WO2021179699A1

WO2021179699A1 - Method and apparatus for detecting state of health of battery, and electronic device and storage medium

Info

Publication number: WO2021179699A1
Application number: PCT/CN2020/134319
Authority: WO
Inventors: 邱思彬; 陈强; 沈剑; 江旭峰; 黄嘉曦
Original assignee: 深圳易马达科技有限公司
Priority date: 2020-03-11
Filing date: 2020-12-07
Publication date: 2021-09-16
Also published as: CN111308354A

Abstract

A method and apparatus for detecting state of health of a battery, and an electronic device and a storage medium. The method comprises: obtaining a first energy value released by a target battery in a full-charge state (S101); obtaining type information of the target battery, and querying a second energy value released by the target battery under the nominal capacity from a correspondence table between the preset battery type and the energy value released by the battery under the nominal capacity (S102); and calculating a ratio of the first energy value to the second energy value to generate a state of health value of the target battery (S103). According to the detection method, from the perspective of energy, the discharge capacity of the target battery is solved, the state of health value of the target battery is obtained by calculating the ratio of the discharge capacity of the target battery to the discharge capacity of the target battery under the nominal capacity, a complex mathematical model is not needed in the calculation process, no rigid requirement is needed for the constant-current load, the precision is high, and the requirement for detection devices is low.

Description

Method, device, electronic equipment and storage medium for detecting battery health status

This application claims the priority of the Chinese patent application filed at the Chinese Patent Office on March 11, 2020 with the application number 202010166624.6 and the invention title "Methods, devices, electronic equipment and storage media for battery health status detection". The entire content is incorporated into this application by reference.

Technical field

This application belongs to the technical field of battery detection, and in particular relates to a method, device, electronic equipment, and storage medium for detecting battery health status.

Background technique

The battery will have an aging reaction after being used for a long time or after being left alone, that is, the battery health status will deteriorate. By measuring and calculating the battery health status (State Of Health, SOH), the health status of the battery can be timely and accurately understood, and it is convenient to make changes to the battery. Good management.

At present, most of the existing calculation methods for measuring the battery health status SOH are considered based on the perspective of the battery capacity, and are calculated by directly using the relevant parameters of the discharge. According to application scenarios, it can be roughly divided into two types: one is in the product, which is based on the built-in battery management system (Battery Management System, BMS) calculation; the other is in the experiment, which uses the current integration method The actual capacity is calculated based on the integration of the actual full discharge current versus time. However, in the first method of measurement and calculation, due to the complex battery model and the different load conditions of different systems, the mathematical model used for measurement calculation is also complicated, and due to the uncertainty of the model load, the calculation accuracy is relatively relatively high. Poor; and the second method requires a high-precision constant current load, and if a large-capacity battery is measured, the cross-current load will also become larger, so the requirements for measurement equipment are high and it is difficult to meet the market demand.

technical problem

One of the objectives of the embodiments of this application is to provide a battery health status detection method, device, electronic equipment, and storage medium, which can calculate the battery health status (State Of Health, SOH) from the perspective of energy, with high accuracy and correctness The low requirement of the testing equipment makes the testing of the battery health status simple.

Technical solutions

In order to solve the above technical problems, the technical solutions adopted in the embodiments of this application are:

The first aspect of the embodiments of the present application provides a method for detecting battery health status, and the method for detecting battery health status includes:

Obtaining the first energy value released by the target battery in a fully charged state;

Acquire the type information of the target battery, and query the corresponding relationship table between the preset battery type and the energy value released by the battery under the nominal capacity to find out the target battery corresponding to the release under the nominal capacity The second energy value;

The ratio of the first energy value and the second energy value is calculated to generate the health status value of the target battery.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the step of obtaining the first energy value released by the target battery in a fully charged state includes:

Obtain the third energy value stored internally of the target battery in a fully charged state;

The discharge process of the target battery is solved for energy conservation according to the third energy value, so as to calculate the first energy value released by the target battery in a fully charged state.

With reference to the first possible implementation manner of the first aspect, in the second possible implementation manner of the first aspect, the step of obtaining the third energy value stored inside the target battery in a fully charged state includes:

Based on the law of energy conservation, the third energy value is calculated by the following relationship:

W _c ＝W _b +Q _rc

Among them, W _c is the total energy value output by the charger during the target battery charging process; W _b is the third energy value internally stored in the target battery in the fully charged state; Q _rc is the energy value consumed by the internal resistance during the target battery charging process .

In combination with the second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the discharge process of the target battery is solved for energy conservation according to the third energy value to calculate The first energy value released by the target battery in a fully charged state. The steps include:

Based on the law of conservation of energy, the first energy value is calculated by the following relationship:

W _b ＝W _d +Q _rd

Among them, W _b is the third energy value stored inside the target battery in the fully charged state; W _d is the first energy value released by the target battery in the fully charged state; Q _rd is the target battery's discharge process due to internal resistance. The amount of energy consumed.

With reference to the first aspect, in a fourth possible implementation manner of the first aspect, the ratio of the first energy value and the second energy value released by the target battery under the nominal capacity corresponding to the target battery is calculated to generate the The steps for the health status value of the target battery include:

Set under the same ambient temperature and the same constant discharge current condition, the ratio of the energy value between two batteries of the same type is equal to the ratio of the consumed time.

With reference to the fourth possible implementation manner of the first aspect, in the fifth possible implementation manner of the first aspect, the same ambient temperature and the same constant discharge current condition include:

Configure the temperature to 25℃±2℃; and

Configure the constant current parameter to 0.2c.

With reference to the first aspect, in a sixth possible implementation manner of the first aspect, the acquisition of the type information of the target battery is based on the difference between the preset battery type and the energy value released by the battery under the nominal capacity Before the step of inquiring the second energy value released by the target battery corresponding to the nominal capacity in the corresponding relationship table, it includes:

Establish the corresponding relationship table between the battery type and the energy value released by the battery under the nominal capacity, where the energy value released by the battery under the nominal capacity is calculated by the following relationship:

Among them, W ₀ is the energy value released by the _{battery under the nominal capacity; T 0} is the time required for the battery to discharge from 100% to 0% under the nominal capacity, which is 5h (ie 1.8×s) ; I ₀ is the constant current during discharge of the battery under the nominal capacity, that is, 0.2C, a constant; U ₀ (t) is the relationship between the voltage and time during the discharge of the battery under the nominal capacity.

A second aspect of the embodiments of the present application provides a device for detecting battery health status, and the device for detecting battery health status includes:

An obtaining module, used to obtain the first energy value released by the target battery in a fully charged state;

The processing module is used to obtain the type information of the target battery, and query the correspondence table between the preset battery type and the energy value released by the battery under the nominal capacity to find out that the target battery corresponds to the nominal capacity. The second energy value released under the capacity;

The execution module is configured to calculate the ratio of the first energy value and the second energy value to generate the health status value of the target battery.

The third aspect of the embodiments of the present application provides an electronic device including a memory, a processor, and a computer program stored in the memory and running on the processor. When the processor executes the computer program, The steps of the method for detecting the battery health status according to any one of the first aspect are implemented.

A fourth aspect of the embodiments of the present application provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, it implements the battery according to any one of the first aspects. The steps of the method for detecting health status.

Beneficial effect

Compared with the prior art, the embodiments of this application have the following beneficial effects:

This application is based on the law of conservation of energy. By obtaining the first energy value released by the target battery in a fully charged state, and calculating the ratio of the first energy value to the second energy value, the health of the target battery can be generated Status value. This method solves the discharge capacity (i.e., the first energy value) of the target battery from the energy point of view. Then, the ratio of the discharge capacity of the target battery to the discharge capacity of the target battery corresponding to the nominal capacity (ie, the second energy value) is calculated to obtain the health status value of the target battery. In this process, there is no need for complex mathematical models, the calculation accuracy is high, and there is no hard requirement for constant current load, which can reduce the requirements for testing equipment.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings that need to be used in the embodiments or exemplary technical descriptions. Obviously, the accompanying drawings in the following description are only of the present application. For some embodiments, those of ordinary skill in the art can obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic flowchart of a basic method of a method for detecting a battery health state provided by an embodiment of this application;

2 is a schematic flowchart of a method for detecting the discharge capacity of a target battery in the method for detecting battery health status provided by an embodiment of the application;

3 is a schematic structural diagram of a battery health status detection device provided by an embodiment of the application;

FIG. 4 is a schematic diagram of an electronic device that implements a method for detecting a battery health state provided by an embodiment of the application.

Embodiments of the present invention

In the following description, for the purpose of illustration rather than limitation, specific details such as a specific system structure and technology are proposed for a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details from obstructing the description of this application.

It should be understood that when used in the specification and appended claims of this application, the term "comprising" indicates the existence of the described features, wholes, steps, operations, elements and/or components, but does not exclude one or more other The existence or addition of features, wholes, steps, operations, elements, components, and/or collections thereof.

It should also be understood that the term "and/or" used in the specification and appended claims of this application refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

As used in the description of this application and the appended claims, the term "if" can be construed as "when" or "once" or "in response to determination" or "in response to detecting ". Similarly, the phrase "if determined" or "if detected [described condition or event]" can be interpreted as meaning "once determined" or "in response to determination" or "once detected [described condition or event]" depending on the context ]" or "in response to detection of [condition or event described]".

In addition, in the description of the specification of this application and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

Reference to "one embodiment" or "some embodiments" described in the specification of this application means that one or more embodiments of this application include a specific feature, structure, or characteristic described in combination with the embodiment. Therefore, the sentences "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. appearing in different places in this specification are not necessarily All refer to the same embodiment, but mean "one or more but not all embodiments" unless it is specifically emphasized otherwise. The terms "including", "including", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized.

In order to illustrate the technical solutions described in the present application, specific embodiments are used for description below.

The battery state of health (SOH) refers to the ratio of the actual value of some directly measurable or indirectly calculated performance parameters to the nominal value after the battery has been used for a period of time. It is usually used to determine the state of the battery after its health has declined and to measure the battery. Health. The health of the battery is usually directly manifested as the change of the battery's internal resistance, capacity and other parameters. The battery health status detection method provided by the embodiments of the application aims to equate the health status of the battery to the energy released by the battery from a fully charged state to a cut-off voltage under standard conditions from the perspective of energy. The ratio of the corresponding energy released in the nominal state. From the energy point of view, the battery health status is detected, without the need to establish a complex mathematical model according to the battery model and system load conditions, and the detection accuracy is high; and the requirement for constant current load is low during the detection process, which can reduce the requirements for the detection equipment.

In some embodiments of the present application, please refer to FIG. 1. FIG. 1 is a schematic flowchart of a basic method of a method for detecting a battery health state provided by an embodiment of the present application. The details are as follows:

In step S101, the first energy value released by the target battery in the fully charged state is obtained.

The first energy value represents the discharge capacity of the target battery in a fully charged state. In this embodiment, the charging parameters of the target battery can be measured, and then based on the law of conservation of energy, the discharge parameters of the target battery can be calculated according to the charging parameters, so as to obtain the first energy released by the target battery in the fully charged state. value. It is understandable that in some other embodiments, the discharge parameters of the target battery can also be directly measured by means of direct measurement to obtain the first energy value released by the target battery in the fully charged state.

In step S202, the type information of the target battery is obtained, and the corresponding relationship table between the preset battery type and the energy value released by the battery under the nominal capacity is queried to find out that the target battery corresponds to the nominal capacity. The second energy value released.

Regarding the battery, its nominal capacity refers to the minimum amount of electricity that should be released under certain discharge conditions when the battery is designed and manufactured. Among them, the second energy value is the minimum discharge value of the target battery, and represents the discharge capacity of the target battery in the nominal state. Therefore, if the second energy value released by the target battery reaches the minimum released energy value, it indicates that the battery is in a nominal state, and it can be determined that the health status value of the target battery at this time is 100%. In this embodiment, a table of correspondences between the battery type and the energy value released by the battery under the nominal capacity is pre-stored, and the type information of the target battery is obtained, and the correspondence is traversed according to the type information of the target battery. In the table, the second energy value released by the target battery corresponding to the nominal capacity can be queried.

In step S103, the ratio of the first energy value and the second energy value is calculated to generate the health status value of the target battery.

Based on the same discharge conditions, such as the same temperature environment and the same constant current parameters, the ratio of the energy values of the two batteries of the same type during the discharge process is equal to the ratio of the consumed time. In this embodiment, when the battery is in the nominal state, its corresponding health state value is 100%. Therefore, after obtaining the first energy value released by the target battery in the fully charged state, the ratio of the first energy value and the second energy value released by the target battery under the nominal capacity is calculated, namely The health status value of the target battery can be generated.

In this embodiment, the health status value SOH of the target battery can be calculated by the following relationship:

Among them, W _d is the first energy value released by the target battery in a fully charged state; W ₀ is the second energy value released by the target battery corresponding to the nominal capacity.

The method for detecting the state of battery health provided by the foregoing embodiment is based on the law of conservation of energy, by obtaining the first energy value released by the target battery in a fully charged state, and by comparing the first energy value with the second energy value By calculation, the health status value of the target battery can be generated. This method solves the discharge capacity (that is, the first energy value) of the target battery from the perspective of energy. Then, the ratio of the discharge capacity of the target battery to the discharge capacity of the target battery corresponding to the nominal capacity (ie, the second energy value) is calculated to obtain the health status value of the target battery. In this process, there is no need for complex mathematical models, the calculation accuracy is high, and there is no hard requirement for constant current load, which can reduce the requirements for testing equipment.

In some embodiments of the present application, please refer to FIG. 2. FIG. 2 is a schematic flowchart of a method for detecting the discharge capacity of the target battery in the method for detecting the battery health status provided by an embodiment of the present application. The details are as follows:

In step S201, the third energy value stored internally of the target battery in the fully charged state is acquired.

In this embodiment, the charging process of the battery can follow the law of conservation of energy, by placing the target battery in a preset temperature environment, and charging the target battery from a state of charge of 0% to a state of charge with a certain constant current parameter. 100%. Among them, the specific preset temperature environment can be set to 25°C±2°C, and the constant current parameter is set to 0.2c. As a result, the relationship between the voltage and time of the target battery during charging can be measured. Further, according to the change relationship between the voltage and time, the total energy value output by the charger during the charging process of the target battery can be calculated. According to the change relationship between the voltage and time, and the internal resistance value corresponding to the target battery, the energy consumed by the internal resistance during the charging process of the target battery can be calculated. Among them, the internal resistance value corresponding to the target battery can be obtained by measuring by using the direct current charging method or the pulse characteristics of hybrid power. According to the law of conservation of energy, the total energy value output by the charger during the charging process of the target battery is equal to the sum of the third energy value stored inside the target battery in the fully charged state and the energy value consumed by the internal resistance during the charging process of the target battery. That is, by calculating the total energy value output by the charger during the charging process of the target battery and the energy value consumed by the internal resistance during the charging process of the target battery, the third energy value internally stored in the target battery in the fully charged state can be obtained. It is understandable that the third energy value can also be obtained by other methods such as measurement or calculation, and it is not used as a limitation to the application here.

In step S202, the discharge process of the target battery is solved for energy conservation according to the third energy value, so as to calculate the first energy value released by the target battery in the fully charged state.

In this embodiment, the battery-based discharge process also follows the law of conservation of energy. Similarly, the target battery in a fully charged state is placed in the same temperature environment as the charging process, and the target battery is removed from the charge with the same constant current parameters. The state is 100% discharged to the state of charge of 0%. At this time, according to the law of conservation of energy, during the discharge process, the third energy value stored inside the target battery in the fully charged state is equal to the first energy value released by the target battery in the fully charged state and the target battery in the discharge process The sum of energy consumed due to internal resistance. That is, by combining the internal resistance value of the target battery, the discharge process of the target battery is solved for energy conservation according to the third energy value, so as to calculate the discharge process of the target battery in the fully charged state based on the discharge process. The first energy value, thereby detecting the discharge capacity of the target battery.

In some embodiments of the present application, since the charging process of the battery follows the law of conservation of energy, in this embodiment, the third energy value can be calculated by the following relationship:

W _c ＝W _b +Q _rc

In this embodiment, by charging the state of charge (SOC) of the target battery from 0% to 100% at a constant current of 0.2C in an environment with a temperature of 25°C±2°C, it can be concluded that the charging process is in progress. The relationship between the voltage and time. According to the integral calculation of the change relationship, the total energy value W _c output by the charger during the charging process of the target battery can be obtained. The specific calculation formula can be as follows:

Among them, T _c is the time required to charge the state of charge of the target battery from 0% to 100%; I _c is the constant charging current, that is, 0.2C, a constant; U _c (t) is the voltage and time during the discharge of the target battery The relationship between changes.

After the measured target cell internal resistance value R _i, to calculate a target in connection with the internal resistance value of the internal resistance of the battery charging process since the energy consumption value Q _rc, the specific formula may be as follows:

At this time, after the above calculation, the third energy value W _b stored inside the target battery in the fully charged state can be obtained as:

In some embodiments of the present application, the battery-based discharge process also follows the law of conservation of energy. In this embodiment, the first energy value can be calculated by the following relationship:

W _b ＝W _d +Q _rd

In this embodiment, the state of charge (SOC) of the target battery is discharged from 100% to 0% at a constant current of 0.2C in an environment with a temperature of 25°C±2°C. During this discharging process, the target battery is The consumed energy value Q _rd is:

Among them, T _d is the time required for the state of charge of the target battery to discharge from 100% to 0% when the target battery is fully charged; I _d is the constant discharge current, that is, 0.2C, which is equal _{to I c.}

At this time, after the above calculation, the first energy value W _d released by the target battery in the fully charged state can be obtained as:

In some embodiments of the present application, under the same ambient temperature and the same constant discharge current condition, the ratio of the energy value between two batteries of the same type is set to be equal to the ratio of the consumed time. From this, the following relationship can be obtained:

Among them, W ₀ is the second energy value released by the _{target battery under the nominal capacity; T 0} is the time required for the target battery to discharge from 100% to 0% under the nominal capacity, which is 5h (ie 1.8×10 ⁴ s).

According to the relationship that the ratio of energy value is equal to the ratio of consumed time, during the discharge process, the energy value Q _rd consumed by the target battery due to internal resistance can also be expressed as:

_{Therefore, the first energy value W d} released by the target battery in the fully charged state can also be expressed as:

In some embodiments of the present application, the table of correspondence between the preset battery type and the energy value released by the battery under the nominal capacity records the performance of multiple different types of batteries under the nominal capacity. The amount of energy released. In this embodiment, for a battery with a nominal capacity, the state of charge (SOC) of the battery can be discharged from 100% to 0% at a constant current of 0.2C in an environment with a temperature of 25°C ± 2°C . From this, the relationship between the voltage and time during the discharge process is obtained. Furthermore, by performing integral calculation according to the change relationship, the total energy value released by the battery under the nominal capacity can be obtained. In this embodiment, the total energy value is the energy value W ₀ released by the battery corresponding to the nominal capacity. In this embodiment, the energy value released by the battery corresponding to the nominal capacity can be calculated by the following relationship:

According to the above relational expressions, the energy values released by various different types of batteries under the nominal capacity are calculated, and then the type information of each different type of battery and its corresponding calculated energy value are mapped and correlated to establish A table of correspondences between the battery type and the energy value released by the battery under the nominal capacity is formed.

It can be understood that the size of the sequence number of each step in the above embodiment does not mean the order of execution. The execution sequence of each process should be determined by its function and internal logic, and should not constitute any implementation process of the embodiments of this application. limited.

In some embodiments of the present application, please refer to FIG. 3. FIG. 3 is a schematic structural diagram of a battery health status detection device provided by an embodiment of the present application. The details are as follows:

In this embodiment, the device for detecting the battery health status includes: an acquisition block 301, a processing module 302, and an execution module 303. Wherein, the acquisition module 301 is used to acquire the first energy value released by the target battery in a fully charged state. The processing module 302 is used to obtain the type information of the target battery, and query the corresponding relationship table of the preset battery type and the energy value released by the battery under the nominal capacity of the target battery. The second energy value released under the nominal capacity; the execution module 303 is configured to calculate the ratio of the first energy value to the second energy value to generate the health status value of the target battery.

The battery health status detection device corresponds to the above-mentioned battery health status detection method one-to-one, and will not be repeated here.

In some embodiments of the present application, please refer to FIG. 4, which is a schematic diagram of an electronic device that implements a method for detecting a battery health state provided by an embodiment of the present application. As shown in FIG. 4, the electronic device 4 of this embodiment includes: a processor 401, a memory 402, and a computer program 403 stored in the memory 402 and running on the processor 401, such as battery health status Testing procedures. When the processor 401 executes the computer program 402, the steps in the foregoing embodiments of the method for detecting battery health status are implemented. Alternatively, when the processor 401 executes the computer program 403, the functions of the modules/units in the foregoing device embodiments are implemented.

Exemplarily, the computer program 403 may be divided into one or more modules/units, and the one or more modules/units are stored in the memory 402 and executed by the processor 401 to complete This application. The one or more modules/units may be a series of computer program instruction segments capable of completing specific functions, and the instruction segments are used to describe the execution process of the computer program 403 in the electronic device 4. For example, the computer program 403 can be divided into:

The electronic device may include, but is not limited to, a processor 401 and a memory 402. Those skilled in the art can understand that FIG. 4 is only an example of the electronic device 4, and does not constitute a limitation on the electronic device 4. It may include more or less components than shown, or a combination of certain components, or different components. For example, the electronic device may also include input and output devices, network access devices, buses, and so on.

The so-called processor 401 may be a central processing unit (Central Processing Unit, CPU), other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (ASIC), Ready-made programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.

The memory 402 may be an internal storage unit of the electronic device 4, such as a hard disk or a memory of the electronic device 4. The memory 402 may also be an external storage device of the electronic device 4, such as a plug-in hard disk equipped on the electronic device 4, a smart memory card (Smart Media Card, SMC), and a Secure Digital (SD) Card, Flash Card, etc. Further, the memory 402 may also include both an internal storage unit of the electronic device 4 and an external storage device. The memory 402 is used to store the computer program and other programs and data required by the electronic device. The memory 402 can also be used to temporarily store data that has been output or will be output.

It should be noted that the information interaction and execution process between the above-mentioned devices/units are based on the same concept as the method embodiment of this application, and its specific functions and technical effects can be found in the method embodiment section. I won't repeat it here.

The embodiments of the present application also provide a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in each of the foregoing method embodiments can be realized.

The embodiments of the present application provide a computer program product. When the computer program product runs on a mobile terminal, the steps in the foregoing method embodiments can be realized when the mobile terminal is executed.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, only the division of the above functional units and modules is used as an example. In practical applications, the above functions can be allocated to different functional units and modules as needed. Module completion, that is, the internal structure of the device is divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist alone physically, or two or more units can be integrated into one unit. The above-mentioned integrated units can be hardware-based Formal realization can also be realized in the form of a software functional unit. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the protection scope of the present application. For the specific working process of the units and modules in the foregoing system, reference may be made to the corresponding process in the foregoing method embodiment, which will not be repeated here.

If the integrated module/unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiments and methods, and can also be completed by instructing relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the program is executed by the processor, it can implement the steps of the foregoing method embodiments. Wherein, the computer program includes computer program code, and the computer program code may be in the form of source code, object code, executable file, or some intermediate forms. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory) , Random Access Memory (RAM, Random Access Memory), electrical carrier signal, telecommunications signal, and software distribution media, etc. It should be noted that the content contained in the computer-readable medium can be appropriately added or deleted according to the requirements of the legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to the legislation and patent practice, the computer-readable medium Does not include electrical carrier signals and telecommunication signals.

In the above-mentioned embodiments, the description of each embodiment has its own focus. For parts that are not described in detail or recorded in an embodiment, reference may be made to related descriptions of other embodiments.

A person of ordinary skill in the art may realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

In the embodiments provided in this application, it should be understood that the disclosed device/terminal device and method may be implemented in other ways. For example, the device/terminal device embodiments described above are only illustrative. For example, the division of the modules or units is only a logical function division, and there may be other divisions in actual implementation, such as multiple units. Or components can be combined or integrated into another system, or some features can be omitted or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

The above-mentioned embodiments are only used to illustrate the technical solutions of the present application, not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still implement the foregoing The technical solutions recorded in the examples are modified, or some of the technical features are equivalently replaced; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the application, and should be included in Within the scope of protection of this application.

Claims

A method for detecting battery health status, which is characterized in that it includes:

Obtaining the first energy value released by the target battery in a fully charged state;

Acquire the type information of the target battery, and query the corresponding relationship table between the preset battery type and the energy value released by the battery under the nominal capacity to find out the target battery corresponding to the release under the nominal capacity The second energy value;

The ratio of the first energy value and the second energy value is calculated to generate the health status value of the target battery.
The method for detecting the state of battery health according to claim 1, wherein the step of obtaining the first energy value released by the target battery in a fully charged state comprises:

Obtain the third energy value stored internally of the target battery in a fully charged state;

The discharge process of the target battery is solved for energy conservation according to the third energy value, so as to calculate the first energy value released by the target battery in a fully charged state.
The method for detecting the state of battery health according to claim 2, wherein the step of obtaining the third energy value stored in the target battery in the fully charged state comprises:

Based on the law of energy conservation, the third energy value is calculated by the following relationship:

W c ＝W b +Q rc

Among them, W c is the total energy value output by the charger during the target battery charging process; W b is the third energy value internally stored in the target battery in the fully charged state; Q rc is the energy value consumed by the internal resistance during the target battery charging process .
The method for detecting the state of battery health according to claim 2 or 3, wherein the discharge process of the target battery is solved by energy conservation according to the third energy value to calculate the target battery The steps of releasing the first energy value in the fully charged state include:

Based on the law of conservation of energy, the first energy value is calculated by the following relationship:

W b ＝W d +Q rd

Among them, W b is the third energy value stored inside the target battery in the fully charged state; W d is the first energy value released by the target battery in the fully charged state; Q rd is the target battery's discharge process due to internal resistance. The amount of energy consumed.
The method for detecting the state of battery health according to claim 1, wherein the ratio of the first energy value and the second energy value released by the target battery under the nominal capacity is calculated to generate the The steps of describing the health status value of the target battery include:

Set under the same ambient temperature and the same constant discharge current condition, the ratio of the energy value between two batteries of the same type is equal to the ratio of the consumed time.
The method for detecting the state of battery health according to claim 5, wherein the same ambient temperature and the same constant discharge current condition comprises:

Configure the temperature to 25℃±2℃; and

Configure the constant current parameter to 0.2c.
The method for detecting the state of battery health according to claim 1, wherein the acquiring the type information of the target battery is obtained from the preset battery type and the energy value released by the battery under the nominal capacity Before the step of querying the second energy value released by the target battery corresponding to the nominal capacity in the corresponding relationship table between the two, it includes:

Establish the corresponding relationship table between the battery type and the energy value released by the battery under the nominal capacity, where the energy value released by the battery under the nominal capacity is calculated by the following relationship:

Among them, W 0 is the energy value released by the battery under the nominal capacity; T 0 is the time required for the battery to discharge from 100% to 0% under the nominal capacity, which is 5h (ie 1.8×s) ; I 0 is the constant current during discharge of the battery under the nominal capacity, that is, 0.2C, a constant; U 0 (t) is the relationship between the voltage and time during the discharge of the battery under the nominal capacity.
A device for detecting battery health status, characterized in that, the device for detecting battery health status includes:

An obtaining module, used to obtain the first energy value released by the target battery in a fully charged state;

The processing module is used to obtain the type information of the target battery, and query the correspondence table between the preset battery type and the energy value released by the battery under the nominal capacity to find out that the target battery corresponds to the nominal capacity. The second energy value released under the capacity;

The execution module is used for calculating the ratio of the first energy value and the second energy value to generate the health status value of the target battery.
An electronic device, comprising a memory, a processor, and a computer program stored in the memory and capable of running on the processor, wherein the processor executes the computer program as claimed in claims 1 to 7. Steps of any one of the methods for detecting battery health status.
A computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, wherein when the computer program is executed by a processor, it realizes the battery health status according to any one of claims 1 to 7 Steps of the detection method.