Vehicle power battery power test method and system based on power MAP table

Abstract

The invention discloses a vehicle power battery power test method and system based on a power MAP table, and relates to the technical field of power battery power test.The method comprises the steps that according to the imported power MAP table, multiple temperature and SOC state test point positions in the table are identified, and property parameters of power test are determined; performing power test on the power battery of the to-be-tested vehicle in combination with the selected set constant volume mode; wherein the plurality of temperature test points are tested in a sequence from high temperature to low temperature, and the plurality of SOC state test points are tested in different sequences according to different charging and discharging operation modes; and obtaining key data of each MAP test point location, a capacity value at each temperature, and an adjustment capacity value and an operation capacity value in each test step based on data obtained by the test and original data of the power MAP table. The power capability of the power battery and the system thereof can be effectively detected, and the detection efficiency and precision are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power battery power testing, and in particular to a vehicle power battery power testing method and system based on a power MAP table. Background Art

[0002] With the growing development of the new energy vehicle industry, the power battery and power battery system in the vehicle provide certain key functions for the vehicle. The power capacity of this key function seriously affects the user experience during the operation of the vehicle. The power performance of the power battery is related to the starting and acceleration characteristics of the vehicle and is one of the important parameters of the vehicle. Therefore, it is necessary to test the power performance of the power battery to ensure the reliability of the vehicle operation.

[0003] The existing power test methods for power batteries are mostly to manually look up the table to set the corresponding power and temperature in the detection charging and discharging cabinet for testing. However, the editing of the power battery operation steps in this test process is relatively complicated, and there is a certain possibility of error in manual table lookup, and there are situations such as parameter entry errors. Once the input error occurs, retesting is required, resulting in a waste of time and cost, and delaying the timeliness. In addition, this error will also lead to the inability to synchronize the BOL (initial state of life) of the product, resulting in a certain deviation between the test results and the actual BOL state, and thus the power capacity of the power battery cannot be effectively and accurately tested, and its test efficiency and accuracy are low. Summary of the invention

[0004] In order to solve the deficiencies of the above-mentioned prior art, the present invention provides a vehicle power battery power testing method and system based on a power MAP table, designs a specific test logic strategy, and directly integrates and applies the strategy to the detection charging and discharging cabinet, and utilizes the detection charging and discharging cabinet to automatically identify each test point in the imported power MAP, and test each test point in turn according to the set order, statistically analyzes all data in the test process and displays it, thereby completing the test of the power battery power, and can achieve efficient and accurate detection of the power battery power capacity, avoiding the problems of low test efficiency and accuracy caused by human operation.

[0005] In a first aspect, the present invention provides a vehicle power battery power testing method based on a power MAP table.

[0006] A vehicle power battery power test method based on a power MAP table is applied to a charge and discharge detection cabinet, the method comprising:

[0007] According to the imported power MAP table, multiple temperature and SOC state test points in the table are identified, and the property parameters of the power test are determined; the property parameters include the charge and discharge operation mode, mode, and operation time, and the mode is the power / current value;

[0008] Based on the identified test points and property parameters, combined with the selected set constant capacity method, the power test is performed on the power battery of the vehicle to be tested; wherein, multiple temperature test points are tested in a sequence from high temperature to low temperature, and multiple SOC state test points are tested in different sequences according to different charge and discharge operation modes;

[0009] Based on the data obtained from the test and the original data of the power MAP table, the key data of each MAP test point, the capacity value at each temperature, the adjusted capacity value in each test step, and the operating capacity value are obtained.

[0010] In a further technical solution, the charging and discharging operation mode includes charging or discharging, which is used to identify the current direction of each test point in the power MAP table;

[0011] The mode is a power / current value, i.e., a P / A value, which is used to distinguish between power and current in a power MAP table;

[0012] The running time is used to determine the running time of the P / A value of each test point.

[0013] A further technical solution is to simultaneously obtain the highest and lowest cell voltages of the power battery of the vehicle to be tested when identifying the imported power MAP table.

[0014] A further technical solution is to set the constant capacity method, including: constant capacity at room temperature, T constant capacity, and capacity test at a specified temperature; wherein, under the constant capacity at room temperature and T constant capacity methods, the discharge constant capacity ratio, charge constant capacity ratio and initial charging temperature at the corresponding temperature are extracted and obtained.

[0015] A further technical solution is to select different sequences to test multiple SOC state test points according to different charging and discharging operation modes, including:

[0016] In the discharge operation mode, multiple SOC state test points are tested in the order from the highest SOC state to the lowest SOC state;

[0017] In the charging operation mode, multiple SOC state test points are tested in order from the lowest SOC state to the highest SOC state.

[0018] A further technical solution is to test the power battery of the vehicle to be tested at multiple SOC state test points in the discharge operation mode, including:

[0019] Select the highest temperature for constant volume testing;

[0020] During the test, the test points are tested sequentially starting from the highest SOC state of self-discharge. After each test point is tested, the actual capacity value of the accumulated test point is adjusted downward to the next SOC state test point and temperature adapted, and then the next SOC state test point is tested;

[0021] After completing the test of the lowest SOC state test point at the highest temperature, empty the battery and confirm the difference between the remaining capacity and the theoretical value of the adjusted SOC state to determine the deviation range of the current round of testing;

[0022] According to the constant volume test method of the highest temperature, the constant volume test of the next temperature test point is carried out until the constant volume test of the lowest temperature test point is completed.

[0023] A further technical solution is to test the power battery of the vehicle under test at multiple SOC state test points in the charging operation mode, including:

[0024] Select the highest temperature for constant volume testing;

[0025] During the test, the test points are tested sequentially starting from the lowest SOC state of charge. After each test point is tested, the actual capacity value accumulated at the test point is adjusted upward to the previous SOC state test point and temperature adapted, and then the next SOC state test point is tested;

[0026] After completing the test of the lowest SOC state test point at the highest temperature, empty the battery and confirm the difference between the remaining capacity and the theoretical value of the adjusted SOC state to determine the deviation range of the current round of testing;

[0027] According to the constant volume test method of the highest temperature, the constant volume test of the next temperature test point is carried out until the constant volume test of the lowest temperature test point is completed.

[0028] In a second aspect, the present invention provides a vehicle power battery power testing system based on a power MAP table.

[0029] A vehicle power battery power test system based on a power MAP meter is applied to a charge and discharge detection cabinet, and the system includes:

[0030] A data acquisition module is used to identify multiple temperature and SOC state test points in the table according to the imported power MAP table, and determine the property parameters of the power test; the property parameters include the charging and discharging operation mode, mode, and operation time, and the mode is the power / current value;

[0031] The test module is used to perform a power test on the power battery of the vehicle to be tested based on the identified test points and property parameters and the selected set constant capacity method; wherein, a plurality of temperature test points are tested in a sequence from high temperature to low temperature, and a plurality of SOC state test points are tested in a different sequence according to different charge and discharge operation modes;

[0032] The output module is used to obtain the key data of each MAP test point, the capacity value at each temperature, the adjusted capacity value and the operating capacity value in each test step based on the data obtained from the test and the original data of the power MAP table.

[0033] In a third aspect, the present invention further provides an electronic device comprising a memory and a processor, and computer instructions stored in the memory and executed on the processor, wherein when the computer instructions are executed by the processor, the steps of the method described in the first aspect are completed.

[0034] In a fourth aspect, the present invention further provides a computer-readable storage medium for storing computer instructions, which, when executed by a processor, complete the steps of the method described in the first aspect.

[0035] One or more of the above technical solutions have the following beneficial effects:

[0036] 1. The present invention provides a vehicle power battery power testing method and system based on a power MAP table, designs a specific test logic strategy, directly integrates and applies the strategy to the detection charging and discharging cabinet, utilizes the detection charging and discharging cabinet to automatically identify each test point in the imported power MAP, and tests each test point in sequence according to the set order, statistically analyzes all data in the test process and displays it, thereby completing the test of the power battery power, and realizing efficient and accurate detection of the power battery power capacity, avoiding the problem of low test efficiency and accuracy caused by human operation.

[0037] 2. On the one hand, the present invention directly imports the power MAP and its test logic into the detection charge and discharge cabinet, and after the detection charge and discharge cabinet identifies the corresponding detection points, a plurality of power batteries are uniformly tested to avoid the disadvantages caused by manual table lookup operations; on the other hand, by unifying all detection points in the same detection program, the time for manually adjusting the temperature of the environmental chamber, compiling a single point test program and starting the corresponding program is effectively reduced, thereby avoiding time waste and effectively improving the test efficiency and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0039] Figure 1 This is a flow chart of a vehicle power battery power testing method based on a power MAP table according to an embodiment of the present invention;

[0040] Figure 2 A schematic diagram of a power / current MAP import template in an embodiment of the present invention;

[0041] Figure 3 Schematic diagram of a power / current MAP export template in an embodiment of the present invention. DETAILED DESCRIPTION

[0042] It should be noted that the following detailed descriptions are exemplary only, are intended to describe specific embodiments, are intended to provide further explanation of the present invention, and are not intended to limit exemplary embodiments according to the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those of ordinary skill in the art to which the present invention belongs. In addition, it should also be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0043] Embodiment 1

[0044] This embodiment provides a vehicle power battery power test method based on a power MAP table, which is applied to a charge and discharge detection cabinet. Figure 1 As shown, including:

[0045] Obtain the power MAP and import it into the charge and discharge detection cabinet, identify multiple temperature and SOC state test points in the power MAP, and determine the property parameters of the power MAP; the property parameters include the charge and discharge operation mode, mode, and operation time;

[0046] Based on the identified test points and property parameters, combined with the selected set constant capacity method, the actual capacity of the power battery of the vehicle to be tested is tested; wherein, multiple temperature test points are tested in a sequence from high temperature to low temperature, and multiple SOC state test points are tested in different sequences according to different charge and discharge operation modes;

[0047] Based on the test data and the original power MAP data, the adjustment capacity value and the operating capacity value when each SOC test point is adjusted are obtained by processing and calculating.

[0048] The vehicle power battery power testing method based on the power MAP table proposed in this embodiment is introduced in more detail through the following content.

[0049] Step S1, according to the imported power MAP table, identify multiple temperature and SOC state test points in the table, and determine the property parameters of the power test; the property parameters include the charging and discharging operation mode, mode, and operation time, and the mode is the power / current value.

[0050] Specifically, a chart recognition function is added to the step setting program of the charge and discharge detection cabinet to obtain the power MAP table and import it into the charge and discharge detection cabinet, so that the charge and discharge detection cabinet can identify multiple temperature and SOC status test points in the power MAP table. According to the identified test points, the battery SOC adjustment (whether to perform SOC adjustment and the SOC adjustment method can be selected according to actual conditions) and the environmental chamber temperature adjustment can be performed in turn.

[0051] Furthermore, the above-mentioned charge and discharge detection cabinet can also identify the property parameters of the power test in the power MAP table, and its recognition logic is:

[0052] The power MAP table in this embodiment adopts a power / current MAP table. The power MAP table template imported by the detection cabinet is as follows: Figure 2 As shown, the property parameters in the power MAP table template are identified, where the first line is the charge and discharge operation mode, including charging or discharging, which is used to identify the current direction of each test point in the power MAP table; the second line is the mode, including the power / current value (i.e., P / A value), which is used to distinguish the power and current in the power MAP table; the third line is the running time, which is used to determine the running time of the P / A value of each test point. Among them, the above three options can be designed simultaneously during the design process, and can be designed to make corresponding property selections in the pop-up window options in the import stage, and then import the power MAP table. In addition, Figure 2 The number of rows and columns of the template shown is only an example, and this embodiment does not have a fixed definition for the number of rows and columns.

[0053] Furthermore, through the above method, the charge and discharge detection cabinet can identify the SOC state of the row corresponding to the temperature in the first column of the power MAP table. When charging, it adjusts its SOC state by integrating ampere-hours to provide a capacity value or the actual capacity obtained by testing (performing constant capacity at temperature T).

[0054] In addition, during the above test process, the detection charging and discharging cabinet also identifies the highest and lowest single cell voltages of the power battery of the vehicle to be tested (default charging identification). Specifically, the battery system detection cabinet can find the corresponding variables (i.e. the highest and lowest single cell voltages) by screening in the product dbc, and on this basis, the highest and lowest single cell voltages can be manually selected in the detection charging and discharging cabinet. In addition, the single cell detection cabinet does not need to determine this parameter.

[0055] Step S2: Based on the identified test points and property parameters, combined with the selected constant capacity setting method, a power test is performed on the power battery of the vehicle to be tested; wherein, a plurality of temperature test points are tested in a sequence from high temperature to low temperature, and at the same time, a plurality of SOC state test points are tested in a different sequence according to different charge and discharge operation modes.

[0056] Specifically, the test operation logic of the charge and discharge detection cabinet is:

[0057] During the test, first, the charge and discharge test cabinet can perform capacity tests on the power battery to be tested according to the set options (i.e., pre-set constant capacity methods), including constant capacity at room temperature, constant capacity at temperature T, and capacity test at a specified temperature, so as to obtain the actual capacity of the power battery. Among them, constant capacity refers to obtaining its actual capacity through charging and discharging at a certain temperature.

[0058] Furthermore, considering that the capacity test at a specified temperature directly provides a certain constant for the user, there is no need to carry out a capacity test. Therefore, in addition to the capacity test at a specified temperature, for other capacity determination methods such as capacity determination at room temperature and capacity determination at temperature T, the charge and discharge detection cabinet will prompt the user to submit the discharge capacity determination rate, charge rate and initial charging temperature at the corresponding temperature in advance, that is, to obtain the discharge capacity determination rate, charge capacity determination rate and initial charging temperature at the corresponding temperature in advance.

[0059] Secondly, the charge and discharge detection cabinet determines and selects corresponding measurement points (referred to as points) through the test points identified by the above step S1, such as selecting all or some of the points.

[0060] Then, the power battery of the vehicle to be tested is subjected to a power test. During this process, different sequences are selected to test multiple SOC state test points according to different charging and discharging operation modes, including: in the discharge operation mode, multiple SOC state test points are tested in the sequence from the highest SOC state to the lowest SOC state; in the charging operation mode, multiple SOC state test points are tested in the sequence from the lowest SOC state to the highest SOC state. The above test process is specifically as follows:

[0061] (1) In the discharge mode, the power test of the vehicle power battery to be tested is carried out, including:

[0062] When the charge and discharge detection cabinet is in full operation mode, the constant capacity test mode is selected first. In this embodiment, the highest temperature T1 is selected for the constant capacity test to obtain the actual capacity. Then, the discharge starts from the highest SOC state, and each temperature-SOC state point is tested in turn. Each test point is tested after the set time, and the P / A value at each test point is obtained. During the test, after the test of the current SOC state test point is completed, the program in the detection cabinet will accumulate the actual capacity value of the test point and adjust it downward to the next SOC state test point and adapt to the temperature.

[0063] Specifically, the SOC states in the MAP table under the discharge operation mode are 100%, 50%, and 30% as an example for further explanation. At the test point of the highest temperature T1-the highest SOC state of 100%, the discharge is performed at the set power or current in a set time period under the test point to obtain the final discharge capacity Q1. After that, the program in the detection cabinet will continue to adjust to the next test point, that is, the highest temperature T1-SOC state of 50%. However, due to the discharge capacity Q1 generated when testing at 100%, when adjusting the SOC of the power battery, it will not be directly adjusted downward by 50%, but the actual required adjustment capacity value will be recalculated based on the discharge capacity Q1, which is: the required adjustment capacity value of the detection cabinet = the discharge capacity value Q0*(1-(1-50%)) obtained by the capacity test-the discharge capacity value Q1 generated by the test step. In this way, the actual capacity value of the accumulated test points is adjusted downward to the next SOC state test point after calculation, so as to ensure the accuracy of the test.

[0064] After that, the next SOC state test point will be tested. After completing the test of the lowest SOC state test point at the highest temperature, discharge and confirm the adjustment of the SOC state remaining capacity and the theoretical difference to determine the deviation range of the current round of testing. Specifically, through the above-mentioned discharge MAP detection method, when discharged to 5% SOC and completing the corresponding detection power point, the theoretical SOC should be 3% (assumed value) at this time. If the capacity value generated by discharging to the cut-off voltage of the battery or battery system accounts for 3% of Q0, it means that there is no deviation in this round of testing. If it is 2% or other values, it means that there are certain deviations in the tested points, and the deviation will be synchronously informed to the user in the final result.

[0065] Similarly, according to the above-mentioned constant volume test method of the highest temperature T1, the constant volume test of the next temperature T2 test point is carried out until the constant volume test of the lowest temperature test point is completed.

[0066] (2) In charging mode, the actual capacity of the power battery of the vehicle to be tested is tested, including:

[0067] When the detection charging and discharging cabinet is fully in operation mode, first select the highest temperature T1 for constant capacity test to obtain the actual capacity. Among them, for charging and adjusting SOC in charging mode, the charging and discharging detection cabinet supports the advance input of the charging and discharging energy efficiency ratio under the corresponding SOC state. When the detection cabinet adjusts the SOC state during charging, the corresponding discharge capacity is converted into its theoretical capacity value according to the charging and discharging energy efficiency. Specifically, since discharge is usually used to adjust the SOC, and the charging MAP is a continuous upward adjustment process, charging and discharging will not be an equivalent value (determined by the characteristics of the battery product), which produces charging and discharging energy or capacity efficiency, and the charging capacity is higher than the discharge capacity. Therefore, at each corresponding SOC adjustment capacity, the original discharge capacity value is charged according to the corresponding proportion of the corresponding discharge to charging ratio (i.e., the charging and discharging energy efficiency) multiplied by the corresponding discharge to charging ratio.

[0068] During the test, point tests are carried out in sequence starting from the lowest SOC state of charging. After each test point is tested, the actual capacity value accumulated at the test point is adjusted upward to the previous SOC state test point and temperature adapted, and then the next SOC state test point is tested. After the test of the lowest SOC state test point at the highest temperature is completed, the battery is discharged and the difference between the adjusted SOC state remaining capacity and the theoretical value is confirmed to determine the deviation range of the current round of tests.

[0069] Similarly, according to the constant volume test method of the highest temperature T1, the constant volume test of the next temperature T2 test point is carried out until the constant volume test of the lowest temperature test point is completed.

[0070] Step S3: Based on the data obtained from the test and the original data of the power MAP table, key data of each MAP test point, capacity values ​​at each temperature, adjusted capacity values ​​in each test step, and operating capacity values ​​are obtained.

[0071] Specifically, the calculation result of the charge and discharge detection cabinet is:

[0072] (1) The charge and discharge test cabinet filters out this type of key data through the test end data of each point in the original data. The key data refers to the single-section data of each MAP test point, including Figure 3 The running time and the lowest / highest voltage of the monomer at the end of the operation are shown, where the discharge MAP automatically takes the lowest voltage of the monomer, and the charge MAP automatically takes the highest voltage of the monomer;

[0073] (2) The charge and discharge test cabinet identifies the capacity value corresponding to each temperature through the raw data, including the set capacity value that can be directly set to the corresponding temperature capacity value without performing a constant capacity test, and the measured capacity value obtained by performing a constant capacity test at each temperature according to the steps;

[0074] (3) The charge and discharge test cabinet uses the original data to identify the adjusted capacity value and the operating capacity value of the test point at each step of adjusting the SOC, so that the tester can confirm the SOC adjustment. Among them, the adjusted capacity value refers to the single-step capacity of adjusting the SOC, and the operating capacity value refers to the capacity generated by the operating power test or current test. Furthermore, based on the capacity Q0 at the corresponding temperature, the adjusted capacity value = (test SOC point before adjustment * Q0-test SOC point after adjustment * Q0) * Q0-operating capacity value; if it is a charging process, the adjusted capacity value = (test SOC point before adjustment * Q0-test SOC point after adjustment * Q0) * Q0 + operating capacity value. In fact, since the detection charge and discharge cabinet usually has a definition ± distinction between charging and discharging capacity, the formula here can also be left unchanged.

[0075] Through the above method, the charge and discharge detection cabinet performs joint debugging and environmental chamber adjustment through a pre-set logical strategy to complete the test work. This method can effectively shorten the test cycle, speed up the test progress, and avoid test errors.

[0076] Embodiment 2

[0077] This embodiment provides a vehicle power battery power test system based on a power MAP table, which is applied to a charge and discharge detection cabinet. The system includes:

[0078] A data acquisition module is used to identify multiple temperature and SOC state test points in the table according to the imported power MAP table, and determine the property parameters of the power test; the property parameters include the charging and discharging operation mode, mode, and operation time, and the mode is the power / current value;

[0079] The test module is used to perform a power test on the power battery of the vehicle to be tested based on the identified test points and property parameters and the selected set constant capacity method; wherein, a plurality of temperature test points are tested in a sequence from high temperature to low temperature, and a plurality of SOC state test points are tested in a different sequence according to different charge and discharge operation modes;

[0080] The output module is used to obtain the key data of each MAP test point, the capacity value at each temperature, the adjusted capacity value and the operating capacity value in each test step based on the data obtained from the test and the original data of the power MAP table.

[0081] Embodiment 3

[0082] This embodiment provides an electronic device, including a memory and a processor, and computer instructions stored in the memory and executed on the processor. When the computer instructions are executed by the processor, the steps in the vehicle power battery power test method based on the power MAP table as described above are completed.

[0083] Embodiment 4

[0084] This embodiment also provides a computer-readable storage medium for storing computer instructions. When the computer instructions are executed by a processor, the steps in the vehicle power battery power testing method based on the power MAP table as described above are completed.

[0085] The steps involved in the above embodiments 2 to 4 correspond to the method embodiment 1, and the specific implementation methods can refer to the relevant description part of embodiment 1. The term "computer-readable storage medium" should be understood as a single medium or multiple media including one or more instruction sets; it should also be understood to include any medium that can store, encode or carry an instruction set for execution by a processor and enable the processor to execute any method in the present invention.

[0086] Those skilled in the art should understand that the modules or steps of the present invention described above can be implemented by a general-purpose computer device, or alternatively, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. The present invention is not limited to any specific combination of hardware and software.

[0087] The above description is only a preferred embodiment of the present invention. Although the specific implementation mode of the present invention is described in conjunction with the accompanying drawings, it is not a limitation of the protection scope of the present invention. Those skilled in the art should understand that on the basis of the technical solution of the present invention, various modifications or variations that can be made by those skilled in the art without creative work are still within the protection scope of the present invention.

Claims

1. A vehicle power battery power test method based on a power MAP table, applied to a charge and discharge detection cabinet, characterized in that: include: According to the imported power MAP table, multiple temperature and SOC state test points in the table are identified, and the property parameters of the power test are determined; the property parameters include the charge and discharge operation mode, mode, and operation time, and the mode is the power / current value; Based on the identified test points and property parameters, combined with the selected set constant capacity method, the power test is performed on the power battery of the vehicle to be tested; wherein, multiple temperature test points are tested in a sequence from high temperature to low temperature, and multiple SOC state test points are tested in different sequences according to different charge and discharge operation modes; Based on the data obtained from the test and the original data of the power MAP table, the key data of each MAP test point, the capacity value at each temperature, the adjusted capacity value in each test step, and the operating capacity value are obtained.

2. A vehicle power battery power test method based on a power MAP table as claimed in claim 1, characterized in that: The charging and discharging operation mode includes charging or discharging, which is used to identify the current direction of each test point in the power MAP table; The mode is a power / current value, i.e., a P / A value, which is used to distinguish between power and current in a power MAP table; The running time is used to determine the running time of the P / A value of each test point.

3. A vehicle power battery power test method based on a power MAP table as claimed in claim 1, characterized in that: When the imported power MAP table is identified, the highest and lowest single cell voltages of the power battery of the vehicle to be tested are obtained at the same time.

4. A vehicle power battery power test method based on a power MAP table as claimed in claim 1, characterized in that: The setting constant capacity mode includes: constant capacity at normal temperature, T constant capacity, and capacity test at a specified temperature; wherein, under the constant capacity at normal temperature and T constant capacity modes, the discharge constant capacity ratio, the charge constant capacity ratio, and the initial charging temperature at the corresponding temperature are extracted and obtained.

5. A vehicle power battery power test method based on a power MAP table as claimed in claim 1, characterized in that: According to different charging and discharging operation modes, different sequences are selected to test multiple SOC state test points, including: In the discharge operation mode, multiple SOC state test points are tested in the order from the highest SOC state to the lowest SOC state; In the charging operation mode, multiple SOC state test points are tested in order from the lowest SOC state to the highest SOC state.

6. A vehicle power battery power test method based on a power MAP table as claimed in claim 5, characterized in that: In the discharge operation mode, the power battery of the vehicle to be tested is tested at multiple SOC test points, including: Select the highest temperature for constant volume testing; During the test, the test points are tested sequentially starting from the highest SOC state of self-discharge. After each test point is tested, the actual capacity value of the accumulated test point is adjusted downward to the next SOC state test point and temperature adapted, and then the next SOC state test point is tested; After completing the test of the lowest SOC state test point at the highest temperature, empty the battery and confirm the difference between the remaining capacity and the theoretical value of the adjusted SOC state to determine the deviation range of the current round of testing; According to the constant volume test method of the highest temperature, the constant volume test of the next temperature test point is carried out until the constant volume test of the lowest temperature test point is completed.

7. A vehicle power battery power test method based on a power MAP table as claimed in claim 5, characterized in that: In the charging operation mode, the power battery of the vehicle to be tested is tested at multiple SOC test points, including: Select the highest temperature for constant volume testing; During the test, the test points are tested sequentially starting from the lowest SOC state of charge. After each test point is tested, the actual capacity value accumulated at the test point is adjusted upward to the previous SOC state test point and temperature adapted, and then the next SOC state test point is tested; After completing the test of the lowest SOC state test point at the highest temperature, empty the battery and confirm the difference between the remaining capacity and the theoretical value of the adjusted SOC state to determine the deviation range of the current round of testing; According to the constant volume test method of the highest temperature, the constant volume test of the next temperature test point is carried out until the constant volume test of the lowest temperature test point is completed.

8. A vehicle power battery power test system based on a power MAP meter, applied to a charge and discharge test cabinet, characterized in that: include: A data acquisition module is used to identify multiple temperature and SOC state test points in the table according to the imported power MAP table, and determine the property parameters of the power test; the property parameters include the charging and discharging operation mode, mode, and operation time, and the mode is the power / current value; The test module is used to perform a power test on the power battery of the vehicle to be tested based on the identified test points and property parameters and the selected set constant capacity method; wherein, a plurality of temperature test points are tested in a sequence from high temperature to low temperature, and a plurality of SOC state test points are tested in a different sequence according to different charge and discharge operation modes; The output module is used to obtain the key data of each MAP test point, the capacity value at each temperature, the adjusted capacity value and the operating capacity value in each test step based on the data obtained from the test and the original data of the power MAP table.

9. An electronic device, characterized in that: The invention comprises a memory and a processor and computer instructions stored in the memory and executed on the processor. When the computer instructions are executed by the processor, the steps of a vehicle power battery power testing method based on a power MAP table as described in any one of claims 1 to 7 are completed.

10. A computer-readable storage medium, characterized in that: Used to store computer instructions, which, when executed by a processor, complete the steps of a vehicle power battery power testing method based on a power MAP table as described in any one of claims 1-7.

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