The invention relates to a high-voltage protection device for a power battery of a new energy vehicle. The high-voltage protection device comprises a state acquisition front end, a multiplexer and a power supply high-voltage management circuit, current and temperature signals of the state acquisition front end are respectively detected by a Hall sensor and a temperature sensor; the multiplexer is provided with a high-voltage switch and a low-voltage switch for selecting high-voltage information of the battery and analog low-voltage signals converted by temperature and current, and the state information of the battery entering the ADC is selected by switching on and switching off the switches. The power supply high-voltage management circuit is based on a linear voltage regulator structure, the power supply voltage rejection ratio of the circuit is improved by combining a pre-voltage-stabilizing circuit and a negative feedback loop, a soft start circuit is designed, and the electrification safety of the power supply management circuit is ensured.
本申请涉及新能源车动力电池高压保护装置,包括状态采集前端、多路选择器、电源高压管理电路。状态采集前端的电流与温度信号分别由霍尔传感器、温度传感器检测;多路选择器为选择电池高压信息和温度、电流转换的模拟低压信号,分别设计了高压开关和低压开关,通过开关的闭合和断开选择进入ADC中的电池状态信息。电源高压管理电路以线性稳压器结构为基础,采用预稳压电路和负反馈环路结合的方式提高电路的电源电压抑制比,设计软启动电路,保证电源管理电路的通电安全。
High-voltage protection device for power battery of new energy vehicle
新能源车动力电池高压保护装置
2022-06-03
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY |
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