Lithium battery tab structure with adjustable bending angle

Abstract

The utility model provides a lithium battery tab structure with an adjustable bending angle, which relates to the technical field of lithium batteries and comprises a protective shell, a lithium battery arranged in the protective shell, a mounting plate arranged at the top of the protective shell, a positive tab and a negative tab arranged at the top of the lithium battery, and an adjusting assembly arranged in the mounting plate, the adjusting assembly is arranged in the protective shell and used for adjusting the angles of the positive tab and the negative tab, the adjusting assembly comprises a rotating rod, a tab groove and a gear b, the heat dissipation assembly is arranged in the protective shell and used for reducing the temperature in the protective shell, and the heat dissipation assembly comprises a heat conduction plate, a heat conduction column and a heat dissipation plate. The positions of the positive electrode lug and the negative electrode lug can be adjusted through the adjusting assembly, the device is suitable for battery assembly scenes of different sizes or models, heat of the lithium battery can be conducted to the outside through the heat dissipation assembly, and the temperature rise of the battery is remarkably reduced.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery technology, specifically to a lithium battery tab structure with an adjustable bending angle. Background Technology

[0002] The tabs of a lithium battery are key conductive structures that connect the internal electrode materials of the cell to the external circuit. They are usually made of metal foil (such as copper or aluminum), with the positive and negative tabs corresponding to the positive aluminum foil and the nickel-plated copper foil, respectively. Their design directly affects the battery's internal resistance, safety, and fast-charging performance. Precision welding processes are required to ensure conductivity stability and corrosion resistance, making them one of the core components for efficient charging and discharging of batteries.

[0003] Because different lithium batteries have different assembly methods, the positions of the two tabs are difficult to adjust simultaneously when bending the tabs of some lithium batteries, which affects the assembly efficiency of the workers. On the other hand, when lithium batteries are in operation, protective shells are often added to avoid damage. However, after adding protective shells, it is easy to make it difficult for the heat dissipated by the battery to be dissipated, which can damage the battery life. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a lithium battery tab structure with an adjustable bending angle. By adjusting the components, the positions of the positive and negative tabs can be adjusted, which is suitable for battery assembly scenarios of different sizes or models. The heat dissipation components can conduct the heat of the lithium battery to the outside, significantly reducing the battery temperature rise.

[0005] The technical problem to be solved by this utility model is achieved by the following technical solution:

[0006] An adjustable bending angle lithium battery tab structure includes: a protective shell, a lithium battery disposed inside the protective shell, a mounting plate disposed on the top of the protective shell, a positive tab and a negative tab disposed on the top of the lithium battery, an adjustment component disposed inside the mounting plate for adjusting the angle of the positive tab and the negative tab, the adjustment component including: a rotating rod, a tab groove and a gear b, and a heat dissipation component disposed inside the protective shell for reducing the internal temperature of the protective shell, the heat dissipation component including: a heat-conducting plate, a heat-conducting pillar and a heat dissipation plate.

[0007] Preferably, the mounting plate has two storage slots inside, and a protective cylinder is provided on the top of the mounting plate. The protective cylinder has two mounting slots inside. One end of the positive electrode tab and the negative electrode tab passes through the corresponding storage slot and mounting slot respectively, extending to the surface of the mounting plate. A turntable a is provided on one side of the mounting plate, and a rotating rod is connected to one side of the turntable a. The rotating rod has two electrode tab slots inside, with the positive electrode tab and the negative electrode tab located inside the corresponding electrode tab slots. A gear groove is provided inside the protective cylinder, and one end of the rotating rod passes through the gear groove and is connected to a gear. Wheel a, the mounting plate has a control groove inside, the control groove is provided with gear b, the two sides of gear b are rotatably connected to the control groove through bearings, gear a and gear b are meshed together, the mounting plate has a turntable b on one side, the turntable b is connected to a connecting rod on one side, the connecting rod is connected to a push rod on one side, one end of the push rod has teeth that mesh with gear b, the mounting plate has a push rod groove inside, the mounting plate has a stop rod rotatably connected to one side of the mounting plate through bearings, the bottom of the stop rod is in contact with the top of the connecting rod and the tail of the push rod.

[0008] Preferably, the protective shell has two heat-conducting plates inside, each with a thermally conductive silicone pad on one side. The silicone pads are in contact with the lithium battery side. Each heat-conducting plate has four heat-conducting pillars connected to one side, and each of the four heat-conducting pillars has a threaded hole inside. The protective shell has heat dissipation plates on both sides, each with a through hole corresponding to the threaded hole. A bolt is installed inside each through hole, with one end of the bolt passing through the corresponding through hole and threadedly connected to the corresponding threaded hole.

[0009] The beneficial effects of this utility model are:

[0010] The advantage of this invention is that by utilizing the rotating rod, tab groove, and gear b in the adjustment assembly, the positions of the positive and negative tabs can be dynamically adjusted through the adjustment mechanism such as the turntable a and push rod, making it suitable for battery assembly scenarios of different sizes or models.

[0011] Secondly, through the heat-conducting plate, heat-conducting pillar, and heat sink in the heat dissipation assembly, the thermally conductive silicone directly contacts the lithium battery, conducting heat to the heat-conducting plate. Subsequently, the heat-conducting plate conducts heat to the heat sink through the heat-conducting pillar, thereby transferring the heat of the lithium battery to the outside and significantly reducing the battery temperature rise. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This is a front sectional view of the overall structure of this utility model.

[0014] Figure 3 This is a half-sectional view of the overall structure of this utility model.

[0015] Figure 4 This is a cross-sectional view of the turntable a structure of this utility model.

[0016] Figure 5 This is a cross-sectional view of the push rod structure of this utility model.

[0017] Figure 6 This is a cross-sectional view of the heat sink structure of this utility model.

[0018] Figure 7 For the present utility model Figure 3 Enlarged view of point A.

[0019] Figures 1-7 Components: 1. Protective shell; 101. Lithium battery; 102. Mounting plate; 103. Positive electrode tab; 104. Negative electrode tab; 2. Storage slot; 201. Protective cylinder; 202. Mounting slot; 3. Turntable a; 301. Rotating rod; 302. Electrode tab slot; 4. Gear slot; 401. Gear a; 402. Control slot; 403. Gear b; 5. Turntable b; 501. Push rod; 502. Push rod slot; 503. Stop rod; 504. Connecting rod; 6. Heat-conducting plate; 601. Thermal conductive silicone; 7. Heat-conducting pillar; 701. Threaded hole; 702. Bolt; 703. Heat sink. Detailed Implementation

[0020] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0021] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0022] like Figures 1-7 As shown, an adjustable bending angle lithium battery tab structure includes a protective shell 1, a lithium battery 101 disposed inside the protective shell 1, a mounting plate 102 disposed on the top of the protective shell 1, a positive tab 103 and a negative tab 104 disposed on the top of the lithium battery 101, an adjustment component disposed inside the mounting plate 102 for adjusting the angle of the positive tab 103 and the negative tab 104, the adjustment component including: a rotating rod 301, a tab groove 302 and a gear b403, and a heat dissipation component disposed inside the protective shell 1 for reducing the internal temperature of the protective shell 1, the heat dissipation component including: a heat-conducting plate 6, a heat-conducting pillar 7 and a heat dissipation plate 703.

[0023] The adjustment assembly utilizes the rotating rod 301, tab groove 302, and gear b403, along with adjustment mechanisms such as turntable a3 and push rod 501, to allow dynamic adjustment of the positions of the positive tab 103 and negative tab 104. This is suitable for battery assembly scenarios of different sizes or models. Furthermore, the heat dissipation assembly uses the heat-conducting plate 6, heat-conducting pillar 7, and heat dissipation plate 703. The heat is directly contacted between the heat-conducting silicone 601 and the lithium battery 101, transferring heat to the heat-conducting plate 6. Subsequently, the heat-conducting plate 6 transfers heat to the heat dissipation plate 703 via the heat-conducting pillar 7, thereby conducting the heat of the lithium battery 101 to the outside and significantly reducing the battery temperature rise.

[0024] The mounting plate 102 has two storage slots 2 inside, and a protective cylinder 201 is provided on the top of the mounting plate 102. The protective cylinder 201 has two mounting slots 202 inside. One end of the positive electrode tab 103 and the negative electrode tab 104 passes through the corresponding storage slot 2 and mounting slot 202, respectively, and extends to the surface of the mounting plate 102. A turntable a3 is provided on one side of the mounting plate 102, and a rotating rod 301 is connected to one side of the turntable a3. The rotating rod 301 has two electrode tab slots 302 inside, with the positive electrode tab 103 and the negative electrode tab 104 located inside the corresponding electrode tab slots 302. A gear slot 4 is provided inside the protective cylinder 201, and one end of the rotating rod 301 passes through the gear slot 4 and is connected to a gear a40. 1. A control groove 402 is provided inside the mounting plate 102. A gear b403 is provided in the control groove 402. The two sides of the gear b403 are rotatably connected to the control groove 402 through bearings. Gear a401 and gear b403 are meshed together. A turntable b5 is provided on one side of the mounting plate 102. A connecting rod 504 is connected to one side of the turntable b5. A push rod 501 is connected to one side of the connecting rod 504. One end of the push rod 501 is provided with teeth that mesh with the gear b403. A push rod groove 502 is provided inside the mounting plate 102. A stop rod 503 is rotatably connected to one side of the mounting plate 102 through bearings. The bottom of the stop rod 503 is in contact with the top of the connecting rod 504 and the tail of the push rod 501.

[0025] When it is necessary to adjust the bending angles of the positive electrode 103 and the negative electrode 104 simultaneously to meet the corresponding assembly requirements, the turntable a3 is manually rotated. The turntable a3 will drive the rotating rod 301 to rotate synchronously. Since the positive electrode 103 and the negative electrode 104 pass through the corresponding electrode groove 302, when the rotating rod 301 rotates, it will also drive the positive electrode 103 and the negative electrode 104 to adjust their angles. During the angle adjustment, the arc-shaped positive electrode 103 and the negative electrode 104 inside the storage groove 2 will be straightened, and the length of the positive electrode 103 and the negative electrode 104 at the electrode groove 302 will be supplemented. In this way, the positive electrode 103 and the negative electrode 104 will be prevented from breaking due to excessive stretching when bending. When the required angle is reached, the turntable b5 is pushed to make the angle... Push rod 501 moves axially in push rod groove 502. Then, the toothed end of push rod 501 meshes with gear b403, restricting the rotation of gear b403, which in turn restricts the rotation of gear a401. Since gear a401 is connected to rotating rod 301, rotating rod 301 cannot rotate when gear a401 cannot rotate. Next, stop rod 503 is rotated so that the bottom of stop rod 503 fits against the top of connecting rod 504, preventing stop rod 503 from being unable to stably abut against the tail of push rod 501 due to bearing rotation. By simultaneously adjusting the bending angles of positive electrode tab 103 and negative electrode tab 104 and fixing the angles after adjustment, the assembly efficiency of workers when assembling lithium batteries can be effectively improved.

[0026] The protective shell 1 has two heat-conducting plates 6 inside. Each heat-conducting plate 6 has a thermally conductive silicone 601 on one side. One side of the two thermally conductive silicone 601 is attached to the side of the lithium battery 101. Each side of the two heat-conducting plates 6 is connected to four heat-conducting pillars 7. Each of the four heat-conducting pillars 7 has a threaded hole 701 inside. Both sides of the protective shell 1 have heat dissipation plates 703. Each heat dissipation plate 703 has a through hole corresponding to the threaded hole 701. A bolt 702 is installed inside the through hole. One end of the bolt 702 passes through the corresponding through hole and is threadedly connected to the corresponding threaded hole 701.

[0027] To prevent damage during operation, lithium batteries often require a protective casing. However, this casing can hinder heat dissipation, potentially shortening battery life. During charging and discharging, the heat generated by the lithium battery 101 is first transferred to the heat-conducting plates 6 on both sides via the thermally conductive silicone 601 on its surface. The silicone 601, with its high thermal conductivity and flexibility, fills the microscopic gaps between the lithium battery surface and the heat-conducting plates 6, eliminating the air insulation layer and ensuring efficient heat dissipation. The heat-conducting plates 6, made of materials such as aluminum alloy, effectively conduct heat. The heat is then transferred from the heat-conducting plates 6 to the heat sink 703 via the heat-conducting pillars 7. The heat is then diffused to the outside through the heat-conducting plates 6 and 703, thus dissipating heat from the lithium battery 101 and preventing damage to its lifespan due to heat loss.

[0028] Working principle:

[0029] When it is necessary to adjust the bending angles of the positive electrode 103 and the negative electrode 104 simultaneously to meet the corresponding assembly requirements, the turntable a3 is manually rotated. The turntable a3 will drive the rotating rod 301 to rotate synchronously. Since the positive electrode 103 and the negative electrode 104 pass through the corresponding electrode groove 302, when the rotating rod 301 rotates, it will also drive the positive electrode 103 and the negative electrode 104 to adjust their angles. During the angle adjustment, the arc-shaped positive electrode 103 and the negative electrode 104 inside the storage groove 2 will be straightened, and the length of the positive electrode 103 and the negative electrode 104 at the electrode groove 302 will be supplemented. In this way, the positive electrode 103 and the negative electrode 104 will be prevented from breaking due to excessive stretching when bending. When the required angle is reached, the turntable b5 is pushed to make the angle... Push rod 501 moves axially in push rod groove 502. Then, the toothed end of push rod 501 meshes with gear b403, restricting the rotation of gear b403, which in turn restricts the rotation of gear a401. Since gear a401 is connected to rotating rod 301, rotating rod 301 cannot rotate when gear a401 cannot rotate. Next, stop rod 503 is rotated so that the bottom of stop rod 503 fits against the top of connecting rod 504, preventing stop rod 503 from being unable to stably abut against the tail of push rod 501 due to bearing rotation. By simultaneously adjusting the bending angles of positive electrode tab 103 and negative electrode tab 104 and fixing the angles after adjustment, the assembly efficiency of workers when assembling lithium batteries can be effectively improved.

[0030] To prevent damage during operation, lithium batteries often require a protective casing. However, this casing can hinder heat dissipation, potentially shortening battery life. During charging and discharging, the heat generated by the lithium battery 101 is first transferred to the heat-conducting plates 6 on both sides via the thermally conductive silicone 601 on its surface. The silicone 601, with its high thermal conductivity and flexibility, fills the microscopic gaps between the lithium battery surface and the heat-conducting plates 6, eliminating the air insulation layer and ensuring efficient heat dissipation. The heat-conducting plates 6, made of materials such as aluminum alloy, effectively conduct heat. The heat is then transferred from the heat-conducting plates 6 to the heat sink 703 via the heat-conducting pillars 7. The heat is then diffused to the outside through the heat-conducting plates 6 and 703, thus dissipating heat from the lithium battery 101 and preventing damage to its lifespan due to heat loss.

[0031] The above provides a detailed description of an adjustable bending angle lithium battery tab structure provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A lithium battery tab structure with an adjustable bending angle, characterized in that, include: A protective shell (1) is provided inside the protective shell (1), and a mounting plate (102) is provided on the top of the protective shell (1). A positive electrode tab (103) and a negative electrode tab (104) are provided on the top of the lithium battery (101). An adjustment component disposed inside the mounting plate (102) is used to adjust the angle of the positive electrode tab (103) and the negative electrode tab (104). The adjustment component includes: a rotating rod (301), an electrode tab groove (302), and a gear b (403). The heat dissipation component is disposed inside the protective shell (1) to reduce the internal temperature of the protective shell (1). The heat dissipation component includes: a heat-conducting plate (6), a heat-conducting column (7), and a heat dissipation plate (703).

2. The adjustable bending angle lithium battery tab structure according to claim 1, characterized in that, The mounting plate (102) has two storage slots (2) inside. The top of the mounting plate (102) is provided with a protective cylinder (201). The protective cylinder (201) has two mounting slots (202) inside. One end of the positive electrode (103) and the negative electrode (104) passes through the corresponding storage slot (2) and mounting slot (202) in sequence and extends to the surface of the mounting plate (102).

3. The adjustable bending angle lithium battery tab structure according to claim 2, characterized in that, A turntable a (3) is provided on one side of the mounting plate (102), and a rotating rod (301) is connected to one side of the turntable a (3). Two electrode slots (302) are opened inside the rotating rod (301), and the positive electrode (103) and the negative electrode (104) are located inside the corresponding electrode slots (302).

4. The adjustable bending angle lithium battery tab structure according to claim 3, characterized in that, The protective cylinder (201) has a gear groove (4) inside, and one end of the rotating rod (301) passes through the gear groove (4) and is connected to a gear a (401). The mounting plate (102) has a control groove (402) inside, and a gear b (403) is provided in the control groove (402). The two sides of the gear b (403) are rotatably connected to the control groove (402) through bearings. The gear a (401) and the gear b (403) are meshed together.

5. The adjustable bending angle lithium battery tab structure according to claim 4, characterized in that, A turntable b (5) is provided on one side of the mounting plate (102). A connecting rod (504) is connected to one side of the turntable b (5). A push rod (501) is connected to one side of the connecting rod (504). One end of the push rod (501) is provided with teeth that mesh with the gear b (403). A push rod groove (502) is provided inside the mounting plate (102). A stop rod (503) is rotatably connected to one side of the mounting plate (102) through a bearing. The bottom of the stop rod (503) is in contact with the top of the connecting rod (504) and with the tail of the push rod (501).

6. The adjustable bending angle lithium battery tab structure according to claim 1, characterized in that, The protective shell (1) has two heat-conducting plates (6) inside. Each of the two heat-conducting plates (6) has a thermally conductive silicone rubber (601) on one side. The two thermally conductive silicone rubber (601) are attached to the side of the lithium battery (101).

7. The adjustable bending angle lithium battery tab structure according to claim 6, characterized in that, Each of the two heat-conducting plates (6) is connected to four heat-conducting pillars (7) on one side. Each of the four heat-conducting pillars (7) has a threaded hole (701) inside. Each of the protective shells (1) has a heat dissipation plate (703) on both sides. The heat dissipation plate (703) has a through hole corresponding to the threaded hole (701). A bolt (702) is installed inside the through hole. One end of the bolt (702) passes through the corresponding through hole and is threadedly connected to the corresponding threaded hole (701).

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