Battery simulation device and method for bms test
A battery simulation and current technology, which is applied in the direction of measuring devices, measuring electricity, and measuring electrical variables, etc., can solve the problems of battery voltage adjustment, cumbersome testing process, and inability to absorb balanced current, so as to achieve high safety and reliability and improve flexibility. Effect
Active Publication Date: 2020-06-12
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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[0029] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0030] A kind of battery simulation device for BMS test shown in the present invention, 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 adjustable linear power supply output voltage setting value output terminal of the main control module 1 and the adjustable linear power supply overcurrent The protection setting value output terminal is connected to the corresponding input terminal of the adjustable linear power supply 2, and the impedance adjustable load voltage setting value output terminal of the main control module 1 and the impedance adjustable load overcurrent protection setting value output terminal are connected to the impedance adjustable load The corresponding input terminal of 3, the load access terminal of the adjustab...
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The invention discloses a battery simulation device for BMS test. According to the invention, the adjustable linear power supply output voltage setting value output end of a main control module and the adjustable linear power supply over-current protection setting value output end of the main control module are connected with the corresponding input end of an adjustable linear power supply. The impedance adjustable load voltage setting value output end of the main control module and the impedance adjustable load over-current protection setting value output end of the main control module are connected with the corresponding input end of an impedance adjustable load. The load access end of the impedance adjustable load is connected to the output end of a battery simulation device. The acquisition end of a voltage sampling module is connected between the output end and the grounding end of the battery simulation device. The voltage sampling value output end of the voltage sampling moduleis respectively connected with the voltage feedback signal input ends of the adjustable linear power supply and the impedance adjustable load. According to the invention, the requirements of simulating the battery voltage and balancing the current bi-directional flow are met.
Description
technical field [0001] The invention relates to the technical field of battery management system testing, in particular to a battery simulation device and method for BMS 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 equalization function, its equalization funct...
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IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 严运思杨志浩方湘李鑫
Owner 武汉精能电子技术有限公司