The invention discloses a relay control sequence method for failure of a power battery system of a new energy automobile. A battery cell, a fuse MSD, a main positive relay and a main negative relay form a high-voltage loop are included; the two ends of the main positive relay are in bridge connection with a pre-charging relay and a pre-charging resistor. The positive electrode of the pre-chargingrelay is connected with the positive electrode of the main positive relay. The negative electrode of the pre-charging resistor is communicated with the negative electrode of the main positive relay; the BAT+ of the battery cell is connected with the positive electrode of the main positive relay and the positive electrode of the pre-charging relay, the BAT- of the battery cell is connected with a current acquisition device, one end of the current acquisition device is connected with the positive electrode of the main negative relay, and the main positive relay, the main negative relay and the pre-charging relay are connected with a battery management system (BMS). The relay control sequence method has the characteristic of preventing adhesion accidents caused by on-load cutoff of a relay when the power battery system fails.
本发明公开了一种新能源汽车动力电池系统故障时继电器的控制顺序方法,包括形成高压回路的电芯、熔断器MSD、主正继电器和主负继电器,所述主正继电器两端跨接有预计充继电器和预充电阻,所述预计充继电器的正极接通于主正继电器的正极,所述预充电阻的负极连通于主正继电器的负极,所述电芯的BAT+接通于主正继电器的正极和预计充继电器的正极,所述所述电芯的BAT‑接通有电流采集装置,所述电流采集装置一端接通于主负继电器正极,所述主正继电器、主负继电器、预计充继电器接通于电池管理系统BMS。一种新能源汽车动力电池系统故障时继电器的控制顺序方法,具有防止动力电池故障时继电器带载切断造成粘连事故的特点。
Relay control sequence method for failure of power battery system of new energy automobile
一种新能源汽车动力电池系统故障时继电器的控制顺序方法
2020-08-18
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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