CN-224204302-U - Battery cell shell assembly and battery cell

Abstract

The utility model relates to a battery cell shell assembly and a battery cell, wherein the assembly comprises a connecting sheet and an insulating piece, the insulating piece is arranged between the connecting sheet and a pole group, a pole lug penetrating hole groove is formed in the insulating piece, and a pole lug on the pole group can penetrate through the pole lug penetrating hole groove and is connected with the connecting sheet. Through add the utmost point ear insulating part between connection piece and utmost point group, not only can guarantee that utmost point group and connection piece are insulating, can also avoid in electric core assembly process, the welding slag easily falls into the inside problem of electric core with the welding process of connection piece.

Inventors

• ZUO FANFAN
• LIU FENG
• CHEN BO
• WEI SIWEI
• JIANG ZHIYI

Assignees

• 江苏天合储能有限公司

Dates

Publication Date

20260505

Application Date

20250401

Claims (10)

1. 1. The battery cell shell assembly is characterized by comprising a connecting sheet and an insulating piece, wherein the insulating piece is arranged between the connecting sheet and a pole group, a pole lug penetrating hole groove is formed in the insulating piece, and a pole lug on the pole group can penetrate through the pole lug penetrating hole groove and is connected with the connecting sheet.
2. 2. The cell housing assembly of claim 1, further comprising an end cap and a housing, the housing comprising an integrated middle portion and a bottom plate, an end opposite the bottom plate being provided with an opening at which the end cap is mounted, the end cap having a post with a post hole disposed thereon exposing the connection tab, the tabs on the pole group being extendable through the tab insertion hole slot between the end cap and the insulator and connected to the connection tab, the connection tab being located between the insulator and the end cap.
3. 3. The cell housing assembly of claim 1, further comprising an end cap and a housing, the housing comprising a middle portion, opposite ends of the middle portion being provided with openings, two end caps being mounted at the two openings, respectively, the end cap having a post with a post hole, the post hole exposing the connecting tab, the tabs on the pole set being capable of extending between the end cap and the insulating member through the tab insertion hole slot and connecting with the connecting tab, the connecting tab being located between the insulating member and the end cap.
4. 4. The battery cell housing assembly according to claim 1, wherein the insulating member comprises an insulating body, a first side, a second side and a third side, the first side and the third side are located on opposite sides of the insulating body, the second side is arranged at one end of the insulating body and respectively connected with adjacent ends of the first side and the third side, and tab penetrating holes are formed between the first side and the insulating body and between the third side and the insulating body.
5. 5. The cell housing assembly of claim 4, wherein the insulator includes an open end disposed opposite the second side and exposing an end of the tab insertion aperture.
6. 6. The cell housing assembly of claim 1, wherein the tabs comprise positive and negative tabs that are maintained at a predetermined spacing.
7. 7. A battery cell, characterized by comprising the battery cell housing assembly according to any one of claims 1-6, and further comprising a pole group, wherein the pole group is mounted inside the battery cell housing assembly, and a tab of the pole group passes through the tab penetrating hole slot to be connected with the connecting sheet, and the bottom of the pole is connected with the connecting sheet through a pole hole in the battery cell housing assembly.
8. 8. The cell of claim 7, wherein the pole group is provided with an L-shaped tab, and a portion of the tab passes through the tab insertion hole slot and is welded to the connecting piece.
9. 9. The cell of claim 7, wherein the tabs comprise positive and negative tabs disposed at intervals and ultrasonically welded to the positive and negative connection tabs, respectively.
10. 10. The cell of claim 7, wherein the pole group comprises 2 sub-pole groups arranged in parallel, the sub-pole groups are respectively provided with a positive pole tab and a negative pole tab, and one positive pole connection piece and one negative pole connection piece are respectively connected with the positive pole tab and the negative pole tab in the 2 sub-pole groups.

Description

Battery cell shell assembly and battery cell Technical Field The utility model relates to the technical field of batteries, in particular to a battery cell shell assembly and manufacturing of a battery cell. Background With the global growing demand for renewable energy and new energy automobiles, battery technology, and in particular, the design and manufacture of electrical cells, is becoming increasingly important. The performance of the battery cell as a core component of the battery system directly affects the energy density, safety and service life of the whole battery system. In the prior art, the cover housing of the battery cell plays a vital role, which not only protects the electrical components inside the battery cell, but also involves the conductive, insulating and sealing functions of the battery cell. At present, a cell end cover shell commonly adopts a split structure, and when the cell end cover shell is assembled, the end cover and the pole group are assembled into the shell together after being electrically connected through a connecting sheet. In the prior art, after the electrode lug and the connecting sheet are ultrasonically welded in the process of assembling and welding the battery cell, in the process of carrying out laser welding on the connecting sheet and the bottom of the electrode post on the end cover, the generated welding slag possibly causes the risk of internal short circuit of the battery cell because the laser welding mark is positioned in the battery cell. Disclosure of utility model The utility model aims to provide a battery cell shell assembly and a battery cell, and solves the problem that welding slag is introduced to cause internal short circuit of the battery cell because the existing battery cell laser welding mark is positioned in the battery cell. The utility model provides a battery cell shell assembly, which comprises a connecting sheet and an insulating piece, wherein the insulating piece is arranged between the connecting sheet and a pole group, a pole lug penetrating hole groove is formed in the insulating piece, and a pole lug on the pole group can penetrate through the pole lug penetrating hole groove and is connected with the connecting sheet. The novel solar battery pack comprises a cover, a connecting piece, a base plate, an end cover, a terminal post, a terminal lug, a connecting piece and a connecting piece, wherein the cover comprises an integrated middle part and the base plate, an opening is formed in one end of the cover, which is opposite to the base plate, the end cover is installed at the opening, the end cover is provided with the terminal post, the terminal post is provided with the terminal post hole, the connecting piece is exposed out of the terminal post hole, the terminal lug on the terminal group can extend to the position between the end cover and the insulating piece through the terminal lug penetrating hole groove and is connected with the connecting piece, and the connecting piece is located between the insulating piece and the end cover. The novel solar battery pack comprises an end cover and a shell, wherein the shell comprises a middle part, two opposite ends of the middle part are provided with openings, the two end covers are correspondingly arranged at the two openings, the end cover is provided with a pole column, a pole column hole is formed in the pole column, the connecting sheet is exposed out of the pole column hole, a pole lug on the pole group can penetrate through a pole lug penetrating hole groove to extend between the end cover and the insulating piece and is connected with the connecting sheet, and the connecting sheet is located between the insulating piece and the end cover. Further, the insulating piece comprises an insulating body, a first side, a second side and a third side, wherein the first side and the third side are located on two opposite sides of the insulating body, the second side is arranged at one end of the insulating body and is respectively connected with adjacent ends of the first side and the third side, and lug penetrating holes are formed between the first side and the insulating body and between the third side and the insulating body. Further, the insulating member includes an open end disposed opposite the second side and exposing one end of the tab penetrating hole groove. Further, the connection pieces comprise a positive connection piece and a negative connection piece, and the positive connection piece and the negative connection piece keep a preset distance. On the other hand, the utility model also provides a battery cell, which comprises the battery cell shell assembly and a pole group, wherein the pole group is arranged in the battery cell shell assembly, and the pole lugs of the pole group penetrate through the pole lug penetrating hole grooves to be connected with the connecting sheets, and the bottoms of the pole posts are connected with the connecting sheets through the pol