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Battery charging circuit and charger

A battery charging and recharging battery technology, which is applied in battery disconnection circuits, battery circuit devices, circuits, etc., can solve the problems of high production cost, many modules, and no battery anti-reverse connection function

Pending Publication Date: 2019-07-12
SICHUAN LEDFRIEND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the circuit is more complex and there are many modules, the production cost is relatively high, and the integrated volume is large, which is not conducive to the miniaturization of the circuit and low-cost production, and there is no anti-reverse connection function of the battery, which cannot prevent the battery from being damaged. Short circuit caused by reverse connection

Method used

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  • Battery charging circuit and charger
  • Battery charging circuit and charger
  • Battery charging circuit and charger

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] figure 1 It is a schematic structural diagram of a battery charging circuit provided in Embodiment 1 of the present invention.

[0046] The battery charging circuit 100 includes a control circuit 110, a battery switch circuit 120 and an anti-reverse connection circuit 130;

[0047] The control circuit 110 is used to connect the rechargeable battery 140, detect the voltage of the rechargeable battery 140, and generate high and low levels according to the voltage of the rechargeable battery 140 to send to the battery switch circuit 120;

[0048] In the embodiment of the present invention, the battery charging circuit 100 can be applied to various products that need to provide a charging interface for the battery, for example, it can be applied in a battery charger, or in various electronic products equipped with rechargeable batteries, such as various A portable LED lighting equipment and emergency lighting equipment. The rechargeable battery 140 is a battery that can b...

Embodiment 2

[0056] figure 2 It is a schematic structural diagram of a battery charging circuit provided by Embodiment 2 of the present invention.

[0057] The battery charging circuit 200 includes a control circuit 210, a battery switch circuit 220 and an anti-reverse connection circuit 230;

[0058] The control circuit 210 is used to connect the rechargeable battery 240, detect the voltage of the rechargeable battery 240, and generate a high or low level according to the voltage of the rechargeable battery 240 to send to the battery switch circuit 220;

[0059] The battery switch circuit 220 is connected to the control circuit 210, and is used to connect the charging circuit of the rechargeable battery 240 when receiving the low level sent by the control circuit 210; Disconnect the charging loop of the rechargeable battery 240;

[0060] The anti-reverse connection circuit 230 is connected to the battery switch circuit 220 and used to connect the rechargeable battery 240, and controls ...

Embodiment 3

[0071] Figure 5 It is a schematic structural diagram of a battery charging circuit provided by Embodiment 3 of the present invention.

[0072] The battery charging circuit 300 includes a control circuit 310, a battery switch circuit 320 and an anti-reverse connection circuit 330;

[0073] The control circuit 310 is used to connect the rechargeable battery 340, detect the voltage of the rechargeable battery 340, and generate a high or low level according to the voltage of the rechargeable battery 340 to send to the battery switch circuit 320;

[0074] The battery switch circuit 320 is connected to the control circuit 310, and is used to connect the charging circuit of the rechargeable battery 340 when receiving the low level sent by the control circuit 210; Disconnect the charging circuit of the rechargeable battery 340;

[0075] The anti-reverse connection circuit 330 is connected to the battery switch circuit 320 and used to connect the rechargeable battery 340, and controls...

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Abstract

The invention provides a battery charging circuit and a charger. The battery charging circuit comprises a control circuit, a battery switching circuit and an anti-reversal-connection circuit; the control circuit detects the voltage of a chargeable battery, generates a high / low level according to the voltage of the chargeable battery, and sends the high / low level to the battery switching circuit; the battery switching circuit is connected with the control circuit, and is used to connect with a charging circuit of the chargeable battery when receiving the low level from the control circuit or disconnected from the charging circuit of the chargeable battery when receiving the high level from the control circuit; and the anti-reversal-connection circuit is connected with the battery switchingcircuit and the chargeable battery, and controls the battery switching circuit to disconnect the charging circuit of the chargeable battery when reversal connection of the chargeable battery is detected. Thus, ON / OFF of the charging circuit of the chargeable battery can be controlled by use of a simple circuit, the circuit is miniaturized, the cost is reduced, and the anti-reversal-connection circuit is used to prevent reversal connection between anode and cathode of the chargeable battery from causing short circuit.

Description

technical field [0001] The invention relates to the technical field of battery charging, in particular to a battery charging circuit and a charger. Background technique [0002] In the existing battery charging management system, multiple modules and complex circuit switches are required to control the transmission process of electric energy in the charging control of the battery. Because the circuit is more complex and there are many modules, the production cost is relatively high, and the integrated volume is large, which is not conducive to the miniaturization of the circuit and low-cost production, and there is no anti-reverse connection function of the battery, which cannot prevent the battery from being damaged. Short circuit caused by reverse connection. Contents of the invention [0003] In view of the above problems, the present invention provides a battery charging circuit and a charger to realize the on-off control of the charging circuit of the rechargeable ba...

Claims

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Application Information

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IPC IPC(8): H02J7/00H01M10/42
CPCH02J7/0086H02J7/0034H02J7/0031H01M10/4257H01M2010/4271Y02E60/10
Inventor 李海廷周孝亮朱俊高钟春林黄斌黄和明范勇叶界明李少科陈学文唐辉张秀
Owner SICHUAN LEDFRIEND TECH
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