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The circuit apparatus for protecting a pre-charge resistance using an inter-lock switch

A pre-charging resistor and interlock switch technology, applied in the field of circuit devices, can solve problems such as battery system explosion

Active Publication Date: 2010-12-08
SK ON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In other words, damage to the pre-charging resistors can lead to a risk of explosion in the battery system

Method used

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  • The circuit apparatus for protecting a pre-charge resistance using an inter-lock switch
  • The circuit apparatus for protecting a pre-charge resistance using an inter-lock switch
  • The circuit apparatus for protecting a pre-charge resistance using an inter-lock switch

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Embodiment Construction

[0034] The terms used herein are defined in consideration of the functions of the present invention, and may be changed according to user's or operator's habit or intention. Therefore, the definitions of these terms should be determined based on the overall disclosure set forth herein.

[0035] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] figure 2 is a view showing a circuit arrangement using an interlock switch to protect a precharge resistor according to an embodiment of the present invention. refer to figure 2 , the circuit device for protecting the pre-charging resistor includes a pre-charging resistor 120 , a polymerizing switch 130 , a pre-charging relay 140 , a main (+) relay 150 , a main (-) relay 160 and an interlock switch 170 .

[0037] First, the pre-charge relay 140 and the main (-) relay are closed, and current flows through the pre-charge resistor, thereby charging the DC link c...

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PUM

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Abstract

The present invention relates to a circuit apparatus for protecting a pre-charge resistance using an inter- lock switch, and more particularly, to a circuit apparatus for protecting a pre-charge resistance by controlling a current flowing to a voltage transformer of an electric vehicle using an inter- lock switch and a polyswitch. The present invention provides a circuit apparatus for protecting a pre-charge resistance using an inter- lock switch, including a pre-charge resistance, a pre-charge relay and a main relay placed between a battery of a hybrid electric vehicle and a voltage transformer, wherein the circuit apparatus includes an inter- lock switch which is operated complementarily with the pre-charge relay and is for preventing continuous flow of an overcurrent to the voltage transformer and the resulting damage of the pre-charge resistance.

Description

technical field [0001] The present invention relates to a circuit device for protecting a pre-charging resistor using an interlock switch, and more particularly, to a circuit device for protecting a pre-charging resistor by using an interlock switch and a polyswitch (polyswitch) to control current flowing into a transformer of an electric vehicle circuit device. Background technique [0002] Motor vehicles include many electrical devices that use electricity to work, such as lights, air conditioning, and wipers. These electrical devices are driven by electric power output by the battery of the motor vehicle. Generally, a relay and a fuse are provided between the electrical device and the battery to prevent excessive current from flowing through the vehicle, and the current is controlled by the relay and the fuse. [0003] However, the fuse melts and opens when an overcurrent flows to protect the circuit. Also, opening of a fuse is difficult to detect in advance and can ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/10
CPCH02H9/026H02H9/001B60L3/04B60L58/20Y02T10/70H02H7/10
Inventor 朴相炫张洙晔李重辉
Owner SK ON CO LTD
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