Equalization device for battery electric quantity

A technology for battery power and equalization devices, applied in battery circuit devices, circuit devices, current collectors, etc., can solve problems such as battery capacity loss and battery cell difference expansion, achieve low additional consumption, improve product reliability, and expand applicable batteries Kind of effect

Active Publication Date: 2012-07-18
无锡金雨电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a solution to the problem of battery cell difference enlargement and battery capacity loss and service life caused by the application process of the previous series battery pack.

Method used

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  • Equalization device for battery electric quantity
  • Equalization device for battery electric quantity
  • Equalization device for battery electric quantity

Examples

Experimental program
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Embodiment Construction

[0024] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and through the specific embodiment 1.

[0025] figure 1 It is a schematic structural diagram of the battery power balance device provided in Embodiment 1 of the present invention. Such as figure 1 As shown, the device includes a battery unit, a charge and discharge unit, an electronic switch unit, a bootstrap boost drive unit, a sampling unit and a main control unit.

[0026] The battery power balance device includes a battery pack composed of at least two battery cells connected in series. When the battery power device includes a battery pack composed of M battery cells in series (M is a positive integer greater than or equal to 2), the battery power balance device also includes M+1 charging and discharging units, and M electronic switches unit, M bootstrap boost drive units, a sampling unit and a main control unit.

[0027] Wherein, the po...

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PUM

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Abstract

The invention discloses an equalization device for battery electric quantity. The device comprises battery units, charging/discharging units, electronic switch units, bootstrap-boosting driving units, a sampling unit and a main control unit, wherein each charging/discharging unit is used for storing electric quantity and transferring the energy of the two adjacent battery units; each electronic switch unit is used for controlling electric quantity storage of each charging/discharging unit and synchronous rectification during electric quantity transfer of the two adjacent battery units; each bootstrap-boosting driving unit is used for driving each electronic switch unit through bootstrap boosting; the sampling unit is used for acquiring the voltage information of the battery units and sending the voltage information to the main control unit; and the main control unit is used for controlling one of the electronic switch units to be turned on and controlling the adjacent electronic switch unit to be turned off by outputting a pulse width modulation signal. The invention aims to solve the problems of loss of battery capacity and short service life caused by large difference of the battery units in the application process of the conventional series battery pack.

Description

technical field [0001] The invention relates to the technical field of battery circuits, in particular to a battery power balance device. Background technique [0002] At present, the battery power supply is generally composed of N low-voltage battery cells in series to obtain a higher power supply voltage and power capacity to meet the needs of different usage occasions. However, due to the limitations of the material characteristics and process conditions of the battery, there are often differences between the battery units to varying degrees. In this way, after many charge and discharge cycles in use, the difference between the battery units will be enlarged. The "short board" effect of the series battery pack, the power capacity of the entire series battery pack will be limited by the battery unit with the smallest electric energy capacity in the series battery pack, which greatly affects the use effect and life of the series battery pack. [0003] In order to solve the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
Inventor 虞金中
Owner 无锡金雨电子科技有限公司
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