Power integral protection circuit of lithium battery charge drill

A technology for protecting circuits and rechargeable drills, applied in emergency protection circuit devices, electrical components, etc., can solve the problems of short service life, troublesome use, motor burnout, etc., and achieve the effect of long service life

Inactive Publication Date: 2012-07-11
东莞市妙达电动工具制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low internal resistance of the lithium battery, if the hand drill gets stuck, it will be powerless to stop immediately, or it will not

Method used

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  • Power integral protection circuit of lithium battery charge drill
  • Power integral protection circuit of lithium battery charge drill
  • Power integral protection circuit of lithium battery charge drill

Examples

Experimental program
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Embodiment Construction

[0010] See Figure 1 to Figure 3 Shown: the present invention comprises battery 1, drive circuit module 2, control switch 3, microprocessor 4, motor 5, battery 1, drive circuit module 2, control switch 3, motor 5 are electrically connected in sequence, drive circuit module 2 and The microprocessor 4 is connected, the battery 1 is connected with the control switch 3 and the microprocessor 4 respectively, and the control switch 3 is connected with the input terminal of the microprocessor 4 .

[0011] The driving circuit module 2 provides current information for the microprocessor 4 , and the microprocessor 4 provides switching signals for the driving circuit module 2 .

[0012] The control switch 3 is divided into two parts, one switch supplies power to the circuit and provides the voltage information of the battery 1 to the microprocessor 4, and the other is powered by the drive circuit module 2 and controls the rotation speed of the motor 5 by the control switch 3.

[0013] T...

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PUM

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Abstract

The invention relates to the technical field of power supply circuits, in particular relates to a power integral protection circuit of a lithium battery charge drill, which comprises a battery, a driving circuit module, a control switch, a microprocessor and a motor, wherein the battery, the driving circuit module, the control switch and the motor are electrically connected sequentially, the driving circuit module is connected with the microprocessor, the battery is respectively connected with the control switch and the microprocessor, and the control switch is connected with the input end of the microprocessor. The power integral protection circuit has a simple and scientific structure design; under the condition that the current passing through the motor is not controlled, the maximum time that the charge drill can work when being clamped is calculated, the motor is protected through turning off a motor loop; and meanwhile the maximum motor working capacity and the long product service life are achieved.

Description

Technical field: [0001] The invention relates to the technical field of power supply circuits, in particular to a power integral protection circuit for a lithium battery charging drill. Background technique: [0002] At present, lithium batteries are used in electric tools and electric drills. Generally, there is no current monitoring of lithium batteries, and only the voltage and temperature of lithium batteries are used to protect batteries and motors. Due to the low internal resistance of the lithium battery, if the hand drill gets stuck, it will be powerless to stop immediately, or it will not stop rotating when the drill gets stuck, causing the motor to burn out, causing great trouble to use, and the product's service life is not long. Invention content: [0003] The purpose of the present invention is to provide a lithium battery rechargeable drill power integral protection circuit for the deficiencies of the prior art. Time, protect the motor by turning off the mot...

Claims

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Application Information

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IPC IPC(8): H02H7/08
Inventor 张耀霞
Owner 东莞市妙达电动工具制造有限公司
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