Battery shell and single battery

Abstract

The battery shell comprises a main shell and a cover body, the main shell comprises a main body part and a connecting part, the main body part and the connecting part are of an integrally formed structure, the main body part is provided with an accommodating cavity for accommodating a core package, and the connecting part is used for fixing the battery shell at a preset position; the cover body is connected with the main body part and covers the containing cavity. According to the battery shell, the main body part and the connecting part are arranged to be of the integrally formed structure, so that the battery shell is provided with a fastener fixing structure, the problem that a screw fixing structure needs to be added through welding or other methods after a single battery is produced is solved, the production process of the battery shell is further simplified, and the production cost of the single battery is reduced.

Description

Technical Field

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

[0002] In the era of rapid iteration of electronic products, especially since the EU has put forward the requirement for removable and replaceable batteries for handheld electronic devices, the number of batteries used in electronic products will increase and the scope will become wider and wider. In the design of battery shells, the general method currently adopted by the industry is to add screw fixing structures by welding after the battery shells are made, which makes the production and processing technology of battery shells more complicated, resulting in higher production costs of batteries. Utility Model Content

[0003] An object of the present invention is to provide a battery housing and a single battery, which aims to reduce the process complexity of the battery housing and thus reduce the production cost of the battery.

[0004] In order to achieve the above object, the utility model provides a solution: a battery housing, comprising:

[0005] A main shell, comprising a main body and a connecting part, wherein the main body and the connecting part are an integrally formed structure, the main body is provided with an accommodating cavity for accommodating the core pack, and the connecting part is used to fix the battery shell at a preset position; and

[0006] The cover body is connected to the main body and covers the accommodating cavity.

[0007] Optionally, the main body is provided with an opening connected to the accommodating cavity, the cover body closes the opening, the main body is provided with a pole hole, the pole hole is used to assemble the pole, and the opening and the pole hole are respectively arranged on adjacent sides of the main body.

[0008] Optionally, the connection portion and the opening of the main body portion are connected at edges and extend in a direction away from the opening.

[0009] Optionally, the main body and the connecting portion are an integral stamping structure, and the wall thickness of the main body is equal to the thickness of the connecting portion.

[0010] Optionally, there are multiple connecting parts, and the multiple connecting parts are distributed on one side, two opposite sides, three adjacent sides, or four adjacent sides of the main body.

[0011] Optionally, a through hole is provided on the connecting portion, and the through hole is used for a fastener to pass through.

[0012] Optionally, the via hole is a closed structure or a notched structure.

[0013] Optionally, the connecting portion is directly connected to the main body; and / or the connecting portion is indirectly connected to the main body via a bending portion.

[0014] Optionally, the main body includes a main bottom wall and multiple main side walls, the multiple main side walls and the main bottom wall are connected together to form the accommodating cavity, the multiple main side walls are connected to form the opening, the pole hole is opened on the main side wall, and the connecting portion is connected to the side of the main side wall away from the main bottom wall; the cover body includes a cover top wall and multiple cover side walls, the edges of the multiple cover side walls and the cover top wall are connected, and the cover side walls and the main side walls are abutted.

[0015] To achieve the above object, the utility model provides a solution: a single cell battery, the single cell battery comprising: a core pack and a battery shell as described above, the core pack being arranged in the accommodating cavity of the battery shell.

[0016] The beneficial effects of the utility model are:

[0017] The embodiment of the utility model arranges the main body and the connecting part as an integrally formed structure, so that the battery housing has its own fastener fixing structure, thereby solving the problem of adding a screw fixing structure by welding or other methods after the single cell is produced, thereby simplifying the production process of the battery housing and reducing the production cost of the single cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of a single cell provided in an embodiment of the utility model;

[0020] Figure 2 yes Figure 1 Schematic diagram of the exploded structure of a single cell in FIG.

[0021] Figure 3 It is a schematic diagram of the exploded structure of the battery housing provided by the embodiment of the utility model;

[0022] Figure 4 yes Figure 3 Schematic diagram of the three-dimensional structure of the main shell;

[0023] Figure 5 yes Figure 4Schematic diagram of the exploded structure of the main shell;

[0024] Figure 6 yes Figure 1 A schematic cross-sectional view of a single cell in FIG.

[0025] Figure 7 yes Figure 6 Schematic diagram of the enlarged structure of area B in FIG.

[0026] Explanation of the accompanying drawings: 00, single cell; 100, core pack; 200, battery case; 10, main shell; 12, main body; 121, opening; 123, pole hole; 124, main side wall; 125, main bottom wall; 14, connecting part; 142, through hole; 16, bending part; 20, cover body; 21, cover top wall; 22, cover side wall; 30, pole; 210, accommodating cavity. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0029] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or may be indirectly connected to the other element through an intermediate element.

[0030] See also Figure 1 and Figure 2 , Figure 1 00 is a three-dimensional structural diagram of a single cell 00 provided in an embodiment of the utility model. Figure 2 yes Figure 1 The present invention provides a single battery 00 , which includes a core pack 100 and a battery case 200 . The core pack 100 is assembled in a receiving cavity 210 of the battery case 200 .

[0031] Specifically, the core pack 100 can be a lithium battery, a sodium battery, a lead-acid battery, etc. The core pack 100 is used to store and release electrical energy. There can be multiple core packs 100, and multiple core packs 100 can be electrically connected in series or in parallel or in series and parallel. The core pack 100 is arranged inside the battery housing 200, and the battery housing 200 provides protection for the core pack 100 to prevent the core pack 100 from being damaged by unstable external forces.

[0032] Please continue reading Figure 3 and Figure 4 , Figure 3 2 is a schematic diagram of the exploded structure of the battery housing 200 provided in an embodiment of the utility model. Figure 4 yes Figure 3 The battery housing 200 includes the main housing 10 and the cover 20. The main housing 10 includes a main body 12 and a connecting portion 14. The main body 12 and the connecting portion 14 are an integrally formed structure. The main body 12 is provided with a receiving cavity 210 for receiving the core pack 100. The connecting portion 14 is used to fix the battery housing 200 at a preset position. The cover 20 is connected to the main body 12 and covers the receiving cavity 210.

[0033] Specifically, the main body 12 of the battery housing 200 is provided with a receiving cavity 210 for receiving and protecting the core pack 100, and the connecting portion 14 is connected to the main body 12 for fixing the battery housing 200 to other electronic products. In this way, when the battery of the electronic product needs to be replaced after use, the connection between the connecting portion 14 and the main body of the electronic product can be easily loosened, thereby realizing the detachability of the single battery 00. The embodiment of the utility model sets the main body 12 and the connecting portion 14 as an integrally formed structure, so that the battery housing 200 has a fastener fixing structure, which solves the problem of adding a screw fixing structure by welding or other methods after the single battery 00 is produced, thereby simplifying the production process of the battery housing 200 and reducing the production cost of the single battery 00.

[0034] Please continue reading Figures 1 to 5 , Figure 5 yes Figure 4 The main body 12 is provided with an opening 121 communicating with the accommodating cavity 210 , and the cover 20 closes the opening 121 .

[0035] like Figure 5 As shown, the opening 121 of the main body 12 is connected to the accommodating cavity 210, so that the core package 100 is placed in the accommodating cavity 210 through the opening 121. The cover 20 is connected to the main shell 10 to seal the opening 121 of the accommodating cavity 210 to prevent the electrolyte contained in the accommodating cavity 210 from leaking.

[0036] At present, in the assembly process of the single battery 00, the pole is first assembled to the cover 20, and then the core package 100 is welded to the pole, and finally the cover 20 assembled with the pole and the core package 100 is placed on the opening 121 of the main shell 10 and welded to the main shell 10, at which time the core package 100 is accommodated in the accommodating cavity 210. Since the thickness of the cover 20 is small and the weight of the assembled core package 100 is large, the cover 20 is easily deformed after the core package 100 is assembled, which is not only not conducive to the welding of the cover 20 and the main shell 10, but also inconvenient to store the cover 20 assembled with the pole and the core package 100.

[0037] In this embodiment, if Figure 4 and Figure 5 As shown, the main body 12 is provided with a pole hole 123, and the pole hole 123 is used to assemble the pole 30, and the opening 121 and the pole hole 123 are respectively provided on adjacent sides of the main body 12. Specifically, the pole 30 is inserted into the pole hole 123, and the part of the pole 30 located in the accommodating cavity 210 is connected to the core package 100, and the part of the pole 30 located outside the accommodating cavity 210 is used to connect with the electrical device on the electronic device, that is, the pole 30 is used to electrically connect the core package 100 and the electrical device. Since the opening 121 and the pole hole 123 are respectively located on adjacent sides of the main body 12, the pole 30 and the cover 20 can be respectively installed on adjacent sides of the main body 12. When assembling the single battery 00, the pole 30 is first assembled on the pole hole 123 of the main shell 10, and then the core pack 100 is placed in the accommodating cavity 210, and the core pack 100 is welded to the pole 30. Finally, the cover 20 is covered on the opening 121 of the main shell 10 and welded to the main shell 10. In this way, the difficulty of assembling the single battery 00 can be simplified. Furthermore, since no heavy objects are attached to the cover 20, the storage and transportation of the cover 20 can be more convenient, and deformation of the cover 20 can be avoided to affect the welding connection with the main shell 10.

[0038] Furthermore, if Figure 5 As shown, the connection portion 14 is connected to the edge of the opening 121 of the main body 12 and extends in a direction away from the opening 121 .

[0039] Specifically, the connecting portion 14 has two opposite sides, one of which is connected to the edge of the opening 121 of the main body 12, and the other side extends away from the opening 121 to facilitate connection and fixation with a fastener. By designing the connecting portion 14 to be connected to the edge of the opening 121 of the main body 12, the main body 12 and the connecting portion 14 can be conveniently stamped and formed as one piece.

[0040] The connecting portion 14 may be a thin sheet structure, one side of which may be directly connected to the main body 12. Figure 4The structure of the connecting portion 14 on the right is shown to simplify the processing of the connecting portion 14. Alternatively, one side of the connecting portion 14 can be indirectly connected to the main body 12 through the bending portion 16, as shown in FIG. Figure 4 As shown in the structure of the connecting portion 14 on the left, in this way, the plane where the connecting portion 14 is located can be spaced a certain distance from the plane where the opening 121 is located, so as to facilitate matching with different fastener structures.

[0041] It should be pointed out that in Figure 4 In the embodiment of the present invention, there are two structures of the connection part 14, part of the connection part 14 is directly connected to the main body 12, and part of the connection part 14 is indirectly connected to the main body 12. In other optional embodiments, the connection part 14 can be directly connected to the main body 12, or the connection part 14 can be indirectly connected to the main body 12, which can be determined according to the connection method between the fastener and the main body of the electronic product, and is not specifically limited here.

[0042] Furthermore, in this embodiment, the main body 12 and the connecting portion 14 are integrally stamped, and the wall thickness of the main body 12 is equal to the thickness of the connecting portion 14. By stamping the main shell 10 into an integral structure, the processing technology of the main shell 10 can be simplified, the processing efficiency can be improved, and the production time can be saved, and the processing cost can be reduced.

[0043] Alternatively, the main body 12 and the connecting portion 14 may also be formed by injection molding or sheet metal bending.

[0044] Furthermore, there are multiple connecting parts 14 , and the multiple connecting parts 14 are distributed on one side, two opposite sides, three adjacent sides, or four adjacent sides of the main body 12 .

[0045] Specifically, Figure 5 As shown, the main body 12 is a rectangular structure having four oppositely arranged side edges. In this embodiment, there are four connecting portions 14, which are arranged in pairs on two opposite side edges of the main body 12 so that the opposite ends of the main body 12 are subjected to uniform force.

[0046] Furthermore, if Figure 5 As shown, a through hole 142 is provided on the connection part 14, and the through hole 142 is used for fasteners to pass through. Specifically, the fasteners can be screws, etc., which pass through the through hole 142 and are threadedly connected with the electronic product body to assemble the single battery 00 on the electronic product body. The single battery 00 can be conveniently connected to the electronic product body through the through hole 142 structure provided on the connection part 14.

[0047] The via 142 may be a closed structure or a notched structure. The closed structure may be, for example, circular, elliptical, waist-shaped or polygonal. The notched structure may be, for example, C-shaped or U-shaped. Figure 5 As shown, all the through holes 142 are closed circular structures, so that the assembly of the fasteners is more stable.

[0048] Optionally, the shapes of the vias 142 on the multiple connecting parts 14 connected to the main body 12 can be the same or different. For example, some of the multiple vias 142 can be set as circular vias, and another part of the multiple vias 142 can be set as waist-shaped vias to reduce the processing accuracy of the connecting parts 14, and can be used to match different electronic product bodies.

[0049] Furthermore, each connecting portion 14 in the present embodiment is provided with a via hole 142, or, in other large single battery cells 00, two, three or more via holes 142 may be provided on each connecting portion 14 to increase the connection strength between the connecting portion 14 and the electronic product body, thereby making the connection between the single battery cell 00 and the electronic product body more stable.

[0050] Please continue reading Figure 6 and Figure 7 , Figure 6 yes Figure 1 Schematic diagram of the cross-sectional structure of a single cell in FIG. Figure 7 yes Figure 6 Schematic diagram of the enlarged structure of the B area in FIG. In this embodiment, the main body 12 includes a main bottom wall 125 and a plurality of main side walls 124, the plurality of main side walls 124 and the main bottom wall 125 are connected to form a receiving cavity 210, the plurality of main side walls 124 are connected to form an opening 121, the pole hole 123 is provided on the main side wall 124, and the connecting portion 14 is connected to the side of the main side wall 124 away from the main bottom wall 125. The cover body 20 includes a cover top wall 21 and a cover side wall 22, the cover side wall 22 is connected to the edge of the cover top wall 21, and the cover side wall 22 is abutted against the main side wall 124.

[0051] Specifically, in this embodiment, the main bottom wall 125 is arranged in a rectangular shape, the number of main side walls 124 is four, and the four main side walls 124 are respectively arranged on the four sides of the main bottom wall 125. The cover top wall 21 is arranged in a rectangular shape, the number of cover side walls 22 is four, and the four cover side walls 22 are respectively arranged on the four sides of the cover top wall 21 and connected to the cover top wall 21. When the cover body 20 is covered on the main body 12, the cover side wall 22 is located in the accommodating cavity 210, and the two opposite outer side surfaces of the cover side wall 22 abut against the two inner side surfaces of the main side wall 124.

[0052] Compared with the prior art, the embodiment of the utility model sets the main body 12 and the connecting part 14 as an integrally formed structure, so that the battery housing 200 has its own fastener fixing structure, which solves the problem of adding a screw fixing structure by welding or other methods after the single cell 00 is produced, thereby simplifying the production process of the battery housing 200 and reducing the production cost of the single cell 00.

[0053] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A battery housing, characterized in that: include: A main shell, comprising a main body and a connecting part, wherein the main body and the connecting part are an integrally formed structure, the main body is provided with an accommodating cavity for accommodating the core pack, and the connecting part is used to fix the battery shell at a preset position; and The cover body is connected to the main body and covers the accommodating cavity.

2. The battery housing according to claim 1, characterized in that: The main body is provided with an opening connected with the accommodating cavity, the cover body closes the opening, the main body is provided with a pole hole, the pole hole is used to assemble the pole, and the opening and the pole hole are respectively arranged on adjacent sides of the main body.

3. The battery housing according to claim 1, characterized in that: The connecting portion is connected to the edge of the opening of the main body portion and extends in a direction away from the opening.

4. The battery housing according to claim 1, characterized in that: The main body and the connecting part are an integral stamping structure, and the wall thickness of the main body is equal to the thickness of the connecting part.

5. The battery casing according to any one of claims 1 to 4, characterized in that: There are multiple connecting parts, and the multiple connecting parts are distributed on one side, two opposite sides, three adjacent sides, or four adjacent sides of the main body.

6. The battery casing according to any one of claims 1 to 4, characterized in that: The connecting portion is provided with a through hole, and the through hole is used for a fastener to pass through.

7. The battery casing according to claim 6, characterized in that: The via hole is a closed structure or a notched structure.

8. The battery casing according to any one of claims 1 to 4, characterized in that: The connecting portion is directly connected to the main body; and / or The connecting portion is indirectly connected to the main body portion through a bending portion.

9. The battery casing according to claim 2, characterized in that: The main body comprises a main bottom wall and a plurality of main side walls, the plurality of main side walls and the main bottom wall are connected to form the accommodating cavity, the plurality of main side walls are connected to form the opening, the pole hole is provided on the main side wall, and the connecting portion is connected to a side of the main side wall away from the main bottom wall; The cover body comprises a cover top wall and a plurality of cover side walls, the edges of the plurality of cover side walls and the cover top wall are connected, and the cover side walls abut against the main side walls.

10. A single cell battery, characterized in that: The single battery comprises: a core pack and a battery case according to any one of claims 1 to 9, wherein the core pack is disposed in the accommodation cavity of the battery case.

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