Safe lithium battery shell

Abstract

The utility model belongs to the field of battery shells, and particularly relates to a safe lithium battery shell which comprises a shell body, a special-shaped groove is formed in the surface of the shell body, a positioning plate is arranged on the surface of the special-shaped groove, a plurality of wire outlet holes are formed in the surface of the positioning plate, and a positioning assembly is arranged on the surface of the positioning plate. The positioning assembly comprises a positioning block on the surface of the positioning plate, a positioning hole coaxial with the wire outlet hole is formed in the surface of the positioning block, a threaded hole is formed in the position, over the positioning hole, of the top of the positioning block, and a threaded rod is in threaded connection with the interior of the threaded hole; through the linkage design of a threaded rod and an elastic arc-shaped positioning piece of the positioning assembly, the stable clamping function of a cable is achieved, the threaded rod is rotated to drive the elastic arc-shaped positioning piece to press the cable downwards, a locking nut locks the position of the threaded rod, the threaded rod presses the elastic arc-shaped positioning piece downwards to generate deformation to clamp the cable, and the locking nut fixes the position of the threaded rod through friction force. The problem of connection falling caused by cable shaking is solved, and the stability of connection between the battery and the external equipment is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery casings, specifically a safe lithium battery casing. Background Technology

[0002] Lithium batteries are chemical power sources that use lithium metal or lithium alloy as electrode materials and store and release electrical energy through oxidation-reduction reactions. The surface of a lithium battery is protected by a casing.

[0003] In the prior art, such as in CN213042958U, a safe lithium battery casing is disclosed, which includes a battery body. The lower end of the battery body is provided with an annular groove for outward deformation when heated. An insulating post is fixedly provided in the middle of the annular groove. The insulating post does not contact the conductive sheet before deformation. A heat dissipation layer is sleeved on the outer wall of the battery body. An insulating layer is provided between the heat dissipation layer and the battery body. A protective shell is sleeved on the outer wall of the heat dissipation layer. A conductive sheet is provided at the lower end of the battery body. A conductive ring is provided between the conductive sheet and the battery body.

[0004] Although the aforementioned patent has a heat dissipation layer on the outer wall to effectively cool the battery body, and the device has a protective shell made of rigid material to effectively protect the internal battery body, the battery needs to be connected to external electrical equipment via a cable. During connection, the cable swings arbitrarily, causing the cable to sway and detach from the battery connection, affecting use. At the same time, the cable may be excessively bent at its initial point of exiting the shell, causing damage to the outer sheath, short circuit of the wires and battery, affecting service life and reducing safety. Therefore, a safe lithium battery shell is proposed to address the above problems. Utility Model Content

[0005] To overcome the shortcomings of existing technology, batteries need to be connected to external electrical equipment via cables. However, during connection, the cables swing erratically, causing them to detach from the battery connection and affecting usability. Additionally, excessive bending of the cables at their initial exit point from the casing can damage the casing, leading to short circuits in the wires and affecting battery life. This invention proposes a safe lithium battery casing.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A safe lithium battery casing according to this utility model includes a casing, an irregular groove is formed on the surface of the casing, a positioning plate is provided on the surface of the irregular groove, a plurality of wire outlet holes are formed on the surface of the positioning plate, and a positioning component is provided on the surface of the positioning plate; the positioning component includes a positioning block on the surface of the positioning plate, a positioning hole coaxial with the wire outlet hole is formed on the surface of the positioning block, a threaded hole is formed on the top of the positioning block directly above the positioning hole, a threaded rod is threadedly connected inside the threaded hole, the bottom end of the threaded rod passes through the threaded hole and extends into the positioning hole, and an elastic arc-shaped positioning piece is provided on the surface of the threaded rod; an elastic conical cover is provided on the surface of the positioning hole, one end of the elastic conical cover is connected to a rubber tube, a cavity is formed inside the rubber tube, a long spiral spring wire is wound inside the cavity, and a horn tube is provided at one end of the rubber tube; a cooling fan is provided on the side of the casing, and a protective cover is provided on the surface of the cooling fan.

[0007] Preferably, the taper of the elastic conical cover is 15° to 30°, and the wall thickness of the rubber tube gradually decreases axially from the elastic conical cover to the horn tube.

[0008] Preferably, the cooling fan is fixed to the side of the housing by a snap fastener, and the mesh diameter of the protective cover is 1 / 3 to 1 / 2 of the spacing between the cooling fan blades.

[0009] Preferably, the cross-section of the elastic arc-shaped positioning piece is semi-circular, and the material of the elastic arc-shaped positioning piece is silicone rubber with anti-slip particles on the surface.

[0010] Preferably, the outlet end of the horn tube is turned outward to form an arc-shaped bevel, and the inner wall of the horn tube is coated with a wear-resistant ceramic coating.

[0011] Preferably, the bottom surface of the locking nut is provided with an annular groove, and an elastic sealing ring is embedded in the annular groove, the thickness of which is greater than the depth of the annular groove.

[0012] The advantages of this utility model are:

[0013] 1. This utility model achieves a stable clamping function for cables by linking the threaded rod and the elastic arc-shaped positioning plate of the positioning component. The rotating threaded rod drives the elastic arc-shaped positioning plate to press down on the cable, and the locking nut locks the position of the threaded rod. The threaded rod presses down on the elastic arc-shaped positioning plate to deform and clamp the cable. The locking nut fixes the position of the threaded rod through friction, which solves the problem of connection detachment caused by cable shaking and improves the stability of the connection between the battery and external devices.

[0014] 2. This utility model achieves cable bending protection through the spiral winding design of the elastic conical cover and the spring wire of the rubber tube. The elastic conical cover guides the cable into the rubber tube, and the spring wire provides radial support force in the cavity, dispersing bending stress. The spring wire forms elastic support in the cavity of the rubber tube, dispersing bending stress, solving the short circuit risk caused by cable sheath damage, and improving the safety of use. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the shell structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the positioning component structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the rubber tube structure of this utility model.

[0020] In the diagram: 1. Shell; 2. Irregular groove; 3. Positioning plate; 4. Cable outlet; 5. Positioning assembly; 51. Positioning block; 52. Positioning hole; 53. Threaded hole; 531. Elastic conical cover; 532. Rubber tube; 533. Cavity; 534. Spring wire; 535. Horn tube; 54. Threaded rod; 55. Elastic arc-shaped positioning piece; 56. Locking nut; 6. Cooling fan; 7. Protective cover. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0022] Please see Figures 1-4As shown, a safe lithium battery casing includes a casing 1. A shaped groove 2 is formed on the surface of the casing 1. A positioning plate 3 is provided on the surface of the shaped groove 2. Several outlet holes 4 are formed on the surface of the positioning plate 3. A positioning component 5 is provided on the surface of the positioning plate 3. The positioning component 5 includes a positioning block 51 on the surface of the positioning plate 3. A positioning hole 52, coaxial with the outlet holes 4, is formed on the surface of the positioning block 51. A threaded hole 53 is formed on the top of the positioning block 51 directly above the positioning hole 52. A threaded rod 54 is threadedly connected inside the threaded hole 53. The bottom end of the threaded rod 54 passes through the threaded hole 53 and extends into the positioning hole 52, where an elastic arc-shaped positioning piece 55 is provided. A locking nut 56 is provided on the surface of the threaded rod 54. An elastic conical cover 531 is provided on the surface of the positioning hole 52. One end of the elastic conical cover 531 is connected to a rubber tube 532. A cavity 533 is formed inside the rubber tube 532. A long spiral spring wire 534 is wound inside the cavity 533. A horn tube 535 is provided at one end of the rubber tube 532. A cooling fan 6 is provided on the side of the casing 1, and a protective cover 7 is provided on the surface of the cooling fan 6.

[0023] During operation, the cable passes through the outlet hole 4 into the positioning hole 52. The rotating threaded rod 54 presses down the elastic arc-shaped positioning piece 55 to clamp the cable, and the locking nut 56 fixes the position of the threaded rod 54. The cable continues to pass through the elastic conical cover 531 and enters the rubber tube 532. The spring wire 534 supports the bending arc of the cable in the cavity 533. After the cooling fan 6 is started, the airflow passes through the mesh of the protective cover 7 to dissipate heat. The combination of elastic clamping and bending protection prevents the cable from falling off and the outer sheath from being damaged. The heat dissipation design ensures that the battery operating temperature is stable.

[0024] Furthermore, the taper of the elastic conical cover 531 is 15° to 30°, and the wall thickness of the rubber tube 532 gradually decreases axially from the elastic conical cover 531 to the horn tube 535.

[0025] During operation, the elastic conical cover 531 guides the cable into the rubber tube 532 with a taper of 15° to 30°. The wall thickness of the rubber tube 532 gradually decreases from the conical cover to the horn tube 535. Combined with the spiral support of the spring wire 534, it can adapt to different bending angles. The taper and gradually changing wall thickness optimize the cable guidance, disperse bending stress, and extend the service life of the cable.

[0026] Furthermore, the cooling fan 6 is fixed to the side of the housing 1 by a clip, and the mesh diameter of the protective cover 7 is 1 / 3 to 1 / 2 of the blade spacing of the cooling fan 6;

[0027] During operation, the cooling fan 6 is fixed to the side of the housing 1 by a clip. The diameter of the mesh of the protective cover 7 is set to 1 / 3 to 1 / 2 of the blade spacing to balance airflow efficiency and foreign object obstruction. The mesh size is adapted to airflow requirements to prevent external particles from entering while improving heat dissipation efficiency.

[0028] Furthermore, the cross-section of the elastic arc-shaped positioning piece 55 is semi-circular, and the material of the elastic arc-shaped positioning piece 55 is silicone rubber with anti-slip particles on the surface.

[0029] During operation, the elastic arc-shaped positioning piece 55 made of silicone rubber deforms and fits the cable surface after being pressed down by the threaded rod 54. Anti-slip particles are embedded in the surface of the cable to increase friction. The silicone rubber deformation clamps and prevents cable damage, and the anti-slip particles suppress micro-displacement caused by vibration.

[0030] Furthermore, the outlet end of the horn tube 535 is turned outward to form an arc-shaped bevel, and the inner wall of the horn tube 535 is coated with a wear-resistant ceramic coating.

[0031] During operation, the outward-curved bevel of the 535 horn tube outlet reduces the curvature of cable friction, and the wear-resistant ceramic coating on the inner wall reduces long-term friction loss. The bevel and the wear-resistant coating work together to protect the cable sheath and avoid the risk of short circuit caused by mechanical damage.

[0032] Furthermore, the bottom surface of the locking nut 56 is provided with an annular groove, and an elastic sealing ring is embedded in the annular groove. The thickness of the elastic sealing ring is greater than the depth of the annular groove.

[0033] During operation, the annular groove on the bottom of the locking nut 56 is embedded with an elastic sealing ring. The sealing ring expands under pressure to fill the thread gap and block dust and moisture. The elastic sealing ring improves the sealing performance of the threaded connection and prevents loosening or corrosion caused by environmental erosion.

[0034] Working principle: After the cable passes through the outlet hole 4 into the positioning hole 52, the rotating threaded rod 54 drives the elastic arc-shaped positioning plate 55 to press down and clamp the cable, and fix it through the locking nut 56. The cable is guided into the rubber tube 532 through the elastic conical cover 531. The spirally wound spring wire 534 in the cavity 533 supports the bending curvature of the cable and avoids damage to the outer sheath. The arc-shaped bevel and wear-resistant coating of the horn tube 535 reduce cable friction. At the same time, the cooling fan 6 exhausts the heat inside the shell 1 through the mesh of the protective cover 7. The elastic sealing ring at the bottom of the locking nut 56 blocks dust and moisture, realizing the integrated functions of stable cable clamping, bending protection, efficient heat dissipation and environmental sealing.

[0035] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, or similar improvements made within the theoretical and principle content of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A safety lithium battery case, characterized by: Includes a housing (1), the surface of the housing (1) has an irregular groove (2), the surface of the irregular groove (2) is provided with a positioning plate (3), the surface of the positioning plate (3) has several wire outlet holes (4), and the surface of the positioning plate (3) is provided with a positioning component (5). The positioning component (5) includes a positioning block (51) on the surface of the positioning plate (3). The positioning block (51) has a positioning hole (52) on its surface that is coaxial with the wire outlet hole (4). The top of the positioning block (51) has a threaded hole (53) directly above the positioning hole (52). A threaded rod (54) is threaded inside the threaded hole (53). The bottom end of the threaded rod (54) passes through the threaded hole (53) and extends into the positioning hole (52), where an elastic arc-shaped positioning piece (55) is provided. A locking nut (56) is provided on the surface of the threaded rod (54). The positioning hole (52) is provided with an elastic conical cover (531), one end of which is connected to a rubber tube (532). A cavity (533) is opened inside the rubber tube (532), and a long spiral spring wire (534) is wound inside the cavity (533). A horn tube (535) is provided at one end of the rubber tube (532). A cooling fan (6) is provided on the side of the housing (1), and a protective cover (7) is provided on the surface of the cooling fan (6).

2. A safety lithium battery case according to claim 1, wherein: The taper of the elastic conical cover (531) is 15° to 30°, and the wall thickness of the rubber tube (532) gradually decreases axially from the elastic conical cover (531) to the horn tube (535).

3. The safety lithium battery shell according to claim 1, wherein: The cooling fan (6) is fixed to the side of the housing (1) by a buckle, and the mesh diameter of the protective cover (7) is 1 / 3 to 1 / 2 of the blade spacing of the cooling fan (6).

4. The safety lithium battery shell according to claim 1, wherein: The cross-section of the elastic arc-shaped positioning piece (55) is semi-circular, and the material of the elastic arc-shaped positioning piece (55) is silicone rubber with anti-slip particles on the surface.

5. The safety lithium battery shell according to claim 1, wherein: The outlet end of the horn tube (535) is turned outward to form an arc-shaped bevel, and the inner wall of the horn tube (535) is coated with a wear-resistant ceramic coating.

6. The safety lithium battery shell according to claim 1, wherein: The bottom surface of the locking nut (56) is provided with an annular groove, and an elastic sealing ring is embedded in the annular groove. The thickness of the elastic sealing ring is greater than the depth of the annular groove.

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