High-voltage interlock loop (“HVIL”) switch having a reed relay
First Claim
1. A high-voltage (“
- HV”
) system for a vehicle, comprising;
a HV source providing HV power;
a low-voltage source providing a low-voltage power on a low-voltage signal line,wherein the low-voltage power is less than the HV power;
a high-voltage interlock loop (“
HVIL”
) switch in communication with the low voltage source via the low-voltage signal line, comprising;
a reed relay including a pair of elongated magnetic reeds and that is contained and generally hermetically sealed within an envelope; and
a magnetic element that is selectively positioned within an actuation distance from the reed relay, wherein the HVIL switch is in a closed circuit condition if the magnetic element is positioned within the actuation distance from the reed relay and in an open circuit condition if the magnetic element is positioned outside of the actuation distance from the reed relay;
at least one control module in communication with the HVIL switch, the at least one control module monitoring the HVIL switch and sending a signal on the low-voltage signal line to deactivate supply of HV power if the open circuit condition is detected,wherein the magnetic element is located within a removable cover affixed to a housing, wherein the housing includes the envelope,wherein the magnetic element is automatically positioned outside of the actuation distance from the reed relay to create the open circuit condition when the removable cover is removed from the housing, andwherein the at least one control module includes first and second resistive elements configured to determine a short circuit condition.
3 Assignments
0 Petitions
Accused Products
Abstract
A 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.
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Citations
19 Claims
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1. A high-voltage (“
- HV”
) system for a vehicle, comprising;a HV source providing HV power; a low-voltage source providing a low-voltage power on a low-voltage signal line, wherein the low-voltage power is less than the HV power; a high-voltage interlock loop (“
HVIL”
) switch in communication with the low voltage source via the low-voltage signal line, comprising;a reed relay including a pair of elongated magnetic reeds and that is contained and generally hermetically sealed within an envelope; and a magnetic element that is selectively positioned within an actuation distance from the reed relay, wherein the HVIL switch is in a closed circuit condition if the magnetic element is positioned within the actuation distance from the reed relay and in an open circuit condition if the magnetic element is positioned outside of the actuation distance from the reed relay; at least one control module in communication with the HVIL switch, the at least one control module monitoring the HVIL switch and sending a signal on the low-voltage signal line to deactivate supply of HV power if the open circuit condition is detected, wherein the magnetic element is located within a removable cover affixed to a housing, wherein the housing includes the envelope, wherein the magnetic element is automatically positioned outside of the actuation distance from the reed relay to create the open circuit condition when the removable cover is removed from the housing, and wherein the at least one control module includes first and second resistive elements configured to determine a short circuit condition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- HV”
-
12. A high-voltage (“
- HV”
) system for a vehicle, comprising;a HV source providing HV power; a low-voltage source providing a low-voltage power on a low-voltage signal line, wherein the low-voltage power is less than the HV power; a high-voltage interlock loop (“
HVIL”
) switch in communication with the low voltage source via the low-voltage signal line, comprising;a reed relay including a pair of elongated magnetic reeds and that is contained and generally hermetically sealed within an envelope; and a magnetic element that is selectively positioned within an actuation distance from the reed relay, wherein the HVIL switch is in a closed circuit condition if the magnetic element is positioned within the actuation distance from the reed relay and in an open circuit condition if the magnetic element is positioned outside of the actuation distance from the reed relay; at least one control module in communication with the HVIL switch, the at least one control module monitoring the HVIL switch and sending a signal on the low-voltage signal line to deactivate supply of HV power if the open circuit condition is detected, wherein the magnetic element is located within a removable cover affixed to a housing, wherein the housing includes the envelope, wherein the magnetic element is automatically positioned outside of the actuation distance from the reed relay to create the open circuit condition when the removable cover is removed from the housing, wherein the at least one control module includes a first resistive element, a second resistive element, and a switch, and wherein the switch is used to selectively connect the control module to the HVIL switch.
- HV”
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13. A high-voltage (“
- HV”
) system for a vehicle, comprising;at least one HV device including a housing, the housing including a main body and a cover; a HV source providing HV power to the at least one HV device; a low-voltage source providing a low-voltage power on a low-voltage signal line, wherein the low-voltage power is less than the HV power; a high-voltage interlock loop (“
HVIL”
) switch in communication with the low-voltage source via the low-voltage signal line, comprising;a reed relay positioned within the main body of the housing, wherein the reed relay including a pair of elongated magnetic reeds and that is contained and generally hermetically sealed within an envelope; and a magnetic element positioned within the cover of the housing, wherein the magnetic element is selectively positioned within an actuation distance from the reed relay, wherein the HVIL switch is in a closed circuit condition if the magnetic element is positioned within the actuation distance from the reed relay and in an open circuit condition if the magnetic element is positioned outside of the actuation distance from the reed relay; at least one control module in communication with the HVIL switch, the at least one control module monitoring the HVIL switch and sending a signal on the low-voltage signal line to deactivate supply of HV power to the at least one HV device if the open circuit condition is detected, wherein the magnetic element is located within a removable cover affixed to a housing, wherein the housing includes the envelope, wherein the magnetic element is automatically positioned outside of the actuation distance from the reed relay to create the open circuit condition when the cover is removed from the housing, and wherein the at least one control module includes first and second resistive elements configured to determine a short circuit condition. - View Dependent Claims (14, 15, 16, 17, 18, 19)
- HV”
Specification