CN211468423U - Hybrid power assembly and rail vehicle - Google Patents

Abstract

The utility model provides a hybrid assembly and a rail vehicle, which relate to the technical field of hybrid assemblies of diesel multiple units and comprise a diesel engine, a generator and a gearbox; the generator is connected with the diesel engine; the gearbox is connected with the generator and is connected with an axle gearbox; the generator is also connected with a converter, and the converter is connected with electric equipment or a power battery. The utility model provides a hybrid assembly integrates the traction of vehicle and the power supply of vehicle internal equipment, light in weight, small in occupied space, convenient for the layout of hybrid assembly, and space-saving; the braking energy of the vehicle is converted into electric energy, so that the energy loss of the diesel engine is reduced; when the diesel engine is started and accelerated, the power battery can invert direct current into alternating current to drive the diesel engine to start, or assist the diesel engine to drive the gearbox together, so that the acceleration of a vehicle can be improved in a short time, the oil consumption of the diesel engine can be reduced, and the effects of energy conservation and emission reduction can be realized.

Description

Hybrid power assembly and rail vehicle

Technical Field

The utility model belongs to the technical field of the internal combustion EMUs hybrid assembly, more specifically says, relates to a hybrid assembly and rail vehicle.

Background

In internal combustion railway vehicles, the power source mostly adopts a mode of internal combustion liquid transmission and internal combustion electric transmission, the former directly drives a bogie by connecting a diesel engine with a hydraulic or hydraulic-mechanical gearbox, and the latter adopts the diesel engine to drive a generator to generate electricity so as to drive a bogie motor. The structure needs to set two different power systems corresponding to power traction and power supply, has the problems of multiple parts and large occupied space, is not beneficial to the reasonable arrangement of the power device, and is also not beneficial to realizing energy conservation and emission reduction by the mode.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hybrid assembly and rail vehicle to solve the big technical problem that is unfavorable for energy saving and emission reduction of power assembly occupation space that exists among the prior art.

In order to achieve the above object, the utility model adopts the following technical scheme: the hybrid power assembly comprises a diesel engine, a generator and a gearbox; the generator is connected with the diesel engine, the generator is also connected with a converter, and the converter is respectively connected with electric equipment and a power battery; the gearbox is connected with the generator; the axle gear box is connected with the gear box, and the axle gear box is connected with a wheel pair.

As another embodiment of the present application, the generator is a permanent magnet generator, and the generator includes a housing, a stator, and a rotor; the main shaft of the stator is arranged along the horizontal direction and is positioned in the shell, and the stator is provided with a through central hole; the rotor is arranged in the central hole, one end of the rotor is provided with a front connecting disc used for being connected with a diesel engine, and the other end of the rotor is provided with a rear connecting disc used for being connected with a gearbox.

As another embodiment of the present application, the inner ring of the stator is provided with a plurality of stator windings, each stator winding includes a plurality of flat wire conductors and an insulating layer, and the plurality of flat wire conductors are located in the housing and are sequentially arranged from outside to inside; the insulating layer covers the outer parts of the plurality of flat wire conductors.

As another embodiment of the application, the front connecting disc and the rear connecting disc are respectively a diaphragm coupling, and the front connecting disc is connected with the main shaft of the rotor through a spline.

As another embodiment of the present application, a first cold water channel is disposed on the diesel engine, a second cold water channel is disposed on the generator, a third cold water channel is disposed on the transmission, and the hybrid power assembly further includes a fan and a cold water tank, wherein the cold water tank is respectively communicated with the first cold water channel, the second cold water channel, and the third cold water channel.

As another embodiment of the present application, the hybrid powertrain further includes a frame for coupling to a vehicle body, and the diesel engine, the generator, and the transmission are disposed within the frame.

As another embodiment of the application, the frame is further provided with a first vibration isolator positioned between the diesel engine and the generator.

As another embodiment of the present application, a silencer is further provided on the frame.

The utility model provides a hybrid assembly's beneficial effect lies in: the utility model provides a hybrid assembly utilizes axletree gear box and wheel pair that links to each other to realize the conversion of vehicle braking energy to the electric energy, has reduced the conversion volume of the mechanical energy of diesel engine to the electric energy, has good energy saving and emission reduction effect; in addition, when the diesel engine is started, the power battery can invert direct current into alternating current to drive the diesel engine to be started, and can provide electric energy for the generator when the rail vehicle starts to accelerate, so that the torque output by the generator and the diesel engine jointly drive the gearbox, the acceleration of the vehicle can be conveniently improved in a short time, the vehicle can be quickly started and stopped, and the power output of the diesel engine can be reduced; the hybrid power assembly in the embodiment utilizes the series connection of the diesel engine, the generator and the gearbox to realize the traction of the wheel set of the vehicle, the converter is connected to the generator to supply power to the electric equipment in the vehicle, the two sets of power components are effectively integrated, the hybrid power assembly is light in weight and small in occupied space, the hybrid power assembly is convenient to arrange and install below the vehicle, and the occupied space is saved.

The utility model also provides a rail vehicle, include the automobile body and set up in the inside hybrid assembly of automobile body or below.

As another embodiment of the application, a second vibration isolator is arranged between the vehicle body and the hybrid power assembly.

The utility model provides a rail vehicle's beneficial effect is the same with hybrid assembly's beneficial effect, no longer gives unnecessary details here.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic diagram of a hybrid powertrain according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a hybrid power assembly provided in an embodiment of the present invention;

FIG. 3 is an exploded view of the engine and transmission of FIG. 2;

FIG. 4 is a left side view of the stator of FIG. 3;

fig. 5 is a schematic structural view of the stator winding of fig. 4.

In the figure: 100. a frame; 110. a first vibration isolator; 120. a muffler; 130. a second vibration isolator; 200. a diesel engine; 300. a generator; 310. a housing; 320. a stator; 330. a rotor; 340. a front connecting disc; 350. a rear connecting disc; 360. a second cold water passage; 370. a stator winding; 371. a flat wire conductor; 372. an insulating layer; 400. a gearbox; 500. an axle gear box; 600. a cold water tank; 700. a current transformer; 710. a wheel set; 720. an electricity-consuming device; 730. and a power battery.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 5, a hybrid powertrain and a rail vehicle according to the present invention will now be described. Hybrid powertrain, diesel engine 200, generator 300, and gearbox 400; the generator 300 is connected with the diesel engine 200, the generator 300 is also connected with a converter 700, and the converter 700 is respectively connected with electric equipment 720 and a power battery 730; the gearbox 400 is connected with the generator 300; the axle gearbox 500 is connected to the gearbox 400 and a wheel pair 710 is connected to the axle gearbox 500. The wheel pair 710 refers to a wheel of a vehicle, and in the running process of the vehicle, the axle gear box 500 drives the wheel pair 710 to rotate, so that the wheel of the vehicle is driven to move, and the vehicle is driven to run.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or be indirectly on the other element. The terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the present invention. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Compared with the prior art, the hybrid power assembly provided by the utility model utilizes the axle gear box 500 to realize the conversion of the vehicle braking energy to the electric energy, reduces the conversion amount of the mechanical energy of the diesel engine 200 to the electric energy, and has good energy-saving and emission-reducing effects; in addition, the power battery 730 can invert direct current into alternating current to drive the diesel engine 200 to start when the diesel engine 200 starts, and can provide electric energy for the generator 300 when the rail vehicle starts to accelerate, so that the torque output by the generator 300 and the diesel engine 200 drive the gearbox 400 together, thereby facilitating the acceleration of the vehicle to be improved in a short time and reducing the power output of the diesel engine 200.

In the hybrid power assembly in the embodiment, the diesel engine 200, the generator 300 and the gearbox 400 are connected in series to achieve traction of the wheel set 710 of the vehicle, the converter 700 is connected to the generator 300 to supply power to the electric equipment 720 in the vehicle, the two sets of power components are effectively integrated, the hybrid power assembly is light in weight and small in occupied space, the hybrid power assembly is convenient to arrange and mount below the vehicle, and the occupied space is saved.

In this embodiment, there are several following operating modes:

(1) under the working condition of vehicle traction and power supply, the diesel engine 200 provides mechanical energy, the generator 300 can output variable-frequency three-phase voltage at the variable rotating speed of the diesel engine 200, the variable-frequency three-phase voltage is rectified into direct-current voltage through the converter 700, and finally the direct-current voltage is further inverted and output to 380V alternating-current voltage to be used for the electric equipment 720;

(2) under the vehicle braking condition, the generator 300 recovers most of the vehicle braking energy, converts mechanical energy into electric energy, and charges the power battery 730 or provides power for the electric equipment 720 through the converter 700; the brake energy is recovered, and the abrasion of the brake pad is reduced;

(3) under the starting and accelerating working conditions, the power battery 730 rectifies direct current into alternating current and supplies the alternating current to the generator 300, the generator 300 serves as a motor, the generator 300 outputs torque and drives the gearbox 400 together with the diesel engine 200, and therefore the vehicle can obtain larger acceleration in a short time. In the process, all the power consumption of the vehicle equipment is converted into alternating current through the direct current of the power battery 730 and then is supplied to the power equipment 720;

(4) under the working condition of starting the diesel engine 200, electric energy is obtained from the power battery 730, and the generator 300 is used as a motor to directly drive the diesel engine 200 to rotate.

Further, the electric device 720 includes a hot water heating device and a warm air supply device. In this embodiment, the electric energy converted by the energy of the diesel engine 200 and the energy of the vehicle brake can be converted into electric energy and stored in the power battery 730, and the power battery 730 is used to heat hot water or natural wind, so as to supply hot water and warm wind in the vehicle cabin, thereby effectively utilizing the above energy and achieving the effects of energy conservation and emission reduction.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 3 to 5, the generator 300 is a permanent magnet generator 300, the generator 300 includes a housing 310, a stator 320 and a rotor 330; the main shaft of the stator 320 is arranged along the horizontal direction and is positioned in the shell 310, and the stator 320 is provided with a through central hole; the rotor 330 is disposed in the central hole, and one end of the rotor 330 is provided with a front connection disc 340 for connecting with the diesel engine 200, and the other end is provided with a rear connection disc 350 for connecting with the transmission 400. The permanent magnet generator 300 refers to a power generation device that converts mechanical energy converted from thermal energy into electrical energy. The permanent magnet generator 300 omits an excitation winding, a carbon brush and a slip ring structure of the excitation generator 300, the whole structure is simple, the problems of easy burning of the excitation winding, line breakage and the like are avoided, and the reliability is greatly improved.

Furthermore, the structural form of the rotor 330 makes the internal structural design of the generator 300 more compact, and the volume and weight are greatly reduced. The permanent magnet generator 300 has the advantages of small volume and light weight, and is convenient for realizing the arrangement of the hybrid power assembly below the vehicle body and reducing the occupation of the internal space of the carriage. The permanent magnet generator 300 also has a good energy saving effect. The structure of the rotor 330 eliminates the excitation power required by the magnetic field of the rotor 330 and the mechanical loss of friction between the carbon brush and the slip ring, so that the efficiency of the permanent magnet generator 300 is greatly improved. The average efficiency of a conventional field generator 300 is only 45% to 55% in the speed range between 1300 rpm and 6000 rpm, whereas a permanent magnet generator 300 can reach 75% to 80%.

The generator 300 adopts a double-bearing and flat permanent magnet generator 300, and the shell 310 adopts low-alloy high-strength steel, so that the overall strength and rigidity of the generator 300 are improved, and the power requirement required by the serial arrangement of the diesel engine 200, the generator 300 and the gearbox 400 is better met.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 4 to 5, an inner ring of the stator 320 is provided with a plurality of stator windings 370, the stator windings 370 include a plurality of flat wire conductors 371 and an insulating layer 372, the plurality of flat wire conductors 371 are located in the housing 310 and sequentially arranged from outside to inside; the insulating layer 372 covers the outer portions of the plurality of flat wire conductors 371. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. In this embodiment, the conductor is a flat wire structure, and four layers are sequentially disposed from the inner ring to the outer ring of the stator 320. The adoption of the flat wire conductor 371 can effectively shorten the length of the stator 320, reduce the occupied space of the generator 300 and simultaneously enable the generator 300 to have higher efficiency.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 3 to fig. 5, the front connection pad 340 and the rear connection pad 350 are diaphragm couplers respectively, and the front connection pad 340 is connected to the main shaft of the rotor 330 through a spline. The diaphragm coupling compensates the relative displacement of the two connected shafts by the elastic deformation of the diaphragm, is a high-performance flexible coupling of a metal strong element, does not need lubricating oil, and has a compact structure. The diesel engine 200 and the generator 300, and the generator 300 and the gearbox 400 are connected by using the diaphragm couplings, so that the power of the whole series path is not interrupted, the energy in the braking process is conveniently stored in the power battery 730, and the waste of the braking energy is avoided.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 3, a first cold water channel is disposed on the diesel engine 200, a second cold water channel 360 is disposed on the generator 300, a third cold water channel is disposed on the transmission 400, the hybrid power assembly further includes a fan and a cold water tank 600, and the cold water tank 600 is communicated with the first cold water channel, the second cold water channel 360 and the third cold water channel. In this embodiment, a cold water tank 600 is provided at a position close to the diesel engine 200 and the generator 300, and a fan is used to cool the cold water in the cold water tank 600. This cold water tank 600 communicates respectively with the first cold water passageway of diesel engine 200, the third cold water passageway of gearbox 400, the second cold water passageway 360 of generator 300 for realize dispelling the heat respectively to a plurality of parts, compare the mode that corresponds diesel engine 200, generator 300 and gearbox 400 and set up cooling module respectively, can effectual reduction occupation space, have efficient thermal management effect, can further realize energy-conserving purpose.

Further, the cold water tank 600 is connected with a hydraulic system on the hybrid power assembly and used for effectively cooling the hydraulic system, so that the cold water tank 600 can fully exert a cooling effect.

Referring to fig. 3, the second cold water channel 360 of the generator 300 is disposed on the housing 310 in a spiral structure formed around the main shaft of the stator 320, so as to effectively increase the contact area between the cold water and the generator 300, thereby facilitating to increase the cooling efficiency and achieving a good energy saving effect.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 2, the hybrid power assembly further includes a frame 100 for connecting with the vehicle body, and the diesel engine 200, the generator 300 and the gearbox 400 are all disposed in the frame 100. In this embodiment, the frame 100 is provided, and the diesel engine 200, the generator 300, the transmission 400, and the like are uniformly placed in the frame 100, so that the whole hybrid powertrain can be quickly mounted on the vehicle body as a whole.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 2, the frame 100 is further provided with a first vibration isolator 110 located between the diesel engine 200 and the generator 300. A silencer 120 is also provided on the frame 100. In the using process, the diesel engine 200 and the generator 300 can generate large noise and vibration in the using process, and the noise silencer 120 can reduce the noise value between the frame 100 and the vehicle body, so that the influence of the noise on passengers in the vehicle is avoided. The setting of first isolator 110 can carry out effectual isolation to the vibration that diesel engine 200 and generator 300 produced, avoids the vibration to passenger's on the car influence, is convenient for improve the travelling comfort of passenger on the way.

The utility model also provides a rail vehicle, include the automobile body and set up in the inside hybrid assembly of automobile body or below. Because the hybrid power device occupies a small volume, the hybrid power device can be conveniently arranged below the vehicle body, and the problem of occupying the internal space of the carriage is avoided.

As a specific implementation manner of the embodiment of the present invention, a second vibration isolator 130 is further disposed between the vehicle body and the hybrid power assembly. Since the diesel engine 200 has a large vibration amplitude during the starting and running processes, in order to ensure the stability of the vehicle body and improve the comfort of passengers, the second vibration isolator 130 is disposed between the frame 100 and the vehicle body, so as to reduce the vibration influence of the internal components of the hybrid power assembly on the upper vehicle body.

The utility model provides a rail vehicle lays the hybrid assembly in the vehicle below, has effectually reduced the occupation space of original power device in the car, has enlarged the inside area of railway carriage. The power assembly can effectively utilize energy in the braking process and convert the energy into electric energy, so that the energy consumption of the diesel engine 200 is reduced, and the power assembly has good energy-saving and emission-reducing effects; the power battery 730 drives the diesel engine 200 to start or assists the diesel engine 200 to drive the transmission 400 when the diesel engine 200 starts and accelerates, so that the acceleration of the vehicle can be increased in a short time, and the power output of the diesel engine 200 can be reduced.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A hybrid powertrain, comprising:

a diesel engine,

the generator is connected with the diesel engine, a converter is further connected to the generator, and the converter is respectively connected with electric equipment and a power battery;

the gearbox is connected with the generator;

and the axle gear box is connected with the gearbox and is connected with a wheel set.

2. A hybrid powertrain as in claim 1, wherein the generator is a permanent magnet generator, the generator comprising:

a housing;

the main shaft is arranged in the shell along the horizontal direction and is provided with a through central hole;

the rotor is arranged in the central hole, one end of the rotor is provided with a front connecting disc used for being connected with the diesel engine, and the other end of the rotor is provided with a rear connecting disc used for being connected with the gearbox.

3. A hybrid powertrain according to claim 2, wherein the inner race of the stator is provided with a plurality of stator windings, the stator windings comprising:

the flat wire conductors are positioned in the shell and are sequentially arranged from outside to inside; and

and the insulating layer is coated outside the plurality of flat wire conductors.

4. The hybrid powertrain of claim 2, wherein the front connection disc and the rear connection disc are diaphragm couplings, respectively, and the front connection disc is connected to the main shaft of the rotor by a spline.

5. The hybrid powertrain according to claim 1, wherein the diesel engine is provided with a first cold water passage, the generator is provided with a second cold water passage, the transmission is provided with a third cold water passage, and the hybrid powertrain further comprises a fan and a cold water tank, the cold water tank being respectively communicated with the first cold water passage, the second cold water passage and the third cold water passage.

6. A hybrid powertrain according to claim 1, further comprising a frame for attachment to a vehicle body, the diesel engine, generator and gearbox being disposed within the frame.

7. A hybrid powertrain as in claim 6, wherein the frame further includes a first vibration isolator disposed between the diesel engine and the generator.

8. A hybrid powertrain as in claim 6, wherein the frame further includes a muffler.

9. A rail vehicle comprising a vehicle body and a hybrid powertrain according to any one of claims 1 to 8 disposed in or beneath the vehicle body.

10. The rail vehicle of claim 9, wherein a second vibration isolator is disposed between the body and the hybrid powertrain.

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