Passenger car heat dissipation system

Abstract

The invention discloses a passenger car cooling system, and relates to the technical field of vehicles. The vehicle specifically comprises a vehicle body, a battery module, a rainwater collecting assembly, a water guiding assembly and a cooling assembly. The battery module is arranged in the vehicle body; the rainwater collecting assembly is arranged at the top of the vehicle body, used for receiving rainwater and provided with a discharging end; one end of the water guide assembly is connected with the discharge end; and the cooling assembly is connected with the other end of the water guide assembly, sleeves the outer side of the battery module and is attached to the peripheral wall of the battery module. Rainwater is collected and guided to the cooling assembly attached to the battery module, natural rainfall is used as a cooling medium to absorb heat of the battery, dependence on high-energy-consumption forced heat dissipation equipment is reduced, heat dissipation energy consumption of the whole vehicle is reduced, and therefore the problem that the endurance mileage is shortened is solved.

Description

Technical Field

[0001] This invention relates to the field of vehicle structure technology, and more specifically, to a bus cooling system. Background Technology

[0002] Currently, new energy buses are widely used in the public transportation sector, and they are usually powered by battery modules.

[0003] During operation or charging, the battery modules of new energy buses generate a large amount of heat. If this heat is not dissipated in time, it will affect battery performance and lifespan. With the increasing number of new energy buses, and considering battery cooling, existing new energy buses generally employ onboard air conditioning systems, independent fans, or dedicated liquid cooling systems to ensure battery performance and safety.

[0004] However, while liquid cooling systems are highly efficient, their cooling medium is pre-formulated coolant, resulting in a complex system structure and the need for regular maintenance. Air conditioning and fan cooling consume excessive energy, requiring a significant amount of additional electrical power, leading to a substantial increase in overall vehicle energy consumption and a shortened driving range. Summary of the Invention

[0005] The purpose of this invention is to provide a bus cooling system to alleviate the technical problems of existing new energy bus liquid cooling systems, which are complex in structure and require regular maintenance, and whose air conditioning and fan cooling consume too much energy, resulting in a significant increase in overall vehicle energy consumption and a shortened driving range.

[0006] The present invention provides a bus cooling system, comprising: a vehicle body, a battery module, a rain collection assembly, a water guiding assembly, and a cooling assembly.

[0007] The battery module is located inside the vehicle body.

[0008] A rain collection assembly is located on the top of the vehicle body and is used to collect rainwater; the rain collection assembly has a discharge end.

[0009] The water guiding component is located on the vehicle body and one end is connected to the discharge end.

[0010] The cooling component is connected to the other end of the water guiding component, and the cooling component is sleeved on the outside of the battery module and fits against the outer peripheral wall of the battery module.

[0011] Furthermore, the cooling assembly includes cooling water pipes.

[0012] The cooling water pipe is spirally wound and sleeved on the outer peripheral surface of the battery module.

[0013] Furthermore, the cooling assembly also includes a water outlet pipe.

[0014] One end of the outlet pipe is connected to the cooling water pipe, and the other end extends downwards from the vehicle body to discharge cooling water.

[0015] Furthermore, the angle between the axis of the water outlet pipe and the horizontal plane is 30 degrees.

[0016] Furthermore, the bus cooling system also includes: a first rotating shaft, a rotating motor, and a control valve.

[0017] The first pivot is located on the vehicle body and at the bottom of the vehicle body.

[0018] A rotating motor is mounted on the vehicle body and is rotatably connected to the first rotating shaft.

[0019] The control valve is located on the cooling assembly and is drivenly connected to the first rotating shaft.

[0020] Furthermore, the control valve is a ball valve.

[0021] The ball valve is located inside the water outlet pipe, and there are multiple ball valves and multiple water outlet pipes, each corresponding to the other.

[0022] There are multiple rotating shafts, which are connected in a driving manner and are respectively connected in a driving manner to multiple ball valves.

[0023] Furthermore, the bottom of the vehicle body is provided with an air-cooling trough.

[0024] One end of the air-cooled slot faces the battery module, and the other end faces away from the vehicle body.

[0025] The bus cooling system also includes a drive mechanism and a cooling grille.

[0026] The drive mechanism is located on the vehicle body and within the air-cooling trough.

[0027] The heat dissipation grille is located at the opening of the air-cooled slot and is connected to the output end of the drive mechanism.

[0028] Furthermore, the drive mechanism includes: a second rotating shaft, a first rack, and a first gear.

[0029] There are multiple second rotating shafts, all of which are located in the air-cooling slot. The multiple second rotating shafts are spaced apart and arranged in parallel. The heat dissipation grille is connected to the multiple second rotating shafts in a driving connection.

[0030] There are multiple first gears, which are correspondingly disposed on multiple second rotating shafts.

[0031] The first rack is connected to the first gear on a plurality of second rotating shafts.

[0032] Furthermore, the rain collection assembly includes an angled rain-collecting block.

[0033] Multiple inclined rain-receiving blocks are spaced apart on the top of the vehicle body, with both ends of the inclined rain-receiving blocks sinking and the middle section protruding outward.

[0034] Furthermore, the water guiding assembly includes a drain pipe.

[0035] There are multiple drain pipes, which are arranged around the circumference of the vehicle body.

[0036] Beneficial effects: The bus cooling system provided by this invention includes a rain collection component, a water guiding component, and a cooling component that adheres to the outer side of the battery module. It can directly utilize natural precipitation as a cooling medium in rainy conditions. As rainwater flows through the cooling component, it carries away the heat generated by the battery module, thereby reducing reliance on high-energy-consuming forced cooling equipment such as onboard air conditioners and fans, lowering the additional electrical energy consumption required for overall vehicle cooling, and helping to alleviate the problem of shortened driving range. Simultaneously, using rainwater as a cooling medium eliminates the need for pre-prepared coolant, simplifying the cooling system structure and reducing maintenance costs. The close contact between the cooling component and the outer wall of the battery module ensures efficient heat exchange, allowing rainwater cooling to play a practical auxiliary cooling role. Attached Figure Description

[0037] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the vehicle body provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the bottom structure of the vehicle body provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure inside the sealed box of the vehicle body provided in an embodiment of the present invention; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 for Figure 3 Enlarged view of section B in the middle.

[0039] icon: 100-Vehicle body; 101-Base plate; 102-Air cooling duct; 103-Second rotating shaft; 104-First rack; 105-First gear; 106-Blade; 110-Vehicle roof; 120-First rotating shaft; 130-Rotating motor; 140-Control valve; 150-Second gear; 160-Second rack; 200-Battery module; 300-Rain collection assembly; 400-Water guiding assembly; 500-Cooling assembly; 510-Cooling water pipe; 520-Water outlet pipe. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0042] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0043] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0044] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0045] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0046] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0047] Please see Figures 1 to 5 The bus cooling system provided in this embodiment includes a vehicle body 100, a battery module 200, a rain collection component 300, a water guiding component 400, and a cooling component 500.

[0048] The battery module 200 is housed within the vehicle body 100. A rainwater collection assembly 300 is located on the top of the vehicle body 100 and is used to collect rainwater; the rainwater collection assembly 300 has a discharge end. A water guiding assembly 400 is located on the vehicle body 100 and one end is connected to the discharge end. A cooling assembly 500 is connected to the other end of the water guiding assembly 400, and the cooling assembly 500 is sleeved on the outside of the battery module 200 and fits against the outer peripheral wall of the battery module 200.

[0049] In this embodiment, the bus cooling system operates under rainy conditions. Rainwater falls onto the rain collection assembly 300 on the top of the vehicle body 100, is collected by the rain collection assembly 300, and then enters the water guiding assembly 400 from its outlet. Subsequently, the water guiding assembly 400 guides the rainwater to the cooling assembly 500. Since the cooling assembly 500 is fitted onto the outside of the battery module 200 and is in contact with its outer peripheral wall, the rainwater absorbs the heat generated by the battery module 200 through heat exchange as it flows inside the cooling assembly 500. The heat-absorbing rainwater is then discharged outside the vehicle downstream of the cooling assembly 500. During this process, the cooling assembly 500 uses natural precipitation as a cooling medium, eliminating the need for additional electrical energy to drive the compressor or fan.

[0050] In this structure, the bus cooling system provided in this embodiment converts previously wasted rainwater into cooling resources for the battery module 200, reducing reliance on onboard air conditioning, fans, or dedicated liquid cooling systems, thereby lowering the overall vehicle cooling energy consumption and helping to alleviate the problem of shortened driving range. Simultaneously, because the cooling component 500 is directly attached to the battery module 200, the heat exchange efficiency is high, effectively controlling battery temperature under rainy conditions.

[0051] In this embodiment, the cooling assembly 500 includes a cooling water pipe 510. The cooling water pipe 510 is spirally wound and sleeved on the outer peripheral surface of the battery module 200.

[0052] In this embodiment, the cooling water pipe 510 is spirally wound to the outer wall of the battery module 200, increasing the contact area with the outer peripheral wall of the battery module 200. After rainwater enters the cooling water pipe 510, it flows along a spiral path, resulting in a longer flow path and more sufficient heat exchange time between the rainwater and the battery module 200.

[0053] Furthermore, the spiral structure of the cooling water pipe 510 also utilizes centrifugal force to generate slight turbulence in the rainwater within the curved pipe, which helps to disrupt the boundary layer and improve the heat transfer coefficient. Compared to straight pipes or simple coils, the spirally wound cooling water pipe 510 improves cooling efficiency without increasing space requirements, allowing a unit volume of rainwater to absorb more heat, thereby enhancing the cooling capacity of the battery module 200.

[0054] In this embodiment, the cooling assembly 500 also includes a water outlet pipe 520. One end of the water outlet pipe 520 is connected to the cooling water pipe 510, and the other end extends downward toward the vehicle body 100 for discharging cooling water.

[0055] After heat exchange, the heated rainwater is discharged from the cooling water pipe 510 to maintain a continuous water intake in the cooling water pipe 510. In this embodiment, the outlet pipe 520 is connected to the bottom of the cooling water pipe 510, and uses gravity to guide the heat-absorbing rainwater to the bottom of the vehicle body 100 for discharge. The outlet pipe 520 extends towards the ground to prevent the discharged water from splashing onto the interior of the vehicle body 100 or other electrical components.

[0056] This structure enables unidirectional flow of cooling water, ensuring continuous operation of the cooling circuit. The outlet is located below the vehicle body 100, allowing heated rainwater to be directly discharged onto the road surface or wheel arch area, utilizing airflow to accelerate evaporation and provide auxiliary heat dissipation.

[0057] In this embodiment, the angle between the axis of the water outlet pipe 520 and the horizontal plane is 30 degrees.

[0058] Specifically, in this embodiment, the water outlet pipe 520 is arranged at a 30-degree angle. This structure enables gravity-driven water flow while preventing excessive water flow and splashing caused by excessive vertical descent. The 30-degree angle directs the outlet of the water outlet pipe 520 towards the rear (or lower side) of the vehicle body 100, forming an angle with the driving direction, allowing the airflow to atomize and carry away the discharged water. In this embodiment, the inclined water outlet pipe 520 optimizes the drainage direction, thereby reducing the erosion and corrosion of the vehicle body 100 chassis by the drainage, while accelerating evaporation with airflow, improving secondary heat dissipation efficiency. Furthermore, it facilitates the arrangement of the water outlet pipe 520 within the limited space under the vehicle, avoiding interference with suspension, transmission, and other components.

[0059] In this embodiment, the bus cooling system also includes a first rotating shaft 120, a rotating motor 130, and a control valve 140.

[0060] The first rotating shaft 120 is located on the vehicle body 100 and at the bottom of the vehicle body 100. The rotating motor 130 is located on the vehicle body 100 and is rotatably connected to the first rotating shaft 120. The control valve 140 is located on the cooling assembly 500 and is drively connected to the first rotating shaft 120.

[0061] In this embodiment, the rotating motor 130 can drive the first rotating shaft 120 to rotate after receiving a control signal (e.g., a signal from a battery temperature sensor). The rotation of the first rotating shaft 120 actuates the control valve 140 to regulate or deactivate the rainwater flow within the cooling assembly 500. When the battery temperature is high, the control valve 140 opens wider, allowing more rainwater to flow through. Similarly, when the battery temperature is low or cooling is not required, the control valve 140 can close or reduce its opening to prevent over-cooling. This structure achieves active regulation of the cooling water flow, matching the cooling intensity to the actual heat dissipation needs of the battery, avoiding waste of rainwater resources and excessively low battery temperatures. Furthermore, this regulation method has extremely low energy consumption (only the rotating motor 130 consumes a small amount of electrical energy), significantly reducing the energy consumption of the cooling system itself compared to continuously running an air conditioner or fan.

[0062] In this embodiment, the control valve 140 is a ball valve. The ball valve is located inside the outlet pipe 520, and there are multiple ball valves and outlet pipes 520, each corresponding to the other.

[0063] There are multiple rotating shafts, with multiple first rotating shafts 120 connected in a transmission connection, and each of the multiple rotating shafts is connected in a transmission connection with multiple ball valves.

[0064] Specifically, in this embodiment, each outlet pipe 520 is equipped with a ball valve, and the valve core opening of the ball valve is controlled by its corresponding first rotating shaft 120. Multiple first rotating shafts 120 are linked through gear meshing or connecting rods, enabling all ball valves to operate synchronously. Driving one of the first rotating shafts 120 with a rotating motor 130 will cause all the first rotating shafts 120 to rotate, thereby simultaneously regulating the flow rate in multiple outlet pipes 520. Ball valves have the characteristics of good sealing performance and low rotational torque, making them suitable for use in rainwater media.

[0065] Furthermore, in this embodiment, by synchronously controlling the opening and closing of multiple water outlet pipes 520, the flow rate of each cooling water pipe branch 510 is ensured to be uniform, avoiding the problem of insufficient cooling in some battery areas while excessive cooling in other areas. The ball valve has a simple structure, is not easily clogged, and is suitable for rainwater environments containing a small amount of impurities.

[0066] In this embodiment, a cooling trough 102 is provided at the bottom of the vehicle body 100. One end of the cooling trough 102 faces the battery module 200, and the other end faces away from the vehicle body 100.

[0067] Furthermore, the bus cooling system provided in this embodiment also includes a drive mechanism and a cooling grille. The drive mechanism is located in the vehicle body 100 and within the air-cooling slot 102. The cooling grille is located at the opening of the air-cooling slot 102 and is connected to the output end of the drive mechanism.

[0068] In this embodiment, the air-cooled slot 102 provides an airflow channel, with a heat dissipation grille located at the slot opening, the opening of which is adjustable. On sunny, rainless days, the drive mechanism opens the heat dissipation grille, allowing natural wind or fan airflow during driving to enter the air-cooled slot 102 and blow onto the battery module 200 for air cooling. On rainy days, the drive mechanism closes the heat dissipation grille to reduce rainwater entering the air-cooled slot 102, while prioritizing the water cooling mode of the cooling component 500. The drive mechanism can automatically switch the grille state according to the weather and battery temperature.

[0069] This structure creates a composite cooling system that combines water cooling and air cooling. Air cooling is used in sunny weather, while water cooling is prioritized in rainy weather. This allows the bus cooling system provided in this embodiment to maintain good battery cooling performance under different weather conditions, while reducing the energy consumption burden of a single cooling method.

[0070] In this embodiment, the drive mechanism includes a second rotating shaft 103, a first rack 104, and a first gear 105.

[0071] Multiple second rotating shafts 103 are arranged in the air-cooled slot 102, spaced apart and parallel to each other. A heat dissipation grille is connected to the multiple second rotating shafts 103. Multiple first gears 105 are correspondingly arranged on the multiple second rotating shafts 103. A first rack 104 is connected to the first gears 105 on the multiple second rotating shafts 103.

[0072] In this embodiment, the first rack 104 moves linearly along its own axial direction, and the movement of the first rack 104 drives the multiple first gears 105 meshing with it to rotate synchronously. Each first gear 105 is fixed on its corresponding second rotating shaft 103, and the rotation of the first gear 105 drives the second rotating shaft 103 to rotate, thereby driving the blades 106 of the heat dissipation grille to rotate.

[0073] In this embodiment, the opening angle of the heat dissipation grille is adjusted by controlling the direction and distance of movement of the first rack 104. The end of the first rack 104 engages with a traction electromagnet to drive its movement, thereby synchronously controlling multiple heat dissipation grille blades 106. The structure is compact and the operation is reliable. The gear meshing transmission has high precision, enabling stepless adjustment of the grille opening to meet different heat dissipation requirements.

[0074] In this embodiment, the rain collection assembly 300 includes inclined rain-collecting blocks. Multiple inclined rain-collecting blocks are spaced apart on the top of the vehicle body 100, with both ends of the inclined rain-collecting blocks recessed and the middle section protruding outward.

[0075] The convex middle section of the inclined rain-collecting block is the main rain-collecting surface. After rainwater falls onto the convex structure at the end, it flows along the inclined surface to the discharge ends at both ends by gravity. Multiple inclined rain-collecting blocks are arranged at intervals, thus forming multiple drainage channels on the top of the vehicle body 100. The inclined rain-collecting blocks can be made of aluminum alloy by stamping, and the surface is anodized to reduce rainwater adhesion. The spacing between adjacent inclined rain-collecting blocks is optimized to about 60mm, which ensures rain-collecting efficiency while preventing the accumulation of fallen leaves and other debris.

[0076] This structure improves the rainwater collection efficiency of the roof 110, preventing rainwater from accumulating on the roof 110 surface. Furthermore, the sloping structure utilizes gravity for drainage, requiring no additional power. The sunken structures at both ends allow rainwater to be concentrated at the discharge end, facilitating connection with the water guiding component 400 and reducing rainwater residue and evaporation loss.

[0077] In this embodiment, the water guiding assembly 400 includes a drain pipe. There are multiple drain pipes arranged circumferentially along the vehicle body 100.

[0078] In this embodiment, each discharge end is individually connected to a drain pipe, which extends downwards along the interior of the pillars or side panels of the vehicle body 100. Multiple drain pipes are arranged circumferentially around the vehicle body 100, ensuring that rainwater from different areas of the roof 110 can be discharged nearby, preventing excessive lateral flow of rainwater on the roof 110. The drain pipes can employ a variable diameter design, with a larger opening diameter at the upper end (80mm in this embodiment) to increase the water collection area, and a gradually narrowing lower end (40mm in this embodiment) to accelerate water flow.

[0079] This structure allows rainwater to collect and be transported downwards quickly, reducing the risk of pipe blockage. Furthermore, the circumferential arrangement ensures that rainwater from all locations around the vehicle body (front, rear, left, and right) can be effectively collected, increasing the overall rainwater collection capacity of the system. The variable diameter structure of the drain pipe accelerates water flow based on Bernoulli's principle, thus preventing air resistance at bends.

[0080] Specifically, in this embodiment, the battery module 200 is mounted on the chassis of the vehicle body 100 and located in the middle section of the vehicle body. The top of the vehicle body 100 is the roof 110, on which multiple equidistantly distributed oblique rain-collecting blocks are provided. Each oblique rain-collecting block has a conical structure with both ends recessed and the middle section protruding, and the inclination angle of the conical structure is 45 degrees. The oblique rain-collecting blocks are specifically made of aluminum alloy by stamping, and the surface is anodized with a roughness of Ra0.4. The distance between two adjacent oblique rain-collecting blocks is 60mm.

[0081] The discharge end (i.e., the lowest point at both ends) of the sloping rain-collecting block is connected to four drain pipes. The four drain pipes are symmetrically arranged at the bottom of the roof 110. The upper diameter of the drain pipe is 80mm, and the lower diameter tapers to 40mm. The lower ends of the four drain pipes are connected to a single cooling water pipe 510.

[0082] The cooling water pipe 510 is made of silicone and is spirally wound and fitted onto the outer circumference of the battery module 200. The cooling water pipe 510 is fixed to the battery module 200 with nylon cable ties. Four symmetrically arranged water outlet pipes 520 are connected to the bottom of the cooling water pipe 510. The axis of each water outlet pipe 520 forms a 30-degree angle with the horizontal plane, and each water outlet pipe 520 is equipped with a one-way valve at its end.

[0083] During operation in rainy weather, rainwater falls onto the inclined rain-collecting block and flows along the 45° conical surface to both ends of the block. The rainwater then collects through the drain pipe into the cooling water pipe 510. The rainwater flows within the spiral cooling water pipe 510 to absorb the heat generated by the battery module 200. Comparative measurements show that rainwater cooling can reduce the temperature of the battery module 200 by 10-15°C. The heated rainwater is then discharged through the outlet pipe 520 to the wheel arch area, where it evaporates more rapidly using the airflow from the vehicle, forming secondary heat dissipation.

[0084] Furthermore, in this embodiment, two symmetrically arranged first rotating shafts 120 are rotatably mounted inside the vehicle body 100. One of the first rotating shafts 120 is equipped with a rotating motor 130 via a coupling. Control valves 140 (ball valves) are fixedly fitted onto both first rotating shafts 120, and the control valves 140 are located within the water outlet pipe 520. Second gears 150 are also fixedly fitted onto the outer circumferential surface of the first rotating shafts 120. The two second gears 150 mesh with each other to form a flow control mechanism together with the rotating motor 130 and the first rotating shafts 120.

[0085] The flow control mechanism also includes a second rack 160, which meshes with two second gears 150 to further ensure synchronous rotation of the two second gears 150. The rotary motor 130 drives the first rotating shaft 120 to rotate based on the temperature sensor signal from the battery module 200. This rotation, via the second gears 150, drives the other first rotating shaft 120 to rotate synchronously in the opposite direction, thereby simultaneously adjusting the opening of the two control valves 140 (ball valves). When the battery temperature is higher than the set value, the ball valve opening increases. Similarly, when the temperature is lower, the opening decreases. The adjustment process consumes very little electrical energy, avoiding continuous high energy consumption.

[0086] Specifically, in this embodiment, the first gear 105 and the second gear 150 both have a module of 1.5 and a pressure angle of 20° to ensure smooth transmission without backlash.

[0087] Furthermore, in this embodiment, there are two first racks 104 and six second shafts 103. The two first racks 104 are symmetrically and slidably mounted inside the vehicle body 100, and each first rack 104 can drive six second shafts 103. The six second shafts 103 are symmetrically arranged on both sides of the bottom of the vehicle body 100 to form two air-cooling slots 102. A first gear 105 is fixedly sleeved on the second shaft 103, and the first gear 105 meshes with the first rack 104. A heat dissipation grille is also fixedly sleeved on the second shaft 103. The heat dissipation grille has a louvered blade structure 106, and sealing strips are provided between the blades 106.

[0088] On sunny days, the first rack 104 is driven to move horizontally by the traction electromagnet, which in turn opens the cooling grille through gear meshing, utilizing the natural wind of the vehicle to cool the battery module 200. On rainy days, the cooling grille closes, prioritizing rainwater cooling. The combined operation of air cooling and water cooling modes ensures that the bus's cooling system can maintain the operating temperature of the battery module 200 under different weather conditions, while reducing the energy consumption dependence on a single cooling system.

[0089] It should be noted that in this embodiment, the bottom of the vehicle body 100 is provided with a base plate 101, and a sealed box is formed between the base plate 101 and the vehicle body 100. The transmission parts of the first gear 105 and the first rotating shaft 120 are encapsulated in the weather-resistant sealed box. The protection level of the sealed box reaches IP67, which can prevent water vapor erosion from causing transmission jamming.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A passenger vehicle cooling system, characterized in that, include: Vehicle body (100); A battery module (200) is disposed within the vehicle body (100); A rain collection assembly (300) is disposed on the top of the vehicle body (100) and is used to collect rainwater, the rain collection assembly (300) having a discharge end; A water guiding assembly (400) is disposed on the vehicle body (100) and one end is connected to the discharge end; A cooling component (500) is connected to the other end of the water guiding component (400). The cooling component (500) is sleeved on the outside of the battery module (200) and fits against the outer peripheral wall of the battery module (200).

2. The bus cooling system according to claim 1, characterized in that, The cooling assembly (500) includes cooling water pipes (510); The cooling water pipe (510) is spirally wound and sleeved on the outer peripheral surface of the battery module (200).

3. The bus cooling system according to claim 2, characterized in that, The cooling assembly (500) also includes a water outlet pipe (520); One end of the outlet pipe (520) is connected to the cooling water pipe (510), and the other end extends downwards from the vehicle body (100) to discharge cooling water.

4. The bus cooling system according to claim 3, characterized in that, The angle between the axis of the outlet pipe (520) and the horizontal plane is 30 degrees.

5. The bus cooling system according to claim 3, characterized in that, The bus cooling system also includes: A first rotating shaft (120) is disposed on the vehicle body (100) and located at the bottom of the vehicle body (100); A rotating motor (130) is disposed on the vehicle body (100) and rotatably connected to the first rotating shaft (120); A control valve (140) is located on the cooling assembly (500) and is drively connected to the first rotating shaft (120).

6. The bus cooling system according to claim 5, characterized in that, The control valve (140) is a ball valve; The ball valve is located inside the water outlet pipe (520), and there are multiple ball valves and multiple water outlet pipes (520) arranged in a one-to-one correspondence; There are multiple rotating shafts, which are connected in a driving manner and are respectively connected in a driving manner to multiple ball valves.

7. The bus cooling system according to any one of claims 1-6, characterized in that, The bottom of the vehicle body (100) is provided with an air-cooling trough (102); One end of the air-cooled slot (102) faces the battery module (200), and the other end faces away from the vehicle body (100); The bus cooling system also includes: a drive mechanism and a cooling grille; The drive mechanism is disposed on the vehicle body (100) and located within the air-cooling duct (102); The heat dissipation grille is located at the opening of the air-cooled slot (102) and is connected to the output end of the drive mechanism.

8. The bus cooling system according to claim 7, characterized in that, The drive mechanism includes: a second rotating shaft (103), a first rack (104), and a first gear (105); There are multiple second rotating shafts (103) and they are all located in the air-cooled slot (102). The multiple second rotating shafts (103) are spaced apart and arranged in parallel. The heat dissipation grille is connected to the multiple second rotating shafts (103) in a transmission manner. The first gear (105) is multiple and is correspondingly disposed on multiple second rotating shafts (103); The first rack (104) is connected to the first gear (105) on a plurality of second rotating shafts (103).

9. The bus cooling system according to claim 1, characterized in that, The rain collection assembly (300) includes an angled rain-collecting block; Multiple inclined rain-receiving blocks are spaced apart on the top of the vehicle body (100), with both ends of the inclined rain-receiving blocks sinking and the middle section protruding outward.

10. The bus cooling system according to claim 1, characterized in that, The water guiding assembly (400) includes a drain pipe; The drain pipes are multiple and arranged circumferentially along the vehicle body (100).

Images