A battery life test method and apparatus

Abstract

The application discloses a battery life test method and device, which comprises the following steps: determining a first proportion of front-drive output power in total output power and a second proportion of rear-drive output power in total output power of a target vehicle, wherein the sum of the first proportion and the second proportion is equal to 1; and then performing cycle life test on the battery of the target vehicle according to the first proportion of front-drive output power and the second proportion of rear-drive output power of the target vehicle. Thus, the output power of the front-drive and rear-drive of the four-wheel drive power battery pack in the actual use scene can be simulated better, and the reliability test and verification of the front-drive and rear-drive electrical assembly in the long-term use process of the four-wheel drive battery pack can be realized, which is more in line with the real situation of battery use.

Description

Technical Field

[0001] This invention relates to the field of battery testing technology, and in particular to a battery life testing method and apparatus. Background Technology

[0002] As the name suggests, four-wheel drive new energy vehicles can use all four wheels as drive wheels to provide forward power for the vehicle, greatly improving the vehicle's road adaptability.

[0003] Due to adjustments in the power of the front and rear motors and the overall power distribution of the vehicle, the four-wheel drive battery pack will dynamically output different amounts of power according to actual needs.

[0004] However, current battery testing for new energy vehicles does not consider the differences between four-wheel drive and two-wheel drive battery packs. Furthermore, due to limitations in current testing methods, actual testing can only perform charging and discharging from either the front-wheel drive or rear-wheel drive interface; the front-wheel drive and rear-wheel drive interfaces do not provide simultaneous dynamic output. Summary of the Invention

[0005] In view of the above problems, the present invention is proposed to provide a battery life testing method and apparatus that can better simulate the output power of the front and rear drives of a four-wheel drive battery pack in actual use scenarios, thereby realizing the reliability test and verification of the front and rear drive electrical assemblies during long-term use of the four-wheel drive battery pack, which is more in line with the real situation of battery use.

[0006] According to a first aspect of the present invention, a battery life testing method is provided, comprising: Determine the first proportion of the front-wheel drive output power to the total output power of the target vehicle and the second proportion of the rear-wheel drive output power to the total output power, wherein the sum of the first proportion and the second proportion is equal to 1; Cycle life tests are conducted on the target vehicle's battery based on a first ratio of the front-wheel drive output power and a second ratio of the rear-wheel drive output power.

[0007] Optionally, determining a first proportion of the front-wheel drive output power and a second proportion of the rear-wheel drive output power of the target vehicle includes: Collect driving data for different vehicle models; Based on the collected driving data, a power output parameter table is established; Based on the power output parameter table and the vehicle model of the target vehicle, determine the first proportion of the front-wheel drive output power and the second proportion of the rear-wheel drive output power of the target vehicle.

[0008] Optionally, based on the collected driving data, a power output parameter table can be created, including: For each vehicle of the same model, based on the collected driving data of the vehicle, calculate the front-wheel drive output power as a percentage of the total output power and the rear-wheel drive output power as a percentage of the total output power during the data collection period. The first front-end ratio is calculated based on the collected front-end ratio; the second rear-end ratio is calculated based on the collected rear-end ratio. A power output parameter table is established based on the first front-wheel drive ratio and the second rear-wheel drive ratio.

[0009] Optionally, based on the collected driving data of the vehicle, calculate the front-wheel drive output power as a percentage of the total output power and the rear-wheel drive output power as a percentage of the total output power during the data collection period, including: Based on the collected driving data of the vehicle, the collection time is divided into four-wheel drive time and non-four-wheel drive time; among them, the driving data collected during the four-wheel drive time is used to determine the front-wheel drive ratio and rear-wheel drive ratio of the vehicle.

[0010] Optional, also includes: The non-four-wheel drive time of the vehicle is divided into front-wheel drive time and rear-wheel drive time. Based on the calculated precursor times, the average precursor time is determined; the proportion of the first precursor within each precursor time is 100%. Based on the calculated rear drive times, the average rear drive time is determined; the proportion of the second rear drive within the rear drive time is 100%.

[0011] Optionally, the power output parameter table can be updated based on the front-drive ratio during the average front-drive time and the rear-drive ratio during the average rear-drive time.

[0012] According to a second aspect of the present invention, a battery life testing apparatus is provided, comprising: The power determination module is used to determine the first ratio of the front-wheel drive output power to the total output power of the target vehicle and the second ratio of the rear-wheel drive output power to the total output power, wherein the sum of the first ratio and the second ratio is equal to 1. The test module is used to perform cycle life tests on the battery of the target vehicle based on a first ratio of the front-wheel drive output power and a second ratio of the rear-wheel drive output power.

[0013] Optionally, the power determination module is also used for: Collect driving data for different vehicle models; establish a power output parameter table based on the collected driving data; determine the first proportion of the front-wheel drive output power and the second proportion of the rear-wheel drive output power of the target vehicle based on the power output parameter table and the vehicle model of the target vehicle.

[0014] According to a third aspect of the present invention, an electronic device is provided, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the aforementioned battery life testing method.

[0015] According to a fourth aspect of the present invention, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the aforementioned battery life testing method.

[0016] The above-described one or more technical solutions in the embodiments of this specification have at least the following technical effects: This specification provides a battery life testing method and apparatus. It determines a first ratio of the front-wheel drive output power to the total output power of a target vehicle and a second ratio of the rear-wheel drive output power to the total output power, wherein the sum of the first and second ratios equals 1. Then, based on the first and second ratios of the front-wheel drive output power, a cycle life test is performed on the target vehicle's battery. This better simulates the output power of the front and rear drives of a four-wheel drive battery pack in actual use scenarios, thereby enabling the testing and verification of the reliability of the front and rear drive electrical assemblies during long-term use of the four-wheel drive battery pack, more closely reflecting real-world battery usage conditions.

[0017] 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

[0018] 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 figures denote the same parts throughout the drawings. In the drawings: Figure 1 A schematic diagram of an electronic device according to an embodiment of the present invention is shown.

[0019] Figure 2 A flowchart of a battery life testing method according to an embodiment of the present invention is shown.

[0020] Figure 3 A block diagram of a battery life testing device according to an embodiment of the present invention is shown.

[0021] icon: 100 - Electronic equipment; 10 - Battery life testing device; 20 - Memory; 30 - Processor; 40 - Communication unit. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] Please see Figure 1 , Figure 1 This is a structural block diagram of an electronic device 100 provided in this embodiment. Figure 1 As shown, the electronic device may include a battery life testing device 10, a memory 20, a processor 30, and a communication unit 40. The memory 20 stores machine-readable instructions that can be executed by the processor 30. When the electronic device 100 is running, the processor 30 and the memory 20 communicate with each other via a bus. The processor 30 executes the machine-readable instructions and performs the battery life testing method.

[0027] The memory 20, processor 30, and communication unit 40 are electrically connected directly or indirectly to each other to achieve signal transmission or interaction. For example, these components can be electrically connected to each other through one or more communication buses or signal lines. The battery life testing device 10 includes at least one software function module that can be stored in the memory 20 in the form of software or firmware. The processor 30 is used to execute the executable module (e.g., the software function module or computer program included in the battery life testing device 10) stored in the memory 20.

[0028] The memory 20 may be, but is not limited to, random access memory (RAM), read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), etc.

[0029] In some embodiments, processor 30 is used to perform one or more functions described in this embodiment. In some embodiments, processor 30 may include one or more processing cores (e.g., a single-core processor (S) or a multi-core processor (S)).

[0030] For ease of explanation, only one processor is described in electronic device 100. However, it should be noted that electronic device 100 in this embodiment may also include multiple processors, and therefore the steps performed by one processor as described in this embodiment may also be performed jointly or individually by multiple processors. For example, if the server's processor performs steps A and B, it should be understood that steps A and B may also be performed jointly by two different processors or individually by one processor. For example, one processor performs step A, and a second processor performs step B, or the first and second processors jointly perform steps A and B.

[0031] In this embodiment, the memory 20 is used to store the program, and the processor 30 is used to execute the program after receiving the execution instruction. The process definition method disclosed in any implementation of this embodiment can be applied to the processor 30, or implemented by the processor 30.

[0032] The communication unit 40 is used to establish a communication connection between the electronic device 100 and other devices via a network, and to send and receive data via the network.

[0033] In some implementations, the network can be any type of wired or wireless network, or a combination thereof.

[0034] In this embodiment, the electronic device 100 may be, but is not limited to, a laptop computer, a super mobile personal computer, a netbook, or a test controller. This embodiment does not impose any restrictions on the specific type of electronic device.

[0035] based on Figure 1 The implementation architecture of this embodiment provides a battery life testing method, which is based on... Figure 1 The electronic device 100 shown performs the following based on Figure 1 The structural diagram of the electronic device 100 shown illustrates in detail the steps of the battery life testing method provided in this embodiment, in conjunction with... Figure 2 As shown, the battery life testing method includes steps 101 to 102: Step 101: Determine the first proportion of the front-wheel drive output power to the total output power and the second proportion of the rear-wheel drive output power to the total output power of the target vehicle, wherein the sum of the first proportion and the second proportion is equal to 1; For new energy vehicles, some are two-wheel drive systems. Passenger cars, particularly sedans and SUVs, are mostly front-wheel drive, while light and heavy trucks are rear-wheel drive. Two-wheel drive systems are simple in structure, low in cost, and more widely used. Vehicles with higher road performance requirements and off-road capabilities generally use four-wheel drive systems. As the name suggests, a four-wheel drive system allows all four wheels to act as drive wheels, providing forward propulsion and significantly improving the vehicle's road adaptability.

[0036] For four-wheel drive new energy vehicles, due to the adjustment of the vehicle's power distribution, the battery pack will output different power to the front and rear motors according to actual needs.

[0037] Based on the above, in this embodiment, the target vehicle battery that needs to undergo cycle life testing is referred to as the battery under test. When conducting battery cycle life testing on the battery under test, the output power of front-wheel drive and rear-wheel drive vehicles may differ to better reflect real-world usage scenarios. Therefore, before conducting battery cycle life testing on the battery under test, it is necessary to determine the output power of both the front-wheel drive and rear-wheel drive vehicles.

[0038] In one optional implementation, since the sum of the front-drive output power and the rear-drive output power equals the total output power of the battery under test, a first proportion of the front-drive output power to the total output power and a second proportion of the rear-drive output power to the total output power can be determined first. Specific determination steps may include: Collect driving data for different vehicle models; Based on the collected driving data, a power output parameter table is established; Based on the power output parameter table and the vehicle model of the target vehicle, determine the first proportion of the front-wheel drive output power and the second proportion of the rear-wheel drive output power of the target vehicle.

[0039] In actual driving, the power distribution between front-wheel drive and rear-wheel drive differs due to factors such as different vehicle models and road conditions. Even under the same road conditions, the power distribution between front-wheel drive and rear-wheel drive will vary for different vehicle models. However, vehicle models are identifiable when collecting driving data. To make the data more representative, driving data can be segmented according to vehicle model. Driving data for the same vehicle model can then be collected together for analysis.

[0040] Based on the collected driving data, a power output parameter table, also known as a power map, can be created. This table includes a first ratio for front-wheel drive and a second ratio for rear-wheel drive for different vehicle models. Depending on the target vehicle's model, the corresponding front-wheel drive first ratio and rear-wheel drive second ratio can be found in the power output parameter table.

[0041] In one implementation, the power output parameter table can be established by referring to the following steps: For each vehicle of the same model, based on the collected driving data of the vehicle, calculate the front-wheel drive output power as a percentage of the total output power and the rear-wheel drive output power as a percentage of the total output power during the data collection period. The first front-end ratio is calculated based on the collected front-end ratio; the second rear-end ratio is calculated based on the collected rear-end ratio. A power output parameter table is established based on the first front-wheel drive ratio and the second rear-wheel drive ratio.

[0042] Taking the same vehicle model as an example, we collect a large amount of driving data for this type of vehicle. For example, during the data collection period, we collect the dynamic output power allocated to the front-wheel drive and the dynamic output power allocated to the rear-wheel drive. Based on the output power allocated during the data collection period, we can calculate the front-wheel drive ratio and the rear-wheel drive ratio by integration. It should be noted that the front-wheel drive ratio or rear-wheel drive ratio is simply the average of the output power of the front-wheel drive or rear-wheel drive as a percentage of the total power during the data collection period. After obtaining a large amount of vehicle driving data, we can obtain multiple front-wheel drive ratios and rear-wheel drive ratios. We take the average of these front-wheel drive ratios to calculate the first front-wheel drive ratio, and similarly, we take the average of these rear-wheel drive ratios to calculate the second rear-wheel drive ratio. Then, based on the first front-wheel drive ratio and the second rear-wheel drive ratio, we establish a power output parameter table. It is easy to understand that for other vehicle models, following the above data collection method, we will also obtain the corresponding first front-wheel drive ratio and second rear-wheel drive ratio for those other vehicle models. The target vehicle can be matched with the corresponding first front-wheel drive ratio and second rear-wheel drive ratio in the power output parameter table by its vehicle model. When conducting battery cycle life tests on the target vehicle's battery, the first ratio for front-wheel drive can be referenced to the first front-wheel drive ratio, and the second ratio can be referenced to the second rear-wheel drive ratio.

[0043] However, it should be noted that for new energy four-wheel drive vehicles, four-wheel drive is also divided into full-time four-wheel drive and non-full-time four-wheel drive. Non-full-time four-wheel drive includes part-time four-wheel drive and real-time four-wheel drive.

[0044] Full-time four-wheel drive refers to a mode in which the vehicle maintains four-wheel drive throughout the entire driving process. This mode offers better off-road and handling performance, but it increases power consumption and reduces fuel economy. Part-time four-wheel drive refers to a mode in which the vehicle can switch freely between two-wheel drive and four-wheel drive based on actual road conditions through manual control. Real-time four-wheel drive is controlled by a computer chip to switch between two-wheel drive and four-wheel drive modes according to changes in the driving environment.

[0045] Therefore, when a new energy four-wheel drive vehicle is in operation, it's possible that both front-wheel drive and rear-wheel drive receive power, or sometimes only front-wheel drive or only rear-wheel drive receives power. Based on this, the data collection time can be divided into four-wheel drive and non-four-wheel drive times, and the driving data collected during these two time periods can be analyzed differently. Specifically, for vehicles of the same model, the following steps can be included: Based on the collected driving data of the vehicle, the collection time is divided into four-wheel drive time and non-four-wheel drive time; among them, the driving data collected during the four-wheel drive time is used to determine the front-wheel drive ratio and rear-wheel drive ratio of the vehicle.

[0046] Driving data collected during four-wheel drive time is used to determine the vehicle's front-wheel drive and rear-wheel drive ratios. Then, referring to the previous steps, these front-wheel drive ratios are averaged to calculate the first front-wheel drive ratio. Similarly, these rear-wheel drive ratios are averaged to calculate the second rear-wheel drive ratio. Finally, a power output parameter table is established based on the first front-wheel drive ratio and the second rear-wheel drive ratio.

[0047] For driving data collected during non-four-wheel drive periods, the analysis and processing steps may include: The non-four-wheel drive time of the vehicle is further divided into front-wheel drive time and rear-wheel drive time. Based on the calculated precursor times, the average precursor time is determined; the proportion of the first precursor within each precursor time is 100%. Based on the calculated rear drive times, the average rear drive time is determined; the proportion of the second rear drive within the rear drive time is 100%.

[0048] As is easy to understand, the data collection time consists of four-wheel drive time and non-four-wheel drive time. After determining the four-wheel drive time and non-four-wheel drive time, we can determine the four-wheel drive ratio of the data collection time and the non-four-wheel drive ratio of the data collection time. Based on these ratios, the number of cycles can be divided according to these ratios in the subsequent battery cycle life test. That is to say, part of the cycle count is based on a single front-wheel drive or rear-wheel drive power output, and the other part of the cycle count is based on a power distribution according to a matched first front-wheel drive ratio and a second rear-wheel drive ratio.

[0049] In detail, non-four-wheel drive time can be further divided into front-wheel drive time and rear-wheel drive time. Front-wheel drive time refers to the time during which only the front-wheel drive has power output; similarly, rear-wheel drive time refers to the time during which only the rear-wheel drive has power output. After dividing the front-wheel drive time and rear-wheel drive time, the average time for each non-four-wheel drive time is determined based on the calculated non-four-wheel drive time; the average time for each front-wheel drive time is determined based on the calculated front-wheel drive time; the average time for each rear-wheel drive time is determined based on the calculated rear-wheel drive time; and the power output parameter table is updated based on the first front-wheel drive ratio within the average front-wheel drive time and the second rear-wheel drive ratio within the average rear-wheel drive time. At this point, the power output parameter table contains the following information: the front-wheel drive time ratio and the corresponding first front-wheel drive ratio (i.e., first front-wheel drive ratio 100%, second rear-wheel drive ratio 0); the rear-wheel drive time ratio and the corresponding second rear-wheel drive ratio (i.e., second rear-wheel drive ratio 100%, first front-wheel drive ratio 0); and the four-wheel drive time ratio and the corresponding first front-wheel drive ratio and second rear-wheel drive ratio.

[0050] The preceding time ratio and the following time ratio are determined according to the average preceding time and the average following time as a percentage of the total collection time.

[0051] The front-drive time ratio, rear-drive time ratio, and four-wheel drive time ratio are used to divide the number of cycles. The first front-drive ratio and the second rear-drive ratio corresponding to the time ratio are used to allocate the front-drive output power and rear-drive output power of the battery under test.

[0052] Step 102: Perform a cycle life test on the battery of the target vehicle based on the first ratio of the front-wheel drive output power and the second ratio of the rear-wheel drive output power.

[0053] It should be noted that the first ratio of front-wheel drive output power and the second ratio of rear-wheel drive output power of the target vehicle are determined by matching from the power output parameter table. Based on the target vehicle model, the corresponding vehicle model is matched from the power output parameter table, and then the power data corresponding to that model is obtained, i.e., the first ratio and the second ratio. Referring to the preceding content, it is easy to see that there are two methods for obtaining the power data. One is constant, meaning that regardless of whether the target vehicle's four-wheel drive system is full-time or non-full-time, the first front-wheel drive ratio and the second rear-wheel drive ratio matched with the first ratio and the second ratio of the battery under test are fixed values. The other method divides the time into four-wheel drive and non-four-wheel drive periods. For four-wheel drive time, one first front-wheel drive ratio and the second rear-wheel drive ratio are used; for front-wheel drive time, another first front-wheel drive ratio and the second rear-wheel drive ratio are used; and for rear-wheel drive time, yet another first front-wheel drive ratio and the second rear-wheel drive ratio are used. The specific choice can be determined according to actual needs.

[0054] For example, consider the Voyah Free vehicle equipped with a lithium battery. The battery cycle life test method involves charging in a specific manner (e.g., fast charging 0.5C–2C, slow charging, or a combination of fast and slow charging) and discharging at 2C. Based on the target vehicle model, the first front-wheel drive ratio is determined to be 38%, and the second rear-wheel drive ratio is determined to be 62% from the power output parameter table. Therefore, when the battery under test is discharged, the first proportion of front-wheel drive output power is 38%, and the second proportion of rear-wheel drive output power is 62%. This charge-discharge cycle is performed for 2000 cycles.

[0055] Alternatively, consider the Voyah Free vehicle equipped with a lithium battery. The battery cycle life test method is as follows: charging is performed in a specific manner (fast charging 0.5C–2C, slow charging, or a combination of fast and slow charging), and discharging is performed at 2C. Based on the target vehicle model, the power output parameter table determines the front-wheel drive time ratio as 10%, the rear-wheel drive time ratio as 15%, and the four-wheel drive time ratio as 75%. The corresponding front-wheel drive time ratio for the four-wheel drive time ratio is 40%, and the rear-wheel drive time ratio is 60%. Therefore, during testing, there are 200 cycles where the first ratio is 100% and the second ratio is 0%; there are 300 cycles where the first ratio is 0% and the second ratio is 100%; and there are 1500 cycles where the first ratio is 40% and the second ratio is 60%.

[0056] In summary, the battery life testing method provided in this specification determines a first proportion of the front-wheel drive output power to the total output power of a target vehicle and a second proportion of the rear-wheel drive output power to the total output power, wherein the sum of the first and second proportions equals 1. Then, based on the first and second proportions of the front-wheel drive output power, a cycle life test is performed on the target vehicle's battery. This better simulates the output power of the front and rear drives of a four-wheel drive battery pack in actual use scenarios, thereby enabling the testing and verification of the reliability of the front and rear drive electrical assemblies during long-term use of the four-wheel drive battery pack, more closely reflecting real-world battery usage conditions.

[0057] Based on the same inventive concept, combined with Figure 3 As shown, an embodiment of the present invention provides a battery life testing device, comprising: The power determination module is used to determine the first ratio of the front-wheel drive output power to the total output power of the target vehicle and the second ratio of the rear-wheel drive output power to the total output power, wherein the sum of the first ratio and the second ratio is equal to 1. The test module is used to perform cycle life tests on the battery of the target vehicle based on a first ratio of the front-wheel drive output power and a second ratio of the rear-wheel drive output power.

[0058] Optionally, the power determination module is also used for: Collect driving data for different vehicle models; establish a power output parameter table based on the collected driving data; determine the first proportion of the front-wheel drive output power and the second proportion of the rear-wheel drive output power of the target vehicle based on the power output parameter table and the vehicle model of the target vehicle.

[0059] Optionally, based on the collected driving data, a power output parameter table can be created, including: For each vehicle of the same model, based on the collected driving data of the vehicle, calculate the front-wheel drive output power as a percentage of the total output power and the rear-wheel drive output power as a percentage of the total output power during the data collection period. The first front-end ratio is calculated based on the collected front-end ratio; the second rear-end ratio is calculated based on the collected rear-end ratio. A power output parameter table is established based on the first front-wheel drive ratio and the second rear-wheel drive ratio.

[0060] Optionally, based on the collected driving data of the vehicle, calculate the front-wheel drive output power as a percentage of the total output power and the rear-wheel drive output power as a percentage of the total output power during the data collection period, including: Based on the collected driving data of the vehicle, the collection time is divided into four-wheel drive time and non-four-wheel drive time; among them, the driving data collected during the four-wheel drive time is used to determine the front-wheel drive ratio and rear-wheel drive ratio of the vehicle.

[0061] Optional, also includes: The non-four-wheel drive time of the vehicle is divided into front-wheel drive time and rear-wheel drive time. Based on the calculated precursor times, the average precursor time is determined; the proportion of the first precursor within each precursor time is 100%. Based on the calculated rear drive times, the average rear drive time is determined; the proportion of the second rear drive within the rear drive time is 100%.

[0062] Optionally, the power output parameter table can be updated based on the front-drive ratio during the average front-drive time and the rear-drive ratio during the average rear-drive time.

[0063] In summary, the battery life testing device provided in this specification determines a first ratio of the front-wheel drive output power to the total output power of a target vehicle and a second ratio of the rear-wheel drive output power to the total output power, wherein the sum of the first ratio and the second ratio equals 1. Then, based on the first ratio of the front-wheel drive output power and the second ratio of the rear-wheel drive output power, a cycle life test is performed on the target vehicle's battery. This better simulates the output power of the front-wheel drive and rear-wheel drive components of a four-wheel drive battery pack in actual use scenarios, thereby enabling the testing and verification of the reliability of the front and rear-wheel drive electrical assemblies during long-term use of the four-wheel drive battery pack, more closely reflecting real-world battery usage conditions.

[0064] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working process of the battery life testing device described above can be referred to the corresponding process in the aforementioned method, and will not be elaborated further here.

[0065] Based on the above, this embodiment provides a readable storage medium storing a computer program, which, when executed by a processor, implements the battery life testing method of any of the aforementioned embodiments.

[0066] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working process of the readable storage medium described above can be referred to the corresponding process in the aforementioned method, and will not be elaborated further here.

[0067] The above are merely various embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for testing battery life, characterized in that, include: Based on driving data, determine the first proportion of the front-wheel drive output power to the total output power of the target vehicle and the second proportion of the rear-wheel drive output power to the total output power, wherein the sum of the first proportion and the second proportion is equal to 1. Based on a first ratio of the front-wheel drive output power and a second ratio of the rear-wheel drive output power of the target vehicle, the output power of the front-wheel drive and rear-wheel drive of the target vehicle are set respectively, and the cycle life test of the battery of the target vehicle is performed.

2. The method according to claim 1, characterized in that, The step of determining the first proportion of the front-wheel drive output power to the total output power and the second proportion of the rear-wheel drive output power to the total output power of the target vehicle based on driving data includes: Collect driving data for different vehicle models; Based on the collected driving data, a power output parameter table is established; Based on the power output parameter table and the vehicle model of the target vehicle, determine the first proportion of the front-wheel drive output power and the second proportion of the rear-wheel drive output power of the target vehicle.

3. The method according to claim 2, characterized in that, The step of establishing a power output parameter table based on the collected driving data includes: For each vehicle of the same model, based on the collected driving data of the vehicle, calculate the front-wheel drive output power as a percentage of the total output power and the rear-wheel drive output power as a percentage of the total output power during the data collection period. The first front-end ratio is calculated based on the collected front-end ratio; the second rear-end ratio is calculated based on the collected rear-end ratio. Based on the first front-wheel drive ratio and the second rear-wheel drive ratio, the power output parameter table is established.

4. The method according to claim 3, characterized in that, The step of calculating the proportion of front-wheel drive output power to total output power and the proportion of rear-wheel drive output power to total output power based on the collected vehicle driving data during the data collection period includes: Based on the collected driving data of the vehicle, the collection time is divided to determine the four-wheel drive time and the non-four-wheel drive time; wherein, the driving data collected during the four-wheel drive time is used to determine the front-wheel drive ratio and rear-wheel drive ratio of the vehicle.

5. The method according to claim 4, characterized in that, Also includes: The non-four-wheel drive time of the vehicle is divided into front-wheel drive time and rear-wheel drive time. Based on the calculated preceding times, the average preceding time is determined. The proportion of the first precursor during the precursor time is 100%; Based on the calculated rear drive times, the average rear drive time is determined; the proportion of the second rear drive within the rear drive time is 100%.

6. The method according to claim 5, characterized in that, The power output parameter table is updated based on the front-drive ratio during the average front-drive time and the rear-drive ratio during the average rear-drive time.

7. A battery life testing device, characterized in that, include: The power determination module is used to determine, based on driving data, a first ratio of the front-wheel drive output power to the total output power of the target vehicle and a second ratio of the rear-wheel drive output power to the total output power, wherein the sum of the first ratio and the second ratio is equal to 1. The testing module is used to set the output power of the front-wheel drive and rear-wheel drive of the target vehicle according to a first ratio of the front-wheel drive output power and a second ratio of the rear-wheel drive output power, and to perform cycle life testing on the battery of the target vehicle.

8. The apparatus according to claim 7, characterized in that, The power determination module is also used for: Collect driving data for different vehicle models; establish a power output parameter table based on the collected driving data; determine the first proportion of the front-wheel drive output power and the second proportion of the rear-wheel drive output power of the target vehicle based on the power output parameter table and the vehicle model of the target vehicle.

9. An electronic device, characterized in that, The electronic device includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the battery life testing method according to any one of claims 1-6.

10. A computer-readable storage medium, characterized in that, It stores a computer program that, when executed by a processor, implements the battery life testing method as described in any one of claims 1-6.

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