Battery module and battery system with battery cells separated by a heat-resistant separator plate

Patent metadata

Field	Value
Publication number	US-12424697-B2
Application number	US-202218078176-A
Country	US
Kind code	B2
Filing date	Dec 9, 2022
Priority date	Dec 10, 2021
Publication date	Sep 23, 2025
Grant date	Sep 23, 2025

Abstract

A battery module includes a module housing, a cell stack having a plurality of battery cells including a rectangular surface and a cell thickness perpendicular thereto, and a separator plate. A laminar extension of the separator plate corresponds to at least the rectangular surface area of a respective battery cell. The separator plate is arranged between two adjacent battery cells of the at least one cell stack. On at least one separator plate side of the at least one separator plate between a lower and an upper edge of the at least one separator plate, at least two strip-shaped compression pads are arranged. The at least two strip-shaped compression pads directly abut the battery cell such that, longitudinally between the at least two strip-shaped compression pads, the at least one separator plate, and the respective battery cell, a respective flow channel is formed for a temperature control fluid.

First claim

What is claimed is:

1. A battery module comprising:
a module housing,
at least one cell stack having a plurality of battery cells each comprising a rectangular surface and a cell thickness perpendicular thereto in a stacking direction,
at least one separator plate formed from a heat-resistant material, wherein a laminar extension of the at least one separator plate corresponds to at least the rectangular surface area of a respective battery cell, wherein the at least one separator plate is arranged between two adjacent battery cells of the at least one cell stack, and
at least two strip-shaped compression pads arranged on at least one separator plate side of the at least one separator plate between a lower edge and an upper edge of the at least one separator plate,
wherein the at least two strip-shaped compression pads directly abut the battery cell facing the at least one separator plate side having the at least two strip-shaped compression pads, such that, longitudinally between the at least two strip-shaped compression pads, the at least one separator plate, and the respective battery cell, a respective flow channel is disposed for holding a temperature control fluid,
wherein, during operation, the battery module is perfusable or perfused with the temperature control fluid flowing through the respective flow channel.

2. The battery module according to claim 1 , wherein the heat-resistant material of the at least one separator plate additionally has at least one of the following properties: combustion-resistant, burst-resistant, fracture-resistant, compression-resistant.

3. The battery module according to claim 1 , wherein the heat-resistant material of the at least one separator plate is selected from one of the following materials: steel, fiber-reinforced plastic, ceramic, fiber-reinforced and ceramic.

4. The battery module according to claim 1 , wherein the at least two strip-shaped compression pads are adhered to the at least one separator plate.

5. The battery module according to claim 1 , wherein at least one edge of the at least one separator plate abuts the module housing.

6. The battery module according to claim 1 , wherein the strip-shaped compression pads are arranged in a strip pattern on the at least one separator plate.

7. The battery module according to claim 1 , wherein, between at least one respective wall of the module housing terminating the at least one cell stack in the stacking direction, a respective separator plate of the at least one separator plate is arranged, wherein the at least two strip-shaped compression pads are arranged only between the respective separator plate and the respective battery cell terminating at the at least one cell stack.

8. A motor vehicle comprising the battery module of claim 1 .

9. A battery system comprising a temperature control system and at least one battery module according to claim 1 , wherein the temperature control system is configured so as to provide a perfusion through the at least one battery module with a dielectric temperature control fluid.

10. In a battery module including (i) a module housing, (ii) at least one cell stack having a plurality of battery cells each comprising a rectangular surface and a cell thickness perpendicular thereto in a stacking direction, (iii) at least one separator plate formed from a heat-resistant material, wherein a laminar extension of the at least one separator plate corresponds to at least the rectangular surface area of a respective battery cell, wherein the at least one separator plate is arranged between two adjacent battery cells of the at least one cell stack, and (iv) at least two strip-shaped compression pads arranged on at least one separator plate side of the at least one separator plate between a lower edge and an upper edge of the at least one separator plate, wherein the at least two strip-shaped compression pads directly abut the battery cell facing the at least one separator plate side having the at least two strip-shaped compression pads, such that, longitudinally between the at least two strip-shaped compression pads, the at least one separator plate, and the respective battery cell, a respective flow channel is disposed for holding a temperature control fluid, wherein, during operation, the battery module is perfusable or perfused with the temperature control fluid flowing through the respective flow channel, a method of assembling the battery module comprises:
(i) adhering the at least two strip-shaped compression pads on the at least one separator plate with a heat-resistant adhesive in order to form a composite structure.

11. The method according to claim 10 , wherein the composite structure is adhered with a heat-resistant adhesive:
(i) at contact locations of the strip-shaped compression pads with the respective battery cells, and
(ii) at contact locations of the at least one separator plate with the module housing when the battery module is assembled.

Assignees

• Porsche Ag

Inventors

• Kellner Philipp
• Volkmer Christopher
• Berendes Philipp

Classifications

• H01M10/0481

  Compression means other than compression means for stacks of electrodes and separators · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M50/242

  adapted for protecting batteries against vibrations, collision impact or swelling · CPC title

• H01M10/6568

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

• H01M10/613 Primary

  Cooling or keeping cold · CPC title