Charging control method of rechargeable battery

A charge control method and rechargeable battery technology, applied to battery circuit devices, current collectors, electric vehicles, etc., can solve the problems of providing technical solutions for battery pack charging methods without series connection, increase hardware costs, prolong service time, The effect of maintenance life

Active Publication Date: 2018-03-23
UNIVERSAL SCIENTIFIC INDUSTRIAL (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned patents are mainly aimed at battery packs connected in parallel, and do not provide any technical solutions for the charging method of battery packs connected in series

Method used

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  • Charging control method of rechargeable battery
  • Charging control method of rechargeable battery
  • Charging control method of rechargeable battery

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Embodiment Construction

[0028] In order to better understand the characteristics of the present invention, the present invention provides a preferred embodiment and is described as follows in conjunction with the accompanying drawings, please refer to Figure 1 to Figure 4 . In the following embodiments, identical or similar components will use the same component symbols for easy identification.

[0029] The so-called rechargeable battery 10 in this specification can be at least (but not limited to) any one of lithium battery, nickel-metal hydride battery, and lead-acid battery.

[0030] Please refer first figure 1 A schematic diagram of the hardware structure of the battery charging module. The battery charging module 1 includes a rechargeable battery 10 , a microcontroller 20 , and a charger 30 . Wherein, the rechargeable battery 10 includes two first battery cells 13 and second battery cells 14 connected in series, and the first battery cells 13 and the second battery cells 14 are correspondingl...

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Abstract

The charging control method of the rechargeable battery of the present invention performs the following steps in the fast charging mode: charging the rechargeable battery, the rechargeable battery has a plurality of battery cells connected in series, and each battery cell is connected with a balancing circuit correspondingly; Then judge whether the difference between the maximum voltage value and the minimum voltage value of each cell voltage is less than the critical value, if the judgment result is yes, then control all the balance circuits to open circuit state and return to the measurement step, otherwise Switch the balance circuit corresponding to the cell with the maximum voltage value to a closed circuit state, and the other balance circuits to an open circuit state, and adjust the current value of the charging current to be equal to the calculated value obtained by dividing the maximum voltage value by the resistance value of the balance circuit, and then Back to the measurement step; the charging is stopped after the charging is completed; thus, the balance circuit can be controlled during the charging process, so that the problem of excessive voltage difference between the cells in the fast charging mode can be avoided.

Description

technical field [0001] The invention relates to a charging control method of a rechargeable battery, in particular to a charging control method which utilizes a balancing circuit and charging current adjustment measures to uniformly charge each cell of the rechargeable battery. Background technique [0002] A traditional rechargeable battery is charged in three modes in sequence: pre-charge mode, fast charge mode and constant voltage mode. Firstly, in the pre-charging mode, charge each cell of the rechargeable battery with a low current. When the voltage of each cell reaches the first transition voltage, enter the fast charging mode and change to a high current. Each battery cell is charged until the voltage of one of the battery cells reaches the second transition voltage to enter a constant voltage mode, and then each battery cell is charged in a constant voltage manner. [0003] In the manufacturing process of traditional rechargeable batteries, although the cells are pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
Inventor 陈鹏伦
Owner UNIVERSAL SCIENTIFIC INDUSTRIAL (SHANGHAI) CO LTD
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