Biasing a battery cell

Patent metadata

Field	Value
Publication number	US-10411313-B2
Application number	US-201715848452-A
Country	US
Kind code	B2
Filing date	Dec 20, 2017
Priority date	May 13, 2014
Publication date	Sep 10, 2019
Grant date	Sep 10, 2019

Abstract

An example electric vehicle battery assembly includes, among other things, a plurality of battery cells, a cold plate, and a cantilevered member to urge the plurality of battery cells toward the cold plate. An electric vehicle battery assembly according to another exemplary aspect of the present disclosure includes a battery cell, a cold plate, and a cantilevered member biasing a first side of the battery cell toward the cold plate to enhance thermal energy transfer between the battery cell and the cold plate. The cantilevered member biases the first side by pressing against an opposite, second side of the battery cell.

First claim

We claim:

1. An electric vehicle battery assembly, comprising:
a plurality of battery cells;
a cold plate; and
a cantilevered member to urge the plurality of battery cells toward the cold plate.

2. The assembly of claim 1 , wherein the cantilevered member urges the plurality of battery cells downward.

3. The assembly of claim 1 , wherein the cantilevered member comprises a rail having a flange extending across an upwardly facing surface of the plurality of battery cells.

4. The assembly of claim 3 , wherein the plurality of battery cells are arranged along an axis, and the flange extends continuously along the axis from a first one of the plurality of battery cells to a second one of the plurality of battery cells.

5. The assembly of claim 3 , wherein the flange is a cantilever from the rail.

6. The assembly of claim 1 , wherein the cantilevered member comprises a plurality of fingers extending from a rail, at least a first one of the fingers to bias a first one of the plurality of battery cells, and a second one of the fingers to bias a second one of the plurality of battery cells.

7. The assembly of claim 6 , wherein the first finger and the second finger extend laterally outward from the rail.

8. The assembly of claim 6 , wherein the first finger and the second finger extend from the rail toward a median of the plurality of battery cells.

9. The assembly of claim 1 , further comprising a battery cover, wherein the cantilevered member is compressed between the battery cover and the battery cells.

10. The assembly of claim 9 , wherein the plurality of battery cells includes a first battery cell and a second battery cell along a first axis, and the first battery cell and a third battery cell along a second axis transverse to the first axis, wherein the cantilevered member extends continuously along the first axis from the first battery cell to the second battery cell, and further extends continuously along the second axis from the first battery cell to the third battery cell.

11. The assembly of claim 1 , wherein the cantilevered member urges a first side of the plurality of battery cells against the cold plate, the cantilevered member pressing against an opposite, second side of the plurality of battery cells.

12. The assembly of claim 1 , wherein the cantilevered member directly contacts the plurality of battery cells.

13. The assembly of claim 1 , wherein the plurality of battery cells are pressed against the cold plate by the cantilevered member such that the battery cell interfaces directly with the cold plate at a contiguous interface.

14. The assembly of claim 1 , wherein an entirety of the plurality of battery cells is situated between the cantilevered member and the cold plate.

15. An electric vehicle battery assembly, comprising:
a plurality of battery cells;
a cold plate; and
a cantilevered member to urge the plurality of battery cells toward the cold plate,
wherein the cold plate is disposed along a first side of the plurality of battery cells and the cantilevered member is disposed along a second side of the plurality of battery cells, the plurality of battery cells sandwiched between the cantilevered member and the cold plate.

16. An electric vehicle battery assembly, comprising:
a battery cell;
a cold plate; and
a cantilevered member biasing a first side of the battery cell toward the cold plate to enhance thermal energy transfer between the battery cell and the cold plate, the cantilevered member biasing the first side by pressing against an opposite, second side of the battery cell.

17. The assembly of claim 16 , wherein the cantilevered member directly contacts the battery cell.

18. The assembly of claim 16 , further comprising a resilient member between a battery cover and a battery cell to provide some of the biasing.

19. The assembly of claim 16 , wherein an entirety of the battery cell is situated between the cantilevered member and the cold plate.

20. The assembly of claim 16 , wherein the cold plate is disposed along the first side battery cell and the cantilevered member is disposed along the second side of the battery cell, the battery cell sandwiched between the cantilevered member and the cold plate.

Assignees

• Ford Global Tech Llc

Inventors

• Janarthanam Suriyaprakash Ayyangar
• Boddakayala Bhaskara
• Gibeau John Paul

Classifications

• H01M50/209

  adapted for prismatic or rectangular cells (H01M50/216 takes precedence) · CPC title

• H01M50/271

  Lids or covers for the racks or secondary casings · CPC title

• H01M10/6554 Primary

  Rods or plates · CPC title

• H01M2220/20

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

• H01M10/613

  Cooling or keeping cold · CPC title