Non-road mobile machine and hybrid power device and control method thereof

Abstract

The invention relates to a non-road mobile machine and a hybrid power device and a control method thereof, the non-road mobile machine comprises the hybrid power device, the hybrid power device comprises a transfer case, an engine interface, a first output end and a second output end, the transfer case comprises a case body, and the engine interface, the first output end and the second output end are arranged on the case body; the first output end is provided with a power generation connector, and the second output end is provided with a hydraulic pump connector. The engine is connected with the transfer case through the engine interface; the hybrid power mechanism comprises a power generator and a hydraulic pump, and the power generator is connected with the transfer case through the power generation interface; the hydraulic pump is connected with the transfer case through the hydraulic pump interface; wherein the engine drives the generator to generate electricity through the transfer case, and the rotating speed of the generator and the rotating speed of the hydraulic pump are synchronously adjusted through the transfer case. The invention further provides a control method of the hybrid power device.

Description

Technical Field

[0001] The present invention relates to a non-road mobile machine, in particular to a non-road mobile machine and a hybrid device and a control method thereof. Background Art

[0002] At present, the hybrid power transmission system of non-road mobile machinery is an engine-driven generator, which supplies power to the motor controllers of each system to drive the motor, and the motor then drives the hydraulic pump. Its structure is complex and has many transmission components, which reduces the transmission efficiency, making the overall structure more complex and the layout more difficult.

[0003] At the same time, the thermal management systems used in existing technologies all have split structures, one part of which is a combined radiator for the engine's intercooler air, engine coolant, and hydraulic oil, and the other part is a coolant radiator for the electric drive components. The two are installed independently, making the overall layout of the machine complex. In addition, the coolant radiators of the electric drive components all use a 24V or 12V low-power motor to drive the fan for heat dissipation. Since the motor itself has a low power, the fan's heat dissipation power is relatively low, so the overall volume of the electric drive coolant radiator is relatively large. In addition, because the electric drive coolant radiator needs to ensure that the flow direction of the cooling air is consistent with the cooling air flow direction of the engine main radiator, the layout of the entire machine needs to reserve a large space, making it difficult to meet the design requirements. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a non-road mobile machine and a hybrid device and control method thereof in response to the above-mentioned defects of the prior art.

[0005] In order to achieve the above-mentioned object, the present invention provides a hybrid device for a non-road mobile machine, comprising:

[0006] The transfer case includes a case body and an engine interface, a first output end, and a second output end provided on the case body; the first output end is provided with a power generation interface, and the second output end is provided with a hydraulic pump interface;

[0007] an engine connected to the transfer case via the engine interface;

[0008] The hybrid mechanism includes a generator and a hydraulic pump, wherein the generator is connected to the transfer case via the power generation interface; the hydraulic pump is connected to the transfer case via the hydraulic pump interface;

[0009] The engine drives the generator to generate electricity through the transfer case, and the transfer case synchronously adjusts the rotational speeds of the generator and the hydraulic pump.

[0010] The hybrid device of the non-road mobile machinery further comprises:

[0011] A distribution box is connected to the generator through a first controller, and the first controller converts the alternating current of the generator into direct current and inputs it into the distribution box; the distribution box is respectively connected to the energy storage system and the first power-consuming mechanism, and distributes electrical energy to the energy storage system and the first power-consuming mechanism as needed.

[0012] The hybrid device of the non-road mobile machinery further comprises:

[0013] The second controller is connected to the energy storage system; the first power-consuming mechanism includes a travel controller, an auger controller, a DCAC inverter and a DCDC converter, which are respectively connected to the second controller.

[0014] The hybrid device of the non-road mobile machinery further comprises:

[0015] The third controller is connected to the engine; the second controller is connected to the first controller and the third controller respectively, the second controller reads the load demand of the first power-consuming mechanism, and adjusts the speed of the engine through the third controller and the power generation of the generator through the first controller.

[0016] The hybrid device of the non-road mobile machinery further comprises:

[0017] a third controller connected to the engine; and

[0018] The fourth controller is connected to the first controller, the second controller and the third controller respectively. The fourth controller controls the second controller to read the load demand of the first power-consuming mechanism, and adjusts the speed of the engine through the third controller and the power generation of the generator through the first controller.

[0019] The hybrid device of the above-mentioned non-road mobile machinery, wherein the second controller establishes communication with the third controller and starts the engine through the third controller; or, the second controller establishes communication with the first controller and starts the generator through the first controller, and the generator starts the engine through the transfer case.

[0020] The above-mentioned hybrid device of non-road mobile machinery, wherein the hydraulic pump includes a scraper pump and a rammer pump, the hydraulic pump interface includes a first hydraulic pump interface and a second hydraulic pump interface, the scraper pump is installed on the first hydraulic pump interface and connected to the scraper motor; the rammer pump is installed on the second hydraulic pump interface and connected to the rammer motor; a scraper solenoid valve is arranged between the scraper pump and the scraper motor, and a rammer solenoid valve is arranged between the rammer pump and the rammer motor; the second controller is respectively connected to the scraper solenoid valve and the rammer solenoid valve, and adjusts the output torque and speed of the scraper motor and the rammer motor through the scraper solenoid valve and the rammer solenoid valve respectively.

[0021] The hybrid device of the non-road mobile machinery, wherein the hybrid device further includes a heat dissipation mechanism, further includes:

[0022] Air guide hood;

[0023] A fan is provided corresponding to the air guide cover;

[0024] a heat dissipation component, disposed on one side of the air scoop, comprising an intercooler air radiator, an engine coolant radiator, an electric drive coolant radiator, and a hydraulic oil radiator, which are arranged in parallel; the intercooler air radiator and the engine coolant radiator are respectively connected to the engine; the electric drive coolant radiator is connected to the first power-consuming mechanism and the generator control assembly; and the hydraulic oil radiator is connected to the hydraulic pump; and

[0025] A fan speed changing mechanism is connected to the fan; the fan speed changing mechanism is connected to the second controller; the second controller is connected to the heat dissipation component and controls the fan speed changing mechanism to adjust the fan speed according to the temperature data of the heat dissipation component.

[0026] The hybrid device of the above-mentioned non-road mobile machinery, wherein the output end of the electric drive coolant radiator is provided with a first heat dissipation circuit, a second heat dissipation circuit and a third heat dissipation circuit in parallel; the travel controller and the travel motor are arranged on the first heat dissipation circuit; the auger controller and the auger motor are arranged on the second heat dissipation circuit; the first controller and the generator are arranged on the third heat dissipation circuit.

[0027] In order to better achieve the above-mentioned objectives, the present invention also provides a non-road mobile machine, which includes the above-mentioned hybrid device.

[0028] In order to better achieve the above-mentioned object, the present invention further provides a control method of the above-mentioned hybrid device, comprising the following steps:

[0029] S100, starting the engine, the engine driving the generator to generate electricity through the transfer case, and the transfer case synchronously adjusting the speed of the generator and the hydraulic pump;

[0030] S200, the second controller reads the load demand of the first power-consuming mechanism, and adjusts the speed of the engine through the third controller and the power generation of the generator through the first controller; and

[0031] S300 , controlling the solenoid valve through the second controller to adjust the output torque and speed of the motor connected to the hydraulic pump.

[0032] The beneficial effects of the present invention are:

[0033] The engine of the present invention can drive the generator and the hydraulic pump at the same time through the transfer case, which not only reduces the transmission components, simplifies the overall structure, and realizes a compact and reasonable overall layout, but also improves the overall transmission efficiency of the power transmission system; the engine can synchronously adjust the speed of the generator and the hydraulic pump through the transfer case, so that the generator and the hydraulic pump can work in the high-efficiency zone for a longer time, further improving the overall power transmission efficiency of the hybrid device; the thermal management system is integrated through the heat dissipation mechanism, reducing the thermal management components and optimizing the heat dissipation air flow direction, making the overall structural layout of the machine simpler; the starting efficiency of the hybrid device is improved through the two starting modes of engine starter starting and generator reverse starting; the generator reverse starting can more easily deal with the starting difficulty problem caused by excessive system load in non-road mobile machinery in plateau and low temperature conditions, ensuring that the engine can quickly enter the working state; at the same time, in conjunction with the automatic start-stop technology, the fuel consumption and noise level of the hybrid device are reduced, improving the economy of the equipment and the comfort of operation and driving.

[0034] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but this does not limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 Schematic diagram of the structure of a hybrid device according to an embodiment of the present invention;

[0036] Figure 2 This is a schematic structural diagram of a transfer case according to an embodiment of the present invention;

[0037] Figure 3 This is a schematic structural diagram of a heat dissipation mechanism according to an embodiment of the present invention;

[0038] Figure 4 FIG. 1 is a diagram showing the working principle of a hybrid device according to an embodiment of the present invention.

[0039] Among them, the reference numerals

[0040] 1 engine

[0041] 2 transfer case

[0042] 21 cabinets

[0043] 22 engine interface

[0044] 23 power generation interface

[0045] 24 First hydraulic pump interface

[0046] 25 Second hydraulic pump interface

[0047] 26 Lubricating oil pump

[0048] 3 generators

[0049] 4 hydraulic pumps

[0050] 41 scraper pump

[0051] 42 rammer pump

[0052] 5. Heat dissipation mechanism

[0053] 51 air guide cover

[0054] 52 fans

[0055] 53 intercooler air radiator

[0056] 54 engine coolant radiator

[0057] 55 electric drive coolant radiator

[0058] 56 hydraulic oil radiator

[0059] 57 Fan speed change mechanism DETAILED DESCRIPTION

[0060] The structural principle and working principle of the present invention are described in detail below with reference to the accompanying drawings:

[0061] In the present invention, non-road mobile machinery refers to machinery used on non-roads, which is self-propelled or has dual functions, or is not self-propelled but can be moved from one place to another. Such machinery includes excavators, bulldozers, loaders, rollers, pavers, graders, slotters, pile-driving machinery, forklifts, cranes, loading and unloading machinery, tractors, and asphalt transfer vehicles. All of these can be installed with the hybrid device of the present invention. Since the composition, structure, relative positional relationship, connection relationship, and function of other parts of the non-road mobile machinery are all relatively mature existing technologies, they will not be described in detail here. Only the hybrid device of the present invention will be described in detail below.

[0062] See also Figure 1 and Figure 2 , Figure 1Schematic diagram of the structure of a hybrid device according to an embodiment of the present invention. Figure 2 The figure is a schematic structural diagram of a transfer case 2 according to an embodiment of the present invention. The hybrid device for a non-road mobile machine according to the present invention comprises: a transfer case 2 comprising a case body 21 and an engine interface 22, a first output end, a second output end, and a lubricating oil pump 26 provided on the case body 21; the first output end being provided with a power generation interface 23, and the second output end being provided with a hydraulic pump interface; an engine 1, the output end of the engine 1 being connected to the transfer case 2 via the engine interface 22, and the engine 1 driving a generator 3 through the transfer case 2 to provide sufficient power for the first electrical mechanism of the entire vehicle; a hybrid mechanism comprising a generator 3 and a hydraulic pump 4, preferably arranged in parallel, the generator 3 being connected to the transfer case 2 via the power generation interface 23; and the hydraulic pump 4 being connected to the transfer case 2 via the hydraulic pump interface; wherein the engine 1 drives the generator 3 through the transfer case 2 to generate electricity, and the speeds of the generator 3 and the hydraulic pump 4 are synchronously adjusted by the transfer case 2. The engine 1 can simultaneously drive the generator 3 and the hydraulic pump 4 through the transfer case 2, which not only reduces the number of transmission components and achieves a compact and reasonable overall layout, but also improves the overall transmission efficiency of the hybrid device.

[0063] In this embodiment, the output end of the generator 3 is connected to the first controller, which is used to convert voltage and is preferably a generator controller. The hydraulic pump 4 includes a scraper pump 41 and a rammer pump 42, which are preferably arranged in parallel. A motor is provided at the output end of each of the scraper pump 41 and the rammer pump 42. The hydraulic pump interface includes a first hydraulic pump interface 24 and a second hydraulic pump interface 25. The scraper pump 41 is mounted on the first hydraulic pump interface 24 and connected to the scraper motor; the rammer pump 42 is mounted on the second hydraulic pump interface 25 and connected to the rammer motor. A scraper solenoid valve is provided between the scraper pump 41 and the scraper motor, and a rammer solenoid valve is provided between the rammer pump 42 and the rammer motor. The second controller is connected to the scraper solenoid valve and the rammer solenoid valve, respectively, and adjusts the output torque and speed of the scraper motor and the rammer motor respectively through the scraper solenoid valve and the rammer solenoid valve. The scraper solenoid valve and the rammer solenoid valve are preferably hydraulic solenoid valves.

[0064] This embodiment may also include a second controller, preferably a vehicle-mounted controller, connected to the energy storage system; the first power-consuming mechanism includes a travel control component, an auger control component, a DCAC inverter, and a DCDC converter. The travel control component, the auger control component, the DCAC inverter, and the DCDC converter are preferably arranged in parallel. The DCAC inverter can achieve a high-power output of 80kW, and the distribution box can disperse the electrical energy and simultaneously transmit it to the corresponding first power-consuming mechanism. The travel control component includes left / right travel controllers arranged in parallel, and the auger control component includes left / right auger controllers, which are respectively connected to the second controller. The output ends of the left / right travel controller and the left / right auger controller are both provided with drive motors, which may include travel motors and auger motors respectively connected to the left / right travel controller and the left / right auger controller. The left travel controller is connected to the left travel motor, and the right travel controller is connected to the right travel motor. The left auger controller is connected to the left auger motor, and the right auger controller is connected to the right auger motor. The power distribution box distributes the electrical energy and supplies power to the left / right travel controllers and the left / right auger controllers, respectively, driving the left / right travel motors and the right / right auger motors. A DCAC inverter is connected to a second power-consuming mechanism. The 600V DC power diverted by the distribution box is converted to 200-400V AC power by the DCAC inverter to power the second power-consuming mechanism, which can include a post-ironing heating mechanism, refrigerator, air conditioner, kettle, power tools, pneumatic tools, etc.

[0065] See also Figure 3 , Figure 3This is a schematic diagram of the structure of the heat dissipation mechanism 5 of an embodiment of the present invention. This embodiment also includes a heat dissipation mechanism 5, which can be set in the engine compartment of a non-road mobile machinery, including: an air duct 51; a fan 52, which is set corresponding to the air duct 51, and preferably the axis of rotation of the fan 52 is parallel to or coincides with the center line of the air duct 51, and the fan 52 is a high-power heat dissipation fan, and its power is preferably 10 to 20kW; the rotation percentage of the fan 52 is 0 to 100%; a heat dissipation component, which is set on one side of the air duct 51, and the heat dissipation component includes an intercooler air radiator 53, an engine coolant radiator 54, an electric drive coolant radiator 55 and a hydraulic oil radiator 56 arranged in parallel, and the intercooler air radiator 53 and the engine coolant radiator 54 are connected in parallel. The liquid radiator 54 is connected to the engine 1 respectively; the electric drive coolant radiator 55 is connected to the first power-consuming mechanism and the generator control component, and the generator control component includes a generator controller and a generator 3; the hydraulic oil radiator 56 is connected to the hydraulic pump 4; and the fan speed change mechanism 57 is connected to the fan 52, preferably coaxially arranged with the fan 52; the fan speed change mechanism 57 is connected to the second controller; wherein, the second controller is connected to the heat dissipation component, and controls the fan speed change mechanism 57 to adjust the speed of the fan 52 according to the temperature data of the heat dissipation component. The fan speed change mechanism 57 can be a silicone oil clutch, a hydraulic motor or a fan motor, etc.

[0066] The output end of the electric drive coolant radiator 55 is connected in parallel to a first cooling circuit, a second cooling circuit, and a third cooling circuit. The travel control assembly (travel controller and travel motor) is arranged on the first cooling circuit; the auger control assembly (auger controller and auger motor) is arranged on the second cooling circuit; and the first controller and generator are arranged on the third cooling circuit. The required flow rate and flow resistance of the components in each cooling circuit are consistent, making the coolant flow through each cooling circuit more balanced. Cooling water pumps can also be installed in the first, second, and third cooling circuits, and the first, second, and third cooling circuits are all connected to the expansion tank. That is, the first heat dissipation circuit: electric drive coolant radiator 55 - cooling water pump - left travel controller and left travel motor and right travel controller and right travel motor - electric drive coolant radiator 55; the second heat dissipation circuit: electric drive coolant radiator 55 - cooling water pump - left auger controller and left auger motor and right auger controller and right auger motor - electric drive coolant radiator 55; the third heat dissipation circuit: electric drive coolant radiator 55 - cooling water pump - first controller and generator - electric drive coolant radiator 55.

[0067] In this embodiment, a temperature matrix of the engine intercooler air, engine coolant, hydraulic oil, and electric drive system coolant may be further provided in the second controller. The second controller intelligently adjusts the rotation speed of the fan 52 according to the temperature data of the engine intercooler air, engine coolant, hydraulic oil, and electric drive system coolant, so that the intercooler air radiator 53, the engine coolant radiator 54, the electric drive coolant radiator 55, and the hydraulic oil radiator 56 reach an ideal operating temperature range, thereby extending the service life of the heat dissipation components and saving fuel and reducing noise. At the same time, the thermal management is more reasonable and the structure is simpler, which can meet the heat dissipation requirements of the engine 1, the hydraulic system, and the electric drive system.

[0068] See also Figure 4 , Figure 4 This is a diagram showing the working principle of a hybrid device according to an embodiment of the present invention. In this embodiment, a power distribution box, preferably a high-voltage power distribution box (PDU), may also be included, which is connected to the generator 3 via a first controller. The first controller converts the AC power of the generator 3 into DC power and inputs it into the power distribution box. The output ends of the power distribution box are respectively connected to the energy storage system and the first power consumption mechanism, and the power distribution box distributes the electrical energy to the energy storage system and the first power consumption mechanism as needed. Preferably, the first output end of the power distribution box is connected to the energy storage system, and the second output end is connected to the first power consumption mechanism. The engine 1 can drive the generator to generate electricity through the transfer case 2, and the electrical energy is diverted through the power distribution box, with a portion of the electrical energy being input to the energy storage system and the remaining electrical energy being input to the first power consumption mechanism. When the energy storage system has sufficient power and the generator's power generation is insufficient, the power of the energy storage system and the generator can be simultaneously input to the first power consumption mechanism through the distribution box. Under the joint action of the energy storage system and the generator, the power consumption system of the entire vehicle can be in a stable voltage state to ensure the stability of the input voltage of the first power consumption mechanism; at the same time, the output peak power is greater.

[0069] This embodiment may also include a third controller, preferably an ECU engine controller, connected to the engine 1; a second controller connected to the first and third controllers, respectively. The second controller reads the load demand of the first power consumer and adjusts the engine speed via the third controller and the power generation of the generator via the first controller. In another embodiment, a third controller and a fourth controller may be included. The third controller is preferably an ECU engine controller connected to the engine 1; and a fourth controller is preferably an RCU range extender controller connected to the first, second, and third controllers, respectively. The fourth controller controls the second controller to read the load demand of the first power consumer and adjust the engine speed via the third controller and the power generation of the generator 3 via the first controller. Specifically, the RCU range extender controller reads the load demand of the travel control assembly, auger control assembly, DCAC inverter, and DC-DC converter via the onboard controller. Not only can the engine controller adjust the speed of the engine 1, which in turn synchronizes the speeds of the generator 3 and hydraulic pump 4 via the transfer case 2, but the generator controller can also adjust the power generation of the generator 3 to meet the load demands of the auger control assembly, travel control assembly, DCAC inverter, and DC-DC converter. By adjusting the speed of hydraulic pump 4 to the load demand, it can maintain high-displacement operation for a longer period of time, further improving the transmission efficiency of the hydraulic system. Furthermore, since the speeds of scraper pump 41 and rammer pump 42 fluctuate when the third controller adjusts the speed of engine 1, the second controller can regulate the solenoid valves to ensure that the output torque and speed of the scraper and rammer motors remain stable.

[0070] This embodiment can adopt two starting modes as needed. The first is a starter starting mode. During starting, engine 1 is in a stopped state. The second controller establishes communication with the third controller via the fourth controller and starts engine 1 via the third controller. The second is a generator reverse starting mode. During starting, engine 1 is in a stopped state. The second controller establishes communication with the first controller via the fourth controller and starts generator 3 via the first controller. Generator 3 drags engine 1 to rotate via transfer case 2, thereby starting engine 1. In this generator reverse starting mode, the instantaneous starting power can reach 120kW, significantly improving the starting power of engine 1. This makes it easier to deal with the starting difficulty problem caused by excessive system load in non-road mobile machinery operating in high altitude and low temperature conditions, ensuring that engine 1 can quickly enter the working state. The generator reverse-drag start mode also has the function of automatic start and stop of engine 1. When the non-road mobile machinery is in working condition, turn on the automatic start and stop switch, and the engine 1 will automatically stop if it idles at no load for more than a set time, such as 60 seconds. Turn on any load switch, and the generator reverse-drags the engine to start quickly in 2 seconds, and the working state can be restored instantly, while reducing fuel consumption and noise pollution.

[0071] In this embodiment, the generator 3, the generator controller, the distribution box and the first power-consuming mechanism are connected through a first line, which is a high-voltage circuit; the engine controller, the RCU range extender controller, the generator controller, the travel controller, the auger controller, the DCAC inverter, the DCDC converter and the on-board controller are connected through a second line, which is a low-voltage communication line; the hydraulic pump 4 and each motor are connected through a third line, which is a hydraulic oil circuit.

[0072] During operation, the engine 1 drives the generator to generate electricity through the transfer case 2, and performs voltage conversion through the first controller to convert 380V AC into 600V DC; then the electric energy (i.e. 600V DC) is diverted through the distribution box, part of which is input into the energy storage system for storage and standby, and the other part is input into the first power consumption mechanism through the high-voltage bus for power supply; the fourth controller controls the second controller to read the load demand of the first power consumption mechanism, and adjusts the speed of the engine 1 through the third controller and the power generation of the generator through the first controller, and synchronizes the speed of the generator and the hydraulic pump 4 through the transfer case 2; the solenoid valve is controlled by the second controller to adjust the output torque and speed of the motor.

[0073] The control method of the hybrid device of the present invention can be used to control the above hybrid device, and includes the following steps:

[0074] Step S100: Starting the engine, the engine drives the generator to generate electricity through the transfer case, and the transfer case synchronously adjusts the speed of the generator and the hydraulic pump;

[0075] Step S200: The second controller reads the load demand of the first power-consuming mechanism, and adjusts the speed of the engine through the third controller and the power generation of the generator through the first controller. In this step, the second controller can directly read the load demand of the first power-consuming mechanism, or when the fourth controller is set, the fourth controller can control the second controller to read the load demand of the first power-consuming mechanism; and

[0076] Step S300: Control the solenoid valve through the second controller to adjust the output torque and speed of the motor connected to the hydraulic pump.

[0077] In this embodiment, the following steps may also be included:

[0078] Step S400: The electric energy is diverted through the distribution box, with a portion of the electric energy being input into the energy storage system and the other portion being input into the first power-consuming mechanism.

[0079] In step S100, the engine can be started using two starting methods, a starter starting mode and a generator reverse starting mode, as needed. In the starter starting mode, when starting, the engine 1 is in a stopped state, and the second controller establishes communication with the third controller via the fourth controller, and starts the engine 1 via the third controller. In the generator reverse starting mode, when starting, the engine 1 is in a stopped state, and the second controller establishes communication with the first controller via the fourth controller, and starts the generator 3 via the first controller. The generator 3 drags the engine 1 to rotate via the transfer case 2, thereby starting the engine 1.

[0080] The generator reverse-drag starting mode may also include an automatic start-stop method for the engine 1. When the non-road mobile machinery is in working condition, the automatic start-stop switch is turned on, and the engine 1 automatically stops when idling without load for more than a set time, such as 60 seconds. When any load switch is turned on, the generator reverse-drags the engine to start quickly in 2 seconds, and the working state can be restored instantly, while achieving the purpose of reducing fuel consumption and reducing noise pollution.

[0081] In this embodiment, a thermal management step S500 may also be included, and a temperature matrix of the engine intercooler air, engine coolant, hydraulic oil, and electric drive system coolant is set in the second controller (as shown in the table below). The second controller intelligently adjusts the speed of the fan 52 according to the temperature data of the engine intercooler air, engine coolant, hydraulic oil, and electric drive system coolant, so that the intercooler air radiator 53, the engine coolant radiator 54, the electric drive coolant radiator 55, and the hydraulic oil radiator 56 reach the ideal operating temperature range.

[0082]

[0083]

[0084] The system may also include a temperature alarm step S600. When the temperature of the engine intercooler air reaches a first set temperature, such as 120°C, the intercooler air radiator 53 generates an alarm. When the temperature of the engine coolant reaches a second set temperature, such as 105°C, the engine coolant radiator 54 generates an alarm. When the temperature of the hydraulic oil reaches a third set temperature, such as 85°C, the hydraulic oil radiator 56 generates an alarm. When the temperature of the electric drive coolant reaches a fourth set temperature, such as 85°C, the electric drive coolant radiator 55 generates an alarm. An engine coolant temperature alarm, an intercooler air temperature alarm, an electric drive coolant temperature alarm, and a hydraulic oil temperature alarm are installed on the corresponding heat dissipation circuits, respectively, and are connected to the vehicle controller to implement the above-mentioned alarm functions.

[0085] The engine 1 of the present invention can simultaneously drive the generator 3 and hydraulic pump 4 through the transfer case 2, reducing transmission components and achieving a compact and rational overall layout while also improving the overall transmission efficiency of the power transmission system. The engine 1 can synchronously adjust the speed of the generator 3 and hydraulic pump 4 through the transfer case 2, allowing the generator and hydraulic pump 4 to operate in their high-efficiency range for longer periods of time, further enhancing the overall power transmission efficiency of the hybrid system. The heat dissipation mechanism 5 integrates the thermal management system, reducing thermal management components and optimizing the cooling air flow, resulting in a simpler overall layout. The hybrid system's starting efficiency is enhanced by the two starting modes of the engine 1: starter start and generator reverse start. Generator reverse start can more easily address starting difficulties caused by excessive system load in non-road mobile machinery operating in high altitude and low temperature conditions, ensuring that the engine 1 can quickly enter the operating state. Furthermore, combined with automatic start-stop technology, the hybrid system's fuel consumption and noise level are reduced, improving the equipment's economical use and driver comfort.

[0086] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A hybrid device for non-road mobile machinery, characterized in that: include: The transfer case includes a case body and an engine interface, a first output end, and a second output end provided on the case body; the first output end is provided with a power generation interface, and the second output end is provided with a hydraulic pump interface; an engine connected to the transfer case via the engine interface; The hybrid mechanism includes a generator and a hydraulic pump, wherein the generator is connected to the transfer case via the power generation interface; the hydraulic pump is connected to the transfer case via the hydraulic pump interface; The engine drives the generator to generate electricity through the transfer case, and the transfer case synchronously adjusts the rotational speeds of the generator and the hydraulic pump.

2. The hybrid device for non-road mobile machinery according to claim 1, characterized in that: Also includes: a power distribution box connected to the generator via a first controller, wherein the first controller converts the alternating current of the generator into direct current and inputs the direct current into the power distribution box; The power distribution box is connected to the energy storage system and the first power consumption mechanism respectively, and distributes electric energy to the energy storage system and the first power consumption mechanism as needed.

3. The hybrid device for non-road mobile machinery according to claim 2, characterized in that: Also includes: The second controller is connected to the energy storage system; the first power-consuming mechanism includes a travel controller, an auger controller, a DCAC inverter and a DCDC converter, which are respectively connected to the second controller.

4. The hybrid device for non-road mobile machinery according to claim 3, characterized in that: Also includes: The third controller is connected to the engine; the second controller is connected to the first controller and the third controller respectively, the second controller reads the load demand of the first power-consuming mechanism, and adjusts the speed of the engine through the third controller and the power generation of the generator through the first controller.

5. The hybrid device for non-road mobile machinery according to claim 3, characterized in that: Also includes: a third controller connected to the engine; as well as The fourth controller is connected to the first controller, the second controller and the third controller respectively. The fourth controller controls the second controller to read the load demand of the first power-consuming mechanism, and adjusts the speed of the engine through the third controller and the power generation of the generator through the first controller.

6. The hybrid device for non-road mobile machinery according to claim 4 or 5, characterized in that: The second controller establishes communication with the third controller and starts the engine through the third controller; or the second controller establishes communication with the first controller and starts the generator through the first controller, and the generator starts the engine through the transfer case.

7. The hybrid device for non-road mobile machinery according to claim 6, characterized in that: Also included is a heat dissipation mechanism, further comprising: Air guide hood; A fan is provided corresponding to the air guide cover; a heat dissipation component, disposed on one side of the air scoop, comprising an intercooler air radiator, an engine coolant radiator, an electric drive coolant radiator, and a hydraulic oil radiator, which are arranged in parallel; the intercooler air radiator and the engine coolant radiator are respectively connected to the engine; the electric drive coolant radiator is connected to the first power-consuming mechanism and the generator control assembly; and the hydraulic oil radiator is connected to the hydraulic pump; and A fan speed changing mechanism is connected to the fan; the fan speed changing mechanism is connected to the second controller; the second controller is connected to the heat dissipation component and controls the fan speed changing mechanism to adjust the fan speed according to the temperature data of the heat dissipation component.

8. The hybrid device for non-road mobile machinery according to claim 7, characterized in that: The output end of the electric drive coolant radiator is provided with a first heat dissipation circuit, a second heat dissipation circuit and a third heat dissipation circuit in parallel; the travel controller and the travel motor are arranged on the first heat dissipation circuit; the auger controller and the auger motor are arranged on the second heat dissipation circuit; the first controller and the generator are arranged on the third heat dissipation circuit.

9. A non-road mobile machine, characterized in that: The hybrid device comprises the hybrid device according to any one of claims 1 to 8.

10. A method for controlling a hybrid device according to any one of claims 1 to 8, comprising the following steps: S100, starting the engine, the engine driving the generator to generate electricity through the transfer case, and the transfer case synchronously adjusting the speed of the generator and the hydraulic pump; S200, the second controller reads the load demand of the first power-consuming mechanism, and adjusts the speed of the engine through the third controller and the power generation of the generator through the first controller; and S300 , controlling the solenoid valve through the second controller to adjust the output torque and speed of the motor connected to the hydraulic pump.

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