CN219498954U - Leakage protection device, electric connection equipment and electric appliance - Google Patents
Leakage protection device, electric connection equipment and electric appliance Download PDFInfo
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- CN219498954U CN219498954U CN202320192198.2U CN202320192198U CN219498954U CN 219498954 U CN219498954 U CN 219498954U CN 202320192198 U CN202320192198 U CN 202320192198U CN 219498954 U CN219498954 U CN 219498954U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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Abstract
The utility model provides a leakage protection device, comprising: a switching module coupled between the input and output terminals of the power line and configured to control a power connection between the input and output terminals; the leakage detection module is configured to generate a leakage fault signal when a leakage fault occurs in the power line; a driving module coupled to the leakage detection module and the switching module and configured to control the switching module to open or close the electrical connection between the input terminal and the output terminal; the wireless communication module is coupled with the driving module and/or the electric leakage detection module and is configured to be in wireless communication with the remote control equipment, so that the remote control equipment controls the switch module to open or close the power connection, set the functional parameters and/or acquire the electrical information and/or the fault information; and a power supply module configured to supply power to the leakage detection module and the wireless communication module. The leakage protection device can realize remote control and information viewing, and has the advantages of simple circuit structure, low cost and high safety.
Description
Technical Field
The utility model relates to the field of electric appliances, in particular to a leakage protection device, electric connection equipment and an electric appliance.
Background
With the development of society, the number of household appliances is increased and the degree of intellectualization of the appliances is deepened, and the demand for a leakage protection device which is safe enough and can remotely check information and remotely control is increasing. At present, the existing leakage protection devices can only simply realize the leakage protection function, but cannot remotely control and remotely view information. When the user is not in the vicinity of the home appliance, the operation condition of the home appliance, such as whether it is operating normally or malfunctioning, cannot be known.
Disclosure of Invention
Based on the above-mentioned problems, a first aspect of the present utility model proposes a leakage protection device. The leakage protection device comprises a switch module coupled between an input end and an output end of a power line and configured to control power connection between the input end and the output end; a leakage detection module configured to generate a leakage fault signal when a leakage fault occurs in the power line; a drive module coupled to the leakage detection module and the switch module and configured to control the switch module to open or close a power connection between the input and the output; a wireless communication module coupled with the drive module and/or the leakage detection module and configured to wirelessly communicate with a remote control device, thereby causing the remote control device to perform at least one of: controlling the switch module to open or close the electric power connection between the input end and the output end, setting the functional parameters of the leakage protection device, and acquiring the electric information and/or fault information of the leakage protection device; and at least one power module configured to power the leakage detection module and the wireless communication module.
In some embodiments, the wireless communication module is configured to be operable in a timing control mode and is further configured to: and in the timing control mode, receiving control information from the remote control equipment, and if the control information indicates control time, driving the switch module to open or close the electric power connection between the input end and the output end according to the control information in the control time.
In some embodiments, the wireless communication module is further configured to: if the control information does not indicate the control time, driving the switch module to open or close the electric power connection between the input end and the output end according to the control information in a preset control time or the control time indicated by the control information received last time.
In some embodiments, the wireless communication module is further configured to: and counting down according to the control time, and sending counting down information to the remote control equipment according to a preset time interval or responding to a query request of the remote control equipment, and sending the counting down information to the remote control equipment.
In some embodiments, the wireless communication module is configured to be operable in a real-time control mode, and is further configured to: and in the real-time control mode, receiving control information from the remote control equipment, and driving the switch module to open or close the electric power connection between the input end and the output end according to the control information.
In some embodiments, driving the switch module to open or close the electrical connection between the input and the output according to the control information comprises: generating a driving module trigger signal according to the control information; and providing the driving module trigger signal to the driving module or the electric leakage detection module, so that the driving module controls the switch module to open or close the electric power connection between the input end and the output end.
In some embodiments, the wireless communication module is further configured to: receiving the leakage fault signal and storing corresponding fault information; and generating a fault alarm signal based on the leakage fault signal and sending the fault alarm signal to the remote control equipment, or responding to a query request of the remote control equipment and sending the fault information to the remote control equipment.
A second aspect of the present utility model proposes an electrical connection device comprising: a housing; and a leakage protection device according to any one of the embodiments of the first aspect, the leakage protection device being housed in the housing.
A third aspect of the present utility model proposes an electrical appliance comprising: a load device; and an electrical connection device coupled between the power line and the load device for supplying power to the load device, wherein the electrical connection device comprises a leakage protection apparatus according to any of the embodiments of the first aspect.
In the utility model, the leakage protection device can enable a user to acquire electrical information and/or fault information through the remote control equipment, and can also set related functional parameters, thereby realizing remote control of the leakage protection device and remote information viewing. In addition, the leakage protection device has the advantages of simple circuit structure, low cost and high safety.
Drawings
The embodiments are shown and described with reference to the drawings. The drawings serve to illustrate the basic principles and thus only show aspects necessary for understanding the basic principles. The figures are not to scale. In the drawings, like reference numerals refer to like features. In addition, a connection between each frame in the architecture diagram indicates that there is an electrical coupling between two frames, and the absence of a connection between two frames does not indicate that the two frames are not coupled.
Fig. 1 shows a schematic diagram of an earth leakage protection device according to an embodiment of the present utility model;
fig. 2 shows a schematic diagram of a first embodiment of a leakage protection device according to the present utility model;
fig. 3 shows a schematic diagram of a second embodiment of the earth leakage protection device according to the present utility model;
fig. 4 shows a schematic diagram of a third embodiment of the earth leakage protection device according to the present utility model; and
fig. 5 shows a schematic diagram of a fourth embodiment of the earth leakage protection device according to the present utility model.
Detailed Description
In the following detailed description of the preferred embodiments, reference is made to the accompanying drawings which form a part hereof. The accompanying drawings illustrate, by way of example, specific embodiments in which the utility model may be practiced. The illustrated embodiments are not intended to be exhaustive of all embodiments according to the utility model. It is to be understood that other embodiments may be utilized and structural or logical changes may be made without departing from the scope of the present utility model. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present utility model is defined by the appended claims.
Before describing embodiments of the present utility model, some of the terms involved in the present utility model will be explained first for better understanding of the present utility model.
The terms "connected," "coupled," or "coupled" and the like as used herein are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms "a," "an," "a group," or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one.
The terms "comprising," including, "and similar terms used herein should be construed to be open-ended terms, i.e., including, but not limited to," meaning that other elements may also be included. The term "based on" is based at least in part on. The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment," and so forth. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
The utility model aims to provide an electric leakage protection device. The device comprises a wireless communication module which can be in wireless communication with the remote control equipment, so that a user can acquire the electrical information and/or fault information of the device through the remote control equipment and can set related functional parameters of the device, and the remote control of the leakage protection device and remote information viewing are realized. In addition, the leakage protection device has the advantages of simple circuit structure, low cost and high safety.
Fig. 1 shows a schematic diagram of an earth leakage protection device according to an embodiment of the present utility model. As shown in fig. 1, the earth leakage protection device 100 includes a switch module 103, an earth leakage detection module 104, a drive module 105, a wireless communication module 106, and at least one power module 107. The switching module 103 is coupled between the input 101 and the output 102 of the power line and controls the electrical connection between the input 101 and the output 102 of the power line. The leakage detection module 104 generates a leakage fault signal when a leakage fault occurs in the power line. When the power line fails, a leakage current signal is generated on the power line, and the leakage detection module 104 can detect the leakage current signal and generate a leakage fault signal. The driving module 105 is coupled to the leakage detection module 104 and the switching module 103, and controls the switching module 103 to open or close the electrical connection between the input terminal 101 and the output terminal 102. When the leakage detection module 104 generates a leakage fault signal, the driving module 105 receives the leakage fault signal and drives the switching module 103 to disconnect the electric power connection between the input terminal 101 and the output terminal 102 under the action of the leakage fault signal. The wireless communication module 106 is coupled to the driving module 105 and/or the leakage detection module 104 and is in wireless communication with the remote control device, thereby causing the remote control device to perform at least one of the following: the control switch module 103 opens or closes the electrical connection between the input terminal 101 and the output terminal 102, sets the functional parameters of the earth leakage protection device 100, and obtains electrical information and/or fault information of the earth leakage protection device 100. At least one power module 107, which may be one or more power modules, provides power to the leakage detection module 104 and the wireless communication module 106. The power module 107 may also convert the ac power on the power line into dc power and provide the dc power to the leakage detection module 104 and the wireless communication module 106.
The remote control device may be any device having wireless communication capabilities, such as a cell phone, notebook computer, desktop computer, tablet device, console, handheld control device, etc. The remote control device may have control software and/or a mechanical control switch. The functional parameter may include any parameter of the earth leakage protection device 100 that is settable, such as a timing time for opening or closing the power connection. It will be appreciated that the earth leakage protection device 100 may also include electrical detection modules (e.g., current detection or voltage detection, not shown in fig. 1), and the wireless communication module 106 may be coupled to one or more of these electrical detection modules and receive electrical data (e.g., voltage and current values) detected thereby, and then store the corresponding electrical information in its own memory and/or transmit it to a remote control device (e.g., may transmit it upon receipt of a query request). The electrical information may include at least one of real-time and/or historical electrical data, measurement time, number of measurements, trend graph, etc. of the earth leakage protection device 100. Further, it is understood that the earth leakage protection device 100 may include other fault detection modules in addition to the earth leakage detection module 104 for detecting other faults, such as an earth leakage fault, an over-current fault, a short circuit fault, a current overload, etc. The wireless communication module 106 may also be coupled to one or more of these fault detection modules and receive fault signals generated by the fault detection modules when they detect a corresponding fault, and then store the corresponding fault information in its own memory and/or send it to a remote control device (e.g., may be sent actively when a fault occurs or may be sent when a query request is received). The fault information may include at least one of fault type, fault time, number of times of occurrence of the same kind of fault, advice to eliminate the fault, and the like.
The leakage protection device 100 of the present utility model can wirelessly communicate with a remote control device through a wireless communication module, so that a user can obtain electrical information and/or fault information of the user through the remote control device, and can set relevant functional parameters of the user, thereby realizing remote control of the leakage protection device 100 and remote information viewing. In addition, the leakage protection device 100 has a simple circuit structure, low cost and high safety.
In some embodiments, the wireless communication module 106 may operate in a timing control mode. In the timing control mode, the wireless communication module 106 may receive control information from the remote control device, and if the control information indicates a control time, the switch module 103 is driven to open or close the power connection between the input terminal 101 and the output terminal 102 according to the control information at the control time. Specifically, the control information may include a control command to open or close the power connection and a specific control time (e.g., 18:00 to open the power connection), and may also include a control command and a duration from the control time (e.g., 5 hours later to open the power connection). The user can set the control instruction and control time/duration through the remote control device. After receiving the control information, the wireless communication module 106 drives the switch module 103 to open or close the power connection according to the control instruction at the control time indicated by the control information. The wireless communication module 106 may be coupled to one or both of the leakage detection module 104 and the driving module 105, and when the switch module 103 needs to be driven, the wireless communication module 106 generates a driving module trigger signal according to the control information, and provides the signal to the driving module 105 or the leakage detection module 106, so that the driving module controls the switch module 103 to open or close the electrical connection between the input end 101 and the output end 102.
In some embodiments, in the timing control mode, if the control information does not indicate the control time, for example, the user does not set the control time/duration, the wireless communication module 106 may drive the switch module 103 to open or close the electrical connection between the input terminal 101 and the output terminal 102 according to the control command at a preset control time (such as a default control time) or a control time indicated by the control information received last time. Through the timing control mode, a user can set the switching time of the electric appliance according to the needs, and convenience is provided for the user.
In some embodiments, the wireless communication module 106 may also count down according to the control time and send count down information to the remote control device at preset time intervals. In addition, the remote control device may also send a query request for countdown information to the wireless communication module 106, and the wireless communication module 106 may send the countdown information to the remote control device 108 in response to the query request. The user may view the countdown information through the remote control device.
In some embodiments, the wireless communication module 106 may operate in a real-time control mode. In the real-time control mode, the wireless communication module 106 receives control information from the remote control device and drives the switching module 103 to open or close the electrical connection between the input 101 and the output 102 according to the control information. In particular, the control information may comprise control instructions to open or close the power connection. The user may set the control instructions through a remote control device. The wireless communication module 106, after receiving the control information, drives the switching module 103 to open or close the power connection according to the control instruction. The wireless communication module 106 may be coupled to one or both of the leakage detection module 104 and the driving module 105, and when the switch module 103 needs to be driven, the wireless communication module 106 generates a driving module trigger signal according to the control information, and provides the signal to the driving module or the leakage detection module, so that the driving module 105 controls the switch module 103 to open or close the electrical connection between the input end 101 and the output end 102. Through the real-time control mode, a user can control the switch of the electric appliance in real time according to the needs, and convenience is provided for the user.
In some embodiments, the wireless communication module 106 may also receive the leakage fault signal and store corresponding fault information, and generate a fault alert signal based on the leakage fault signal and transmit to the remote control device. Thus, the user can be notified at the first time when the electric appliance fails, so that the user can conveniently conduct subsequent processing. In addition, the remote control device may also send a query request for fault information to the wireless communication module 106, and the wireless communication module 106 sends the fault information to the remote control device 108 in response to the query request.
Fig. 2 shows a schematic diagram of a first embodiment of the earth leakage protection device according to the present utility model. As shown in fig. 2, the earth leakage protection device 200 includes a switch module 103, an earth leakage detection module 104, a driving module 105, a wireless communication module 106, and a power module 107. The power line includes two current carrying lines. As shown in fig. 2, the switching module 103 comprises a reset switch for controlling the electrical connection between the input 101 and the output 102 of the two current lines. The leakage detection module 104 includes a leakage detection coil 141 through which two current lines pass, and a signal processing circuit 142 coupled in series with the leakage detection coil 141. The signal processing circuit 142 may include, for example, a leakage detection chip and its peripheral circuits. The drive module 105 includes a drive coil 151 and a drive circuit 152 coupled in series with the drive coil 151. The driving circuit 152 may include, for example, at least one semiconductor element such as a thyristor, a bipolar transistor, a field effect transistor, and a photocoupling element. The signal processing circuit 142 is coupled in series with the driving circuit 152. The driving coil 151 generates electromagnetic force for driving the switching module 103, and the driving circuit 152 causes the driving coil to generate electromagnetic force when the signal processing circuit 142 generates the leakage fault signal, thereby driving the switching module 103 to disconnect the power connection between the input terminal 101 and the output terminal 102. The wireless communication module 106 is coupled to the signal processing circuit 142 and communicates wirelessly with the remote control device 108. The remote control device 108 may control the switch module 103 to open or close the power connection between the input terminal 101 and the output terminal 102, set the functional parameters of the leakage protection apparatus 200, and obtain the electrical information and/or the fault information of the leakage protection apparatus 200 through communication with the wireless communication module 106. The power module 107 is coupled to the two current carrying lines, the signal processing circuit 142 and the wireless communication module 106, and converts the ac power on the current carrying lines into dc power to supply power to the signal processing circuit 142 and the wireless communication module 106.
Under normal operation, the two current lines are connected to the power grid respectively, the switch module 103 is in a reset state (i.e. a closed state), and the ac input terminal 101 is connected to the ac output terminal 102. When one or both of the two current lines have leakage current, that is, when a leakage current signal is present on the power line or when a leakage fault occurs on the power line, the leakage detection coil 141 detects that the two current lines have unbalanced current, generates a corresponding leakage signal (such as an induced voltage), and transmits the leakage signal to the signal processing circuit 142. The signal processing circuit 142 compares the magnitude of the leakage signal with a threshold value, and when the magnitude of the leakage signal exceeds the threshold value, the signal processing circuit 142 generates a leakage fault signal and provides the leakage fault signal to the driving circuit 152, which triggers the driving circuit 152, and thus the driving coil 151 generates a current change, thereby generating an electromagnetic force, and the driving switch module 103 disconnects the power connection between the ac input terminal 101 and the ac output terminal 102. The signal processing circuit 142 also provides the leakage fault signal to the wireless communication module 106, and the wireless communication module 106 stores fault information corresponding to the leakage fault signal in its own memory and transmits to the remote control device 108. The fault information may include at least one of a fault type (leakage fault), a fault time, the number of times of occurrence of the same kind of fault, advice to eliminate the fault, and the like.
Further, the wireless communication module 106 may operate in a real-time control mode and a timing control mode. For example, a remote control application may be provided, and after the user installs the remote control application on his mobile phone or computer, the user selects a real-time control mode or a timing control mode in the application, and sets control information in the corresponding control mode. For another example, the user may select a real-time control mode or a timed control mode on the hand-held control device via a mechanical button.
In the real-time control mode, the user sends control information to the wireless communication module 106 via the remote control device 108. The control information includes a control instruction to open or close the power connection. The wireless communication module 106, after receiving the control information, drives the switching module 103 to open or close the power connection according to the control instruction. For example, the user selects a real-time control mode on the remote control device 108 and sets control information for disconnecting the power connection. The remote control device 108 sends the control information to the wireless communication module 106. After receiving the control information, the wireless communication module 106 generates a driving module trigger signal (e.g., an analog leakage signal) and provides the signal to the signal processing circuit 142 of the leakage detection module 104. The signal processing circuit 142 compares the magnitude of the driving module trigger signal with a threshold value, and when the magnitude of the driving module trigger signal exceeds the threshold value, the signal processing circuit 142 generates a leakage fault signal and provides the signal to the driving circuit 152, which triggers the driving circuit 152, and thus the driving coil 151 generates a current change, thereby generating an electromagnetic force, and the driving switch module 103 disconnects the power connection between the ac input terminal 101 and the ac output terminal 102.
In the timing control mode, the user sends control information to the wireless communication module 106 through the remote control device 108. The control information may include control instructions to open or close the power connection. If the control information indicates a control time, for example, the control information further includes a specific control time or a duration of the control time, the wireless communication module 106 drives the switch module 103 to open or close the power connection according to the control instruction at the control time indicated by the control information. If the control information does not indicate the control time, for example, the control information does not include a specific control time or a duration of the distance control time, the wireless communication module 106 drives the switch module 103 to open or close the power connection according to the control instruction at the preset control time or the control time indicated by the control information received last time. For example, the user selects a timing control mode on the remote control device 108 and sets control information for disconnecting the power connection at a specific control time. The remote control device 108 sends the control information to the wireless communication module 106. If the control information indicates the control time, the wireless communication module 106 counts down according to the control time, and sends count down information to the remote control device 108 at preset time intervals. If the control information does not indicate the control time, the wireless communication module 106 counts down according to the preset control time or the control time indicated by the control information received last time, and sends the count down information to the remote control device 108 according to the preset time interval. The user may view the countdown information through the remote control device 108. At the end of the countdown, when the control time is reached, the remote control device 108 generates a drive module trigger signal (e.g., an analog leakage signal) and provides the signal to the signal processing circuit 142 of the leakage detection module 104. The signal processing circuit 142 compares the driving module trigger signal with a threshold value, and when the driving module trigger signal exceeds the threshold value, the signal processing circuit 142 generates a leakage fault signal and provides the signal to the driving circuit 152, which triggers the driving circuit 152, so that a current change is generated in the driving coil 151, thereby generating electromagnetic force, and the driving switch module 103 disconnects the power connection between the ac input terminal 101 and the ac output terminal 102.
Fig. 3 shows a schematic diagram of a second embodiment of the earth leakage protection device according to the present utility model. In contrast to the embodiment of fig. 2, the embodiment of fig. 3 differs primarily in that the wireless communication module 106 is coupled to the drive circuitry 152 of the drive module 105, rather than to the signal processing circuitry 142.
Under normal operation, the two current lines are connected to the power grid respectively, the switch module 103 is in a reset state (i.e. a closed state), and the ac input terminal 101 is connected to the ac output terminal 102. When one or both of the two current lines have leakage current, that is, when a leakage current signal is present on the power line or when a leakage fault occurs on the power line, the leakage detection coil 141 detects that the two current lines have unbalanced current, generates a corresponding leakage signal (such as an induced voltage), and transmits the leakage signal to the signal processing circuit 142. The signal processing circuit 142 compares the magnitude of the leakage signal with a threshold value, and when the magnitude of the leakage signal exceeds the threshold value, the signal processing circuit 142 generates a leakage fault signal and provides the leakage fault signal to the driving circuit 152, which triggers the driving circuit 152, and thus the driving coil 151 generates a current change, thereby generating an electromagnetic force, and the driving switch module 103 disconnects the power connection between the ac input terminal 101 and the ac output terminal 102.
Further, the wireless communication module 106 may operate in a real-time control mode and a timing control mode. For example, a remote control application may be provided, and after the user installs the remote control application on his mobile phone or computer, the user selects a real-time control mode or a timing control mode in the application, and sets control information in the corresponding control mode. For another example, the user may select a real-time control mode or a timed control mode on the hand-held control device via a mechanical button.
In the real-time control mode, the user sends control information to the wireless communication module 106 via the remote control device 108. The control information includes a control instruction to open or close the power connection. The wireless communication module 106, after receiving the control information, drives the switching module 103 to open or close the power connection according to the control instruction. For example, the user selects a real-time control mode on the remote control device 108 and sets control information for disconnecting the power connection. The remote control device 108 sends the control information to the wireless communication module 106. After receiving the control information, the wireless communication module 106 generates a driving module triggering signal (such as an analog leakage fault signal), and provides the driving module triggering signal to the driving circuit 152, so as to trigger the driving circuit 152, and further generate a current change in the driving coil 151, thereby generating an electromagnetic force, and the driving switch module 103 breaks the power connection between the ac input terminal 101 and the ac output terminal 102.
In the timing control mode, the user sends control information to the wireless communication module 106 through the remote control device 108. The control information may include control instructions to open or close the power connection. If the control information indicates a control time, for example, the control information further includes a specific control time or a duration of the control time, the wireless communication module 106 drives the switch module 103 to open or close the power connection according to the control instruction at the control time indicated by the control information. If the control information does not indicate the control time, for example, the control information does not include a specific control time or a duration of the distance control time, the wireless communication module 106 drives the switch module 103 to open or close the power connection according to the control instruction at the preset control time or the control time indicated by the control information received last time. For example, the user selects a timing control mode on the remote control device 108 and sets control information for disconnecting the power connection at a specific control time. The remote control device 108 sends the control information to the wireless communication module 106. If the control information indicates the control time, the wireless communication module 106 counts down according to the control time, and sends count down information to the remote control device 108 at preset time intervals. If the control information does not indicate the control time, the wireless communication module 106 counts down according to the preset control time or the control time indicated by the control information received last time, and sends the count down information to the remote control device 108 according to the preset time interval. The user may view the countdown information through the remote control device 108. At the end of the countdown, when the control time is reached, the remote control device 108 generates a driving module trigger signal (e.g., an analog leakage fault signal) and provides the signal to the driving circuit 152, triggering the driving circuit 152, thereby generating a current change in the driving coil 151 and thus generating an electromagnetic force, and driving the switching module 103 to disconnect the power connection between the ac input terminal 101 and the ac output terminal 102.
Fig. 4 shows a schematic diagram of a third embodiment of the earth leakage protection device according to the present utility model. Compared to the embodiment of fig. 2, the embodiment of fig. 4 mainly differs in that the wireless communication module 106 is coupled to both the signal processing circuit 142 of the leakage detection module 104 and the driving circuit 152 of the driving module 105.
Under normal operation, the two current lines are connected to the power grid respectively, the switch module 103 is in a reset state (i.e. a closed state), and the ac input terminal 101 is connected to the ac output terminal 102. When one or both of the two current lines have leakage current, that is, when a leakage current signal is present on the power line or when a leakage fault occurs on the power line, the leakage detection coil 141 detects that the two current lines have unbalanced current, generates a corresponding leakage signal (such as an induced voltage), and transmits the leakage signal to the signal processing circuit 142. The signal processing circuit 142 compares the magnitude of the leakage signal with a threshold value, and when the magnitude of the leakage signal exceeds the threshold value, the signal processing circuit 142 generates a leakage fault signal and provides the leakage fault signal to the driving circuit 152, which triggers the driving circuit 152, and thus the driving coil 151 generates a current change, thereby generating an electromagnetic force, and the driving switch module 103 disconnects the power connection between the ac input terminal 101 and the ac output terminal 102. The signal processing circuit 142 also provides the leakage fault signal to the wireless communication module 106, and the wireless communication module 106 stores fault information corresponding to the leakage fault signal in its own memory and transmits to the remote control device 108. The fault information may include at least one of a fault type (leakage fault), a fault time, the number of times of occurrence of the same kind of fault, advice to eliminate the fault, and the like.
Further, the wireless communication module 106 may operate in a real-time control mode and a timing control mode. For example, a remote control application may be provided, and after the user installs the remote control application on his mobile phone or computer, the user selects a real-time control mode or a timing control mode in the application, and sets control information in the corresponding control mode. For another example, the user may select a real-time control mode or a timed control mode on the hand-held control device via a mechanical button.
In the real-time control mode, the user sends control information to the wireless communication module 106 via the remote control device 108. The control information includes a control instruction to open or close the power connection. The wireless communication module 106, after receiving the control information, drives the switching module 103 to open or close the power connection according to the control instruction. For example, the user selects a real-time control mode on the remote control device 108 and sets control information for disconnecting the power connection. The remote control device 108 sends the control information to the wireless communication module 106. After receiving the control information, the wireless communication module 106 generates a driving module triggering signal (such as an analog leakage fault signal), and provides the driving module triggering signal to the driving circuit 152, so as to trigger the driving circuit 152, and further generate a current change in the driving coil 151, thereby generating an electromagnetic force, and the driving switch module 103 breaks the power connection between the ac input terminal 101 and the ac output terminal 102.
In the timing control mode, the user sends control information to the wireless communication module 106 through the remote control device 108. The control information may include control instructions to open or close the power connection. If the control information indicates a control time, for example, the control information further includes a specific control time or a duration of the control time, the wireless communication module 106 drives the switch module 103 to open or close the power connection according to the control instruction at the control time indicated by the control information. If the control information does not indicate the control time, for example, the control information does not include a specific control time or a duration of the distance control time, the wireless communication module 106 drives the switch module 103 to open or close the power connection according to the control instruction at the preset control time or the control time indicated by the control information received last time. For example, the user selects a timing control mode on the remote control device 108 and sets control information for disconnecting the power connection at a specific control time. The remote control device 108 sends the control information to the wireless communication module 106. If the control information indicates the control time, the wireless communication module 106 counts down according to the control time, and sends count down information to the remote control device 108 at preset time intervals. If the control information does not indicate the control time, the wireless communication module 106 counts down according to the preset control time or the control time indicated by the control information received last time, and sends the count down information to the remote control device 108 according to the preset time interval. The user may view the countdown information through the remote control device 108. At the end of the countdown, when the control time is reached, the remote control device 108 generates a driving module trigger signal (e.g., an analog leakage fault signal) and provides the signal to the driving circuit 152, triggering the driving circuit 152, thereby generating a current change in the driving coil 151 and thus generating an electromagnetic force, and driving the switching module 103 to disconnect the power connection between the ac input terminal 101 and the ac output terminal 102.
Fig. 5 shows a schematic diagram of a fourth embodiment of the earth leakage protection device according to the present utility model. The embodiment of fig. 5 differs from the embodiment of fig. 4 mainly in that the leakage protection device 400 comprises two power supply modules. The first power module 107a is coupled to the two current carrying lines and the wireless communication module 106, and converts the ac power on the current carrying lines into dc power to supply power to the wireless communication module 106. The second power module 107b is coupled to the two current carrying lines and the signal processing circuit 142, and converts the ac power on the current carrying lines into dc power to supply power to the signal processing circuit 142. The operation principle of the leakage protection device 400 is the same as that of the leakage protection device 300 in fig. 4, and will not be described herein.
A second aspect of the present utility model proposes an electrical connection device comprising: a housing; and a leakage protection device according to any one of the above embodiments, the leakage protection device being accommodated in the housing.
A third aspect of the present utility model proposes an electrical appliance comprising: a load device; and an electrical connection device coupled between the power line and the load device for providing power to the load device, the electrical connection device comprising the earth leakage protection apparatus of any of the above embodiments.
Therefore, while the present utility model has been described with reference to specific examples, which are intended to be illustrative only and not to be limiting of the utility model, it will be apparent to those of ordinary skill in the art that changes, additions or deletions may be made to the disclosed embodiments without departing from the spirit and scope of the utility model.
Claims (9)
1. An earth leakage protection device, characterized in that it comprises:
a switching module coupled between an input and an output of a power line and configured to control a power connection between the input and the output;
a leakage detection module configured to generate a leakage fault signal when a leakage fault occurs in the power line;
a drive module coupled to the leakage detection module and the switch module and configured to control the switch module to open or close a power connection between the input and the output;
a wireless communication module coupled with the drive module and/or the leakage detection module and configured to wirelessly communicate with a remote control device, thereby causing the remote control device to perform at least one of: controlling the switch module to open or close the electric power connection between the input end and the output end, setting the functional parameters of the leakage protection device, and acquiring the electric information and/or fault information of the leakage protection device; and
at least one power module configured to power the leakage detection module and the wireless communication module.
2. The earth leakage protection device of claim 1, wherein the wireless communication module is configured to be operable in a timing control mode and is further configured to:
and in the timing control mode, receiving control information from the remote control equipment, and if the control information indicates control time, driving the switch module to open or close the electric power connection between the input end and the output end according to the control information in the control time.
3. The leakage protection device of claim 2, wherein the wireless communication module is further configured to:
if the control information does not indicate the control time, driving the switch module to open or close the electric power connection between the input end and the output end according to the control information in a preset control time or the control time indicated by the control information received last time.
4. The leakage protection device of claim 2, wherein the wireless communication module is further configured to: and counting down according to the control time, and sending counting down information to the remote control equipment according to a preset time interval or responding to a query request of the remote control equipment, and sending the counting down information to the remote control equipment.
5. The earth leakage protection device of claim 1, wherein the wireless communication module is configured to be operable in a real-time control mode and is further configured to:
and in the real-time control mode, receiving control information from the remote control equipment, and driving the switch module to open or close the electric power connection between the input end and the output end according to the control information.
6. The leakage protection device of any one of claims 2-5, wherein driving the switch module to open or close the electrical connection between the input and the output according to the control information comprises:
generating a driving module trigger signal according to the control information; and
and providing the driving module triggering signal for the driving module or the electric leakage detection module, so that the driving module controls the switch module to open or close the electric power connection between the input end and the output end.
7. The leakage protection device of claim 1, wherein the wireless communication module is further configured to:
receiving the leakage fault signal and storing corresponding fault information; and
and generating a fault alarm signal based on the leakage fault signal and sending the fault alarm signal to the remote control equipment, or responding to a query request of the remote control equipment and sending the fault information to the remote control equipment.
8. An electrical connection apparatus, the electrical connection apparatus comprising:
a housing; and
the earth leakage protection device of any one of claims 1-7, the earth leakage protection device being housed in the housing.
9. An electrical appliance, the electrical appliance comprising:
a load device;
an electrical connection device coupled between a power cord and the load device for powering the load device, wherein the electrical connection device comprises the earth leakage protection apparatus according to any one of claims 1-7.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320192198.2U CN219498954U (en) | 2023-02-13 | 2023-02-13 | Leakage protection device, electric connection equipment and electric appliance |
| US18/169,756 US20240272237A1 (en) | 2023-02-13 | 2023-02-15 | Leakage current detection and interruption device for power cord and related electrical connectors and electrical appliances |
| US18/349,137 US20240272238A1 (en) | 2023-02-13 | 2023-07-08 | Leakage current detection and interruption device for power cord and related electrical connectors and electrical appliances |
| US18/818,335 US20240421582A1 (en) | 2023-02-13 | 2024-08-28 | Leakage current detection and interruption device for power cord and related electrical connectors and electrical appliances |
| US19/082,731 US20250219391A1 (en) | 2023-02-13 | 2025-03-18 | Leakage protection devices, electrical connection equipment and electrical appliances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320192198.2U CN219498954U (en) | 2023-02-13 | 2023-02-13 | Leakage protection device, electric connection equipment and electric appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219498954U true CN219498954U (en) | 2023-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320192198.2U Active CN219498954U (en) | 2023-02-13 | 2023-02-13 | Leakage protection device, electric connection equipment and electric appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219498954U (en) |
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2023
- 2023-02-13 CN CN202320192198.2U patent/CN219498954U/en active Active
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