IP Library › Granted Patent US 12695137
Granted Patent B2
US 12695137 · App. 18/332,870 · Granted Jul 28, 2026

Traction battery pack thermal management system and thermal management method

Inventors: Nathan Lee (Novi, MI); Jie Deng (Novi, MI); Liam E. West (Ferndale, MI)
Assignee: Ford Global Technologies, LLC
H01M10/6568H01M10/625H01M10/6556H01M50/224H01M2220/20
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Quick Facts
Patent No.
US 12695137
App. No.
18/332,870
Granted
Jul 28, 2026
Kind
B2
Abstract

A traction battery pack includes a cell stack, an enclosure assembly housing the cell stack, and stand-offs that space-apart the cell stack from a portion of the enclosure assembly to provide a coolant channel configured to communicate a coolant. The stand-offs can be part of the enclosure assembly or part of an insert separate from the enclosure assembly.

Claims (27)

1 . A traction battery pack, comprising:

a cell stack;

an enclosure assembly housing the cell stack, the enclosure assembly including an enclosure tray and an enclosure cover, the enclosure tray including a bottom wall, the enclosure cover including a top wall; and

a plurality of stand-offs that space-apart the cell stack from a portion of the enclosure assembly to provide a coolant channel configured to communicate a coolant, wherein at least some of the stand-offs in the plurality of stand-offs extend from the bottom wall to the cell stack and at least some of the stand-offs in the plurality of stand-offs extend from the top wall to the cell stack such that the cell stack is spaced from the bottom wall and spaced from the top wall.

2 . The traction battery pack of claim 1 , wherein the coolant is a non-conductive coolant.

3 . The traction battery pack of claim 1 , wherein the plurality of stand-offs are part of the enclosure assembly.

4 . The traction battery pack of claim 3 , wherein the enclosure assembly is a metal or metal alloy.

5 . The traction battery pack of claim 1 , further comprising an insert providing the plurality of stand-offs, the insert separate from the enclosure assembly.

6 . The traction battery pack of claim 1 , wherein the coolant channel opens to the cell stack such that coolant communicated through the coolant channel directly contacts the cell stack.

7 . The traction battery pack of claim 1 , wherein the coolant channel is part of an immersion system for thermal management of the cell stack.

8 . The traction battery pack of claim 1 , wherein the coolant is a liquid coolant.

9 . The traction battery pack of claim 1 , wherein the enclosure assembly includes a first side wall, a second side wall opposite the first side wall, a first end wall, and a second end wall opposite the first end wall.

10 . The traction battery pack of claim 1 , wherein the enclosure assembly includes a first side wall, a second side wall opposite the first side wall, a first end wall, and a second end wall opposite the first end wall, wherein the plurality of stand-offs are arranged in rows that are angled relative to the first side wall, the second side wall, the first end wall, and the second end wall.

11 . The traction battery pack of claim 10 , wherein the rows include stand-offs having a first length, and stand-offs having a second length that is different than the first length.

12 . The traction battery pack of claim 1 , wherein the enclosure assembly includes a first side wall, a second side wall opposite the first side wall, a first end wall, and a second end wall opposite the first end wall, wherein the plurality of stand-offs are arranged parallel to the first end wall and parallel to the second end wall.

13 . A method of managing coolant, comprising:

spacing a cell stack from a portion of an enclosure assembly using a plurality of stand-offs, the spacing providing a coolant channel; and

directing a coolant through the coolant channel to manage thermal energy within the cell stack, wherein the cell stack is sandwiched between stand-offs that extend downward from a top wall of an enclosure cover and stand-offs that extend upward from a bottom wall of an enclosure tray.

14 . The method of claim 13 , further comprising immersion cooling the cell stack using the coolant.

15 . The method of claim 13 , wherein the plurality of stand-offs are part of the enclosure.

16 . The method of claim 13 , wherein the plurality of stand-offs are stamped within the enclosure.

17 . A battery pack, comprising:

a cell stack;

an enclosure assembly housing the cell stack; and

a plurality of stand-offs that space-apart the cell stack from a portion of the enclosure assembly to provide a coolant channel configured to communicate a coolant, wherein the plurality of stand-offs includes stand-offs having a first length, and stand-offs having a second length that is different from the first length.

18 . The battery pack of claim 17 , wherein the enclosure assembly includes a first side wall, a second side wall opposite the first side wall, a first end wall, and a second end wall opposite the first end wall, wherein the plurality of stand-offs are arranged in rows that are angled relative to the first side wall, the second side wall, the first end wall, and the second end wall.

19 . The battery pack of claim 18 , wherein the rows include stand-offs having the first length, and stand-offs having the second length that is different than the first length.