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A series battery pack equalization circuit and equalization method

A technology of series-connected battery packs and balancing circuits, applied in charge balancing circuits, battery circuit devices, secondary battery charging/discharging, etc., can solve the problems of high charger requirements and large heat generation, achieve high conversion efficiency and reduce costs Effect

Active Publication Date: 2017-12-19
EDAN INSTR
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide an equalization circuit and equalization method for a battery pack in series, aiming at solving the problems of large heat generation and high requirements for chargers in the battery equalization circuit in the prior art

Method used

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  • A series battery pack equalization circuit and equalization method
  • A series battery pack equalization circuit and equalization method
  • A series battery pack equalization circuit and equalization method

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Embodiment Construction

[0044] In order to make the object, technical solution and advantages of the present invention clearer, 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 used to explain the present invention, not to limit the present invention.

[0045] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.

[0046] The present invention is a series battery pack equalization system, such as image 3 As shown, a balancing circuit of a battery pack in series 101 , the balancing circuit of a battery pack in series includes a switch module 102 , a microcontroller 105 , a charging circuit 103 and a DC converter 104 .

[0047] The first voltage input end and the second voltage input end of the DC converter 104 are connected to the positive pole and the negative pole of the series ...

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Abstract

The invention relates to the technical field of balancing of batteries, and provides a balancing circuit and method of a series battery pack. The balancing circuit of the series battery pack comprises a switch module, a microcontroller, a charging circuit and a DC converter; the microcontroller controls the switch module to be connected to acquire the voltage value of each single battery in the series battery pack, calculate the difference between the maximum voltage value and the minimum voltage value and determine whether the difference exceeds the preset value; if the difference exceeds the preset value, the switch module is controlled to be connected to gradually charge the single battery of which the voltage value is less than the average voltage value through the charging circuit, and the switch module is driven to be connected to acquire the voltage value of each single battery in the series battery pack after charging until the voltage values of all single batteries reach the average voltage value. According to the technical scheme, the balancing circuit and method have the advantages that the balancing can be performed during charging, discharging and dynamical operation; the battery can be balanced with relatively small power, and meanwhile, the cost of a power device can be decreased.

Description

technical field [0001] The invention relates to the technical field of battery equalization, in particular to an equalization circuit and an equalization method for series battery packs. Background technique [0002] In the battery application system, in order to provide sufficient voltage for the device, the battery pack is usually composed of multiple battery cells in series, but if the capacity of the batteries does not match, it will affect the capacity of the entire battery pack. After working for a certain period of time, the battery packs formed in series will show great differences due to the inconsistency of the cells themselves, the inconsistency of the working temperature and other factors, which will seriously affect the life of the battery pack and the use of the system. , eventually affecting the normal use of electronic equipment. [0003] Overcharging and overdischarging the battery makes the battery easy to be damaged, for example, the capacity of the batte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H01M10/44
CPCH02J7/0018
Inventor 王贤江胡振营
Owner EDAN INSTR
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