Electrical energy store for a motor vehicle

Patent metadata

Field	Value
Publication number	US-12211982-B2
Application number	US-202217717379-A
Country	US
Kind code	B2
Filing date	Apr 11, 2022
Priority date	Apr 12, 2021
Publication date	Jan 28, 2025
Grant date	Jan 28, 2025

Abstract

An electrical energy store for the storage of electrical energy for a motor vehicle, includes a housing which delimits a receptacle space, storage cells which are arranged in the receptacle space for the storage of the electrical energy, and a line element, which accommodates a through-flow of a coolant fluid for cooling the energy store. The line element has at least one longitudinal region which is routed in the receptacle space and is constituted of a first material having a first melting temperature, and at least one outflow opening that terminates in the receptacle space. A closure element closes the outflow opening and is constituted of a second material, which differs from the first material and has a second melting temperature which is lower than the first melting temperature. The closure element is to be melted for the release of the outflow opening. The storage cells are constituted as solid-body accumulators.

First claim

What is claimed is:

1. An electrical energy store for storing electrical energy for a motor vehicle, comprising:
a housing which delimits a receptacle space;
storage cells which are arranged in the receptacle space for storing the electrical energy;
a line element which accommodates a through-flow of a coolant fluid for cooling the energy store, the line element having at least one longitudinal region which is routed in the receptacle space and is constituted of a first material having a first melting temperature and a first outflow opening which terminates in the receptacle space;
a closure element arranged to close the outflow opening, the closure element being comprised of a second material, which differs from the first material and has a second melting temperature which is lower than the first melting temperature,
wherein the closure element is meltable for releasing the outflow opening, and
wherein the storage cells are solid-body accumulators.

2. The electrical energy store according to claim 1 , further comprising:
an electric heating element assigned to the closure element, by which, for releasing the outflow opening, the closure element is heatable, and meltable accordingly.

3. The electrical energy store according to claim 1 , wherein
the line element comprises at least a second outflow opening, which terminates in the receptacle space, in which a valve is arranged which, relative to the line element, is hydraulically and/or pneumatically moveable from a closed position, in which the second outflow opening is obstructed, to an open position, in which the second outflow opening is released.

4. The electrical energy store according to claim 3 , wherein
the first and second outflow openings are interconnected in a fluidically parallel arrangement.

5. The electrical energy store according to claim 3 , further comprising:
an electronic computing device, by which, via at least one actuating signal, the valve, relative to the line element, is hydraulically and/or pneumatically moveable from the closed position to the open position.

6. The electrical energy store according to claim 1 , wherein
the storage cells are arranged sequentially in the receptacle space along a stacking direction.

7. The electrical energy store according to claim 6 , wherein
between two respective storage cells adjoining along the stacking direction, a respective spacer element is arranged.

8. The electrical energy store according to claim 7 , wherein
the respective spacer element, along the stacking direction, is at least partially spaced from the adjoining storage cells.

9. The electrical energy store according to claim 6 , wherein,
the respective spacer element is constituted of a plastic.

10. An electrical energy store for storing electrical energy for a motor vehicle, comprising:
a housing, which delimits a receptacle space,
storage cells which are arranged in the receptacle space for storing the electrical energy;
a line element which accommodates a through-flow of a coolant fluid for cooling the energy store, the line element comprising at least one longitudinal region which is routed in the receptacle space and at least one outflow opening which terminates in the receptacle space; and
a valve arranged in the outflow opening which, relative to the line element, is hydraulically and/or pneumatically moveable from a closed position, in which the outflow opening is obstructed, to an open position, in which the outflow opening is released.

11. The electrical energy store according to claim 10 , further comprising:
an electronic computing device, by which, via at least one actuating signal, the valve, relative to the line element, is hydraulically and/or pneumatically moveable from the closed position to the open position.

12. The electrical energy store according to claim 10 , wherein
the storage cells are arranged sequentially in the receptacle space along a stacking direction.

13. The electrical energy store according to claim 12 , wherein
between two respective storage cells adjoining along the stacking direction, a respective spacer element is arranged.

14. The electrical energy store according to claim 13 , wherein
the respective spacer element, along the stacking direction, is at least partially spaced from the adjoining storage cells.

15. The electrical energy store according to claim 13 , wherein,
the respective spacer element is constituted of a plastic.

Assignees

• Bayerische Motoren Werke Ag

Inventors

• Koerver Raimund
• Scharner Sebastian

Classifications

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• H01M2200/10

  Temperature sensitive devices · CPC title

• B60K1/04

  of the electric storage means for propulsion · CPC title

• B60L58/26

  by cooling · CPC title

• H01M10/6567

  Liquids · CPC title