Charger-discharger with equalization function using both convertor and multi-stage voltage doubler rectifier circuit

A technology of voltage doubling rectifier circuit and charger, which is applied in the direction of secondary battery charging/discharging, conversion equipment using Cuk converter, arrangement of multiple synchronous batteries, etc. There are problems such as discharger, to achieve the effect of cost reduction
CN105247757AInactive Publication Date: 2016-01-13JAPAN AEROSPACE EXPLORATION AGENCY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JAPAN AEROSPACE EXPLORATION AGENCY
Publication Date
2016-01-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention addresses the problem of providing a charger which is capable of performing charging while eliminating variations in the voltages of storage cells and which does not require that at least the circuit part responsible for equalization of the voltages of the storage cells be designed to have a large current capacity, the present invention also addressing the problem of providing a charger-discharger further equipped with a discharging function in such a charger. Provided are a charger and a charger-discharger, comprising a convertor, an input circuit, and a multi-stage voltage doubler rectifier circuit. A voltage equalization function is implemented by connecting an element in the convertor to which a rectangular wave voltage is applied to the multi-stage voltage doubler rectifier circuit via an input circuit, and a charging-discharging function is implemented by connecting the output of the convertor to the multi-stage voltage doubler rectifier circuit.
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Description

technical field

[0001] The present invention relates to a charge-discharge device, which balances the voltage of each storage unit and charges it in a storage module composed of a plurality of storage units (secondary batteries, electric double-layer capacitors, etc.) connected in series. discharge. Background technique

[0002] In order to obtain a predetermined voltage corresponding to the application, electric storage cells such as secondary batteries and electric double-layer capacitors are used by connecting multiple cells in series to form a module. After repeated charging and discharging of the above-mentioned power storage modules, cell voltage variations will occur due to variations in the capacity, internal resistance, ambient temperature, self-discharge, etc. of each cell. In the power storage module where unevenness has occurred, problems such as accelerated deterioration and reduction in usable energy occur. Therefore, when using a plurality of power storage c...

Claims

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