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Device, system and method for protection of battery set

A technology for battery packs and protection circuits, applied in the direction of safety/protection battery circuits, battery pack components, safety/protection circuits, etc.

Active Publication Date: 2013-01-16
AOTU ELECTRONICS WUHAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The resulting high voltage can cause malfunction or failure of measuring equipment (e.g. battery voltage measuring equipment)
Typically, this open circuit condition causes the management system in the battery pack to lose communication with the entire battery pack, or at least a portion of the cells in the battery pack, shutting down the battery pack so that the battery pack cannot power loads such as electric vehicle systems
Such electric vehicle systems may fail when starting or running

Method used

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  • Device, system and method for protection of battery set
  • Device, system and method for protection of battery set
  • Device, system and method for protection of battery set

Examples

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Embodiment Construction

[0020] The present invention will be fully described hereinafter with reference to the accompanying drawings. The present invention may be implemented in some different ways, but it should not be understood that the present invention is limited to a certain specific structure and function described in the specification. Rather, it should be understood that the description provided in the specification can completely and fully convey the scope covered by the present invention to those skilled in the art. Based on the description of the specification, those skilled in the art should understand that the scope of the present invention is intended to cover all embodiments of the present invention disclosed herein, implemented alone or in combination with other embodiments of the present invention. For example, implement an apparatus or perform a method using any number of the embodiments presented herein. In addition, the scope of the present invention also includes such an appara...

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PUM

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Abstract

A circuit includes multiple battery modules and protection circuits respectively coupled to the battery modules. Each protection circuit includes a controller and a shunt circuit. The controller is coupled to one of the battery modules and detects a fault associated with the battery module. The shunt circuit is coupled to the battery module and the controller, and shunts a current around the battery module if the fault associated with the battery module is detected by the controller.

Description

technical field [0001] The invention relates to a circuit protection technology, in particular to a battery pack protection technology. Background technique [0002] Power equipment such as power tools and electric vehicles are usually powered by battery packs. Battery packs containing multiple cells may experience open circuit problems (for example, between cells or between battery modules). If the battery pack continues to operate after an open circuit occurs, the location of the open circuit will withstand the full voltage of the battery pack. The resulting high voltages can cause malfunction or failure of measuring equipment (for example, battery voltage measuring equipment). Typically, this open circuit condition causes the management system in the battery pack to lose communication with the entire battery pack or at least a portion of the cells in the battery pack, shutting down the battery pack so that the battery pack cannot supply power to loads such as electric ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H02H7/18H01M50/574
CPCY02E60/12Y02T10/7055H02J7/0026H01M10/42H01M2/34H01M10/48H02H9/041H02J7/0013Y02T10/70Y02E60/10H02J7/0029H01M50/574H02J7/0016
Inventor 比尔·丹森
Owner AOTU ELECTRONICS WUHAN