Battery test method, system, and electronic device

Abstract

This application proposes a battery testing method, system, and electronic device, belonging to the field of battery testing. The method includes: a signal decomposition device decomposes the test signal output by the battery testing equipment into millisecond-level test decomposition signals, and outputs the test decomposition signals to a screening device; the screening device simulates the operating environment and battery state, identifies and screens the test decomposition signals to obtain screening result signals, and outputs the screening result signals to the battery testing equipment; the battery testing equipment controls the switching of test signals based on the screening result signals and the target test duration to conduct simulated testing of the battery under target standard operating conditions. Thus, achieving millisecond-level instantaneous switching of test signals during battery testing greatly improves the accuracy of battery testing, enabling the testing of the battery's actual performance as accurately as possible, and contributing to improving the accuracy of battery R&D performance and impact assessment.

Description

Technical Field

[0001] This application relates to the field of battery testing, and more specifically, to a battery testing method, system, and electronic device. Background Technology

[0002] Power batteries are a core component of new energy vehicles, providing power for electric vehicles. To evaluate the quality and performance of power batteries, testing is typically required.

[0003] Existing battery testing equipment typically only allows for power switching at minimum intervals of 0.1 seconds, failing to achieve millisecond-level precision in instantaneous charge / discharge power switching. When battery requirements are millisecond-level, existing testing equipment cannot accurately and automatically switch between power values ​​defined by different conditions, thus failing to test the battery's actual performance. This results in inadequate performance and impact assessment during project development, potentially leading to irreversible market quality issues. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide a battery testing method, system and electronic device that achieves millisecond-level instantaneous charge and discharge power switching during battery testing, so as to test the actual performance that the battery can achieve as much as possible, which helps to improve the accuracy of battery R&D performance and impact assessment.

[0005] To achieve the above objectives, the technical solutions adopted in the embodiments of this application are as follows: In a first aspect, embodiments of this application provide a battery testing method applied to a battery testing system. The battery testing system includes a screening device, a signal decomposition device, and a battery testing device. The output terminal of the battery testing device is connected to the input terminal of the signal decomposition device, the input terminal of the battery testing device is connected to the output terminal of the screening device, and the output terminal of the signal decomposition device is connected to the input terminal of the screening device. The method includes: The battery testing equipment outputs a test signal to the signal decomposition equipment; After receiving the test signal, the signal decomposition device decomposes the test signal into millisecond-level test decomposition signals and outputs the test decomposition signals to the screening device. The screening device simulates the operating environment and battery status, identifies and restricts the test decomposition signal, obtains the screening result signal, and outputs the screening result signal to the battery test device; The battery testing equipment controls the test signal to switch at the millisecond level based on the screening result signal and the target test duration, so as to conduct a simulated test of the battery under the target standard operating conditions.

[0006] In one possible implementation, the step of the screening device simulating the operating environment and battery status to identify and limit the test decomposition signal to obtain the screening result signal includes: Obtain the operating environment and battery status corresponding to the test signal; wherein, the operating environment includes the driving mode and environmental status of the vehicle where the battery is located, and the battery status includes the battery operating status and battery health. Based on the driving mode and the battery operating state, the test signal is initially restricted to obtain a first screening signal; Based on the environmental conditions and the battery health, the first screening signal is subjected to secondary restrictions to obtain the screening result signal.

[0007] In one possible implementation, the step of initially limiting the test signal based on the driving mode and the battery operating state to obtain a first screening signal includes: Based on the driving mode and the battery operating status, determine the battery power strategy corresponding to the current test phase; Obtain the maximum power corresponding to the battery power strategy, and limit the power in the test signal that is greater than the maximum power to the maximum power to obtain the first screening signal.

[0008] In one possible implementation, the step of applying a secondary constraint to the first screening signal based on the environmental state and the battery health to obtain a screening result signal includes: Based on the environmental conditions and the battery health, the corresponding loss coefficient is determined, and the product of the loss coefficient and the maximum power is used as the simulated power. The first screening signal and the loss coefficient are calculated to obtain the second screening signal. The power in the second screening signal that is greater than the analog power is limited to the analog power to obtain the screening result signal.

[0009] In one possible implementation, the battery testing equipment controls the test signal to switch at the millisecond level based on the screening result signal and the target test duration to perform a simulated test of the battery under target standard operating conditions, including: The battery testing equipment calculates the number of test cycles based on the target test duration and the operating time under the target standard conditions; When the current signal state of the screening result signal, the target standard operating condition, and the number of test cycles determine that the operating condition cycle conditions are met at the current moment, the battery testing equipment switches the signal value of the test signal to the initial signal value of the target standard operating condition.

[0010] In one possible implementation, the step of determining that the current time meets the operating condition switching conditions includes: Based on the current signal value and running time of the screening result signal, the current stage of the screening result signal is determined to be the working condition stage corresponding to one round of the target standard working condition. If the working condition stage is the end stage of the target standard working condition and the number of tests of the target standard working condition has not reached the number of test cycles, then it is determined that the working condition cycle condition is met at the current time.

[0011] Secondly, embodiments of this application provide a battery testing method applied to a screening device, wherein the input terminal of the screening device is connected to the output terminal of a signal decomposition device, the output terminal of the screening device is connected to the input terminal of a battery testing device, and the output terminal of the battery testing device is connected to the input terminal of the signal decomposition device. The method includes: Upon receiving the test decomposition signal output by the signal decomposition device, the system simulates the operating environment and battery status to identify and restrict the test decomposition signal, thereby obtaining a screening result signal. The screening result signal is output to the battery testing equipment; wherein, the screening result signal is used to instruct the battery testing equipment to control the test signal to switch at the millisecond level based on the screening result signal and the target test duration, so as to conduct a simulated test of the battery under the target standard operating conditions; The test decomposition signal is the signal obtained by decomposing the test signal output by the battery test equipment at the millisecond level.

[0012] In one possible implementation, the step of identifying and limiting the test decomposition signal based on the simulated operating environment and battery state to obtain the filtered result signal includes: Obtain the operating environment and battery status corresponding to the test signal; wherein, the operating environment includes the driving mode and environmental status of the vehicle where the battery is located, and the battery status includes the battery operating status and battery health. Based on the driving mode and the battery operating state, the test signal is initially restricted to obtain a first screening signal; Based on the environmental conditions and the battery health, the first screening signal is subjected to secondary restrictions to obtain the screening result signal.

[0013] Thirdly, embodiments of this application provide a battery testing system, including a screening device, a signal decomposition device, and a battery testing device. The output terminal of the battery testing device is connected to the input terminal of the signal decomposition device, the input terminal of the battery testing device is connected to the output terminal of the screening device, and the output terminal of the signal decomposition device is connected to the input terminal of the screening device. The battery testing equipment is used to output test signals to the signal decomposition equipment; The signal decomposition device is used to receive the test signal, decompose the test signal into millisecond-level test decomposition signals, and output the test decomposition signals to the screening device. The screening device is used to simulate the operating environment and battery status, identify and limit the test decomposition signal, obtain the screening result signal, and output the screening result signal to the battery test device; The battery testing equipment is used to control the test signal to switch at the millisecond level based on the screening result signal and the target test duration, so as to conduct a simulated test of the battery under the target standard operating conditions.

[0014] Fourthly, embodiments of this application provide an electronic device including a processor and a memory, the memory storing machine-executable instructions executable by the processor, the processor executing the machine-executable instructions to implement the battery testing method as described in any possible implementation of the second aspect.

[0015] Fourthly, embodiments of this application provide a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the battery testing method as described in any possible implementation of the second aspect.

[0016] The battery testing method, system, and electronic device provided in this application include: a signal decomposition device decomposes the test signal output by the battery testing equipment into millisecond-level test decomposition signals, and outputs the test decomposition signals to a screening device; the screening device simulates the operating environment and battery state, identifies and screens the test decomposition signals to obtain screening result signals, and outputs the screening result signals to the battery testing equipment; the battery testing equipment controls the switching of test signals based on the screening result signals and the target test duration to conduct simulated testing of the battery under target standard operating conditions. Thus, achieving millisecond-level instantaneous switching of test signals during battery testing greatly improves the accuracy of battery testing, enabling the testing of the battery's actual performance as accurately as possible, and contributing to improved accuracy in battery R&D performance and impact assessment.

[0017] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the battery testing system provided in an embodiment of this application is shown.

[0020] Figure 2 One of the schematic flowcharts of the battery testing method provided in this application is shown.

[0021] Figure 3 It shows Figure 2 A flowchart illustrating some sub-steps of step S15.

[0022] Figure 4 It shows Figure 3 A flowchart illustrating some sub-steps of step S152.

[0023] Figure 5 A schematic diagram of the test signals for the standard operating conditions provided in the embodiments of this application is shown.

[0024] Figure 6 A schematic diagram of the first screening signal provided in an embodiment of this application is shown.

[0025] Figure 7 It shows Figure 3 A flowchart illustrating some sub-steps of step S153.

[0026] Figure 8 A schematic diagram of the filtering result signal provided in an embodiment of this application is shown.

[0027] Figure 9 The second schematic flowchart of the battery testing method provided in the embodiments of this application is shown.

[0028] Figure 10 A schematic diagram of the structure of an electronic device provided in an embodiment of this application is shown.

[0029] Explanation of reference numerals in the attached figures: 1000 - Battery testing system; 10 - Battery testing equipment; 20 - Signal decomposition equipment; 30 - Screening equipment; 40 - Electronic equipment. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0032] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] The battery testing method provided in this application embodiment can be applied to the battery testing system 1000 shown in the figure. The battery testing system 1000 may include a battery testing device 10, a signal decomposition device 20, and a screening device 30. The output terminal of the battery testing device 10 is connected to the input terminal of the signal decomposition device 20, the input terminal of the battery testing device 10 is connected to the output terminal of the screening device 30, and the output terminal of the signal decomposition device 20 is connected to the input terminal of the screening device 30.

[0034] The battery testing equipment 10 may include a battery and a testing control device. The testing control device is connected to the battery, the control terminal of the battery is connected to the control terminal of the testing control device, the output terminal of the battery is connected to the signal decomposition device 20, and the input terminal of the testing control device is connected to the output terminal of the screening device 30.

[0035] The test control equipment and screening equipment 30 can be, but are not limited to, personal computers, laptops, tablets, mobile terminals, wearable portable devices, etc. The signal decomposition equipment 20 can be a high-frequency data logger, without specific limitations.

[0036] In one possible implementation, a battery testing method is provided, referring to... Figure 2 This may include the following steps. In this embodiment, the battery testing method is applied to... Figure 1 The battery testing system 1000 in the example is used to illustrate this.

[0037] S11, the battery testing equipment outputs a test signal to the signal decomposition equipment.

[0038] S13, after receiving the test signal, the signal decomposition device decomposes the test signal into millisecond-level test decomposition signals and outputs the test decomposition signals to the screening device.

[0039] S15, the screening equipment simulates the operating environment and battery status, identifies and filters the test decomposition signals, obtains the screening result signal, and outputs the screening result signal to the battery test equipment.

[0040] S17, the battery testing equipment controls the test signal to switch at the millisecond level based on the screening result signal and the target test duration, so as to conduct a simulated test of the battery under the target standard working conditions.

[0041] This can be understood as follows: the tester can pre-determine all standard operating conditions to be tested, input the standard operating conditions and their corresponding test durations into the test control equipment, and specify the operating environment and battery state for each standard operating condition. Before testing each target standard operating condition, the tester can select the operating environment and battery state in the screening device 30. At the start of the test, the test control equipment, based on the target standard operating condition, controls the battery to output a test signal to the signal decomposition device 20. This test signal may include discharge power or charging power.

[0042] When the signal decomposition device 20 receives the test signal, it immediately decomposes the test signal into millisecond-level test decomposition signals and outputs them to the screening device 30. The screening device 30 identifies and restricts the test decomposition signals output by the signal decomposition device 20 based on the operating environment and battery status, and obtains and outputs millisecond-level screening result signals.

[0043] The test control equipment receives the screening result signal output by the screening equipment 30. Based on the screening result signal and the target test duration, it controls the test signal to switch the signal value at the millisecond level (switching the charge and discharge power values ​​when the current charge and discharge power is at that time) to conduct a simulated test of the battery under the target standard operating conditions. For example, if the power of the test signal is 50kW at 180ms, the power of the test signal is switched to 30kW at 181ms.

[0044] Compared with traditional battery testing methods, the present application achieves millisecond-level instantaneous switching of test signals during battery testing through the above steps S11 to S17, which greatly improves the accuracy of battery testing, so as to test the actual performance that the battery can achieve as much as possible, and helps to improve the accuracy of battery R&D performance and impact assessment.

[0045] In one possible implementation, refer to Figure 3 The process of screening the equipment's simulated operating environment and battery status in step S15, identifying and screening the test decomposition signals, and obtaining the screening result signals may include the following steps.

[0046] S151, acquire the operating environment and battery status corresponding to the test signal.

[0047] In this embodiment, the operating environment may include the driving mode and environmental conditions of the vehicle where the battery is located, and the battery status may include the battery operating status and battery health.

[0048] S152, based on the driving mode and battery operating status, the test signal is initially restricted to obtain the first screening signal.

[0049] S153, based on the environmental conditions and battery health, the first screening signal is subjected to secondary restrictions to obtain the screening result signal.

[0050] For step S151, the operating environment and battery status can be input by the test personnel, or generated by the test personnel through data selection. Alternatively, the screening device 30 can pre-store multiple sets of test tasks, each set of test tasks including the operating environment and battery status. During testing, the screening device 30 can sequentially retrieve the test tasks to obtain the operating environment and battery status. For example, if there are test tasks A, B, and C, for each standard operating condition test, test tasks A, B, and C are sequentially retrieved as simulation conditions for the test.

[0051] Driving modes may include Eco mode, Driving mode, Sport mode, Snow mode, and Standard Comfort mode, etc. Environmental conditions may include ambient temperature, battery operating conditions may include battery temperature, battery voltage, and SOC (State of Charge), etc., and battery health may include the battery's state of health (SOH).

[0052] Optionally, the screening device 30 may be configured with a battery power strategy table (i.e., BMS power strategy table) and a battery control strategy table (BMS control strategy table). The BMS power strategy table may record the relationship between a mode state array consisting of driving mode and battery operating state and the battery power strategy, for example, it may be [driving mode, battery operating state, battery power strategy]. Similarly, the BMS control strategy table may record the relationship between an environmental health array consisting of environmental conditions and battery health and the battery control strategy, for example, it may be [environmental conditions, battery health, battery control strategy].

[0053] Battery power strategies can include maximum power, and battery control strategies can include loss coefficients.

[0054] Optionally, one implementation of step S152 is provided, referring to... Figure 4 This includes the following steps.

[0055] S1521, determine the battery power strategy corresponding to the current test phase based on the driving mode and battery operating status.

[0056] S1522, obtain the maximum power corresponding to the battery power strategy, limit the power in the test signal that is greater than the maximum power to the maximum power, and obtain the first screening signal.

[0057] After obtaining the operating environment and battery status, the screening device 30 can query the corresponding battery power strategy from the battery power strategy table. Based on the maximum power in the battery power strategy, the power of the received test signal that is greater than the maximum power is limited to the maximum power, thereby obtaining the first screening signal.

[0058] For example, the maximum power of the battery power strategy corresponding to the operating environment and battery state is 69kW, and the test decomposition signal is as follows: Figure 5 As shown, the power value exceeds 69kW during some time periods. After processing in steps S1521 to S1522, the first filtering signal is obtained as follows: Figure 6 As shown, the maximum power of the first screening signal is 69kW.

[0059] Optionally, the battery control strategy includes a loss factor, which takes into account the losses caused by battery health and environmental factors during actual use. Based on this, one implementation of step S153 is provided, referring to... Figure 7 This includes the following steps.

[0060] S1531 determines the corresponding loss coefficient based on environmental conditions and battery health, and uses the product of the loss coefficient and the maximum power as the simulated power.

[0061] S1532, calculate the first screening signal and the loss coefficient to obtain the second screening signal, limit the power in the second screening signal that is greater than the analog power to the analog power, and obtain the screening result signal.

[0062] The screening device 30 can retrieve the corresponding battery control strategy from the battery control strategy table based on the environmental conditions and battery health corresponding to the current target standard operating condition, and obtain the loss coefficient. The power values ​​at all time points of the first screening signal are multiplied by the loss coefficient to obtain the second screening signal. The product of the loss coefficient and the maximum power in the battery power strategy is used as the simulated power, and values ​​in the second screening signal greater than this simulated power are limited to simulated power to obtain the screening result signal.

[0063] For example, the loss coefficient corresponding to environmental conditions and battery health is 80%, and the first screening signal is as follows: Figure 6 As shown, the maximum power is 69kW, therefore the simulated power is 69*80%=55.2kW. After processing in steps S1531 to S1532, the obtained screening result signal is as follows. Figure 8 As shown, the maximum power of the filtered result signal is 55.2 kW.

[0064] Through steps S151 to S153 and their corresponding sub-steps, the test decomposition signals are filtered and limited by simulating the effects of the vehicle's driving mode, ambient temperature, battery temperature, SOC, battery voltage, and SOH, thus simulating the conditions under battery load and obtaining millisecond-level filtered result signals. This improves the precision and accuracy of the test, contributing to enhanced battery testing verification performance and the accuracy of impact assessment.

[0065] In another possible implementation, there can be multiple screening devices 30, with different screening devices 30 corresponding to different driving modes. The environmental conditions, battery operating conditions, and battery health can be pre-input into the screening devices 30. After the signal decomposition device 20 inputs the test decomposition signal into the screening device 30 corresponding to the current test driving mode, the screening device 30 can perform the above steps S152-S153 and related sub-steps according to its own corresponding driving model and the input environmental conditions, battery operating conditions, and battery health.

[0066] In one possible implementation, the screening device 30 may also have multiple screening modules. Different screening modules can correspond to different driving modes, and the environmental status, battery operating status, and battery health can be pre-input into the screening modules. After the signal decomposition device 20 inputs the test decomposition signal into the screening module corresponding to the current test driving mode in the screening device 30, the screening module can perform the above steps S152-S153 and related sub-steps according to its corresponding driving model and the input environmental status, battery operating status, and battery health.

[0067] For step S17, after receiving the screening result signal, the battery testing equipment 10 can calculate the number of test cycles based on the target test duration and the runtime of the target standard operating condition. Furthermore, when it is determined that the operating condition cycle conditions are met at the current moment based on the current signal state of the screening result signal, the target standard operating condition, and the number of test cycles, the battery testing equipment 10 switches the signal value of the test signal to the initial signal value of the target standard operating condition. The unit of the current moment is ms.

[0068] Optionally, the process of determining whether the current time meets the working condition switching conditions can be implemented as follows: The battery test equipment 10 can determine the current stage of the screening result signal in a round of target standard working conditions based on the current signal value and running time (millisecond level). If the working condition stage is the end stage of the target standard working condition and the number of tests of the target standard working condition has not reached the number of test cycles, then it is determined that the current time meets the working condition cycle conditions.

[0069] This can be understood as follows: when the test control equipment receives the screening result signal, it determines, based on the current signal value and running time of the screening result signal, that the current time (millisecond level) of the screening result signal is at the end time of a round of target standard operating conditions, and when the number of tests of the target standard operating conditions has not reached the number of test cycles, the test control equipment controls the battery to output the test signal (i.e., discharge power or charging power) corresponding to the initial stage of the target standard operating conditions at the next moment (millisecond level).

[0070] In other embodiments, the test control equipment can perform two timing operations: total duration timing and single-round duration timing. The test control equipment can determine in real time whether the end stage of a target standard operating condition round has been reached based on the current single-round duration timing, and determine whether the number of test cycles has been reached based on the current total duration timing. This controls the output of the battery's test signal.

[0071] In one possible implementation, a battery testing method is also provided, referring to... Figure 9 This may include the following steps. In this embodiment, the screening device 30 is the main body responsible for performing the battery testing method.

[0072] S21, when the test decomposition signal output by the signal decomposition device is received, the operating environment and battery status are simulated to identify and limit the test decomposition signal and obtain the screening result signal.

[0073] S23 outputs the screening result signal to the battery testing equipment.

[0074] In this embodiment, the screening result signal is used to instruct the battery testing equipment 10 to control the test signal to switch at the millisecond level based on the screening result signal and the target test duration, so as to conduct a simulated test of the battery under the target standard operating conditions.

[0075] Optionally, step S21 can be further implemented as shown in the figure, that is, refer to steps S151 to S153 and their sub-steps above, which will not be repeated in this embodiment.

[0076] Through steps S21 to S23 and related sub-steps, the millisecond-level test decomposition signal output is filtered and limited by simulating the driving mode of the vehicle where the battery is located, ambient temperature, battery temperature, SOC, battery voltage, and SOH. This simulates the situation under battery load, obtaining a filtered millisecond-level result signal. This helps the battery testing equipment to switch test signals at the millisecond level based on the filtered result signal. This improves the precision and accuracy of the test, contributing to enhanced battery testing verification performance and the accuracy of impact assessment.

[0077] In one possible implementation, a battery testing system 1000 is also provided, which can perform as follows: Figure 1 As shown, the device includes a screening device 30, a signal decomposition device 20, and a battery testing device 10. The output of the battery testing device 10 is connected to the input of the signal decomposition device 20, the input of the battery testing device 10 is connected to the output of the screening device 30, and the output of the signal decomposition device 20 is connected to the input of the screening device 30.

[0078] Battery testing equipment 10 is used to output test signals to signal decomposition equipment 20.

[0079] The signal decomposition device 20 is used to decompose the test signal into millisecond-level test decomposition signals after receiving the test signal, and output the test decomposition signals to the screening device 30.

[0080] The screening device 30 is used to simulate the operating environment and battery status, identify and limit the test decomposition signals, obtain the screening result signal, and output the screening result signal to the battery test device 10.

[0081] The battery testing equipment 10 is used to control the test signal to switch at the millisecond level based on the screening result signal and the target test duration, so as to conduct a simulated test of the battery under the target standard operating conditions.

[0082] In the aforementioned battery testing system 1000, the test signal output by the battery testing equipment 10 is decomposed into millisecond-level test decomposition signals by the signal decomposition device 20. After being filtered by the screening device 30, the millisecond-level screening result signal is transmitted back to the battery testing equipment 10. This allows the battery testing equipment 10 to switch the instantaneous test signal at the millisecond level based on the millisecond-level screening result signal, which greatly improves the accuracy of battery testing and allows for the testing of the actual performance that the battery can achieve as much as possible. This helps to improve the accuracy of battery R&D performance and impact assessment.

[0083] For specific limitations regarding the battery testing system 1000, please refer to the limitations on its application in battery testing methods mentioned above, which will not be repeated here.

[0084] In one embodiment, an electronic device 40 is provided, the internal structure of which can be shown in the figure below. Figure 10 As shown, the electronic device 40 includes a processor, memory, communication interface, and input device connected via a system bus. The processor of the electronic device 40 provides computing and control capabilities. The memory of the electronic device 40 includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The communication interface of the electronic device 40 is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, carrier networks, near-field communication (NFC), or other technologies. When the computer program is executed by the processor, it implements the optimization sampling method provided in the above embodiments.

[0085] Figure 10 The structure shown is merely a block diagram of a portion of the structure related to the present invention and does not constitute a limitation on the electronic device 40 to which the present invention is applied. The specific electronic device 40 may include, but is not limited to, the following: Figure 10 The diagram shows more or fewer components, or combinations of certain components, or different component arrangements.

[0086] In one embodiment, an electronic device 40 is provided, including: a processor and a memory for storing one or more programs; when the processor executes one or more programs, the following steps are performed: upon receiving a test decomposition signal output by a signal decomposition device, simulating the operating environment and battery state, identifying and limiting the test decomposition signal to obtain a screening result signal; and outputting the screening result signal to a battery testing device.

[0087] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, it performs the following steps: upon receiving a test decomposition signal output by a signal decomposition device, simulating the operating environment and battery state, identifying and limiting the test decomposition signal to obtain a screening result signal; and outputting the screening result signal to a battery testing device.

[0088] In summary, the battery testing method, system, and electronic equipment provided in this application have the following beneficial effects: (1) It enables the switching of test signals at the millisecond level, improving the test precision and the accuracy of the results; (2) The screening device filters and restricts the test decomposition signals at the millisecond level to simulate the influence of battery load and environment, and the battery testing equipment switches the test signals at the millisecond level according to the screening result signals, which can improve the accuracy of R&D performance and impact assessment; (3) It achieves millisecond-level screening and restriction precision, which greatly makes up for the current bench test test conditions that can only be fixed input and cannot be judged at the millisecond level; (4) By connecting the high-frequency data logger with the existing test equipment, the millisecond-level test signal screening and switching can be achieved, which can reduce test costs, reduce resource waste, and at the same time ensure the millisecond-level precision of the data; (5) The screening device is connected to the high-frequency data logger, which can update the most accurate data in real time, and the updated data is returned to the battery testing equipment to perform charge / discharge tests again, ensuring that the test is carried out normally and accurately.

[0089] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can also be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram and / or flowchart, and combinations of blocks in block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

[0090] In addition, the functional modules in the various embodiments of this application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0091] If the aforementioned functions are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0092] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A battery testing method, characterized in that, An application is made in a battery testing system, the battery testing system comprising a screening device, a signal decomposition device, and a battery testing device. The output terminal of the battery testing device is connected to the input terminal of the signal decomposition device, the input terminal of the battery testing device is connected to the output terminal of the screening device, and the output terminal of the signal decomposition device is connected to the input terminal of the screening device. The method includes: The battery testing equipment outputs a test signal to the signal decomposition equipment; After receiving the test signal, the signal decomposition device decomposes the test signal into millisecond-level test decomposition signals and outputs the test decomposition signals to the screening device. The screening device simulates the operating environment and battery status, identifies and restricts the test decomposition signal, obtains the screening result signal, and outputs the screening result signal to the battery test device; The battery testing equipment controls the test signal to switch at the millisecond level based on the screening result signal and the target test duration, so as to conduct a simulated test of the battery under the target standard operating conditions. The step of using the screening device to simulate the operating environment and battery status, identify and limit the test decomposition signals, and obtain the screening result signals includes: Obtain the operating environment and battery status corresponding to the test signal; wherein, the operating environment includes the driving mode and environmental status of the vehicle where the battery is located, and the battery status includes the battery operating status and battery health. Based on the driving mode and the battery operating state, the test signal is initially restricted to obtain a first screening signal; Based on the environmental conditions and the battery health, the first screening signal is subjected to secondary restrictions to obtain the screening result signal.

2. The battery testing method according to claim 1, characterized in that, The step of initially limiting the test signal based on the driving mode and the battery operating state to obtain a first screening signal includes: Based on the driving mode and the battery operating status, determine the battery power strategy corresponding to the current test phase; Obtain the maximum power corresponding to the battery power strategy, and limit the power in the test signal that is greater than the maximum power to the maximum power to obtain the first screening signal.

3. The battery testing method according to claim 2, characterized in that, The step of applying secondary constraints to the first screening signal based on the environmental state and the battery health to obtain a screening result signal includes: Based on the environmental conditions and the battery health, the corresponding loss coefficient is determined, and the product of the loss coefficient and the maximum power is used as the simulated power. The first screening signal and the loss coefficient are calculated to obtain the second screening signal. The power in the second screening signal that is greater than the analog power is limited to the analog power to obtain the screening result signal.

4. The pool test method according to any one of claims 1 to 3, characterized in that, The battery testing equipment, based on the screening result signal and the target test duration, controls the test signal to switch at the millisecond level to perform a simulated test of the battery under target standard operating conditions, including the following steps: The battery testing equipment calculates the number of test cycles based on the target test duration and the operating time under the target standard conditions; When the current signal state of the screening result signal, the target standard operating condition, and the number of test cycles determine that the operating condition cycle conditions are met at the current moment, the battery testing equipment switches the signal value of the test signal to the initial signal value of the target standard operating condition.

5. The battery testing method according to claim 4, characterized in that, The step of determining whether the operating condition switching conditions are met at the current moment includes: Based on the current signal value and running time of the screening result signal, the current stage of the screening result signal is determined to be the working condition stage corresponding to one round of the target standard working condition. If the working condition stage is the end stage of the target standard working condition and the number of tests of the target standard working condition has not reached the number of test cycles, then it is determined that the working condition cycle condition is met at the current time.

6. A battery testing method, characterized in that, The method is applied to a screening device, wherein the input end of the screening device is connected to the output end of a signal decomposition device, the output end of the screening device is connected to the input end of a battery testing device, and the output end of the battery testing device is connected to the input end of the signal decomposition device. The method includes: Upon receiving the test decomposition signal output by the signal decomposition device, the system simulates the operating environment and battery status to identify and restrict the test decomposition signal, thereby obtaining a screening result signal. The screening result signal is output to the battery testing equipment; wherein, the screening result signal is used to instruct the battery testing equipment to control the test decomposition signal to switch at the millisecond level based on the screening result signal and the target test duration, so as to conduct a simulated test of the battery under the target standard operating conditions; The test decomposition signal is the signal obtained by decomposing the test signal output by the battery test equipment at the millisecond level. The steps of identifying and limiting the test decomposition signals based on the simulated operating environment and battery status to obtain the filtered result signals include: Obtain the operating environment and battery status corresponding to the test signal; wherein, the operating environment includes the driving mode and environmental status of the vehicle where the battery is located, and the battery status includes the battery operating status and battery health. Based on the driving mode and the battery operating state, the test signal is initially restricted to obtain a first screening signal; Based on the environmental conditions and the battery health, the first screening signal is subjected to secondary restrictions to obtain the screening result signal.

7. A battery testing system, characterized in that, The system includes a screening device, a signal decomposition device, and a battery testing device. The output of the battery testing device is connected to the input of the signal decomposition device, and the input of the battery testing device is connected to the output of the screening device. The output of the signal decomposition device is also connected to the input of the screening device. The battery testing equipment is used to output test signals to the signal decomposition equipment; The signal decomposition device is used to receive the test signal, decompose the test signal into millisecond-level test decomposition signals, and output the test decomposition signals to the screening device; The screening device is used to acquire the operating environment and battery status corresponding to the test signal; wherein, the operating environment includes the driving mode and environmental status of the vehicle where the battery is located, and the battery status includes the battery operating status and battery health; based on the driving mode and the battery operating status, the test signal is initially restricted to obtain a first screening signal; based on the environmental status and the battery health, the first screening signal is further restricted to obtain a screening result signal, and the screening result signal is output to the battery testing device; The battery testing equipment is used to control the test signal to switch at the millisecond level based on the screening result signal and the target test duration, so as to conduct a simulated test of the battery under the target standard operating conditions.

8. An electronic device, characterized in that, It includes a processor and a memory, the memory storing machine-executable instructions that can be executed by the processor to implement the battery testing method as described in claim 6.

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