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Cell equalization apparatus possessing heating function

A technology of battery equalization and heating resistors, which is applied to battery circuit devices, circuit devices, charge equalization circuits, etc., can solve the problems of low charging efficiency of the battery system and affect the service life of the battery system, and achieve high power, small temperature rise, and balanced high efficiency effect

Inactive Publication Date: 2016-12-21
辽宁比科新能源股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At low temperature, the charging efficiency of the battery system is low and affects the service life of the battery system

Method used

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  • Cell equalization apparatus possessing heating function
  • Cell equalization apparatus possessing heating function
  • Cell equalization apparatus possessing heating function

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Embodiment Construction

[0019] The present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0020] The present invention will be described in detail below by taking a battery pack composed of 5 battery modules as an example.

[0021] like figure 1 The battery balancing device with heating function shown includes 5 independent battery module balancing circuits corresponding to 5 battery modules (B1, B2, B3, B4, B5), and one balancing circuit is connected in series in each battery module balancing circuit. Control switches (Q1, Q2, Q3, Q4, Q5) and a balance resistor (R1, R2, R3, R4, R5), the balance control switch is a MOSFET switch tube, and the gate G of the MOSFET switch tube is connected to the battery system thermal management control circuit.

[0022] like figure 2 A...

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Abstract

The invention discloses a cell equalization apparatus possessing a heating function. The cell equalization apparatus possessing the heating function comprises a plurality of independent cell module equalization circuits corresponding to a cell module. Each cell module equalization circuit comprises an equalization control switch and an equalization resistor which are connected in series. The equalization resistor is a thin-sheet-type large power heating resistor which can be used to heat a cell. The thin-sheet-type large power heating resistor is formed by an insulation heat conduction thin sheet and a heating wire arranged in the insulation heat conduction thin sheet. The thin-sheet-type large power heating resistor is fixed to a cell module sidewall or a bottom surface and is tightly and uniformly contacted with a monomer cell shell used for forming the cell module. The cell equalization apparatus possessing the heating function can be served as a heating unit of cell system heat management under a low temperature environment and also can be served as the equalization resistor under a normal temperature environment. Equalization resistor power in the equalization apparatus is large, equalization efficiency is high and a temperature rise of the equalization resistor during equalization is small.

Description

technical field [0001] The invention relates to a battery energy balancing technology, in particular to a battery balancing device, which belongs to the technical field of battery management. Background technique [0002] During the use of the battery pack, maintaining the voltage consistency of each single battery in the battery pack is one of the key technologies of the battery management system. The consistency of the battery voltage can improve the effective energy of the battery system, prolong the service life of the battery system, and better ensure the safety of the battery system. At present, most of the battery equalization technology is realized by power resistor bypass. When the voltage of a certain battery is high, the equalization circuit of the battery is started, and the bypass resistor connected between the positive and negative poles of the battery is connected through the switch tube. The discharge of the circuit resistance reduces the voltage of the batt...

Claims

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Application Information

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IPC IPC(8): H02J7/00H01M10/615H01M10/6571
CPCH01M10/615H01M10/6571H02J7/0016Y02E60/10
Inventor 王宏栋方振华王宏忠李飞兰海侠朱彬
Owner 辽宁比科新能源股份有限公司
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