WO2018218686A1 - Method for detecting swelling of rechargeable battery, and portable electronic device - Google Patents

Abstract

Provided is a terminal, comprising: a housing, the housing comprising a rear cover (260, 560) of the terminal; a rechargeable battery (190, 250, 350, 450) placed in an accommodating space (380, 480), in the housing, for the rechargeable battery, the rechargeable battery (190, 250, 350, 450) comprising a first surface and a second surface, and the first surface being close to the rear cover (260, 560) of the terminal; a first electrode and a second electrode, the first electrode and the second electrode being located at an inner side of the rear cover (260, 560) of the terminal; a conductive sheet (453) located on the first surface of the rechargeable battery (190, 250, 350, 450), the conductive sheet (453) being opposite the first electrode and the second electrode; a detector (691), an input end thereof being connected to the first electrode and the second electrode, and used for detecting a swelling state of the rechargeable battery (190, 250, 350, 450); and a processing unit (692) connected to an output end of the detector and used for controlling, based on the swelling state of the rechargeable battery (190, 250, 350, 450), the input of electricity into the rechargeable battery. The terminal can detect, in a timely manner, whether a battery is swollen.

Description

Method for detecting bulging of rechargeable battery and portable electronic device Technical field

The present application relates to the safety of rechargeable batteries, and more particularly to a method and portable electronic device for detecting bulging of rechargeable batteries.

Background technique

Portable electronic devices are typically powered by a rechargeable battery in which the rechargeable battery is mounted. There are a variety of rechargeable batteries, such as nickel cadmium, nickel metal hydride or lithium ion rechargeable batteries, or lithium ion polymer rechargeable batteries. Lithium-ion rechargeable batteries are becoming more and more versatile due to their good cycle performance, low leakage and high energy storage.

Rechargeable batteries used in high temperature or high voltage or over-discharge, aging, etc., will cause the battery to swell, specifically in the thickness of the rechargeable battery. After the rechargeable battery is inflated, the portable electronic device casing is opened as the pressure increases, and the entire portable electronic device is deformed. The bulging of a rechargeable battery increases the risk of leakage of the rechargeable battery, fire, and the like. There is therefore a need for a method and apparatus that is capable of detecting the bulging of a rechargeable battery.

Summary of the invention

The application provides a terminal that can detect the bulging of a rechargeable battery.

A first aspect provides a terminal, comprising: a housing including a rear cover of the terminal; a rechargeable battery disposed in a receiving space of the rechargeable battery in the housing, the The rechargeable battery includes a first surface adjacent to a back cover of the terminal, a first electrode and a second electrode, the first electrode and the second electrode being located at a back cover of the terminal An inner side; a conductive sheet on the first surface of the rechargeable battery, the conductive sheet being opposite to the first electrode and the second electrode; and a detector having an input end connected to the first electrode and the a second electrode for detecting an inflation state of the rechargeable battery, and a processing unit connected to an output of the detector for controlling the rechargeable based on an inflation state of the rechargeable battery Battery power input.

According to a first aspect, in a first possible implementation of the first aspect, an outer surface of the package of the rechargeable battery is made of a conductive material, and the conductive sheet is a package of the rechargeable battery. Part of the outer surface.

A second aspect provides a terminal, comprising: a housing including a rear cover of the terminal; a rechargeable battery disposed in a receiving space of the rechargeable battery in the housing, the The rechargeable battery includes a first surface adjacent to a back cover of the terminal, a first electrode and a second electrode, the first electrode and the second electrode being located in the rechargeable battery a first surface; a conductive sheet located inside the back cover of the terminal, the conductive sheet being opposite to the first electrode and the second electrode; a detector having an input end connected to the first electrode and the first a second electrode for detecting an inflation state of the rechargeable battery; a processing unit connected to an output of the detector for controlling the rechargeable battery based on an inflation state of the rechargeable battery Battery input.

According to a second aspect, in a first possible implementation of the second aspect, an inner surface of the back cover is electrically conductive, and the conductive sheet is a part of the back cover.

In combination with the above aspects and various possible implementations, optionally, the first electrode, the second electrode, and the outer surface of the conductive sheet have a film of a non-conductive medium.

In combination with the above aspects and various possible implementations, the detector is optionally a capacitance detector or a voltage detector or a current detector.

In combination with the above aspects and various possible implementations, optionally, the conductive sheet is grounded, and the first electrode is connected An alternating voltage source, the second electrode being connected in series with the reference capacitor.

In combination with the above aspects and various possible implementations, optionally, the detector detects a battery inflation state by detecting an electrical physical quantity between the first electrode and the second electrode, the conductive sheet and the A change in the distance between the first electrode and the second electrode causes the electrical physical quantity to change.

In combination with the above aspects and various possible implementations, optionally, the conductive strips are not connected to the input of the detector.

In combination with the above aspects and various possible implementations, optionally, the processing unit is configured to control a charging current or a charging amount or a charging of the rechargeable battery based on an inflation state of the rechargeable battery. Voltage.

In combination with the above aspects and various possible implementations, optionally, the processing unit is configured to switch a rechargeable battery charging mode based on an inflated state of the rechargeable battery, the rechargeable battery charging mode Includes high current charging mode, normal charging mode and stop charging mode.

A third aspect provides a rechargeable battery disposed in a receiving space of a rechargeable battery of a terminal, comprising: a rechargeable battery module, a first electrode and a second electrode, the first electrode and the second The electrode is located on one surface of the rechargeable battery module, the first electrode and the second electrode are opposite to the conductive sheet on the terminal; the detector has an input end connected to the first electrode and the first a second detection for detecting an inflation state of the rechargeable battery, the output end of the detector being electrically connected to a processing unit of the terminal, and transmitting an inflation state of the rechargeable battery to the processing unit The processing unit is caused to control an electrical input to the rechargeable battery module in accordance with an inflation state of the rechargeable battery.

According to a third aspect, in a first possible implementation of the third aspect, the first electrode, the second electrode, and a film having a non-conductive medium.

According to the third aspect or the first possible implementation manner of the third aspect, in a second possible implementation manner of the third aspect, the detector is a capacitance detector or a voltage detector or a current detector

According to a third possible implementation manner of the third aspect to the third aspect, in a third possible implementation manner of the third aspect, the first electrode is connected to an AC voltage source, and the second electrode and the reference capacitor string are Pick up.

A fourth aspect provides a terminal, comprising: a housing including a rear cover of the terminal; a rechargeable battery disposed in a receiving space of the rechargeable battery in the housing, the re The rechargeable battery includes a first surface adjacent to a back cover of the terminal, a first electrode and a second electrode, the first electrode and the second electrode being located at a back cover of the terminal An inner side; a conductive sheet on the first surface of the rechargeable battery, the conductive sheet being opposite to the first electrode and the second electrode; and a detector having an input end connected to the first electrode and the ground Means for detecting an inflation state of the rechargeable battery, and a processing unit connected to an output of the detector for controlling a power input to the rechargeable battery based on an inflation state of the rechargeable battery .

A fifth aspect provides a terminal, comprising: a housing including a rear cover of the terminal; a rechargeable battery disposed in a receiving space of the rechargeable battery in the housing, the The rechargeable battery includes a first surface adjacent to a back cover of the terminal, a first electrode and a second electrode, the first electrode and the second electrode being located in the rechargeable battery a first surface; a conductive sheet located inside the back cover of the terminal, the conductive sheet being opposite to the first electrode and the second electrode; and a detector having an input end connected to the first electrode and the ground Detecting an inflation state of the rechargeable battery; and processing a unit connected to an output of the detector for controlling a power input to the rechargeable battery based on an inflation state of the rechargeable battery.

The terminal provided by the present application can detect the inflation state of the rechargeable battery, thereby controlling the use of the rechargeable battery, and ensuring the safe use of the rechargeable battery.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings to be used in the description of the embodiments will be briefly described below. In the drawings, the same reference numerals are given to the corresponding parts.

1 is a schematic structural diagram of a circuit of a mobile phone provided by some embodiments of the present application;

2 is an exploded perspective view of a mobile phone provided by some embodiments of the present application;

3 is a schematic diagram showing the planar internal structure of a mobile phone according to some embodiments of the present application;

4 shows a front view of a mobile phone of some embodiments of the present application;

5A-5D are cross-sectional views showing a mobile phone of some embodiments of the present application;

6A and 6B are schematic diagrams showing the circuit structure of a mobile phone according to some embodiments of the present application;

7A shows a circuit diagram of detecting bulging in accordance with an embodiment of the present application;

Figure 7B shows an equivalent circuit of the circuit shown in Figure 7A;

FIG. 8 is a circuit diagram showing detection of bulging according to another embodiment of the present application; FIG.

9 illustrates a flow chart for monitoring bulging of a rechargeable battery in accordance with an embodiment of the present application;

10A-10C illustrate schematic diagrams of interfaces of a mobile phone in accordance with some embodiments of the present application;

11 shows a flow chart of a mobile phone charging method in accordance with an embodiment of the present application;

12A-12C illustrate schematic views of the shape of a detecting electrode in accordance with an embodiment of the present application.

detailed description

The technical solutions in the embodiments will be described below in conjunction with the drawings in some embodiments.

The terms "including", "comprising", "comprising", or "comprising" are used in the application to mean the existence of the corresponding function, operation, element, etc. disclosed, and do not limit one or more additional functions. , operations, components, etc. In addition, the term "comprising" or "comprises" or "comprises" or "comprises" or "comprises" or "comprises" Operation, element, component or combination thereof.

The term "A or B", "at least one of A or / and B" or "one or more of A or / and B" as used herein includes any or all of the words enumerated therewith. . For example, "A or B", "at least one of A and B" or "at least one of A or B" describes that (1) includes A; (2) includes B; or (3) includes A and B By.

Although terms such as "first" and "second" may be used to modify various elements of the various embodiments, these terms do not limit the corresponding elements. For example, these terms do not limit the order and/or importance of the corresponding elements. These terms can be used to distinguish one element from another. For example, both the first user device and the second user device are user devices, but they indicate different user devices. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present application.

The expression "configured to (or set to)" as used herein may be interchanged with "fit for", "capable of", "designed as", "suitable", "manufactured as" or "capable" depending on the circumstances. The term "configured to (set to)" may not necessarily mean "designed specifically for" in terms of hardware. Conversely, the expression "a device configured as" can mean that the device, in some cases, "can..." along with other devices or components. For example, "a processor configured to (set to) execute A, B, and C" may be a dedicated processor (eg, an embedded processor) for performing a corresponding operation, or by executing one or one stored in a storage device A plurality of software programs to perform a corresponding general purpose processor (eg, a central processing unit (CPU) or an application processor (AP)).

Portable electronic device, portable graphical user interface for portable electronic device, and use of the portable electronic device An associated embodiment of the device. The portable electronic device may be a mobile phone (also called a smart phone), a tablet personal computer, a personal digital assistant (PDA), or an e-book reader (English: e-book reader) Or a wearable device (Wearable Device), a computer, etc., the portable electronic device can be wired access or wireless access (such as 2G (second generation mobile phone communication technical specification), 3G (third generation mobile communication technology) Specifications), 4G (fourth generation mobile communication technical specifications), 5G (fifth generation mobile communication technical specifications) or W-LAN (wireless local area network) or communication methods that may occur in the future establish communication with the network. It will be apparent to those skilled in the art that portable electronic devices are not limited to the above devices.

For convenience of explanation, in the following embodiments, the portable electronic device will be described by taking a mobile phone as an example. FIG. 1 is a schematic structural diagram of a mobile phone 100 according to an embodiment of the present application. The mobile phone can support multiple applications, such as a phone application, an instant messaging application, a digital camera and/or camera application, a web browsing application, Music and/or video playback applications, video communication applications, social networking applications, financial and financial applications, weather applications, shopping applications, office applications, and the like.

FIG. 1 is a block diagram showing a partial structure of a mobile phone 100 provided by an embodiment of the present application. Referring to FIG. 1, the mobile phone 100 includes an RF (Radio Frequency) circuit 110, a memory 120, an input unit 130, a display unit 140, a sensor 150, an audio circuit 160, a WiFi (Wireless Fidelity) module 170, and a processor. 180, and power supply 190 and other components.

It will be understood by those skilled in the art that the mobile phone structure shown in FIG. 1 is only an example of implementation, does not constitute a limitation of a mobile phone, may include more or less components than illustrated, or may combine certain components. , or different parts layout.

The components of the mobile phone 100 will be specifically described below with reference to FIG. 1 :

The RF circuit 110 can be used for transmitting and receiving information or during a call, and receiving and transmitting the signal. Specifically, after receiving the downlink information of the base station, the processor 180 processes the data. In addition, the uplink data is designed to be sent to the base station. Generally, RF circuits include, but are not limited to, an antenna, at least one amplifier, a transceiver, a coupler, an LNA (Low Noise Amplifier), a duplexer, and the like. In addition, RF circuitry 110 can also communicate with the network and other devices via wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to GSM (Global System of Mobile communication), GPRS (General Packet Radio Service), CDMA (Code Division Multiple Access). , Code Division Multiple Access), WCDMA (Wideband Code Division Multiple Access), LTE (Long Term Evolution), e-mail, SMS (Short Messaging Service), and the like.

The memory 120 can be used to store software programs and modules, and the processor 180 executes various functional applications and data processing of the mobile phone 100 by running software programs and modules stored in the memory 120. The memory 120 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may be stored according to The data created by the use of the mobile phone 100 (such as audio data, phone book, etc.) and the like. Moreover, memory 120 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The input unit 130 can be configured to receive input numeric or character information, and to generate a key signal or action signal input related to user settings and function control of the mobile phone 100. Specifically, the input unit 130 may include one or more of the touch panel 131, the camera 132, and other input devices 132. The touch panel 131 can be a touch screen or a touch panel, wherein the touch screen is a device that integrates a display screen and a touch area, and the touch panel is different from the touch screen and does not display a visual output. The touch sensitive area, the touch panel may be a touch sensitive surface separated from the display screen or an extended portion of the touch sensitive surface formed by the touch screen, and the touch panel 131 may collect a touch operation on or near the user (such as a user using a finger, A suitable object or accessory such as a stylus is operated on or near the touch panel 131, and the corresponding connecting device is driven according to a preset program. Optionally, the touch panel 131 may include two parts: a touch detection device and a touch controller. Wherein, the touch detection device detects the touch orientation of the user, and detects a signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts the touch information into contact coordinates, and sends the touch information. The processor 180 is provided and can receive commands from the processor 180 and execute them. In addition, the touch panel 131 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves. The camera 132 may be one or more analog cameras, a digital camera, a depth camera, or an unlimited number of combinations of the foregoing, and the camera 132 may collect video signals and transmit the video signals to the processor 180 to An input signal is acquired by the processor 180 from the video signal (such as identifying a user's gesture operation from the video signal). In addition to the touch panel 131 and the camera 132, the input unit 130 may also include other input devices 133. Specifically, the other input device 133 may include, but is not limited to, one or more of a physical keyboard, a function key (such as a volume control button, a switch button, etc.), a trackball, a mouse, a joystick, a brain wave identifier, a gyroscope, and the like. In addition, the input unit 130 can cover the microphone 162, the sensor 150, and the like. In some embodiments, the microphone 162 can collect the audio signal and transmit the audio signal to the processor to collect the input signal from the audio signal by the processor. (such as identifying the user's voice operation from the audio signal).

The display unit 140 can be used to display information input by the user or information provided to the user and various menus of the mobile phone 100. The display unit 140 may include one or more of the display screen 141, the projection device 142, or other display devices 143. Alternatively, an LCD (Liquid Crystal Display), an OLED (Organic Light-Emitting Diode, organic The display screen 141 is configured in the form of a light emitting diode or the like. Further, the touch panel 131 can cover the display screen 141. When the touch panel 131 detects a touch operation on or near the touch panel 131, the touch panel 131 transmits to the processor 180 to determine the type of the touch event, and then the processor 180 according to the touch event. The type provides a corresponding visual output on display 141. Although in FIG. 1, the touch panel 131 and the display screen 141 function as two separate components to implement the input and output functions of the mobile phone 100, in some embodiments, the touch panel 131 and the display screen 141 may be The input and output functions of the mobile phone 100 are implemented by integration. The projection device 142 may be a pico projector or a 3D holographic projector, wherein the pico projector may be a device mounted on the smart glasses device and projecting an image on the retina of the human eye through a translucent prism for imaging. It can be a device that is imaged by projection on a display screen or display screen of a mobile phone. A 3D (three-dimensional) holographic projector can directly project in a physical space using the principles of interference and diffraction to present a true three-dimensional image of the object. In addition to the display screen 141 and the projection device 142, the display unit 140 may also include other display devices 142. Specifically, the other display device 142 may include, but is not limited to, one of a wireless local area network, a USB data line (Universal Serial Bus), an HDMI (High Definition Multimedia Interface) cable, and the like. One or more display devices (such as televisions, etc.) that are connected to a mobile phone.

Mobile phone 100 may also include at least one type of sensor 150, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display screen 141 according to the brightness of the ambient light, and the proximity sensor may turn off the display screen 141 when the mobile phone 100 moves to the ear. And / or backlight. As a kind of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in all directions (usually three axes). When it is stationary, it can detect the magnitude and direction of gravity. It can be used to identify the posture of the mobile phone (such as horizontal and vertical screen switching). , related games, magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tapping), etc.; as for the mobile phone 100 can also be configured with gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc. The sensor will not be described here.

The audio circuit 160, the speaker 161, and the microphone 162 can provide an audio interface between the user and the mobile phone 100. The audio circuit 160 can transmit the converted electrical data of the received audio data to the speaker 161 for conversion to the sound signal output by the speaker 161; on the other hand, the microphone 162 converts the collected sound signal into an electrical signal by the audio circuit 160. After receiving, it is converted into audio data, which is then processed by the audio data output processor 180, transmitted via the RF circuit 110 to, for example, another mobile phone, or outputted to the memory 120 for further processing.

WiFi is a short-range wireless transmission technology, and the mobile phone 100 can help users to send and receive emails, browse web pages, and access streaming media through the WiFi module 170, which provides wireless broadband Internet access for users. Although FIG. 1 shows the WiFi module 170, it will be understood that it does not belong to the essential configuration of the mobile phone 100 and may be omitted as needed.

The processor 180 is the control center of the mobile telephone 100, connecting various portions of the entire mobile telephone using various interfaces and lines, by running or executing software programs and/or modules stored in the memory 120, and recalling stored in the memory 120. The data, performing various functions and processing data of the mobile phone 100, thereby integrally monitoring the mobile phone. Optionally, the processor 180 may include one or more processing units; preferably, the processor 180 may integrate an application processor and a modem processor, where the application processor mainly processes an operating system, a user interface, an application, and the like. The modem processor primarily handles wireless communications. It can be understood that the above modem processor may not be integrated into the processor 180.

The mobile phone 100 also includes a rechargeable battery 190 that powers various components. Preferably, the rechargeable battery 190 can be logically coupled to the processor 180 via a power management system to manage charging, discharging, and power consumption through a power management system. Management and other functions.

Rechargeable battery 190 can include one or more separate rechargeable battery cells, one or more rechargeable battery cells housed in a housing that is a flexible package, such as an aluminum plastic film or aluminum housing package. The rechargeable rechargeable battery 190 includes an anode and a cathode.

Although not shown, the mobile phone 100 may further include a camera, a Bluetooth module, and the like, and details are not described herein.

2 is an exploded perspective view showing a mobile phone in accordance with an embodiment of the present application. The mobile phone 200 shown in FIG. 2 may be the same mobile phone as the mobile phone 100 described above.

Referring to FIG. 2, the mobile phone 200 may include a front cover 210, a display screen 220, a front case 230, a PCB (Printed Circuit Board) 240, a rechargeable battery 250, and a rear cover 260. The front cover 210 is made of transparent glass or plastic. The front cover 210 and the display screen 220 are stacked on the front cover 230. The front cover 210 is above the display screen 220. The content displayed on the display screen 220 is displayed through the front cover 210. The rechargeable battery 250 has a rear cover 260 under the front case 230, and a PCB 240 and a rechargeable battery 250 are disposed between the front case 230 and the rear cover 260. The front case 230 may include a frame, and the front case 230 may be provided with a support member for supporting the display screen 220, and the other side of the support member may be provided with a receiving space for housing the PCB 240 and the rechargeable battery 250 (not shown) And the rechargeable battery 250 is arranged to avoid the PCB 240. The PCB 240 and the rechargeable battery 250 are arranged in parallel and do not overlap each other in the thickness direction of the mobile phone. The display screen 220 may be fixed to the front cover 210 via an adhesive, and the front cover 210 may be attached to the front case 230 via an adhesive to be fixed. The adhesive member may be of a tape type (such as a double-sided tape) or a liquid adhesive layer (for example, glue).

According to an embodiment of the present application, the mobile phone 202 can be disposed on the upper side of the display area 2010 as viewed from the front. Some components for performing the functions of the mobile phone 200 may be disposed around the earpiece 202, which may include at least one sensor module: for example, a proximity sensor (eg, an optical sensor) or the like. The components can include front camera components. According to an embodiment of the present application, the component may include an indicator light to notify the user of the status information of the mobile phone 200. The lower side of the display area 2010 may be arranged with some electronic components, for example, one or more of the microphone 203, the speaker 204, the earphone socket 207, and the USB interface 208, and the frame on the lower side of the display area has an opening corresponding to the electronic component. According to various embodiments of the present application, various electronic components may also be disposed on a bezel on the left side of the display area 2010 or on a bezel on the right side. For example, on the bezel on the left side of the display area, a socket device 205 for inserting an external device of a card type may be arranged. The socket device 205 can house at least one of an inherent identification (ID) card of the mobile phone (eg, a Subscriber Identity Module (SIM) card or a User Identity Module (UIM)) and a memory card for expanding the storage space. One or more side button buttons may be partially protruded on a frame on the right side of the display area, for example, the side button may include a volume button for effecting execution of a volume up/down function, a scroll function, etc., on/off The buttons can be used to perform power on/off functions, mobile phone wake/sleep functions, and the like.

According to various embodiments of the present application, the rear camera device 211 may be disposed on a cover of the mobile phone 200, and one or more electronic components 212 may be disposed on one side of the rear camera device 211. Electronic component 212 can include at least one of: an illuminance sensor (eg, an optical sensor), a proximity sensor (eg, an optical sensor), an infrared sensor, a flash light, and the like.

According to an embodiment of the present application, the touch panel may also be disposed on a rear surface of the front cover 210 and may receive a touch input signal from the outside.

An opaque layer may be disposed on the rear surface of the front cover 210 to hide the inside of the mobile phone 200. The opaque layer provided on the front cover 210 can be applied to an area excluding the display area.

FIG. 3 is a schematic diagram showing a planar internal structure of a mobile phone according to an embodiment of the present application. The mobile phone 300 shown in FIG. 3 may be the same mobile phone as the mobile phone 200 described above. Wherein, the PCB 340 and the rechargeable battery 350 are disposed in parallel, and the rechargeable battery 350 is placed in the rechargeable battery receiving space 380 formed by the outer casing 330, and the rechargeable battery 350 is locked in the rechargeable battery receiving space 380. Disassembled, the rechargeable battery 350 is affixed in the rechargeable battery accommodating space 380 by a tape, and is not detachable. The outer casing 330 may be a front or a middle frame and may include a bezel. Alternatively, a PCB other than the PCB 340 may be included, arranged in parallel on the left or right side of the rechargeable battery 350, or on the lower side. The embodiment of the present application does not limit this.

4 shows a front view of a mobile phone according to an embodiment of the present application. The mobile phone 400 shown in FIG. 4 may be the same mobile phone as the mobile phone 300 described above, having a display screen 410, a housing 430, and a rechargeable battery. 450, a back cover (not shown), the rechargeable battery 450 is located in the rechargeable battery receiving space of the outer casing 430, and the two or more detecting electrodes 470 are disposed with respect to a central position of the rechargeable battery 450. The detecting electrode 470 is connected to an input of a detector for detecting an inflation condition of the rechargeable battery 450. Detection electrode 470 can also be part of the detector.

5A-5D are portions of the view taken along line B-B of Fig. 4, including a rechargeable battery 450, a casing 430, a rear cover 560, etc., and a partial structure such as the display screen 410 is not shown. In FIGS. 5A-5C, the rechargeable battery 450 is in a normal state, and the rechargeable battery 450 in FIG. 5D is in an inflated state.

In FIG. 5A, the rechargeable battery 450 includes a package 451 and a battery core 452, and the package 451 may be a steel plastic film or an aluminum plastic film, or an aluminum shell or other material containing a conductive component. Usually, the outermost layer of the package 451 is a non-conductive film, the surface of the package 451 is not electrically conductive, and the outermost portion of the partial package 451 has no non-conductive film, so that the surface of the package 451 is electrically conductive. The rechargeable battery 450 is placed in a rechargeable battery receiving space 480 formed by the outer casing 430. The first side 454 of the rechargeable battery 450 is adjacent to the outer casing 430, and the second side 455 is adjacent to the rear cover 560. The detecting electrodes 471 and 472 are located on the back cover 560, and the detecting electrodes 471 and 472 are made of a conductive material. If the back cover 560 is made of a conductive material, the detecting electrode 471 The sum 472 is located inside the back cover 560 and has a non-conductive medium between the back cover 560. The conductor 453 is located on the rechargeable battery 450 and adjacent to the side of the back cover, opposite to the detecting electrodes 471 and 472, and the conductor 453 may be located outside the package 451 or inside the package 451. Referring to FIG. 5B, an electrical conductor 453 is placed inside the package 451 between the package 451 and the battery cell 452. It can be understood that for the surface-conducting package 451, the conductor 453 may not be provided. The detection electrodes 471 and 472 may be provided with a non-conductive film on one side of the rechargeable battery 450 to prevent contact with the conductor 453, and a short circuit may occur. According to the needs of the design of the rechargeable battery bulging detecting circuit, the detecting electrodes 471 and 472 may not be provided with a non-conductive film, and when the rechargeable battery is inflated, the conductor 453 contacts the detecting electrode 471 or 472 to form a short circuit, thereby detecting the rechargeable. The battery swells. The outer sides of the detecting electrodes 471 and 472 may be respectively wrapped with a non-conductive film to prevent a short circuit when the mobile phone enters the water. The detecting electrodes 471 and 472, the conductive sheet 453 can be a planar electrical conductor.

5C is different from FIG. 5A in that the detecting electrodes 471 and 472 are located on the side of the rechargeable battery 450 near the back cover, and the conductor 453 is located inside the back cover 560, opposite to the positions of the detecting electrodes 471 and 472. Alternatively, if the outer surface of the package 451 is non-conductive, the detecting electrodes 471 and 472 may be disposed outside the package 451 or on the inner side of the package 451 (refer to the position of the conductor 453 in FIG. 5B); The outer surface is made of a conductive material, and the detecting electrodes 471 and 472 may be disposed outside the package 451 of the rechargeable battery 450, and a non-conductive medium is disposed between the detecting electrode and the package 451. If the inner surface of the rear cover 560 is electrically conductive, the electrical conductor 453 may not be provided.

In FIGS. 5A-5C, the detecting electrodes 471 and 472 are located on the same side, such as both on the inside of the back cover or on the side of the rechargeable battery near the back cover, so that the input end of the detector is connected to the detecting electrodes 471 and 472. The wiring is simple, and the wiring can be placed on the back cover or on a rechargeable battery.

5D shows that the rechargeable battery 450 of FIG. 5A is in an inflated state, and both the first side 454 and the second side 455 of the rechargeable battery 450 are inflated, thereby causing the electric conductor 453 to approach the detecting electrodes 471 and 472. 5B and 5C, the inflated state of the rechargeable battery 450 refers to FIG. 5D, and the distance between the conductor 453 and the detecting electrode becomes small.

FIG. 6A is a schematic diagram showing the circuit structure of a mobile phone according to an embodiment of the present application. The arrangement of the detecting electrodes and the conductors is exemplified by the structure of the mobile phone in Fig. 5A. In FIG. 6A, the detector 691 can be a capacitance detector, or any detection device that can detect the bulging of the rechargeable battery 450. Processing unit 692 can be a processor or power manager of the mobile phone. The two input terminals of the detector 691 are connected to the detecting electrodes 471 and 472 to detect an electrical physical quantity on the detecting electrode, such as a capacitance on the detecting electrode, or a voltage, or a current. The detector 691 is connected to the processing unit 692, and reports the detection result to the processing unit 692. The processing unit 692 manages the use of the rechargeable battery, such as controlling the operation of the charging circuit 693, according to predetermined conditions. The charging circuit 693 is connected to the rechargeable battery 450, and the rechargeable battery 450 is charged under the control of the processing unit 692. The conductor 453 is not connected to the input of the detector 691. The detector 691 detects the battery inflation state by detecting the electrical physical quantity between the electrode 471 and the detection electrode 472, and the change in the distance between the conductor 453 and the detection electrode 471 and the detection electrode 472 affects the electrical physical quantity.

6B shows a schematic diagram of a connection between a mobile phone and a charger according to an embodiment of the present application. When the processing unit 692 determines that the rechargeable battery is inflated beyond a preset threshold, the charging circuit 693 can control the output of the charger 602. The current or output voltage, or mobile phone 601, communicates with charger 602, negotiating the output current or output voltage of charger 602, and the like.

Capacitive coupling between the detecting electrodes 471 and 472, there is a capacitance C _m ; a capacitive coupling between the detecting electrode 471 and the conductor 453, there is a capacitance C _A ; a capacitive coupling between the detecting electrode 471 and the conductor 453, and a capacitance C _B exists. When the rechargeable battery 450 is normal, C _m, C _A, C _B are fixed values, C _A and C _B are negligible with respect to C _m , and the equivalent capacitance C _AB between the detecting electrodes 471 and 472 is about C _{m .} . When the rechargeable battery 450 is inflated, C _m does not change, and since the distance between the conductor 453 and the detecting electrodes 471 and 472 becomes small, C _A and C _B increase, so that the _CAB changes. The change in the equivalent capacitance _CAB is detected by the capacitance detector to determine the extent to which the rechargeable battery is inflated and close to the detecting electrode.

当可再充电电池发生鼓胀的时候，C_B发生变化，从而V_AB发生变化，根据V_AB的变化可以反映可再充电电池鼓胀后靠近探测电极的程度。FIG. 7A shows a circuit diagram for detecting bulging according to an embodiment of the present application, and FIG. 7B shows an equivalent circuit of the circuit shown in FIG. 7A. 7A and 7B show one way of detecting the alternating voltage between AB to detect the bulging of the rechargeable battery. AC voltage between AB

When the rechargeable battery is inflated, C _B changes, so that V _AB changes, and the change in V _AB can reflect the extent to which the rechargeable battery is inflated and close to the detecting electrode.

f为交流电流源的频率。在该方案中C_s可以在电路中省略掉，省略后

当可再充电电池发生鼓胀的时候，C_A和C_B发生变化，从而V_A发生变化，根据V_A的变化可以反映可再充电电池鼓胀后靠近探测电极的程度。Another method for detecting the bulging of the rechargeable battery can replace the V _AC in FIGS. 7A and 7B with the alternating current source I _AC , and detect the swell of the rechargeable battery by detecting the alternating voltage at point A, as shown in FIG. One input end of the detector 691 is connected to the detecting electrode 471, and the other input end of the detector is connected to the ground, so that the detector 691 detects the AC voltage at the point A as

f is the frequency of the alternating current source. In this scheme, C _s can be omitted from the circuit, after omission

When the rechargeable battery is inflated, C _A and C _B change, so that V _A changes, and the change according to V _A can reflect the extent to which the rechargeable battery is inflated and close to the detecting electrode.

In practical applications, the equivalent capacitance _{CAB of} the detection _AB can be detected by detecting the voltage of the AB, for example, establishing a functional relationship or a mapping relationship between V _AB or V _A and the equivalent capacitance C _AB , for example, Table 1 is an advance The mapping relationship between stored V _AB and C _AB . When the V _{AB is} acquired, the detector or processing unit of the mobile phone can learn C _AB based on the following mapping relationship. Capacitance can be tested in a variety of ways. For example, capacitor charging and discharging can be used to generate different frequencies for measurement.

Table 1

After the processing unit 692 knows the result reported by the detector 691, it can determine the amount of inflation of the rechargeable battery, thereby controlling the charging current. As shown in Table 2, V _AB , C _AB , the relationship between the bulging amount t of the rechargeable battery and the charging current i. According to the method of an embodiment of the present application, after the processing unit 692 receives the V _AB reported by the detector 691, the equivalent capacitance C _AB , the rechargeable battery bulging amount t, and the charging current i are controlled based on the charging current i. The charging circuit 693 supplies a charging current to the rechargeable battery 450. It can be understood that after receiving the V _AB , the processing unit 692 can directly obtain the range of the charging current i according to the mapping relationship. It can be understood that part of the content of Table 2, such as the mapping relationship between V _AB and the bulging amount of the rechargeable battery, can be pre-stored in the mobile phone. When the processing unit obtains the bulging amount t of the rechargeable battery, based on the preset function relationship The charging current i is obtained. It can be understood that the mapping relationship between V _A , C _AB , the rechargeable battery bulging amount t, and the charging current i / charging voltage v / charging amount can also be stored in advance in the mobile phone. There are many variations of the charging circuit based on the electrical physical quantities detected on the AB by those skilled in the art, and details are not described herein.

Table 2

9 shows a flow chart for monitoring the bulging of a rechargeable battery in accordance with an embodiment of the present application. As shown in Figure 9,

In step 801, the bulging condition of the rechargeable battery is monitored.

During the use of the mobile phone, the bulging condition of the rechargeable battery can be monitored in real time, and the above method can be used for detecting, for example, monitoring the equivalent capacitance between the detecting electrodes 471 and 472, the electrical quantity such as voltage and current, based on the detecting electrodes 471 and 472. The detected electrical physical quantity, thereby obtaining a corresponding amount of bulging of the rechargeable battery by a mapping relationship between the physical quantity on the detecting electrode stored in advance and the bulging amount t of the rechargeable battery. It will be appreciated that the electrical physical quantities on the detection electrodes 471 and 472 reflect the bulging of the rechargeable battery, so that it is also possible to monitor only the electrical physical quantities on the detection electrodes, not the amount of bulging of the rechargeable battery.

Alternatively, the mobile phone can also monitor the bulging of the rechargeable battery by comparing the changes in the electrical physical quantities on the detection electrodes. For example, the mobile phone can record the initial equivalent capacitance between the detecting electrodes 471 and 472 when the power is turned on for the first time, and detect the real-time equivalent capacitance between the electrodes 471 and 472 in real time during the normal use of the mobile phone, and calculate the real-time equivalent. The difference between the capacitance and the initial equivalent capacitance to determine the bulging of the rechargeable battery.

At step 802, it is determined whether the swell of the rechargeable battery is within an acceptable range. If it is an acceptable range, step 801 is continued, and if it is not within the acceptable range, step 803 is performed.

The mobile phone can determine whether the rechargeable battery bulge is within an acceptable range based on a preset threshold of the physical quantity. As shown in Table 1, when the mobile phone detects that the voltage V _AB on the detecting electrode reaches 0.4 V, the rechargeable battery is considered to be inflated. It is an acceptable range, and when the voltage V _AB on the detecting electrode does not reach 0.4 V, it is considered that the rechargeable battery bulging is an acceptable range.

At step 803, an operation of controlling the inflation of the rechargeable battery is performed.

The mobile phone performs an operation of controlling the expansion of the rechargeable battery to determine whether the mobile phone is charging. If the mobile phone is charging, the charging property of the rechargeable battery can be controlled, such as stopping charging, and optionally, the prompt information as shown in FIG. 10A can be displayed on the screen; or the charging current can be reduced, such as by fast charging. The mode changes to the normal charging mode; or the charging voltage is reduced. The mobile phone controls the charging properties of the rechargeable battery, which may be an attribute that controls the electrical input of the charging circuit in the mobile phone to the rechargeable battery, such as input current or input voltage or input power, or control the electrical output of the charger. Properties such as the charger's output current or output voltage or output power. If the mobile phone is not charging, the mobile phone can be turned off, or the device or application that consumes a high amount of power during the operation of the mobile phone can be turned off. Alternatively, the prompt message as shown in FIG. 10B can also be displayed on the screen. If the user turns the phone on again after the power is turned off, the mobile phone can detect whether the rechargeable battery is still in an inflated state. If the rechargeable battery does not bulge, the mobile phone is turned on; if the rechargeable battery is still in an inflated state, the prompt The user replaces the rechargeable battery and the mobile phone resumes the shutdown state. Understandably, in addition to displaying prompt information on the screen, it is also possible to emit sound or light signals. Prompt.

Optionally, in step 802, the mobile phone can also record the bulging time of the rechargeable battery, and the number of bulgings, and count the frequency at which the rechargeable battery can swell for a period of time. When the frequency at which the rechargeable battery bulges exceeds a predetermined threshold, the mobile phone prompts the user to replace the rechargeable battery.

Understandably, after performing the operation of controlling the inflation of the rechargeable battery, the mobile phone continues to perform step 802, and the mobile phone can also determine whether the rechargeable battery can be restored to a normal state after being inflated. When the mobile phone determines that the rechargeable battery cannot swell and returns to the normal state, the user may be prompted to replace the rechargeable battery, as shown in FIG. 10C.

Optionally, the above steps 801-803 can be performed only during the charging process of the mobile phone.

11 shows a flow chart of a method of charging a mobile phone in accordance with an embodiment of the present application. As shown in Figure 11,

In step 1001, the charger connection is identified.

The mobile phone can identify the charging interface that the charger is connected to the mobile phone, such as the USB interface, and can be identified by means of an existing identification charger connection.

In step 1002, the bulging of the rechargeable battery is monitored.

The mobile phone can monitor the bulging condition of the rechargeable battery by using the above circuit, and can perform different operations according to the bulging condition of the rechargeable battery, such as steps 1003-1005.

In step 1003, when the rechargeable battery is not inflated, the mobile phone controls the charging current to be a large current, such as charging the rechargeable battery with a current greater than 2A.

In step 1004, when the rechargeable battery is in a slight inflation, the mobile phone is charged with a normal current, such as with a current of less than 2 A (e.g., 500 mA).

At step 1005, the mobile phone stops charging when the rechargeable battery is in serious inflation. It will be appreciated that the mobile phone can display a prompt message on the display as shown in Figure 10A.

At step 1006, it is determined whether the charging is completed. When the charging is completed, step 1007 is performed, and when the charging is not completed, step 1002 is performed.

Step 1007, when the charging is completed, stop detecting the bulging of the rechargeable battery.

In this embodiment, the level of the bulging condition of the rechargeable battery can be preset according to the physical quantity on the detecting electrode, for example, based on the voltage V _AB between the detecting electrodes 471 and 472, the bulging condition of the rechargeable battery is classified, for example, When V _{AB is} less than the first threshold, determining that the rechargeable battery is in a non-inflated state, when V _{AB is} greater than or equal to the first threshold and less than a second threshold, determining that the rechargeable battery is in a slightly inflated state, when V _AB Greater than the second threshold, determining that the rechargeable battery is in a severely inflated state, wherein the first threshold is less than a second threshold. Alternatively, the rechargeable battery bulging condition may also be graded based on the equivalent capacitance C _AB on the detecting electrodes 471 and 472 or the rechargeable battery bulging amount t.

The detecting electrodes 471 and 472 in the above embodiment may be two square electrodes as shown in FIG. 12A, or may be two electrodes of FIG. 12B. Alternatively, the detecting electrodes may also be in the form of an array as shown in FIG. 12C, and may have A11-A1n, A11-Am1, B11-B1n, B11-Bm1, and 2*n*m electrodes in total. In addition to detecting whether the rechargeable battery is inflated or detecting the position where the rechargeable battery is inflated. The detecting electrode shown in Fig. 12C can be disposed inside the back cover or on the side of the rechargeable battery near the back cover. When the rechargeable battery is inflated, the distance between the bulging point and the back cover is different from the distance from the back cover where there is no bulging on the rechargeable battery, and the capacitance value formed on the detecting electrode is different, thereby detecting The position where the bulging occurs.

Each of the above-described elements of the terminal according to various embodiments of the present application may be constituted by one or more components, the component name may be changed according to the type of the terminal, and the terminal may include at least one of the above-described elements. The element can be omitted Some of the components may also include additional components. Further, some of the elements of the terminal may be combined and constructed as one entity to equally perform the functions of the corresponding elements before combining.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present invention are generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.). The computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media. The usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).

Claims (15)

A terminal comprising: a housing, the housing including a rear cover of the terminal; a rechargeable battery disposed in a receiving space of the rechargeable battery in the housing, the rechargeable battery including a first surface and a second surface, the first surface being adjacent to a back cover of the terminal; a first electrode and a second electrode, the first electrode and the second electrode being located inside the back cover of the terminal; a conductive sheet on the first surface of the rechargeable battery, the conductive sheet being opposite to the first electrode and the second electrode; a detector having an input end connected to the first electrode and the second electrode for detecting an inflation state of the rechargeable battery; And a processing unit connected to the output of the detector for controlling a power input to the rechargeable battery based on an inflation state of the rechargeable battery. The terminal of claim 1 wherein the outer surface of the package of rechargeable battery is made of a conductive material that is part of the outer surface of the package of the rechargeable battery. A terminal comprising: a housing, the housing including a rear cover of the terminal; a rechargeable battery disposed in a receiving space of the rechargeable battery in the housing, the rechargeable battery including a first surface and a second surface, the first surface being adjacent to a back cover of the terminal; a first electrode and a second electrode, the first electrode and the second electrode being located on a first surface of the rechargeable battery; a conductive sheet located inside the back cover of the terminal, the conductive sheet being opposite to the first electrode and the second electrode; a detector having an input end connected to the first electrode and the second electrode for detecting an inflation state of the rechargeable battery, And a processing unit connected to the output of the detector for controlling a power input to the rechargeable battery based on an inflation state of the rechargeable battery. The terminal according to claim 3, wherein an inner surface of said back cover is electrically conductive, and said conductive sheet is a part of said back cover. The terminal according to any one of claims 1 to 4, wherein the first electrode, the second electrode, and the outer surface of the conductive sheet have a film of a non-conductive medium. A terminal according to any one of claims 1 to 5, wherein the detector is a capacitance detector or a voltage detector or a current detector. The terminal according to any one of claims 1 to 6, wherein the conductive sheet is grounded, the first electrode is connected to an alternating voltage source, and the second electrode is connected in series with a reference capacitor. The terminal according to any one of claims 1 to 7, wherein said detector detects a battery inflation state by detecting an electrical physical quantity between said first electrode and said second electrode, said conductive sheet and said A change in the distance between the first electrode and the second electrode causes the electrical physical quantity to change. A terminal according to any of claims 1-8, wherein said conductive strip is not connected to the input of said detector. The terminal according to any one of claims 1 to 9, wherein the processing unit is configured to control a charging current or a charging amount or a charging voltage of the rechargeable battery based on an inflation state of the rechargeable battery. . The terminal according to any one of claims 1 to 10, wherein the processing unit is configured to switch a rechargeable battery charging mode based on an inflation state of the rechargeable battery, the rechargeable battery charging mode including High current charging mode, normal charging mode and stop charging mode. A rechargeable battery disposed in a receiving space of a rechargeable battery of the terminal, comprising: Rechargeable battery module, a first electrode and a second electrode, the first electrode and the second electrode being located on one surface of the rechargeable battery module, The first electrode and the second electrode are opposite to a position of the conductive sheet on the terminal; a detector having an input connected to the first electrode and the second detection for detecting an inflation state of the rechargeable battery; An output end of the detector is electrically connected to a processing unit of the terminal, and sends an inflated state of the rechargeable battery to the processing unit, so that the processing unit controls according to an inflation state of the rechargeable battery Electrical input to the rechargeable battery module. A rechargeable battery according to claim 12, wherein said first electrode, said second electrode, and a film having a non-conductive medium. A rechargeable battery according to claim 12 or 13, wherein said detector is a capacitance detector or a voltage detector or a current detector The rechargeable battery according to any one of claims 12 to 14, wherein the first electrode is connected to an alternating voltage source, and the second electrode is connected in series with a reference capacitor.

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