Electric vehicle with heat dissipation frame

Abstract

To provide a heat dissipation frame and an electric vehicle having the heat dissipation frame, which can realize rapid heat dissipation by efficiently removing the heat dissipation amount of a main battery and a control module with an intake airflow when the wind volume is large and the wind speed is fast during running. [Solution] The electric vehicle includes a main battery (1001) and a heat dissipation frame, the heat dissipation frame including a frame lower pipe (103), the main battery being disposed within the frame lower pipe, the front end of the frame lower pipe being provided with a forward-facing air intake port and the rear end being provided with a rear-facing air exhaust port to allow air to cool and dissipate heat from the main battery. In this device, the frame lower pipe on which the main battery is mounted is configured with openings at the front and rear, allowing a frontal airflow to be introduced into the frame cavity on which the main battery is mounted.

Description

[Technical Field]

[0001] The present invention relates to the field of electric vehicles, and more particularly to electric vehicles with heat dissipation frames. [Background technology]

[0002] Electric vehicles are becoming more and more widely used as environmentally friendly vehicles. The batteries of conventional electric vehicles are usually attached to the frame pipes of the electric vehicle.

[0003] Because batteries provide the power for electric vehicles to run, the batteries and control modules generate a large amount of heat during operation. If the heat is trapped inside the frame pipe, it cannot be dissipated, causing the battery temperature to become too high, which can easily pose hidden risks to quality and safety.

[0004] Therefore, when a battery is installed, it is necessary to improve the frame pipe of the existing electric vehicle to protect the battery and control module and increase the safety factor so as to achieve good heat dissipation purposes. Summary of the Invention

[0005] SUMMARY OF THE INVENTION The present invention aims to provide a heat dissipation frame and an electric vehicle having the heat dissipation frame.

[0006] In order to solve the above technical problems, the present invention further provides an electric vehicle with a heat dissipation frame.

[0007] An electric vehicle having a heat dissipation frame including a main battery and a heat dissipation frame, the heat dissipation frame including a frame lower pipe, the main battery being disposed within the cavity of the frame lower pipe, the frame lower pipe having an air intake opening facing forward at its front end and an air exhaust opening facing rearward at its rear end so as to air-cool the main battery and dissipate heat.

[0008] The beneficial effect of this device is that by installing the lower pipe of the frame that mounts the main battery so that it opens at the front and rear, a frontal airflow is introduced into the cavity of the frame that mounts the main battery. When the wind volume is large and the wind speed is fast during driving, the intake airflow can efficiently carry away the heat dissipated by the main battery and control module, thereby achieving rapid heat dissipation. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a structural schematic diagram of a specific embodiment of an electric vehicle provided by the present invention; [Figure 2] FIG. 2 is a front view of the electric vehicle heat dissipation frame in FIG. [Figure 3] FIG. 2 is a structural schematic diagram of the heat dissipation frame in FIG. [Figure 4] FIG. 2 is a partial cross-sectional view of a frame lower pipe in FIG. [Figure 5] 2 is a structural schematic diagram of a branching position of the internal air guide structure of the frame lower pipe in FIG. 1. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0010] In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be described in more detail below with reference to the accompanying drawings and specific embodiments.

[0011] 1, the electric vehicle in this embodiment is an electric bicycle equipped with a heat dissipation frame, i.e., this frame 1 has a heat dissipation function, which will be specifically described below. The frame 1 is a main frame located approximately in the center of the vehicle body, and is connected to the front fork of a front wheel 4 and the rear fork 2 of a rear wheel 5 at the front and rear, respectively. A seat 6 for a rider is provided above the frame 1, a steering assembly 3 is provided in front of the frame 1, a front fork damper 401 is provided on the front fork, a rear fork damper 9 is provided at the location where the rear fork 2 is located, and a protective cover 205 for the rear fork damper 9 is provided.

[0012] One end of the rear fork damper 9 is attached to the damper mounting groove frame 105 at the rear end of the frame center pillar 101 via a first fixed shaft 903 and a first bearing pad 901, and the other end is attached to the rear fork 2 via a second fixed shaft 904 and a second bearing pad 902. A transmission fixing hole 208 is provided at the rear lower end of the rear fork 2, and the rear fork 2 is connected to the axle of the rear wheel 5 via a rear axle locking groove 207, and a rear ramp belt 206 is provided on the rear fork 2.

[0013] A typical frame 1 generally includes a frame upper pipe 101, a frame lower pipe 103, and a frame center pillar 102 (usually also a tubular hollow structure). Of course, the heat dissipation frame does not exclude the adoption of other types of body frame structures.

[0014] The power source of the electric vehicle is a main battery 1001, and the heat dissipation frame includes a frame lower pipe 103 (also called a main battery frame pipe) for mounting the main battery 1001. A spare battery 1003 is provided in the inner cavity of the frame center pillar 102, and can continue to drive the electric vehicle as a power source when the main battery 1001 runs out of power. An accessory battery 1002 that supplies power to on-board equipment may also be provided within the frame upper pipe 101, and the on-board equipment may be, for example, a display, a lamp, a charging interface, etc.

[0015] The main battery 1001, the spare battery 1003, and the accessory battery 1002 may all be battery packs. The main battery 1001 and the spare battery 1003 can both supply power to a rear wheel motor generator 201 and a front wheel motor generator 402 of the electric vehicle, and a front wheel brake system 403 and a rear wheel brake system 202 are provided on the front wheels 4 and the rear wheels 5, respectively.

[0016] The electric vehicle may be provided with a speed-changing structure such as a speed-changing driven gear 8 shown in FIG. 1, and a footrest and a speed-changing drive gear 7 are provided at the lower end of the frame 1.

[0017] In this device, the front end of the main battery frame pipe is provided with an air intake 1043 facing forward, and the rear end is provided with an air exhaust 1044 facing rearward. The installation of the air intake 1043 and the air exhaust 1044 forms a tubular structure through which the main battery frame pipe passes, and its inner cavity forms a gas flow path, i.e., the heat dissipation airway 104 described below. In this text, "front" refers to the direction toward normal driving, and "rear" refers to the opposite direction.

[0018] Specifically, in this embodiment, an air intake port 1043 and an air exhaust port 1044 are provided at the front and rear of the frame lower pipe 103, respectively, and the air intake port 1043 and the air exhaust port 1044 are actually the front and rear ports of the heat dissipation airway 104. The airflow from the front of the electric vehicle (i.e., the wind from the front) can enter the inner cavity of the frame lower pipe 103 through the air intake port 1043 and exit through the air exhaust port 1044, and the intake air can cool the main battery 1001 in the inner cavity of the frame lower pipe 103 and dissipate heat. In addition to the main battery 1001, a control module 1004 is generally also provided at the mounting position of the main battery 1001, and the control module 1004 also generates a large amount of heat, so the intake airflow can serve to cool the main battery 1001 and the control module 1004 simultaneously.

[0019] 1 is opened facing the wind and tilted slightly backward, which increases the amount of intake air. Also, the lower edge of the air intake 1043 is designed to be tangent to the outer diameter circle of the front wheel 4, which satisfies the demand for intake air volume and also reduces the amount of impurities such as rainwater and soil that enter the heat dissipation airway 104 through the air intake 1043.

[0020] This solution installs the main battery frame pipe that mounts the main battery 1001 so that it opens at the front and rear, allowing a frontal airflow to be introduced into the cavity of the frame 1 that mounts the main battery 1001. When the wind volume is large and the wind speed is fast during driving, the intake airflow can efficiently carry away the heat dissipated by the main battery 1001 and the control module 1004, thereby realizing rapid heat dissipation.

[0021] 2, the frame lower pipe 103 is provided with an airflow guide structure 111 that is inserted into its inner cavity to guide the intake airflow rearward, and the airflow guide structure 111 extends from the wind front of the frame 1 toward the inner cavity of the frame lower pipe 103 (i.e., the heat dissipation airway 104), and extends at least to the front end position of the main battery 1001. In this embodiment, the airflow guide structure 111 extends directly to the position of the air exhaust port 1044.

[0022] The upper frame pipe 101 of the heat dissipation frame is often connected to the front end of the lower frame pipe 103 to form a vertical pillar 10a structure. In this case, the front end surface of the vertical pillar 10a is the windward side of the frame 1. The vertical pillar 10a and the airflow guide structure 111 are an integrated structure, and the vertical pillar 10a is not a perfect cylinder. The cross section after connecting with the airflow guide structure 111 is shaped like a tadpole, extending rearward to form the airflow guide structure 111, which is inserted into the inner cavity of the lower frame pipe 103. At its front end, the airflow guide structure 111 has a single vertical pillar structure 111c extending from the top to the bottom of the lower frame pipe 103. In the longitudinal direction, the airflow guide structure 111 branches off from the front end of the main battery mounting groove 107 to form two airflow dividing plates 111a. The chamber between the two airflow dividing plates 111a forms the main battery mounting groove 107.

[0023] In this solution, the upright pillar 10a is not a cylindrical structure but extends rearward to form a guiding structure 111. After the airflow on both sides of the upright pillar 10a passes through the front half of the cylinder, it is divided by the guiding structure 111 and cannot merge to form a vortex, but tends to continue flowing rearward, allowing the airflow to flow smoothly through the heat dissipation airway 104 and further improving the natural air cooling heat dissipation effect.

[0024] It can be seen that if the airflow guide structure 111 extends to the front end of the main battery 1001, it can achieve a certain degree of airflow division and guide the airflow rearward for air cooling. The airflow guide structure 111 is located at the front single-pillar structure 111c (the position of the airflow guide structure 111 shown in Figure 2), and its cross section is approximately an inverted triangle, larger at the top and smaller at the bottom, with both sides having a streamlined, inward-converging design. As mentioned above, the single-pillar structure 111c has a bow shape, which helps guide the air rearward and reduces flow resistance.

[0025] In this embodiment, the design is further optimized. The front section of the airflow guide structure 111 is a single-post structure 111c, which divides the airflow. The rear section is a branched design, with airflow dividers 111a on both sides, further dividing the airflow. This branched design also allows the rearward airflow to adhere closely to the surface of the airflow divider plate 111a, allowing the airflow to pass through more quickly and dissipate heat more quickly. Looking down, the airflow guide structure 111 has a roughly Y-shape. A baffle 107a is formed at the branching point to facilitate front-end alignment of the main battery 1001. As shown in FIG. 4, the single-post structure 111c in this case is equivalent to a hollow structure, and the baffle 107a can be integrally formed with the single-post structure 111c and the airflow divider plate 111a.

[0026] Furthermore, by installing the flow dividing plate 111a, the heat dissipation airway 104 of the inner cavity of the frame lower pipe 103 is actually divided into two, as shown in Figure 4, the first heat dissipation airway 1041 and the second heat dissipation airway 1042, and the two airways are formed between the flow dividing plate 111a and the pipe wall of the frame lower pipe 103.

[0027] In this case, the two diverting plates 111a into which the flow guide structure 111 branches may be provided with diverting plate heat dissipation holes 108. As shown in Figures 4 and 5, the diverting plate 111a has the diverting plate heat dissipation holes 108, which extend essentially from top to bottom on the surface of the diverting plate 111a, increasing the diverting plate heat dissipation area. When air flows rapidly through the surface of the diverting plate 111a, negative pressure can be generated at the diverting plate heat dissipation holes 108, which can more quickly carry away heat dissipated from the main battery 1001 or the control module 1004 and improve the cooling effect.

[0028] The airflow guide structure 111 branches into two airflow diverting plates 111a at the rear, forming a main battery mounting groove 107 between the two airflow diverting plates 111a. In this embodiment, the bottoms of the two airflow diverting plates 111a are connected, and the airflow diverting plates 111a expand outward in cross section, forming a shape similar to the bottom of a yacht. This is more in line with the principles of fluid dynamics, allowing airflow to better adhere to the surface of the airflow diverting plates 111a and dissipate heat. The airflow diverting plates 111a expand outward from the bottom and then retract upward, forming a shield-like cross section. Accordingly, the side walls of the frame lower pipe 103 corresponding to this position also have a similar structural design, but with smoother surfaces and elongated cross sections. These shield-shaped airflow diverting plates 111a form the first and second heat dissipation airways 104, allowing for rapid airflow conduction.

[0029] 4, the bottoms of the flow diverting plates 111a on both sides of the rear section of the air guide structure 111 are connected, forming a substantially Y-shaped cross section of the entire rear section. The bottoms form a long ridge-like structure extending in the longitudinal direction of the frame lower pipe 103. The long ridge-like structure is connected to the inner bottom wall of the frame lower pipe 103, and the cross section of the long ridge-like structure itself is substantially triangular. As mentioned above, the rear section of the air guide structure 111 is designed with a wide top and narrow bottom, which helps to ensure tight airflow. Furthermore, if water enters the heat dissipation airway 104 through the air intake 1043, this structure is also advantageous for draining it.

[0030] As a whole, the entire flow guide structure 111 has a boat shape, the single pillar structure 111c is designed to have a bow shape, the flow divider plates 111a on both sides have a hull shape, and the bottom has a ship's bottom shape.

[0031] In addition, a scanning line slot 111b extending in the longitudinal direction can be opened on the long ridge structure, and the electric wire can be buried in the scanning line slot 111b, thereby achieving the purpose of hiding the scanning line and beautifying the appearance of the vehicle body.

[0032] An automatic fire extinguishing device 1072 may also be installed on the frame lower pipe 103 of this configuration, as shown in Figures 3 and 4. The automatic fire extinguishing device 1072 includes a gas cylinder, which may be a collision-resistant high-pressure steel gas cylinder that, when turned on, releases a fire extinguishing substance into the frame lower pipe 103 to extinguish the fire source and provide timely protection. The fire extinguishing substance may be carbon dioxide or other inert gas, which can quickly fill the frame lower pipe 103, creating an oxygen-free environment and quickly extinguishing the fire.

[0033] A flame sensor is installed inside the control module 1004. If the main battery 1001, control module 1004, and related components become hot and spontaneously combust due to factors such as force majeure, failure to replace due to natural aging, or improper use, the flame sensor will be triggered to activate an automatic fire extinguishing device and release fire extinguishing gas.

[0034] Although the above embodiment has been described with reference to an electric bicycle, it is clear that the above design can be adopted for an electric vehicle having the same type of frame, such as an electric motorcycle.

Claims

1. An electric vehicle having a heat dissipation frame that includes a main battery (1001) and a heat dissipation frame, the heat dissipation frame including a frame lower pipe (103), the main battery (1001) being disposed in the inner cavity of the frame lower pipe (103), the front end of the frame lower pipe (103) being provided with a forward-facing air intake port (1043) and the rear end being provided with a rearward-facing air exhaust port (1044) so ​​as to air-cool and dissipate heat from the main battery (1001).

2. The electric vehicle with a heat dissipation frame according to claim 1, wherein the heat dissipation frame further comprises a frame upper pipe (101) and a frame center pillar (102).

3. 3. An electric vehicle having a heat dissipation frame according to claim 2, wherein both sides of the frame upper pipe (101) are inclined from top to bottom toward the middle, forming a first upper pipe flow guide surface that pressurizes the front wind and guides it rearward, and the rear end of the frame upper pipe (101) is expanded outward to form a second upper pipe flow guide surface that guides the wind downward.

4. An electric vehicle having a heat dissipation frame as described in claim 3, characterized in that an upper pipe intake port (1011) facing forward is provided at the front end of the frame upper pipe (101), and an upper pipe exhaust port (1012) is provided at the position of the second upper pipe flow guide surface.

5. 2. The electric vehicle having a heat dissipation frame according to claim 1, wherein the frame upper pipe (101) and the frame lower pipe (103) form a pillar (10a) at a forward connection position, and the inner cavity of the frame lower pipe (103) is provided with a guide structure (111) that extends from the rear end of the pillar (10a) toward the inner cavity of the frame lower pipe (103) and extends at least to the front end position of the main battery (1001).

6. 6. The electric vehicle with a heat dissipation frame according to claim 5, wherein the flow guide structure (111) includes a single-pillar structure (111c) located at the front stage and two flow dividing plates (111a) branching off from the rear end of the single-pillar structure (111c), and the main battery (1001) is located between the two flow dividing plates (111a).

7. The electric vehicle having a heat dissipation frame according to claim 6, characterized in that the two flow dividing plates (111a) are connected at their bottoms, and the bottoms form a long ridge-like structure in which scanning line long holes (111b) extending along their longitudinal direction are opened.

8. 7. The electric vehicle with a heat dissipation frame according to claim 6, wherein the guide structure (111) is configured in a boat shape, the flow divider plates (111a) on both sides first expand outward from the bottom and then retract inward and extend upward, and the single-pillar structure (111c) is configured in a bow shape.

9. 7. The electric vehicle with a heat dissipation frame according to claim 6, wherein the airflow dividing plate (111a) is provided with airflow dividing plate heat dissipation holes (108), the outer wall of the casing of the main battery (1001) is provided with battery heat dissipation holes (1001a), the battery heat dissipation holes (1001a) and the airflow dividing plate heat dissipation holes (108) are inclined from the inside to the outside and inclined toward the intake air flow direction inside the frame lower pipe (103), and the battery heat dissipation holes (1001a) and the airflow dividing plate heat dissipation holes (108) are positioned in correspondence to each other to form a gas flow path inclined from the inside to the outside.

10. 10. The electric vehicle with a heat dissipation frame according to claim 9, further comprising an automatic fire extinguishing device (1072), wherein the single-pillar structure (111c) is a hollow structure, the automatic fire extinguishing device (1072) is provided within the single-pillar structure (111c), and the control module (1004) of the main battery (1001) controls opening and closing of the automatic fire extinguishing device (1072), which is provided with a flame sensor and can inject a fire extinguishing substance into the inner cavity of the frame lower pipe (103).

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