CN115091939A - Vehicle driving system and method and vehicle - Google Patents
Vehicle driving system and method and vehicle Download PDFInfo
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- CN115091939A CN115091939A CN202211029598.8A CN202211029598A CN115091939A CN 115091939 A CN115091939 A CN 115091939A CN 202211029598 A CN202211029598 A CN 202211029598A CN 115091939 A CN115091939 A CN 115091939A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/30—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by chargeable mechanical accumulators, e.g. flywheels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The application relates to the technical field of vehicles, and particularly discloses a vehicle driving system and method and a vehicle, wherein the system comprises a driving motor, an energy conversion system, a clutch and a main controller, wherein the driving motor is connected with a wheel; the energy conversion system comprises a rotary drum, a flywheel and a speed regulation assembly, wherein the rotary drum can drive the flywheel to rotate, and the speed regulation assembly can regulate the speed ratio of the rotary drum and the flywheel; the clutch is connected with the driving motor and the rotary drum; the main controller is used for controlling the clutch to be closed when the vehicle decelerates, so that the rotary drum rotates under the driving of the driving motor and drives the flywheel to rotate, and meanwhile, the speed regulating assembly is controlled to reduce the speed ratio of the rotary drum and the flywheel to store energy; when the vehicle is accelerated, the clutch is controlled to be closed, so that the rotary drum is driven by the driving motor to rotate and drive the flywheel to rotate, and meanwhile, the speed regulating assembly is controlled to improve the speed ratio of the rotary drum and the flywheel to release energy. Therefore, the energy can be efficiently stored when the vehicle is decelerated and stopped, the energy can be efficiently released when the vehicle is accelerated and started, and the battery is not required to be charged or discharged.
Description
Technical Field
The application relates to the technical field of vehicles, in particular to a vehicle driving system and method and a vehicle.
Background
The existing urban road condition vehicles, such as buses and the like, often need to stop and start frequently. Particularly, for a vehicle adopting hybrid electric or pure electric drive, because the vehicle frequently works in a large-load starting state and a high-strength deceleration braking state, the battery needs to be rapidly charged and discharged frequently, the service life of the battery is greatly shortened, and the cost of a driving system is increased.
Disclosure of Invention
In view of the above, it is necessary to provide a vehicle drive system, a vehicle, and a vehicle drive method in view of the above problems.
According to a first aspect of embodiments of the present application, there is provided a vehicle drive system including:
the driving motor is connected with the wheels;
the energy conversion system comprises a rotary drum, a flywheel and a speed regulation component which are assembled in a matched mode, the rotary drum can drive the flywheel to rotate, and the speed regulation component can adjust the speed ratio of the rotary drum and the flywheel;
a clutch connecting the drive motor and the drum;
the main controller is connected with the clutch and the speed regulation assembly and is used for: when the vehicle decelerates, the clutch is controlled to be closed, so that the rotary drum rotates under the driving of the driving motor and drives the flywheel to rotate, and meanwhile, the speed regulating assembly is controlled to reduce the speed ratio of the rotary drum and the flywheel so as to store energy; and when the vehicle is accelerated, the clutch is controlled to be closed, so that the rotary drum is driven by the driving motor to rotate and drive the flywheel to rotate, and meanwhile, the speed regulating assembly is controlled to improve the speed ratio of the rotary drum and the flywheel so as to release energy.
In one embodiment, the rotary drum and the flywheels are both in a conical structure, the flywheels are symmetrically arranged on two sides of the rotary drum along the central axis of the rotary drum, and the inclination directions of conical surfaces of the rotary drum and the adjacent flywheels are kept consistent;
the speed regulation assembly comprises a speed regulation ring, the friction coefficient of the speed regulation ring is higher than a preset value, the speed regulation ring is arranged around the periphery of the conical surface of each flywheel, and the speed regulation ring is in contact with the rotary drum and the flywheel at the gap between the flywheel and the rotary drum.
In one embodiment, the predetermined value includes any value from 0.05 to 0.1.
In one embodiment, the speed regulation assembly further comprises a driving member and a linkage member, the linkage member is connected with each speed regulation ring and used for keeping the fixed relative position of each speed regulation ring, and the driving member can drive each speed regulation ring to move along the inclined direction of the conical surface of the flywheel;
when each speed regulating ring moves from the first end to the second end of the flywheel, the speed ratio of the rotary drum to the flywheel is gradually reduced, and when each speed regulating ring moves from the second end to the first end of the flywheel, the speed ratio of the rotary drum to the flywheel is gradually increased.
In one embodiment, the number of the flywheels is two, the two flywheels are symmetrically arranged on two sides of the rotary drum along the central axis of the rotary drum, and one speed adjusting ring is arranged around the periphery of the conical surface of each flywheel.
In one embodiment, the material of the drum comprises any one or more of aluminum alloy, magnesium alloy and carbon fiber.
In one embodiment, the material of the flywheel has a density greater than 7.9 tons/cubic meter.
In one embodiment, the vehicle driving system further includes a solar panel, an inverter, a battery, and a motor controller, the motor controller is connected to the driving motor, the inverter includes a first input terminal, a second input terminal, a first output terminal, and a second output terminal, the first input terminal is connected to the commercial power, the second input terminal is connected to the solar panel, the first output terminal is connected to the battery, the second output terminal is connected to the motor controller, and the battery is connected to the motor controller.
According to a second aspect of the embodiments of the present application, there is provided a vehicle including the vehicle drive system described above.
According to a third aspect of the embodiments of the present application, there is provided a vehicle driving method applied to a vehicle driving system, where the vehicle driving system includes a driving motor and an energy conversion system, the energy conversion system includes a rotating drum, a flywheel and a speed regulation component, the rotating drum is assembled in cooperation with the driving motor through a clutch; the method comprises the following steps:
detecting a driving state of a vehicle;
when the deceleration of the vehicle is detected, controlling the clutch to be closed so that the rotary drum rotates under the driving of the driving motor and drives the flywheel to rotate, and simultaneously controlling the speed regulating assembly to reduce the speed ratio of the rotary drum and the flywheel so as to store energy;
when the vehicle is detected to be accelerated, the clutch is controlled to be closed, so that the rotary drum rotates under the driving of the driving motor and drives the flywheel to rotate, and meanwhile, the speed regulating assembly is controlled to improve the speed ratio of the rotary drum and the flywheel so as to release energy.
The vehicle driving system, the vehicle and the vehicle driving method are provided with the energy conversion system, the energy conversion system comprises a rotary drum, a flywheel and a speed regulation assembly which are assembled in a matched mode, and the rotary drum is connected with a driving motor through a clutch. When the vehicle decelerates, the main controller can control the clutch to be closed, the rotary drum rotates under the driving of the driving motor and drives the flywheel to rotate, the main controller simultaneously controls the speed regulating assembly to reduce the speed ratio of the rotary drum and the flywheel, namely, the rotary drum decelerates and rotates, the flywheel accelerates and rotates, namely, energy is stored to the flywheel through the driving motor, the clutch and the rotary drum, and energy storage is realized; when the vehicle accelerates, the main controller can control the clutch to be closed, the rotary drum rotates under the driving of the driving motor and drives the flywheel to rotate, the main controller simultaneously controls the speed regulating assembly to improve the speed ratio of the rotary drum and the flywheel, namely, the flywheel decelerates and rotates, the rotary drum accelerates and rotates, energy is released to the driving motor through the flywheel, the rotary drum and the clutch, and energy release is achieved. Therefore, energy can be stored quickly and efficiently when the vehicle is decelerated and stopped, energy can be released quickly and efficiently when the vehicle is accelerated and started, the battery does not need to be charged or discharged when the vehicle is stopped and started, the burden of the battery is reduced, and meanwhile, the vehicle driving system simplifies the energy conversion process and improves the energy conversion efficiency.
Drawings
FIG. 1 is a block diagram of a vehicle drive system provided in an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a vehicle drive system according to an embodiment of the present application;
fig. 3 is a flowchart of a vehicle driving method according to an embodiment of the present application.
Description of reference numerals:
100. a drive motor; 110. a transmission; 111. a drive axle;
200. an energy conversion system; 210. rotating the drum; 220. a flywheel; 230. a speed regulation component; 231. a speed regulating ring; 232. a drive member; 233. a linkage member;
300. a clutch;
400. a main controller;
500. a motor controller;
610. a solar panel; 620. an inverter; 621. a first input terminal; 622. a second input terminal; 623. a first output terminal; 624. a second output terminal; 630. a battery.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are given in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.
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 at least one of the feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As described in the background art, at present, urban buses need frequent stopping and starting, and particularly for oil-electric hybrid or pure electric driven vehicles, frequent working in a heavy load starting state and a high-strength deceleration braking state can cause frequent rapid charging and discharging of a battery, which can greatly shorten the service life of the battery and increase the cost of a driving system.
In order to solve the above problem, embodiments of the present application provide a vehicle drive system, a vehicle, and a vehicle drive method.
Referring to fig. 1, in one embodiment, a vehicle drive system is provided, including a drive motor 100, an energy conversion system 200, a clutch 300, and a main controller 400. Wherein:
the driving motor 100 is connected to the wheel and can be used to drive the wheel to rotate. Specifically, referring to fig. 2, a transmission 110 and a drive axle 111 may be disposed between the driving motor 100 and the wheels, and the driving motor 100 is connected to the wheels through the transmission 110 and the drive axle 111 to drive the wheels to rotate.
The energy conversion system 200 comprises a rotating drum 210, a flywheel 220 and a speed regulation assembly 230 which are assembled in a matched mode, the rotating drum 210 rotates to drive the flywheel 220 to rotate, and the speed regulation assembly 230 can regulate the speed ratio of the rotating drum 210 and the flywheel 220. When the rotating drum 210 rotates, the flywheel 220 can be driven to rotate by a friction pair between the rotating drum and the flywheel 220. The speed ratio of the rotating drum 210 to the flywheel 220 refers to a ratio of the rotating speed of the rotating drum 210 to the rotating speed of the flywheel 220, and the manner of adjusting the speed ratio of the rotating drum 210 to the flywheel 220 by the speed adjusting assembly 230 may include increasing the speed ratio of the rotating drum 210 to the flywheel 220, that is, increasing the rotating speed of the rotating drum 210 and decreasing the rotating speed of the flywheel 220, and may also include decreasing the speed ratio of the rotating drum 210 to the flywheel 220, that is, decreasing the rotating speed of the rotating drum 210 and increasing the rotating speed of the flywheel 220.
The main controller 400 connects the clutch 300 and the governor assembly 230 for: when the vehicle decelerates, the clutch 300 is controlled to be closed, so that the rotary drum 210 rotates under the driving of the driving motor 100 and drives the flywheel 220 to rotate, and meanwhile, the speed regulating assembly 230 is controlled to reduce the speed ratio of the rotary drum 210 and the flywheel 220 to store energy; and controlling the clutch 300 to be closed when the vehicle accelerates, so that the rotary drum 210 rotates under the driving of the driving motor 100 and drives the flywheel 220 to rotate, and simultaneously controlling the speed regulating assembly 230 to increase the speed ratio of the rotary drum 210 and the flywheel 220 to release energy.
The vehicle driving system provided by the embodiment is provided with an energy conversion system 200, which includes a rotating drum 210, a flywheel 220 and a speed regulation assembly 230 that are assembled in a mutually matched manner, wherein the rotating drum 210 is connected with the driving motor 100 through a clutch 300. When the vehicle decelerates, the main controller 400 can control the clutch 300 to close, at this time, the rotating drum 210 rotates under the driving of the driving motor 100 and drives the flywheel 220 to rotate, the main controller 400 simultaneously controls the speed regulating assembly 230 to reduce the speed ratio of the rotating drum 210 and the flywheel 220, namely, the rotating drum 210 decelerates to rotate, the flywheel 220 accelerates to rotate, namely, energy is stored in the flywheel 220 through the driving motor 100, the clutch 300 and the rotating drum 210, so as to realize energy storage; when the vehicle is accelerated, the main controller 400 can control the clutch 300 to be closed, at this time, the rotating drum 210 rotates under the driving of the driving motor 100 and drives the flywheel 220 to rotate, the main controller 400 simultaneously controls the speed regulating assembly 230 to improve the speed ratio of the rotating drum 210 and the flywheel 220, namely, the flywheel 220 decelerates to rotate, the rotating drum 210 accelerates to rotate, and energy is released to the driving motor 100 through the flywheel 220, the rotating drum 210 and the clutch 300 to realize energy release. Therefore, energy can be stored quickly and efficiently when the vehicle decelerates and stops, energy can be released quickly and efficiently when the vehicle accelerates and starts, the battery 630 does not need to be charged or discharged when the vehicle stops and starts, the burden of the battery 630 is relieved, and meanwhile, the vehicle driving system simplifies the energy conversion process and improves the energy conversion efficiency.
Referring to fig. 2, in one embodiment, the rotating drum 210 and the flywheel 220 are both conical structures, the flywheels 220 are symmetrically arranged on two sides of the rotating drum 210 along the central axis of the rotating drum 210, and the inclination directions of the conical surfaces of the rotating drum 210 and the adjacent flywheels 220 are consistent;
the speed adjusting assembly 230 includes a speed adjusting ring 231, the friction coefficient of the speed adjusting ring 231 is higher than a preset value, and the speed adjusting ring 231 is disposed around the conical surface of each flywheel 220 and contacts with the rotating drum 210 and the flywheel 220 at the gap between the flywheel 220 and the rotating drum 210.
Specifically, the conical surface of the rotating drum 210 is disposed close to the conical surfaces of the flywheels 220 on both sides, the inclination directions of the conical surfaces of the rotating drum 210 facing the flywheels 220 are parallel, and the central axis of the rotating drum 210 is parallel to the central axis of the flywheels 220. Taking the end with the narrower cone as the top end and the end with the wider cone as the bottom end as an example, the top end of the rotating drum 210 is disposed near the bottom end of the flywheel 220, and the bottom end of the rotating drum 210 is disposed near the top end of the flywheel 220. A gap is left between the rotating drum 210 and the adjacent flywheel 220, the speed adjusting ring 231 can penetrate through the gap and is sleeved on the periphery of the conical surface of the flywheel 220, and the gap between the flywheel 220 and the rotating drum 210 is in contact with the rotating drum 210 and the flywheel 220, namely, the outer circumferential surface of the speed adjusting ring 231 is in contact with the rotating drum 210, and the inner circumferential surface of the speed adjusting ring 231 is in contact with the flywheel 220. Because the speed adjusting ring 231 has a friction coefficient higher than a preset value, two sets of inner and outer friction pairs are formed between the speed adjusting ring 231 and the rotary drum 210 and between the speed adjusting ring 231 and the flywheel 220, the friction pairs can transmit required torque, when the rotary drum 210 rotates, the rotary drum 210 drives the speed adjusting ring 231 to rotate through the outer friction pair, and the speed adjusting ring 231 drives the flywheel 220 to rotate through the inner friction pair.
Wherein the preset value may comprise any value from 0.05 to 0.1, such as 0.05, 0.08, 0.1, etc. Further alternatively, the preset value is 0.08, i.e. the speed ring 231 is made of a material with a friction coefficient greater than 0.08.
In this embodiment, when the position of the speed adjusting ring 231 on the flywheel 220 is changed, the speed ratio of the rotary drum 210 to the flywheel 220 is also changed. For example, in the process that the speed adjusting ring 231 moves from the bottom end to the top end of the flywheel 220, the speed ratio between the rotating drum 210 and the flywheel 220 gradually decreases, that is, the rotating speed of the rotating drum 210 gradually decreases, and the rotating speed of the flywheel 220 gradually increases; in the process that the speed adjusting ring 231 moves from the top end to the bottom end of the flywheel 220, the speed ratio of the rotating drum 210 to the flywheel 220 is gradually increased, that is, the rotating speed of the rotating drum 210 is gradually increased, and the rotating speed of the flywheel 220 is gradually decreased.
Referring to fig. 2, in one embodiment, the governor assembly 230 further includes a driving member 232 and a linking member 233, the linking member 233 is connected to each governor ring 231 for keeping a fixed relative position of each governor ring 231, and the driving member 232 can drive each governor ring 231 to move along an inclined direction of the conical surface of the flywheel 220;
when each speed adjusting ring 231 moves from the first end to the second end of the flywheel 220, the speed ratio of the rotary drum 210 to the flywheel 220 gradually decreases, and when each speed adjusting ring 231 moves from the second end to the first end of the flywheel 220, the speed ratio of the rotary drum 210 to the flywheel 220 gradually increases.
When the number of the flywheel 220 and the speed adjusting rings 231 is two or more, in order to ensure that the speed adjusting rings 231 move synchronously along the flywheel 220, the relative positions of the speed adjusting rings 231 can be fixed through the linkage member 233, that is, the speed adjusting rings 231 can move synchronously along the inclined direction of the conical surface of the flywheel 220 under the action of the driving member 232, so as to ensure that the speed ratio of the rotary drum 210 and the flywheel 220 on both sides is consistent.
The first end of the flywheel 220 may be a bottom end of the flywheel 220 (e.g., a left end of the flywheel 220 in fig. 2), the second end of the flywheel 220 may be a top end of the flywheel 220 (e.g., a right end of the flywheel 220 in fig. 2), a top end of the flywheel 220 is disposed near a bottom end of the rotating drum 210, and the bottom end of the rotating drum 210 is connected to the driving motor 100 via the clutch 300.
In one embodiment, there are two flywheels 220, two flywheels 220 are symmetrically disposed on two sides of the rotating drum 210 along the central axis of the rotating drum 210, and a speed adjusting ring 231 is disposed around the periphery of the conical surface of each flywheel 220. The double flywheel 220 structure can eliminate the influence of the gyro moment of the flywheel 220 on the vehicle maneuverability.
In one embodiment, the material of drum 210 includes any one or more of aluminum alloy, magnesium alloy, and carbon fiber. The core of the drum 210 made of the above-mentioned light materials is beneficial to making the drum 210 have smaller rotational inertia, and is beneficial to the speed regulating assembly 230 to quickly regulate the speed of the drum 210, the speed regulating time of the drum 210 is short, the time of the flywheel 220 participating in energy conversion is short, and the response speed of the energy conversion system 200 is fast. In addition, the drum 210 may also be hollow to reduce its moment of inertia.
In one embodiment, the material of flywheel 220 has a density greater than 7.9 tons/cubic meter, and the material of flywheel 220 may include iron, copper, nickel, etc., which have a higher density. The flywheel 220 is made of high-density material, so that the flywheel 220 has a large rotational inertia, and the flywheel 220 is an energy storage element, and the energy storage capacity of the flywheel 220 is in direct proportion to the rotational inertia, so that the flywheel 220 has a high rotational inertia requirement. In addition, the design height of the double flywheel 220 structure can be reduced under the condition of larger rotational inertia, and the whole vehicle arrangement is convenient.
Referring to fig. 2, in one embodiment, the vehicle driving system further includes a solar panel 610, an inverter 620, a battery 630 and a motor controller 500, the motor controller 500 is connected to the driving motor 100, the inverter 620 includes a first input terminal 621, a second input terminal 622, a first output terminal 623 and a second output terminal 624, the first input terminal 621 is connected to the utility power, the second input terminal 622 is connected to the solar panel 610, the first output terminal 623 is connected to the battery 630, the second output terminal 624 is connected to the motor controller 500, and the battery 630 is connected to the motor controller 500.
The battery 630 can supply power to the motor controller 500, the commercial power can supply power to the battery 630 after being converted by the inverter 620 (route: commercial power-first input end 621-first output end 623-battery 630), the energy output by the solar panel 610 can supply power to the battery 630 after being converted by the inverter 620 (route: solar panel 610-second input end 622-first output end 623-battery 630), and the energy output by the solar panel 610 can also directly supply power to the motor controller 500 through the inverter 620 (route: solar panel 610-second input end 622-second output end 624-motor controller 500). Thus, the cost of the driving system is reduced by utilizing renewable energy.
In some embodiments, a vehicle is provided that includes the vehicle drive system described above. For details of the vehicle driving system, reference may be made to the detailed description of the above embodiments, which are not repeated herein.
In the vehicle provided by this embodiment, when the vehicle decelerates, the main controller 400 may control the clutch 300 to close, at this time, the rotating drum 210 rotates under the driving of the driving motor 100 and drives the flywheel 220 to rotate, the main controller 400 simultaneously controls the speed regulating assembly 230 to reduce the speed ratio between the rotating drum 210 and the flywheel 220, that is, the rotating drum 210 decelerates and rotates, and the flywheel 220 accelerates and rotates, that is, energy is stored in the flywheel 220 through the driving motor 100, the clutch 300, and the rotating drum 210, so as to realize energy storage; when the vehicle is accelerated, the main controller 400 can control the clutch 300 to be closed, at this time, the rotating drum 210 rotates under the driving of the driving motor 100 and drives the flywheel 220 to rotate, the main controller 400 simultaneously controls the speed regulating assembly 230 to improve the speed ratio of the rotating drum 210 and the flywheel 220, namely, the flywheel 220 decelerates to rotate, the rotating drum 210 accelerates to rotate, and energy is released to the driving motor 100 through the flywheel 220, the rotating drum 210 and the clutch 300 to realize energy release. Therefore, energy can be stored quickly and efficiently when the vehicle is decelerated and stopped, energy can be released quickly and efficiently when the vehicle is accelerated and started, the battery 630 does not need to be charged or discharged when the vehicle is stopped and started, the burden of the battery 630 is reduced, and meanwhile, the vehicle driving system simplifies the energy conversion process and improves the energy conversion efficiency.
In some embodiments, a vehicle driving method is provided and applied to a vehicle driving system, the vehicle driving system includes a driving motor 100 and an energy conversion system 200, the energy conversion system 200 includes a rotating drum 210, a flywheel 220 and a governor assembly 230, which are assembled together, and the rotating drum 210 is connected with the driving motor 100 via a clutch 300. With regard to the vehicle drive system, reference may be made to the detailed description of the foregoing embodiments, which are not repeated herein.
The present embodiment provides a vehicle driving method including the steps of:
step S100, detecting the running state of the vehicle.
Specifically, whether the current running state of the vehicle is accelerating or decelerating can be determined by collecting the opening degree of the brake pedal and the opening degree of the accelerator pedal.
Step S210, when the deceleration of the vehicle is detected, controlling the clutch 300 to close, so that the rotating drum 210 rotates under the driving of the driving motor 100 and drives the flywheel 220 to rotate, and controlling the governor assembly 230 to reduce the speed ratio of the rotating drum 210 and the flywheel 220 to store energy.
Step S220, when the vehicle acceleration is detected, the clutch 300 is controlled to be closed, so that the rotating drum 210 is driven by the driving motor 100 to rotate and drive the flywheel 220 to rotate, and the speed regulating assembly 230 is controlled to increase the speed ratio of the rotating drum 210 and the flywheel 220 to release energy.
In the vehicle driving method, when the vehicle deceleration is detected, the clutch 300 is controlled to be closed, the rotating drum 210 rotates under the driving of the driving motor 100 and drives the flywheel 220 to rotate, and the speed regulating component 230 is controlled to reduce the speed ratio of the rotating drum 210 and the flywheel 220, namely, the rotating drum 210 rotates in a decelerating manner and the flywheel 220 rotates in an accelerating manner, and at the moment, energy is stored in the flywheel 220 through the driving motor 100, the clutch 300 and the rotating drum 210, so that the energy storage is realized; when the acceleration of the vehicle is detected, the clutch 300 can be controlled to be closed, the rotating drum 210 rotates under the driving of the driving motor 100 and drives the flywheel 220 to rotate, meanwhile, the speed regulating component 230 is controlled to improve the speed ratio of the rotating drum 210 and the flywheel 220, namely, the flywheel 220 decelerates and rotates, the rotating drum 210 accelerates to rotate, and at the moment, energy is released to the driving motor 100 through the flywheel 220, the rotating drum 210 and the clutch 300 to realize energy release. Therefore, energy can be stored quickly and efficiently when the vehicle decelerates and stops, energy can be released quickly and efficiently when the vehicle accelerates and starts, the battery 630 does not need to be charged or discharged when the vehicle stops and starts, the burden of the battery 630 is relieved, and meanwhile, the vehicle driving system simplifies the energy conversion process and improves the energy conversion efficiency.
It should be understood that, although the steps in the flowcharts related to the embodiments are shown in sequence as indicated by the arrows, the steps are not necessarily executed in sequence as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a part of the steps in the flowcharts related to the above embodiments may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of performing the steps or stages is not necessarily sequential, but may be performed alternately or alternately with other steps or at least a part of the steps or stages in other steps.
In an embodiment, a computer-readable storage medium is provided, on which a computer program is stored which, when being executed by a processor, carries out the steps of the above-mentioned method embodiments.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.
All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.
Claims (10)
1. A vehicle drive system, comprising:
the driving motor is connected with the wheels;
the energy conversion system comprises a rotary drum, a flywheel and a speed regulation component which are assembled in a matched mode, the rotary drum can drive the flywheel to rotate, and the speed regulation component can adjust the speed ratio of the rotary drum and the flywheel;
a clutch connecting the driving motor and the drum;
the main controller is connected with the clutch and the speed regulation assembly and is used for: when the vehicle decelerates, the clutch is controlled to be closed, so that the rotary drum rotates under the driving of the driving motor and drives the flywheel to rotate, and meanwhile, the speed regulating assembly is controlled to reduce the speed ratio of the rotary drum and the flywheel so as to store energy; and controlling the clutch to be closed when the vehicle accelerates so as to enable the rotary drum to rotate under the driving of the driving motor and drive the flywheel to rotate, and simultaneously controlling the speed regulating assembly to improve the speed ratio of the rotary drum and the flywheel so as to release energy.
2. The vehicle driving system according to claim 1, wherein the rotating drum and the flywheel are both conical structures, the flywheel is symmetrically arranged on two sides of the rotating drum along a central axis of the rotating drum, and the inclination directions of the conical surfaces of the rotating drum and the adjacent flywheel are kept consistent;
the speed regulation assembly comprises a speed regulation ring, the friction coefficient of the speed regulation ring is higher than a preset value, the speed regulation ring is arranged around the periphery of the conical surface of each flywheel, and the speed regulation ring is in contact with the rotary drum and the flywheel at the gap between the flywheel and the rotary drum.
3. The vehicle drive system according to claim 2, wherein the preset value includes any of 0.05 to 0.1.
4. The vehicle drive system of claim 2, wherein the throttle assembly further comprises a driving member and a linkage member, the linkage member connecting each of the throttle rings for maintaining the relative position of each of the throttle rings fixed, the driving member being capable of driving each of the throttle rings to move along the inclined direction of the conical surface of the flywheel;
when each speed regulating ring moves from the first end to the second end of the flywheel, the speed ratio of the rotary drum to the flywheel is gradually reduced, and when each speed regulating ring moves from the second end to the first end of the flywheel, the speed ratio of the rotary drum to the flywheel is gradually increased.
5. The vehicle driving system according to claim 2, wherein there are two flywheels, two flywheels are symmetrically disposed on two sides of the rotating drum along a central axis of the rotating drum, and one speed adjusting ring is disposed around a conical surface of each flywheel.
6. The vehicle drive system of claim 1, wherein the material of the drum comprises any one or more of an aluminum alloy, a magnesium alloy, and carbon fiber.
7. The vehicle drive system of claim 1, wherein the flywheel comprises a material having a density greater than 7.9 tons/cubic meter.
8. The vehicle driving system according to claim 1, further comprising a solar panel, an inverter, a battery, and a motor controller, wherein the motor controller is connected to the driving motor, the inverter includes a first input terminal, a second input terminal, a first output terminal, and a second output terminal, the first input terminal is connected to a commercial power, the second input terminal is connected to the solar panel, the first output terminal is connected to the battery, the second output terminal is connected to the motor controller, and the battery is connected to the motor controller.
9. A vehicle characterized by comprising the vehicle drive system according to any one of claims 1 to 8.
10. A vehicle driving method is applied to a vehicle driving system and is characterized in that the vehicle driving system comprises a driving motor and an energy conversion system, the energy conversion system comprises a rotary drum, a flywheel and a speed regulation assembly which are assembled in a matched mode, and the rotary drum is connected with the driving motor through a clutch; the method comprises the following steps:
detecting a driving state of a vehicle;
when the deceleration of the vehicle is detected, controlling the clutch to be closed so that the rotary drum rotates under the driving of the driving motor and drives the flywheel to rotate, and simultaneously controlling the speed regulating assembly to reduce the speed ratio of the rotary drum and the flywheel so as to store energy;
when the vehicle is detected to be accelerated, the clutch is controlled to be closed, so that the rotary drum rotates under the driving of the driving motor and drives the flywheel to rotate, and meanwhile, the speed regulating assembly is controlled to improve the speed ratio of the rotary drum and the flywheel so as to release energy.
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| CN202211029598.8A CN115091939A (en) | 2022-08-26 | 2022-08-26 | Vehicle driving system and method and vehicle |
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| CN202211029598.8A CN115091939A (en) | 2022-08-26 | 2022-08-26 | Vehicle driving system and method and vehicle |
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