Charging power supply for high-steady-state lithium ion battery

An ion battery, charging power supply technology, applied in the field of electronics, can solve the problems of low output power, unstable output voltage and current, etc., to shorten the charging time, improve the output power, and prevent overcharging.

Inactive Publication Date: 2016-09-28
CHENGDU JUHUICAI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of unstable output voltage and current and low output power in the charging power supply for lithium-ion batteries in the prior art, and provide a high-steady-state charging power supply for lithium-ion batteries

Method used

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  • Charging power supply for high-steady-state lithium ion battery

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Embodiment

[0016] Such as figure 1 As shown, the present invention is mainly composed of control chip U2, diode rectifier U1, transformer T, thermistor RT, polar capacitor C1, resistor R1, low-pass filter circuit, thyristor voltage regulator circuit, and power adjustment circuit.

[0017] When connected, the thermistor RT is connected in series between the two input ends of the diode rectifier U1. The anode of the polar capacitor C1 is connected to the cathode output end of the diode rectifier U1, and its cathode is connected to the anode output end of the diode rectifier U1. One end of the resistor R1 is connected to the negative electrode of the polar capacitor C1, and the other end is grounded. The low-pass filter circuit is connected in series between the positive output terminal of the diode rectifier U1 and the VDD pin of the control chip U2. The thyristor voltage stabilizing circuit is connected in series between the control chip U2 and the primary side of the transformer T. The p...

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PUM

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Abstract

The invention discloses a charging power supply for a high steady-state lithium-ion battery, which is characterized in that a control chip U2, a diode rectifier U1, a transformer T, a thermistor RT, a polar capacitor C1, and a resistor R1 are connected in series to the diode The low-pass filter circuit between the positive output terminal of the rectifier U1 and the VDD pin of the control chip U2, the thyristor voltage stabilizing circuit connected in series between the control chip U2 and the primary side of the transformer T, and the inductance coil connected with the secondary side of the transformer T respectively The terminal of the same name of L4 is composed of a power adjustment circuit connected with the control chip U2. The present invention can provide the 4.2V reference voltage required for charging the lithium-ion battery; at the same time, the present invention can charge the lithium-ion battery with a constant current to 4.2V and switch to constant voltage charging, so that the present invention can provide a stable voltage for the lithium-ion battery. The charging voltage and current can effectively prevent the lithium-ion battery from being overcharged.

Description

Technical field [0001] The invention relates to the field of electronics, in particular, a high-steady state lithium ion battery charging power source. Background technique [0002] At present, lithium-ion batteries are widely used in portable electronic devices such as mobile phones, camcorders, notebook computers, cordless phones, power tools, remote control or electric toys, cameras, etc. due to their excellent characteristics. However, the existing charging power supply for lithium ion batteries has unstable output voltage and current, which leads to overcharge of the lithium ion battery and shortens the service life of the lithium ion battery. At the same time, the existing charging power supply for lithium-ion batteries also has the problem of low output power, resulting in excessively long charging time for the lithium-ion batteries. [0003] Therefore, it is imperative to provide a charging power source for lithium-ion batteries that can output stable voltage and current a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/217H02M3/156H02M1/12H02J7/10
CPCH02M7/217H02J7/06H02J2007/10H02M1/12H02M3/156
Inventor 不公告发明人
Owner CHENGDU JUHUICAI TECH
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