Battery disconnect switch for electric vehicle

• US 5,864,106 A
• Filed: 01/07/1997
• Issued: 01/26/1999
• Est. Priority Date: 01/07/1997
• Status: Expired due to Term

• Current Assignee: FCA US LLC (Stellantis NV)
• Original Assignee: Chrysler Corporation (Stellantis NV)
• Inventors: Hartwig, Kenneth, Clark, Dean B., Zielinski, Thomas E., Neblett, Larry L., Sway-Tin, Min
• Primary Examiner(s): Gellner, Michael L.
• Assistant Examiner(s): Friedhofer, Michael A.
• Application Number:
  US08/779,582
• Time in Patent Office: 749 Days
• Field of Search: 200/1 R, 200/1 V, 200/16 R-16 E, 200/17 R, 200/18, 200/400, 200/401, 200/424, 200/425, 200/431, 200/501, 200/318, 200/337, 307/10.7
• US Class Current: 200/17.00R
• CPC Class Codes: B60L 3/0046 relating to electric energy storage systems, e.g. batteries or capacitors
• CPC Class Codes: B60L 3/04 Cutting off the power supply under fault conditions protective devices and circuit arrangements in general H01H; H02H
• CPC Class Codes: H01H 3/40 using friction, toothed, or screw-and-nut gearing

Abstract

A battery disconnect switch is provided for breaking the conductive path in an electric vehicle comprising at least one conductor pin moveable between a conducting position and a non-conducting position. At least one spring is provided for biasing the conductor pin toward the non-conducting position. A surging mechanism moves the conductor pin to the conducting position and a locking mechanism holds the conductor pin in the conducting position against the bias of the spring. A release mechanism releases the locking mechanism allowing the bias of the spring to force the conductor pin to its non-conducting position.

Claims

1. A disconnect switch comprising:

at least one conductor pin moveable between a conducting position and a non-conducting position;

at least one spring in operable relationship with said at least one conductor pin for biasing said at least one conductor pin toward said non-conducting position;

a locking mechanism for holding said at least one conductor pin in said conducting position against said bias of said at least one spring; and

a surging mechanism for moving said at least one conductor pin to said conducting position, said surging mechanism including;

a handle;

a gear coupled to said handle; and

a rack meshingly engaging said gear, said rack being operably secured to said at least one conductor pin.

2. The disconnect switch of claim 1 further comprising:

a release mechanism for releasing said locking mechanism.

3. The disconnect switch of claim 2 wherein said release mechanism further comprises:

said handle; and

a cam coupled to said handle operatively engaging said locking mechanism.

4. The disconnect switch of claim 1 further comprising:

a retracting mechanism including said at least one spring for moving said at least one conductor pin to said non-conducting position.

5. The disconnect switch of claim 4 wherein said retracting mechanism further comprises:

a plurality of guide posts;

a plurality of springs concentrically disposed about said guide posts; and

a movable plate in operable relation with said plurality of springs and slidingly coupled to said guide posts, said moveable plate being operably secured to said at least one conductor pin.

6. The disconnect switch of claim 1 wherein said at least one conductor pin further comprises:

a positive conductor pin; and

a negative conductor pin.

7. The disconnect switch of claim 1 wherein said locking mechanism further comprises:

a removable latch engaging a surging mechanism operable for moving said at least one conductor pin to said conducting position.

8. The disconnect switch of claim 1 further comprising:

a first stationary plate;

a second stationary plate disposed opposite said first stationary plate;

a plurality of guide pins extending between said first stationary plate and said second stationary plate;

a moveable plate disposed between said first stationary plate and said second stationary plate, and along said plurality of guide pins;

said at least one conductor pin being coupled at a first end to said moveable plate; and

a plurality of springs concentrically disposed about said guide pins exerting a force on said moveable plate at a first end and exerting a force on said second stationary plate at a second end.

9. A battery disconnect switch for breaking the conductive path of high current in an electric vehicle comprising:

a housing;

a top removably secured to said housing;

a handle rotatable between an on position and an off position secured to said housing;

a lockout flange extending from said handle;

a lockout device removably connected to said flange for preventing said handle from rotating;

an overcenter spring mechanism coupled to said handle for biasing said handle towards said first position when said handle is in said first position and operable for biasing said handle towards said second position when said handle is in said second position;

a power connector secured to said housing;

a positive conductor pin extending from an interior of said housing into said power connector;

a negative conductor pin extending from an interior of said housing into said power connector;

a gear coupled to said handle such that rotation of said handle rotates said gear;

a rack meshingly engaging said gear such that rotation of said gear translates said rack;

a latch removably engaging a notch in said rack;

a cam coupled to said handle, said cam being operable for removing said latch from said notch;

a first stationary plate disposed opposite a second stationary plate supporting a plurality of guide posts therebetween;

a plurality of springs concentrically disposed about said guide pins;

a moveable plate slidingly mounted on said guide pins, said moveable plate being secured to said rack;

said plurality of springs exerting a force on said moveable plate and on said second stationary plate;

an insulator mount secured to said moveable plate, said insulator mount being secured to said positive conductor pin and said negative conductor pin; and

an insulator assembly having a plurality of insulators horizontally disposed therein adjacent said second stationary plate receiving said positive conductor pin and said negative conductor pin therethrough.

10. The battery disconnect switch of claim 9 further comprising:

a rock guard removably secured to said top.

11. The battery disconnect switch of claim 9 further comprising:

a means for displaying an on or off state of said battery disconnect switch.

12. The battery disconnect switch of claim 9 further comprising:

an insulator tip secured to an end of said positive conductor pin; and

an insulator tip secured to an end of said negative conductor pin.

13. A disconnect switch comprising:

at least one conductor pin moveable between a conducting position and a non-conducting position;

at least one spring in operable relationship with said at least one conductor pin for biasing said at least one conductor pin toward said non-conducting position;

a locking mechanism for holding said at least one conductor pin in said conducting position against said bias of said at least one spring;

an insulating mount disposed at a first end of said at least one conductor pin;

a moveable plate coupled to said insulating mount;

at least one guide slidingly engaging said moveable plate and operable for axially guiding said moveable plate; and

an insulator assembly receiving said at least one conductor pin.

14. The disconnect switch of claim 13 wherein said insulator assembly comprises:

a first insulator;

a second insulator disposed atop said first insulator;

a third insulator disposed atop said second insulator;

a first rad socket disposed at an interface of said first insulator and said second insulator; and

a second rad socket disposed at an interface of said second insulator and said third insulator.

15. A disconnect switch comprising:

at least one conductor pin moveable between a conducting position and a non-conducting position;

at least one spring in operable relationship with said at least one conductor pin for biasing said at least one conductor pin toward said non-conducting position;

a locking mechanism for holding said at least one conductor pin in said conducting position against said bias of said at least one spring;

a handle rotatable between a first position and a second position;

a gear coupled to said handle such that rotation of said handle rotates said gear;

a rack meshingly engaging said gear such that rotation of said gear translates said rack;

a first stationary plate disposed opposite a second stationary plate supporting a plurality of guide posts therebetween;

a plurality of springs concentrically disposed about said guide pins;

a moveable plate slidingly engaging said guide pins, said moveable plate being secured to said rack;

said plurality of springs exerting a force on said moveable plate and on said second stationary plate;

an insulator mount secured to said moveable plate, said insulator mount being secured to said at least one conductor pin;

a latch removably engaging a notch in said rack; and

a cam coupled to said handle, said cam being operable for removing said latch from said notch.

16. The disconnect switch of claim 15 further comprising:

a lockout flange extending from said handle; and

a lockout device removably connected to said flange for preventing said handle from rotating.

17. The disconnect switch of claim 15 further comprising:

an overcenter spring mechanism coupled to said handle for biasing said handle towards said first position when said handle is in said first position and operable for biasing said handle towards said second position when said handle is in said second position.