Electric motorcycle lithium battery module with heat dissipation management function

Abstract

The invention relates to the technical field of battery packs, in particular to an electric motorcycle lithium battery module with heat dissipation management, which comprises a frame, a water cooling system, an air cooling module and a battery, the water cooling system, the air cooling module and the batteries are integrated on the frame, a plurality of groups of batteries are arranged in the frame, each group of batteries is mounted on the frame through a battery pack frame, the water cooling system comprises a hydraulic cylinder, a water cooling box and a water cooling pipe, the two ends of the hydraulic cylinder are communicated with the water cooling pipe and the water cooling box through pipelines respectively, and the water tank is communicated with the water cooling pipe through a pipeline. The hydraulic cylinder, the water cooling box and the water cooling pipe form a closed loop; the hydraulic cylinder comprises a cylinder body, a hydraulic cylinder upper rod, a one-way valve and a buffer one-way valve; the hydraulic cylinder upper rod is installed in the cylinder body in a sliding mode, a one-way valve is arranged on the hydraulic cylinder upper rod, and buffering one-way valves are arranged on connecting pipelines of the hydraulic cylinder, the water cooling pipe and the water cooling box. The invention aims to solve the problems of high energy consumption, poor adaptability and the like of the existing heat dissipation system.

Description

Technical Field

[0001] This invention relates to the field of battery pack technology, specifically to a lithium battery module for electric motorcycles with heat dissipation management. Background Technology

[0002] With the popularization of green travel concepts and the growth in short-distance travel demand, electric motorcycles have become the preferred choice for short-distance travel due to their environmental friendliness, convenience, and low maintenance costs. As the core power source, the performance of lithium battery modules directly determines range, power stability, and safety, and they continuously generate heat under all operating conditions, including driving and acceleration. If this heat is not dissipated in time, it will lead to battery capacity degradation, reduced range, shortened cycle life, and increased operating costs. More seriously, exceeding the safety threshold can trigger a chain reaction such as electrolyte decomposition, inducing thermal runaway and causing safety accidents such as fires and explosions, threatening the safety of riders and passengers.

[0003] To address this issue, patent application CN11426241A discloses a lithium battery pack thermal management system and control method, including a battery pack, a sealing and insulation device, a heating device, and a cooling device. It monitors the voltage, current, and temperature of each individual battery in real time, and estimates the SOC and SOH values ​​of the battery pack. When the temperature of an individual battery is high, it controls a radiator and water pump to cool the battery pack; when the ambient temperature is low, it shuts off the radiator and water pump. Simultaneously, the sealing and insulation device and the heating device maintain the battery pack temperature above zero degrees Celsius. When thermal runaway occurs in the battery pack, it automatically cuts off the power output, and the management unit controls a fire extinguisher for rapid fire suppression. However, in practical applications, equipping the battery pack with additional fans and water pumps to meet the heat dissipation requirements of the lithium battery module results in significant range loss. Removing these additional power-consuming components and instead adopting an integrated heat dissipation solution based on the electric motorcycle's own operating conditions can fundamentally avoid the problem of reduced range.

[0004] Therefore, in order to solve the battery heat dissipation management problem, a lithium battery module for electric motorcycles with heat dissipation management is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a lithium battery module for electric motorcycles with heat dissipation management. This invention provides a lithium battery module heat dissipation management structure that eliminates the need for an additional water pump, utilizes a combination of water and air cooling for heat dissipation, and also has shock absorption and reinforcement effects, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A lithium battery module for electric motorcycles with heat dissipation management includes a frame, a water-cooling system, an air-cooling module, and a battery. The water-cooling system, air-cooling module, and battery are integrated on the frame. Multiple battery packs are housed inside the frame, each battery pack mounted on the frame via a battery pack frame. The water-cooling system includes a hydraulic cylinder, a water-cooling box, and water-cooling pipes. The two ends of the hydraulic cylinder are connected to the water-cooling pipes and the water-cooling box via pipes, respectively. The water-cooling box is connected to the water-cooling pipes via pipes. The hydraulic cylinder, water-cooling box, and water-cooling pipes form a closed loop. The hydraulic cylinder includes a cylinder body, a hydraulic cylinder upper rod, a one-way valve, and a buffer one-way valve. The hydraulic cylinder upper rod is slidably mounted inside the cylinder body and is equipped with a one-way valve. A buffer one-way valve is provided on the pipes connecting the hydraulic cylinder to the water-cooling pipes and the water-cooling box. The air-cooling module includes an air inlet, an air outlet, and heat sinks. The air outlet and air inlet are located at the front and rear ends of the frame. Heat sinks are provided on the battery pack frame, and the heat sinks are in contact with the water-cooling pipes.

[0007] The air-cooled module and water-cooled system work together to achieve efficient heat dissipation. The module includes an air inlet, air outlet, heat sink, battery pack frame, and air deflector. The air inlet and outlet are located at the front and rear of the frame, respectively, forming a continuous air-cooling channel. When the vehicle is in motion, air enters through the air inlet and exits through the rear air outlet, eliminating the need for an additional cooling fan and fundamentally avoiding range loss due to fan power consumption. During vehicle operation, external airflow rushes in at high speed through the air inlet under pressure differential, forming a uniform airflow field after being guided by the air deflector. The water-cooled system innovatively uses the vibration of the electric motorcycle during operation and the inertia during braking as a power source. Through the cooperation of a hydraulic cylinder with a built-in one-way valve and a buffer one-way valve, the coolant is driven to circulate directionally in a closed-loop system. This eliminates the need for an additional water pump and drive motor, completely avoiding battery power loss caused by the reliance on electric drive in traditional water-cooled systems. It maximizes the retention of battery output power for vehicle operation, significantly improving the actual range of the electric motorcycle.

[0008] Preferably, the water-cooling pipe has a spiral portion, which is spirally wound around the outer periphery of the battery pack frame in a series manner and fits tightly against the outer surface of the battery pack frame.

[0009] The water-cooling pipes are spirally wound around the outer periphery of the battery pack frame. Compared to a straight or segmented arrangement, this significantly increases the contact length and contact area between the water-cooling pipes and the battery pack frame. This allows the coolant to more fully contact the surface of the battery pack frame and quickly absorb the heat conducted by the battery through the frame. Simultaneously, the tight fit effectively reduces the contact thermal resistance between the water-cooling pipes and the frame, avoiding heat conduction efficiency loss due to gaps. This significantly improves the heat transfer rate from the battery to the coolant, enabling the water-cooling system to quickly respond to the battery's heat generation needs. Furthermore, the heat sink is fixed to the battery pack frame and tightly fitted with the spirally wound water-cooling pipes. On one hand, its high thermal conductivity allows for rapid heat transfer from the battery to the water-cooling pipes, providing an efficient heat conduction path for the water-cooling system. On the other hand, it increases the contact area with airflow, allowing for rapid heat dissipation under the influence of airflow. The tight fit of the spiral water-cooling pipes allows the heat from the heat sink to be transferred to the coolant and quickly dissipated through airflow, achieving a triple synergy of heat conduction, liquid cooling heat absorption, and air cooling heat dissipation, significantly improving the overall heat exchange efficiency.

[0010] Preferably, the heat sink is mounted on the battery pack frame, and an installation gap is reserved between the heat sinks. The water cooling pipe is located inside the installation gap. A mating groove is provided between the installation gaps to cooperate with the water cooling pipe. The mating groove contacts the water cooling pipe in a semi-circular shape.

[0011] Electric motorcycles experience continuous vibration and bumps during operation, making traditional water-cooling pipe fixing methods prone to loosening and displacement. This design, through the fit between the groove and the installation gap, provides bidirectional restraint for the water-cooling pipe, firmly fixing it between the heat sink fins and preventing it from wobbling. Simultaneously, the fitted design of the groove disperses the stress on the water-cooling pipe during vibration, preventing leaks or pipe damage at connections due to prolonged vibration. This significantly improves the structural stability and lifespan of the water-cooling system under complex road conditions, making it suitable for the operating conditions of electric motorcycles. The airflow guidance of the heat sink fins can more quickly dissipate heat from the water-cooling pipe and battery pack frame.

[0012] Preferably, the heat sink has a rectangular thin plate structure and is fixed to the outer surfaces of both sides of the battery pack frame. The angle between the heat sinks on two adjacent battery pack frames is 100 to 120 degrees, and the heat sinks between two adjacent battery pack frames are inclined with an inclination angle of 6 to 30 degrees.

[0013] The heat sinks of adjacent battery pack frames are angled at 100-120 degrees, while the lateral heat sinks are tilted at 6-30 degrees. When air enters from the air inlet, the airflow velocity is faster between the laterally adjacent heat sinks and slightly slower between the front and rear adjacent battery pack frames. This allows the airflow to penetrate obliquely into the gaps between the battery pack frames, achieving comprehensive airflow coverage of the battery module. Regardless of whether the battery pack is located in the center or at the edge of the module, the heat it generates can be quickly carried away by the airflow through the corresponding heat sinks, effectively eliminating local overheating dead zones, ensuring the overall temperature consistency of the battery module, delaying local capacity decay, and reducing the risk of thermal runaway.

[0014] Preferably, the water-cooled box is located behind the front wheel, the water-cooled box has a windward surface with an inclined streamlined design, and the air inlet is located below the water-cooled box.

[0015] The water-cooled tank is located behind the front wheel, with a sloping, streamlined design on its windward side. During riding, high-speed airflow continuously passes through the tank, improving heat dissipation efficiency and effectively preventing localized overheating caused by prolonged heat exchange. This avoids uneven heat dissipation and extends the lifespan of the coolant. Simultaneously, it directs airflow into the air inlet, ensuring a more even airflow distribution within the cooling channel. This not only enhances the tank's own heat dissipation efficiency but also improves cooling efficiency without significantly increasing wind resistance. Furthermore, it works in synergy with the air inlet of the cooling module, increasing the airflow and further strengthening the overall cooling effect. Moreover, placing the water-cooled tank behind the front wheel fully utilizes the unused space in this area, avoiding encroachment on the installation space of core components such as the battery module and hydraulic cylinders, achieving efficient use of the vehicle's overall space.

[0016] Preferably, the air inlet is provided with a front dustproof net, and the air inlet is provided with two guide plates located behind the front dustproof net, with the included angle between the two guide plates being 80 to 120 degrees.

[0017] The angled structure of the deflector plate can regulate and gather the dispersed airflow passing through the front dust filter, avoiding air intake loss caused by airflow turbulence. On the other hand, the gradual channel of 80-120 degrees can create a slight compression effect on the airflow, achieving air pressure and speed enhancement, significantly improving the intake airflow velocity and intake volume per unit time. The front and rear dust filters can effectively filter dust, particulate matter, sand and other impurities in the driving airflow, preventing impurities from entering the air-cooling channel and adhering to the surface of the heat sink, clogging the gap between the water-cooling pipe and the heat sink, or wearing down the heat exchange components, thus solving the problem of reduced heat dissipation efficiency caused by dust accumulation in traditional air-cooling systems.

[0018] Preferably, a cooling switch is provided at the front end of the frame corresponding to the outer side of the air inlet. The cooling switch is detachably fixed to the frame by a snap-fit. The cooling switch is located directly in front of the front dustproof net and maintains a preset distance from the surface of the front dustproof net so as not to block the ventilation area of ​​the front dustproof net.

[0019] The air-cooled switch is located in front of the front dustproof net. With the shielding effect of the front dustproof net, it can reduce the direct impact or adhesion of rainwater, dust, sand and other impurities on the switch surface during driving. This prevents impurities from entering the switch and causing faults such as poor contact and short circuits, effectively improving the protection level and operational reliability of the switch in complex driving environments and extending its service life.

[0020] Preferably, the water-cooled box adopts a modular design, and the water-cooled box is composed of multiple independent water tanks with the same structure and suitable size connected in series by water-cooling pipes.

[0021] The modular design allows the water-cooling tank to be flexibly adjusted in terms of the number and series arrangement of individual water tanks according to the space layout of different electric motorcycles. This eliminates the need for a complete redesign, adapting to the installation needs of various models and improving product versatility. The series connection of multiple independent water tanks after modularization significantly increases the total windward heat exchange area of ​​the water-cooling tank. Compared to a single integrated water tank design, each independent water tank has a complete windward and heat dissipation surface. The overall heat exchange area after series connection is several times larger than that of a single water tank, allowing for more thorough contact with the airflow and rapid heat removal from the coolant. This significantly improves the overall heat dissipation efficiency of the water-cooling tank, providing sufficient heat exchange capacity for the water-cooling system to continuously absorb battery heat.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. High integration and good space adaptability: The water cooling system, air cooling module and battery are integrated on the same frame. The four battery pack frames are arranged in a matrix, which is compact and can be precisely adapted to the limited installation space of electric motorcycles, solving the problem of large space occupation of existing heat dissipation systems.

[0023] 2. The water-cooling pipes cover all battery pack frames in a series spiral winding manner. Combined with the tight fit design of the heat sink and the water-cooling pipes, uniform heat dissipation is achieved throughout the battery. The air-cooling module improves heat dissipation efficiency through the front and rear through-flow design, 80-120 degree baffle pressurization and airflow guidance, and streamlined water-cooling box airflow guidance. At the same time, it increases the air intake volume to achieve efficient synergistic heat dissipation of water cooling and air cooling.

[0024] 3. Strong adaptability of structural design: The design of the heat sink with an angle of 100 to 120 degrees, the number of turns of the water cooling pipe, and the angle of the guide plate are all optimized for the driving conditions of electric motorcycles. It can achieve efficient heat dissipation without the need for additional complex control modules, taking into account both practicality and economy. Attached Figure Description

[0025] Figure 1 This is a side view of the present invention; Figure 2 for Figure 1 Enlarged view of a portion of point A in the middle; Figure 3 This is a rear-view axis view of the present invention; Figure 4 for Figure 3 Enlarged view of a section at point B in the middle; Figure 5 This is a front view of the present invention; Figure 6 This is a schematic diagram of the one-way valve structure of the present invention; Figure 7 A schematic diagram of the hydraulic cylinder structure of the invention; Figure 8 This is a schematic diagram of the battery pack structure of the present invention; Figure 9 This is a cross-sectional view of the present invention.

[0026] In the diagram: 1. Frame; 2. Water-cooled pipe; 201. Spiral section; 3. Hydraulic cylinder outlet pipe; 4. Hydraulic cylinder; 5. Battery; 6. Hydraulic cylinder upper rod; 7. One-way valve; 8. Rear dustproof net; 9. Front dustproof net; 10. Heat sink; 11. Air-cooled switch; 12. Water-cooled box; 121. Water tank; 13. Buffer one-way valve; 14. Guide plate; 15. Battery pack frame; 16. Air inlet; 17. Air outlet; 18. Hydraulic cylinder inlet pipe; 19. Piston with perforation; 20. Rubber pad; 21. Rubber pad mounting base; 22. Cylinder body; 23. Hydraulic cylinder outlet; 24. Hydraulic cylinder inlet; 25. Clearance; 26. Mating groove; 27. Windward side. Detailed Implementation

[0027] Please see Figures 1 to 9 This invention provides a lithium battery module for electric motorcycles with heat dissipation management, the technical solution of which is as follows: A lithium battery module for electric motorcycles with heat dissipation management, reference Figures 1 to 9 Includes frame 1, water cooling pipe 2, hydraulic cylinder 4, battery 5, hydraulic cylinder upper rod 6, rear dustproof net 8, heat sink 10, water cooling box 12, buffer check valve 13, guide plate 14, battery pack frame 15, air outlet 17, hydraulic cylinder water inlet pipe 18, perforated piston 19, rubber pad 20, rubber pad fixing seat 21, cylinder body 22, hydraulic cylinder water outlet 23, hydraulic cylinder water inlet 24, and hydraulic cylinder water outlet pipe 3.

[0028] The battery pack frame 15 is used to fix the battery 5. Each battery pack frame 15 is equipped with multiple batteries 5 to form a battery pack. The battery pack frame 15 is fixed to the inside of the frame 1 by welding. The water cooling pipe 2 has a spiral part 201, which is tightly coiled on the battery pack frame 15 in a spiral shape to achieve water cooling heat dissipation for the battery 5. The heat sink 10 is welded to the battery pack frame 15. Two adjacent heat sinks are provided with a gap 25 and a mating groove 26. On the one hand, it achieves air cooling heat dissipation for the battery 5, and on the other hand, it is tightly connected to the water cooling pipe 2, which has the functions of fixing the water cooling pipe 2 and assisting its heat dissipation. In terms of angle design, the included angle of the heat sink 10 of the two adjacent battery pack frames 15 is 114 degrees, and the included angle of the heat sink 10 of the two adjacent battery pack frames 15 perpendicular to the air inlet 16 is 10 degrees. The mating groove 26 is semi-circular, which can increase the contact area with the water cooling pipe 2, improve the heat dissipation effect, and prevent the water cooling pipe 2 from loosening, which would cause the water cooling pipe 2 to be easily damaged by stress fatigue due to vibration. When the airflow is flowing, the air enters from the air inlet 16 and is discharged through the air outlet 17. The airflow velocity is faster at the heat sink 10 perpendicular to the air inlet 16 and slower at the heat sink 10 parallel to the air inlet 16. This can guide the airflow into the middle gap between the two adjacent battery pack frames 15. Hydraulic cylinder 4 consists of cylinder body 22, upper cylinder rod 6, and one-way valve 7. One-way valve 7 is threaded to one end of upper cylinder rod 6. One side of hydraulic cylinder 4 is connected to water cooling pipe 2 via hydraulic cylinder outlet pipe 3, and the other side is connected to water cooling box 12 via hydraulic cylinder inlet pipe 18. Both hydraulic cylinder outlet pipe 3 and hydraulic cylinder inlet pipe 18 are equipped with buffer one-way valves 13. During compression, coolant is squeezed out of cylinder body 22 by the one-way valve 7 on upper cylinder rod 6, and then flows to water cooling pipe 2 via hydraulic cylinder outlet pipe 3 connected to buffer one-way valve 13. The buffer one-way valve 13 located on hydraulic cylinder outlet pipe 3 ensures that coolant can only flow from hydraulic cylinder 4 to water cooling pipe 2, preventing backflow of coolant during this process. During rebound, the one-way valve 7 pressurizes the coolant in the upper cylinder 22 into the lower cylinder 22 via hydraulic means, completing one cycle. A buffer one-way valve 13 is also provided at the connection between the hydraulic cylinder inlet pipe 18 and the water cooling pipe 2, with the direction of flow from the water cooling pipe 2 to the hydraulic cylinder inlet pipe 18, which is also used to prevent the coolant from flowing back, thereby ensuring the heat dissipation of the water cooling system and the air cooling module.

[0029] As one embodiment of the present invention, refer to Figures 1 to 9The front dust filter 9 is made of high-strength, corrosion-resistant metal. Its mesh uses a fine, evenly distributed grid structure, which effectively blocks dust, sand, insects, and other impurities from the air from entering the system without excessively obstructing airflow, ensuring the ventilation required for air cooling. It is welded to the air inlet 16. During riding, air enters through the air inlet 16, providing air cooling for the battery pack and water cooling pipe 2. Figure 3 The diagram also shows the positional relationship between the water-cooled box 12 and the air deflector 14. The two work together to achieve efficient heat dissipation and airflow optimization, adapting to the outdoor riding conditions required for electric motorcycles. The water-cooled box 12 is located behind the front wheel of the electric motorcycle, a core area for smooth airflow. The water-cooled box 12 consists of four water tanks 121, which are connected in series via water-cooling pipes 2 using an S-shaped, circuitous connection. This arrangement maximizes the heat dissipation area, and airflow can also dissipate heat from the water-cooled box 12 during riding. The distributed layout of the four water tanks 121, combined with the S-shaped winding water-cooling pipes 2, greatly extends the flow path of the coolant within the heat dissipation system, while maximizing the contact area between the coolant and the air. Compared to the traditional single water tank 121 structure, the heat dissipation area is significantly increased. During the riding of the electric motorcycle, the forward movement of the vehicle will drive a large amount of natural airflow through this area, forming a continuous forced convection. This airflow can directly act on the windward surface 27 of the four water tanks 121. Through heat exchange between the airflow and the water-cooling tanks 12 and the water-cooling pipes 2, the heat of the internal coolant is quickly removed, achieving passive air-cooled auxiliary heat dissipation. This effectively improves the heat dissipation efficiency of the entire water cooling system and ensures that the coolant is always maintained within a suitable operating temperature range. The deflector 14 is fixed at the air inlet 16 at an angle of 120 degrees. During the riding of the electric motorcycle, the dispersed airflow that flows into the air inlet 16 from different directions can be regulated and directed to flow along the preset heat dissipation channel. The inclined angle design means that when the external airflow flows through the deflector 14, the gradual contraction of the channel cross section will compress the airflow, thereby compressing the air. At the same time, according to the principle of fluid mechanics, the airflow velocity after compression will be significantly increased. Especially when the electric motorcycle is traveling at low speed and the natural airflow is insufficient, the air compression and acceleration effect of the deflector 14 is more critical, which can effectively make up for the heat dissipation shortcomings when traveling at low speed. The design of the water-cooled box 12, which combines multiple water tanks 121, S-shaped pipe connections, and is installed behind the front wheel, works synergistically with the angle setting of the guide plate 14 and the installation design of the air inlet 16. This not only expands the heat dissipation area through structural optimization but also enhances the heat exchange efficiency by guiding and accelerating the airflow. This comprehensively improves the reliability and adaptability of the electric motorcycle's lithium battery cooling system, meets the heat dissipation requirements under different riding conditions, and ensures the cooling of the water-cooled system and the air intake of the air-cooled system.

[0030] As a preferred embodiment of the present invention, refer to Figure 9The air-cooling system layout shown depicts an air-cooling switch 11 with a manually controlled design. Its installation position is located at the front end of the air inlet 16, coaxially corresponding to the airflow channel of the air inlet 16, ensuring that the opening and closing action of the air-cooling switch 11 directly controls the on / off state of the air inlet 16. The core function of this air-cooling switch 11 is to provide rain protection for the air inlet 16 in outdoor use scenarios for electric motorcycles. Its specific structure and working logic are as follows: The air-cooling switch 11 is made of engineering plastic or metal, possessing excellent waterproof sealing performance; the air-cooling switch 11 is a rotating baffle adapted to the cross-sectional shape of the air inlet 16. In actual use, when the electric motorcycle is in a sunny, dry environment with no precipitation, the user can adjust the air-cooling switch 11 to the open state, and the air inlet 16 will be fully open. External cold air can smoothly enter the air-cooling system through the air inlet 16 to provide air-cooling heat dissipation for the battery 5 and ensure the temperature stability of the battery 5 under high load. When encountering rainy, snowy, or road conditions with a lot of water splashing, in order to prevent rainwater from seeping into the air-cooling system through the air inlet 16, the air-cooling switch 11 can be manually adjusted to the closed state. At this time, the air-cooling switch 11 drives the rotating baffle to fit tightly against the sealing surface of the air inlet 16, forming a reliable waterproof sealing structure, completely blocking the rainwater entry channel, effectively preventing the corrosion of air-cooling system components caused by rainwater intrusion, and safety hazards such as damage to the battery 5 due to moisture. In addition, the edge of the air-cooled switch 11 is equipped with an elastic sealing strip to further enhance the waterproof sealing effect when closed, ensuring that rainwater can be effectively blocked even in moderate to heavy rain. At the same time, it ensures the smooth opening and closing of the switch and avoids jamming problems caused by long-term use, providing double protection for the outdoor safety of the air-cooled module and water-cooled system.

[0031] As one embodiment of the present invention, refer to Figure 1 and Figure 6 The one-way valve 7 includes a perforated piston 19, a rubber pad 20, and a rubber pad mounting base 21. When the coolant flows upward, the rubber pad 20 is pushed open under hydraulic pressure, allowing the coolant to flow. When subjected to vertically downward hydraulic pressure, the rubber pad 20 is pushed against the perforated piston 19, preventing the coolant from flowing. The rubber pad mounting base 21 is threadedly connected to the perforated piston 19, and its function is to fix the rubber pad 20 to the perforated piston 19, ensuring that the rubber pad 20 can only undergo elastic deformation in a preset direction under hydraulic pressure, preventing its displacement, detachment, or excessive deformation, thereby ensuring the reliability and service life of the one-way valve 7. The perforated piston 19 is threadedly connected to the upper rod 6 of the hydraulic cylinder.

[0032] The specific embodiments of a lithium battery module for electric motorcycles with heat dissipation management according to the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described above. For those skilled in the art, various changes, modifications, substitutions, and variations made to these embodiments without departing from the principles and ideas of the present invention should still fall within the protection scope of the present invention.

Claims

1. A lithium battery module for electric motorcycles with heat dissipation management, characterized in that, The system includes a frame (1), a water-cooling system, an air-cooling module, and a battery (5). The water-cooling system, air-cooling module, and battery (5) are integrated on the frame (1). The frame (1) contains multiple sets of batteries (5), each set of batteries (5) is mounted on the frame (1) via a battery pack frame (15). The water-cooling system includes a hydraulic cylinder (4), a water-cooling box (12), and a water-cooling pipe (2). The two ends of the hydraulic cylinder (4) are connected to the water-cooling pipe (2) and the water-cooling box (12) respectively via pipes. The water-cooling box (12) is connected to the water-cooling pipe (2) via pipes. The hydraulic cylinder (4), water-cooling box (12), and water-cooling pipe (2) form a closed loop. The hydraulic cylinder (4) contains... The battery pack includes a cylinder body (22), a hydraulic cylinder upper rod (6), a one-way valve (7), and a buffer one-way valve (13). The hydraulic cylinder upper rod (6) is slidably installed inside the cylinder body (22), and a one-way valve (7) is provided on the hydraulic cylinder upper rod (6). A buffer one-way valve (13) is provided on the connecting pipe between the hydraulic cylinder (4) and the water cooling pipe (2) and the water cooling box (12). The air-cooled module includes an air inlet (16), an air outlet (17), and a heat sink (10). The air outlet (17) and the air inlet (16) are located at the front and rear ends of the frame (1). A heat sink (10) is provided on the battery pack frame (15), and the heat sink (10) is in contact with the water cooling pipe (2).

2. The lithium battery module for electric motorcycles with heat dissipation management according to claim 1, characterized in that, The water-cooling pipe (2) has a spiral part (201), which is spirally wound around the outer periphery of the battery pack frame (15) in a series manner and is tightly attached to the outer surface of the battery pack frame (15).

3. A lithium battery module for electric motorcycles with heat dissipation management according to claim 2, characterized in that, The heat sink (10) is mounted on the battery pack frame (15), and there is a reserved installation gap (25) between the heat sinks (10). The water cooling pipe (2) is located inside the installation gap (25). There is a mating groove (26) between the installation gaps (25) that mates with the water cooling pipe (2). The mating groove (26) contacts the water cooling pipe (2) in a semi-circular shape.

4. A lithium battery module for electric motorcycles with heat dissipation management according to claim 3, characterized in that, The heat sink (10) is a rectangular thin plate structure, fixed on the outer surfaces of both sides of the battery pack frame (15). The angle between the heat sinks (10) on two adjacent battery pack frames (15) is 100 to 120 degrees. The heat sinks (10) between two adjacent battery pack frames (15) are inclined, with an inclination angle between 6 and 30 degrees.

5. A lithium battery module for electric motorcycles with heat dissipation management according to claim 1, characterized in that, The water-cooled box (12) is located on the rear side of the front wheel. The water-cooled box (12) has a windward surface (27) with an inclined streamlined design. The air inlet (16) is located below the water-cooled box (12).

6. A lithium battery module for electric motorcycles with heat dissipation management according to claim 5, characterized in that, The air inlet (16) is provided with a front dustproof net (9), and the air inlet (16) is provided with two guide plates (14) and the guide plates (14) are located behind the front dustproof net (9). The included angle between the two guide plates (14) is 80 to 120 degrees.

7. A lithium battery module for electric motorcycles with heat dissipation management according to claim 6, characterized in that, The front end of the frame (1) is provided with a cooling switch (11) on the outer side of the air inlet (16). The cooling switch (11) is detachably fixed to the frame (1) by a buckle (53). The cooling switch (11) is located in front of the front dustproof net (9) and maintains a preset distance from the surface of the front dustproof net (9) so as not to block the ventilation area of ​​the front dustproof net (9).

8. A lithium battery module for electric motorcycles with heat dissipation management according to claim 1, characterized in that, The water-cooled box (12) adopts a modular design. The water-cooled box (12) is composed of multiple independent water tanks (121) with the same structure and appropriate size, connected in series by water-cooling pipes (2).

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