Battery health degree determination method and electronic equipment

Abstract

The invention discloses a battery health degree determination method and electronic equipment. The battery health degree determination method comprises the following steps: determining the number of cyclic charge and discharge times of a battery assembly; obtaining use data of the battery assembly in a target voltage range in a target detection stage, wherein the target detection stage is a stage corresponding to the cycle charging and discharging times; and determining the health degree of the battery assembly based on the cycle charging and discharging times and the use data.

Description

Technical Field

[0001] The present application relates to the field of electronic technology, and in particular to a method for determining battery health and an electronic device. Background Art

[0002] Silicon anode battery is a lithium-ion battery that uses silicon-based materials as the anode. As an emerging anode material, silicon-based materials have attracted much attention due to their theoretical specific capacity of up to 400mAh / g to 650mAh / g. Compared with graphite, silicon anode can provide greater energy storage capacity, which is of great significance for promoting the development of electronic devices such as wearable devices. However, silicon anode (also known as silicon-based anode) batteries face risks such as abnormal swelling in practical applications, making how to determine the health of battery components a research direction for technicians in this field. Summary of the invention

[0003] In view of the above problems, the present application provides a method for determining battery health and an electronic device. The specific solution is as follows:

[0004] A method for determining battery health, comprising:

[0005] Determine the number of charge and discharge cycles of the battery assembly;

[0006] Obtaining usage data of the battery assembly within a target voltage range during a target detection phase, wherein the target detection phase corresponds to the number of charge and discharge cycles;

[0007] The health of the battery assembly is determined based on the number of charge and discharge cycles and the usage data.

[0008] Optionally, obtaining usage data of the battery assembly within a target voltage range during the target detection phase includes:

[0009] Determining the detection stage of the battery assembly based on the number of charge and discharge cycles;

[0010] Detecting the cumulative number of times and the cumulative usage time of the minimum cell voltage of the battery assembly being lower than the target set voltage during the detection phase;

[0011] The target setting voltage is the minimum voltage in the target voltage range, and the target setting voltages corresponding to the battery assembly in different detection stages are the same or different.

[0012] Optionally, determining the health of the battery assembly based on the number of charge and discharge cycles and the usage data includes:

[0013] Determining a cycle factor coefficient corresponding to the battery assembly based on the number of charge and discharge cycles;

[0014] Obtaining a characterization value of usage data of the battery assembly within a target voltage range in each detection stage, wherein at least one target voltage range is correspondingly set for each detection stage;

[0015] The product of the cycle factor coefficient corresponding to each detection stage and the characterization value of the usage data is summed to obtain the health of the battery assembly.

[0016] Optionally, different detection phases correspond to different cyclic factor coefficients.

[0017] Optionally, determining the health of the battery assembly based on the number of charge and discharge cycles and the usage data includes:

[0018] If the number of charge and discharge cycles is in the first detection stage arranged along the usage time of the battery assembly, multiply the cycle factor coefficient corresponding to the detection stage and the characterization value of the usage data corresponding to the detection stage to obtain the health of the battery assembly;

[0019] If the number of charge and discharge cycles is in the Nth detection stage arranged along the usage time of the battery component, and N is greater than 1, the product of the cycle factor coefficient corresponding to the detection stage and the characterization value of the usage data corresponding to the detection stage, as well as the product of the cycle factor coefficients corresponding to each detection stage before the detection stage and the characterization value of the usage data corresponding to the detection stage are summed to obtain the health of the battery component.

[0020] Optionally, if at least two target voltage ranges are set corresponding to a detection phase, the method for obtaining the characterization value of the usage data includes:

[0021] Determine the cumulative number of times and the cumulative usage time of the minimum cell voltage of the battery assembly being lower than the target set voltage of each voltage range;

[0022] Determine a first characterization value of the cumulative number of times that the minimum cell voltage of the battery assembly is lower than the target setting voltage of each voltage range and a second characterization value of the cumulative usage time, the first characterization value being the cumulative number of times the minimum cell voltage of the battery assembly is lower than the target setting voltage / the maximum cumulative number of times the minimum cell voltage of the battery assembly can be lower than the target setting voltage, and the second characterization value being the cumulative usage time that the minimum cell voltage of the battery assembly is lower than the target setting voltage / the maximum cumulative usage time that the minimum cell voltage of the battery assembly can be lower than the target setting voltage;

[0023] The product of the first characterization value and the second characterization value corresponding to each voltage range is summed to obtain the characterization value of the usage data.

[0024] Optionally, also include:

[0025] Monitoring the cell voltage of the battery assembly;

[0026] In each detection stage, when it is monitored that the minimum cell voltage of the battery assembly is less than the target setting voltage, the cumulative number of times that the minimum cell voltage of the battery assembly is triggered to be lower than the target setting voltage is accumulated, and when the minimum cell voltage of the battery assembly is not less than the target setting voltage, the cumulative duration that the minimum cell voltage of the battery assembly is triggered to be lower than the target setting voltage is accumulated;

[0027] If the battery assembly leaves the current detection phase and enters the next detection phase, the usage data of the battery assembly in the current detection phase is stored.

[0028] Optionally, also include:

[0029] configuring an abnormal voltage range of the battery assembly based on the health of the battery assembly; and,

[0030] Based on the relationship between the monitored cell voltage of the battery assembly and the abnormal voltage range, the charging and discharging actions of the battery assembly are controlled and / or target prompt information is output.

[0031] Optionally, controlling the charging and discharging action of the battery assembly and / or outputting target prompt information based on the relationship between the monitored cell voltage of the battery assembly and the abnormal voltage range includes at least one of the following:

[0032] If the cell voltage of the battery assembly is within a first abnormal voltage range or within a second abnormal voltage range, maintaining the use state of the battery assembly, the second abnormal voltage range being smaller than the first abnormal voltage range;

[0033] If the cell voltage of the battery assembly is within a third abnormal voltage range, outputting a first prompt message to prompt a user to charge the battery assembly;

[0034] If the cell voltage of the battery assembly is within a fourth abnormal voltage range, stopping charging the battery assembly and controlling the battery assembly to discharge;

[0035] If the cell voltage of the battery assembly is within a fifth abnormal voltage range and the battery assembly is electrically connected to a power adapter, controlling the battery assembly to enter a first self-repair mode based on an interactive operation;

[0036] If the cell voltage of the battery assembly is within the sixth abnormal voltage range or within the seventh abnormal voltage range and the battery assembly is electrically connected to a power adapter, the battery assembly is controlled to enter a second self-repair mode.

[0037] An electronic device includes a device body and a battery assembly disposed on the device body, wherein the battery assembly includes a battery management chip, and the battery management chip can perform the following operations:

[0038] Determine the number of charge and discharge cycles of the battery assembly;

[0039] Obtaining usage data of the battery assembly within a target voltage range during a target detection phase, wherein the target detection phase corresponds to the number of charge and discharge cycles;

[0040] The health of the battery assembly is determined based on the number of charge and discharge cycles and the usage data. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. Throughout the accompanying drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and the originals and elements are not necessarily drawn to scale.

[0042] Figure 1 A flowchart of a method for determining battery health provided in this application;

[0043] Figure 2 It is a schematic diagram of a curve showing a change in voltage of a silicon negative electrode battery assembly as the battery assembly is used for a certain period of time, and a schematic diagram of a curve showing a change in volume expansion of a cell in a silicon negative electrode battery assembly as the battery assembly is used for a certain period of time;

[0044] Figure 3 A flowchart of a method for obtaining usage data of a battery component in a method for determining battery health provided in the present application;

[0045] Figure 4 A flowchart of another method for determining battery health provided by the present application;

[0046] Figure 5 A schematic diagram of the structure of an electronic device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the embodiments in the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0048] It is obvious to those skilled in the art that various modifications and changes can be made in this application without departing from the spirit or scope of this application. Therefore, this application is intended to cover modifications and changes of this application that fall within the scope of the corresponding claims (technical solutions claimed for protection) and their equivalents. It should be noted that the implementation methods provided in the embodiments of this application can be combined with each other without contradiction.

[0049] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0050] As described in the background technology section, silicon negative electrode (also known as silicon-based negative electrode) batteries face risks such as abnormal swelling in actual applications, making how to determine the health of battery components a research direction for technicians in this field.

[0051] It should be noted that during the use of silicon negative electrode battery components, in addition to the fact that the silicon negative electrode will produce more gas than the graphite negative electrode during normal circulation, when facing overcharging or over-discharging, the silicon negative electrode battery is also prone to abnormal gas production and other behaviors, affecting the user experience, and in severe cases may even bring product safety risks.

[0052] In view of this, an embodiment of the present application provides a method for determining battery health, such as Figure 1 As shown, the method includes:

[0053] S1: Determine the number of charge and discharge cycles of the battery assembly.

[0054] Optionally, in one embodiment of the present application, determining the number of charge and discharge cycles of the battery assembly includes: monitoring the charge and discharge of the battery assembly, and determining the current number of charge and discharge cycles of the battery assembly.

[0055] S2: Obtaining usage data of the battery assembly within a target voltage range during a target detection phase, wherein the target detection phase corresponds to the number of charge and discharge cycles.

[0056] like Figure 2 As shown, Figure 2 The figure shows a curve diagram of the change of the volume of the battery assembly with the use time of the battery assembly and a curve diagram of the change of the voltage of the battery assembly with the use time of the battery assembly. Figure 2 It can be seen that as the usage time of the battery assembly increases, the voltage of the battery assembly gradually decreases. When the voltage of the battery assembly decreases to below 2.459V, the volume of the battery assembly increases significantly as the usage time of the battery assembly increases.

[0057] It can be seen that when the battery assembly is discharged to a low voltage, the battery assembly is prone to abnormal gas production, causing the volume of the battery assembly to expand, resulting in the problem of battery bulging. As the battery assembly is used for a longer time and the voltage of the battery assembly decreases, the volume of the battery assembly expands more severely.

[0058] Therefore, in one embodiment of the present application, obtaining the usage data of the battery assembly within the target voltage range during the target detection phase includes:

[0059] S21: determining the detection stage of the battery assembly based on the number of charge and discharge cycles. It should be noted that, in this embodiment, one detection stage corresponds to one interval of charge and discharge cycles, and different detection stages correspond to different intervals of charge and discharge cycles;

[0060] S22: Detecting the cumulative number of times and the cumulative usage time of the minimum cell voltage of the battery assembly being lower than the target set voltage during the detection phase.

[0061] It should be noted that, in this embodiment, the target setting voltage is the minimum voltage in the target voltage range. It should also be noted that, in this embodiment, the target setting voltages corresponding to the battery assembly in different detection stages can be the same or different, that is, the target voltage ranges corresponding to different detection stages can be the same or different, and this application does not limit this, and it depends on the specific situation.

[0062] Optionally, in one embodiment of the present application, only one target voltage range may be set in a detection stage, or at least two target voltage ranges may be set; if at least two target voltage ranges are set in a detection stage, at least two target setting voltages are set in a detection stage. For example, the target setting voltages set in a detection stage include: 1.5V, 2.0V, 2.5V, 3.0V..., and accordingly, the target voltage range set in the detection stage includes: a first target voltage range of 1.5V~2.0V corresponding to a target setting voltage of 1.5V, a second target voltage range of 2.0V~2.5V corresponding to a target setting voltage of 2.0V, a third target voltage range of 2.5V~3.0V corresponding to a target setting voltage of 2.5V, and a fourth target voltage range corresponding to a target setting voltage of 3.0V greater than 3.0V, etc. The present application does not impose any limitation on this, and it depends on the specific circumstances.

[0063] Optionally, in one embodiment of the present application, Figure 3As shown, the method also includes: in each detection stage, monitoring the cell voltage of the battery assembly; in each detection stage, when it is monitored that the minimum cell voltage of the battery assembly is less than the target setting voltage, triggering the accumulation of the cumulative number of times that the minimum cell voltage of the battery assembly is lower than the target setting voltage, and when the minimum cell voltage of the battery assembly is not less than the target setting voltage, triggering the accumulation of the cumulative time that the minimum cell voltage of the battery assembly is lower than the target setting voltage, so as to obtain the cumulative number of times and the cumulative usage time of the minimum cell voltage of the battery assembly lower than the target setting voltage in each detection stage, that is, obtaining the usage data of the battery assembly in each detection stage.

[0064] It should be noted that, in the above embodiment, the method further includes: if the battery assembly leaves the current detection phase and enters the next detection phase, the usage data of the battery assembly in the current detection phase is stored.

[0065] Optionally, in one embodiment of the present application, the target setting voltages corresponding to the detection stages are the same. In this embodiment, the method includes:

[0066] Monitoring the cell voltage of the battery assembly;

[0067] In the first detection stage, when it is monitored that the minimum cell voltage of the battery assembly is less than the target setting voltage, the cumulative number of times that the minimum cell voltage of the battery assembly is lower than the target setting voltage is accumulated, and when the minimum cell voltage of the battery assembly is not less than the target setting voltage, the cumulative time that the minimum cell voltage of the battery assembly is lower than the target setting voltage is accumulated, until leaving the first detection stage and entering a second detection stage adjacent to the first detection stage;

[0068] If the battery assembly leaves the first detection stage and enters the second detection stage, the usage data of the battery assembly in the first detection stage is stored, and in the second detection stage, the cumulative number of times the minimum cell voltage of the battery assembly is lower than the target setting voltage and the cumulative usage time are re-counted until the detection stage corresponding to the current number of charge and discharge cycles of the battery assembly and the cumulative number of times the minimum cell voltage of the battery assembly is lower than the target setting voltage and the cumulative usage time in the previous detection stages are completed.

[0069] S3: Determine the health of the battery assembly based on the number of charge and discharge cycles and the usage data. It should be noted that in the embodiment of the present application, the health of the battery assembly can be the swelling condition of the battery cells in the battery assembly, the remaining time of the battery assembly, the service life of the battery assembly, etc. This application does not limit this, and it depends on the specific situation.

[0070] The method provided in the embodiment of the present application is described below by taking the health of the battery assembly as the swelling condition of the battery cells in the battery assembly as an example.

[0071] Optionally, in one embodiment of the present application, determining the health of the battery assembly based on the number of charge and discharge cycles and the usage data includes:

[0072] S31: Determine the cycle factor coefficient corresponding to the battery assembly based on the number of cycle charge and discharge.

[0073] Optionally, in one embodiment of the present application, determining the cycle factor coefficient corresponding to the battery assembly based on the number of cycle charge and discharge comprises:

[0074] Based on the current charge and discharge cycle number of the battery assembly, determining the charge and discharge cycle number interval in which the current charge and discharge cycle number of the battery assembly lies;

[0075] Based on the cycle charge and discharge number interval in which the current cycle charge and discharge number of the battery assembly is located, a cycle factor coefficient corresponding to the cycle charge and discharge number of the battery assembly is determined.

[0076] Optionally, in this embodiment, the electronic device stores each cycle charge and discharge number interval and its corresponding cycle impact factor. Since the more cycle charge and discharge times of the battery assembly, the greater the risk of swelling of the battery cell in the battery assembly, therefore, in one embodiment of the present application, the greater the corresponding cycle charge and discharge times in the cycle charge and discharge times interval of the battery assembly, the greater the cycle impact factor corresponding to the cycle charge and discharge times interval, for example, the cycle impact factor corresponding to the 0~50 cycle charge and discharge times interval is 0, that is, the cycle impact factor corresponding to the 0~50 cycle charge and discharge times interval is 0; the cycle impact factor corresponding to the 50~100 cycle charge and discharge times interval is 0.8, that is, the cycle impact factor corresponding to the 50~100 cycle charge and discharge times interval is 0.8; the cycle impact factor corresponding to the 100~150 cycle charge and discharge times interval is 1, that is, the cycle impact factor corresponding to the 100~150 cycle charge and discharge times interval is 1,…, the cycle impact factor corresponding to the >1000 cycle charge and discharge times interval is 1, etc., and the present application does not limit this, depending on the specific circumstances.

[0077] S32: Obtaining a characterization value of usage data of the battery assembly within a target voltage range in each detection stage, wherein one detection stage is correspondingly provided with at least one target voltage range.

[0078] Optionally, in one embodiment of the present application, a target voltage range is set corresponding to one detection stage, and obtaining the characterization value of the usage data of the battery component within the target voltage range in each detection stage includes: obtaining the characterization value of the usage data of the battery component within its target voltage range in each detection stage. In this embodiment, the characterization value of the usage data of the battery component within its target voltage range in one detection stage is: the product of a first characterization value of the cumulative number of times the minimum cell voltage of the battery component is lower than the target set voltage corresponding to the target voltage range (i.e., the minimum voltage value within the target voltage range) during the detection stage and a second characterization value of the cumulative usage time during which the minimum cell voltage of the battery component is lower than the target set voltage corresponding to the target voltage range (i.e., the minimum voltage value within the target voltage range) during the detection stage.

[0079] It should be noted that, in the above embodiment, the first characterization value = the cumulative number of times that the minimum cell voltage of the battery assembly is lower than the target setting voltage corresponding to the target voltage range (i.e., the minimum voltage value within the target voltage range) during the detection phase / the maximum cumulative number of times that the minimum cell voltage of the battery assembly can be lower than the target setting voltage corresponding to the target voltage range (i.e., the minimum voltage value within the target voltage range) during the detection phase; the second characterization value = the cumulative usage time that the minimum cell voltage of the battery assembly is lower than the target setting voltage corresponding to the target voltage range (i.e., the minimum voltage value within the target voltage range) during the detection phase / the maximum cumulative usage time that the minimum cell voltage of the battery assembly can be lower than the target setting voltage corresponding to the target voltage range (i.e., the minimum voltage value within the target voltage range) during the detection phase. Optionally, the maximum cumulative number of times that the minimum cell voltage of the battery assembly during the detection phase can be lower than the target set voltage corresponding to the target voltage range (i.e., the minimum voltage value within the target voltage range) and the maximum cumulative usage time that the minimum cell voltage of the battery assembly during the detection phase can be lower than the target set voltage corresponding to the target voltage range (i.e., the minimum voltage value within the target voltage range) can be set according to experimental results. This application does not limit this, and it depends on the specific situation.

[0080] In another embodiment of the present application, at least two target voltage ranges are correspondingly provided for one detection stage, and obtaining the characterization value of the usage data of the battery assembly within the target voltage range in each detection stage includes: obtaining the characterization value of the usage data of the battery assembly within its target voltage range in each detection stage respectively. In this embodiment, the characterization value of the usage data of the battery assembly within the target voltage range in one detection stage is: the sum of the characterization values ​​of the usage data of the battery assembly within each target voltage range in the detection stage. Among them, the characterization value of the usage data of the battery assembly within a target voltage range in one detection stage is: the product of the first characterization value of the cumulative number of times the minimum cell voltage of the battery assembly is lower than the target setting voltage corresponding to the target voltage range (i.e., the minimum voltage value within the target voltage range) in the detection stage and the second characterization value of the cumulative usage time of the minimum cell voltage of the battery assembly being lower than the target setting voltage corresponding to the target voltage range (i.e., the minimum voltage value within the target voltage range) in the detection stage; wherein, the first characterization value = the cumulative number of times the minimum cell voltage of the battery assembly is lower than the target setting voltage corresponding to the target voltage range in the detection stage The second characterization value = the cumulative number of times the minimum cell voltage of the battery assembly can be lower than the target set voltage corresponding to the target voltage range (i.e. the minimum voltage value within the target voltage range) during the detection phase / the maximum cumulative number of times the minimum cell voltage of the battery assembly can be lower than the target set voltage corresponding to the target voltage range (i.e. the minimum voltage value within the target voltage range) during the detection phase; the second characterization value = the cumulative usage time during which the minimum cell voltage of the battery assembly is lower than the target set voltage corresponding to the target voltage range (i.e. the minimum voltage value within the target voltage range) during the detection phase / the maximum cumulative usage time during which the minimum cell voltage of the battery assembly can be lower than the target set voltage corresponding to the target voltage range (i.e. the minimum voltage value within the target voltage range) during the detection phase.

[0081] It can be seen that, in this embodiment, the method for obtaining the characterization value of the usage data includes:

[0082] Determine the cumulative number of times and the cumulative usage time of the minimum cell voltage of the battery assembly being lower than the target set voltage of each voltage range;

[0083] Determine a first characterization value of the cumulative number of times that the minimum cell voltage of the battery assembly is lower than the target setting voltage of each voltage range and a second characterization value of the cumulative usage time, the first characterization value being the cumulative number of times the minimum cell voltage of the battery assembly is lower than the target setting voltage / the maximum cumulative number of times the minimum cell voltage of the battery assembly can be lower than the target setting voltage, and the second characterization value being the cumulative usage time that the minimum cell voltage of the battery assembly is lower than the target setting voltage / the maximum cumulative usage time that the minimum cell voltage of the battery assembly can be lower than the target setting voltage;

[0084] The product of the first characterization value and the second characterization value corresponding to each voltage range is summed to obtain the characterization value of the usage data.

[0085] Assuming that in a detection phase, the first characterization value of the cumulative number of times that the minimum cell voltage of the battery assembly is lower than the target setting voltage corresponding to the target voltage range (i.e., the minimum voltage value within the target voltage range) is G (V), and the second characterization value of the cumulative usage time that the minimum cell voltage of the battery assembly is lower than the target setting voltage corresponding to the target voltage range (i.e., the minimum voltage value within the target voltage range) during the detection phase is H (t), then:

[0086] If a target voltage range is set corresponding to a detection stage, the characterization value S of the usage data of the battery assembly in the detection stage is G(V1)×H(t1);

[0087] If a detection stage corresponds to m target voltage ranges, then the characterization value S of the usage data of the battery component in the detection stage is G(V1)×H(t1)+G(V2)×H(t2)+…G(Vm)×H(tm).

[0088] Assuming that the current number of charge and discharge cycles of the battery assembly is in the nth charge and discharge cycle number interval, that is, the current number of charge and discharge cycles of the battery assembly corresponds to the nth detection stage, and each detection stage is correspondingly provided with m target voltage ranges, then:

[0089] The characterization value S1 of the usage data of the battery assembly in the first detection stage = G1 (V1) × H1 (t1) + G1 (V2) × H1 (t2) + … G1 (Vm) × H1 (tm);

[0090] The characterization value S2 of the usage data of the battery assembly in the second detection stage = G1 (V1) × H2 (t1) + G2 (V2) × H2 (t2) + … G2 (Vm) × H2 (tm);

[0091] …

[0092] The characterizing value Sn of the usage data of the battery assembly in the nth detection stage is Gn(V1)×Hn(t1)+Gn(V2)×Hn(t2)+…Gn(Vm)×Hn(tm).

[0093] S33: summing the products of the cycle factor coefficients corresponding to each detection stage and the characterization value of the usage data to obtain the health of the battery assembly.

[0094] Optionally, in one embodiment of the present application, the health of the battery assembly is characterized by a risk factor of swelling of the battery assembly. In this embodiment, the product between the cycle factor coefficient corresponding to each detection stage and the characterization value of the usage data is summed to obtain the health of the battery assembly, which includes:

[0095] The product of the cycle factor coefficient corresponding to each detection stage and the characterization value of the usage data is summed to obtain the risk coefficient of swelling of the battery assembly;

[0096] The health of the battery assembly is obtained based on the risk factor of swelling of the battery assembly.

[0097] It should be noted that the higher the risk factor of swelling of the battery assembly, the lower the health of the battery assembly; conversely, the lower the risk factor of swelling of the battery assembly, the higher the health of the battery assembly. However, the present application is not limited to this, and in other embodiments of the present application, the health of the battery assembly can also be characterized by other data of the battery assembly.

[0098] The health of the battery assembly is described below using the risk factor of swelling of the battery assembly.

[0099] Optionally, in one embodiment of the present application, determining the health of the battery assembly based on the number of charge and discharge cycles and the usage data includes:

[0100] If the number of charge and discharge cycles is in the first detection stage arranged along the usage time of the battery assembly, multiply the cycle factor coefficient corresponding to the detection stage and the characterization value of the usage data corresponding to the detection stage to obtain the health of the battery assembly;

[0101] If the number of charge and discharge cycles is in the Nth detection stage arranged along the usage time of the battery component, and N is greater than 1, the product of the cycle factor coefficient corresponding to the detection stage and the characterization value of the usage data in the detection stage and the product of the cycle factor coefficients corresponding to each detection stage before the detection stage and the characterization value of the usage data are summed to obtain the health of the battery component.

[0102] Continuing with the example that the current number of charge and discharge cycles of the battery assembly is in the nth charge and discharge cycle number interval, that is, the current number of charge and discharge cycles of the battery assembly corresponds to the nth detection stage, and each detection stage corresponds to m target voltage ranges, the usage data characterization values ​​of each detection stage of the battery assembly include:

[0103] The characterization value S1 of the usage data of the battery assembly in the first detection stage = G1 (V1) × H1 (t1) + G1 (V2) × H1 (t2) + … G1 (Vm) × H1 (tm);

[0104] The characterization value S2 of the usage data of the battery assembly in the second detection stage = G1 (V1) × H2 (t1) + G2 (V2) × H2 (t2) + … G2 (Vm) × H2 (tm);

[0105] …

[0106] The characterizing value Sn of the usage data of the battery assembly in the nth detection stage is Gn(V1)×Hn(t1)+Gn(V2)×Hn(t2)+…Gn(Vm)×Hn(tm).

[0107] It should be noted that, if in the above embodiment, the cycle factor coefficient corresponding to each detection stage is represented by F, specifically, the cycle factor coefficient corresponding to the first detection stage is F1, the cycle factor coefficient corresponding to the second detection stage is F2, and so on, the cycle factor coefficient corresponding to the nth detection stage is Fn; then the risk coefficient of swelling of the battery assembly is: SF= F1S1+ F2S2+…+ FnSn=∑F(i)[Gi(v1)Hi(t1) + Gi(v2)Hi(t2) + … + Gi(vm)Hi(tm)], wherein i is any integer from 1 to n, including 1 and n.

[0108] Optionally, in one embodiment of the present application, the risk coefficient of swelling of the battery assembly ranges from 0 to 10, but the present application does not limit this and it depends on the specific circumstances.

[0109] Based on any of the above embodiments, in one embodiment of the present application, Figure 4 As shown, the method also includes:

[0110] configuring an abnormal voltage range of the battery assembly based on the health of the battery assembly; and,

[0111] Based on the monitored relationship between the cell voltage of the battery assembly and the abnormal voltage range, the charging and discharging operation of the battery assembly is controlled and / or target prompt information is output.

[0112] It should be noted that, in this embodiment, when the health status of the battery components is different, the abnormal voltage ranges of the correspondingly configured battery components may be the same or different, and this application does not impose any limitation on this, depending on the specific circumstances.

[0113] Optionally, in one embodiment of the present application, controlling the charging and discharging action of the battery assembly and / or outputting target prompt information based on the detected relationship between the cell voltage of the battery assembly and the abnormal voltage range includes:

[0114] If the cell voltage of the battery assembly is in the first abnormal voltage range or in the second abnormal voltage range, the use state of the battery assembly is maintained, and the second abnormal voltage range is smaller than the first abnormal voltage range. It should be noted that in the present embodiment, the first abnormal voltage range is the over-discharge safety voltage of the battery assembly, and the second abnormal voltage range is the surge safety voltage of the battery assembly, so as to maintain the normal use of the battery assembly when the cell voltage of the battery assembly is just overcharged or over-discharged, and no additional operation action is taken on the battery assembly. Optionally, the first abnormal voltage range is the first voltage -20mv~first voltage; the second abnormal voltage range is the second voltage~second voltage +20mv, but this application does not limit this, it depends on the specific situation. Among them, the first voltage is the minimum value of the normal working voltage range of the battery assembly, and the second voltage is the maximum value of the normal working voltage range of the battery assembly.

[0115] On the basis of any of the above embodiments, in one embodiment of the present application, controlling the charging and discharging action of the battery assembly and / or outputting target prompt information based on the relationship between the detected cell voltage of the battery assembly and the abnormal voltage range includes:

[0116] If the cell voltage of the battery assembly is within the third abnormal voltage range, a first prompt message is output to prompt the user to charge the battery assembly to reduce the risk of volume expansion of the battery assembly due to excessive discharge of the cell voltage. Optionally, in one embodiment of the present application, the maximum voltage of the third abnormal voltage range is not greater than the minimum voltage of the first abnormal voltage range.

[0117] On the basis of any of the above embodiments, in one embodiment of the present application, controlling the charging and discharging action of the battery assembly and / or outputting target prompt information based on the relationship between the detected cell voltage of the battery assembly and the abnormal voltage range includes:

[0118] If the cell voltage of the battery assembly is within the fourth abnormal voltage range, stop charging the battery assembly and control the discharge of the battery assembly to reduce the risk of volume expansion of the battery assembly due to overcharging of the cell voltage. Optionally, in one embodiment of the present application, the minimum voltage of the fourth abnormal voltage range is not less than the maximum voltage of the second abnormal voltage range.

[0119] On the basis of any of the above embodiments, in one embodiment of the present application, controlling the charging and discharging action of the battery assembly and / or outputting target prompt information based on the relationship between the detected cell voltage of the battery assembly and the abnormal voltage range includes:

[0120] If the cell voltage of the battery assembly is within the fifth abnormal voltage range and the battery assembly is electrically connected to a power adapter, the battery assembly is controlled to enter a first self-repair mode based on interactive operations. Optionally, if the cell voltage of the battery assembly is within the fifth abnormal voltage range and the battery assembly is electrically connected to a power adapter, a second prompt message is issued to prompt the user to operate the battery assembly to enter the first self-repair mode to alleviate the volume expansion of the battery assembly. However, the present application is not limited to this. In other embodiments of the present application, if the cell voltage of the battery assembly is within the fifth abnormal voltage range and the battery assembly is electrically connected to a power adapter, the battery assembly can also be directly controlled to enter the first self-repair mode, depending on the specific circumstances. Optionally, in one embodiment of the present application, the maximum voltage of the fifth abnormal voltage range is not greater than the minimum voltage of the third abnormal voltage range.

[0121] Optionally, based on the above embodiment, in one embodiment of the present application, if the cell voltage of the battery assembly is within the fifth abnormal voltage range and the battery assembly is electrically connected to a power adapter, the battery assembly is controlled to enter a first self-repair mode based on an interactive operation, and the method further includes: responding to a first operation of the user, controlling the battery assembly to enter the first cell self-repair mode. Specifically, in one embodiment of the present application, controlling the battery assembly to enter the first self-repair mode includes:

[0122] S401: charging the battery cells of the battery assembly with a first current until charging is completed;

[0123] S402: After charging is completed, cutting off the charging path of the battery assembly and leaving it to stand for a first time;

[0124] S402: discharging the battery cells of the battery assembly until the discharging is completed;

[0125] S404: After the discharge is completed, stand still for a first time;

[0126] S401 to S404 are repeatedly performed until the battery assembly completes K1 charge and discharge cycles.

[0127] It should be noted that, in this embodiment, the first current is smaller than the normal charging current of the battery assembly, so that the battery assembly is charged with a smaller current, thereby preventing the battery assembly from bulging and then being charged with a large current to generate more heat and thus causing an explosion. Moreover, in this embodiment, charging the battery assembly with a smaller current can slow down the ion consumption and generation rate on the electrode surface of the battery cell, thereby reducing the ion concentration gradient between the electrode surface and the bulk solution, thereby reducing the concentration polarization phenomenon in the battery cell.

[0128] When the polarization of the battery cell is reduced, the energy loss of the battery assembly during the charging and discharging process can be reduced, thereby improving the energy conversion efficiency, which means that the battery assembly can store more electrical energy at the same volume and weight, thereby reducing the risk of bulging caused by overcharging or discharging. In addition, the polarization phenomenon will cause some unnecessary side reactions inside the battery assembly, which may produce gas or other harmful substances, thereby increasing the risk of bulging of the battery assembly. By reducing polarization, the occurrence of these side reactions can be reduced, the gas that causes bulging in the battery assembly can be absorbed, and the volume expansion (bulging) phenomenon of the battery assembly can be alleviated.

[0129] Therefore, in the first self-repair mode, the embodiment of the present application utilizes a small current to charge the battery assembly, which can reduce the polarization phenomenon in the battery assembly, repair the battery assembly, increase the service life of the battery assembly, and at the same time, alleviate the swelling phenomenon of the battery assembly.

[0130] Optionally, in one embodiment of the present application, the first current is 0.2C, the first time is 5 minutes, and K1 is 2, so as to improve the repair efficiency of the battery component on the basis of alleviating the polarization phenomenon of the battery component, repairing the battery component, and extending the service life of the battery component, but the present application does not limit this and it depends on the specific circumstances.

[0131] On the basis of any of the above embodiments, in one embodiment of the present application, controlling the charging and discharging action of the battery assembly and / or outputting target prompt information based on the relationship between the detected cell voltage of the battery assembly and the abnormal voltage range includes:

[0132] If the cell voltage of the battery assembly is within the sixth abnormal voltage range or the seventh abnormal voltage range and the battery assembly is electrically connected to a power adapter, the battery assembly is controlled to enter a second self-repair mode and a third prompt message is issued to prompt the user that the battery assembly has entered the second self-repair mode to alleviate the volume expansion of the battery assembly.

[0133] Specifically, in one embodiment of the present application, controlling the battery assembly to enter the second self-repair mode includes:

[0134] S411: charging the battery cells of the battery assembly with a second current until charging is completed;

[0135] S412: After charging is completed, cutting off the charging path of the battery assembly and leaving it to stand for a second time;

[0136] S412: discharging the battery cells of the battery assembly until the discharging is completed;

[0137] S414: After the discharge is completed, the device is left to stand for a second time;

[0138] S411 to S414 are repeatedly performed until the battery assembly completes K2 charge and discharge cycles.

[0139] Optionally, in the above embodiment, the maximum voltage of the sixth abnormal voltage range is not greater than the minimum voltage of the fifth abnormal voltage range, the minimum value of the seventh abnormal voltage range is not less than the maximum value of the fourth abnormal voltage range, and the second current is less than the first current.

[0140] In the second self-repair mode of the embodiment of the present application, a smaller second current is used to charge the battery assembly, which can reduce the polarization phenomenon in the battery assembly, repair the battery assembly, and increase the service life of the battery assembly. At the same time, the gas that causes bulging in the battery assembly is absorbed to alleviate the bulging phenomenon of the battery assembly.

[0141] Optionally, in one embodiment of the present application, the first current is 0.05C, the first time is 10 minutes, and K1 is 3, so as to improve the repair efficiency of the battery component on the basis of reducing the polarization phenomenon of the battery component, repairing the battery component, and extending the service life of the battery component, but the present application does not limit this and it depends on the specific circumstances.

[0142] On the basis of any of the above embodiments, in one embodiment of the present application, the charging and discharging actions of the battery assembly and / or the output target prompt information are controlled based on the relationship between the monitored cell voltage of the battery assembly and the abnormal voltage range, including: if the battery assembly completes the second self-repair mode, a fourth prompt information is issued to prompt the user to reduce the operation of overcharging or over-discharging the battery cell, so as to extend the service life of the battery assembly.

[0143] The following describes, in conjunction with a specific embodiment, "controlling the charging and discharging action of the battery assembly and / or outputting target prompt information based on the relationship between the monitored cell voltage of the battery assembly and the abnormal voltage range" in an embodiment of the present application.

[0144] Specifically, in one embodiment of the present application, the normal voltage range of the battery assembly is 3.0V~4.53V, its overcharge safety voltage is 4.53V+20mV, and its over-discharge safety voltage is 3V-20mV. Optionally, in this embodiment, the overcharge danger voltage interval of the battery assembly includes: 4.53V~4.55V, 4.55V~4.6V, 4.6V~5V; the over-discharge danger voltage interval includes 3 V ~2.98V, 2.98V~2.8V, 2.8V~2.5V, 2.5V~1.3V, 1.3V~0V. In this embodiment, the charging and discharging actions of the battery assembly and / or the output target prompt information are controlled based on the relationship between the monitored cell voltage of the battery assembly and the abnormal voltage range, including:

[0145] If the battery cell voltage of the battery assembly is monitored to be a value between 4.53V and 4.55V or 3V and 2.98V, the battery cell can be used normally without special treatment.

[0146] If the cell voltage of the battery assembly is monitored to be a value between 2.98V and 2.8V, the first prompt message is issued to remind the user to charge in time;

[0147] If the cell voltage of the battery assembly is detected to be a value between 4.6V and 4.55V, the battery assembly is forcibly powered off and the discharge of the battery assembly is accelerated;

[0148] If the cell voltage of the battery assembly is monitored to be between 2.8V and 2.5V, a second prompt message is issued when the battery assembly is connected to the adapter, reminding the user to enter the first self-repair mode, which specifically includes: using a 0.2C current to charge and discharge the cell of the battery assembly twice, and standing for 5 minutes after any charging or discharging operation during the charging and discharging process, so as to reduce the polarization phenomenon inside the battery assembly, improve the cell repair efficiency, and maintain the cell life;

[0149] If the cell voltage of the battery assembly is monitored to be at a value between 2.5V and 1.3V or between 4.6V and 5V, when the battery assembly is connected to the adapter, the battery assembly is controlled to automatically enter the second self-repair mode, and a third prompt message is issued to remind the user that the battery assembly has been forced to enter the second self-repair mode. The control of the battery assembly to automatically enter the second self-repair mode specifically includes: using a 0.05C current to charge and discharge the cell of the battery assembly for 3 times, and each charging operation or discharging operation in the charging and discharging process is left to stand for 10 minutes after completion to reduce the polarization phenomenon inside the battery assembly, and at the same time absorb the gas in the battery assembly to alleviate the bulging phenomenon;

[0150] After the battery assembly completes the second self-repair mode, a fourth prompt message is issued to remind the user to reduce overcharging / over-discharging of the battery cells and increase the service life of the battery assembly.

[0151] It should be noted that, in the above embodiments, each prompt information can be notified to the user in the form of a pop-up window, or in other ways. This application does not limit this, and it depends on the specific situation.

[0152] Based on any of the above embodiments, in one embodiment of the present application, the method further includes: conducting experiments on battery assembly samples, obtaining the overcharge trigger voltage and over-discharge trigger voltage of the battery assembly samples, and obtaining the abnormal voltage range of the battery assembly samples, wherein the various parameters of the battery assembly samples and the battery assembly meet the same conditions.

[0153] It can be seen that the method provided in the embodiment of the present application can obtain the severity of the abnormal gas production of the battery cells of the battery assembly through experimental verification in advance, and when the abnormal voltage value of the battery cell is monitored during normal use, the abnormal gas is absorbed in time through the set charging and discharging process to ensure the safety of the user, thereby improving the safety of the battery assembly during use.

[0154] In addition, the method provided in the embodiment of the present application alleviates the swelling phenomenon of the battery component by controlling the charge and discharge system. No additional hardware is required and the cost is low. Moreover, in the entire process of alleviating the swelling phenomenon of the battery component by controlling the charge and discharge system, basically no actual operation is required by the user, and the user experience is good.

[0155] In addition, the present application also provides an electronic device, such as Figure 5 As shown, the electronic device includes a device body 10 and a battery assembly 20 disposed on the device body 10, wherein the battery assembly 20 includes a battery management chip 21, and the battery management chip 21 can perform the following operations:

[0156] Determine the number of charge and discharge cycles of the battery assembly;

[0157] Obtaining usage data of the battery assembly within a target voltage range during a target detection phase, wherein the target detection phase corresponds to the number of charge and discharge cycles;

[0158] The health of the battery assembly is determined based on the number of charge and discharge cycles and the usage data.

[0159] It should be noted that in the embodiments of the present application, the battery management chip can be used to execute the method for determining the battery health provided in any of the above embodiments. Since the relevant description of the method for determining the battery health has been described in the above embodiments, it will not be repeated here.

[0160] Optionally, in one embodiment of the present application, the battery management chip is further configured to perform the following operations:

[0161] configuring an abnormal voltage range of the battery assembly based on the health of the battery assembly; and,

[0162] Based on the monitored relationship between the cell voltage of the battery assembly and the abnormal voltage range, the charging and discharging operation of the battery assembly is controlled and / or target prompt information is output.

[0163] Optionally, in one embodiment of the present application, the battery management chip is used to control the charging and discharging of the battery assembly and / or output target prompt information based on the monitored relationship between the cell voltage of the battery assembly and the abnormal voltage range, and is specifically used to perform at least one of the following operations:

[0164] If the cell voltage of the battery assembly is within a first abnormal voltage range or within a second abnormal voltage range, maintaining the use state of the battery assembly, the second abnormal voltage range being smaller than the first abnormal voltage range;

[0165] If the cell voltage of the battery assembly is within a third abnormal voltage range, outputting a first prompt message to prompt a user to charge the battery assembly;

[0166] If the cell voltage of the battery assembly is within a fourth abnormal voltage range, stopping charging the battery assembly and controlling the battery assembly to discharge;

[0167] If the cell voltage of the battery assembly is within a fifth abnormal voltage range and the battery assembly is electrically connected to a power adapter, controlling the battery assembly to enter a first self-repair mode based on an interactive operation;

[0168] If the cell voltage of the battery assembly is within the sixth abnormal voltage range or within the seventh abnormal voltage range and the battery assembly is electrically connected to a power adapter, the battery assembly is controlled to enter a second self-repair mode.

[0169] Optionally, the battery management chip is used to control the charging and discharging operation of the battery assembly and / or output target prompt information based on the monitored relationship between the cell voltage of the battery assembly and the abnormal voltage range, and is also used to execute:

[0170] If the battery assembly completes the second self-repair mode, the system processor of the electronic device is notified to issue a fourth prompt message to prompt the user to reduce the overcharging or over-discharging operations of the battery cell.

[0171] It should be noted that in the above embodiments, each prompt information can be notified to the user in the form of a pop-up window, or in other ways, such as sound reminders, screen displays, etc. This application does not limit this, and it depends on the specific situation.

[0172] Optionally, in one embodiment of the present application, the electronic device may be a mobile phone, a tablet computer, a wearable device, a vehicle-mounted device, an augmented reality (AR) / virtual reality (VR) device, a laptop computer, an ultra-mobile personal computer (UMPC), a netbook, a personal digital assistant (PDA), etc., and the present embodiment of the application does not impose any restrictions on this.

[0173] In summary, the electronic device provided in the embodiment of the present application can obtain the health of the battery assembly by monitoring the voltage of the battery assembly, and based on the health of the battery assembly, when the battery assembly may swell, it can alleviate the swelling of the battery assembly by controlling the charge and discharge system. There is no need to add additional hardware, and the cost is low. Moreover, in the entire process of alleviating the swelling of the battery assembly by controlling the charge and discharge system, basically no actual operation is required by the user, and the user experience is good.

[0174] In this specification, each embodiment is described in a progressive, parallel, or progressive and parallel manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0175] It should be noted that in the description of the present application, it should be understood that the description of the drawings and embodiments is illustrative rather than restrictive. It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish an entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the term "include", "comprise" or any other variant thereof is intended to cover non-exclusive inclusion, so that the article or equipment including a series of elements includes not only those elements, but also includes other elements that are not clearly listed, or also includes elements inherent to such articles or equipment. In the absence of more restrictions, the elements limited by the statement "including one..." do not exclude the existence of other identical elements in the article or equipment including the above-mentioned elements.

[0176] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for determining battery health, comprising: Determine the number of charge and discharge cycles of the battery assembly; Obtaining usage data of the battery assembly within a target voltage range during a target detection phase, wherein the target detection phase corresponds to the number of charge and discharge cycles; The health of the battery assembly is determined based on the number of charge and discharge cycles and the usage data.

2. The method according to claim 1, wherein: Obtaining usage data of the battery assembly within the target voltage range during the target detection phase, including: Determining the detection stage of the battery assembly based on the number of charge and discharge cycles; Detecting the cumulative number of times and the cumulative usage time of the minimum cell voltage of the battery assembly being lower than the target set voltage during the detection phase; The target setting voltage is the minimum voltage in the target voltage range, and the target setting voltages corresponding to the battery assembly in different detection stages are the same or different.

3. The method according to claim 1 or 2, wherein: Determining the health of the battery assembly based on the number of charge and discharge cycles and the usage data includes: Determining a cycle factor coefficient corresponding to the battery assembly based on the number of charge and discharge cycles; Obtaining a characterization value of usage data of the battery assembly within a target voltage range in each detection stage, wherein at least one target voltage range is correspondingly set for each detection stage; The product of the cycle factor coefficient corresponding to each detection stage and the characterization value of the usage data is summed to obtain the health of the battery assembly.

4. According to the method of claim 3, the cyclic factor coefficients corresponding to different detection stages are different.

5. The method according to claim 3, determining the health of the battery assembly based on the number of charge and discharge cycles and the usage data comprises: If the number of charge and discharge cycles is in the first detection stage arranged along the usage time of the battery assembly, multiply the cycle factor coefficient corresponding to the detection stage and the characterization value of the usage data corresponding to the detection stage to obtain the health of the battery assembly; If the number of charge and discharge cycles is in the Nth detection stage arranged along the usage time of the battery component, and N is greater than 1, the product of the cycle factor coefficient corresponding to the detection stage and the characterization value of the usage data corresponding to the detection stage, as well as the product of the cycle factor coefficients corresponding to each detection stage before the detection stage and the characterization value of the usage data corresponding to the detection stage are summed to obtain the health of the battery component.

6. The method according to claim 3, if at least two target voltage ranges are set corresponding to one detection phase, the method for obtaining the characterization value of the usage data comprises: Determine the cumulative number of times and the cumulative usage time of the minimum cell voltage of the battery assembly being lower than the target set voltage of each voltage range; Determine a first characterization value of the cumulative number of times that the minimum cell voltage of the battery assembly is lower than the target setting voltage of each voltage range and a second characterization value of the cumulative usage time, the first characterization value being the cumulative number of times the minimum cell voltage of the battery assembly is lower than the target setting voltage / the maximum cumulative number of times the minimum cell voltage of the battery assembly can be lower than the target setting voltage, and the second characterization value being the cumulative usage time that the minimum cell voltage of the battery assembly is lower than the target setting voltage / the maximum cumulative usage time that the minimum cell voltage of the battery assembly can be lower than the target setting voltage; The product of the first characterization value and the second characterization value corresponding to each voltage range is summed to obtain the characterization value of the usage data.

7. The method according to claim 1, further comprising: Monitoring the cell voltage of the battery assembly; In each detection stage, when it is monitored that the minimum cell voltage of the battery assembly is less than the target setting voltage, the cumulative number of times that the minimum cell voltage of the battery assembly is triggered to be lower than the target setting voltage is accumulated, and when the minimum cell voltage of the battery assembly is not less than the target setting voltage, the cumulative duration that the minimum cell voltage of the battery assembly is triggered to be lower than the target setting voltage is accumulated; If the battery assembly leaves the current detection phase and enters the next detection phase, the usage data of the battery assembly in the current detection phase is stored.

8. The method according to claim 1, further comprising: configuring an abnormal voltage range of the battery assembly based on the health of the battery assembly; as well as, Based on the relationship between the monitored cell voltage of the battery assembly and the abnormal voltage range, the charging and discharging actions of the battery assembly are controlled and / or target prompt information is output.

9. The method according to claim 8, wherein: Controlling the charging and discharging action of the battery assembly and / or outputting target prompt information based on the relationship between the monitored cell voltage of the battery assembly and the abnormal voltage range includes at least one of the following: If the cell voltage of the battery assembly is within a first abnormal voltage range or within a second abnormal voltage range, maintaining the use state of the battery assembly, the second abnormal voltage range being smaller than the first abnormal voltage range; If the cell voltage of the battery assembly is within a third abnormal voltage range, outputting a first prompt message to prompt a user to charge the battery assembly; If the cell voltage of the battery assembly is within a fourth abnormal voltage range, stopping charging the battery assembly and controlling the battery assembly to discharge; If the cell voltage of the battery assembly is within a fifth abnormal voltage range and the battery assembly is electrically connected to a power adapter, controlling the battery assembly to enter a first self-repair mode based on an interactive operation; If the cell voltage of the battery assembly is within the sixth abnormal voltage range or within the seventh abnormal voltage range and the battery assembly is electrically connected to a power adapter, the battery assembly is controlled to enter a second self-repair mode.

10. An electronic device, comprising a device body and a battery assembly disposed on the device body, wherein: The battery assembly includes a battery management chip, and the battery management chip can perform the following operations: Determine the number of charge and discharge cycles of the battery assembly; Obtaining usage data of the battery assembly within a target voltage range during a target detection phase, wherein the target detection phase corresponds to the number of charge and discharge cycles; The health of the battery assembly is determined based on the number of charge and discharge cycles and the usage data.

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