A lithium battery high temperature protection structure and operation method thereof

Abstract

The present invention relates to the technical field of high temperature protection of lithium batteries. The present invention discloses a high temperature protection structure of a lithium battery and an operating method thereof, comprising a base, a shell being horizontally arranged directly above the base, a plurality of connectors being arranged between the shell and the base, a plurality of lithium batteries being equidistantly and horizontally arranged inside the shell, a cooling hose being fixedly arranged inside the shell, the cooling hose being bent and the area between adjacent lithium batteries and the side ends of the lithium batteries being in contact with the side ends of the cold zone hose, and a coolant flowing inside the cooling hose being arranged inside the cooling hose; the present invention realizes timely adjustment of the cooling efficiency of the lithium battery according to the driving speed of the vehicle through the mutual cooperation of the cooling hose, the first air inlet, the second air inlet, the accelerated cooling device, the closed door and the intermittent heat dissipation device, so as to cool and dissipate the lithium battery to the greatest extent, so as to improve the service life of the lithium battery.

Description

Technical Field

[0001] The present invention relates to the technical field of high temperature protection of lithium batteries, and in particular to a high temperature protection structure of a lithium battery and an operating method thereof. Background Art

[0002] Power batteries are power sources that provide power for tools, mostly referring to storage batteries that provide power for electric vehicles, electric trains, electric bicycles, and golf carts. Lithium iron batteries are a new type of green high-energy chemical power source that was launched by the American EverReady Company after 2000 and successfully marketed. They have shown very superior performance in electronic equipment and electric toys that require high-energy and high-power power sources. Above medium discharge current, the discharge time of lithium iron batteries can be about 6 times that of alkaline manganese batteries; and compared with nickel-metal hydride batteries, their discharge voltage is stable and their storage time has significant advantages. However, for lithium batteries used in electric vehicles, they usually need to have large-capacity storage characteristics, be able to discharge for a long time and charge frequently, in order to meet the long-term and frequent use of users;

[0003] Most electric vehicle power batteries use lithium iron phosphate, which has a room temperature cycle performance of more than 2,000 times. However, under changes in the outdoor environment and frequent use, the cycle attenuation of the lithium iron phosphate battery will be accelerated, thereby greatly reducing the battery life. Therefore, it is urgent to improve the high-temperature cycle life of the lithium iron phosphate battery. It is very necessary to dissipate heat and cool the lithium battery inside the moving vehicle. Traditional heat dissipation methods usually use air cooling or coolant cooling, but this cooling method is always constant, and the temperature of the lithium battery will gradually increase with the vehicle's speed. Therefore, when the vehicle speed reaches a certain level, the constant cooling method may not be able to meet the cooling needs of the lithium battery. A lithium battery high temperature protection device is needed to adjust the cooling efficiency of the lithium battery in time according to the vehicle's speed, so as to cool and dissipate heat for the lithium battery to the greatest extent, so as to increase the service life of the lithium battery. Summary of the invention

[0004] The object of the present invention is to provide a lithium battery high temperature protection structure and an operating method thereof, so as to solve the problems raised in the above-mentioned background technology. In order to achieve the above-mentioned object, the present invention provides the following technical solutions: including a base, the base is horizontally arranged on the ground, a shell is horizontally arranged directly above the base, a plurality of connecting parts are arranged between the shell and the base, a plurality of lithium batteries are equidistantly and horizontally arranged inside the shell, a cooling hose is fixedly arranged inside the shell, the cooling hose is bent and the area between adjacent lithium batteries and the side ends of the lithium batteries are in contact with the side ends of the cold zone hose, and a coolant flowing inside the cooling hose is arranged inside the cooling hose, a cooling machine is arranged on one side inside the shell, and one end of the cooling hose passes through the cooling end inside the cooling machine, and a first cooling hose is arranged on one side of the shell. An air inlet is provided, and the first air inlet is connected with the interior of the shell. The interiors on both sides of the shell to the interior of the opposite side of the shell where the first air inlet is provided are hollow. Second air inlets are symmetrically provided at both ends of the side of the shell where the first air inlet is provided, and the second air inlet is connected with the hollow part of the shell. An accelerated cooling device is provided on one side of the shell near the first air inlet, and the accelerated cooling device is connected with the first air inlet, and one end of the cooling hose passes through the accelerated cooling device and is connected with it. An opening is provided on the opposite side of the shell where the first air inlet is provided, and a closed door which flips upward and closes the opening is provided at the opening. Two intermittent heat dissipation devices are symmetrically provided in the hollow parts on both sides of the shell.

[0005] Preferably, the accelerated cooling device includes a control box, a rotating shaft, a first fan and an extrusion disk, the control box is arranged on a side of the shell body near the first air inlet, the side end of the control box is provided with an opening of the same size as the first air inlet and is communicated with the first air inlet, the rotating shaft is vertically and rotatably arranged in the middle of the control box, the middle part of the first fan passes through the rotating shaft to be connected thereto, and the first air inlet corresponds to the position of one side of the first fan, the middle part of the extrusion disk passes through the rotating shaft to be connected thereto, and the extrusion disk is located directly below the first fan, protrusions are symmetrically arranged on both sides of the extrusion disk, the side ends of the cooling hose respectively pass through the side ends of the control box and surround the outside of one side of the extrusion disk, and the protrusion on one side of the extrusion disk squeezes the side end of the cooling hose.

[0006] Preferably, a guide air outlet duct is provided on the side of the top of the control box away from the first air inlet, the guide air outlet duct is L-shaped and has through-type settings at both ends, the lower end of the guide air outlet duct is located inside the control box, and the upper end of the guide air outlet duct is located above the top of the shell and parallel to its top.

[0007] Preferably, the intermittent heat dissipation device includes a driving wheel, a rotating shaft, a second fan, a driving rod, a sliding wheel and a driving sleeve, wherein the rotating shaft is vertically and rotatably arranged inside a hollow area at the side end of the shell, the middle part of the second fan passes through the rotating shaft to be connected thereto, and the second air inlet corresponds to a side position of the second fan, the middle part of the driving wheel passes through the rotating shaft to be connected thereto, and the driving wheel is located directly below the second fan, the driving sleeve is horizontally arranged between the driving wheel and the closed door, the driving rod passes through the driving sleeve and is horizontally slidably connected thereto, one end of the driving rod is abutted against the side end of the closed door, and the other end of the driving rod is rotatably provided with a sliding wheel, the side end of the driving wheel is circular and evenly provided with a plurality of arc-shaped recessed portions, and the sliding wheel is in contact with one of the recessed portions at the side end of the driving wheel.

[0008] Preferably, a return spring is arranged between the side end of the driving rod and the end of the driving sleeve away from the driving wheel.

[0009] Preferably, it also includes an air intake baffle, which is arranged on a side end of the shell where the first air intake port is provided, and the air intake baffle is provided with openings corresponding to the first air intake port, the second air intake port, and the upper and lower positions of the shell.

[0010] Preferably, the side opening of the air inlet baffle is covered with a filter screen.

[0011] Preferably, the operating method of the lithium battery high temperature protection structure comprises the following steps:

[0012] S1: When the device is in use, the housing and the lithium battery are inside the chassis of the vehicle, the first air inlet and the second air inlet at the side end of the housing face the vehicle's air intake grille, and the lithium battery is sealed inside the housing. During the driving process of the vehicle, the airflow flowing into the vehicle cannot enter the housing and directly contact the lithium battery, so as to avoid impurities in the air from damaging the lithium battery.

[0013] S2: When the vehicle is driving, as the vehicle moves, the external air flows into the vehicle through the air intake grille, and the air flows on the upper and lower surfaces of the shell, thereby achieving the first layer of cooling of the shell and the lithium battery inside it. The faster the vehicle travels, the faster the air flows, and the higher the cooling efficiency.

[0014] S3: As the air flows inside the vehicle, a portion of the air enters the accelerated cooling device through the first air inlet, thereby driving the accelerated cooling device to work, so that the coolant inside the cooling hose flows inside the cooling hose, thereby performing a second layer of cooling on the lithium battery. As the vehicle speed increases, the accelerated cooling device drives the coolant to flow faster and faster inside the cooling hose, thereby timely improving the heat dissipation efficiency in conjunction with the increase in the temperature of the lithium battery. The coolant inside the cooling hose is always cooled by the cooler during the flow process, thereby avoiding affecting the cooling effect of the coolant.

[0015] S4: As the vehicle travels, part of the air enters the hollow area at the side end of the shell through the second air inlet, thereby triggering the intermittent heat dissipation device to work, thereby intermittently triggering the closed door to flip, so that the opening at the side end of the shell is briefly opened and closed, and then opened again, thereby discharging the hot air inside the shell to achieve the third level of heat dissipation for the lithium battery, and as the vehicle speeds up, the frequency of opening the closed door also increases, thereby improving the cooling and heat dissipation efficiency of the lithium battery.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] In the present invention, when the air flows into the control box through the first air inlet when the vehicle is running, the first fan starts to rotate in one direction as the air flows, thereby driving the extrusion disk to rotate. During the rotation of the extrusion disk, the cooling hose is alternately squeezed by the protrusions on both sides of the extrusion disk, thereby controlling the flow of coolant in the cooling hose, thereby taking away the heat from the surface of the lithium battery through the flow of coolant, and then cooling the coolant through the cooling machine, thereby achieving the effect of cooling and dissipating heat for the lithium battery. As the speed of the vehicle increases, the rotation speed of the first fan increases accordingly, thereby controlling the flow speed of the coolant in the cooling hose to increase accordingly, thereby cooperating with the temperature rise of the lithium battery to improve the cooling efficiency of the coolant on the lithium battery, thereby improving the service life of the lithium battery.

[0018] In the present invention, after air enters the hollow area at the side end of the shell through the second air inlet and begins to flow, the flow of air drives the second fan to rotate in one direction, thereby driving the driving wheel to rotate, so that the sliding wheel slides in turn in multiple recessed parts at the side end of the driving wheel, and with the cooperation of the return spring, the driving rod slides back and forth in the horizontal direction inside the driving sleeve, thereby controlling the end of the driving rod to intermittently contact the side end of the closed door and push the closed door to flip to the outside of the shell, so that the opening of the side end of the shell is briefly opened and closed, and then opened again, thereby discharging the hot air inside the shell to achieve heat dissipation of the lithium battery, and as the vehicle speed increases, the frequency of opening the closed door also increases, thereby improving the cooling and heat dissipation efficiency of the lithium battery.

[0019] In the present invention, an air intake baffle is provided on the side end of the shell, and openings corresponding to the first air inlet, the second air inlet, and the upper and lower positions of the shell are provided on the air intake baffle, so that after the external air enters the interior of the vehicle, the air flowing into the first air inlet, the second air inlet, and the upper and lower parts of the shell are more concentrated, thereby increasing the amount of air entering the first air inlet, the second air inlet, and the upper and lower parts of the shell, thereby further improving the cooling and heat dissipation efficiency of the lithium battery; by covering the opening of the air intake baffle with a filter net, impurities in the air flowing into the interior of the vehicle are filtered out, so that the air in contact with the shell and various components is purer to avoid damage to various components. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the local structure of the present invention Figure 1 ;

[0022] Figure 3 The local structure of the present invention is cut away Figure 1 ;

[0023] Figure 4 It is a schematic diagram of the local structure of the present invention Figure 2 ;

[0024] Figure 5 It is a partial structural schematic diagram of the accelerated cooling device in the present invention;

[0025] Figure 6 It is a three-dimensional structural schematic diagram of the air intake baffle and the filter screen in the present invention;

[0026] Figure 7 The local structure of the present invention is cut away Figure 2 ;

[0027] Figure 8 It is a schematic diagram of the three-dimensional structure of the closed door and the intermittent heat dissipation device in the present invention;

[0028] Fig. 9 It is a partial top view of the intermittent heat dissipation device in the present invention.

[0029] In the figure: 1. base; 2. shell; 3. lithium battery; 4. cooling hose; 5. cooler; 6. first air inlet; 7. second air inlet; 8. accelerated cooling device; 81. control box; 82. rotating shaft; 83. first fan; 84. extrusion plate; 9. guide air outlet duct; 10. closed door; 11. intermittent heat dissipation device; 111. driving wheel; 112. rotating shaft; 113. second fan; 114. driving rod; 115. sliding wheel; 116. driving sleeve; 117. reset spring; 12. air intake baffle; 13. filter. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figures 1 to 9 The present invention provides a technical solution: comprising a base 1, the base 1 is horizontally arranged on the ground, a shell 2 is horizontally arranged directly above the base 1, a plurality of connectors are arranged between the shell 2 and the base 1, a plurality of lithium batteries 3 are equidistantly and horizontally arranged inside the shell 2, a cooling hose 4 is fixedly arranged inside the shell 2, the cooling hose 4 is bent, and the area between adjacent lithium batteries 3 and the side ends of the lithium batteries 3 are in contact with the side ends of the cold zone hose, and a coolant flowing inside the cooling hose 4 is arranged inside the cooling hose 4, a cooling machine 5 is arranged on one side inside the shell 2, and one end of the cooling hose 4 passes through the cooling end inside the cooling machine 5, a first air inlet 6 is arranged on one side of the shell 2 and The first air inlet 6 is communicated with the interior of the shell 2, and the interior of the two sides of the shell 2 to the interior of the opposite side of the shell 2 where the first air inlet 6 is provided is hollow, and the two ends of the side of the shell 2 where the first air inlet 6 is provided are symmetrically provided with second air inlets 7, and the second air inlet 7 is communicated with the hollow part of the shell 2, and an accelerated cooling device 8 is provided on the side of the shell 2 close to the first air inlet 6, and the accelerated cooling device 8 is communicated with the first air inlet 6, and one end of the cooling hose 4 passes through the accelerated cooling device 8 and is connected with it, an opening is provided on the opposite side of the shell 2 where the first air inlet 6 is provided, and a closed door 10 that flips upward and closes the opening is provided at the opening, and two intermittent heat dissipation devices 11 are symmetrically provided in the hollow parts on both sides of the shell 2;

[0032] In this embodiment, Figures 3 to 5As shown, the accelerated cooling device 8 includes a control box 81, a rotating shaft 82, a first fan 83 and an extrusion disk 84, wherein the control box 81 is arranged on a side of the housing 2 near the first air inlet 6, and a side end of the control box 81 is provided with an opening of the same size as the first air inlet 6 and is communicated with the first air inlet 6, the rotating shaft 82 is vertically and rotatably arranged in the middle of the control box 81, the middle of the first fan 83 passes through the rotating shaft 82 to be connected thereto, and the first air inlet 6 corresponds to one side of the first fan 83, the middle of the extrusion disk 84 passes through the rotating shaft 82 to be connected thereto, and the extrusion disk 84 is located directly below the first fan 83, and protrusions are symmetrically arranged on both sides of the extrusion disk 84, and the side ends of the cooling hose 4 respectively pass through the side ends of the control box 81 on both sides and surround the outside of one side of the extrusion disk 84, and the protrusion on one side of the extrusion disk 84 squeezes the side end of the cooling hose 4;

[0033] When the vehicle is running, air flows into the control box 81 through the first air inlet 6, and the flow of air drives the first fan 83 to start rotating in one direction, thereby driving the extrusion disk 84 to rotate. During the rotation of the extrusion disk 84, the cooling hose 4 is alternately squeezed by the protrusions on both sides of the extrusion disk 84, thereby controlling the flow of coolant in the cooling hose 4, so that the heat on the surface of the lithium battery 3 is taken away by the flow of coolant, and then the coolant is cooled by the cooling machine 5, thereby achieving the effect of cooling and dissipating the heat of the lithium battery 3. As the speed of the vehicle increases, the rotation speed of the first fan 83 increases accordingly, thereby controlling the flow speed of the coolant in the cooling hose 4 to increase accordingly, thereby cooperating with the temperature rise of the lithium battery 3 to improve the cooling efficiency of the coolant on the lithium battery 3, thereby improving the service life of the lithium battery 3.

[0034] In this embodiment, Figure 2 and Figure 4 As shown, a guide air outlet pipe 9 is provided on the side of the top of the control box 81 away from the first air inlet 6. The guide air outlet pipe 9 is L-shaped and has two ends that are through-set. The lower end of the guide air outlet pipe 9 is located inside the control box 81, and the upper end of the guide air outlet pipe 9 is located above the top of the housing 2 and parallel to the top thereof.

[0035] The air that flows into the control box 81 and drives the first fan 83 to rotate is discharged to the outside of the control box 81 through the guide air outlet duct 9, and the wind force of the guide air outlet duct 9 guides the air to move along the upper surface of the shell 2, thereby achieving a heat dissipation effect on the upper surface of the shell 2.

[0036] In this embodiment, Figures 7 to 9As shown, the intermittent heat dissipation device 11 includes a driving wheel 111, a rotating shaft 112, a second fan 113, a driving rod 114, a sliding wheel 115 and a driving sleeve 116. The rotating shaft 112 is vertically and rotatably arranged inside the hollow area at the side end of the housing 2. The middle part of the second fan 113 passes through the rotating shaft 112 and is connected thereto, and the second air inlet 7 corresponds to a side position of the second fan 113. The middle part of the driving wheel 111 passes through the rotating shaft 112 and is connected thereto, and the driving wheel 111 is located Directly below the second fan 113, the driving sleeve 116 is horizontally arranged between the driving wheel 111 and the closed door 10, the driving rod 114 passes through the driving sleeve 116 and is slidably connected with the driving sleeve 116 in the horizontal direction, one end of the driving rod 114 is stopped at the side end of the closed door 10, and the other end of the driving rod 114 is rotatably provided with a sliding wheel 115, the side end of the driving wheel 111 is circular and evenly provided with a plurality of arc-shaped recessed parts, and the sliding wheel 115 is in contact with one of the recessed parts at the side end of the driving wheel 111;

[0037] A return spring 117 is provided between the side end of the driving rod 114 and the end of the driving sleeve 116 away from the driving wheel 111;

[0038] When the air enters the hollow area at the side end of the shell 2 through the second air inlet 7 and starts to flow, the second fan 113 is driven to rotate in one direction as the air flows, thereby driving the driving wheel 111 to rotate, so that the sliding wheel 115 slides in turn in multiple recessed parts at the side end of the driving wheel 111, and with the cooperation of the return spring 117, the driving rod 114 slides back and forth in the horizontal direction inside the driving sleeve 116, thereby controlling the end of the driving rod 114 to intermittently contact the side end of the closed door 10 and push the closed door 10 to flip toward the outside of the shell 2, so that the opening at the side end of the shell 2 is briefly opened and closed, and then opened again, thereby discharging the hot air inside the shell 2 to achieve heat dissipation of the lithium battery 3, and as the vehicle speed increases, the frequency of opening the closed door 10 also increases, thereby improving the cooling and heat dissipation efficiency of the lithium battery 3.

[0039] In this embodiment, Figure 6 As shown, it also includes an air intake baffle 12, which is arranged on the side end of the housing 2 where the first air intake port 6 is provided, and the air intake baffle 12 is provided with openings corresponding to the first air intake port 6, the second air intake port 7, and the upper and lower positions of the housing 2;

[0040] By setting an air intake baffle 12 at the side end of the shell 2, and providing openings on the air intake baffle 12 corresponding to the first air intake port 6, the second air intake port 7, and the upper and lower positions of the shell 2, after the external air enters the interior of the vehicle, the air flowing into the first air intake port 6, the second air intake port 7 and the upper and lower parts of the shell 2 is more concentrated, thereby increasing the amount of air entering the first air intake port 6, the second air intake port 7 and the upper and lower parts of the shell 2, thereby further improving the cooling and heat dissipation efficiency of the lithium battery 3.

[0041] In this embodiment, Figure 6 As shown, the side opening of the air inlet baffle 12 is covered with a filter 13;

[0042] By covering the filter 13 at the opening of the air intake baffle 12, impurities in the air flowing into the interior of the vehicle are filtered out, so that the air in contact with the housing 2 and various components is purer to avoid damage to various components.

[0043] The operation method and advantages of the present invention: The operation method of the lithium battery high temperature protection structure has the following working process:

[0044] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 As shown:

[0045] S1: When the device is in use, the housing 2 and the lithium battery 3 are located inside the chassis of the vehicle, the first air inlet 6 and the second air inlet 7 at the side ends of the housing 2 face the vehicle's air intake grille, and the lithium battery 3 is sealed inside the housing 2. During the driving process of the vehicle, the airflow flowing into the vehicle cannot enter the housing 2 and directly contact the lithium battery 3, so as to avoid impurities in the air from damaging the lithium battery 3;

[0046] S2: When the vehicle is driving, as the vehicle moves, the external air flows into the vehicle through the air intake grille, and the air flows on the upper and lower surfaces of the housing 2, thereby achieving the first layer of cooling of the housing 2 and the lithium battery 3 therein, and the faster the vehicle travels, the faster the air flows, and the higher the cooling efficiency;

[0047] S3: As the air flows inside the vehicle, a portion of the air enters the accelerated cooling device 8 through the first air inlet 6, thereby driving the accelerated cooling device 8 to work, so that the coolant inside the cooling hose 4 flows inside the cooling hose 4, thereby performing a second layer of cooling on the lithium battery 3. As the speed of the vehicle increases, the accelerated cooling device 8 drives the coolant to flow faster and faster inside the cooling hose 4, thereby timely improving the heat dissipation efficiency in conjunction with the temperature increase of the lithium battery 3. In addition, the coolant inside the cooling hose 4 is always cooled by the cooling machine 5 during the flow process, thereby avoiding affecting the cooling effect of the coolant.

[0048] S4: As the vehicle travels, a portion of the air enters the hollow area at the side end of the shell 2 through the second air inlet 7, thereby triggering the intermittent heat dissipation device 11 to work, thereby intermittently triggering the closed door 10 to flip, so that the opening at the side end of the shell 2 is briefly opened and closed, and then opened again, thereby discharging the hot air inside the shell 2 to achieve the third level of heat dissipation for the lithium battery 3, and as the vehicle speed increases, the frequency of opening the closed door 10 also increases, thereby improving the cooling and heat dissipation efficiency of the lithium battery 3.

[0049] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A lithium battery high temperature protection structure, characterized in that: The invention comprises a base (1), wherein the base (1) is horizontally arranged on the ground, a shell (2) is horizontally arranged directly above the base (1), a plurality of connecting members are arranged between the shell (2) and the base (1), a plurality of lithium batteries (3) are equidistantly and horizontally arranged inside the shell (2), a cooling hose (4) is fixedly arranged inside the shell (2), the cooling hose (4) is arranged in a curved manner, and the area between adjacent lithium batteries (3) and the side ends of the lithium batteries (3) are in contact with the side ends of the cold zone hose, and a coolant flowing inside the cooling hose (4) is arranged inside the cooling hose (4), a cooling machine (5) is arranged on one side inside the shell (2), and one end of the cooling hose (4) passes through the cooling end inside the cooling machine (5), and a first air inlet (6) is provided on one side of the shell (2), and the first air inlet (6) ) is communicated with the interior of the shell (2), the interior of both sides of the shell (2) to the interior of the opposite side of the shell (2) where the first air inlet (6) is provided is hollow, the second air inlet (7) is symmetrically arranged at both ends of the side of the shell (2) where the first air inlet (6) is provided, and the second air inlet (7) is communicated with the hollow part of the shell (2), an accelerated cooling device (8) is provided on the side of the shell (2) close to the first air inlet (6), and the accelerated cooling device (8) is communicated with the first air inlet (6), and one end of the cooling hose (4) passes through the accelerated cooling device (8) and is connected to it, an opening is provided on the opposite side of the shell (2) where the first air inlet (6) is provided, and a closed door (10) is provided at the opening which is turned upward and closes the opening, and two intermittent heat dissipation devices (11) are symmetrically arranged at the hollow parts of both sides of the shell (2); The accelerated cooling device (8) comprises a control box (81), a rotating shaft (82), a first fan (83) and an extrusion disk (84); the control box (81) is arranged on a side of the housing (2) near the first air inlet (6); a side end of the control box (81) is provided with an opening of the same size as the first air inlet (6) and is connected to the first air inlet (6); the rotating shaft (82) is vertically and rotatably arranged in the middle of the control box (81); the middle of the first fan (83) passes through the rotating shaft (82); ) is connected to it, and the first air inlet (6) corresponds to the position of one side of the first fan (83), the middle part of the extrusion disk (84) passes through the rotating shaft (82) and is connected to it, and the extrusion disk (84) is located directly below the first fan (83), and protrusions are symmetrically arranged on both sides of the extrusion disk (84), the side ends of the cooling hose (4) respectively pass through the side ends of the control box (81) and surround the outside of one side of the extrusion disk (84), and the protrusion on one side of the extrusion disk (84) squeezes the side end of the cooling hose (4).

2. A lithium battery high temperature protection structure according to claim 1, characterized in that: A guide air outlet pipe (9) is provided on a side of the top of the control box (81) away from the first air inlet (6); the guide air outlet pipe (9) is arranged in an L shape and has two ends that are through-connected; the lower end of the guide air outlet pipe (9) is located inside the control box (81); and the upper end of the guide air outlet pipe (9) is located above the top of the shell (2) and is parallel to the top thereof.

3. A lithium battery high temperature protection structure according to claim 2, characterized in that: The intermittent heat dissipation device (11) comprises a driving wheel (111), a rotating shaft (112), a second fan (113), a driving rod (114), a sliding wheel (115) and a driving sleeve (116); the rotating shaft (112) is vertically and rotatably arranged inside a hollow area at a side end of the housing (2); the middle of the second fan (113) passes through the rotating shaft (112) and is connected thereto; the second air inlet (7) corresponds to a position on one side of the second fan (113); the middle of the driving wheel (111) passes through the rotating shaft (112) and is connected thereto; and the driving wheel (111) is located at a position Directly below the second fan (113), the driving sleeve (116) is horizontally arranged between the driving wheel (111) and the closed door (10); the driving rod (114) passes through the driving sleeve (116) and is slidably connected to the driving sleeve (116) in a horizontal direction; one end of the driving rod (114) abuts against a side end of the closed door (10); the other end of the driving rod (114) is rotatably provided with a sliding wheel (115); the side end of the driving wheel (111) is circular and evenly provided with a plurality of arc-shaped recessed portions, and the sliding wheel (115) contacts one of the recessed portions on the side end of the driving wheel (111).

4. A lithium battery high temperature protection structure according to claim 3, characterized in that: A return spring (117) is provided between the side end of the driving rod (114) and an end of the driving sleeve (116) away from the driving wheel (111).

5. A lithium battery high temperature protection structure according to claim 4, characterized in that: It also includes an air intake baffle (12), the air intake baffle (12) being arranged at a side end of the shell (2) on which the first air intake port (6) is provided, and the air intake baffle (12) is provided with openings corresponding to the first air intake port (6), the second air intake port (7), and the upper and lower positions of the shell (2).

6. A lithium battery high temperature protection structure according to claim 5, characterized in that: The side opening of the air inlet baffle (12) is covered with a filter screen (13).

7. The operating method of a lithium battery high temperature protection structure according to claim 1, characterized in that: The steps include: S1: When the device is in use, the housing (2) and the lithium battery (3) are located inside the chassis of the vehicle, the first air inlet (6) and the second air inlet (7) at the side end of the housing (2) face the vehicle's air intake grille, and the lithium battery (3) is sealed inside the housing (2). During the vehicle's driving, airflow flowing into the vehicle cannot enter the housing (2) and directly contact the lithium battery (3), thereby preventing impurities in the air from damaging the lithium battery (3); S2: When the vehicle is traveling, as the vehicle moves, the external air flows into the vehicle through the air intake grille, and the air flows on the upper surface and the lower surface of the shell (2), thereby achieving the first layer of cooling of the shell (2) and the lithium battery (3) therein, and the faster the vehicle travels, the faster the air flows, and the higher the cooling efficiency; S3: As air flows inside the vehicle, a portion of the air enters the accelerated cooling device (8) through the first air inlet (6), thereby driving the accelerated cooling device (8) to work, causing the coolant inside the cooling hose (4) to flow inside the cooling hose (4), thereby performing a second layer of cooling on the lithium battery (3), and as the speed of the vehicle increases, the accelerated cooling device (8) drives the coolant to flow inside the cooling hose (4) faster and faster, thereby timely improving the heat dissipation efficiency in conjunction with the increase in the temperature of the lithium battery (3), and the coolant inside the cooling hose (4) is always cooled by the cooling machine (5) during the flow process, thereby avoiding affecting the cooling effect of the coolant; S4: As the vehicle travels, a portion of the air enters the hollow area at the side end of the shell (2) through the second air inlet (7), thereby triggering the intermittent heat dissipation device (11) to work, thereby intermittently triggering the closed door (10) to flip, so that the opening at the side end of the shell (2) is briefly opened and then closed, and then opened again, thereby discharging the hot air inside the shell (2) to achieve the third level of heat dissipation for the lithium battery (3), and as the speed of the vehicle increases, the frequency of opening the closed door (10) also increases, thereby improving the cooling and heat dissipation efficiency of the lithium battery (3).

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