A low temperature special lithium battery pack

Abstract

The utility model discloses a low-temperature special lithium battery pack, which relates to the technical field of lithium battery packs and comprises an external protective shell, one side of the inner part of the external protective shell is fixedly connected with a telescopic rod, the outer side of the telescopic rod is sleeved with a No. 1 spring, and one side of the telescopic rod is installed with a heat preservation protection box. The utility model provides a limit plate, a limit groove is provided in the limit plate, a limit rod is slidably connected in the limit groove, a slider is fixedly connected below the limit rod, a battery fastening plate is fixedly connected to one side of the slider, a support plate is fixedly connected to the lower part of the limit plate, a slide groove matched with the slider is provided in the support plate, and the limit plate is rotated. Through the force of rotation, the limit groove will squeeze the limit rod, so that the battery fastening plate is tightened inward, thereby fixing the battery, and the spacing between the battery fastening plates can be adjusted according to different battery sizes.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery packs, in particular to a low-temperature special lithium battery pack. Background Art

[0002] Lithium battery is a low-temperature special lithium battery pack with high energy density, which has the advantages of high voltage, long life, low self-discharge rate, etc., and is widely used in various fields. Lithium battery pack is composed of several lithium battery units connected in series or parallel to meet the energy requirements of different occasions.

[0003] Patent No. CN215451608U discloses a lithium battery pack for use in a low-temperature environment. The thermal insulation protection box of the device is movably connected to the middle part of the support rod, and four springs are installed on both sides of the thermal insulation protection box. During the transportation process, when vibration occurs, it is buffered by the elastic action of the device spring. In this way, the influence of the thermal insulation protection box of the device during the vibration process can be reduced, thereby increasing the stability of the device during use.

[0004] The above-mentioned lithium battery pack for use in a low-temperature environment can only be installed with one type of lithium battery, and lithium batteries of different types and sizes cannot be installed according to needs. Summary of the invention

[0005] The purpose of the utility model is to provide a low-temperature special lithium battery pack in order to solve the problem.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low-temperature special lithium battery pack, comprising an external protective shell, one side of the interior of the external protective shell is fixedly connected with a telescopic rod, the outer side of the telescopic rod is sleeved with a No. 1 spring, and the No. 1 spring and the telescopic rod cooperate with each other to buffer the force generated during the transportation of the lithium battery pack and protect the lithium battery pack from damage, a heat-insulating protection box is installed on one side of the telescopic rod, a heat-insulating protection box sealing cover is installed on the upper end of the heat-insulating protection box, a bolt is installed on the upper end of the heat-insulating protection box sealing cover through a thread, and the heat-insulating box sealing cover is fixed to the heat-insulating protection box by the bolt, and the heat-insulating protection box is fixed inside A battery fixing plate is connected, a cylindrical groove is provided inside the battery fixing plate, a support frame corresponding to the cylindrical groove is fixedly connected to the top of the battery fixing plate, a No. 1 slide groove is provided inside the support frame, a limit plate is rotatably connected to the top of the support frame, a limit groove is provided inside the limit plate, a limit rod is slidably connected to the inside of the limit groove, a slider that cooperates with the No. 1 slide groove is fixedly connected to the bottom of the limit rod, one end of the slider is fixedly connected to a battery fastening plate, the limit plate is rotated, the limit groove squeezes the limit rod, and the limit rod drives the slider to slide in the No. 1 slide groove, pushing the battery fastening plate to retract, thereby fixing the battery.

[0007] As a further solution of the utility model: a battery sealing cover is rotatably connected to the top of the limit plate, and a threaded rod is rotatably connected to the inside of the battery sealing cover through a thread, one end of the threaded rod is fixedly connected to a knob, and the other end of the threaded rod is fixedly connected to an upper support pad, and the height of the upper support pad can be adjusted by turning the knob.

[0008] As a further solution of the utility model: a No. 2 spring is fixedly connected to the bottom of the cylindrical groove, and a lower support pad corresponding to the upper support pad is fixedly connected above the No. 2 spring.

[0009] As a further solution of the utility model: a No. 1 fixing block is rotatably connected to the upper side of the limit plate. After the battery sealing cover is covered, the No. 1 fixing block can be rotated to fix the battery sealing cover on the limit plate.

[0010] As a further solution of the utility model: a fixing groove is provided on one side of the limit plate, a No. 2 fixing block is fixedly connected to the top of the battery fixing plate, a No. 2 slide groove is provided inside the No. 2 fixing block, and a protrusion that cooperates with the fixing groove is slidably connected inside the No. 2 slide groove. After fixing the battery, the protrusion is fixed in the fixing groove, which can fix the limit plate and prevent the battery from loosening, and a No. 3 spring is fixedly connected below the protrusion, and one side of the No. 3 spring is fixedly connected to the bottom of the No. 2 slide groove. The No. 3 spring can prevent the protrusion of the lithium battery pack from loosening during transportation.

[0011] As a further solution of the utility model: the limiting grooves are four groups, and the cross-section of the limiting grooves is arc-shaped. When the arc-shaped limiting grooves squeeze the limiting rods, the battery fastening plate is retracted inward, thereby fixing the battery.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. By setting a limit plate, a limit groove is set in the limit plate, a limit rod is slidably connected in the limit groove, a slider is fixedly connected below the limit rod, a battery fastening plate is fixedly connected to one side of the slider, a support plate is fixedly connected below the limit plate, a slide groove matching the slider is set in the support plate, and the limit plate is rotated. Through the force of rotation, the limit groove will squeeze the limit rod, so that the battery fastening plate shrinks inward, thereby fixing the battery. The spacing between the battery fastening plates can be adjusted according to different battery sizes;

[0014] 2. By setting a battery sealing cover, a threaded rod is connected to the inside of the battery sealing cover through a threaded rotation, one end of the threaded rod is fixedly connected to a knob, and the other end is fixedly connected to an upper support pad. After the battery is fixed by the battery fastening plate, the battery sealing cover is covered, and the knob is turned to adjust the distance between the upper support pad and the lower support pad. Batteries of different sizes can be installed according to different needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is an overall cross-sectional view of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the heat preservation protection box of the utility model;

[0018] Figure 4 This is a schematic diagram of the battery fixing structure of the utility model;

[0019] Figure 5 It is a side view of the battery fixing structure of the utility model;

[0020] Figure 6 It is a structural schematic diagram of the second fixing block and the protruding block of the utility model.

[0021] In the figure: 1. External protective shell; 2. Telescopic rod; 3. Spring No. 1; 4. Thermal insulation protection box; 5. Thermal insulation protection box sealing cover; 6. Bolt; 7. Battery fixing plate; 8. Cylindrical groove; 9. Support frame; 10. Limit plate; 11. Limit groove; 12. Limit rod; 13. Slider; 14. Battery fastening plate; 15. Fixed groove; 16. Battery sealing cover; 17. Threaded rod; 18. Knob; 19. Upper support pad; 20. Fixed block No. 1; 21. Fixed block No. 2; 22. Bump; 23. Slide No. 1; 24. Spring No. 2; 25. Lower support pad; 26. Spring No. 3; 27. Slide No. 2. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1 to Figure 6In the embodiment of the utility model, a low-temperature special lithium battery pack includes an external protective shell 1, a telescopic rod 2 is fixedly connected to one side of the internal part of the external protective shell 1, a No. 1 spring 3 is sleeved on the outer side of the telescopic rod 2, and the No. 1 spring 3 and the telescopic rod 2 cooperate with each other to buffer the force generated during the transportation of the lithium battery pack, so as to protect the lithium battery pack from damage, a heat preservation protection box 4 is installed on one side of the telescopic rod 2, a heat preservation protection box sealing cover 5 is installed on the upper end of the heat preservation protection box 4, a bolt 6 is installed on the upper end of the heat preservation protection box sealing cover 5 through a thread, and the heat preservation protection box sealing cover 5 is fixed to the heat preservation protection box 4 through the bolt 6, and a battery fixing plate 7 is fixedly connected to the internal part of the heat preservation protection box 4, and the battery fixing plate 7 A cylindrical groove 8 is provided inside, and a support frame 9 corresponding to the cylindrical groove 8 is fixedly connected above the battery fixing plate 7. A No. 1 slide groove 23 begins to be provided inside the support frame 9. A limit plate 10 is rotatably connected to the top of the support frame 9. A limit groove 11 is provided inside the limit plate 10. A limit rod 12 is slidably connected inside the limit groove 11. A slider 13 cooperating with the No. 1 slide groove 23 is fixedly connected to the bottom of the limit rod 12. A battery fastening plate 14 is fixedly connected to one end of the slider 13. The limit plate 10 is rotated, and the limit groove 11 squeezes the limit rod 12. The limit rod 12 drives the slider 13 to slide in the No. 1 slide groove 23, pushing the battery fastening plate 14 to retract, thereby fixing the battery.

[0024] In this embodiment: the limiting plate 10 is rotated, the limiting groove 11 squeezes the limiting rod 12, and the limiting rod 12 drives the slider 13 to slide in the first slide groove 23, pushing the battery fastening plate 14 to retract, thereby fixing the battery.

[0025] Please refer to Figure 2-4 A battery sealing cover 16 is rotatably connected to the top of the limit plate 10, and a threaded rod 17 is rotatably connected to the inside of the battery sealing cover 16 through a thread. A knob 18 is fixedly connected to one end of the threaded rod 17, and an upper support pad 19 is fixedly connected to the other end of the threaded rod 17. By rotating the knob 18, the height of the upper support pad 19 can be adjusted. A No. 2 spring 24 is fixedly connected to the bottom of the cylindrical groove 8, and a lower support pad 25 corresponding to the upper support pad 19 is fixedly connected to the top of the No. 2 spring 24.

[0026] In this embodiment, the height between the upper support pad 19 and the lower support pad 25 can be adjusted by rotating the knob 18 .

[0027] Please refer to Figure 4 A first fixing block 20 is rotatably connected to the upper side of the limiting plate 10 . After the battery sealing cover 16 is covered, the first fixing block 20 can be rotated to fix the battery sealing cover 16 on the limiting plate 10 .

[0028] In this embodiment, the battery sealing cover 16 can be fixed on the limiting plate 10 by rotating the first fixing block 20 .

[0029] Please refer to Figure 4-6 A fixing groove 15 is provided on one side of the limit plate 10, and a No. 2 fixing block 21 is fixedly connected to the top of the battery fixing plate 7. A No. 2 slide groove 27 is provided inside the No. 2 fixing block 21. A protrusion 22 that cooperates with the fixing groove 15 is slidably connected inside the No. 2 slide groove 27. After fixing the battery, the protrusion 22 is fixed in the fixing groove 15 to fix the limit plate 10 to prevent the battery from loosening. A No. 3 spring 26 is fixedly connected below the protrusion 22, and one side of the No. 3 spring 26 is fixedly connected to the bottom of the No. 2 slide groove 27. The No. 3 spring 26 can prevent the protrusion 22 from loosening during transportation of the lithium battery pack.

[0030] In this embodiment: after the battery is fixed, the protrusion 22 is fixed in the fixing groove 15, which can fix the limit plate 10 to prevent the battery from loosening. The No. 3 spring 26 can prevent the protrusion 22 from loosening during transportation of the lithium battery pack.

[0031] Please refer to Figure 4 There are four groups of limiting grooves 11, and the cross-section of the limiting grooves 11 is arc-shaped. When the arc-shaped limiting grooves 11 squeeze the limiting rods 12, the battery fastening plates 14 are retracted inward, thereby fixing the batteries.

[0032] In this embodiment, when the arc-shaped limiting groove 11 squeezes the limiting rod 12, the battery fastening plate 14 is retracted inward, thereby fixing the battery.

[0033] In the utility model, the working principle of the device is as follows:

[0034] When in use, first put the battery into the cylindrical groove 8 and rotate the limit plate 10. Through the force of rotation, the limit groove 11 will squeeze the limit rod 12 to tighten the battery fastening plate 14 inward, press the protrusion 22 to make the protrusion 22 cooperate with the fixing groove 15 to fix the limit plate 10, thereby fixing the battery. The spacing between the battery fastening plates 14 can be adjusted according to the size of the battery. Then, cover the battery sealing cover 16, turn the knob 18, adjust the spacing between the upper support pad 19 and the lower support pad 25, until the battery sealing cover 16 is completely immersed in the limit plate 10, rotate the No. 1 fixing block 20, and fix the battery sealing cover 16 on the limit plate 10. After installing the battery, fix the thermal insulation protection box sealing cover 5 above the thermal insulation protection box 4 by the bolt 6, and the thermal insulation protection box 4 and the thermal insulation protection box sealing cover 5 are used to insulate the battery.

[0035] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A low-temperature special lithium battery pack, comprising an outer protective shell (1), characterized in that: A telescopic rod (2) is fixedly connected to one side of the interior of the external protective shell (1), a No. 1 spring (3) is sleeved on the outer side of the telescopic rod (2), a heat preservation protection box (4) is installed on one side of the telescopic rod (2), a heat preservation protection box sealing cover (5) is installed on the upper end of the heat preservation protection box (4), a bolt (6) is installed on the upper end of the heat preservation protection box sealing cover (5) through a thread, a battery fixing plate (7) is fixedly connected to the interior of the heat preservation protection box (4), a cylindrical groove (8) is opened inside the battery fixing plate (7), and the battery fixing plate (7) is fixedly connected to the inner side of the battery fixing plate (7). ) is fixedly connected to the top of the battery pack (9) with a support frame (9) corresponding to the cylindrical groove (8) in a one-to-one manner, the support frame (9) has a first slide groove (23) inside, the support frame (9) is rotatably connected to a limit plate (10) above, the limit plate (10) has a limit groove (11) inside, the limit groove (11) is slidably connected to a limit rod (12) inside, the limit rod (12) is fixedly connected to a slider (13) that cooperates with the first slide groove (23) at the bottom, and one end of the slider (13) is fixedly connected to a battery fastening plate (14).

2. A low-temperature special lithium battery pack according to claim 1, characterized in that: A battery sealing cover (16) is rotatably connected to the upper portion of the limit plate (10), a threaded rod (17) is rotatably connected to the interior of the battery sealing cover (16) via a thread, one end of the threaded rod (17) is fixedly connected to a knob (18), and the other end of the threaded rod (17) is fixedly connected to an upper support pad (19).

3. A low-temperature special lithium battery pack according to claim 2, characterized in that: A No. 2 spring (24) is fixedly connected to the bottom of the cylindrical groove (8), and a lower support pad (25) corresponding to the upper support pad (19) is fixedly connected above the No. 2 spring (24).

4. A low-temperature special lithium battery pack according to claim 1, characterized in that: A first fixing block (20) is rotatably connected to the upper portion of the limiting plate (10).

5. A low temperature special lithium battery pack according to claim 1, characterized in that: A fixing groove (15) is provided on one side of the limit plate (10); a No. 2 fixing block (21) is fixedly connected to the top of the battery fixing plate (7); a No. 2 sliding groove (27) is provided inside the No. 2 fixing block (21); a protrusion (22) cooperating with the fixing groove (15) is slidably connected inside the No. 2 sliding groove (27); a No. 3 spring (26) is fixedly connected below the protrusion (22); and one side of the No. 3 spring (26) is fixedly connected to the bottom of the No. 2 sliding groove (27).

6. A low temperature special lithium battery pack according to claim 1, characterized in that: The limiting grooves (11) are four groups, and the cross-section of the limiting grooves (11) is arc-shaped.

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