Automobile driven by drive-by-wire driving motor

Abstract

The utility model discloses an automobile driven by a drive-by-wire driving motor, which comprises a whole automobile controller, an automobile frame, wheels for supporting the automobile frame, a driving motor for driving the wheels to walk, an unmanned driving system and a motor controller, the unmanned driving system is electrically connected with the whole automobile controller, and the motor controller is electrically connected with the automobile frame. The vehicle control unit is electrically connected with the motor controller, and the motor controller is electrically connected with the driving motor; the vehicle control unit is used for sending vehicle advancing, retreating and vehicle speed signals transmitted by the unmanned driving system to the brake motor controller, and the motor controller controls the forward direction, the reverse direction and the rotating speed of the driving motor according to the advancing, retreating and vehicle speed signals transmitted by the vehicle control unit. The utility model aims to provide the automobile driven by the drive-by-wire driving motor, which can meet the requirement of unmanned driving, and solves the problem that the requirement of unmanned driving cannot be met by controlling the channel motor by manually stepping on the accelerator pedal.

Description

Technical Field

[0001] The utility model relates to an automobile, in particular to an automobile driven by a wire-controlled drive motor. Background Art

[0002] The driving of existing electric vehicles also adopts a throttle pedal drive: the motor controller receives the signals of the throttle pedal and the gear switch, and transmits the signals to the drive motor to work, so as to achieve the purpose of driving the vehicle. This control method cannot be used for driverless vehicles.

[0003] In addition, the drive motor of existing electric vehicles is cooled by setting a cooling fan in the same way as the existing motor cooling method. This cooling method cannot utilize the wind generated by the vehicle running for cooling.

[0004] In addition, for the convenience of operation and energy conservation, electric vehicles have been designed. The on-vehicle battery serves as the power source of the electric vehicle, and most high-power and long-endurance batteries adopt series or parallel battery packs. In the prior art, there is a setting form in which the batteries are arranged on both sides of the chassis to achieve air cooling, such as a new pure electric logistics vehicle frame authorized and announced on June 5, 2018 with the patent number CN201721550791.0; it includes a high-voltage distribution box, a three-in-one controller, a chassis assembly, an electric air compressor, an air-conditioning compressor, a motor controller, a power assembly, a PTC water heater, a cooling water pump, an electric brake oil pump, and a battery frame system; the electric air compressor, the air-conditioning compressor, the electric brake oil pump, the PTC water heater, and the cooling water pump are arranged below the cab and inside the chassis assembly, and are integrated on the front-end bracket; the high-voltage distribution box, the three-in-one controller, and the motor controller are arranged in three layers on the rear combined bracket; the power assembly is fixed inside the chassis assembly; the battery frame system is connected to the ventral surface of the chassis assembly; an attempt is made to achieve battery air cooling through the external placement of the battery pack. However, the greater the battery power, the greater the heat generated. During long-term operation, there are problems such as excessive temperature and easy scalding. Obviously, a dedicated cooling system needs to be equipped for the battery pack. However, in the prior art, the cooling method of the battery pack is usually an independently arranged air-cooling system, such as a pure electric logistics vehicle cooling device authorized and announced on November 20, 2018 with the patent number CN201820428145.5, which relates to the field of electric vehicle battery cooling. It includes a square ventilation pipe, a battery box body, and a group of heat dissipation cylinders. One end of the exhaust port of the square ventilation pipe is provided with a fan, the bottom of the square ventilation pipe is provided with a battery box body installation hole, the bottom of the battery box body is movably provided with a cover body, the battery box body is respectively provided with a plurality of battery pack installation grooves and a plurality of heat dissipation channels, the plurality of battery pack installation grooves and the plurality of heat dissipation channels are arranged alternately, the top opening of the heat dissipation cylinder is provided with a gas guiding elbow, and the bottom opening of the heat dissipation cylinder is provided with an arc-shaped flow guiding plate. The deficiencies in the prior art are that a dedicated heat dissipation system is required to correspond to the battery pack, with high energy consumption; the air-cooling form of the battery pack requires a dedicated housing setting to protect the battery pack, resulting in a large structural occupation; the battery pack is easily damaged by collision, and the anti-collision reliability of the battery pack is a topic that must be considered, making the technical difficulty of setting the battery pack large. Summary of the Invention

[0005] The first object of the present invention is to provide a vehicle driven by a by-wire drive motor that can meet the needs of driverless driving, and solves the problem that the manual control of the motor by stepping on the accelerator pedal cannot meet the requirements of driverless driving.

[0006] The second object of the present invention is to further provide a vehicle driven by a by-wire drive motor that can utilize the wind generated by the vehicle's running to dissipate heat from the drive motor, and solves the problem of heat dissipation of the drive motor.

[0007] The above technical problems are solved by the following technical solutions: A vehicle driven by a wire-controlled drive motor includes a vehicle controller, a vehicle frame, wheels supporting the vehicle frame, and a drive motor for driving the wheels to travel. It is characterized in that it further includes an unmanned driving system and a motor controller. The unmanned driving system is electrically connected to the vehicle controller, the vehicle controller is electrically connected to the motor controller, and the motor controller is electrically connected to the drive motor. The vehicle controller is used to send the signals of vehicle forward, backward, and vehicle speed sent by the unmanned driving system to the brake motor controller, and the motor controller controls the forward and reverse rotation and speed of the drive motor according to the forward, backward, and vehicle speed signals sent by the vehicle controller.

[0008] Preferably, it further includes a drive motor for driving the driving wheels to rotate. A heat dissipation sleeve is sleeved on the drive motor. A partition is provided in the heat dissipation sleeve. The heat dissipation sleeve is provided with an air inlet channel and an air outlet channel. The air inlet channel is used to introduce air into the heat dissipation sleeve when the vehicle is traveling. The air introduced by the air inlet channel flows out from the air outlet channel after passing through the heat dissipation sleeve. The air inlet channel and the air outlet channel are distributed at both circumferential ends of the drive motor and are located on both sides of the partition. The included angle between the air inlet channel and the air outlet channel is more than 330°. When the vehicle is traveling, the air flow enters the heat dissipation sleeve through the air inlet channel and then flows out from the kitchen channel, thereby realizing the heat dissipation of the drive motor. The heat dissipation effect is good.

[0009] Preferably, the opening direction of the inlet end of the air inlet channel is downward. The rear side wall of the air inlet channel extends downward beyond the front side wall of the air inlet channel. The rear side wall of the air inlet channel is inclined with the lower end facing forward. The part of the air horizontally shooting at the rear side wall of the air inlet channel that extends beyond the front side wall of the air inlet channel is reflected onto the inner surface of the front side wall of the air inlet channel. It can enable the air flow to fully enter the heat dissipation sleeve to dissipate heat from the motor when the vehicle is traveling.

[0010] Preferably, the opening area of the air inlet channel gradually increases from the inlet end to the outlet end. The air intake and heat dissipation effect is good.

[0011] Preferably, the inner circumferential surface of the heat dissipation sleeve is a cylindrical surface coaxial with the drive motor, and the directionality of the outlet end of the air inlet channel is tangent to the inner surface of the heat dissipation sleeve. The flow resistance during entry is small.

[0012] Preferably, the opening direction of the outlet end of the air outlet channel is backward. The flowing-out air can play a role in assisting the vehicle to travel and reduce the increase in vehicle load caused by air intake.

[0013] Preferably, a brake cover is provided at the rear end of the frame. The front surface of the brake cover is concave and the rear surface is convex. The brake cover is connected to the frame by a horizontally telescopic electric cylinder. When braking, the electric cylinder moves the brake cover backward by a set distance, creating an air inlet gap between the brake cover and the rear end of the frame. During driving, the electric cylinder contracts, causing the front end of the brake cover to fit against the rear end of the frame, which can improve the braking effect of the vehicle.

[0014] Preferably, it further includes a sliding sleeve connected to the frame and a guiding rod extending in the front-rear direction with one end passing through the sliding sleeve. The other end of the guiding rod is fixed to the brake cover, which can prevent the brake cover from rotating.

[0015] Preferably, an air outlet hole is provided at the center of the brake cover. When the front end of the brake cover fits against the rear end of the frame, the outlet end of the air outlet channel passes through the air outlet hole. When braking, the outlet end of the air outlet channel is located on the front side of the brake cover and inside the brake cover. When braking, the drive motor rotates in reverse to assist in braking, which can enable the heat dissipation airflow to flow out better and faster during braking, thereby improving the heat dissipation effect.

[0016] The utility model has the following beneficial effects: It can control the drive motor without manual operation, improve the battery cooling efficiency, eliminate the need for a dedicated cooling source for the battery, protect the battery pack, enable the battery pack to be directly applied without external packaging, realize the integration of the battery pack housing and the heat dissipation structure on the vehicle body, and has a good heat dissipation effect on the drive motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structure schematic diagram of Embodiment 1 of the utility model;

[0018] Figure 2 is Figure 1 a partial enlarged schematic diagram of the A position of

[0019] Figure 3 is the state of the brake cover when the vehicle is driving in Embodiment 2;

[0020] Figure 4 is the state of the brake cover when the vehicle brakes.

[0021] In the figure: frame 13, front wheel 20, rear wheel 21, motor controller 22, drive motor 35, heat dissipation sleeve 36, partition 37, air inlet channel 38, air outlet channel 39, rear side wall 40 of the air inlet channel, front side wall 41 of the air inlet channel, part 42 of the rear side wall of the air inlet channel exceeding the front side wall of the air inlet channel, brake cover 43, rear surface 44 of the brake cover, electric cylinder 45, air inlet gap 46, sliding sleeve 47, guiding rod 48, air outlet hole 49. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] Example 1, see Figure 1 and Figure 2 , a vehicle driven by a wire-controlled drive motor, including a vehicle controller, a vehicle frame 13, wheels supporting the vehicle frame, and a drive motor 35 for driving the vehicle to move. The wheels include front wheels 20 and rear wheels 21. It also includes an unmanned driving system and a motor controller 22. The unmanned driving system is electrically connected to the vehicle controller, the vehicle controller is electrically connected to the motor controller, and the motor controller is electrically connected to the drive motor. The vehicle controller is used to send the signals of the vehicle moving forward, backward, and vehicle speed sent by the unmanned driving system to the brake motor controller, and the motor controller controls the forward and reverse rotation and speed of the drive motor according to the signals of moving forward, backward, and vehicle speed sent by the vehicle controller.

[0024] The difference between Example 2 and Example 1 is as follows:

[0025] As Figure 3 and Figure 4, a heat dissipation sleeve 36 is sleeved on the drive motor. The heat dissipation sleeve is a heat-conducting structure. A partition 37 is arranged inside the heat dissipation sleeve. The heat dissipation sleeve is provided with an air inlet channel 38 and an air outlet channel 39. The air inlet channel is used to introduce air into the heat dissipation sleeve when the vehicle is moving. The air introduced by the air inlet channel flows out from the air outlet channel after passing through the heat dissipation sleeve. The air inlet channel and the air outlet channel are distributed at the circumferential two ends of the drive motor and are located on both sides of the partition. The included angle between the air inlet channel and the air outlet channel is more than 330°. The opening direction of the inlet end of the air inlet channel faces downward. The rear side wall 40 of the air inlet channel extends downward beyond the front side wall 41 of the air inlet channel. The rear side wall of the air inlet channel is inclined in a state where the lower end faces forward. The part 42 of the air horizontally shot at the rear side wall of the air inlet channel and extending beyond the front side wall of the air inlet channel is reflected onto the inner surface of the front side wall of the air inlet channel. The opening area of the air inlet channel gradually increases from the inlet end to the outlet end. The inner circumferential surface of the heat dissipation sleeve is a cylindrical surface coaxial with the drive motor. The directivity of the outlet end of the air inlet channel is tangent to the inner surface of the heat dissipation sleeve. The opening direction of the outlet end of the air outlet channel faces backward. A brake cover 43 is arranged at the rear end of the vehicle frame. The front surface of the brake cover is a concave surface, and the rear surface 44 of the brake cover is a convex surface. The brake cover is connected to the vehicle frame through a horizontally telescopic electric cylinder 45; when braking, the electric cylinder moves the brake cover backward by a set distance so that an air inlet gap 46 is generated between the brake cover and the rear end of the vehicle frame; during driving, the electric cylinder contracts so that the front end of the brake cover fits on the rear end of the vehicle frame. It further includes a sliding sleeve 47 connected to the vehicle frame and a guiding rod 48 extending along the front-rear direction with one end passing through the sliding sleeve. The other end of the guiding rod is fixed to the brake cover. An air outlet hole 49 is arranged at the center of the brake cover. When the front end of the brake cover fits on the rear end of the vehicle frame, the outlet end of the air outlet channel passes through the air outlet hole. When braking, the outlet end of the air outlet channel is located on the front side of the brake cover and inside the brake cover; when braking, the drive motor rotates reversely to assist in braking.

Claims

1. A car driven by a wire-controlled drive motor, comprising a vehicle controller, a frame, wheels supporting the frame, and a drive motor driving the wheels, characterized in that: It also includes an unmanned driving system and a motor controller, wherein the unmanned driving system is electrically connected to the vehicle controller, the vehicle controller is electrically connected to the motor controller, and the motor controller is electrically connected to the drive motor; the vehicle controller is used to send the forward, backward and speed signals of the car transmitted by the unmanned driving system to the brake motor controller, and the motor controller controls the forward and reverse direction and the speed of the drive motor according to the forward, backward and speed signals transmitted by the vehicle controller; the car driven by the wire-controlled drive motor also includes a drive motor for driving the running wheel to rotate, a heat dissipation sleeve is provided on the drive motor, a partition is provided in the heat dissipation sleeve, and an air inlet channel and an air outlet channel are provided in the heat dissipation sleeve, the air inlet channel is used to introduce air into the heat dissipation sleeve when the car is running, and the air introduced by the air inlet channel flows out from the air outlet channel after passing through the heat dissipation sleeve, the air inlet channel and the air outlet channel are distributed at both ends of the circumference of the drive motor and are located on both sides of the partition, and the angle between the air inlet channel and the air outlet channel is more than 22°.

2. A car driven by a drive-by-wire motor according to claim 1, characterized in that: The opening direction of the inlet end of the air inlet channel faces downward, and the rear side wall of the air inlet channel extends downward beyond the front side wall of the air inlet channel. The rear side wall of the air inlet channel is inclined with the lower end facing forward, and the part of the rear side wall of the air inlet channel that extends beyond the front side wall of the air inlet channel and is horizontally directed toward the air inlet channel is reflected onto the inner surface of the front side wall of the air inlet channel.

3. A car driven by a drive-by-wire motor according to claim 2, characterized in that: The opening area of ​​the air inlet channel gradually increases from the inlet end to the outlet end.

4. A car driven by a drive-by-wire motor according to claim 2 or 3, characterized in that: The inner circumferential surface of the heat dissipation sleeve is a cylindrical surface coaxial with the drive motor, and the directionality of the outlet end of the air inlet channel is tangent to the inner surface of the heat dissipation sleeve.

5. The automobile driven by a wire-controlled drive motor according to claim 1, 2 or 3, characterized in that: The opening direction of the outlet end of the air outlet channel faces backward.

6. The car driven by a drive-by-wire motor according to claim 5, characterized in that: A brake hood is provided at the rear end of the frame, the front surface of the brake hood is concave and the rear surface is convex, and the brake hood is connected to the frame through a horizontally telescopic electric cylinder; when braking, the electric cylinder channel moves the brake hood backward by a set distance so that an air intake gap is generated between the brake hood and the rear end of the frame; during driving, the electric cylinder contracts so that the front end of the brake hood fits against the rear end of the frame.

7. The car driven by a drive-by-wire motor according to claim 6, characterized in that: It also includes a sliding sleeve connected to the vehicle frame and a guide rod with one end inserted into the sliding sleeve and extending in the front-rear direction, and the other end of the guide rod is fixed to the brake cover.

8. The car driven by a drive-by-wire motor according to claim 6, characterized in that: An air outlet is provided at the center of the brake cover. When the front end of the brake cover is attached to the rear end of the frame, the outlet end of the air outlet channel is inserted into the air outlet hole. When braking, the outlet end of the air outlet channel is located in the front side of the brake cover and inside the brake cover. When braking, the drive motor reverses to perform power-assisted braking.

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