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Charger for wireless dust collector

A technology for vacuum cleaners and chargers, which can be used in current collectors, electric vehicles, electrical components, etc., and can solve problems such as explosions, inapplicability of wireless vacuum cleaners, and unstable lithium batteries

Inactive Publication Date: 2003-07-02
LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although lithium batteries have high energy storage density and low weight, lithium batteries themselves are very unstable, and there is a danger of explosion without a protective circuit, so they are not suitable for cordless vacuum cleaners

Method used

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  • Charger for wireless dust collector
  • Charger for wireless dust collector
  • Charger for wireless dust collector

Examples

Experimental program
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Effect test

Embodiment Construction

[0014] Such as figure 2 As shown, the charger 1a for the wireless vacuum cleaner of the present invention is mainly composed of a power plug, a charging printed circuit board 3 , a charging stand 4 , a connecting terminal 5 for the stand and a discharge resistor 20 . The charging printed circuit board 3 can convert the AC power provided by the power plug into a DC power; the charging stand 4 is built in the charger and can be connected to the vacuum cleaner connecting terminal 6 through the connecting terminal 5 of the placing stand, so that the DC power supply can be stored in the built-in charger. In the nickel-cadmium battery 7 in the vacuum cleaner 12; the discharge resistor 20 can perform forced discharge below the rated voltage to the residual electric energy of the battery 7 according to the sensing signal of the residual electric quantity in the battery 7 by the charging printed circuit board 3.

[0015] Such as image 3 As shown, in order to cool the heat generated ...

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PUM

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Abstract

A charger for cordless cleaner is composed of power plug, charging PCB for AC / DC convertion and with discharging resistor, and a charging frame with connecting terminals for connecting with cleaner electrically and charging the Ni-Ca battery in cleaner. It can eliminate the storage effect of Ni-Ca battery for long service life.

Description

1. Technical field [0001] The invention relates to a charger for a wireless vacuum cleaner, in particular to a charger which can effectively prevent the storage effect of a nickel-cadmium battery. 2. Background technology [0002] Generally speaking, second-generation batteries, namely nickel-cadmium batteries, are mainly used to drive household appliances or portable household appliances, but this nickel-cadmium battery will reduce its rechargeable capacity due to the storage effect during repeated charging and discharging. , the battery life will be shortened accordingly. The memory effect is related to the crystalline structure of cadmium metal, which is a dense hexagonal structure identical to that of crystals. During the charging and discharging process of nickel-cadmium battery, the fragile part of the cadmium crystal structure will react and be disturbed, become an amorphous structure and form an isolation layer between the crystal structure and the amorphous structu...

Claims

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Application Information

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IPC IPC(8): H02J7/00H02J7/04
Inventor 南贤植柳湖善
Owner LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD