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Online balancing system for battery packs and batteries

A technology of balancing system and battery pack, applied in charge balancing circuit, battery circuit device, arrangement of multiple synchronous batteries, etc., can solve problems such as low balancing efficiency, improve balancing efficiency, facilitate debugging and maintenance, and avoid energy resistance. The effect of sexual consumption

Active Publication Date: 2018-03-06
XJ POWER CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a battery pack online equalization system and battery, which is used to solve the problem of low equalization efficiency among battery cells in the battery pack in the prior art

Method used

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  • Online balancing system for battery packs and batteries
  • Online balancing system for battery packs and batteries
  • Online balancing system for battery packs and batteries

Examples

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Embodiment Construction

[0040] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0041] A battery pack online balance control system, such as figure 1 with figure 2 As shown, it includes a main control unit BCU, an execution unit BEU and a charging circuit and / or a discharging circuit corresponding to each battery module in the battery pack. module, the charging circuit corresponding to each battery module and / or a switching tube is arranged in series in the charging circuit, and the execution unit controls and connects each switching tube. Wherein, the charging circuit includes a charger and a switching tube, and the discharging circuit includes a load and a switching tube, and the charging circuit and the discharging circuit corresponding to each battery module share a switching tube; as other implementation modes, the charging circuit and the discharging circuit do not share a switching tube, For example, the charging ci...

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Abstract

The invention provides an online balancing system for battery packs and batteries. The online balancing system comprises a main control unit, execution units and charge circuits and / or discharge circuits corresponding to various battery modules in the battery packs, wherein the main control unit is in communication connection with the execution units; the execution units are used for sampling andconnecting the battery modules; switch tubes are arranged in the charge circuits and / or discharge circuits corresponding to the battery modules in series; the execution units are connected with various switch tubes; and charge and discharge time of corresponding single batteries is controlled through controlling the turn-on time of the switch tubes, thereby preventing the single batteries from being overcharged or over-discharged. The switch tubes are introduced into the charge circuits and / or discharge circuits of the single batteries, so that the online balancing system is flexible in configuration and convenient to debug and maintain; energy resistance consumption is avoided by combining on / off of the switch tubes and a DC / DC converter compensation mechanism; the balancing efficiency ofthe single batteries is greatly improved; safe and reliable operation of the whole group of batteries is ensured; and the online balancing system is of great significance in improving the performanceof the battery packs, prolonging the service life of the battery packs and improving the energy utilization rate.

Description

technical field [0001] The invention belongs to the technical field of electric vehicles, new energy power batteries and energy storage batteries, and in particular relates to an online balancing system for battery packs and batteries. Background technique [0002] At present, with the rapid development of electric vehicles and new energy storage, battery technology has been widely used and developed rapidly. In actual use, the form of a battery pack is often used, but due to the inevitable slight performance differences due to the environment, production machines, etc. during the production of the battery, each battery in the battery pack may appear When the voltage value of each battery is different, the voltage of these batteries will gradually increase after repeated use. If equalization is not performed in time, these increasing inconsistencies will lead to the premature exhaustion of the life of the battery pack. [0003] During the specific storage and use of the bat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
CPCH02J7/0019
Inventor 刘兵强乔海强刘建鹏张跃杰裴国强李沛边慧萍吕孟帅刘秀华
Owner XJ POWER CO LTD
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