Thermal management system of hybrid power equipment and hybrid power equipment

Abstract

The invention provides a thermal management system of hybrid power equipment and the hybrid power equipment. The thermal management system is used for solving the problems of how to reduce the energy consumption and cost of the hybrid power equipment and how to improve the reliability of the hybrid power equipment. A first cooling circulation loop of the thermal management system comprises a first radiator, a first mechanical pump and a first generator of a first range extender which are sequentially connected in series; the first mechanical pump comprises a first end and a second end, the first radiator comprises a third end and a fourth end, and the third end is communicated with the second end. A portion of the second cooling circulation loop includes a second generator of a second range extender. Two ends of one part of the second cooling circulation loop are respectively communicated with the first end and the fourth end; or the other part of the second cooling circulation loop comprises a second radiator and a second mechanical pump, and the second radiator, the second mechanical pump and the second generator are sequentially connected in series. The thermal management system provided by the invention is beneficial to improving the reliability of the hybrid power equipment.

Description

Technical Field

[0001] The present application relates to the technical field of new energy equipment, and particularly to a thermal management system for a hybrid device and a hybrid device. Background Art

[0002] With the continuous development of new energy technologies, new energy equipment is becoming increasingly popular among users. For example, the market share of new energy vehicles is increasing, mainly pure electric vehicles. However, for equipment with high requirements for load capacity, endurance, and cost, such as medium-sized truck logistics vehicles, to meet the endurance requirement, more batteries with higher power are needed, resulting in higher costs and weights. Usually, a large-displacement and high-power range extender needs to be equipped to meet the power demand. However, such a configuration has problems such as high energy consumption, high equipment cost, and difficulty in ensuring the cooling effect of the thermal management system. In addition, when the range extender fails, the equipment will break down, affecting the operation efficiency. Summary of the Invention

[0003] Embodiments of the present application provide a thermal management system for a hybrid device and a hybrid device, which are used to solve the problems of how to reduce the energy consumption and cost of the hybrid device and how to improve the reliability of the hybrid device.

[0004] To achieve the above object, the embodiments of the present application adopt the following technical solutions:

[0005] In a first aspect, an embodiment of the present application provides a thermal management system for a hybrid device. The thermal management system includes a first cooling circulation loop and a second cooling circulation loop. The first cooling circulation loop includes a first radiator, a first mechanical pump, and a first generator of a first range extender connected in series in sequence. The first mechanical pump includes a first end and a second end, and the first radiator includes a third end and a fourth end, and the third end is connected to the second end. A part of the second cooling circulation loop includes a second generator of a second range extender. Wherein, both ends of a part of the second cooling circulation loop are respectively connected to the first end and the fourth end to reuse the first radiator and the first mechanical pump for another part of the second cooling circulation loop; or, another part of the second cooling circulation loop includes a second radiator and a second mechanical pump, and the second radiator, the second mechanical pump, and the second generator are connected in series in sequence.

[0006] In some possible implementation manners of the first aspect, the second cooling circulation loop further includes a drive motor, and the drive motor is connected in series between the first radiator and the second generator and is located downstream of the second generator.

[0007] In some possible implementations of the first aspect, the first cooling circulation loop further includes a controller group, which is connected in series between the first mechanical pump and the first generator and is located upstream of the first generator. The controller group includes a motor controller and / or a range extender controller. The motor controller is electrically connected to the drive motor, and the range extender controller is electrically connected to both the first range extender and the second range extender.

[0008] In some possible implementations of the first aspect, the first cooling circulation loop further includes a steering pump, which is connected in series between the controller group and the first radiator and is located downstream of the controller group. The steering pump is used as the power source for the hydraulic power steering system of the hybrid device.

[0009] In some possible implementations of the first aspect, the first cooling circulation loop further includes an air compressor, which is connected in series between the controller group and the first radiator and is located downstream of the controller group. The air compressor is used as the power source for the pneumatic braking system of the hybrid device.

[0010] In some possible implementations of the first aspect, the controller group further includes a steering pump controller, which is electrically connected to the steering pump; and / or, the controller group further includes an air compressor controller, which is electrically connected to the air compressor.

[0011] In some possible implementations of the first aspect, the thermal management system further includes a third cooling circulation loop and a first air-conditioning refrigeration loop. The third cooling circulation loop includes a first heat exchange part, a third mechanical pump, a first heater, and a battery connected in series in sequence. The first air-conditioning refrigeration loop includes an air-conditioning compressor, a second heat exchange part, and an outdoor heat exchanger connected in series in sequence. The second heat exchange part is thermally connected to the first heat exchange part so that the refrigerant flowing through the second heat exchange part absorbs the heat from the coolant in the first heat exchange part.

[0012] In some possible implementations of the first aspect, the thermal management system further includes a first cooling fan, which is connected to both the first radiator and the outdoor heat exchanger. The first cooling fan is used to drive the air flow to cool the coolant flowing through the first radiator and the refrigerant flowing through the outdoor heat exchanger.

[0013] In a second aspect, an embodiment of the present application provides a hybrid device, which includes the thermal management system according to any of the above implementations.

[0014] In a third aspect, an embodiment of the present application provides a hybrid device, which includes two range extenders and a range extender controller. The two range extenders include a first range extender and a second range extender. The range extender controller is electrically connected to both the first range extender and the second range extender. The range extender controller is configured to: if the required power generation power P of the hybrid device reqis less than or equal to the first threshold, then control the actual power generation P of the first range extender act1 and P req match; if P req is greater than the first threshold and less than or equal to the second threshold, then control the actual power generation P of the first range extender act1 to match the first threshold, and control the actual power generation P of the second range extender act2 to match the difference between P req and the first threshold. Among them, the first threshold is less than the maximum power generation P of the range extender max , the second threshold is greater than the maximum power generation P of the range extender max , and less than the sum of the maximum power generations of the two range extenders.

[0015] In some possible implementation manners of the third aspect, the range extender controller is further configured to: if P req is greater than the second threshold, then control the actual power generation P of the second range extender act2 to match the maximum power generation P of the range extender max , and control the actual power generation P of the first range extender act1 to match the difference between P req and the maximum power generation P of the range extender max .

[0016] In some possible implementation manners of the third aspect, the range extender controller is further configured to: if the cumulative power generation of the first range extender among the two range extenders is less than the cumulative power generation of the second range extender, then use the first range extender as the first range extender.

[0017] The thermal management system of the hybrid device and the hybrid device provided by this application have the following beneficial effects:

[0018] For the thermal management system of the hybrid device provided by this application, by making the first cooling cycle loop include a first radiator, a first mechanical pump, and a first generator connected in series in sequence, the first mechanical pump can drive the coolant in the first cooling cycle loop to cool the first generator, so as to ensure the efficient operation of the first generator; by making a part of the second cooling cycle loop include a second generator and reusing the first radiator and the first mechanical pump for another part of the second cooling cycle loop, the first mechanical pump can drive the coolant in the second cooling cycle loop to cool and lower the temperature of the second generator, so as to ensure the reliability of the second generator. At the same time, it can also reduce the cost of the thermal management system, and further reduce the overall cost of the device.

[0019] Based on this, by connecting a partial first cooling circulation loop including a first generator and a partial second cooling circulation loop including a second generator in parallel between a first end and a fourth end, the flow paths of the first cooling circulation loop and the second cooling circulation loop are shorter, the water resistance in the cooling loop is smaller, and the cooling effect on the two generators is better. When the two generators are connected in series in the same cooling circulation loop, it can prevent the temperature of the coolant from being too high when flowing through the second generator, so that the cooling effect on the second generator cannot be achieved, thus improving the reliability of the hybrid device.

[0020] For the hybrid device provided in this application, compared with configuring one range extender, by configuring two range extenders, the displacement and power of a single range extender can be made smaller. Therefore, when the total power generation is the same, the total weight of the two range extenders is lighter, which is beneficial to the lightweight of the hybrid device. In addition, the performance requirements for the related components of the small-power range extender are lower, and the manufacturing process is more mature. Therefore, the manufacturing, maintenance, and replacement costs are all lower, which is beneficial to reducing the purchase cost of users; at the same time, the small-power range extender has a smaller volume and is convenient to arrange in a limited space. In addition, it is convenient to adjust the power output of the two range extenders according to the actual load demand. For example, under low-load conditions, only one range extender needs to be operated to prevent low efficiency and high energy consumption under low load; under high-load conditions, two range extenders can be operated simultaneously to meet the power demand. Finally, when one of the two range extenders fails, the other can continue to operate to ensure that the hybrid device does not break down, thereby improving the reliability of the hybrid device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a side view of the hybrid device provided in some embodiments of this application;

[0022] Figure 2 is Figure 1 a side view of a partial structure of the hybrid device shown;

[0023] Figure 3 is Figure 2 a top view of the hybrid device shown;

[0024] Figure 4 is Figure 3 a schematic diagram of a partial structure of the hybrid device shown;

[0025] Figure 5 is Figure 3 a schematic diagram of a partial structure of the hybrid device shown;

[0026] Figure 6 is Figure 5 a schematic diagram of a partial structure of the hybrid device shown as viewed from another perspective;

[0027] Figure 7 is Figure 3 a schematic diagram of a partial structure of the hybrid device shown;

[0028] Figure 8 is Figure 3 a schematic diagram of a partial structure of the hybrid device shown;

[0029] Figure 9 is Figure 3 a schematic diagram of a partial structure of the hybrid device shown;

[0030] Figure 10 is Figure 3 a partial schematic diagram of the thermal management system of the hybrid device shown;

[0031] Figure 11 is Figure 3 a partial structural diagram of the thermal management system of the hybrid device shown;

[0032] Figure 12 is Figure 3 a schematic diagram of the air conditioning system of the hybrid device shown;

[0033] Figure 13 is Figure 3 a partial schematic diagram of the thermal management system of the hybrid device shown.

[0034] Reference numerals:

[0035] Hybrid device 1000; Front end A; Rear end B;

[0036] Frame 100; First longitudinal beam 110; Second longitudinal beam 120; Cross beam 130;

[0037] Cab 200;

[0038] First range extender 300; First engine 310; First generator 320;

[0039] Second range extender 400; Second engine 410; Second generator 420;

[0040] Intake system 500; Air filter 510; Expansion chamber 520; First intercooler 531; Second intercooler 532; First pipeline structure 540; First pipe section 541; Second pipe section 542; Third pipe section 543;

[0041] Exhaust system 600; First catalytic converter assembly 610; Second catalytic converter assembly 620; Second pipeline structure 630; First exhaust pipe section 631; Second exhaust pipe section 632; Third exhaust pipe section 633; Muffler 640;

[0042] Fuel supply system 700; fuel tank 710; filter 720; carbon canister 730; fourth pipeline structure 740; first fuel supply pipe section 741; second fuel supply pipe section 742; third fuel supply pipe section 743; fourth fuel supply pipe section 744; return air pipe section 745; gas collecting pipe section 746; fifth fuel supply pipe section 747; sixth fuel supply pipe section 748; seventh fuel supply pipe section 749;

[0043] Electrical system 800; battery 810; power management system 820; drive motor 830; controller group 840; air-conditioning compressor 851; indoor unit 852; steering pump 861; steering oil pot 862; steering gear 863; air compressor 871;

[0044] Thermal management system A100; first cooling circulation loop A10; second cooling circulation loop A20; first radiator A11; third end A11a; fourth end A11b; first mechanical pump A12; first end A12a; second end A12b; third cooling circulation loop A30; first heat exchange part A31; third mechanical pump A32; first heater A33; second expansion tank A34; first air-conditioning refrigeration loop A40; second heat exchange part A41; outdoor heat exchanger A42; first cooling fan A50; first expansion tank A60; fourth cooling circulation loop A70; third radiator A71; fifth cooling circulation loop A80; fourth radiator A81; second cooling fan A90; third expansion tank A91. Specific embodiments

[0045] In the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0046] In the embodiments of the present application, it should be understood that the directional terms mentioned, such as "up", "down", "left", "right", "inside", "outside", etc., are only references to the directions of the attached drawings. Therefore, the directional terms used are for better and clearer description and understanding of the embodiments of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the embodiments of the present application.

[0047] In the embodiments of the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0048] In the embodiments of the present application, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of additional identical elements in the process, method, article or device comprising such element.

[0049] In the embodiments of the present application, "and / or" is merely a correlative relationship describing associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this text generally indicates that the associated objects before and after are in an "or" relationship.

[0050] In the embodiments of the present application, it should be noted that the descriptions "vertical" and "parallel" respectively represent approximate verticality and approximate parallelism within a certain allowable error range. The error range may be a range where the deviation angle is less than or equal to 5°, 8° or 10° relative to absolute verticality and absolute parallelism, and specific limitations are not provided here.

[0051] With the continuous development of new energy technologies, new energy devices are becoming increasingly popular among users. For example, the market share of new energy vehicles is increasing, mainly pure electric. However, for devices with high requirements for load capacity, endurance, and cost, such as medium-sized truck logistics vehicles, to meet the endurance requirement, more power batteries need to be equipped, resulting in high costs and weights. In related technologies, usually a large-displacement and high-power range extender needs to be equipped to meet the power demand. Such a configuration has problems such as high energy consumption, high equipment cost, and difficulty in ensuring the cooling effect of the thermal management system. In addition, when the range extender fails, the device will break down and affect the operation efficiency.

[0052] To solve this problem, the present application provides a thermal management system for a hybrid device and a hybrid device. By configuring two range extenders in the hybrid device, compared with configuring one range extender, at the same power generation, the energy consumption is lower and the cost is lower. When one range extender fails, the device can operate normally, with good reliability. In addition, by paralleling the cooling sections for cooling the generators of the two range extenders, it can ensure that the cooling effects of the generators of the two range extenders are both good, further improving the reliability of the hybrid device.

[0053] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application.

[0054] Please refer toFigures 1 - 3 , Figure 1 A side view of a hybrid device 1000 provided for some embodiments of the present application, Figure 2 is Figure 1 a side view of a partial structure of the hybrid device 1000 shown, Figure 3 is Figure 2 a top view of the hybrid device 1000 shown. Figures 1 - 3 In the illustrated embodiment, the hybrid device 1000 is taken as an example of a medium-duty truck for exemplary illustration, which cannot be regarded as a special limitation on the present application. In some other embodiments, the hybrid device 1000 may also be a car, a bus, a fire truck, a police car, an engineering vehicle, a ship, a machining device, etc.

[0055] Please continue to refer to Figures 1 - 3 , the hybrid device 1000 includes a frame 100, a cab 200 and two range extenders.

[0056] The frame 100 is the structural skeleton of the hybrid device 1000. The frame 100 includes a first longitudinal beam 110, a second longitudinal beam 120 and a plurality of cross beams 130. The first longitudinal beam 110 and the second longitudinal beam 120 extend from the front end A to the rear end B of the hybrid device 1000, and the plurality of cross beams 130 are substantially perpendicular to the arrangement direction of the front end A and the rear end B, and are arranged at intervals along the arrangement direction of the front end A and the rear end B. Among them, the first longitudinal beam 110 may be the left longitudinal beam of the hybrid device 1000, and the second longitudinal beam 120 may be the right longitudinal beam of the hybrid device 1000.

[0057] The cab 200 is fixed to the frame 100 and is located on the side of the frame 100 facing away from the ground. Specifically, the cab 200 may be fixed to the frame 100 by means of a semi-floating suspension or a full-floating suspension.

[0058] Please refer to Figure 3 and Figure 4 , Figure 4 is Figure 3 a schematic diagram of a partial structure of the hybrid device 1000 shown. The two range extenders include a first range extender 300 and a second range extender 400. The first range extender 300 and the second range extender 400 are fixed to the frame 100 and are located between the first longitudinal beam 110 and the second longitudinal beam 120. The first range extender 300 and the second range extender 400 are located on the side of the cab 200 facing the ground. In this way, the overall structure of the hybrid device 1000 is relatively compact, the two range extenders do not occupy the space on the hybrid device 1000 for arranging equipment or goods, and the cab 200 can provide protection for the two range extenders, which is convenient for daily maintenance and servicing.

[0059] Specifically, the first range extender 300 and the second range extender 400 can be fixed to the vehicle frame 100 in a three-point suspension manner. Figure 3 and Figure 4 In the illustrated embodiment, the first range extender 300 and the second range extender 400 are arranged along the arrangement direction of the vehicle head A and the vehicle tail B. In some other embodiments, the first range extender 300 and the second range extender 400 may not all be located between the first longitudinal beam 110 and the second longitudinal beam 120, and the first range extender 300 and the second range extender 400 may also be arranged in other directions.

[0060] The first range extender 300 includes a first engine 310, a first generator 320, and a first generator controller (not shown in the figure). The first engine 310 and the first generator 320 are in transmission connection. The first generator controller (not shown in the figure) is integrated into the first generator 320 and is electrically connected to the first generator 320. The second range extender 400 includes a second engine 410, a second generator 420, and a second generator controller (not shown in the figure). The second engine 410 and the second generator 420 are in transmission connection. The second generator controller (not shown in the figure) is integrated into the second generator 420 and is electrically connected to the second generator 420.

[0061] Please refer to Figure 5 and Figure 6 , Figure 5 is Figure 3 a schematic diagram of a partial structure of the hybrid device 1000 shown, Figure 6 is Figure 5 a schematic diagram of the partial structure of the hybrid device 1000 shown from another perspective. The hybrid device 1000 further includes an intake system 500. The intake system 500 includes an air filter 510, an expansion chamber 520, a first intercooler 531, a second intercooler 532, and a first pipeline structure 540. The air filter 510 can be located on the right side of the vehicle frame 100, and the expansion chamber 520 can be fixed to the vehicle frame 100 through a mounting bracket. Among them, the first pipeline structure 540 includes a first pipe segment 541, a plurality of second pipe segments 542, and a plurality of third pipe segments 543.

[0062] The first pipe segment 541 is connected between the air outlet of the air filter 510 and the air inlet of the expansion chamber 520; between one air outlet of the expansion chamber 520 and the air inlet of the supercharger of the first engine 310, between the air outlet of the supercharger of the first engine 310 and the air inlet of the first intercooler 531, and between the air outlet of the first intercooler 531 and the air inlet of the first engine 310, a second pipe segment 542 is respectively connected; between the other air outlet of the expansion chamber 520 and the air inlet of the supercharger of the second engine 410, between the air outlet of the supercharger of the second engine 410 and the air inlet of the second intercooler 532, and between the air outlet of the second intercooler 532 and the air inlet of the second engine 410, a third pipe segment 543 is respectively connected.

[0063] In this way, the air enters the expansion chamber 520 after being filtered by the air filter 510. After the air flow rate and intake resistance are reduced and the intake pressure is stabilized in the expansion chamber 520, a part of the air can enter the supercharger of the first engine 310, be compressed by the supercharger and enter the first intercooler 531, and after being cooled by the first intercooler 531, enter the cylinder of the first engine 310; similarly, another part of the air can enter the supercharger of the second engine 410, be compressed by the supercharger and enter the second intercooler 532, and after being cooled by the second intercooler 532, enter the cylinder of the second engine 410.

[0064] Please refer to Figure 7 , Figure 7 For Figure 3 a schematic diagram of a partial structure of the hybrid device 1000 shown. The hybrid device 1000 further includes an exhaust system 600. The exhaust system 600 includes a first catalytic converter assembly 610, a second catalytic converter assembly 620, a second pipeline structure 630, and a muffler 640. Among them, the second pipeline structure 630 includes a first exhaust pipe segment 631, a second exhaust pipe segment 632, and a third exhaust pipe segment 633. The first catalytic converter assembly 610 can be integrally fixed to the first engine 310 of the first range extender 300, and the air inlet of the first catalytic converter assembly 610 is communicated with the exhaust outlet of the first engine 310. The first exhaust pipe segment 631 is connected between the air outlet of the first catalytic converter assembly 610 and the air inlet of the third exhaust pipe segment 633; the second catalytic converter assembly 620 can be integrally fixed to the second engine 410 of the second range extender 400, and the air inlet of the second catalytic converter assembly 620 is communicated with the exhaust outlet of the second engine 410. The second exhaust pipe segment 632 is connected between the air outlet of the second catalytic converter assembly 620 and the air inlet of the third exhaust pipe segment 633; the air outlet of the third exhaust pipe segment 633 is connected to the air inlet of the muffler 640.

[0065] In this way, the combustion exhaust gases of the first engine 310 and the second engine 410 can be converted into harmless substances by the first catalytic converter assembly 610 and the second catalytic converter assembly 620 respectively, and then pass through the muffler 640. After reducing the noise through physical barrier and acoustic wave interference, the exhaust gases are discharged outside the hybrid power device 1000. The combustion exhaust gases of the two engines are discharged after passing through the same muffler 640, making the overall structure of the exhaust system 600 more compact.

[0066] Please refer to Figure 3 and Figure 8 , Figure 8 which is Figure 3 a partial structural schematic diagram of the hybrid power device 1000 shown. The hybrid power device 1000 further includes a fuel supply system 700, and the fuel supply system 700 can supply oil to the range extender. Specifically, the oil can be methanol, which is an ideal new type of clean and renewable energy. It has the characteristics of high combustion efficiency, clean emissions, and low price, and is comparable to pure electricity in terms of economy, enabling the hybrid power device 1000 to have better economy. The fuel supply system 700 includes a fuel tank 710, a filter 720, a carbon canister 730, and a fourth pipeline structure 740. The fuel tank 710 can be fixed to the vehicle frame 100 and is located on the left side of the vehicle frame 100. Among them, the fourth pipeline structure 740 includes a first fuel supply pipe section 741, a second fuel supply pipe section 742, a third fuel supply pipe section 743, a fourth fuel supply pipe section 744, a return air pipe section 745, a gas collecting pipe section 746, a fifth fuel supply pipe section 747, a sixth fuel supply pipe section 748, and a seventh fuel supply pipe section 749.

[0067] The first fuel supply pipe section 741 is connected between the fuel tank 710 and the inlet of the filter 720, and one end of the second fuel supply pipe section 742 is communicated with the outlet of the filter 720; the third fuel supply pipe section 743 is connected between the other end of the second fuel supply pipe section 742 and the first engine 310, and the fourth fuel supply pipe section 744 is connected between the other end of the second fuel supply pipe section 742 and the second engine 410. Specifically, the third fuel supply pipe section 743 and the fourth fuel supply pipe section 744 can be connected to the second fuel supply pipe section 742 through a tee joint. The return air pipe section 745 is connected between the outlet of the filter 720 and the fuel tank 710.

[0068] The gas collecting pipe section 746 is connected between the fuel tank 710 and the inlet of the carbon canister 730; one end of the fifth fuel supply pipe section 747 is connected to the outlet of the carbon canister 730, and the sixth fuel supply pipe section 748 is connected between the other end of the fifth fuel supply pipe section 747 and the second pipe section 542 upstream of the first engine 310; the seventh fuel supply pipe section 749 is connected between the other end of the fifth fuel supply pipe section 747 and the third pipe section 543 upstream of the second engine 410. Specifically, the sixth fuel supply pipe section 748 and the seventh fuel supply pipe section 749 can be connected to the fifth fuel supply pipe section 747 through a tee joint.

[0069] In this way, the oil from the fuel tank 710 can be supplied to the first engine 310 and the second engine 410 respectively after being filtered for impurities by the filter 720. During this process, the air and / or oil vapor mixed in the oil can flow back to the fuel tank 710 through the return air pipe section 745; the oil vapor from the fuel tank 710 can be absorbed by the carbon canister 730. When the first engine 310 and / or the second engine 410 is started, the oil vapor in the carbon canister 730 can enter the intake system 500 and enter the corresponding engine to improve the utilization rate of the fuel.

[0070] Please also read Figure 3 and Figure 9 , Figure 9 for Figure 3 The hybrid device 1000 is a partial structural schematic diagram. The hybrid device 1000 also includes an electrical system 800. The electrical system 800 includes a battery 810, a power management system 820, a drive motor 830, a controller group 840, an air conditioning compressor 851 of the air conditioning system and an electric heater of the indoor unit 852 (not shown in the figure), a steering pump 861 of the steering system, and an air compressor 871 of the brake system. The battery 810 stores electrical energy to provide electrical energy for other electrical components. The number of batteries 810 is two, and they are fixed to the second longitudinal beam 120 of the frame 100 through a box frame. In some other embodiments, the number of batteries 810 can also be one. The power management system 820 is electrically connected to the battery 810 to monitor the state of the battery 810, perform balancing management, thermal management and energy management on the battery 810, perform safety protection on the battery 810, and communicate and exchange information with other components.

[0071] The drive motor 830 is integrated and fixed to a vehicle axle and is in transmission connection with the vehicle axle to convert electrical energy into mechanical energy to drive the hybrid device 1000 to travel. Specifically, the drive motor 830 can be integrated and fixed to the rear axle. In some other embodiments, the drive motor 830 can also be fixed to the vehicle frame 100 and in transmission connection with the vehicle axle through a transmission device. In some other embodiments, the drive motor 830 can also be integrated and fixed to other vehicle axles.

[0072] Based on this, the controller group 840 is fixed to the vehicle frame 100 and is located in the middle in the front-rear direction of the hybrid power device 1000. The controller group 840 includes a motor controller (not shown in the figure), and the motor controller is electrically connected to the power management system 820 and electrically connected to the drive motor 830. In this way, the motor controller can interact with the power management system 820 for information, and convert the direct current from the battery 810 into alternating current to supply the drive motor 830. In addition, the motor controller can also adjust the output voltage and current, control the speed and torque of the drive motor 830, and monitor the state and diagnose faults of the drive motor 830 to ensure the accurate drive of the drive motor 830 to the axle, and further ensure the reliability of the operation of the hybrid power device 1000.

[0073] The air-conditioning compressor 851 of the air-conditioning system 850 can be integrally fixed to the first engine 310 of the first range extender 300. Based on this, the controller group 840 further includes an air-conditioning compressor controller (not shown in the figure) and a second electric heating controller (not shown in the figure). The air-conditioning compressor controller is electrically connected to the air-conditioning compressor 851 to control and protect the air-conditioning compressor 851. The second electric heating controller is electrically connected to the electric heater of the indoor unit 852 integrated in the cab 200 to control and protect the electric heater.

[0074] The steering pump 861 is fixed to a cross beam 130 of the vehicle frame 100 and is located between the first range extender 300 and the controller group 840. On this basis, the steering system further includes a steering oil pot 862 and a steering gear 863. The steering pump 861, the steering oil pot 862 and the steering gear 863 can be connected in series through hydraulic pipelines to form a hydraulic circulation circuit to assist the hybrid power device 1000 in steering. The steering oil pot 862 can be fixed to the vehicle frame 100 through a mounting bracket and is located below the cab 200. Specifically, the steering oil pot 862 can be integrally fixed to the same mounting bracket as the aforementioned carbon canister 730. Based on this, the controller group 840 further includes a steering pump controller (not shown in the figure), and the steering pump controller is electrically connected to the steering pump 861 to control the output pressure and speed of the steering pump 861.

[0075] The air compressor 871 can be fixed to a cross beam 130 of the vehicle frame 100 and is located between the first range extender 300 and the controller group 840. The air compressor 871 is used as the power source for the air pressure braking system. Specifically, the air compressor 871 can be integrally arranged with the steering pump 861 to save installation space. Based on this, the controller group 840 further includes an air compressor controller (not shown in the figure), and the air compressor controller is electrically connected to the air compressor 871 to monitor the parameters of the air compressor 871 in real time and adjust the operating state of the air compressor 871.

[0076] On this basis, the controller group 840 further includes a range extender controller (not shown in the figure), and the range extender controller is electrically connected to both the first range extender 300 and the second range extender 400 to control the start and stop of the first range extender 300 and the second range extender 400, as well as the output power, etc. In some examples, the number of range extender controllers can be one, which is electrically connected to both the first range extender 300 and the second range extender 400 at the same time. In other examples, the number of range extender controllers can also be two, which are respectively electrically connected to the first range extender 300 and the second range extender 400. Specifically, all the controllers included in the controller group 840 can be integrated and fixed to the vehicle frame 100 to save installation space, facilitate the laying of signal transmission lines, and facilitate cooling. In some other embodiments, all the controllers included in the controller group 840 can also be separately arranged and fixed to the vehicle frame 100.

[0077] On this basis, the controller group 840 can be electrically connected to the main controller of the hybrid device 1000 to receive signals from the main controller and send signals to the main controller.

[0078] In some embodiments, the range extender controller is configured to: if the required power generation power P of the hybrid device 1000 req is less than or equal to the first threshold, then control the actual power generation power P of the first range extender 300 act1 to match P req ; if P req is greater than the first threshold and less than or equal to the second threshold, then control the actual power generation power P of the first range extender 300 act1 to match the first threshold, and control the actual power generation power P of the second range extender 400 act2 to match the difference between P req and the first threshold;

[0079] wherein, the first threshold is less than the maximum power generation power P of the range extender max , the second threshold is greater than the maximum power generation power P of the range extender max , and less than the sum of the maximum power generation powers of the two range extenders. Exemplarily, the first threshold can be 3 / 5 of the maximum power generation power P of the range extender max , and the second threshold can be 8 / 5 of the maximum power generation power P of the range extender max .

[0080] In this way, both range extenders can operate in the speed range with the best economy as much as possible, and the two range extenders can also have good NVH performance. The NVH performance refers to the comprehensive performance of the noise (Noise), vibration (Vibration) generated by the range extender during operation, and the discomfort (Harshness) brought to the driver and passengers by these factors.

[0081] On this basis, the range extender controller is further configured to: if P req is greater than a second threshold value, then control the actual power generation P of the second range extender 400 act2 to match the maximum power generation of the range extender P max , and control the actual power generation P of the first range extender 300 act1 to match P req and the difference between the maximum power generation of the range extender P max .

[0082] In this way, the total power generation of the first range extender 300 started first and the total power generation of the second range extender 400 started later can be made as close as possible, so as to facilitate the maintenance of the two range extenders at the same time. In addition, the overall control strategy of the first range extender 300 and the second range extender 400 can be simplified.

[0083] On this basis, the range extender controller is further configured to: if the cumulative power generation of the first range extender among the two range extenders is less than the cumulative power generation of the second range extender, then make the first range extender be the first range extender.

[0084] In this way, the total power generation of the first range extender 300 and the total power generation of the second range extender 400 are further made as close as possible, so as to facilitate the maintenance of the two range extenders at the same time.

[0085] In some other embodiments, when the required power generation P of the hybrid device 1000 req is greater than zero, the actual power generation P of the two range extenders act is always a fixed value. In some other embodiments, when the required power generation P of the hybrid device 1000 req is greater than zero, according to the required power generation P req , the actual power generation P of the two range extenders is adjusted simultaneously act and made to be the same power value.

[0086] Based on the above, please refer to Figure 10 , Figure 10 for Figure 3Partial schematic diagram of the thermal management system A100 of the hybrid device 1000 shown. The hybrid device 1000 further includes a thermal management system A100. The thermal management system A100 includes a first cooling circuit A10 and a second cooling circuit A20. The first cooling circuit A10 includes a first radiator A11, a first mechanical pump A12, and a first generator 320 of the first range extender 300 connected in series in sequence. Among them, the first mechanical pump A12 includes a first end A12a and a second end A12b, and the first radiator A11 includes a third end A11a and a fourth end A11b. The third end A11a is in communication with the second end A12b.

[0087] A part of the second cooling circuit A20 includes a second generator 420 of the second range extender 400. Among them, both ends of the aforementioned part of the second cooling circuit A20 are respectively in communication with the aforementioned first end A12a and the fourth end A11b to reuse the first radiator A11 and the first mechanical pump A12 for another part of the second cooling circuit A20.

[0088] In this way, for the hybrid device 1000 provided in the present application, compared with configuring one range extender, by configuring two range extenders, the displacement and power of a single range extender can be made smaller. Therefore, in the case of the same total power generation, the total weight of the two range extenders is lighter, which is beneficial to the lightweight of the hybrid device 1000. In addition, the performance requirements for the relevant components of the small-power range extender are lower, and the manufacturing process is more mature. Therefore, the manufacturing, maintenance, and replacement costs are all lower, which is beneficial to reducing the vehicle purchase cost of users; at the same time, the small-power range extender has a smaller volume and is convenient to arrange in a limited space. In addition, it is convenient to adjust the power output of the two range extenders according to the actual load demand. For example, in a low-load working condition, only one range extender needs to operate to prevent low efficiency and high energy consumption at low loads; in a high-load working condition, two range extenders can be operated simultaneously to meet the power demand. Finally, when one of the two range extenders fails, the other can continue to operate to ensure that the hybrid device 1000 does not break down, thereby improving the reliability of the hybrid device 1000.

[0089] On this basis, the thermal management system A100 provided by the present application enables the first cooling circulation loop A10 to include a first radiator A11, a first mechanical pump A12, and a first generator 320 connected in series in sequence, so that the first mechanical pump A12 can drive the coolant in the first cooling circulation loop to cool the first generator 320 to ensure the efficient operation of the first generator 320; by making a part of the second cooling circulation loop A20 include a second generator 420 and reusing the first radiator A11 and the first mechanical pump A12 for another part of the second cooling circulation loop A20, the first mechanical pump A12 can drive the coolant in the second cooling circulation loop A20 to cool and lower the temperature of the second generator 420 to ensure the reliability of the second generator 420. At the same time, it can also reduce the cost of the thermal management system A100, and further reduce the overall cost of the equipment.

[0090] Based on this, by making a part of the first cooling circulation loop including the first generator 320 and a part of the second cooling circulation loop including the second generator 420 be connected in parallel to the first end A12a and the fourth end A11b, the flow paths of the first cooling circulation loop and the second cooling circulation loop A20 are shorter, the water resistance in the cooling loop is smaller, and the cooling effect on the two generators is better. It can prevent the temperature of the coolant from being too high when flowing through the second generator when the two generators are connected in series in the same cooling circulation loop, so that the cooling effect on the second generator cannot be achieved.

[0091] In some other embodiments, the second cooling circulation loop A20 may also include a second radiator (not shown in the figure) and a second mechanical pump (not shown in the figure), and the second radiator, the second mechanical pump, and the second generator 420 are connected in series in sequence. In this way, the second cooling circulation loop A20 and the first cooling circulation loop A10 are independent of each other, and the cooling effect on the two generators can also be ensured.

[0092] Please continue to refer to Figure 10 , the second cooling circulation loop A20 further includes the aforementioned drive motor 830. The drive motor 830 is connected in series between the first radiator A11 and the second generator 420 and is located downstream of the second generator 420. In this way, the first mechanical pump A12 can drive the coolant cooled by the first radiator A11 to cool the second generator 420 and then cool the drive motor 830, and can fully utilize the coolant in the circulating state to cool different components in sequence according to the different requirements of the generator and the drive motor 830 for the inlet temperature of the coolant, so as to simplify the structure of the thermal management system A100.

[0093] Please continue to refer to Figure 10, the first cooling cycle loop A10 further includes the aforementioned controller group 840. The controller group 840 is connected in series between the first mechanical pump A12 and the first generator 320 and is located upstream of the first generator 320. In this way, the first mechanical pump A12 can drive the coolant cooled by the first radiator A11 to cool each controller in the controller group 840 sensitive to low temperature and then cool the first generator 320, and can fully utilize the coolant in the circulating state to cool different components in sequence according to the different requirements of different components for the inlet temperature of the coolant, so as to simplify the structure of the thermal management system A100.

[0094] Please continue to refer to Figure 10 , the first cooling cycle loop A10 further includes the aforementioned steering pump 861. The steering pump 861 is connected in series between the controller group 840 and the first radiator A11 and is located downstream of the controller group 840.

[0095] The first cooling cycle loop A10 further includes the aforementioned air compressor 871. The air compressor 871 is connected in series between the controller group 840 and the first radiator A11 and is located downstream of the controller group 840. Specifically, the steering pump 861 and the air compressor 871 are located upstream of the first generator 320.

[0096] In this way, the first mechanical pump A12 can drive the coolant cooled by the first radiator A11 to cool the controller group 840 sensitive to low temperature, then cool the steering pump 861 and the air compressor 871, and then cool the first generator 420, and can fully utilize the coolant in the circulating state to cool different components in sequence according to the different requirements of different components for the inlet temperature of the coolant and the layout positions of the components on the overall equipment, so as to simplify the structure of the thermal management system A100.

[0097] In some other embodiments, the steering pump 861 and the air compressor 871 may also be located downstream of the first generator 320.

[0098] The thermal management system A100 further includes a first expansion tank A60. The first expansion tank A60 is connected to the pipeline between the first mechanical pump A12 and the first radiator A11.

[0099] On the above basis, please refer to Figure 11 and Figure 12 , Figure 11 For Figure 3 a partial structure diagram of the thermal management system A100 of the hybrid device 1000 shown, Figure 12 For Figure 3Schematic diagram of the air conditioning system 850 of the hybrid device 1000 shown. The thermal management system A100 further includes a third cooling circulation loop A30 and a first air conditioning refrigeration loop A40. The third cooling circulation loop A30 includes a first heat exchange part A31, a third mechanical pump A32, a first heater A33, and the aforementioned battery 810 connected in series in sequence. The third cooling circulation loop A30 further includes a second expansion tank A34, and the second expansion tank A34 is connected to the pipeline between the third mechanical pump A32 and the first heat exchange part A31. The second expansion tank A34, the first expansion tank A60, the carbon canister 730, and the steering fluid reservoir 862 can be integrally fixed on the same bracket.

[0100] The first air conditioning refrigeration loop A40 includes the aforementioned air conditioning compressor 851, a second heat exchange part A41, and an outdoor heat exchanger A42 connected in series in sequence. The second heat exchange part A41 is in thermal communication with the first heat exchange part A31 so that the refrigerant flowing through the second heat exchange part A41 can absorb the heat of the coolant flowing through the first heat exchange part A31. Based on this, the controller group further includes a first electric heating controller (not shown in the figure), and the first electric heating controller is electrically connected to the first heater to control and protect the first heater.

[0101] In this way, when it is necessary to heat the battery 810, the first heater A33 can be started to heat the coolant in the third cooling circulation loop A30 so that the coolant can be heated and then heat the battery 810; when it is necessary to cool the battery 810, the first heater A33 can be stopped from heating, and the air conditioning compressor 851 can be started to make the refrigerant flow in the first air conditioning refrigeration loop A40 and perform heat exchange with the first heat exchange part A31 at the second heat exchange part A41 to cool the coolant in the third cooling circulation loop A30 so that the coolant can be cooled and then cool the battery 810. In this way, the battery 810 can be within the optimal working range.

[0102] On the above basis, the thermal management system A100 further includes a second air conditioning refrigeration loop. The second air conditioning refrigeration loop includes an air conditioning compressor 851, an indoor heat exchanger of the indoor unit 852, and an outdoor heat exchanger A42 connected in series in sequence. Among them, the air conditioning compressor 851 and the outdoor heat exchanger A42 of the first air conditioning refrigeration loop A40 are reused as part of the second air conditioning refrigeration loop. The first air conditioning refrigeration loop A40 and the second air conditioning refrigeration loop together form the air conditioning system 850.

[0103] In this way, by using one air conditioning compressor 851 and an outdoor heat exchanger A42, it is possible to cool the cab 200 and also cool the coolant in the third cooling circulation loop A30, simplifying the structure of the air conditioning system 850.

[0104] Please refer to Figure 10 and Figure 12, the thermal management system A100 further includes a first cooling fan A50. The first cooling fan A50 is connected to both the first radiator A11 and the outdoor heat exchanger A42. The first cooling fan A50 is used to drive air flow to cool the coolant flowing through the first radiator A11 and the refrigerant flowing through the outdoor heat exchanger A42. Specifically, the first cooling fan A50, the first radiator A11, and the outdoor heat exchanger A42 can be integrally fixed to a bracket and fixed to the first longitudinal beam 110 of the vehicle frame 100 through the bracket.

[0105] In this way, the first cooling fan A50 can cool the coolant flowing through the first radiator A11 and the refrigerant flowing through the outdoor heat exchanger A42, making the structure of the thermal management system A100 more compact and also making the heat dissipation efficiency of the thermal management system A100 higher.

[0106] Based on the above, please also refer to Figure 6 and Figure 13 , Figure 13 is Figure 3 a partial schematic diagram of the thermal management system A100 of the hybrid device 1000 shown. The thermal management system A100 further includes a fourth cooling circuit A70 and a fifth cooling circuit A80. The fourth cooling circuit A70 includes a third radiator A71, a fourth mechanical pump (not shown in the figure), and a first engine 310 connected in series in sequence. The fifth cooling circuit includes a fourth radiator A81, a fifth mechanical pump (not shown in the figure), and a second engine 410 connected in series in sequence. Specifically, the third radiator A71 and the fourth radiator A81 can be integrally provided with the aforementioned first intercooler 531 and the second intercooler 532. In this way, the coolant in the two cooling circuits cools the first engine 310 and the second engine 410 respectively.

[0107] The thermal management system A100 further includes a second cooling fan A90. The second cooling fan A90 is connected to both the third radiator A71 and the fourth radiator A81. The second cooling fan A90 is used to drive air flow to cool the coolant flowing through the third radiator A71 and the fourth radiator A81.

[0108] The thermal management system A100 further includes a third expansion tank A91. The third expansion tank A91 is connected to the pipeline between the fourth mechanical pump and the third radiator A71, and the pipeline between the fifth mechanical pump and the fourth radiator A81.

[0109] In the description of this specification, specific features, structures, materials, or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0110] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A thermal management system for a hybrid power device, characterized in that, Comprising: A first cooling cycle loop, the first cooling cycle loop including a first radiator, a first mechanical pump, and a first generator of a first range extender connected in series in sequence; the first mechanical pump includes a first end and a second end, the first radiator includes a third end and a fourth end, and the third end is in communication with the second end; A second cooling cycle loop, a part of the second cooling cycle loop including a second generator of a second range extender; Wherein, both ends of the part of the second cooling cycle loop are respectively in communication with the first end and the fourth end to reuse the first radiator and the first mechanical pump for another part of the second cooling cycle loop; or, Another part of the second cooling cycle loop includes a second radiator and a second mechanical pump, and the second radiator, the second mechanical pump, and the second generator are connected in series in sequence.

2. The thermal management system according to claim 1, characterized in that The second cooling cycle loop further includes a drive motor, and the drive motor is connected in series between the first radiator and the second generator and is located downstream of the second generator.

3. The thermal management system according to claim 2, characterized in that The first cooling cycle loop further includes a controller group, the controller group is connected in series between the first mechanical pump and the first generator and is located upstream of the first generator, the controller group includes a motor controller and / or a range extender controller, the motor controller is electrically connected to the drive motor, and the range extender controller is electrically connected to both the first range extender and the second range extender.

4. The thermal management system according to claim 3, characterized in that The first cooling cycle loop further includes a steering pump, the steering pump is connected in series between the controller group and the first radiator and is located downstream of the controller group, and the steering pump is used as a power source for the hydraulic power steering system of the hybrid device.

5. The thermal management system according to claim 4, characterized in that The first cooling cycle loop further includes an air compressor, the air compressor is connected in series between the controller group and the first radiator and is located downstream of the controller group, and the air compressor is used as a power source for the pneumatic braking system of the hybrid device.

6. The thermal management system according to claim 5, characterized in that The controller group further includes a steering pump controller, and the steering pump controller is electrically connected to the steering pump; and / or, The controller group further includes an air compressor controller, and the air compressor controller is electrically connected to the air compressor.

7. The thermal management system according to any one of claims 1-5, characterized in that The thermal management system further includes: A third cooling cycle loop, the third cooling cycle loop including a first heat exchange part, a third mechanical pump, a first heater, and a battery connected in series in sequence; A first air-conditioning refrigeration loop, the first air-conditioning refrigeration loop including an air-conditioning compressor, a second heat exchange part, and an outdoor heat exchanger connected in series in sequence, and the second heat exchange part is thermally connected to the first heat exchange part so that the refrigerant flowing through the second heat exchange part absorbs the heat from the coolant in the first heat exchange part.

8. The thermal management system according to claim 7, wherein, The thermal management system further includes: A first cooling fan, which is connected to both the first radiator and the outdoor heat exchanger, and is configured to drive an air flow to cool the coolant flowing through the first radiator and the refrigerant flowing through the outdoor heat exchanger.

9. A hybrid device, characterized in that, Comprising: A thermal management system, which is the thermal management system according to any one of claims 1-8.

10. A hybrid device, characterized in that, Comprising: Two range extenders, which include a first range extender and a second range extender; Range extender controller, the range extender controller is electrically connected to the first range extender and the second range extender, and the range extender controller is configured to: if the required power generation power P of the hybrid device req is less than or equal to the first threshold, then control the actual power generation power P of the first range extender act1 to match the P req ; if the P req is greater than the first threshold and less than or equal to the second threshold, then control the actual power generation power P of the first range extender act1 to match the first threshold, and control the actual power generation power P of the second range extender act2 to match the difference between the P req and the first threshold; Wherein, the first threshold is less than the maximum power generation P of the range extender max , and the second threshold is greater than the maximum power generation P of the range extender max , and less than the sum of the maximum power generations of two range extenders.

11. The hybrid device according to claim 10, wherein The range extender controller is further configured to: if the P req is greater than the second threshold, control the actual power generation power P act2 of the second range extender to match the maximum power generation power P max of the range extender, and control the actual power generation power P act1 of the first range extender to match the difference between the P req and the maximum power generation power P max of the range extender.

12. The hybrid device according to claim 10, wherein The range extender controller is further configured to: if the cumulative power generation of the first range extender among the two range extenders is less than that of the second range extender, then use the first range extender as the first range extender.

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