动力电池组的安全保护装置

Safety protection device of power battery pack

Abstract

本实用新型公开一种动力电池组的安全保护装置,包括电池管理单元BMU、级连节裂继电器;子电池组电压小于36V;子电池组串联,子电池组间连接有级连节裂继电器;电池管理单元BMU与级连节裂继电器电连接;电池组正常工作动力输出时,电池管理单元BMU控制闭合节裂继电器触点;当任何意外或停车以后,电池管理单元BMU控制断开级连节裂继电器触点;整个动力电池变成若干个小于36V安全电压互不相关子电池组。优点是改变以往仅使用一个主接触器来控制电池组高压输出,而是把一个大的电池组分解成几个子电池组,子电池组输出电压在安全范围,级连节裂安全控制,可在动力电池组的各种工况下提供安全保护,防止动力电池组高压电泄漏导致人身安全事故。
The utility model discloses a safety protection device of a power battery pack, which comprises a BMU (battery management unit), and concatenated strobilization relays. In the utility model, sub battery packs with voltage of less than 36V are connected in series, and the concatenated strobilization relays are connected between the sub battery packs; the BMU is electrically connected with the concatenated strobilization relays; when the battery pack normally outputs power, the BMU controls and closes contacts of the strobilization relays; when any accident or parking occurs, the BMU controls and opens the contacts of the concatenated strobilization relays; and the whole power battery is divided into a plurality of independent sub battery packs with voltage less than 36V. The safety protection device has the advantages that the situation that only one main contactor is formerly used to control the high-voltage output of the battery pack is changed, a large battery pack is divided into a plurality of sub battery packs, moreover, the output voltage of the sub battery packs is in safe range, so the concatenated strobilization is safely controlled, the safety protection is provided under various working conditions of the power battery pack, and the personnel safety accident due to high-voltage electricity leakage of the power battery pack is avoided .

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Cited By (3)

    Publication numberPublication dateAssigneeTitle
    CN-102005735-AApril 06, 2011富奥汽车零部件股份有限公司Safety protection device for power battery pack
    CN-102005735-BJuly 17, 2013富奥汽车零部件股份有限公司动力电池组的安全保护装置
    CN-102545345-AJuly 04, 2012安徽安凯汽车股份有限公司Battery over charge or over discharge protection system for electric automobile