A hybrid drive method, drive device and application for a multi-layer stereo garage

Abstract

The present invention belongs to the technical field of three-dimensional garages, and relates to a hybrid drive method, a drive device and an application for a multi-layer three-dimensional garage. The method includes: 1. A gravitational potential energy recovery device is arranged at the lifting and car-carrying plate of the multi-layer three-dimensional garage to recover the gravitational potential energy released during the descent of the vehicle from a high place and convert it into electrical energy for storage; 2. The electrical energy converted and stored in step 1 is used to drive the lifting and horizontal movement of the lifting and car-carrying plate of the multi-layer three-dimensional garage. The drive device includes: a hoist, a driving gear, a driven gear, a motor, a generator and a battery pack. The present invention converts the gravitational potential energy during the descent of the vehicle in the three-dimensional garage into electrical energy for storage, and the converted and stored electrical energy is used for the three-dimensional garage subsequently. The present invention can fully recover and utilize the gravitational potential energy during the descent of the vehicle in the three-dimensional garage, and reduce the energy consumption of the multi-layer three-dimensional garage.

Description

Technical Field

[0001] The present invention belongs to the technical field of three-dimensional garages, and relates to a hybrid drive method, a drive device and an application for a multi-layer three-dimensional garage. Background Art

[0002] A multi-layer three-dimensional garage is an intelligent parking facility that utilizes vertical space. It realizes multi-layer parking of vehicles through mechanical devices such as lifting and traversing, and is mainly used to solve the problem of insufficient urban parking spaces. Its core feature is to save land area and improve space utilization rate. Therefore, a multi-layer three-dimensional garage can increase the land use area and relieve urban traffic congestion.

[0003] A multi-layer three-dimensional garage realizes the process of parking and moving vehicles through various mechanical structures and control systems. A multi-layer three-dimensional garage usually includes: a lifting and traversing three-dimensional garage and a vertical lifting three-dimensional garage. The parking process of a lifting and traversing three-dimensional garage includes: positioning: after the vehicle enters the garage, the system determines the position of the vehicle; lifting: the car carrier plate lifts the vehicle to an appropriate height through a lifting mechanism; traversing: the car carrier plate then moves the vehicle to the designated parking space through a traversing mechanism. The vehicle moving process of a lifting and traversing three-dimensional garage includes: releasing space: the system lowers the car carrier plate where a certain vehicle is located to the first floor; moving other vehicles: adjacent vehicles make way through the traversing mechanism so that the vehicle to be moved can leave smoothly; restoring the original state: after the vehicle is moved out, the system restores other vehicles to their original positions. The parking process of a vertical lifting three-dimensional garage includes: positioning: after the vehicle enters the garage, the system determines the position of the vehicle. Lifting: the electric system vertically lifts the vehicle to the designated high-rise parking space. The vehicle moving process of a vertical lifting three-dimensional garage includes: descending: the system lowers the vehicle on a certain parking space to the first floor through a lifting mechanism; moving: after the vehicle is lowered to the first floor, it moves to the exit through a traversing mechanism; restoring the original state: after the vehicle is moved out, the system restores other vehicles to their original positions.

[0004] Although multi-layer three-dimensional garages are widely used, however, the energy consumption of multi-layer three-dimensional garages is relatively high. The lifting / traversing motor is the main energy-consuming component, and the motor power is usually between 2.2 - 7.5 kW, and the power consumption for a single access operation is about 0.05 - 0.2 degrees. Taking a common mechanical garage as an example: calculated according to 200 accesses per day on average, the annual power consumption is about 15,000 - 30,000 degrees, which is about 12,000 - 24,000 yuan in electricity charges.

[0005] Therefore, how to reduce the energy consumption of multi-layer three-dimensional garages is an urgent technical problem to be solved. Summary of the Invention

[0006] The technical solution adopted by the present invention to solve the technical problem is: a hybrid drive method for a multi-layer three-dimensional garage, including the following steps:

[0007] Step 1: Set up a gravitational potential energy recovery device at the lifting and carrying platform of the multi-layer stereo garage to recover the gravitational potential energy released during the process of the vehicle descending from a high place to the ground when retrieving a vehicle, and convert it into electrical energy for storage;

[0008] Step 2: Use the electrical energy converted and stored in Step 1 to drive the lifting and or lateral movement of the lifting and carrying platform of the multi-layer stereo garage.

[0009] Preferably, in Step 1, the specific steps of converting gravitational potential energy into electrical energy for storage include:

[0010] Step 1-1: Set up a winch above the lifting and carrying platform, and use the lower end of the rope of the winch to tow the lifting and carrying platform up and down;

[0011] Step 1-2: Set up a driving gear and a driven gear at the driving shaft of the winch, drive the driving gear to rotate through the torque of the motor, and drive the generator to generate electricity through the torque of the driven gear;

[0012] Step 1-3: When the lifting and carrying platform rises, make the motor drive the winch to perform a lifting motion through the driving gear. At this time, disconnect the torque transmission between the driven gear and the winch or disconnect the torque transmission between the driven gear and the generator, so that the driven gear or the generator does not affect the forward drive of the driving gear to the winch; when the lifting and carrying platform descends, make the winch drive the generator to generate electricity through the driven gear. At this time, disconnect the torque transmission between the driving gear and the winch or disconnect the torque transmission between the driving gear and the motor, so that the driving gear does not affect the reverse drive of the winch to the driven gear.

[0013] More preferably, in Step 1-2, the driving gear and the driven gear adopt the method of large and small sun gears rotating coaxially. The driving shaft of the winch adopts a crankshaft, and the bent section of the crankshaft of the winch adopts a planetary gear drive method; when the winch is a driven component, the planetary gear rotates coaxially and synchronously with the driving shaft of the winch. 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 an active component, the end of the rope wound on the winch is stressed and descends. 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, so as to realize the generation of gravitational potential energy during the process of the vehicle descending from a high place to the ground;

[0014] The planetary gear simultaneously meshes with the inner ring gear of the large sun gear and the outer ring gear of the small sun gear, enabling the large and small sun gears to drive the planetary gear to rotate forward separately or simultaneously; enabling the planetary gear to drive the small sun gear to rotate in reverse when the large sun gear is stationary or drive the large sun gear to rotate in reverse when the small sun gear is stationary; when the winch is a driven component, the winch can be driven by the driving mode of the large and small sun gears driving the planetary gear separately or simultaneously; when the large and small sun gears drive the planetary gear simultaneously, the rotation directions of the large and small sun gears are opposite; when the large and small sun gears drive the planetary gear separately, one of the large and small sun gears is stationary and the other rotates, and the rotating gear drives the planetary gear while the stationary gear remains stationary and provides assistance, and the stationary mode can be achieved by using a brake disc or a clamping hoop to clamp tightly;

[0015] When the winch is an active component, torque interlock is required between the large and small sun gears, that is, when the large sun gear transmits torque, the small sun gear stops transmitting torque, or when the small sun gear transmits torque, the large sun gear stops transmitting torque, to meet the torque and power generation efficiency requirements of the generator; there are various options for torque locking methods, such as brake discs, clutches, etc. In the present invention, it is preferred that the large sun gear is the driving wheel and the small sun gear is the driven wheel, and the transmission ratio of the large sun gear to the planetary gear is greater than 1, the transmission ratio of the planetary gear to the small sun gear is greater than 1, and the diameter of the large sun gear is much larger than that 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 remains stationary, enabling all the torque of the planetary gear to be transmitted to the small sun gear for gravitational potential energy power generation and recovery.

[0016] The present invention also discloses a hybrid drive device for a multi-layer stereo garage, including: a lifting car carrier plate, a drum, a small sun gear, a large sun gear, and a planetary gear. 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 car carrier plate;

[0017] The torque of the rotating shaft of the drum is transmitted to the planetary gear in a driving manner, and the planetary gear meshes with the small sun gear and the large sun gear respectively;

[0018] The large sun gear is torque-connected to an electric motor or a generator; when the large sun gear is torque-connected to the electric motor, the small sun gear is torque-connected to the generator; when the large sun gear is torque-connected to the generator, the small sun gear is torque-connected to the electric motor;

[0019] The electric motor and the generator are respectively electrically connected to the battery pack via a central controller; the electric motor is electrically connected to the external power grid via the central controller; the central controller determines whether to supply power to the electric motor using commercial power or the battery according to the power of the battery pack, and the central controller also determines whether to recharge the power generated by the generator to the battery pack according to the power of the battery pack.

[0020] Preferably, the rotating shaft of the drum is a crankshaft, and the planet gears are coaxially sleeved on the bent section of the crankshaft of the drum; through the integral fixed connection of the planet gears and the crankshaft, the large and small sun gears can directly drive the drum to rotate through the planet gears, so that the forward and reverse torque transmission structure between the large and small planet gears and the drum is simpler and more reliable.

[0021] Preferably, the motor is an asynchronous motor and the generator is a permanent magnet synchronous motor.

[0022] Preferably, the hybrid drive device further includes a transverse movement drive part, and the transverse movement drive part is respectively electrically connected to the external power grid and the battery pack via the central controller; the battery pack can supply power to the transverse movement drive part, so that the electric energy converted from the gravitational potential energy released during the vehicle descent can be used for the vehicle transverse movement. When the battery pack has insufficient power, the electric energy of the external power grid can also be used to supply the transverse movement drive part to work.

[0023] More preferably, the transverse movement drive part drives the vehicle to move transversely by the large and small sun gears jointly or separately driving the planet gears; the driving method of the large and small sun gears can be used to mix the battery electric energy and the mains power supply to drive the vehicle to move transversely separately or jointly. The mechanical driving method of the large and small sun gears is the same as that of the large and small sun gears at the hoist. The power supply methods of the large and small sun gears driving are divided into three modes: the battery pack supplies power alone, the power grid supplies power alone, and the power grid and the battery pack supply power in combination. This power supply method makes full use of the capacitance of the battery pack and can prevent the situation that the vehicle cannot complete the transverse movement due to insufficient power when the battery pack supplies power alone.

[0024] Preferably, the hybrid drive device further includes a solar power generation panel, and the solar power generation panel is electrically connected to the battery pack through a solar power generation controller; the solar power generation panel can make timely and effective power supplement to the battery pack. When the solar power generation is sufficient, the battery pack can supply power to the lifting device and the transverse movement device at the same time. When the solar power generation is insufficient, on the premise of ensuring that the battery pack has enough spare battery capacity, the mains power can be considered to supply power to the lifting device or the transverse movement 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 electric energy of the battery pack to the external power grid through an inverter according to the power of the battery pack, the power generation capacity of the photovoltaic power generation panel and the number of vehicles in the multi-storey parking garage.

[0025] The present invention also discloses a multi-storey stereoscopic parking garage, and the multi-storey stereoscopic parking garage adopts the above-mentioned hybrid drive device.

[0026] The beneficial effects of the present invention are:

[0027] 1. The present invention converts the gravitational potential energy during the vehicle descent process of the stereoscopic garage into electrical energy for storage and subsequent use by the stereoscopic garage. Specifically, during implementation, it is achieved through the cooperation of a hoist, a driving gear, a driven gear, a motor, a generator, and a battery pack. Thus, the driving gear drives the hoist forward to provide power for vehicle lifting and lowering. When the vehicle descends, the hoist drives the driven gear in reverse to drive the generator to generate electricity. Therefore, the present invention can fully recover and utilize the gravitational potential energy during the vehicle descent process of the stereoscopic garage, reducing the energy consumption of multi - layer stereoscopic garages.

[0028] 2. The two - degree - of - freedom epicyclic gear train of the present invention, that is, the combined gear train of the large and small sun gears and the planet gears, can achieve the driving gear driving the hoist forward to provide power for vehicle lifting and lowering in the same gear train, and the reverse hoist drives the driven gear to drive the generator to generate electricity. Therefore, the torque transmission mechanism of the present invention is simple, convenient, and highly reliable, and has the function of alternating forward and reverse transmission direction changes.

[0029] 3. By adopting a permanent - magnet synchronous motor as the generator for recovering gravitational potential energy, the present invention can directly convert the gravitational potential energy of the vehicle into direct - current electrical energy through the permanent - magnet synchronous motor and store it in the battery pack, realizing the effective recovery of the vehicle's gravitational potential energy.

[0030] 4. By setting solar panels, during the period of sufficient daylight, the solar panels of the present invention can continuously convert solar energy into electrical energy and directly store it in the battery pack, providing electrical energy for the motors of vehicle vertical lifting and horizontal movement. Description of the Drawings

[0031] Figure 1 is the schematic diagram of the hybrid drive of the lifting mechanism of a hybrid drive method, drive device, and application for a multi - layer stereoscopic garage of the present invention;

[0032] Figure 2 is the diagram of the horizontal translation mechanism of the stereoscopic garage of the present invention;

[0033] Figure 3 is the schematic diagram of the hybrid drive of the horizontal translation mechanism of the present invention.

[0034] In the figure, 1. Multi - layer lifting and horizontal translation stereoscopic garage; 2. Lifting car carrier plate; 3. Parked vehicle; 4. Steel wire rope; 5. First gear; 6. Small sun gear; 7. Drum; 8. Planet gear; 9. Solar panel; 10. Large sun gear; 11. Link; 12. Second gear; 13. Roller; 14. Horizontal translation car carrier plate; 15. Track limiter; 16. Small sun gear of the horizontal translation mechanism; 17. Large sun gear of the horizontal translation mechanism; 18. Planet gear of the horizontal translation mechanism; 19. Link of the horizontal translation mechanism; 20. Third gear; 21. Fourth gear; 22. Motor; 23. Generator; 24. Central controller; 25. Battery pack; 26. External power grid; 27. Horizontal translation drive part; 28. Solar power generation controller. Detailed implementation mode

[0035] The following will clearly and completely describe the related technologies in the present invention in combination with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0036] Reference Figures 1 to 3 , in this implementation mode, for the hybrid drive device of a multi-layer stereo garage, the horizontal movement of the vehicle only requires the motor to overcome the inertia of the vehicle and the friction of the transmission system, and the required motor power is much smaller than that of the motor for vertical lifting. This implementation mode improves the vertical lifting mechanism and the horizontal traversing mechanism of the multi-layer stereo garage.

[0037] I. Composition of the lifting mechanism

[0038] Since the two-degree-of-freedom epicyclic gear train can achieve single-input single-output and double-input single-output functions by braking different gears, on the basis of the original single asynchronous motor driving the drum wire rope to drive the car carrier plate to move up and down, the present invention introduces the two-degree-of-freedom epicyclic gear train into the vertical lifting device of the car carrier plate. 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 carrier 11. The two-degree-of-freedom epicyclic gear train B for traversing is composed of a traversing mechanism small sun gear 16, a traversing mechanism planetary gear 18, a traversing mechanism large sun gear 17, a third gear 20, a fourth gear 21, and a traversing mechanism carrier 19.

[0039] 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 wire rope 4, and a lifting car carrier plate 2. Among them, 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 a second gear 12, the second gear 12 meshes with the first gear 5, the first gear 5 is fixedly connected to the large sun gear 10, the planetary gear 8 meshes with the large sun gear 10, the planetary gear 8 can rotate freely around the carrier 11, the carrier 11 is connected to the drum 7, one end of the wire rope 4 is wound on the drum 7, and the other end is connected to the lifting car carrier plate 2. The permanent magnet synchronous motor is connected to the small sun gear 6.

[0040] The main components of the lifting mechanism of the present invention are 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 car carrier plate 2.

[0041] II. Composition of the traversing mechanism

[0042] The transverse movement mechanism of the present invention consists of a transverse movement carrier plate 14, rollers 13, a track limiter 15, a DC motor, an asynchronous motor, and a two-degree-of-freedom epicyclic gear train 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 link 19 of the transverse movement mechanism).

[0043] The rollers 13 are connected to the transverse movement driving component, and the rollers 13 roll in the track limiter 15. The transverse movement driving component is composed of 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, a link 19 of the transverse movement mechanism, an asynchronous motor, and a DC motor. The link 19 of the transverse movement mechanism is connected to the rollers 13.

[0044] Compared with the traditional multi-layer stereo garage, the present embodiment has the following advantages:

[0045] (1) Under sufficient sunlight during the day, the solar power generation panel can continuously convert solar energy into electrical energy and directly store it in the battery pack, providing electrical energy for the motors of vehicle vertical lifting and horizontal movement;

[0046] (2) The two-degree-of-freedom epicyclic gear train A can directly convert the gravitational potential energy of the vehicle into DC electrical energy through the permanent magnet synchronous motor and store it in the battery pack, realizing the effective recovery of the vehicle's gravitational potential energy;

[0047] (3) The lifting two-degree-of-freedom epicyclic gear train A can achieve three working modes of single drive by the asynchronous motor, drive by the permanent magnet synchronous motor, and hybrid drive by the asynchronous motor and the permanent magnet synchronous motor through braking different gears, and can meet the following working conditions, such as (a) strong sunlight in summer, (b) weak sunlight in winter, (c) the solar power generation panel cannot work effectively at night and on cloudy and rainy days, thus ensuring the 24-hour all-weather operation of the multi-layer stereo garage;

[0048] (4) The transverse movement two-degree-of-freedom epicyclic gear train B can achieve three working modes of single drive by the asynchronous motor B, drive by the DC motor, and hybrid drive by the asynchronous motor and the DC motor through braking different gears, and can also ensure the 24-hour all-weather operation of the multi-layer stereo garage.

[0049] III. Recovery and storage of solar energy and vehicle gravitational potential energy

[0050] The solar power generation device is located at the top of the multi-layer lifting and transverse movement stereo garage, directly exposed to 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.

[0051] When the parked vehicle located above the second floor descends to the ground, the asynchronous motor brake is activated, and the asynchronous motor is in a braking state. Then, the second gear 12 and the first gear 5 are also in a braking state. Next, the brake of the permanent magnet synchronous motor is turned off, and the permanent magnet synchronous motor is in a rotatable state. Under the action of gravity, the parked vehicle 3 drives the drum 7 to rotate, and the drum 7 drives the tie rod 11 and the planet gear 8 to rotate. Since the planet gear 8 meshes with the sun gear 6, the sun gear 6 and the permanent magnet synchronous motor rotate. At this time, the permanent magnet synchronous motor is in the 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.

[0052] Assume that the rotational speed of the sun gear 6 in the lifting mechanism is , the rotational speed of the planet gear 8 is , the rotational speed of the large sun gear 10 is , the rotational speed of the tie rod 11 is , the rotational speed of the first gear 5 is , the rotational speed of the second gear 12 is , the number of teeth of the sun gear 6 is , the number of teeth of the planet 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, according to the transmission ratio calculation formula of the epicyclic gear train, there is:

[0053] (1)

[0054] When the gravitational potential energy recovery mode of the parked vehicle is activated in the lifting mechanism, at this time, the large sun gear 10 is in a braking state, and its rotational speed , then:

[0055] (2)

[0056] Since the drum 7 is fixedly connected to the tie rod 11, that is , and the permanent magnet synchronous motor is fixedly connected to the sun gear 6, that is , by deforming Equation (2), the relationship between the rotational speed of the permanent magnet synchronous motor and the rotational speed of the drum 7 can be obtained as:

[0057] (3)

[0058] The number of teeth is greater than the number of teeth . It can be seen from Equation (3) that when the gravitational potential energy recovery mode of the parked vehicle is activated, the rotational speed of the permanent magnet synchronous motor is the rotational speed of the drum rotational speed is the rotational speed of the drum several times of which is beneficial to the power generation of the permanent magnet synchronous motor.

[0059] IV. Secondary utilization of the recovered electric energy

[0060] When the electric quantity in the battery pack 25 reaches the usage requirement, under the action of the central controller 24, the DC electric energy in the battery pack 25 has two directly usable purposes:

[0061] Purpose i - directly supply power to the lifting mechanism of the parked vehicle

[0062] Turn on the brake of the asynchronous motor in the lifting structure. The lifting asynchronous motor is in the braking state. Under the action of the central controller 24, the battery pack 25 supplies power to the permanent magnet synchronous motor. The permanent magnet synchronous motor works in the motor mode and directly lifts the parked vehicle from the ground to the parking floor with available positions. The rotational speed of the drum 7 and the rotational speed of the permanent magnet synchronous motor The relationship between them is:

[0063] (4)

[0064] Purpose ii - supply power to the horizontal translation mechanism of the parked vehicle

[0065] Turn on the brake of the asynchronous motor in the translation mechanism. The asynchronous motor is in the braking state. Under the action of the central controller, the battery pack 25 supplies power to the DC motor. The rotational speed of the roller 13 and the rotational speed of the DC motor The relationship between them is:

[0066] (5)

[0067] Wherein, and are the number of teeth of the small sun gear of the translation mechanism and the large sun gear of the translation mechanism respectively.

[0068] V. Hybrid drive of the lifting mechanism

[0069] When the battery pack 25 has insufficient power, at this time, 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. The asynchronous motor and the permanent magnet synchronous motor work simultaneously to realize the input of two power sources. The tie rod 11 outputs driving power, thereby driving the drum 7 to work and realizing the lifting requirement of the parked vehicle. The rotational speed of the drum 7 and the rotational speed of the asynchronous motor A and the rotational speed of the permanent magnet synchronous motor The relationship between them is:

[0070] (6)

[0071] 6. Hybrid drive of the transverse movement mechanism

[0072] Similarly, when the battery pack 25 has insufficient power, the output torque and output speed of the DC motor in the transverse movement mechanism both decrease, and the working speed of the transverse movement mechanism cannot meet the predetermined requirements. At this time, the asynchronous motor in the transverse movement mechanism starts, and the asynchronous motor and the DC motor work simultaneously to achieve the input of two power sources. The tie rod 19 of the transverse movement mechanism outputs driving power, thereby driving the roller 13 to rotate and realizing the transverse movement requirement of the parked vehicle.

[0073] Rotational speed of the roller 13 And the rotational speed of the asynchronous motor B And the rotational speed of the DC motor The relationship between them is as follows:

[0074] (7)

[0075] 7. Separate operation of the lifting mechanism and the transverse movement mechanism

[0076] When the power of the battery pack 25 drops to a certain level, the permanent magnet synchronous motor cannot supply driving power to the lifting mechanism. At this time, when 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. The rotational speed of the drum 7 And the rotational speed of the asynchronous motor The rotational speed relationship between them is as follows:

[0077] (8)

[0078] Similarly, when the power of the battery pack 25 drops to a certain level, the DC motor cannot supply driving power to the transverse movement mechanism. At this time, when the asynchronous motor in the transverse movement mechanism is powered by the external power grid and the DC motor is braked, the transverse movement mechanism enters the traditional single asynchronous motor drive mode. The rotational speed of the roller 13 in the transverse movement mechanism And the rotational speed of the asynchronous motor The rotational speed relationship between them is as follows:

[0079] (9)

[0080] Since a solar panel 9 is also provided in this embodiment and is electrically connected to the battery pack 25; therefore, this embodiment not only ensures the 24-hour safe operation of the multi-layer lifting and transverse movement stereo garage, but also realizes the effective energy saving of the stereo garage from two aspects of solar energy replenishment and recovery of the gravitational potential energy of the parked vehicle.

[0081] The hybrid drive device for a multi-layer lifting and traversing stereo garage according to this embodiment uses a two-degree-of-freedom epicyclic gear train in the lifting mechanism. On the one hand, it can recover the gravitational potential energy of the parked vehicle during the descending process, and with the help of a permanent magnet synchronous motor, convert the gravitational potential energy into electrical energy and store it in the battery pack. On the other hand, it can also mix the power of the asynchronous motor and the permanent magnet synchronous motor for hybrid drive to achieve the lifting function of the parked car, avoiding the waste of gravitational potential energy during the descending process of the parked vehicle and realizing the effective recovery and secondary utilization of gravitational potential energy. A two-degree-of-freedom epicyclic gear train is also introduced in the traversing mechanism. On the one hand, it can use the electrical energy from the battery pack, and on the other hand, it can also achieve 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, solar panels are laid on the top of the stereo garage in this embodiment, converting solar energy into electrical energy and storing it in the battery pack, adding additional energy replenishment to the stereo garage. The comprehensive utilization of the solar power generation device and the recovery and utilization of gravitational potential energy can effectively reduce the energy consumption of the multi-layer lifting and traversing stereo garage.

[0082] Embodiment

[0083] A certain type of multi-layer stereo garage is rectangular, with five floors from 1 to 5 in the vertical direction and 10 car carriers on each floor in the horizontal direction. There is a vacant parking space on each floor to realize the out-of-warehouse and in-warehouse of parked vehicles. When a vehicle enters the warehouse, the motor drives the drum to drive the steel wire rope to lift the vehicle on the 1st floor car carrier to the 2nd - 5th floors. The motor power is 2.2KW. The horizontal movement of the car carrier is also realized by the motor driving the drum to drive the steel wire rope. The motor power is smaller than that of the vertical lifting motor, about 0.2KW. This multi-layer stereo garage on the street can be used to park ordinary family cars and SUVs. The weight of a family car is estimated at 1500 Kg, and the weight of an SUV is estimated at 2000 Kg. In order to accommodate the parking of SUVs, the height of each floor of the multi-layer stereo garage is 2.5 meters. The driving power for vehicle ascending and translation is an asynchronous motor, and a PLC is used to coordinate the work of multiple motors. This multi-layer stereo garage is powered by the urban power grid. Before using the hybrid drive device for the multi-layer stereo garage of the present invention, when a parked vehicle ascends from the 1st floor to a high-level parking space, it completely needs to use the motor to drive to overcome the gravity of the vehicle, and when the vehicle descends, it also uses the motor to slowly transport the vehicle at a high place to the 1st floor position. Not only is the gravitational potential energy during the descending process of the vehicle completely wasted, but also the electrical energy consumed during the operation of the motor is consumed at the same time.

[0084] After using the hybrid drive device for multi-layer stereo garages of the present invention, when a vehicle parks and rises to a parking space, gravitational potential energy is generated. This gravitational potential energy is generated into electricity by a generator during the process of the vehicle descending to the ground when picking up the vehicle and stored in a battery. The electric energy of the battery can be provided to the lifting mechanism and the traversing mechanism as a power source. It is further combined with the photovoltaic power generation of the solar panels on the top of the garage and stored in the battery. Since almost no electric energy is consumed when picking up the vehicle, the electric energy is converted into gravitational potential energy when the vehicle parks and is recycled by the present invention. Moreover, the energy consumption of the traversing mechanism is much lower than that of the lifting mechanism. Therefore, using the hybrid drive device for multi-layer stereo garages of the present invention can save more than 50% of the energy consumption. Taking the power consumption of 0.1 degrees for the access operation of an existing ordinary mechanical garage as an estimate, the present invention saves 0.05 degrees of electric energy per average parking and picking up of a vehicle once.

[0085] If this type of multi-layer stereo garage is used in a downtown area or a bustling commercial district, and each parking space is calculated according to being accessed and used once every three hours on average per day, then the average daily access is 320 times, and the annual saved electric energy is 11,680 degrees (0.05 degrees × 320 times × 2 times × 365 days), which is approximately equivalent to 9,344 yuan of electricity charges.

[0086] Moreover, for large commercial multi-layer stereo garages, there are more parking spaces and the vehicles entering and leaving the garage are more frequent every day. If a large amount of gravitational potential energy of these vehicles descending from the high floors to the first floor can be fully recycled, more energy consumption can be effectively saved.

[0087] In addition, the top of the multi-layer stereo garage is exposed to sunlight. Especially in the hot summer, the light intensity is high and the potential for photovoltaic power generation is great. Usually, the power generation power of each square meter of solar panel per hour is 100 - 150W. The top area of the multi-layer stereo garage is about 100 square meters, and its power generation cannot be underestimated. This embodiment makes reasonable use of it, and at the same time, the gravitational potential energy of the vehicle is also recycled. The energy consumption of the multi-layer stereo garage can be greatly reduced.

[0088] In summary, through the cooperation of the hoist, the driving gear, the driven gear, the motor, the generator and the battery pack, the present invention realizes the conversion of the gravitational potential energy during the descending process of the vehicle in the stereo garage into electric energy for storage and subsequent use in the stereo garage. Therefore, the present invention can make full use of and recycle the gravitational potential energy during the descending process of the vehicle in the stereo garage and reduce the energy consumption of the multi-layer stereo garage.

[0089] It should be emphasized that: the above is only a preferred embodiment of the present invention, and it does not impose any form of limitation on the present invention. Any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A hybrid drive method for a multi-layer stereo garage, characterized in that, It includes the following steps: Step 1: Install a gravitational potential energy recovery device at the lifting and loading platform of the multi-layer stereo garage to recover the gravitational potential energy released during the vehicle's descent from a high place and convert it into electrical energy for storage. Step 2: Use the electrical energy converted and stored in Step 1 to drive the lifting and / or lateral movement of the lifting and loading platform of the multi-layer stereo garage. In the above Step 1, the specific steps of converting gravitational potential energy into electrical energy for storage include: Step 1-1: Install a winch above the lifting and loading platform, and use the rope of the winch to tow the lifting and loading platform up and down. Step 1-2: Install a driving gear and a driven gear at the driving shaft of the winch. Drive the driving gear to rotate through the torque of the motor, and drive the generator to generate electricity through the torque of the driven gear. Step 1-3: When the lifting and loading platform rises, make the motor drive the winch to perform a lifting motion through the driving gear; when the lifting and loading platform descends, make the winch drive the generator to generate electricity through the driven gear. In the above Step 1-2, the driving gear and the driven gear adopt the form of large and small sun gears rotating coaxially. The driving shaft of the winch adopts a crankshaft, and the bent section of the winch's crankshaft adopts a planetary gear drive method. The planetary gear meshes 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 respectively drive the planetary gear to rotate forward; so that the planetary gear can drive the small sun gear to rotate in reverse when the large sun gear is stationary or drive the large sun gear to rotate in reverse when the small sun gear is stationary.

2. A hybrid drive device for a multi-layer stereo garage, characterized in that, It includes: A lifting and loading platform (2), a drum (7), a small sun gear (6), a large sun gear (10), a planetary gear (8). 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 and loading platform (2). The rotating shaft torque of the drum (7) is transmission-connected to the planetary gear (8), and the planetary gear (8) meshes with the small sun gear (6) and the large sun gear (10) respectively. 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 respectively electrically connected to the battery pack (25) after passing through the central controller (24); the motor (22) is electrically connected to the external power grid (26) after passing through the central controller (24).

3. The hybrid drive device for a multi-layered stereoscopic garage according to claim 2, characterized in that, The rotating shaft of the drum (7) is a crankshaft, and the planetary gear (8) is coaxially sleeved on the bent section of the crankshaft of the drum (7).

4. The hybrid drive device for a multi-layered stereoscopic garage according to claim 2, characterized in that, The motor (22) is an asynchronous motor, and the generator (23) is a permanent magnet synchronous motor.

5. A hybrid drive device for a multi-layered stereoscopic garage according to claim 2, characterized in that, The hybrid drive device further includes a lateral movement drive part (27), and the lateral movement drive part (27) is respectively electrically connected to the external power grid (26) and the battery pack (25) after passing through the central controller (24).

6. The hybrid drive device for a multi-layered stereoscopic garage according to claim 5, characterized in that, The lateral movement drive part (27) drives the vehicle to move laterally by the method of the large and small sun gears jointly or respectively driving the planetary gear.

7. The hybrid drive device for a multi-layered stereo garage according to claim 2, wherein, The hybrid drive device further includes a solar panel (9), and the solar panel (9) is electrically connected to the battery pack (25) after passing through a solar power generation controller (28).

8. A multi-layered three-dimensional garage, characterized in that, The multi-layered stereoscopic garage adopts the hybrid drive device described in any one of claims 2 to 7.

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