A self-cooling battery pack housing assembly for automobiles

Abstract

This invention discloses a self-cooling battery pack housing assembly for vehicles, comprising: a housing body composed of two identical shells; further comprising: a gasket and a movable air chamber, respectively fixedly installed on the left and right sides and the middle of the inner wall of the housing body, and a connecting horizontal pipe fixed in the middle of the outer wall of the housing body, the connecting horizontal pipe communicating with the interior of the movable air chamber; an air intake pipe, bolted to the chassis of the vehicle, with an air intake grille and a manifold installed on the front and top of the air intake pipe, respectively; and an exhaust pipe, integrally fixed to the outer wall of the housing body, with both ends connected to the connecting horizontal pipe and a reinforcing pipe, and an exhaust head fixed to the pipe end inside the reinforcing pipe. This self-cooling battery pack housing assembly for vehicles utilizes the air pressure and airflow during vehicle operation to achieve a low-pressure suction-type heat dissipation effect during battery use, rapidly cooling down the battery and preventing dust in the circulating gas from entering the area where the battery pack is located.

Description

Technical Field

[0001] This invention relates to the field of battery pack housing technology, specifically to a self-cooling battery pack housing assembly for vehicles. Background Technology

[0002] The battery pack housing assembly is an accessory that provides built-in isolation protection and installation positioning for the battery components. Depending on the application scenario and the functional differences of the battery pack, the types and sizes of battery pack housings vary greatly. The assembly is generally reinforced by bolt positioning, which provides a wrap-around protection for the battery pack body and effectively prevents deformation and damage to the battery pack body caused by external vibration and collision during use.

[0003] The use of the battery pack casing achieves internal isolation and effectively protects the battery. However, while providing protection, the casing also makes the battery pack compact and dense when installed, and the external environment is directly separated by the casing. This causes the heat generated by the battery pack during use to be directly concentrated in the internal environment of the casing, which can easily lead to heat loss of the battery pack during continuous operation. Therefore, it is necessary to carry out heat dissipation treatment for the battery pack during continuous operation and install supporting equipment to remove the by-product heat energy in the working environment of the battery pack.

[0004] However, existing battery pack cooling mechanisms generally use direct current gas cooling, which involves directly introducing external gas to dissipate the heat stored in the working environment of the battery pack. However, introducing external gas also brings in a large amount of dust and particulate impurities, which can affect the stable use of the battery pack in the long run. In addition, in actual use, automotive battery pack cooling mostly relies on compressor cooling to achieve auxiliary cooling of the battery pack, which consumes a lot of energy and is not conducive to energy conservation in vehicles. Furthermore, the cooling efficiency is insufficient. While it can quickly cool down the surface temperature of the battery pack, it is not efficient at dissipating heat from the internal gaps within the battery pack.

[0005] To address the aforementioned issues, there is an urgent need for innovative design based on the existing automotive battery pack housing assembly. Summary of the Invention

[0006] The purpose of this invention is to provide a self-cooling battery pack housing assembly for vehicles, in order to solve the problems mentioned above in the background art. Existing vehicle battery pack housing assemblies utilize direct gas flow and compression refrigeration to achieve cooling of the battery pack during use, but the heat dissipation efficiency is poor, and external dust and particulate impurities easily accumulate in the working area of ​​the battery pack, affecting its normal use.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a self-cooling battery pack housing assembly for vehicles, comprising:

[0008] The outer shell body consists of two shells with the same structure, and anti-collision corner strips are fixed at the outer corners of the outer shell body, and reinforcing tubes are bolted between the outer walls of the anti-collision corner strips;

[0009] Also includes:

[0010] The pad and the movable air chamber are fixedly installed on the left and right sides and the middle of the inner wall of the outer shell body, respectively. A connecting horizontal pipe is also fixed in the middle of the outer wall of the outer shell body, and the connecting horizontal pipe communicates with the interior of the movable air chamber.

[0011] The intake pipe is bolted to the chassis of the car, and an intake grille and a manifold are installed on the front and top of the intake pipe respectively. The top of the left and right sides of the manifold are fixed with air supply ports, which are connected to the lower end of the air guide pipe. The air guide pipe is also connected to the hollow interior of the anti-collision corner guard strip.

[0012] The exhaust pipe is fixed to the outer wall of the outer shell body, and its two ends are respectively connected to the connecting horizontal pipe and the reinforcing pipe. An exhaust head is fixed to the pipe end located inside the reinforcing pipe.

[0013] By adopting the above technical solution, the wind energy generated by the car's movement is used to create a negative pressure effect for gas circulation, thereby expelling the heat energy in the working environment area where the battery pack is located.

[0014] Preferably, the active air chamber is configured as a triangular strip structure, and the active air chamber is composed of an outer edge frame and a middle soft membrane layer. The outer edge frame is located at the ridge position of the triangular strip structure, and the gap of the outer edge frame is filled with the middle soft membrane layer. Moreover, the middle soft membrane layer has air holes at equal intervals to facilitate the flow and interaction of gas.

[0015] By adopting the above technical solution, the active air cavity achieves the interaction of gases inside and outside the outer shell, which facilitates the cooling and heat dissipation of the battery pack.

[0016] Preferably, an adjusting screw is threaded through the connecting horizontal tube, and the lower end of the adjusting screw is rotatably connected to the inner wall of the bottom edge outer frame to realize the folding and unfolding control of the movable air chamber.

[0017] The above technical solution facilitates the control of the size of the movable air chamber, allowing for compression and volume changes, which in turn facilitates the assembly of the battery pack and the expansion of the movable air chamber.

[0018] Preferably, the upper and lower corners of the back side of the air intake pipe are both set as cylindrical structures, and exhaust holes are also provided on the cylindrical structures. The inner walls of the air intake pipes between the upper and lower cylindrical structures are set as protruding triangular structures, so that the gas introduced into the air intake pipes swirls at the position of the cylindrical structures, separating particulate impurities in the gas.

[0019] By adopting the above technical solution, the intake pipe can be connected to flowing gas when the vehicle is in motion, and the gas can circulate and flow, so that the centrifugal circulation and the difference in mass of impurities can separate particulate impurities and most of the dust in the gas.

[0020] Preferably, the manifold is internally connected to both the inlet pipe and the gas delivery port, and the inner wall of the connection between the inlet pipe and the manifold is provided with a baffle to ensure that the gas is stably introduced into the manifold from the inlet pipe.

[0021] By adopting the above technical solution, when the gas is introduced into the inlet pipe and impurities are separated, it can be separated again at the junction of the gas and the manifold. Because the gas is lightweight, the gas introduced into the manifold is cleaner.

[0022] Preferably, the gas supply port is configured as an inverted funnel-shaped structure, and the gas supply port is configured in a one-to-one correspondence with the gas guide tube, and the middle section of the gas guide tube is composed of a flexible and stretchable hose.

[0023] The above technical solution improves the gas flow guiding effect at the gas transmission port.

[0024] Preferably, the reinforcing tube is hollow and L-shaped, and the reinforcing tube and the exhaust head are coaxial with their axes overlapping. The exhaust head is corner-shaped with a corner angle of 120° and both its front and rear sides are open and through. The gas inside the reinforcing tube is discharged under negative pressure through the exhaust head.

[0025] By adopting the above technical solution and utilizing the "Venturi" principle, a low-pressure effect is created when the gas flows, so as to achieve airflow in the exhaust pipe and discharge heat energy.

[0026] Preferably, a pusher fan blade is rotatably installed inside the reinforcing pipe at the front end of the exhaust head, the upper end of the central shaft of the pusher fan blade is located inside the reinforcing pipe, and a gear shaft is rotatably installed inside the reinforcing pipe near the center, and a transmission chain belt is connected between the gear shaft and the central shaft of the pusher fan blade.

[0027] An exhaust fan is also embedded in the connecting horizontal pipe below the middle of the reinforced pipe. The upper end of the central shaft of the exhaust fan is located in the middle of the inside of the reinforced pipe and is fitted with a rotating gear. The rotating gear meshes with the gear shaft to realize the upward discharge of hot air in the connecting horizontal pipe and the movable air chamber.

[0028] By adopting the above technical solution, when the gas flows in the exhaust pipe, it can achieve the driving effect of the exhaust fan under the action of the fluid, and discharge heat energy.

[0029] Preferably, it also includes a drive component below the exhaust fan;

[0030] The drive component includes a motor body embedded in the connecting horizontal tube and the movable air chamber. A transmission head is also slidably mounted on the outer wall of the output shaft of the motor body. The outer wall of the lower end of the central shaft of the exhaust fan is set as a regular hexagonal structure. The top of the transmission head is recessed. A clamping block is rotatably mounted at an equal angle on the inner wall of the top recess of the transmission head. The clamping block is circular and has a slot. An elastic damping rubber block is installed between the outer wall of the clamping block and the inner wall of the transmission head.

[0031] The drive component also includes telescopic rods on the left and right sides of the motor body. The telescopic rods are filled with thermal expansion and contraction oil. An adjustment frame is fixed between the upper ends of the telescopic rods. An elastic element is installed between the adjustment frame and the outer wall of the telescopic rod. The middle part of the adjustment frame and the outer wall of the transmission head form a through-type relative rotation structure.

[0032] By adopting the above technical solution, when the ambient temperature of the battery pack is too high, the heat energy in the environment can be quickly and efficiently dissipated, thus avoiding heat loss due to excessive temperature in the area where the battery pack is located.

[0033] Preferably, the transmission head is vertically coaxial with the output shaft of the motor body, and the cross-section of the upper outer wall of the output shaft of the motor body is set as a rectangular structure, and the bottom of the transmission head is set as a cylindrical shape, and its cylindrical inner wall and the outer wall of the output shaft of the motor body form a lifting sliding connection with radial engagement and axial contact.

[0034] The telescopic rod is located between the connecting horizontal pipe and the movable air chamber. The outer wall of the telescopic rod is made of heat-conducting material, and a pressure control switch for the motor body is installed at the telescopic shaft end of the telescopic rod to realize the start and stop control of the motor body.

[0035] By adopting the above technical solution, the thermal expansion and contraction effect of liquids can be utilized more efficiently to quickly dissipate heat when the temperature of battery pack byproducts is too high.

[0036] Compared with the prior art, the beneficial effects of the present invention are: the self-cooling battery pack housing assembly for vehicles utilizes the air pressure and airflow during vehicle operation to achieve a low-pressure suction-type heat dissipation effect during battery use, rapidly cooling down the battery and preventing dust in the circulating gas from entering the area where the battery pack is located. The specific method is as follows:

[0037] 1. By simply using the intake pipe, the airflow generated by the vehicle's movement is passively and rapidly introduced. The airflow flows into the intake pipe and swirls within the circular cavity at the corner of the intake pipe. Due to the high-speed swirling of the gas, dust and particulate impurities that are relatively large compared to air are driven by centrifugal force and flow along the inner wall of the circular cavity of the intake pipe, and are discharged from the exhaust hole on the intake pipe. The lighter gas after impurity separation is guided to the junction of the manifold and the intake pipe. Under the action of the baffle on the inner wall of the intake pipe, the dust is separated again by swirling. This makes the gas introduced into the reinforced pipe through the gas inlet and the pipe cleaner, while the gas forms a rapid axial flow within the reinforced pipe.

[0038] 2. By directly applying the reinforcement pipe and its internal exhaust pipe and exhaust head, the gas flow in the reinforcement pipe forms an oblique impact at the connection between the exhaust pipe and the exhaust head. The gas flows in the exhaust head and increases the airflow velocity at its cross-section, creating a low-pressure effect at the end of the exhaust pipe. The low-pressure effect at the end of the exhaust pipe, along with the side effect of heat generation during battery pack use causing gas expansion in its environment, will cause the heat energy in the battery pack to be discharged through the active air chamber and the connecting horizontal pipe and exhaust pipe. This will continuously and uniformly discharge the heat energy in the area where the battery pack is located, achieving a cooling effect. At the same time, it will not directly accelerate the introduction of external gas into the working environment area of ​​the battery pack for heat dissipation. This will prevent dust from accumulating and affecting the normal use function of the battery pack during cooling.

[0039] 3. Under the low-pressure effect of the aforementioned gas flow, heat energy is discharged using the "Venturi" principle. At the same time, the airflow can also drive the fan blades to rotate continuously. The external force driving the fan blades to rotate drives the exhaust fan to work, forming airflow to achieve the self-cooling effect of the battery. However, when the battery generates too much heat and the above technologies cannot stably and continuously cool it down to the threshold for good battery use, the high temperature effect will simultaneously utilize the thermal expansion and contraction effect of the liquid to achieve the extension and retraction of the telescopic rod. By extending and retracting the rod, the positioning height of the transmission head and the operating state of the motor body are changed. Under the high temperature effect, the motor synchronously drives the exhaust fan to work, stably and quickly cooling and dissipating heat from the battery pack. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the front structure of the present invention;

[0041] Figure 2 This is a schematic diagram of the outer shell structure of the present invention;

[0042] Figure 3 This is a schematic diagram of the active air cavity structure of the present invention;

[0043] Figure 4This is a three-dimensional structural diagram of the intake pipe component of the present invention.

[0044] Figure 5 This is a side sectional view of the intake pipe of the present invention;

[0045] Figure 6 This is a schematic diagram of the rear structure of the present invention;

[0046] Figure 7 This is a schematic diagram of the installation and distribution structure of the exhaust pipe and exhaust head of the present invention;

[0047] Figure 8 This is a schematic diagram of the exhaust head and anti-collision corner guards of the present invention;

[0048] Figure 9 This is a schematic diagram of the internal structure of the reinforced pipe of the present invention;

[0049] Figure 10 This is a schematic diagram of the motor body installation and positioning of the present invention;

[0050] Figure 11 This is a schematic diagram of the installation structure of the transmission head of the present invention.

[0051] In the diagram: 1. Outer shell; 2. Anti-collision corner guards; 3. Reinforcing tube; 4. Pad strip; 5. Movable air chamber; 501. Edge frame; 502. Middle soft membrane layer; 6. Connecting horizontal tube; 7. Adjusting screw; 8. Air inlet pipe; 801. Waste discharge hole; 9. Air inlet grille; 10. Combustion pipe; 11. Air supply port; 12. Air guide pipe; 13. Exhaust pipe; 14. Exhaust head; 15. Drive fan blade; 16. Gear shaft; 17. Transmission chain; 18. Exhaust fan; 19. Rotating gear; 20. Motor body; 21. Transmission head; 22. Clamping block; 23. Telescopic rod; 24. Height adjustment frame. Detailed Implementation

[0052] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0053] Please see Figures 1-8 This invention provides a technical solution: a self-cooling battery pack housing assembly for vehicles, comprising:

[0054] The outer shell body 1 is composed of two shells with the same structure. Anti-collision corner guards 2 are fixed at the outer corners of the outer shell body 1, and reinforcing tubes 3 are bolted between the outer walls of the anti-collision corner guards 2 to facilitate the assembly and positioning of the outer shell.

[0055] It also includes: a pad 4 and a movable air chamber 5, which are fixedly installed on the left and right sides and the middle of the inner wall of the outer shell body 1, respectively. A connecting horizontal pipe 6 is also fixed in the middle of the outer wall of the outer shell body 1, and the connecting horizontal pipe 6 communicates with the interior of the movable air chamber 5. The use of the pad 4 and the movable air chamber 5 slightly increases the residual gap between the battery pack and the outer shell when the battery pack is installed, which facilitates the subsequent heat dissipation and cooling of the battery pack.

[0056] Adopting such Figures 3-4 The technical solution shown has the movable air chamber 5 configured as a triangular strip structure, consisting of an outer edge frame 501 and a middle soft membrane layer 502. The outer edge frame 501 is located at the ridge of the triangular strip structure, and the gaps in the outer edge frame 501 are filled with the middle soft membrane layer 502. The middle soft membrane layer 502 has air holes at equal intervals to allow for gas flow and interaction. An adjusting screw 7 is threaded through the connecting horizontal tube 6, and the lower end of the adjusting screw 7 is rotatably connected to the inner wall of the bottom outer edge frame 501, thereby controlling the folding and unfolding of the movable air chamber 5.

[0057] The movable air chamber 5 is configured with a structural composition. By adjusting the threaded connection and rotation of the screw 7, the spacing between the outer edge frames 501 is changed, allowing the middle soft film layer 502 between the outer edge frames 501 to expand and fold for storage. This changes the application volume of the movable air chamber 5, enabling its size to be manually changed during use. In the folded state, it does not affect the assembly and positioning of the battery pack inside the casing. When unfolded, it can expand to facilitate the operation of the battery pack. The heat generated by the battery pack is discharged through the airflow interaction of the movable air chamber 5.

[0058] like Figures 4-5 The technical solution shown includes an intake pipe component 8, bolted to the chassis of the vehicle. An intake grille 9 and a manifold 10 are respectively installed on the front and top of the intake pipe component 8. Air inlets 11 are fixed to the top of both sides of the manifold 10, and these inlets 11 are connected to the lower end of an air guide pipe 12. The air guide pipe 12 is also connected to the hollow interior of the anti-collision corner guard strip 2. The upper and lower corners of the back side of the intake pipe component 8 are designed as cylindrical structures, with exhaust holes 801 opened on these cylindrical structures. The inner walls of the intake pipe component 8 between the upper and lower cylindrical sections are... The structure is designed with a convex triangular shape, which allows the gas introduced into the intake pipe 8 to swirl in the cylindrical structure position, separating particulate impurities in the gas; the manifold 10 is internally connected to both the intake pipe 8 and the gas delivery port 11, and the inner wall of the side of the connection between the intake pipe 8 and the manifold 10 is set as a baffle, so that the gas is stably introduced into the manifold 10 from the intake pipe 8; the gas delivery port 11 is designed with an inverted funnel-shaped structure, and the gas delivery port 11 is set one-to-one with the gas guide pipe 12, and the middle section of the gas guide pipe 12 is composed of a flexible and stretchable hose;

[0059] An intake pipe 8 is installed on the vehicle chassis, allowing it to passively draw in the airflow generated during vehicle operation. This airflow, along with dust and particulate impurities splashed by the vehicle, is simultaneously introduced into the intake pipe 8. Simultaneously, due to the structure of the intake pipe 8, after the gas flows into it, an airflow swirls on the cylindrical structure at the back of the intake pipe 8. The centrifugal force caused by the airflow swirl, due to the mass difference between impurities and air, causes the gas and impurities to separate. The impurities move along the inner wall of the cylindrical structure and are discharged through the exhaust hole 801, achieving impurity removal. The light gas, initially separated from impurities, is guided to the connection point between the intake pipe 8 and the manifold 10, where it swirls again under the action of a baffle. This cleaned gas then flows through the manifold 10 and the gas inlet 11 into the air guide pipe 12, and finally, through the through-flow effect of the air guide pipe 12, it flows rapidly into the reinforced pipe 3.

[0060] According to such Figure 7 and Figure 8 The technical solution shown has an exhaust pipe 13, which is fixed to the outer wall of the outer shell 1, and its two ends are respectively connected to the connecting horizontal pipe 6 and the reinforcing pipe 3. An exhaust head 14 is fixed to the pipe end inside the reinforcing pipe 3. The reinforcing pipe 3 is hollow and L-shaped. The reinforcing pipe 3 and the exhaust head 14 are coaxial and coincident. The exhaust head 14 is corner-shaped with a corner angle of 120°. Both its front and rear sides are open and through. The gas in the reinforcing pipe 3 is discharged under negative pressure through the exhaust head 14.

[0061] Using the above technical solution, the gas flowing rapidly in the reinforcing pipe 3 creates a sudden increase in flow velocity at the oblique cross-section of the exhaust head 14 and the exhaust pipe 13, forming a negative pressure at the cross-section. Under the "Venturi" effect, the low pressure causes the exhaust pipe 13 to continuously draw in gas from the connecting horizontal pipe 6 and the movable air chamber 5. The connection between the connecting horizontal pipe 6 and the movable air chamber 5 is located directly below the connection between the exhaust pipe 13 and the connecting horizontal pipe 6. In turn, the movable air chamber 5 draws in heat energy from the area where the battery pack is located. The gas in the area where the battery pack is located also expands synchronously due to heating. In summary, the exhaust pipe 13, driven by the airflow in the reinforcing pipe 3, continuously absorbs and discharges the working heat generated by the battery pack, achieving a self-cooling effect for battery use. Example

[0062] according to Figure 1 and Figure 7 and Figure 9As shown, this technical solution also discloses a second type of heat dissipation structure for cooling the battery pack, specifically as follows: an exhaust pipe 13 is fixed to the outer wall of the outer shell body 1, and its two ends are respectively connected to the connecting horizontal pipe 6 and the reinforcing pipe 3, and an exhaust head 14 is fixed to the pipe end inside the reinforcing pipe 3; a pushing fan blade 15 is rotatably installed in the reinforcing pipe 3 at the front end of the exhaust head 14, the upper end of the central shaft of the pushing fan blade 15 is located inside the reinforcing pipe 3, and a gear shaft 16 is rotatably installed in the middle position inside the reinforcing pipe 3, and a transmission chain belt 17 is connected between the gear shaft 16 and the central shaft of the pushing fan blade 15; an exhaust fan 18 is also embedded and installed in the connecting horizontal pipe 6 below the middle part of the reinforcing pipe 3, the upper end of the central shaft of the exhaust fan 18 is located in the middle position inside the reinforcing pipe 3, and a rotating gear 19 is sleeved on it, the rotating gear 19 meshes with the gear shaft 16 to realize the upward discharge of hot air in the connecting horizontal pipe 6 and the movable air chamber 5;

[0063] When the gas inside the reinforcing pipe 3 flows continuously, the airflow directly impacts and pushes the fan blade 15, causing the fan blade 15 to rotate around its central axis. The rotation of the fan blade 15 drives the gear shaft 16 to rotate through the transmission chain belt 17. The rotation of the gear shaft 16 drives the exhaust fan 18 to rotate through the meshing of the rotating gear 19, forming an airflow from bottom to top at its installation position. This airflow, through the connection of the horizontal pipe 6 and the movable air chamber 5, achieves the effect of discharging the heat generated by the battery pack during operation. Example

[0064] according to Figures 9-11 As shown, this technical solution also discloses the drive component below the exhaust fan 18;

[0065] The drive component includes a motor body 20 embedded in the connecting horizontal pipe 6 and the movable air chamber 5. A transmission head 21 is slidably mounted on the outer wall of the output shaft of the motor body 20. The outer wall of the lower end of the central shaft of the exhaust fan 18 is set as a regular hexagonal structure. The top of the transmission head 21 is recessed. A clamping block 22 is rotatably mounted at an equal angle on the inner wall of the recessed top of the transmission head 21. The clamping block 22 is circular and has a slot. An elastic damping rubber block is installed between the outer wall of the clamping block 22 and the inner wall of the recessed transmission head 21. The drive component also includes telescopic rods 23 on the left and right sides of the motor body 20. The telescopic rods 23 are filled with thermal expansion and contraction oil. An adjustment frame 24 is fixed between the upper ends of the telescopic rods 23. An elastic element is installed between the adjustment frame 24 and the outer wall of the telescopic rods 23. The middle part of the adjustment frame 24 and the outer wall of the transmission head 21 form a through-type relative rotation structure.

[0066] The transmission head 21 is vertically coaxially arranged with the output shaft of the motor body 20, and the upper outer wall of the output shaft of the motor body 20 is rectangular in cross-section. The bottom of the transmission head 21 is cylindrical, and its inner cylindrical wall forms a radially engaging and axially fitting lifting sliding connection with the outer wall of the output shaft of the motor body 20. The telescopic rod 23 is located between the connecting horizontal pipe 6 and the movable air chamber 5. The outer wall of the telescopic rod 23 is made of heat-conducting material, and the telescopic shaft end of the telescopic rod 23 is equipped with a pressure control switch of the motor body 20 to realize the opening and closing control of the motor body 20.

[0067] The active drive component of the exhaust fan 18 mentioned above is mainly used when the battery pack temperature is too high and none of the above technical solutions can quickly dissipate heat. It is activated to prevent thermal loss of the battery pack in an abnormal state. When the temperature is too high, the telescopic rod 23 extends outward due to the expansion of the internal thermal expansion and contraction oil. The telescopic rod 23 drives the transmission head 21 to rise through the height adjustment frame 24. The clamping block 22 on the raised transmission head 21 is pressed and engaged with the rectangular outer wall of the lower end structure of the central shaft of the exhaust fan 18, so that the clamping block 22 wraps around the lower end of the central shaft of the exhaust fan 18. When the telescopic rod 23 pushes the elastic element installed on it to compress to a preset value, the pressure switch on it closes, which starts the motor body 20. The motor body 20 drives the exhaust fan 18 to rotate and start synchronously through the transmission head 21 and the clamping block 22, so that the exhaust fan 18 can rotate rapidly and drive the airflow at high speed, achieving the effect of self-cooling and heat dissipation of the battery pack.

[0068] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A self-cooling battery pack housing assembly for vehicles, comprising: The outer shell body (1) is composed of two shells with the same structure, and anti-collision corner strips (2) are fixed at the outer corners of the outer shell body (1), and reinforcing tubes (3) are bolted between the outer walls of the anti-collision corner strips (2). Its characteristic is that it further includes: The pad strip (4) and the movable air chamber (5) are respectively fixedly installed on the left and right sides and the middle of the inner wall of the outer shell body (1), and a connecting horizontal pipe (6) is also fixed in the middle of the outer wall of the outer shell body (1), and the connecting horizontal pipe (6) is connected to the interior of the movable air chamber (5). The intake pipe (8) is bolted to the chassis of the car, and the intake pipe (8) is equipped with an intake grille (9) and a manifold (10) on the front and top sides respectively. The manifold (10) has an air supply port (11) fixed on the top of both sides. The air supply port (11) is connected to the lower end of the air guide pipe (12), and the air guide pipe (12) is connected to the hollow interior of the anti-collision corner guard (2). The exhaust pipe (13) is fixed to the outer wall of the outer shell body (1), and its two ends are respectively connected to the connecting horizontal pipe (6) and the reinforcing pipe (3). An exhaust head (14) is fixed at the pipe end inside the reinforcing pipe (3). The reinforcing pipe (3) is hollow and the overall shape of the reinforcing pipe (3) is "L". The reinforcing pipe (3) and the exhaust head (14) are coaxial and their axes coincide. The exhaust head (14) is corner-shaped with a corner angle of 120°. Both its front and rear sides are open and through. The gas in the reinforcing pipe (3) is discharged under negative pressure through the exhaust head (14).

2. The self-cooling battery pack housing assembly for vehicles according to claim 1, characterized in that: The active air chamber (5) is configured as a triangular strip structure, and the active air chamber (5) is composed of an outer edge frame (501) and a middle soft membrane layer (502). The outer edge frame (501) is located at the ridge of the triangular strip structure, and the gap of the outer edge frame (501) is filled with the middle soft membrane layer (502). Furthermore, the middle soft membrane layer (502) has pores at equal intervals to facilitate gas flow and interaction.

3. The self-cooling battery pack housing assembly for vehicles according to claim 2, characterized in that: An adjusting screw (7) is threaded through the connecting horizontal tube (6), and the lower end of the adjusting screw (7) is rotatably connected to the inner wall of the bottom edge frame (501) to realize the folding and unfolding control of the movable air chamber (5).

4. The self-cooling battery pack housing assembly for vehicles according to claim 1, characterized in that: The upper and lower corners of the back of the air intake pipe (8) are all set as cylindrical structures. The cylindrical structure is also provided with exhaust holes (801). The inner wall of the air intake pipe (8) between the upper and lower cylindrical structures is set as a protruding triangular structure, so that the gas introduced into the air intake pipe (8) swirls in the cylindrical structure position and separates particulate impurities in the gas.

5. The self-cooling battery pack housing assembly for vehicles according to claim 4, characterized in that: The manifold (10) is internally connected to the inlet pipe (8) and the gas delivery port (11), and the inner wall of the side of the connection between the inlet pipe (8) and the manifold (10) is set as a baffle, so that the gas is stably introduced into the manifold (10) from the inlet pipe (8).

6. A self-cooling battery pack housing assembly for vehicles according to claim 1 or 4, characterized in that: The gas supply port (11) is configured as an inverted funnel-shaped structure, and the gas supply port (11) and the gas guide pipe (12) are configured in a one-to-one correspondence, and the middle section of the gas guide pipe (12) is composed of a flexible hose that can be elastically stretched.

7. The self-cooling battery pack housing assembly for vehicles according to claim 1, characterized in that: A pusher blade (15) is rotatably installed inside the reinforcing pipe (3) at the front end of the exhaust head (14). The upper end of the central shaft of the pusher blade (15) is located inside the reinforcing pipe (3). A gear shaft (16) is rotatably installed in the middle of the interior of the reinforcing pipe (3). A transmission chain belt (17) is connected between the gear shaft (16) and the central shaft of the pusher blade (15). An exhaust fan (18) is also embedded in the connecting horizontal pipe (6) below the middle of the reinforcing pipe (3). The upper end of the central shaft of the exhaust fan (18) is located in the middle of the reinforcing pipe (3) and is fitted with a rotating gear (19). The rotating gear (19) meshes with the gear shaft (16) to realize the upward discharge of hot air in the connecting horizontal pipe (6) and the movable air chamber (5).

8. The self-cooling battery pack housing assembly for vehicles according to claim 7, characterized in that: It also includes the drive component below the exhaust fan (18); The drive component includes a motor body (20) embedded in the connecting horizontal tube (6) and the movable air chamber (5). A transmission head (21) is also slidably installed on the outer wall of the output shaft of the motor body (20). The outer wall of the lower end of the central shaft of the exhaust fan (18) is set as a regular hexagonal structure. The top of the transmission head (21) is recessed. A clamping block (22) is rotatably installed at an equal angle on the inner wall of the top recess of the transmission head (21). The clamping block (22) is circular and has a slot. An elastic damping rubber block is installed between the outer wall of the clamping block (22) and the inner wall of the transmission head (21). The drive component also includes telescopic rods (23) on the left and right sides of the motor body (20). The telescopic rods (23) are filled with thermal expansion and contraction oil. An adjustment frame (24) is fixed between the upper ends of the telescopic rods (23). An elastic element is installed between the adjustment frame (24) and the outer wall of the telescopic rods (23). The middle part of the adjustment frame (24) and the outer wall of the transmission head (21) form a through-type relative rotation structure.

9. The self-cooling battery pack housing assembly for vehicles according to claim 8, characterized in that: The transmission head (21) and the output shaft of the motor body (20) are vertically coaxially arranged, and the cross-section of the upper outer wall of the output shaft of the motor body (20) is set as a rectangular structure, and the bottom of the transmission head (21) is set as a cylindrical shape, and its cylindrical inner wall and the outer wall of the output shaft of the motor body (20) form a lifting sliding connection with radial engagement and axial contact. The telescopic rod (23) is located between the connecting horizontal tube (6) and the movable air chamber (5). The outer wall of the telescopic rod (23) is made of heat-conducting material, and the telescopic shaft end of the telescopic rod (23) is equipped with a pressure control switch of the motor body (20) to realize the opening and closing control of the motor body (20).

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