Battery and load balance management system
A technology of balanced management and battery balance, applied in secondary batteries, load supply circuits, battery circuit devices, etc., can solve the problems of complex power supply system, unfavorable system reliability, and inability to allocate energy to each other, so as to reduce usage and battery The number of groups, the effect of reducing the need for DC voltage conversion
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[0026] 传统方案中,电池管理系统(Battery Management System,BMS)和负载之间为相对独立的关系,相对单一电池组而言,所有负载都需要从所有串联的电池中获取等量的电能。对于一个健康的电池组而言,各个电池单元(或并联单元)为负载提供的能量在任何时候都应该保持一致。对于电池组的负载而言,电池组以一个独立的整体而存在。
[0027] 理想电池组每串电池容量都应该相同,但现实中却难以实现。电池组的容量受限于电池组中最低容量的电池串,容量不一致造成电池容量的利用率降低,容量大的电池串不能得以充分的利用。因为负载只与整个电池组的正极和负极相连,电池组内部各个电池串之间的电量非均衡状态归咎于各个电池串本身的差异,这种非均衡状态在充放电过程中不但会降低电池容量的利用率,还会加速容量低的电池串的衰减速度,从而更快地缩短整个电池组的使用寿命。
[0028] 本发明旨在改变传统电池管理系统及负载之间相对孤立的关系,将二者有机地结合在一起。通过电池串之间的主动均衡和管理系统维护电池组的安全,最大限度地延长电池的使用寿命。这种结合可以根据电池容量与负载的特点,使电池系统和负载系统从总体上获得合理的匹配,将二者有机地结合在一起并合理地进行统一管理。
[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making c...
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