High-voltage accumulator

Patent metadata

Field	Value
Publication number	US-11600873-B2
Application number	US-201916577165-A
Country	US
Kind code	B2
Filing date	Sep 20, 2019
Priority date	Mar 22, 2017
Publication date	Mar 7, 2023
Grant date	Mar 7, 2023

Abstract

A high-voltage accumulator includes at least one battery module which has at least two battery cells and a cooling module through which a coolant or refrigerant flows and which is provided for cooling the battery cells. The cooling module has a first fluid connection point for coolant or refrigerant. A first fluid channel is provided, which is fluidically connected to the first fluid connection point. The first fluid channel has a cross-section that deviates from a circular shape.

First claim

What is claimed is:

1. A high-voltage accumulator, comprising:
a battery module, wherein the battery module includes:
at least two battery cells; and
a cooling plate which has a flow channel disposed within the cooling plate and wherein the flow channel is flowed through by a coolant or a refrigerant which cools the at least two battery cells;
wherein the cooling plate has a first fluid connection by way of which the coolant or the refrigerant flows into the flow channel; and

a first fluid channel, wherein the first fluid channel is in flow connection with the first fluid connection, wherein the coolant or the refrigerant is supplied to the flow channel of the cooling plate by the first fluid channel via the first fluid connection, and wherein the first fluid channel has a cross section that deviates from a circular shape;
wherein the cooling plate has a second fluid connection, wherein the coolant or the refrigerant flows out of the cooling plate via the second fluid connection, and wherein the second fluid connection is in flow connection with a second fluid channel which has a cross section that deviates from the circular shape;
wherein the first fluid channel and the second fluid channel are disposed above and extend across the at least two battery cells;
wherein the first fluid channel is in flow connection with the first fluid connection via a first connecting channel and wherein the second fluid channel is in flow connection with the second fluid connection via a second connecting channel; and
wherein the first connecting channel and the second connecting channel are formed by respective channels provided in a pressure plate of the battery module or are formed by respective lines disposed in the respective channels.

2. The high-voltage accumulator according to claim 1 , wherein the cross section of the first fluid channel is substantially rectangular.

3. The high-voltage accumulator according to claim 1 , wherein the cross section of the second fluid channel is substantially rectangular.

4. The high-voltage accumulator according to claim 2 , wherein the cross section of the second fluid channel is substantially rectangular.

5. The high-voltage accumulator according to claim 1 , wherein a height of the respective cross section that is measured in a direction perpendicular to a standing surface of the at least two battery cells on the cooling plate is less than a width of the respective cross section measured in a direction perpendicular thereto.

6. The high-voltage accumulator according to claim 1 , wherein the battery module has two pressure plates which are clamped together via a tensioning element and wherein the at least two battery cells are clamped between the two pressure plates.

7. The high-voltage accumulator according to claim 1 further comprising a second battery module which has a second cooling plate with a second first fluid connection in flow connection with a second first fluid channel.

8. The high-voltage accumulator according to claim 1 , wherein a connection flange protrudes laterally from the first fluid channel and wherein the connection flange is in flow connection with the first fluid connection.

9. The high-voltage accumulator according to claim 7 , wherein the second cooling plate has an additional second fluid connection in flow connection with an additional second fluid channel.

10. The high-voltage accumulator according to claim 1 , wherein a connection flange protrudes laterally from the second fluid channel and wherein the connection flange is in flow connection with the second fluid connection.

11. The high-voltage accumulator according to claim 9 , wherein the battery modules are arranged in a pair and wherein the respective first fluid channels and second fluid channels are disposed in a region between the battery modules.

12. The high-voltage accumulator according to claim 1 , wherein the first fluid channel is metal or plastic.

13. The high-voltage accumulator according to claim 1 , wherein the second fluid channel is metal or plastic.

14. A vehicle with a high-voltage accumulator according to claim 1 .

Assignees

• Bayerische Motoren Werke Ag

Inventors

• Einoegg Florian
• Huber Michael
• Feddersen Jan
• Ring Andreas

Classifications

• B60L58/26

  by cooling · CPC title

• B60L50/60

  using power supplied by batteries (in combination with fuel cells B60L50/75) · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M10/625

  Vehicles · CPC title

• H01M10/613

  Cooling or keeping cold · CPC title