CN220934342U

CN220934342U - Battery structure

Info

Publication number: CN220934342U
Application number: CN202322708532.8U
Authority: CN
Inventors: 王贝
Original assignee: Chuneng New Energy Co Ltd
Current assignee: Chuneng New Energy Co Ltd
Priority date: 2023-10-10
Filing date: 2023-10-10
Publication date: 2024-05-10
Anticipated expiration: 2033-10-10

Abstract

The utility model discloses a battery structure, and relates to the technical field of batteries. The battery cell comprises a battery cell and a pole, wherein a mounting hole is formed in the side wall of the battery cell, a pole lug is arranged in the mounting hole, the pole lug is inserted into the mounting hole, one end of the pole lug, inserted into the mounting hole, is further connected with the pole lug in the mounting hole in a welding mode, and the other end of the pole lug correspondingly extends out of the battery cell. According to the battery structure, the pole is stably fixed on the side part of the battery core in a welding mode and is also welded and connected with the pole lug of the battery core, so that a new pole side-mounted battery structure is formed, and the installation requirement of separate and ectopic arrangement of the pole and the top cover is met.

Description

Battery structure

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery structure.

Background

The battery comprises a battery shell, an electric core, a pole column, a top cover and other structural components; wherein the pole is a conductive structure connecting the inside and outside of the battery, and in order to make the battery compact to further increase the battery energy density, the pole is generally provided on the top cover, and the electric power of the battery flows to the outside of the battery through the pole at the position of the top cover.

In the patent of the utility model with publication number CN209607775U, named as a battery cover plate with integrated polar plate, the polar column and the structures of the explosion-proof valve, the liquid injection hole and the like are arranged on the top cover of the battery, so that the structure of the top cover becomes complex, and the manufacturing cost of the battery is correspondingly increased. In this regard, the technical idea of disposing the terminal in other areas of the battery except for the position of the top cover is proposed by the technician, so that the top cover and the terminal are separated so as not to affect each other, thereby simplifying the structure of the top cover; however, the existing battery cells are all in a structure form that the lugs are arranged upwards, and the cell structure cannot meet the arrangement requirement of arranging the pole column and the top cover in different positions; meanwhile, the existing pole structure cannot meet the installation requirements of the different-position arrangement of the pole and the top cover.

Disclosure of utility model

The utility model provides a battery structure, wherein a pole is stably fixed on the side part of a battery core in a welding mode and is also welded and connected with a pole lug of the battery core, so that a novel pole side-mounted battery structure is formed, and the installation requirement of separate and ectopic arrangement of the pole and a top cover is met, so that the technical problem is solved.

The technical scheme for solving the problems is as follows: the utility model provides a battery structure, including electric core, utmost point post, the mounting hole has been seted up to the lateral wall department of electric core, be equipped with the utmost point ear in the mounting hole, the utmost point post is inserted and is established in the mounting hole, just the one end of inserting of utmost point post in the mounting hole still with the utmost point ear welding in the mounting hole links to each other, the other end of utmost point post corresponds to stretch out outside the electric core.

Further, the battery cell comprises a plurality of pole pieces, each pole piece is provided with a hole, the plurality of pole pieces form the battery cell in a lamination mode, and the holes of the plurality of pole pieces are correspondingly overlapped to form the mounting holes.

Further, the battery cell has a plurality of lugs, and every lug all is connected in at least one the pole piece, a plurality of lugs around the inner wall of mounting hole is circumference distribution.

Further, the pole includes an outer connector and an inner connector integrally connected, and the pole is inserted into the mounting hole through the inner connector.

Further, a limiting end face is arranged on one side, facing the inner connecting body, of the outer connecting body.

Further, a sealing ring is sleeved on the outer connector, and when the outer connector passes through the shell of the battery, the sealing ring is correspondingly sealed between the outer connector and the shell of the battery.

Further, an end face of the seal ring facing the inner connecting body is higher than an end face of the outer connecting body facing the inner connecting body.

Further, when the sealing ring is sleeved on the outer connector, one end of the sealing ring, which is far away from the battery cell, is lower than one end of the outer connector, which is far away from the battery cell.

Further, the inner connecting body is provided with a welding body, and when the inner connecting body is inserted into the mounting hole, the pole further passes through the welding body to be welded with the pole lug.

The utility model has the beneficial effects that:

1. On the basis that the pole is laterally arranged on the battery core, the pole is welded and connected with the pole lug of the battery core, so that the installation stability of the pole can be greatly improved, and a connecting sheet is not required to be additionally used between the pole and the pole lug, so that the battery structure can be effectively simplified.

2. The lugs are distributed in the mounting holes in a ring shape, and the lugs can be fully contacted with the inserted pole and are welded and connected with the pole, so that the overcurrent performance of the joint of the pole and the lug is ensured.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model. In the drawings, like reference numerals are used to identify like elements. The drawings, which are included in the description, illustrate some, but not all embodiments of the utility model. Other figures can be derived from these figures by one of ordinary skill in the art without undue effort.

Fig. 1 is a schematic view of the overall structure of the battery structure of the present embodiment;

fig. 2 is a schematic structural diagram of a battery cell according to the present embodiment;

1-battery cell, 2-polar post, 3-mounting hole, 4-polar ear, 5-outer connector, 6-inner connector, 7-spacing terminal surface, 8-sealing washer, 9-welded body.

Detailed Description

The terms of orientation such as up, down, left, right, front, rear, front, back, top, bottom, etc. mentioned or possible in this specification are defined with respect to the configurations shown in the drawings, and the terms "inner" and "outer" refer to the relative concepts of the terms toward or away from the geometric center of a particular component, respectively, and thus may be changed accordingly depending on the location and use state of the component. These and other directional terms should not be construed as limiting terms.

It should be noted that, in fig. 1 and fig. 2, only one mounting hole 3 and one corresponding pole 2 are shown, but this does not mean that the battery structure of the present application has only one mounting hole 3 and one pole 2, and the purpose is merely to more clearly describe the mounting manner of the pole 2. In practice, at least two mounting holes 3 are formed in the battery core 1 of the application, so that the battery core 1 can be correspondingly provided with at least two poles 2 at the same time, and the normal use of the battery is ensured.

Referring to fig. 1 and 2, in a battery structure according to an embodiment of the present utility model, a battery cell 1 is mounted in a battery case, a case hole for extending a pole 2 is formed in the battery case, at least two mounting holes 3 are correspondingly formed in the battery cell 1, a positive electrode tab of the battery cell 1 is disposed in at least one mounting hole 3, and a negative electrode tab of the battery cell 1 is disposed in at least one mounting hole 3. Correspondingly, the positive electrode pole is correspondingly inserted into the mounting hole 3 provided with the positive electrode pole lug, the negative electrode pole is correspondingly inserted into the mounting hole 3 provided with the negative electrode pole lug, the corresponding electrode pole 2 is welded with the electrode lug 4 in the mounting hole 3, so that the electrode pole 2 is stably inserted and fixed on the battery cell 1, and the stable electric energy transmission of the battery cell 1 of the electrode pole 2 is ensured.

Further, in this embodiment, the battery cell 1 is formed by alternately laminating a plurality of positive electrode plates and negative electrode plates, each of the electrode plates is provided with a hole, and the foil body of each electrode plate at the hole is not provided with an electrode material; when the pole piece is a positive pole piece, the foil of the positive pole piece forms a positive pole lug at the hole of the positive pole piece, and when the pole piece is a negative pole piece, the foil of the negative pole piece forms a negative pole lug at the hole of the negative pole piece.

Moreover, since the conventional tab 4 is generally circular at the hole of the pole piece, when the pole 2 is inserted into the mounting hole 3, it is difficult to bend the corresponding annular tab 4, resulting in a limited contact area between the annular tab 4 and the pole 2. In this embodiment, the number of the tabs 4 at the hole of each pole piece is plural, that is, the foil of the hole negative electrode of the corresponding pole piece is annularly and equidistantly divided around the hole, so that each tab 4 is in a smaller sheet shape, each tab 4 is convenient to bend and attach to the outer side wall of the pole post 2 correspondingly inserted into the mounting hole 3, so that the contact area between the tab 4 and the pole post 2 is effectively increased, and the overcurrent capacity of the junction of the pole post 2 and the tab 4 is improved.

Further, for convenience in inserting the pole 2 into the mounting hole 3 and welding the pole lug 4 in the mounting hole 3, the pole 2 includes an outer connecting body 5 and an inner connecting body 6, the outer connecting body 5 and the inner connecting body 6 are both cylinders, the diameter of the outer connecting body 5 is larger than that of the inner connecting body 6, the diameter of the inner connecting body 6 is smaller than that of the mounting hole 3, and the length of the inner connecting body 6 is also smaller than that of the mounting hole 3. Thus, when the pole 2 is inserted into the mounting hole 3, the end face of the outer connector 5 facing the side of the battery core 1 can form a limiting end face 7 and mutually block the battery core 1 to limit the position of the pole 2, so that the outer connector 5 of the pole 2 can extend out of the battery from the shell hole of the battery shell while the pole 2 can be inserted into the mounting hole 3 to be welded and connected with the pole lug 4.

Further, referring to the orientation shown in fig. 1, in this embodiment, in order to facilitate welding of the pole 2 with the tab 4, two welding bodies 9 are further provided at the right end of the inner connecting post, and the two welding bodies 9 are made of special welding materials so as to facilitate welding connection of the pole 2 with the tab 4. The two welding bodies 9 are distributed up and down to respectively weld part of the lugs 4.

Further, a sealing ring 8 is sleeved on the outer connector 5, and the sealing ring 8 is made of elastic plastic; when the outer connecting body 5 extends out of the battery case, the sealing ring 8 can be correspondingly spaced between the outer connecting body 5 and the inner wall of the case hole of the battery case, so that the electrolyte is prevented from leaking from the case hole extending out of the pole 2.

In this embodiment, the end face of the sealing ring 8 facing the inner connecting body 6 is the right end face of the sealing ring 8, the end face of the sealing ring 8 at the end far from the battery cell 1 is the left end face of the sealing ring 8, and the end face of the outer connecting body 5 at the end far from the battery cell 1 is the left end face of the outer connecting body 5.

In contrast, when the pole 2 is inserted and installed in the installation hole 3 of the electric core 1, the right end face of the sealing ring 8 is higher than the limit end face 7 of the outer connector 5 to the right, and the right end face of the sealing ring 8 contacts the surface of the electric core 1 in preference to the outer connector 5 to further limit the outer connector from contacting the surface of the electric core 1, so that the battery is short-circuited, and the like.

Meanwhile, the battery cell 1 is correspondingly arranged in the battery shell, and when the pole 2 correspondingly extends out of a shell hole of the battery shell, the left end face of the sealing ring 8 is lower than the left end of the outer connector 5, and the left end body of the outer connector 5 can be fully exposed so that the pole 2 can be connected with external equipment.

The above is applicable to the prior art, where nothing is mentioned.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting. Although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. The utility model provides a battery structure, its characterized in that, includes electric core (1), utmost point post (2), mounting hole (3) have been seted up on the lateral wall of electric core (1), utmost point ear (4) of electric core (1) set up in mounting hole (3), utmost point post (2) are inserted and are established in mounting hole (3), just the one end of inserting of utmost point post (2) in mounting hole (3) still with utmost point ear (4) welding in mounting hole (3) links to each other, the other end of utmost point post (2) corresponds to stretch out outside electric core (1).

2. The battery structure according to claim 1, characterized in that the battery cell (1) comprises a plurality of pole pieces, each of which is provided with a hole, the plurality of pole pieces form the battery cell (1) in a laminated form, and the holes of the plurality of pole pieces are correspondingly overlapped to form the mounting hole (3).

3. The battery structure according to claim 2, wherein a plurality of tabs (4) of the battery cell (1) are provided, each tab (4) is connected to at least one of the pole pieces, and the plurality of tabs (4) are circumferentially distributed around the inner wall of the mounting hole (3).

4. The battery structure according to claim 1, wherein the post (2) includes an outer connecting body (5) and an inner connecting body (6), the outer connecting body (5) and the inner connecting body (6) are integrally connected, and the post (2) is inserted into the mounting hole (3) through the inner connecting body (6).

5. The battery structure according to claim 4, characterized in that the side of the outer connecting body (5) facing the inner connecting body (6) is provided with a limiting end face (7).

6. The battery structure according to claim 4, wherein the outer connector (5) is sleeved with a sealing ring (8), and the sealing ring (8) is correspondingly sealed between the outer connector (5) and the battery case when the outer connector (5) passes through the battery case.

7. The battery structure according to claim 6, characterized in that the end face of the seal ring (8) facing the inner connecting body (6) is higher than the end face of the outer connecting body (5) facing the inner connecting body (6).

8. The battery structure according to claim 6, wherein when the sealing ring (8) is sleeved on the outer connector (5), the end of the sealing ring (8) far from the electric core (1) is lower than the end of the outer connector (5) far from the electric core (1).

9. The battery structure according to claim 4, characterized in that the inner connecting body (6) is provided with a welding body (9), and the pole (2) is further welded with the tab (4) through the welding body (9) when the inner connecting body is inserted into the mounting hole.