Battery protection circuit, battery components and terminals

Abstract

The present disclosure is about a technical solution for a battery protection circuit, a battery assembly and a terminal. The battery protection circuit in the embodiment of the present disclosure is connected to the battery, including: a charge and discharge interface for connecting to an external load circuit; an encryption component, including a resistance detection terminal and a resistance component, the resistance component is connected between the charge and discharge interface and the resistance detection terminal, wherein the resistance detection terminal is used for an external detection circuit to detect the resistance value of the resistance component, so as to determine the legitimacy of the battery according to the resistance value; the resistance value of the resistance component in the state of the battery being discharged is a first resistance value; the resistance value of the resistance component in the state of the battery being charged is a second resistance value; wherein the first resistance value is different from the second resistance value. Through the technical solution of the embodiment of the present disclosure, the encryption of the battery is achieved through the encryption component, reducing the potential safety hazards caused by the battery not matching the electrical appliances.

Description

Technical Field

[0001] The present disclosure relates to electronic technology, and in particular to a battery protection circuit, a battery assembly and a terminal. Background Art

[0002] With the widespread use of mobile electronic terminals, rechargeable batteries such as lithium batteries have become an indispensable part of various electronic devices. Good matching performance between batteries and electrical devices is an important indicator to ensure the safety of electrical devices, such as special batteries used in mobile phones. However, counterfeit or inferior batteries often appear on the market, which poses a great threat to the safety of electronic equipment. Summary of the invention

[0003] The present invention provides a battery protection circuit, a battery assembly and a terminal.

[0004] According to a first aspect of an embodiment of the present disclosure, a battery protection circuit is provided, wherein the battery protection circuit is connected to a battery and comprises:

[0005] Charging and discharging interface, used to connect with external load circuit;

[0006] An encryption component, comprising a resistance detection terminal and a resistance component, wherein the resistance component is connected between the charge and discharge interface and the resistance detection terminal, wherein the resistance detection terminal is used for an external detection circuit to detect the resistance value of the resistance component, so as to determine the legitimacy of the battery according to the resistance value;

[0007] The resistance value of the resistor component when the battery is in a discharged state is a first resistance value;

[0008] The resistance value of the resistor component when the battery is in a charged state is a second resistance value;

[0009] The first resistance value is different from the second resistance value.

[0010] In some embodiments, the battery protection circuit further includes:

[0011] A switch is connected to the battery and the resistor component, and is used to switch the resistance value of the resistor component when the battery switches between a charging state and a discharging state.

[0012] In some embodiments, the resistor assembly includes at least two resistors;

[0013] The switching switch is used to switch the number of resistors in the resistor component that are connected between the resistor detection terminal and the charge and discharge interface.

[0014] In some embodiments, the resistor assembly includes a first resistor and a second resistor connected in series with each other;

[0015] The switching switch is used to turn on the first resistor in the charging state, and is used to turn on the first resistor and the second resistor in the discharging state.

[0016] In some embodiments, the resistor assembly includes a third resistor and a fourth resistor connected in parallel with each other;

[0017] The switching switch is used to conduct the third resistor and the fourth resistor in the charging state, and is used to conduct the fourth resistor in the discharging state.

[0018] In some embodiments, the battery protection circuit further includes:

[0019] a comparator, connected to the charge and discharge interface, the battery and the switch, respectively; the comparator is used to output a first level to the switch when the battery is in a charging state; the comparator is used to output a second level to the switch when the battery is in a discharging state;

[0020] The switch state of the switching switch when the comparator outputs the first level is different from the switch state when the comparator outputs the second level.

[0021] In some embodiments, the charge and discharge interface includes: a positive terminal and a negative terminal; wherein the resistor component is connected between the negative terminal and the resistance detection terminal.

[0022] In some embodiments, the battery protection circuit further includes:

[0023] A battery protection chip connected to the charging and discharging interface and the battery;

[0024] A switch component, comprising a control end, an input end and an output end; the control end is connected to the battery protection chip; the input end is connected to the battery, and the output end is connected to the charge and discharge interface;

[0025] The battery protection chip is used to control the switch component to cut off the connection between the charging and discharging interface and the battery when the battery is abnormally charged or discharged.

[0026] According to a second aspect of an embodiment of the present disclosure, there is provided a battery assembly, including:

[0027] Battery;

[0028] The battery protection circuit as described in any of the above embodiments is connected to the battery; the battery protection circuit is connected to an external load circuit through a charge and discharge interface.

[0029] According to a third aspect of an embodiment of the present disclosure, a terminal is provided, including:

[0030] Battery;

[0031] The battery protection circuit as described in any of the above embodiments is connected to the battery;

[0032] a load circuit connected to the battery protection circuit through a charge and discharge interface of the battery protection circuit;

[0033] The detection circuit is connected to the resistance detection terminal of the battery protection circuit and is used to detect the resistance value of the resistance component in the battery protection circuit.

[0034] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: through the technical solution in the embodiments of the present disclosure, an encryption component with a resistance component is provided in the battery protection circuit, and during the charging and discharging process, an external detection circuit, such as a detection circuit in an electronic device, can determine whether the battery is a battery that meets the requirements by detecting the resistance value of the resistance component in the encryption component, thereby improving the safety of the battery and enhancing the user experience.

[0035] 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 present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0037] Figure 1 The structure of a battery protection circuit according to an exemplary embodiment is shown in FIG. Figure 1 ;

[0038] Figure 2 The structure of a battery protection circuit according to an exemplary embodiment is shown in FIG. Figure 2 ;

[0039] Figure 3 is a schematic diagram of a structure of a resistor component in a battery protection circuit according to an exemplary embodiment Figure 1 ;

[0040] Figure 4 is a schematic diagram of a structure of a resistor component in a battery protection circuit according to an exemplary embodiment Figure 2 ;

[0041] Figure 5 The structure of a battery protection circuit according to an exemplary embodiment is shown in FIG. Figure 3 ;

[0042] Figure 6The structure of a battery protection circuit according to an exemplary embodiment is shown in FIG. Figure 4 ;

[0043] Figure 7 The structure of a battery protection circuit according to an exemplary embodiment is shown in FIG. Figure 5 ;

[0044] Figure 8 is a schematic structural diagram of a battery assembly according to an exemplary embodiment;

[0045] Fig. 9 is a schematic diagram of the structure of a terminal according to an exemplary embodiment;

[0046] Fig. 10A is a schematic diagram of a resistor assembly according to an exemplary embodiment. Figure 1 ;

[0047] Fig. 10B The structure of a battery protection circuit according to an exemplary embodiment is shown in FIG. Figure 6 ;

[0048] Fig.11A is a schematic diagram of a resistor assembly according to an exemplary embodiment. Figure 2 ;

[0049] Fig. 11B The structure of a battery protection circuit according to an exemplary embodiment is shown in FIG. Figure 7 ;

[0050] Fig.12 It is a block diagram of a physical structure of a terminal according to an exemplary embodiment. DETAILED DESCRIPTION

[0051] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0052] Figure 1 is a schematic structural diagram of a battery protection circuit according to an exemplary embodiment. Figure 1 As shown, the battery protection circuit 100 is connected to the battery 200 and includes:

[0053] A charge and discharge interface 110, used to connect to an external load circuit 300;

[0054] The encryption component 120 includes a resistance detection terminal 121 and a resistance component 122, wherein the resistance component 122 is connected between the charge and discharge interface 110 and the resistance detection terminal 121, wherein the resistance detection terminal 121 is used for an external detection circuit 400 to detect the resistance value of the resistance component 122, so as to determine the legitimacy of the battery according to the resistance value;

[0055] The resistance value of the resistor component 122 when the battery is in a discharged state is a first resistance value;

[0056] The resistance value of the resistor component 122 when the battery is in a charged state is a second resistance value;

[0057] The first resistance value is different from the second resistance value.

[0058] In the disclosed embodiment, the battery protection circuit is used to encrypt the battery and protect the legitimacy of the battery through encryption. The external circuit determines the charge and discharge parameters of the battery, such as whether the charge and discharge voltage and charge and discharge current meet the specification requirements, by detecting the battery protection circuit. Among them, the battery protection circuit includes an encryption component, and the resistance detection end of the encryption component can be connected to an external detection circuit. Here, the external detection circuit can be part of the load circuit or a separate detection circuit. For example, the main board in the mobile phone includes a load circuit connected to the battery protection circuit, which is responsible for transmitting the electrical energy provided by the battery to the various hardware modules of the mobile phone. The main board also includes a detection circuit, which can be connected to the resistance detection end of the battery protection circuit to detect the resistance value of the resistance component.

[0059] In the disclosed embodiment, since the resistor component has a set resistance value, if the connected battery is a counterfeit battery, a low-quality battery, or a faulty battery, the resistance value of the detection resistor component may be abnormal due to unstable or inaccurate current and voltage during the charging and discharging process. If it is a battery that meets the regulations, such as an original battery, a battery specified by the original factory, etc., then when testing during the charging and discharging process, a normal value can be detected based on the matching of the battery and the resistor component. In this way, the effect of battery encryption can be achieved by measuring the resistance value of the resistor component through an external detection circuit.

[0060] In the disclosed embodiment, the resistor component may have different resistance values ​​in different states of the battery, wherein the resistance value of the resistor component is a first resistance value when the battery is discharged, and a second resistance value when the battery is charged.

[0061] In this way, when the external detection circuit detects the resistance value, it can determine whether the battery matches according to the charging and discharging status, thereby improving the overall encryption capability of the encryption component. Compared with the single resistor encryption method, it is more difficult to be cracked, which improves the safety performance of the battery.

[0062] In some embodiments, Figure 2 As shown, the battery protection circuit 100 further includes:

[0063] The switch 130 is connected to the battery 200 and the resistor component 122, and is used to switch the resistance value of the resistor component 122 when the battery 200 switches between a charging state and a discharging state.

[0064] Since the resistor assembly may be composed of multiple resistor elements, and each resistor element may have a fixed resistance value, in the embodiment of the present disclosure, the total resistance value of the resistor assembly may be changed by the switch state of the switch connected to the resistor assembly. For example, the resistor assembly may include at least two resistors in series, or at least two resistors in parallel, or multiple resistors including at least two resistors in parallel and at least two resistors in series, etc. The connection relationship of at least one resistor is changed by switching the switch, so as to achieve the effect of changing the resistance value.

[0065] In this way, the encryption component as a whole has encryption effects in a variety of different states, that is, the resistance component has different resistance values ​​in different states, thereby improving the encryption effect.

[0066] In some embodiments, the resistor assembly includes at least two resistors;

[0067] The switching switch is used to switch the number of resistors in the resistor component that are connected between the resistor detection terminal and the charge and discharge interface.

[0068] In the embodiment of the present disclosure, the resistor component can be composed of multiple resistors, which can be connected in series, in parallel, or in combination. The switch can change the overall resistance value of the resistor component by cutting off or turning on some of the resistors.

[0069] In this way, multiple encryption methods can be realized through simple switch settings, which is low-cost, easy to implement, and occupies less space in the battery protection circuit, making it easy to promote and use.

[0070] In some embodiments, Figure 3 As shown, the resistor component 122 includes a first resistor R1 and a second resistor R2 connected in series;

[0071] The switch 130 is used to turn on the first resistor R1 in the charging state, and is used to turn on the first resistor R1 and the second resistor R2 in the discharging state.

[0072] Here, it is pointed out by way of example that the resistor assembly can be composed of two resistors connected in series. The term "connected in series" here refers to connecting in series between the charge-discharge interface 110 and the resistor detection terminal 121. The switch 130 can be connected to the wire between the charge-discharge interface and the two resistors.

[0073] In the charging state, the switch 130 can be in the on state, so that the second resistor R2 is short-circuited, so that only the first resistor R1 is connected between the charge and discharge interface and the resistance detection terminal 121. At this time, the overall resistance of the resistor component 122 is the resistance of R1.

[0074] In the discharge state, the switch 130 can be in the off state, so that the first resistor R1 and the second resistor R2 are connected between the charge and discharge interface and the resistance detection terminal 121. At this time, the overall resistance of the resistor component 122 is the sum of R1 and R2, that is, the total resistance of the two resistors in series.

[0075] It should be noted that the charging state and discharging state here are only illustrative examples. In practical applications, the second resistor R2 may be turned on in the charging state, and the first resistor R1 and the second resistor R2 may be turned on in the discharging state; or the first resistor R1 and the second resistor R2 may be turned on in the charging state, and the first resistor R1 may be turned on in the discharging state. That is, the change of the state of the switch 130 with the charging and discharging state may be related to the connection mode between the switch 130 and the battery 200. This is not limited in the embodiments of the present application.

[0076] In some embodiments, Figure 4 As shown, the resistor assembly 122 includes a third resistor R3 and a fourth resistor R4 connected in parallel with each other;

[0077] The switch 130 is used to conduct the third resistor R3 and the fourth resistor R4 in the charging state, and is used to conduct the fourth resistor R4 in the discharging state.

[0078] In the embodiment of the present disclosure, in addition to the above series connection, a parallel connection as described in the present embodiment can be used. That is, the third resistor R3 and the fourth resistor R4 are connected in parallel between the charge and discharge interface and the resistance detection terminal 121. The switch 130 can be connected to one of the resistors, such as the branch where the fourth resistor R4 is located.

[0079] In the charging state, the switch 130 can be in the on state, so that the third resistor R3 and the fourth resistor R4 are connected between the charge and discharge interface and the resistance detection terminal 121. At this time, the overall resistance of the resistor component 122 is the parallel resistance of R3 and R4, that is, R3*R4 / (R3+R4).

[0080] In the discharge state, the switch 130 can be in the off state, so that the third resistor R3 is connected between the charge and discharge interface and the resistance detection terminal 121, and the fourth resistor R4 is disconnected. At this time, the overall resistance of the resistor component 122 is R3.

[0081] In this way, through the above-mentioned series or parallel connection, different resistance values ​​can be achieved in the battery charging state and discharge state. For the external detection resistor, different resistance matching detection can be performed in different states to determine whether the battery meets the regulations. This method is simple to detect, but it is not easy to be cracked, thereby improving the battery protection effect and safety performance.

[0082] In some embodiments, Figure 5 As shown, the battery protection circuit 100 further includes:

[0083] The comparator 140 is connected to the charge and discharge interface 110, the battery 200 and the switch 130 respectively; when the battery is in a charging state, the comparator is used to output a first level to the switch; when the battery is in a discharging state, the comparator is used to output a second level to the switch;

[0084] The switch state of the switching switch when the comparator outputs the first level is different from the switch state when the comparator outputs the second level.

[0085] Here, the power supply terminal of the comparator is connected to the battery, and the input terminal of the comparison signal and the reference terminal are connected to the charge and discharge interface. Since the charge and discharge interface has two terminals, positive and negative, one of them can be used as the signal input terminal and the other as the comparison terminal. The output terminal of the comparator is connected to the switch 130.

[0086] In the charging state, the voltage at the input terminal of the comparator is higher than the voltage at the reference terminal, so the comparator outputs a high level. If the switch is composed of an N-type MOS device, the high level output by the comparator can turn on the switch, and if the switch is composed of a P-type MOS device, the high level output by the comparator can turn off the switch.

[0087] Correspondingly, in the discharge state, the voltage at the input terminal of the comparator is lower than the voltage at the reference terminal, so the comparator outputs a low level. At this time, the on or off state of the switch is opposite to that in the charging state.

[0088] Here, the relationship between the input terminal voltage and the reference terminal voltage of the comparator in different states is related to the connection mode, so the above two cases are only exemplary. In practical applications, the comparator can also output a low level in the charging state and a high level in the discharging state.

[0089] In some embodiments, the charge and discharge interface includes: a positive terminal and a negative terminal; wherein the resistor component is connected between the negative terminal and the resistance detection terminal.

[0090] In the disclosed embodiment, the charge and discharge interface includes a positive terminal P+ and a negative terminal P-, which are connected to the positive and negative poles of the external circuit respectively. During the charging process, the current flows from the positive terminal to the battery and then from the battery to the negative terminal to form a loop. During the discharging process, the current flows from the negative terminal to the battery and then from the battery back to the positive terminal to form a loop.

[0091] The above-mentioned resistor component is connected between the negative terminal and the resistor detection terminal, so that the resistance detected by the resistor detection terminal is the resistance on the path between the negative terminal and the resistor detection terminal.

[0092] In some embodiments, Figure 6 and Figure 7 As shown, the battery protection circuit further includes:

[0093] A battery protection chip 150 connected to the charge and discharge interface 110 and the battery 200;

[0094] The switch assembly 160 includes a control terminal 161, an input terminal 162 and an output terminal 163; the control terminal 161 is connected to the battery protection chip 150; the input terminal 162 is connected to the battery 200, and the output terminal 161 is connected to the charge and discharge interface 110;

[0095] The battery protection chip is used to control the switch component to cut off the connection between the charging and discharging interface and the battery when the battery is abnormally charged or discharged.

[0096] here, Figure 7 The battery protection circuit includes the switch 130 and the comparator 140 in combination with the above-mentioned embodiment.

[0097] Here, the battery protection circuit is used to reduce the situation where circuit instability factors affect the circuit effect, such as overcurrent protection, overvoltage protection, overheating protection, no-load protection, and short-circuit protection, etc. The battery protection chip is used to detect the current or voltage state during the battery charging and discharging process, and control the on and off of the switch component according to these voltage signals, and then achieve the effect of protecting the circuit by cutting off the charging and discharging circuit in the case of circuit abnormality.

[0098] Through this battery protection circuit, on the one hand, the battery protection chip can be used to form electrical protection such as overvoltage and overcurrent to improve the reliability of charging and discharging; on the other hand, the battery can be encrypted through the encryption component to facilitate the charging and discharging circuit and the terminal to authenticate the battery, thereby improving the safety of the battery.

[0099] Figure 8 is a schematic diagram of a battery assembly 800 according to an exemplary embodiment. Figure 8 As shown, the battery assembly 800 includes:

[0100] Battery 200;

[0101] The battery protection circuit 100 as described in any of the above embodiments is connected to the battery 200 ; the battery protection circuit 100 is connected to the external load circuit 300 through the charge and discharge interface 110 .

[0102] In the disclosed embodiment, the battery assembly includes a battery protection circuit and a battery. The battery protection circuit can be packaged with the battery in a battery housing, the battery is connected to the battery protection circuit and is located inside the battery housing, and the charge and discharge interface of the battery protection circuit extends to the outside of the battery housing and can be connected to the load circuit.

[0103] Here, the battery protection circuit has an encryption component as in any of the above embodiments, so during the charging and discharging process, the external circuit can detect the resistance detection end of the battery protection circuit. For counterfeit products, the resistance matching the predetermined value may not be detected during the detection process, so the counterfeit products can be identified, thereby improving the encryption performance of the battery component and improving the product reliability.

[0104] Fig. 9 is a schematic diagram of a terminal structure according to an exemplary embodiment. Fig. 9 As shown, the terminal 900 includes:

[0105] Battery 200;

[0106] The battery protection circuit 100 as described in any of the above embodiments is connected to the battery 200;

[0107] A load circuit 300 connected to the battery protection circuit 100 through the charge and discharge interface 110 of the battery protection circuit 100;

[0108] The detection circuit 400 is connected to the resistance detection terminal 121 of the battery protection circuit 100 , and is used for detecting the resistance value of the resistance component 122 in the battery protection circuit 100 .

[0109] In the embodiments of the present disclosure, the battery protection circuit may be located on the main board of the terminal or may be located separately inside the terminal, connected to the battery and connected to a load circuit located on the terminal main board or other locations; it may also be packaged together with the battery inside the battery casing and connected to the load circuit through a charge and discharge interface.

[0110] Here, the load circuit and the detection circuit may be located on the same main board of the terminal, or may be located on different circuit boards in the terminal and respectively connected to the battery protection circuit.

[0111] The electric energy provided by the battery can reach the load circuit of the terminal through the battery protection circuit and be transmitted to other components of the terminal. The charging port of the terminal can be connected to the charging and discharging interface of the battery protection circuit and transmit the electric energy provided by the external power supply to the battery through the battery protection circuit.

[0112] Since the battery protection circuit includes an encryption component, the detection circuit in the terminal can detect the resistance component in the encryption component through the resistance detection terminal to determine whether the resistance value meets the predetermined standard, thereby detecting the legitimacy of the battery. If the terminal determines that the battery does not meet the regulations during the detection process, the battery's charge and discharge current and voltage can be limited, thereby reducing the safety hazards caused by counterfeit batteries or battery failures.

[0113] The present disclosure also provides the following examples:

[0114] In the embodiment of the present disclosure, a solution is provided for encrypting the battery protection circuit by using a detection resistor or ID resistor in the battery protection circuit. The detection resistor or ID resistor is a resistor component in the encryption component.

[0115] like Fig. 10A As shown, the resistor component is a resistor R1 and a resistor R2 connected in series. When the battery is in a charging state, the switching switch M is closed, and the detection circuit can detect that the total resistance is R1; when the battery is in a discharging state, the switching switch M is disconnected, and the resistors R1 and R2 form a series resistor. At this time, the total resistance detected by the detection circuit is R1+R2.

[0116] Specific circuits such as Fig. 10B As shown, during charging, the comparator 140 outputs a high level to turn on the switch M, so that the total resistance of the resistor component is R1. During discharging, the comparator 140 outputs a low level to turn off the switch M, and the total resistance of the resistor component is R1+R2.

[0117] like Fig.11A As shown, the resistor component is a resistor R3 and a resistor R4 connected in parallel. When the battery is in a charging state, the switching switch is closed, and the resistors R3 and R4 form a parallel resistor. The detection circuit can detect that the total resistance is R3*R4 / (R3+R4); when the battery is in a discharging state, the switching switch M is disconnected, and only R4 is connected to the circuit. Therefore, the total resistance detected by the detection circuit is R4.

[0118] Specific circuits such as Fig. 11BAs shown, when charging, the comparator outputs a high level to turn on the switch M, so that the total resistance of the resistor component is R3*R4 / (R3+R4). When discharging, the comparator outputs a low level to turn off the switch M, and the total resistance of the resistor component is R4.

[0119] In this way, compared with using encryption IC to encrypt the battery, it is simple and easy to implement, reduces costs, and can see the steps of burning the battery protection board. It is also more difficult to crack than the encryption method of a single resistor.

[0120] Fig.12 1 is a block diagram of a terminal 1000 according to an exemplary embodiment. For example, the terminal 1000 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.

[0121] Reference Fig.12 The terminal 1000 may include one or more of the following components: a processing component 1001, a memory 1002, a power component 1003, a multimedia component 1004, an audio component 1005, an input / output (I / O) interface 1006, a sensor component 1007, and a communication component 1008.

[0122] The processing component 1001 generally controls the overall operation of the terminal 1000, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 1001 may include one or more processors 1010 to execute instructions to complete all or part of the steps of the above method. In addition, the processing component 1001 may also include one or more modules to facilitate the interaction between the processing component 1001 and other components. For example, the processing component 1001 may include a multimedia module to facilitate the interaction between the multimedia component 1004 and the processing component 1001.

[0123] The memory 1010 is configured to store various types of data to support operations at the terminal 1000. Examples of such data include instructions for any application or method operating on the terminal 1000, contact data, phone book data, messages, pictures, videos, etc. The memory 1002 may be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as a static random access memory (SRAM), an electrically erasable programmable read-only memory (EEPROM), an erasable programmable read-only memory (EPROM), a programmable read-only memory (PROM), a read-only memory (ROM), a magnetic memory, a flash memory, a magnetic disk, or an optical disk.

[0124] The power supply component 1003 provides power to various components of the terminal 1000. The power supply component 1003 may include: a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the terminal 1000.

[0125] The multimedia component 1004 includes a screen that provides an output interface between the terminal 1000 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 may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may 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 1004 includes a front camera and / or a rear camera. When the terminal 1000 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera may receive external multimedia data. Each front camera and / or the rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

[0126] The audio component 1005 is configured to output and / or input audio signals. For example, the audio component 1005 includes a microphone (MIC), and when the terminal 1000 is in an operation mode, such as a call mode, a recording mode, and a speech recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 1010 or sent via the communication component 1008. In some embodiments, the audio component 1005 also includes a speaker for outputting audio signals.

[0127] I / O interface 1006 provides an interface between processing component 1001 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: home button, volume button, start button, and lock button.

[0128] The sensor assembly 1007 includes one or more sensors for providing various aspects of status assessment for the terminal 1000. For example, the sensor assembly 1007 can detect the open / closed state of the terminal 1000, the relative positioning of the components, such as the display and keypad of the terminal 1000, and the sensor assembly 1007 can also detect the position change of the terminal 1000 or a component of the terminal 1000, the presence or absence of contact between the user and the terminal 1000, the orientation or acceleration / deceleration of the terminal 1000, and the temperature change of the terminal 1000. The sensor assembly 1007 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 1007 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 1007 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0129] The communication component 1008 is configured to facilitate wired or wireless communication between the terminal 1000 and other devices. The terminal 1000 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 1008 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 1008 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 or other technologies.

[0130] In an exemplary embodiment, terminal 1000 can 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 methods.

[0131] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 1002 including instructions, and the instructions can be executed by a processor 1010 of a terminal 1000 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.

[0132] The embodiments of the present disclosure also provide a non-temporary computer-readable storage medium. When the instructions in the storage medium are executed by the processor of the mobile terminal, the mobile terminal can execute the method provided by any of the above embodiments.

[0133] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed in this disclosure. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0134] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A battery protection circuit, characterized in that: The battery protection circuit is connected to the battery and includes: Charging and discharging interface, used to connect with external load circuit; An encryption component, comprising a resistance detection terminal and a resistance component, wherein the resistance component is connected between the charge and discharge interface and the resistance detection terminal, wherein the resistance detection terminal is used for an external detection circuit to detect the resistance value of the resistance component, so as to determine the legitimacy of the battery according to the resistance value; The resistance value of the resistor component when the battery is in a discharged state is a first resistance value; The resistance value of the resistor component when the battery is in a charged state is a second resistance value; The first resistance value is different from the second resistance value.

2. The battery protection circuit according to claim 1, characterized in that: The battery protection circuit further includes: A switch is connected to the battery and the resistor component, and is used to switch the resistance value of the resistor component when the battery switches between a charging state and a discharging state.

3. The battery protection circuit according to claim 2, characterized in that: The resistor assembly includes at least two resistors; The switching switch is used to switch the number of resistors in the resistor component that are connected between the resistor detection terminal and the charge and discharge interface.

4. The battery protection circuit according to claim 3, characterized in that: The resistor assembly includes a first resistor and a second resistor connected in series; The switching switch is used to turn on the first resistor in the charging state, and is used to turn on the first resistor and the second resistor in the discharging state.

5. The battery protection circuit according to claim 3, characterized in that: The resistor assembly includes a third resistor and a fourth resistor connected in parallel with each other; The switching switch is used to conduct the third resistor and the fourth resistor in the charging state, and is used to conduct the fourth resistor in the discharging state.

6. The battery protection circuit according to any one of claims 2 to 5, characterized in that: The battery protection circuit also includes: a comparator, connected to the charge and discharge interface, the battery and the switch, respectively; the comparator is used to output a first level to the switch when the battery is in a charging state; the comparator is used to output a second level to the switch when the battery is in a discharging state; The switch state of the switching switch when the comparator outputs the first level is different from the switch state when the comparator outputs the second level.

7. The battery protection circuit according to claim 1, characterized in that: The charge and discharge interface includes a positive terminal and a negative terminal; wherein the resistor component is connected between the negative terminal and the resistor detection terminal.

8. The battery protection circuit according to claim 1, characterized in that: The battery protection circuit further includes: A battery protection chip connected to the charging and discharging interface and the battery; A switch component, comprising a control end, an input end and an output end; the control end is connected to the battery protection chip; the input end is connected to the battery, and the output end is connected to the charge and discharge interface; The battery protection chip is used to control the switch component to cut off the connection between the charging and discharging interface and the battery when the battery is abnormally charged or discharged.

9. A battery assembly, characterized in that: The battery assembly comprises: Battery; The battery protection circuit according to any one of claims 1 to 8 is connected to the battery; the battery protection circuit is connected to an external load circuit through a charge and discharge interface.

10. A terminal, characterized in that: The terminal comprises: Battery; The battery protection circuit according to any one of claims 1 to 8, connected to the battery; a load circuit connected to the battery protection circuit through a charge and discharge interface of the battery protection circuit; The detection circuit is connected to the resistance detection terminal of the battery protection circuit and is used to detect the resistance value of the resistance component in the battery protection circuit.

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