CN-122025966-A - Battery cell tray and method for manufacturing same

Abstract

A battery cell tray and a method for manufacturing the battery cell tray are disclosed. The battery cell tray includes a bottom tray configured to receive a plurality of battery cells thereon, and an inner tray coupled to the bottom tray and having a partition wall between regions where adjacent battery cells of the plurality of battery cells are to be received.

Inventors

• DING YONGXUAN
• JIN XIYAN
• HE CHANGYOU
• CUI YINGXIAN
• An Rongzhen
• ZHANG YINHU

Assignees

• 三星SDI株式会社
• 梦想化工科技株式会社

Dates

Publication Date

20260512

Application Date

20251111

Priority Date

20241112

Claims (20)

1. 1. A battery cell tray comprising: a base tray configured to accommodate a plurality of battery cells thereon, and An inner tray coupled to the bottom tray and having a partition wall between regions to accommodate adjacent battery cells of the plurality of battery cells.
2. 2. The battery cell tray of claim 1, wherein the inner tray comprises: A support coupled to the bottom tray at one side of the bottom tray defined by the partition wall for supporting each individual battery cell therein while accommodating the plurality of battery cells, and A first ventilation slot is adjacent to the support.
3. 3. The battery cell tray of claim 1, wherein the bottom tray has a plurality of holes below an area where the plurality of battery cells are to be positioned on the bottom tray.
4. 4. The battery cell tray of claim 3, wherein the plurality of apertures comprises: a mounting hole at the center of the bottom of the space defined by the partition wall to receive each individual battery cell for receiving each individual battery cell therethrough, and A first vent hole defining a space for ventilation at a corner of the bottom of the space defined by the partition wall to accommodate each individual battery cell.
5. 5. The battery cell tray of claim 1, wherein: The bottom tray has a first bolt connection portion including a first bolt hole, the inner tray is bolt-connected to the bottom tray at the first bolt hole at a portion below the plurality of battery cells mounted on the bottom tray, and The inner tray has a second bolt connection portion including a second bolt hole, and the second bolt connection portion is bolt-connected to the first bolt connection portion of the bottom tray at the second bolt hole.
6. 6. The battery cell tray of claim 5, wherein: The first bolt connection part is provided with a centering protrusion for centering the bottom tray and the inner tray, and The second bolt connection portion has a centering groove coupled to the centering protrusion.
7. 7. The battery cell tray of claim 5, wherein: The first bolt connection portion has a plurality of second ventilation holes surrounding the first bolt hole, and The second bolt connection portion has a plurality of third ventilation holes surrounding the second bolt hole.
8. 8. The battery cell tray of claim 1, wherein the base tray has a securing member formed to secure the inner tray to a contact on an inner side of the base tray.
9. 9. The battery cell tray of claim 1, wherein the bottom tray has a cross-shaped stiffening wall at its center to support the loading of the plurality of battery cells.
10. 10. The battery cell tray of claim 9, wherein the reinforcement wall has a second ventilation slot for ventilation at a portion of an upper portion thereof.
11. 11. A method of manufacturing a battery cell tray, the method comprising: Manufacturing a bottom tray configured to receive a plurality of battery cells thereon; manufacturing an inner tray configured to form a partition between regions where the plurality of battery cells are to be accommodated, and The bottom tray and the inner tray are coupled together.
12. 12. The method of claim 11, wherein the manufacturing the inner tray comprises: Forming a support coupled to the bottom tray at one side of the bottom tray defined by the partition wall for accommodating each individual battery cell therein while supporting the plurality of battery cells, and A first ventilation slot is formed adjacent to the support.
13. 13. The method of claim 11, wherein the manufacturing the bottom tray comprises forming a plurality of holes below an area where the plurality of battery cells are to be positioned on the bottom tray.
14. 14. The method of claim 13, wherein the plurality of holes comprises: a mounting hole at the center of the bottom of the space defined by the partition wall in which each individual battery cell is mounted for accommodating each individual battery cell therethrough, and A first vent configured to define a space for ventilation at a corner of the bottom of the space defined by the partition wall for accommodating each individual battery cell therein.
15. 15. The method according to claim 11, wherein: The manufacturing of the bottom tray includes forming a first bolting portion including a first bolt hole, the inner tray being bolted to the bottom tray at the first bolt hole at a portion below an area where the plurality of battery cells are to be placed on the bottom tray, and The manufacturing of the inner tray includes forming a second bolting portion including a second bolt hole where the second bolting portion is bolted to the first bolting portion of the bottom tray.
16. 16. The method according to claim 15, wherein: the forming the first bolting portion includes forming a centering boss to center the bottom tray and the inner tray, and The forming the second bolt connection includes forming a centering groove coupled to the centering protrusion.
17. 17. The method according to claim 15, wherein: The forming the first bolt connection portion includes forming a plurality of second ventilation holes around the first bolt hole, and The forming the second bolt connection includes forming a plurality of third vent holes around the second bolt hole.
18. 18. The method of claim 11, wherein the manufacturing the bottom tray includes forming a fastener to secure the inner tray to a contact on an inner side of the bottom tray.
19. 19. The method of claim 11, wherein the manufacturing the bottom tray includes forming a cross-shaped reinforcing wall in a center of the bottom tray to support loading of the plurality of battery cells.
20. 20. The method of claim 19, wherein the forming the cross-shaped stiffening wall includes forming a second ventilation slot for ventilation at a portion of an upper portion of the stiffening wall.

Description

Battery cell tray and method for manufacturing same Cross Reference to Related Applications The present application claims priority and benefit from korean patent application No. 10-2024-0160592 filed in the korean intellectual property office on day 11 and 12 of 2024, the entire disclosure of which is incorporated herein by reference. Technical Field Aspects of embodiments of the present disclosure relate to a battery cell tray and a method for manufacturing the battery cell tray. Background Unlike primary batteries, which are not designed to be (re) charged, secondary batteries are designed to be discharged and re-charged. Low-capacity secondary batteries are used for small-sized portable electronic devices such as smart phones, function phones, notebook computers, digital cameras, and video cameras, and large-capacity secondary batteries are widely used as power sources for driving motors such as hybrid vehicles or electric vehicles and for electric power storage. The secondary battery generally includes an electrode assembly including (or consisting of) a positive electrode and a negative electrode, a case accommodating the electrode assembly, a terminal part connected to the electrode assembly, and the like. After manufacturing, the lithium secondary battery is activated by performing charge and discharge cycles a plurality of times, which is called a formation process or an activation process. A charge/discharge device is used for the activation process, which can charge and discharge a plurality of monomers together (or simultaneously) to improve productivity in a mass production process of the secondary battery. Secondary batteries are manufactured through various manufacturing processes, and when various processes such as an electrolyte injection process and an activation process are performed or battery cells are transferred between the processes, a tray capable of storing a plurality of battery cells is used to easily and safely handle them. Generally, a battery cell tray has a plurality of battery trays, each of which has a shape corresponding to that of a battery cell or battery pack to be stored, thereby facilitating mass production of the battery. Conventional battery cell trays have an optimized structure that facilitates cooling air flow circulation to reduce heat generation during charging and discharging of the cells while being sufficiently rigid, which conflicts with the need for adequate air flow. The above information disclosed in this background section is for enhancement of understanding of the background of the present disclosure and, therefore, it may contain information that does not form a related (or prior) art. Disclosure of Invention Embodiments of the present disclosure provide a battery cell tray having a separation structure including a bottom tray and an inner tray, and a method for manufacturing the battery cell tray. However, the aspects and features of the present disclosure are not limited to those described above, and other aspects and features of the present disclosure will be clearly understood by those skilled in the art from the following description of the present disclosure. According to an embodiment of the present disclosure, a battery cell tray includes a base tray configured to receive a plurality of battery cells thereon, and an inner tray coupled to the base tray and having a partition wall between regions of adjacent battery cells of the plurality of battery cells to be received. The inner tray may include a support coupled to the bottom tray at one side of the bottom tray defined by the partition wall for supporting each individual battery cell while accommodating the plurality of battery cells therein, and a first ventilation groove adjacent to the support. The bottom tray may have a plurality of holes under an area where the plurality of battery cells are to be placed on the bottom tray. The plurality of holes may include a seating hole at the center of the bottom of the space defined by the partition wall to receive each individual battery cell for receiving each individual battery cell therethrough, and a first vent hole defining a space for ventilation at a corner of the bottom of the space defined by the partition wall to receive each individual battery cell. The bottom tray may have a first bolt connection portion including a first bolt hole at which the inner tray is bolt-connected to the bottom tray at a portion below the plurality of battery cells disposed on the bottom tray, and the inner tray may have a second bolt connection portion including a second bolt hole at which the second bolt connection portion is bolt-connected to the first bolt connection portion of the bottom tray. The first bolt connection part may have a centering protrusion to center the bottom tray and the inner tray, and the second bolt connection part may have a centering groove coupled to the centering protrusion. The first bolt connection portion may have a plurality of