Charging apparatus and charging/discharging apparatus

Abstract

Charging apparatus 10 includes secondary battery 13 used for buffering, rectifier 11 that supplies direct current power to secondary battery 13 used for buffering, DC-DC converter 14 connected to driving battery 3 in electric vehicle 2 via charging cable 4, switching control circuit 12, and isothermal wind generator 16 that adjusts the temperature of secondary battery 13 used for buffering from outside of secondary battery 13 used for buffering. Switching control circuit 12 switches charging apparatus 10 between a first mode in which power supplied by rectifier 11 is accumulated in secondary battery 13 used for buffering and a second mode in which driving battery 3 is charged with the power supplied by secondary battery 13 used for buffering. Secondary battery 13 used for buffering includes at least one cell in which a battery element with a positive electrode plate and a negative electrode plate that are laminated therein is sealed with an outer cover film.

Description

technical field [0001] The present invention relates to a charging device and a charging / discharging device for a secondary battery, and more particularly, to a charging device for a laminated secondary battery in which a film of a positive electrode and a negative electrode is laminated and sealed with a cover material and charging / discharging equipment. Background technique [0002] The secondary battery can be repeatedly used by means of charging and thus be used as a power source of various electric devices. Also, in recent years, high-energy secondary batteries have also been developed and used as power sources for hybrid vehicles and electric vehicles. In addition, various improvements have been made to a charging device that charges a secondary battery and a charging device that has a discharging function. [0003] For example, one capability required of a charging device is to shorten the charging time. Shortening the charging time is particularly important for a ...

AI Technical Summary

Problems solved by technology

However, if the above-mentioned tank is used as an outer cover, it is difficult for the heat outside the tank to be transferred to the internal battery element

Also, the heat capacity of the tank cannot be ignored

Also, it is difficult to produce a secondary battery having a thickness of up to 3mm due to processing restrictions on the metal plate

For the above reasons, it is difficult to control the temperature of the battery element in the tank or to control the temperature of the entire battery element to a uniform value in a short period of time

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