Balanced management system applied to battery module and control method thereof
A battery module and balanced management technology, applied in battery circuit devices, current collectors, electric vehicles, etc., can solve the problems of occupying the number of battery charge and discharge cycles, reducing battery service life, etc., to avoid the effect of total voltage drop
Pending Publication Date: 2022-04-12
HANGZHOU BMSER TECH
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Problems solved by technology
[0004] In view of this, the purpose of the present invention is to provide a balance management system and its control method applied to battery modules, which solves the problem of occupying the number of battery charge and discharge cycles during battery balance management, without reducing the service life of the battery
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[0023] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention is not limited to these embodiments. The present invention covers any alternatives, modifications, equivalent methods and schemes made within the spirit and scope of the present invention.
[0024] In order to provide the public with a thorough understanding of the present invention, specific details are set forth in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details.
[0025] In the following paragraphs the invention is described more specifically by way of example with reference to the accompanying drawings. It should be noted that all the drawings are in simplified form and use inaccurate scales, which are only used to facilitate and clearly assist the purpose of illustrating the embodiments of t...
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The invention provides an equalization management system applied to a battery module and a control method thereof, the equalization management system comprises a main controller and a data acquisition module, and further comprises N first switches and N second switches, the first switches and single batteries are connected in series in a one-to-one correspondence manner to form a series structure, and the first switches and the single batteries are connected in series in a one-to-one correspondence manner. The second switches and the series structures are connected in parallel in a one-to-one correspondence manner, and the N first switches and the N second switches are connected with the main controller; when the battery module is charged or discharged, the N first switches are all switched on, the N second switches are all switched off, and when the main controller detects that a single battery reaches a limit voltage, the main controller controls the first switch corresponding to the single battery to be switched off and controls the second switch corresponding to the single battery to be switched on. And withdrawing the single battery from the charging loop or the discharging loop. According to the invention, the charge-discharge cycle index of the single battery is not occupied additionally, and the purpose of lossless equalization is achieved.
Description
technical field [0001] The invention relates to the technical field of battery management, in particular to a balance management system applied to battery modules and a control method thereof. Background technique [0002] At present, the battery modules put into use in the market all have the problem of inconsistent performance of single cells. In order to improve this problem, equalization technology is generally used to improve the consistency of battery modules. The equalization technology is divided into passive equalization and active equalization. Passive equalization is to perform consistent equalization by discharging high-energy single batteries to realize capacity discharge, but cannot replenish energy for low-energy single batteries, while active equalization Equalization is the way of transferring energy between high-energy single cells and low-energy single cells, that is, the battery can be discharged or charged. [0003] But the single battery itself has a s...
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Inventor 吴传靖李志强段文星
Owner HANGZHOU BMSER TECH