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Constant-voltage charger

A technology of constant voltage charging and resistance, which is applied in the direction of current collectors, electric vehicles, electrical components, etc., and can solve problems such as charging failure, difficult maintenance, aging lines and fires

Inactive Publication Date: 2019-05-07
李洪飞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The storage batteries in the high-power conversion online UPS system have a large capacity and a large number, so a large charging current is required. The traditional DC / DC converter generates heat when it works for a long time under heavy load conditions. In the actual charging process In addition, the battery is an important backup power source, and it is necessary to monitor the output voltage of each battery in the battery cabinet and the temperature of the battery cabinet in real time. The traditional UPS battery monitoring system uses wired monitoring. method, the large number of batteries in the battery cabinet requires complex line interleaved connection, which is prone to line aging and fire, and it is difficult to carry out later fault maintenance. Therefore, it is urgent to transform the battery monitoring system

Method used

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings.

[0013] like Figure 1 ~ Figure 3 A constant voltage charger shown includes a switching tube circuit, a PWM controller, an auxiliary circuit and a feedback loop. The input terminal of the switching tube circuit is connected to the positive pole of the input power supply. The on-off of the switching tube circuit, the auxiliary circuit supplies power to the PWM controller, the output end of the switching tube circuit is connected to one end of the inductor, the other end of the inductor is connected to the filter capacitor, the other end of the filter capacitor is connected to the negative pole of the input power supply, and the two ends of the filter capacitor are constant The output terminal of the voltage charger and charge the parts to be charged; the feedback loop detects the output voltage of the output terminal of the constant voltage charger and transmits the dete...

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Abstract

The invention provides a constant-voltage charger in the technical field of power supply. The constant-voltage charger comprises a switch tube circuit, a PWM controller, an auxiliary circuit and a feedback loop. The input end of the switch tube circuit is connected with the positive pole of an input power supply. A mains supply is used as the input power supply after rectification. The PWM controller controls the on-off of the switch tube circuit. The auxiliary circuit supplies power to the PWM controller. The output end of the switch tube circuit is connected with one end of an inductor, andthe other end of the inductor is connected with a filter capacitor. The other end of the filter capacitor is connected with the negative pole of the input power supply. The two ends of the filter capacitor serve as the output end of the constant-voltage charger and charge an apparatus to be charged. The feedback loop detects the output voltage of the output end of the constant-voltage charger andtransmits the detected output voltage to the PWM controller. The PWM controller controls the on-off of the switch tube circuit according to the detected output voltage. The constant-voltage charger ofthe invention can charge a battery stably.

Description

technical field [0001] The invention relates to a charging device, in particular to a device for charging a battery. Background technique [0002] The storage batteries in the high-power conversion online UPS system have a large capacity and a large number, so a large charging current is required. The traditional DC / DC converter generates heat when it works for a long time under heavy load conditions. In the actual charging process In addition, the battery is an important backup power source, and it is necessary to monitor the output voltage of each battery in the battery cabinet and the temperature of the battery cabinet in real time. The traditional UPS battery monitoring system uses wired monitoring. In this way, the large number of batteries in the battery cabinet requires complex line interleaved connection, which is prone to line aging and fire, and it is difficult to carry out later fault maintenance. Therefore, it is urgent to transform the battery monitoring system....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/10H02J7/04
Inventor 李洪飞
Owner 李洪飞
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