Power battery test method and device, electronic equipment and storage medium

Abstract

The invention provides a test method and device for a power battery, electronic equipment and a storage medium, and the test method comprises the steps: obtaining the current power of other related electric appliances except a target power part on a vehicle in real time after a test triggering condition is satisfied; according to the principle that the working power of the power battery is not changed, the current required power of the target power component is determined based on the current electricity utilization power of all the related electric appliances and the specified test power of the power battery; and controlling the target power part to work according to the current required power, and obtaining performance evaluation parameters of the power battery in real time. Therefore, by dynamically adjusting the power of the target power part, the test power of the power battery in the test process is fixed, so that accurate quantitative data of the power battery can be obtained, and the performance of the power battery can be accurately determined.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to a testing method, device, electronic equipment and storage medium for a power battery. Background Art

[0002] The popularity of new energy vehicles is due to the rapid development of power battery technology. As the core component of electric vehicles, the performance of power batteries directly affects the vehicle's endurance, charging efficiency and overall driving experience. However, the performance of power batteries is not constant. Temperature, environmental conditions, charge and discharge cycles, and battery state of charge (SOC) will significantly affect the battery's output power and efficiency. Therefore, in order to ensure the stability and efficiency of new energy vehicles in actual use, it is necessary to conduct comprehensive performance tests on power batteries.

[0003] Existing power battery testing methods mainly include real vehicle testing and laboratory simulation testing. Although real vehicle testing can reflect the comprehensive performance of the battery in a real driving environment, due to its complexity and variability, the operating conditions are difficult to strictly control. During the operation of the vehicle, the output power of the battery is not only affected by the driver's operation (such as vehicle speed and throttle), but also by the power demand of additional equipment such as air conditioning and lights in the car. These factors make the test results usually the battery performance under comprehensive working conditions, and cannot provide accurate quantitative data under specific temperature and SOC conditions. The lack of this data brings certain difficulties to the optimization and performance improvement of the battery. Summary of the invention

[0004] In view of this, the purpose of the present application is to provide a testing method, device, electronic device and storage medium for a power battery, which can achieve fixed test power of the power battery during the test by dynamically adjusting the power of the target power component, thereby obtaining accurate quantitative data of the power battery, and further accurately determining the performance of the power battery.

[0005] The present application provides a method for testing a power battery, the method comprising:

[0006] After the test triggering conditions are met, the current power consumption of all other related electrical appliances on the vehicle except the target power component is obtained in real time;

[0007] Following the principle that the working power of the power battery remains unchanged, the current required power of the target power component is determined based on the current power consumption of all relevant electrical appliances and the specified test power of the power battery;

[0008] The target power component is controlled to operate according to the current required power, and the performance evaluation parameters of the power battery are obtained in real time.

[0009] Optionally, the target power component is determined according to the test type;

[0010] When the test type is a discharge test, the target power component is a drive motor;

[0011] When the test type is a charging test, the target power component is a range extender.

[0012] Optionally, when the test type is a discharge test, the target power component is a drive motor, and the current required power of the target power component is determined based on the current power consumption of all relevant electrical appliances and the specified test power of the power battery in accordance with the principle that the working power of the power battery remains unchanged, including:

[0013] Analyze the current power consumption of all relevant electrical appliances to determine the total input power and total output power relative to the power battery;

[0014] The specified test power is added to the input total power and the result of subtracting the output total power is determined as the current required power of the drive motor.

[0015] Optionally, when the test type is a charging test, the target power component is a range extender, and the current required power of the target power component is determined based on the current power consumption of all relevant electrical appliances and the specified test power of the power battery in accordance with the principle that the working power of the power battery remains unchanged, including:

[0016] Analyze the current power consumption of all relevant electrical appliances to determine the total input power and total output power relative to the power battery;

[0017] The result of adding the designated test power to the total output power and subtracting the total input power is determined as the current required power of the range extender.

[0018] Optionally, when the test type is a discharge test, determine whether the test trigger condition is met by the following steps:

[0019] Determining an opening threshold of an accelerator pedal according to the specified test power;

[0020] Identify whether the actual opening degree of the tester's accelerator pedal exceeds the opening degree threshold;

[0021] If exceeded, it is determined that the test trigger condition is met; otherwise, it is determined that the test trigger condition is not met.

[0022] Optionally, after obtaining the performance evaluation parameters of the power battery, the testing method further includes:

[0023] The performance evaluation parameters of the power battery are obtained and analyzed to generate test results of the power battery.

[0024] The present application also provides a power battery testing device, the testing device comprising:

[0025] The first acquisition module is used to obtain the current power consumption of the relevant electrical appliances other than the target power component on the vehicle in real time after the test trigger condition is met.

[0026] A first determination module is used to determine the current required power of the target power component based on the current power consumption of all relevant electrical appliances and the specified test power of the power battery in accordance with the principle that the working power of the power battery remains unchanged;

[0027] The second acquisition module is used to control the target power component to operate according to the current required power and to acquire the performance evaluation parameters of the power battery in real time.

[0028] Optionally, the target power component is determined according to the test type;

[0029] When the test type is a discharge test, the target power component is a drive motor;

[0030] When the test type is a charging test, the target power component is a range extender.

[0031] Optionally, when the test type is a discharge test, the target power component is a drive motor, and the first determination module is used to follow the principle that the working power of the power battery remains unchanged, based on the current power consumption of all relevant electrical appliances and the specified test power of the power battery, to determine the current required power of the target power component, the first determination module is used to:

[0032] Analyze the current power consumption of all relevant electrical appliances to determine the total input power and total output power relative to the power battery;

[0033] The specified test power is added to the input total power and the result of subtracting the output total power is determined as the current required power of the drive motor.

[0034] Optionally, when the test type is a charging test, the target power component is a range extender, and the first determination module is used to follow the principle that the working power of the power battery remains unchanged, based on the current power consumption of all relevant electrical appliances and the specified test power of the power battery, to determine the current required power of the target power component, the first determination module is used to:

[0035] Analyze the current power consumption of all relevant electrical appliances to determine the total input power and total output power relative to the power battery;

[0036] The result of adding the designated test power to the total output power and subtracting the total input power is determined as the current required power of the range extender.

[0037] Optionally, the testing device further includes a second determining module, wherein the second determining module is configured to:

[0038] When the test type is a discharge test, determining the opening threshold of the accelerator pedal according to the specified test power;

[0039] Identify whether the actual opening degree of the tester's accelerator pedal exceeds the opening degree threshold;

[0040] If exceeded, it is determined that the test trigger condition is met; otherwise, it is determined that the test trigger condition is not met.

[0041] Optionally, the testing device further includes a generating module, wherein the generating module is used to:

[0042] After obtaining the performance evaluation parameters of the power battery, analyzing the obtained performance evaluation parameters of the power battery to generate a test result of the power battery;

[0043] An embodiment of the present application also provides an electronic device, comprising: a processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor, and when the electronic device is running, the processor and the memory communicate via the bus, and when the machine-readable instructions are executed by the processor, the steps of the above-mentioned test method are performed.

[0044] An embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the above-mentioned test method are executed.

[0045] A power battery testing method, device, electronic device and storage medium provided in an embodiment of the present application, the testing method comprising: after a test trigger condition is met, obtaining in real time the current power consumption of each of the other relevant electrical appliances on the vehicle except for a target power component; following the principle that the working power of the power battery remains unchanged, determining the current required power of the target power component based on the current power consumption of all relevant electrical appliances and the specified test power of the power battery; controlling the operation of the target power component according to the current required power, and obtaining in real time the performance evaluation parameters of the power battery.

[0046] This application achieves fixed power discharge of the power battery by dynamically adjusting the required power of the drive motor during the discharge test; and dynamically adjusting the power of the booster during the charging test to achieve fixed power charging of the power battery. In this way, ensuring that the power of the power battery is fixed helps control variables, making the test results more accurate and reliable, and more accurately reflecting the performance of the battery in actual use. In contrast, if the discharge power is not fixed, the test results may be affected by power fluctuations, resulting in inaccurate evaluation results.

[0047] In addition, the fixed power test method is also helpful to study the charge and discharge efficiency of the battery at different discharge rates and discharge depths.

[0048] In summary, ensuring that the charge and discharge power is fixed has obvious advantages when conducting power battery testing. It can provide more accurate performance evaluation, help optimize battery design and usage strategies, and improve battery efficiency and reliability.

[0049] In order to make the above-mentioned objects, features and advantages of the present application 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

[0050] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0051] Figure 1 A flow chart of a power battery testing method provided in an embodiment of the present application;

[0052] Figure 2 A schematic diagram of power distribution during a discharge test provided in this application;

[0053] Figure 3 A schematic diagram of power distribution during a charging test provided in this application;

[0054] Figure 4 This is one of the structural schematic diagrams of a power battery testing device provided in an embodiment of the present application;

[0055] Figure 5 The second structural schematic diagram of a power battery testing device provided in an embodiment of the present application;

[0056] Figure 6 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0057] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application usually described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, each other embodiment obtained by those skilled in the art without making creative work belongs to the scope of protection of the present application.

[0058] The popularity of new energy vehicles is due to the rapid development of power battery technology. As the core component of electric vehicles, the performance of power batteries directly affects the vehicle's endurance, charging efficiency and overall driving experience. However, the performance of power batteries is not constant. Temperature, environmental conditions, charge and discharge cycles, and battery state of charge (SOC) will significantly affect the battery's output power and efficiency. Therefore, in order to ensure the stability and efficiency of new energy vehicles in actual use, it is necessary to conduct comprehensive performance tests on power batteries.

[0059] Existing power battery testing methods mainly include real vehicle testing and laboratory simulation testing. Although real vehicle testing can reflect the comprehensive performance of the battery in a real driving environment, due to its complexity and variability, the operating conditions are difficult to strictly control. During the operation of the vehicle, the output power of the battery is not only affected by the driver's operation (such as vehicle speed and throttle), but also by the power demand of additional equipment such as air conditioning and lights in the car. These factors make the test results usually the battery performance under comprehensive working conditions, and cannot provide accurate quantitative data under specific temperature and SOC conditions. The lack of this data brings certain difficulties to the optimization and performance improvement of the battery.

[0060] Based on this, the embodiments of the present application provide a power battery testing method, device, electronic device and storage medium, which achieve fixed test power of the power battery during the test by dynamically adjusting the power of the target power component, thereby obtaining accurate quantitative data of the power battery, and further accurately determining the performance of the power battery.

[0061] See also Figure 1 , Figure 1 A flow chart of a power battery testing method provided in an embodiment of the present application.

[0062] The power battery is a power source that provides power for tools, such as a storage battery that provides power for electric cars, electric trains, electric bicycles, and golf carts.

[0063] Here, the power battery is a battery installed on a real vehicle, so the power battery test method provided in this application is a power battery test method in a real vehicle scenario. The test type may specifically include a discharge test and a charge test.

[0064] like Figure 1 As shown in, the test method provided in the embodiment of the present application includes:

[0065] S101. After a test trigger condition is met, the current power consumption of all other relevant electrical appliances on the vehicle except the target power component is obtained in real time.

[0066] S102: Following the principle that the working power of the power battery remains unchanged, based on the current power consumption of all relevant electrical appliances and the specified test power of the power battery, determine the current required power of the target power component.

[0067] S103: Control the target power component to operate according to the current required power, and obtain performance evaluation parameters of the power battery in real time.

[0068] With respect to step S101, in this step, the test trigger conditions are identified in real time. When it is determined that the test trigger conditions are met, the corresponding target power components are determined according to the current test type, and the current power consumption of the remaining related electrical appliances on the vehicle except the target power components is obtained in real time.

[0069] Here, the target power component is determined according to the test type; when the test type is a discharge test, the target power component is a drive motor; when the test type is a charging test, the target power component is a range extender.

[0070] In an implementation manner provided in the present application, when the test type is a discharge test, the following steps are performed to determine whether the test triggering condition is met:

[0071] S201. Determine an opening threshold of an accelerator pedal according to the specified test power.

[0072] S202, identifying whether the actual opening of the accelerator pedal controlled by the tester exceeds the opening threshold; if so, determining that the test trigger condition is satisfied; otherwise, determining that the test trigger condition is not satisfied.

[0073] Thus, when different designated test powers are set during the discharge test, the corresponding accelerator pedal opening thresholds are generally different. The value of the designated test power can be adaptively set according to actual conditions.

[0074] Among them, the relationship between the test power and the opening threshold of the accelerator pedal can be a linear correspondence relationship, a nonlinear correspondence relationship, a threshold relationship, a piecewise linear relationship, an exponential or logarithmic relationship, a discrete control relationship, etc.

[0075] In this way, by setting a throttle pedal opening threshold, when the road conditions are suitable, as long as the driver steps on the accelerator deeply, the power battery will discharge at a fixed power. When the road conditions are not suitable, the driver can slow down by releasing the accelerator. Therefore, there is no safety risk and the control difficulty can be reduced.

[0076] In another embodiment provided in the present application, when the test type is a discharge test, the corresponding charging test triggering conditions, for example, may include the following conditions: charging device state conditions, voltage threshold conditions, etc.

[0077] For example, during the test, when it is identified that the range extender is charging, it is determined that the charging test trigger condition is met, and then the charging test mode is entered.

[0078] Continuing with step S101, for example, the other related electrical appliances except the target power component may include: when the charging test is performed, the related electrical appliances include: air conditioning compressor, heating resistor, DCDC and drive motor, etc. When the discharge test is performed, the related electrical appliances include: air conditioning compressor, heating resistor, DCDC, and may also include range extender, etc.

[0079] It should be noted that when the present application performs a discharge test, the actual vehicle on which the power battery is installed may or may not include a range extender. However, for the sake of uniform description, the test method of this solution will be described later using a vehicle with an extender installed.

[0080] The real-time acquisition of the current power consumption of the relevant electrical appliances other than the target power component on the vehicle may include, for example:

[0081] During the discharge test, the power P of the air conditioner compressor is obtained in real time. 11 , heating resistor power P 12 , DCDC power P 13 , and the range extender's power generation power P 14 .

[0082] During the charging test, the power P of the air conditioning compressor is obtained in real time. 21 , heating resistor power P 22 , DCDC power P 23 , and the power P of the drive motor 24 It should be noted that during the charging test, the vehicle was in the parking state, so the power of the drive motor P 24 Usually 0.

[0083] When determining the power of the air-conditioning compressor, the power can be determined by measuring the voltage and current of the compressor and calculating the electric energy consumed in real time.

[0084] When determining the power of the heating resistor, its power consumption can be calculated by monitoring the current and voltage.

[0085] When determining the DCDC power, it can be calculated by monitoring the input and output voltage and current.

[0086] When determining the power of a drive motor, its power output can be calculated from the motor's operating voltage and current.

[0087] When determining the power generation power of the range extender, the power output of the range extender can be calculated in real time by monitoring the power generation status of the range extender.

[0088] For examples, see Figure 2 , Figure 3 , Figure 2 A schematic diagram of power distribution during a discharge test provided in this application. Figure 3 This is a schematic diagram of power distribution during a charging test provided by this application. Figure 2 as well as Figure 3 As shown, P bat is the specified test power of the power battery during the test, P X is the current power requirement of the power component, which is generally a dynamically changing power. And P X It changes with the changes of air-conditioning compressor, heating resistor, DCDC and drive motor (or range extender), thus ensuring P bat Fixed and unchanged.

[0089] With respect to step S102, in this step, the current required power of the target power component is adjusted according to the current power consumption of all relevant electrical appliances, so as to ensure that the actual power of the power battery is the specified test power.

[0090] In an embodiment provided in the present application, when the test type is a discharge test, the target power component is a drive motor, and the current required power of the target power component is determined based on the current power consumption of all relevant electrical appliances and the specified test power of the power battery in accordance with the principle that the working power of the power battery remains unchanged, including:

[0091] S10211. Analyze the current power consumption of all relevant electrical appliances to determine the total input power and total output power relative to the power battery.

[0092] S10212. Add the designated test power to the total input power and subtract the total output power to determine the result as the current required power of the drive motor.

[0093] The current required power of the driving motor is a driving power limit value of the driving motor.

[0094] The implementation process of steps S10211-S10212 is illustrated by the following content: Assuming that during the discharge test, the relevant electrical appliances include: an air-conditioning compressor, a heating resistor, a DCDC, and a range extender, and the power values ​​obtained include the power P of the air-conditioning compressor. 11 , heating resistor power P 12 , DCDC power P 13 , and the range extender's power generation power P 14 The predetermined test power of the power battery is P bat .

[0095] The current required power P of the drive motor X =P bat -P 11 -P 12 -P 13 +P 14 .

[0096] In another embodiment provided in the present application, when the test type is a charging test, the target power component is a range extender, and the current required power of the target power component is determined based on the current power consumption of all relevant electrical appliances and the specified test power of the power battery in accordance with the principle that the working power of the power battery remains unchanged, including:

[0097] S10221. Analyze the current power consumption of all relevant electrical appliances to determine the total input power and total output power relative to the power battery.

[0098] S10222. Add the designated test power to the total output power and subtract the total input power to determine the result as the current required power of the range extender.

[0099] Here, the current required power of the range extender is the power generated by the range extender.

[0100] The implementation process of steps S10221-S10222 is illustrated by the following content: Assuming that during the charging test, the relevant electrical appliances include: an air-conditioning compressor, a heating resistor, a DCDC, and a drive motor, and the power value obtained includes the power P of the air-conditioning compressor. 21 , heating resistor power P 22 , DCDC power P 23 , and the power P of the drive motor 24 (The power of the driving motor P 24 The predetermined test power of the power battery is Pbat .

[0101] Current required power P of the range extender X =P bat +P 21 +P 22 +P 23 +P 24 .

[0102] With respect to step S103, the power of the target power component is adjusted in real time according to the current power demand determined in real time, and the target power component is controlled to operate according to the current power demand, and the performance evaluation parameters of the power battery are obtained in real time during the test.

[0103] The performance evaluation parameters mentioned here may include battery performance parameters and environmental and operating condition parameters, etc.

[0104] The battery performance parameters may include: voltage, current, power, state of charge, internal resistance, temperature, etc.

[0105] The environment and operating parameters may include: ambient temperature, workload, charging / discharging rate, etc.

[0106] In another embodiment provided in the present application, after obtaining the performance evaluation parameters of the power battery, the testing method further includes: analyzing the obtained performance evaluation parameters of the power battery to generate a test result of the power battery.

[0107] Here, in each test, the performance evaluation parameters of the power battery obtained in the test phase are analyzed as a whole to generate the test results of the power battery in this test. Alternatively, the performance evaluation parameters of the power battery obtained in several tests can be analyzed as a whole to generate the comprehensive test results of the power battery in multiple tests.

[0108] Among them, before generating the test results of the power battery, evaluation can be carried out from the following dimensions: stability of voltage and current, power output compliance, consistency between SOC changes and endurance (SOC should accurately reflect the remaining power of the battery and be consistent with the vehicle's endurance. If there is a large gap between the change in SOC and the actual endurance, it means that there may be a problem with the battery management system (BMS) or a problem with the battery performance), SOH health level (when SOH drops below 70%, it usually means that the battery is severely aged and the performance is unqualified), internal resistance change (the internal resistance of the battery should not increase significantly), temperature control (the battery should be kept within the design temperature range during operation), safety and stability, durability and life, etc.

[0109] This application achieves fixed power discharge of the power battery by dynamically adjusting the required power of the drive motor during the discharge test; and dynamically adjusting the power of the booster during the charging test to achieve fixed power charging of the power battery. In this way, ensuring that the power of the power battery is fixed helps control variables, making the test results more accurate and reliable, and more accurately reflecting the performance of the battery in actual use. In contrast, if the discharge power is not fixed, the test results may be affected by power fluctuations, resulting in inaccurate evaluation results.

[0110] In addition, the fixed power test method is also helpful to study the charge and discharge efficiency of the battery at different discharge rates and discharge depths.

[0111] In summary, ensuring that the charge and discharge power is fixed has obvious advantages when conducting power battery testing. It can provide more accurate performance evaluation, help optimize battery design and usage strategies, and improve battery efficiency and reliability.

[0112] Based on the same inventive concept, a testing device corresponding to the testing method is also provided in the embodiment of the present application. Since the principle of solving the problem by the device in the embodiment of the present application is similar to the above-mentioned testing method in the embodiment of the present application, the implementation of the device can refer to the implementation of the method, and the repeated parts will not be repeated.

[0113] See also Figure 4 , Figure 5 , Figure 4 This is one of the structural schematic diagrams of a power battery testing device provided in an embodiment of the present application. Figure 5 This is a second structural schematic diagram of a power battery testing device provided in an embodiment of the present application. Figure 4 As shown in , the testing device 400 comprises:

[0114] The first acquisition module 410 is used to obtain the current power consumption of the relevant electrical appliances other than the target power component on the vehicle in real time after the test triggering condition is met;

[0115] A first determination module 420 is used to determine the current required power of the target power component based on the current power consumption of all relevant electrical appliances and the specified test power of the power battery in accordance with the principle that the working power of the power battery remains unchanged;

[0116] The second acquisition module 430 is used to control the target power component to operate according to the current required power and to acquire the performance evaluation parameters of the power battery in real time.

[0117] Optionally, the target power component is determined according to the test type;

[0118] When the test type is a discharge test, the target power component is a drive motor;

[0119] When the test type is a charging test, the target power component is a range extender.

[0120] Optionally, when the test type is a discharge test, the target power component is a drive motor, and the first determination module 420 is used to follow the principle that the working power of the power battery remains unchanged, based on the current power consumption of all relevant electrical appliances and the specified test power of the power battery, to determine the current required power of the target power component. The first determination module 420 is used to:

[0121] Analyze the current power consumption of all relevant electrical appliances to determine the total input power and total output power relative to the power battery;

[0122] The specified test power is added to the input total power and the result of subtracting the output total power is determined as the current required power of the drive motor.

[0123] Optionally, when the test type is a charging test, the target power component is a range extender, and the first determination module 420 is used to follow the principle that the working power of the power battery remains unchanged, based on the current power consumption of all relevant electrical appliances and the specified test power of the power battery, to determine the current required power of the target power component. The first determination module 420 is used to:

[0124] Analyze the current power consumption of all relevant electrical appliances to determine the total input power and total output power relative to the power battery;

[0125] The result of adding the designated test power to the total output power and subtracting the total input power is determined as the current required power of the range extender.

[0126] Optional, such as Figure 5 As shown, the testing device 400 further includes a second determining module 440, and the second determining module 440 is used to:

[0127] When the test type is a discharge test, determining the opening threshold of the accelerator pedal according to the specified test power;

[0128] Identify whether the actual opening degree of the tester's accelerator pedal exceeds the opening degree threshold;

[0129] If exceeded, it is determined that the test trigger condition is met; otherwise, it is determined that the test trigger condition is not met.

[0130] Optionally, the test device 400 further includes a generating module 450, and the generating module 450 is used to:

[0131] After the performance evaluation parameters of the power battery are obtained, the performance evaluation parameters of the power battery are analyzed to generate a test result of the power battery.

[0132] See also Figure 6 , Figure 6 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. Figure 6 As shown in , the electronic device 600 includes a processor 610 , a memory 620 and a bus 630 .

[0133] The memory 620 stores machine-readable instructions executable by the processor 610. When the electronic device 600 is running, the processor 610 communicates with the memory 620 via the bus 630. When the machine-readable instructions are executed by the processor 610, the above-mentioned Figure 1 The specific implementation of the steps in the method embodiment shown can be found in the method embodiment, and will not be repeated here.

[0134] The present application also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the computer program can execute the above-mentioned Figure 1 The specific implementation of the steps in the method embodiment shown can be found in the method embodiment, and will not be repeated here.

[0135] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0136] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0137] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0138] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0139] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a non-volatile computer-readable storage medium that is executable by a processor. Based on this understanding, the technical solution of the present application can essentially be embodied in the form of a software product, or in other words, the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0140] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application is described in detail with reference to the above-mentioned embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-mentioned embodiments within the technical scope disclosed in the present application, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A method for testing a power battery, characterized in that: The test method includes: After the test triggering conditions are met, the current power consumption of all other related electrical appliances on the vehicle except the target power component is obtained in real time; Following the principle that the working power of the power battery remains unchanged, the current required power of the target power component is determined based on the current power consumption of all relevant electrical appliances and the specified test power of the power battery; The target power component is controlled to operate according to the current required power, and the performance evaluation parameters of the power battery are obtained in real time.

2. The testing method according to claim 1, characterized in that: The target power component is determined according to the test type; When the test type is a discharge test, the target power component is a drive motor; When the test type is a charging test, the target power component is a range extender.

3. The testing method according to claim 2, characterized in that: When the test type is a discharge test, the target power component is a drive motor, and the current required power of the target power component is determined based on the current power consumption of all relevant electrical appliances and the specified test power of the power battery in accordance with the principle that the working power of the power battery remains unchanged, including: Analyze the current power consumption of all relevant electrical appliances to determine the total input power and total output power relative to the power battery; The specified test power is added to the input total power and the result of subtracting the output total power is determined as the current required power of the drive motor.

4. The testing method according to claim 2, characterized in that: When the test type is a charging test, the target power component is a range extender, and the current required power of the target power component is determined based on the current power consumption of all relevant electrical appliances and the specified test power of the power battery in accordance with the principle that the working power of the power battery remains unchanged, including: Analyze the current power consumption of all relevant electrical appliances to determine the total input power and total output power relative to the power battery; The result of adding the designated test power to the total output power and subtracting the total input power is determined as the current required power of the range extender.

5. The testing method according to claim 2, characterized in that: When the test type is a discharge test, determine whether the test trigger conditions are met by following the steps below: Determining an opening threshold of an accelerator pedal according to the specified test power; Identify whether the actual opening degree of the tester's accelerator pedal exceeds the opening degree threshold; If exceeded, it is determined that the test trigger condition is met; Otherwise, it is determined that the test trigger condition is not satisfied.

6. The testing method according to claim 1, characterized in that: After obtaining the performance evaluation parameters of the power battery, the testing method further includes: The performance evaluation parameters of the power battery are obtained and analyzed to generate test results of the power battery.

7. A power battery testing device, characterized in that: The testing device comprises: The first acquisition module is used to obtain the current power consumption of the relevant electrical appliances other than the target power component on the vehicle in real time after the test trigger condition is met; A first determination module is used to determine the current required power of the target power component based on the current power consumption of all relevant electrical appliances and the specified test power of the power battery in accordance with the principle that the working power of the power battery remains unchanged; The second acquisition module is used to control the target power component to operate according to the current required power and to acquire the performance evaluation parameters of the power battery in real time.

8. The testing device according to claim 7, characterized in that: The testing device further comprises a generating module, wherein the generating module is used for: After the performance evaluation parameters of the power battery are obtained, the performance evaluation parameters of the power battery are analyzed to generate a test result of the power battery.

9. An electronic device, characterized in that: include: A processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor, and when the electronic device is running, the processor and the memory communicate through the bus, and the machine-readable instructions are executed by the processor to execute the steps of the test method as described in any one of claims 1 to 6.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the testing method according to any one of claims 1 to 6 are executed.

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