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Battery management system and detection method thereof

A technology of a battery management system and a battery management module, which is applied in the battery management system and its detection field, can solve the problems of inaccurate battery voltage and the safety risk of the whole vehicle.

Active Publication Date: 2021-10-01
CONTEMPORARY AMPEREX TECH CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The failure of the connector will lead to inaccurate cell voltage collected by the battery management system and the safety risk of the entire vehicle.

Method used

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  • Battery management system and detection method thereof
  • Battery management system and detection method thereof
  • Battery management system and detection method thereof

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Embodiment Construction

[0049]The characteristics and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only configured to explain the present invention, not to limit the present invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by showing examples of the present invention.

[0050] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and d...

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Abstract

The invention discloses a battery management system and a detection method thereof. The system includes: a controller, multiple master-slave modules connected in series, current sensors connected to the controller, multiple battery management modules connected in series, multiple external connectors and multiple internal connectors. The current of the slave module; adjacent master-slave modules are connected through external connectors, and the master and slave modules in each master-slave module are connected through internal connectors; for each battery management module, the battery management The module is used to manage the corresponding master-slave module and the external connector connected to the master-slave module. The controller is used to judge the multiple external connections based on the sampling data and current of multiple external connectors when the current is not zero. Whether there is a fault in the connector, and based on the sampling data and current of multiple cells in multiple master-slave modules, determine whether multiple internal connectors are faulty. According to the embodiment of the present invention, the fault detection of the inter-module connector is realized.

Description

technical field [0001] The invention relates to the field of new energy, in particular to a battery management system and a detection method thereof. Background technique [0002] In the battery management system, the connection mode between battery modules can be a master-slave connection mode, which is called a master-slave module. The master-slave module usually adopts the mode of one master and one slave. The master control board is located on the master module, and the slave module has no control board. The master module and the slave modules are connected through connectors and cascading wire harnesses. The battery management system may include multiple master-slave modules connected in series, and two adjacent master-slave modules are also connected through connectors and cascading harnesses. [0003] As the service time of the battery management system increases, components such as the connectors between the master module and the slave modules and the connectors be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/367G01R31/396
Inventor 王险峰宋玉锐
Owner CONTEMPORARY AMPEREX TECH CO
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