The invention discloses a control system, method and device for parallel connection of multiple battery subsystems, the control system comprises a control device, a main switch, a one-way conduction device and a slave switch which are arranged in each battery subsystem, and the slave switch and the one-way conduction device are connected in series and then are connected with the main switch in parallel. The control device is used for controlling the main switch and the slave switch corresponding to the target battery subsystem to be switched off when the target battery subsystem has a fault, and is also used for comparing the target battery voltage difference with a preset voltage difference according to the charging and discharging state and controlling the on-off of the main switch and the slave switch of the corresponding battery subsystem. Therefore, the voltage difference of the target battery is compared with the voltage difference, the voltage difference of the battery in the charging and discharging process can be actively balanced, and current circulation in the charging and discharging process of the battery is avoided. In addition, when the battery subsystem breaks down,the main switch and the slave switch are switched off, the broken-down battery can be cut off in time, the safety risk of the battery is reduced, and after-sales maintenance is facilitated.
本申请公开了一种多电池子系统并联的控制系统、方法及装置,其中控制系统包括设置于各电池子系统的控制装置、主开关、单向导通装置和从开关,其中,从开关和单向导通装置串联后与主开关并联。控制装置,用于当目标电池子系统发生故障时,控制目标电池子系统对应的主开关和从开关断开,还用于根据充放电状态,比较目标电池压差与预先设置的压差,控制对应的电池子系统的主开关和从开关的通断。由此可见,比较目标电池压差与压差,能够主动均衡电池在充放电过程中的压差,避免了在电池充放电过程中电流环流的出现。除此之外,当电池子系统出现故障时,断开主开关和从开关,能够及时切断故障电池,减少电池的安全风险,有利于售后维护。
Control system, method and device for parallel connection of multiple battery subsystems
一种多电池子系统并联的控制系统、方法及装置
2020-12-04
Patent
Electronic Resource
Chinese
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY |
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