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Battery pack charging method and its realizing apparatus

A technology of a charging device and a charging method, which is applied to battery circuit devices, secondary battery charging/discharging, circuit devices, etc., can solve problems such as easily damaged batteries, and achieve extended service life, battery protection, and avoidance of charging and battery capacity. The effect of the saturation phenomenon

Active Publication Date: 2012-11-07
陈钢
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  • Description
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the defect that the battery pack is easily damaged in the series charging of the battery pack, and provide a battery pack charging method and its realization device that can effectively protect the battery and prolong the service life of the battery

Method used

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  • Battery pack charging method and its realizing apparatus

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Embodiment Construction

[0012] The method of the invention is as follows: independently charge the individual batteries forming the battery group in parallel, switch the circuit through the circuit switching module after the charging is completed, and connect the batteries in series to form the battery group.

[0013] The specific implementation of the charging device for implementing the method of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0014] Such as figure 1 As shown, the present invention includes a power conversion module, a pulse generator and at least two charging lines arranged in front and back, each charging line includes a pulse charging module and a line switching module, and the line switching module is a circuit connected by a double-contact relay. The pulse charging module and the power conversion module of the charging line are connected through a connecting line. The first charging line includes a first pulse charging m...

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Abstract

A battery pack charging method and its realizing apparatus belongs to the technical field of charging. Charging of batteries in series makes the batteries easily damaged. The invention is characterized in that individual batteries in parallel are separately charged and a circuit is switched after charging through a circuit switching module such that the batteries form a battery pack. A charging device comprises a pulse generator and at least two charging circuits which are arranged fore and aft. Each charging circuit comprises a pulse current charge module and a circuit switching module. The pulse current charge module is respectively connected with a power supply switching module and the circuit switching module through connecting lines. The pulse current charge module is provided with a directly connected connecting line which is connected with battery electrodes. The circuit switching module is provided with two switch connecting lines, which are respectively used to connect with the battery electrodes and the directly connected connecting line of the pulse current charge module of the rear charging circuit. The pulse generator is connected with the pulse current charge module of each circuit through the connecting line. Therefore, charging when battery capacity is saturated and the phenomenon that the battery capacity can not be charged to a saturated state are avoided, thus protecting the batteries.

Description

technical field [0001] The invention belongs to the technical field of charging, and in particular relates to a method for charging a battery pack and a device for realizing it. Background technique [0002] The power supply of electric vehicles currently on the market is composed of multiple batteries connected in series. There must be capacity differences among the batteries that make up the battery pack, and the charging and discharging of the battery pack are all in series. When charging, the battery with a small capacity reaches saturation first, and the battery with a large capacity is not saturated. If you need to continue charging, current will still flow through the battery that has reached saturation, which will cause damage to the battery and shorten the battery life. The internal resistance of the battery that has reached saturation becomes larger, and the passing charging current becomes smaller, so that the battery with a large capacity cannot receive suffici...

Claims

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Application Information

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IPC IPC(8): H01M10/44H02J7/02
CPCY02E60/12Y02E60/10
Inventor 石炜
Owner 陈钢
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