Cascaded utilization battery group protection system and battery group composition method
A technology for protecting systems and battery packs, applied in battery overcharge protection, battery overvoltage protection, battery overdischarge protection, etc. The effect of simplifying protection circuit layout, optimizing protection circuit layout, and improving reliability
Active Publication Date: 2021-09-17
湖南赢科储能科技有限公司
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- Summary
- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
In the traditional technology, the protection circuit for the cascade utilization of the battery pack is relatively complicated, and there are many collection points and lines, which will cause electrical interference to the battery pack system to a certain extent and the cost is high
Method used
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[0045] 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.
[0046] The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.
[0047] Hereinafter, the terms "comprising",...
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The embodiment of the present invention discloses a cascade utilization battery matching protection system and battery group composition method. The discharge monitoring terminal of the battery protection chip is connected to the first terminal of the discharge control switch, and the charging monitoring terminal of the battery protection chip is connected to the charging control switch. The first end; the second end of the discharge control switch and the charge control switch are used to connect to one electrode of the battery pack used in cascade respectively; the third end of the discharge control switch and the charge control switch is used to connect to external equipment; the battery protection chip , used to connect to the positive and negative poles of the corresponding monitored single-cell battery in the battery pack; the battery protection chip is also used to detect that the discharge voltage of the monitored single-cell battery is less than or equal to the preset discharge voltage, then Turning off the discharge control switch; and / or, also used to turn off the charge control switch when it is detected that the charging voltage of the monitored single battery is greater than or equal to the preset charging voltage. The invention can reduce the cost of the protection system.
Description
technical field [0001] The invention relates to the technical field of cascaded utilization batteries, in particular to a group protection system for cascaded utilization batteries and a battery group composition method. Background technique [0002] With the vigorous development of the new energy vehicle industry, more and more power batteries are being replaced and retired. The remaining capacity of these retired batteries is mostly 60%-70% of the initial capacity, and some are close to 80%. It is obviously a waste to disassemble these batteries directly. For decommissioned batteries, "dismantling and recycling" and "echelon utilization" are two complementary methods widely recognized in the industry. It is very necessary and meaningful to do a good job in cascade utilization, no matter from the perspective of economy, resource safety, or environmental protection. Usually, the average service life of a power battery is 5-8 years, and its performance decays with the incre...
Claims
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IPC IPC(8): H02J7/00H01M10/42
CPCH01M10/4257H01M2010/4271H02J7/00302H02J7/00306H02J7/00308Y02E60/10
Inventor 禹朝辉熊志江姚银壮
Owner 湖南赢科储能科技有限公司