Battery management system

A battery management system and battery unit technology, applied in battery circuit devices, multiple synchronous battery arrangements, current collectors, etc., can solve the problems of battery unit over-discharge, high manufacturing cost, and complex line structure, so as to avoid erection, The effect of reducing complexity and design manufacturing cost

Inactive Publication Date: 2012-04-25
SUZHOU GOLDEN CROWN NEW ENERGY +1
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  • Abstract
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Problems solved by technology

Therefore, when using a battery pack of battery cells connected in series, there will be such a problem: when charging, even if some battery cells are overcharged in the same battery pack, there are still some battery cells that have not yet reached saturation; , in the same battery pack, some battery cells have not been fully discharged, but some battery cells are still over-discharged
[0006] However, the current battery management system that uses active power balance has a relatively complex circuit structure and high manufacturing costs.

Method used

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Embodiment Construction

[0036] The present invention will be described in detail below in conjunction with various embodiments shown in the drawings. However, these embodiments do not limit the present invention, and any structural, method, or functional changes made by those skilled in the art according to these embodiments are included in the protection scope of the present invention.

[0037] In some specific embodiments of the present invention, the battery pack includes several battery cells connected in series. In other embodiments, several battery cells can be divided into several battery modules, and the number of battery cells contained in different battery modules can be the same. It can also be different.

[0038] figure 1 Shown is a first embodiment of a battery management system according to the invention. The battery management system includes several battery units 52 connected in series, a voltage detection module 30 , an active balancing module 20 , a controller 10 , and a pair of s...

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Abstract

The invention relates to a battery management system. The battery management system comprises a plurality of battery units which are mutually connected in series, a voltage detection module, an active balance module, a controller and signal buses, wherein the controller is electrically connected with the voltage detection module and the active balance module; and the signal buses are optionally electrically connected with the anode and the cathode of one of the plurality of battery units. The controller can be used for controlling the voltage detection module and the active balance module to detect the voltage of the battery units or charge the battery units through the same signal buses, so that the erection of excessive lines is prevented, and the complexity and production cost of a line framework are lowered.

Description

technical field [0001] The invention belongs to the field of batteries, and in particular relates to a battery management system. Background technique [0002] The battery management system is usually responsible for the calculation of battery power in the battery pack, battery protection, power balance control between batteries, and signal communication inside and outside the battery management system. In the prior art, products that generally use batteries need to be controlled with a battery management system. [0003] Because it is difficult to ensure complete uniformity in the battery manufacturing process, there will be differences in charging or discharging characteristics between battery cells connected in series. Therefore, when using a battery pack of battery cells connected in series, there will be such a problem: when charging, even if some battery cells are overcharged in the same battery pack, there are still some battery cells that have not yet reached satura...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
CPCH02J7/00H02J7/0021H02J7/0018H02J7/0014H02J7/0048
Inventor 黄仁治刘志坚
Owner SUZHOU GOLDEN CROWN NEW ENERGY
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