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Main circuit structure for changing storage battery into charge and discharge

A discharge circuit, charge and discharge technology, applied in secondary battery charging/discharging, battery circuit devices, circuit devices, etc., can solve the problems of power factor reduction, grid pollution, power supply transformer heat increase, etc., to achieve harmonic Effects of pollution reduction and energy saving

Inactive Publication Date: 2008-06-18
江苏金帆电源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Electric energy is exchanged on the AC power grid, which further increases the harmonics and further reduces the power factor, causing serious pollution to the power grid, and then causing damage to electrical equipment; moreover, harmonics will increase the calorific value of the power supply transformer, causing a large number of Electricity is wasted

Method used

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  • Main circuit structure for changing storage battery into charge and discharge
  • Main circuit structure for changing storage battery into charge and discharge
  • Main circuit structure for changing storage battery into charge and discharge

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Embodiment Construction

[0014] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0015] As shown in Figure 2, the storage battery of the present invention is formed into a charge-discharge main circuit structure, including: a reversible DC power supply 1 composed of six power transistors Q1-Q6, an input filter inductor L1 and an output filter capacitor C1. The power tube is a fully-controlled IGBT with a built-in reverse diode. Of course, the reverse diode can also be installed externally. The positive and negative poles of the power supply 1 are connected to the positive and negative DC buses in the DC bus unit 2 respectively. The charging and discharging units 3 and 4 are connected, and each charging and discharging unit includes a reversible charging circuit and a discharging circuit, wherein: the reversible charging circuit is mainly composed of an IGBT with a built-in reverse diode (in the charging and discharging unit...

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Abstract

The invention discloses an accumulator formation charging / discharging main circuit structure which can improve power factor and reduce the harmonic pollution to power network. The invention comprises a power supply which is a reversible DC power supply with an anode and a cathode respectively connected with a positive DC bus and a negative DC bus which are connected with at least one charging / discharging unit; each charging / discharging unit comprises a charging circuit which is connected with a reversible LED in parallel and a discharging circuit; the input terminal of the charging circuit is connected with the positive DC bus; the output terminal of the discharging circuit and the cathode output terminal of the charging / discharging unit are both connected with the negative DC bus; the output terminal of the charging circuit is connected with the input terminal of the discharging circuit and then connected with the anode output terminal of the charging / discharging unit. The power factor of the invention is close to 1; the invention greatly reduces the harmonic pollution to power network and saves energy resource.

Description

technical field [0001] The invention relates to a charging and discharging main circuit structure for forming storage batteries. Background technique [0002] In the production process of the battery, it is necessary to charge and discharge the battery repeatedly, and this process is called formation. As shown in Figure 1, the main circuit structure of battery charging and discharging, which is widely used in China, usually adopts a rectifying thyristor group composed of six thyristors D1~D6, and a rectifying thyristor group is connected in series in the output circuit of the rectifying thyristor group. The smoothing reactor L and the two sets of contacts of the switch KM2, the two sets of contacts of the switch KM2 are crossed and connected to the two sets of contacts of the switch KM1, the smoothing reactor L is used as a current filter element to smooth the output current; The working principle is: when the battery pack B is charged, the switch KM1 is closed and the swit...

Claims

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Application Information

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IPC IPC(8): H02J7/00H01M10/44
CPCY02E60/10
Inventor 彭正雄
Owner 江苏金帆电源科技有限公司
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