Battery circuit, battery health degree determination method and device, equipment and storage medium

Abstract

The invention relates to a battery circuit, a battery health degree determination method and device, equipment and a storage medium. The method comprises the following steps: controlling the battery to discharge to obtain a constant-current load current generated by a constant-current discharge circuit in response to the condition that the charge state of the battery meets a predefined charge state condition; recording the load voltage when the constant load current is generated and recording the current battery temperature of the battery; determining a current electrochemical impedance of the battery based on the constant load current and the load voltage; based on the corresponding relation among the electrochemical impedance, the battery temperature and the battery health degree, the current battery health degree matched with the current battery temperature and the current electrochemical impedance is determined. According to the invention, the battery health degree of the battery can be accurately calculated.

Description

Technical Field

[0001] The present disclosure relates to the field of battery technology, and in particular to a battery circuit, a battery health determination method, device, equipment and storage medium. Background Art

[0002] During long-term use of the battery, as the internal chemical substances are irreversibly consumed and by-products are produced, the battery will age, the internal resistance of the battery will increase, and the voltage drop of the battery will be greater at the same discharge current, which will lead to an increase in the proportion of available capacity at the same discharge current.

[0003] In the related art, the battery state of health (SOH) is generally evaluated by the full charge and discharge capacity of the battery, and the battery state of health is determined based on the ratio of the full charge and discharge capacity of the aged battery to the full charge and discharge capacity of the fresh battery. However, the battery state of health determined in this way will become inaccurate as the battery ages. Summary of the invention

[0004] In order to overcome the problems existing in the related art, the present disclosure provides a battery circuit, a battery health determination method, an apparatus, a device and a storage medium.

[0005] According to a first aspect of an embodiment of the present disclosure, a method for determining a battery health is provided, comprising, in response to a charge state of a battery satisfying a predefined charge state condition, controlling the discharge of the battery to obtain a constant current load current generated by a constant current discharge circuit; recording a load voltage when the constant current load current is generated and recording a current battery temperature of the battery; determining a current electrochemical impedance of the battery based on the constant current load current and the load voltage; and determining a current battery health that matches the current battery temperature and the current electrochemical impedance based on a correspondence between electrochemical impedance, battery temperature, and battery health.

[0006] In one embodiment, the correspondence between the electrochemical impedance, the battery temperature and the battery health is determined in the following manner: at a target temperature, the battery is controlled to discharge cyclically under a charge state condition satisfying a predefined charge state condition to generate a constant current load current of a predefined frequency; during each discharge cycle n times, the electrochemical impedance of the battery is recorded, and the battery health is measured to obtain N electrochemical impedances and N battery healths, where N is an integer multiple of n, and N and n are positive integers; a correspondence between the target temperature, the N electrochemical impedances and the N battery healths is established; and the above steps are repeated to establish a plurality of correspondences between the target temperatures, the N electrochemical impedances and the N battery healths.

[0007] In one embodiment, the current battery health that matches the current battery temperature and the current electrochemical impedance is determined based on the correspondence between the electrochemical impedance, the battery temperature, and the battery health, including: determining the current target temperature having the smallest absolute difference with the current battery temperature among the multiple target temperatures; determining the target electrochemical impedance that matches the current electrochemical impedance among the N electrochemical impedances corresponding to the current target temperature, and determining the current battery health based on the battery health corresponding to the matched target electrochemical impedance.

[0008] In one embodiment, the target electrochemical impedance matching the current electrochemical impedance is determined among the N electrochemical impedances corresponding to the current target temperature, and the current battery health is determined based on the battery health corresponding to the matched target electrochemical impedance, including: if there is an electrochemical impedance consistent with the current electrochemical impedance among the N electrochemical impedances corresponding to the current target temperature, the electrochemical impedance consistent with the current electrochemical impedance is used as the target electrochemical impedance matching the current electrochemical impedance, and the battery health corresponding to the matched target electrochemical impedance is determined as the current battery health of the battery; if there is no electrochemical impedance consistent with the current electrochemical impedance among the N electrochemical impedances corresponding to the current target temperature, M electrochemical impedances with the smallest difference with the current electrochemical impedance are determined among the N electrochemical impedances as the target electrochemical impedance matching the current electrochemical impedance; based on the battery health corresponding to the M electrochemical impedances, the current battery health of the battery is interpolated.

[0009] According to a second aspect of an embodiment of the present disclosure, there is provided a battery circuit, comprising:

[0010] A battery; a constant current discharge circuit, used to control the discharge of the battery to generate a constant current load current of a predefined frequency when the charge state of the battery meets a predefined charge state condition; a processing component, used to synchronously obtain the load voltage when the constant current discharge circuit generates the constant current load current, and record the battery temperature of the battery, determine the current electrochemical impedance of the battery based on the load voltage and the constant load current, and determine the current battery health that matches the current battery temperature and the current electrochemical impedance based on the corresponding relationship between the electrochemical impedance, the battery temperature and the battery health.

[0011] In one embodiment, the battery circuit also includes a battery protection circuit, the battery protection circuit includes a fuel meter, and the constant current discharge circuit is connected to the fuel meter; when the charge state of the battery meets a predefined charge state condition, the fuel meter outputs a level signal for controlling the constant current discharge circuit to generate the constant current load current.

[0012] In one implementation, the processing component is the electricity meter.

[0013] According to a third aspect of an embodiment of the present disclosure, an electronic device is provided, comprising the battery circuit in the second aspect or any one implementation of the second aspect.

[0014] According to a fourth aspect of an embodiment of the present disclosure, a battery health determination device is provided, comprising an acquisition unit for controlling the discharge of the battery to obtain a constant current load current generated by a constant current discharge circuit in response to a charge state of the battery satisfying a predefined charge state condition; recording a load voltage when the constant current load current is generated and recording a current battery temperature of the battery; a processing unit for determining a current electrochemical impedance of the battery based on the constant current load current and the load voltage; and determining a current battery health that matches the current battery temperature and the current electrochemical impedance based on a correspondence between electrochemical impedance, battery temperature and battery health.

[0015] In one embodiment, the processing unit determines the correspondence between the electrochemical impedance, the battery temperature, and the battery health in the following manner: at a target temperature, the battery is controlled to discharge cyclically under a charge state condition that satisfies a predefined charge state condition, and a constant current load current of a predefined frequency is generated; when each discharge cycle is n times, the electrochemical impedance of the battery is recorded, and the health of the battery is measured to obtain N electrochemical impedances and N battery healths, where N is an integer multiple of n, and N and n are positive integers; a correspondence between the target temperature, the N electrochemical impedances, and the N battery healths is created; and the above steps are repeated to create a plurality of correspondences between the target temperatures, the N electrochemical impedances, and the N battery healths.

[0016] In one embodiment, the processing unit determines the current battery health that matches the current battery temperature and the current electrochemical impedance based on the correspondence between the electrochemical impedance, the battery temperature and the battery health in the following manner: determining the current target temperature having the smallest absolute difference with the current battery temperature among the multiple target temperatures; determining the target electrochemical impedance that matches the current electrochemical impedance among the N electrochemical impedances corresponding to the current target temperature, and determining the current battery health based on the battery health corresponding to the matched target electrochemical impedance.

[0017] In one embodiment, the processing unit determines a target electrochemical impedance that matches the current electrochemical impedance among the N electrochemical impedances corresponding to the current target temperature, and determines the current battery health based on the battery health corresponding to the matched target electrochemical impedance in the following manner: if there is an electrochemical impedance that is consistent with the current electrochemical impedance among the N electrochemical impedances corresponding to the current target temperature, the electrochemical impedance that is consistent with the current electrochemical impedance is used as the target electrochemical impedance that matches the current electrochemical impedance, and the battery health corresponding to the matched target electrochemical impedance is determined as the current battery health of the battery; if there is no electrochemical impedance that is consistent with the current electrochemical impedance among the N electrochemical impedances corresponding to the current target temperature, M electrochemical impedances with the smallest difference with the current electrochemical impedance are determined among the N electrochemical impedances as the target electrochemical impedance that matches the current electrochemical impedance; based on the battery health corresponding to the M electrochemical impedances, the current battery health of the battery is interpolated.

[0018] According to a fifth aspect of an embodiment of the present disclosure, a battery health determination device includes: a processor; and a memory for storing processor executable instructions; wherein the processor is configured to: execute the battery health determination method described in any one of the first aspects.

[0019] According to a sixth aspect of an embodiment of the present disclosure, a storage medium is provided, wherein instructions are stored in the storage medium. When the instructions in the storage medium are executed by a processor, the processor is enabled to execute the battery health determination method described in any one of the first aspects.

[0020] The technical solution provided by the embodiment of the present disclosure may include the following beneficial effects: the battery circuit includes a battery, a constant current discharge circuit and a processing component; the current electrochemical impedance of the battery is determined based on the constant current load current and load voltage generated by the constant current discharge circuit, and the battery health corresponding to the current temperature is matched based on the relationship between the electrochemical impedance, the battery temperature and the battery health. Through the present disclosure, the problem of inaccurate calculation of the battery health by the fuel gauge due to the increase of the internal resistance and the voltage drop caused by the aging of the battery is avoided, which leads to the increase of the available capacity of the battery, making the calculation of the battery health more accurate.

[0021] 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

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0023] Figure 1is a block diagram of a conventional battery protection circuit according to an exemplary embodiment.

[0024] Figure 2 is a block diagram showing an EIS comparison between a new battery and an old battery according to an exemplary embodiment.

[0025] Figure 3 The figure is a flow chart of a method for determining battery health according to an exemplary embodiment.

[0026] Figure 4 The present invention is a flow chart showing a method for determining a corresponding relationship among electrochemical impedance, battery temperature and battery health according to an exemplary embodiment.

[0027] Figure 5 The figure is a flow chart showing a method for determining the current battery health according to an exemplary embodiment.

[0028] Figure 6 is a flow chart showing a method for determining current battery health according to yet another exemplary embodiment.

[0029] Figure 7 The invention is a block diagram of a battery circuit for measuring battery health according to an exemplary embodiment.

[0030] Figure 8 The invention is a block diagram of a protection circuit for measuring battery health according to an exemplary embodiment.

[0031] Fig. 9 The figure is a block diagram of a device for determining battery health according to an exemplary embodiment.

[0032] Fig.10 The invention is a block diagram of a device for determining battery health according to an exemplary embodiment.

[0033] Fig.11 The invention is a block diagram showing a device for determining battery health according to an exemplary embodiment. DETAILED DESCRIPTION

[0034] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present disclosure.

[0035] The embodiments of the present disclosure are applied to battery health detection scenarios.

[0036] In related technologies, such as Figure 1As shown in the block diagram of a conventional battery protection circuit, the battery protection circuit is located on the battery protection board at the head of the battery, and is mainly composed of a power circuit, a protection unit and a power detection unit. The power circuit is composed of a battery cell, a precision resistor Rs, and a metal-oxide-semiconductor field-effect transistor (MOS) tube Q1 and Q2. The mainboard power management integrated circuit is connected to the positive pole ear P+ and the negative pole ear P- to charge the battery or discharge the battery to the mainboard; the protection unit is composed of a first-stage protection integrated circuit, a second-stage protection integrated circuit and peripheral resistors and capacitors C1, C2, R1, R2, R3 and R4. Overcharge and over-discharge protection and charge and discharge overcurrent protection are achieved by controlling the conduction and disconnection of the MOS tubes Q1 and Q2. The power detection unit is composed of a power meter and its peripheral resistors and capacitors C3, C4, R5, R6, R7, R8, R9, R10 and NTC components. The power detection unit calculates the power by detecting the voltage of the precision resistor and the voltage of the battery cell. The power meter can also record information such as the battery health (State of Health, SOH), the number of battery charge and discharge cycles (cycle count), the maximum charge and discharge current, the highest voltage, the lowest voltage, and the ambient temperature rise. At the same time, the power meter has an encryption algorithm, and the whole machine determines whether it is an official battery by matching the encrypted information of the power meter. The positive pole tab P+, the negative pole tab P-, and the bus control terminals D and C are all electrically connected to the mainboard through the connector.

[0037] like Figure 1 As shown in , the first-stage protection integrated circuit and the second-stage protection integrated circuit in the protection module have the same structure and wiring pins, and have similar wiring methods. Among them, the protection integrated circuit is composed of an overvoltage monitor, a circuit break detection circuit, a reference voltage source, an oscillation circuit, a counter circuit, a logic circuit, etc. VDD1 and VDD2 are both digital power pins, VSS1 and VSS2 are both digital ground pins, and the protection integrated circuit is powered by the power received by the digital power pin to maintain operation; CS1 and CS2 are both current monitoring pins, V1- and V2- are both charger negative electrode potential input pins, and the battery current is monitored through the current monitoring pin during the battery charging and discharging process. COUT1 and COUT2 are overcharge detection output pins, and DOUT1 and DOUT2 are overdischarge detection pins. During the battery charging and discharging process, after the battery current is abnormal, the overcharge detection output pin or the overdischarge detection pin controls the on and off of the corresponding metal half field effect transistor to achieve battery overcharge and overdischarge protection and charge and discharge overcurrent protection.

[0038] like Figure 1As shown, the power detection unit, i.e., the fuel gauge, is directly connected to the power circuit of the protection module, and is connected to the mainboard and the battery cell through the power circuit. The fuel gauge includes multiple pins, each of which has different functions. Among them, SDA (synchronous Data Adapter) / HDQ (single-wire communication protocol) is a serial data line, and SCL is a serial clock line. The two are control bus pins, which are connected to the bus control terminal on the mainboard, so that the battery control integrated circuit of the terminal controls the fuel gauge to perform the function of monitoring and storing battery information. VSS is a digital ground pin. BAT is a power supply pin, which is connected to the positive pole ear P+ of the mainboard and is used to power the fuel gauge. SRP and SRN are current sampling pins, wherein the SRP pin is grounded, and the SRN pin is connected to the current monitoring pin in the protection integrated circuit to obtain the battery current; TS is a temperature monitoring pin, which is connected to the thermistor NTC, and the battery temperature is obtained by monitoring the resistance of the thermistor; BAT-SNS is a voltage sampling pin, which is used to monitor the battery voltage. CE is an enable pin, which is used to keep the fuel gauge working and detect the battery.

[0039] The current definition of battery health SOH is SOH = Q (old) / Q (new), where Q (old) is the full charge and discharge capacity of the aged battery, and Q (new) is the full charge and discharge capacity of a fresh battery. However, when used in a whole machine environment, the shutdown voltage of the whole machine (usually 3.4V) is higher than the full discharge voltage of the battery (usually 3.0V), resulting in the fuel gauge being unable to obtain the true full discharge capacity of the battery. Therefore, the fuel gauge cannot accurately calculate the battery SOH. As the internal resistance of the battery increases with aging, the voltage drop of the battery is greater under the same discharge current. Therefore, the proportion of available capacity between 3.4V and 3.0V under the same discharge current will also increase, thereby exacerbating the inaccurate calculation of the fuel gauge SOH.

[0040] In view of this, the present disclosure proposes a method for determining battery health through electrochemical impedance.

[0041] Studies have shown that the purpose of EIS (Electrochemical Impedance Spectroscopy) research is to find out which resistance is dominant in the lithium ion insertion and extraction process (electrode polarization process), that is, what is the key step that determines the internal resistance of the battery and the growth trend of each resistance in the long-term charge and discharge cycle process, and to provide the key factors affecting the electrochemical performance of lithium-ion batteries (such as rate, cycle stability and capacity, etc.), and then propose methods to improve the electrochemical performance of batteries, and at the same time provide electrochemical parameters that can be used to analyze SOC (State Of Charge) and SOH (State Of Health). Figure 2As shown in the figure, after multiple cycles, the ohmic internal resistance Rs of lithium-ion batteries changes little; while the electrochemical resistance Rct representing the charge transfer process increases significantly. This solution can use a fixed frequency to measure Rct at a fixed charge to determine the battery's health SOH. In addition, studies have shown that the electrochemical impedance Rct changes more slowly in the intermediate SOC range, and when the SOC is greater than 0.8 and less than 0.3, Rct increases significantly. Rct is usually measured in the medium frequency range (1 to 100 Hz).

[0042] In order to measure Rct more accurately, the solution can set a predefined charge state and a predefined frequency, fix the predefined charge state between 0.3 and 0.8, fix the predefined frequency between 40 and 80 Hz, and test under the condition that the load current is Ic.

[0043] The constant current load current and load voltage are measured at fixed values ​​to determine the electrochemical impedance and battery health. Based on the corresponding relationship among the electrochemical impedance, battery temperature and battery health, the current battery health that matches the current battery temperature and the current electrochemical impedance is determined.

[0044] In view of this, an embodiment of the present disclosure provides a method for determining battery health. The method for determining battery health is applied to an electronic device of a battery circuit, such as a terminal.

[0045] Figure 3 FIG. 1 is a flow chart showing a method for determining battery health according to an exemplary embodiment. Figure 3 As shown, the method comprises the following steps:

[0046] In step S11 , in response to the state of charge of the battery satisfying a predefined state of charge condition, the battery is controlled to discharge to obtain a constant current load current generated by a constant current discharge circuit.

[0047] In the embodiment of the present disclosure, the predefined charge state is a charge state between a first residual charge and a second residual charge, for example, between 0.3 and 0.8, and the load current can be obtained by I(t)=I(t+1 / m), and the duration is 30s. At this time, the load current is a periodic current. Wherein, t is the duration, 1 / m is the period, and I(t) is the current generated in the period during the duration.

[0048] In step S12, the load voltage when the constant current load is generated is recorded and the current battery temperature of the battery is recorded.

[0049] In the disclosed embodiment, the fuel meter simultaneously records the fluctuation of the load voltage when the load current exists, U(t)=U(t+1 / m+a), and records the battery temperature at this time, which is the current battery temperature. Where t is the duration, 1 / m is the period, and a is the delay time.

[0050] In step S13, the present electrochemical impedance of the battery is determined based on the constant load current and the load voltage.

[0051] In the embodiment of the present disclosure, time-frequency transformation is performed based on the load voltage U(t) and load current I(t) recorded by the fuel meter to obtain U(ω) and I(ω) respectively, and then the electrochemical impedance = |U(ω) / I(ω)| is obtained.

[0052] Among them, the time-frequency transformation can convert the time domain signal into the frequency domain signal, that is, convert the discrete current value into a continuous function in the frequency domain. The electrochemical impedance is calculated by the ratio of the converted U(ω) and I(ω) to improve the accuracy.

[0053] In step S14 , based on the corresponding relationship among the electrochemical impedance, the battery temperature and the battery health, the current battery health matching the current battery temperature and the current electrochemical impedance is determined.

[0054] In the disclosed embodiment, the corresponding relationship among the electrochemical impedance, the battery temperature and the battery health may be predetermined.

[0055] Among them, in the embodiment of the present disclosure, based on the battery circuit involved in the above embodiment, the constant current discharge circuit 12 can be controlled to generate a constant current load current at different temperatures, and the battery health and electrochemical impedance can be detected to determine the corresponding relationship between the electrochemical impedance, battery temperature and battery health.

[0056] In the following embodiments of the present disclosure, the implementation process of the correspondence between the electrochemical impedance, battery temperature and battery health is described.

[0057] In the disclosed embodiment, multiple target temperatures may be set. For example, M target temperatures may be set, such as 0°C, 25°C, and 50°C. The corresponding relationship between the electrochemical impedance, the battery temperature, and the battery health is determined for each of the multiple target temperatures.

[0058] Among them, the manner of determining the correspondence between electrochemical impedance and battery health at each target temperature of multiple different target temperatures in the embodiment of the present disclosure is the same. The following is an implementation process for creating the correspondence between electrochemical impedance, battery temperature and battery health at a certain target temperature.

[0059] Figure 4 FIG. 1 is a flow chart showing a method for determining the corresponding relationship between electrochemical impedance, battery temperature and battery health according to an exemplary embodiment. Figure 4 As shown, the method comprises the following steps:

[0060] In step S21, at the target temperature, the battery is controlled to discharge cyclically under the condition that the state of charge of the battery satisfies a predefined state of charge, so as to generate a constant current load current of a predefined frequency.

[0061] Under the conditions of satisfying a predefined charge state (for example, any number between 0.3 and 0.8) and a predefined frequency (for example, any number between 40 and 80), the electrochemical impedance is recorded once at each temperature and every n discharge cycles, and the battery health corresponding to the battery is measured once.

[0062] In step S22, when the battery is discharged n times in each cycle, the electrochemical impedance of the battery is recorded and the health of the battery is measured to obtain N electrochemical impedances and N battery healths, where N is an integer multiple of n, and N and n are positive integers.

[0063] In the disclosed embodiment, the electrochemical impedance is recorded once and the battery health is measured once every n discharge cycles, wherein the electrochemical impedance can be recorded as the target electrochemical impedance.

[0064] In step S23 , a correspondence between the target temperature, N electrochemical impedances, and N battery health states is created.

[0065] It is understandable that the embodiments of the present disclosure can be respectively implemented as above for different target temperatures. Figure 6 The method steps shown respectively determine the corresponding relationship between the target temperature, N electrochemical impedances, and N battery health states. In other words, the above steps are repeated to create a corresponding relationship between multiple target temperatures, N electrochemical impedances, and N battery health states.

[0066] In one example, the available battery cells can be set to record the electrochemical impedance once every 50 cycles and measure the battery health of the battery once under the conditions of the charge state between 0.3 and 0.8 and the frequency between 40 and 80 Hz in the environment of 0°C, 25°C, and 50°C, 20 at each temperature, and a total of 1000 cycles at each temperature. That is, 20 electrochemical impedances and 20 battery health values ​​are recorded at each temperature, and N is 20 in this example. After the statistics of the electrochemical impedance and battery health corresponding to each temperature are completed, the recorded data is stored in the fuel gauge. In this way, a corresponding relationship can be formed with the electrochemical impedance measured after adding the constant current load chip, and the battery health of the current battery can be obtained by mathematical conversion to increase the accuracy.

[0067] Based on the above embodiments, in the embodiments of the present disclosure, for a certain target temperature, multiple electrochemical impedances and multiple battery healths may be included. There is a corresponding relationship between each electrochemical impedance and the battery health. That is, the corresponding relationship between multiple electrochemical impedances and multiple battery healths at the same target temperature.

[0068] Among them, when determining the battery health, the current battery temperature can be determined, and then based on the current battery temperature, a temperature that is relatively close to the current battery temperature can be determined from multiple predetermined target temperatures, and the correspondence between multiple electrochemical impedances corresponding to the determined temperature and multiple battery healths can be used to determine the electrochemical impedance and battery health.

[0069] Figure 5 FIG. 1 is a flow chart showing a method for determining the current battery health according to an exemplary embodiment. Figure 5 As shown, the method comprises the following steps:

[0070] In step S31 , a current target temperature having a minimum absolute difference from the current battery temperature is determined among a plurality of target temperatures.

[0071] In one example, if the current battery temperature is 35°C, and the target temperatures are 0°C, 25°C, and 50°C, the absolute differences between the current temperature and the three target temperatures are 35°C, 10°C, and 15°C. It can be seen that 10°C is the smallest value among the three values, so the corresponding 25°C is selected as the current target temperature.

[0072] In step S32, a target electrochemical impedance matching the current electrochemical impedance is determined among the N electrochemical impedances corresponding to the current target temperature, and the current battery health is determined based on the battery health corresponding to the matched target electrochemical impedance.

[0073] In one example, if the battery temperature is 35°C, 25°C is selected as the current target temperature because the absolute value of the difference between 35°C and 25°C is the smallest. Also, 20 electrochemical impedance and battery health values ​​corresponding to the 25°C environment have been stored in the fuel gauge, so the current electrochemical impedance can be matched with the electrochemical impedance and battery health stored in the fuel gauge for calculation.

[0074] It can be understood that the embodiment of the present disclosure calculates the battery health by matching the corresponding relationship, thereby ensuring that the battery health can be accurately measured in any environment.

[0075] Figure 6 FIG. 1 is a flow chart showing a method for determining the current battery health according to another exemplary embodiment. Figure 6 As shown, the method comprises the following steps:

[0076] In step S41, a target electrochemical impedance matching the current electrochemical impedance is determined among the N electrochemical impedances corresponding to the current target temperature, and the current battery health is determined based on the battery health corresponding to the matched target electrochemical impedance.

[0077] In step S42a, it is determined that among the N electrochemical impedances corresponding to the current target temperature, there is an electrochemical impedance that is consistent with the current electrochemical impedance.

[0078] In one example, if the current electrochemical impedance is 5 mohm, and among the N electrochemical impedances stored in the electrical meter, there is an electrochemical impedance with a value of 5 mohm, which is the electrochemical impedance that is consistent with the current electrochemical impedance.

[0079] In step S43a, the electrochemical impedance consistent with the current electrochemical impedance is used as the target electrochemical impedance that matches the current electrochemical impedance, and the battery health corresponding to the matched target electrochemical impedance is determined as the current battery health of the battery.

[0080] In one example, if there is an electrochemical impedance in the fuel gauge that is consistent with the current electrochemical impedance, then the current battery health corresponding to the current electrochemical impedance is the battery health corresponding to the matched target electrochemical impedance stored in the fuel gauge.

[0081] In step S42b, it is determined that among the N electrochemical impedances corresponding to the current target temperature, there is no electrochemical impedance that is consistent with the current electrochemical impedance.

[0082] In step S43b, M electrochemical impedances having the smallest difference with the current electrochemical impedance are determined among the N electrochemical impedances as target electrochemical impedances matching the current electrochemical impedance.

[0083] In one example, if the current electrochemical impedance is measured to be 5mohm, and there is no electrochemical impedance of 5mohm in the electrical meter, M electrochemical impedances with the smallest difference from the current electrochemical impedance can be selected. For example, the electrochemical impedances of 4mohm at 200 cycles and 6mohm at 250 cycles in the electrical meter can be selected for calculation.

[0084] In step S44, the current battery health of the battery is interpolated based on the battery health corresponding to the M electrochemical impedances.

[0085] In one example, if the electrochemical impedance values ​​stored in two fuel gauges have been selected and the corresponding battery health has been retrieved, the current battery health can be calculated by interpolation. For example, when the battery temperature is 35°C and the battery power is 60%, it is in a static state. The fuel gauge uses a 50Hz pulse to control the load chip to operate. The current of the load chip is 10mA, and the measured electrochemical impedance = 5mohm. Since 35°C is close to 25°C, the fuel gauge selects the electrochemical impedance and battery health measured by the battery cell at 25°C for calculation. The electrochemical impedance of the 25°C battery cell at 200 cycles = 4mohm, and the battery health = 98%, and the electrochemical impedance at 250 cycles = 6mohm, and the battery health = 97%. When the fuel gauge interpolates the electrochemical impedance = 5mohm, the battery health = 98%-(98%-97%)*(5-4) / (6-4) = 97.5%.

[0086] The embodiments of the present disclosure are based on the same concept. The embodiments of the present disclosure provide a battery circuit, in which a constant current discharge circuit is provided to provide a constant current load current to determine the electrochemical impedance of the battery, and further determine the health of the battery.

[0087] Figure 7 FIG. 1 is a block diagram of a battery circuit for measuring battery health according to an exemplary embodiment. Figure 7 As shown, the battery circuit 10 in the embodiment of the present disclosure includes a battery 11, a constant current discharge circuit 12 and a processing component 13.

[0088] The constant current discharge circuit 12 is used to control the battery to discharge so as to generate a constant current load current of a predefined frequency when the charge state of the battery 11 meets a predefined charge state condition.

[0089] In the embodiment of the present disclosure, the predefined charge is between 0.3 and 0.8, the predefined frequency is between 40 and 80 Hz, and the load current is Ic.

[0090] The processing component 13 is used to synchronously obtain the load voltage when the constant current discharge circuit generates a constant current load current, and record the battery temperature of the battery. The current electrochemical impedance of the battery is determined based on the load voltage and the constant current load current, and the current battery health matching the current battery temperature and the current electrochemical impedance is determined based on the corresponding relationship between the electrochemical impedance, the battery temperature and the battery health.

[0091] In one implementation of the embodiment of the present disclosure, the processing component 13 may be any component that can control the constant current discharge circuit to generate or not generate a constant current load current.

[0092] For example, in one embodiment, the processing component 13 may be a control mainboard of a battery. In another embodiment, the processing component 13 may be a power meter.

[0093] The battery circuit also includes a battery protection circuit. The battery protection circuit can be, for example, Figure 1 The battery protection circuit shown. In one embodiment, the battery protection circuit includes a fuel gauge. The constant current discharge circuit 12 is connected to the fuel gauge, and the fuel gauge controls the constant current discharge circuit. For example, the constant current discharge circuit is controlled to generate a constant current discharge current. Or the constant current discharge current is stopped.

[0094] In one implementation, the constant current discharge circuit may be a constant current load chip.

[0095] Figure 8 is a block diagram of a protection circuit for measuring battery health according to an exemplary embodiment. Figure 8 As shown, the battery circuit structure includes a battery protection circuit and a constant current load chip. The constant current load chip is connected to the fuel gauge in the battery protection circuit.

[0096] Among them, the constant current load chip includes multiple pins, each pin has different functions. Among them, VDD is the digital power pin, VSS is the digital ground pin, and lin is the bus connected to the positive pole ear P+ and the resistor. The chip can load a fixed current Ic during normal operation to ensure constant current power generation. Ic is at the mA level to prevent the power from dropping too quickly and avoid affecting the user experience and use.

[0097] The constant current discharge circuit is controlled to generate a level signal of a constant current load current through the output of the fuel gauge PULS port when the charge state of the battery meets the predefined charge state condition. The fuel gauge synchronously records the load voltage, and the electrochemical impedance is measured by the ratio of the constant current load current to the load voltage.

[0098] For example, when the fuel gauge detects that the charge state is between 0.3 and 0.8 and is in a non-charge and discharge state, the fuel gauge PULS port generates a high-level pulse with a frequency of 40 to 80 Hz, and the load current Ic successively generates a load current at the corresponding frequency, records the load current over a period of time, and synchronously obtains the load voltage. At this time, the load current is a periodic current. After the obtained load current and load voltage are transformed in time and frequency, the electrochemical impedance is determined by the ratio of the load current to the load voltage. Based on the relationship between electrochemical impedance, battery temperature, and battery health, the current battery health is matched with the current battery temperature and the current electrochemical impedance.

[0099] It can be understood that in the embodiment of the present disclosure, by adding a constant current load chip to the original battery protection circuit, the electrochemical impedance of the battery can be determined. The battery circuit structure is simple, making it easier to obtain results during the entire operation process and having strong operability.

[0100] Based on the same concept, the embodiments of the present disclosure further provide an electronic device, which includes the battery circuit in the above embodiment or any one of the implementation modes of the above embodiment.

[0101] Based on the above embodiments, the embodiments of the present disclosure can add a constant current load chip to the battery protection circuit to control the battery to generate a constant current load current, and then obtain the electrochemical impedance based on the constant current load current and the load voltage through time-frequency transformation, and match the current battery temperature and the current electrochemical impedance based on the correspondence between the electrochemical impedance, the battery temperature and the battery health to determine the battery health. In this way, since the electrochemical impedance can reflect the degree of battery aging, the battery health determination method provided by the embodiments of the present disclosure can take the battery aging degree into account, thereby making the calculation of the battery health more accurate.

[0102] Based on the same concept, an embodiment of the present disclosure also provides a device for determining battery health.

[0103] It is understandable that in order to achieve the above functions, the battery health determination device provided in the embodiment of the present disclosure includes hardware structures and / or software modules corresponding to the execution of each function. In combination with the units and algorithm steps of the various examples disclosed in the embodiment of the present disclosure, the embodiment of the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the technical solution of the embodiment of the present disclosure.

[0104] Fig. 9 FIG. 1 is a block diagram of a device for determining battery health according to an exemplary embodiment. Fig. 9 The device 100 includes an acquisition unit 101 and a processing unit 102.

[0105] The acquisition unit 101 is used to control the battery discharge to obtain the constant current load current generated by the constant current discharge circuit in response to the battery charge state meeting the predefined charge state condition; record the load voltage when the constant current load current is generated and record the current battery temperature of the battery.

[0106] The processing unit 102 is used to determine the current electrochemical impedance of the battery based on the constant current load current and the load voltage; based on the corresponding relationship between the electrochemical impedance, the battery temperature and the battery health, determine the current battery health that matches the current battery temperature and the current electrochemical impedance.

[0107] In one embodiment, the processing unit 102 determines the correspondence between the electrochemical impedance, the battery temperature, and the battery health in the following manner: at a target temperature, the battery is controlled to discharge cyclically under a charge state condition that satisfies a predefined charge state, and a constant current load current of a predefined frequency is generated; when each discharge cycle is n times, the electrochemical impedance of the battery is recorded, and the battery health is measured to obtain N electrochemical impedances and N battery healths, where N is an integer multiple of n, and N and n are positive integers; a correspondence between the target temperature, the N electrochemical impedances, and the N battery healths is created; and the above steps are repeated to create a correspondence between multiple target temperatures, N electrochemical impedances, and N battery healths.

[0108] In another embodiment, the processing unit 102 determines the current battery health that matches the current battery temperature and the current electrochemical impedance based on the correspondence between the electrochemical impedance, the battery temperature and the battery health in the following manner: determining the current target temperature having the smallest absolute difference with the current battery temperature among multiple target temperatures; determining the target electrochemical impedance that matches the current electrochemical impedance among the N electrochemical impedances corresponding to the current target temperature, and determining the current battery health based on the battery health corresponding to the matched target electrochemical impedance.

[0109] In another embodiment, the processing unit 102 determines a target electrochemical impedance that matches the current electrochemical impedance among the N electrochemical impedances corresponding to the current target temperature, and determines the current battery health based on the battery health corresponding to the matched target electrochemical impedance in the following manner: if there is an electrochemical impedance that is consistent with the current electrochemical impedance among the N electrochemical impedances corresponding to the current target temperature, the electrochemical impedance that is consistent with the current electrochemical impedance is used as the target electrochemical impedance that matches the current electrochemical impedance, and the battery health corresponding to the matched target electrochemical impedance is determined as the current battery health of the battery; if there is no electrochemical impedance that is consistent with the current electrochemical impedance among the N electrochemical impedances corresponding to the current target temperature, M electrochemical impedances with the smallest difference with the current electrochemical impedance are determined among the N electrochemical impedances as the target electrochemical impedances that match the current electrochemical impedance; based on the battery health corresponding to the M electrochemical impedances, the current battery health of the battery is interpolated.

[0110] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0111] Fig.101 is a block diagram of an apparatus 200 for determining battery health according to an exemplary embodiment. For example, the apparatus 200 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.

[0112] Reference Fig.10 , the device 200 may include one or more of the following components: a processing component 202 , a memory 204 , a power component 206 , a multimedia component 208 , an audio component 210 , an input / output (I / O) interface 212 , a sensor component 214 , and a communication component 216 .

[0113] The processing component 202 generally controls the overall operation of the device 200, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 202 may include one or more processors 220 to execute instructions to perform all or part of the steps of the above-described method. In addition, the processing component 202 may include one or more modules to facilitate interaction between the processing component 202 and other components. For example, the processing component 202 may include a multimedia module to facilitate interaction between the multimedia component 208 and the processing component 202.

[0114] The memory 204 is configured to store various types of data to support operations on the device 200. Examples of such data include instructions for any application or method operating on the device 200, contact data, phone book data, messages, pictures, videos, etc. The memory 204 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0115] The power component 206 provides power to the various components of the device 200. The power component 206 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the device 200.

[0116] The multimedia component 208 includes a screen that provides an output interface between the device 200 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 208 includes a front camera and / or a rear camera. When the device 200 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 rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

[0117] The audio component 210 is configured to output and / or input audio signals. For example, the audio component 210 includes a microphone (MIC), and when the device 200 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 204 or sent via the communication component 216. In some embodiments, the audio component 210 also includes a speaker for outputting audio signals.

[0118] I / O interface 212 provides an interface between processing component 202 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: a home button, a volume button, a start button, and a lock button.

[0119] The sensor assembly 214 includes one or more sensors for providing various aspects of the status assessment of the device 200. For example, the sensor assembly 214 can detect the open / closed state of the device 200, the relative positioning of components, such as the display and keypad of the device 200, the sensor assembly 214 can also detect the position change of the device 200 or a component of the device 200, the presence or absence of user contact with the device 200, the orientation or acceleration / deceleration of the device 200 and the temperature change of the device 200. The sensor assembly 214 can include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 214 can also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 214 can also include an accelerometer, a gyroscope sensor, a magnetic sensor, a pressure sensor or a temperature sensor.

[0120] The communication component 216 is configured to facilitate wired or wireless communication between the device 200 and other devices. The device 200 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 216 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 216 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0121] In an exemplary embodiment, the apparatus 200 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors or other electronic components to perform the above method.

[0122] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 204 including instructions, and the instructions can be executed by the processor 220 of the device 200 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.

[0123] Fig.11 1 is a block diagram of a device 1900 for determining battery health according to an exemplary embodiment. For example, the device 1900 may be provided as a server. Fig.11 , the apparatus 1900 includes a processing component 1922, which further includes one or more processors, and a memory resource represented by a memory 1932 for storing instructions, such as an application, that can be executed by the processing component 1922. The application stored in the memory 1932 may include one or more modules, each corresponding to a set of instructions. In addition, the processing component 1922 is configured to execute instructions to perform the above method.

[0124] The device 1900 may also include a power supply component 1926 configured to perform power management of the device 1900, a wired or wireless network interface 1950 configured to connect the device 1900 to a network, and an input / output (I / O) interface 1958. The device 1900 may operate based on an operating system stored in the memory 1932, such as Windows Server™, MacOS X™, Unix™, Linux™, FreeBSD™, or the like.

[0125] It is to be understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include plural forms, unless the context clearly indicates other meanings.

[0126] It is further understood that the terms "first", "second", etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not indicate a specific order or degree of importance. In fact, the expressions "first", "second", etc. can be used interchangeably. For example, without departing from the scope of the present disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

[0127] It can be further understood that, unless otherwise specified, “connection” includes a direct connection without other components between the two, and also includes an indirect connection with other components between the two.

[0128] It is further understood that, although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood as requiring the operations to be performed in the specific order shown or in a serial order, or requiring the execution of all the operations shown to obtain the desired results. In certain environments, multitasking and parallel processing may be advantageous.

[0129] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any modifications, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary technical means in the art that are not disclosed in the present disclosure.

[0130] It should be understood that the present disclosure is not limited to the precise structures that have 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 disclosure is limited only by the scope of the appended claims.

Claims

1. A method for determining battery health, characterized in that: include: In response to a state of charge of the battery satisfying a predefined state of charge condition, controlling the battery to discharge in order to obtain a constant current load current generated by a constant current discharge circuit; recording the load voltage when the constant current load is generated and recording the current battery temperature of the battery; determining a current electrochemical impedance of the battery based on the constant load current and the load voltage; Based on the corresponding relationship among the electrochemical impedance, the battery temperature and the battery health, a current battery health matching the current battery temperature and the current electrochemical impedance is determined.

2. The method according to claim 1, characterized in that The corresponding relationship between the electrochemical impedance, battery temperature and battery health is determined in the following manner: At a target temperature, controlling the battery to discharge cyclically under a condition that a charge state of the battery satisfies a predefined charge state, so as to generate a constant current load current of a predefined frequency; When the battery is discharged n times in each cycle, the electrochemical impedance of the battery is recorded, and the health of the battery is measured to obtain N electrochemical impedances and N battery healths, where N is an integer multiple of n, and N and n are positive integers; Creating a corresponding relationship among the target temperature, the N electrochemical impedances, and the N battery health states; The above steps are repeatedly performed to create corresponding relationships among the multiple target temperatures, the N electrochemical impedances, and the N battery health states.

3. The method according to claim 2, characterized in that The determining, based on the correspondence between the electrochemical impedance, the battery temperature, and the battery health, a current battery health that matches the current battery temperature and the current electrochemical impedance includes: Determining, among the plurality of target temperatures, a current target temperature having a minimum absolute difference with the current battery temperature; A target electrochemical impedance matching the current electrochemical impedance is determined among the N electrochemical impedances corresponding to the current target temperature, and the current battery health is determined based on the battery health corresponding to the matched target electrochemical impedance.

4. The method according to claim 3, characterized in that The step of determining a target electrochemical impedance matching the current electrochemical impedance among the N electrochemical impedances corresponding to the current target temperature, and determining the current battery health based on the battery health corresponding to the matched target electrochemical impedance, includes: If there is an electrochemical impedance consistent with the current electrochemical impedance among the N electrochemical impedances corresponding to the current target temperature, the electrochemical impedance consistent with the current electrochemical impedance is used as the target electrochemical impedance matching the current electrochemical impedance, and the battery health corresponding to the matched target electrochemical impedance is determined as the current battery health of the battery; If there is no electrochemical impedance consistent with the current electrochemical impedance among the N electrochemical impedances corresponding to the current target temperature, then determining M electrochemical impedances with the smallest difference from the current electrochemical impedance among the N electrochemical impedances as target electrochemical impedances matching the current electrochemical impedance; Based on the battery healths corresponding to the M electrochemical impedances, the current battery health of the battery is obtained by interpolation.

5. A battery circuit device, characterized in that: include: Battery; A constant current discharge circuit, used for controlling the battery to discharge so as to generate a constant current load current of a predefined frequency when the charge state of the battery meets a predefined charge state condition; A processing component is used to synchronously obtain the load voltage when the constant current discharge circuit generates the constant current load current, and record the battery temperature of the battery, determine the current electrochemical impedance of the battery based on the load voltage and the constant current load current, and determine the current battery health that matches the current battery temperature and the current electrochemical impedance based on the corresponding relationship between the electrochemical impedance, the battery temperature and the battery health.

6. The battery circuit device according to claim 5, characterized in that: The battery circuit further includes a battery protection circuit, the battery protection circuit includes a fuel gauge, and the constant current discharge circuit is connected to the fuel gauge; When the charge state of the battery meets a predefined charge state condition, the fuel gauge outputs a level signal for controlling the constant current discharge circuit to generate the constant current load current.

7. The battery circuit device according to claim 6, characterized in that: The processing component is the fuel gauge.

8. An electronic device, characterized in that: A battery circuit comprising any one of claims 5 to 7.

9. A battery health determination device, characterized in that: include: an acquisition unit, configured to control the battery to discharge in response to the charge state of the battery satisfying a predefined charge state condition to acquire a constant current load current generated by a constant current discharge circuit; recording the load voltage when the constant current load is generated and recording the current battery temperature of the battery; a processing unit, configured to determine a current electrochemical impedance of the battery based on the constant load current and the load voltage; Based on the corresponding relationship among the electrochemical impedance, the battery temperature and the battery health, a current battery health matching the current battery temperature and the current electrochemical impedance is determined.

10. The device according to claim 9, wherein the processing unit determines the corresponding relationship between the electrochemical impedance, the battery temperature and the battery health in the following manner: At a target temperature, controlling the battery to discharge cyclically under a condition that a charge state of the battery satisfies a predefined charge state, so as to generate a constant current load current of a predefined frequency; When the battery is discharged n times in each cycle, the electrochemical impedance of the battery is recorded, and the health of the battery is measured to obtain N electrochemical impedances and N battery healths, where N is an integer multiple of n, and N and n are positive integers; Creating a corresponding relationship among the target temperature, the N electrochemical impedances, and the N battery health states; The above steps are repeatedly performed to create corresponding relationships among the multiple target temperatures, the N electrochemical impedances, and the N battery health states.

11. The device according to claim 10, wherein the processing unit determines the current battery health matching the current battery temperature and the current electrochemical impedance based on the corresponding relationship among the electrochemical impedance, the battery temperature and the battery health in the following manner: Determining, among the plurality of target temperatures, a current target temperature having a minimum absolute difference with the current battery temperature; A target electrochemical impedance matching the current electrochemical impedance is determined among the N electrochemical impedances corresponding to the current target temperature, and the current battery health is determined based on the battery health corresponding to the matched target electrochemical impedance.

12. The device according to claim 11, wherein the processing unit determines a target electrochemical impedance matching the current electrochemical impedance among the N electrochemical impedances corresponding to the current target temperature, and determines the current battery health based on the battery health corresponding to the matched target electrochemical impedance in the following manner: If there is an electrochemical impedance consistent with the current electrochemical impedance among the N electrochemical impedances corresponding to the current target temperature, the electrochemical impedance consistent with the current electrochemical impedance is used as the target electrochemical impedance matching the current electrochemical impedance, and the battery health corresponding to the matched target electrochemical impedance is determined as the current battery health of the battery; If there is no electrochemical impedance consistent with the current electrochemical impedance among the N electrochemical impedances corresponding to the current target temperature, then determining M electrochemical impedances with the smallest difference from the current electrochemical impedance among the N electrochemical impedances as target electrochemical impedances matching the current electrochemical impedance; Based on the battery healths corresponding to the M electrochemical impedances, the current battery health of the battery is obtained by interpolation.

13. A battery health determination device, characterized in that: include: processor; a memory for storing processor-executable instructions; Wherein, the processor is configured to: execute the battery health determination method described in any one of claims 1 to 4.

14. A storage medium, characterized in that: The storage medium stores instructions, and when the instructions in the storage medium are executed by a processor of an electronic device, the electronic device is enabled to execute the method according to any one of claims 1 to 4.

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