Fixture unit for holding a prismatic battery cell

Patent metadata

Field	Value
Publication number	US-12246339-B2
Application number	US-202318116371-A
Country	US
Kind code	B2
Filing date	Mar 2, 2023
Priority date	Apr 5, 2022
Publication date	Mar 11, 2025
Grant date	Mar 11, 2025

Abstract

A fixture unit for holding a prismatic battery cell during a coating step and during a curing step, including: at least one skirt element, which is movable between a coating position and a curing position and wherein the skirt element is configured to shield an area of the battery cell in the coating position and to un-shield the area of the battery cell in the curing position; and at least one grip element configured to hold the battery cell during the coating step and the curing step, wherein the grip element is configured to hold the battery cell in the area that is shielded by the skirt element in its coating position.

First claim

The invention claimed is:

1. A fixture unit for holding a prismatic battery cell during a coating step and during a curing step, comprising:
at least one skirt element, which is movable between a coating position and a curing position and wherein the skirt element is configured to shield an area of the battery cell in the coating position and to un-shield the area of the battery cell in the curing position; and
at least one grip element configured to hold the battery cell during the coating step and the curing step, wherein the grip element is configured to hold the battery cell in an area that is shielded by the skirt element in its coating position such that the at least one skirt element is configured to shield the at least one grip element in the coating position.

2. The fixture according to claim 1 , wherein in its coating position, the skirt element is in contact with the battery cell and in its curing position, the skirt element is positioned at a distance from the battery cell.

3. The fixture unit according to claim 1 , wherein the grip element is provided by at least one tong element comprising a receptacle which is configured to house and/or support a protruding terminal element of the battery cell.

4. The fixture unit according to claim 1 , wherein the grip element comprises at least one gripper tong element configured to grip a protruding terminal element of the battery cell.

5. The fixture unit according to claim 1 , wherein the grip element comprises at least one suction mechanism comprising at least one suction cup configured to hold the battery cell.

6. The fixture unit according to claim 1 , wherein the grip element comprises at least one block element configured to be positioned between two terminal elements of the battery cell such that the battery cell is held or supported by the at least one block element.

7. The fixture unit according to claim 1 , wherein the grip element comprises at least one gripper block element configured to be positioned between two terminal elements of the battery cell such that the battery cell is gripped by the at least one gripper block element.

8. The fixture unit according to claim 1 , wherein the fixture unit comprises at least two grip elements.

9. The fixture unit according to claim 1 , wherein the skirt element is configured to mask a rectangular area of a side of the battery cell, where the terminal element and other features of the battery cell are arranged.

10. The fixture unit according to claim 1 , wherein the skirt element has a rectangular cross section having a length between 60 mm and 540 mm, and a width between 10 mm and 50 mm, and/or the fixture unit is configured to hold a prismatic battery cell having a length between 100 mm and 600 mm, a width between 10 mm and 50 mm, and a height between 80 mm and 150 mm.

11. The fixture unit according to claim 1 , further comprising a moving mechanism configured to move the skirt element between the coating position and the curing position.

12. A method for coating a prismatic battery cell, comprising:
providing a battery cell held by a fixture unit, comprising:
at least one skirt element, which is movable between a coating position and a curing position and wherein the skirt element is configured to shield an area of the battery cell in the coating position and to un-shield the area of the battery cell in the curing position; and
at least one grip element configured to hold the battery cell during the coating step and the curing step, wherein the grip element is configured to hold the battery cell in an area that is shielded by the skirt element in its coating position;

positioning the skirt element in a coating position such that the at least one skirt element shields the at least one grip element;
coating the battery cell with a coating;
positioning the skirt element in a curing position; and
curing the coating.

Assignees

• Volvo Car Corp

Inventors

• Werberg Leopold
• Schmidt Marcus

Classifications

• B05D1/02

  performed by spraying · CPC title

• B05D3/067

  Curing or cross-linking the coating · CPC title

• H01M2220/20

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

• H01M50/1245

  characterised by the external coating on the casing · CPC title

• H01M50/103 Primary

  prismatic or rectangular (H01M50/109, H01M50/11 take precedence) · CPC title