The invention discloses a high-voltage power distribution system of an electric forklift, and relates to the field of power distribution, a battery interface, a main positive relay, a main negative relay, a pre-charging relay and a pre-charging resistor are arranged in the high-voltage power distribution system of the electric forklift, and on-off of the main positive relay, the main negative relay and the pre-charging relay is uniformly controlled by a VCU. Namely, the power supply process of the OBC or DCDC module to the battery box is controlled by the VCU. According to the scheme, the main positive relay and the main negative relay in the battery box body are independent, the size of the battery box is reduced, the space utilization rate of the power battery system is further increased, and when the main positive relay and the main negative relay break down, a cover plate of the battery box body does not need to be disassembled, so that the sealing protection performance of the power battery system is improved. In addition, according to the scheme, the pre-charging relay and the pre-charging resistor are arranged, the capacitive load is pre-charged at the initial stage of high-voltage power-on, and the phenomenon of relay adhesion caused by overlarge current is avoided.
本发明公开了一种电动叉车高压配电系统,涉及配电领域,电动叉车高压配电系统内设置有电池接口、主正继电器、主负继电器、预充继电器及预充电阻,其中,主正继电器、主负继电器及预充继电器的开断由VCU统一控制,即OBC或DCDC模块向电池箱的供电过程由VCU控制。本方案将电池箱体内的主正继电器和主负继电器独立出来,减小了电池箱的体积,进而增大了动力电池系统的空间利用率,并且当主正继电器和主负继电器出现故障时,无需拆装电池箱体的盖板,提高了动力电池系统的密封防护性。此外,本方案通过设置预充继电器和预充电阻,在高压上电初期为容性负载预先充能,避免因电流过大导致继电器黏连现象的发生。
High-voltage power distribution system of electric forklift
一种电动叉车高压配电系统
2025-01-10
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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