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Equalizing charge method and equalizing charger

A technology of balanced charging and charging detection, which is applied in the direction of secondary battery charging/discharging, current collectors, battery circuit devices, etc., can solve the problems of high cost of detection circuits, floating detection circuits, unsuitable lead-acid batteries, etc., to ensure charging effect, ensure consistency, and realize the effect of intelligent control

Inactive Publication Date: 2010-07-14
常州黄海麦科卡电动汽车有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a problem of floating ground in the detection circuit of the single battery, the cost of the detection circuit is very high, and it is only suitable for low-voltage battery packs, not for lead-acid batteries, and the charging method can only be charged by constant current, which is not very practical.

Method used

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  • Equalizing charge method and equalizing charger
  • Equalizing charge method and equalizing charger
  • Equalizing charge method and equalizing charger

Examples

Experimental program
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Effect test

Embodiment 1

[0054] (Embodiment 1, balanced charging method)

[0055] See figure 1 , the balanced charging method of the present embodiment, its core is to connect each single battery of the battery pack in parallel, and then the single-chip microcomputer controls each battery to charge simultaneously. Specifically, the steps of equalizing charging are as follows:

[0056] ① Connect N (N is an integer, N≥2) single cells in the battery pack in parallel. The positive poles of each battery are drawn out with wires, and the negative poles are connected together and lead out with a common wire, thereby forming N batteries in parallel. In this embodiment, a parallel mode can be formed through the charging and discharging conversion joint.

[0057] ②At the same time, independently and quickly charge N cells. In this step, the 220V power supply charges the first battery after being rectified, filtered, up-frequency and transformed. The single-chip microcomputer performs N-channel pulse width ...

Embodiment 2

[0061] (Embodiment 2, balanced charging method)

[0062] still see figure 1 In this embodiment, on the basis of the method in Embodiment 1, the monitoring of the temperature during the charging process of the battery is added to protect the rechargeable battery and avoid over-current and over-temperature phenomena.

[0063] In this embodiment, while charging each battery in step ② of Embodiment 1, the temperature detection circuit also collects the temperature of each battery in real time, and feeds back the collected temperature data of the corresponding battery to the The single-chip microcomputer compares and controls it with the first temperature setting value and the second temperature setting value. When the first temperature setting value is reached, the single-chip microcomputer controls to reduce the charging current of the battery or temporarily stop charging the battery. The single battery is charged for 15 minutes, and then the minimum threshold current is judged ...

Embodiment 3

[0065] (Embodiment 3, balanced charger)

[0066] See figure 2, The balanced charger of this embodiment includes a single-chip microcomputer control center 1, a battery pack charging detection control module 2, a power supply module 3 and a chip power module 4. The power supply module 3 is electrically connected to the battery pack charging detection control module 2; the single-chip microcomputer control center 1 is electrically connected to the battery pack charging detection control module 2, and controls the battery pack charging detection control module 2 through multiple pulse width modulation outputs; the chip power module 4 is electrically connected with the chips in the single-chip microcomputer control center 1, the battery pack charging detection control module 2 and the power supply module 3. The battery charge detection control module 2 includes N (N is an integer, N≥2) single batteries connected in parallel and a battery charge detection circuit 2-1 - 2-N corres...

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Abstract

The invention discloses an equalizing charge method and an equalizing charger. The equalizing charge method comprises the following steps: (1) connecting N (N is integer and is more than or equal to 2) single batteries in a battery pack in parallel; (2) independently and quickly charging the N single batteries at the same time; and (3) after the single batteries meet the charge requirement, finishing charging the battery pack. The equalizing charge method of the invention changes the series discharge mode of the single batteries of the battery pack into a parallel mode to independently charge the batteries of the battery pack, thus independently controlling the charge process of the single batteries to ensure equalizing charge for the single batteries. The charger of the invention uses a single chip control center as the core, and simply and precisely realizes independent charge and independent control of the single batteries.

Description

technical field [0001] The invention relates to a method for charging a battery and a charger, in particular to a method for equalizing charging of a lead-acid battery and an equalizing charger using the method. Background technique [0002] The battery is the main energy storage element of various electric devices such as electric vehicles, and is a relatively critical component. The performance of the battery will directly affect the performance of the electric vehicle. [0003] The commonly used rechargeable battery pack is composed of multiple rechargeable batteries connected in series, so a single battery is the basic unit of the battery pack. From the use of electric vehicles, it is found that the service life of battery packs in electric vehicles is much shorter than the normal service life of a single battery. Research shows that this is because the batteries are in an unbalanced state. [0004] Among the single batteries that make up the series battery pack, due to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/44H02J7/00
CPCY02E60/12Y02E60/10
Inventor 欧阳明高刘志贤王磊聂敬礼唐怀刚滕景龙葛燕裴凤仙王瑛
Owner 常州黄海麦科卡电动汽车有限公司
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