Protecting system capable of overcoming current-carrying hazard of battery parallel circuit with low cost
A technology of protection system and battery management system, which is applied in the field of protection system to solve the hidden danger of current carrying on the battery parallel circuit at low cost, to achieve the effect of solving the current out of control, reducing the application cost and avoiding safety hazards
Inactive Publication Date: 2018-08-07
孙庆
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[0003] The purpose of the present invention is to provide a low-cost protection system that solves the hidden danger of current-carrying on the battery parallel circuit, so as to solve the problems raised in the above-mentioned background technology
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[0015] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0016] See Figure 1-4 , A low-cost protection system that solves the hidden danger of current-carrying on battery parallel circuits. The protection system consists of a power battery pack, a temperature control system and a battery management system. The power battery pack consists of M*N standard single battery modules, and N single The battery modules are connected in parallel, and each single battery module is connected by a wire. It...
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The invention discloses a protecting system capable of overcoming current-carrying hazard of a battery parallel circuit with low cost. The protecting system comprises a power battery pack, a temperature control system and a battery management system; the power battery pack consists of M*N standard single battery modules, and N single battery modules are in parallel connection and connected throughconductor wires. Installation of BMS on each branch circuit and utilization of high-carrying-capacity parallel connectors are both avoided, over-current risk can be eliminated by use of one BMS onlyand low-carrying-capacity parallel connectors, and thus cost is lowered greatly. Besides, connection status of serial mechanical connecting points can be detected so that safety hazard caused by loosening of the serial mechanical connecting points can be avoided; meanwhile, temperature variation of parallel branches can be monitored so that the problem of out of control of current of the parallelbranches, possibly caused among parallel modules, can be solved.
Description
Technical field [0001] The invention relates to the technical field of lithium battery protection, in particular to a low-cost protection system for solving the hidden danger of current-carrying on battery parallel circuits. Background technique [0002] Lithium power battery packs used in electric vehicles or energy storage systems on the market generally consist of many individual modules, and the capacity of each module is designed according to the capacity required by the actual application system. Due to the capacity required by electric vehicles or energy storage systems Generally above 100AH, the required capacity of a single module is relatively large. Considering the weight of a single module, the number of series in each module is small, generally 1 to 2 strings, no more than 3 strings at most, and the voltage of a single module low. This single module has the following shortcomings: 1. Poor versatility: a single module has a large capacity and non-standard customizati...
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IPC IPC(8): H01M10/42H01M10/48
CPCH01M10/4207H01M10/4257H01M10/486Y02E60/10
Inventor 孙庆
Owner 孙庆