A connecting piece and a lithium ion battery pack

Abstract

The application relates to the technical field of lithium ion batteries, in particular to a connecting piece and a lithium ion battery pack, which comprises a rotating plate, a supporting plate and an enclosing plate, the rotating plate is connected with a connecting rod, and the supporting plate is connected with a movable plate; beneficial effects are that: firstly, a battery block is placed on a pressing plate and extruded against an elastic spring, the pressing plate is shrunk into a placing groove through rotation of the movable plate, at this time, the battery block is fixed through insulating anti-skid strips on two sides of the movable plate, then the supporting plate is installed on the connecting rod through sliding connection of a limiting slide plate and a limiting slide groove, finally, opposite forces are applied to two push plates, the rectangular spring is extruded through a fixing block, and a mounting plate is inserted into the limiting slide groove, when the fixing block and a fixing hole are aligned, the forces applied to the push plates are removed, and the fixing block is inserted into the fixing hole, so that quick installation and disassembly of the lithium battery assembly are realized, maintenance efficiency is improved, and waste is avoided.

Description

Technical Field

[0001] This invention relates to the field of lithium-ion battery technology, specifically to a connector and a lithium-ion battery pack. Background Technology

[0002] Lithium-ion batteries use lithium metal or lithium alloy as the anode material and a non-aqueous electrolyte solution. Common lithium-ion batteries are mostly cylindrical structures composed of a core and a steel casing. The voltage of a single lithium-ion cylindrical battery is typically between 3.6 and 4.2V to meet practical application requirements.

[0003] In existing technologies, multiple lithium-ion batteries are usually arranged into battery packs. Lithium-ion battery modules connected in series can increase the voltage during operation, thereby expanding the applicability of lithium batteries.

[0004] However, when a lithium battery cell is damaged and needs to be replaced or repaired, laser welding usually requires destructive disassembly. In addition, secondary welding is required after repair. If disassembly is not performed, the damaged module and the intact module in the module must be replaced together, which results in serious waste. Furthermore, the disassembly and installation process is cumbersome and inefficient. Summary of the Invention

[0005] The purpose of this invention is to provide a connector and a lithium-ion battery pack to solve the problems mentioned in the background art. When a lithium battery cell is damaged and needs to be replaced or repaired, laser welding is usually used, which requires destructive disassembly. In addition, secondary welding is required after repair. If disassembly is not performed, the damaged module and the intact module in the module must be replaced together, which results in serious waste. Furthermore, the disassembly and installation process is cumbersome and inefficient.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a connector, the connector comprising:

[0007] The rotating plate has connecting rods fixedly connected to the four corners of one side wall. Each pair of connecting rods has a limit groove on the opposite side wall. Each pair of connecting rods has a positioning plate fixedly connected to the side wall away from the rotating plate. Fixing holes are provided between the opposite side walls of the two positioning plates.

[0008] The support plate comprises several plates, each located on one side of the rotating plate. Each support plate has movable plates at both ends inside. A telescopic spring and a pressure plate are provided between two movable plates. Each support plate has fixed rods and limiting slide plates at both ends near the connecting rod. A stop cylinder is provided on the inner side of each pair of fixed rods.

[0009] The sealing plate is connected with the connecting rod, and symmetrically two ends of the sealing plate are provided with mounting plates, and the two ends of the sealing plate are internally provided with fixing blocks, push plates and rectangular springs.

[0010] Preferably, two support legs are fixedly connected to one side wall of the rotating plate, and the side wall of the rotating plate connected with the connecting rod is provided with a plurality of uniformly distributed insulating rubber strips, and the insulating rubber strips are located inside the two pairs of connecting rods.

[0011] Preferably, the support plate is in the shape of "L", a through hole is formed in the middle of one side wall of the support plate, a placing groove is formed in the middle of one side wall of the through hole, and a fixing plate is arranged on the side wall of the support plate opposite to the placing groove.

[0012] Preferably, the movable plate is in the shape of "L", a plurality of insulating anti-skid strips are fixedly connected to the inner side wall of one end of the movable plate, a rotating rod is arranged at a corner of one end of the movable plate, and the rotating rod is rotatably connected to the inner walls of the opposite sides of the through hole.

[0013] Preferably, one end of the telescopic spring is fixedly connected to the fixing plate through the through hole, the other end of the telescopic spring is fixedly connected to the middle of one side wall of the pressing plate, the side wall of the pressing plate connected with the telescopic spring is provided with hinge seats at both ends, the hinge seats are rotatably connected to one end of the movable plate away from the rotating rod, and the other side wall of the pressing plate is provided with an insulating pad.

[0014] Preferably, a plurality of the blocking cylinders are uniformly fixedly connected to the opposite side walls of each pair of fixing rods, the blocking cylinders are in the shape of hexagonal prism, a plurality of uniformly distributed heat dissipation holes are formed in each side wall of the blocking cylinder, and the opposite side walls of each pair of fixing rods are fixedly connected with limiting sliding plates, and the limiting sliding plates are in the shape of "U".

[0015] Preferably, the two mounting plates are in the shape of "T", the two mounting plates are fixedly connected to the side walls of the symmetric two ends of the sealing plate, a handle is arranged on one side wall of the sealing plate, and two support legs are arranged at one end of the sealing plate.

[0016] Preferably, the two ends of the sealing plate connected with the two mounting plates are internally provided with movable grooves, a movable hole is formed between the inner wall of one end of the movable groove and the outer wall of the mounting plate, the size of the movable groove is greater than that of the movable hole, and a moving slot is formed between the side wall of the movable groove and the sealing plate.

[0017] Preferably, the push plate is in the shape of "U", one end of the push plate is fixedly connected to the side wall of the fixing block located inside the movable groove through the moving slot, the other end of the fixing block is connected to the fixing hole through the movable hole, one end of the fixing block away from the movable hole is fixedly connected to one end of the rectangular spring, and the other end of the rectangular spring is fixedly connected to the inner wall of the movable groove away from the mounting plate.

[0018] A lithium-ion battery pack includes the aforementioned connector.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] When connecting lithium battery components, the battery block is first placed on the pressure plate. The weight of the battery block compresses the telescopic spring, causing it to retract into the through hole. Simultaneously, the hinge and rotating rod cause the movable plate to rotate, ultimately retracting the pressure plate into the placement slot. At this point, the battery block is fixed on both sides by the insulating anti-slip strips on both sides of the movable plate. Then, the limiting slide plate slides into the limiting groove inside the connecting rod, allowing the support plate to be installed on the connecting rod. In addition, the heat of the battery block is dissipated through the protrusions on the baffle (not marked in the figure) and the heat dissipation holes. Finally, relative forces are applied to the two push plates, and the rectangular spring is compressed by the fixing blocks, making the distance between the two opposing ends of the two fixing blocks smaller than the distance between the inner sides of the two positioning plates. The mounting plate is then inserted into the limiting groove. When the sealing plate is pressed to the bottom, the fixing block is aligned with the fixing hole. At this point, the force applied to the push plates is removed, and the rectangular spring resets the fixing block and inserts it into the fixing hole. This facilitates the quick installation and removal of lithium battery components, improves maintenance efficiency, and avoids waste. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall connection structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the connecting frame structure of the present invention;

[0023] Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A;

[0024] Figure 4 This is a partial sectional view of the connecting frame of the present invention;

[0025] Figure 5 This is a schematic diagram of the mounting plate structure of the present invention;

[0026] Figure 6 This is a partial cross-sectional view of the sealing plate of the present invention;

[0027] Figure 7 For the present invention Figure 6 Enlarged schematic diagram of the structure at point B.

[0028] In the figure: 1, support leg one; 2, connecting rod; 3, rotating plate; 4, insulating rubber strip; 5, handle; 6, support leg two; 7, limiting sliding groove; 8, support plate; 9, limiting sliding plate; 10, fixed rod; 11, blocking cylinder; 12, heat dissipation hole; 13, insulating non-slip strip; 14, extension spring; 15, pressing plate; 16, through hole; 17, movable plate; 18, insulating pad; 19, hinge base; 20, placing groove; 21, fixed plate; 22, rotating rod; 23, fixed hole; 24, positioning plate; 25, sealing plate; 26, mounting plate; 27, fixed block; 28, push plate; 29, rectangular spring; 30, movable groove; 31, moving slot hole; 32, movable hole. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme of the present application clear, complete and the advantages more clear and obvious, the embodiments of the present application are further described in detail below with reference to the drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present application, not all embodiments, and are only used to explain the embodiments of the present application, and do not limit the embodiments of the present application. All other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0030] In the description of the present application, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the present application. In addition, the terms "a", "first", "second", "third", "fourth", "fifth", "sixth" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] For the purposes of simplicity and illustration, the principles of the embodiments are primarily described by way of reference example. In the following description, numerous specific details are set forth to provide a thorough understanding of the embodiments. It will be apparent, however, to one ordinarily skilled in the art that the embodiments can be practiced without the specific details and that numerous implementation choices may

[0033] Referring now to the drawings Figures 1 to 7 The present application provides a technical solution: a connecting piece, the connecting piece comprising:

[0034] The rotating plate 3 is fixedly connected with the connecting rods 2 at the four corners of one end of the side wall, a limiting sliding groove 7 is formed in the opposite side walls of each pair of connecting rods 2, a positioning plate 24 is fixedly connected with the connecting rods 2 at the end of the side wall away from the rotating plate 3, a fixing hole 23 is formed between the opposite side walls of the two positioning plates 24, two support legs one 1 are fixedly connected with the rotating plate 3 at one end of the side wall, and a plurality of evenly distributed insulating rubber strips 4 are arranged on the side wall of the rotating plate 3 and the connecting rods 2, and the insulating rubber strips 4 are located inside the two pairs of connecting rods 2.

[0035] The support plate 8 is provided with a plurality of support plates 8 located on one side of the rotating plate 3, the inside of each support plate 8 is provided with two movable plates 17 at both ends, a telescopic spring 14 and a pressing plate 15 are arranged between the two movable plates 17, the side of each support plate 8 close to the connecting rod 2 is provided with a fixed rod 10 and a limiting sliding plate 9 at both ends, a blocking cylinder 11 is arranged inside each pair of fixed rods 10, the support plate 8 is in the shape of “L”, a through hole 16 is formed in the middle of one end of the side wall of the support plate 8, a placing groove 20 is formed in the middle of one end of the side wall of the through hole 16, a fixed plate 21 is arranged on the side wall of the support plate 8 opposite to the placing groove 20, the movable plate 17 is in the shape of “L”, a plurality of insulating anti-skid strips 13 are fixedly connected with the inside of one end of the movable plate 17, a rotating rod 22 is arranged at the corner of one end of the movable plate 17, the two ends of the rotating rod 22 are rotatably connected with the inside of the opposite two sides of the through hole 16, a plurality of blocking cylinders 11 are evenly fixedly connected with the opposite side walls of each pair of fixed rods 10, the blocking cylinder 11 is in the shape of hexagonal prism, a plurality of evenly distributed heat dissipation holes 12 are formed in each side wall of the blocking cylinder 11, and the opposite side walls of each pair of fixed rods 10 are fixedly connected with the limiting sliding plate 9, respectively.

[0036] The sealing plate 25 is connected with the connecting rod 2, and the symmetric two ends of the sealing plate 25 are provided with mounting plates 26. The two ends of the sealing plate 25 are internally provided with fixing blocks 27, push plates 28 and rectangular springs 29. One end of the telescopic spring 14 penetrates through the through hole 16 and is fixedly connected with the fixed plate 21. The other end of the telescopic spring 14 is fixedly connected with the middle of the side wall of one end of the pressing plate 15. The side wall of the other end of the pressing plate 15 connected with the telescopic spring 14 is provided with hinge seats 19. The hinge seats 19 are rotationally connected with the end of the movable plate 17 away from the rotating rod 22. The side wall of the other end of the pressing plate 15 is provided with an insulating pad 18. The two mounting plates 26 are both in the shape of “T”. The two mounting plates 26 are fixedly connected with the side walls of the symmetric two ends of the sealing plate 25. The side wall of one end of the sealing plate 25 is provided with a handle 5. One end of the sealing plate 25 is provided with two supporting legs 6. The two ends of the sealing plate 25 connected with the two mounting plates 26 are internally provided with movable grooves 30. The movable grooves 30 are internally provided with movable holes 32 between the inner walls of one end and the outer walls of the mounting plates 26. The size of the movable grooves 30 is larger than that of the movable holes 32. The movable grooves 30 are provided with moving slot holes 31 between the side walls of the sealing plate 25. The push plate 28 is in the shape of “convex”. One end of the push plate 28 penetrates through the moving slot hole 31 and is fixedly connected with the side wall of one end of the fixing block 27 inside the movable groove 30. The other end of the fixing block 27 penetrates through the movable hole 32 and is connected with the fixed hole 23. The end of the fixing block 27 away from the movable hole 32 is fixedly connected with one end of the rectangular spring 29. The other end of the rectangular spring 29 is fixedly connected with the inner wall of the movable groove 30 away from the mounting plate 26.

[0037] A lithium ion battery pack comprising the connecting piece.

[0038] In actual use, when the lithium battery assembly is connected, first, the battery block is placed on the pressing plate 15. The telescopic spring 14 is squeezed into the through hole 16 by the weight of the battery block, at the same time, the movable plate 17 is rotated by the hinge seat 19 and the rotating rod 22, and finally the pressing plate 15 is shrunk into the placing groove 20. At this time, the two sides of the battery block are fixed by the insulating anti-skid strips 13 on the two sides of the movable plate 17. Then, the supporting plate 8 is installed on the connecting rod 2 by the sliding connection between the limiting sliding plate 9 and the limiting sliding groove 7 inside the connecting rod 2. In addition, the heat of the battery block is dissipated by the protrusions (not marked in the figure) on the blocking cylinder 11 and the heat dissipation holes 12. Finally, the two push plates 28 are subjected to opposite forces, the rectangular spring 29 is squeezed by the fixing block 27, the distance between the two ends of the fixing block 27 is less than the distance between the inner sides of the two positioning plates 24, and the mounting plate 26 is inserted into the limiting sliding groove 7. When the sealing plate 25 is pressed to the bottom, the fixing block 27 is aligned with the fixed hole 23. At this time, the force applied to the push plate 28 is removed. The fixing block 27 is reset by the rectangular spring 29 and inserted into the fixed hole 23, thereby realizing the rapid installation and disassembly of the lithium battery assembly and improving the maintenance efficiency.

[0039] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A connector, characterized by: The connecting piece comprises: A rotating plate (3), one end of which is fixedly connected with a connecting rod (2) at each corner of the side wall, a limiting sliding groove (7) is formed on the opposite side wall of each pair of connecting rods (2), a positioning plate (24) is fixedly connected with the end of the side wall of each pair of connecting rods (2) away from the rotating plate (3), and a fixing hole (23) is formed between the opposite side walls of the two positioning plates (24); A support plate (8) is provided with a plurality of support plates (8) on one side of the rotating plate (3), and a movable plate (17) is arranged at the inner ends of each support plate (8), a telescopic spring (14) and a pressing plate (15) are arranged between the two movable plates (17), a fixed rod (10) and a limiting sliding plate (9) are arranged at the two ends of the side of each support plate (8) close to the connecting rod (2), and a blocking cylinder (11) is arranged on the inner side of each pair of fixed rods (10); and A sealing plate (25) is connected with the connecting rod (2), and the symmetric two ends of the sealing plate (25) are provided with a mounting plate (26), and the inner ends of the two ends of the sealing plate (25) are provided with a fixed block (27), a push plate (28) and a rectangular spring (29). The support plate (8) is "L"-shaped, a through hole (16) is formed in the middle of the side wall of one end of the support plate (8), a placing groove (20) is formed in the middle of the side wall of one end of the through hole (16), and a fixed plate (21) is arranged on the side wall of the support plate (8) opposite to the placing groove (20). The movable plate (17) is "L"-shaped, a plurality of insulating anti-skid strips (13) are fixedly connected to the inner side wall of one end of the movable plate (17), a rotating rod (22) is arranged at the corner of one end of the movable plate (17), and the two ends of the rotating rod (22) are rotatably connected with the inner walls of the opposite sides of the through hole (16).

2. A connector according to claim 1, wherein: Two supporting legs (1) are fixedly connected to the side wall of one end of the rotating plate (3), a plurality of evenly distributed insulating rubber strips (4) are arranged on the side wall connecting the rotating plate (3) and the connecting rod (2), and the insulating rubber strips (4) are arranged on the inner sides of the two pairs of connecting rods (2).

3. A connector according to claim 1, wherein: One end of the telescopic spring (14) penetrates through the through hole (16) and is fixedly connected with the fixed plate (21), the other end of the telescopic spring (14) is fixedly connected with the middle of the side wall of one end of the pressing plate (15), the side wall connected with the telescopic spring (14) of the pressing plate (15) is provided with a hinge seat (19) at both ends, the hinge seat (19) is rotatably connected with one end of the movable plate (17) away from the rotating rod (22), and the other end of the pressing plate (15) is provided with an insulating pad (18).

4. A connector according to claim 1, wherein: A plurality of blocking cylinders (11) are evenly fixedly connected to the opposite side walls of each pair of fixed rods (10), the blocking cylinder (11) is hexagonal, a plurality of evenly distributed heat dissipation holes (12) are formed in each side wall of the blocking cylinder (11), and the opposite side walls of each pair of fixed rods (10) are fixedly connected with limiting sliding plates (9), and the limiting sliding plate (9) is "convex"-shaped.

5. A connector according to claim 1, wherein: Two mounting plates (26) are both "T" shaped, two mounting plates (26) are respectively fixedly connected with two end side walls of the sealing plate (25) symmetrically, one end side wall of the sealing plate (25) is provided with a handle (5), one end of the sealing plate (25) is provided with two support legs (6).

6. A connector according to claim 1, wherein: Two ends of the sealing plate (25) connected with two mounting plates (26) are both internally provided with a movable slot (30), a movable hole (32) is arranged between an inner wall of one end of the movable slot (30) and an outer wall of the mounting plate (26), the size of the movable slot (30) is greater than the size of the movable hole (32), a moving slot hole (31) is arranged between the movable slot (30) and the side wall of the sealing plate (25).

7. A connector according to claim 1, wherein: The push plate (28) is "convex" shaped, one end of the push plate (28) is fixedly connected with one end side wall of the fixed block (27) located in the movable slot (30) by penetrating the moving slot hole (31), the other end of the fixed block (27) is connected with the fixed hole (23) by penetrating the movable hole (32), one end of the fixed block (27) away from the movable hole (32) is fixedly connected with one end of the rectangular spring (29), the other end of the rectangular spring (29) is fixedly connected with the inner wall of the movable slot (30) away from the mounting plate (26).

8. A lithium-ion battery pack, characterized by: The connecting piece comprises the connecting piece of any one of claims 1-7.

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