Battery heat dissipation structure of electric motorcycle

Abstract

The utility model relates to a battery radiating structure of an electric motorcycle, which is characterized in that a battery compartment for mounting a battery is arranged in a seat cask of the electric motorcycle, an air inlet communicated with the battery compartment is arranged on the front side wall of the seat cask, and a battery charging port is arranged on the outer side of the seat cask; an air inlet is formed in the left side wall, the right side wall or the rear side wall of the seat cask, an air outlet is formed in the left side wall, the right side wall or the rear side wall of the seat cask, an air guide groove extending from the air inlet to the air outlet is formed in the inner side wall of the seat cask, and when a battery is installed in the battery bin, a heat dissipation air channel from the air inlet to the air outlet along the air guide groove is formed between the seat cask and the battery. According to the utility model, on the premise of reducing the cost and ensuring the endurance, faults caused by overheating of the battery of the electric motorcycle can be prevented.

Description

Technical Field

[0001] The utility model relates to a heat dissipation structure of an electric motorcycle battery, belonging to the technical field of battery thermal management. Background Art

[0002] The electric motorcycle uses a battery to provide electrical energy to the drive motor, and the motor then converts the electrical energy from the power supply into mechanical energy to drive the wheels. The battery of the electric motorcycle is usually located under the pedals.

[0003] However, electric motorcycles have a large vehicle mass and a high speed. Therefore, when riding, the output power of the battery is often very large. Whether lithium batteries or lead-acid batteries are used, the heat generated is relatively large. Especially when accelerating suddenly or going uphill, the heat generated by the battery is more serious. The heat emitted by the battery will be concentrated in the battery compartment, causing battery failure and even battery thermal runaway. Battery thermal runaway may first cause fire and explosion, trigger violent chemical reactions, generate a large amount of heat energy and gas, and cause serious harm to personnel, property and the environment; secondly, battery thermal runaway may cause the release of harmful substances. The electrolyte and other materials may decompose and release harmful gases and toxic substances. These substances pose potential hazards to human health and the environment, and may cause poisoning, respiratory problems and environmental pollution.

[0004] According to the applicant, in order to prevent the battery of the electric motorcycle from overheating and malfunctioning, the current common method is to use liquid cooling to actively dissipate heat from the battery. However, liquid cooling requires the addition of a set of cooling components, which increases production costs. In addition, the cooling components need to be battery-driven, which also affects the battery life of the electric motorcycle. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide a battery heat dissipation structure which can prevent the battery of an electric motorcycle from overheating and causing failure under the premise of reducing costs and ensuring endurance.

[0006] In order to solve the above technical problems, the utility model proposes the following solution: a battery heat dissipation structure for an electric motorcycle, wherein a battery compartment for installing a battery is provided in a seat barrel of the electric motorcycle, an air inlet connected to the battery compartment is provided on the front side wall of the seat barrel, and a battery charging port is provided on the outer side of the seat barrel; an air outlet is provided on the left side wall, the right side wall or the rear side wall of the seat barrel, and an air guide groove extending from the air inlet to the air outlet is provided on the inner side wall of the seat barrel; when a battery is installed in the battery compartment, a heat dissipation air duct from the air inlet along the air guide groove to the air outlet is formed between the seat barrel and the battery.

[0007] The utility model places the battery of the electric motorcycle in the seat bucket under the seat, and forms a heat dissipation duct in the seat bucket battery. In this way, when the electric motorcycle is riding, air enters the battery compartment from the air inlet and flows along the air guide groove, so that the heat emitted by the battery is discharged from the air outlet. The greater the output power of the battery and the faster the riding speed, the faster the air flows and the higher the heat dissipation efficiency is. Therefore, it is effectively avoided that the heat emitted by the battery is concentrated in the battery compartment to cause the battery to overheat and malfunction.

[0008] The battery heat dissipation structure of the utility model does not require the battery to provide power, but adopts passive heat dissipation. When driving, only the air flowing along the heat dissipation duct is used to contact the battery to take away the heat for heat dissipation. It not only does not consume the energy stored in the battery, but also reduces wind resistance, thereby improving the endurance of the electric motorcycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of the first embodiment of the utility model.

[0010] Figure 2 This is a schematic diagram of the installation of the center cover.

[0011] Figure 3 This is a schematic diagram of the interior of the seat bucket.

[0012] Figure 4 It is a structural schematic diagram of the second embodiment of the present utility model.

[0013] Figure 5 This is a diagram of installing the battery.

[0014] Figure numerals: 1. seat bucket; 2. battery compartment; 3. air inlet; 4. battery charging port; 5. air outlet; 6. battery; 7. air guide slot; 8. air inlet hollow window; 9. air outlet hollow window; 10. center cover plate; 11. mud guard plate. DETAILED DESCRIPTION

[0015] First of all, it should be noted that, in the present invention, “front” refers to the direction toward the front of the electric motorcycle, and “rear” refers to the direction toward the rear of the electric motorcycle.

[0016] Embodiment 1

[0017] This embodiment relates to an electric motorcycle battery heat dissipation structure, such as Figure 1-Figure 3 and Figure 5As shown, a battery compartment 2 for installing batteries is provided in the seat bucket 1 of the electric motorcycle, an air inlet 3 connected to the battery compartment 2 is provided on the front side wall of the seat bucket 1, and a battery charging port 4 is provided on the outer side of the seat bucket 1. The seat bucket 1 of the electric motorcycle is fixed on the frame and is located below the seat, and its internal space is relatively large. Therefore, in this embodiment, a part of the seat bucket is divided out to be used as the battery compartment 2, and the battery is locked in the battery compartment 2 inside the seat bucket to reduce the possibility of the battery shaking in the seat bucket.

[0018] In order to dissipate heat for the battery 6, an air outlet 5 is provided on the left side wall, the right side wall or the rear side wall of the seat bucket 1, and an air guide groove 7 extending from the air inlet 3 to the air outlet 5 is provided on the inner side wall of the seat bucket 1. When the battery 6 is installed in the battery compartment 2, a heat dissipation air duct from the air inlet 3 along the air guide groove 7 to the air outlet 5 is formed between the seat bucket 1 and the battery. When the electric motorcycle is riding, air enters the battery compartment 2 from the air inlet 3, flows along the air guide groove 7, and discharges the heat emitted by the battery from the air outlet 5, thereby effectively dissipating heat for the battery 6 and avoiding battery overheating and malfunction.

[0019] It is worth mentioning that the heat dissipation duct reduces the wind resistance of the electric motorcycle when riding, which is beneficial to improving the cruising range of the electric motorcycle. In addition, the air guide groove 7 is similar to the reinforcing ribs arranged on the side wall of the seat bucket 1, which helps to improve the strength of the seat bucket 1.

[0020] Preferably, the battery compartment 2 has multiple battery compartments 2 distributed along the front-to-back direction of the seat bucket 1, which can increase the cruising range of the electric motorcycle. Furthermore, the air inlet 3, the air outlet 5 and the air guide groove 7 are all provided in multiple numbers along the upper and lower directions of the seat bucket 1, thereby forming multiple heat dissipation ducts, thereby improving the heat dissipation effect.

[0021] This embodiment can also be improved as follows: Figure 2 and Figure 3 As shown, a center cover plate 10 is installed in front of the seat bucket 1. The center cover plate 10 is located below the vehicle seat and protects the seat bucket 1. The center cover plate 10 is provided with an air inlet hollow window 8 corresponding to the air inlet 3, so that the air inlet is not affected even if the center cover plate 10 is added. Further, in order to facilitate charging and replacing the battery charging port, preferably, the battery charging port 4 is provided on the center cover plate 10.

[0022] Embodiment 2

[0023] This embodiment is an improvement on the first embodiment, and its improvement is: Figure 4 and Figure 5As shown, a mud guard 11 is installed on the outer side of the rear of the seat bucket 1 to prevent mud, water vapor, etc. splashed by the wheels from polluting the vehicle body and pedestrians and protect the wheels from external damage. The mud guard 11 is provided with an air outlet hollow window 9 corresponding to the air outlet 5. At this time, part of the air flowing out of the air outlet flows out through the air outlet hollow window 9, and the mud guard 11 will not affect the heat dissipation of the battery.

Claims

1. An electric motorcycle battery heat dissipation structure, characterized in that: A battery compartment for installing batteries is provided in the seat barrel of the electric motorcycle, an air inlet connected to the battery compartment is provided on the front side wall of the seat barrel, and a battery charging port is provided on the outer side of the seat barrel; an air outlet is provided on the left side wall, the right side wall or the rear side wall of the seat barrel, and an air guide groove extending from the air inlet to the air outlet is provided on the inner side wall of the seat barrel. When batteries are installed in the battery compartment, a heat dissipation air duct is formed between the seat barrel and the batteries from the air inlet along the air guide groove to the air outlet.

2. The electric motorcycle battery heat dissipation structure according to claim 1, characterized in that: A central cover plate is installed in front of the seat bucket, and an air inlet hollow window corresponding to the air inlet is provided on the central cover plate.

3. The electric motorcycle battery heat dissipation structure according to claim 2, characterized in that: The battery charging port is arranged on the center cover plate.

4. The electric motorcycle battery heat dissipation structure according to claim 1, characterized in that: A mud and dirt guard is installed on the rear outer side of the seat bucket, and an air outlet hollow window corresponding to the air outlet is provided on the mud and dirt guard.

5. The electric motorcycle battery heat dissipation structure according to any one of claims 1 to 4, characterized in that: There are multiple battery compartments distributed along the front-to-back direction of the seat barrel.

6. The electric motorcycle battery heat dissipation structure according to any one of claims 1 to 4, characterized in that: The air inlet, the air outlet and the air guide groove are all provided in multiple numbers along the up-down direction of the seat bucket, thereby forming multiple heat dissipation air ducts.

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