Mining explosive-proof and intrinsically safe battery charger

An intrinsically safe charging machine technology, applied in the direction of current collectors, electric vehicles, electrical components, etc., can solve the problems that the charging process of lithium batteries cannot be met, manual guarding is required for charging, and the charging process requires high requirements. It achieves weight reduction, High output power and great pollution reduction effect

Inactive Publication Date: 2013-09-04
SHANGHAI SHENCHUAN ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] (1) Power consumption is large, the traditional charger adopts power frequency rectification technology, and the power factor is low;
[0004] (2) Pollution to the environment and resources. The original charger uses a large amount of steel materials and rare metals, as well as damage to the battery due to backward charging technology, and the battery will cause huge pollution to the environment;
[0005] (3) Charging requires manual guarding. Traditional charging has no communication technology, and the charging process is backward. During the charging process, manual guarding is required to perform charging process operations;
[0006] (4) Lack of charging technology for emerging materials such as lithium batteries; lithium battery power devices have high requirements for charging technology, and traditional chargers cannot meet the charging technology of lithium battery batteries

Method used

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  • Mining explosive-proof and intrinsically safe battery charger

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Embodiment

[0017] Embodiment: This embodiment specifically relates to an explosion-proof and intrinsically safe charger for mining lithium-ion battery power supply. It adopts high-frequency technology, soft-switching technology and digital control technology to replace the traditionally used bulky Power frequency transformers and power frequency variable voltage chargers that require a lot of maintenance and consume a lot of power.

[0018] The charger is mainly composed of two parts, a power conversion circuit and a charging control circuit.

[0019] Such as figure 1 As shown, the power conversion circuit is directly powered by a 660VAC AC power supply. The power conversion circuit specifically includes a three-phase rectification circuit, a BUCK conversion circuit, an H-bridge conversion circuit and a high-frequency rectification circuit connected in sequence, as follows:

[0020] ① Three-phase rectification circuit consists of input switch (Q1), power rectification module (VD1, VD2, ...

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Abstract

The invention belongs to the power electronics and control technical field, and particularly relates to a mining explosive-proof and intrinsically safe battery charger which is suitable for a mining lithium ion storage battery power supply device in the coal mining field. The battery charger is supplied with power directly by a 660 V AC power supply, the current and the voltage used for charging of a lithium ion storage battery are generated through a rectified three-phase circuit, a BUCK converter circuit, an H-bridge converter circuit and a high-frequency rectified circuit, intelligent control and monitoring of the charging process of the lithium ion storage battery are achieved by an intelligent charging process control unit which is in communication with the outside through a CAN repeater, and therefore networked and remote charging is achieved.

Description

technical field [0001] The invention belongs to the technical field of power electronics and control, and in particular relates to a mine-used flameproof and intrinsically safe charger, which is suitable for a mine-used lithium-ion storage battery power supply device in the field of coal mines. Background technique [0002] At present, most of the mining chargers used in my country's coal mines are powered by power frequency rectification technology and have a single job without networking. There are many disadvantages in this charging process, such as: [0003] (1) Power consumption is large, the traditional charger adopts power frequency rectification technology, and the power factor is low; [0004] (2) Pollution to the environment and resources. The original charger uses a large amount of steel materials and rare metals, as well as damage to the battery due to backward charging technology, and the battery will cause huge pollution to the environment; [0005] (3) Charg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/02H02M7/04
Inventor 郑昌陆郑益飞张敬伟
Owner SHANGHAI SHENCHUAN ELECTRIC CO LTD
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