CN-122003376-A - Holder and method for manufacturing battery pack using the same

Abstract

Provided are a holder and a method of manufacturing a battery pack using the same. The holder for transporting the battery cell stack assembly to the battery pack case according to the embodiment, the battery cell stack assembly including a plurality of flat plate type battery cells stacked in a horizontal first direction and side members coupled to one side and the other side of the plurality of flat plate type battery cells in the horizontal first direction, may include a base disposed above the battery cell stack assembly, an adsorption part disposed at a lower side of a central region of the base to be adsorbed to the battery cell stack assembly, and a lifting pin protruding below the base and coupled to a clamping hole formed in the side member in a vertical direction.

Inventors

• Li Zaiche
• LI ZHENGYU
• JIN XICHENG
• Cheng Qingpei

Assignees

• 株式会社LG新能源

Dates

Publication Date

20260508

Application Date

20241224

Priority Date

20231226

Claims (19)

1. 1. A gripper configured to carry a cell stack assembly to a battery pack case, the cell stack assembly including a plurality of flat plate cells stacked in a horizontal first direction and side members coupled to one side and the other side of the plurality of flat plate cells in the horizontal first direction, the gripper comprising: A base disposed above the cell stack assembly; an adsorption part disposed below the base in a central region of the base and configured to adsorb the battery cell stack assembly, and And a lifting pin protruding below the base and configured to be coupled to a clamping hole formed in the side member in a vertical direction.
2. 2. The holder according to claim 1, wherein the lifting pin is configured to press the side member toward the plurality of flat plate battery cells in a state of being inserted into the holding hole.
3. 3. The holder of claim 1, wherein the base comprises: A main body part, and An operation section provided on one side and the other side of the main body section in the horizontal first direction, The operation part is configured to move away from or close to the main body part, and The lift pin protrudes below the operating portion and is configured to move together with the operating portion.
4. 4. A holder according to claim 3, further comprising: A driving part fixed to the main body part, and A rotation shaft configured to connect the driving portion and the operating portion, Wherein the operation section is configured to be moved by operation of the driving section.
5. 5. The holder according to claim 1, wherein the holding hole has a rounded quadrilateral shape, and The lifting pin has a rounded quadrangular shape to correspond to the shape of the clamping hole.
6. 6. The holder according to claim 1, wherein the elevation pins are arranged along a horizontal second direction intersecting the horizontal first direction for each of side members coupled to one side and the other side of the plurality of flat plate battery cells in the horizontal first direction.
7. 7. The holder according to claim 6, wherein the lift pins aligned in the horizontal second direction for the side members coupled to one side of the plurality of flat plate battery cells in the horizontal first direction and the lift pins aligned in the horizontal second direction for the side members coupled to the other side of the plurality of flat plate battery cells in the horizontal first direction are provided in a corresponding number to each other.
8. 8. The gripper of claim 6, wherein said lift pins aligned in said horizontal second direction comprise: A first pin, and A second pin having a length that is relatively shorter than the length of the first pin.
9. 9. The holder of claim 8, wherein the first pins and the second pins alternate in the horizontal second direction.
10. 10. The holder according to claim 8, wherein the lift pins aligned in the horizontal second direction for the side members coupled to one side of the plurality of flat plate battery cells in the horizontal first direction and the lift pins aligned in the horizontal second direction for the side members coupled to the other side of the plurality of flat plate battery cells in the horizontal first direction are arranged in such a manner as to be disposed at positions facing each other in the horizontal first direction, respectively, One of the lift pins facing each other in the horizontal first direction is the first pin, and The other is the second pin.
11. 11. The holder of claim 1, wherein the suction portion comprises a pad having an elastic material.
12. 12. A holder according to claim 1, wherein the suction portion is arranged to be formed of a large area foam type material.
13. 13. The holder according to claim 1, wherein the suction portion is formed with a plurality of suction holes.
14. 14. A manufacturing method of a battery pack, the method manufacturing a battery pack by assembling a battery cell stack assembly to a battery pack case by a holder including a base and a lift pin protruding below the base, the battery cell stack assembly including a plurality of flat plate type battery cells stacked in a horizontal first direction and side members coupled to one side and the other side of the plurality of flat plate type battery cells in the horizontal first direction, wherein the side members include: A flat plate-like plate portion, and A mounting part protruding from the plate part in a direction opposite to the plurality of flat plate-type battery cells, and The manufacturing method of the battery pack comprises the following steps: inserting the lifting pin into a clamping hole formed in the mounting part in a vertical direction, wherein the mounting part is coupled to one side and the other side of the plurality of flat plate type battery cells in the horizontal first direction; pressing the side members toward the plurality of flat plate type battery cells with the lift pins by moving the lift pins toward the plurality of flat plate type battery cells, and adsorbing an upper surface of the battery cell stack assembly with an adsorption part provided to the holder; Disposing the cell stack assembly inside the battery pack case by moving the cell stack assembly held by the holder, and The holder is separated from the cell stack assembly.
15. 15. The method of manufacturing a battery pack according to claim 14, wherein the battery pack case comprises: A bottom plate part, and A coupling part protruding above the bottom plate part, and disposed under the mounting part when the battery cell stack assembly is disposed in the battery pack case, The lift pin includes a first pin provided to have a length in which a lower end portion protrudes downward than a lower portion of the mounting portion when the holder holds the battery cell stack assembly, and The coupling part is formed with a groove capable of receiving the first pin protruding more downward than the lower side of the mounting part when the battery cell stack assembly is clamped by the clamp to be disposed in the battery pack case.
16. 16. The manufacturing method of a battery pack according to claim 15, wherein the coupling part is provided between two battery cell stack assemblies adjacently arranged in the horizontal first direction in the battery pack case, and Grooves formed corresponding to each of the two battery cell stack assemblies are formed at positions that do not overlap each other in the horizontal first direction.
17. 17. The method of manufacturing a battery pack according to claim 14, wherein the battery pack case includes a guide pin protruding upward from a bottom plate portion of the battery pack case, The lower part of the side member is formed with a guide hole into which the guide pin is inserted, and The cell stack assembly is disposed such that the guide pin is inserted into the guide hole when the cell stack assembly is moved to be disposed inside the battery pack case.
18. 18. The method of manufacturing a battery pack according to claim 14, wherein the step of pressing the side members toward the plurality of flat plate-type battery cells using the elevation pins is performed prior to the step of adsorbing the upper surface of the battery cell stack assembly using an adsorption part provided to the holder.
19. 19. The method of manufacturing a battery pack according to claim 14, further comprising coupling a coupling member to the coupling portion of the battery pack case by penetrating the coupling member through a mounting hole vertically formed at the mounting portion after the holder is separated from the battery cell stack assembly.

Description

Holder and method for manufacturing battery pack using the same Technical Field The present disclosure relates to a holder and a method of manufacturing a battery pack using the same. In particular, the present disclosure relates to a holder for handling a battery cell stack assembly from which a module frame applied to a conventional battery module is removed to improve space utilization inside a battery pack case and to improve manufacturing process efficiency of a battery pack, and a manufacturing method of a battery pack using the same. Background The present disclosure relates to a holder and a method of manufacturing a battery pack using the same. In particular, the present disclosure relates to a holder for handling a battery cell stack assembly from which a module frame applied to a conventional battery module is removed to improve space utilization inside a battery pack case and to improve manufacturing process efficiency of a battery pack, and a manufacturing method of a battery pack using the same. Disclosure of Invention Technical problem An object of the present disclosure is to provide a process for mounting a battery cell stack assembly in a pressed state to a battery pack case during the manufacturing of the battery pack without being applied to a module frame of a conventional battery module, such that the space utilization inside the battery pack case and the energy density of the battery pack are improved, and to provide a holder that improves the process efficiency of the manufacturing of the battery pack and a manufacturing method of the battery pack using the same. Technical proposal According to one aspect, there is provided a holder configured to carry a cell stack assembly to a battery pack case, the cell stack assembly including a plurality of flat plate cells stacked in a horizontal first direction and side members coupled to one side and the other side of the plurality of flat plate cells in the horizontal first direction, the holder including a base provided above the cell stack assembly, an adsorption part provided below the base in a central region of the base and configured to adsorb the cell stack assembly, and a lifting pin protruding below the base and configured to be coupled to a clamping hole formed in the side member in a vertical direction. Therefore, the space utilization rate inside the battery pack shell can be improved, the energy density of the battery pack is improved, and the manufacturing process efficiency of the battery pack is improved. The lifting pin may be configured to press the side member toward the plurality of flat battery cells in a state of being inserted into the clamping hole. The base may include a main body portion and operation portions provided at one side and the other side of the main body portion in the horizontal first direction, the operation portions may be configured to move away from or close to the main body portion, and the lift pins may protrude below the operation portions and be configured to move together with the operation portions. The clamper may further include a driving part fixed to the main body part, and a rotation shaft configured to connect the driving part and the operating part, and the operating part may be configured to be moved by an operation of the driving part. The clamping hole may have a rounded quadrangular shape, and the lifting pin may have a rounded quadrangular shape to correspond to the shape of the clamping hole. For each of the side members coupled to one side and the other side of the plurality of flat plate type battery cells in the horizontal first direction, the elevation pins may be arranged along the horizontal second direction crossing the horizontal first direction. The lift pins arranged in the horizontal second direction for the side members coupled to one side of the plurality of flat battery cells in the horizontal first direction and the lift pins arranged in the horizontal second direction for the side members coupled to the other side of the plurality of flat battery cells in the horizontal first direction may be provided in numbers corresponding to each other. The lifting pins arranged in the horizontal second direction may include a first pin and a second pin having a length relatively shorter than that of the first pin. The first pins and the second pins may be alternately arranged in the horizontal second direction. The lift pins aligned in the horizontal second direction for the side members coupled to one side of the plurality of flat battery cells in the horizontal first direction and the lift pins aligned in the horizontal second direction for the side members coupled to the other side of the plurality of flat battery cells in the horizontal first direction may be configured in such a manner that the lift pins are respectively disposed at positions facing each other in the horizontal first direction, one of the lift pins facing each other in the horizontal first direction may b