Aluminum shell body of battery core

Abstract

The utility model discloses an aluminum shell body for a battery cell in the technical field of battery cell shells, comprising a shell and a bottom plate, wherein four corners of the bottom surface of the shell are provided with insertion rods, and the four insertion rods are inserted on the bottom plate, and a locking mechanism is provided on the bottom plate, wherein the locking mechanism corresponds to the four insertion rods and is used to fix the inserted insertion rods on the bottom plate; the locking mechanism comprises a threaded rod and a turntable, wherein the threaded rod is threadedly connected to the side surface of the bottom plate, the turntable is fixedly mounted on the end of the threaded rod located on the outer side of the bottom plate, and is used to drive the threaded rod to rotate, and the threaded rod fixes the inserted insertion rod on the bottom plate. The locking mechanism in the utility model can not only conveniently fix the inserted insertion rod on the bottom plate, but also conveniently release the insertion rod, and will not be affected for a long time, thereby facilitating the disassembly and assembly of the shell and the bottom plate.

Description

Technical Field

[0001] The utility model relates to the technical field of battery core shells, in particular to an aluminum shell for a battery core. Background Art

[0002] With the continuous development, promotion and improvement of new energy vehicles, the selection of lithium battery shells has also become an important consideration for electric vehicle manufacturers.

[0003] The existing Chinese patent with publication number CN201720633223.0 discloses an aluminum shell body of a battery cell, which "includes a shell and a bottom plate fixed to the bottom, the shell is an aluminum square tube, a number of heat dissipation fins are fixed to the outer sides of the four sides of the shell, a corresponding inner sleeve is placed on the inner side of the shell, rubber strips are sandwiched between the adjacent surfaces of the inner sleeve and the shell, pin holes are opened on the lower bottom surfaces of the four sides of the shell, pin shafts are fixed at the corresponding positions of the bottom plate, the shell and the bottom plate are connected by welding, and the inner sleeve is made of rubber material". The technical scheme realizes that "the inner sleeve and the shell are fixed by a rubber strip, and when the internal battery cell heats up and expands, the arrangement of the inner sleeve and the rubber strip can provide a telescopic space for the expansion, thereby avoiding the shell from being squeezed, deformed or even ruptured during expansion, thereby enhancing the safety of use. Heat dissipation fins are fixed to the outer sides of the four sides of the shell, which can enhance the heat dissipation effect of the entire battery cell shell and avoid overheating of the battery cell".

[0004] However, the shell and the base plate in the above technical solution are connected by means of a pin and a pin hole. Although the structure is simple, it is not convenient to disassemble. Especially after long-term use, the connection between the pin and the pin hole will be very firm, making it difficult to pull the pin out of the pin hole, which affects the disassembly and assembly of the shell and the base plate. Utility Model Content

[0005] The utility model aims to provide an aluminum outer shell for a battery cell, so as to solve the problem that the existing shell and the bottom plate are connected by a pin shaft and a pin hole, although the structure is simple, it is inconvenient to disassemble, especially after long-term use, the connection between the pin shaft and the pin hole will be very firm, making it difficult to withdraw the pin shaft from the pin hole, thus affecting the disassembly and assembly of the shell and the bottom plate.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A battery core aluminum shell, comprising a shell and a bottom plate, wherein four corners of the bottom surface of the shell are provided with plug rods, and four of the plug rods are inserted on the bottom plate, and a locking mechanism is provided on the bottom plate, wherein the locking mechanism corresponds to the four plug rods and is used to fix the plug rods inserted in place on the bottom plate;

[0008] The locking mechanism includes a threaded rod and a turntable. The threaded rod is threadedly connected to the side of the base plate. The turntable is fixedly installed at the end of the threaded rod located outside the base plate and is used to drive the threaded rod to rotate. The threaded rod fixes the inserted rod on the base plate.

[0009] As a further solution of the utility model: the four insertion rods are inserted into slots, the slots are opened on the outer wall of the base plate close to the insertion rods, and correspond to and match the insertion rods. A threaded hole threadedly connected to the threaded rod is opened on the side of the base plate, the threaded rod moves spirally along the length direction of the threaded hole, and the free end extends into the slot.

[0010] As a further solution of the utility model: locking holes are opened on the four insertion rods. After the insertion rods are fully inserted into the slots, the locking holes correspond to the free ends of the threaded rods, the locking holes match the threads of the free ends of the threaded rods, and the threaded rods are screwed into the locking holes to fix the inserted rods on the base plate.

[0011] As a further solution of the utility model: a protrusion is provided on the side of the insertion rod, and a groove corresponding to and matching the protrusion is opened in the slot. When the insertion rod is inserted into the slot, the protrusion is inserted into the groove to maintain the stability of the insertion rod during the insertion into the slot.

[0012] As a further solution of the utility model: a spring is arranged in the slot, and the spring facilitates the insertion rod to slide out of the slot.

[0013] As a further solution of the utility model: a number of limit rods are evenly arranged between two adjacent slots, and the limit rods are cylindrical or cubic structures. The bottom surface of the shell is provided with limit grooves corresponding to and matching the positions of the number of limit rods. During the process of inserting the insertion rod into the slot, the limit rod is inserted into the limit groove to maintain the stability of the connection between the shell and the base plate.

[0014] As a further solution of the utility model: handles are fixedly provided on the side surfaces opposite to the bottom plate, and the handles are used to move the bottom plate.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The locking mechanism of the utility model can not only conveniently fix the inserted rod on the bottom plate, but also conveniently release the inserted rod without being affected for a long time, thus facilitating the disassembly and assembly of the shell and the bottom plate.

[0017] In the utility model, when the insertion rod is completely inserted into the slot, the locking hole just corresponds to the position of the free end of the threaded rod. When the threaded rod is spirally entered into the slot, it can be threaded into the locking hole to lock the position of the insertion rod, so as to conveniently and quickly realize the connection between the shell and the bottom plate. At the same time, when the threaded rod rotates in the opposite direction, it can be easily rotated out of the locking hole to release the lock of the insertion rod, so that the shell and the bottom plate can be easily separated, which is convenient for the disassembly and assembly of the shell and the bottom plate.

[0018] In the utility model, when the insertion rod is inserted into the slot, the insertion rod compresses the spring, and the spring can prevent the insertion rod from loosening in the slot. When the locking mechanism releases the lock on the insertion rod, the spring can easily pop out the insertion rod from the slot, thereby realizing the rapid separation of the shell and the bottom plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0021] Figure 3 This is a schematic diagram of the structure of the bottom plate of the utility model;

[0022] Figure 4 for Figure 3 The enlarged view of point B in the middle;

[0023] Figure 5 It is a bottom view of the housing in the utility model;

[0024] Figure 6 for Figure 5 Enlarged view of point C in the middle.

[0025] In the figure: 1. shell; 11. limit groove; 2. bottom plate; 21. slot; 22. groove; 23. threaded hole; 24. spring; 3. plug rod; 31. bump; 32. locking hole; 4. locking mechanism; 41. threaded rod; 42. turntable; 5. limit rod; 6. handle. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0027] A battery core aluminum shell body, such as Figure 1-Figure 6As shown, it includes a shell 1 and a base plate 2, and rods 3 are provided at the four corners of the bottom surface of the shell 1. Four rods 3 are inserted on the base plate 2, and the four rods 3 are inserted into slots 21. The slots 21 are opened on the outer wall of the base plate 2 close to the rods 3, and correspond to and match the rods 3; in this way, the four rods 3 are inserted into the slots 21, which can prevent the shell 1 from rotating and realize the connection between the shell 1 and the base plate 2; there are also four slots 21, which correspond to and match the rods 3.

[0028] like Figure 1-Figure 6 As shown, in this embodiment: a protrusion 31 is provided on the side of the insertion rod 3, and a groove 22 corresponding to and matching the protrusion 31 is opened in the slot 21. During the process of inserting the insertion rod 3 into the slot 21, the protrusion 31 is inserted into the groove 22 to maintain the stability of the insertion rod 3 during the insertion into the slot 21; in this way, due to the presence of the protrusion 31, the protrusion 31 can slide along the groove 22, which is conducive to maintaining the stability of the insertion rod 3 during the insertion into the slot 21.

[0029] like Figure 1-Figure 6 As shown, in the present embodiment: a locking mechanism 4 is provided on the base plate 2, the locking mechanism 4 corresponds to the four insertion rods 3, and is used to fix the inserted rods 3 on the base plate 2; with such a configuration, the locking mechanism 4 can not only conveniently fix the inserted rods 3 on the base plate 2, but also conveniently release the insertion rods 3, and will not be affected for a long time, thereby facilitating the disassembly and assembly of the shell 1 and the base plate 2.

[0030] like Figure 1-Figure 6 As shown, in this embodiment: the locking mechanism 4 includes a threaded rod 41 and a turntable 42, the threaded rod 41 is threadedly connected to the side of the base plate 2, and a threaded hole 23 threadedly connected to the threaded rod 41 is provided on the side of the base plate 2, and the threaded rod 41 moves spirally along the length direction of the threaded hole 23, and the free end extends into the slot 21; in this way, the threaded rod 41 is threadedly connected to the threaded hole 23, so that the threaded rod 41 can spirally rotate along the threaded hole 23 and reciprocate along the length direction of the threaded hole 23, and the threaded rod 41 can extend into the slot 21 to lock the position of the insertion rod 3, and the threaded connection setting enhances the locking effect of the threaded rod 41.

[0031] like Figure 1-Figure 6 As shown, in this embodiment: the turntable 42 is fixedly mounted on the end of the threaded rod 41 located on the outside of the base plate 2, and is used to drive the threaded rod 41 to rotate, and the threaded rod 41 fixes the inserted rod 3 on the base plate 2; in this way, the turntable 42 can drive the threaded rod 41 to rotate, so that the threaded rod 41 moves back and forth along the threaded hole 23, thereby locking and releasing the position of the insertion rod 3.

[0032] like Figure 1-Figure 6As shown, in the present embodiment: locking holes 32 are opened on the four insertion rods 3. After the insertion rod 3 is fully inserted into the slot 21, the locking holes 32 correspond to the free ends of the threaded rods 41, and the locking holes 32 match the threads of the free ends of the threaded rods 41. The threaded rods 41 are screwed into the locking holes 32 to fix the inserted insertion rods 3 on the base plate 2. With such arrangement, when the insertion rod 3 is completely inserted into the slot 21, the locking holes 32 just correspond to the positions of the free ends of the threaded rods 41. When the threaded rods 41 are screwed into the slot 21, they can be screwed into the locking holes 32 to lock the positions of the insertion rods 3, so as to conveniently and quickly realize the connection between the shell 1 and the base plate 2. At the same time, when the threaded rods 41 rotate in the opposite direction, they can be easily rotated out of the locking holes 32 to release the lock on the insertion rods 3, so that the shell 1 and the base plate 2 can be easily separated, which is convenient for the disassembly and assembly of the shell 1 and the base plate 2.

[0033] like Figure 1-Figure 6 As shown, in the present embodiment: a spring 24 is provided in the slot 21, and the spring 24 facilitates the insertion rod 3 to slide out of the slot 21. The depth of the slot 21 is greater than the height of the insertion rod 3, leaving a certain space for the spring 24. With such a configuration, when the insertion rod 3 completes the process of being inserted into the slot 21, the insertion rod 3 compresses the spring 24, and the spring 24 can prevent the insertion rod 3 from loosening in the slot 21. When the locking mechanism 4 releases the lock on the insertion rod 3, the spring 24 can easily pop the insertion rod 3 out of the slot 21, thereby realizing the rapid separation of the shell 1 and the base plate 2.

[0034] like Figure 1-Figure 6 As shown, in this embodiment: a number of limit rods 5 are evenly arranged between two adjacent slots 21, the limit rods 5 are cylindrical or cubic structures, and the bottom surface of the shell 1 is provided with limit grooves 11 corresponding to and matching the positions of the number of limit rods 5. During the process of inserting the insertion rod 3 into the slot 21, the limit rod 5 is inserted into the limit groove 11 to maintain the stability of the connection between the shell 1 and the base plate 2.

[0035] like Figure 1-Figure 6 As shown, in this embodiment: handles 6 are fixedly provided on the opposite sides of the bottom plate 2, and the handles 6 are used to move the bottom plate 2; with such a configuration, the handles 6 can facilitate the movement of the bottom plate 2, thereby realizing the disassembly and assembly of the shell 1 and the bottom plate 2.

[0036] The connection process between the housing 1 and the base plate 2 is as follows:

[0037] First, move the base plate 2 by means of the handle 6, align the slot 21 on the base plate 2 with the bottom end of the insertion rod 3, and then insert the insertion rod 3 into the slot 21. During this process, ensure that the protrusion 31 is inserted into the groove 22, the limit rod 5 is inserted into the limit groove 11, and the spring 24 is compressed. When the insertion rod 3 is fully inserted into the slot 21, the protrusion 31 is fully inserted into the groove 22, the limit rod 5 is fully inserted into the limit groove 11, and the compression amount of the spring 24 is maximum. At this time, the locking hole 32 corresponds to the free end of the threaded rod 41. Then, the threaded rod 41 is driven to rotate by the turntable 42, and the threaded rod 41 is spirally pushed along the threaded hole 23. The free end of the threaded rod 41 spirals into the locking hole 32 to fix the position of the insertion rod 3, and the insertion rod 3 is fixed to the slot 21, thereby realizing a fixed connection between the shell 1 and the base plate 2.

[0038] The disassembly process of the housing 1 and the base plate 2 is as follows:

[0039] The threaded rod 41 is driven to rotate in the reverse direction by the turntable 42, and the free end of the threaded rod 41 spirals out of the locking hole 32. When the threaded rod 41 is completely out of the locking hole 32, the spring 24 squeezes the insertion rod 3, and the insertion rod 3 quickly disengages from the slot 21, so that the shell 1 and the base plate 2 are quickly separated.

[0040] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A battery core aluminum shell, comprising a shell (1) and a bottom plate (2), characterized in that: Insertion rods (3) are provided at four corners of the bottom surface of the shell (1), and the four insertion rods (3) are inserted on the bottom plate (2). A locking mechanism (4) is provided on the bottom plate (2), and the locking mechanism (4) corresponds to the four insertion rods (3) and is used to fix the inserted insertion rods (3) on the bottom plate (2); The locking mechanism (4) comprises a threaded rod (41) and a rotating disk (42); the threaded rod (41) is threadedly connected to the side surface of the base plate (2); the rotating disk (42) is fixedly mounted on the end of the threaded rod (41) located outside the base plate (2) and is used to drive the threaded rod (41) to rotate; the threaded rod (41) fixes the inserted rod (3) on the base plate (2).

2. The battery core aluminum shell according to claim 1, characterized in that: The four insertion rods (3) are inserted into the slots (21). The slots (21) are formed on the outer wall of the bottom plate (2) near the insertion rods (3) and correspond to and match the insertion rods (3). The bottom plate (2) has a threaded hole (23) threadedly connected to the threaded rod (41) on its side. The threaded rod (41) moves spirally along the length direction of the threaded hole (23), and its free end extends into the slots (21).

3. The battery core aluminum shell according to claim 2, characterized in that: The four insertion rods (3) are provided with locking holes (32). After the insertion rods (3) are fully inserted into the slots (21), the locking holes (32) correspond to the free ends of the threaded rods (41). The locking holes (32) match the threads of the free ends of the threaded rods (41). The threaded rods (41) are screwed into the locking holes (32) to fix the inserted insertion rods (3) on the base plate (2).

4. The battery core aluminum shell according to claim 3, characterized in that: A protrusion (31) is provided on the side of the insertion rod (3), and a groove (22) corresponding to and matching the protrusion (31) is provided in the slot (21). When the insertion rod (3) is inserted into the slot (21), the protrusion (31) is inserted into the groove (22) to maintain the stability of the insertion rod (3) during the insertion into the slot (21).

5. The battery core aluminum shell according to claim 4, characterized in that: A spring (24) is provided in the slot (21), and the spring (24) facilitates the insertion rod (3) to slide out of the slot (21).

6. The battery core aluminum shell according to claim 5, characterized in that: A plurality of limiting rods (5) are evenly arranged between two adjacent slots (21); the limiting rods (5) are cylindrical or cubic structures; the bottom surface of the shell (1) is provided with limiting grooves (11) corresponding to and matching the positions of the plurality of limiting rods (5); when the insertion rod (3) is inserted into the slot (21), the limiting rods (5) are inserted into the limiting grooves (11) to maintain the stability of the connection between the shell (1) and the bottom plate (2).

7. The battery core aluminum shell according to claim 6, characterized in that: A handle (6) is fixedly provided on the opposite side of the bottom plate (2), and the handle (6) is used to move the bottom plate (2).

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