Battery simulation system and method supporting bms active balancing function test
A technology for battery simulation and functional testing, which is applied in the direction of measuring electricity, power supply testing, and measuring electrical variables, etc. It can solve the problems of battery voltage adjustment, affecting the test efficiency of the battery management system, and cumbersome testing process, and achieves high safety and reliability.
Active Publication Date: 2020-09-18
武汉精能电子技术有限公司
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Problems solved by technology
However, for a battery management system with active equalization function, its equalization function has two states of charge equalization and discharge equalization. The test can be realized; when it is in the charging balance state, the internal balance circuit of the battery management system is equivalent to a constant current power supply, and the test cannot be completed because the adjustable voltage source cannot absorb the balance current
[0003] At present, the battery management system with active equalization function is generally tested with conventional batteries, but the voltage of the battery cannot be adjusted at any time according to the needs, which makes the test process more cumbersome and affects the test efficiency of the battery management system
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[0026] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0027] A battery simulation system supporting BMS active balancing function test shown in the present invention, such as figure 1 As shown, it includes a main control module 1, an adjustable linear power supply 2, an impedance adjustable load 3 and a voltage sampling module 4, the power signal input end of the adjustable linear power supply 2 is connected to the power input through an isolated power supply 7, and the main control module The output voltage setting value output terminal of the adjustable linear power supply 1 and the overcurrent protection setting value output terminal of the adjustable linear power supply are connected to the corresponding input terminal of the adjustable linear power supply 2, and the impedance of the main control module 1 is adjustable. The load voltage setting value The output terminal and the output terminal ...
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The invention discloses a battery simulation system supporting BMS active equalization function test. A main control module is used for conveying an adjustable linear power supply output voltage setting value and an adjustable linear power supply over-current protection setting value to an adjustable linear power supply, and conveying an impedance-adjustable load voltage setting value and an impedance-adjustable load over-current protection setting value to an impedance-adjustable load. The adjustable linear power supply is used to output the corresponding voltage, so that the system output voltage and the adjustable linear power supply output voltage set value are identical, and a corresponding over-current protection threshold is set. The impedance-adjustable load adjusts its own impedance, so that the system output end voltage is stabilized at the impedance-adjustable load voltage setting value, and the over-current protection threshold is set. The battery simulation system achievesthe requirement to simulate bi-directional flow of battery voltage and equalization current.
Description
technical field [0001] The invention relates to the technical field of battery management system testing, in particular to a battery simulation system and method supporting BMS active equalization function testing. Background technique [0002] The battery management system (BMS, BATTERY MANAGEMENT SYSTEM) is an important part of electric vehicles and energy storage systems. At present, when testing the BMS function, a high-precision adjustable voltage source is usually used to simulate the battery voltage. The management system is feasible, but does not meet the testing needs of a battery management system with active balancing. For a battery management system using passive balancing, when it is in a balanced state, the internal balancing circuit is equivalent to a resistive load, so the test only needs to simulate the battery voltage through an adjustable voltage source to provide sufficient balancing current. However, for a battery management system with active equalizat...
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IPC IPC(8): G01R31/00G01R31/40
CPCG01R31/00G01R31/40
Inventor 严运思何庆方湘李鑫
Owner 武汉精能电子技术有限公司