WO2025137689A1

WO2025137689A1 - Handheld electrical vehicle tester

Info

Publication number: WO2025137689A1
Application number: PCT/US2024/061690
Authority: WO
Inventors: Paul Kral; Reno Gaertner; Theodore J. Brillhart
Original assignee: Fluke Corp
Current assignee: Fluke Corp
Priority date: 2023-12-22
Filing date: 2024-12-23
Publication date: 2025-06-26
Anticipated expiration: 2026-06-22

Abstract

The present disclosure describes techniques for performing a test on an electric vehicle. A portable device configured to perform a first test can include a handle, a battery, an electric vehicle connector, a user interface, and a testing system. The electric vehicle connector connects to a charging inlet of the electric vehicle. The user interface can receive a selection of the first test from a plurality of available tests. The testing system can transmit a testing signal associated with the first test to the charging inlet. Additionally, the testing system can receive electrical signals associated with the first test. Moreover, the testing system can calculate a measurement based on the received electrical signals. Furthermore, the testing system can evaluate the measurement with the test parameter to determine a test outcome for the first test. Subsequently, the user interface can display a result based on the test outcome.

Description

HANDHELD ELECTRICAL VEHICLE TESTER

FIELD

[0001] The present disclosure relates generally to a handheld electrical tester of an electric vehicle. More particularly, the present disclosure relates to systems and methods for performing a wide range of electrical measurements and tests on electrical vehicles using a handheld and portable measurement device.

BACKGROUND

[0002] A multifunction tester is designed to simplify the process of assessing the safety, performance, and compliance of electrical circuits and equipment. The multifunction tester combines multiple testing functions into a single device to enable a convenient and efficient way for users to diagnose and certify electrical systems. The multifunction tester can be an essential tool for electrical safety inspections. The multifunction tester can help a user ensure that electrical systems are safe and operating correctly.

[0003] There is a need for innovative and precise testing methods of electric vehicles (EVs). When it comes to EV testing, addressing technical challenges include accuracy and precision of the test results, enhanced safety in testing process, speed and efficiency of testing, reliability of the test results, test automation, testing complex circuits, non-destructive testing, and interpretation of test data.

SUMMARY

[0004] Aspects and advantages of embodiments of the present disclosure will be set forth in part in the following description, or can be learned from the description, or can be learned through practice of the embodiments.

[0005] One example aspect of the present disclosure is directed to a portable system configured to perform a first test on an electric vehicle. The portable system can include a battery configured to power the portable system. Additionally, the portable system can include an electric vehicle connector configured to physically connect a main unit to a charging inlet of the electric vehicle. The main unit, having one or more processors that is powered by the battery, can be configured to receive a selection of the first test from a plurality of available tests that is selectable by a user, the first test having a test parameter. Moreover, the main unit, in response to the selection of the first test, can transmit a testing signal associated with the first test to the charging inlet of the electric vehicle. Furthermore, the main unit can receive from the electric vehicle using the electric vehicle connector, electrical signals associated with the first test. Subsequently, the main unit can calculate a measurement based on the received electrical signals and evaluate the measurement with the test parameter to determine a test outcome for the first test. The portable system can further include a user interface configured to display a result based on the test outcome. [0006] In some instances, the portable system can include a testing probe configured to connect to a testing point of the electric vehicle. The testing probe is connected to the main unit using a wired connection. In another embodiment, the testing probe can be connected to the main unit using a wireless connection. Additionally, the testing probe can include a user interface configured to receive the selection of the first test from the plurality of available tests that is selectable by a user.

[0007] In some instances, the main unit can include a user interface configured to receive the selection of the first test from the plurality of available tests that is selectable by a user.

[0008] In some instances, the portable system can include a software layer configured to perform a handshake operation with the electric vehicle. The handshake operation can provide authorization for the portable device to perform the first test on the electric vehicle.

[0009] In some instances, the test outcome can be either a passing outcome or failing outcome based on whether the measurement exceeds the test parameter.

[0010] In some instances, the testing signal can be transmitted after the electric vehicle connector is electrically coupled to the charging inlet of the electric vehicle.

[0011] In some instances, the user interface can be further configured to display the plurality of available tests to be performed on the electric vehicle. The plurality of available tests can include the first test. Additionally, the user interface can receive a user input selecting the first test from the plurality of available tests.

[0012] In some instances, the plurality of available tests can be derived from operational requirements.

[0013] In some instances, the testing signal can be preconfigured to test the test parameter of the first test. [0014] Tn some instances, the test parameter can be determined based on a location associated with the portable device.

[0015] In some instances, the test parameter can be a first value for a first region, and the test parameter can be a second value for a second region. The first value being different than the second value.

[0016] In some embodiments, the portable device is powered by a rechargeable battery. In other embodiments, the portable device electrically couples to a 120-volt outlet, 220-volt outlet, or 480-volt outlet. In some instances, the first test can be associated with a 480-volt technology.

[0017] In some instances, the result is stored in a non-volatile computer-readable memory.

[0018] In some instances, the portable system can transmit, using a wireless connection, the result to a third-party entity.

[0019] In some instances, the testing system can determine vehicle information based on the received electrical signals, the vehicle information includes a vehicle type, vehicle manufacturer, or vehicle model. Additionally, the testing system can update the test parameter based on the vehicle information.

[0020] In some instances, the first test is an earth bond (RPE) test, an insulation (RISO) test, a substitute leakage current (ISL) test, a touch current (ITC) test, a leakage current (IPE) test, a residual-current device (RCD) performance test, a charge cable integrity test, or a protective extra low voltage (PELV) test.

[0021] In some instances, the electric vehicle connector is a type 1 connector, a type 2 connector, or a GB/T connector.

[0022] In some instances, the testing system can transmit a request to the electric vehicle, wherein the request causes the electric vehicle to perform an action. For example, the action can be for the electric vehicle to go into an electrical state associated with charging of a rechargeable battery in the electric vehicle. In another example, the action can be for the electric vehicle to close or open an electric circuit in the electric vehicle.

[0023] In some instances, the portable system can include a handle configured to enable the portable device to be handheld.

[0024] Another example aspect of the present disclosure is directed to a portable device configured to perform a first test on an electric vehicle. The portable device can include a handle, a battery, an electric vehicle connector, a user interface, and a testing system. The handle can be configured to enable the portable device to be handheld. The battery can be configured to power the portable device. The electric vehicle connector can be configured to physically connect to a charging inlet of the electric vehicle. The user interface can be configured to receive a selection of the first test from a plurality of available tests, the first test having a test parameter. The testing system, having one or more processors that are powered by the battery, can be configured to transmit a testing signal associated with the first test to the charging inlet of the electric vehicle in response to the selection of the first test. Additionally, the testing system can receive from the electric vehicle using the electric vehicle connector, electrical signals associated with the first test. Moreover, the testing system can calculate a measurement based on the received electrical signals. Furthermore, the testing system can evaluate the measurement with the test parameter to determine a test outcome for the first test. Subsequently, the user interface can be configured to display a result based on the test outcome.

[0025] In some instances, the portable device can further include a software layer configured to perform a handshake operation with the electric vehicle. The handshake operation can provide authorization for the portable device to perform the first test on the electric vehicle.

[0026] In some instances, the test outcome can either be a passing outcome or failing outcome based on whether the measurement exceeds the test parameter.

[0027] In some instances, the testing signal can be transmitted after the electric vehicle connector is electrically coupled to the charging inlet of the electric vehicle.

[0028] In some instances, the user interface is further configured to display the plurality of available tests to be performed on the electric vehicle. The plurality of available tests can include the first test. Additionally, the user interface can receive a user input selecting the first test from the plurality of available tests.

[0029] In some instances, the plurality of available tests is derived from operational requirements.

[0030] In some instances, the testing signal can be preconfigured to test the test parameter of the first test.

[0031 ] In some instances, the test parameter is determined based on a location associated with the portable device. [0032] Tn some instances, the test parameter can be a first value for a first region, and the test parameter can be a second value for a second region. The first value can be different than the second value.

[0033] In some instances, the portable device is powered by a rechargeable battery.

[0034] In some instances, the portable device electrically couples to a 120-volt outlet, 220- volt outlet, or 480-volt outlet.

[0035] In some instances, the first test can be associated with a 480-volt technology (e.g., fast charging technology).

[0036] In some instances, the portable device can include a non-volatile computer-readable memory, and the result can be stored in the non-volatile computer-readable memory.

[0037] In some instances, the testing system can transmit, using a wireless connection (e.g., Wi-Fi, cellular), the result to a third-party entity.

[0038] In some instances, the testing system can determine vehicle information based on the received electrical signals. For example, the vehicle information can include a vehicle type, vehicle manufacturer, and/or vehicle model. Additionally, the testing system can update the test parameter based on the vehicle information.

[0039] In some instances, the first test can be an earth bond (RPE) test, an insulation (RISO) test, a substitute leakage current (ISL) test, a touch current (ITC) test, a leakage current (IPE) test, a residual-current device (RCD) performance test, a charge cable integrity test, or a protective extra low voltage (PELV) test.

[0040] In some instances, the plurality of available tests can include an earth bond (RPE) test, an insulation (RISO) test, a substitute leakage current (ISL) test, a touch current (ITC) test, a leakage current (IPE) test, a residual-current device (RCD) performance test, a charge cable integrity test, and/or a protective extra low voltage (PELV) test.

[0041] In some instances, the electric vehicle connector is a type 1 connector, a type 2 connector, or a GB/T connector.

[0042] In some instances, the testing system transmit a request to the electric vehicle. The request can cause the electric vehicle to perform an action. For example, the action can be for the electric vehicle to go into an electrical state associated with charging of a rechargeable battery in the electric vehicle. In another example, the action can be for the electric vehicle to close or open an electric circuit in the electric vehicle. [0043] Another example aspect of the present disclosure is directed to a method for performing a first test on an electric vehicle. The method can include receiving a selection of the first test from a plurality of available tests. The first test can have a test parameter. Additionally, the method can include transmitting, using an electric vehicle connector, a testing signal associated with the first test to the charging inlet of the electric vehicle. Moreover, the method can include receiving from the electric vehicle using the electric vehicle connector, electrical signals associated with the first test. Furthermore, the method can include calculating, using one or more processors, a measurement based on the received electrical signals. Subsequently, the method can include evaluating the measurement with the test parameter to determine a test outcome for the first test, and displaying, using a user interface, a result based on the test outcome.

[0044] Another example aspect of the present disclosure is directed to a one or more non- transitory, computer readable media storing instructions that are executable by one or more processors to cause a computing system to perform operations. The operations can include receiving a selection of the first test from a plurality of available tests, the first test having a test parameter. Additionally, the operations can include transmitting, using an electric vehicle connector, a testing signal associated with the first test to the charging inlet of the electric vehicle. Moreover, the operations can include receiving from the electric vehicle using the electric vehicle connector, electrical signals associated with the first test. Furthermore, the method can include calculating a measurement based on the received electrical signals. Subsequently, the method can include evaluating the measurement with the test parameter to determine a test outcome for the first test, and displaying, using a user interface, a result based on the test outcome.

[0045] Other aspects of the present disclosure are directed to various systems, apparatuses, non-transitory computer-readable media, user interfaces, and electronic devices.

[0046] These and other features, aspects, and advantages of various embodiments of the present disclosure will become better understood with reference to the following description and appended claims. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate example embodiments of the present disclosure and, together with the description, serve to explain the related principles.

BRIEF DESCRIPTION OF THE DRAWINGS [0047] Detailed discussion of embodiments directed to one of ordinary skill in the art is set forth in the specification, which makes reference to the appended figures, in which:

[0048] Figure 1 depicts a side view perspective diagram of an example of a portable, handheld tester device according to example embodiments of the present disclosure.

[0049] Figure 2 depicts a block diagram of an example device according to example embodiments of the present disclosure.

[0050] Figure 3 depicts a block diagram of an example device according to example embodiments of the present disclosure.

[0051] Figure 4 depicts a top view perspective diagram of an example device according to example embodiments of the present disclosure.

[0052] Figure 5 depicts a top view perspective diagram of an example testing device according to example embodiments of the present disclosure.

[0053] Figure 6 depicts a flowchart diagram of an example method for performing a test on an electric vehicle using a portable device and a testing probe according to example embodiments of the present disclosure.

[0054] Figure 7 depicts a flowchart diagram of an example method for initiating a test on an electric vehicle using a portable device according to example embodiments of the present disclosure.

[0055] Figure 8 depicts a flowchart diagram of an example method for performing a test on an electric vehicle using a portable device according to example embodiments of the present disclosure.

DETAILED DESCRIPTION

[0056] Example aspects of the present disclosure are directed to techniques for automated testing of the electric vehicle charging interface to validate performance of specific safety related characteristics. For example, the testing can include, but is not limited to, earth bond (RPE); insulation testing (Riso); substitute leakage current testing (ISL); touch current testing (ITC); load/leakage current testing (IPE); RCD performance testing; charge cable integrity testing; PELV (Protective Extra Low Voltage) testing; and any additional tests specific to legal vehicle registration requirements as defined by a regulatory agency. [0057] There are current and proposed regulations for electric vehicles (EVs) in many countries around the world. These regulations cover various aspects of EVs, including electrical safety, fire safety, manufacturing and quality control, compatibility standards to ensure different EVs can use the same chargers, and how EVs can connect to the grid. Additionally, different countries can have their own safety standards and testing procedures.

[0058] An example of a conventional EV testing system is a bespoken rack-mounted tool that a vehicle manufacturer can utilize in a factory production environment. The conventional tool is specialized for a specific test of a new vehicle. The conventional tool can include off-the-shelf elements of other test equipment and software systems that skilled technicians can utilize to perform a specific test without needing an intelligent user interface that summarizes the outcome of the test.

[0059] With the mass adoption of EVs, there is now a new application space for electrical safety testing of the vehicle charging interface. As more safety regulations for EVs get enacted, there is a need for a portable device automatically perform testing needed for validating EVs that are standard and/or regulatory compliant.

[0060] There is a need for innovative and precise testing methods of electric vehicles. When it comes to electrical vehicles (EVs), addressing technical challenges in testing can include accuracy and precision of the test results, enhanced safety in testing process, speed and efficiency of testing, reliability of the test results, test automation, testing complex circuits, non-destructive testing, and interpretation of test data.

[0061] According to some embodiments, the testing device described herein is a self- contained and portable system (e.g., handheld testing device and ITB) that can perform a plurality of tests based on a user request via a graphical user interface. For example, the system can inject current into the EV for testing purposes. The testing device can be automated and intelligent to enable non-trained users to utilize the device to perform tests by simply connecting the device to the EV charging interface and the ITB to another region of the EV. The ITB can connect to the testing device by means of two wires providing power to the ITB and connecting analog signals with the testing device. Digital communications between the ITB and testing device can be modulated using the same wires without interfering with the analog signals. Alternatively, the ITB can either have a complete or partial part of the electronics built in. This can include the analog/digital signal chain, a microcontroller, a display, and other components. [0062] The present disclosure generally describes a system having a portable (e.g., handheld) measuring device and an intelligent test probe (IPB) that can perform a variety of electrical safety testing of the vehicle charging interface. Additionally, the system can perform testing to validate compliance of EVs with regards to standards and/or regulations. The testing performed can be automatically adjusted by the system based on location.

[0063] The techniques described herein describe the innovative aspects of solving the technical problems associated with an electric vehicle. The techniques ensure that the testing methods and system provide accurate and precise results in a user-friendly interface. Additionally, the testing system can enhance safety in testing processes by using testing methods and components that meet safety standards and regulatory requirements. Moreover, the techniques improve the speed and efficiency of testing electric vehicles by reducing testing time and resource requirements (e.g., portable measuring device). For example, in conventional EV testing, a bespoken rack-mounted tool can be required to test a specific EV model, while our claimed invention utilized a universal portable device that can test a variety of EV brands and models. Furthermore, the technique can improve reliability by providing consistency and reproducibility of test results. The portable measuring device can also include software that automated testing by integrating the testing with other processes, such as quality control or regulatory compliances.

[0064] Given that an EV is a very complex systems, the techniques described herein enable the automatic testing of the EV’s intricate circuits and systems without complicated user input. Additionally, the device is able to perform non-destructive testing, by testing the EV without causing damage to the EV. Furthermore, the device can analyze and interpret the testing data and provide results on a graphical user interface.

[0065] For example, a user can, using a graphical user interface, request a test from a plurality of tests to be performed. In response to the user request, the device can automatically perform the test and present the results on the graphical user interface. The results can include a passing (e.g., green light) or non-passing (e.g., red light) indication. Moreover, the results can also include a comprehensive report that can be uploaded to the internet via a Wi-Fi connection.

[0066] In some embodiments, the system can perform vehicle-to-grid (V2G) related testing. For example, the system can include a built-in load. In another example, the system can include a component to connect to a mobile load, such as a connector to connect to an electric plug of a house. [0067] In order to perform the different tests, the testing device includes a software layer to communicate (e.g., perform handshaking operations) with the EV. In contrast to testing passive devices (e.g., monitor), which do not require communicating with the passive device, the EV testing device needs to communicate with the EV in order to perform the different tests. For example, the system can emulate a charging station to communicate and test the EV. The communication can include handshake operations to obtain permission to perform some of the testing. Additionally, for some of the testing, the EV may have to perform an action which can be communicated from the testing device to the EV using the software layer. The action performed by the EV can be to go into an electrical state. For example, the EV includes contactors for opening and closing circuits as the EV prepares for charging its battery. In some instances, the testing device can communicate with the EV to instruct the EV to go into an electrical state associated with charging its battery.

[0068] Additionally, the testing device can be manufactured with a specific vehicle charging inlet connector. Given that there are different types of EV charging connectors, the device can include an EV inlet connection that can connect to the different types of connectors. In a first embodiment, the device can include a Type 1 connector, such as a JI 772 connector Type 1 or CCS connector Type 1 (CCS1). The J1772 connector is an alternating current (AC) charging standard for vehicles in North American and Japan. The CCS1 connector is a direct current (DC) charging standard for vehicles in North American. In another embodiment, the device can include a Type 2 connector, such as a Mennekes connector Type 2 or a CCS connector Type 2 (CCS2). The Mennekes connector is an AC charging standard for vehicles in Europe. The CCS2 is a DC charging standard for vehicles in Europe. In yet another embodiment, the device can include a GB/T connector, which is an AC/DC charging standard for vehicles in China.

[0069] The present disclosure generally describes a portable (e.g., handheld) measuring device that can perform a variety of electrical safety testing of a vehicle charging interface of an electrical vehicle (EV). For example, the device can perform testing to validate compliance of EVs with regards to standards and/or regulations. The testing performed can be automatically by the device based on derived information. The derived information can include vehicle information and location information. For example, the device can have a first test protocol for an EV in a first location (e.g., France), and second test protocol for the EV in a second location (e.g., United States). The test protocol can be a plurality of tests that are determined by the device based on the standards and regulatory compliance requirements of a specific location (e.g., region, country).

[0070] The techniques described herein solve the technical problems associated with testing an electric vehicle. The techniques ensure that the testing methods and equipment provide accurate and precise results. Additionally, the testing system can enhance safety in testing processes by using testing methods and components that meet safety standards and regulatory requirements. Moreover, the techniques improve the speed and efficiency of testing electric vehicles by reducing testing time and resource requirements associated with a portable device. Furthermore, the technique can improve reliability by providing consistency and reproducibility of test results that can be wireless transmitted to a third-party. The portable measuring device can also include software that automated testing by integrating the testing with other processes, such as quality control or regulatory compliances.

[0071] Given that an EV is a complex system, some example techniques described herein enable the automatic testing of the EV’s intricate circuits and systems without requiring complicated user input. Additionally, the device, using a communication process with the EV, can perform non-destructive testing (e.g., by performing safety checks prior to the testing) which enables the testing of the EV without causing damage to the EV. Furthermore, the device can analyze and interpret the testing data and provide results on a graphical user interface.

[0072] As background, there are current and proposed regulations for electric vehicles (EVs) in many countries around the world. These regulations cover various aspects of EVs, including electrical safety, fire safety, manufacturing and quality control, compatibility standards to ensure different EVs can use the same chargers, and how EVs can connect to the grid. Additionally, different countries can have their own safety standards and testing procedures.

[0073] In conventional systems, generalized electrical appliance safety testing and specific vehicle safety testing have been practiced for many years. An example of existing general-purpose apparatus designed to perform power-line safety testing is the Fluke 6500-2 Portable Appliance Tester (PAT). However, with the mass adoption of EVs, there is now an unresolved need for electrical safety testing of the vehicle charging interface. As more safety regulations for EVs get enacted, there is a need for a portable device automatically perform testing needed for validating EVs that are standard and/or regulatory compliant. [0074] Example aspects of the present disclosure are directed to techniques for automated testing of the electric vehicle charging interface to validate performance of specific safety related characteristics. For example, the testing can include, but is not limited to, earth bond (RPE); insulation testing (Riso); substitute leakage current testing (ISL); touch current testing (ITC); load/leakage current testing (IPE); RCD performance testing; charge cable integrity testing; PELV (Protective Extra Low Voltage) testing; and any additional tests specific to legal vehicle registration requirements as defined by a regulatory agency.

[0075] An example of a conventional EV testing system is a bespoke rack-mounted tool that a vehicle manufacturer can utilize in a factory production environment. The conventional tool is specialized for a specific test of a new vehicle. The conventional tool can include off-the-shelf elements of other test equipment and software systems that skilled technicians can utilize to perform a specific test without needing an intelligent user interface that summarizes the outcome of the test.

[0076] In contrast, example testing devices described herein can be a self-contained and portable device that can perform a plurality of tests, by injecting current into the device being tested, based on a user request via a graphical user interface. The testing device can be automated and intelligent to enable non-trained users to utilize the device to perform tests by simply connecting the device to the EV charging interface. For example, a user can, using a graphical user interface, request a test from a plurality of tests to be performed. In response to the user request, the device can automatically perform the test and present the results on the graphical user interface. The results can include a passing (e.g., green light) or non-passing (e.g., red light) indication. Moreover, the results can also include a comprehensive report that can be uploaded to the internet via a Wi-Fi connection.

[0077] In order to perform the different tests, the testing device can include a software layer to communicate (e.g., perform handshaking operations) with the EV. In contrast to testing passive devices (e.g., monitor), which do not require communicating with the passive device, the EV testing device can communicate with the EV in order to perform the different tests. The communication can include handshake operations to obtain permission to perform some of the testing. Additionally, for some of the testing, the EV may have to perform an action which can be communicated from the testing device to the EV using the software layer. The action performed by the EV can be to enter into an electrical state. For example, the EV can include contactors for opening and closing circuits as the EV prepares for charging its battery. In some instances, the testing device can communicate with the EV to instruct the EV to go into an electrical state associated with charging its battery.

[0078] In some instances, the handshake process includes a physical connection to the EV using an EV connector, establishment of communication, safety checks, parameter negotiations, start of testing, ongoing communication, and termination of testing. After the physical connection, both the portable device and the EV can start communicating to identify each other. They exchange information such as the type of vehicle, type of device, user account information, authorization information, state of vehicle, state of the vehicle’s battery, and other relevant information. Additionally, prior to testing, the portable device can perform safety checks (e.g., prevent short circuit, ensure correct grounding is present, no fault conditions exist) to protect the EV during the testing. During the testing, test parameters can be exchanged between the portable device and the EV. Moreover, while the vehicle is being tested, the portable device continues to communicate with the EV, providing updates on the testing process, adjusting requests if needed, and monitoring for any faults. When the testing is completed, the portable device can terminate the communication to indicate the end of the testing session.

[0079] To perform the handshake, the software layer can include software and firmware that are integrated into a testing system of the portable device. The software layer can be responsible for various functions and features of the portable device, including the handshake with the EV. Moreover, the software layer can authenticate the portable with the EV. If the testing requires user authentication, the software layer can manage this user authentication.

[0080] According to some embodiments, the software layer can perform a handshake with the EV to prepare the EV for the testing session. For example, after the portable device has been physically connected to the EV, the software layer can send a continuous "pilot signal" (typically a low voltage square wave) to the vehicle. The pilot signal can indicate the device’s readiness and capability. Additionally, the pilot signal can provide a channel for the EV and the portable device to communicate and negotiate testing parameters. Subsequently, the EV can acknowledge the connection by modifying the pilot signal in a certain way (e.g., by changing the duty cycle of the signal). The portable device can receive the modified pilot signal, which informs the device that the EV is present and ready to be tested. Based on the pilot signal and communication protocols, the portable device and the EV can exchange information about the testing capabilities and requirements. Once an agreement is reached between the portable device and the EV, the portable device can start the testing procedures.

[0081] Additionally, the testing device can be manufactured with a specific vehicle charging inlet connector. Given that there are different types of EV charging connectors, the device can include an EV inlet connection that can connect to the different types of connectors. In a first embodiment, the device can include a Type 1 connector, such as a JI 772 connector Type 1 or CCS connector Type 1 (CCS1). The J1772 connector is an alternating current (AC) charging standard for vehicles in North American and Japan. The CCS1 connector is a direct current (DC) charging standard for vehicles in North American. In another embodiment, the device can include a Type 2 connector, such as a Mennekes connector Type 2 or a CCS connector Type 2 (CCS2). The Mennekes connector is an AC charging standard for vehicles in Europe. The CCS2 is a DC charging standard for vehicles in Europe. In yet another embodiment, the device can include a GB/T connector, which is an AC/DC charging standard for vehicles in China.

[0082] With reference now to the Figures, example embodiments of the present disclosure will be discussed in further detail.

[0083] Reference now will be made in detail to embodiments of the invention, one or more examples of which are illustrated in the drawings. Each example is provided by way of explanation of the invention, not limitation of the invention. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. For instance, features illustrated or described as part of one embodiment can be used with another embodiment to yield a still further embodiment. Thus, it is intended that the present invention covers such modifications and variations as come within the scope of the appended claims and their equivalents.

[0084] Figure 1 depicts a side view perspective diagram 100 of an example of a portable, hand-held tester device according to example embodiments of the present disclosure. Figure 1 illustrates an exemplary embodiment of the device 110 (e.g., portable device) in a portable, handheld form factor. The particular number, location, and arrangement of the components are provided as an example only. Other numbers, locations, and/or arrangements of the components are possible.

[0085] The device 110 can include a housing 120 configured to encase electronic components and a user interface 130. The housing 120 can encase and protect the various internal components, such as the testing system, of the device. The housing 120 can be ergonomically designed to be easily held and operated with one hand, enhancing the device's usability.

[0086] The user interface 130 can include a display screen for presenting test results and receiving user prompts. The display screen can serve as the primary user interface for the device, allowing operators to interact with the device 110, such as navigating through the various functionalities of the device and causing the device to perform various actions. For example, an operator of the device 110 can input test parameters and receive test results using the user interface 130. The user interface 130 can receive test parameters from the operator. In some instances, the user interface 130 can include one or more input buttons, control knobs, and/or a touchscreen display. In some implementations, the user interface 130 may be touch-sensitive.

[0087] The device 110 can include a microcontroller (e.g., a testing system) for controlling testing operations. The microcontroller can be pre-programmed and/or be modified via the connecting unit 140. The connecting unit 140 can be an input/output connecting unit that is configured to connect to the electrical mains, serial data, partial discharge, EV chassis connection, and so on.

[0088] Additionally, the device 110 can include a handle 150. The handle 150 can be connected to a lid 155. The handle 150 may feature a grip for the user's comfort and convenience. The grip is designed to provide a secure hold on the device, reducing the risk of accidental drops and enhancing the user's control over the device. The grip may be textured or covered with a nonslip material to further improve the user's grip. In one embodiment, the handle 150 can include a battery compartment for a battery to provide power to the device 110. The battery can be rechargeable. Additionally, the battery can be removed or installed by opening the lid 155. In another embodiment, the handle 150 can have a connector (e.g., plug) to connect to a power source (e g., wall outlet) to power the device 110.

[0089] Moreover, the device 110 can include an EV connector 160. The EV connector 160 can provide a data interface for the transmission of electrical signals to and from the EV. The EV connector 160 can be electrically coupled to a testing system (not pictured) configured to perform a plurality of available tests on the EV connected to the device 110. The testing system can be encased by the housing 120. The plurality of available tests can include, but are not limited to, continuity testing, insulation resistance testing, leakage current testing, and earth continuity testing, an earth bond (RPE) test, an insulation (RISO) test, a substitute leakage current (ISL) test, a touch current (ITC) test, a leakage current (IPE) test, a residual-current device (RCD) performance test, a charge cable integrity test, and/or a protective extra low voltage (PELV) test. [0090] In some instances, the device 110 can include a memory module for storing test results and test data. Additionally, the device 110 can be configured to communicate with external devices or networks for data transfer and remote monitoring. For example, the test results and test data can be transferred to another device using the connecting unit 140 or wirelessly using a wireless connection (e.g., Wi-Fi, cellular). In some instances, the device 110 can include electrical components (e.g., 5G chip) to communicate wirelessly with other devices.

[0091] In some implementations, the device may also include one or more buttons or controls (not pictured) on the side of the housing 120. These controls can provide quick access to commonly used functions, such as switching between different modes, or adjusting the device's settings. These controls can be designed to be easily operable even when the user is wearing gloves or in low-light conditions, making the device 110 suitable for use in a wide range of environments.

[0092] In one example, as depicted in figure 1, the length of the device 110 can be less than 300 millimeters (mm) and the height of the device 110 can be less than 150 mm.

[0093] Figure 2 depicts a block diagram of an example device according to example embodiments of the present disclosure. The device 110 can include a user interface 130, a testing system 220, processor(s) 230, and memory device(s) 232.

[0094] According to some embodiments, the device 110 can include the user interface 130. The user interface 130 can receive user input 210 from an operator of the device 110. A display screen can be integrated into the user interface 130 to display test results 250 and prompt the operator for user input 210. The display may be a touch screen. It might show menus and options, key settings like the selected frequency, signal strength, battery status, or error messages. User interface elements, such as buttons or touch- sensitive controls, can help users navigate through settings and adjust parameters conveniently.

[0095] The user interface 130 can enhance the usability and functionality of the device, for example, the user interface could enable users to configure settings, capture images, and access various features of the device 110. In some implementations, the user interface 130 can provide an interface for operators to interact with the EV test data 240 and/or testing results 250. This could include functions such as selecting EV testing data, performing data analysis, setting thresholds, setting parameters, and/or exporting the test results 250 for further analysis. [0096] Additionally, the device 110 can include a testing system 220. The testing system 220 can include a software layer to communicate with the EV. For example, the software layer can perform a handshake with the EV to initiate the testing process. After the handshake process, the EV can grant access and/or authorization to the device 110 to perform the testing. In some instances, the device 110 may require the EV to perform an action, which can occur have the device 110 has been authorized by the EV. The testing system 220 is configured to generate output (e.g., test results 250) based on EV testing data 240. In some embodiments, the testing system 220 can include a graphical processing unit (GPU). The GPU can be responsible for processing the EV testing data 240 and converting the testing data into a graphical form. This may involve colorcoding different test results, enhancing contrast for improved visibility, or applying other graphical effects to improve the clarity and utility of the testing results. In some embodiments, the testing system 220 may also include machine-learning techniques to enhance the quality and usefulness of the testing results. For instance, it may include historical data of the EV, performance data of the EV, and other EV-related data to determine and validate test results more accurately.

[0097] The device 110 can also include processors(s) 230. The processor(s) 230 can include any suitable processing device, such as a microprocessor, microcontroller, integrated circuit, logic device, or other suitable processing device. The processor(s) 230 can execute firmware or software instructions. The device 110 can also include memory device(s) (132). The memory device(s) (132) can include one or more computer-readable media, including, but not limited to, non- transitoiy computer-readable media, RAM, ROM, hard drives, flash drives, or other memory devices. The memory device(s) (132) can store information accessible by the processor(s) 230, including computer-readable instructions that can be executed by the processor(s) 230. The instructions can be any set of instructions that when executed by the processor(s) 230, cause the processor(s) 230 to perform operations (e g., operations attributed herein to testing system 220). The instructions can be software written in any suitable programming language or can be implemented in hardware. In some embodiments, the instructions can be executed by the processor(s) 230 to cause the processor(s) 230 to perform operations, such as the operations for communication, data replication, and data sharing.

[0098] Figure 3 depicts a block diagram of an example device according to example embodiments of the present disclosure. The device 110 can include an EV connector 160, testing system 220, a user interface 130, internal energy source 320 (e g., battery), and a connecting unit 140. In some instances, the EV testing data 240 can be received via the EV connector 160. The EV connector 160 can plug into the EV.

[0099] Additionally, the EV testing data 240 can be processed by the testing system 220 of the device 110 to generate testing results 250. The testing system 220 can include a calculation unit 312, a data acquisition unit 314, and data storage 316. The calculations unit 312 can perform calculations on the testing data 240 and test parameters. The data acquisition unit 314 can obtain data from the electric vehicle and/or third-party data (e.g., standards or regulatory compliance requirements). For example, the third-party data can be downloaded from the internet.

[0100] Moreover, the test results 250 can be presented on the user interface 130. Additionally, the user interface can receive user input 210 from the operator of the device.

[0101] As previously mentioned, the device 110 can include an internal energy source 320, such as a rechargeable battery. In some instances, the battery can be enclosed by the handle 150, as illustrated in FIG. 1.

[0102] Furthermore, the device 110 can output the test results 250 using a connecting unit 140. The connecting unit 140 can receive input from another device. The input can be power and/or data. The connecting unit can also transmit the output (e.g., test results 250) either via a wired connection or wirelessly.

[0103] Figure 4 depicts a top view perspective diagram 400 of an example device 110 according to example embodiments of the present disclosure. The particular number, location, and arrangement of the components are provided as an example only. Other numbers, locations, and/or arrangements of the components are possible.

[0104] The device 110 can include a user interface 130 that is positioned on top of the device. The user interface 130 can include a display screen for presenting test results 250 and receiving user prompts. In some instances, the user interface 130 can include one or more input buttons 430, control knobs, and/or a touchscreen display.

[0105] Additionally, the device 110 can include a first handle 410 that is positioned on a first side of the device 110, and a second handle 420 that is positioned on a second side of the device 110. The first handle 410 and the second handle 420 can be ergonomically designed to be easily held and operated with one hand, which can enhance the device's usability.

[0106] Moreover, the device 110 can include an EV connector 160 that is positioned on a third side of the device 110. The EV connector 160 can provide an interface for the transmission of electrical signals to and from the EV. The EV connector 160 can be electrically coupled to the testing system 220 configured to perform one or more electrical safety tests on the EV connected to the device 110.

[0107] Figure 5 depicts a top view perspective diagram of an example of a test probe 500 according to example embodiments of the present disclosure. Figure 5 illustrates an exemplary embodiment of the test probe 500 (e.g., portable device) in a portable, handheld form factor. The particular number, location, and arrangement of the components are provided as an example only. Other numbers, locations, and/or arrangements of the components are possible.

[0108] The test probe 500 can include a test tip 510. The test tip 510 can have the ability to make reliable contact with the EV. Additionally, the test tip 510 can make contact on corroded metal parts, screws, car chassis parts, and housing of battery management system (BMS). The test tip can be replaceable when the tip is worn. Moreover, the test tip 510 can be compatible with probe accessories, such as dolphin clips.

[0109] The test probe 500 can include a light button 520 to tun on a light (e.g., white LED). The light can provide the ability to illuminate dark test locations. The test probe can also include a digital screen 530 to provide the ability to associate a measurement to a certain test point. The digital screen 530 can present the testing information (e.g., test identifier, test value, descriptive text). The test probe 500 can include a test button 540 to provide the ability to trigger a new test. For example, the workflow can be to establish contact as best as possible and then trigger a new measurement. The test probe 500 can determine a test result 550 that is displayed on the digital screen 530. The test result 550 can provide the ability for a user to verify the results at the point of taking the measurement. For example, the test result 550 can be presented as either pass or fail. The test result 550 can also have a color based on the result (e.g., green for passing the test, red for failing the test). Additionally, the test result 550 can include a measurement value and a maximum/minimum limit value (e.g., to highlight how far the measurement is from the limit).

[0110] Additionally, the test probe 500 can include a save button 560 to provide the ability to store the test result 550. In some instances, the test may require more than one attempt to achieve the best possible measurement result (e.g., if the test point is corroded). Thus, to solve the problem associated with saving incorrect measurements, the value is saved by pressing the save button 560. Furthermore, the test probe 500 can include navigation button(s) 570. The navigation button(s) 570 enables a user to navigate to a previous test point or to a next test point. For example, the navigation button(s) 570 can be a left arrow key and a right arrow key.

[0111] Figure 6 depicts a flowchart diagram of an example method 600 for initiating a test on an electric vehicle using a portable device according to example embodiments of the present disclosure.

[0112] In some instances, a portable device (e.g., device 110) can be configured to perform a first test on an electric vehicle. The device 110 can include an EV connector (e.g., EV connector 160) that is configured to physically connect to a charging inlet of the electric vehicle. Additionally, the device 110 can include a handle configured to enable the portable device to be handheld and/or a battery configured to power the portable device. Furthermore, the device 110 can include a user interface configured to receive a selection of the first test from a plurality of available tests. Moreover, the device 110 can include a testing system, having one or more processors that is powered by a battery. The device 110 can include one or more computer-readable media (e.g., memory device(s) 232) that collectively store instructions that, when executed by the one or more processors, cause the portable device to perform operations described in method 500. [0113] According to some embodiments, the device 110 can be a handheld portable device having an electric vehicle connector 160 configured to electrically coupled to the charging inlet of the electric vehicle.

[0114] At 610, the device 110 can receive a selection of the first test from a plurality of available tests that is selectable by a user. The first test can have a test parameter. In some instances, the plurality of available tests can be derived from operational requirements.

[0115] In some instances, the device 110 can include a main unit. The main unit can include a user interface configured to receive the selection of the first test from the plurality of available tests that is selectable by a user.

[0116] In some instances, the user interface can display the plurality of available tests to be performed on the electric vehicle. The plurality of available tests can include the first test. Additionally, the user interface can receive a user input selecting the first test from the plurality of available tests.

[0117] At 620, the device 110 can transmit a testing signal associated with the first test to the charging inlet of the electric vehicle. For example, the device 110 can transmit the testing signal in response to the selection of the first test. In some instances, the testing signal can be preconfigured to test the test parameter of the first test.

[0118] In some instances, the device 110 can include a software layer. The software layer can be configured to perform a handshake operation with the electric vehicle. The handshake operation can provide authorization for the portable device to perform the first test on the electric vehicle.

[0119] In some instances, the testing signal can be transmitted after the electric vehicle connector is electrically coupled to the charging inlet of the electric vehicle.

[0120] At 630, the device 110 can receive electrical signals associated with the first test. The device 110 can receive the electrical signals from the electric vehicle using the electric vehicle connector.

[0121] At 640, the device 110 can calculate a measurement based on the received electrical signals.

[0122] At 650, the device 110 can evaluate the measurement with the test parameter to determine a test outcome for the first test. For example, the test outcome is either a passing outcome or failing outcome based on whether the measurement exceeds the test parameter.

[0123] In some instances, the test parameter is determined based on a location associated with the portable device. For example, the test parameter is a first value for a first region, and the test parameter is a second value for a second region, and wherein the first value is different than the second value.

[0124] At 660, the device can display a result based on the test outcome. For example, the result can be displayed on a user interface of the device 110.

[0125] According to some embodiments, the device 110 can include a testing probe (e.g., test probe 500 in FIG. 5) that is configured to connect to a testing point of the electric vehicle. In one example, the testing probe can be connected to the main unit using a wired connection. In another example, the testing probe can be connected to the main unit using a wireless connection. Additionally, the testing probe can include a user interface (e.g., digital screen 530 in FIG. 5) that is configured to receive the selection of the first test from the plurality of available tests that is selectable by a user.

[0126] In one embodiment, the portable device is powered by a rechargeable battery. In another embodiment, the portable device electrically couples to a 120-volt outlet, 220-volt outlet, or 480-volt outlet. In some instances, the first test is associated with a 480-volt technology. [0127] Tn some instances, the result can be stored in a non-volatile computer-readable memory. For example, the save button 560 in the test probe 500 can cause the result to be saved in memory of the device 110.

[0128] In some instances, the device 110 can transmit, using a wireless connection, the result to a third-party entity.

[0129] In some instances, the device 110 can determine vehicle information based on the received electrical signals, the vehicle information includes a vehicle type, vehicle manufacturer, or vehicle model. Additionally, the device can update the test parameter based on the vehicle information.

[0130] In some instances, the first test can be an earth bond (RPE) test, an insulation (RISO) test, a substitute leakage current (ISL) test, a touch current (ITC) test, a leakage current (IPE) test, a residual-current device (RCD) performance test, a charge cable integrity test, and/or a protective extra low voltage (PELV) test.

[0131] In some instances, the electric vehicle connector is a type 1 connector, a type 2 connector, or a GB/T connector.

[0132] In some instances, the device 110 can transmit a request to the electric vehicle, wherein the request causes the electric vehicle to perform an action. For example, the action can be for the electric vehicle to go into an electrical state associated with charging of a rechargeable battery in the electric vehicle. In another example the action can be for the electric vehicle to close or open an electric circuit in the electric vehicle.

[0133] In some instances, the device can include a handle configured to enable the portable device to be handheld.

[0134] Figure 7 depicts a flowchart diagram of an example method 700 for initiating a test on an electric vehicle using a portable device according to example embodiments of the present disclosure.

[0135] In some instances, a portable device (e.g., device 110) can be configured to perform a first test on an electric vehicle. The device 110 can include an EV connector (e.g., EV connector 160) that is configured to physically connect to a charging inlet of the electric vehicle. Additionally, the device 110 can include a handle configured to enable the portable device to be handheld and/or a battery configured to power the portable device. Furthermore, the device 110 can include a user interface configured to receive a selection of the first test from a plurality of available tests. Moreover, the device 110 can include a testing system, having one or more processors that is powered by a battery. The device 110 can include one or more computer-readable media (e.g., memory device(s) 232) that collectively store instructions that, when executed by the one or more processors, cause the portable device to perform operations described in method 700. [0136] According to some embodiments, the device 110 can be a handheld portable device having an electric vehicle connector 160 configured to electrically coupled to the charging inlet of the electric vehicle.

[0137] At 710, the device 110 can be connected (e.g., coupled), using the EV connector 160, to the charging inlet of the electric vehicle. The connection at 710 can result in the device receiving electrical signals from the electric vehicle.

[0138] At 720, the device 110 can determine vehicle information based on the connection at 710. For example, the device can receive electrical signals from the vehicle. The electrical signals can include vehicle information. The vehicle information can include a vehicle type, vehicle manufacturer, or vehicle model.

[0139] At 730, the device 110 can display, on the user interface 130, a plurality of available tests to be performed on the electric vehicle. The plurality of available tests can be selected by a user using the user interface. The plurality of available tests can include the first test. In some instances, the plurality of available tests can be based on the vehicle information determined at 720. For example, the plurality of available tests can be configured for a specific vehicle type, vehicle manufacturer, or vehicle model. Additionally, the plurality of available tests can be based on the standards and/or regulatory compliance requirements of the local region (e.g., country, state, county, city) associated with the physical location of the electric vehicle.

[0140] In some instances, the plurality of available tests can be derived from operational requirements. The operational requirements can be based on the make of the electric vehicle, the model of the electric vehicle, the current location of the electric vehicle, the location associated with the sale of the electric vehicle, the location associated with the manufacturing of the electric vehicle. In one example, the operational requirements can be based on standards associated with the location of where the electric vehicle is manufactured. In another example, the operational requirements can be based on the regulatory requirements associated with the location of where the electric vehicle is sold. [0141 ] At 740, the device 110 can receive a user input selecting a first test from the plurality of available tests. The device 110 can receive a selection of the first test from a plurality of available tests that is selectable by a user. In some instances, the device 110 can determine a test parameter for the first test based on the vehicle information determined at 720. For example, the test parameter for the first test can be determined using machine-learning techniques based on the vehicle information and/or standards and regulatory compliance requirements.

[0142] At 750, in response to the selection of the first test at 740, the device 110 can transmit a testing signal associated with the first test to the charging inlet of the electric vehicle. For example, the testing signal can be preconfigured to examine the test parameter of the first test. Different testing signals that are preconfigured can be stored in memory of the device (e.g., memory device(s) 232, data storage 316).

[0143] Figure 8 depicts a flowchart diagram of an example method 800 for performing a test on an electric vehicle using a portable device according to example embodiments of the present disclosure. The portable device (e.g., device 110) can be configured to perform a first test on an electric vehicle. The device 110 can include an EV connector (e.g., EV connector 160) that is configured to physically connect to a charging inlet of the electric vehicle. Additionally, the device 110 can include one or more processors (e.g., processor(s) 230). Moreover, the device 110 can include one or more computer-readable media (e.g., memory device(s) 232) that collectively store instructions that, when executed by the one or more processors, cause the portable device to perform operations described in method 800.

[0144] In some instances, method 800 can be performed after method 700.

[0145] At 810, the device 110 can receive, using the electric vehicle connector 160, electrical signals associated with a first test. The first test can include a test parameter. For example, EV testing data 240 can be derived from the electrical signals received at 810.

[0146] In some instances, the electrical signals are received after the electric vehicle connector 160 is electrically coupled to the charging inlet of the electric vehicle. For example, the electric vehicle connector 160 can be a type 1 connector, a type 2 connector, or a GB/T connector. [0147] In some instances, the first test can be an earth bond (RPE) test, an insulation (RISO) test, a substitute leakage current (ISL) test, a touch current (ITC) test, a leakage current (IPE) test, a residual-current device (RCD) performance test, a charge cable integrity test, or a protective extra low voltage (PELV) test. [0148] Tn some instances, the first test can be associated with a 480-volt technology. The 480- volt charging, in contrast to 120-volt or 220-volt charging, can be utilized for fast charging of electric vehicles. The device 110 includes components specifically designed to perform testing of 480-volt technology.

[0149] In some instances, the test parameter can be determined using machine-learning techniques. For example, the test parameter can be determined based on a location associated with the device. For example, the test parameter can be a first value for a first region (e.g., France), and the test parameter can be a second value for a second region (e.g., United States). The first value can be different than the second value. In another example, the test parameter can be derived from operational requirements. The operational requirements can be based on the make of the electric vehicle, the model of the electric vehicle, the current location of the electric vehicle, the location associated with the sale of the electric vehicle, the location associated with the manufacturing of the electric vehicle. The operational requirements can be based on standards associated with the location of where the electric vehicle is manufactured. The operational requirements can also be based on the regulatory requirements associated with the location of where the electric vehicle is sold.

[0150] At 820, the device 110 can transmit, using an electric vehicle connector, a testing signal associated with the first test to the charging inlet of the electric vehicle. In some instances, the testing signal can be based on the test parameter.

[0151] At 830, the device 110 can calculate a measurement based on the received electrical signals. In some instances, the measurement calculated at 830 can be determined based on the EV testing data 240.

[0152] At 840, the device 110 can evaluate the measurement with the test parameter to determine a test outcome for the first test. In some instances, the test outcome can be a passing outcome or failing outcome based on whether the measurement exceeds the test parameter. For example, the test outcome of the first test can be a failing outcome when the measurement calculated at 830 exceeds the test parameter of the first test.

[0153] At 850, the device can display, on a user interface (e.g., user interface 130), a test result (e.g., test results 250) based on the test outcome. For example, the test result can be a green light when the test outcome is a passing outcome. Alternatively, the test result can be a red light when the test outcome is a failing outcome. In some instances, the user interface 130 can be a graphical user interface.

[0154] Additionally, the test results 250 can be stored in a non-volatile computer-readable memory, such as memory device(s) 232 or data storage 316.

[0155] Moreover, the device 110 can be a handheld portable device having a handle 150.

[0156] In one embodiment, the device 110 is powered by a battery. As illustrated in FIG. 1, the battery can be inserted inside the handle 150 of the device. The handle 150 can be connected to a lid 155 that can be opened to insert the rechargeable battery. In another embodiment, the device 110 can electrically connect, using the connecting unit 140, to a 120-volt outlet, 220-volt outlet, or 480-volt outlet.

[0157] Furthermore, method 800 can further include the device 110 transmitting, using a wireless connection, the test results 250 to a third-party entity.

[0158] In some instances, the device 110 can include a software layer configured to communicate with the electric vehicle, such as performing a handshake with the electric vehicle. Method 800 can further include the device 110 causing the electronic vehicle to perform an action after a handshake has been performed with the electric vehicle. According to one embodiment, the action can be for the electric vehicle to go into an electrical state associated with charging of a battery in the electric vehicle. In some instances, the action can be for the electric vehicle to close or open an electric circuit in the electric vehicle.

[0159] For example, the software layer can enable the device 110 to perform a handshake with the EV. The handshake refers to a communication protocol or process that occurs between an EV and the device before the testing process begins. This process ensures that the device 110 and EV are compatible, and that testing can proceed safely.

[0160] In some instances, the handshake process includes a physical connection to the EV using the EV connector 160, establishment of communication, safety checks, parameter negotiations, start of testing, ongoing communication, and termination of testing. After the physical connection, both the device 110 and the EV can start communicating to identify each other. They exchange information such as the type of vehicle, type of device, user account information, authorization information, state of vehicle, state of the vehicle’s battery, and other relevant information. Additionally, prior to testing, the device 110 can perform safety checks (e.g., prevent short circuit, ensure correct grounding is present, no fault conditions exist) to protect the EV during the testing. During the testing, test parameters can be exchanged between the device 110 and the EV. Moreover, while the vehicle is being tested, the device 110 continues to communicate with the EV, providing updates on the testing process, adjusting requests if needed, and monitoring for any faults. When the testing is completed, the device 110 can terminate the communication to indicate the end of the testing session.

[0161] To perform the handshake from the device 110, the software layer can include software and firmware that are integrated into the testing system 220 (e.g., control unit) of the device 110. The software layer can be responsible for various functions and features of the device 110, including the handshake with the EV. The software layer can support standard communication protocols used in EV charging, such as Open Charge Point Protocol (OCPP) for charger-to-central system communication, ISO standards, and/or IEC standards. For example, ISO 15118 is designed to handle communication between the EV and the charging station, especially for more advanced use-cases like Plug and Charge. Additionally, IEC 61851 is a standard related to the conductive charge system for electric vehicles.

[0162] The software layer can authenticate the device 110 with the EV. If the testing requires user authentication (e g., RFID, mobile app, user account), the software layer can manage this authentication.

[0163] According to some embodiments, the device 110, using the software layer, can perform a handshake with the EV to prepare the EV for the testing session. After the device 100 has been physically connected to the EV, the software layer can send a continuous "pilot signal" (typically a low voltage square wave) to the vehicle. The pilot signal can indicate the device’s readiness and capability. Additionally, the pilot signal can provide a channel for the EV and the device 110 to communicate and negotiate testing parameters. Subsequently, the EV can acknowledge the connection by modifying the pilot signal in a certain way (e.g., by changing the duty cycle of the signal). The device 110 can receive the modified pilot signal, which informs the device that the EV is present and ready to be tested. Based on the pilot signal and communication protocols (like ISO 15118 or IEC 61851), the EV and device 110 can exchange information about the testing capabilities and requirements. Once an agreement is reached between the device 110 and the EV, the device 110 can start the testing procedures.

[0164] While the present subject matter has been described in detail with respect to various specific example embodiments thereof, each example is provided by way of explanation, not limitation of the disclosure. Those skilled in the art, upon attaining an understanding of the foregoing, can readily produce alterations to, variations of, and equivalents to such embodiments. Accordingly, the subject disclosure does not preclude inclusion of such modifications, variations and/or additions to the present subject matter as would be readily apparent to one of ordinary skill in the art. For instance, features illustrated or described as part of one embodiment can be used with another embodiment to yield a still further embodiment. Thus, it is intended that the present disclosure cover such alterations, variations, and equivalents.

Claims

WHAT IS CLAIMED IS:

1. A portable system configured to perform a first test on an electric vehicle, comprising: a battery configured to power the portable system; an electric vehicle connector configured to physically connect a main unit to a charging inlet of the electric vehicle; the main unit, having one or more processors that is powered by the battery, configured to: receive a selection of the first test from a plurality of available tests that is selectable by a user, the first test having a test parameter; in response to the selection of the first test, transmit a testing signal associated with the first test to the charging inlet of the electric vehicle; receive, from the electric vehicle using the electric vehicle connector, electrical signals associated with the first test; calculate a measurement based on the received electrical signals; and evaluate the measurement with the test parameter to determine a test outcome for the first test; and a user interface configured to display a result based on the test outcome.

2. The portable system of claim 1, further comprising: a testing probe configured to connect to a testing point of the electric vehicle.

3. The portable system of claim 2, wherein the testing probe is connected to the main unit using a wired connection.

4. The portable system of claim 2, wherein the testing probe is connected to the main unit using a wireless connection.

5. The portable system of claim 2, wherein the testing probe includes the user interface configured to receive the selection of the first test from the plurality of available tests that is selectable by a user.

6. The portable system of claim 1, wherein the main unit includes the user interface configured to receive the selection of the first test from the plurality of available tests that is selectable by a user.

7. The portable system of claim 1, further comprising: a software layer configured to perform a handshake operation with the electric vehicle, wherein the handshake operation provides authorization for the portable device to perform the first test on the electric vehicle.

8. The portable system of claim 1, wherein the test outcome is either a passing outcome or failing outcome based on whether the measurement exceeds the test parameter.

9. The portable system of claim 1, wherein the testing signal is transmitted after the electric vehicle connector is electrically coupled to the charging inlet of the electric vehicle.

10. The portable system of claim 1, and wherein the user interface is further configured to: display the plurality of available tests to be performed on the electric vehicle, wherein the plurality of available tests includes the first test; and receive a user input selecting the first test from the plurality of available tests.

11. The portable system of claim 1, wherein the plurality of available tests is derived from operational requirements.

12. The portable system of claim 1, wherein the testing signal is preconfigured to test the test parameter of the first test.

13. The portable system of claim 1, wherein the test parameter is determined based on a location associated with the portable device.

14. The portable system of claim 1, wherein the test parameter is a first value for a first region, and the test parameter is a second value for a second region, and wherein the first value is different than the second value.

15. The portable system of claim 1, wherein the portable device is powered by a rechargeable battery.

16. The portable system of claim 1, wherein the portable device electrically couples to a 120-volt outlet, 220-volt outlet, or 480-volt outlet.

17. The portable system of claim 1, wherein the first test is associated with a 480-volt technology.

18. The portable system of claim 1, wherein the result is stored in a non-volatile computer-readable memory.

19. The portable system of claim 1, wherein the main unit is configured to: transmit, using a wireless connection, the result to a third-party entity.

20. The portable system of claim 1, wherein the main unit is configured to: determine vehicle information based on the received electrical signals, the vehicle information includes a vehicle type, vehicle manufacturer, or vehicle model; and update the test parameter based on the vehicle information.

21. The portable system of claim 1, wherein the first test is an earth bond (RPE) test, an insulation (RISO) test, a substitute leakage current (ISL) test, a touch current (ITC) test, a leakage current (IPE) test, a residual-current device (RCD) performance test, a charge cable integrity test, or a protective extra low voltage (PELV) test.

22. The portable system of claim 1, wherein the electric vehicle connector is a type 1 connector, a type 2 connector, or a GB/T connector.

23. The portable system of claim 1, wherein the main unit is configured to: transmit a request to the electric vehicle, wherein the request causes the electric vehicle to perform an action.

24. The portable system of claim 23, wherein the action is for the electric vehicle to go into an electrical state associated with charging of a rechargeable battery in the electric vehicle.

25. The portable system of claim 23, wherein the action is for the electric vehicle to close or open an electric circuit in the electric vehicle.

26. The portable system of claim 1, further comprising: a handle configured to enable the portable device to be handheld.

27. A method for performing a first test on an electric vehicle, the method comprising: receiving a selection of the first test from a plurality of available tests that is selectable by a user, the first test having a test parameter; transmitting, using an electric vehicle connector, a testing signal associated with the first test to the charging inlet of the electric vehicle; receiving, from the electric vehicle using the electric vehicle connector, electrical signals associated with the first test; calculating, using one or more processors, a measurement based on the received electrical signals; and evaluating the measurement with the test parameter to determine a test outcome for the first test; and displaying, using a user interface, a result based on the test outcome.

28. One or more non-transitory, computer readable media storing instructions that are executable by one or more processors to cause a computing system to perform operations, the operations comprising: receiving a selection of the first test from a plurality of available tests that is selectable by a user, the first test having a test parameter; transmitting, using an electric vehicle connector, a testing signal associated with the first test to the charging inlet of the electric vehicle; receiving, from the electric vehicle using the electric vehicle connector, electrical signals associated with the first test; calculating a measurement based on the received electrical signals; evaluating the measurement with the test parameter to determine a test outcome for the first test; and displaying, using a user interface, a result based on the test outcome.