CN116087795A - Battery detection method, storage medium and electronic device - Google Patents
Battery detection method, storage medium and electronic device Download PDFInfo
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- CN116087795A CN116087795A CN202310371598.4A CN202310371598A CN116087795A CN 116087795 A CN116087795 A CN 116087795A CN 202310371598 A CN202310371598 A CN 202310371598A CN 116087795 A CN116087795 A CN 116087795A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/367—Software therefor, e.g. for battery testing using modelling or look-up tables
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention discloses a battery detection method, a storage medium and electronic equipment, wherein the method comprises the following steps: acquiring the actual shipment voltage of the battery in the last step of the battery capacity division process; obtaining a theoretical open-circuit voltage according to the actual shipment voltage and a shipment voltage-open-circuit voltage model constructed in advance; after the battery is kept stand for a preset time, detecting the actual open-circuit voltage of the battery; and determining whether the battery exceeds the specification according to the actual open-circuit voltage and the theoretical open-circuit voltage. The method does not need long-time self-discharge, has short time consumption, and can realize the advanced identification of the battery with the super specification, thereby effectively improving the battery yield and reducing the defective rate; in addition, the method is simple and easy to realize, and the difficulty of leading-in production can be reduced.
Description
Technical Field
The present invention relates to the field of battery technologies, and in particular, to a battery detection method, a storage medium, and an electronic device.
Background
The battery needs to be subjected to self-discharge detection before being taken down to identify whether the battery exceeds the specification, and the time required for the self-discharge process is long, usually more than three days are required, so that the productivity is reduced. The method for rapidly partitioning the capacity of the lithium ion battery disclosed in the related art only predicts the capacity of the battery, shortens the time required for partitioning, and cannot identify the ultra-standard battery in the self-discharge process in advance.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent. Therefore, an object of the present invention is to provide a battery detection method, a storage medium and an electronic device, so as to realize the advanced recognition of the super-specification battery, improve the battery productivity and reduce the defective rate.
In a first aspect, an embodiment of the present invention provides a battery detection method, where the method includes: acquiring the actual shipment voltage of the battery in the last step of the battery capacity division process; obtaining a theoretical open-circuit voltage according to the actual shipment voltage and a shipment voltage-open-circuit voltage model constructed in advance; after the battery is kept stand for a preset time, detecting the actual open-circuit voltage of the battery; and determining whether the battery exceeds the specification according to the actual open-circuit voltage and the theoretical open-circuit voltage.
In addition, the battery detection method according to the embodiment of the invention may further have the following additional technical features:
according to one embodiment of the invention, the determining whether the battery is over-sized according to the actual open circuit voltage and the theoretical open circuit voltage includes: calculating a difference between the actual open circuit voltage and the theoretical open circuit voltage; if the absolute value of the difference value is larger than the difference value limit value, determining that the battery exceeds the specification; and if the absolute value of the difference value is smaller than or equal to the difference value limit value, determining that the battery is not over-specified.
According to one embodiment of the present invention, after the determining that the battery exceeds the specification, the method further includes: determining a target working mode and a target working parameter according to the difference value; and charging and discharging the battery according to the target working mode and the target working parameter.
According to one embodiment of the invention, determining the target operating mode from the difference comprises: if the difference value is a negative value, determining that the target working mode is a charging mode; and if the difference is a positive value, determining that the target working mode is a discharging mode.
According to one embodiment of the invention, determining the target operating parameter from the difference comprises: determining a target open-circuit voltage-charge state curve according to the positive and negative of the difference value; and obtaining a state of charge change value as the target working parameter according to the absolute value of the difference value and the target open-circuit voltage-state of charge curve.
According to one embodiment of the present invention, the determining the target open circuit voltage-state of charge curve according to the positive and negative of the difference value includes: if the difference value is a negative value, determining that the target open-circuit voltage-charge state curve is an open-circuit voltage-charge state curve under a pre-constructed charging working condition; and if the difference is a positive value, determining the target open-circuit voltage-charge state curve as an open-circuit voltage-charge state curve under a pre-constructed discharging working condition.
According to one embodiment of the invention, the charging condition is a constant current charging condition, and the charging mode is a constant current charging mode; the discharging working condition is a constant-current discharging working condition, and the discharging mode is a constant-current discharging mode.
According to one embodiment of the invention, the method further comprises: and after the battery is determined to be over-standard, sending out early warning information.
In a second aspect, an embodiment of the present invention proposes a computer-readable storage medium, on which a computer program is stored, which when executed by a processor, implements the battery detection method of the first aspect described above.
In a third aspect, an embodiment of the present invention provides an electronic device, including a memory, a processor, and a computer program stored on the memory, where the computer program, when executed by the processor, implements the battery detection method of the first aspect.
According to the battery detection method, the storage medium and the electronic equipment, the shipment voltage-open circuit voltage model is built in advance, and then in actual detection, the open circuit voltage deviation condition is obtained through the model, the actual shipment voltage and the actual open circuit voltage, and the over-specification condition of the battery is determined according to the deviation condition. Therefore, long-time self-discharge is not needed, the time is short, and the recognition of the ultra-specification battery in advance can be realized, so that the productivity can be effectively improved, and the bad product rate can be reduced; in addition, the method is simple and easy to realize, and the difficulty of leading-in production can be reduced.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a flow chart of a battery detection method according to one embodiment of the present invention;
FIG. 2 is a plot of shipment voltage versus open circuit voltage for one example of the present invention;
FIG. 3 is a graph of open circuit voltage distribution across a battery line for one example of the present invention;
FIG. 4 is a flowchart of a battery detection method according to another embodiment of the present invention;
FIG. 5 is an open circuit voltage-state of charge graph of one example of the present invention;
fig. 6 is a block diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
A battery detection method, a storage medium, and an electronic apparatus according to an embodiment of the present invention are described below with reference to the accompanying drawings.
Fig. 1 is a flowchart of a battery detection method according to an embodiment of the present invention.
As shown in fig. 1, the battery detection method includes:
s1, acquiring the actual shipment voltage of the battery in the last step of the battery capacity division process.
The capacity-dividing step is a step of charging and discharging the battery, and detecting the discharge capacity when the capacity is full, thereby determining the capacity of the battery. Only the tested capacity meets or is greater than the designed capacity, and the battery is acceptable, while the battery less than the designed capacity cannot be counted as an acceptable battery. The last step of the battery capacity-dividing process may be to charge the battery to the shipment voltage, at which time the detected final charge voltage may be taken as the actual shipment voltage; the final step of the battery capacity division process may be to discharge the battery to the shipment voltage, and the detected final shipment voltage may be used as the actual shipment voltage. Wherein the shipment voltage is determined according to the battery model or the like.
S2, obtaining a theoretical open-circuit voltage according to the actual shipment voltage and a pre-constructed shipment voltage-open-circuit voltage model.
Specifically, the shipment voltage-open circuit voltage model (denoted as an AGLV-OCV1 fitting model) may be a relationship between shipment voltage and open circuit voltage, as shown in fig. 2 (the abscissa x is shipment voltage (which may also be referred to as voltage in the last step of the capacity division process), the ordinate y is open circuit voltage, denoted as OCV1, y=0.0021x-3.7611 is a relationship, and r=0.9989 is a correlation coefficient), and the relationship may be obtained by performing experiments on a battery that does not exceed the specification in advance. Experiments can be carried out on batteries of different types respectively to obtain corresponding relation curves of shipment voltage and open-circuit voltage of the batteries of different types, and then when battery detection is carried out, the corresponding relation curves of shipment voltage and open-circuit voltage can be selected according to the type of the battery to be detected.
For a certain type of multiple cells, the experimental procedure may include: and obtaining the shipment voltage of each battery of the type in the last step of the capacity-dividing process, standing the battery of the type for a preset time, detecting the current open-circuit voltage of each battery, obtaining a plurality of groups (shipment voltage and open-circuit voltage), and performing curve fitting on the plurality of groups (shipment voltage and open-circuit voltage) to obtain a relation curve of the shipment voltage and the open-circuit voltage of the battery of the type. Wherein the preset time may be less than 3 days.
And S3, after the battery is kept stand for a preset time, detecting the actual open-circuit voltage of the battery.
The preset time is the same as that in the experiment. Fig. 3 is a histogram of the actual open circuit voltage of the production line of one example of the present invention. In fig. 3, the abscissa is the actual open circuit voltage OCV1, the ordinate is the frequency, the number of samples N of the product line battery is 264, the average value of the actual open circuit voltage is 3.276V, the standard deviation is 0.0007845, and the product line battery meets the normal distribution.
And S4, determining whether the battery exceeds the specification according to the actual open-circuit voltage and the theoretical open-circuit voltage.
In some embodiments, determining whether the battery is over-sized based on the actual open circuit voltage and the theoretical open circuit voltage includes: calculating a difference between the actual open circuit voltage and the theoretical open circuit voltage; if the absolute value of the difference value is larger than the difference value limit value, determining that the battery exceeds the specification; if the absolute value of the difference is less than or equal to the difference limit, determining that the battery is not over-specified.
In other embodiments, determining whether the battery is over-sized based on the actual open circuit voltage and the theoretical open circuit voltage includes: calculating the ratio between the actual open circuit voltage and the theoretical open circuit voltage; if the ratio is greater than the first ratio limit or less than the second ratio limit, determining that the battery exceeds the specification; otherwise, determining that the battery is not over-specification. Wherein the first ratio limit is greater than 1 and the second ratio limit is less than 1.
It should be noted that, the battery according to the embodiment of the present invention may be a battery cell with a small voltage level, such as a 4.2V lithium battery cell.
According to the battery detection method, an AGLV-OCV1 fitting model is built in advance, and then in actual detection, the open-circuit voltage deviation condition is obtained through the model, the actual shipment voltage and the actual open-circuit voltage, and the over-specification condition of the battery is determined according to the deviation condition. The method does not need long-time self-discharge, has short time consumption, and can realize the advanced identification of the battery with the super specification, thereby effectively improving the battery yield and reducing the defective rate; in addition, the method is simple and easy to realize, and the difficulty of leading-in production can be reduced.
In some embodiments, after determining that the battery is over-sized, an early warning message may also be sent.
The early warning information can be text information, sound information, light information and the like, and through the arrangement of the early warning information, battery production line operators can timely know and process the battery ultra-specification condition. Correspondingly, if the battery is determined not to exceed the specification, the normal production flow of the battery is continued, such as appearance full inspection, grade code spraying, grade scanning inspection, packaging, finished battery warehousing and the like.
In some embodiments, as shown in fig. 4, after determining that the battery is over-sized, the method further comprises:
s5, determining a target working mode and a target working parameter according to the difference value.
The difference is the difference between the actual open circuit voltage and the theoretical open circuit voltage. The operating modes may include a charge mode and a discharge mode, and the operating parameters may include, but are not limited to, at least one of a voltage parameter, a state of charge value, a capacity parameter.
Specifically, determining the target operating mode based on the difference may include: if the difference value is negative, determining that the target working mode is a charging mode; and if the difference is a positive value, determining that the target working mode is a discharging mode.
In some embodiments, determining the target operating parameter from the difference comprises: determining a target open-circuit voltage-charge state curve according to the positive and negative of the difference value; and obtaining a state of charge change value as a target working parameter according to the absolute value of the difference value and the target open circuit voltage-state of charge curve.
Wherein, determining the target open-circuit voltage-charge state curve according to the positive and negative of the difference value can comprise: if the difference value is a negative value, determining that the target open-circuit voltage-charge state curve is an open-circuit voltage-charge state curve under a pre-constructed charging working condition; and if the difference is a positive value, determining that the target open-circuit voltage-charge state curve is an open-circuit voltage-charge state curve under a pre-constructed discharging working condition.
As an example, the charging condition is a constant current charging condition, and the charging mode is a constant current charging mode; the discharging working condition is a constant-current discharging working condition, and the discharging mode is a constant-current discharging mode.
Specifically, taking a lithium iron phosphate battery as an example, a relationship between the open circuit voltage OCV and the state of charge value SOC is shown in fig. 5. In fig. 5, a CC curve represents an OCV-SOC curve corresponding to a constant-current charging condition, where the relationship is y=639x+3145.8, and the correlation coefficient rq= 0.9979; the DC curve represents an OCV-SOC curve corresponding to the constant current discharge condition, and the relationship is y=64dx+3142.5, and the correlation coefficient r=0.9997. When the difference is greater than 0, the battery voltage needs to be adjusted by discharging, and the discharge capacity can be determined by searching a DC curve; when the difference is smaller than 0, the battery voltage needs to be adjusted by charging, and the discharge capacity can be determined by searching the CC curve.
And S6, charging and discharging the battery according to the target working mode and the target working parameters.
Specifically, if the difference between the theoretical open circuit voltage and the actual open circuit voltage predicted by the AGLV (shipment voltage in the last step of the capacity-dividing process) meets the requirement, the production can be normally performed; if the predicted OCV1 is greatly deviated from the actual open circuit voltage, the battery voltage can be adjusted according to the curve relationship between OCV and SOC. Referring to fig. 5, if the difference is smaller than 0 and the value is 10mV, SOC with a target operating parameter of 1.565% is obtained according to the CC curve (in fig. 5, the CC curve is a straight line, any 10mV line segment in the OCV direction corresponds to the same SOC line segment, taking the OCV line segment 3260 mV-3270 mV as an example, the SOC line segment corresponding to the OCV line segment is (3260-3145.8)/639) - (3270-3145.8)/639, the difference between (3270-3145.8)/639 and (3260-3145.8)/639 is 1.565%), and then the SOC of 1.565% can be charged for the battery, so that the battery open-circuit voltage can be ensured within the specification range; if the difference is greater than 0 and the value is 10mV, the SOC with the target working parameter of 1.555% is obtained according to the DC curve, and then the SOC with the target working parameter of 1.555% can be discharged to the battery, so that the open-circuit voltage of the battery can be ensured to be within the specification range.
In some embodiments, before determining the target operating mode and the target operating parameter based on the difference, it is further determined whether the absolute value of the difference is greater than a preset value that is greater than the difference limit described above. If the difference is larger than the preset value, the battery is seriously over-specification, and the subsequent use is influenced even if the battery is regulated, and the step of determining the target working mode and the target working parameter according to the difference can not be executed at the moment; if the difference is smaller than the preset value, the battery is not seriously exceeded, the battery can be finely adjusted through a charging and discharging flow, and the step of determining the target working mode and the target working parameter according to the difference can be executed.
According to the battery detection method, the AGLV-OCV1 fitting model is constructed in advance, and then in actual detection, the open-circuit voltage deviation condition is obtained through the model, the actual shipment voltage and the actual open-circuit voltage, and the over-specification condition of the battery is determined according to the deviation condition. Therefore, long-time self-discharge is not needed, the time is short, and the recognition of the ultra-specification battery in advance can be realized, so that the productivity can be effectively improved, and the bad product rate can be reduced; in addition, the method is simple and easy to realize, and the difficulty of leading-in production can be reduced. Meanwhile, when the battery exceeds the specification, the battery is subjected to fine adjustment through charging and discharging, so that the battery yield can be further improved, and the bad product rate is reduced.
Based on the above battery detection method, the present invention proposes a computer readable storage medium.
In this embodiment, a computer program is stored on a computer readable storage medium, and when the computer program is executed by a processor, the battery detection method of the above embodiment is implemented.
Based on the battery detection method, the invention further provides electronic equipment.
Fig. 6 is a block diagram of an electronic device according to an embodiment of the present invention.
As shown in fig. 6, the electronic device 600 includes: a processor 601 and a memory 603. The processor 601 is coupled to a memory 603, such as via a bus 602. Optionally, the electronic device 600 may also include a transceiver 604. It should be noted that, in practical applications, the transceiver 604 is not limited to one, and the structure of the electronic device 600 is not limited to the embodiment of the present invention.
The processor 601 may be a CPU (Central Processing Unit ), general purpose processor, DSP (Digital Signal Processor, data signal processor), ASIC (Application Specific Integrated Circuit ), FPGA (Field Programmable Gate Array, field programmable gate array) or other programmable logic device, transistor logic device, hardware components, or any combination thereof. Which may implement or perform the various exemplary logical blocks, modules, and circuits described in connection with the present disclosure. The processor 601 may also be a combination that performs computing functions, such as including one or more microprocessors, a combination of a DSP and a microprocessor, and the like.
The memory 603 is used to store a computer program corresponding to the battery detection method of the above-described embodiment of the present invention, which is controlled to be executed by the processor 601. The processor 601 is arranged to execute a computer program stored in the memory 603 for realizing what is shown in the foregoing method embodiments.
Among other things, electronic device 600 includes, but is not limited to: mobile terminals such as mobile phones, notebook computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), in-vehicle terminals (e.g., in-vehicle navigation terminals), and the like, and stationary terminals such as digital TVs, desktop computers, and the like. The electronic device 600 shown in fig. 6 is merely an example, and should not be construed as limiting the functionality and scope of use of embodiments of the present invention.
It should be noted that the logic and/or steps represented in the flowcharts or otherwise described herein, for example, may be considered as a ordered listing of executable instructions for implementing logical functions, and may be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). In addition, the computer readable medium may even be paper or other suitable medium on which the program is printed, as the program may be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.
It is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (10)
1. A battery detection method, the method comprising:
acquiring the actual shipment voltage of the battery in the last step of the battery capacity division process;
obtaining a theoretical open-circuit voltage according to the actual shipment voltage and a shipment voltage-open-circuit voltage model constructed in advance;
after the battery is kept stand for a preset time, detecting the actual open-circuit voltage of the battery;
determining whether the battery exceeds a specification according to the actual open-circuit voltage and the theoretical open-circuit voltage;
and if the battery exceeds the specification, charging and discharging the battery according to the actual open-circuit voltage and the theoretical open-circuit voltage.
2. The battery detection method according to claim 1, wherein the determining whether the battery is over-specification based on the actual open-circuit voltage and the theoretical open-circuit voltage includes:
calculating a difference between the actual open circuit voltage and the theoretical open circuit voltage;
if the absolute value of the difference value is larger than the difference value limit value, determining that the battery exceeds the specification;
and if the absolute value of the difference value is smaller than or equal to the difference value limit value, determining that the battery is not over-specified.
3. The battery detection method according to claim 2, wherein the charging and discharging the battery according to the actual open-circuit voltage and the theoretical open-circuit voltage includes:
determining a target working mode and a target working parameter according to the difference value;
and charging and discharging the battery according to the target working mode and the target working parameter.
4. The battery detection method according to claim 3, wherein determining a target operation mode from the difference value comprises:
if the difference value is a negative value, determining that the target working mode is a charging mode;
and if the difference is a positive value, determining that the target working mode is a discharging mode.
5. The battery testing method of claim 4, wherein determining a target operating parameter based on the difference comprises:
determining a target open-circuit voltage-charge state curve according to the positive and negative of the difference value;
and obtaining a state of charge change value as the target working parameter according to the absolute value of the difference value and the target open-circuit voltage-state of charge curve.
6. The battery detection method according to claim 5, wherein the determining a target open-circuit voltage-state-of-charge curve from the positive and negative of the difference value includes:
if the difference value is a negative value, determining that the target open-circuit voltage-charge state curve is an open-circuit voltage-charge state curve under a pre-constructed charging working condition;
and if the difference is a positive value, determining the target open-circuit voltage-charge state curve as an open-circuit voltage-charge state curve under a pre-constructed discharging working condition.
7. The method for detecting a battery according to claim 6, wherein,
the charging working condition is a constant-current charging working condition, and the charging mode is a constant-current charging mode;
the discharging working condition is a constant-current discharging working condition, and the discharging mode is a constant-current discharging mode.
8. The battery detection method according to any one of claims 1 to 3, characterized in that the method further comprises:
and after the battery is determined to be over-standard, sending out early warning information.
9. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the battery detection method according to any one of claims 1-8.
10. An electronic device comprising a memory, a processor and a computer program stored on the memory, characterized in that the computer program, when executed by the processor, implements the battery detection method according to any of claims 1-8.
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