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Automatic capacity expansion and balance battery management system for lithium battery

A battery management system, lithium battery technology, applied in secondary batteries, secondary battery repair/maintenance, circuits, etc., can solve the problems that the battery management system cannot cool down, can not directly remind personnel, etc., to reduce the risk of burning, convenient The effect of working quickly

Pending Publication Date: 2019-07-23
JIANGSU TIANHE ENERGY STORAGE CO LTD
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problem that the existing battery management system cannot cool down when the temperature is too high. When a circuit short circuit occurs, the fault can only be found through the detection and feedback of the main control system, and the personnel cannot be directly reminded. An automatic expansion and equalization battery management system for lithium batteries

Method used

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  • Automatic capacity expansion and balance battery management system for lithium battery
  • Automatic capacity expansion and balance battery management system for lithium battery

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Embodiment Construction

[0018] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Axial", "Radial", "Circumferential", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention.

[0019] Such as figure 1 As shown, a battery management system with automatic capacity expansion and balancing for lithium batteries includes a main control system 1 and several battery packs 2, several of the battery pa...

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Abstract

The invention provides an automatic capacity expansion and balance battery management system for a lithium battery. The system comprises a master control system and a plurality of battery packs, wherein the plurality of battery packs are connected in series; a slave control unit is arranged in each battery pack, and the slave control units are in communication connection with the master control system; power resistors connected with the batteries in series are arranged in the plurality of battery packs; the plurality of slave control units are provided with a single voltage acquisition line connected with the battery packs to monitor the electric quantity of the batteries and a temperature acquisition line for monitoring the temperature of the battery packs; a resistor temperature detection circuit is arranged on a circuit between the plurality of slave control units and the power resistors, and the resistor temperature detection circuit is used for monitoring the temperature of the power resistors; fans are further arranged in the plurality of battery packs, and the plurality of fans are controlled by the slave control units; and the master control system is provided with buzzingalarm circuits, and the buzzer alarm circuits are used for monitoring the temperature extreme values of the battery packs, and can be used for carrying out controlling and early warning on the heat generated by the battery packs and the power resistors while the battery management system is balanced.

Description

technical field [0001] The invention belongs to the technical field of battery energy storage systems for electric vehicles, and in particular relates to an automatic expansion and equalization battery management system for lithium batteries. Background technique [0002] In order to meet the needs of society and the environment, electric vehicles are gradually replacing automobiles, because electric vehicles not only have no emission and zero pollution when used, but also have fast power improvement and low power consumption when used, which has become another popular feature of electric vehicles. Factors, in order to achieve battery storage in existing electric vehicles, high-voltage electric shock systems are usually used. Existing car batteries use high-voltage battery systems, which are composed of more than two battery packs connected in series, and the battery pack is realized through power resistors. The balance of power is to protect the service life of the battery,...

Claims

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Application Information

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IPC IPC(8): H01M10/42H01M10/48H01M10/613H01M10/615H01M10/625H01M10/6553H01M10/635
CPCH01M10/425H01M10/486H01M10/613H01M10/615H01M10/625H01M10/635H01M10/6553H01M2010/4271H01M2010/4278Y02E60/10
Inventor 何天林兰天
Owner JIANGSU TIANHE ENERGY STORAGE CO LTD
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