Hydrogen-electricity hybrid container stacking machine

Abstract

The utility model relates to the technical field of engineering machinery, in particular to a hydrogen-electricity hybrid container stacking machine which comprises a power system, an execution system and a direct current bus. The power system comprises a lithium battery assembly, a hydrogen fuel battery assembly, a first DC / DC converter and a power high-voltage box; the lithium battery assembly is electrically connected with the power high-voltage box, and the hydrogen fuel battery assembly is electrically connected with the power high-voltage box through the first DC / DC converter; the execution system comprises at least one execution motor used for driving the execution assembly to work and a motor controller corresponding to each execution motor, each execution motor is electrically connected with the corresponding motor controller, and all the motor controllers are electrically connected with the power high-voltage box through a direct-current bus. Compared with the prior art, the device can meet the requirement for energy cruising ability of equipment in port loading and unloading operation, and is energy-saving and environment-friendly.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, and in particular to a hydrogen-electric hybrid container stacker. Background Technology

[0002] Container stackers are the mainstream equipment for container stacking and transshipment, capable of stacking up to 8-9 layers of containers, and are characterized by high site utilization and high speed. Currently, this equipment mainly uses fuel oil or lithium batteries as its power source. With increasingly stringent environmental regulations, there are also higher requirements for energy conservation and emission reduction in agricultural machinery. Fuel oil-powered stackers are noisy during operation and easily exceed emission standards, failing to meet environmental protection requirements; while lithium battery stackers, although energy-efficient and environmentally friendly, have long charging times and short operating times, which cannot meet the energy endurance requirements of port loading and unloading operations. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, this utility model provides a hydrogen-electric hybrid container stacker, which solves the technical problems of high noise and high pollutant emissions when stackers with fuel power are used as power sources, and the problems of long charging time and short driving time when stackers with lithium batteries are used as power sources.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides a hydrogen-electric hybrid container stacker, comprising: a power system, an execution system, and a DC bus;

[0007] The power system includes a lithium battery assembly, a hydrogen fuel cell assembly, a first DC / DC converter, and a high-voltage power box; the lithium battery assembly is electrically connected to the high-voltage power box, and the hydrogen fuel cell assembly is electrically connected to the high-voltage power box through the first DC / DC converter.

[0008] The execution system includes at least one execution motor for driving the execution components, and a motor controller corresponding to each execution motor. Each execution motor is electrically connected to its corresponding motor controller, and all motor controllers are electrically connected to the power high-voltage box via a DC bus.

[0009] Optionally, the hydrogen fuel cell assembly includes a hydrogen storage tank, a hydrogen fuel cell, a second DC / DC converter, a hydrogen leak sensor, and a hydrogen tank controller;

[0010] The hydrogen storage cylinder is connected to the hydrogen refueling port of the hydrogen fuel cell via a pipeline, and a pressure reducing valve and a shut-off valve are installed on the pipeline connecting the hydrogen storage cylinder and the hydrogen refueling port of the hydrogen fuel cell.

[0011] A hydrogen leak sensor is installed on the hydrogen storage cylinder;

[0012] The shut-off valve and hydrogen leak sensor are both electrically connected to the hydrogen cylinder controller, which is electrically connected to the second DC / DC converter. The second DC / DC converter is electrically connected to the power high-voltage box via a DC bus.

[0013] Optionally, the hydrogen fuel cell assembly further includes: a cooling water tank, a third DC / DC converter, and a cooling device controller;

[0014] The outlet of the cooling water tank is connected to the inlet of the hydrogen fuel cell, and the inlet of the cooling water tank is connected to the outlet of the hydrogen fuel cell. A particulate filter, a deionization filter and a cooling pump are sequentially installed on the pipeline connecting the outlet of the cooling water tank and the inlet of the hydrogen fuel cell. A temperature control valve, a heat exchanger, a radiator and a temperature sensor are sequentially installed on the pipeline connecting the outlet of the hydrogen fuel cell and the inlet of the cooling water tank.

[0015] The particulate filter, cooling pump, deionization filter, temperature control valve, heat exchanger, radiator and temperature sensor are all electrically connected to the cooling device controller, which is electrically connected to the third DC / DC converter, which is electrically connected to the power high-voltage box via a DC bus.

[0016] Optionally, the temperature control valve is a three-way temperature control valve; the hydrogen fuel cell assembly also includes an electric heater;

[0017] The inlet of the three-way temperature control valve is connected to the coolant outlet of the hydrogen fuel cell, the outlet of the three-way temperature control valve is connected to the inlet of the cooling water tank, and the bypass port of the three-way temperature control valve is connected to the inlet of the particulate filter.

[0018] The heat exchanger, radiator, and temperature sensor are all installed on the pipeline connecting the outlet of the three-way temperature control valve and the inlet of the cooling water tank. The electric heater is installed on the pipeline connecting the bypass port of the three-way temperature control valve and the inlet of the particulate filter.

[0019] Both the electric heater and the three-way temperature control valve are electrically connected to the cooling device controller.

[0020] Optionally, the execution system includes a walking component, a walking motor, and a walking motor controller;

[0021] The walking motor controller is electrically connected to the power high-voltage box via a DC bus, the walking motor is electrically connected to the walking motor controller, and the walking motor is connected to the walking component drive.

[0022] The travel components include: universal coupling and drive axle;

[0023] The output end of the walking motor is driven to the input end of the universal coupling, and the output end of the universal coupling is driven to the input shaft of the drive axle;

[0024] The walking motor is a permanent magnet synchronous motor.

[0025] Optionally, the execution system includes: a lifting assembly, a lifting motor, and a lifting motor controller;

[0026] The lifting motor controller is electrically connected to the power high-voltage box via a DC bus, the lifting motor is electrically connected to the lifting motor controller, and the lifting motor is connected to the lifting assembly via a drive.

[0027] The lifting assembly includes: a lifting coupling, a lifting pump, a lifting coupling bell housing, and a lifting cylinder;

[0028] The output end of the lifting motor is connected to the input end of the lifting pump through a lifting coupling. The bell housing of the lifting coupling is arranged around the lifting coupling. The lifting pump is connected to the lifting cylinder and is used to drive the lifting cylinder to extend and retract, thereby driving the forklift lifting device to rise or fall.

[0029] The lifting motor is a permanent magnet synchronous motor;

[0030] The lifting pump is a bidirectional hydraulic pump.

[0031] Optionally, the execution system further includes: an auxiliary motor, an auxiliary motor controller, and auxiliary components;

[0032] The auxiliary motor controller is electrically connected to the auxiliary motor.

[0033] The auxiliary motor is electrically connected to the power high-voltage box via a DC bus, and the auxiliary motor and auxiliary components are connected by a drive.

[0034] The auxiliary components include: an auxiliary hydraulic pump, a brake gear pump, an auxiliary pump coupling, an auxiliary pump bell housing, a hydraulic steering gear, a swing cylinder, and a brake valve; wherein the auxiliary hydraulic pump is a through-shaft type;

[0035] The auxiliary motor is sequentially connected to the auxiliary hydraulic pump and the brake gear pump via an auxiliary pump coupling; the auxiliary pump bell is arranged around the auxiliary pump coupling between the auxiliary motor and the auxiliary hydraulic pump.

[0036] The auxiliary hydraulic pump is connected to the hydraulic steering gear and is used to drive the steering of the entire forklift vehicle;

[0037] The auxiliary hydraulic pump is connected to the swing cylinder and is used to drive the swing cylinder to extend and retract, thereby driving the forklift lifting device to swing.

[0038] The brake gear pump is connected to the brake valve and is used to drive the forklift vehicle to brake and park.

[0039] Optionally, the forklift also includes a travel motor buffer protector, a lifting motor buffer protector, an auxiliary motor buffer protector, and a hydrogen fuel cell protector;

[0040] The execution system includes a walking motor, a walking motor controller, a lifting motor, a lifting motor controller, an auxiliary motor, and an auxiliary motor controller;

[0041] The travel motor and travel motor controller are electrically connected, the lifting motor and lifting motor controller are electrically connected, the auxiliary motor and auxiliary motor controller are electrically connected, and the travel motor controller, lifting motor controller and auxiliary motor controller are all electrically connected to the power high voltage box through a DC bus.

[0042] The travel motor buffer protector is installed on the connection line between the power high voltage box and the travel motor controller. It is electrically connected to the travel motor controller and also electrically connected to the power high voltage box through the DC bus.

[0043] The lift motor buffer protector is installed on the connection line between the power high voltage box and the lift motor controller, and is electrically connected to the lift motor controller and also electrically connected to the power high voltage box through the DC bus.

[0044] The auxiliary motor buffer protector is placed on the connection line between the power high voltage box and the auxiliary motor controller. At the same time as the auxiliary motor controller is electrically connected, it is also electrically connected to the power high voltage box through the DC bus.

[0045] The hydrogen fuel cell protector is located on the connection line between the first DC / DC converter and the power high-voltage box.

[0046] Optionally, the forklift also includes a start-up battery buffer protector;

[0047] The execution system also includes a start-up battery, a fourth DC / DC converter, a cooling fan controller, and a cooling fan;

[0048] The cooling fan controller and the cooling fan are electrically connected, and the starting battery and the fourth DC / DC converter are electrically connected;

[0049] The start-up battery buffer protector is electrically connected to the fourth DC / DC converter, the cooling fan controller, and the power high-voltage box.

[0050] Optionally, the power high-voltage box is provided with two battery charging ports and one battery cooling high-voltage port.

[0051] (III) Beneficial Effects

[0052] The beneficial effects of this utility model are: the hydrogen-electric hybrid container stacker provided by this utility model uses lithium batteries and hydrogen fuel cells as power sources, which not only meets the port operation requirements for equipment endurance, but also reduces vehicle noise and pollutant emissions during the operation of the stacker. Attached Figure Description

[0053] Figure 1 This is a schematic diagram of a hydrogen-electric hybrid container stacker provided in an embodiment of the present invention;

[0054] Figure 2 This is a schematic diagram of the cooling and filtration device provided in an embodiment of the present invention;

[0055] Figure 3 This is a schematic diagram of the walking component structure provided in an embodiment of the present invention;

[0056] Figure 4 This is a schematic diagram of the lifting component structure provided in an embodiment of the present invention;

[0057] Figure 5 This is a schematic diagram of the connection relationship of the auxiliary hydraulic pump provided in an embodiment of the present invention;

[0058] Figure 6 This is a schematic diagram of the connection relationship of the brake gear pump provided in an embodiment of the present invention.

[0059] [Explanation of Labels in the Attached Image]

[0060] 10: Lithium-ion battery assembly; 20: Hydrogen fuel cell assembly; 30: Power high-voltage box; 40: Walking motor controller; 50: Lifting motor controller; 60: Auxiliary motor controller; 70: Walking motor; 80: Lifting motor; 90: Auxiliary motor; 100: Fourth DC / DC converter; 110: Starting battery; 120: Cooling fan controller; 130: Cooling fan; 140: Walking motor buffer protector; 150: Lifting motor buffer protector; 160: Auxiliary motor buffer protector; 170: Starting battery buffer protector; 180: Hydrogen fuel cell protector; 190: First DC / DC converter; 200: DC bus;

[0061] 21: Electric heater; 22: Cooling water tank; 23: Particulate filter; 24: Deionization filter; 25: Cooling pump; 26: Three-way temperature control valve; 27: Heat exchanger; 28: Radiator; 29: Temperature sensor;

[0062] 71: Universal coupling; 72: Drive axle;

[0063] 81: Lifting coupling; 82: Lifting coupling bell housing; 83: Lifting pump;

[0064] 91: Auxiliary hydraulic pump; 92: Auxiliary pump bell; 93: Auxiliary pump coupling; 94: Brake gear pump. Detailed Implementation

[0065] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0066] This utility model proposes a hydrogen-electric hybrid container stacker that uses both lithium batteries and hydrogen fuel cells as power sources. While meeting the port operation requirements for equipment endurance, it reduces vehicle noise and pollutant emissions during stacker operation.

[0067] All motor controllers (walking motor controller 40, lifting motor controller 50, and auxiliary motor controller 60), buffer protectors (walking motor buffer protector 140, lifting motor buffer protector 150, auxiliary motor buffer protector 160, starting battery buffer protector 170, and hydrogen fuel cell protector 180), power high-voltage box 30, cooling device controller, hydrogen cylinder controller, and DC / DC converters (first DC / DC converter 190, second DC converter, third DC converter, and fourth DC converter 100) mentioned in this document are existing devices. The interaction process between the above components is all prior art, and this embodiment does not make any improvements to it.

[0068] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0069] Example 1

[0070] This embodiment provides a hydrogen-electric hybrid container stacker, including: a power system, an execution system, and a DC bus 200;

[0071] The power system includes a lithium battery assembly 10, a hydrogen fuel cell assembly 20, a first DC / DC converter 190, and a high-voltage power box 30; the lithium battery assembly 10 is electrically connected to the high-voltage power box 30, and the hydrogen fuel cell assembly 20 is electrically connected to the high-voltage power box 30 through the first DC / DC converter 190.

[0072] The execution system includes at least one execution motor for driving the execution components, and a motor controller corresponding to each execution motor. Each execution motor is electrically connected to its corresponding motor controller, and all motor controllers are electrically connected to the power high-voltage box 30 via DC bus 200.

[0073] This utility model proposes a hydrogen-electric hybrid container stacker that uses both lithium batteries and hydrogen fuel cells as power sources. While meeting the port operation requirements for equipment endurance, it reduces vehicle noise and pollutant emissions during stacker operation.

[0074] Example 2

[0075] This embodiment provides a hydrogen-electric hybrid container stacker, the internal connection of which is as follows: Figure 1 As shown, it includes: a power system and an execution system;

[0076] The power system includes a lithium battery assembly 10, a hydrogen fuel cell assembly 20, a first DC / DC converter 190, and a high-voltage power box 30; the lithium battery assembly 10 is electrically connected to the high-voltage power box 30, and the hydrogen fuel cell assembly 20 is electrically connected to the high-voltage power box 30 through the first DC / DC converter 190.

[0077] The execution system includes at least one execution motor for driving the execution components, and a motor controller corresponding to each execution motor. Each execution motor is electrically connected to its corresponding motor controller, and all motor controllers are electrically connected to the power high-voltage box 30 via DC bus 200.

[0078] The power high-voltage box 30 includes a PDU unit and a BMS battery management unit; and a hydrogen fuel cell protector 180 is provided on the connection line between the power high-voltage box 30 and the first DC / DC converter 190, the hydrogen fuel cell protector 180 including a hydrogen fuel cell circuit breaker and a hydrogen fuel cell fuse.

[0079] The hydrogen fuel cell assembly 20 includes a hydrogen storage tank, a hydrogen fuel cell, a second DC / DC converter, a hydrogen leak sensor, a hydrogen tank controller, a cooling water tank 22, a third DC / DC converter, a cooling device controller, and an electric heater 21.

[0080] The hydrogen supply device consists of a hydrogen storage cylinder, a hydrogen fuel cell, a second DC / DC converter, a hydrogen leak sensor, and a hydrogen cylinder controller. The hydrogen storage cylinder is connected to the hydrogen filling port of the hydrogen fuel cell through a pipeline, and a pressure reducing valve and a shut-off valve are installed on the pipeline connecting the hydrogen storage cylinder and the hydrogen filling port of the hydrogen fuel cell.

[0081] A hydrogen leak sensor is installed on the hydrogen storage cylinder;

[0082] The shut-off valve and hydrogen leak sensor are both electrically connected to the hydrogen cylinder controller, which is electrically connected to the second DC / DC converter. The second DC / DC converter is electrically connected to the power high-voltage box 30 via DC bus 200.

[0083] The hydrogen storage tank contains high-pressure gas, which is reduced to a pressure that the module can withstand by a pressure reducing valve to supply hydrogen to the hydrogen fuel cell. The shut-off valve, hydrogen leak sensor, and hydrogen tank controller provide the structural basis for the shut-off valve to close in the event of hydrogen leak or module malfunction.

[0084] The cooling water tank 22, the third DC / DC converter, the cooling device controller, and the electric heater 21 constitute a cooling and filtration device, such as Figure 2 As shown, this is used to dissipate heat from the hydrogen fuel cell, ensuring the module's operating temperature remains within acceptable limits. Since the coolant flows over the electrode plates of the hydrogen fuel cell, impurities and ions in the coolant must be filtered out to prevent leakage and burning of the module's electrode plates. Furthermore, the outlet of the cooling water tank 22 is connected to the coolant inlet of the hydrogen fuel cell, and the inlet of the cooling water tank 22 is connected to the coolant outlet of the hydrogen fuel cell. A particulate filter 23, a deionization filter 24, and a cooling pump 25 are sequentially installed on the pipeline connecting the outlet of the cooling water tank 22 and the coolant inlet of the hydrogen fuel cell. A temperature control valve, a heat exchanger 27, a radiator 28, and a temperature sensor 29 are sequentially installed on the pipeline connecting the coolant outlet of the hydrogen fuel cell and the inlet of the cooling water tank 22. The particulate filter 23, cooling pump 25, deionization filter 24, temperature control valve, heat exchanger 27, radiator 28, and temperature sensor 29 are all electrically connected to the cooling device controller. The cooling device controller is electrically connected to the third DC / DC converter, and the third DC / DC converter is electrically connected to the power high-voltage box 30 via the DC bus 200. The radiator 28 includes a heat dissipation device and a radiator fan. The radiator fan directs airflow toward the heat dissipation device. Both the heat dissipation device and the radiator fan are electrically connected to the cooling device controller.

[0085] The temperature control valve is a three-way temperature control valve 26. The inlet of the three-way temperature control valve 26 is connected to the coolant outlet of the hydrogen fuel cell, the outlet of the three-way temperature control valve 26 is connected to the inlet of the cooling water tank 22, and the bypass port of the three-way temperature control valve 26 is connected to the inlet of the particulate filter 23. The heat exchanger 27, the radiator 28, and the temperature sensor 29 are all installed on the pipeline connecting the outlet of the three-way temperature control valve 26 to the inlet of the cooling water tank 22. The electric heater 21 is installed on the pipeline connecting the bypass port of the three-way temperature control valve 26 to the inlet of the particulate filter 23. The electric heater 21 and the three-way temperature control valve 26 are both electrically connected to the cooling device controller.

[0086] The execution system includes a walking assembly, a walking motor 70, a walking motor controller 40, a lifting assembly, a lifting motor 80, a lifting motor controller 50, an auxiliary motor 90, an auxiliary motor controller 60, and auxiliary components;

[0087] The walking motor controller 40 is electrically connected to the power high voltage box 30 via the DC bus 200, the walking motor 70 is electrically connected to the walking motor controller 40, and the walking motor 70 is connected to the walking component drive.

[0088] Walking components such as Figure 3 As shown, it includes: universal coupling 71 and drive axle;

[0089] The output end of the walking motor 70 is driven to the input end of the universal coupling 71, and the output end of the universal coupling 71 is driven to the input shaft of the drive axle.

[0090] The walking motor 70 is a permanent magnet synchronous motor. This design allows the entire machine to continue moving due to inertia even when the walking motor 70 stops driving, thereby driving the walking motor 70 to rotate. The walking motor 70 is in a power generation state, generating current that flows back to the DC bus 200, providing a structural basis for recovering kinetic energy.

[0091] The lifting motor controller 50 is electrically connected to the power high-voltage box 30 via the DC bus 200, the lifting motor 80 is electrically connected to the lifting motor controller 50, and the lifting motor 80 is connected to the lifting assembly via a drive.

[0092] Lifting components such as Figure 4 As shown, it includes: lifting coupling 81, lifting pump 83, lifting coupling bell housing and lifting cylinder;

[0093] The output end of the lifting motor 80 is connected to the input end of the lifting pump 83 through the lifting coupling 81. The bell housing of the lifting coupling is arranged around the lifting coupling 81. The lifting pump 83 is connected to the lifting cylinder and is used to drive the lifting cylinder to extend and retract, thereby driving the forklift lifting device to rise or fall.

[0094] The lifting motor 80 is a permanent magnet synchronous motor, and the lifting pump 83 is a bidirectional hydraulic pump. With this structure, when the heavy object is lowered, the lifting pump 83 operates as a hydraulic motor. The high-pressure oil generated by the heavy object drives the motor to rotate, which in turn drives the lifting motor 80 to reverse and generate electricity. The generated current flows back to the DC bus 200, providing a structural basis for recovering the potential energy of the descent.

[0095] The auxiliary motor controller 60 is electrically connected to the auxiliary motor 90. The auxiliary motor 90 is electrically connected to the power high-voltage box 30 through the DC bus 200. The auxiliary motor 90 and the auxiliary components are connected by a drive.

[0096] The auxiliary components are as follows Figure 5 and Figure 6 As shown, it includes: an auxiliary hydraulic pump 91, a brake gear pump 94, an auxiliary pump coupling 93, an auxiliary pump bell 92, a hydraulic steering gear, a swing cylinder, and a brake valve; wherein the auxiliary hydraulic pump 91 is a through-shaft type;

[0097] The auxiliary motor 90 is sequentially connected to the auxiliary hydraulic pump 91 and the brake gear pump 94 via the auxiliary pump coupling 93. The auxiliary pump bell 92 surrounds the auxiliary pump coupling 93 between the auxiliary motor 90 and the auxiliary hydraulic pump 91. The auxiliary hydraulic pump 91 is connected to the hydraulic steering gear and is used to drive the steering of the entire forklift vehicle. The auxiliary hydraulic pump 91 is also connected to the swing cylinder and is used to drive the swing cylinder to extend and retract, thereby driving the forklift lifting device to swing. The brake gear pump 94 is connected to the brake valve and is used to drive the forklift vehicle to brake and park. Generally, the brake valve includes a parking brake valve and a service brake valve.

[0098] Furthermore, a single DC / DC converter can be used to integrate the first DC / DC converter 190, the second DC / DC converter, and the third DC / DC converter; or, the second DC / DC converter and the third DC / DC converter can be integrated; or, the second DC / DC converter and the third DC / DC converter can be integrated, along with any motor controller (walking motor controller 40, lifting motor controller 50, or auxiliary motor controller 60).

[0099] Furthermore, the forklift also includes a travel motor buffer protector 140, a lifting motor buffer protector 150, an auxiliary motor buffer protector 160, and a hydrogen fuel cell protector 180.

[0100] The travel motor buffer protector 140 is installed on the connection line between the power high voltage box 30 and the travel motor controller 40, and is electrically connected to the travel motor controller 40 and also electrically connected to the power high voltage box 30 through the DC bus 200.

[0101] The lifting motor buffer protector 150 is installed on the connection line between the power high voltage box 30 and the lifting motor controller 50, and is electrically connected to the lifting motor controller 50 and electrically connected to the power high voltage box 30 through the DC bus 200.

[0102] The auxiliary motor buffer protector 160 is placed on the connection line between the power high voltage box 30 and the auxiliary motor controller 60. At the same time as the auxiliary motor controller 60 is electrically connected, it is also electrically connected to the power high voltage box 30 through the DC bus 200.

[0103] The hydrogen fuel cell protector 180 is located on the connection line between the first DC / DC converter 190 and the power high-voltage box 30.

[0104] Furthermore, the forklift also includes a start-up battery buffer protector 170;

[0105] The execution system also includes a start-up battery 110, a fourth DC / DC converter 100, a cooling fan controller 120, and a cooling fan 130;

[0106] The cooling fan controller 120 and the cooling fan 130 are electrically connected, and the starting battery 110 and the fourth DC / DC converter 100 are electrically connected.

[0107] The start-up battery buffer protector 170 is electrically connected to the fourth DC / DC converter 100, the cooling fan controller 120, and the power high-voltage box 30, respectively.

[0108] Furthermore, the power high-voltage box 30 is equipped with two battery charging ports and one battery cooling high-voltage port.

[0109] This embodiment provides a hydrogen-electric hybrid container stacker that uses a hydrogen-electric hybrid battery as a power source. It can be filled with hydrogen in 3-5 minutes to meet the requirements for range, and the reaction produces water, so there is no emission problem. That is, while meeting the port operation requirements for equipment range, it reduces vehicle noise and pollutant emissions during the operation of the stacker.

[0110] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0111] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydrogen-electric hybrid container stacker, characterized in that, include: Power system, execution system and DC bus (200); The power system includes a lithium battery assembly (10), a hydrogen fuel cell assembly (20), a first DC / DC converter (190), and a high-voltage power box (30); the lithium battery assembly (10) is electrically connected to the high-voltage power box (30), and the hydrogen fuel cell assembly (20) is electrically connected to the high-voltage power box (30) through the first DC / DC converter (190); The execution system includes at least one execution motor for driving the execution components, and a motor controller corresponding to each execution motor. Each execution motor is electrically connected to its corresponding motor controller, and all motor controllers are electrically connected to the power high-voltage box (30) via a DC bus (200).

2. The hydrogen-electric hybrid container stacker according to claim 1, characterized in that, The hydrogen fuel cell assembly (20) includes a hydrogen storage tank, a hydrogen fuel cell, a second DC / DC converter, a hydrogen leak sensor, and a hydrogen tank controller. The hydrogen storage cylinder is connected to the hydrogen refueling port of the hydrogen fuel cell via a pipeline, and a pressure reducing valve and a shut-off valve are installed on the pipeline connecting the hydrogen storage cylinder and the hydrogen refueling port of the hydrogen fuel cell. A hydrogen leak sensor is installed on the hydrogen storage cylinder; The shut-off valve and hydrogen leak sensor are both electrically connected to the hydrogen cylinder controller, which is electrically connected to the second DC / DC converter. The second DC / DC converter is electrically connected to the power high-voltage box (30) via the DC bus (200).

3. The hydrogen-electric hybrid container stacker according to claim 2, characterized in that, The hydrogen fuel cell assembly (20) also includes: a cooling water tank (22), a third DC / DC converter, and a cooling device controller; The outlet of the cooling water tank (22) is connected to the inlet of the coolant of the hydrogen fuel cell, and the inlet of the cooling water tank (22) is connected to the outlet of the coolant of the hydrogen fuel cell. A particulate filter (23), a deionization filter (24) and a cooling pump (25) are sequentially installed on the pipeline connecting the outlet of the cooling water tank (22) and the inlet of the coolant of the hydrogen fuel cell. A temperature control valve, a heat exchanger (27), a radiator (28) and a temperature sensor (29) are sequentially installed on the pipeline connecting the outlet of the coolant of the hydrogen fuel cell and the inlet of the cooling water tank (22). The particulate filter (23), cooling pump (25), deionization filter (24), temperature control valve, heat exchanger (27), radiator (28) and temperature sensor (29) are all electrically connected to the cooling device controller. The cooling device controller is electrically connected to the third DC / DC converter. The third DC / DC converter is electrically connected to the power high-voltage box (30) through the DC bus (200).

4. The hydrogen-electric hybrid container stacker according to claim 3, characterized in that, The temperature control valve is a three-way temperature control valve (26); the hydrogen fuel cell assembly (20) also includes an electric heater (21); The inlet of the three-way temperature control valve (26) is connected to the coolant outlet of the hydrogen fuel cell, the outlet of the three-way temperature control valve (26) is connected to the inlet of the cooling water tank (22), and the bypass port of the three-way temperature control valve (26) is connected to the inlet of the particulate filter (23). The heat exchanger (27), radiator (28) and temperature sensor (29) are all installed on the pipeline connecting the outlet of the three-way temperature control valve (26) and the inlet of the cooling water tank (22). The electric heater (21) is installed on the pipeline connecting the bypass port of the three-way temperature control valve (26) and the inlet of the particulate filter (23). The electric heater (21) and the three-way temperature control valve (26) are both electrically connected to the cooling device controller.

5. The hydrogen-electric hybrid container stacker according to claim 1, characterized in that, The execution system includes a walking component, a walking motor (70), and a walking motor controller (40); The walking motor controller (40) is electrically connected to the power high voltage box (30) via the DC bus (200), the walking motor (70) is electrically connected to the walking motor controller (40), and the walking motor (70) is connected to the walking component drive. The travel assembly includes: a universal coupling (71) and a drive axle (72); The output end of the walking motor (70) is driven to the input end of the universal coupling (71), and the output end of the universal coupling (71) is driven to the input shaft of the drive axle (72); The walking motor (70) is a permanent magnet synchronous motor.

6. The hydrogen-electric hybrid container stacker according to claim 1, characterized in that, The execution system includes: a lifting assembly, a lifting motor (80), and a lifting motor controller (50); The lifting motor controller (50) is electrically connected to the power high voltage box (30) via the DC bus (200), the lifting motor (80) is electrically connected to the lifting motor controller (50), and the lifting motor (80) is connected to the lifting assembly via transmission. The lifting assembly includes: a lifting coupling (81), a lifting pump (83), a lifting coupling bell housing (82), and a lifting cylinder; The output end of the lifting motor (80) is connected to the input end of the lifting pump (83) through the lifting coupling (81). The bell housing (82) of the lifting coupling is arranged around the lifting coupling (81). The lifting pump (83) is connected to the lifting cylinder and is used to drive the lifting cylinder to extend and retract, thereby driving the forklift lifting device to rise or fall. The lifting motor (80) is a permanent magnet synchronous motor; The lifting pump (83) is a bidirectional hydraulic pump.

7. The hydrogen-electric hybrid container stacker according to claim 1, characterized in that, The execution system also includes: an auxiliary motor (90), an auxiliary motor controller (60), and auxiliary components; The auxiliary motor controller (60) is electrically connected to the auxiliary motor (90). The auxiliary motor (90) is electrically connected to the power high voltage box (30) via the DC bus (200), and the auxiliary motor (90) and the auxiliary components are connected by transmission. The auxiliary components include: an auxiliary hydraulic pump (91), a brake gear pump (94), an auxiliary pump coupling (93), an auxiliary pump bell (92), a hydraulic steering gear, a swing cylinder, and a brake valve; wherein the auxiliary hydraulic pump (91) is a through-shaft type; The auxiliary motor (90) is connected to the auxiliary hydraulic pump (91) and the brake gear pump (94) in sequence via the auxiliary pump coupling (93); the auxiliary pump bell (92) is arranged around the auxiliary pump coupling (93) between the auxiliary motor (90) and the auxiliary hydraulic pump (91); The auxiliary hydraulic pump (91) is connected to the hydraulic steering gear and is used to drive the steering of the entire forklift vehicle; The auxiliary hydraulic pump (91) is connected to the swing cylinder and is used to drive the swing cylinder to extend and retract, thereby driving the forklift lifting device to swing. The brake gear pump (94) is connected to the brake valve and is used to drive the forklift vehicle to brake and park.

8. The hydrogen-electric hybrid container stacker according to claim 1, characterized in that, The forklift also includes a travel motor buffer protector (140), a lifting motor buffer protector (150), an auxiliary motor buffer protector (160), and a hydrogen fuel cell protector (180); The execution system includes a walking motor (70), a walking motor controller (40), a lifting motor (80), a lifting motor controller (50), an auxiliary motor (90), and an auxiliary motor controller (60); The walking motor (70) and the walking motor controller (40) are electrically connected, the lifting motor (80) and the lifting motor controller (50) are electrically connected, the auxiliary motor (90) and the auxiliary motor controller (60) are electrically connected, and the walking motor controller (40), the lifting motor controller (50) and the auxiliary motor controller (60) are all electrically connected to the power high voltage box (30) through the DC bus (200); The walking motor buffer protector (140) is installed on the connection line between the power high voltage box (30) and the walking motor controller (40), and is electrically connected to the walking motor controller (40) and electrically connected to the power high voltage box (30) through the DC bus (200); The lifting motor buffer protector (150) is installed on the connection line between the power high voltage box (30) and the lifting motor controller (50), and is electrically connected to the lifting motor controller (50) and electrically connected to the power high voltage box (30) through the DC bus (200). The auxiliary motor buffer protector (160) is placed on the connection line between the power high voltage box (30) and the auxiliary motor controller (60), and while the auxiliary motor controller (60) is electrically connected, it is also electrically connected to the power high voltage box (30) through the DC bus (200); The hydrogen fuel cell protector (180) is located on the connection line between the first DC / DC converter (190) and the power high-voltage box (30).

9. The hydrogen-electric hybrid container stacker according to claim 1, characterized in that, The forklift also includes a start-up battery buffer protector (170); The execution system also includes a start-up battery (110), a fourth DC / DC converter (100), a cooling fan controller (120), and a cooling fan (130); The cooling fan controller (120) and the cooling fan (130) are electrically connected, and the starting battery (110) and the fourth DC / DC converter (100) are electrically connected; The start-up battery buffer protector (170) is electrically connected to the fourth DC / DC converter (100), the cooling fan controller (120), and the power high-voltage box (30), respectively.

10. The hydrogen-electric hybrid container stacker according to claim 1, characterized in that, The power high-voltage box (30) is equipped with two battery charging ports and one battery cooling high-voltage port.

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