Battery cell packaging device

Abstract

The utility model relates to the technical field of batteries, and discloses a battery cell packaging device. The battery cell packaging device comprises a box body and a cover body covering the box body, one side, covering the box body, of the cover body is provided with at least two accommodating grooves for accommodating the upper parts of the battery cells, and the accommodating grooves are internally provided with first grooves for avoiding positive poles of the battery cells and second grooves for avoiding negative poles of the battery cells; the first groove and / or the second groove are / is defined by two arc-shaped first wall parts which are symmetrically arranged and two linear second wall parts which are symmetrically arranged, and the first wall parts are connected with the second wall parts. By means of the mode, the compatibility of the cover body of the packaging device can be improved, and therefore the cost of boxing materials is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a core packaging device. Background Art

[0002] A core refers to an electrochemical core body provided with positive and negative electrodes, which is the electricity storage part in a rechargeable battery and also the basic unit constituting a battery module. As Figure 1 and Figure 2 shown, it is a schematic structural diagram of a core. The core 200 mainly consists of a metal shell 201, an electrochemical material inside the shell, and a positive electrode post 202, a negative electrode post 203, and an explosion-proof valve 204 arranged at the top of the shell.

[0003] In the lithium-ion battery manufacturing industry, after the core products are made, they need to be packed in boxes. The design of the existing packing foam upper cover is relatively single, and it needs to be designed corresponding to the cover plate and the pole post shape of each single core, resulting in the need to redesign a new packing foam upper cover for each new cover plate design, thus increasing the cost of packing materials. Content of the Utility Model

[0004] The utility model provides a core packaging device, which can improve the compatibility of the cover body of the packaging device, thereby reducing the cost of packing materials.

[0005] To solve the above technical problems, a technical solution adopted by the utility model is: to provide a core packaging device, including: a box body and a cover body that covers the box body;

[0006] On one side of the cover body covering the box body, there are at least two accommodation grooves for accommodating the upper part of the core. In the accommodation groove, there is a first groove for avoiding the positive electrode post of the core and a second groove for avoiding the negative electrode post of the core. The first groove and / or the second groove are formed by enclosing two symmetrically arranged arc-shaped first wall parts and two symmetrically arranged linear second wall parts, and the first wall part is connected to the second wall part.

[0007] According to an embodiment of the utility model, the first wall part includes a first arc segment, a first connection segment connecting one end of the first arc segment, a second arc segment connecting the first connection segment, a second connection segment connecting the other end of the first arc segment, and a third arc segment connecting the second connection segment. The second arc segment and the third arc segment are respectively connected to different second wall parts.

[0008] According to an embodiment of the utility model, the arc length of the first arc segment is greater than the arc lengths of the second arc segment and the third arc segment, and the arc lengths of the second arc segment and the third arc segment are the same.

[0009] According to an embodiment of the present utility model, a third groove for avoiding the explosion-proof valve of the battery cell is provided in the accommodating groove, and the first groove and the second groove are respectively arranged on two sides of the third groove and are spaced apart from the third groove.

[0010] According to an embodiment of the present utility model, a first avoidance groove communicating the first groove and the third groove and a second avoidance groove communicating the second groove and the third groove are provided in the accommodating groove.

[0011] According to an embodiment of the present utility model, the cross section of the cover body is rectangular, and the cover body includes a first side wall extending along the long axis direction and a second side wall extending along the short axis direction.

[0012] According to an embodiment of the present utility model, the cross section of the accommodating groove is rectangular, and the accommodating groove is formed by surrounding a first wall body extending along the long axis direction and a second wall body extending along the short axis direction.

[0013] According to an embodiment of the present utility model, the first wall portion extends along the long axis direction, and the second wall portion extends along the short axis direction.

[0014] According to an embodiment of the present utility model, a slotted opening communicating with the first groove or the second groove is provided on the first wall body.

[0015] According to an embodiment of the present utility model, when a plurality of the accommodating grooves are provided, the plurality of accommodating grooves are arranged in an array.

[0016] The beneficial effect of the present utility model is that a battery cell packaging device includes: a box body and a cover body covering the box body; at least two accommodating grooves for accommodating the upper part of the battery cell are provided on one side of the cover body covering the box body, a first groove for avoiding the positive electrode column of the battery cell and a second groove for avoiding the negative electrode column of the battery cell are provided in the accommodating groove, the first groove and / or the second groove are formed by surrounding two symmetrically arranged arc-shaped first wall portions and two symmetrically arranged linear second wall portions, and the first wall portion is connected to the second wall portion; through the design of the arc-shaped first wall portion and the linear second wall portion, it can be applicable to circular pole column cover plates and square pole column cover plates, improving the compatibility of the cover body of the packaging device, thereby reducing the cost of boxing materials. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of a prior art circular aluminum shell battery cell;

[0018] Figure 2 is a schematic structural diagram of a prior art square aluminum shell battery cell;

[0019] Figure 3 It is a schematic structural diagram of a battery cell packaging device according to an embodiment of the present utility model;

[0020] Figure 4 It is a three-dimensional structural diagram of a cover body according to an embodiment of the present utility model;

[0021] Figure 5 It is a planar structural diagram of a cover body according to an embodiment of the present utility model;

[0022] Figure 6 is Figure 4 an enlarged view of area A in

[0023] The meanings of the reference numerals in the drawings are as follows:

[0024] 100 - battery cell packaging device; 10 - box body; 20 - cover body; 21 - first side wall; 22 - second side wall; 30 - accommodating groove; 31 - first wall body; 32 - second wall body; 310 - slotted opening; 40 - first groove; 41 - first wall portion; 42 - second wall portion; 411 - first arc segment; 412 - first connecting segment; 413 - second arc segment; 414 - second connecting segment; 415 - third arc segment; 50 - second groove; 60 - third groove; 70 - first avoidance groove; 80 - second avoidance groove; 200 - battery cell; 201 - housing; 202 - positive electrode post; 203 - negative electrode post; 204 - explosion-proof valve. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0026] The terms "first", "second", and "third" in the present utility model are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", and "third" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined. All directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, then the directional indications will also change accordingly. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0027] As used herein, the term "embodiment" means that the specific features, structures, or characteristics described in connection with the embodiments may be included in at least one embodiment of the present utility model. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

[0028] As Figure 1 and Figure 2 shown, it is a schematic structural diagram of an electric core. The electric core 200 mainly consists of a metal shell 201, an electrochemical material inside the shell 202, and a positive electrode post 202, a negative electrode post 203, and an explosion-proof valve 204 arranged on the top of the shell 201. The design of the packing foam upper cover made by related technologies is relatively single and needs to be designed corresponding to the cover plate and the shape of the electrode post of each type of electric core, resulting in the need to redesign a new packing upper cover for each new cover plate design, thus increasing the cost of packing materials. The electric core packaging device of the embodiment of the present utility model is applicable to round electrode post cover plates and square electrode post cover plates, can improve the compatibility of the cover body of the packaging device, and thus reduce the cost of packing materials.

[0029] Figure 3 is a schematic structural diagram of an electric core packaging device according to an embodiment of the present utility model. As Figure 3 shown, the electric core packaging device 100 includes: a box body 10 and a cover body 20 that covers the box body 10.

[0030] The cross-section of the cover body 20 is rectangular or square. As an embodiment, the cross-section of the cover body 20 is rectangular, and the cover body 20 includes a first side wall 21 extending along the long axis direction and a second side wall 22 extending along the short axis direction.

[0031] Further, please refer to Figure 4 and Figure 5 , at least two accommodating grooves 30 for accommodating the upper part of the electric core are provided on one side of the cover body 20 for covering the box body 10. As an embodiment, when multiple accommodating grooves 30 are provided, the multiple accommodating grooves 30 are arranged in an array. As an embodiment, the cross-section of the accommodating groove 30 is rectangular, and the accommodating groove 30 is formed by enclosing a first wall body 31 extending along the long axis direction and a second wall body 32 extending along the short axis direction.

[0032] Further, please refer to Figure 4 - Figure 6, a first groove 40 for avoiding the positive electrode post 202 of the battery cell 200 and a second groove 50 for avoiding the negative electrode post 203 of the battery cell 200 are provided in the accommodating groove 30. The first groove 40 and / or the second groove 50 are formed by enclosing two symmetrically arranged arc-shaped first wall portions 41 and two symmetrically arranged linear second wall portions 42, and the first wall portion 41 is connected to the second wall portion 42. In this embodiment, through the design of the arc-shaped first wall portion 41 and the linear second wall portion 42, it can be applicable to both circular pole cover plates and square pole cover plates, improving the compatibility of the cover body 20 of the packaging device 100, thereby reducing the cost of packing materials.

[0033] The structures of the first groove 40 and the second groove 50 may be the same or different. As an embodiment, the first groove 40 is formed by enclosing two symmetrically arranged arc-shaped first wall portions 41 and two symmetrically arranged linear second wall portions 42. As an embodiment, the second groove 50 is formed by enclosing two symmetrically arranged arc-shaped first wall portions 41 and two symmetrically arranged linear second wall portions 42. As a relatively preferred embodiment, the first groove 40 and the second groove 50 are formed by enclosing two symmetrically arranged arc-shaped first wall portions 41 and two symmetrically arranged linear second wall portions 42.

[0034] Furthermore, the first wall portion 41 extends along the long axis direction, and the second wall portion 42 extends along the short axis direction.

[0035] Furthermore, the structures of the two arc-shaped first wall portions 41 are the same. Please refer to Figure 6 , the first wall portion 41 includes a first arc segment 411, a first connecting segment 412 connecting one end of the first arc segment 411, a second arc segment 413 connecting the first connecting segment 412, a second connecting segment 414 connecting the other end of the first arc segment 411, and a third arc segment 415 connecting the second connecting segment 414. The second arc segment 413 and the third arc segment 415 are respectively connected to different second wall portions 42. Among them, the arc length of the first arc segment 411 is greater than the arc lengths of the second arc segment 413 and the third arc segment 415, and the arc lengths of the second arc segment 413 and the third arc segment 415 are the same. In this embodiment, the arc-shaped first wall portion 41 can be applicable to both circular poles and square poles, improving the compatibility of the cover body of the packaging device 100, thereby reducing the cost of packing materials.

[0036] Furthermore, please refer to Figure 4 and Figure 5 , a third groove 60 for avoiding the explosion-proof valve 204 of the battery cell 200 is provided in the accommodating groove 30. The first groove 40 and the second groove 50 are respectively arranged on both sides of the third groove 60 and are spaced apart from the third groove 60.

[0037] Furthermore, please refer to Figure 5, a first avoidance groove 70 communicating with the first groove 40 and the third groove 60 and a second avoidance groove 80 communicating with the second groove 50 and the third groove 60 are provided in the accommodation groove 30. The first avoidance groove 70 can conduct the air between the first groove 40 and the third groove 60, and the second avoidance groove 80 can conduct the air between the second groove 50 and the third groove 60, preventing water droplets from being generated in the battery cell packaging device 100.

[0038] Further, please refer to Figure 6 , a slotted opening 310 communicating with the first groove 40 or the second groove 50 is provided on the first wall body 31. It can be understood that the slotted opening 310 communicating with the first groove 40 is provided on the first wall body 31 close to the first groove 40, and the slotted opening 310 communicating with the second groove 50 is provided on the first wall body 31 close to the second groove 50. The slotted opening 310 can conduct the air in the first groove 40 and the second groove 50, preventing water droplets from being generated in the battery cell packaging device 100.

[0039] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A battery cell packaging device, characterized in that: include: A box body and a cover body covering the box body; At least two accommodating grooves for accommodating the upper part of the battery cell are provided on one side of the cover body covering the box body, and a first groove for avoiding the positive electrode column of the battery cell and a second groove for avoiding the negative electrode column of the battery cell are provided in the accommodating groove, and the first groove and / or the second groove are formed by two symmetrically arranged arc-shaped first wall portions and two symmetrically arranged linear second wall portions, and the first wall portion is connected to the second wall portion.

2. The battery cell packaging device according to claim 1, characterized in that: The first wall portion includes a first arc segment, a first connecting segment connecting one end of the first arc segment, a second arc segment connecting the first connecting segment, a second connecting segment connecting the other end of the first arc segment, and a third arc segment connecting the second connecting segment, and the second arc segment and the third arc segment are respectively connected to different second wall portions.

3. The battery cell packaging device according to claim 2, characterized in that: The arc length of the first arc segment is greater than the arc lengths of the second arc segment and the third arc segment, and the arc lengths of the second arc segment and the third arc segment are the same.

4. The battery cell packaging device according to claim 1, characterized in that: A third groove for avoiding the explosion-proof valve of the battery cell is provided in the accommodating groove, and the first groove and the second groove are respectively provided on both sides of the third groove and are spaced apart from the third groove.

5. The battery cell packaging device according to claim 4, characterized in that: A first avoidance groove communicating with the first groove and the third groove and a second avoidance groove communicating with the second groove and the third groove are provided in the accommodating groove.

6. The battery cell packaging device according to claim 1, characterized in that: The cross section of the cover body is rectangular, and the cover body includes a first side wall extending along the long axis direction and a second side wall extending along the short axis direction.

7. The battery cell packaging device according to claim 6, characterized in that: The cross section of the accommodating groove is rectangular, and the accommodating groove is formed by a first wall extending along the long axis direction and a second wall extending along the short axis direction.

8. The battery cell packaging device according to claim 7, characterized in that: The first wall portion extends along the long axis direction, and the second wall portion extends along the short axis direction.

9. The battery cell packaging device according to claim 7, characterized in that: The first wall body is provided with a groove connected to the first groove or the second groove.

10. The battery cell packaging device according to claim 1, characterized in that: When a plurality of the containing grooves are provided, the plurality of the containing grooves are distributed in an array.

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