Space-saving lithium battery shell structure

Abstract

The utility model discloses a space-saving type lithium battery shell structure which comprises a lower shell body, one side of the lower shell body abuts against an upper cover plate, and lithium battery packs are fixedly arranged on the upper cover plate at equal intervals. The lower shell and the upper cover plate are separated, that is, the lithium battery packs are fixedly arranged on the upper cover plate at equal intervals, the upper cover plate can be connected to the outer side of the inner buckling plate in a sleeving mode along with combination of the lower shell and the upper cover plate, moisture can permeate between the lower shell and the upper cover plate through the arranged inner buckling plate, and the waterproof gasket is arranged, so that the waterproof performance of the lithium battery pack is improved. The upper cover plate and the lower cover plate are arranged, the waterproof effect can be achieved on threads on the outer side of the screwed cross screw, a glue injection hole is formed, a worker can conduct glue injection work on the glue injection hole in advance, waterproof work on a connected structure is further improved, the waterproof structure is concentrated on the upper cover plate, space is effectively saved, and the space utilization rate is increased; the waterproof space effect is better than that of a conventional battery case.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery cases, and particularly relates to a space-saving lithium battery case structure. Background Technique

[0002] As a key component of the battery system, the battery case plays a role in fixing and fully sealing the internal electrochemical system. The structural strength, heat dissipation and other performances of the case are important indicators for measuring the working ability of the battery. With the needs of actual applications, higher requirements are put forward for the energy density, safety and cycle life of the battery.

[0003] At present, during the actual use of lithium battery cases, there are still some problems. That is, in terms of the safety and waterproof performance of lithium battery cases, they are usually set at the deepest position of the case or distributed all over the inner wall of the case. As a result, after the actual assembly of the lithium battery is completed, there are many unoccupied areas inside the case, causing waste of space and unable to be reasonably applied. Moreover, the overall safety and waterproof performance is relatively general. Therefore, we propose a space-saving lithium battery case structure to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a space-saving lithium battery case structure to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A space-saving lithium battery case structure, including a lower case, one side of the lower case abuts against an upper cover plate. The upper cover plate is fixedly provided with lithium battery packs at equal intervals, and the lithium battery packs are wrapped inside the lower case. An inner buckle plate is sleeved inside the upper cover plate, and the inner buckle plate is fixedly installed at one end of the lower case. One end of the inner buckle plate is closely attached to a foamed rubber, and the foamed rubber is fixedly installed inside the upper cover plate. An outer opening is provided on the upper cover plate, and an inner opening is provided on the inner buckle plate. A cross screw is inserted into the outer opening and the inner opening. A screw buckle plate is engaged outside the cross screw, and the screw buckle plate is fixedly installed inside the upper cover plate. A glue injection hole is provided on one side of the screw buckle plate. A waterproof gasket is inserted into the inner opening, and the top end of the waterproof gasket is closely attached to one side of the upper cover plate.

[0006] As a further preference of this technical solution, the waterproof gasket fits inside the inner opening, the outside of the waterproof gasket is closely attached to the inner wall of the inner opening, and an arc chamfer structure is provided at the top edge of the waterproof gasket.

[0007] As a further preference of this technical solution, after the cross screw and the screw buckle plate are threaded, the top end of the cross screw is on the same horizontal plane as the outside of the upper cover plate, and the cross screw and the screw buckle plate are engaged and connected by a fine-threaded thread.

[0008] As a further preference of the present technical solution, the foamed rubber is distributed in a rectangular shape on the upper cover plate. When one end of the inner buckle plate abuts against the outside of the foamed rubber, the end of the inner buckle plate is at the central position outside the foamed rubber. The foamed rubber is fixedly connected to the inside of the upper cover plate by strong glue.

[0009] As a further preference of the present technical solution, a square hole is provided on the upper cover plate, an external connection plate is inserted into the square hole, the upper cover plate and the external connection plate are fixedly connected by fixing screws, a protection plate is fixedly installed on the external connection plate, a square pull ring is inserted into the protection plate, the square pull ring is in the sunken area of the external connection plate, a first fixing seat is fixedly installed on the outside of the square pull ring, a main magnetic block is fixedly installed at the other end of the first fixing seat, a secondary magnetic block abuts against the outside of the main magnetic block, and a second fixing seat is fixedly installed on the outside of the secondary magnetic block. The second fixing seat is fixedly installed on the external connection plate.

[0010] As a further preference of the present technical solution, a square hole is provided on the upper cover plate, an external connection plate is inserted into the square hole, the upper cover plate and the external connection plate are fixedly connected by fixing screws, a protection plate is fixedly installed on the external connection plate, a square pull ring is inserted into the protection plate, the square pull ring is in the sunken area of the external connection plate, a first fixing seat is fixedly installed on the outside of the square pull ring, a main magnetic block is fixedly installed at the other end of the first fixing seat, a secondary magnetic block abuts against the outside of the main magnetic block, and a second fixing seat is fixedly installed on the outside of the secondary magnetic block. The second fixing seat is fixedly installed on the external connection plate.

[0011] As a further preference of the present technical solution, two groups of the main magnetic blocks and the secondary magnetic blocks are provided, and the two groups of the main magnetic blocks and the secondary magnetic blocks are symmetrically distributed at one side position of the square pull ring.

[0012] The utility model provides a space-saving lithium battery case structure, which has the following beneficial effects:

[0013] In the utility model, the lower case and the upper cover plate are separated, that is, the lithium battery groups are fixedly arranged at equal intervals on the upper cover plate. As the lower case and the upper cover plate are combined, the upper cover plate can be sleeved on the outside of the inner buckle plate. By providing the inner buckle plate, water penetration between the lower case and the upper cover plate can be achieved. By providing the waterproof gasket, the waterproof effect on the outer thread of the cross screw after tightening can be achieved. Similarly, with the provided glue injection hole, personnel can perform glue injection work on the glue injection hole in advance, thereby further improving the waterproof work on the connected structure. For the waterproof structure, it is concentrated on the upper cover plate, effectively saving space and improving space utilization rate, and having a better waterproof space effect than a conventional battery case.

[0014] With this structure provided by the present utility model, during the process of personnel replacing or overhauling the lithium battery pack inside the lower housing and the upper cover plate, the personnel can buckle their hands on the outside of the square pull ring, thereby facilitating the separation of the lower housing and the upper cover plate by the personnel. Moreover, the square pull ring is located in the sunken area of the external plate, which can avoid occupying the external space. In the cooperation between the main magnetic block and the auxiliary magnetic block, the position of the square pull ring in the unused state can be restricted. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic right side view of the structure of the present utility model;

[0016] Figure 2 Rear schematic view of the structure in the separated state of the lower housing and the upper cover plate of the present utility model;

[0017] Figure 3 Top schematic view of the structure of the screw buckling plate of the present utility model;

[0018] Figure 4 Right schematic view of the structure of the waterproof gasket of the present utility model;

[0019] Figure 5 For the present utility model Figure 1 Enlarged schematic view of the structure of A in the present utility model;

[0020] Figure 6 Cross-sectional schematic view of the structure of the main magnetic block and the auxiliary magnetic block of the present utility model.

[0021] In the figure: 1. Lower housing; 2. Upper cover plate; 3. Lithium battery pack; 4. Inner buckling plate; 5. Foaming rubber; 6. Outer opening; 7. Inner opening; 8. Cross screw; 9. Screw buckling plate; 10. Glue injection hole; 11. Waterproof gasket; 12. External plate; 13. Fixing screw; 14. Protection plate; 15. Square pull ring; 16. Fixing seat one; 17. Main magnetic block; 18. Auxiliary magnetic block; 19. Fixing seat two. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model.

[0023] The present utility model provides technical solutions as follows: As Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, in this embodiment, a space-saving lithium battery case structure includes a lower case 1. One side of the lower case 1 abuts against an upper cover plate 2. Lithium battery packs 3 are fixedly arranged at equal intervals on the upper cover plate 2, and the lithium battery packs 3 are wrapped inside the lower case 1. An inner buckle plate 4 is sleeved inside the upper cover plate 2. The inner buckle plate 4 is fixedly installed at one end of the lower case 1. One end of the inner buckle plate 4 is closely attached to a foamed rubber 5. The foamed rubber 5 is fixedly installed inside the upper cover plate 2. An outer opening 6 is provided on the upper cover plate 2, and an inner opening 7 is provided on the inner buckle plate 4. A cross screw 8 is inserted into the outer opening 6 and the inner opening 7. A screw buckle plate 9 is engaged with the outside of the cross screw 8. The screw buckle plate 9 is fixedly installed inside the upper cover plate 2. A glue injection hole 10 is provided on one side of the screw buckle plate 9. A waterproof gasket 11 is inserted into the inner opening 7. The top of the waterproof gasket 11 is closely attached to one side of the upper cover plate 2. Since the lower case 1 and the upper cover plate 2 are separated, that is, the lithium battery packs 3 are fixedly arranged at equal intervals on the upper cover plate 2. As the lower case 1 and the upper cover plate 2 are combined, the upper cover plate 2 can be sleeved outside the inner buckle plate 4. By providing the inner buckle plate 4, it can play a role in water penetration between the lower case 1 and the upper cover plate 2. By providing the waterproof gasket 11, it can play a waterproof effect on the outer thread of the cross screw 8 after being tightened. Similarly, with the provided glue injection hole 10, personnel can perform glue injection work on the glue injection hole 10 in advance, thereby further improving the waterproof work on the connected structure. For this waterproof structure, it is concentrated on the upper cover plate 2, effectively saving space and improving space utilization rate, and having a better waterproof space effect than a conventional battery case. The waterproof gasket 11 fits inside the inner opening 7, and the outside of the waterproof gasket 11 is closely attached to the inner wall of the inner opening 7. An arc chamfer structure is provided at the top edge of the waterproof gasket 11. By providing the waterproof gasket 11, it can play a certain degree of waterproof effect on the cross screw 8, and by providing the arc chamfer structure, it helps the upper cover plate 2 to be smoothly sleeved outside the inner buckle plate 4. After the cross screw 8 and the screw buckle plate 9 are threaded, the top of the cross screw 8 is at the same horizontal plane as the outside of the upper cover plate 2. The cross screw 8 and the screw buckle plate 9 are connected by fine-threaded meshing. It can ensure the aesthetic degree of the outer structure of the device. At the same time, the fine-threaded thread has a self-locking property, thereby improving the stability of the position of the cross screw 8. The foamed rubber 5 is distributed in a rectangular shape on the upper cover plate 2. When one end of the inner buckle plate 4 abuts against the outside of the foamed rubber 5, the end of the inner buckle plate 4 is at the center position outside the foamed rubber 5. The foamed rubber 5 is fixedly connected to the inside of the upper cover plate 2 by strong glue, which can effectively fix the position of the foamed rubber 5.

[0024] As Figure 1 , Figure 5 and Figure 6As shown, a square hole is formed in the upper cover plate 2, and an external connection plate 12 is inserted into the square hole. The upper cover plate 2 and the external connection plate 12 are fixedly connected by fixing screws 13. A protection plate 14 is fixedly installed on the external connection plate 12, and a square pull ring 15 is inserted into the protection plate 14. The square pull ring 15 is located in the recessed area of the external connection plate 12. A first fixing seat 16 is fixedly installed on the outer side of the square pull ring 15, and a main magnetic block 17 is fixedly installed at the other end of the first fixing seat 16. A secondary magnetic block 18 abuts against the outer side of the main magnetic block 17. A second fixing seat 19 is fixedly installed on the outer side of the secondary magnetic block 18, and the second fixing seat 19 is fixedly installed on the external connection plate 12. By providing this structure, during the process of replacing or overhauling the lithium battery pack 3 inside the lower housing 1 and the upper cover plate 2 by personnel, the personnel can hold the outer side of the square pull ring 15 with their hands, thereby facilitating the separation of the lower housing 1 and the upper cover plate 2 by the personnel. Moreover, since the square pull ring 15 is located in the recessed area of the external connection plate 12, it can avoid occupying the external space. And in the cooperation between the main magnetic block 17 and the secondary magnetic block 18 provided, the position of the square pull ring 15 in the non-applicable state can be restricted. The square pull ring 15 can slide inside the protection plate 14. The outer shape of the main magnetic block 17 is spherical, and the surface of the main magnetic block 17 that abuts against the secondary magnetic block 18 is circularly recessed, so as to facilitate the close attraction between the main magnetic block 17 and the secondary magnetic block 18. Both the main magnetic block 17 and the secondary magnetic block 18 are provided in two groups, and the two groups of the main magnetic block 17 and the secondary magnetic block 18 are symmetrically distributed at one side position of the square pull ring 15, further improving the stability of the position of the square pull ring 15.

[0025] The present utility model provides a space-saving lithium battery shell structure, and the specific working principle is as follows:

[0026] During the use of the device, as the lithium battery packs 3 are fixedly arranged at equal intervals on the upper cover plate 2, the personnel can pre-apply glue to the glue injection holes 10 in advance, and insert the waterproof gaskets 11 into the inner openings 7, so that the tops of the waterproof gaskets 11 protrude outside the inner clamping plates 4. Subsequently, the lithium battery packs 3 are slowly inserted into the interior of the lower housing 1 and pushed. Subsequently, the upper cover plate 2 can be sleeved outside the inner clamping plates 4. When the upper cover plate 2 abuts against one end of the lower housing 1, the foamed rubber 5 provided inside the upper cover plate 2 can closely adhere to the end position of the inner clamping plates 4, and the outer openings 6, the inner openings 7, and the waterproof gaskets 11 are on the same central axis. Subsequently, the cross screws 8 can be inserted into the outer openings 6, the inner openings 7, and the waterproof gaskets 11 and rotated, so that the cross screws 8 can be meshed with the screw clamping plates 9. During this period, the injected glue can be located at the threads of the cross screws 8.

[0027] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A space-saving lithium battery shell structure, characterized in that: The invention comprises a lower shell (1), one side of the lower shell (1) is in contact with an upper cover plate (2), lithium battery packs (3) are fixedly arranged on the upper cover plate (2) at equal intervals, and the lithium battery packs (3) are wrapped in the lower shell (1), an inner buckle plate (4) is sleeved inside the upper cover plate (2), the inner buckle plate (4) is fixedly installed on one end of the lower shell (1), one end of the inner buckle plate (4) is tightly attached to a foam rubber (5), the foam rubber (5) is fixedly installed in the upper cover plate (2), and the upper cover plate (2) An outer opening (6) is provided on the upper cover plate (2), an inner opening (7) is provided on the inner gusset plate (4), a cross screw (8) is inserted into the inner opening (6) and the inner opening (7), a screw plate (9) is engaged with the outer side of the cross screw (8), the screw plate (9) is fixedly installed inside the upper cover plate (2), a glue injection hole (10) is provided on one side of the screw plate (9), a waterproof gasket (11) is inserted into the inner opening (7), and the top end of the waterproof gasket (11) is tightly attached to one side of the upper cover plate (2).

2. A space-saving lithium battery shell structure according to claim 1, characterized in that: The waterproof gasket (11) fits into the interior of the inner opening (7), the outer side of the waterproof gasket (11) is tightly attached to the inner wall of the inner opening (7), and the top edge of the waterproof gasket (11) is provided with an arc chamfered structure.

3. A space-saving lithium battery shell structure according to claim 1, characterized in that: After the cross screw (8) and the screw button plate (9) are threaded, the top end of the cross screw (8) and the outer side of the upper cover plate (2) are in the same horizontal plane, and the cross screw (8) and the screw button plate (9) are connected by fine-pitch thread engagement.

4. A space-saving lithium battery shell structure according to claim 1, characterized in that: The foam rubber (5) is distributed in a rectangular shape on the upper cover plate (2); when one end of the inner buckle plate (4) contacts the outer side of the foam rubber (5), the end of the inner buckle plate (4) is located at the center position of the outer side of the foam rubber (5); and the foam rubber (5) is fixedly connected to the inside of the upper cover plate (2) by using strong glue.

5. A space-saving lithium battery shell structure according to claim 1, characterized in that: The upper cover plate (2) is provided with a square hole, an external plate (12) is inserted into the square hole, the upper cover plate (2) and the external plate (12) are fixedly connected by fixing screws (13), a guard plate (14) is fixedly installed on the external plate (12), a square pull ring (15) is inserted into the guard plate (14), the square pull ring (15) is located in a recessed area of ​​the external plate (12), a fixing seat 1 (16) is fixedly installed on the outer side of the square pull ring (15), a main magnetic block (17) is fixedly installed on the other end of the fixing seat 1 (16), a secondary magnetic block (18) is abutted on the outer side of the main magnetic block (17), a fixing seat 2 (19) is fixedly installed on the outer side of the secondary magnetic block (18), and the fixing seat 2 (19) is fixedly installed on the external plate (12).

6. A space-saving lithium battery shell structure according to claim 5, characterized in that: The square pull ring (15) can slide in the guard plate (14), the main magnetic block (17) is spherical in shape, and the outer side of the main magnetic block (17) abuts against the side of the auxiliary magnetic block (18) and is in a circular concave shape.

7. A space-saving lithium battery shell structure according to claim 5, characterized in that: The main magnetic blocks (17) and the auxiliary magnetic blocks (18) are each provided in two groups, and the two groups of the main magnetic blocks (17) and the auxiliary magnetic blocks (18) are symmetrically distributed at one side of the square pull ring (15).

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