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Daisy chain communication system for passive equalization circuit

A passive equalization and communication system technology, applied in charge equalization circuit, passive battery identification, circuit, etc., can solve the problem of high cost, achieve the effect of solving interference and reducing design cost

Inactive Publication Date: 2021-06-01
SHANGHAI YUYUAN POWER TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technology of active equalization is not yet mature, and the cost is relatively high. At present, passive equalization is more widely used

Method used

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  • Daisy chain communication system for passive equalization circuit
  • Daisy chain communication system for passive equalization circuit
  • Daisy chain communication system for passive equalization circuit

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Embodiment Construction

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0048] see Figure 1-5 , the present invention provides a technical solution: a daisy chain communication system for passive equalization circuits, comprising:

[0049] A detection unit module BMU, the detection unit module BMU is directly connected to the battery unit to collect the voltage, current and temperature of the battery unit;

[0050] The main control unit module BCU, the main control unit module is composed of a plurality of detection unit modules...

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Abstract

The invention discloses a daisy chain communication system for a passive equalization circuit, and the system comprises: detection unit modules BMU, which are directly connected to a battery unit and is used for collecting the voltage, current and temperature of a battery; a main control unit module BCU, which forms a daisy chain network through cascade connection of the plurality of detection unit modules BMU, manages the detection unit modules BMU in a daisy chain mode and receives battery pack data collected by the detection unit modules BMU, and meanwhile collects total voltage, current and temperature, and then processes all data, performs driving control and related management according to a control strategy, and is the core part of the battery management system. According to the invention, a daisy chain communication strategy and a passive equalization technology are combined, and the interference of a passive equalization part on a communication line is solved.

Description

technical field [0001] The invention relates to the technical field of energy storage battery management, in particular to a daisy chain communication system for passive equalization circuits. Background technique [0002] Balanced control management through BMS can not only solve the problems caused by the inconsistency caused by a large number of lithium batteries in the process of production, use and storage, prolong the service life of the battery, improve the economical use of the battery, but also prevent the battery from being over-used. Overcharge and overdischarge problems, improve the energy utilization rate of the battery pack. [0003] At present, battery pack balancing is mainly divided into two types: active balancing and passive balancing: active balancing achieves balancing through energy transfer between batteries, while passive balancing mainly uses heat-generating load elements to balance the energy consumption of excessive battery cells. The technology o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H01M10/42
CPCH02J7/00041H02J7/0016H02J7/0019H02J7/0047H01M10/425H01M2010/4271H01M2010/4278Y02E60/10
Inventor 尚德华袁玖玮
Owner SHANGHAI YUYUAN POWER TECH CO LTD