Battery steel shell and battery

Abstract

The utility model aims at providing a battery steel shell and a battery, the battery steel shell comprises a shell cylinder and two end blocks, the shell cylinder comprises a shell piece, at least three folded edges are arranged on the shell piece at intervals, the shell piece is wound into a through pipe shape through the folded edges, two side edges, parallel to the folded edges and distributed oppositely, on the shell piece are connected to form a welding seam, and the two end blocks are arranged on the shell cylinder. The two end blocks are respectively welded at two ends of the shell cylinder, one end block is provided with a positive pole, and the other end block is provided with a liquid injection hole. Therefore, by reducing welding seams, the liquid leakage risk caused by poor welding quality can be effectively reduced, and the structure is more stable; and the positive pole and the liquid injection hole do not need to be extruded on the same end block, so that the overall thickness can be smaller, the size is more compact, and the battery can be applied to intelligent wearing equipment with compact space, such as intelligent glasses.

Description

Technical Field

[0001] This utility model relates to the technical field of batteries, and in particular to a battery steel casing and a battery. Background Technology

[0002] With the development of smart wearable technology, smartwatches, smart bracelets, smart glasses and other smart wearable devices are rapidly being updated and iterated. Among them, the requirements for the batteries used to power smart wearable devices are becoming increasingly stringent.

[0003] To meet the lightweight requirements of smart glasses, the batteries installed in them need to be miniaturized. Currently, there are two main types of batteries used in smart glasses: pouch batteries and steel-cased batteries. Because pouch batteries are wrapped in an aluminum-plastic film, which is relatively flexible and has poor resistance to deformation, many manufacturers prefer to use steel-cased batteries, which have better structural strength.

[0004] However, as Figure 7 As shown, the casing 20 of existing steel-cased batteries is formed by welding a casing plate 21 and a U-shaped body 22. The U-shaped body 22 is formed by stamping using existing stamping technology, which relies on the linear motion of a punch. This means that the U-shaped body 22 and the casing plate 21 are welded twice to form the casing 20. Thus, two weld seams are generated during welding, and an excessive number of weld seams increases the risk of leakage later. Secondly, current steel-cased batteries are relatively large, and the positive electrode and the liquid filling port are almost always located on the same end of the casing 20. Since the positive electrode and the liquid filling port require a certain amount of space, this structure makes it difficult to further reduce the thickness of the steel-cased battery, thus failing to meet the miniaturization requirements for installation in smart glasses. Therefore, to address the aforementioned industry pain points, this application proposes a battery steel casing and battery. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a battery steel shell and battery that can effectively compress volume and improve structural reliability.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A battery steel casing, comprising:

[0008] A shell tube, the shell tube comprising a shell sheet, the shell sheet having at least three folded edges spaced apart, the shell sheet being wound into a tubular shape by means of each of the folded edges, and two sides of the shell sheet parallel to and facing each other on the folded edges being connected to form a weld; and

[0009] Two end blocks are welded to both ends of the shell, one of which is provided with a positive electrode post and the other is provided with a liquid injection hole.

[0010] Optionally, three folds are arranged on the shell sheet, so that the shell sheet is divided into two equal-area wide side blocks and two equal-area narrow side blocks, the two wide side blocks and the two narrow side blocks are staggered in sequence, and the weld seam is located between one of the wide side blocks and one of the narrow side blocks.

[0011] Optionally, four folds are arranged on the shell sheet, so that the shell sheet is divided into a first side block, two equal-area second side blocks and two equal-area third side blocks, the sum of the areas of the two third side blocks is equal to the area of the first side block, and the two third side blocks are arranged in a plane, and the weld seam is located between the two third side blocks.

[0012] Optionally, the weld seam has a Z-shaped structure.

[0013] Optionally, the thickness of the shell sheet is 0.1mm-0.2mm.

[0014] Optionally, the thickness of the shell sheet is 0.12mm.

[0015] Optionally, an insulating ring is arranged between the positive pole and the end block.

[0016] A battery comprises the battery steel shell of any one of the above, and further comprises an electric core, the electric core is accommodated in the battery steel shell, a positive pole of the electric core is electrically connected with the positive pole, and a negative pole of the electric core is electrically connected with the shell cylinder.

[0017] Compared with the prior art, the utility model has at least the following advantages:

[0018] 1. Compared with the prior art, the shell is welded by a surrounding plate and a U-shaped main body, the existing shell has two weld edges, and the shell cylinder of the application has only a single weld seam, so that the risk of liquid leakage caused by poor welding quality can be effectively reduced, and the structure is more stable.

[0019] 2. Compared with the prior art, the positive pole and the liquid injection hole are arranged on the same end block, the positive pole and the liquid injection hole in the battery steel shell of the application do not need to be squeezed on the same end block, so that the overall thickness can be smaller, the volume is more compact, and the battery steel shell can be applied to smart glasses and other smart wearable devices with compact space. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0021] Figure 1 The structure diagram of the battery steel shell of an embodiment of the present application is shown in the figure.

[0022] Figure 2 The structure diagram of the battery steel shell of another embodiment of the present application is shown in the figure. Figure 1 The structure diagram of the battery steel shell of another embodiment of the present application is shown in the figure.

[0023] Figure 3 The structure diagram of the shell piece of an embodiment of the present application is shown in the figure.

[0024] Figure 4 The structure diagram of the shell cylinder of an embodiment of the present application is shown in the figure.

[0025] Figure 5 The structure diagram of the shell piece of another embodiment of the present application is shown in the figure.

[0026] Figure 6 The structure diagram of the shell cylinder of another embodiment of the present application is shown in the figure.

[0027] Figure 7 The sectional view of the surrounding shell of the prior art is shown in the figure.

[0028] Explanation of reference signs:

[0029] 10, battery steel shell; 100, shell cylinder; 200, end block; 110, shell piece; 120, folded edge; 130, weld; 300, positive pole; 210, liquid injection hole; 111, wide side block; 112, narrow side block; 113, first side block; 114, second side block; 115, third side block. DETAILED DESCRIPTION

[0030] In order to facilitate the understanding of the present application, the following will comprehensively describe the present application with reference to the related drawings. The preferred embodiments of the present application are shown in the drawings.

[0031] In the description of the embodiments of the utility model, it is understood that the directions or position relations indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are the directions or position relations shown based on the drawings, and are only for the convenience of describing the embodiments of the utility model and simplifying the description, and thus cannot be understood as indicating or implying that the devices or elements indicated must have a specific direction, be constructed and operated in a specific direction, and thus cannot be understood as limiting the utility model.

[0032] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the utility model, the meaning of "multiple" is two or more than two, unless otherwise explicitly specified and limited.

[0033] In the embodiments of the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, can also be detachably connected; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the embodiments of the utility model can be understood according to the specific circumstances.

[0034] As shown in Figures 1 to 7 A battery steel shell 10, including shell cylinder 100 and two end blocks 200, the shell cylinder 100 includes shell sheet 110, at least three flanges 120 are arranged at intervals on the shell sheet 110, the shell sheet 110 is wound into a tubular shape through each flange 120, two side edges parallel to the flange 120 and oppositely distributed on the shell sheet 110 are connected to form a weld 130, two end blocks 200 are welded at both ends of the shell cylinder 100, one of the end blocks 200 is provided with a positive pole 300, and the other end block 200 is provided with a liquid injection hole 210.

[0035] It should be noted that the shell piece 120 is in a flat state of the shell cylinder 100, and the shell cylinder 100 is in a winding state of the shell piece 120. The shell piece 110 is bent at the positions of the folds 120, wherein the folds 120 have at least three, so that the shell piece 110 is wound into a tubular shape under the bending action of each fold 120, and the two side edges of the shell piece 110 distributed in opposite directions in parallel with the folds 120 are in contact, and the two side edges in contact are welded and fixed by using a welding gun to form a weld 130. In this way, the shell piece 110 is wound and welded into a tubular shell cylinder 100. In this way, compared with the prior art in which the surrounding shell 20 is welded by the surrounding plate 21 and the U-shaped main body 22, the existing surrounding shell 20 has two welds, while the shell cylinder 100 of the present application has only a single weld 130, and by reducing the weld 130, the risk of liquid leakage due to poor welding quality can be effectively reduced. Further, the two end blocks 200 are welded on the two ends of the shell cylinder 100, respectively, so that the shell cylinder 100 and the two end blocks 200 form a sealed battery steel shell 10. One of the end blocks 200 is provided with a positive pole 300, and the other end block 200 is provided with a liquid injection hole 210. In this way, compared with the prior art structure in which the positive pole 300 and the liquid injection hole 210 are arranged on the same end block 200, the positive pole 300 and the liquid injection hole 210 in the battery steel shell 10 of the present application do not need to be crowded on the same end block 200, so that the overall thickness can be smaller and the volume is more compact, thereby being able to be applied to smart glasses and other smart wearable devices with compact space.

[0036] As shown in Figure 3 and Figure 4 In an embodiment, three folds 120 are arranged on the shell piece 110, so that the shell piece 110 is divided into two equal-area wide side blocks 111 and two equal-area narrow side blocks 112, and the two wide side blocks 111 and the two narrow side blocks 112 are staggered in sequence, and the weld 130 is located between one of the wide side blocks 111 and one of the narrow side blocks 112.

[0037] It should be noted that in this embodiment, the shell piece 110 has three folds 120, so that the shell piece 110 is divided into two wide side blocks 111 and two narrow side blocks 112 by the three folds 120, wherein the areas of the two wide side blocks 111 are consistent, the areas of the two narrow side blocks 112 are consistent, and the width of the wide side block 111 is greater than the width of the narrow side block 112. In this way, the shell piece 110 is bent along each fold 120 and wound into a cuboid shell cylinder 100, and the weld 130 is one of the right-angle edges of the shell cylinder 100.

[0038] As shown in Figure 5 and Figure 6As shown, in an embodiment, the shell sheet 110 is provided with four folding edges 120, so that the shell sheet 110 is divided into a first side block 113, two second side blocks 114 of equal area, and two third side blocks 115 of equal area, and the sum of the areas of the two third side blocks 115 is equal to the area of the first side block 113, and the two third side blocks 115 are coplanarly arranged, and the welding seam 130 is located between the two third side blocks 115.

[0039] It should be noted that in this embodiment, the shell sheet 110 has four folding edges 120, so that the shell sheet 110 is divided into five parts by the folding edges 120, wherein the sum of the areas of the two third side blocks 115 is equal to the area of the first side block 113, and the width of the first side block 113 is greater than the width of the second side block 114, and the two third side blocks 115 are coplanarly arranged. In this way, after the shell sheet 110 is bent along the folding edges 120, it is wound into a cuboid shell cylinder 100, and the welding seam 130 is located on one side of the cuboid shell cylinder 100.

[0040] As shown in FIGS. Figure 5 and Figure 6 As shown, in an embodiment, the welding seam 130 has a Z-shaped structure. It should be noted that in the embodiment in which the two third side blocks 115 are coplanarly arranged, the welding seam 130 is provided with a Z-shaped structure, so that the bending strength of the welding seam 130 can be improved, and the two third side blocks 115 are prevented from being deformed by bending along a linear welding seam 130.

[0041] In an embodiment, the thickness of the shell sheet 110 is 0.1mm-0.2mm. For example, the thickness of the shell sheet 110 can be 0.12mm. In this way, by reducing the thickness of the shell sheet 110, the overall thickness and width of the battery steel shell 10 can be further reduced.

[0042] In an embodiment, an insulating ring is arranged between the positive pole 300 and the end block 200. Specifically, a through hole is formed in the end block 200, the insulating ring is installed in the through hole, and the positive pole 300 is installed in the insulating ring, so that the positive pole 300 is isolated from the end block 200, and short circuiting between the two is avoided. For example, the insulating ring is made of plastic.

[0043] A battery includes a battery steel shell 10 and a battery cell, the battery cell is contained in the battery steel shell 10, the positive pole of the battery cell is electrically connected with the positive pole 300, and the negative pole of the battery cell is electrically connected with the shell cylinder 100.

[0044] In this way, the battery composed of the battery steel shell 10 of the present application has a compact structure and is suitable for smart wearable devices in compact spaces such as smart glasses.

[0045] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not therefore be understood as the limitation of the utility model patent range. Among them, the installation / fixed / setting in the utility model is understood as including but not limited to the locking and fixing by using screw / screw, welding unless otherwise defined. It should be pointed out that for ordinary skilled person in the art, without departing from the concept of the utility model, several modifications and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. A battery steel can characterized by, The battery steel shell comprises: a shell cylinder comprising shell sheets, at least three of which are provided with flanges at intervals, the shell sheets are wound into a tubular shape through the flanges, and two side edges of the shell sheets, which are parallel to the flanges and oppositely distributed, are connected to form a weld seam; and two end blocks, two of which are welded to two ends of the shell cylinder, one of which is provided with a positive pole, and the other of which is provided with a liquid injection hole.

2. The battery can according to claim 1, wherein The shell sheets are provided with three flanges, so that the shell sheets are divided into two wide side blocks and two narrow side blocks, the two wide side blocks and the two narrow side blocks are staggered in sequence, and the weld seam is located between one of the wide side blocks and one of the narrow side blocks.

3. The battery can according to claim 1, wherein The shell sheets are provided with four flanges, so that the shell sheets are divided into a first side block, two second side blocks and two third side blocks, the sum of the areas of the two third side blocks is equal to the area of the first side block, and the two third side blocks are coplanar, and the weld seam is located between the two third side blocks.

4. The battery can according to claim 3, wherein The weld seam is in a Z-shaped structure.

5. The battery can according to claim 1, wherein The thickness of the shell sheets is 0.1mm-0.2mm.

6. The battery can according to claim 5, wherein The thickness of the shell sheets is 0.12mm.

7. The battery can according to claim 1, wherein An insulating ring is arranged between the positive pole and the end block.

8. A battery, characterized by The battery steel shell comprises: a shell cylinder comprising shell sheets, at least three of which are provided with flanges at intervals, the shell sheets are wound into a tubular shape through the flanges, and two side edges of the shell sheets, which are parallel to the flanges and oppositely distributed, are connected to form a weld seam; and two end blocks, two of which are welded to two ends of the shell cylinder, one of which is provided with a positive pole, and the other of which is provided with a liquid injection hole. The shell sheets are provided with three flanges, so that the shell sheets are divided into two wide side blocks and two narrow side blocks, the two wide side blocks and the two narrow side blocks are staggered in sequence, and the weld seam is located between one of the wide side blocks and one of the narrow side blocks. The shell sheets are provided with four flanges, so that the shell sheets are divided into a first side block, two second side blocks and two third side blocks, the sum of the areas of the two third side blocks is equal to the area of the first side block, and the two third side blocks are coplanar, and the weld seam is located between the two third side blocks. The weld seam is in a Z-shaped structure. The thickness of the shell sheets is 0.1mm-0.2mm. The thickness of the shell sheets is 0.12mm. An insulating ring is arranged between the positive pole and the end block. The battery steel shell comprises: a shell cylinder comprising shell sheets, at least three of which are provided with flanges at intervals, the shell sheets are wound into a tubular shape through the flanges, and two side edges of the shell sheets, which are parallel to the flanges and oppositely distributed, are connected to form a weld seam; and two end blocks, two of which are welded to two ends of the shell cylinder, one of which is provided with a positive pole, and the other of which is provided with a liquid injection hole. The shell sheets are provided with three flanges, so that the shell sheets are divided into two wide side blocks and two narrow side blocks, the two wide side blocks and the two narrow side blocks are staggered in sequence, and the weld seam is located between one of the wide side blocks and one of the narrow side blocks. The shell sheets are provided with four flanges, so that the shell sheets are divided into a first side block, two second side blocks and two third side blocks, the sum of the areas of the two third side blocks is equal to the area of the first side block, and the two third side blocks are coplanar, and the weld seam is located between the two

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