Battery shell and battery
By defining the distance d1 and d2 between the pole column and the end surface of the conductive sheet, the problem of instability and insufficient overcurrent capability of the conductive sheet and the electrode caused by the pole column bias design is solved. The integrated forming pole column and the electrode structure is adopted to achieve a stable connection between the conductive sheet and the electrode and the electrode improvement.
Patent Information
- Application Number
- CN202421687711.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-07-16
AI Technical Summary
The biasing design of the pole column in the existing battery leads to a shortening of the conductive sheet length, affecting the stability and overcurrent capability of the conductive sheet and the electrode connection.
By defining the distance d1 and d2 between the electrode column and the end surface of the conductive sheet, the conductive sheet is expanded in size, the space utilization and overcurrent capacity are improved, and the connection strength between the conductive sheet and the electrode ear is enhanced, and an integrated electrode column and conductive sheet structure is adopted.
The connection strength and overcurrent capability of the conductive sheet and the pole ear are improved, and the stability and electrical performance of the battery structure are enhanced.
Smart Images
Figure CN223285110U_ABST
Abstract
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 strengthening of environmental awareness, the new energy industry is developing rapidly, including batteries.
[0003] Existing batteries include a terminal and a conductive tab, which are connected to each other. For ease of processing, the terminal is typically positioned in the middle of the conductive tab. However, when the terminal is positioned outside the middle of the cover or housing end, the conductive tab is shortened, affecting the connection stability and current carrying capacity between the tab and the tab.
[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 of improving the stability and overcurrent capacity of the connection between the conductive sheet and the tab when the existing pole offset design is used.
[0006] In a first aspect, the present invention provides a battery case, comprising an outer shell, a pole arranged on the outer shell, and a conductive sheet connected to the pole, the conductive sheet comprising a first end face and a second end face, the distance between the pole and the first end face is d1, and the distance between the pole and the second end face is d2, wherein 0mm<d1-d2≤20mm.
[0007] When adopting the above technical solution, through the above-mentioned limitations on d1 and d2, the size of the conductive sheet can be expanded during the offset design of the pole, thereby improving space utilization and current carrying capacity, and enhancing the connection strength between the conductive sheet and the tab to ensure structural stability.
[0008] In the preferred technical solution of the above-mentioned battery shell, the pole includes a first column and a second column, wherein the distance between the pole and the first end face is the distance between the first column and the first end face, and the distance between the pole and the second end face is the distance between the second column and the second end face.
[0009] In the preferred technical solution of the above battery housing, the first column and the second column are arranged in parallel.
[0010] In a preferred technical solution of the above battery housing, the first column is a cylinder; and / or the second column is a cylinder.
[0011] In a preferred technical solution of the above battery housing, the first column and the conductive sheet are integrally formed; and / or the second column and the conductive sheet are integrally formed.
[0012] In a preferred technical solution of the above battery housing, the housing is provided with a first through hole, and the first column passes through the first through hole; and / or the housing is provided with a second through hole, and the second column passes through the second through hole.
[0013] In a preferred technical solution of the above battery case, the battery case further includes a first insulating member disposed in the outer shell, wherein the first insulating member is disposed between the conductive sheet and the outer shell.
[0014] In a preferred technical solution of the above battery housing, the battery housing further comprises a conductive block disposed outside the outer shell, and the pole is fixedly connected to the conductive block.
[0015] In a preferred technical solution of the above battery housing, the battery housing further includes a second insulating member, which is arranged between the conductive block and the outer shell.
[0016] In a second aspect, the present invention further provides a battery, comprising the battery housing described in any one of the above items and a battery cell disposed in the battery housing, wherein the tabs of the battery cell are connected to the conductive sheet. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:
[0018] Figure 1 It is a three-dimensional diagram of the battery housing of the present utility model;
[0019] Figure 2 This is an exploded view of the battery housing of the present utility model;
[0020] Figure 3 It is a three-dimensional diagram of the pole and the conductive sheet of the utility model;
[0021] Figure 4 This is a top view of the pole and the conductive sheet of the utility model;
[0022] Figure 5 It is a three-dimensional diagram of the battery housing and battery core of the present utility model;
[0023] Figure 6 yes Figure 5 A partial enlarged view of part A is shown.
[0024] List of reference numerals:
[0025] 100. Battery case; 1. Outer shell; 11. Cavity; 12. Wall; 2. Conductive sheet; 21. First end face; 22. Second end face; 3. Pole; 31. First column; 32. Second column; 4. Conductive block; 5. Second insulating member; 6. First insulating member; 7. Battery cell; 71. Tab. DETAILED DESCRIPTION
[0026] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.
[0027] It should be noted that in the description of this utility model, terms such as "inside," "outside," "upper," "lower," "top," "bottom," "left," "right," "front," and "back" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or component described must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0028] Furthermore, it should be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "connected," and "installed" should be understood in a broad sense, for example, to refer to fixed connections, detachable connections, or integral connections. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.
[0029] Specifically, see first Figures 1 to 6 , Figure 1 This is a three-dimensional diagram of the battery housing of the present invention. Figure 2 This is an exploded view of the battery housing of the present invention. Figure 3 This is a three-dimensional diagram of the pole and the conductive sheet of the utility model. Figure 4 This is a top view of the pole and the conductive sheet of the utility model. Figure 5 This is a three-dimensional diagram of the battery housing and battery core of the utility model. Figure 6 yes Figure 5 A partial enlarged view of part A is shown.
[0030] In some embodiments, as Figures 1 to 6 As shown, the battery housing of the present invention includes an outer shell 1 , a pole 3 provided on the outer shell 1 , and a conductive sheet 2 connected to the pole 3 .
[0031] Preferably, the housing 1 may be a rectangular parallelepiped or a cylinder or other geometric shape. The user may select and set the shape according to the need, and no specific limitation is made here.
[0032] More preferably, the housing 1 may be made of aluminum, steel, aluminum-plastic film or the like, and the user may select and set the material according to needs, which is not specifically limited here.
[0033] More preferably, the housing 1 includes a wall surface 12, which can be an end surface in the thickness direction of the housing 1, or an end surface in the width direction, or an end surface in the length direction. In this embodiment, the wall surface 12 is an end surface in the length direction of the housing 1, such as Figure 2 shown.
[0034] Further preferably, the pole 3 is provided on the wall 12 of the housing 1 for outputting electric energy. Furthermore, the pole 3 is insulated and sealed from the housing 1 , thereby isolating the pole 3 from the housing 1 and preventing the housing 1 from being charged.
[0035] Furthermore, the conductive sheet 2 is housed in the housing 1 . The conductive sheet 2 is in a flat plate shape and is connected to the battery cell 7 and the pole 3 respectively, so that the battery cell 7 transmits electrical energy to the pole 3 through the conductive sheet 2 .
[0036] In some embodiments, the conductive sheet 2 includes a first end surface 21 and a second end surface 22 .
[0037] Preferably, the first end face 21 and the second end face 22 are two end faces in the length direction of the conductive sheet 2, or may be two end faces in the width direction or thickness direction of the conductive sheet 2. In this embodiment, the first end face 21 and the second end face 22 are two end faces in the length direction of the conductive sheet 2. Figure 4 shown.
[0038] In some embodiments, the distance between the pole 3 and the first end face 21 is d1, and the distance between the pole 3 and the second end face 22 is d2, wherein 0 mm < d1 - d2 ≤ 20 mm.
[0039] Preferably, the pole 3 may be a cylinder or a rectangular parallelepiped, d1 is the distance between the central axis of the pole 3 and the first end face 21 , and d2 is the distance between the central axis of the pole 3 and the second end face 22 .
[0040] More preferably, if Figure 1 As shown, when the pole 3 is offset on the wall 12, by limiting the sizes of d1 and d2, the size of the conductive sheet can be increased when the pole 3 is offset, thereby enhancing the connection strength and stability between the conductive sheet and the tab, and increasing the overcurrent capacity and improving the electrical performance.
[0041] More preferably, the difference between d1 and d2 can be any value between 0mm and 20mm, for example, it can be 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, etc. The user can choose the setting according to needs, and no specific limitation is made here.
[0042] By limiting the difference between d1 and d2 to the above range, on the one hand, the conductive sheet 2 is prevented from being too large and interfering with the surrounding structure, and on the other hand, the conductive sheet 2 is prevented from being too small and affecting its current carrying capacity and connection strength with the tab.
[0043] In some embodiments, the pole 3 includes a first column 31 and a second column 32, wherein the distance between the pole 3 and the first end face 21 is the distance between the first column 31 and the first end face 21, and the distance between the pole 3 and the second end face 22 is the distance between the second column 32 and the second end face 22.
[0044] Preferably, the first column 31 is disposed close to the first end surface 21 , the second column 32 is disposed close to the second end surface 22 , and the first column 31 and the second column 32 are disposed on the same side of the conductive sheet 2 in the thickness direction.
[0045] More preferably, the distance d1 between the first column 31 and the first end surface 21 is the distance between the central axis of the first column 31 and the first end surface 21, and the distance d2 between the second column 32 and the second end surface 22 is the distance between the central axis of the second column 32 and the second end surface 22. Figure 4 shown.
[0046] More preferably, the first column 31 can be a cylinder, a cuboid or other geometric body, and the second column 32 can be a cylinder, a cuboid or other geometric body. The user can select and set them according to needs, and no specific limitation is made here.
[0047] In other embodiments, the pole 3 may also include only the first column 31 or the second column 32 , etc., so as to simplify the structure and reduce the cost and process difficulty.
[0048] In some embodiments, the first column 31 and the second column 32 are arranged in parallel.
[0049] Preferably, the first column 31 is parallel to the second column 32 , specifically, the central axis of the first column 31 is parallel to the central axis of the second column 32 .
[0050] By arranging the first column 31 and the second column 32 in parallel, the processing difficulty can be simplified, and the installation and fixation with the housing 1 can be facilitated, thereby reducing the difficulty of assembly.
[0051] In other embodiments, the first column 31 and the second column 32 may also be arranged in a non-parallel manner. The user may select the arrangement according to needs, and no specific limitation is made here.
[0052] In some embodiments, the first column 31 is a cylinder; and / or the second column 32 is a cylinder.
[0053] Preferably, the first column 31 is a cylinder, thereby simplifying the processing difficulty and facilitating installation and fixation with the housing 1 .
[0054] More preferably, the second column 32 is a cylinder, thereby further simplifying the processing difficulty and facilitating installation and fixation with the housing 1 .
[0055] In some embodiments, the first column 31 and the conductive sheet 2 are integrally formed; and / or the second column 32 and the conductive sheet 2 are integrally formed.
[0056] Preferably, the first column 31 and the conductive sheet 2 are integrally formed, thereby increasing the strength of the connection between the two, simplifying the process steps, improving production efficiency, and reducing production costs. In other embodiments, the first column 31 and the conductive sheet 2 may also be fixedly connected by welding or other methods. The user can select a setting as needed, and this is not specifically limited here.
[0057] More preferably, the second column 32 and the conductive sheet 2 are integrally formed, thereby increasing the connection strength between the two, simplifying the process steps, improving production efficiency, and reducing production costs. In other embodiments, the second column 32 and the conductive sheet 2 may also be fixedly connected by welding or other methods. The user can select a setting as needed, and this is not specifically limited here.
[0058] In some embodiments, the housing 1 is provided with a first through hole, and the first column 31 passes through the first through hole; and / or the housing 1 is provided with a second through hole, and the second column 32 passes through the second through hole.
[0059] Preferably, the first through hole passes through the inner and outer surfaces of the wall 12 of the shell 1 to achieve communication between the inner and outer spaces of the shell 1. The shape of the first through hole is adapted to the shape of the first column 31. In this embodiment, the first column 31 is a cylinder, and the first through hole is circular.
[0060] The first column 31 passes through the first through hole so that one end of the first column 31 is inside the housing 1 and the other end is outside the housing 1 , thereby achieving power output.
[0061] More preferably, the second through hole passes through the inner and outer surfaces of the wall 12 of the shell 1 to achieve communication between the inner and outer spaces of the shell 1. The shape of the second through hole is adapted to the shape of the second column 32. In this embodiment, the second column 32 is a cylinder, and the second through hole is circular.
[0062] The second column 32 passes through the second through hole so that one end of the second column 32 is inside the housing 1 and the other end is outside the housing 1, thereby achieving power output.
[0063] In some embodiments, the battery housing further includes a first insulating member 6 disposed within the outer shell 1 , and the first insulating member 6 is disposed between the conductive sheet 2 and the outer shell 1 .
[0064] Preferably, the first insulating member 6 is accommodated in the housing 1 , and the first insulating member 6 is made of insulating materials such as plastic, so as to play an insulating role.
[0065] More preferably, the first insulating member 6 is clamped between the inner surface of the housing 1 and the conductive sheet 2 , thereby achieving insulation between the two, preventing the conductive sheet 2 from making electrical contact with the housing 1 , and ensuring the safety of the structure.
[0066] More preferably, the first insulating member 6 covers the conductive sheet 2 , thereby significantly enhancing the insulating protection of the conductive sheet 2 .
[0067] In some embodiments, the battery housing further includes a conductive block 4 disposed outside the outer shell 1 , and the pole 3 is fixedly connected to the conductive block 4 .
[0068] Preferably, the conductive block 4 is arranged outside the housing 1 and faces the wall 12 , thereby facing the pole 3 .
[0069] More preferably, the conductive block 4 is fixedly connected to the pole 3, for example, the pole 3 passes through the conductive block 4 and is riveted thereto, thereby achieving a fixed connection between the two. In other embodiments, the two may also be fixedly connected by other means such as welding, which is not specifically limited here.
[0070] More preferably, the conductive block 4 can be made of copper or aluminum, etc., which is not specifically limited here. Further, the conductive block 4 can be a geometric body such as a cylinder or a cuboid.
[0071] In some embodiments, the battery housing further includes a second insulating member 5 , which is disposed between the conductive block 4 and the outer shell 1 .
[0072] Preferably, the second insulating member 5 is located outside the housing 1 and faces the wall 12 . The second insulating member 5 is made of insulating materials such as plastic, thereby providing insulation.
[0073] More preferably, the second insulating member 5 is clamped between the conductive block 4 and the wall surface 12 of the housing 1 , thereby achieving insulation between the two, preventing the conductive block 4 from making electrical contact with the housing 1 , and ensuring the safety of the structure.
[0074] More preferably, the second insulating member 5 covers the conductive block 4 , thereby significantly enhancing the insulating protection of the conductive block 4 .
[0075] In some embodiments, the present invention further provides a battery, comprising the battery housing described in any one of the above items and a battery cell 7 disposed in the battery housing, wherein the tab 71 of the battery cell 7 is connected to the conductive sheet 2 .
[0076] Preferably, if Figure 6 As shown, the battery core 7 is accommodated in the housing 1 , and the battery core 7 includes a tab 71 , which is electrically connected to the conductive sheet 2 , so that electrical energy can be transmitted to the conductive sheet 2 .
[0077] More preferably, the tab 71 and the conductive sheet 2 can be fixedly connected by ultrasonic welding or other methods. The user can select and set it according to needs, and no specific limitation is made here.
[0078] Those skilled in the art will appreciate that although some embodiments described herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are intended to be within the scope of this application and to form different embodiments. For example, in the claims of this application, any of the claimed embodiments may be used in any combination.
[0079] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.
Claims
1. A battery housing, characterized in that: It includes a shell, a pole arranged on the shell, and a conductive sheet connected to the pole, the conductive sheet includes a first end face and a second end face, the distance between the pole and the first end face is d1, and the distance between the pole and the second end face is d2, wherein 0mm<d1-d2≤20mm.
2. The battery case according to claim 1, wherein: The pole includes a first column and a second column, wherein the distance between the pole and the first end face is the distance between the first column and the first end face, and the distance between the pole and the second end face is the distance between the second column and the second end face.
3. The battery case according to claim 2, characterized in that The first column and the second column are arranged in parallel.
4. The battery case according to claim 3, characterized in that The first column is a cylinder; and / or the second column is a cylinder.
5. The battery case according to claim 4, characterized in that The first column and the conductive sheet are integrally formed; and / or the second column and the conductive sheet are integrally formed.
6. The battery case according to claim 5, characterized in that The housing is provided with a first through hole, and the first column passes through the first through hole; and / or the housing is provided with a second through hole, and the second column passes through the second through hole.
7. The battery case according to claim 1, characterized in that The battery case further includes a first insulating member disposed in the outer shell, wherein the first insulating member is disposed between the conductive sheet and the outer shell.
8. The battery case according to claim 7, characterized in that The battery housing further includes a conductive block disposed outside the outer shell, and the pole is fixedly connected to the conductive block.
9. The battery case according to claim 8, characterized in that The battery housing further includes a second insulating member disposed between the conductive block and the outer shell.
10. A battery, characterized in that: The invention comprises a battery casing according to any one of claims 1 to 9 and a battery cell arranged in the battery casing, wherein the tabs of the battery cell are connected to the conductive sheet.