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Battery charging circuit and charging device

A battery charging and circuit technology, applied in battery circuit devices, circuit devices, current collectors, etc., can solve problems such as power consumption

Inactive Publication Date: 2017-05-31
SHENZHEN TCL DIGITAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Regrettably, figure 2 The battery charging circuit shown in the solution figure 1 While the battery charging circuit shown has problems, it also brings new problems, specifically: when there is no AC voltage to charge the battery, the battery will discharge through the discharge resistor until the stored power of the battery is exhausted

Method used

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  • Battery charging circuit and charging device
  • Battery charging circuit and charging device
  • Battery charging circuit and charging device

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Embodiment Construction

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0027] It should be noted that if all directional indications (such as up, down, left, right, front, back...) in the embodiment of the present invention are only used to explain the various components in a certain posture (as shown in the drawing) If the specific posture changes, the directional indication will also change accordingly.

[0028] In addition, the descriptions involving "first", "second" and so on in the present invention are only for de...

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PUM

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Abstract

The invention discloses a battery charging circuit and a charging device. The battery charging circuit comprises a transformer, a first resistor, a second resistor, a rectifier diode and a first voltage stabilizing diode, wherein the transformer is used for converting commercial power into alternating voltage with appropriate amplitude; when the alternating voltage is in a positive half cycle, a secondary line winding of the transformer, the first resistor and the amplifier diode are connected to a battery to form a charging circuit, and the battery is charged; and when the alternating voltage is in a negative half cycle, the secondary line winding, the first voltage stabilizing diode and the second resistor are connected to the battery to form a discharging circuit, and the polarization voltage of the battery is released. Through the technical scheme, the polarization voltage, generated in the charging process, of the battery can be eliminated, and the battery can also be prevented from being discharged through the discharging circuit in the absence of alternating voltage output.

Description

technical field [0001] The invention relates to the technical field of charging devices, in particular to a battery charging circuit and a charging device. Background technique [0002] At present, many electronic devices and electrical appliances are powered by rechargeable batteries, such as lead-acid batteries, nickel-cadmium batteries, nickel-metal hydride batteries, lithium-ion batteries, lithium polymer batteries and so on. What these rechargeable batteries have in common is that they can be repeatedly charged and discharged hundreds to a thousand times. Existing battery charging circuits such as figure 1 with figure 2 shown. [0003] figure 1 In the process, the mains power is first converted into an appropriate AC voltage by the transformer TR, then rectified by the rectifier diode DS1 into a pulsating DC voltage, and finally charged by the battery BAT1 through the current limiting resistor RS1. figure 1 While the battery charging circuit shown has the advantag...

Claims

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Application Information

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IPC IPC(8): H02J7/02
CPCH02J7/00H02J7/02
Inventor 王坚
Owner SHENZHEN TCL DIGITAL TECH CO LTD