A power state estimation function test method and device for a power battery
A power state and power battery technology, applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc., can solve problems such as inability to test and verify the SOP estimation algorithm, difficulty in judging the reliability of SOP estimation results, and unreliable test results.
Active Publication Date: 2020-11-03
BEIJING JINGWEI HIRAIN TECH CO INC
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[0005] After research, the applicant found that the SOP estimation using the above method does not match the actual operating conditions, and the performance of the SOP estimation algorithm under dynamic operating conditions cannot be tested and verified, making the test results unreliable. In the prior art, it is difficult to judge the SOP estimation The reliability of the results, so how to evaluate the reliability of the SOP estimation results has become one of the technical problems to be solved urgently by those skilled in the art
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[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0048] In the prior art, many battery management system (Battery Management System, hereinafter referred to as BMS) manufacturers of new energy vehicles only have battery test data but no vehicle test data from OEMs. The situation does not match, making the SOP estimation results unreliable. The SOP estimation function test method involved in the present invention is applicable to the test situation without the test data of the dynamic working condition of the...
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The invention provides a power battery state-of-power (SOP) estimation function test method and device. The method includes the following steps: acquiring an SOP estimation result of a battery pack model calculated by a battery management system based on the physical information of batteries output by a hardware-in-the-loop simulation platform; calculating the total battery pack voltage and the single voltage of the battery pack model based on the maximum permissible pulse charging and discharging current at the next moment or the maximum permissible continuous charging and discharging currentat the next moment; and judging whether the SOP estimation result is reasonable by judging whether the total battery pack voltage is within a battery pack voltage alarm range and whether the single voltage is within the single voltage alarm range. Through the method and the device provided by the invention, the accuracy of reliability test of the SOP estimation result is improved.
Description
technical field [0001] The invention relates to the technical field of new energy vehicles, in particular to a power state estimation function test method and device for a power battery. Background technique [0002] Power battery is the main power source of new energy vehicles, and the management of power batteries is crucial to the use and safety of new energy vehicles. How to more accurately evaluate the real-time performance status of the system, so as to optimally manage the battery, give the vehicle the strongest output capability, the most efficient braking energy recovery, and prolong the service life of the battery are increasingly sought by those skilled in the art. Pay attention to. The purpose of power battery state of power (State Of Power, hereinafter referred to as SOP) estimation is to comprehensively evaluate the state of the battery, and to maximize the potential of the battery while ensuring battery safety. [0003] The core part of the current SOP estim...
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IPC IPC(8): G01R31/3835G01R31/396
Inventor 赵东欣
Owner BEIJING JINGWEI HIRAIN TECH CO INC