High-voltage interlock loop ("HVIL") switch having reed relay

一种高压互锁回路、继电器的技术，应用在继电器、电磁继电器、电路等方向，能够解决机电触点易受灰尘、侵蚀或污染物的影响、机电触点易于被篡改等问题

Inactive Publication Date: 2014-03-26
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Opening the housing leaves the electromechanical contacts vulnerable to dust, erosion or contamination
Also, electromechanical contacts can be susceptible to tampering

Method used

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  • High-voltage interlock loop ("HVIL") switch having reed relay
  • High-voltage interlock loop ("HVIL") switch having reed relay
  • High-voltage interlock loop ("HVIL") switch having reed relay

Examples

Experimental program
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Effect test

Embodiment Construction

[0046] The following description is merely exemplary in nature and is not intended to limit the disclosure, its application, or uses. As used herein, the term module refers to an application-specific integrated circuit (ASIC), an electronic circuit, a processor (shared, dedicated, or grouped) that executes one or more software or Other appropriate components of the above functions.

[0047] now refer to figure 1 , the exemplary embodiment relates to a vehicle 10 that is a high voltage propulsion vehicle, such as a hybrid vehicle, a plug-in hybrid vehicle, or an electric vehicle. In one embodiment, the vehicle 10 may include an internal combustion engine 20 and a transmission 22 selectively connected to the engine 20 by a clutch 24 . Specifically, clutch 24 may be used to disconnect engine 20 from transmission 22 to allow vehicle propulsion by an alternative energy source, such as AC motor 30 . The vehicle 10 includes various high voltage (HV) devices 28 powered by high volt...

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PUM

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Abstract

The invention relates to a high-voltage interlock loop ("HVIL") switch having a reed relay. The high-voltage ("HV") system for a vehicle is provided, and includes a HV source providing HV power, a low-voltage source, a high-voltage interlock loop ("HVIL") switch, and at least one control module. The low-voltage source provides a low-voltage power that is less than the HV power. The HVIL switch is in communication with the low-voltage source. The HVIL switch includes a reed relay and a magnetic element. The magnetic element is selectively positioned within an actuation distance from the reed relay. The HVIL switch is in a closed circuit condition when the magnetic element is positioned within the actuation distance from the reed relay, and is in an open circuit condition when the magnetic element is positioned outside of the actuation distance from the reed relay. The at least one control module is in communication with and monitors the HVIL switch.

Description

technical field [0001] Exemplary embodiments of the present invention relate to high voltage (HV) systems of vehicles, and more particularly to HV systems including high voltage interlock loop (HVIL) switches with reed relays. Background technique [0002] A high-voltage power source, such as a rechargeable battery pack, can be supplied to hybrid vehicles, plug-in hybrid vehicles, and electric vehicles. To protect against accidental access to high voltage (HV) components such as AC motors, power converters or rechargeable battery packs, a high voltage interlock loop (HVIL) switch or circuit may be provided. The HVIL switch can be powered by relatively low voltage power and is provided for overall protection against accidental access to HV components. Specifically, if the electrical characteristics of the HVIL switch undergoes any change (eg, an open circuit condition) that indicates possible access to the HV component, the HV power supply will be disconnected from the HV co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L3/00
CPCB60L3/00B60L58/00H01H51/28Y02T90/16
Inventor M.徳默勒H.罗伊斯
Owner GM GLOBAL TECH OPERATIONS LLC
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