Case of battery, battery, power consumption device, and method and device for producing battery

Patent metadata

Field	Value
Publication number	US-11936027-B2
Application number	US-202017134490-A
Country	US
Kind code	B2
Filing date	Dec 27, 2020
Priority date	Oct 19, 2020
Publication date	Mar 19, 2024
Grant date	Mar 19, 2024

Abstract

Embodiments of the present application provide a case for a battery, a battery, a power consumption device, and a method and device for producing a battery. The case includes: a thermal management component configured to adjust temperature of a battery cell accommodated in the case; a first wall provided with a through hole, the through hole being configured to communicate a gas inside and outside the case; and a condensing component attached to the thermal management component, the condensing component being configured to shield the through hole so as to condense a gas flowing into the inside of the case through the through hole. According to the technical solutions of the embodiments of the present application, the safety of the battery can be enhanced.

First claim

What is claimed is:

1. A case for a battery, comprising:
a thermal management component configured to accommodate a fluid to adjust temperature of a battery cell accommodated in the case;
a first wall provided with a through hole, the through hole being configured to communicate a gas inside and outside the case; and
a condensing component attached to the thermal management component, the condensing component being configured to shield the through hole so as to condense a gas flowing into the inside of the case through the through hole;
wherein the condensing component is disposed on an inner surface of the case, wherein the condensing component comprises a cover-shaped structure, and the cover-shaped structure shields the through hole, wherein the condensing component further comprises a flow channel, and the flow channel is configured to guide condensate in the cover-shaped structure to the thermal management component, wherein the cover-shaped structure has a second opening corresponding to the flow channel, and the second opening is configured to guide the condensate in the cover-shaped structure to the flow channel.

2. The case according to claim 1 , wherein the cover-shaped structure is attached to a region of the first wall around the through hole, and has a first opening for the gas to flow into the case.

3. The case according to claim 2 , wherein the first opening is disposed in a first direction of the cover-shaped structure, and the first direction is an opposite direction of a gravity direction.

4. The case according to claim 2 , wherein the first opening corresponds to a connection of a pipeline of a fire-fighting system in the case, and the first opening is further configured to collect a fluid leaked at the connection when the fluid is leaked at the connection.

5. The case according to claim 1 , wherein portions of the condensing component on both sides of the flow channel are attached to the thermal management component or the first wall.

6. The case according to claim 1 , wherein the second opening is disposed in a second direction of the cover-shaped structure, and the second direction is a gravity direction.

7. The case according to claim 1 , wherein a one-way gravity valve is disposed on the thermal management component, and the one-way gravity valve is configured to discharge the condensate in the flow channel from the case when the gravity of the condensate in the flow channel reaches a threshold.

8. The case according to claim 1 , wherein the case further comprises:
a pressure balancing mechanism configured to balance pressure inside and outside the case.

9. The case according to claim 8 , wherein the first wall comprises a first sub-wall and a second sub-wall, wherein a cavity is formed between the first sub-wall and the second sub-wall, the first sub-wall is an inner wall of the case, the second sub-wall is an outer wall of the case, and the through hole is disposed on the first sub-wall, wherein the pressure balancing mechanism is disposed on the second sub-wall, and a gas flowing into the cavity from the outside of the case through the pressure balancing mechanism flows into the inside of the case through the through hole, wherein the first wall is configured to condense the gas flowing into the cavity through the pressure balancing mechanism in the cavity.

10. The case according to claim 9 , wherein an axis of the through hole does not overlap with an axis of the pressure balancing mechanism.

11. The case according to claim 10 , wherein an orthographic projection of the through hole on the second sub-wall does not overlap with the pressure balancing mechanism.

12. The case according to claim 9 , wherein a fin is disposed in the cavity, and the fin is configured to condense the gas flowing into the cavity through the pressure balancing mechanism.

13. The case according to claim 12 , wherein the fin is disposed in a gas channel from the pressure balancing mechanism to the through hole, wherein the fin is fixed on the first sub-wall, wherein the fin is parallel to a connecting line from a center of the pressure balancing mechanism to a center of the through hole.

14. The case according to claim 1 , wherein the thermal management component intersects with the first wall, a first portion of the condensing component extends along the thermal management component to be attached to the thermal management component, and a second portion of the condensing component extends along the first wall to shield the through hole.

15. A battery comprising:
a plurality of battery cells; and
a case, wherein the plurality of battery cells are accommodated in the case, and the case comprises:
a thermal management component configured to accommodate a fluid to adjust temperature of at least a battery cell of the plurality of battery cells accommodated in the case;
a first wall provided with a through hole, the through hole being configured to communicate a gas inside and outside the case; and
a condensing component attached to the thermal management component, the condensing component being configured to shield the through hole so as to condense a gas flowing into the inside of the case through the through hole;
wherein the condensing component is disposed on an inner surface of the case, wherein the condensing component comprises a cover-shaped structure, and the cover-shaped structure shields the through hole, wherein the condensing component further comprises a flow channel, and the flow channel is configured to guide condensate in the cover-shaped structure to the thermal management component, wherein the cover-shaped structure has a second opening corresponding to the flow channel, and the second opening is configured to guide the condensate in the cover-shaped structure to the flow channel.

16. A power consumption device comprising: a battery, wherein the battery comprises:
a plurality of battery cells; and
a case wherein the plurality of battery cells are accommodated in the case, and the case comprises:
a thermal management component configured to accommodate a fluid to adjust temperature of at least a battery cell of the plurality of battery cells accommodated in the case;
a first wall provided with a through hole, the through hole being configured to communicate a gas inside and outside the case; and
a condensing component attached to the thermal management component, the condensing component being configured to shield the through hole so as to condense a gas flowing into the inside of the case through the through hole;
wherein the condensing component is disposed on an inner surface of the case, wherein the condensing component comprises a cover-shaped structure, and the cover-shaped structure shields the through hole, wherein the condensing component further comprises a flow channel, and the flow channel is configured to guide condensate in the cover-shaped structure to the thermal management component, wherein the cover-shaped structure has a second opening corresponding to the flow channel, and the second opening is configured to guide the condensate in the cover-shaped structure to the flow channel.

Assignees

• Jiangsu Contemporary Amperex Tech Ltd

Inventors

• Zhao Fenggang
• Hong Jiarong
• Huang Xiaoteng
• Wang Wenli
• Xue Cheng
• Yang Haiqi
• Hu Langchao

Classifications

• H01M10/6569 Primary

  Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation (heat pipes H01M10/6552) · CPC title

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01M10/625

  Vehicles · CPC title

• H01M10/6551

  Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings · CPC title

• H01M50/204

  Racks, modules or packs for multiple batteries or multiple cells · CPC title