Distributed battery management system

A battery management system and distributed technology, applied in the direction of batteries, secondary batteries, battery circuit devices, etc., can solve problems affecting the reliability of power supply and communication of the battery management system, so as to improve the reliability of communication and power supply and ensure stability performance, reducing complexity

CN107732985BActive Publication Date: 2019-11-29JIANGSU CONTEMPORARY AMPEREX TECHNOLOGY LIMITED
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2019-11-29

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Abstract

The invention discloses a distributed battery management system, which includes a main control module and at least one slave control module, each slave control module manages a group of battery packs in series, the battery packs are connected in series in the power circuit, the main control module, each slave control module The control modules are respectively connected to the power circuits, and the master control module can communicate with the slave control modules through two power circuits in opposite directions. Compared with the prior art, the present invention realizes the communication of the distributed battery management system through the power circuit without the traditional low-voltage communication and power supply wiring harness, reduces the complexity of wiring, and uses the communication signal to accurately communicate the power circuit. The broken state monitoring and broken point location significantly improve the communication and power supply reliability of the battery management system.
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Description

technical field

[0001] The invention belongs to the field of power batteries, and more specifically, the invention relates to a distributed battery management system. Background technique

[0002] Since the implementation of the national new energy promotion policy, the pure electric commercial vehicle market has continued to develop. The battery management system is one of the key technologies related to the practicality and commercialization of electric vehicles. It is of great significance to research, develop and industrialize battery management technology and systems.

[0003] At present, the battery system of a high-power pure electric bus consists of more than ten battery boxes, and each battery box is equipped with a slave control module of the battery management system. The slave control modules need intricate low-voltage power supply and communication harness connections. If the battery system consists of N battery boxes, the number of low-voltage connection harne...

Examples

Embodiment Construction

[0023] In order to make the object, technical solution and technical effect of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific implementations described in this specification are only for explaining the present invention, not for limiting the present invention.

[0024] The distributed battery management system of the present invention includes a main control module and at least one slave control module. Each slave control module manages a group of battery packs in series. The battery packs are connected in series in the power circuit. Connected, the master control module can communicate with the slave control module through two power loops in opposite directions.

[0025] The following is an embodiment of the application of the distributed battery management system of the present invention to the battery system of a p...