Simulation test method and device for vehicle battery, vehicle and storage medium
A simulation test and vehicle technology, which is applied in the vehicle field, can solve problems such as inaccurate thermal simulation results and simulation data errors, and achieve the effects of reducing errors, improving accuracy, and ensuring accuracy
Pending Publication Date: 2022-03-18
GUANGZHOU XIAOPENG MOTORS TECH CO LTD
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Problems solved by technology
[0004] In view of the above problems, an embodiment of the present invention is proposed to provide a vehicle battery simulation test method, device, vehicle, and computer-readable storage medium to solve or partially solve the problem of There are errors in the simulation data, resulting in inaccurate thermal simulation results
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[0077] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0078] At present, the technology of new energy vehicles is becoming more and more mature, and people choose to buy new energy vehicles based on the consideration of the ecological environment and vehicle performance. New energy vehicles refer to the use of unconventional vehicle fuels as power sources (or the use of conventional vehicle fuels, but the use of new on-board power devices), the integration of advanced technologies in vehicle power control and drive, and the formation of advanced technical principles, Cars with new technology and new structure. New energy vehicles include: hybrid vehicles, pure electric vehicles, fuel cell vehicles, hydrogen engine vehicles, gas vehicles, alcohol ether vehicles, etc., and batteries oc...
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The embodiment of the invention provides a simulation test method and device for a vehicle battery, a vehicle and a storage medium, and the method comprises the steps: determining the current charge state of the vehicle battery, obtaining the actual test data corresponding to the current charge state, and the actual impedance and impedance response time of the actual test data; then acquiring test impedance corresponding to the current charge state, correcting the test impedance according to the actual impedance and the impedance response time, taking the corrected test impedance as target impedance corresponding to the current charge state, and performing a heat simulation test according to the target impedance to generate corresponding heat parameters, so that under the current charge state, the test impedance corresponding to the current charge state is obtained; according to the method, the impedance response time is adopted to carry out data processing on the test impedance, and the processed test impedance is calibrated and corrected through the actual impedance, so that the accuracy of the target impedance is improved, and when heat simulation analysis of the vehicle battery is carried out, the accurate target impedance can be adopted to carry out heat simulation calculation, so that the accuracy of heat simulation is improved.
Description
technical field [0001] The invention relates to the technical field of vehicles, in particular to a vehicle battery simulation test method, a vehicle battery simulation test device, a vehicle and a computer-readable storage medium. Background technique [0002] With the development of global new energy vehicles, the global market for lithium-ion power batteries is gradually expanding, and shipments are growing rapidly. At the same time, in addition to the increasing application of power batteries, we have also noticed accidents of new energy vehicles catching fire due to thermal runaway of power batteries. Among them, one of the important factors that induce the loss of control of the power battery is that the battery temperature of the vehicle is too high. For the vehicle, the battery temperature not only affects the service life of the vehicle, but also greatly reduces the performance of the vehicle. Therefore, when designing a battery, technicians often consider thermal ...
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IPC IPC(8): G01R31/367G01R31/389
CPCG01R31/367G01R31/389
Inventor 刘俊军叶邦斌仲亮
Owner GUANGZHOU XIAOPENG MOTORS TECH CO LTD