Vehicle, pre-charging circuit and pre-charging method thereof
Vehicle, pre-charging circuit and pre-charging method thereof
- Neue Suche nach: LING HEPING
- Neue Suche nach: YAN LEI
- Neue Suche nach: LIU HAIJUN
- Neue Suche nach: GAO WEN
- Neue Suche nach: QIN GAI
- Neue Suche nach: LING HEPING
- Neue Suche nach: YAN LEI
- Neue Suche nach: LIU HAIJUN
- Neue Suche nach: GAO WEN
- Neue Suche nach: QIN GAI
The invention provides a vehicle, a pre-charging circuit and a pre-charging method thereof.The pre-charging circuit comprises a battery pack, a bridge arm unit, an energy storage module, a main positive relay, a main negative relay, a pre-charging capacitor and a control module, and the control module is configured to control a first power switch unit and a second power switch unit to be switched on alternately when the pre-charging capacitor is pre-charged; and enabling the energy storage module to be in an alternate energy storage and release process until the voltage of the pre-charging capacitor reaches a preset voltage value. According to the technical scheme, only devices in an existing circuit need to be used, a pre-charging circuit does not need to be additionally arranged, the energy storage module serves as an energy balance medium, the inductance characteristic of the energy storage module is utilized, so that the pre-charging current is gradually increased from 0, the pre-charging peak problem is avoided, no resistive element exists in the technical scheme, and the cost is low. Inductors and capacitors in the circuit are energy storage elements and are used for energy transfer, energy is not consumed, and pre-charging energy loss is avoided.
本申请提供一种车辆、预充电路及其预充方法，预充电路包括电池包、桥臂单元、储能模块、主正继电器、主负继电器、预充电容以及控制模块，控制模块被配置为：当对预充电容进行预充时，控制第一功率开关单元和第二功率开关单元交替导通，使储能模块处于交替储能和释能过程中，直至预充电容的电压达到预设电压值。本申请技术方案仅需要使用现有电路中的器件，无需额外增加预充电路，将储能模块作为能量均衡的中介，通过利用储能模块的电感特性，使得预充电流从0开始逐渐增大，避免了预充尖峰问题，并且本技术方案中无阻性元件，电路中的电感电容均为储能元件，用于进行能量转移，不会消耗能量，避免了预充能量损耗。
Dokumentinformationen
Vehicle, pre-charging circuit and pre-charging method thereof
车辆、预充电路及其预充方法
2023-03-28
Patent
Elektronische Ressource
Chinesisch
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