Method, device and electronic device for determining battery health status

Abstract

The present invention provides a method, device and electronic device for determining a battery health state, and relates to the technical field of battery pack application, including: determining the annual battery capacity decay, annual mileage, and mileage corresponding to the battery discharge capacity per ampere-hour of a current vehicle based on a preset warranty standard; determining the mileage traveled and the mileage not traveled of the current vehicle under the preset warranty standard according to the target warranty standard and annual mileage of the current vehicle; determining the first capacity decay corresponding to the mileage traveled according to the target warranty standard and the annual battery capacity decay of the current vehicle; determining the second capacity decay under cycle endurance conditions according to the mileage not traveled and the mileage corresponding to the battery discharge capacity per ampere-hour; determining the battery health state of the current vehicle under the target warranty standard based on the first capacity decay and the second capacity decay, and more accurately obtaining a battery health state that meets multiple warranty requirements, so as to be used as a detection indicator for various scenarios.

Description

Technical Field

[0001] The present invention relates to the technical field of battery pack applications, and in particular to a method, device and electronic device for determining a battery health state. Background Art

[0002] With the development of vehicle technology, electric vehicles are widely used in current daily life. Regulations and plans for quality assurance have been introduced in vehicle production, sales, after-sales maintenance and other links.

[0003] However, the inventors have found that today, vehicle batteries have higher application requirements. That is, on the basis of the original warranty standards, it is necessary to ensure that the vehicle reaches the corresponding battery health status within a certain period of use to meet the current application needs. Therefore, how to determine the battery health status more accurately to meet more warranty requirements has become an urgent problem to be solved. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a method, device and electronic device for determining the health status of a battery, which can more accurately derive the health status of a battery that meets multiple warranty requirements and can be used as a detection indicator for various application scenarios.

[0005] In a first aspect, an embodiment provides a method for determining a battery health state, the method comprising:

[0006] Based on the preset warranty standards, determine the annual battery capacity decay, annual mileage, and mileage corresponding to the battery's discharge capacity per ampere-hour of the current vehicle;

[0007] Determining the mileage that has been driven and the mileage that has not been driven of the current vehicle under the preset warranty standard according to the target warranty standard of the current vehicle and the annual mileage;

[0008] Determining a first capacity decay corresponding to the traveled mileage according to the target warranty standard and the annual battery capacity decay of the current vehicle;

[0009] Determining a second capacity decay under a cycle durability condition according to the untraveled mileage and the mileage corresponding to the discharge capacity per ampere-hour of the battery;

[0010] Based on the first capacity decay and the second capacity decay, a battery health state of the current vehicle under the target warranty standard is determined.

[0011] In some embodiments, the step of determining the mileage traveled and the mileage not traveled of the current vehicle under the preset warranty standard according to the target warranty standard of the current vehicle and the annual mileage includes:

[0012] Determining the mileage of the current vehicle under the preset warranty standard according to the product of the target service life in the target warranty standard of the current vehicle and the annual mileage;

[0013] The mileage not traveled by the current vehicle under the preset warranty standard is determined based on the difference between the target mileage in the target warranty standard of the current vehicle and the mileage traveled.

[0014] In some embodiments, the step of determining the second capacity fade under the cycle durability condition according to the mileage not driven and the mileage corresponding to the discharge capacity per ampere-hour of the battery comprises:

[0015] Determining the discharge capacity corresponding to the mileage not traveled according to the ratio of the mileage not traveled to the mileage corresponding to the discharge capacity per ampere-hour of the battery;

[0016] A second capacity fade under a cycle endurance condition is determined according to the discharge capacity.

[0017] In some embodiments, the step of determining the second capacity fade under the cycle durability condition according to the discharge capacity includes:

[0018] Substitute the discharge capacity into the following formula to determine the second capacity fade under cycle durability conditions:

[0019]

[0020] Among them, Q Cycle is the second capacity decay, A, Z, Ea are calibration coefficients, Ah is the discharge capacity, and T is the temperature.

[0021] In some embodiments, the method comprises:

[0022] The battery quality of the vehicle within the target service life is detected based on the battery health status.

[0023] In some embodiments, the preset warranty standard includes a preset service life, a preset mileage, and a preset battery health status; based on the preset warranty standard, the step of determining the annual battery capacity attenuation, annual mileage, and mileage corresponding to the battery discharge capacity per ampere-hour of the current vehicle includes:

[0024] Determining the annual mileage according to the preset service life and the preset mileage;

[0025] Determining an annual battery capacity decay of the current vehicle according to the preset battery health status and the preset service life;

[0026] The mileage corresponding to the discharge capacity per ampere-hour of the battery of the current vehicle is determined according to the discharge amount of the current vehicle under the cycle endurance condition and the preset mileage.

[0027] In some embodiments, the target warranty standards include a target service life of 3 years and a target mileage of 100,000 kilometers, a target service life of 3 years and a target mileage of 120,000 kilometers, a target service life of 3 years and a target mileage of 200,000 kilometers, and a target service life of 10 years and a target mileage of 200,000 kilometers.

[0028] In a second aspect, an embodiment provides a device for determining a battery health state, the device comprising:

[0029] The first determination module determines the annual battery capacity attenuation, annual mileage, and mileage corresponding to the battery discharge capacity per ampere-hour of the current vehicle based on a preset warranty standard;

[0030] A second determination module determines the mileage that has been driven and the mileage that has not been driven of the current vehicle under the preset warranty standard according to the target warranty standard of the current vehicle and the annual mileage;

[0031] A third determination module determines a first capacity decay corresponding to the mileage traveled according to the target warranty standard and the annual battery capacity decay of the current vehicle;

[0032] a fourth determination module, determining a second capacity decay under a cycle durability condition according to the untraveled mileage and the mileage corresponding to the discharge capacity per ampere-hour of the battery;

[0033] A fifth determination module determines a battery health state of the current vehicle under the target warranty standard based on the first capacity decay and the second capacity decay.

[0034] In a third aspect, an embodiment provides an electronic device, including a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and when the processor executes the computer program, the steps of the method described in any of the aforementioned implementation methods are implemented.

[0035] In a fourth aspect, an embodiment provides a machine-readable storage medium, wherein the machine-readable storage medium stores machine-executable instructions. When the machine-executable instructions are called and executed by a processor, the machine-executable instructions prompt the processor to implement the steps of the method described in any one of the aforementioned implementations.

[0036] A method, device and electronic device for determining a battery health state provided by an embodiment of the present invention determine the annual battery capacity decay, annual mileage and mileage corresponding to the battery discharge capacity per ampere-hour corresponding to the vehicle through the existing preset warranty standard of the current vehicle, and calculate the mileage that the current vehicle can travel and the mileage that cannot be met according to the preset warranty standard according to the requirements of the target warranty standard, and calculate the first capacity decay corresponding to the mileage traveled and the second capacity decay corresponding to the mileage that still needs to be met under the cycle durability condition respectively. Based on the first capacity decay and the second capacity decay, the battery health state that meets the target warranty standard can be determined at the same time. The above method can more accurately determine the battery health state corresponding to multiple target warranty standards, and use this as a warranty indicator for application in various industries.

[0037] Other features and advantages of the present disclosure will be set forth in the following description, or some features and advantages may be inferred or unambiguously determined from the description, or may be learned by implementing the above-mentioned technology of the present disclosure.

[0038] In order to make the above-mentioned objectives, features and advantages of the present disclosure more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0040] Figure 1 A flow chart of a method for determining a battery health status provided by an embodiment of the present invention;

[0041] Figure 2 A schematic diagram of a cyclic durability working condition application process provided by an embodiment of the present invention;

[0042] Figure 3 A functional module diagram of a device for determining a battery health status provided by an embodiment of the present invention;

[0043] Figure 4 A schematic diagram of the hardware architecture of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] With the development of vehicle technology and people's pursuit of vehicle safety, the battery warranty standards for electric vehicles may be gradually updated. At present, new battery warranty standards have been issued. How to accurately detect the battery health status of the vehicle in order to determine whether it meets the battery warranty standards, or how to determine the battery health status that meets the battery warranty standards, and use the battery health status as the standard for judging batteries in various industry application fields. For example, the vehicle seller uses the precise battery health status parameter value that the vehicle can meet as a selling point to attract more customers. For example, the vehicle repair 4S shop accurately detects the battery health status of the vehicle to be repaired to determine whether the vehicle to be repaired meets its warranty requirements, while protecting the interests of both the repair shop and the vehicle user.

[0046] Based on this, a method, device and electronic device for determining the health status of a battery provided by an embodiment of the present invention can solve the problem in the prior art that it is impossible to accurately determine the health status of a battery according to a variety of different warranty requirements.

[0047] To facilitate understanding of this embodiment, a method for determining the battery health status disclosed in an embodiment of the present invention is first introduced in detail. This method can be applied to controllers, vehicle management systems, battery management systems, motor controllers and other intelligent devices.

[0048] Figure 1 A flow chart of a method for determining a battery health status provided by an embodiment of the present invention.

[0049] like Figure 1 As shown, the method comprises the following steps:

[0050] Step S102, based on the preset warranty standard, determine the annual battery capacity decay, annual mileage, and mileage corresponding to the battery discharge capacity per ampere-hour of the current vehicle.

[0051] Among them, the preset warranty standards can be understood as existing historical warranty standards. For example, the current vehicle needs to meet the requirement of traveling 150,000 kilometers during its eight years of use, and its battery health status SOH must be greater than or equal to seventy percent.

[0052] In some embodiments, the preset warranty standards include a preset service life, a preset mileage, and a preset battery health status.

[0053] Exemplarily, step S102 may include the following steps:

[0054] Step 1.1), according to the preset service life and the preset mileage, determine the annual mileage. According to the preset service life of 8 years and the preset mileage of 150,000 kilometers, it can be known from the ratio of the two that the annual mileage is 18,750 kilometers / year.

[0055] Step 1.2), determining the annual battery capacity decay of the current vehicle based on the preset battery health status and the preset service life.

[0056] The preset battery health status is 70%, and the preset service life is 8 years.

[0057] Step 1.3), determining the mileage corresponding to the discharge capacity per ampere-hour of the battery of the current vehicle according to the discharge amount of the current vehicle under the cycle endurance condition and the preset mileage.

[0058] For example, the discharge capacity in the actual machine endurance is 113750Ah, which corresponds to the preset mileage of 150,000 kilometers. That is, the mileage corresponding to each ampere-hour of the battery's discharge capacity is 1.3.

[0059] Step S104, determining the mileage already traveled and the mileage not traveled of the current vehicle under the preset warranty standard according to the target warranty standard of the current vehicle and the annual mileage.

[0060] In some embodiments, the target warranty standards include a target service life of 2 years and a target mileage of 50,000 kilometers, a target service life of 3 years and a target mileage of 100,000 kilometers, a target service life of 3 years and a target mileage of 120,000 kilometers, a target service life of 3 years and a target mileage of 200,000 kilometers, and a target service life of 10 years and a target mileage of 200,000 kilometers, to meet the needs of various application scenarios.

[0061] Here, the target warranty standard is described as a target service life of 2 years and a target mileage of 50,000 kilometers. For example, step S104 can be implemented by the following steps:

[0062] Step 2.1) Determine the mileage of the current vehicle under the preset warranty standard based on the product of the target service life in the target warranty standard of the current vehicle and the annual mileage.

[0063] Among them, the annual mileage is 18,750 kilometers / year * the target service life is 2 years = the mileage already traveled is 37,500 kilometers; that is, according to the preset warranty standard, 37,500 kilometers of the target warranty standard can be completed.

[0064] Step 2.2), based on the difference between the target mileage in the target warranty standard of the current vehicle and the mileage traveled, determine the mileage not traveled of the current vehicle under the preset warranty standard.

[0065] Among them, the target mileage is 50,000 kilometers - the mileage already traveled is 37,500 kilometers = the mileage not traveled is 12,500 kilometers, that is, in order to achieve the target quality assurance standard, a mileage of 12,500 kilometers is required.

[0066] Step S106, determining a first capacity decay corresponding to the mileage traveled according to the target warranty standard and the annual battery capacity decay of the current vehicle.

[0067] According to the product of the target mileage of 2 years in the target warranty standard and the annual battery capacity decay of 3.75%, the first capacity decay of 7.5% is obtained.

[0068] Step S108, determining a second capacity decay under a cycle endurance condition according to the mileage not traveled and the mileage corresponding to the discharge capacity per ampere-hour of the battery.

[0069] Exemplarily, step S108 further includes the following steps:

[0070] Step 3.1), determining the discharge capacity corresponding to the mileage not traveled according to the ratio of the mileage not traveled and c.

[0071] in, That is, if you want to complete the untraveled mileage according to the target warranty standard, you will need to consume a discharge capacity of 9700Ah.

[0072] Step 3.2), determining a second capacity decay under a cycle endurance condition according to the discharge capacity.

[0073] In some embodiments, the above discharge capacity is substituted into the following formula to determine the second capacity fade under the cycle endurance condition:

[0074]

[0075] Among them, Q Cycle is the second capacity decay, A, Z, Ea are calibration coefficients, Ah is the discharge capacity, and T is the temperature. Here, the discharge capacity of 9700Ah is substituted into the formula to obtain the second capacity decay of 3.936%.

[0076] In actual application, the formula calibration under the cycle durability condition can be achieved through the following steps: Figure 2 As shown:

[0077] The fully charged battery was discharged at a constant current of 91A for 10 minutes; charged at a constant power of 7kW to 393.6V; charged at a constant voltage of 393.6V until the current dropped to 7.65A; left for 5 minutes; then discharged at a constant current of 91A for 10 minutes; charged at a constant power of 7kW to 393.6V; charged at a constant voltage of 393.6V until the current dropped to 7.65A; left for 5 minutes;

[0078] The above process was repeated 2168 times, wherein the battery was subjected to standard charge and discharge every 100 times.

[0079] Finally, the calibration coefficient can be: A = 0.001375; Ea 1 =-942.6; Z = 0.7114.

[0080] Step S110, determining a battery health state of the current vehicle under a target warranty standard based on the first capacity decay and the second capacity decay.

[0081] Among them, the battery health status can be understood as (State Of Health, SOH), that is, the battery capacity, health, and performance status, or the percentage of the battery's full charge capacity relative to the rated capacity.

[0082] Exemplarily, the sum of the first capacity decay of 7.5% and the second capacity decay of 3.936% gives a total decay of 11.436%. Therefore, the battery state of health SOH under the target quality assurance standard is SOH=100%-11.436%=88.564%.

[0083] In a preferred embodiment of actual application, the annual battery capacity decay, annual mileage, and mileage corresponding to the battery discharge capacity per ampere-hour corresponding to the vehicle are determined through the existing preset warranty standards of the current vehicle, and according to the requirements of the target warranty standards, the mileage that the current vehicle can travel and the mileage that cannot be met according to the preset warranty standards are calculated, and the first capacity decay corresponding to the mileage traveled and the second capacity decay corresponding to the mileage that still needs to be met under the cycle endurance condition are calculated respectively. Based on the first capacity decay and the second capacity decay, the battery health status that meets the target warranty standard can be determined at the same time. The above method can more accurately determine the battery health status corresponding to multiple target warranty standards, and use this as a warranty indicator for application in various industries.

[0084] In some embodiments, the battery health status can be used as a verification indicator corresponding to different warranty requirements to detect the current battery health status of the user's vehicle and determine the compensation status. Exemplarily, the above method also includes:

[0085] Step 4.1), based on the battery health status, the battery quality of the vehicle under the target service life is detected.

[0086] For example, the vehicle should meet the warranty requirements of a target service life of 2 years and a target mileage of 50,000 kilometers, and the battery health status should reach 88.564%. At this time, if it is detected that the current vehicle service life is less than or equal to 2 years, but the battery health status does not reach 88.564%, compensation can be made to the user.

[0087] In some embodiments, according to an embodiment of the present invention, the SOH warranty values ​​corresponding to different warranty conditions can be obtained based on the parameter values ​​corresponding to the existing historical warranty standards, so as to provide reference indicators for various application scenarios, as shown in Table 1:

[0088] Table 1

[0089]

[0090]

[0091] like Figure 3 As shown, the embodiment of the present invention further provides a device 200 for determining a battery health state, the device comprising:

[0092] The first determination module 201 determines the annual battery capacity decay, annual mileage, and mileage corresponding to the battery discharge capacity per ampere-hour of the current vehicle based on a preset warranty standard;

[0093] A second determination module 202 determines the mileage that has been driven and the mileage that has not been driven of the current vehicle under the preset warranty standard according to the target warranty standard of the current vehicle and the annual mileage;

[0094] A third determination module 203 determines a first capacity decay corresponding to the traveled mileage according to the target warranty standard and the annual battery capacity decay of the current vehicle;

[0095] A fourth determination module 204 determines a second capacity decay under a cycle durability condition according to the untraveled mileage and the mileage corresponding to the discharge capacity per ampere-hour of the battery;

[0096] The fifth determination module 205 determines the battery health state of the current vehicle under the target warranty standard based on the first capacity decay and the second capacity decay.

[0097] In some embodiments, the second determination module 202 is further specifically used to determine the mileage of the current vehicle under the preset warranty standard based on the product of the target service life in the target warranty standard of the current vehicle and the annual mileage; and determine the mileage of the current vehicle not traveled under the preset warranty standard based on the difference between the target mileage in the target warranty standard of the current vehicle and the mileage traveled.

[0098] In some embodiments, the fourth determination module 204 is further specifically used to determine the discharge capacity corresponding to the mileage not driven based on the ratio of the mileage not driven and the mileage corresponding to the discharge capacity per ampere-hour of the battery; and determine the second capacity attenuation under the cycle endurance condition based on the discharge capacity.

[0099] In some embodiments, the fourth determination module 204 is further specifically configured to substitute the discharge capacity into the following formula to determine the second capacity decay under the cycle endurance condition:

[0100]

[0101] Among them, Q Cycle is the second capacity decay, A, Z, Ea are calibration coefficients, Ah is the discharge capacity, and T is the temperature.

[0102] In some embodiments, the device further includes a detection module for detecting the battery quality of the vehicle within a target service life based on the battery health status.

[0103] In some embodiments, the preset warranty standards include a preset service life, a preset mileage and a preset battery health status; the first determination module 201 is also specifically used to determine the annual mileage based on the preset service life and the preset mileage; determine the annual battery capacity decay of the current vehicle based on the preset battery health status and the preset service life; determine the mileage corresponding to the battery discharge capacity per ampere-hour of the current vehicle based on the discharge amount of the current vehicle under the cycle endurance condition and the preset mileage.

[0104] In some embodiments, the target warranty standards include a target service life of 3 years and a target mileage of 100,000 kilometers, a target service life of 3 years and a target mileage of 120,000 kilometers, a target service life of 3 years and a target mileage of 200,000 kilometers, and a target service life of 10 years and a target mileage of 200,000 kilometers.

[0105] Figure 4 Schematic diagram of the hardware architecture of the electronic device 300 provided in an embodiment of the present invention. Figure 4As shown, the electronic device 300 includes: a machine-readable storage medium 301 and a processor 302, and may also include a non-volatile storage medium 303, a communication interface 304 and a bus 305; wherein the machine-readable storage medium 301, the processor 302, the non-volatile storage medium 303 and the communication interface 304 complete mutual communication through the bus 305. The processor 302 can execute the method for determining the battery health state described in the above embodiment by reading and executing the machine-executable instructions for determining the battery health state in the machine-readable storage medium 301.

[0106] The machine-readable storage medium mentioned in this article can be any electronic, magnetic, optical or other physical storage device that can contain or store information, such as executable instructions, data, etc. For example, the machine-readable storage medium can be: RAM (Radom Access Memory), volatile memory, non-volatile memory, flash memory, storage drive (such as hard disk drive), any type of storage disk (such as CD, DVD, etc.), or similar storage medium, or a combination thereof.

[0107] The non-volatile medium may be a non-volatile memory, a flash memory, a storage drive (such as a hard drive), any type of storage disk (such as a CD, DVD, etc.), or a similar non-volatile storage medium, or a combination thereof.

[0108] It can be understood that the specific operation methods of each functional module in this embodiment can refer to the detailed description of the corresponding steps in the above method embodiment, and will not be repeated here.

[0109] The computer-readable storage medium provided in the embodiment of the present invention stores a computer program. When the computer program code is executed, the method for determining the battery health status described in any of the above embodiments can be implemented. The specific implementation can be found in the method embodiment, which will not be repeated here.

[0110] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system and device described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0111] In addition, in the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0112] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0113] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present invention, which are used to illustrate the technical solutions of the present invention rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the aforementioned embodiments, those of ordinary skill in the art should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the aforementioned embodiments within the technical scope disclosed by the present invention, or can easily conceive of changes, or make equivalent replacements for some of the technical features therein. Such modifications, changes or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the protection scope of the present invention.

Claims

1. A method for determining a battery health status, characterized in that: The method comprises: Based on the preset warranty standards, determine the annual battery capacity decay, annual mileage, and mileage corresponding to the battery's discharge capacity per ampere-hour of the current vehicle; Determining the mileage that has been driven and the mileage that has not been driven of the current vehicle under the preset warranty standard according to the target warranty standard of the current vehicle and the annual mileage; Determining a first capacity decay corresponding to the traveled mileage according to the target warranty standard and the annual battery capacity decay of the current vehicle; Determining a second capacity decay under a cycle durability condition according to the untraveled mileage and the mileage corresponding to the discharge capacity per ampere-hour of the battery; Based on the first capacity decay and the second capacity decay, a battery health state of the current vehicle under the target warranty standard is determined.

2. The method according to claim 1, characterized in that The step of determining the mileage traveled and the mileage not traveled of the current vehicle under the preset warranty standard according to the target warranty standard of the current vehicle and the annual mileage includes: Determining the mileage of the current vehicle under the preset warranty standard according to the product of the target service life in the target warranty standard of the current vehicle and the annual mileage; The mileage not traveled by the current vehicle under the preset warranty standard is determined based on the difference between the target mileage in the target warranty standard of the current vehicle and the mileage traveled.

3. The method according to claim 1, characterized in that The step of determining a second capacity decay under a cycle durability condition according to the untraveled mileage and the mileage corresponding to the discharge capacity per ampere-hour of the battery comprises: Determining the discharge capacity corresponding to the mileage not traveled according to the ratio of the mileage not traveled to the mileage corresponding to the discharge capacity per ampere-hour of the battery; A second capacity fade under a cycle endurance condition is determined according to the discharge capacity.

4. The method according to claim 3, characterized in that The step of determining a second capacity decay under a cycle durability condition according to the discharge capacity comprises: Substitute the discharge capacity into the following formula to determine the second capacity fade under cycle durability conditions: Among them, Q Cycle is the second capacity decay, A, Z, Ea are calibration coefficients, Ah is the discharge capacity, and T is the temperature.

5. The method according to claim 1, characterized in that The method further comprises: The battery quality of the vehicle within the target service life is detected based on the battery health status.

6. The method according to claim 1, characterized in that The preset warranty standards include preset service life, preset mileage and preset battery health status; Based on the preset warranty standard, the steps of determining the annual battery capacity attenuation, annual mileage, and mileage corresponding to the battery discharge capacity per ampere-hour of the current vehicle include: Determining the annual mileage according to the preset service life and the preset mileage; Determining an annual battery capacity decay of the current vehicle according to the preset battery health status and the preset service life; The mileage corresponding to the discharge capacity per ampere-hour of the battery of the current vehicle is determined according to the discharge amount of the current vehicle under the cycle endurance condition and the preset mileage.

7. The method according to claim 1, characterized in that The target warranty standards include a target service life of 3 years and a target mileage of 100,000 kilometers, a target service life of 3 years and a target mileage of 120,000 kilometers, a target service life of 3 years and a target mileage of 200,000 kilometers, and a target service life of 10 years and a target mileage of 200,000 kilometers.

8. A device for determining a battery health status, characterized in that: The device comprises: The first determination module determines the annual battery capacity attenuation, annual mileage, and mileage corresponding to the battery discharge capacity per ampere-hour of the current vehicle based on a preset warranty standard; A second determination module determines the mileage that has been driven and the mileage that has not been driven of the current vehicle under the preset warranty standard according to the target warranty standard of the current vehicle and the annual mileage; A third determination module determines a first capacity decay corresponding to the mileage traveled according to the target warranty standard and the annual battery capacity decay of the current vehicle; a fourth determination module, determining a second capacity decay under a cycle durability condition according to the untraveled mileage and the mileage corresponding to the discharge capacity per ampere-hour of the battery; A fifth determination module determines a battery health state of the current vehicle under the target warranty standard based on the first capacity decay and the second capacity decay.

9. An electronic device comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A machine-readable storage medium, characterized in that: The machine-readable storage medium stores machine-executable instructions. When the machine-executable instructions are called and executed by a processor, the machine-executable instructions prompt the processor to implement the steps of the method described in any one of claims 1 to 7.

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