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 the strength of the conventional battery shell is not enough. Therefore, the utility model provides a battery shell which comprises a shell and a supporting piece arranged in the shell, the shell comprises a first wall and a second wall, the supporting piece comprises a first supporting part attached to the first wall and a second supporting part attached to the second wall, and the supporting piece further comprises a third supporting part, and the third supporting part is respectively connected with the first supporting part and the second supporting part. The third supporting part is arranged between the first supporting part and the second supporting part, so that the first supporting part, the second supporting part and the shell can be supported more stably, and deformation of the first supporting part, the second supporting part and 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 popularity of new energy vehicles, the cruising range of new energy vehicles has become an important indicator that people pay close attention to. The cruising range is usually determined by the power of the lithium battery, which in turn is determined by the volume and energy density of the lithium battery. In order to increase the energy density of the lithium battery, the shell can be designed to be thinner. However, when the shell is thin, some areas are prone to deformation due to insufficient strength, which in turn affects the overall structural stability of the lithium battery.

[0003] Therefore, this field needs a new technical solution to solve the above problems. Utility Model Content

[0004] The utility model aims to solve the above technical problem, that is, to solve the problem that some areas of the existing battery housing are not strong enough and deformed.

[0005] In a first aspect, the utility model provides a battery case, comprising a case and a support member arranged inside the case, the case comprising a first wall and a second wall, the support member comprising a first support portion abutting against the first wall and a second support portion abutting against the second wall, the support member further comprising a third support portion, the third support portion being respectively connected to the first support portion and the second support portion.

[0006] In the preferred technical solution of the above battery housing, the angle between the first supporting portion and the second supporting portion is a, wherein 80°≤a≤100°.

[0007] In the preferred technical solution of the above battery housing, the third supporting portion is in the shape of a triangle.

[0008] In the preferred technical solution of the above battery housing, the thickness of the third supporting portion is h1, wherein 0.3 mm ≤ h1 ≤ 1.5 mm.

[0009] In a preferred technical solution of the battery housing, a curved portion is provided between the first supporting portion and the second supporting portion, and a curvature radius of the curved portion is r1, wherein 0.5 mm≤r1≤5 mm.

[0010] In a preferred technical solution of the above battery housing, the first supporting portion is provided with a first through hole, and the housing is provided with a second through hole communicating with the first through hole.

[0011] In the preferred technical solution of the above battery housing, the radius of the first through hole is r2, wherein 2mm≤r2≤15mm.

[0012] In the preferred technical solution of the above battery housing, the thickness of the support member is h2, wherein 0.3 mm ≤ h2 ≤ 1.5 mm.

[0013] In the preferred technical solution of the above battery housing, a plurality of the third supporting parts are provided and are arranged in sequence at intervals.

[0014] In a second aspect, the utility model further provides a battery, comprising the above-mentioned battery housing.

[0015] When the above technical solution is adopted, the battery shell of the utility model can provide a more stable support for the shell and effectively prevent the shell from deforming by arranging a support member inside the shell, and the support member includes a first support portion abutting against the first wall of the shell and a second support portion abutting against the second wall of the shell, and a third support portion is arranged between the first support portion and the second support portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0017] Figure 1 It is a three-dimensional diagram of the battery housing of the utility model;

[0018] Figure 2 It is a partial enlarged view of the battery housing of the utility model;

[0019] Figure 3 yes Figure 2 An exploded view of the battery housing of the utility model is shown;

[0020] Figure 4 It is a three-dimensional diagram of the support member of the utility model.

[0021] List of reference numerals:

[0022] 100. Battery case; 1. Case; 11. Second wall; 12. First wall; 121. Second through hole; 13. Third wall; 2. Support member; 21. First support portion; 211. First through hole; 22. Second support portion; 23. Bend portion; 24. Third support portion; 3. First insulating member; 31. Third through hole; 4. Pole assembly; 41. Electrical connection piece; 42. Pole; 43. Conductive block; 44. Second insulating member. DETAILED DESCRIPTION

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] like Figures 1 to 4 As shown, the battery housing of the present invention comprises a housing 1 and a support member 2 arranged inside the housing 1 .

[0028] Preferably, the support member 2 is arranged at any position inside the shell 1, such as on the inner wall at one or both ends in the length direction of the shell 1, or on the inner wall at one or both ends in the width direction of the shell 1, or on the inner wall at one or both ends in the thickness direction of the shell 1, etc. The user can choose the setting according to needs, and no specific limitation is made here.

[0029] By arranging a support member 2 inside the shell 1 and fixing the support member 2 to the inner wall of the shell 1, such as by welding, the structural strength of the shell 1 can be increased, deformation of the shell 1 can be prevented, and the structural stability and service life of the battery can be ensured.

[0030] In one embodiment, if Figure 1 As shown, the housing 1 includes a second wall 11 , a first wall 12 disposed at two opposite ends of the second wall 11 , and a third wall 13 disposed at the other two opposite ends of the second wall 11 .

[0031] In a specific embodiment, the second wall 11 is an end face located in the thickness direction of the shell 1, and the second wall 11 is the face with the largest area of ​​the shell 1; the two first walls 12 are located at the two ends of the second wall 11 in the length direction, and the two third walls 13 are located at the two ends of the second wall 11 in the width direction. The two first walls 12 and the two third walls 13 are arranged in sequence to form a ring around the second wall 11, thereby forming the shell 1.

[0032] Preferably, the first wall 12, the second wall 11, and the third wall 13 are integrally formed, thereby simplifying the difficulty of the manufacturing process and improving manufacturing efficiency. In other embodiments, the first wall 12, the second wall 11, and the third wall 13 can also be fixedly connected in other ways, such as welding, etc. The user can choose the setting as needed, and no specific limitation is made here.

[0033] Preferably, the first wall 12 , the second wall 11 , and the third wall 13 form a receiving cavity, and the receiving cavity is used to receive the battery cell.

[0034] In one embodiment, if Figures 2 to 4 As shown, the support member 2 includes a first support portion 21 and a second support portion 22 . The first support portion 21 is abutted against the first wall 12 , and the second support portion 22 is abutted against the second wall 11 , thereby supporting the first wall 12 and the second wall 11 .

[0035] The support member 2 is fixedly connected to the housing 1, specifically: the first support portion 21 is fixedly connected to the first wall 12; or, the second support portion 22 is fixedly connected to the second wall 11; or, the first support portion 21 is fixedly connected to the first wall 12 and the second support portion 22 is fixedly connected to the second wall 11. The user can select the setting as needed, and no specific limitation is made here.

[0036] Furthermore, the above-mentioned fixed connection can be welding, or other existing fixed connection methods, and the user can choose to set it according to needs, which is not specifically limited here.

[0037] In this embodiment, the first wall 12 and the second wall 11 are easily deformed due to their weak strength, so they can be supported and strengthened by the first support portion 21 and the second support portion 22 to prevent them from deforming. In other embodiments, the first support portion 21 and the second support portion 22 can also be attached to other easily deformable walls of the housing 1, and the user can choose to set them as needed, which is not specifically limited here.

[0038] Preferably, the first support portion 21 and the second support portion 22 are integrally formed and are "L"-shaped, so as to support the adjacent first wall 12 and the second wall 11, simplify the process steps, reduce the process difficulty, and improve the structural strength.

[0039] Furthermore, the support member 2 also includes a third support portion 24, which is arranged between the first support portion 21 and the second support portion 22, and is fixedly connected to the first support portion 21 and the second support portion 22 respectively, thereby achieving a supporting effect on the first support portion 21 and the second support portion 22, and further achieving a supporting effect on the first wall 12 and the second wall 11.

[0040] Preferably, the third support portion 24 is located between the "L"-shaped first support portion 21 and the second support portion 22, one end of the third support portion 24 is fixedly connected to the first support portion 21, and the other end of the third support portion 24 is fixedly connected to the second support portion 22, thereby providing a stable support for the first support portion 21 and the second support portion 22, thereby enhancing the structural strength of the shell 1 and preventing it from deformation.

[0041] More preferably, the first support portion 21 , the second support portion 22 and the third support portion 24 may be integrally formed, or may be fixedly connected by existing fixed connection methods, such as welding.

[0042] In one embodiment, the angle between the first support portion 21 and the second support portion 22 is a, wherein 80°≤a≤100°. Figure 4 shown.

[0043] Preferably, the angle a can be any value between 80° and 100°, for example, it can be 81°, 82°, 83°, 84°, 85°, 86°, 87°, 88°, 89°, 90°, 91°, 92°, 93°, 94°, 95°, 96°, 97°, 98°, 99°, 100°, etc. The user can choose the setting as needed, and no specific limitation is made here.

[0044] Preferably, when the angle a between the first support portion 21 and the second support portion 22 is between 80° and 100°, it can not only prevent the interference of the shell 1 due to a large angle between the two, but also prevent the interference of the internal structure of the shell 1 due to a small angle between the two. At the same time, it can reduce the occupied volume and improve space utilization and energy density.

[0045] More preferably, the included angle a between the first support portion 21 and the second support portion 22 is 90°, so that they can be fully attached to the first wall 12 and the second wall 11 respectively to achieve the supporting effect thereon and effectively prevent them from deformation.

[0046] In one embodiment, the third support portion 24 is triangular. Figure 4 shown.

[0047] Preferably, the third support portion 24 is triangular in shape and can provide stable support for the first support portion 21 and the second support portion 22, respectively, effectively preventing deformation of the third support portion 24, while reducing the volume occupied by the third support portion 24 and preventing interference with other structures, thereby ensuring structural stability and space utilization.

[0048] In other embodiments, the third support portion 24 may also be a cuboid or other geometric shapes, etc. The user may select and configure the shape as required, and no specific limitation is made herein.

[0049] In one embodiment, the thickness of the third support portion 24 is h1, wherein 0.3 mm ≤ h1 ≤ 1.5 mm. Figure 4 shown.

[0050] Preferably, the thickness 4 h1 of the third support portion 24 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.

[0051] More preferably, the above range is limited by the thickness h1 of the third support portion 24. On the one hand, it can prevent the third support portion 24 from being too thin to affect the stability of the support for the first support portion 21 and the second support portion 22. On the other hand, it can prevent the third support portion 24 from being too thick to occupy a larger volume or interfere with other structures, affecting the space utilization and energy density of the battery.

[0052] In one embodiment, one third supporting portion 24 may be provided, or a plurality of third supporting portions 24 may be provided and arranged in sequence and at intervals.

[0053] Preferably, when only one third support portion 24 is provided, it can not only reduce the cost but also simplify the structure, improve the space utilization, and increase the energy density of the battery.

[0054] More preferably, a plurality of third support portions 24 can be provided. When a plurality of third support portions 24 are provided, they can be arranged in sequence and spaced apart from each other, and arranged in sequence along the length direction of the support member 2, thereby enhancing the supporting stability of the first support portion 21 and the second support portion 22 and effectively preventing their deformation.

[0055] More preferably, a plurality of third support portions 24 are provided and are arranged in sequence and at equal intervals, so that the support force of the first support portion 21 and the second support portion 22 can be distributed more evenly and the structural stability is better.

[0056] In one embodiment, a curved portion 23 is provided between the first supporting portion 21 and the second supporting portion 22 , and a curvature radius of the curved portion 23 is r1 , wherein 0.5 mm≤r1≤5 mm.

[0057] Preferably, the cross-section of the bent portion 23 is arc-shaped, so as to achieve a smooth transition between the first support portion 21 and the second support portion 22, which not only helps to simplify the manufacturing process, but also prevents interference with the chamfer between the first wall 12 and the second wall 11, thereby improving the structural stability.

[0058] More preferably, the radius of curvature r1 of the curved portion 23 can be any value between 0.5 mm and 5 mm, for example, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2.0 mm, 2.1 mm, 2.2 mm, 2.3 mm, 2.4 mm, 2.5 mm, 2.6 mm, 2.7 mm, 2.8 mm, 2.9 mm, 3.0 mm, 3.1 mm, 3.2 mm, 3.3 mm, 3.4 mm, 3.5 mm, 3.6 mm, 3.7 mm, 3.8 mm, 3.9 mm, 4.1 mm, 4.2 mm, 4.3 mm, 4.4 mm, 4.5 mm, 4.6 mm, 4.7 mm, 4.8 mm, 4.9 mm, 5.1 mm, 5.2 mm, 5. mm, 2.7mm, 2.8mm, 2.9mm, 3.0mm, 3.1mm, 3.2mm, 3.3mm, 3.4mm, 3.5mm, 3.6mm, 3.7mm, 3.8mm, 3.9mm, 4.0mm, 4.1mm, 4.2mm, 4.3mm, 4.4mm, 4.5mm, 4.6mm, 4.7mm, 4.8mm, 4.9mm, 5.0mm, etc. Users can choose the setting according to their needs and there is no specific limitation here.

[0059] In one embodiment, the first supporting portion 21 is provided with a first through hole 211 , and the housing 1 is provided with a second through hole 121 communicating with the first through hole 211 .

[0060] Preferably, the first through hole 211 passes through the surface of the first support portion 21 . One first through hole 211 can be provided, or multiple first through holes 211 can be provided and arranged in sequence at intervals. The number of first through holes 211 can be selected and set as needed and is not specifically limited here.

[0061] More preferably, the number of the second through holes 121 is the same as the number of the first through holes 211 and they are arranged in a one-to-one correspondence.

[0062] More preferably, when the first supporting portion 21 is attached to the first wall 12 , the first through hole 211 is communicated with the second through hole 121 .

[0063] In one embodiment, the radius of the first through hole 211 is r2, wherein 2 mm ≤ r2 ≤ 15 mm. Figure 4 shown.

[0064] Preferably, the radius r2 of the first through hole 211 can be any value between 2mm and 15mm, such as 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 according to needs and no specific limitation is made here.

[0065] The above-mentioned range limitation of the first through hole 211 can, on the one hand, prevent the radius of the first through hole 211 from being too small so that the pole assembly 4 cannot pass through, and on the other hand, prevent the radius of the first through hole 211 from being too large so that the structural stability is low.

[0066] In one embodiment, the thickness of the support member 2 is h2, wherein 0.3 mm ≤ h2 ≤ 1.5 mm. Figure 4 shown.

[0067] Preferably, the thickness h2 of the support member 2 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.

[0068] By limiting the thickness h2 of the support member 2 to the above range, on the one hand, the thickness h2 of the support member 2 can be prevented from being too small to affect the supporting effect on the shell 1 and the structural strength of the shell 1; on the other hand, the thickness h2 of the support member 2 can be prevented from being too large to occupy a larger volume and increase product costs.

[0069] In one embodiment, if Figure 2 and Figure 3 As shown, the battery housing further includes a first insulating member 3 and a pole assembly 4 .

[0070] Preferably, the pole assembly 4 includes an electrical connection sheet 41 accommodated in the housing 1 , a pole 42 arranged on the electrical connection sheet 41 , a conductive block 43 arranged outside the housing 1 , and a second insulating member 44 arranged between the conductive block 43 and the housing 1 .

[0071] Specifically, the electrical connection piece 41 may be in the shape of a disk, a cuboid, or a cube. The shape of the electrical connection piece 41 may be selected and set as required, and is not specifically limited here.

[0072] Furthermore, the electrical connection sheet 41 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.

[0073] Furthermore, part of the first insulating member 3 is located between the electrical connection sheet 41 and the first support portion 21, thereby providing insulation between the electrical connection sheet 41 and the support member 2. The first insulating member 3 is provided with a third through hole 31, which is arranged opposite to and connected to the first through hole 211.

[0074] More specifically, the pole 42 is disposed on the electrical connection sheet 41. The pole 42 and the electrical connection sheet 41 can be integrally formed or welded to each other. The connection method between the pole 42 and the electrical connection sheet 41 can be selected and set as needed and is not specifically limited here.

[0075] Furthermore, the pole 42 passes through the third through hole 31 , the first through hole 211 and the second through hole 121 respectively, and one end of the pole 42 extends to the outside of the housing 1 , thereby facilitating electrical connection with an external busbar or other conductive parts.

[0076] Furthermore, the conductive block 43 is located outside the shell 1, and the end of the pole 42 extending outside the shell 1 passes through the conductive block 43 and is fixedly connected to it, such as by riveting, etc., so as to achieve a fixed connection between the pole 42 and the conductive block 43, and electrical energy can be transmitted to the conductive block 42.

[0077] More specifically, the pole 42 passes through the second insulating member 44 , and a portion of the second insulating member 44 is located between the conductive block 43 and the outer wall of the housing 1 , thereby achieving insulation between the conductive block 43 and the housing 1 .

[0078] Furthermore, the other part of the second insulating member 44 is located between the pole 42 and the inner wall of the second through hole 121 , thereby achieving insulation between the pole 42 and the housing 1 and preventing the housing 1 from being charged.

[0079] In one embodiment, a sealing ring or the like may be provided between the pole 42 and the shell 1 and / or between the electrical connection plate 41 and the first insulating member 3 or the support member 2, so as to achieve sealing of the pole assembly 4, which belongs to the prior art and will not be described in detail here.

[0080] In one embodiment, the utility model further provides a battery, and the battery includes the battery housing 100 mentioned above.

[0081] 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.

[0082] 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 includes a shell and a support member arranged inside the shell, the shell includes a first wall and a second wall, the support member includes a first support portion abutting against the first wall and a second support portion abutting against the second wall, and the support member also includes a third support portion, and the third support portion is respectively connected to the first support portion and the second support portion.

2. The battery housing according to claim 1, characterized in that: The included angle between the first supporting portion and the second supporting portion is a, wherein 80°≤a≤100°.

3. The battery housing according to claim 1, characterized in that: The third supporting portion is in the shape of a triangle.

4. The battery housing according to claim 2 or 3, characterized in that: The thickness of the third supporting portion is h1, wherein 0.3 mm≤h1≤1.5 mm.

5. The battery casing according to claim 4, characterized in that: A bending portion is provided between the first supporting portion and the second supporting portion, and a curvature radius of the bending portion is r1, wherein 0.5 mm≤r1≤5 mm.

6. The battery casing according to claim 5, characterized in that: The first supporting portion is provided with a first through hole, and the housing is provided with a second through hole communicating with the first through hole.

7. The battery casing according to claim 6, characterized in that: The radius of the first through hole is r2, wherein 2mm≤r2≤15mm.

8. The battery casing according to claim 7, characterized in that: The thickness of the support member is h2, wherein 0.3 mm ≤ h2 ≤ 1.5 mm.

9. The battery casing according to claim 8, characterized in that: The third supporting parts are provided in plurality and are arranged in sequence and at intervals.

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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