Battery charging and discharging circuit, charging method and device, and electronic equipment

Abstract

The present disclosure relates to a battery charging and discharging circuit, a charging method and device, and an electronic device. The battery charging and discharging circuit comprises a battery cell, a charging and discharging circuit, a voltage detection circuit, and a circuit protection module. The charging and discharging circuit comprises a first positive electrode, a first negative electrode, and the circuit protection module. The first positive electrode is connected to a positive electrode of the battery cell, and the first negative electrode is connected to a negative electrode of the battery cell. The circuit protection module is connected between the first positive electrode and the positive electrode of the battery cell, and between the first negative electrode and the negative electrode of the battery cell. The voltage detection circuit comprises a second positive electrode, a second negative electrode, a first protection circuit, and a second protection circuit. The first protection circuit is connected in series between the second positive electrode and the positive electrode of the battery cell, and the second protection circuit is connected in series between the second negative electrode and the negative electrode of the battery cell. The voltage detection circuit detects a voltage of the battery cell. The first protection circuit and the second protection circuit are switched to an open state when the voltage detection circuit is abnormal.

Description

Technical Field

[0001] The present disclosure relates to the field of terminal technology, and in particular to a battery charging and discharging circuit, a charging method and device, and an electronic device. Background Art

[0002] Currently, as the functions configured in mobile phone terminals become increasingly powerful, in order to meet the various functions of mobile phone terminals and at the same time maintain a certain battery life, there is an urgent need to configure mobile phone terminals with large-capacity batteries. However, large-capacity batteries will bring the disadvantage of long charging time, so how to improve charging efficiency has become a technical problem that needs to be solved urgently in this field. Summary of the Invention

[0003] The present disclosure provides a battery charging and discharging circuit, a charging method and device, and an electronic device to address deficiencies in related technologies.

[0004] According to a first aspect of an embodiment of the present disclosure, a battery charging and discharging circuit is provided, comprising:

[0005] battery cells;

[0006] A charge-discharge circuit, the charge-discharge circuit comprising a first positive terminal, a first negative terminal, and a circuit protection module, wherein the first positive terminal is connected to the positive electrode of the battery cell, the first negative terminal is connected to the negative electrode of the battery cell, and the circuit protection module is connected between the first positive terminal and the positive electrode of the battery cell, and between the first negative terminal and the negative electrode of the battery cell;

[0007] A voltage detection circuit, the voltage detection circuit includes a second positive terminal, a second negative terminal, a first protection circuit and a second protection circuit, the first protection circuit is connected in series between the second positive terminal and the positive pole of the battery cell, and the second protection circuit is connected in series between the second negative terminal and the negative pole of the battery cell, the voltage detection circuit detects the voltage of the battery cell, and the first protection circuit and the second protection circuit are used to switch to a disconnected state when the voltage detection circuit is abnormal.

[0008] Optionally, the first protection circuit includes a first fuse, and the second protection circuit includes a second fuse.

[0009] Optionally, the voltage detection circuit further includes a first resistor and a second resistor, wherein the first resistor is connected in series between the second positive terminal and the positive electrode of the battery cell, and the second resistor is connected in series between the second negative terminal and the negative electrode of the battery cell.

[0010] Optionally, the circuit protection module includes a protection chip and a field effect transistor connected to the protection chip, the field effect transistor is connected in series between the first negative terminal and the negative electrode of the battery cell, and the protection chip controls the switching state of the field effect transistor to open or close the charge and discharge circuit.

[0011] Optionally, the voltage detection circuit further includes a first capacitor, one end of which is connected between the second positive terminal and the positive electrode of the battery cell, and the other end of which is grounded.

[0012] Optionally, the voltage detection circuit further includes a second capacitor, one end of the second capacitor is connected between the second negative terminal and the negative electrode of the battery cell, and the other end is grounded.

[0013] According to a second aspect of the embodiments of the present disclosure, an electronic device is provided, comprising the battery charging and discharging circuit as described in any one of the above embodiments.

[0014] According to a third aspect of an embodiment of the present disclosure, a charging method is provided, which is applied to the battery charging and discharging circuit as described in any one of the above embodiments. The charging method includes:

[0015] Obtaining the voltage of the battery cell detected by a voltage detection circuit;

[0016] The charging current of the charge-discharge circuit is adjusted according to the detected voltage of the battery cell.

[0017] Optionally, the first protection circuit includes a first circuit switch, and the second protection circuit includes a second circuit switch; and the charging method further includes:

[0018] obtaining a first current flowing through the first circuit switch and a second current flowing through the second circuit switch;

[0019] When the first current and / or the second current is within the corresponding current setting range, the first circuit switch and / or the second circuit switch is controlled to switch to an off state.

[0020] According to a fourth aspect of the embodiments of the present disclosure, a charging device is provided, which is applied to the battery charging and discharging circuit as described in any one of the above embodiments, and the charging device includes:

[0021] A first acquisition module acquires the voltage of the battery cell detected by a voltage detection circuit;

[0022] The regulating module regulates the charging current of the charge-discharge circuit according to the detected voltage of the battery cell.

[0023] Optionally, the first protection circuit includes a first circuit switch, and the second protection circuit includes a second circuit switch; and the charging device further includes:

[0024] a second acquisition module, configured to acquire a first current flowing through the first circuit switch and a second current flowing through the second circuit switch;

[0025] The control module controls the first circuit switch and / or the second circuit switch to switch to an off state when the first current and / or the second current are within a corresponding current setting range.

[0026] According to a fifth aspect of the embodiments of the present disclosure, a computer-readable storage medium is provided, on which computer instructions are stored. When the instructions are executed by a processor, the steps of the method described in any one of the above embodiments are implemented.

[0027] According to a sixth aspect of the embodiments of the present disclosure, there is provided an electronic device, including:

[0028] processor;

[0029] a memory for storing processor-executable instructions;

[0030] The processor is configured to implement the steps of the method described in any one of the above embodiments when executing.

[0031] The technical solutions provided by the embodiments of the present disclosure may have the following beneficial effects:

[0032] It can be seen from the above embodiments that, in the present disclosure, on the one hand, the voltage detection circuit can be used to detect the voltage of the battery cell, and then the charging current of the battery cell can be adjusted according to the voltage of the battery cell, and the voltage difference caused by the circuit protection module can be eliminated, which is conducive to extending the constant current charging time and thus improving the charging efficiency; on the other hand, the first protection circuit and the second protection circuit can be switched to the disconnected state when the voltage detection circuit is abnormal, the voltage detection circuit is disconnected, and the voltage cannot be continued to be detected, thereby disconnecting the charging process of the battery cell, protecting the battery cell when the charging detection circuit is abnormal, and improving the safety of the battery cell.

[0033] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0035] Figure 1 It is a schematic diagram of a battery charging and discharging circuit in the related art.

[0036] Figure 2 1 is a schematic structural diagram of a battery charging and discharging circuit according to an exemplary embodiment of the present disclosure.

[0037] Figure 3 1 is a circuit diagram of a battery charging and discharging circuit according to an exemplary embodiment of the present disclosure.

[0038] Figure 4 1 is a circuit diagram of another battery charging and discharging circuit according to an exemplary embodiment of the present disclosure.

[0039] Figure 5 1 is a circuit diagram of another battery charging and discharging circuit according to an exemplary embodiment of the present disclosure.

[0040] Figure 6 The figure is a flow chart showing a charging method according to an exemplary embodiment.

[0041] Figure 7 The figure is a block diagram of a charging device according to an exemplary embodiment.

[0042] Figure 8 is a block diagram of another charging device according to an exemplary embodiment.

[0043] Figure 9 The figure is a block diagram of a charging device according to an exemplary embodiment. DETAILED DESCRIPTION

[0044] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0045] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0046] It should be understood that although the terms first, second, third, etc. may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining."

[0047] Figure 1 This is a schematic diagram of a battery circuit in the related art. Figure 1 As shown, in this related art, taking a lithium battery as an example, the battery circuit includes a battery cell 101 and a battery cell protection circuit 102, and the battery cell protection circuit 102 is electrically connected to the battery cell 101. During the charging and discharging process of the lithium battery, the charging current and the discharging current generally need to be output through the battery cell protection circuit 102, so that when abnormal conditions such as overcharging, overcurrent or overdischarging occur, the battery cell 101 is protected by the protection function of the battery cell protection circuit 102.

[0048] When charging the battery cell 101, four charging states can generally be included, specifically including a trickle charging stage, a constant current charging stage, a constant voltage charging stage, and a termination stage. In the trickle charging stage, the voltage across the positive electrode of the battery cell 101 and the battery cell protection circuit 102 can be detected. After the voltage rises to a certain threshold, it is switched to the constant current charging stage. In the constant current charging stage, the lithium battery can be charged with a constant current, and the voltage across the positive electrode of the battery cell 101 and the battery cell protection circuit 102 is continuously detected. When the voltage rises to a certain threshold, it is switched to the constant voltage charging stage, and finally the charging is terminated. Among them, the constant current charging stage is the most efficient stage in the charging process, so extending the duration of the constant current charging stage is of great significance for improving the charging efficiency of the lithium battery.

[0049] In the related art, the charging process is regulated according to the voltage across the battery structure consisting of the battery cell 101 and the battery cell protection circuit 102. However, it is understandable that the primary protection device, secondary protection device, and circuit included in the battery cell protection circuit 102 inevitably have a certain impedance. Therefore, there is a voltage difference between the voltage across the battery structure in the related art and the voltage of the battery cell 101. That is, the voltage detected in the related art is higher than the actual cell voltage of the battery cell 101, which will terminate the constant current charging phase prematurely during the charging process, resulting in a shortened constant current charging phase and affecting charging efficiency.

[0050] Therefore, the present disclosure provides a Figure 2 、 Figure 3 The battery charging and discharging circuit 100 shown in FIG. Figure 1 、 Figure 2As shown, the battery charge and discharge circuit 100 may include a battery cell 1, a charge and discharge circuit 2 and a voltage detection circuit 3. The charge and discharge circuit 2 may include a first positive terminal 21, a first negative terminal 22 and a circuit protection module 23. The first positive terminal 21 may be connected to the positive pole of the battery cell 1, and the first negative terminal 22 may be connected to the negative pole of the battery cell 1. The circuit protection module 23 may be connected between the first positive terminal 21 and the positive pole of the battery cell 1, and between the first negative terminal 22 and the negative pole of the battery cell 1. The circuit protection module 23 may include a primary protection circuit, a secondary protection circuit and a number of capacitors and resistors. During the process of charging or discharging the battery cell 1 at the first positive terminal 21 and the first negative terminal 22, the circuit protection module 23 is used to perform circuit protection to avoid damage to the battery cell 1 in the event of overcharging, overdischarging, overcurrent or short circuit.

[0051] The voltage detection circuit 3 may include a second positive terminal 31, a second negative terminal 32, a first protection circuit 33 and a second protection circuit 34. The second positive terminal 31 is connected to the positive pole of the battery cell 1, and the second negative terminal 32 is connected to the negative pole of the battery cell 1. The first protection circuit 33 is connected in series between the second positive terminal 31 and the positive pole of the battery cell 1, and the second protection circuit 34 is connected in series between the second negative terminal 34 and the negative pole of the battery cell 34. The voltage detection circuit 3 can be used to detect the voltage of the battery cell 1, and then the charging current of the battery cell 1 can be adjusted according to the voltage of the battery cell 1 detected by the voltage detection circuit 3. The voltage difference caused by the circuit protection module 23 can be eliminated, which is conducive to extending the constant current charging time and thus improving the charging efficiency.

[0052] On the other hand, the first protection circuit 33 and the second protection circuit 34 can be switched to the disconnected state when the voltage detection circuit 3 is abnormal. The voltage detection circuit 3 is disconnected and cannot continue to detect the voltage, thereby cutting off the charging process of the battery cell 1 and protecting the battery cell 1. Specifically, the abnormal state of the voltage detection circuit 3 may include the following three situations: First, the second positive terminal 31 and the second negative terminal 32 are in contact and short-circuited. At this time, at least one of the first protection circuit 33 and the second protection circuit 34 can be switched to the disconnected state to disconnect the voltage detection circuit 3, cut off the charging or discharging process, and protect the battery cell 1; second, the second positive terminal 31 is in contact and short-circuited with the first negative terminal 22. At this time, the first protection circuit 33 can be switched to the disconnected state to disconnect the voltage detection circuit 3, cut off the charging or discharging process, and protect the battery cell 1; third, the second negative terminal 32 is in contact and short-circuited with the first positive terminal 21. At this time, the second protection circuit 34 can be switched to the disconnected state to disconnect the voltage detection circuit 3, cut off the charging or discharging process, and protect the battery cell 1.

[0053] Among them, such as Figure 4As shown, the first protection circuit 33 may include a first fuse, the second protection circuit 34 may include a second fuse, and the voltage detection circuit 3 may further include a first resistor 35 and a second resistor 36. The first resistor 35 may be connected in series between the second positive terminal 31 and the positive electrode of the battery cell 1, for example Figure 3 In the embodiment, the first resistor 35 is connected in series between the first fuse and the positive electrode of the battery cell 1; the second resistor 36 can be connected in series between the second negative terminal 32 and the negative electrode of the battery cell 1, for example Figure 3 In the embodiment of FIG. 3 , the second resistor 36 is connected in series between the second fuse and the negative electrode of the battery cell 1 .

[0054] Assume that the resistance of the first resistor 35 is R1, the resistance of the second resistor 36 is R2, the resistance of the first fuse is R3, the resistance of the second fuse is R4, and the internal resistance of the circuit protection module 23 is R5. Then, when the second positive terminal 31 and the second negative terminal 32 are in short circuit contact, the short-circuit current I1=(V 电芯 ) / (R1+R2+R3+R4); When the second positive terminal 31 contacts the first negative terminal 22 and short-circuits, the short-circuit current I2=(V 电芯 ) / (R1+R3+R5) The second negative terminal 32 contacts the first positive terminal 21 and short-circuits, and the short-circuit current I3=(V 电芯 ) / (R2+R4+R5), thereby, the resistance values ​​of the first resistor 35 and the second resistor 36 can be designed according to the melting characteristics of the first fuse and the second fuse, so that the first fuse and the second fuse are melted after the short-circuit current I1 flows through the time length T1, disconnecting the voltage detection circuit 3, and cannot charge the battery cell 1, thereby protecting the battery cell 1; the first fuse is melted after the short-circuit current I2 flows through the time length T2, disconnecting the voltage detection circuit 3, and cannot charge the battery cell 1, thereby protecting the battery cell 1; the second fuse is melted after the short-circuit current I3 flows through the time length T3, disconnecting the voltage detection circuit 3, and cannot charge the battery cell 1, thereby protecting the battery cell 1.

[0055] Of course, in other embodiments, the first resistor 35 may be connected in series between the first fuse and the second positive terminal 31 , and the second resistor 36 may be connected in series between the second fuse and the second negative terminal 32 , which is not limited in the present disclosure.

[0056] In some other embodiments, the first protection circuit 33 may include a first circuit switch, and the second protection circuit 34 may include a second circuit switch. The current ranges flowing through the first and second circuit switches when the voltage detection circuit 3 is in the three abnormal states described above can be pre-set through testing. Subsequently, the first and second switch circuits can be controlled to switch to a disconnected state based on the current values ​​flowing through the first and second switch circuits to protect the battery cells. Compared to the technical solution of providing a first and second fuse, subsequent maintenance of the battery charge and discharge circuit 100 only requires separating the short-circuited electrodes, eliminating the need to repair the internal circuit of the voltage detection circuit 3. Compared to the technical solution of providing a first and second switch circuit, the technical solution of using a first and second fuse eliminates the need to detect the current in the voltage detection circuit 3, which helps simplify the circuit structure of the voltage detection circuit 3.

[0057] In the above embodiment, the circuit protection module 23 may include a protection chip 231 and one or more field effect transistors 232 electrically connected to the protection chip 231. The one or more field effect transistors 232 may be connected in series between the first negative terminal 22 and the negative electrode of the battery cell 1. The protection chip 231 may control the switching state of the field effect transistor 232 according to the charging status of the battery cell 1, thereby opening or closing the charge and discharge circuit. For example, when the battery cell 1 is in a state of charging overvoltage or discharging overvoltage or charging overcurrent or discharging overcurrent, the field effect transistor is controlled to be disconnected to protect the battery cell 1. When the battery cell 1 is in a normal charging or discharging stage, the field effect transistor is disconnected to ensure a normal charging and discharging process.

[0058] like Figure 5 As shown, the voltage detection circuit 3 may further include a first capacitor 37 and a second capacitor 38, one end of the first capacitor 37 is connected between the second positive terminal 31 and the positive electrode of the battery cell 1, and the other end is grounded, for example Figure 4 In the embodiment shown, one end of the first capacitor 37 is connected between the first fuse and the second positive terminal 31; one end of the second capacitor 38 is connected between the second negative terminal 32 and the negative electrode of the battery cell 1, and the other end is grounded, for example Figure 4In the illustrated embodiment, the second capacitor 38 is connected between the second fuse and the second negative terminal 32. Based on this, the voltage detection circuit 3 can be protected from electrostatic discharge by the first capacitor 37 and the second capacitor 38. It should be noted that one end of the first capacitor 37 can also be connected between the first fuse and the first resistor 33, or between the second positive terminal 31 and the positive terminal of the battery cell 1; one end of the second capacitor 38 can also be connected between the second fuse and the second resistor 33, or between the second negative terminal 32 and the negative terminal of the battery cell 1. Where one end of the first capacitor 37 and the second capacitor 38 is grounded, it can be understood that the first capacitor 37 and the second capacitor 38 are connected to the ground, or it can also be that one end of the first capacitor 37 and the second capacitor 38 is connected to a low potential. For example, the first negative terminal 22 is connected to the negative electrode of the battery cell 1, whose potential is relatively low, so the other ends of the first capacitor 37 and the second capacitor 38 can also be connected between the first negative terminal 22 and the negative electrode of the battery cell 1 to provide electrostatic discharge protection for the voltage detection circuit 3. It should be noted that, in other embodiments, the voltage detection circuit 3 may also include the first capacitor 37 or the second capacitor 38 , which is not limited in the present disclosure.

[0059] Based on the battery charging and discharging circuits described in the above embodiments, the present disclosure further provides an electronic device, which may include the battery circuit described in any of the above embodiments. The electronic device may include a mobile phone terminal or a tablet terminal, etc., which is not limited by the present disclosure.

[0060] The present disclosure also provides a charging method, which is applied to the battery charging and discharging circuit described in any one of the above embodiments. Figure 6 As shown, the charging method may include the following steps:

[0061] In step 601, the voltage of the battery cell detected by the voltage detection circuit is obtained.

[0062] In step 602, the charging current of the charge-discharge circuit is adjusted according to the detected voltage of the battery cell.

[0063] In this embodiment, the charging current of the charge-discharge circuit can be adjusted according to the voltage detected by the voltage detection circuit, thereby controlling the charging process of the battery cell 1 and avoiding the voltage difference caused by the circuit protection module 23, which is beneficial to extending the constant current charging time and improving the charging efficiency.

[0064] In another embodiment, the first protection circuit of the voltage detection circuit 3 may include a first circuit switch, and the second protection circuit may include a second protection switch, so that the current flowing through the first circuit switch and the second circuit switch can be obtained. When the current flowing through the first circuit switch and the current flowing through the second switch circuit are both in the first current setting range, it can be determined that the second positive terminal 31 and the second negative terminal 32 are in contact and short-circuited, thereby disconnecting the first circuit switch and the second circuit switch, and then disconnecting the voltage detection circuit 3 to protect the battery cell 1; or when the current flowing through the first circuit switch is in the second current setting range, it can be determined that the second positive terminal 31 and the first negative terminal 22 are in contact and short-circuited, thereby disconnecting the first circuit switch, and then disconnecting the voltage detection circuit 3 to protect the battery cell 1; or when the current flowing through the second circuit switch is in the third current setting range, it can be determined that the second negative terminal 32 and the first positive terminal 21 are in contact and short-circuited, thereby disconnecting the second circuit switch, and then disconnecting the voltage detection circuit 3 to protect the battery cell 1. The first current setting range, the second current setting range and the third setting range can be pre-stored after being determined by experiments, and are related to the resistance values ​​of the first resistor 35 , the second resistor 36 and the first circuit switch and the second circuit switch.

[0065] Corresponding to the aforementioned embodiment of the charging method, the present disclosure also provides an embodiment of a charging device.

[0066] Figure 7 FIG1 is a block diagram of a charging device according to an exemplary embodiment. The charging device can be applied to the battery charging and discharging circuit shown in any of the above embodiments. Figure 7 The device includes a first acquisition module 701 and an adjustment module 702, wherein:

[0067] A first acquisition module 701 acquires the voltage of the battery cell detected by a voltage detection circuit;

[0068] The regulating module 702 regulates the charging current of the charge-discharge circuit according to the detected voltage of the battery cell.

[0069] like Figure 8 As shown, Figure 8 is a block diagram of another charging device according to an exemplary embodiment. Figure 7 Based on the illustrated embodiment, the first protection circuit includes a first circuit switch, and the second protection circuit includes a second circuit switch; the charging device further includes a second acquisition module 703 and a control module 704, wherein:

[0070] A second acquisition module 703 acquires a first current flowing through the first circuit switch and a second current flowing through the second circuit switch;

[0071] The control module 704 controls the first circuit switch and / or the second circuit switch to switch to an off state when the first current and / or the second current are within a corresponding current setting range.

[0072] Regarding the apparatus in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0073] For the device embodiments, since they basically correspond to the method embodiments, the relevant parts can be referred to the partial description of the method embodiments. The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the disclosed solution. A person of ordinary skill in the art can understand and implement it without paying any creative work.

[0074] Accordingly, the present disclosure also provides a charging device, comprising: a processor; a memory for storing instructions executable by the processor; wherein the processor is configured to: obtain the voltage of the battery cell detected by the voltage detection circuit; and adjust the charging current of the charge and discharge circuit according to the detected voltage of the battery cell.

[0075] Accordingly, the present disclosure also provides a terminal, which includes a memory and one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by one or more processors, and the one or more programs include instructions for performing the following operations: obtaining the voltage of the battery cell detected by the voltage detection circuit; and adjusting the charging current of the charge and discharge circuit according to the detected voltage of the battery cell.

[0076] Figure 9 1 is a block diagram illustrating a charging device 900 according to an exemplary embodiment. For example, the device 900 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0077] Reference Figure 9 , the device 900 may include one or more of the following components: a processing component 902 , a memory 904 , a power component 906 , a multimedia component 908 , an audio component 910 , an input / output (I / O) interface 912 , a sensor component 914 , and a communication component 916 .

[0078] The processing component 902 generally controls the overall operation of the device 900, such as operations associated with display, phone calls, data communications, camera operation, and recording operations. The processing component 902 may include one or more processors 920 to execute instructions to perform all or part of the steps of the above-described method. In addition, the processing component 902 may include one or more modules to facilitate interaction between the processing component 902 and other components. For example, the processing component 902 may include a multimedia module to facilitate interaction between the multimedia component 908 and the processing component 902.

[0079] The memory 904 is configured to store various types of data to support the operations of the device 900. Examples of such data include instructions for any application or method operating on the device 900, contact data, phone book data, messages, pictures, videos, etc. The memory 904 can be implemented by any type of volatile or non-volatile storage device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk.

[0080] The power supply component 906 provides power to the various components of the device 900. The power supply component 906 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the device 900.

[0081] The multimedia component 908 includes a screen that provides an output interface between the device 900 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen can be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, slides, and gestures on the touch panel. The touch sensor can not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 908 includes a front camera and / or a rear camera. When the device 900 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.

[0082] The audio component 910 is configured to output and / or input audio signals. For example, the audio component 910 includes a microphone (MIC), which is configured to receive external audio signals when the device 900 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in the memory 904 or transmitted via the communication component 916. In some embodiments, the audio component 910 also includes a speaker for outputting audio signals.

[0083] I / O interface 912 provides an interface between processing component 902 and peripheral interface modules, such as a keyboard, click wheel, buttons, etc. These buttons may include but are not limited to: a home button, volume buttons, a start button, and a lock button.

[0084] The sensor assembly 914 includes one or more sensors for providing various aspects of the status assessment of the device 900. For example, the sensor assembly 914 can detect the open / closed state of the device 900, the relative positioning of components, such as the display and keypad of the device 900. The sensor assembly 914 can also detect changes in the position of the device 900 or a component of the device 900, the presence or absence of user contact with the device 900, the orientation or acceleration / deceleration of the device 900, and temperature changes of the device 900. The sensor assembly 914 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 914 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 914 may also include an accelerometer, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0085] The communication component 916 is configured to facilitate wired or wireless communication between the device 900 and other devices. The device 900 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, 4G LTE, 5G NR or a combination thereof. In an exemplary embodiment, the communication component 916 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 916 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0086] In an exemplary embodiment, the apparatus 900 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the above-described method.

[0087] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 904 including instructions, and the instructions can be executed by the processor 920 of the apparatus 900 to perform the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0088] Other embodiments of the present disclosure will readily occur to those skilled in the art after considering the specification and practicing the disclosure herein. This disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the following claims.

[0089] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A battery charging and discharging circuit, characterized in that: include: battery cells; a charge-discharge circuit, the charge-discharge circuit comprising a first positive terminal, a first negative terminal, and a circuit protection module, the first positive terminal being connected to the positive electrode of the battery cell, the first negative terminal being connected to the negative electrode of the battery cell, the circuit protection module being connected between the first positive terminal and the positive electrode of the battery cell, and between the first negative terminal and the negative electrode of the battery cell; and a voltage detection circuit, the voltage detection circuit comprising a second positive terminal, a second negative terminal, a first protection circuit, and a second protection circuit, the first protection circuit being connected in series between the second positive terminal and the positive electrode of the battery cell, and the second protection circuit being connected in series between the second negative terminal and the negative electrode of the battery cell, the voltage detection circuit detecting the voltage of the battery cell, the first protection circuit and the second protection circuit being switched to a disconnected state when the voltage detection circuit is abnormal; The voltage detection circuit also includes a first resistor connected in series with the first protection circuit and a second resistor connected in series with the second protection circuit. The resistance value of the first resistor is set in association with the resistance value of the first protection circuit to delay the first protection circuit from switching to the off state, and the resistance value of the second resistor is set in association with the resistance value of the second protection circuit to delay the second protection circuit from switching to the off state.

2. The battery charging and discharging circuit according to claim 1, characterized in that: The first protection circuit includes a first fuse, and the second protection circuit includes a second fuse.

3. The battery charging and discharging circuit according to claim 1, characterized in that: The first resistor is connected in series between the second positive terminal and the positive electrode of the battery cell, and the second resistor is connected in series between the second negative terminal and the negative electrode of the battery cell.

4. The battery charging and discharging circuit according to claim 1, characterized in that: The circuit protection module includes a protection chip and a field effect transistor connected to the protection chip. The field effect transistor is connected in series between the first negative terminal and the negative electrode of the battery cell. The protection chip controls the switching state of the field effect transistor to open or close the charge and discharge circuit.

5. The battery charging and discharging circuit according to claim 1, characterized in that: The voltage detection circuit further includes a first capacitor, one end of which is connected between the second positive terminal and the positive electrode of the battery cell, and the other end of which is grounded.

6. The battery charging and discharging circuit according to claim 1, characterized in that: The voltage detection circuit further includes a second capacitor, one end of which is connected between the second negative terminal and the negative electrode of the battery cell, and the other end of which is grounded.

7. An electronic device, characterized in that: The battery charging and discharging circuit comprises the battery charging and discharging circuit according to any one of claims 1 to 6.

8. A charging method, characterized in that: Applied to the battery charging and discharging circuit according to any one of claims 1 to 6, the charging method comprising: Obtaining the voltage of the battery cell detected by a voltage detection circuit; The charging current of the charge-discharge circuit is adjusted according to the detected voltage of the battery cell.

9. The charging method according to claim 8, characterized in that: The first protection circuit includes a first circuit switch, and the second protection circuit includes a second circuit switch; the charging method further includes: obtaining a first current flowing through the first circuit switch and a second current flowing through the second circuit switch; When the first current and / or the second current is within the corresponding current setting range, the first circuit switch and / or the second circuit switch is controlled to switch to an off state.

10. A charging device, characterized in that: Applicable to the battery charging and discharging circuit according to any one of claims 1 to 6, the charging device comprising: A first acquisition module acquires the voltage of the battery cell detected by a voltage detection circuit; The regulating module regulates the charging current of the charge-discharge circuit according to the detected voltage of the battery cell.

11. The charging device according to claim 10, characterized in that: The first protection circuit includes a first circuit switch, and the second protection circuit includes a second circuit switch; the charging device further includes: a second acquisition module, configured to acquire a first current flowing through the first circuit switch and a second current flowing through the second circuit switch; The control module controls the first circuit switch and / or the second circuit switch to switch to an off state when the first current and / or the second current are within a corresponding current setting range.

12. A computer-readable storage medium having computer instructions stored thereon, characterized in that: When the instruction is executed by a processor, the steps of the method according to claim 8 or 9 are implemented.

13. An electronic device, characterized in that: include: processor; a memory for storing processor-executable instructions; The processor is configured to implement the steps of the method according to claim 8 or 9 when executing.

Images