Heavy truck electric pushing device suitable for high-voltage power grid operation

Abstract

The utility model provides a heavy truck electric pushing device suitable for high-voltage power grid operation. The heavy truck electric pushing device comprises a frame, a pantograph, a power frame, a motor controller, an electric drive axle and supporting legs. The power frame, the motor controller and the electric drive axle are arranged on the frame, the motor controller is electrically connected with the electric drive axle, and the two ends of the electric drive axle are connected with the drive wheels respectively; a transformer and an alternating current device electrically connected with the transformer are arranged in the power frame, the alternating current device is electrically connected with a high-voltage distribution box, the high-voltage distribution box is electrically connected with the motor controller, and the pantograph is arranged above the power frame and electrically connected with the transformer; the two supporting legs are symmetrically arranged at the end, provided with the power frame, of the frame, the length of the supporting legs can be changed, and the two supporting legs can move oppositely. Relates to the technical field of new energy, and solves the problem that a traditional fuel oil heavy truck cannot be used when electric energy is conducted to a device of a vehicle through a pantograph under a network and finally used for driving the vehicle to move forwards.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy, and in particular to an electric propulsion device for heavy trucks suitable for operation in a high-voltage power grid. Background Art

[0002] As global carbon emission requirements increase year by year, the national level implements a system that focuses on carbon intensity control and supplements carbon emission total control, supporting qualified places, key industries and key enterprises to reach carbon emission peaks first. Against this background, the green transportation transformation will greatly boost the demand for new energy transportation capacity, including new energy heavy trucks. Today's new energy heavy trucks are divided into pure electric heavy trucks and hybrid heavy trucks. Both pure electric heavy trucks and hybrid heavy trucks are newly designed and developed at the source of development and design, and finally new models are produced to replace the old fuel models on the market. The traditional heavy trucks that are replaced by new energy models and retired can only be sent to the scrap factory, which greatly causes the waste of resources and products, and the heavy trucks that are still in operation can only use traditional energy for transportation on the road. At present, in some dedicated transportation scenarios, some road transportation networks are designed as highways with dedicated power supply networks, similar to the power supply network of high-speed rail. In this way, the electric energy is transmitted to the vehicle's device through the pantograph under the network. After a series of conversions of electric energy, it is finally used to drive the vehicle forward, which will not cause mileage anxiety to the vehicle, but on such roads, traditional fuel heavy trucks will not be used. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides an electric propulsion device for heavy trucks suitable for operation in a high-voltage power grid, which solves the problem that traditional fuel heavy trucks cannot be used when the electrical energy is transmitted to the vehicle's device through a pantograph under the network and ultimately used to drive the vehicle forward.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A heavy truck electric propulsion device suitable for high-voltage power grid operation, comprising: a vehicle frame, a pantograph, a power frame, a motor controller, an electric drive axle and support legs;

[0006] The power frame is arranged on one end of the frame, the motor controller and the electric drive axle are arranged on the other end of the frame, the motor controller and the electric drive axle are electrically connected, and the two ends of the electric drive axle are respectively connected to drive wheels;

[0007] A transformer and an AC device electrically connected to the transformer are provided in the power frame, the AC device is electrically connected to a high-voltage distribution box, the high-voltage distribution box is electrically connected to the motor controller, and the pantograph is arranged above the power frame and electrically connected to the transformer;

[0008] The supporting legs are provided with two, and the two supporting legs are symmetrically arranged at one end of the frame provided with a power frame, the lengths of the supporting legs can be changed and the two supporting legs can move toward each other.

[0009] Preferably, the supporting legs include a supporting hydraulic rod and a vertical supporting plate, two transverse hydraulic rods are symmetrically fixed to the end sides of the frame, the transverse hydraulic rod is horizontally arranged, the extended end of the transverse hydraulic rod is vertically fixed with a vertical supporting plate, the supporting hydraulic rod is fixed to the lower end of the vertical supporting plate, and the extended end of the supporting hydraulic rod is downward and fixedly connected to the supporting pad.

[0010] Preferably, an energy storage battery is also provided in the power frame, and the energy storage battery is electrically connected to the high-voltage distribution box and the motor controller, and the energy storage battery is also electrically connected to a charging port.

[0011] Preferably, a fixing plate is connected to the bottom of the side of the power frame, and bolts are threadedly connected between the fixing plate and the frame.

[0012] Preferably, the frame includes an upper horizontal part, an intermediate connecting part and a lower horizontal part, the upper horizontal part is arranged above the lower horizontal part, the intermediate connecting part is obliquely connected between the upper horizontal part and the lower horizontal part, and the power frame is arranged on the upper horizontal part.

[0013] Preferably, a traction pin for connecting to a tractor is provided on the lower surface of the upper horizontal portion, and a traction saddle for connecting a rear plate-hook vehicle is provided on the upper surface of the lower horizontal portion.

[0014] The utility model has the following beneficial effects:

[0015] It can connect heavy-duty truck tractor heads and cargo boxes front and back for long-distance cargo transportation. It has a pantograph dedicated to high-voltage power grids and can carry traditional fuel vehicles on roads with high-voltage power grid transportation circuits to complete transportation, allowing traditional fuel trucks to be used in high-voltage power grid transportation scenarios.

[0016] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic structural diagram of the utility model from another angle;

[0019] Figure 3 This is a schematic diagram of the support leg connection of the utility model.

[0020] In the above drawings: 1. Frame; 11. Transverse hydraulic rod; 2. Pantograph; 3. Power frame; 301. Fixed plate; 31. Transformer; 32. AC converter; 33. High-voltage distribution box; 34. Energy storage battery; 35. Charging port; 4. Motor controller; 5. Electric drive axle; 6. Support leg; 61. Support hydraulic rod; 62. Vertical support plate; 7. Drive wheel; 8. Towing pin; 9. Towing saddle. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and functions achieved by the present invention clearer and easier to understand, the technical solutions in the present invention are further described below in conjunction with the accompanying drawings and embodiments.

[0022] See also Figures 1 to 3 As shown, a heavy truck electric propulsion device suitable for high-voltage power grid operation includes: a frame 1, a pantograph 2, a power frame 3, a motor controller 4, an electric drive axle 5 and a support leg 6; the power frame 3 is arranged on one end of the frame 1, the motor controller 4 and the electric drive axle 5 are arranged at the other end of the frame 1, the motor controller 4 and the electric drive axle 5 are electrically connected, and the two ends of the electric drive axle 5 are respectively connected to driving wheels 7; a transformer 31 and an AC 32 electrically connected to the transformer 31 are arranged in the power frame 3, the AC 32 is electrically connected to a high-voltage distribution box 33, the high-voltage distribution box 33 is electrically connected to the motor controller 4, the pantograph 2 is arranged above the power frame 3 and is electrically connected to the transformer 31; two support legs 6 are provided, and the two support legs 6 are symmetrically arranged at one end of the frame 1 where the power frame 3 is provided, the length of the support legs 6 can be changed and the two support legs 6 can move toward each other.

[0023] The frame 1 is used to place a fixed power frame 3, and the power frame 3 is used to fix a transformer 31, an AC device 32 and a high-voltage distribution box 33, providing an installation environment for each component; the support legs 6 and the driving wheels 7 work together to support the frame 1, and the support legs 6 can make the device stand in place when it is not combined with the vehicle. The length of the support legs 6 changes, and the two support legs 6 can move toward each other. When matching and connecting with the vehicle, the length of the support legs 6 becomes shorter, and the two support legs 6 move in a direction close to each other, and the support legs 6 are retracted to avoid affecting the movement of the vehicle; the function of the pantograph 2 is to connect the electricity of the high-voltage power grid to the device, the transformer 31 is used to convert the electric energy of the high-voltage power grid into electric energy that can be used by the AC device 32, and the AC device 32 can convert the electric energy converted by the transformer 31 into stable and adjustable DC electric energy, which can be used by the motor controller 4, and the motor controller 4 and the electric drive bridge 5 can complete electric drive under the power of the AC device 32, and carry out electric propulsion on the heavy truck tractor after matching. This device can connect the front and rear of a heavy truck tractor head and a cargo box for long-distance cargo transportation. It is equipped with a pantograph 2 dedicated to the high-voltage power grid, and can carry traditional fuel vehicles on roads with high-voltage power grid transportation circuits to complete transportation, allowing traditional fuel trucks to be used in high-voltage power grid transportation scenarios.

[0024] Furthermore, if Figures 1 to 3 As shown, the support leg 6 includes a supporting hydraulic rod 61 and a vertical supporting plate 62. Two transverse hydraulic rods 11 are symmetrically fixed to the side of the end of the frame 1. The transverse hydraulic rod 11 is horizontally arranged. The extended end of the transverse hydraulic rod 11 is vertically fixed with a vertical supporting plate 62. The supporting hydraulic rod 61 is fixed to the lower end of the vertical supporting plate 62. The extended end of the supporting hydraulic rod 61 is downward and fixedly connected to the supporting pad. The telescopic ends of the two transverse hydraulic rods 11 are arranged back to back. When the transverse hydraulic rod 11 is extended, the two vertical supporting plates 62 move away from each other, driving the two supporting hydraulic rods 61 to move away from each other. When the supporting hydraulic rod 61 is extended, the supportable height of the frame 1 becomes higher. By setting the transverse hydraulic rod 11 and the supporting hydraulic rod 61, the support of the frame 1 is completed or the support of the frame 1 is cancelled.

[0025] Furthermore, if Figure 1 As shown, the power frame 3 is further provided with an energy storage battery 34, which is electrically connected to the high-voltage distribution box 33 and the motor controller 4, and is also electrically connected to a charging port 35. As the electric energy storage system of the device, the energy storage battery 34 can absorb the braking energy generated by the motor drive, and can also drive the vehicle when it is disconnected from the high-voltage power supply network, thereby making up for the utilization rate of clean energy in long-distance transportation of fuel heavy trucks, reducing carbon emissions, and completing the oil-electric hybrid combination of fuel heavy trucks.

[0026] Specifically, a motor is also provided at one end of the motor controller 4, and there is communication between the AC adapter 32, the energy storage battery 34, and the motor controller 4, and data exchange can be completed. When the vehicle completes the connection between the front fuel heavy truck tractor and the semi-trailer vehicle, and is connected to the high-voltage power grid, the system enters the working mode. The motor controller 4 can determine the current motor speed by collecting the rotary transformer signal at the motor end, thereby determining the vehicle speed state. After the speed exists for a certain period of time, the motor controller 4 can determine that the vehicle is driving. At this time, the motor controller 4 can select an appropriate torque operating point for the vehicle according to the current speed and in combination with its own efficiency map, so that the motor can work and be applied to the electric drive axle 5 to realize the auxiliary driving of the vehicle; when the motor controller 4 collects the vehicle braking signal, it can control the motor to generate a braking force in the opposite direction of the vehicle according to the current motor speed and in combination with its own efficiency map, thereby realizing auxiliary braking and recovering the braking energy generated by the motor.

[0027] Furthermore, a fixing plate 301 is connected to the bottom of the side of the power frame 3, and bolts are threadedly connected between the fixing plate 301 and the frame 1. Two fixing plates 301 are arranged on the same side of the power frame 3, and the fixing plates 301 are connected to the frame 1 by bolts.

[0028] Furthermore, if Figure 1 and Figure 2 As shown, the frame 1 includes an upper horizontal part, an intermediate connecting part and a lower horizontal part, the upper horizontal part is arranged above the lower horizontal part, the intermediate connecting part is obliquely connected between the upper horizontal part and the lower horizontal part, and the power frame 3 is arranged on the upper horizontal part. The upper horizontal part and the lower horizontal part have horizontal surfaces for easy flat connection.

[0029] Furthermore, if Figure 1 and Figure 2 As shown, the lower surface of the upper horizontal part is provided with a traction pin 8 connected to the tractor, and the upper surface of the lower horizontal part is provided with a traction saddle 9 for the rear plate-hook vehicle. The traction pin 8 is connected to the tractor, and the traction saddle 9 is connected to the rear vehicle, so that transportation can be carried out.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A heavy truck electric propulsion device suitable for high voltage power grid operation, characterized in that: include: A vehicle frame (1), a pantograph (2), a power frame (3), a motor controller (4), an electric drive axle (5) and a support leg (6); The power frame (3) is arranged on one end of the vehicle frame (1), the motor controller (4) and the electric drive bridge (5) are arranged on the other end of the vehicle frame (1), the motor controller (4) and the electric drive bridge (5) are electrically connected, and the two ends of the electric drive bridge (5) are respectively connected to driving wheels (7); The power frame (3) is provided with a transformer (31) and an AC device (32) electrically connected to the transformer (31); the AC device (32) is electrically connected to a high-voltage distribution box (33); the high-voltage distribution box (33) is electrically connected to the motor controller (4); the pantograph (2) is arranged above the power frame (3) and is electrically connected to the transformer (31); Two supporting legs (6) are provided, and the two supporting legs (6) are symmetrically arranged at one end of the vehicle frame (1) provided with a power frame (3); the length of the supporting legs (6) can be changed and the two supporting legs (6) can move towards each other.

2. A heavy truck electric propulsion device suitable for high voltage power grid operation as claimed in claim 1, characterized in that: The support leg (6) comprises a support hydraulic rod (61) and a vertical support plate (62); two transverse hydraulic rods (11) are symmetrically fixed to the side of the end of the frame (1); the transverse hydraulic rod (11) is horizontally arranged; the extended end of the transverse hydraulic rod (11) is vertically fixed with a vertical support plate (62); the support hydraulic rod (61) is fixed to the lower end of the vertical support plate (62); the extended end of the support hydraulic rod (61) is downward and fixedly connected to the support pad.

3. The heavy truck electric propulsion device suitable for high voltage power grid operation as claimed in claim 1, characterized in that: An energy storage battery (34) is also provided in the power frame (3); the energy storage battery (34) is electrically connected to the high-voltage distribution box (33) and the motor controller (4); the energy storage battery (34) is also electrically connected to a charging port (35).

4. The heavy truck electric propulsion device suitable for high voltage power grid operation as claimed in claim 1, characterized in that: A fixing plate (301) is connected to the bottom of the side of the power frame (3), and bolts are threadedly connected between the fixing plate (301) and the vehicle frame (1).

5. The heavy truck electric propulsion device suitable for high voltage power grid operation as claimed in claim 1, characterized in that: The vehicle frame (1) comprises an upper horizontal portion, an intermediate connecting portion and a lower horizontal portion, the upper horizontal portion is arranged above the lower horizontal portion, the intermediate connecting portion is obliquely connected between the upper horizontal portion and the lower horizontal portion, and the power frame (3) is arranged on the upper horizontal portion.

6. A heavy truck electric propulsion device suitable for high voltage power grid operation as claimed in claim 5, characterized in that: The lower surface of the upper horizontal part is provided with a traction pin (8) connected to a tractor, and the upper surface of the lower horizontal part is provided with a traction saddle (9) for rear-connecting a plate-hook vehicle.

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