Battery shell and battery

Abstract

The utility model relates to the technical field of new energy, particularly provides a battery shell and a battery, and aims to solve the problem that an existing supporting piece is easy to bend and deform. Therefore, the battery shell disclosed by the utility model comprises a shell and a supporting piece arranged in the shell, the supporting piece is attached to the inner surface of the shell, the supporting piece is fixedly connected with the shell, and the supporting piece is provided with a convex part. By arranging the protruding part on the supporting piece, bending deformation of the supporting piece can be effectively prevented, the structural strength of the supporting piece is enhanced, the supporting effect on the shell is further enhanced, and deformation of the shell is effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy, and specifically provides a battery housing and a battery. Background Art

[0002] With the improvement of people's living standards and the development of society, traditional energy is gradually being eliminated, and new energy is gradually gaining people's attention, including batteries.

[0003] The existing battery includes a shell and a battery cell contained in the shell. In order to increase the energy density of the battery, the shell is usually designed to be thinner to occupy a smaller space. However, when the shell is thin, some areas are easily deformed due to insufficient strength, thereby affecting the overall structural stability of the battery. In order to enhance the structural strength of the shell, reinforcing ribs are usually provided in the deformed area of ​​the shell. However, the existing reinforcing ribs are usually flat and easily bent and deformed, thereby affecting the support and stability of the shell.

[0004] Therefore, this field needs a new technical solution to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the above technical problem, that is, to solve the problem that the existing support members are prone to bending and deformation.

[0006] In a first aspect, the utility model provides a battery housing, comprising a housing and a support member disposed inside the housing, wherein the support member is abutted against an inner surface of the housing, the support member is fixedly connected to the housing, and the support member is provided with a protrusion.

[0007] When the above technical solution is adopted, by providing a protrusion on the support member, the support member can be effectively prevented from bending and deforming, the structural strength of the support member can be enhanced, and the supporting effect on the shell can be enhanced, effectively preventing the shell from deforming.

[0008] In the preferred technical solution of the above battery housing, the protrusions are provided in plurality and are arranged in sequence and at intervals.

[0009] In a preferred technical solution of the above battery housing, the support member is provided with a first through hole, and the housing is provided with a second through hole opposite to the first through hole.

[0010] In the preferred technical solution of the above battery housing, the radius of the first through hole is r, wherein 2mm≤r≤15mm.

[0011] In the preferred technical solution of the above battery casing, the thickness of the support member is t, wherein 0.3 mm≤t≤1.5 mm.

[0012] In the preferred technical solution of the above battery housing, the support member is made of aluminum.

[0013] In the preferred technical solution of the above battery housing, the housing is made of aluminum.

[0014] In the preferred technical solution of the above battery housing, the protrusion is semicircular.

[0015] In a preferred technical solution of the above battery housing, in the length direction of the housing, the support member is located at the end of the housing.

[0016] In a second aspect, the utility model further provides a battery, comprising the above-mentioned battery housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0018] Figure 1 It is a three-dimensional diagram of the battery housing of the utility model;

[0019] Figure 2 It is a partial enlarged view of the battery housing of the utility model;

[0020] Figure 3 yes Figure 2 An exploded view of the battery housing of the utility model is shown;

[0021] Figure 4 It is a three-dimensional diagram of the support member of the utility model.

[0022] List of reference numerals:

[0023] 100. Battery case; 1. Case; 11. First wall; 111. Second through hole; 12. Second wall; 13. Third wall; 2. First insulating member; 21. Third through hole; 3. Pole assembly; 31. Electrical connecting piece; 32. Pole; 33. Conductive block; 34. Second insulating member; 4. Support member; 41. First through hole; 42. Protrusion. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0025] It should be noted that in the description of the present invention, the terms "inside", "outside", "upper", "lower", "top", "bottom", "left", "right", "front", "back" and other terms indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0026] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "connect", and "install" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Specifically, see first Figures 1 to 4 , Figure 1 It is a three-dimensional diagram of the battery housing of the utility model. Figure 2 This is a partial enlarged view of the battery housing of the utility model. Figure 3 yes Figure 2 The exploded view of the battery housing of the utility model is shown. Figure 4 It is a three-dimensional diagram of the support member of the utility model.

[0028] like Figures 1 to 4 As shown, the battery housing 100 provided by the present invention comprises a housing 1 and a support member 4 disposed inside the housing 1 , wherein the support member 4 is attached to the inner surface of the housing 1 .

[0029] In one embodiment, the support member 4 is disposed at any position inside the housing 1, preferably at a position that is easily deformed inside the housing 1, to strengthen the position. Further, the support member 4 can be disposed on the inner wall at one or both ends of the length direction of the housing 1, or on the inner wall at one or both ends of the width direction of the housing 1, or on the inner wall at one or both ends of the thickness direction of the housing 1, etc. The user can select the setting as needed, and no specific limitation is made here.

[0030] In this embodiment, the support member 4 is disposed on the inner wall of one end of the housing 1 in the length direction. For the convenience of description, the following description is based on this embodiment.

[0031] By arranging a support member 4 inside the shell 1, the support member 4 is abutted against the inner surface of the shell 1, and the support member 4 is fixedly connected to the inner wall of the shell 1, such as by welding, etc., the structural strength of the shell 1 can be significantly enhanced, the shell 1 can be prevented from deformation, the structural stability of the battery can be ensured, and the service life can be extended.

[0032] In one embodiment, if Figures 1 to 3 As shown, the housing 1 includes a first wall 11 , a second wall 12 and a third wall 13 .

[0033] Preferably, two first walls 11 are provided and are respectively located at two opposite ends of the second wall 12, and two third walls 13 are provided and are respectively located at the other opposite ends of the second wall 12. The two first walls 11 and the two third walls 13 are arranged in sequence and arranged in a ring to surround the second wall 11, so as to form a shell 1.

[0034] In a specific embodiment, the second wall 12 is located at one end surface of the shell 1 in the thickness direction, and the second wall 12 is the surface with the largest area of ​​the shell 1; the two first walls 11 are located at both ends of the second wall 12 in the length direction, and the two third walls 13 are located at both ends of the second wall 12 in the width direction.

[0035] In a specific embodiment, the first wall 11, the second wall 12 and the third wall 13 are integrally formed, thereby simplifying the difficulty of the manufacturing process and improving the manufacturing efficiency. In other embodiments, the first wall 11, the second wall 12 and the third wall 13 can also be fixedly connected by other methods, such as welding, etc. The user can choose the setting according to needs, and no specific limitation is made here.

[0036] Specifically, the first wall surface 11 , the second wall surface 12 and the third wall surface 13 form a receiving cavity for receiving the battery cell.

[0037] In one embodiment, if Figure 3 and Figure 4 As shown, a protrusion 42 is provided on the support member 4.

[0038] In a specific embodiment, the protrusion 42 is formed by protruding outward from the surface of the support member 4. The provision of the protrusion 42 can effectively enhance the structural strength of the support member 4 to prevent its deformation, thereby effectively preventing the shell 1 from deforming.

[0039] In a specific embodiment, the support member 4 includes a first surface abutting against the inner surface of the shell 1 and a second surface opposite to the first surface, and the protrusion 42 is arranged on the second surface. Since the first surface is a plane, it can fit tightly on the inner surface of the shell 1, such as the first wall 11, so that the connection between the support member 4 and the shell 1 is more stable, and the protrusion 42 can effectively prevent the support member 4 from bending.

[0040] In a specific embodiment, the support member 4 includes a first surface abutting against the inner surface of the shell 1 and a second surface opposite to the first surface, and the protrusion 42 is arranged on the first surface and the second surface, thereby effectively enhancing the structural strength of the support member 4 to prevent deformation of the shell 1.

[0041] In one embodiment, a plurality of protrusions 42 are provided and are arranged in sequence at intervals.

[0042] In a specific embodiment, a plurality of protrusions 42 are arranged end to end in a longitudinal direction of the support member 4. Figure 4 As shown, the protrusion 42 is extended along the width direction of the support member 4, which can significantly enhance the bending resistance of the support member 4.

[0043] In a specific embodiment, a plurality of protrusions 42 are arranged in sequence and spaced apart along the length direction of the support member 4, and the protrusions 42 extend along the width direction of the support member 4, thereby reducing material usage to reduce costs and achieving stable support for the shell 1 to prevent its deformation.

[0044] In one embodiment, the support member 4 is provided with a first through hole 41 , and the housing 1 is provided with a second through hole 111 opposite to the first through hole 41 .

[0045] In a specific embodiment, the first through hole 41 passes through the surface of the support member 4. Further, the housing 1 is provided with a second through hole 111, which passes through the inner and outer surfaces of the housing 1, and when the support member 4 is attached to the inner surface of the housing 1, the first through hole 41 is connected with the second through hole 111, so as to allow the pole assembly 3 to pass through.

[0046] In a specific embodiment, the second through hole 111 is preferably disposed on the first wall surface 11 .

[0047] In a specific embodiment, a plurality of first through holes 41 may be provided and arranged in sequence on the first wall surface 11. Furthermore, the number of second through holes 111 is the same as the number of first through holes 41 and corresponds one to one, so as to facilitate the passage of multiple pole assemblies 3.

[0048] In one embodiment, the radius of the first through hole 41 is r, wherein 2 mm≤r≤15 mm.

[0049] Preferably, the radius r of the first through hole 41 can be any value between 2mm and 15mm, for example, it can be 2mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, 2.6mm, 2.7mm, 2.8mm, 2.9mm, 3.0mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm, 9mm, 9.5mm, 10mm, 10.5mm, 11mm, 11.5mm, 12mm, 12.5mm, 13mm, 13.5mm, 14mm, 14.5mm, 15mm, etc. The user can choose the setting as needed, and no specific limitation is made here.

[0050] By limiting the radius r of the first through hole 41 to the above range, on the one hand, it can prevent the radius of the first through hole 41 from being too small so that the pole assembly 2 cannot pass through, and on the other hand, it can prevent the radius of the first through hole 41 from being too large so that the structural stability is reduced.

[0051] In one embodiment, the thickness of the support member 4 is t, wherein 0.3 mm ≤ t ≤ 1.5 mm. Figure 4 shown.

[0052] Preferably, the thickness t of the support member 4 can be any value between 0.3mm and 1.5mm, for example, it can be 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, etc. The user can choose the setting as needed, and no specific limitation is made here.

[0053] By limiting the range of the thickness t of the support member 4 as above, on the one hand, it can prevent the thickness t of the support member 4 from being too small to affect the supporting and stabilizing effect on the shell 1, and on the other hand, it can prevent the thickness t of the support member 4 from being too large to occupy a larger volume and increase the production cost.

[0054] In one embodiment, the support member 4 is made of aluminum, and the shell 1 is made of aluminum.

[0055] Specifically, since the support member 4 and the shell 1 are made of the same material, namely aluminum, the support member 4 and the shell 1 can be fixed by welding, thereby simplifying the method of fixing the support member 4 and the shell 1 and improving the structural stability.

[0056] In other embodiments, the support member 4 and the housing 1 may also be made of other materials, which are not specifically limited herein.

[0057] In one embodiment, the protrusion 42 is semicircular.

[0058] By limiting the protrusion 42 to a semicircular shape, the support member 4 can be effectively prevented from bending and deforming, and the material consumption and cost can be reduced.

[0059] In other embodiments, the protrusion 42 may also adopt other geometric shapes, which are not specifically limited here.

[0060] In one embodiment, in the length direction of the shell 1 , the support member 4 is located at the end of the shell 1 .

[0061] Specifically, the length direction is the length direction of the housing 1. Figure 2 The left and right direction in .

[0062] Furthermore, the support member 4 is arranged at the end of the shell 1 in the length direction, so as to provide a stable support for the first wall 11 of the shell 1 with the smallest area to prevent it from deformation. At the same time, the support member 4 is small in size, reducing the volume it occupies to improve the energy density of the battery.

[0063] In one embodiment, if Figures 1 to 3 As shown, the battery housing further includes a first insulating member 2 and a pole assembly 3 .

[0064] Preferably, the pole assembly 3 includes an electrical connection sheet 31 accommodated in the shell 1 , a pole 32 arranged on the electrical connection sheet 31 , a conductive block 33 arranged outside the shell 1 , and a second insulating member 34 arranged between the conductive block 33 and the shell 1 .

[0065] Furthermore, the electrical connection sheet 31 is received in the housing 1 to be electrically connected to the tabs of the battery cell in the housing 1 , such as by welding and fixing.

[0066] Furthermore, part of the first insulating member 2 is located between the electrical connection piece 31 and the support member 4, thereby providing insulation between the electrical connection piece 31 and the support member 4. The first insulating member 2 is provided with a third through hole 21, which is arranged opposite to and connected to the first through hole 41.

[0067] More specifically, the pole 32 is disposed on the electrical connection sheet 31. The pole 32 and the electrical connection sheet 31 can be integrally formed or welded to each other. The connection method between the pole 32 and the electrical connection sheet 31 can be selected and set as needed and is not specifically limited here.

[0068] Furthermore, the pole 32 passes through the third through hole 21 , the first through hole 41 and the second through hole 111 respectively, and one end of the pole 32 extends to the outside of the housing 1 , so as to facilitate electrical connection with an external busbar or other conductive parts.

[0069] Furthermore, the conductive block 33 is located outside the shell 1, and the end of the pole 32 extending outside the shell 1 passes through the conductive block 33 and is fixedly connected to it, such as by riveting, etc., so that the pole 32 and the conductive block 33 are fixedly connected, and electrical energy can be transmitted to the conductive block 33.

[0070] More specifically, the pole 32 passes through the second insulating member 34 , and a portion of the second insulating member 34 is located between the conductive block 33 and the outer wall of the housing 1 , thereby achieving insulation between the conductive block 33 and the housing 1 .

[0071] Furthermore, the other part of the second insulating member 34 is located between the pole 32 and the inner wall of the second through hole 111 , thereby achieving insulation between the pole 32 and the housing 1 and preventing the housing 1 from being charged.

[0072] In one embodiment, a sealing ring is provided between the pole 32 and the housing 1 and / or between the electrical connection piece 31 and the first insulating member 2 or the support member 4 to achieve sealing of the pole assembly 3, which belongs to the prior art and will not be described in detail here.

[0073] In one embodiment, the utility model further provides a battery, and the battery includes the battery housing 100 mentioned above.

[0074] Those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present application and form different embodiments. For example, in the claims of the present application, any one of the claimed embodiments may be used in any combination.

[0075] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A battery housing, characterized in that: It comprises a shell and a support member arranged inside the shell, wherein the support member is close to the inner surface of the shell, the support member is fixedly connected to the shell, and the support member is provided with a protrusion.

2. The battery housing according to claim 1, characterized in that: The protrusions are provided in plurality and are arranged in sequence and at intervals.

3. The battery housing according to claim 1, characterized in that: The support member is provided with a first through hole, and the housing is provided with a second through hole opposite to the first through hole.

4. The battery case according to claim 3, characterized in that: The radius of the first through hole is r, wherein 2mm≤r≤15mm.

5. The battery casing according to claim 4, characterized in that: The thickness of the support member is t, wherein 0.3 mm ≤ t ≤ 1.5 mm.

6. The battery casing according to claim 5, characterized in that: The support member is made of aluminum.

7. The battery casing according to claim 6, characterized in that: The shell is made of aluminum.

8. The battery casing according to claim 1, characterized in that: The protrusion is semicircular.

9. The battery casing according to claim 1, characterized in that: In the length direction of the shell, the support member is located at the end of the shell.

10. A battery, characterized in that: A battery casing comprising the battery casing according to any one of claims 1 to 9.

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