Battery protection chip and battery protection board

Abstract

The invention discloses a battery protection chip and a battery protection board, and belongs to the field of new energy vehicle power batteries, the battery protection chip comprises a shell mechanism, a placement mechanism is mounted in the shell mechanism, and a battery mechanism is mounted in the placement mechanism; an inclined plane arranged at the top end of the inner wall of the limiting shell plays a role in guiding placement of a hollow protection plate, at the moment, the hollow protection plate does not need to be manually aligned, after the hollow protection plate is placed into the limiting shell, the top ends of multiple sets of threaded rods can be inserted into multiple sets of internal threaded rings at the same time, and at the moment, the multiple sets of internal threaded rings can rotate together by rotating a rotating disc; meanwhile, the rotating internal thread rings can move up and down on the outer wall of the threaded rod, when the internal thread rings move downwards, the hollow protection plate can be fixed, when the internal thread rings move upwards, the hollow protection plate can be disassembled, and due to the fact that the multiple sets of internal thread rings can rotate at the same time, manpower and time are reduced in the whole process, and the working efficiency is improved. And meanwhile, the mounting efficiency of the hollow protection plate is also improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power batteries for new energy vehicles, and in particular to a battery protection chip and a battery protection board. Background Art

[0002] New energy vehicle power batteries are storage batteries that provide power for electric vehicles, etc. Power batteries use chemical reactions to store and release electrical energy. Taking lithium-ion batteries as an example, they use the redox reaction of lithium ions between the positive and negative electrodes to store electrical energy. When charging, lithium ions are released from the positive electrode and move to the negative electrode through the electrolyte. At the same time, electrons flow from the positive electrode to the negative electrode through an external circuit to complete charging. When discharging, lithium ions are released from the negative electrode and return to the positive electrode through the electrolyte. At the same time, electrons flow from the negative electrode to the positive electrode through an external circuit to provide electrical energy for the vehicle's electric motor.

[0003] The electrification of automobiles has become the main direction of future automobile technology development. The battery systems of pure electric vehicles are generally installed at the bottom of the vehicle body and are mostly protected by spraying protective armor materials. The protection capability of the sprayed chassis armor is limited. After a serious collision, the battery system can only be repaired by replacing the box assembly, and the maintenance cost is very high. Based on these problems, Chinese patent CN212073649U discloses a power battery box protection mechanism, which enhances the anti-collision performance of the battery system by adding a detachable anti-collision guard plate to the bottom plate of the battery system. At the same time, the detachability of the anti-collision guard plate also greatly reduces the maintenance cost of the battery system.

[0004] During actual application, the device exposed a significant defect, namely, the inconvenience in positioning. This inconvenience caused the staff to have to manually move and align the battery protection plate when installing it on the outer casing. Moreover, in order to ensure that the bolts can be smoothly inserted into the screw groove and stop, the staff need to continuously support the protection plate until the entire process is completed. This process not only increases the manual support workload of the staff, but also makes it difficult to ensure the stability of the protection plate body. Since the protection plate is prone to offset, this is not conducive to ensuring the efficiency of bolt fixing, thereby reducing the practicality of the device. Summary of the Invention

[0005] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of this application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions should not be used to limit the scope of the present invention.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] A battery protection chip and a battery protection plate include a shell mechanism, a placement mechanism installed inside the shell mechanism, a battery mechanism installed in the placement mechanism, a buffer mechanism installed above the battery mechanism, a protection plate mechanism that does not require manual alignment installed above the buffer mechanism, an air outlet installed on one side of the outer wall of the battery mechanism, and an air inlet installed on the other side of the outer wall of the battery mechanism.

[0008] As a further description of the above technical solution:

[0009] The shell mechanism includes a hollow bottom plate, a limiting shell, a mounting plate, a mounting hole, a heat dissipation frame, a dust-proof ventilation net and a terminal. The outer wall of the hollow bottom plate is fixedly connected to the limiting shell. Both ends of the bottom of the limiting shell are fixedly connected to the mounting plate. Both ends of the mounting plate are provided with mounting holes that pass through from top to bottom.

[0010] As a further description of the above technical solution:

[0011] A heat dissipation frame is passed through the front and rear ends of the position-limiting housing. The inner walls of the heat dissipation frame are fixedly connected with a dustproof ventilation net. The heat dissipation frame is passed through multiple groups of terminal posts.

[0012] As a further description of the above technical solution:

[0013] The placement mechanism includes a placement plate, a placement groove and a rubber frame. The placement plate is fixedly connected to the top center of the hollow bottom plate. The placement plate is provided with a placement groove running through it from top to bottom. The top end of the inner wall of the placement groove is sleeved with a rubber frame.

[0014] As a further description of the above technical solution:

[0015] The protective plate mechanism includes a hollow protective plate, a handle, a swivel, an axis core, a turntable, a gear plate, an axis ring, an internally threaded ring, a gear ring, an externally threaded ring and a blocking cover. The top end of the inner wall of the limiting shell is sleeved with a hollow protective plate, and both ends of the top of the hollow protective plate are fixedly connected to handles. A swivel passes through the top center of the hollow protective plate, and the inner wall of the swivel is rotatably connected to the axis core. The top of the axis core is fixedly connected to the turntable, and the bottom of the axis core is fixedly connected to the gear plate.

[0016] As a further description of the above technical solution:

[0017] The top and bottom outer edges of the hollow protective plate are penetrated by shaft rings, the inner walls of the shaft rings are rotatably connected to internal threaded rings, the centers of the outer walls of the internal threaded rings are fixedly connected to gear rings, the teeth on the outer wall of the gear plate are engaged with the tooth grooves on the outer wall of the gear ring, the tops of the internal threaded rings are fixedly connected to external threaded rings, and the outer walls of the external threaded rings are threadedly connected to blocking covers.

[0018] As a further description of the above technical solution:

[0019] The buffer mechanism includes a spring cylinder, a sliding plate, a first buffer spring, a spring rod, a second buffer spring and a rubber pad. The bottom of the hollow protective plate is also fixedly connected to multiple groups of spring cylinders. The inner walls of the spring cylinders are slidably connected to the sliding plates. The tops of the sliding plates are fixedly connected to the first buffer springs. The bottom centers of the sliding plates are fixedly connected to spring rods. The top ends of the outer walls of the spring rods are sleeved with second buffer springs. The bottoms of the spring rods are fixedly connected to rubber pads.

[0020] As a further description of the above technical solution:

[0021] The battery mechanism includes a battery pack, a first wire, a protection chip body, a temperature detector, and a second wire. The battery pack is sleeved on the inner wall of the rubber frame. The front and rear ends of the battery pack are fixedly connected to multiple groups of first wires. The top ends of the first wires are movably connected to the interface at the end of the terminal. The top ends of the battery pack are fixedly connected to the protection chip body. The top of the protection chip body is fixedly connected to the temperature detector. The opposite sides of the two groups of temperature detectors are fixedly connected to the second wires.

[0022] As a further description of the above technical solution:

[0023] One end of the top of the hollow bottom plate is fixedly connected to a first placement frame, the air outlet fan is installed on the inner wall of the first placement frame, the other end of the top of the hollow bottom plate is fixedly connected to a second placement frame, the air inlet fan is installed on the inner wall of the second placement frame, the ends of the second wires are movably connected to the wiring ports on the outer walls of the air outlet fan and the air inlet fan, and multiple groups of threaded rods are fixedly connected to the outer edge of the top of the hollow bottom plate, and the top ends of the outer walls of the threaded rods are threadedly connected to the inner wall of the internal threaded ring.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] (1) The inclined surface provided at the top of the inner wall of the limiting shell guides the placement of the hollow protective plate. At this time, the hollow protective plate does not need to be manually aligned. After the hollow protective plate is placed inside the limiting shell, the tops of the multiple sets of threaded rods will be inserted into the interior of the multiple sets of internal threaded rings at the same time. At this time, the turntable is rotated to allow the multiple sets of internal threaded rings to rotate together. At the same time, the rotating internal threaded rings will move up and down on the outer wall of the threaded rod. When the internal threaded ring moves downward, the hollow protective plate can be fixed. When the internal threaded ring moves upward, the hollow protective plate can be disassembled. Since the multiple sets of internal threaded rings can rotate at the same time, the whole process not only reduces manpower and time, but also improves the installation efficiency of the hollow protective plate.

[0026] (2) By setting a connection structure between the external thread ring and the blocking cover, the hollow protective plate that has been fixed can be fixed again, thereby preventing the internal thread ring from loosening due to shaking of the hollow protective plate.

[0027] (3) When the temperature detector detects that the temperature inside the limit shell is too high and reaches a certain limit value, the air outlet and air inlet will automatically turn on. The air outlet will discharge the heat inside the limit shell from the heat dissipation frame, and the air inlet will draw the outside air from the heat dissipation frame into the limit shell, thereby accelerating the circulation speed of the gas inside and outside the limit shell, which helps to achieve a rapid cooling and heat dissipation effect.

[0028] (4) By setting up a rubber frame, the battery pack can be protected and a good buffering effect can be achieved. The first buffer spring can push the sliding plate downward, thereby pressing the rubber pad at the bottom of the spring rod tightly against the top surface of the battery pack. It can not only fix the battery pack, but also play a role in buffering and shock absorption when the battery pack shakes up and down. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the present invention;

[0030] Figure 2 Schematic diagram of the structure of the housing mechanism in the present invention;

[0031] Figure 3 It is a front view of the present invention;

[0032] Figure 4 It is a front cross-sectional view of the present invention;

[0033] Figure 5 It is a front cross-sectional view of the placement mechanism of the present invention;

[0034] Figure 6 It is a front cross-sectional view of the protection plate mechanism of the present invention;

[0035] Figure 7 It is a front cross-sectional view of the buffer mechanism of the present invention;

[0036] Figure 8 It is a front cross-sectional view of the battery mechanism in the present invention.

[0037] The corresponding relationship between the illustration labels and component names in the figure is as follows:

[0038] 1. Housing mechanism; 11. Hollow bottom plate; 12. Limit housing; 13. Mounting plate; 14. Mounting hole; 15. Heat dissipation frame; 16. Dustproof ventilation screen; 17. Terminals; 2. Placement mechanism; 21. Placement plate; 22. Placement slot; 23. Rubber frame; 3. Protective plate mechanism; 31. Hollow protective plate; 32. Handle; 33. Rotating ring; 34. Shaft core; 35. Turntable; 36. Gear plate; 37. Shaft ring; 38. Internal thread ring; 39. Gear Ring; 310, external thread ring; 311, blocking cover; 4, buffer mechanism; 41, spring tube; 42, sliding plate; 43, first buffer spring; 44, spring rod; 45, second buffer spring; 46, rubber pad; 5, battery mechanism; 51, battery pack; 52, first wire; 53, protection chip body; 54, temperature detector; 55, second wire; 6, first placement frame; 7, air outlet; 8, second placement frame; 9, air inlet; 10, threaded rod. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0040] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0041] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a single or selective embodiment that is mutually exclusive of other embodiments. The present invention provides the following embodiments.

[0042] Reference Figure 1-8, an embodiment provided by the present invention: a battery protection chip and a battery protection board, including a hollow bottom plate 11, a square cavity running through the top and bottom is opened in the hollow bottom plate 11, the outer wall of the hollow bottom plate 11 is fixedly connected to the limiting shell 12, the bottom surface of the hollow bottom plate 11 and the bottom surface of the limiting shell 12 are arranged on the same horizontal plane, the top of the inner wall of the limiting shell 12 is arranged into an inclined surface, which helps to improve the accurate placement and limiting effect of the limiting shell 12, and the two ends of the bottom of the limiting shell 12 are fixedly connected to the mounting plates 13, and the two ends of the mounting plates 13 are provided with mounting holes 14 running through the top and bottom. By setting the mounting plates 13 and the mounting holes 14, and using screws, the entire hollow bottom plate 11 and the limiting shell 12 can be fixed on At the designated position, the front and rear ends of the limiting shell 12 are penetrated by a heat dissipation frame 15. By setting the heat dissipation frame 15, it is helpful to discharge the heat inside the limiting shell 12 normally, and at the same time, it also makes the gas circulation inside and outside the limiting shell 12 smoother. The inner wall of the heat dissipation frame 15 is fixedly connected with a dustproof ventilation net 16. By setting the dustproof ventilation net 16, dust in the outside air can be intercepted. There are multiple groups of terminal posts 17 running through the heat dissipation frame 15. By setting the terminal posts 17, the battery inside the limiting shell 12 is conveniently connected to the external equipment. By setting the hollow bottom plate 11, the limiting shell 12, the mounting plate 13, the mounting hole 14, the heat dissipation frame 15, the dustproof ventilation net 16 and the terminal posts 17, the shell mechanism 1 can be formed.

[0043] A placement plate 21 is fixedly connected to the top center of the hollow bottom plate 11, and a placement groove 22 is provided in the placement plate 21 running through it from top to bottom. The internal space of the placement groove 22 is set to a structure that is wide at the top and narrow at the bottom, and the placement groove 22 is set directly above the square cavity in the hollow bottom plate 11. A rubber frame 23 is sleeved on the top of the inner wall of the placement groove 22, and the rubber frame 23 is only provided with an opening at the top. By setting a simple connection method between the rubber frame 23 and the placement groove 22, the disassembly and assembly steps of the rubber frame 23 are more convenient and quick, and it is also convenient for the staff to replace the damaged rubber frame 23. By setting the placement plate 21, the placement groove 22 and the rubber frame 23, a placement mechanism 2 can be formed.

[0044] The top of the inner wall of the limiting shell 12 is sleeved with a hollow protective plate 31, and a cavity is opened inside the hollow protective plate 31. The outer wall of the hollow protective plate 31 can slide up and down tightly against the inner wall of the limiting shell 12. The inclined surface set at the top of the inner wall of the limiting shell 12 plays a guiding role in the placement of the hollow protective plate 31. At this time, the hollow protective plate 31 does not need to be manually aligned. The top two ends of the hollow protective plate 31 are fixedly connected with handles 32. By setting the handles 32, it is convenient for staff to carry the entire hollow protective plate 31. The top center of the hollow protective plate 31 A circular hole is opened, and a rotating ring 33 is fixedly connected to the inside of the circular hole. The internal space of the rotating ring 33 is communicated with the internal space of the hollow cavity of the hollow protective plate 31. The inner wall of the rotating ring 33 is rotatably connected to the shaft core 34. The bottom end of the shaft core 34 extends vertically downward into the internal cavity of the hollow protective plate 31. The top of the shaft core 34 is fixedly connected to a turntable 35, and the bottom of the shaft core 34 is fixedly connected to a gear disk 36. The gear disk 36 is set in the internal cavity of the hollow protective plate 31. When the staff rotates the turntable 35, the gear disk 36 will also rotate together, and the hollow protective plate The top and bottom outer edges of 31 are penetrated by a shaft ring 37, the internal space of the shaft ring 37 is communicated with the internal space of the hollow cavity of the hollow protective plate 31, and the inner wall of the shaft ring 37 is rotatably connected to the internal thread ring 38. It is worth noting that the inner wall of the internal thread ring 38 is threaded, and the center of the outer wall of the internal thread ring 38 is fixedly connected to the gear ring 39. The gear teeth on the outer wall of the gear plate 36 are engaged with the tooth grooves on the outer wall of the gear ring 39. By setting the connection structure between the gear plate 36 and the gear ring 39, the gear plate 36 can drive the inner wall of multiple sets of gear rings 39. The internal threaded ring 38 rotates together. At this time, the rotation direction and speed of multiple groups of internal threaded rings 38 are the same. The tops of the internal threaded rings 38 are fixedly connected to the external threaded rings 310. It is worth noting that the outer walls of the external threaded rings 310 are threaded with threads, and the outer walls of the external threaded rings 310 are threadedly connected to the blocking covers 311. By arranging the hollow protective plate 31, the handle 32, the rotating ring 33, the shaft core 34, the turntable 35, the gear plate 36, the shaft ring 37, the internal threaded ring 38, the gear ring 39, the external threaded ring 310 and the blocking cover 311, a protective plate mechanism 3 can be formed.

[0045] The bottom of the hollow protective plate 31 is also fixedly connected to multiple groups of spring cylinders 41. The top and bottom of the spring cylinder 41 are provided with openings. The inner wall of the spring cylinder 41 is slidably connected to a sliding plate 42. The top of the sliding plate 42 is fixedly connected to a first buffer spring 43. The bottom center of the sliding plate 42 is fixedly connected to a spring rod 44. The bottom end of the outer wall of the spring rod 44 extends vertically downward from the opening at the bottom of the spring cylinder 41. The top end of the outer wall of the spring rod 44 is sleeved with a second buffer spring 45. The second buffer spring 45 is arranged inside the spring cylinder 41 and is located directly below the sliding plate 42. The bottom of the spring rod 44 is fixedly connected to a rubber pad 46. By arranging the spring cylinder 41, the sliding plate 42, the first buffer spring 43, the spring rod 44, the second buffer spring 45 and the rubber pad 46, a buffer mechanism 4 can be formed.

[0046] The inner wall of the rubber frame 23 is sleeved with a battery pack 51. By setting the rubber frame 23, the battery pack 51 can be protected and a good buffering effect can be achieved. The first buffer spring 43 can push the sliding plate 42 downward, thereby pressing the rubber pad 46 at the bottom of the spring rod 44 tightly against the top surface of the battery pack 51, which can not only fix the battery pack 51, but also play a role in buffering and shock absorption when the battery pack 51 shakes up and down. The front and rear ends of the battery pack 51 are fixedly connected to multiple groups of first wires 52, and the top ends of the first wires 52 are movably connected to the interface at the end of the terminal 17. By setting a connection structure between the first wire 52 and the terminal 17, the battery pack 51 is conveniently connected to the external equipment. The two ends of the top of the battery pack 51 are fixedly connected to the protection chip body 53, and the top of the protection chip body 53 is fixedly connected to the temperature detector 54. By setting the temperature detector 54, the temperature inside the limit shell 12 can be detected. The opposite sides of the two groups of temperature detectors 54 are fixedly connected to the second wire 55. By setting the battery pack 51, the first wire 52, the protection chip body 53, the temperature detector 54 and the second wire 55, a battery mechanism 5 can be formed.

[0047] One end of the top of the hollow bottom plate 11 is fixedly connected to a first placement frame 6, an inner wall of the first placement frame 6 is installed with an outlet fan 7, the other end of the top of the hollow bottom plate 11 is fixedly connected to a second placement frame 8, the first placement frame 6 and the second placement frame 8 are symmetrically installed on both sides of the outer wall of the battery mechanism 5, the inner wall of the second placement frame 8 is installed with an inlet fan 9, the ends of the second wires 55 are movably connected to the wiring ports of the outer walls of the outlet fan 7 and the inlet fan 9, and by setting the second wires 55, the outlet fan 7 and the inlet fan 9 can be connected. The blowers 9 are connected to the two sets of temperature detectors 54 respectively. When the temperature detectors 54 detect that the temperature inside the limit shell 12 is too high and reaches a certain limit value, the blower 7 and the blower 9 will automatically turn on. The blower 7 will discharge the heat inside the limit shell 12 from the heat dissipation frame 15, and the blower 9 will suck the outside air from the heat dissipation frame 15 into the limit shell 12, thereby accelerating the circulation speed of the gas inside and outside the limit shell 12, which is conducive to achieving a rapid cooling and heat dissipation effect. The top of the hollow bottom plate 11 The top ends of the outer wall of the screw rod 310 and the inner wall of the inner threaded ring 38 are screwed together, and the top ends of the screw rods 10 are screwed together with the inner wall of the inner threaded ring 38. After the hollow protective plate 31 is placed in the limiting shell 12, the top ends of the multiple sets of threaded rods 10 will be inserted into the multiple sets of internal threaded rings 38 at the same time. At this time, rotating the turntable 35 can allow the multiple sets of internal threaded rings 38 to rotate together. At the same time, the rotating internal threaded rings 38 will move up and down on the outer wall of the screw rod 10. When the internal threaded ring 38 moves downward, the hollow protective plate 31 can be fixed. When the internal threaded ring 38 moves upward, the hollow protective plate 31 can be removed. Since the multiple sets of internal threaded rings 38 can rotate at the same time, the whole process not only reduces manpower and time, but also improves the installation efficiency of the hollow protective plate 31. By setting the connection structure between the external threaded ring 310 and the blocking cover 311, the hollow protective plate 31 that has been fixed can be fixed again, thereby preventing the hollow protective plate 31 from loosening due to shaking of the internal threaded ring 38.

[0048] The above content is a further detailed description of the present invention in conjunction with specific implementation methods. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, they can make several simple deductions or substitutions without departing from the concept of the present invention, which should be regarded as falling within the scope of protection determined by the claims submitted for the present invention.

Claims

1. A battery protection chip and a battery protection board, comprising a housing structure (1), characterized in that: A placement mechanism (2) is installed inside the housing mechanism (1), a battery mechanism (5) is installed in the placement mechanism (2), a buffer mechanism (4) is installed above the battery mechanism (5), a protective plate mechanism (3) that does not require manual alignment is installed above the buffer mechanism (4), an air outlet fan (7) is installed on one side of the outer wall of the battery mechanism (5), and an air inlet fan (9) is installed on the other side of the outer wall of the battery mechanism (5).

2. The battery protection chip and battery protection board according to claim 1, characterized in that: The housing mechanism (1) comprises a hollow bottom plate (11), a position-limiting housing (12), a mounting plate (13), a mounting hole (14), a heat dissipation frame (15), a dust-proof ventilation net (16) and a terminal (17); the outer wall of the hollow bottom plate (11) is fixedly connected to the position-limiting housing (12); both ends of the bottom of the position-limiting housing (12) are fixedly connected to the mounting plate (13); and both ends of the mounting plate (13) are provided with a mounting hole (14) running through the top and bottom.

3. The battery protection chip and battery protection board according to claim 2, characterized in that: The front and rear ends of the position-limiting housing (12) are both penetrated by heat dissipation frames (15), the inner walls of the heat dissipation frames (15) are fixedly connected with dustproof ventilation nets (16), and the heat dissipation frames (15) are penetrated by multiple groups of terminal posts (17).

4. The battery protection chip and battery protection board according to claim 2, characterized in that: The placement mechanism (2) comprises a placement plate (21), a placement groove (22) and a rubber frame (23); the placement plate (21) is fixedly connected to the center of the top of the hollow bottom plate (11); the placement groove (22) is provided in the placement plate (21) and runs through the placement groove (22) from top to bottom; the rubber frame (23) is sleeved on the top of the inner wall of the placement groove (22).

5. The battery protection chip and battery protection board according to claim 4, characterized in that: The protective plate mechanism (3) comprises a hollow protective plate (31), a handle (32), a rotating ring (33), a shaft core (34), a rotating disk (35), a gear disk (36), a shaft ring (37), an internal thread ring (38), a gear ring (39), an external thread ring (310) and a blocking cover (311); the top end of the inner wall of the limiting housing (12) is sleeved with the hollow protective plate (31); both ends of the top of the hollow protective plate (31) are fixedly connected to the handle (32); the center of the top of the hollow protective plate (31) is penetrated by a rotating ring (33); the inner wall of the rotating ring (33) is rotatably connected to the shaft core (34); the top of the shaft core (34) is fixedly connected to the rotating disk (35); and the bottom of the shaft core (34) is fixedly connected to the gear disk (36).

6. The battery protection chip and battery protection board according to claim 5, characterized in that: The outer edges of the top and bottom of the hollow protective plate (31) are both penetrated by a shaft ring (37); the inner wall of the shaft ring (37) is rotatably connected to an internal thread ring (38); the center of the outer wall of the internal thread ring (38) is fixedly connected to a gear ring (39); the gear teeth on the outer wall of the gear plate (36) are meshed with the tooth grooves on the outer wall of the gear ring (39); the top of the internal thread ring (38) is fixedly connected to an external thread ring (310); and the outer wall of the external thread ring (310) is threadedly connected to a blocking cover (311).

7. The battery protection chip and battery protection board according to claim 5, characterized in that: The buffer mechanism (4) comprises a spring cylinder (41), a sliding disk (42), a first buffer spring (43), a spring rod (44), a second buffer spring (45) and a rubber pad (46); the bottom of the hollow protective plate (31) is also fixedly connected to multiple groups of spring cylinders (41); the inner wall of the spring cylinder (41) is slidably connected to the sliding disk (42); the top of the sliding disk (42) is fixedly connected to the first buffer spring (43); the bottom center of the sliding disk (42) is fixedly connected to the spring rod (44); the top of the outer wall of the spring rod (44) is sleeved with the second buffer spring (45); and the bottom of the spring rod (44) is fixedly connected to the rubber pad (46).

8. The battery protection chip and battery protection board according to claim 5, characterized in that: The battery mechanism (5) comprises a battery pack (51), a first wire (52), a protection chip body (53), a temperature detector (54) and a second wire (55); the battery pack (51) is sleeved on the inner wall of the rubber frame (23); the front end and the rear end of the battery pack (51) are fixedly connected to a plurality of groups of first wires (52); the top ends of the first wires (52) are movably connected to the interface at the end of the terminal (17); the top ends of the battery pack (51) are fixedly connected to the protection chip body (53); the top of the protection chip body (53) is fixedly connected to the temperature detector (54); and the opposite sides of the two groups of temperature detectors (54) are fixedly connected to the second wire (55).

9. The battery protection chip and battery protection board according to claim 8, characterized in that: One end of the top of the hollow bottom plate (11) is fixedly connected to a first placement frame (6), the air outlet fan (7) is installed on the inner wall of the first placement frame (6), the other end of the top of the hollow bottom plate (11) is fixedly connected to a second placement frame (8), the air inlet fan (9) is installed on the inner wall of the second placement frame (8), the ends of the second wire (55) are movably connected to the connection ports on the outer walls of the air outlet fan (7) and the air inlet fan (9), and multiple groups of threaded rods (10) are fixedly connected to the outer edge of the top of the hollow bottom plate (11), and the top ends of the outer walls of the threaded rods (10) are threadedly connected to the inner wall of the internal thread ring (38).

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