Check the three electrical systems检查三电系统

Inspection procedures检查程序

1. Check the three electrical systems1. 检查三电系统 1 Disconnect the negative terminal of the 12V battery and power off the entire vehicle.断开蓄电池负极，整车下电。 2 Check the appearance of the high-voltage connector and low-voltage connector and whether the installation is reliable. Check whether the surface of the connector is damaged and whether the installation is in place.检查高压接插件、低压接插件外观，以及安装是否可靠，检查接插件表面是否有损坏，以及安装是否到位。 3 Check the reliability of the integrated electric drive assembly (check whether the connection of the high-voltage harness is reliable, check whether the fixing bracket is loose, and read the fault code).检查集成电力驱动总成的可靠情况(检查高压线束的连接是否可靠，检查固定支架是否松动，读取故障代码)。 4 Check the reliability of the high-voltage battery (check whether the high-voltage harness connection connected to the battery box is reliable, use special tools to detect the working status of the battery core, and read the fault code).检查动力电池的可靠情况(检查与电池箱相连接的高压线束连接是否可靠，用专用工具检测电芯工作状态，读取故障代码)。 5 Check the reliability of the integrated power system (check whether the high-voltage and low-voltage connector connections are intact, check whether the positive and negative 12V battery harness connections are reliable, check whether the mounting nuts are tight, and read the fault code).检查集成电源系统的可靠情况(检查高压和低压接插件连接是否完好，检查蓄电池正负极线束连接是否可靠，检查安装螺母是否紧固，读取故障代码)。 6 Check the high-voltage wire harness in special parts (whether the high-voltage wire harness and the high-voltage wire harness guard plate under the chassis are damaged, whether the connection part with the motor is reliable and intact, whether the fast and AC charging high-voltage wire harness connections are reliable and intact).检查特殊部位的高压线束(底盘下的高压线束及高压线束护板是否有损坏，与电机连接部位是否可靠、完好，快、慢充电高压线束连接是否可靠、完好)。 7 Check whether the components, fasteners, wiring harnesses, and pipelines of the integrated electric drive assembly are reliable and effective, and whether there is any interference. Check whether there is oil leakage, water leakage, etc. at the bottom of the integrated electric drive assembly.检查集成电力驱动总成各部件、紧固件、各线束、管路固定是否可靠有效，是否存在干涉现象，检查集成电力驱动总成底部是否有漏油、漏水等现象。 8 Check that the insulation resistance between the conductors of the high-voltage connection system, between the conductors and the shell, and between the conductors and the shielding layer should not be less than 100MΩ.检查高压连接系统导体与导体之间、导体与外壳之间、导体与屏蔽层之间的绝缘电阻应不小于100MΩ。

9 Check whether the explosion-proof breather valve A of the battery pack assembly has fallen off or is damaged.检查电池组箱总成防爆透气阀A是否脱落或损坏。