High-precision battery model

A battery model and high-precision technology, applied in the direction of measuring electricity, measuring electrical variables, and components of electrical measuring instruments, etc., can solve the problems of low output accuracy, low output response speed of battery simulators, and large output voltage ripple interference, etc. problem, to achieve the effect of high output precision, similar output characteristics, and fast output response speed

Active Publication Date: 2019-03-19
西安盛博飞电子科技有限公司
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Problems solved by technology

[0004] In the prior art, most of the battery simulators used to test the BMS of the battery management system adopt the DC / DC scheme. The battery simulator of the DC / DC scheme uses a switching power supply internally, and the switching frequency interferes a lot with the output voltage ripple, and The output response speed of the battery simulator of this scheme is low, and the output accuracy is also low, which has a certain gap with the real battery output characteristics.

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Embodiment Construction

[0022] The following will further describe the present application in detail with reference to the accompanying drawings in the embodiments of the present invention. It should be understood that the specific embodiments described here are only used to explain related inventions, not to limit the present invention. In addition, it should be noted that, based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0023] Refer below figure 1 The working principle of the high-precision battery model of the embodiment of the present invention will be described.

[0024] According to an embodiment of the present invention, such as figure 1 As shown, the micro control unit MCU controls the 20-bit DAC in the battery simulation unit to adjust the external input DC-12V in the power supply unit through the filter circuit and the output of the...

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Abstract

The invention discloses a high-precision battery model. The battery model comprises a micro control unit (MCU), a power supply unit, a temperature simulation unit, a battery model unit and an RS485 communication unit; the power supply unit internally adopts a low-dropout linear voltage regulator LDO for stabilized voltage output; a battery simulation unit internally adopts a high-precision ADC anda DAC for output sampling and control and can simulate a short circuit, an open circuit, reverse connection and other faults; the temperature simulation unit controls the output of simulation temperature and voltage through the micro control unit (MCU) to simulate the real battery temperature; the RS485 communication unit is connected to a 485 communication interface in the micro control unit (MCU) to control the battery simulation unit. Compared with a battery simulator in the market, the high-precision battery model has the advantages that the output precision and the response speed are higher, isolated output is adopted, and multilevel series connection can be conducted for simulating the battery model.

Description

technical field [0001] The invention relates to the field of electric vehicle power supplies, in particular to a high-precision battery model. Background technique [0002] With the emergence of new energy electric vehicles and its rapid development in society, people are not only concerned about its low-carbon environmental protection and energy saving, but also pay more and more attention to its safety and reliability, and new energy electric vehicles The safety and reliability of the car depend to a large extent on the battery management system BMS of the electronic control unit. The main function of the battery management system BMS is to improve the utilization rate of the battery, prevent the battery from overcharging and overdischarging, and prolong the battery life. life, to monitor the state of the battery. For new energy electric vehicles, the battery management system BMS system is very important and is the core housekeeper of the battery. [0003] In the develo...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R1/28
CPCG01R1/28
Inventor 马延俊穆吉庆康利平
Owner 西安盛博飞电子科技有限公司
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