Hybrid driving method and driving device for multi-layer stereo garage and application

Abstract

The invention belongs to the technical field of stereo garages, and relates to a hybrid driving method for a multilayer stereo garage, a driving device and application, and the method comprises the following steps: 1, arranging a gravitational potential energy recovery device at a lifting vehicle carrying plate of the multilayer stereo garage, recovering gravitational potential energy released in the process that a vehicle descends from a high place, and converting the gravitational potential energy into electric energy for storage; 2, the electric energy converted and stored in the step 1 is adopted to drive a lifting vehicle carrying plate of the multi-layer stereo garage to ascend or descend or transversely move; the driving device comprises a winch, a driving gear, a driven gear, a motor, a generator and a battery pack, gravitational potential energy in the descending process of vehicles in the stereo garage is converted into electric energy to be stored, and the converted and stored electric energy is supplied to the stereo garage for use subsequently; the gravitational potential energy generated in the descending process of vehicles in the stereo garage can be fully recycled, and the energy consumption of the multi-layer stereo garage is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of stereo garages, and relates to a hybrid driving method, a driving device and an application thereof for a multi-story stereo garage. Background Art

[0002] A multi-storey stereo garage is an intelligent parking facility that utilizes vertical space. It realizes multi-storey parking of vehicles through mechanical devices such as lifting and lateral movement. It is mainly used to solve the problem of insufficient parking spaces in cities. Its core feature is to save land area and improve space utilization. Therefore, a multi-storey stereo garage can increase land utilization area and alleviate urban traffic congestion.

[0003] The multi-storey stereo garage realizes the process of parking and moving cars through a variety of mechanical structures and control systems. Multi-storey stereo garages usually include: lifting and transverse moving stereo garages and vertical lifting and transverse moving stereo garages. The parking process of the lifting and transverse moving stereo garage includes: positioning: the system determines the position of the vehicle after the vehicle enters the garage; lifting: the vehicle loading plate is lifted to a suitable height by the lifting mechanism; transverse movement: the vehicle loading plate is then moved to the designated parking space by the transverse movement mechanism. The vehicle moving process of the lifting and transverse moving stereo garage includes: releasing space: the system will lower the vehicle loading plate on the parking space where a certain vehicle is located to one floor; moving other vehicles: adjacent vehicles make way for the passage through the transverse movement mechanism so that the moved vehicle can leave smoothly; restoring the original state: after the vehicle is moved out, the system will reset the other vehicles. The parking process of the vertical lifting and transverse moving stereo garage includes: positioning: the system determines the position of the vehicle after the vehicle enters the garage. lifting: the electric system lifts the vehicle vertically to the designated high-rise parking space. The vehicle moving process of a vertical lifting multi-story parking garage includes: descent: the system lowers the vehicle on a certain parking space to the first floor through a lifting mechanism; movement: after the vehicle is lowered to the first floor, it is moved to the exit through a transverse mechanism; restoration: after the vehicle is moved out, the system will reset the other vehicles.

[0004] Although multi-storey stereo garages are widely used, they consume a lot of energy. The lifting / traverse motor is the main energy-consuming component, and the motor power is usually between 2.2-7.5kW. A single access action consumes about 0.05-0.2 kWh of electricity. Take an ordinary mechanical garage as an example: based on an average of 200 accesses per day, the annual power consumption is about 15,000-30,000 kWh, which is equivalent to an electricity bill of about 12,000-24,000 yuan.

[0005] Therefore, how to reduce the energy consumption of multi-story parking garages is a technical problem that urgently needs to be solved. Summary of the invention

[0006] The technical solution adopted by the present invention to solve the technical problem is: a hybrid driving method for a multi-story parking garage, comprising the following steps: Step 1: A gravitational potential energy recovery device is installed at the lifting vehicle loading plate of the multi-storey stereo garage to recover the gravitational potential energy released during the process of the vehicle descending from a high altitude to the ground when picking up the vehicle and convert it into electrical energy for storage; Step 2: Use the electric energy converted and stored in step 1 to drive the lifting and / or lateral movement of the lifting and loading plate of the multi-story parking garage.

[0007] Preferably, in step 1, the specific steps of converting gravitational potential energy into electrical energy storage include: Step 1-1, a winch is arranged above the lifting vehicle loading plate, and the lifting vehicle loading plate is lifted and lowered by pulling the lower end of the rope of the winch; Step 1-2, a driving gear and a driven gear are arranged at the driving shaft of the winch, the driving gear is driven to rotate by the torque of the motor, and the generator is driven to generate electricity by the torque of the driven gear; Step 1-3, when the lifting platform rises, the motor drives the winch to perform lifting movement through the driving gear. At this time, the driven gear is disconnected from the winch for torque transmission, or the driven gear is disconnected from the generator for torque transmission, so that the driven gear or the generator does not affect the driving gear to drive the winch forward; when the lifting platform descends, the winch drives the generator to generate electricity through the driven gear. At this time, the driving gear is disconnected from the winch for torque transmission, or the driving gear is disconnected from the motor for torque transmission, so that the driving gear does not affect the winch to drive the driven gear in the reverse direction.

[0008] More preferably, in the steps 1-2, the driving gear and the driven gear adopt the method of coaxially rotating large and small sun gears, the driving shaft of the winch adopts a crankshaft, and the crankshaft bending section of the winch adopts a planetary gear drive method; when the winch is used as a driven component, the planetary gear and the driving shaft of the winch rotate synchronously on the same axis, the driving gear drives the planetary gear to rotate, the planetary gear drives the driving shaft of the winch to rotate, and the driving shaft of the winch drives the end of the rope wound on the winch to rise and fall; when the winch is used as the active component, the end of the rope wound on the winch is forced to fall, the driving shaft of the winch drives the planetary gear to rotate, the planetary gear drives the driven gear to rotate, and the driven gear drives the generator to generate electricity, thereby realizing the gravitational potential energy power generation in the process of the vehicle descending from a high place to the ground; The planetary gears mesh with the inner gear ring of the large sun gear and the outer gear ring of the small sun gear at the same time, so that the large and small sun gears can drive the planetary gears to rotate forward separately or simultaneously; so that the planetary gears can reversely drive the small sun gear to rotate when the large sun gear is stationary, or reversely drive the large sun gear to rotate when the small sun gear is stationary; when the winch is used as a driven component, the winch can be driven by the driving method in which the large and small sun gears drive the planetary gears separately or simultaneously; when the large and small sun gears drive the planetary gears at the same time, the rotation directions of the large and small sun gears are opposite; when the large and small sun gears drive the planetary gears separately, one of the large and small sun gears is stationary while the other rotates, the rotating wheel drives the planetary gear, and the stationary wheel is stationary and provides assistance, and the stationary method can be achieved by clamping a brake disc or a clamp; When the winch is used as the active component, the large and small sun gears need to be torque interlocked, that is, the small sun gear stops transmitting torque when the large sun gear transmits torque, or the large sun gear stops transmitting torque when the small sun gear transmits torque, so as to meet the torque and power generation efficiency requirements of the generator; there are many options for torque locking methods, such as brake discs, clutches, etc. The present invention preferably uses the large sun gear as the active gear and the small sun gear as the driven gear, and the transmission ratio of the large sun gear to the planetary gear is greater than 1, and the transmission ratio of the planetary gear to the small sun gear is greater than 1. The diameter of the large sun gear is much larger than the diameter of the small sun gear. Therefore, the tangential meshing force at the meshing teeth of the large sun gear is much smaller than the tangential meshing force at the meshing teeth of the small sun gear. When the planetary gear drives the small sun gear, the mechanical resistance or drag torque of the motor can offset the tangential meshing force at the meshing teeth of the large sun gear, thereby ensuring that the large sun gear is in a stationary state, so that the torque of the planetary gear can be fully transmitted to the small sun gear for gravitational potential energy power generation and recovery.

[0009] The present invention also discloses a hybrid drive device for a multi-story parking garage, comprising: a lifting vehicle loading plate, a drum, a small sun gear, a large sun gear, and a planetary gear, wherein a steel wire rope is wound around the outer circumferential surface of the drum, the upper end of the steel wire rope is fixedly connected to the drum, and the lower end of the steel wire rope is fixedly connected to the lifting vehicle loading plate; The rotating shaft of the reel is connected to the planetary gear through torque transmission, and the planetary gears are respectively engaged with the small sun gear and the large sun gear; The large sun gear torque is connected to the motor or generator; when the large sun gear torque is connected to the motor, the small sun gear torque is connected to the generator; when the large sun gear torque is connected to the generator, the small sun gear torque is connected to the motor; The motor and generator are electrically connected to the battery pack via the central controller respectively; the motor is electrically connected to the external power grid via the central controller; the central controller determines whether to use AC power or battery to power the motor according to the power of the battery pack, and the central controller also determines whether to charge the generator power back to the battery pack according to the power of the battery pack.

[0010] Preferably, the rotating shaft of the reel is a crankshaft, and the planetary gear is coaxially sleeved on the bent section of the crankshaft of the reel; by means of the planetary gear and the crankshaft being fixedly connected as one, the large and small sun gears can directly drive the reel to rotate through the planetary gears, thereby making the forward and reverse torque transmission structure of the large and small planetary gears and the reel simpler and more reliable.

[0011] Preferably, the motor is an asynchronous motor and the generator is a permanent magnet synchronous motor.

[0012] Preferably, the hybrid drive device also includes a transverse driving unit, which is electrically connected to an external power grid and a battery pack via a central controller. The battery pack can supply power to the transverse driving unit, so that the gravitational potential energy released during the vehicle's descent can be converted into electrical energy for use in the vehicle's lateral movement. When the battery pack is low on power, the electrical energy from the external power grid can also be used to power the transverse driving unit.

[0013] More preferably, the transverse drive unit drives the vehicle transversely by using large and small sun gears to drive the planetary gears jointly or separately; the large and small sun gears can be used to drive the vehicle transversely by using a mixture of battery power and AC power separately or jointly, and the mechanical method of the large and small sun gears is the same as the large and small sun gears at the winch. The power supply methods of the large and small sun gears are divided into three modes: battery pack power supply alone, power grid power supply alone, and power grid and battery pack mixed power supply. This power supply method makes full use of the capacity of the battery pack and can prevent the vehicle from being unable to complete the transverse movement due to insufficient power when the battery pack is powered alone.

[0014] Preferably, the hybrid drive device also includes a solar power generation panel, which is electrically connected to a battery pack through a solar power generation controller; the solar power generation panel can replenish the battery pack in a timely and effective manner. When solar power generation is sufficient, the battery pack can supply power to the lifting device and the transverse moving device at the same time. When solar power generation is insufficient, on the premise of ensuring that the battery pack has sufficient spare storage capacity, it is possible to consider using AC power to supply power to the lifting device or the transverse moving device; when the battery pack has sufficient power and the photovoltaic power generation power is high, the central controller can also determine whether it is necessary to transmit the battery pack's electricity to the external power grid through the inverter based on the power of the battery pack, the power generation capacity of the photovoltaic panel and the number of vehicles in the multi-story parking garage.

[0015] The present invention also discloses a multi-story stereoscopic garage, which adopts the hybrid driving device.

[0016] The beneficial effects of the present invention are: 1. The present invention converts the gravitational potential energy during the descent of vehicles in the stereogram garage into electrical energy for storage and subsequent use in the stereogram garage. In specific implementation, this is achieved through the cooperation of a winch, a driving gear, a driven gear, a motor, a generator and a battery pack, so that the driving gear drives the winch forward to provide power for the vehicle to rise and fall, and when the vehicle descends, the winch reversely drives the driven gear to drive the generator to generate electricity; therefore, the present invention can fully recycle the gravitational potential energy during the descent of vehicles in the stereogram garage and reduce the energy consumption of multi-story stereogram garages.

[0017] 2. The two-degree-of-freedom epicyclic gear train of the present invention, i.e., the matching gear train of the large and small sun gears and the planetary gears, can realize in the same gear train a forward drive winch to provide power for vehicle lifting, and a reverse winch to drive the driven gear to drive the generator to generate electricity. Therefore, the torque transmission mechanism of the present invention is simple and convenient, highly reliable, and has the function of alternating direction change of forward and reverse transmission.

[0018] 3. The present invention adopts a permanent magnet synchronous motor as a generator for recovering gravitational potential energy, so that the gravitational potential energy of the vehicle can be directly converted into DC electric energy through the permanent magnet synchronous motor and stored in a battery pack, thereby realizing effective recovery of the gravitational potential energy of the vehicle.

[0019] 4. The present invention sets up solar panels so that during the day when there is sufficient sunlight, the solar panels can continuously convert solar energy into electrical energy, which is directly stored in the battery pack and can provide electrical energy for the motors of the vehicle's vertical lifting and horizontal movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a hybrid driving principle diagram of a hybrid driving method, a driving device and an applied lifting mechanism for a multi-story parking garage of the present invention; Figure 2 It is a diagram of the horizontal movement mechanism of the three-dimensional car park of the present invention; Figure 3 It is a schematic diagram of the hybrid drive principle of the transverse mechanism of the present invention.

[0021] In the figure, 1. a multi-layer lifting and transversely shifting stereo garage; 2. a lifting vehicle loading plate; 3. parking vehicles; 4. a steel wire rope; 5. a first gear; 6. a small sun gear; 7. a reel; 8. a planetary gear; 9. a solar panel; 10. a large sun gear; 11. a tie rod; 12. a second gear; 13. a roller; 14. a transversely shifting vehicle loading plate; 15. a track limiter; 16. a small sun gear of a transversely shifting mechanism; 17. a large sun gear of a transversely shifting mechanism; 18. planetary gears of a transversely shifting mechanism; 19. a tie rod of a transversely shifting mechanism; 20. a third gear; 21. a fourth gear; 22. a motor; 23. a generator; 24. a central controller; 25. a battery pack; 26. an external power grid; 27. a transversely shifting drive unit; 28. a solar power generation controller. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the relevant technologies in the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] refer to Figures 1 to 3 In this embodiment, in the hybrid drive device used in the multi-story stereo garage, the horizontal movement of the vehicle only requires the motor to overcome the vehicle inertia and the friction of the transmission system. The required motor power is much smaller than the motor power for vertical lifting. This embodiment improves the vertical lifting mechanism and horizontal lateral movement mechanism of the multi-story stereo garage.

[0024] 1. Composition of lifting mechanism Since the two-degree-of-freedom epicyclic gear train can realize single-input single-output and double-input and single-output functions by braking different gears, the present invention introduces the two-degree-of-freedom epicyclic gear train into the vertical lifting device of the vehicle-carrying plate on the basis of the original single asynchronous motor driving the drum wire rope to drive the vehicle-carrying plate to move up and down. The two-degree-of-freedom epicyclic gear train A for lifting is composed of a small sun gear 6, a planetary gear 8, a large sun gear 10, a first gear 5 and a tie rod 11. The two-degree-of-freedom epicyclic gear train B for lateral movement is composed of a small sun gear 16 of a lateral movement mechanism, a planetary gear 18 of a lateral movement mechanism, a large sun gear 17 of a lateral movement mechanism, a third gear 20, a fourth gear 21 and a tie rod 19 of a lateral movement mechanism.

[0025] The lifting mechanism of the present invention is composed of a motor 22, a generator 23, a two-degree-of-freedom epicyclic gear train A, a drum 7, a steel wire rope 4 and a lifting vehicle loading plate 2. The motor 22 is an asynchronous motor, and the generator 23 is a permanent magnet synchronous motor; the asynchronous motor is always connected to the external power grid 26, the asynchronous motor is connected to the second gear 12, the second gear 12 is meshed with the first gear 5, the first gear 5 is fixedly connected to the large sun gear 10, the planetary gear 8 is meshed with the large sun gear 10, the planetary gear 8 can rotate freely around the tie rod 11, the tie rod 11 is connected to the drum 7, one end of the steel wire rope 4 is wound on the drum 7, and the other end is connected to the lifting vehicle loading plate 2. The permanent magnet synchronous motor is connected to the small sun gear 6.

[0026] The main components of the lifting mechanism of the present invention include an asynchronous motor, a permanent magnet synchronous motor, a solar power generation panel 9, a battery pack 25, a solar power generation controller 28, a central controller 24, a two-degree-of-freedom epicyclic gear train A, a drum 7, a wire rope 4 and a lifting vehicle loading plate 2.

[0027] 2. Composition of the lateral movement mechanism The transverse movement mechanism of the present invention is composed of a transverse movement carrier plate 14, a roller 13, a track limiter 15, a DC motor, an asynchronous motor and a two-degree-of-freedom epicyclic gear system B for transverse movement (including a small sun gear 16 of the transverse movement mechanism, a planetary gear 18 of the transverse movement mechanism, a large sun gear 17 of the transverse movement mechanism, a fourth gear 21 and a transverse movement mechanism tie rod 19).

[0028] The roller 13 is connected to the transverse driving component, and the roller 13 rolls in the track limiter 15. The transverse driving component is composed of a small sun gear 16 of the transverse mechanism, a planetary gear 18 of the transverse mechanism, a large sun gear 17 of the transverse mechanism, a fourth gear 21, a tie rod 19 of the transverse mechanism, an asynchronous motor and a DC motor. The tie rod 19 of the transverse mechanism is connected to the roller 13.

[0029] Compared with the traditional multi-storey stereo garage, this implementation has the following advantages: (1) When there is sufficient sunlight during the day, the solar panels can continuously convert solar energy into electrical energy, which is directly stored in the battery pack and can provide power for the motors for vertical lifting and horizontal movement of the vehicle; (2) The two-degree-of-freedom epicyclic gear train A can directly convert the vehicle's gravitational potential energy into DC power through a permanent magnet synchronous motor and store it in a battery pack, thus achieving effective recovery of the vehicle's gravitational potential energy; (3) The lifting two-degree-of-freedom epicyclic gear system A can realize three working modes by braking different gears: asynchronous motor single drive, permanent magnet synchronous motor drive, and asynchronous motor and permanent magnet synchronous motor hybrid drive. It can meet the following working conditions, such as (a) strong sunlight in summer, (b) weak sunlight in winter, and (c) solar panels cannot work effectively at night and on rainy days, thereby ensuring that the multi-story stereo garage can work 24 hours a day. (4) The two-degree-of-freedom lateral revolving gear train B can realize three working modes by braking different gears: single drive of asynchronous motor B, DC motor drive, and mixed drive of asynchronous motor and DC motor. It can also ensure that the multi-story parking garage can work 24 hours a day.

[0030] 3. Solar energy and vehicle gravitational potential energy recovery and storage The solar power generation device is located on the top of the multi-story lifting and transverse sliding stereoscopic parking garage, directly exposed to the direct sunlight. Under the action of the solar power generation controller, solar energy is continuously converted into electrical energy and directly stored in the battery pack.

[0031] When the parked vehicle located above the second floor descends to the ground, the asynchronous motor brake is turned on, the asynchronous motor is in a braking state, and the second gear 12 and the first gear 5 are also in a braking state. Then the brake of the permanent magnet synchronous motor is turned off, and the permanent magnet synchronous motor is in a state where it can rotate. Under the action of gravity, the parked vehicle 3 drives the reel 7 to rotate, and the reel 7 drives the tie rod 11 and the planetary gear 8 to rotate. Since the planetary gear 8 and the small sun gear 6 are meshed, the small sun gear 6 and the permanent magnet synchronous motor rotate. At this time, the permanent magnet synchronous motor is in a generator working state, directly converting the gravitational potential energy of the parked vehicle into electrical energy, which is stored in the battery pack 25 under the action of the central controller.

[0032] Assume that the speed of the small sun gear 6 in the lifting mechanism is , the speed of planetary gear 8 is , the speed of the large sun gear 10 is , the speed of tie rod 11 is , the speed of the first gear 5 is , the speed of the second gear 12 is , the number of teeth of the small sun gear 6 is , the number of teeth of planetary gear 8 is , the number of teeth of the large sun gear 10 is , the number of teeth of the first gear 5 is , the number of teeth of the second gear 12 is , at this time, the transmission ratio calculation formula according to the epicyclic gear train is: (1) When the gravity potential energy recovery mode of the parked vehicle is turned on in the lifting mechanism, the large sun gear 10 is in a braking state and its speed ,but: (2) Since the reel 7 is fixedly connected to the tie rod 11, , the permanent magnet synchronous motor is fixedly connected to the small sun gear 6, that is, , by transforming equation (2), we can get the permanent magnet synchronous motor speed With reel 7 speed The relationship between them is: (3) Number of teeth Greater than number of teeth , it can be seen from formula (3) that when the parking vehicle gravity potential energy recovery mode is turned on, the speed of the permanent magnet synchronous motor is the drum speed is the reel speed It is several times of that of permanent magnet synchronous motor.

[0033] 4. Secondary utilization of recovered electric energy When the amount of electricity in the battery pack 25 reaches the usage requirement, under the action of the central controller 24, the DC power in the battery pack 25 can be directly used for two purposes: Application i——Directly power the lifting mechanism of parked vehicles The asynchronous motor brake in the lifting structure is turned on, and the lifting asynchronous motor is in a braking state. Under the action of the central controller 24, the battery pack 25 supplies power to the permanent magnet synchronous motor, and the permanent magnet synchronous motor works in the motor mode to directly lift the parked vehicle from the ground to the parking floor with vacant space. The speed of the reel 7 Permanent magnet synchronous motor speed The relationship between them is: (4) Purpose ii: To provide power for the horizontal movement mechanism of parked vehicles The asynchronous motor brake in the transverse mechanism is turned on, and the asynchronous motor is in a braking state. Under the action of the central controller, the battery pack 25 supplies power to the DC motor, and the speed of the roller 13 is With DC motor speed The relationship between them is: (5) in, and are the number of teeth of the small sun gear of the transverse mechanism and the large sun gear of the transverse mechanism respectively.

[0034] 5. Hybrid drive of lifting mechanism When the battery pack 25 is low on power, the output torque of the permanent magnet synchronous motor in the lifting mechanism decreases, and the lifting speed cannot reach the predetermined requirement, the asynchronous motor in the lifting mechanism starts to start, and the asynchronous motor and the permanent magnet synchronous motor work at the same time, realizing the input of two power sources, and the tie rod 11 outputs driving power, thereby driving the drum 7 to work and realize the lifting requirement of the parked vehicle. Asynchronous motor A speed and permanent magnet synchronous motor speed The relationship between them is: (6) 6. Hybrid drive of transverse mechanism Similarly, when the battery pack 25 is low on power, the output torque and output speed of the DC motor in the transverse mechanism are reduced, and the working speed of the transverse mechanism cannot meet the predetermined requirements. At this time, the asynchronous motor in the transverse mechanism starts to start, and the asynchronous motor and the DC motor work at the same time to realize the input of two power sources. The transverse mechanism tie rod 19 outputs driving power, thereby driving the roller 13 to rotate, thereby realizing the transverse movement requirements of the parked vehicle.

[0035] Roller 13 speed With asynchronous motor B speed and DC motor speed The relationship between them is: (7) 7. The lifting mechanism and the traverse mechanism work independently When the battery pack 25 is low in power to a certain level, the permanent magnet synchronous motor cannot provide driving power for the lifting mechanism. At this time, the asynchronous motor in the lifting mechanism is powered by the external power grid and the permanent magnet synchronous motor is braked. The lifting mechanism enters the traditional single asynchronous motor drive mode, and the drum speed is 7 With asynchronous motor speed The speed relationship between them is: (8) Similarly, when the battery pack 25 is low to a certain level, the DC motor cannot provide driving power for the transverse mechanism. At this time, the asynchronous motor in the transverse mechanism is powered by an external power grid and the DC motor is braked. The transverse mechanism enters the traditional single asynchronous motor drive mode, and the speed of the roller 13 in the transverse mechanism is With asynchronous motor speed The speed relationship between them is: (9) Since a solar panel 9 is also provided in the present embodiment and is electrically connected to the battery pack 25, the present embodiment not only ensures the 24-hour safe operation of the multi-layer lifting and transverse moving stereogram parking garage, but also realizes the effective energy saving of the stereogram parking garage from the two aspects of solar energy replenishment and gravitational potential energy recovery of parked vehicles.

[0036] The hybrid drive device for multi-layer lifting and transverse shifting stereo garage of this embodiment uses a two-degree-of-freedom epicyclic wheel system in the lifting mechanism. On the one hand, it can recover the gravitational potential energy of the parked vehicle during the descent process, and convert the gravitational potential energy into electrical energy and store it in the battery pack with the help of a permanent magnet synchronous motor. On the other hand, it can also realize the lifting function of the parked car by hybrid driving the power of the asynchronous motor and the power of the permanent magnet synchronous motor, avoiding the waste of gravitational potential energy during the descent of the parked vehicle and realizing the effective recovery and secondary utilization of gravitational potential energy. A two-degree-of-freedom epicyclic wheel system is also introduced in the transverse shifting mechanism. On the one hand, it can use the electrical energy from the battery pack, and on the other hand, it can also realize the hybrid drive of the asynchronous motor and the DC motor, effectively ensuring the safe operation of the stereo vehicle. In order to make full use of solar energy, this embodiment lays a solar power generation panel on the top of the stereo garage, converts solar energy into electrical energy and stores it in the battery pack, adding extra energy to the stereo garage. The comprehensive utilization of the solar power generation device and the recycling of gravitational potential energy can effectively reduce the energy consumption of the multi-layer lifting and transverse shifting stereo garage.

[0037] Example

[0038] A certain type of multi-storey stereo garage is rectangular, with five floors from 1 to 5 in the vertical direction, and 10 car loading plates on each floor in the horizontal direction. Each floor has an empty parking space for parking vehicles in and out of the garage. Vehicle entry is when the motor drives the drum to drive the wire rope to lift the vehicle on the car loading plate on the 1st floor to the 2nd-5th floor. The motor power is 2.2KW. The horizontal movement of the car loading plate is also achieved by the motor driving the drum to drive the wire rope. The motor power is smaller than the vertical lifting motor, and the power is about 0.2KW. The street multi-storey stereo garage can be used to park ordinary family cars and SUV vehicles. The weight of family cars is estimated at 1500Kg, and the weight of SUV vehicles is estimated at 2000Kg. In order to take into account the parking of SUV vehicles, the height of each floor of the multi-storey stereo garage is 2.5 meters. The driving power used for vehicle lifting and translation is an asynchronous motor, and PLC is used to coordinate the work of multiple motors. The multi-storey stereo garage is powered by the city power grid. Before the hybrid drive device for a multi-story stereoscopic car park of the present invention is used, a motor is completely required to lift a parked vehicle from the first floor to a high-level parking space in order to overcome the gravity of the vehicle. The motor is also required to slowly transport the high-altitude vehicle to the first floor when the vehicle is lowered. Not only is the gravitational potential energy completely wasted during the lowering of the vehicle, but the electrical energy consumed by the motor is also consumed at the same time.

[0039] After using the hybrid drive device for a multi-story stereo garage of the present invention, when the vehicle is parked, it rises to the parking space to generate gravitational potential energy. This gravitational potential energy is stored in the battery through the generator during the process of descending to the ground when the vehicle is picked up. The electric energy of the battery can be provided to the lifting mechanism and the transverse movement mechanism as a power source. In conjunction with the photovoltaic power generation of the solar panels on the top of the garage, it is stored in the battery. Since almost no electric energy is consumed when the vehicle is picked up, the electric energy converted into gravitational potential energy when the vehicle is parked is repeatedly recycled by the present invention, and the energy consumption of the transverse movement mechanism is much lower than that of the lifting mechanism. Therefore, the use of the hybrid drive device for a multi-story stereo garage of the present invention can save more than 50% of energy. Estimated based on the power consumption of 0.1 degrees for the existing ordinary mechanical garage access action, the present invention saves 0.05 degrees of electric energy on average for each time the vehicle is parked and taken out.

[0040] If this type of multi-story parking garage is used in downtown areas or busy commercial areas, each parking space is calculated as being used once every three hours per day, with an average of 320 parking retrievals per day, saving 11,680 kWh of electricity per year (0.05 kWh × 320 times × 2 times × 365 days), equivalent to an electricity bill of approximately RMB 9,344.

[0041] Moreover, for large-scale commercial multi-story parking garages, there are more parking spaces and more vehicles entering and leaving the garage every day. If the large amount of gravitational potential energy of these vehicles descending from the upper floors to the first floor can be fully recycled, more energy consumption can be effectively saved.

[0042] In addition, the top of the multi-story garage is exposed to sunlight, especially in the hot summer, with high light intensity and great photovoltaic power generation potential. Generally, the power generation power of solar panels per square meter per hour is 100-150W. The top area of ​​the multi-story garage is about 100 square meters, and its power generation capacity cannot be underestimated. This embodiment makes reasonable use of it and also recycles the gravitational potential energy of the vehicle, so that the energy consumption of the multi-story garage can be greatly reduced.

[0043] To summarize, the present invention realizes the conversion of the gravitational potential energy during the descent of the vehicle in the multi-story garage into electrical energy for storage and subsequent use in the multi-story garage through the cooperation of a winch, a driving gear, a driven gear, a motor, a generator and a battery pack. Therefore, the present invention can fully utilize and recover the gravitational potential energy during the descent of the vehicle in the multi-story garage and reduce the energy consumption of the multi-story garage.

[0044] It should be emphasized that the above are only preferred embodiments of the present invention and do not limit the present invention in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A hybrid driving method for a multi-story parking garage, characterized in that: The following steps are involved: Step 1: A gravitational potential energy recovery device is installed at the lifting vehicle loading plate of the multi-storey stereo garage to recover the gravitational potential energy released during the descent of the vehicle from a high altitude and convert it into electrical energy for storage; Step 2: Use the electric energy converted and stored in step 1 to drive the lifting and / or lateral movement of the lifting and loading plate of the multi-story parking garage.

2. A hybrid driving method for a multi-story parking garage according to claim 1, characterized in that: In step 1, the specific steps of converting gravitational potential energy into electrical energy storage include: Step 1-1, a winch is arranged above the lifting vehicle loading plate, and the lifting vehicle loading plate is lifted or lowered by pulling the rope of the winch; Step 1-2, a driving gear and a driven gear are arranged at the driving shaft of the winch, the driving gear is driven to rotate by the torque of the motor, and the generator is driven to generate electricity by the torque of the driven gear; Step 1-3: when the lifting platform is raised, the motor drives the winch to perform lifting motion through the driving gear; when the lifting platform is lowered, the winch drives the generator to generate electricity through the driven gear.

3. A hybrid driving method for a multi-story parking garage according to claim 2, characterized in that: In the step 1-2, the driving gear and the driven gear adopt the method of coaxially rotating large and small sun gears, the driving shaft of the winch adopts a crankshaft, and the crankshaft bending section of the winch adopts a planetary gear drive method; The planetary gears simultaneously mesh with the inner gear ring of the large sun gear and the outer gear ring of the small sun gear, so that the large and small sun gears can drive the planetary gears to rotate forward separately or simultaneously; so that the planetary gears can reversely drive the small sun gear to rotate when the large sun gear is stationary or reversely drive the large sun gear to rotate when the small sun gear is stationary.

4. A hybrid drive device for a multi-story parking garage, characterized in that: include: A lifting vehicle loading plate (2), a drum (7), a small sun gear (6), a large sun gear (10), and a planetary gear (8), wherein a steel wire rope (4) is wound around the outer circumferential surface of the drum (7), the upper end of the steel wire rope (4) is fixedly connected to the drum (7), and the lower end of the steel wire rope (4) is fixedly connected to the lifting vehicle loading plate (2); The rotating shaft of the reel (7) is connected to the planetary gear (8) through torque transmission, and the planetary gear (8) is respectively meshed with the small sun gear (6) and the large sun gear (10); The large sun gear (10) is torque-connected to the motor (22) or the generator (23); when the large sun gear (10) is torque-connected to the motor (22), the small sun gear (6) is torque-connected to the generator (23); when the large sun gear (10) is torque-connected to the generator (23), the small sun gear (6) is torque-connected to the motor (22); The motor (22) and the generator (23) are electrically connected to a battery pack (25) via a central controller (24), respectively; the motor (22) is electrically connected to an external power grid (26) via the central controller (24).

5. A hybrid drive device for a multi-storey parking garage according to claim 4, characterized in that: The rotating shaft of the reel (7) is a crankshaft, and the planetary gear (8) is coaxially sleeved on the bent section of the crankshaft of the reel (7).

6. A hybrid drive device for a multi-story parking garage according to claim 4, characterized in that: The motor (22) is an asynchronous motor, and the generator (23) is a permanent magnet synchronous motor.

7. A hybrid drive device for a multi-story parking garage according to claim 4, characterized in that: The hybrid drive device further comprises a transverse drive unit (27), and the transverse drive unit (27) is electrically connected to an external power grid (26) and a battery pack (25) via the central controller (24).

8. The hybrid drive device for a multi-story parking garage according to claim 7, characterized in that: The transverse movement driving unit (27) drives the vehicle to move transversely by means of the large and small sun gears driving the planetary gears jointly or separately.

9. The hybrid drive device for a multi-story parking garage according to claim 4, characterized in that: The hybrid drive device further comprises a solar power generation panel (9), wherein the solar power generation panel (9) is electrically connected to the storage battery pack (25) via a solar power generation controller (28).

10. A multi-storey stereo garage, characterized in that: The multi-story stereoscopic car park adopts the hybrid drive device described in any one of claims 4 to 9.

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