Connecting piece and battery

Abstract

The utility model belongs to the technical field of batteries, and particularly relates to a connecting piece and a battery, and the connecting piece comprises a connecting sheet which is used for being welded with a tab of a battery cell; the insulating supporting part is connected with one side of the connecting sheet and is used for supporting the battery cell; wherein a pole hole is formed in the connecting piece, and the supporting part is hollow and is communicated with the pole hole; the utility model has the beneficial effects that the tabs of the battery cell are fixedly connected with the pole columns through the connecting sheets, and the insulating support parts support the battery cell, so that the tabs are prevented from being pulled by shaking of the battery cell, and the tabs are prevented from being broken and damaged.

Description

Technical Field

[0001] The utility model belongs to the technical field of batteries, and in particular relates to a connector and a battery. Background Art

[0002] At present, there are two ways to produce battery cells. One is to form a core by winding the electrodes, and the other is to form a stacked core by stacking the electrodes. After forming, both types of cells need to be hot-pressed and shaped first, and then assembled and welded, and finally formed and capacity-divided to form a finished battery.

[0003] In the prior art, Figure 3 As shown in the figure, in order to reduce the bending of the tabs, some batteries adopt a non-core assembly method, that is, the adapter plate 7 is set between the two battery cells 4, the tabs of the two battery cells 4 are welded to one surface of the adapter plate, and the other surface of the adapter plate is welded to the pole on the top cover of the battery. After welding, it can be put into the shell. In this battery design, due to the non-core, when the finished battery is made, the adapter plate 7 is still between the two battery cells 4; because the adapter plate 7 is a thin piece, there is a distance between the two battery cells 4. Therefore, during battery transportation, testing and other working conditions, when the battery cell 4 shakes or vibrates, it is easy to cause the tab to be pulled or broken, thereby affecting the battery performance. Utility Model Content

[0004] The purpose of the present invention is to provide a connector and a battery to solve the above-mentioned technical problems.

[0005] In view of this, the present invention provides a connecting piece, comprising:

[0006] Connecting piece, which is used for welding to the tab of the battery cell;

[0007] an insulating support portion connected to one side of the connecting piece and disposed between at least two battery cells for supporting the battery cells;

[0008] The connecting piece is provided with a pole hole, and the interior of the supporting portion is hollow and communicated with the pole hole.

[0009] Furthermore, the insulating support portion is connected to the bottom of the connecting piece.

[0010] Furthermore, the shape of the connecting piece is any one of square, circle and triangle.

[0011] Furthermore, the insulating support portion is a cylindrical structure.

[0012] Furthermore, the connecting piece is embedded in the insulating support portion.

[0013] Furthermore, the axial end surface of the insulating support portion is flush with the connecting piece.

[0014] Furthermore, the thickness of the connecting piece is 0.3-2 mm.

[0015] Furthermore, the thickness of the insulating support portion is 1-10 mm.

[0016] Furthermore, the insulating support portion is made of any one or more of plastic, rubber, and polyurethane.

[0017] A battery comprising any one of the above connectors.

[0018] Furthermore, it also includes:

[0019] A battery housing having an opening structure;

[0020] A battery top cover, which is mounted on the opening of the shell;

[0021] The pole is installed on the top cover of the battery;

[0022] Battery cells, which are installed in the battery casing;

[0023] The pole is connected to the battery cell through a connector.

[0024] Furthermore, the pole at least partially extends into the pole hole to achieve connection between the pole and the battery cell;

[0025] One end of the insulating support portion away from the connecting piece abuts against the bottom of the battery housing, and the tab of the battery cell is electrically connected to the upper surface of the connecting piece;

[0026] The upper surface of the connecting piece is the surface of the connecting piece away from the bottom of the battery housing.

[0027] Furthermore, the battery includes at least two battery cells, and the insulating support portion is located at least between the two battery cells to support the battery cells on both sides thereof.

[0028] The beneficial effects of the utility model are:

[0029] The tabs of the battery cell are connected and fixed to the poles through connecting plates. The insulating support part is arranged between the two battery cells to support the battery cells on both sides, thereby avoiding the pulling of the tabs caused by the shaking of the battery cells and effectively preventing the tabs from breaking and being damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural diagram of the connecting piece in the utility model;

[0031] Figure 2 It is a structural diagram of the battery in the utility model;

[0032] Figure 3It is a schematic diagram of the assembly of the battery cell and the adapter in the prior art;

[0033] The marks in the figure are:

[0034] 1. Connecting piece; 11. Pole hole; 2. Insulating support portion; 21. Axial end face; 3. Battery housing; 4. Battery cell; 5. Battery top cover; 6. Pole; 7. Adapter. DETAILED DESCRIPTION

[0035] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of this application.

[0036] In the description of this application, it should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to this application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0037] Example 1:

[0038] This embodiment provides a connecting piece, including:

[0039] Connecting piece 1, which is used for welding to the tab of battery cell 4;

[0040] an insulating support portion 2 connected to one side of the connecting piece 1 and disposed between at least two battery cells 4 for supporting the battery cells 4;

[0041] The connecting piece 1 is provided with a pole hole 11, and the interior of the supporting portion is hollow and communicates with the pole hole 11;

[0042] Furthermore, the insulating support portion 2 is connected to the bottom of the connecting piece 1 .

[0043] In the present technical solution, the connector consists of a connecting piece 1 and an insulating support portion 2. Specifically, when the connector 1 is assembled in the battery, the connecting piece 1 can be glued to the insulating support portion 2 by glue. Of course, the connecting piece 1 and the insulating support portion 2 can also be integrally formed. The insulating support portion 2 is installed between at least two battery cells 4 and abuts against the bottom of the battery shell 3. The connecting piece 1 at the upper end of the insulating support portion 2 is welded to the tabs of the battery cell 4. After the welding of the connecting piece 1 and the tabs of the battery cell 4 is completed, the pole 6 installed on the battery top cover 5 is plugged into the pole hole 11 of the connecting piece 1 to achieve a positioning effect. Then the pole 6 is welded to the connecting piece 1 to achieve connection and conduction between the tab and the pole 6.

[0044] To sum up, the tabs of the battery cell 4 are connected and fixed to the pole 6 through the connecting piece 1, and the insulating support part 2 is arranged between the two battery cells 4 to support the battery cells 4, thereby avoiding the pulling of the tabs caused by the shaking of the battery cells 4 and effectively preventing the tabs from breaking and being damaged.

[0045] Example 2:

[0046] This embodiment provides a connector, which, based on the technical solutions provided in the above embodiments, also has the following technical features.

[0047] Furthermore, the shape of the connecting piece 1 is any one of square, circle and triangle.

[0048] In this technical solution, the shape of the connecting piece 1 is designed according to the actual situation inside the battery shell 3. It can be square, circular, triangular or other polygonal structures, or other irregular shapes, which effectively improves the space utilization inside the battery shell 3.

[0049] Example 3:

[0050] This embodiment provides a connector, which, based on the technical solutions provided in the above embodiments, also has the following technical features.

[0051] Furthermore, the insulating support portion 2 is a cylindrical structure.

[0052] In this technical solution, the insulating support part 2 is configured as a cylindrical structure and the axial cross-sectional shape is adapted to the shape structure of the connecting piece 1. Through this structural design, the interior of the insulating support part 2 is hollow, effectively reducing material input and lowering production costs.

[0053] Example 4:

[0054] This embodiment provides a connector, which, based on the technical solutions provided in the above embodiments, also has the following technical features.

[0055] Furthermore, the connecting piece 1 is embedded in the insulating support portion 2. This structural design shields the side of the connecting piece 1 from the insulating support portion 2, thereby preventing the battery cell 4 from accidentally contacting the side of the connecting piece 1 due to shaking, thereby enhancing the insulation protection effect and effectively improving battery performance.

[0056] Furthermore, the axial end surface 21 of the insulating support portion 2 is flush with the connecting piece 1 .

[0057] Furthermore, a rounded structure is provided on the end portion where the insulating support portion 2 is connected to the connecting piece 1 .

[0058] Through this structural design, the axial end face 21 of the insulating support part 2 will not be higher than the connecting piece 1, and the part of the axial end face 21 of the insulating support part 2 that contacts the pole ear of the battery cell 4 is a rounded structure, which avoids the pole ear of the battery cell 4 being welded on the connecting piece 1 and rubbing against the insulating support part 2, effectively preventing the pole ear of the battery cell 4 from being damaged and improving the protection effect of the pole ear.

[0059] Example 5:

[0060] This embodiment provides a connector, which, based on the technical solutions provided in the above embodiments, also has the following technical features.

[0061] Furthermore, the thickness of the connecting piece 1 is 0.3-2 mm.

[0062] Furthermore, the thickness of the insulating support portion 2 is 1-10 mm. 。

[0063] In this technical solution, a thinner connecting sheet 1 may result in higher resistance, thus affecting battery performance; while a thicker one may lead to unnecessary material waste and weight increase. This structural design ensures that current can effectively flow through the connecting sheet 1, guaranteeing battery charging efficiency while avoiding resource waste, resulting in high practicality.

[0064] In this technical solution, the thickness of the insulating support portion 2 is within the above range, which can further enhance its supporting effect on the battery cell 4 .

[0065] Example 6:

[0066] This embodiment provides a connector, which, based on the technical solutions provided in the above embodiments, also has the following technical features.

[0067] Furthermore, the insulating support portion 2 is made of any one or more of plastic, rubber, and polyurethane, which can provide stable and excellent electrical insulation performance, effectively prevent current leakage and short circuit, and at the same time ensure that the insulating support portion 2 has good mechanical strength, thereby improving the support effect on the connecting piece 1 and the tab.

[0068] Example 7:

[0069] This embodiment provides a battery, including the connector provided in any one of the above embodiments 1-6. It also includes:

[0070] The battery housing 3 is provided with an opening structure;

[0071] The battery top cover 5 is installed at the opening of the shell;

[0072] The pole 6 is mounted on the battery top cover 5;

[0073] Battery cell 4, battery cell 4 is installed in battery housing 3;

[0074] The pole 6 is connected to the battery cell 4 via a connector.

[0075] In some embodiments, as Figure 2 As shown, the pole 6 at least partially extends into the pole hole 11 to achieve the connection between the pole 6 and the battery cell 4; the end of the insulating support part 2 away from the connecting piece 1 abuts against the bottom of the battery shell 3, and the pole ear of the battery cell 4 is electrically connected to the upper surface of the connecting piece 1; wherein, the upper surface of the connecting piece 1 is the surface of the side of the connecting piece 1 away from the bottom of the battery shell 3.

[0076] In some embodiments, the battery includes at least two battery cells 4 , and the insulating support portion 2 is located at least between the two battery cells 4 to support the battery cells 4 on both sides thereof.

[0077] With this embodiment, since the insulating support portion 2 is located between the two battery cells 4, it can limit the connecting piece 1 in the horizontal direction, preventing the battery cell 4 from shaking in the horizontal direction inside the battery housing 3. That is, the insulating support portion 2 further limits the battery cell 4 in the battery. Therefore, the pulling of the tabs caused by the shaking of the battery cells 4 is avoided, and the tabs are effectively prevented from breaking and being damaged. In addition, since the insulating support portion 2 is located between the two battery cells 4, the utilization of the space in the height direction of the battery is also improved, that is, the height direction of the battery can be designed to be more compact. In this way, the shaking of the battery cell 4 in the height direction can also be reduced. Therefore, the risk of the tabs being pulled due to the shaking of the battery cell 4 is further improved and reduced.

[0078] The embodiments of the present application are described above in conjunction with the accompanying drawings. Unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A connector, characterized in that: include: A connecting piece (1), the connecting piece (1) being used for welding to the tab of the battery cell (4); an insulating support portion (2), the insulating support portion (2) being connected to one side of the connecting piece (1), and the insulating support portion (2) being arranged between at least two battery cells (4) and used for supporting the battery cells (4); The connecting piece (1) is provided with a pole hole (11), and the interior of the supporting portion is hollow and communicates with the pole hole (11).

2. The connector according to claim 1, wherein: The insulating support portion (2) is connected to the bottom of the connecting piece (1).

3. The connector according to claim 1, wherein: The shape of the connecting piece (1) is any one of square, circular and triangular; and the insulating support portion (2) is a cylindrical structure.

4. The connector according to claim 1, wherein: The connecting piece (1) is embedded in the insulating support portion (2).

5. The connector according to claim 4, characterized in that The axial end surface (21) of the insulating support portion (2) is flush with the connecting piece (1).

6. The connector according to claim 5, characterized in that A rounded corner structure is provided on the end portion where the insulating support portion (2) is connected to the connecting piece (1).

7. The connector according to claim 3, characterized in that The thickness of the connecting piece (1) is 0.3-2 mm; the thickness of the insulating support portion (2) is 1-10 mm.

8. A battery, characterized in that: A connector comprising any one of claims 1 to 7; The battery further comprises: A battery housing (3), wherein the battery housing (3) is provided with an opening structure; A battery top cover (5), the battery top cover (5) being mounted at the opening of the housing; A pole (6), wherein the pole (6) is mounted on the battery top cover (5); A battery core (4), wherein the battery core (4) is installed in the battery housing (3); Wherein, the pole (6) is connected to the battery core (4) via a connecting piece.

9. The battery according to claim 8, characterized in that Also includes: The pole (6) at least partially extends into the pole hole (11) to achieve connection between the pole (6) and the battery cell (4); The insulating support portion (2) is in contact with the bottom of the battery housing (3) at one end away from the connecting piece (1), and the tab of the battery cell (4) is electrically connected to the upper surface of the connecting piece (1); The upper surface of the connecting piece (1) is the surface of the connecting piece (1) on the side away from the bottom of the battery housing (3).

10. The battery according to claim 8, characterized in that: The battery comprises at least two battery cells (4), and the insulating support portion (2) is located at least between the two battery cells (4) to support the battery cells (4) on both sides thereof.

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