CN117110913B

CN117110913B - Battery detection circuit, electronic device, and battery detection method

Info

Publication number: CN117110913B
Application number: CN202311324692.0A
Authority: CN
Inventors: 温玉磊
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2023-10-13
Filing date: 2023-10-13
Publication date: 2024-04-05
Anticipated expiration: 2043-10-13
Also published as: CN117110913A

Abstract

The application provides a battery detection circuit, electronic equipment and battery detection method, relates to electronic equipment technical field, and this battery detection circuit includes: a first sub-circuit and a second sub-circuit, the first sub-circuit including a first branch and a second branch, the second sub-circuit including a third branch and a fourth branch; the first branch circuit and the third branch circuit are connected to the first node, the first branch circuit is used for dividing voltage, and the third branch circuit is used for detecting the temperature of the battery; the second branch circuit and the fourth branch circuit are connected to the second node, the second branch circuit is used for dividing voltage, the fourth branch circuit is used for detecting the resistance value of the ID resistor included in the fourth branch circuit based on the temperature of the battery so as to determine the authenticity of the battery, the battery comprises a battery core and a battery protection board, and the second sub-circuit is located on the battery protection board. The temperature that battery current flowed through is detected through the second sub-circuit that sets up on the battery protection shield to the true and false of discernment battery.

Description

Battery detection circuit, electronic device, and battery detection method

Technical Field

The present disclosure relates to the field of electronic devices, and in particular, to a battery detection circuit, an electronic device, and a battery detection method.

Background

With the development of battery technology, the battery charging power of electronic devices is increasing, and the charging safety is also more and more important. However, the quality of the non-original battery in the market is not guaranteed, and safety accidents such as fire and explosion can be caused when the charging electrode is started, so that personal and property damage is caused.

Therefore, how to identify a battery, and distinguish whether the battery is a primary battery or a non-primary battery, is a problem that needs to be solved.

Disclosure of Invention

The application provides a battery detection circuit, electronic equipment and a battery detection method, wherein a second sub-circuit arranged on a battery protection plate is used for detecting the temperature of a battery through which a battery current flows so as to identify the authenticity of the battery.

In a first aspect, embodiments of the present application provide a battery detection circuit, including: a first sub-circuit and a second sub-circuit, the first sub-circuit including a first branch and a second branch, the second sub-circuit including a third branch and a fourth branch; the first branch circuit and the third branch circuit are connected to the first node, the first branch circuit is used for dividing voltage, and the third branch circuit is used for detecting the temperature of the battery; the second branch circuit and the fourth branch circuit are connected to the second node, the second branch circuit is used for dividing voltage, the fourth branch circuit is used for detecting the resistance value of the ID resistor included in the fourth branch circuit based on the temperature of the battery so as to determine the authenticity of the battery, the battery comprises a battery core and a battery protection board, and the second sub-circuit is located on the battery protection board.

In the embodiment of the application, the battery detection circuit accurately detects the temperature of the battery; further, the resistance value of the ID resistor can be accurately calculated based on the accurate temperature, and thus, whether the battery is a genuine battery or a non-genuine battery can be recognized based on the resistance value of the ID resistor. The battery detection circuit provided by the application comprises simple devices, is low in preparation cost and is easy to realize. In addition, when the temperature is detected, the temperature change generated by the current can enhance the anti-counterfeiting decoding difficulty.

In one possible implementation embodiment, the battery detection circuit provided by the application can realize battery anti-counterfeiting identification under high power, such as charging power of more than 40W, without risk of damaging the battery.

With reference to the first aspect, in one possible implementation manner, a distance between the second sub-circuit and the tab of the battery core is smaller than a first preset distance threshold, and/or a distance between the second sub-circuit and a lead wire connected with the tab in the battery protection board in a horizontal direction or a vertical direction is smaller than a second preset distance threshold.

The first preset distance threshold and the second preset distance threshold may be set as required, and may be the same or different, which is not limited in this application.

In the implementation mode, the distance between the second sub-circuit and the battery core and/or the lead wires is relatively short, so that the temperature of the battery can be detected more accurately when the second sub-circuit is used for detecting the temperature of the battery, and a more accurate temperature value is obtained; thus, when the authenticity of the battery is determined based on the temperature, the result can be determined more accurately.

Of course, the second sub-circuit may also be disposed at other positions on the battery protection board, for example, at a greater distance from the tab of the battery cell and/or from the lead wire connected to the tab in the battery protection board, which is not limited in this application.

With reference to the first aspect, in one possible implementation manner, the third branch includes a first temperature-sensitive resistor, one end of the first temperature-sensitive resistor is connected to the first node, and the other end of the first temperature-sensitive resistor is connected to the ground terminal.

In this implementation, the first temperature sensitive resistor is used to enable detection of the temperature of the battery.

With reference to the first aspect, in a possible implementation manner, the fourth branch further includes a second temperature-sensitive resistor, one end of the second temperature-sensitive resistor is connected with the second node after being connected with the ID resistor in series, and the other end of the second temperature-sensitive resistor is connected with the ground terminal.

In this implementation, the second temperature-sensitive resistor multiplexes the temperature of the first temperature-sensitive resistor; the resistance of the second temperature-sensitive resistor changes along with the temperature, so that the overall resistance of the fourth branch circuit changes.

With reference to the first aspect, in a possible implementation manner, the fourth branch further includes a second temperature-sensitive resistor, one end of the second temperature-sensitive resistor is connected with the second node after being connected with the ID resistor in parallel, and the other end of the second temperature-sensitive resistor is connected with the ground terminal.

With reference to the first aspect, in a possible implementation manner, the fourth branch further includes a third temperature-sensitive resistor, and the third temperature-sensitive resistor is connected in parallel to two ends of the second temperature-sensitive resistor.

In this implementation, the third temperature sensitive resistor multiplexes the temperature of the first temperature sensitive resistor; the resistance values of the second temperature-sensitive resistor and the third temperature-sensitive resistor can change along with the temperature, so that the whole resistance value of the fourth branch circuit can change.

With reference to the first aspect, in a possible implementation manner, the fourth branch further includes a third temperature-sensitive resistor, and the third temperature-sensitive resistor is connected in parallel to two ends of the ID resistor.

With reference to the first aspect, in one possible implementation manner, the first branch includes a first pull-up resistor, one end of the first pull-up resistor is connected to the first power supply, and the other end is connected to the first node;

the second branch circuit comprises a second pull-up resistor, one end of the second pull-up resistor is connected with a second power supply, and the other end of the second pull-up resistor is connected with a second node.

Optionally, the voltages of the first power supply and the second power supply are the same, and the resistances of the first pull-up resistor and the second pull-up resistor are the same.

In this implementation, the first branch and the second branch are used for voltage division and protection of the circuit, respectively.

With reference to the first aspect, in one possible implementation manner, the first temperature-sensitive resistor and the second temperature-sensitive resistor are located adjacent to each other.

In a second aspect, embodiments of the present application provide an electronic device comprising a battery, a circuit board, and a battery detection circuit as in any one of the first aspects above; the battery is connected with the circuit board; the circuit board is respectively connected with the first node and the second node of the battery detection circuit, and is used for collecting the first voltage at the first node and the second voltage at the second node, determining the temperature of the battery according to the first voltage, and determining the resistance value of the ID resistor included in the fourth branch according to the temperature and the second voltage so as to determine the authenticity of the battery; the second sub-circuit is located on a battery protection plate in the battery.

In this embodiment, when the electronic device 100 is turned on, a current flows in a loop connected between the processing chip 121 and the battery cell 111, and the current changes in temperature. Based on this, this application sets up third branch road and fourth branch road on battery protection board to make third branch road and fourth branch road be in the same temperature environment, and then utilize the third branch road to detect the temperature that the electric current flows through, utilize this temperature of fourth branch road multiplexing as self temperature, further confirm the resistance of ID resistance that includes, in order to confirm the true and false of battery.

With reference to the second aspect, in one possible implementation manner, the circuit board includes a processing chip connected to the battery and connected to the first node and the second node of the battery detection circuit respectively; the first sub-circuit is located on the circuit board.

In a third aspect, an embodiment of the present application provides a battery detection method, which is applied to the electronic device according to any one of the second aspect, and the method includes: responding to user operation, and starting up; collecting a first voltage of a first node and a second voltage of a second node in a battery detection circuit at the same time; determining a temperature of the battery based on the first voltage; and determining the resistance value of the ID resistor based on the second voltage and the temperature to determine the authenticity of the battery.

In this embodiment, when the electronic device is turned on, a current flows in a loop connected between the processing chip and the battery cell, and the current generates a temperature change. Based on the above, the third branch and the fourth branch are arranged on the battery protection board, so that the third branch and the fourth branch are in the same temperature environment, and the temperature detected by the third branch is determined by using the collected voltage at the first node; and the fourth branch is used for multiplexing the temperature as the temperature of the battery and the acquired voltage at the second node to further determine the resistance value of the ID resistor included in the fourth branch so as to determine the authenticity of the battery.

It should be noted that if the battery is not an original battery, the resistance value in the fourth branch is not changed, and is a fixed resistance value, and the second voltage detected by the processing chip during starting up is not changed, so that when the method provided by the application is continuously used for calculating, the influence of the temperature is calculated into the ID resistance value, and thus the ID resistance value is in error calculation and is inconsistent with the expected ID resistance value.

With reference to the third aspect, in one possible implementation manner, when the third branch includes the first temperature-sensitive resistor, determining, based on the first voltage, a temperature of the battery includes: determining the resistance value of a first temperature-sensitive resistor in a third branch based on the first voltage; and inquiring a mapping relation table, wherein the temperature corresponding to the resistance value of the first temperature-sensitive resistor is determined to be the temperature of the battery, and the mapping relation table comprises one-to-one correspondence relations between different resistance values and different temperatures of the first temperature-sensitive resistor.

With reference to the third aspect, in one possible implementation manner, when the fourth branch includes the second temperature-sensitive resistor, determining the authenticity of the battery based on the second voltage and the temperature includes: inquiring a mapping relation table based on the temperature, and determining the resistance value of the second temperature-sensitive resistor in the fourth branch; the mapping relation table also comprises one-to-one correspondence relation between different resistance values of the second temperature-sensitive resistor and different temperatures; determining the resistance value of the ID resistor in the fourth branch based on the temperature and the resistance value of the second temperature-sensitive resistor; and comparing the resistance value of the ID resistor with the preset resistance value of the ID resistor, and determining the authenticity of the battery.

In a fourth aspect, embodiments of the present application provide a chip, the chip including: a processor and a memory for storing a computer program; the processor is configured to execute the computer program to cause the electronic device on which the chip is located to implement the battery detection method according to any one of the third aspects described above.

In a fifth aspect, embodiments of the present application provide a computer-readable storage medium having a computer program stored therein, which when run on an electronic device, causes the electronic device to perform the battery detection method as in any one of the above third aspects.

In a sixth aspect, embodiments of the present application provide a computer program product comprising: computer program code which, when run by an electronic device, causes the electronic device to perform the battery detection method as described in any of the third aspects above.

According to the temperature-sensitive resistor, the temperature-sensitive resistor is arranged on the battery protection board and is close to the battery core in the battery, so that the temperature-sensitive resistor is influenced by heat generated by current in the battery, the resistance value changes, and the resistance value of the ID resistor can be reversely calculated based on the change. The application converts unordered heat change into ordered resistance change, improves the detection precision of the resistance of the ID resistor, and further has stronger and more accurate anti-counterfeiting performance.

The method and the device are started for multiple times by setting multiple time points, and the authenticity of the battery is determined by multiple times of collection, so that multiple times of judgment can be performed based on the resistance values of the ID resistors corresponding to different times of multiple times of collection; as the heat generated by the battery is different along with the time, the resistance values of the first temperature-sensitive resistor and the second temperature-sensitive resistor are different, and the anti-counterfeiting robustness can be improved by multiple judgment, so that the cracking difficulty is increased.

Drawings

Fig. 1 is a schematic diagram of a battery detection circuit provided in the related art;

FIG. 2 is a schematic diagram of another battery detection circuit according to the related art;

fig. 3 is a schematic diagram of temperature change corresponding to current provided in an embodiment of the present application;

fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of still another electronic device according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of still another electronic device according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of still another electronic device according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of still another electronic device according to an embodiment of the present application;

fig. 9 is a schematic flow chart of a battery detection method according to an embodiment of the present application;

fig. 10 is a software structural block diagram of an electronic device according to an embodiment of the present application;

FIG. 11 is a schematic diagram of module interaction provided in an embodiment of the present application;

FIG. 12 is a non-original battery presentation interface provided in an embodiment of the present application;

fig. 13 is a schematic illustration of another non-original battery presentation interface provided in an embodiment of the present application.

Reference numerals:

100-an electronic device; 110-cell; 111-cell; 112-a battery protection plate; 120-a circuit board; 121-processing a chip; 130-a battery detection circuit; 131-a first sub-circuit; 132-a second sub-circuit.

Detailed Description

The technical solutions in the present application will be described below with reference to the accompanying drawings.

In the description of the embodiments of the present application, unless otherwise indicated, "/" means or, for example, a/B may represent a or B; "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, in the description of the embodiments of the present application, "plurality" means two or more than two.

The terms "first" and "second" are used below for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

With the development of battery technology, the battery charging power of electronic devices is increasing, and the charging safety is also more and more important.

In general, in the process of repairing the electronic device with a fault of a component, the battery in the electronic device needs to be disassembled after the cover is opened, the fault component is replaced by a new component, and then the battery is reinstalled in the electronic device. During this disassembly and reinstallation, there may be situations where the battery is replaced. For example, the original battery in the electronic device is replaced by the non-original battery, but the quality of the non-original battery in the market is generally not guaranteed, and once the high-power charging electrode is started, the fire, explosion and other safety accidents are possibly caused, so that personal property damage is caused, and therefore, how to accurately identify the battery to distinguish whether the battery is the original battery or the non-original battery becomes a problem to be solved.

In the related art, for low-power charging, the identification of the true or false battery is usually performed by dividing the voltage of the battery pull-down ID resistor, but the ID resistor is fixed, so that the scheme is easy to crack and imitate; for high-power charging, the battery anti-counterfeiting IC is used for identifying the true battery and the false battery, and the scheme is not easy to decipher because the anti-counterfeiting information is encrypted, but the cost is relatively high.

Fig. 1 and 2 exemplarily show two kinds of battery detection circuits provided by the related art, respectively.

As shown in fig. 1, the ID resistance scheme is to detect the resistance value of the ID resistor Rid, and search the battery manufacturer through the detected resistance value; as shown in fig. 2, the anti-counterfeiting IC scheme obtains anti-counterfeiting information in the battery anti-counterfeiting IC through GPIO communication, and then identifies the identity of the battery after verification.

In view of the above, the present application provides a battery detection circuit, an electronic device, and a corresponding battery detection method, the battery detection circuit accurately detecting a temperature of a battery; further, the resistance value of the ID resistor can be accurately calculated based on the accurate temperature, and thus, whether the battery is a genuine battery or a non-genuine battery can be recognized based on the resistance value of the ID resistor. The battery detection circuit provided by the application comprises simple devices, is low in preparation cost and is easy to realize. In addition, when the temperature is detected, the temperature change generated by the current can enhance the anti-counterfeiting decoding difficulty.

The following describes the schemes provided in the embodiments of the present application in detail with reference to fig. 3 to 13.

Illustratively, the electronic device referred to in this application may be a mobile phone (mobile phone), a tablet (pad), a notebook, an in-vehicle terminal, a Virtual Reality (VR) device, an augmented reality (augmented reality, AR) device, a wireless device in an industrial control (industrial control), a wireless device in an unmanned (self driving), a wireless device in a tele-surgery (remote medical surgery), a wireless device in a smart gRid (smart gRid), a wireless device in a transportation security (transportation safety), a wireless device in a smart city (smart home), a wireless device in a smart home (smart home), a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (personal digital assistant, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a wearable device, a terminal device in a future mobile communication network, or a public land mobile network (public land mobile network), etc.

Also by way of example, the electronic device referred to in the present application may also be various vehicles having rechargeable batteries, such as electric automobiles, electric bicycles, mopeds, electric wheelchairs, and the like. For ease of understanding, the following description will be given by taking a scenario in which an electronic device includes a mobile phone as an example.

Secondly, battery detection is generally completed in the starting-up stage of the electronic equipment, namely after the starting-up system is started, whether the battery is an original battery is determined through information interaction and confirmation with the battery; if the battery is an original battery, the battery is normally started for use and can be normally charged; if the battery is not an original battery, the battery will not be started normally when the battery is not an original battery, and charging is not allowed.

The present application contemplates that during the power-on of an electronic device, there is always current flowing through the battery (the battery includes a battery protection plate). The battery is in a discharging state when the charger is not inserted, and current is pumped outwards from the inside of the electronic equipment at the moment; the battery is charged when the charger is plugged, and the battery is charged with current inside the electronic device. The two cases differ only in the direction of current, so that it can be said that no matter whether the electronic device is plugged into a charger or not, current flows through the battery; because the current can generate thermal change or temperature change, the application provides a battery detection circuit which is used for converting unordered and changed current temperature into orderly, controllable and available data to perform anti-counterfeiting identification on the battery.

Fig. 3 is a schematic diagram illustrating a temperature change corresponding to a current provided in an embodiment of the present application. As shown in fig. 3 (a), a schematic diagram of a change in electric current heat generation or a change in temperature; as shown in fig. 3 (b), a schematic diagram of the temperature versus time of the current generation is shown. As can be seen from fig. 3 (b), the temperature of the current increases gradually with time, and the current tends to increase.

The battery detection circuit provided by the application is described below based on the idea.

Fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present application. As shown in fig. 4, the electronic device 100 includes a battery 110, a circuit board 120, and a battery detection circuit 130.

The battery 110 is connected to the circuit board 120, and the battery 110 provides power to the circuit board 120, so that the circuit board 120 supports the electronic device 100. Illustratively, the circuit board 120 may be a motherboard of the electronic device 100.

The battery 110 may be a rechargeable battery. Rechargeable batteries include lithium ion batteries, lead acid batteries, nickel cadmium batteries, nickel iron batteries, or nickel hydrogen batteries, as well as other suitable batteries 110, without limitation. The particular type of battery 110 may depend on the particular context of electronic device 100 and is not limited herein.

As shown in fig. 4, the battery 110 may include a battery cell 111 and a battery protection plate 112. The tab of the battery cell 111 includes a positive tab and a negative tab, and the battery protection plate 112 may be connected to the positive tab and the negative tab of the battery cell 111, respectively.

The cell 111 may be an aluminum-case cell, a soft-pack cell (also known as a polymer cell) or a cylindrical cell. The battery cell 111 is a storage portion of the battery 110 for storing electric power by charging and then discharging the electric power to supply electric power required for operation of the electronic device 100. Illustratively, the positive tab of the cell 111 may output a +5v voltage signal and the negative tab of the cell 111 may output a 0V voltage signal.

The battery protection board 112 may be an integrated circuit board for protecting the battery cells 111. The battery protection plate 112 is connected with the positive electrode tab and the negative electrode tab of the battery cell 111, so that the battery cell 111 is prevented from being overcharged, overdischarged, overlarge in transmission current, overlarge in transmission voltage, short-circuited and the like, and the battery cell 111 is prevented from being damaged.

Optionally, as shown in fig. 4, the battery protection plate 112 may further include a positive electrode lead and a negative electrode lead, wherein one end of the positive electrode lead is connected to the positive electrode tab of the battery core, and the other end is connected to the positive electrode pin of the battery protection plate 112; one end of the negative electrode lead is connected to the negative electrode tab of the battery cell, and the other end is connected to the negative electrode pin of the battery protection plate 112. It should be understood that the positive electrode lead and the negative electrode lead are leads for connection inside the battery protection plate 112. The battery protection board 112 is connected to the circuit board 120 by the positive and negative pins, and then forms a circuit for charging or discharging the battery cell.

Alternatively, as shown in fig. 4, the circuit board 120 may include a board-to-board (BTB) connector. The battery 110 may be connected to the circuit board 120 through a BTB connector, so as to realize signal transmission between the battery 110 and the circuit board 120. The BTB connector may include a plurality of communication pins with which the battery 110 may communicate with the circuit board 120.

Alternatively, as shown in fig. 4, a processing chip 121 may be included in the circuit board 120, and the processing chip 121 may instruct a System On Chip (SOC) chip or a power management chip (power management unit, PMU) or the like, which is not limited in this application. The circuit board 120 may further include a first lead L1 for connecting the processing chip 121 and the positive electrode pin of the battery protection board 112 through the BTB connector, and a second lead L2 for connecting the processing chip 121 and the negative electrode pin of the battery protection board 112 through the BTB connector. Based on the connected processing chip 121 and the battery cell 111, a circuit for charging or discharging the battery cell can be formed.

Here, the circuit board 120 may further include a current sensing resistor; when the circuit board includes a current sensing resistor, the current sensing resistor may be connected between the processing chip 121 and the negative electrode pin of the battery protection board 112 through the second lead L2, and the current sensing resistor is used to be grounded together with the ground terminal of the processing chip 121.

Alternatively, the electronic device 100 may further include a case having an accommodating space therein, and the battery 110, the circuit board 120, and the battery detection circuit 130 may be accommodated in the accommodating space inside the case.

In some embodiments, the housing may comprise plastic. The ductility of the plastic is good, and the plastic shell is beneficial to manufacturing and shaping, so that mass production is facilitated. In addition, the material of the housing may further include a metal material such as aluminum or iron, and may be specifically selected as required, which is not limited in this application.

As shown in fig. 4, in the present application, the battery detection circuit 130 may include: a first sub-circuit 131 and a second sub-circuit 132. The first sub-circuit 131 includes a first branch and a second branch, and the second sub-circuit 132 includes a third branch and a fourth branch.

The first branch circuit and the third branch circuit are connected to the first node a, the first branch circuit is used for dividing voltage, and the third branch circuit is used for detecting the temperature of the battery.

The second branch circuit and the fourth branch circuit are connected to the second node b, the second branch circuit is used for dividing voltage, the fourth branch circuit is used for detecting the resistance value of the ID resistor included in the fourth branch circuit based on the temperature of the battery so as to determine the authenticity of the battery, the battery comprises a battery core and a battery protection board, and the second sub-circuit is located on the battery protection board.

The battery core and the battery protection board included in the battery are the battery core and the battery protection board described above, and are not described herein.

The first branch circuit and the second branch circuit are respectively used for dividing voltage and protecting corresponding circuit structures. The first branch and the second branch may be circuits formed by independent devices, or may be integrated chip structures, which are not limited in this application. In addition, the first branch and the second branch may be disposed on the circuit board or the battery protection board, and of course, one of the branches may be disposed on the circuit board and the other branch may be disposed on the battery protection board. Fig. 4 to 8 each illustrate an example in which the first branch and the second branch in the first sub-circuit 131 are disposed on the circuit board.

It will be appreciated that the third branch may be used to detect the temperature of the battery, since a change in temperature may occur when current is flowing in the battery.

It should be understood that, since the third branch and the fourth branch are both disposed on the battery protection plate, the third branch and the fourth branch are in the same temperature environment, the fourth branch can multiplex the temperature of the battery detected by the third branch as its own temperature, and then detect the resistance value of the included ID resistor based on the temperature to determine the authenticity of the battery.

Optionally, a distance between the second sub-circuit and the tab of the battery core is smaller than a first preset distance threshold, and/or a distance between the second sub-circuit and a lead wire connected with the tab in the battery protection board in a horizontal direction or a vertical direction is smaller than a second preset distance threshold.

In order to measure more accurate temperature, the third branch and the fourth branch included in the second sub-circuit may be closer to the tab of the battery cell, that is, as shown in fig. 4, on the battery protection board, the third branch and the fourth branch are closer to the left battery cell; alternatively, as shown in fig. 4, on the battery protection plate, the third and fourth branches are close to the positive and negative electrode leads connected to the tabs in the lower battery protection plate in planar distance. In addition, when the circuit on the battery protection plate is laid out in a stacked manner in the thickness direction or in a vertical distance in the actual wiring, the third and fourth branches may be overlapped on the upper or lower layer of the positive and negative electrode leads and overlapped with the projection of the leads so as to be closer to the leads in the vertical distance.

It will be appreciated that the closer to the cell and/or the leads, the more accurately the temperature can be detected when current is flowing.

The third branch may be connected to the first branch at the first node a by a BTB connector, and the fourth branch may be connected to the second branch at the second node b by a BTB connector.

The circuit board based on the description can be connected with the first node a to collect the first voltage at the first node a; meanwhile, the voltage at the second node b can be collected by being connected with the second node b.

Alternatively, the processing chip 121 in the circuit board may be connected to the first node a, and collect the first voltage at the first node a; and meanwhile, the voltage at the second node b is collected by being connected with the second node b. And meanwhile, the collection can further ensure that the environment temperatures corresponding to the third branch and the fourth branch are the same.

Because the distance between the second sub-circuit 132 and the battery core and/or the lead wires is relatively short, when the temperature of the battery is detected by the second sub-circuit 132, the detection can be more accurate, and a more accurate temperature value can be obtained; thus, when the authenticity of the battery is determined based on the temperature, the result can be determined more accurately.

Fig. 5 to 8 show, by way of example, four structural schematic diagrams corresponding to fig. 4, respectively.

As shown in fig. 5 to 8, the first branch may include a first pull-up resistor R1, one end of the first pull-up resistor R1 is connected to the first power supply VDD1, and the other end is connected to the first node a.

It should be understood that the first branch, the third branch and the processing chip are connected to the first node a; the first pull-up resistor R1 in the first branch is used for dividing the voltage, whereby the processing chip can determine the voltage difference across the third branch by detecting the voltage at the first node a.

Fig. 5 to 8 above are only examples for a first branch, which may also comprise a plurality of resistors connected in series and/or in parallel; of course, other devices may also be included, which is not limited in this application.

As illustrated in fig. 5 to 8, the second branch may include a second pull-up resistor R2, one end of the second pull-up resistor R2 being connected to the second power supply VDD2, and the other end being connected to the second node b.

It should be understood that the second branch, the fourth branch and the processing chip are connected to the second node b; the second pull-up resistor R2 in the second branch is used for dividing the voltage, whereby the processing chip can determine the voltage difference across the fourth branch by detecting the voltage at the second node b.

Fig. 5 to 8 above are only examples for the second branch, and the first branch may also comprise a plurality of resistors connected in series and/or in parallel; of course, other devices may also be included, which is not limited in this application.

In the above two examples, the voltage levels of the first power supply VDD1 and the second power supply VDD2 may be the same or different; the resistance values of the first pull-up resistor R1 and the second pull-up resistor R2 may be the same or different, which is not limited in the present application. In the embodiment of the present application, the voltage of the first power supply VDD1 and the voltage of the second power supply VDD2 are the same, and the resistance values of the first pull-up resistor R1 and the second pull-up resistor R2 are the same.

As illustrated in fig. 5 to 8, the third branch may include a first temperature-sensitive resistor RT1, where one end of the first temperature-sensitive resistor RT1 is connected to the first node a and the other end is connected to the ground.

The first temperature-sensitive resistor RT1 may be a temperature-sensitive resistor with a negative temperature coefficient (negative temperature coefficient, NTC), a temperature-sensitive resistor with a positive temperature coefficient (positive temperature coefficient, PTC), or a temperature-sensitive resistor with another material, which is not limited in this application.

It should be noted that, when the electronic device is turned on, a current flows through the battery protection board in the battery 110, and at this time, the resistance value of the first temperature-sensitive resistor RT1 in the third branch provided on the battery protection board will change accordingly, so that the voltage at the first node a detected by the processing chip 121 will change. Because the temperature and the resistance change of the temperature-sensitive resistor have a certain mapping relationship, the processing chip 121 can determine the resistance of the first temperature-sensitive resistor at the temperature through the detected voltage at the first node a, and then can determine the temperature corresponding to the resistance through the mapping relationship. This temperature can be considered to be the temperature generated by the passage of current through the battery 110.

It should be noted that, the temperature generated by the current in the battery 110 is a main heat source, and other surrounding devices, such as an electrical core, a processing chip on a connected circuit board, and other electronic devices, generate heat in a working state, and the temperature generated by these devices can also be transferred to the vicinity of the first temperature-sensitive resistor to be used as a secondary heat source, that is, the resistance change of the first temperature-sensitive resistor is also affected by the temperature generated by other devices. The temperature detected by the processing chip through the voltage magnitude at the first node a can be considered as all temperatures near the first temperature sensitive resistor.

Alternatively, as a possible implementation manner, as shown in fig. 5, the fourth branch may include a second temperature-sensitive resistor RT2 and an ID resistor Rid, where one end of the second temperature-sensitive resistor is connected to the second node after being connected to the ID resistor in series, and the other end of the second temperature-sensitive resistor is connected to the ground.

At this time, the second voltage at the second node collected by the processing chip is the sum of the voltages of the second temperature-sensitive resistor RT2 and the ID resistor Rid.

Alternatively, as another possible implementation manner, as shown in fig. 6, the fourth branch may include a second temperature-sensitive resistor RT2 and an ID resistor Rid, where one end of the second temperature-sensitive resistor is connected to the second node after being connected to the ID resistor Rid in parallel, and the other end of the second temperature-sensitive resistor is connected to the ground.

At this time, the second voltage at the second node b collected by the processing chip is a voltage obtained by connecting the second temperature-sensitive resistor RT2 and the ID resistor Rid in parallel.

Optionally, on the basis of fig. 5, as shown in fig. 7, the fourth branch may further include a third temperature-sensitive resistor RT3, where the third temperature-sensitive resistor is connected in parallel to two ends of the second temperature-sensitive resistor RT 2.

At this time, the second voltage at the second node b collected by the processing chip is the sum of the voltage after the second temperature-sensitive resistor RT2 and the third temperature-sensitive resistor RT3 are connected in parallel and the voltage of the ID resistor Rid.

Optionally, on the basis of fig. 5, as shown in fig. 8, the fourth branch may further include a third temperature-sensitive resistor RT3, where the third temperature-sensitive resistor is connected in parallel to two ends of the ID resistor Rid.

At this time, the second voltage at the second node b collected by the processing chip is the sum of the voltage after the third temperature-sensitive resistor RT3 is connected in parallel with the ID resistor Rid and the voltage of the second temperature-sensitive resistor RT 2.

It should be understood that the second temperature-sensitive resistor and the third temperature-sensitive resistor may be NTC or PTC, and the temperature-sensitive properties of the first temperature-sensitive resistor, the second temperature-sensitive resistor and the third temperature-sensitive resistor may be arbitrarily combined, for example, RT1 is NTC, RT2 is PTC, RT3 is PTC, or RT1 is PTC, RT2 is NTC, RT3 is NTC, or RT1, RT2 and RT3 are PTC or NTC, etc., which is not limited in this application. In addition, the voltage of the grounding terminal is zero, and the grounding terminal can be changed into power supply voltages with other magnitudes.

It should be understood that in fig. 7 and 8, the position of the ID resistor Rid may also be changed, for example, may be connected between the ground terminal and the second temperature-sensitive resistor RT 2; the positions of the second temperature-sensitive resistor RT2 and the third temperature-sensitive resistor RT3 may also be exchanged, which is not limited in the present application.

It should be noted that, since the third branch and the fourth branch are both disposed on the battery protection board and are close to the battery side of the battery 110, the second temperature-sensitive resistor and the third temperature-sensitive resistor in the fourth branch are the same as the first temperature-sensitive resistor in the third branch, and are in the same environment, and correspond to the temperatures corresponding to the same environment, that is, the temperatures corresponding to the first temperature-sensitive resistor can be multiplexed into the temperatures corresponding to the second temperature-sensitive resistor and the third temperature-sensitive resistor. Therefore, after determining the temperature corresponding to the first temperature-sensitive resistor, the respective corresponding resistance values of the second temperature-sensitive resistor and the third temperature-sensitive resistor at the temperature can be determined according to the mapping relation between the temperature and the resistance values of the temperature-sensitive resistors.

It should be understood that the above is only an example of four structures, and the structures of the first branch, the second branch, the third branch, and the fourth branch may be other structures; for example, the first temperature-sensitive resistor RT1 in the third branch, the second temperature-sensitive resistor RT2 in the fourth branch and the third temperature-sensitive resistor RT3 in the fourth branch may include one or more components, for example, the third branch and the fourth branch may further include one or more other components, such as a capacitor, etc.; the present application is not limited in this regard.

Next, a battery detection method provided in the embodiment of the present application will be described by taking a circuit configuration shown in fig. 5 as an example.

Fig. 9 shows a battery detection method corresponding to fig. 5. As shown in fig. 9, the battery detection method 200 may include the following S210 to S270, which are described one by one.

S210, responding to user operation, and starting the electronic equipment.

The user operation may include, but is not limited to: long press operation for physical keys on an electronic device.

And S220, a current passes through the battery 110, and the current generates heat and is transmitted to the first temperature-sensitive resistor RT1 in the third branch and the second temperature-sensitive resistor RT2 in the fourth branch.

It should be noted that, during the startup process, there are two conditions that the current passes through the battery 110; the first refers to the case that the charger is plugged and started, if the starting current is smaller than the current provided by the charger, the battery is in a charged state, and then the current in the battery 110 is in a direction towards the battery or in a direction towards the internal current for the battery protection board; if the starting current is larger than the current provided by the charger, the battery is in a discharging state, and the battery protection plate is in the outward current flowing direction. The second refers to the case of starting without plugging the charger, and the battery is in a discharge state at this time, and the battery protection plate is in a direction of outward current.

For the above two cases of starting up the charger or starting up the charger without the charger, the battery 110 will generate current flow, and only the directions are different; thus, the current in the battery 110 will generate heat that presents an increasing trend over time; also, because the third and fourth legs of the battery detection circuit 130 are immediately adjacent to the cells of the battery 110, the heat generated can be transferred to the third and fourth legs that are very close to each other. With particular reference to fig. 5, this heat may be transferred to a first temperature-sensitive resistor RT1 in the third branch and a second temperature-sensitive resistor RT2 in the fourth branch. Here, the first temperature-sensitive resistor RT1 and the second temperature-sensitive resistor RT2 are in the same temperature environment, and thus the received heat is considered to be the same.

It should be understood that the peripheral electronic devices such as the battery core and the circuit board 120 in the battery 110 will also generate heat during operation, and this heat will also be transferred to the first temperature-sensitive resistor RT1 in the third branch and the second temperature-sensitive resistor RT2 in the fourth branch.

After the first temperature-sensitive resistor RT1 and the second temperature-sensitive resistor RT2 are heated, the resistance changes; here, the resistance value is considered to change the same by the same heat.

S230, the processing chip collects the first voltage at the first node a and the second voltage at the second node b at the same time.

Specifically, for example, at the first time t1, the processing chip may collect the first voltage at the first node a and the second voltage at the second node b simultaneously through an ADC module included in itself. Because the resistances of the first temperature-sensitive resistor RT1 and the second temperature-sensitive resistor RT2 are changed after being heated, the first voltage and the second voltage acquired by the processing chip at the moment are different from the voltage acquired before the temperature is changed.

S240, the processing chip determines the resistance value of the first temperature-sensitive resistor RT1 based on the first voltage.

For example, the voltage of the first power supply VDD1 is VL1, and at the first time t1, the first voltage is V1, and at this time, the resistance of the first temperature-sensitive resistor RT1 can be inversely calculated by the voltage division ratio.

Such as: since the voltage of the first power supply, the first voltage and the resistance value of the first pull-up resistor are all known, the resistance value of the first temperature-sensitive resistor RT1 at the current temperature can be determined based on the formula.

S250, the processing chip determines the temperature corresponding to the resistance value of the first temperature-sensitive resistor RT1 and the resistance value of the second temperature-sensitive resistor RT2 at the temperature based on the mapping relation table, wherein the temperature is the temperature of the current battery 110.

The mapping relationship table may include a first correspondence between the temperature and the resistance value of the first temperature-sensitive resistor, and a second correspondence between the temperature and the resistance value of the second temperature-sensitive resistor. When the original resistance values of the first temperature-sensitive resistor and the second temperature-sensitive resistor are the same, the first corresponding relation and the second corresponding relation are the same.

The mapping relation table can be tested, recorded and stored in the electronic equipment before delivery based on experience or early-stage test, and then, the mapping relation table can be directly obtained and inquired when detection is carried out; or the mapping relation table can be stored in the cloud, and the processing chip is firstly obtained and then used during detection; alternatively, the information may be obtained by other methods, which are not limited in this application.

For example, at the first time t1, the resistance value of the first temperature-sensitive resistor is RT1, and the temperature corresponding to the first time t1 may be queried and determined to be M1 based on the first corresponding relation in the mapping relation table; then, the query is continued in the mapping relation according to the temperature M1, and the resistance value of the second temperature-sensitive resistor RT2 at the first moment t1 is determined based on the second corresponding relation. It should be understood that the first temperature-sensitive resistor RT1 and the second temperature-sensitive resistor RT2 are in the same environment, so that the determined first temperature-sensitive resistor RT1 is the temperature of the second temperature-sensitive resistor RT2, and the temperature is multiplexed when the resistance value of the second temperature-sensitive resistor RT2 is determined.

S260, the processing chip determines the resistance value of the ID resistor based on the second voltage and the resistance value of the second temperature-sensitive resistor RT 2.

For example, the voltage of the second power supply VDD2 is VL2, and at the first time t1, the second voltage is V2, at this time, the sum of the resistances of the second temperature-sensitive resistor and the ID resistor can be calculated reversely by the voltage division ratio, and then the resistance of the second temperature-sensitive resistor at the first time t1 is subtracted to determine the resistance of the ID resistor.

For example, rid=v2×r2/(VL 2-V2) -RT2, since the voltage of the second power supply, the second voltage, the second pull-up resistor, and the resistance value of the second temperature-sensitive resistor are all known, the resistance value of the ID resistor can be determined based on the formula.

S270, comparing the determined resistance value of the ID resistor with a preset resistance value of the ID resistor to determine whether the battery is an original battery.

Alternatively, as a possible implementation manner, the determined resistance value of the ID resistor may be compared with a preset resistance value of the ID resistor, and when the two resistance values are the same, the battery is determined to be an original battery; when the two are different, the battery is determined to be a non-original battery. However, this method is relatively absolute, and there is often a slight error in real detection, so that the error range can be increased in addition to the above.

Alternatively, as another possible implementation, a resistance error range may be set as the decision threshold.

For example, if the preset resistance value of the ID resistor is Rid0 and the detaR is a resistance error range, the judgment threshold may be represented as [ Rid0-detaR, rid0+detar ], then the calculated resistance value of the ID resistor may be compared with the judgment threshold, and if the calculated resistance value is within the threshold range or equal to the end value of the judgment threshold, the battery may be determined to be an original battery; if the battery does not belong to the threshold range, the battery can be determined to be a non-original battery.

Since the first temperature-sensitive resistor RT1 and the second temperature-sensitive resistor RT2 are located relatively close to each other and are almost in close proximity to each other, the influence of the heat generated by the current in the battery 110 on the first temperature-sensitive resistor RT1 and the second temperature-sensitive resistor RT2 can be said to be uniform, and therefore, the temperature determined based on the first temperature-sensitive resistor RT1 can be used as the temperature corresponding to the second temperature-sensitive resistor RT 2. Based on this, the first temperature-sensitive resistor RT1 and the second temperature-sensitive resistor RT2 are both arranged on the battery protection board, and compared with the arrangement of the first temperature-sensitive resistor RT1 and the second temperature-sensitive resistor RT2 separately, the accuracy control of the resistance value of the detection ID resistor is better.

For example, the temperature difference corresponding to the first temperature-sensitive resistor RT1 and the second temperature-sensitive resistor RT2 is within 0.1 ℃, and the corresponding resistance value fluctuates by tens of ohms, so that the detection precision can be in a level of tens of ohms by arranging the first temperature-sensitive resistor RT1 and the second temperature-sensitive resistor RT2 together when the resistance value of the ID resistor is detected. And if the first temperature-sensitive resistor RT1 and the second temperature-sensitive resistor RT2 are far away, the temperature difference will be greater than 0.1 degree, for example, 4 degrees, so that the detection precision can only be hundreds of ohms or thousands of ohms during detection, and the precision is relatively poor.

On the basis of the above, the method 200 may further comprise the steps of:

and repeatedly starting and closing the electronic equipment for a plurality of times, and repeatedly cycling the steps S210 to S270 when the electronic equipment is started for a plurality of times, and repeatedly collecting the first voltage and the second voltage corresponding to different times by the processing chip to repeatedly determine the resistance value of the ID resistance value so as to determine whether the battery is an original battery or not.

For example, the total number of the primary battery and the non-primary battery may be determined in a plurality of times, or the proportion of the primary battery may be determined as a condition of the final result. For example, 9 out of 10 determinations determine that the battery is a genuine battery, and the final result may determine that the battery is a genuine battery.

Illustratively, taking fig. 5 as an example, the voltage magnitudes of the first power supply VDD1 and the second power supply VDD2 are assumed to be 1.8V, and the resistance values of the first pull-up resistor R1 and the second pull-up resistor R2 are 100k. The first temperature-sensitive resistor RT1 and the second temperature-sensitive resistor RT2 both adopt 100k temperature-sensitive resistors (the mapping relation corresponding to the 100k temperature-sensitive resistors is shown in the following table 1), and the preset ID resistance value Rid is 30k.

TABLE 1

It should be understood that the first temperature-sensitive resistor and the second temperature-sensitive resistor are both 100k temperature-sensitive resistors, so table 1 may represent a first corresponding relationship between the resistance value of the first temperature-sensitive resistor and the temperature, or may represent a second corresponding relationship between the resistance value of the second temperature-sensitive resistor and the temperature, that is, the first corresponding relationship and the second corresponding relationship are the same.

For example, when the ambient temperature is 25 degrees, the user presses the power key to power on the electronic device. After 5 seconds, that is, when the first time is 5 seconds, the electronic device performs ADC acquisition, at this time, the temperature of the battery protection board rises by 1 degree and reaches 26 degrees due to heat generation of current, and then the resistance corresponding to 26 degrees of the first temperature-sensitive resistor RT1 can be determined by interpolation based on the two resistances of the corresponding resistance of 25 degrees and the corresponding resistance of 79.2k in the mapping relation table.

Such as: (100000-79200)/5=4160deg.C, the corresponding resistance values of the first temperature-sensitive resistor RT1 and the second temperature-sensitive resistor RT2 at 26 degrees should be 100000-4160= 95840 Ω.

The sum of the ID resistor Rid and the second temperature-sensitive resistor before the start-up is 130000, and the sum of the resistance values at the temperature is 95840+30000= 125840 Ω, and the resistance value is changed compared with the resistance value at the start-up.

Whereas at 26 degrees the voltage at the first node a is: v1= 95840/(95840+100000) ×1.8v= 0.8809V;

the voltage at the second node b is: v2= (95840+30000)/(95840+30000+100000) ×1.8v=1.0030V.

In the detection process, when the processing chip collects the first voltage as 0.8809V in the 5 th S, the formula in S240 can calculate that the resistance value of the first temperature-sensitive resistor RT1 is 95840 Ω, so that the temperature corresponding to 95840 Ω is 26 degrees and the resistance value of the second temperature-sensitive resistor RT2 is 95840 Ω under 26 degrees by querying the mapping relation table. Then, when the second voltage collected by the processing chip is 1.0030V at the 5 th s, the resistance value of the ID resistor can be calculated to be 30k, and at this time, the calculated value and the preset resistance value of the ID resistor can be used for indicating that the battery is an original battery.

In this case, the fourth branch is assumed to include the ID resistor and the normal resistor RT2 'which are combined to be 130k, assuming that the forged fourth branch does not include the second temperature sensitive resistor but is a normal resistor RT2' of 100 k. In this way, by the method of the present application, the processing chip collects the first voltage and the second voltage at the 5 th second at the same time, it should be inferred that rid+rt2 '=130k, but it should be inferred that RT2' should be 95840 Ω, rid be 130000-95840= 34160 Ω=34.16k according to the temperature of RT1, at this time, the calculated resistance value of the ID resistor is different from the preset ID resistor 30k by 4.16k, and the resistance value is different, thereby it can be determined that the battery is not an original battery.

The estimation processes of fig. 6 to 8 are similar to those described above, and the formula may be changed based on the above, and will not be described here again.

In this example, to enhance safety, it may be determined once at 5 th second, and then, at 5 th second, 15 th second, etc., voltages are collected at a plurality of times to determine whether the battery is an original battery or not, in order to improve accuracy of the result.

According to the temperature-sensitive resistor, the temperature-sensitive resistor is arranged on the battery protection plate and is close to the battery cell in the battery 110, so that the temperature-sensitive resistor is affected by heat generated by current in the battery 110, the resistance value is changed, and the resistance value of the ID resistor can be reversely calculated based on the change. The application converts unordered heat change into ordered resistance change, improves the detection precision of the resistance of the ID resistor, and further has stronger and more accurate anti-counterfeiting performance.

The method and the device are started for multiple times by setting multiple time points, and the authenticity of the battery is determined by multiple times of collection, so that multiple times of judgment can be performed based on the resistance values of the ID resistors corresponding to different times of multiple times of collection; because the heat generated by the battery 110 is different along with the time difference, the resistance values of the first temperature-sensitive resistor and the second temperature-sensitive resistor are different, and the anti-counterfeiting robustness can be improved by multiple judgment, so that the cracking difficulty is increased.

In some embodiments, if it is determined that the battery is an original battery, the processing chip may perform usage configuration on the battery, such as performing remaining power calculation, charging voltage calculation, and the like, according to the battery record data and corresponding battery manufacturer parameters existing in the electronic device.

In some embodiments, if it is determined that the battery is a non-original battery, the processing chip may perform the step of determining the battery parameter of the battery manufacturer, and perform the use configuration on the battery according to the battery manufacturer parameter and the preset parameter related to the non-original battery, which is not limited in this application.

In some embodiments, after the processing chip determines that the battery 110 is a non-genuine battery, a prompt message may also be sent to the application layer to prompt the user to go to the after-market detection point for further detection and maintenance of the battery.

Referring to fig. 10, a software architecture block diagram of an electronic device is provided in an embodiment of the present application. The electronic device software architecture shown in fig. 10 includes an application layer and a kernel layer. The application layer is provided with a power management application, and the kernel layer is provided with a device starting module and a power management module. In some embodiments, an application framework layer, a system library, and the like may be further included between the application layer and the kernel layer of the electronic device, which are not described in detail in the embodiments of the present application. As shown in fig. 10, a battery detection circuit and a battery circuit are provided in the hardware layer of the electronic device.

The device starting module is used for starting a start (start) process and calling the power management module when the electronic device starts up in response to user operation. The power management module is used for controlling the battery detection circuit and the battery circuit when the power management module is called so as to execute the battery detection method provided by the embodiment of the application.

It should be understood that the battery detection circuit may be the circuit structure shown in fig. 3 to 8, and the battery circuit may be the circuit structure shown in fig. 3 to 8, and the description thereof may be specifically referred to, which is not repeated herein.

Taking the battery detection circuit shown above and the software architecture shown in fig. 10 as an example, fig. 11 is an interaction schematic diagram provided in the embodiment of the present application.

As shown in fig. 11, (1) when the electronic device is started, the device start module of the kernel layer starts a start process. The start process invokes the power management module. The power management module is configured to execute the battery detection method provided in the embodiment of the present application, and specifically includes: (2) The power management module collects a first voltage at a first node and a second voltage at a second node in the battery detection circuit simultaneously. (3) The power management module determines the resistance of the temperature-sensitive resistor in the third branch based on the first voltage, such as the resistance of the first temperature-sensitive resistor RT1 shown in fig. 5. (4) The power management module determines the temperature corresponding to the temperature-sensitive resistor in the third branch and the resistance value of the temperature-sensitive resistor in the fourth branch under the temperature based on the mapping relation table. (5) The power management module determines the resistance value of the ID resistor in the fourth branch based on the second voltage and the resistance value of the temperature-sensitive resistor in the fourth branch. (6) The power management module compares the resistance value of the ID resistor with the preset resistance value of the ID resistor, and determines whether the battery is an original battery or a non-original battery according to the comparison result. (7) If the comparison result is the original battery, the starting module can use the original battery parameters when loading the battery parameters. (8) If the comparison result is a non-original battery, the device starting module can further continue to use the original battery parameters when loading the battery parameters so as to protect the battery.

Of course, according to the design, if the comparison result is a non-original battery, the device start module may load new battery parameters when loading battery parameters. In some embodiments, if the comparison is a non-genuine battery, the device start-up module or the power management module may notify the power management application to cause the power management application to issue a prompt.

Illustratively, fig. 12 is a prompt interface provided in an embodiment of the present application.

As shown in fig. 12, the power management application may send a prompt message in the form of a bulletin board, where the prompt message may be, for example, "your battery is a non-original battery, please check after sale in time.

Illustratively, fig. 13 is another prompt interface provided in an embodiment of the present application.

As shown in fig. 13, the power management application may send a prompt message in a manner of a drop-down notification bar resident notification, where the prompt message may be, for example, "your battery is a non-original battery, please check after sale in time.

The embodiment of the application also provides a chip, which comprises a processor and a memory, wherein the memory is used for storing a computer program; the processor is used for running the computer program to enable the electronic equipment with the chip to realize the battery detection method.

Optionally, the chip further comprises a memory, the memory is connected with the processor through a circuit or a wire, and the processor is used for reading and executing the computer program in the memory. Further optionally, the chip further comprises a communication interface, and the processor is connected to the communication interface. The communication interface is used for receiving data and/or information to be processed, and the processor acquires the data and/or information from the communication interface and processes the data and/or information. The communication interface may be an input-output interface.

The memory may be read-only memory (ROM), other types of static storage devices that can store static information and instructions, random access memory (random access memory, RAM) or other types of dynamic storage devices that can store information and instructions, electrically erasable programmable read-only memory (electrically erasable programmable read-only memory, EEPROM), compact disc read-only memory (compact disc read-only memory) or other optical disk storage, optical disk storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), magnetic disk storage media, or any other magnetic storage device that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, etc.

For example, in embodiments of the present application, the memory may store a mapping table.

The embodiment of the application also provides a chip system, which comprises a processor and a memory, wherein the memory is used for storing a computer program; the processor is used for running the computer program to enable the electronic equipment where the chip system is located to realize the battery detection method.

The embodiment of the application also provides a computer readable storage medium, wherein instructions are stored in the computer readable storage medium, and when the instructions are executed on the electronic device, the electronic device is caused to execute the battery detection method of the embodiment of the application.

The present embodiments also provide a computer program product containing instructions which, when run on a computer or any of the at least one processor, cause the computer to perform the battery detection method of the embodiments of the present application.

The electronic device, the computer storage medium, or the computer program product provided in the embodiments of the present application are configured to perform the corresponding methods provided above, and therefore, the advantages achieved by the electronic device, the computer storage medium, or the computer program product may refer to the advantages of the corresponding methods provided above, which are not described herein.

In the embodiments of the present application, "at least one" means one or more, and "a plurality" means two or more. "and/or", describes an association relation of association objects, and indicates that there may be three kinds of relations, for example, a and/or B, and may indicate that a alone exists, a and B together, and B alone exists. Wherein A, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of the following" and the like means any combination of these items, including any combination of single or plural items. For example, at least one of a, b and c may represent: a, b, c, a and b, a and c, b and c or a and b and c, wherein a, b and c can be single or multiple.

Those of ordinary skill in the art will appreciate that the various elements and algorithm steps described in the embodiments disclosed herein can be implemented as a combination of electronic hardware, computer software, and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In several embodiments provided herein, any of the functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read Only Memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely specific embodiments of the present application, and any person skilled in the art may easily conceive of changes or substitutions within the technical scope of the present application, which should be covered by the protection scope of the present application. The protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A battery detection circuit, comprising: a first sub-circuit and a second sub-circuit, the first sub-circuit comprising a first branch and a second branch, the second sub-circuit comprising a third branch and a fourth branch;

the first branch circuit and the third branch circuit are connected to a first node, the first branch circuit is used for dividing voltage, and the third branch circuit is used for detecting the temperature of the battery;

the second branch circuit and the fourth branch circuit are connected to a second node, the second branch circuit is used for dividing voltage, the fourth branch circuit is used for detecting the resistance value of an ID resistor included in the fourth branch circuit based on the temperature of the battery to determine the authenticity of the battery, the battery comprises a battery core and a battery protection board, and the second sub-circuit is positioned on the battery protection board;

the distance between the second sub-circuit and the tab of the battery core is smaller than a first preset distance threshold, and/or the distance between the second sub-circuit and the lead wire connected with the tab in the battery protection plate in the horizontal direction or the vertical direction is smaller than a second preset distance threshold.

2. The battery detection circuit of claim 1, wherein the third branch comprises a first temperature-sensitive resistor, one end of the first temperature-sensitive resistor is connected to the first node, and the other end is connected to a ground terminal.

3. The battery detection circuit according to claim 2, wherein the fourth branch further comprises a second temperature-sensitive resistor, one end of the second temperature-sensitive resistor is connected with the second node after being connected with the ID resistor in series, and the other end of the second temperature-sensitive resistor is connected with a ground terminal.

4. The battery detection circuit of claim 2, wherein the fourth branch further comprises a second temperature-sensitive resistor, one end of the second temperature-sensitive resistor is connected with the second node after being connected with the ID resistor in parallel, and the other end of the second temperature-sensitive resistor is connected with a ground terminal.

5. The battery detection circuit of claim 3, wherein the fourth branch further comprises a third temperature-sensitive resistor connected in parallel across the second temperature-sensitive resistor.

6. The battery detection circuit of claim 4, wherein the fourth leg further comprises a third temperature sensitive resistor connected in parallel across the ID resistor.

7. The battery detection circuit according to any one of claims 1, 3 to 6, wherein the first branch includes a first pull-up resistor having one end connected to a first power supply and the other end connected to the first node;

the second branch circuit comprises a second pull-up resistor, one end of the second pull-up resistor is connected with a second power supply, and the other end of the second pull-up resistor is connected with the second node.

8. The battery detection circuit of any one of claims 3 to 6, wherein the first temperature-sensitive resistor and the second temperature-sensitive resistor are positioned adjacent.

9. An electronic device comprising a battery, a circuit board, and the battery detection circuit of any one of claims 1 to 8; the battery is connected with the circuit board;

the circuit board is respectively connected with the first node and the second node of the battery detection circuit, and is used for collecting a first voltage at the first node and a second voltage at the second node, determining the temperature of the battery according to the first voltage, and determining the resistance value of the ID resistor included in the fourth branch according to the temperature and the second voltage so as to determine the authenticity of the battery;

The second sub-circuit is located on a battery protection board in the battery.

10. The electronic device of claim 9, wherein the circuit board includes a processing chip connected to the battery and to the first node and the second node of the battery detection circuit, respectively; the first sub-circuit is located on the circuit board.

11. A battery detection method, characterized in that it is applied to the electronic device according to claim 9 or 10, the method comprising:

responding to user operation, and starting up;

collecting a first voltage of a first node and a second voltage of a second node in the battery detection circuit at the same time;

determining a temperature of the battery based on the first voltage;

and determining the resistance value of the ID resistor based on the second voltage and the temperature to determine the authenticity of the battery.

12. The battery detection method of claim 11, wherein when the third branch includes a first temperature-sensitive resistor, the determining the temperature of the battery based on the first voltage includes:

determining the resistance value of a first temperature-sensitive resistor in the third branch based on the first voltage;

And inquiring a mapping relation table, and determining that the temperature corresponding to the resistance value of the first temperature-sensitive resistor is the temperature of the battery, wherein the mapping relation table comprises one-to-one correspondence relations between different resistance values and different temperatures of the first temperature-sensitive resistor.

13. The battery detection method according to claim 12, wherein when the fourth branch includes a second temperature-sensitive resistor, the determining the authenticity of the battery based on the second voltage and the temperature includes:

inquiring the mapping relation table based on the temperature, and determining the resistance value of the second temperature-sensitive resistor in the fourth branch; the mapping relation table also comprises one-to-one correspondence relation between different resistance values and different temperatures of the second temperature-sensitive resistor;

determining the resistance value of the ID resistor in the fourth branch based on the temperature and the resistance value of the second temperature-sensitive resistor;

and comparing the resistance value of the ID resistor with the preset resistance value of the ID resistor, and determining the authenticity of the battery.

14. A chip, comprising: a processor and a memory for storing a computer program; the processor is configured to execute the computer program to cause an electronic device on which the chip is located to implement the battery detection method according to any one of claims 11 to 13.

15. A computer readable storage medium, characterized in that the computer readable storage medium has stored therein a computer program which, when run on an electronic device, causes the electronic device to perform the battery detection method according to any one of the preceding claims 11 to 13.