A circuit for solving mutual charging and discharging problems among multiple battery packs

Abstract

The invention discloses a circuit for solving mutual charging and discharging problems among a plurality of battery modules. The circuit comprises a plurality of parallel battery modules; the battery modules input and output by adopting a positive line and a negative line; each battery module comprises a battery, a charging MOS (Metal Oxide Semiconductor) tube, a discharging MOS tube, a current detection module, a temperature sampling circuit, a temperature control switch module and a control module; the voltage sampling input end of the control module is connected with the battery; the current sampling input end of the control module is connected with the current detection module; the control output end of a first MOS tube of the control module is connected with the charging MOS tube; and the control output end of a second MOS tube of the control module is connected with the discharging MOS tube. According to the invention, the mutual charging and discharging problems due to the fact that the plurality of battery modules of different voltage grades are mutually connected in parallel by controlling the charging MOS tube and the discharging MOS tube can be solved; furthermore, the fact that all the battery modules are in a parallel bus loop is realized; and the full-cycle charging and discharging process of each battery module is realized.

Description

technical field [0001] The invention relates to a circuit for solving the mutual charging and discharging problem among multiple battery packs. Background technique [0002] With the vigorous development of electronic technology, the use of medium and large battery packs is increasing. During the production, testing and use of these battery packs, many charging and discharging processes are used. [0003] The existing charging equipment or discharging equipment has the following disadvantages: [0004] 1. The battery packs need to use the same type of battery modules for parallel use, that is, the parallel battery packs require the same voltage for each battery, and it is not possible to parallel input and output battery modules of completely different types and voltage levels. Because in the battery pack, the difference between the monomers always exists. Take the capacity as an example, the difference will never disappear, but will gradually deteriorate. The same curren...

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a circuit that is simple, easy to operate, and highly reliable to solve the problem of mutual charge and discharge between multiple battery packs, and to solve the problem that the prior art cannot realize full cycle charge and discharge The problem

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