New energy automobile mechanical transmission electromechanical coupling combined power generation system and automobile

Abstract

A mechanical transmission electromechanical coupling combined power generation system of a new energy automobile is characterized by comprising a double-shaft driving motor (2), the double-shaft driving motor (2) is connected with a gearbox (3), the gearbox (3) is connected with a generator set (5) through a transfer case (4), and electric energy generated by the generator set (5) supplies power to vehicle-mounted equipment. The double-shaft driving motor, the gearbox, the transfer case and the generator are in transmission and synchronously run at the rotating speed, the electromechanical coupling transmission combined cycle power generation technology is achieved, obtained electric energy is used for supplying power to vehicle-mounted equipment, the load of a power storage battery is reduced, the charging frequency of the storage battery is reduced, and the cruising ability of the vehicle is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicles, and in particular to a new energy vehicle mechanical transmission electromechanical coupling combined power generation system and a vehicle. Background Art

[0002] The existing new energy pure electric vehicle technology consists of a power system composed of power batteries, electronic control systems, and motors. It lacks a mechanical transmission and power generation mutual circulation system. Some of them are nominally extended-range power generation, with low conversion power. The immature power generation technology leads to low endurance of electric vehicles, which is completely inconsistent with the actual design mileage. Although hybrid vehicles can solve a certain endurance, they have advantages and disadvantages. For example, the following hybrid systems, oil-electric hybrid, natural gas new energy hybrid vehicles, and methanol vehicles are more or less carried out under the premise of polluting the environment. If energy conservation and emission reduction are not achieved, real environmental protection cannot be achieved. Among the existing pure electric new energy vehicle technologies, electronic control technology, power batteries, and motor three-electric systems are relatively mature. The existing electromechanical coupling technology is only widely used in hybrid new energy vehicles. The endurance is not very ideal, and the on-board generator system is not perfect. The increase in the number of charging times for the power battery leads to the decline in the service life of the power battery. If the existing transmission structure of the new energy vehicle is not changed, it is not enough to rely solely on the mature three-electric system to increase the vehicle's endurance, because increasing the mileage requires increasing the weight of the power battery, and the endurance will continue to shorten with time, and repeated charging will cause the power battery to decline in life in advance. In order to increase the endurance, it is necessary to build too many charging stations to meet the large demand for vehicles. However, it is impossible to achieve the effect of automatic charging of vehicles, which wastes too much manpower and financial resources and is not conducive to economic development.

[0003] Chinese patent CN114789651A discloses an electromechanical coupling transmission device and a car, wherein the engine and the first motor are not used to drive the car wheels to rotate, and the range extender can provide electricity for the second motor to drive the car wheels to rotate, thereby making the car equivalent to a pure electric car and reducing the exhaust emissions of the car. Its structure is relatively complex and cannot improve the service life of the power battery. Summary of the invention

[0004] The purpose of the present invention is to provide a new energy vehicle mechanical transmission electromechanical coupling combined power generation system. The generated electricity is directly used to power vehicle-mounted equipment without being stored in a battery, thereby increasing the mileage and endurance of the original electric vehicle and improving the service life of the power battery. A vehicle using the new energy vehicle mechanical transmission electromechanical coupling combined power generation system is also provided.

[0005] The technical solution of the present invention is a new energy vehicle mechanical transmission electromechanical coupling combined power generation system, including a dual-axis drive motor, the dual-axis drive motor is connected to a gearbox, the gearbox is connected to a generator set through a transfer case, and the electric energy generated by the generator set is used as a secondary power source to power the vehicle's on-board equipment.

[0006] The transfer case connected to the dual-shaft drive motor via the gearbox adopts a synchronous bevel gear transfer case, and the synchronous bevel gear transfer case is connected to more than one generator as a generator set.

[0007] The synchronous bevel gear transfer case is a 3-axis or 4-axis synchronous bevel gear transfer case, and each output shaft of the synchronous bevel gear transfer case is respectively connected to a generator as a generator set.

[0008] When the automobile adopts a wheel-side motor or a hub motor, the dual-axis drive motor is firstly driven through a transmission mechanism, the input shaft of the transmission mechanism is connected to the automobile wheel hub rotating shaft, the output shaft of the transmission mechanism is connected to the gearbox, and the gearbox is connected to the generator set through a transfer case.

[0009] When the automobile is a truck or a bus, the generator set is connected to a gas pressure energy storage cycle power generation system, which includes an air compressor, which is connected to an air storage tank through a pipeline, and the air storage tank is connected to an air motor through a pipeline, and the air motor is connected to a generator.

[0010] The air storage tank is connected to a filter, a pressure regulating valve and an oil mist separator in sequence through pipelines, and then connected to a pneumatic motor.

[0011] The pneumatic motor is first connected to the transfer case, and the transfer case is connected to the generator.

[0012] The output of the generator set adopts a dual power supply control structure circuit. Each generator output of the generator set is connected to two sets of mutual inductors, AC contactors, inductors and capacitors to form a dual circuit, and then connected to the input AC power rectifier. The AC power rectifier is connected to a DC power integrated controller.

[0013] It also includes installing photovoltaic panels on the roof or hood of the car, which charge the car through a photovoltaic power generation system.

[0014] A vehicle of the present invention comprises the above-mentioned new energy vehicle mechanical transmission electromechanical coupling combined power generation system.

[0015] The beneficial effects of the present invention are as follows: the dual-axis drive motor, gearbox and transfer case of the present invention are driven and rotated synchronously to realize the cycle power generation technology with electromechanical coupling transmission, and the obtained electric energy is used as a secondary power source without passing through the battery storage, which is used to power the vehicle-mounted equipment, reduce the number of charging times of the power battery, and improve the endurance of the vehicle. According to different vehicle models, different transmission systems such as transmissions and transfer cases are adopted, which are adapted to various front and rear drive chassis mounting structures, and can be applied to various vehicle models, such as two-wheeled electric vehicles, motorcycles, three-wheeled electric vehicles, large, medium and small trucks, buses and RVs, as well as heavy truck cold chain vehicles, trailers and other series of models. For models with large body space and high electricity demand, such as large trucks, heavy truck cold chain vehicles, trailers, etc., it can also integrate air pressure cycle power generation technology, perform gas-to-electricity conversion, and improve the power consumption capacity of the vehicle. It can also be automatically charged through photovoltaic power generation under light conditions, saving time for manual charging. When the vehicle is parked outdoors or driving slowly, the vehicle battery is automatically charged, increasing the vehicle endurance and reducing the number of manual charging times. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a T-type synchronous 3-axis transfer case used in the present invention; Figure 2 This is a schematic diagram of the structure of a T-type synchronous 4-axis transfer case used in the present invention; Figure 3 This is a schematic diagram of the structure of a double T-type synchronous 6-axis transfer case used in the present invention; Figure 4 This is a schematic diagram of the structure of the gear shaft transfer case used in the present invention; Figure 5 This is a schematic diagram of the installation of a T-type synchronous 3-axis transfer case used in the present invention; Figure 6 This is a schematic diagram of the gas pressure energy storage cycle power generation system of the present invention; Figure 7 This is a schematic diagram of the installation of the gas pressure energy storage cycle power generation system of the present invention; Figure 8 It is a schematic diagram of the installation of the photovoltaic power generation panel of the van of the present invention; Fig. 9 This is a schematic diagram of the structure of the present invention when a hub motor and gear transmission are used; Fig.10 This is a schematic diagram of the structure of the present invention when a hub motor and shaft transmission are used; Fig.11 This is a circuit schematic diagram of the present invention using a single generator dual power supply control; Fig.12 This is a schematic diagram of the transmission mechanism structure when the present invention adopts shaft transmission. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the embodiments, but they are not intended to limit the present invention. Example

[0018] A new energy vehicle mechanical transmission electromechanical coupling combined power generation system includes a dual-axis drive motor 2, the dual-axis drive motor 2 is connected to a gearbox 3, the gearbox 3 is connected to a generator set 5 through a transfer case 4, and the electric energy generated by the generator set 5 is used as a secondary power source to power the vehicle's on-board equipment without being stored in a battery, thereby reducing the number of times the power battery is charged.

[0019] The DC and AC voltages of the generator set 5 in this system can be selected according to the vehicle-mounted equipment and economic value. The generator speed of the generator set 5 is constant, so the dual-axis drive motor 2 and the generator set 5 cannot be directly assembled and connected. The gearbox 3 needs to be connected to the generator set 5 through the transfer case 4 to run at a synchronous speed. Because when the vehicle speed reaches 120 kilometers per hour, the maximum speed of the dual-axis drive motor 2 can reach more than 10,000 revolutions. In the electromechanical coupling technology, the synchronization of the maximum speed of the gearbox 3 design and the rated speed of the generator set 5 is a key factor. Excessive speed needs to be reduced to be transmitted to the generator set 5. The maximum speed ratio of the gearbox 3 should be synchronized with the transfer case 4 and the maximum speed of the generator set is 1:1:1. When the vehicle speed is between 15 and 20 kilometers per hour, the gearbox 3 drives the transfer case 4, and the transfer case 4 connects the generator set 5 to enter a uniform speed power generation working state. The main function of the gearbox 3 is to automatically adjust the transmission speed ratio from the dual-axis drive motor 2 output that is too high. Excessive speed will cause damage to the generator set 5. The gearbox 3 can be selected from ordinary gearboxes and electronic hydraulic automatic gearboxes according to the configuration of the vehicle. When the maximum speed of the dual-axis drive motor 2 is 10,000 rpm during vehicle driving, the designed maximum speed of the gearbox 3 is synchronized with the generator. When the minimum speed of the dual-axis drive motor 2 is 300 rpm during vehicle driving, the generator set 5 enters the power generation working state. Example

[0020] The transfer case 4 connected to the dual-axis drive motor 2 via the gearbox 3 is a synchronous bevel gear transfer case, and the synchronous bevel gear transfer case is connected to more than one generator as a generator set 5.

[0021] When the automobile adopts a drive axle structure, the synchronous bevel gear transfer case is a 3-axis or 4-axis synchronous bevel gear transfer case, and each output shaft of the synchronous bevel gear transfer case is respectively connected to a generator as a generator set 5. The synchronous bevel gear transfer case is mainly composed of more than three bevel gears, an input and output shaft, more than two input shafts, bearings and a housing, such as Figure 1-5 As shown, the transfer case 4 can adopt a T-type synchronous 3-axis transfer case, a T-type synchronous 4-axis transfer case, a double T-type synchronous 6-axis transfer case, a double T-type synchronous 8-axis transfer case, a gear shaft transfer case and other structures, and can be selected according to the size of the vehicle model and power requirements. Example

[0022] When the automobile does not use a drive axle structure but uses a wheel motor or a hub motor, the dual-axis drive motor 2 is first driven by a transmission mechanism 8, the input shaft of the transmission mechanism 8 is connected to the automobile wheel hub rotating shaft, the output shaft of the transmission mechanism 8 is connected to the gearbox 3, and the gearbox 3 is connected to the generator set 5 through the transfer case 4. When the transmission mechanism 8 uses gear transmission, the structure is as follows Fig. 9 As shown, when the transmission mechanism 8 adopts shaft transmission, the structure is as follows Fig.10 , 12 As shown, the transmission mechanism 8 includes a driven gear 801, the driven gear 801 is connected to the driving gear 802, the driving gear 802 is connected to the driving bevel gear 804 through the bearing 803, the driving bevel gear 804 is connected to the driven bevel gear 805, the driven bevel gear 805 is connected to the gearbox 3, the transfer case 4 and the generator set 5, and the driven gear 801 is connected to the wheel hub motor of the car. Example

[0023] When the vehicle is a truck or a bus, the generator set 5 is connected to the air pressure energy storage cycle power generation system 6, which includes an air compressor 601, which is connected to an air storage tank 602 through a pipeline, which is connected to an air motor 603 through a pipeline, and which is connected to a generator. Further, the air storage tank 602 is connected to a filter 604, a pressure regulating valve 605, and an oil mist separator 606 in sequence through a pipeline, and then connected to the air motor 603. Figure 6 and 7 As shown. Figure 7 The figure only shows the schematic diagram of the configuration of the gas pressure energy storage cycle power generation system 6. The specific configuration needs to be designed in detail according to the vehicle model, chassis space, power generation, etc.

[0024] The pneumatic motor 603 is first connected to the transfer case 607, and the transfer case 607 is connected to the generator.

[0025] For vehicles with high power consumption, the air pressure cycle power generation technology can be integrated. For example, cold chain trucks, ordinary trucks, and large cargo and trailer vehicles are affected by road conditions and load. When they are in a slow state for a long time, the power generation will drop sharply. When the vehicle is under heavy load and there is no generator power supply, the internal consumption of the power battery will be too fast. In order to compensate for this situation, it is necessary to combine the electromechanical coupling technology and the gas-to-electric conversion technology, and install the air pressure energy storage cycle power generation system 6 in the spatial position of the chassis to perform gas-to-electric conversion technology. According to the different chassis space of various trucks and the choice of on-board power consumption, the number of generators connected to the transfer case 4 can be reduced, and the number of energy storage air pressure generators connected to the pneumatic motor 603 can be increased, depending on the actual situation of the vehicle. The working principle of the pneumatic energy storage cycle power generation system 6 is that when the vehicle is operating normally, a group of power sources is selected to charge the on-board air compressor 601 for energy storage when the power generation capacity of the electromechanical coupling transmission generator set 5 is sufficient. The air is compressed by the air compressor 601 to generate a certain pressure to store the air in the air tank 602, and then a certain proportion of high-pressure gas is released through the pipeline control system such as the filter 604, the pressure regulating valve 605 and the oil mist separator 606 to connect the air motor 603 through the valve body and the control pipeline. The transmission shaft of the air motor 603 can be directly connected to the magnetic levitation generator, or it can be connected to the transfer case 607 and then connected to multiple magnetic levitation generators. It is reasonably arranged according to the chassis space of the vehicle. In the pneumatic energy storage transmission technology, the air tank 602 can be used alone, or the capacity of the brake system air tank 602 can be increased. Parallel intelligent linkage control is adopted. The torque and speed of the pneumatic motor 603 are automatically controlled by air pressure reduction regulation. There is no need for a gearbox between the pneumatic motor 603 and the generator, and they can be directly installed. The corresponding number of generators is matched according to the power consumption requirements. The magnetic levitation generator is selected for its light torque and large power generation. In order to stabilize and effectively drive the driving force, the torque of the pneumatic motor 603 must be greater than one-third of the torque of the magnetic levitation generator. The magnetic levitation generator forms a stable power generation system under the mechanical drive of the pneumatic motor 603. Each vehicle of the magnetic levitation generator is designed to be AC ​​380V 10 to 20KW, and the number of generators is 2 or 4, which is specifically set according to the chassis space of the car. The electricity generated by the magnetic levitation generator is rectified by a rectifier and directly connected in parallel with the DC power supply integrated controller matched with the new energy vehicle. Such a design can reduce the amount of battery assembly. Due to the increase in secondary current, the original battery reduces the number of charging times, prolongs the battery life, and increases the vehicle-mounted endurance by three to five times without increasing the battery capacity. In the pneumatic transmission power generation device, the excellent characteristics of the magnetic levitation generator with light torque and high power generation efficiency are fully utilized, and they are combined to form a gas-electric conversion cycle power generation technology. On the basis of the original battery power supply, another matching power generation system is added to form a secondary voltage and current propulsion technology. The advantage of this technology is that it can extend the vehicle's endurance by 3-5 times and extend the battery's service life without increasing the number of batteries. Example

[0026] The output of the generator set 5 adopts a dual power supply control structure circuit. The output of each generator 501 of the generator set 5 is respectively connected to two sets of mutual inductors 502, AC contactors 503, reactors 504 and capacitors 505 to form a double circuit, and then connected to the input AC power rectifier 506. The AC power rectifier 506 is connected to the DC power integrated controller 507. Fig.11 As shown, the structure is similar when two or three generators are used.

[0027] In order to improve the stability and safety of power generation efficiency, an overvoltage, overcurrent, phase loss and leakage protection function needs to be set in the AC circuit of the generator set. According to the matching of the corresponding reactor and capacitor of the generator set, in order to prevent the reactor and capacitor in the line from being damaged during normal use and affecting the line failure, a dual power supply control structure circuit is set. The specific control principle is to control the operation of two AC contactor coils through a current sensing switch, design a set of normal working lines and a set of standby lines, and the dual-circuit distribution line mainly ensures the stability of the voltage and current between the generator and the rectifier. If any problem occurs, the contactor is switched instantly to ensure the normal operation of the circuit. The above generator set 5 is designed for AC power. The voltage to be used is to be determined between 220V and 380V according to the vehicle model. If the generator set 5 needs to be converted into DC power, it should be matched with the corresponding AC-DC conversion equipment and then connected to the vehicle circuit. Example

[0028] It also includes setting a photovoltaic panel 7 on the roof or hood of the car. The photovoltaic panel 7 charges the car through a photovoltaic power generation system. The photovoltaic power generation system is implemented using existing products and technologies to further increase electrical energy for the car. Example

[0029] The present invention provides a car, including the above-mentioned new energy car mechanical transmission electromechanical coupling combined power generation system. According to the drive axle structure, or the wheel side motor, or the hub motor structure adopted by the car, the corresponding dual-axis drive motor 2, gearbox 3 and transfer case 4 are selected, or the transmission mechanism 8 is selected, and then connected to the generator set 5 for power generation. According to the size of the car model, the transfer case 4 can choose a T-type synchronous 3-axis transfer case, a T-type synchronous 4-axis transfer case, a double T-type synchronous 6-axis transfer case, a double T-type synchronous 8-axis transfer case, a gear shaft transfer case and other structures, corresponding to the space and installation of different car chassis.

[0030] When the automobile is a truck or a bus, a gas pressure energy storage cycle power generation system 6 can be added to meet high-power electricity demand.

[0031] The electromechanical coupling combined power generation technology of the present invention is to connect one end of the dual-shaft dual-drive motor 2 to the drive axle and the other end to the gearbox 3. According to the space position of the chassis of the new energy vehicle, two installation structures can be selected: a synchronous bevel gear transfer case with the generator speed and a synchronous shaft gear transfer case horizontally opposite to the generator set 5. There are two specific transmission structure arrangement orders of the electromechanical coupling combined power generation technology. The synchronous bevel gear transfer case and the synchronous shaft gear transfer case are mainly separated from one input shaft to more than three transmission output shafts. The specific positions of the transfer case 4 and the generator set 5 are configured according to the chassis design space of the vehicle model.

[0032] In the electromechanical coupling technology, a bypass power generation line is added without changing the original line to form a secondary power supply system that matches the vehicle. The addition of the bypass power supply system can slow down the decline of the vehicle battery power, reduce the number of battery charging times, increase the vehicle endurance and increase the battery life. The electricity generated by the generator cannot be used to directly charge the power battery, because repeated charging during the vehicle driving license is an extreme challenge to the battery life. In principle, it is not allowed to charge while driving. Instead, it is converted into a matching direct current through a rectifier and connected in parallel with an integrated controller. Such a power supply line system forms a secondary current propulsion technology, which can increase the vehicle's unlimited endurance without increasing the battery capacity. This electromechanical coupling is suitable for the production and technical transformation of various vehicle models with a load capacity of less than 100 tons, and is suitable for various models, including ordinary commercial buses, buses, large heavy trucks, coaches, and RVs. This technology can be used alone or in combination with two systems of an automatic charging photovoltaic system. The power generation system is configured according to the power consumption of the vehicle drive motor and the on-board equipment.

Claims

1. A new energy vehicle mechanical transmission electromechanical coupling combined power generation system, characterized in that: The invention comprises a dual-shaft drive motor (2), wherein the dual-shaft drive motor (2) is connected to a gearbox (3), and the gearbox (3) is connected to a generator set (5) via a transfer case (4). The electric energy generated by the generator set (5) is used as a secondary power source to supply power to on-board equipment of the vehicle.

2. The new energy automobile mechanical transmission electromechanical coupling combined power generation system according to claim 1 is characterized in that: The transfer case (4) to which the dual-shaft drive motor (2) is connected via a gearbox (3) is a synchronous bevel gear transfer case, and the synchronous bevel gear transfer case is connected to one or more generators as a generator set (5).

3. The new energy automobile mechanical transmission electromechanical coupling combined power generation system according to claim 2 is characterized in that: The synchronous bevel gear transfer case is a three-shaft or four-shaft synchronous bevel gear transfer case, and each output shaft of the synchronous bevel gear transfer case is respectively connected to a generator as a generator set (5).

4. The new energy automobile mechanical transmission electromechanical coupling combined power generation system according to claim 1 is characterized in that: When the automobile adopts a wheel-side motor or a wheel hub motor, the dual-shaft drive motor (2) is firstly driven by a transmission mechanism (8), the input shaft of the transmission mechanism (8) is connected to the automobile wheel hub rotating shaft, the output shaft of the transmission mechanism (8) is connected to the gearbox (3), and the gearbox (3) is connected to the generator set (5) via a transfer case (4).

5. The new energy automobile mechanical transmission electromechanical coupling combined power generation system according to claim 1 is characterized in that: When the automobile is a truck or a bus, the generator set (5) is connected to a gas pressure energy storage cycle power generation system (6), the gas pressure energy storage cycle power generation system (6) comprises an air compressor (601), the air compressor (601) is connected to an air storage tank (602) via a pipeline, the air storage tank (602) is connected to an air motor (603) via a pipeline, and the air motor (603) is connected to a generator.

6. The new energy automobile mechanical transmission electromechanical coupling combined power generation system according to claim 5 is characterized in that: The air storage tank (602) is connected to a filter (604), a pressure regulating valve (605) and an oil mist separator (606) in sequence through pipelines, and then connected to a pneumatic motor (603).

7. The new energy automobile mechanical transmission electromechanical coupling combined power generation system according to claim 5 is characterized in that: The pneumatic motor (603) is first connected to the transfer case (607), and the transfer case (607) is connected to the generator.

8. The new energy automobile mechanical transmission electromechanical coupling combined power generation system according to claim 1 is characterized in that: The output of the generator set (5) adopts a dual power supply control structure circuit, and the output of each generator (501) of the generator set (5) is respectively connected to two sets of mutual inductors (502), AC contactors (503), reactors (504) and capacitors (505) to form a dual circuit, which is then connected to an input AC power rectifier (506), and the AC power rectifier (506) is connected to a DC power integrated controller (507).

9. The new energy automobile mechanical transmission electromechanical coupling combined power generation system according to claim 1 is characterized in that: The method also includes arranging a photovoltaic panel (7) on the roof or hood of the car, wherein the photovoltaic panel (7) charges the car through a photovoltaic power generation system.

10. An automobile, characterized in that: A new energy vehicle mechanical transmission electromechanical coupling combined power generation system comprising any one of claims 1 to 9.

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