Vehicle battery degradation test method and related devices
By obtaining the target vehicle's model and daily operating conditions, a battery degradation testing strategy is determined. Tests are conducted based on actual operating conditions, solving the problem of large discrepancies between test results and actual operating conditions in existing technologies, and achieving a more realistic battery degradation performance evaluation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- VOYAH AUTOMOBILE TECH CO LTD
- Filing Date
- 2023-01-09
- Publication Date
- 2026-05-19
AI Technical Summary
Existing lithium-ion battery cycle degradation testing methods differ significantly from the operating conditions of electric vehicles, resulting in limited reference value for the test results.
The battery degradation test strategy is determined based on the target vehicle's model and daily operating conditions. By obtaining the target vehicle's model and daily operating conditions, battery degradation performance is tested based on the actual operating conditions.
This improves the realism of battery degradation testing, making the test results more consistent with actual usage scenarios and enhancing the reference value of the test results.
Smart Images
Figure CN116184217B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of vehicle battery testing, and more particularly to a method and related equipment for testing vehicle battery degradation. Background Technology
[0002] The degradation performance of lithium-ion batteries is an important evaluation indicator. Conventional cycle tests and storage tests are conducted separately, which differ from actual use. Evaluation results that are closer to real-world usage scenarios are more instructive.
[0003] Typically, lithium-ion battery cycle degradation testing methods involve performing full charge / full discharge cycles according to a specific charge-discharge regime. These tests often differ significantly from the operating conditions of electric vehicles, making the test results of limited practical reference value. Summary of the Invention
[0004] In view of the above problems, the present invention provides a vehicle battery degradation testing method and related equipment, the main purpose of which is to solve the problem of lacking a vehicle battery degradation testing method that is more suitable for the operating conditions of its own vehicle model.
[0005] To address at least one of the aforementioned technical problems, in a first aspect, the present invention provides a method for testing vehicle battery degradation, the method comprising:
[0006] Obtain the vehicle model and daily operating conditions of the target vehicle;
[0007] The battery degradation test strategy is determined based on the vehicle type and daily operating conditions of the target vehicle.
[0008] The battery degradation performance is obtained by testing based on the actual operating conditions of the target vehicle and the battery degradation test strategy.
[0009] Optional,
[0010] The operating conditions include driving, engine off and parked, and charging while parked.
[0011] The driving conditions include long-distance driving conditions and short-distance driving conditions.
[0012] The daily operating conditions refer to the percentage of different operating conditions of the target vehicle.
[0013] Optionally, the above methods also include:
[0014] The target vehicle's operating conditions are sorted according to the proportion of each operating condition.
[0015] The battery degradation testing strategy is determined based on the two operating conditions with the largest proportion.
[0016] Optionally, the battery degradation test strategy determined based on the two operating conditions with the largest proportion includes:
[0017] Discharge tests were conducted when the two operating conditions with the largest proportion included driving conditions, and the actual operating condition was driving conditions.
[0018] Storage tests were conducted when the two operating conditions with the largest proportion included engine shutdown, and the actual operating condition was engine shutdown.
[0019] Charging tests were conducted when the two operating conditions with the largest proportion included parking charging, and the actual operating condition was parking charging.
[0020] Optionally, the above methods also include:
[0021] When the sudden speed change coefficient of the target vehicle is greater than the preset sudden speed change coefficient, the battery degradation performance is obtained by testing based on the actual operating conditions of the target vehicle and the battery degradation test strategy. The sudden speed change coefficient is used to characterize the product of the sudden speed change value and the sudden speed change duration.
[0022] Optionally, the above methods also include:
[0023] When the daily temperature difference variation in the driving area of the target vehicle exceeds the preset daily temperature difference variation, the battery degradation performance is obtained by testing based on the actual operating conditions of the target vehicle and the battery degradation test strategy.
[0024] Optionally, the above methods also include:
[0025] When the seasonal temperature difference variation amplitude in the driving area of the target vehicle is greater than the preset seasonal temperature difference variation amplitude, the battery degradation performance is obtained by testing based on the actual operating conditions of the target vehicle and the battery degradation test strategy.
[0026] Secondly, embodiments of the present invention also provide a vehicle battery degradation testing device, comprising:
[0027] The acquisition unit is used to acquire the vehicle model and daily operating conditions of the target vehicle;
[0028] The determining unit is used to determine the battery degradation test strategy based on the vehicle model and daily operating conditions of the target vehicle.
[0029] The testing unit is used to conduct tests based on the actual operating conditions of the target vehicle and the battery degradation test strategy to obtain battery degradation performance.
[0030] To achieve the above objectives, according to a third aspect of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium comprising a stored program, wherein, when the program is executed by a processor, the steps of the above-described vehicle battery degradation test method are implemented.
[0031] To achieve the above objectives, according to a fourth aspect of the present invention, an electronic device is provided, comprising at least one processor and at least one memory connected to the processor; wherein the processor is configured to invoke program instructions in the memory to execute the steps of the vehicle battery degradation test method described above.
[0032] By employing the above technical solution, the vehicle battery degradation testing method and related equipment provided by this invention address the problem of the lack of a vehicle battery degradation testing method that better suits the operating conditions of a particular vehicle model. This invention obtains the target vehicle's model and daily operating conditions; determines a battery degradation testing strategy based on the target vehicle's model and daily operating conditions; and conducts tests based on the target vehicle's actual operating conditions and the battery degradation testing strategy to obtain battery degradation performance. In this solution, different battery degradation testing strategies are designed according to the operating conditions of different vehicle models, thereby solving the deficiency of existing solutions having low practical reference value for test results, making battery degradation testing more closely aligned with actual use.
[0033] Correspondingly, the vehicle battery degradation testing device, equipment, and computer-readable storage medium provided in the embodiments of the present invention also have the above-mentioned technical effects.
[0034] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description
[0035] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:
[0036] Figure 1 A flowchart illustrating a vehicle battery degradation testing method provided by an embodiment of the present invention is shown.
[0037] Figure 2 This diagram illustrates a schematic block diagram of a vehicle battery degradation testing device provided in an embodiment of the present invention.
[0038] Figure 3This diagram illustrates the composition of an electronic device for testing vehicle battery degradation according to an embodiment of the present invention. Detailed Implementation
[0039] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
[0040] To address the lack of a vehicle battery degradation testing method that better suits the operating conditions of specific vehicle models, this invention provides a vehicle battery degradation testing method, such as... Figure 1 As shown, the method includes:
[0041] S101. Obtain the vehicle model and daily operating conditions of the target vehicle;
[0042] For example, the vehicle model and daily operating conditions of the target vehicle are used as factors to consider in subsequent battery degradation tests.
[0043] S102. Determine the battery degradation test strategy based on the vehicle model and daily operating conditions of the target vehicle;
[0044] For example, different schemes are designed according to the operating conditions of different vehicle models, thereby improving the realism of the test.
[0045] S103. Conduct tests based on the actual operating conditions of the target vehicle and the battery degradation test strategy to obtain battery degradation performance.
[0046] For example, battery degradation performance obtained by testing based on the actual operating conditions of the target vehicle and the battery degradation test strategy can be more realistic, thereby solving the problem that the test results of existing solutions have low practical reference value.
[0047] By employing the above technical solution, the vehicle battery degradation testing method provided by this invention addresses the lack of a vehicle battery degradation testing method that better suits the operating conditions of a particular vehicle model. This invention obtains the target vehicle's model and daily operating conditions; determines a battery degradation testing strategy based on the target vehicle's model and daily operating conditions; and conducts tests based on the target vehicle's actual operating conditions and the battery degradation testing strategy to obtain battery degradation performance. In this solution, different battery degradation testing strategies are designed according to the operating conditions of different vehicle models, thereby solving the deficiency of existing solutions having low practical reference value for test results, making battery degradation testing more closely aligned with actual use.
[0048] In one embodiment,
[0049] The operating conditions include driving, engine off and parked, and charging while parked.
[0050] The driving conditions include long-distance driving conditions and short-distance driving conditions.
[0051] The daily operating conditions refer to the percentage of different operating conditions of the target vehicle.
[0052] For example, long-distance driving, short-distance driving, engine off and charging conditions all have different effects on the vehicle's battery. Therefore, it is necessary to obtain the proportion of different operating conditions to determine the impact of different operating conditions on the vehicle.
[0053] In one embodiment, the above method further includes:
[0054] The target vehicle's operating conditions are sorted according to the proportion of each operating condition.
[0055] The battery degradation testing strategy is determined based on the two operating conditions with the largest proportion.
[0056] For example, the two operating conditions with the largest proportion have the greatest impact on the vehicle. Therefore, the battery degradation test strategy is determined based on the two operating conditions with the largest proportion, so as to formulate a more realistic battery degradation test strategy.
[0057] In one embodiment, determining the battery degradation test strategy based on the two operating conditions with the largest proportion includes:
[0058] Discharge tests were conducted when the two operating conditions with the largest proportion included driving conditions, and the actual operating condition was driving conditions.
[0059] Storage tests were conducted when the two operating conditions with the largest proportion included engine shutdown, and the actual operating condition was engine shutdown.
[0060] Charging tests were conducted when the two operating conditions with the largest proportion included parking charging, and the actual operating condition was parking charging.
[0061] For example, if the two operating conditions with the largest proportion include driving conditions, it proves that driving conditions have the greatest impact on vehicle batteries. Therefore, discharge tests are conducted when the vehicle is actually being driven.
[0062] For example, if the two operating conditions with the largest proportion include turning off the engine and stopping the vehicle, it proves that turning off the engine and stopping the vehicle has the greatest impact on the vehicle battery. Therefore, storage tests are conducted when the vehicle is turned off and stopped.
[0063] For example, if the two operating conditions with the largest proportion include parking charging, then it proves that parking charging...
[0064] Electricity has the greatest impact on vehicle batteries. Therefore, charging tests are conducted while the vehicle is parked and charging to develop a more realistic battery degradation testing strategy.
[0065] In one embodiment, the above method further includes:
[0066] When the sudden speed change coefficient of the target vehicle is greater than the preset sudden speed change coefficient, the battery degradation performance is obtained by testing based on the actual operating conditions of the target vehicle and the battery degradation test strategy. The sudden speed change coefficient is used to characterize the product of the sudden speed change value and the sudden speed change duration.
[0067] For example, since repeated battery degradation tests can have a negative impact on the battery, this method sets the condition that the rapid speed change coefficient is greater than the preset rapid speed change coefficient to prove that the vehicle's battery may have changed. At this time, the battery degradation performance is obtained based on the actual operating conditions of the target vehicle and the battery degradation test strategy, thereby reducing the battery degradation test of the target vehicle.
[0068] In one embodiment, the above method further includes:
[0069] When the daily temperature difference variation in the driving area of the target vehicle exceeds the preset daily temperature difference variation, the battery degradation performance is obtained by testing based on the actual operating conditions of the target vehicle and the battery degradation test strategy.
[0070] For example, if the daily temperature difference variation amplitude in the driving area of the target vehicle is greater than the preset daily temperature difference variation amplitude, it proves that the vehicle's battery may be affected by the daily temperature difference variation. In this case, the battery degradation performance is obtained by testing based on the actual operating conditions of the target vehicle and the battery degradation test strategy, thereby reducing the battery degradation test of the target vehicle.
[0071] In one embodiment, the above method further includes:
[0072] When the seasonal temperature difference variation amplitude in the driving area of the target vehicle is greater than the preset seasonal temperature difference variation amplitude, the battery degradation performance is obtained by testing based on the actual operating conditions of the target vehicle and the battery degradation test strategy.
[0073] For example, if the seasonal temperature difference variation amplitude in the driving area of the target vehicle is greater than the preset seasonal temperature difference variation amplitude, it proves that the vehicle's battery may be affected by the seasonal temperature difference variation. In this case, the battery degradation performance is obtained by testing based on the actual operating conditions of the target vehicle and the battery degradation test strategy, thereby reducing the battery degradation test of the target vehicle.
[0074] Furthermore, some embodiments of this method are listed below:
[0075] Example 1
[0076] For mid-to-low-end electric vehicles with a pure electric range of ≤600 km, lithium iron phosphate batteries are used. Assuming a private user's usage patterns include urban commuting, charging while parked, long-term parking with the engine off, and short-to-medium distance travel. Assuming urban commuting accounts for approximately 30%, charging while parked for approximately 10%, long-term parking for approximately 50%, and short-to-medium distance travel for approximately 10%, the battery degradation test method designed based on these usage habits is as follows:
[0077] Monday to Friday: For city commuting, discharge at a rate of 0.1C to 2C for 20 hours (discharge phase in battery cycle test); charge at a rate of 0.1C to 3C for 0.5 to 2 hours (charging phase in battery cycle test); the rest of the time is spent parked with the engine off (battery storage test).
[0078] Saturday to Sunday: For short and medium-distance trips, discharge at 0.5C to 4C for 12 hours (discharge phase in battery cycle test), and charge at 0.1C to 3C rate for 0.5 to 2 hours (charge phase in battery cycle test); the rest of the time is spent parked and with the engine off (battery storage test).
[0079] In addition, the temperature for cyclic testing and storage testing is performed according to the seasonal temperature changes of two harsh geographical regions: cold and warm regions.
[0080] Example 2
[0081] For mid-to-low-end electric vehicles with a pure electric range of ≤600 km, lithium iron phosphate batteries are used. Assuming it's a commercial vehicle, its operating conditions include city driving, charging while parked, and parking with the engine off. Assuming city driving accounts for approximately 60%, charging while parked for approximately 10%, and long-term parking for approximately 30%, the battery degradation test method designed based on this usage pattern is as follows:
[0082] Monday to Sunday: In the city, discharge at a rate of 0.1C to 2C for 50 hours (discharge phase in battery cycle test); charge at a rate of 0.1C to 3C for 2.5 hours to 10 hours (charge phase in battery cycle test); the rest of the time is spent parked and with the engine off (battery storage test).
[0083] In addition, the temperature for cyclic testing and storage testing is performed according to the seasonal temperature changes of two harsh geographical regions: cold and warm regions.
[0084] Example 3
[0085] For mid-to-high-end electric vehicles with a pure electric range of >600 kilometers, ternary lithium batteries are used. Assuming a private user's usage patterns include urban commuting, charging while parked, long-term parking with the engine off, and short-to-medium-distance travel. Assuming urban commuting accounts for approximately 30%, charging while parked for approximately 10%, long-term parking for approximately 50%, and short-to-medium-distance travel for approximately 10%, the battery degradation test method designed based on these usage habits is as follows:
[0086] Monday to Friday: For city commuting, discharge at a rate of 0.1C to 2C for 20 hours (discharge phase in battery cycle test); charge at a rate of 0.1C to 6C for 0.1 hours to 2 hours (charging phase in battery cycle test); the rest of the time is spent parked and with the engine off (battery storage test).
[0087] Saturday to Sunday: For short and medium-distance trips, discharge at 0.5C to 4C for 12 hours (discharge phase in battery cycle test), and charge at 0.1C to 6C rate for 0.1 to 2 hours (charging phase in battery cycle test); the rest of the time is spent parked and with the engine off (battery storage test).
[0088] In addition, the temperature for cyclic testing and storage testing is performed according to the seasonal temperature changes of two harsh geographical regions: cold and warm regions.
[0089] Example 4
[0090] For mid-to-high-end electric vehicles with a pure electric range of >600 kilometers, ternary lithium batteries are used. Assuming...
[0091] For commercial use, the operating conditions include city commuting, parking and charging, long-term parking with the engine off, and short-to-medium-distance business travel. Assuming city commuting accounts for approximately 30%, parking and charging for approximately 10%, long-term parking for approximately 50%, and short-to-medium-distance business travel for approximately 50%, then...
[0092] Travel during long distances accounts for approximately 10%. Therefore, the battery degradation test method designed based on this usage habit is as follows:
[0093] Monday to Friday: For city commuting, discharge at a rate of 0.1C to 2C for 20 hours (discharge phase in battery cycle test); charge at a rate of 0.1C to 6C for 0.1 hours to 2 hours (charging phase in battery cycle test); the rest of the time is spent parked and with the engine off (battery storage test).
[0094] Saturday to Sunday: Park and turn off the engine (battery storage test).
[0095] In addition, the temperature for cyclic testing and storage testing is performed according to the seasonal temperature changes of two harsh geographical regions: cold and warm regions.
[0096] Example 5
[0097] For electric off-road vehicles, ternary lithium batteries are used. Assume their operating conditions include urban commuting, charging while parked, long-term parking with the engine off, and short-to-medium-distance off-roading. Assume urban commuting accounts for approximately 20%, charging while parked for approximately 10%, long-term parking for approximately 50%, and short-to-medium-distance travel for approximately 20%. Then, the battery degradation test method designed based on these usage habits is as follows:
[0098] Monday to Friday: For city commuting, discharge at a rate of 0.1C to 2C for 20 hours (discharge phase in battery cycle test); charge at a rate of 0.1C to 6C for 0.1 hours to 2 hours (charging phase in battery cycle test); the rest of the time is spent parked and with the engine off (battery storage test).
[0099] Saturday to Sunday: For short and medium-distance trips, discharge at 0.5C to 10C for 12 hours (discharge phase in battery cycle test), and charge at 0.1C to 6C rate for 0.1 to 2 hours (charge phase in battery cycle test); the rest of the time is spent parked and with the engine off (battery storage test).
[0100] In addition, the temperature for cyclic testing and storage testing is performed according to the seasonal temperature changes of two harsh geographical regions: cold and warm regions.
[0101] Furthermore, as a response to the above Figure 1 In addition to the implementation of the method shown, this embodiment of the invention also provides a vehicle battery degradation testing device for testing the aforementioned... Figure 1 The method shown is implemented accordingly. This device embodiment corresponds to the foregoing method embodiment. For ease of reading, this device embodiment will not repeat the details of the foregoing method embodiment, but it should be clear that the device in this embodiment can implement all the contents of the foregoing method embodiment. Figure 2 As shown, the device includes: an acquisition unit 21, a determination unit 22, and a testing unit 23, wherein...
[0102] Acquisition unit 21 is used to acquire the vehicle model and daily operating conditions of the target vehicle;
[0103] The determining unit 22 is used to determine the battery degradation test strategy based on the vehicle type and daily operating conditions of the target vehicle;
[0104] Test unit 23 is used to perform tests based on the actual operating conditions of the target vehicle and the battery degradation test strategy to obtain battery degradation performance.
[0105] For example, the operating conditions include driving, engine off and parked, and parking while charging.
[0106] The driving conditions include long-distance driving conditions and short-distance driving conditions.
[0107] The daily operating conditions refer to the percentage of different operating conditions of the target vehicle.
[0108] For example, the above-mentioned unit is also used for:
[0109] The target vehicle's operating conditions are sorted according to the proportion of each operating condition.
[0110] The battery degradation testing strategy is determined based on the two operating conditions with the largest proportion.
[0111] For example, the battery degradation test strategy determined based on the two operating conditions with the largest proportion includes:
[0112] Discharge tests were conducted when the two operating conditions with the largest proportion included driving conditions, and the actual operating condition was driving conditions.
[0113] Storage tests were conducted when the two operating conditions with the largest proportion included engine shutdown, and the actual operating condition was engine shutdown.
[0114] Charging tests were conducted when the two operating conditions with the largest proportion included parking charging, and the actual operating condition was parking charging.
[0115] For example, the above-mentioned unit is also used for:
[0116] When the sudden speed change coefficient of the target vehicle is greater than the preset sudden speed change coefficient, the battery degradation performance is obtained by testing based on the actual operating conditions of the target vehicle and the battery degradation test strategy. The sudden speed change coefficient is used to characterize the product of the sudden speed change value and the sudden speed change duration.
[0117] For example, the above-mentioned unit is also used for:
[0118] When the daily temperature difference variation in the driving area of the target vehicle exceeds the preset daily temperature difference variation, the battery degradation performance is obtained by testing based on the actual operating conditions of the target vehicle and the battery degradation test strategy.
[0119] For example, the above-mentioned unit is also used for:
[0120] When the seasonal temperature difference variation amplitude in the driving area of the target vehicle is greater than the preset seasonal temperature difference variation amplitude, the battery degradation performance is obtained by testing based on the actual operating conditions of the target vehicle and the battery degradation test strategy.
[0121] By employing the above technical solution, the vehicle battery degradation testing device provided by this invention addresses the problem of the lack of a vehicle battery degradation testing method that better suits the operating conditions of a particular vehicle model. This invention obtains the target vehicle's model and daily operating conditions; determines a battery degradation testing strategy based on the target vehicle's model and daily operating conditions; and performs testing based on the target vehicle's actual operating conditions and the battery degradation testing strategy to obtain battery degradation performance. In this solution, different battery degradation testing strategies are designed according to the operating conditions of different vehicle models, thereby solving the deficiency of existing solutions having low practical reference value for test results, making battery degradation testing more closely aligned with actual use.
[0122] The processor contains a kernel, which retrieves the corresponding program units from memory. One or more kernels can be configured, and by adjusting kernel parameters, a vehicle battery degradation testing method can be implemented, addressing the lack of a vehicle battery degradation testing method more closely suited to the operating conditions of specific vehicle models.
[0123] This invention provides a computer-readable storage medium including a stored program that, when executed by a processor, implements the vehicle battery degradation test method.
[0124] This invention provides a processor for running a program, wherein the program executes the vehicle battery degradation test method during runtime.
[0125] This invention provides an electronic device, which includes at least one processor and at least one memory connected to the processor; wherein the processor is used to call program instructions in the memory to execute the vehicle battery degradation test method described above.
[0126] This invention provides an electronic device 30, such as... Figure 3 As shown, the electronic device includes at least one processor 301, and at least one memory 302 and bus 303 connected to the processor; wherein, the processor 301 and the memory 302 communicate with each other through the bus 303; the processor 301 is used to call program instructions in the memory to execute the above-mentioned vehicle battery degradation test method.
[0127] The smart electronic devices mentioned in this article can be PCs, tablets, mobile phones, etc.
[0128] This application also provides a computer program product, which, when executed on a process management electronic device, is suitable for executing a program that initializes the following method steps:
[0129] Obtain the vehicle model and daily operating conditions of the target vehicle;
[0130] The battery degradation test strategy is determined based on the vehicle type and daily operating conditions of the target vehicle.
[0131] The battery degradation performance is obtained by testing based on the actual operating conditions of the target vehicle and the battery degradation test strategy.
[0132] Furthermore,
[0133] The operating conditions include driving, engine off and parked, and charging while parked.
[0134] The driving conditions include long-distance driving conditions and short-distance driving conditions.
[0135] The daily operating conditions refer to the percentage of different operating conditions of the target vehicle.
[0136] Furthermore, the above methods also include:
[0137] The target vehicle's operating conditions are sorted according to the proportion of each operating condition.
[0138] The battery degradation testing strategy is determined based on the two operating conditions with the largest proportion.
[0139] Furthermore, the battery degradation test strategy determined based on the two operating conditions with the largest proportion includes:
[0140] Discharge tests were conducted when the two operating conditions with the largest proportion included driving conditions, and the actual operating condition was driving conditions.
[0141] Storage tests were conducted when the two operating conditions with the largest proportion included engine shutdown, and the actual operating condition was engine shutdown.
[0142] Charging tests were conducted when the two operating conditions with the largest proportion included parking charging, and the actual operating condition was parking charging.
[0143] Furthermore, the above methods also include:
[0144] When the sudden speed change coefficient of the target vehicle is greater than the preset sudden speed change coefficient, the battery degradation performance is obtained by testing based on the actual operating conditions of the target vehicle and the battery degradation test strategy. The sudden speed change coefficient is used to characterize the product of the sudden speed change value and the sudden speed change duration.
[0145] Furthermore, the above methods also include:
[0146] When the daily temperature difference variation in the driving area of the target vehicle exceeds the preset daily temperature difference variation, the battery degradation performance is obtained by testing based on the actual operating conditions of the target vehicle and the battery degradation test strategy.
[0147] Furthermore, the above methods also include:
[0148] When the seasonal temperature difference variation amplitude in the driving area of the target vehicle is greater than the preset seasonal temperature difference variation amplitude, the battery degradation performance is obtained by testing based on the actual operating conditions of the target vehicle and the battery degradation test strategy.
[0149] It should be noted that the descriptions of each embodiment in the above embodiments have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.
[0150] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.
[0151] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create a machine for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.
[0152] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.
[0153] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.
[0154] This application also provides a computer program product, which includes computer software instructions that, when executed on a processing device, cause the processing device to perform actions such as... Figure 1 The control flow of the memory in the corresponding embodiment.
[0155] A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that a computer can store or a data storage device such as a server or data center that integrates one or more available media. The available medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state disk (SSD)).
[0156] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.
[0157] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, or indirect coupling or communication connection between apparatuses or units, and may be electrical, mechanical, or other forms.
[0158] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.
[0159] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.
[0160] If the integrated unit is implemented as 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 technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.
[0161] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions 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 this application.
Claims
1. A method for testing vehicle battery degradation, characterized in that, include: Obtain the vehicle model and daily operating conditions of the target vehicle; The battery degradation test strategy is determined based on the vehicle type and daily operating conditions of the target vehicle. The battery degradation performance is obtained by testing based on the actual operating conditions of the target vehicle and the battery degradation test strategy. The operating conditions include driving, engine off and parked, and charging while parked. The driving conditions include long-distance driving conditions and short-distance driving conditions. The daily operating conditions refer to the percentage of different operating conditions of the target vehicle. The target vehicle's operating conditions are sorted according to the proportion of each operating condition. The battery degradation test strategy is determined based on the two operating conditions with the largest proportion. The battery degradation test strategy determined based on the two operating conditions with the largest proportion includes: Discharge tests were conducted when the two operating conditions with the largest proportion included driving conditions, and the actual operating condition was driving conditions. Storage tests were conducted when the two operating conditions with the largest proportion included engine shutdown, and the actual operating condition was engine shutdown. Charging tests were conducted when the two operating conditions with the largest proportion included parking charging, and the actual operating condition was parking charging. When the sudden speed change coefficient of the target vehicle is greater than the preset sudden speed change coefficient, the battery degradation performance is obtained by testing based on the actual operating conditions of the target vehicle and the battery degradation test strategy. The sudden speed change coefficient is used to characterize the product of the sudden speed change value and the sudden speed change duration. When the daily temperature difference variation amplitude in the driving area of the target vehicle is greater than the preset daily temperature difference variation amplitude, the battery degradation performance is obtained by testing based on the actual operating conditions of the target vehicle and the battery degradation test strategy. When the seasonal temperature difference variation amplitude in the driving area of the target vehicle is greater than the preset seasonal temperature difference variation amplitude, the battery degradation performance is obtained by testing based on the actual operating conditions of the target vehicle and the battery degradation test strategy.
2. A vehicle battery degradation testing device, characterized in that, include: The acquisition unit is used to acquire the vehicle model and daily operating conditions of the target vehicle; The determining unit is used to determine the battery degradation test strategy based on the vehicle model and daily operating conditions of the target vehicle. The testing unit is used to conduct tests based on the actual operating conditions of the target vehicle and the battery degradation test strategy to obtain battery degradation performance. The operating conditions include driving, engine off and parked, and charging while parked. The driving conditions include long-distance driving conditions and short-distance driving conditions. The daily operating conditions refer to the percentage of different operating conditions of the target vehicle. The target vehicle's operating conditions are sorted according to the proportion of each operating condition. The battery degradation test strategy is determined based on the two operating conditions with the largest proportion. The battery degradation test strategy determined based on the two operating conditions with the largest proportion includes: Discharge tests were conducted when the two operating conditions with the largest proportion included driving conditions, and the actual operating condition was driving conditions. Storage tests were conducted when the two operating conditions with the largest proportion included engine shutdown, and the actual operating condition was engine shutdown. Charging tests were conducted when the two operating conditions with the largest proportion included parking charging, and the actual operating condition was parking charging. When the sudden speed change coefficient of the target vehicle is greater than the preset sudden speed change coefficient, the battery degradation performance is obtained by testing based on the actual operating conditions of the target vehicle and the battery degradation test strategy. The sudden speed change coefficient is used to characterize the product of the sudden speed change value and the sudden speed change duration. When the daily temperature difference variation amplitude in the driving area of the target vehicle is greater than the preset daily temperature difference variation amplitude, the battery degradation performance is obtained by testing based on the actual operating conditions of the target vehicle and the battery degradation test strategy. When the seasonal temperature difference variation amplitude in the driving area of the target vehicle is greater than the preset seasonal temperature difference variation amplitude, the battery degradation performance is obtained by testing based on the actual operating conditions of the target vehicle and the battery degradation test strategy.
3. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein, when the program is executed by a processor, the steps of the vehicle battery degradation test method as described in claim 1 are implemented.
4. An electronic device, characterized in that, The electronic device includes at least one processor and at least one memory connected to the processor; wherein the processor is used to call program instructions in the memory to execute the steps of the vehicle battery degradation test method as described in claim 1.