Energy store of a motor vehicle

Patent metadata

Field	Value
Publication number	US-10680296-B2
Application number	US-201615574153-A
Country	US
Kind code	B2
Filing date	May 4, 2016
Priority date	May 15, 2015
Publication date	Jun 9, 2020
Grant date	Jun 9, 2020

Abstract

An energy store of a motor vehicle may include at least one battery cell and a fluid channel having a temperature control fluid that may control a temperature of the at least one battery cell. The fluid channel may be defined by a fluid channel arrangement having two walls and a plurality of spacers arranged therebetween. The plurality of spacers may be configured for a needs-based temperature control of the at least one battery cell. The plurality of spacers may be arranged so that a coolant flow is conducted directly to a hot spot of the at least one battery cell. At least one of the two walls may comprise an organic sheet and may be connected, via glue or welding, to the plurality of spacers.

First claim

The invention claimed is:

1. An energy store of a motor vehicle comprising:
at least one battery cell;
a fluid channel including a temperature control fluid configured to control a temperature of the at least one battery cell;
wherein the fluid channel is defined by a fluid channel arrangement having two walls and a plurality of spacers arranged therebetween, wherein the plurality of spacers are configured for a needs-based temperature control of the at least one battery cell, wherein the plurality of spacers are arranged so that a coolant flow is conducted directly to a hot spot of the at least one battery cell;
wherein at least one of the two walls comprises an organic sheet and is connected, via glue or welding, to the plurality of spacers;
wherein at least some of the plurality of spacers are arranged within the fluid channel in direct contact with one another along the at least one wall connected to the plurality of spacers and define a flow-guiding contour;
wherein each spacer of the plurality of spacers has an outer surface extending between the two walls delimiting an outer contour of the spacer therebetween; and
wherein the outer surface of each of the at least some of the plurality of spacers abuts against the outer surface of another one of the at least some of the plurality of spacers.

2. The energy store according to claim 1 , wherein at least one of the two walls and at least one of the plurality of spacers comprise an electrically insulating material.

3. The energy store according to claim 1 , wherein the two walls are closely connected to one another on an edge side directly or indirectly via an edging element.

4. The energy store according to claim 1 , wherein at least one of the plurality of spacers is a tube section.

5. The energy store according to claim 1 , wherein at least one of the plurality of spacers is a bushing.

6. The energy store according to claim 1 , wherein the outer contour of at least one of the plurality of spacers is a non-round outer contour.

7. The energy store according to claim 6 , wherein the non-round outer contour of the at least one of the plurality of spacers is an oval outer contour.

8. The energy store according to claim 6 , wherein the non-round outer contour of the at least one of the plurality of spacers is an angled outer contour.

9. The energy store according to claim 1 , further comprising a metallic housing at least partially surrounding the fluid channel arrangement, wherein the fluid channel arrangement is disposed between the at least one battery cell and the metallic housing, and the at least one wall comprising the organic sheet is arranged on the metallic housing and connected via the plurality of spacers to the other of the two walls.

10. The energy store according to claim 1 , wherein the at least one battery cell comprises a plurality of battery cells where two adjacent battery cells of the plurality of battery calls are arranged spaced apart from one another, and wherein at least some of the plurality of spacers are structured and arranged to direct the coolant flow from the fluid channel to an interspace between the two adjacent battery cells for the needs-based temperature control.

11. The energy store according to claim 10 , wherein the plurality of spacers are arranged in the fluid channel at predetermined positions corresponding to predefined sites of individual battery cells having the hot spot to provide a targeted flow guidance and locally different cooling to each of the plurality of battery cells.

12. The energy store according to claim 1 , wherein in an operating state the at least one battery cell has at least one hot surface including at least one area having a locally elevated temperature relative to a temperature of a surrounding area of the at least one hot surface, and wherein the at least one area defines the hot spot.

13. The energy store according to claim 1 , wherein the plurality of spacers are each structured as a bushing.

14. The energy store according to claim 1 , wherein:
the plurality of spacers includes a first subset of spacers and a second subset of spacers;
the first subset of spacers are arranged within the fluid channel spaced apart from one another along the at least one wall connected to the plurality of spacers such that the first subset of spacers do not directly contact one another; and
the second subset of spacers is defined by the at least some of the plurality of spacers arranged in direct contact with one another.

15. The energy store according to claim 1 , wherein the outer surface of each of the at least some of the plurality of spacers abuts against the outer surface of another one of the at least some of the plurality of spacers from a first wall of the at least two walls to a second wall of the at least two walls for forming the flow-guiding contour.

16. The energy store according to claim 1 , wherein at least one of the plurality of spacers is an individual spacer disposed in a singular arrangement spaced apart from a surrounding perimeter of the at least one wall, and wherein the at least some of the plurality of spacers are arranged one after another in succession such that at least a portion of the outer surface of each of the at least some of the plurality of spacers form the flow-guiding contour.

17. An energy store of a motor vehicle comprising:
at least one battery cell;
a fluid channel including a temperature control fluid configured to control a temperature of the at least one battery cell;
wherein the fluid channel is defined by a fluid channel arrangement having two walls and a plurality of spacers arranged therebetween, wherein the plurality of spacers are configured for a needs-based temperature control of the at least one battery cell, wherein the plurality of spacers are arranged so that a coolant flow is conducted directly to a hot spot of the at least one battery cell;
wherein at least one of the two walls comprises an organic sheet and is connected, via glue or welding, to the plurality of spacers;
wherein at least some of the plurality of spacers are arranged within the fluid channel in direct contact with one another along the at least one wall connected to the plurality of spacers and define a flow-guiding contour;
wherein each of the at least some of the plurality of spacers have a non-round outer contour defined by an outer surface extending between the two walls delimiting the spacer therebetween; and
wherein the outer surface of each of the at least some of the plurality of spacers abuts against the outer surface of another one of the at least some of the plurality of spacers.

18. A method for producing an energy store comprising:
providing at least one battery cell and a fluid channel arrangement having two walls and a plurality of spacers arranged therebetween configured for a needs-based temperature control of the at least one battery cell, wherein at least one of the two walls comprises an organic sheet and is connected, via glue or welding, to the plurality of spacers;
determining a temperature distribution of the at least one battery cell at different operating states and identifying at least one hot spot of the at least one battery cell;
calculating a fluid flow in the fluid channel arrangement, optimally controlling a temperature of the determined temperature distribution of the at least one battery cell;
producing a template from the calculated fluid flow for the arrangement of the plurality of spacers such that the plurality of spacers conduct the fluid flow directly to the at least one hot spot of

Assignees

• Mahle Int Gmbh

Inventors

• Moser Michael
• Weinmann Dominique

Classifications

• H01M10/6556

  Solid parts with flow channel passages or pipes for heat exchange (closed pipes H01M10/6552) · CPC title

• H01M10/6568

  characterised by flow circuits, e.g. loops, located externally to the cells or cell casings · CPC title

• F28F9/0212

  the partitions being separate elements attached to header boxes · CPC title

• H01M2/1072

  Electricity · mapped topic

• H05K7/20

  Modifications to facilitate cooling, ventilating, or heating · CPC title