Power supply lock circuit with momentary arcing protection

A power lock and motor drive circuit technology, applied in the field of power locks, can solve problems such as severe sparking, power lock burnout, and increased contact impedance, so as to reduce the chance of sparking and prolong the service life

Inactive Publication Date: 2010-11-17
GIANT ELECTRIC VEHICLE KUNSHAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With the development of the electric vehicle industry, the power of the vehicle continues to increase. In order to prevent interference, the capacity of the filter capacitor in t

Method used

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  • Power supply lock circuit with momentary arcing protection
  • Power supply lock circuit with momentary arcing protection
  • Power supply lock circuit with momentary arcing protection

Examples

Experimental program
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Embodiment

[0018] Embodiment: A power supply lock circuit with instantaneous ignition protection, including a motor drive circuit 10, a power supply and a switch K, the motor drive circuit 10 includes a filter capacitor C and other working circuits 1, and the filter capacitor C and other working circuits 1 Parallel connection, the other end of the power supply is connected to the other end of the filter capacitor C in parallel, one end of the switch K can be connected to the other end of the power supply, and there is a resistor, the other end of the resistor is connected in series with the end of the filter capacitor C, and the other end of the switch K can be connected to one end of the filter capacitor C and the other end of the resistor one of them.

[0019] As a further improvement of the present invention, the switch K is a rotary switch, and the rotation center of the switch K is in the middle of the switch K.

[0020] As a further improvement of the present invention, the structu...

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PUM

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Abstract

The invention discloses a power supply lock circuit with momentary arcing protection, comprising a motor driving circuit, a power supply and a switch, wherein the motor driving circuit comprises a filter capacitor and other working circuits, wherein the filter capacitor is in parallel connected with the other working circuits; the other end of the power supply is in parallel connected with the other end of the filter capacitor; one end of the switch can be connected with one end of the power supply and is provided with a resistor; the other end of the resistor is in series connected with one end of the filter capacitor; and the other end of the switch can be connected with one of one end of the filter capacitor and one end of the resistor. Current during unlocking moment is reduced by arranging the resistor during the unlocking moment of a power supply lock, and the resistor is switched off to stabilize the working circuits of a drive motor after the filter capacitor is charged to be saturated, therefore the arcing probability of a contact point during the unlocking moment of the power supply lock is effectively reduced, and the service life of the power supply lock is prolonged.

Description

technical field [0001] The invention relates to the field of power locks, in particular to a power lock circuit. Background technique [0002] At present, when the traditional power supply lock is unlocked, the switch rotates to make the two contacts connected, and the power supply instantly charges and saturates the filter capacitor in the motor drive circuit to drive the motor to work. [0003] With the development of the electric vehicle industry, the power of the vehicle continues to increase. In order to prevent interference, the capacity of the filter capacitor in the driver is gradually increased, resulting in severe ignition when the power lock is unlocked, increased contact impedance, and heat during riding. And cause the power lock to burn out. Contents of the invention [0004] In order to overcome the above defects, the present invention provides a power lock circuit with instant ignition protection, which can effectively reduce the probability of ignition of ...

Claims

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Application Information

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IPC IPC(8): H01H9/54H01H9/30H01H27/06
Inventor 许刚华
Owner GIANT ELECTRIC VEHICLE KUNSHAN
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