Battery cell connecting piece of battery pack

Abstract

The utility model discloses a battery cell connecting piece of a battery pack, which comprises a connecting piece electrically connected with a battery cell on a battery cell support. The connecting sheet is provided with a contact structure area, the battery cell bracket is provided with an embedding groove matched with the outline of the connecting sheet, and when the connecting sheet is embedded into the corresponding embedding groove, the contact structure area on the inner side surface is in contact with the electrode of the battery cell. The connecting piece can be matched with the caulking groove of the battery cell bracket to realize positioning, so that the efficiency is improved, a gap between the connecting piece and the battery cell bracket is reduced, and the phenomenon that the battery cell is damaged and short circuit is caused by splashing generated in the welding process of the connecting piece is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery packs, and in particular relates to a cell connecting piece of a battery pack. Background Art

[0002] The cell connector of a battery pack is a key component for connecting individual cells. Its primary function is to connect multiple cells in series or parallel to meet the voltage and capacity requirements of the battery system. Existing battery pack connectors are welded to the cells, but lack proper alignment between the connector and the cell holder. This requires a positioning mechanism to assist in positioning the connector, which impacts welding efficiency and creates a large gap between the connector and the cell holder. Spatter generated during welding can easily damage the cells and become debris that can cause short circuits. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the utility model provides a cell connecting piece for a battery pack, which can cooperate with the embedding groove of the cell holder to achieve positioning, thereby improving efficiency while reducing the gap between the connecting piece and the cell holder, and avoiding splashing generated during the welding process of the connecting piece to damage the cell and cause a short circuit.

[0004] Technical solution: To achieve the above-mentioned purpose, the utility model provides a battery cell connecting piece for a battery pack, comprising a connecting piece, the connecting piece being electrically connected to the battery cell on the battery cell bracket;

[0005] The connecting piece has a contact structure area, and the battery cell bracket is provided with an embedding groove that matches the outer contour of the connecting piece. When the connecting piece is embedded in the corresponding embedding groove, the contact structure area on the inner side contacts the electrode of the battery cell.

[0006] Furthermore, a positioning port is provided on the connecting piece, a wire channel is provided on the battery cell support, the end of the wire channel extends into the embedding groove, and the positioning port is snap-fitted with the end of the wire channel.

[0007] Furthermore, the positioning opening is provided with a wiring ear facing the end of the wire channel.

[0008] Furthermore, the contact structure area is recessed from the outer side of the connecting piece to the inner side thereof, so that the contact structure area protrudes from the inner side of the connecting piece.

[0009] Furthermore, the connecting piece, the contact structure area and the wiring ear are integrally formed.

[0010] Furthermore, the contact structure area is provided with strip-shaped holes.

[0011] Furthermore, a notch is provided at the edge of the connecting piece, and the connecting piece embedded in the embedding groove forms an exposed hole through the notch and the inner groove wall of the embedding groove.

[0012] Furthermore, the same connecting piece has a plurality of contact structure areas; each of the contact structure areas has at least one notch, and the notch is located at the boundary between the contact structure area and the connecting piece and at the edge of the connecting piece.

[0013] Furthermore, the connecting piece is in a diamond shape or a long strip shape as a whole.

[0014] Beneficial effects: The connecting piece of the utility model can cooperate with the embedding groove of the battery holder to achieve positioning, thereby facilitating welding operations and improving efficiency. At the same time, based on the embedded positioning of the connecting piece, the gap between the connecting piece and the battery holder is greatly reduced, avoiding the splash generated during the welding process of the connecting piece to damage the battery cell and become debris that causes a short circuit, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a structural diagram of the connecting piece;

[0016] Figure 2 This is a schematic diagram of the structure of connecting the connecting piece to the battery cell;

[0017] Figure 3 This is a schematic diagram of the structure of a battery cell with a battery cell connecting piece connected to a battery cell holder. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] like Figure 1 、 Figure 2 as well as Figure 3 As shown, a battery pack cell connector includes a connector 3 that electrically connects to a cell 2 on a cell holder 1. The connector 3 has a contact structure area 30. The cell holder 1 is provided with a recess 10 that matches the outer contour of the connector 3. When the connector 3 is inserted into the corresponding recess 10, the contact structure area 30 on the inner side contacts the electrode of the cell 2. The connector 3 of the utility model can cooperate with the recess 10 of the cell holder 1 to achieve positioning, thereby facilitating welding operations and improving efficiency. At the same time, based on the embedded positioning of the connector 3, the gap between the connector 3 and the cell holder 1 is greatly reduced, preventing spatter generated during the welding process of the connector 3 from damaging the cell and becoming debris that causes short circuits, thereby improving safety.

[0020] In order to further position the connecting piece embedded in the embedding groove 10 more stably, as shown in FIG. Figure 3As shown, a positioning hole 33 is provided on the connecting piece 3, and a wire channel 11 is provided on the battery holder 1. The end of the wire channel 11 extends into the embedding groove 10. The positioning hole 33 is snap-fitted with the end of the wire channel 11. The inherent wire channel 11 is used to participate in the positioning of the connecting piece, and the structure is simpler, thereby achieving further positioning of the connecting piece 3 and improving the stability of the connecting piece 3.

[0021] like Figure 3 As shown, in order to facilitate the wiring of the connecting piece 3 , the positioning opening 33 is built with a wiring ear 34 facing the end of the wire channel 11 .

[0022] More specifically, in this embodiment, the contact structure area 30 is recessed from the outer surface to the inner surface of the connecting piece 3, so that the contact structure area 30 protrudes from the inner surface of the connecting piece 3. The connecting piece 3, the contact structure area 30, and the terminal lug 34 are integrally formed and made of copper or aluminum with good electrical conductivity.

[0023] The contact structure area 30 is provided with a strip hole 31 , which is used during welding to ensure that the positive and negative electrodes of the battery cell 2 and the connecting piece can be firmly connected together.

[0024] The edge of the connecting piece 3 is provided with a notch 32. The connecting piece 3 embedded in the embedding groove 10 forms an exposed hole 4 with the inner groove wall of the embedding groove 10 through the notch 32. The setting of the notch 32 can provide additional mechanical stability and flexibility for the connecting piece. In addition, the notch 32 can also release the heat generated by the battery during the charging and discharging process to maintain the performance of the battery and extend its life.

[0025] To accommodate closely packed cells 2, the present invention provides a plurality of contact structure areas 30 on the same connecting piece 3. Each contact structure area 30 has at least one notch 32, located at the boundary between the contact structure area 30 and the connecting piece 3 and at the edge of the connecting piece 3. The connecting piece 3 is generally diamond-shaped or elongated, and the embedding groove 10 is also designed with an adaptive structural shape.

[0026] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A cell connecting piece of a battery pack, comprising a connecting piece (3), wherein the connecting piece (3) is electrically connected to a cell (2) on a cell support (1); Its characteristics are: The connecting piece (3) has a contact structure area (30), and the battery cell support (1) is provided with an embedding groove (10) that matches the outer contour of the connecting piece (3). When the connecting piece (3) is embedded in the corresponding embedding groove (10), the contact structure area (30) on the inner side surface contacts the electrode of the battery cell (2).

2. The cell connecting piece of a battery pack according to claim 1, characterized in that: The connecting piece (3) is provided with a positioning opening (33), the battery cell support (1) is provided with a wire channel (11), the end of the wire channel (11) extends into the embedding groove (10), and the positioning opening (33) is snap-fitted with the end of the wire channel (11).

3. The cell connecting piece of a battery pack according to claim 2, characterized in that: The positioning opening (33) is provided with a wiring ear (34) facing the end of the wire channel (11).

4. The cell connecting piece of a battery pack according to claim 3, characterized in that: The contact structure area (30) is formed by being recessed from the outer side to the inner side of the connecting piece (3), so that the contact structure area (30) protrudes from the inner side of the connecting piece (3).

5. The cell connecting piece of a battery pack according to claim 4, characterized in that: The connecting piece (3), the contact structure area (30) and the wiring ear (34) are integrally formed.

6. The cell connecting piece of a battery pack according to claim 5, characterized in that: The contact structure area (30) is provided with a strip-shaped hole (31).

7. The cell connecting piece of a battery pack according to claim 5, characterized in that: The edge of the connecting piece (3) is provided with a notch (32), and the connecting piece (3) embedded in the embedding groove (10) forms a revealing hole (4) through the notch (32) and the inner groove wall of the embedding groove (10).

8. The cell connecting piece of a battery pack according to claim 7, characterized in that: The same connecting piece (3) has a plurality of contact structure areas (30); each of the contact structure areas (30) has at least one notch (32); the notch (32) is located at the boundary between the contact structure area (30) and the connecting piece (3) and at the edge of the connecting piece (3).

9. The cell connecting piece of a battery pack according to claim 8, characterized in that: The connecting piece (3) is in a rhombus or long strip shape as a whole.

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