CN216139799U

CN216139799U - Semi-mounted double-drive truck electric propulsion system

Info

Publication number: CN216139799U
Application number: CN202121706912.2U
Authority: CN
Inventors: 李涌泉; 刘鹏
Original assignee: Shandong Ghost Valley Environmental Protection Technology Co ltd
Current assignee: Shandong Ghost Valley Environmental Protection Technology Co ltd
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2022-03-29
Anticipated expiration: 2031-07-26

Abstract

The utility model relates to a semi-trailer double-drive truck electric propulsion system which comprises a traction power system, a trailer power system and a controller, wherein the traction power system comprises a tractor engine, a tractor alternating-current generator, a tractor permanent-magnet direct-current motor, a tractor storage battery and a tractor main drive axle, the trailer power system comprises a trailer permanent-magnet direct-current motor, a trailer CNG/LNG converter range extender and a trailer storage battery, and the trailer CNG/LNG converter range extender is connected with the tractor CNG/LNG converter range extender through a middle cable. The power system transformation scheme of the utility model can assist the driving of the semitrailer, has the characteristics of high transmission efficiency, high fuel saving rate of the whole semitrailer, small volume, light weight and the like, and is easy to popularize and use.

Description

Semi-mounted double-drive truck electric propulsion system

Technical Field

The utility model relates to the technical field of automobile devices, in particular to an electric propulsion system of a semi-trailer double-drive truck.

Background

At present, semi-trailer trucks mainly use fuel oil, driving devices are all assembled on a traction main truck, the driving mode is mainly diesel engine driving, in terms of energy consumption conversion rate, the efficiency of a diesel engine is only 40-50%, and the driving mode is pure electric at present, although the driving mode greatly improves the working efficiency of an engine, the transmission efficiency of centralized electric driving is low, the capacity of an adopted battery is large, the cost of the battery is high, the size is large, the self weight is great, and the like; when the single tractor is powered, direct feedback is provided between the diesel engine and the driving wheel or the propeller, and the tractor is easy to overturn when the load is suddenly changed and the gradient is greater than 18 degrees.

Disclosure of Invention

To overcome the defects, the utility model aims to provide an electric propulsion system of a semi-trailer double-drive truck.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a semi-mounted double-drive freight train electric propulsion system, is including drawing driving system, trailer driving system, controller, traction force driving system includes tractor engine, tractor alternator, tractor permanent magnet direct current motor, tractor battery, traction car owner transaxle, and the tractor engine is connected with tractor alternator mechanical connection, and tractor alternator carries the electric energy that sends for the tractor battery through tractor CNG/LNG current conversion range extender, tractor permanent magnet direct current motor is connected to the tractor battery, and tractor permanent magnet direct current motor output is connected with traction car owner's reduction gear.

As optimizing, the main reduction gear of tractor is fixed on the main transaxle of tractor, and the tractor drives wheel hub is installed at the both ends of main transaxle of tractor, is equipped with the tractor drive wheel on the tractor drives wheel hub, and main reduction gear output of tractor is connected with differential mechanism assembly, and differential mechanism assembly passes through the semi-axis and is connected with tractor drive wheel hub, tractor transaxle attenuator is installed to the both sides of main transaxle of tractor.

As optimizing, trailer driving system includes trailer permanent magnet direct current motor, trailer CNG LNG current conversion range extender, trailer battery, trailer permanent magnet direct current motor is connected with trailer main reducer, and trailer main reducer fixes on the rear drive axle of trailer, and trailer drive wheel hub is installed at rear drive axle both ends of trailer, and trailer main reducer output is connected with differential mechanism assembly, and differential mechanism assembly passes through the semi-axis and is connected with trailer drive wheel hub, the tractor attenuator is installed to the both sides of rear drive axle of trailer, installs the trailer drive wheel on the trailer drive wheel hub.

And preferably, the trailer permanent magnet direct current motor is connected with a trailer CNG/LNG converter range extender, the trailer CNG/LNG converter range extender is electrically connected with a trailer storage battery, and the trailer CNG/LNG converter range extender is connected with the tractor CNG/LNG converter range extender through an intermediate cable.

As optimizing, the main reduction gear of the tractor is connected with the auxiliary reduction gear of the tractor through the coupler, the auxiliary reduction gear of the tractor is fixed on the auxiliary drive axle of the tractor, the auxiliary drive wheel hub of the tractor is installed at the two ends of the auxiliary drive axle of the tractor, the output end of the auxiliary reduction gear of the tractor is connected with the differential assembly, the differential assembly is connected with the wheel hub through the half shaft, the auxiliary damper of the tractor is installed on the two sides of the auxiliary drive axle of the tractor, and a steel plate spring is installed before the main drive axle of the tractor and the auxiliary drive axle of the tractor.

And optimally, a cable connected with the tractor storage battery and the tractor CNG/LNG converter range extender is placed in a cable protection pipe.

And optimally, the cable connecting the trailer storage battery and the CNG/LNG converter range extender is placed in a cable protection pipe.

And as optimization, the controller is respectively connected with the tractor engine, the tractor alternating-current generator, the tractor storage battery, the trailer storage battery and the inverter.

The utility model has the following beneficial effects: the power system transformation scheme can assist the driving of the semitrailer, has the characteristics of high transmission efficiency, high fuel saving rate of the whole semitrailer, small volume, light weight and the like, and is easy to popularize and use; the capacity of the storage battery of the extended range electric vehicle is only 40-60% of that of the pure electric vehicle, and the cost of the battery is greatly reduced; charging is carried out by utilizing the 'valley electricity' of a power grid at night or utilizing the rest clearance of a driver, and when the electric quantity is insufficient in the daytime, the electric quantity is provided by a range extender power assembly; the working condition of the range extender is single, the exhaust emission and the exhaust temperature can be strictly controlled, and the environmental pollution is greatly reduced; the traction storage battery and the trailer storage battery can provide enough power torque to meet different working conditions of starting, accelerating, climbing and the like of the vehicle driven by the motor; the constant-speed economic oil consumption is matched between the diesel generator set and the variable-frequency rectification control cabinet, direct load feedback is not generated between the diesel engine and the driving wheel/propeller, when load sudden change occurs, the trailer storage battery set can provide 80-100% of additional output load, and when an overloaded 100% traction vehicle climbs a slope with the maximum torque of 6km/h, the rollover limit is improved to 23 degrees from 18 degrees, and at the moment, the generator set still has economic oil consumption.

Drawings

Fig. 1 is a schematic view of the entire vehicle structure of the present invention.

FIG. 2 is a schematic diagram of the overall power system configuration of the present invention.

Fig. 3 is a first schematic view of a power system of the tractor according to the present invention.

Fig. 4 is a schematic diagram of a power system of the tractor according to the present invention.

Fig. 5 is a schematic view of the trailer powertrain of the present invention.

Fig. 6 is a schematic diagram of a trailer powertrain system of the present invention.

Fig. 7 is a schematic diagram of the present invention.

In the figure, 11 steel plate springs, 12 tractor driving hubs, 13 main reducer connecting shafts, 14 tractor main reducers, 15 tractor driving axle dampers, 16 tractor storage batteries, 17 tractor permanent magnet direct current motors, 18 trailer cable pipes, 19 tractor CNG/LNG current conversion range extenders, 110 tractor alternating current generators, 111 tractor engines, 112 tractor main driving axles, 113 tractor auxiliary driving axles, 114 tractor auxiliary reducers, 115 tractor auxiliary dampers, 21 trailer idle wheels, 22 trailer driving hubs, 23 tractor dampers, 24 trailer main reducers, 25 trailer permanent magnet direct current motors, 26 trailer CNG/LNG current conversion range extenders, 27 incoming cable pipes, 28 cable protective pipes, 29 trailer storage batteries and 210 trailer rear driving axles.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings.

1-7, the electric propulsion system of a semi-trailer double-drive truck comprises a traction power system, a trailer power system and a controller, wherein the traction power system comprises a tractor engine 111, a tractor alternator 110, a tractor permanent magnet direct current motor 17, a tractor storage battery 16 and a tractor main drive axle 112, the tractor engine 111 is mechanically connected with the tractor alternator 110, the tractor alternator 110 transmits the generated electric energy to the tractor storage battery 16 through a tractor CNG/LNG converter extender 19, the tractor storage battery 16 supplies power to the tractor permanent magnet direct current motor 17, the output end of the tractor permanent magnet direct current motor 17 is connected with a tractor main reducer 14, the tractor main reducer 14 is fixed on the tractor main drive axle 112, tractor drive hubs 12 are mounted at two ends of the tractor main drive axle 112, a tractor driving wheel 12 is assembled on the tractor driving wheel hub 12, the output end of a tractor main speed reducer 14 is connected with a differential assembly, the differential assembly is connected with the tractor driving wheel hub 12 through a half shaft, and tractor driving axle dampers 15 are installed on two sides of a tractor main driving axle 112;

the trailer power system comprises a trailer permanent magnet direct current motor 25, a trailer CNG/LNG conversion range extender 26 and a trailer storage battery 29, wherein the trailer permanent magnet direct current motor 25 is connected with a trailer main reducer 24, the trailer main reducer 24 is fixed on a trailer rear drive axle 210, trailer drive hubs 22 are installed at two ends of the trailer rear drive axle 210, the output end of the trailer main reducer 24 is connected with a differential assembly, the differential assembly is connected with the trailer drive hubs 22 through half shafts, tractor dampers 23 are installed at two sides of the trailer rear drive axle 210, trailer drive wheels are installed on the trailer drive hubs 22, the trailer permanent magnet direct current motor 25 is connected with the trailer CNG/LNG conversion range extender 26, the trailer CNG/LNG conversion range extender 26 is electrically connected with the trailer storage battery 29, the trailer CNG/LNG conversion range extender 26 is connected with the trailer CNG/LNG conversion range extender 19 through an intermediate cable, namely, the cable pipe 18 led out from the CNG/LNG conversion range extender 19 of the tractor is communicated with the cable pipe 27 led in from the CNG/LNG conversion range extender 26 of the trailer, and the intermediate cable is placed in the

cable pipes

18 and 27.

The main tractor speed reducer 14 is connected with the auxiliary tractor speed reducer 114 through a coupler, the auxiliary tractor speed reducer 114 is fixed on the auxiliary tractor drive axle 113, auxiliary tractor drive hubs are installed at two ends of the auxiliary tractor drive axle 113, the output end of the auxiliary tractor speed reducer 114 is connected with a differential assembly, the differential assembly is connected with the hubs through half shafts, auxiliary tractor dampers 115 are installed on two sides of the auxiliary tractor drive axle 113, and a steel plate spring 11 is installed in front of the main tractor drive axle 112 and the auxiliary tractor drive axle 113.

The cable connecting the tractor storage battery 16 and the tractor CNG/LNG conversion range extender 19 is placed in the cable protection pipe 28.

The cable connecting the trailer accumulator 29 and the trailer CNG/LNG conversion range extender 26 is placed in the cable protective pipe 28.

The controller is connected to the tractor engine 111, the tractor alternator 110, the tractor battery 16, the trailer battery 29, and the inverter, respectively.

The tractor storage battery 16 and the trailer storage battery 29 both adopt lithium manganate storage batteries.

The truck consists of a traction main vehicle and a semitrailer which is towed at the rear part of the traction main vehicle, wherein a traction power system is mounted on the traction main vehicle, a trailer power system is mounted on the semitrailer, the trailer power system drives a trailer permanent magnet direct current motor 25 on a rear drive axle 210 of the trailer, the centralized drive of the traction main vehicle is changed into the uniform drive of the whole trailer, so the drive characteristic of the vehicle is improved, in addition, the coils of a tractor direct current permanent magnet motor 17 and the trailer permanent magnet direct current motor 25 are used as inductance energy storage in the traction power system and the trailer power system in a follow current stage, the mechanical energy of the vehicle sliding is converted into inductance magnetic field energy to generate pump-up voltage, a controller carries out regular PWM control on the on-off of an inverter IGBT power module according to a sensor module signal, when the generated voltage is higher than the voltage of a corresponding storage battery, the current is fed back to the corresponding storage battery to achieve the purpose of energy feedback, as shown in fig. 7.

According to the verification of the energy consumption conversion rate, the efficiency of the diesel engine is 40-50%, the efficiency of the permanent magnet direct current motor can reach 95%, the maximum power of the F3DM-37kw permanent magnet direct current motor is 50kw, and the rapid climbing can reach 70-80 kw. Therefore, the power of the permanent magnet direct current motor rises very fast, and the platform of constant power (the maximum power is far greater than the calibration power) is very long. The maximum power is larger than the nominal power (generally 2 times), and the intermediate rotating speed can be reached. Using a 42 tractor vehicle of 213KW in Dayun N8 series, an Weichai diesel inline six-cylinder four-stroke supercharged diesel engine was used, with a maximum output of 213KW and a maximum torque of 1160 N.m (1200-. When the permanent magnet direct current motor TZ290XSD0 is adopted for driving, the power consumption of a single driving wheel under the maximum torque is 70KW, the total power consumption is 140KW, and the total power consumption is only 65.73% of the original power consumption. The constant-speed economic oil consumption is matched between the diesel generating set and the variable-frequency rectification control cabinet, direct load feedback is not generated between the diesel engine and the driving wheels/propellers, the auxiliary storage battery set can provide 80-100% of additional output load when load sudden change occurs, and the rollover limit of an overloaded 100% traction vehicle is improved to 23 degrees from 18 degrees when the vehicle climbs at the maximum torque of 6km/h, and the generating set still has economic oil consumption at the moment. Therefore, the comprehensive oil consumption is saved by more than 40%, the real efficiency of the real power module after good matching is achieved, and the comprehensive oil consumption can withstand long-term severe inspection of broad audiences.

The present invention is not limited to the above embodiments, and any structural changes made under the teaching of the present invention shall fall within the protection scope of the present invention, which is similar or similar to the technical solutions of the present invention.

The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.

Claims

1. The utility model provides a semi-mounted double drive freight train electric propulsion system, includes pulls driving system, trailer driving system, controller, characterized by: the traction power system comprises a tractor engine (111), a tractor alternating-current generator (110), a tractor permanent-magnet direct-current motor (17), a tractor storage battery (16) and a tractor main driving axle (112), wherein the tractor engine (111) is mechanically connected with the tractor alternating-current generator (110), the tractor alternating-current generator (110) transmits the sent electric energy to the tractor storage battery (16) through a tractor CNG/LNG (compressed natural gas/liquefied natural gas) converter range extender (19), the tractor permanent-magnet direct-current motor (17) is connected with the tractor storage battery (16), and the output end of the tractor permanent-magnet direct-current motor (17) is connected with a tractor main speed reducer (14).

2. A semi-trailer dual drive truck electric propulsion system as claimed in claim 1, characterized in that: tractor drive wheel hub (12) are installed at the both ends of tractor main drive axle (112), are equipped with the tractor drive wheel on tractor drive wheel hub (12), and tractor main reduction gear (14) output is connected with differential mechanism assembly, and differential mechanism assembly passes through the semi-axis and is connected with tractor drive wheel hub (12), tractor drive axle attenuator (15) is installed to the both sides of tractor main drive axle (112).

3. A semi-trailer dual drive truck electric propulsion system as claimed in claim 1, characterized in that: trailer driving system includes trailer permanent magnet direct current motor (25), trailer CNG LNG current conversion range extender (26), trailer battery (29), trailer permanent magnet direct current motor (25) are connected with trailer final drive (24), trailer final drive (24) are fixed on trailer rear drive axle (210), trailer drive wheel hub (22) are installed at trailer rear drive axle (210) both ends, trailer final drive (24) output is connected with differential mechanism assembly, differential mechanism assembly is connected with trailer drive wheel hub (22) through the semi-axis, tractor attenuator (23) are installed to the both sides of trailer rear drive axle (210), install the drive wheel on trailer drive wheel hub (22).

4. A semi-trailer dual drive truck electric propulsion system as claimed in claim 3, characterized in that: the trailer CNG/LNG conversion range extender (26) is electrically connected with the trailer storage battery (29), and the trailer CNG/LNG conversion range extender (26) is connected with the tractor CNG/LNG conversion range extender (19) through an intermediate cable.

5. A semi-trailer dual drive truck electric propulsion system as claimed in claim 1, characterized in that: tractor main reducer (14) is connected with tractor auxiliary reducer (114) through the shaft coupling, tractor auxiliary reducer (114) is fixed on tractor auxiliary drive axle (113), tractor auxiliary drive wheel hub is installed at the both ends of tractor auxiliary drive axle (113), tractor auxiliary reducer (114) output is connected with the differential mechanism assembly, the differential mechanism assembly passes through the semi-axis and is connected with wheel hub, tractor auxiliary damper (115) is installed to tractor auxiliary drive axle (113) both sides, install leaf spring (11) before tractor main drive axle (112) and tractor auxiliary drive axle (113).

6. A semi-trailer dual drive truck electric propulsion system as claimed in claim 3, characterized in that: and a cable connected with the tractor storage battery (16) and the tractor CNG/LNG conversion range extender (19) is placed in the cable protective pipe (28).

7. A semi-trailer dual drive truck electric propulsion system as claimed in claim 6, characterized in that: and the cable connecting the trailer storage battery (29) with the CNG/LNG conversion range extender (26) of the trailer is placed in the cable protective pipe (28).

8. An electric propulsion system for a semi-trailer, dual drive truck as defined in claim 1 or 2, wherein: the controller is respectively connected with a tractor engine (111), a tractor alternating-current generator (110), a tractor storage battery (16), a trailer storage battery (29) and an inverter.