Test bench, heat balance management test system and test method

Abstract

The present application belongs to the technical field of testing, and particularly relates to a test bench, a thermal balance management test system and a test method, wherein the test bench comprises: a frame, the bottom of the frame is respectively provided with casters and hooves, and the periphery of the frame is provided with an extension platform for layout of a primary function system; a main platform, the main platform is arranged on the top of the frame, and the main platform is used for layout of a hybrid power system and a control module. The test bench provided by the present application is provided with an intermediate frame and four extension platforms, so that the intermediate top can be arranged with a hybrid power system, and the periphery can be arranged with various heat dissipation systems for the hybrid power system, thereby meeting various test schemes and adjustment of different schemes, and the present application has the advantages of strong universality and flexibility, convenience, simple structure and compactness.

Description

Technical Field

[0001] This invention belongs to the field of testing technology, specifically relating to a test bench, a thermal balance management test system, and a test method. Background Technology

[0002] For hybrid power systems, thermal balance management is required. Due to the complexity of cooling hybrid power systems and considering factors such as power consumption and energy saving, it is necessary to consider using multiple media for thermal balance.

[0003] Currently, most test benches are designed for engine performance testing only, and there are no test benches specifically designed for such complex systems. Furthermore, current testing is generally performed on engines with specific installations, which lacks versatility and flexibility. Summary of the Invention

[0004] The present invention addresses the above-mentioned technical problems by providing a test bench, a thermal balance management test system, and a test method.

[0005] A test bench, the test bench comprising:

[0006] The frame is equipped with casters and feet at its bottom, and an extension platform is provided around the frame. The extension platform is configured to house a primary functional system for a primary test thermal balance management system.

[0007] The main platform is located at the top of the frame and is used to house the hybrid power system and control module.

[0008] Optionally, the frame is constructed using square steel or aluminum profiles.

[0009] Optionally, the frame is provided with connecting plates on its four sides, the connecting plates being located on the upper side of the extension platform, and the connecting plates being used to arrange the pipelines between the primary functional system and the hybrid power system and control module.

[0010] Optionally, the connecting plate is an aluminum plate.

[0011] Optionally, the caster is a heavy-duty caster.

[0012] Optionally, the hoof is a heavy-duty hoof.

[0013] Optionally, the hoof is a rotatable hoof.

[0014] Optionally, the main platform is constructed using a frame made of square steel or aluminum profiles.

[0015] Optionally, the main platform is a cast iron platform.

[0016] Optionally, the main platform is provided with one or more parallel connecting slots.

[0017] Optionally, the overall length and width of the test bench are 1200mm*1000mm, and the overall height of the test bench is 1200mm.

[0018] Optionally, the overall length, width and height of the main platform are 1200mm*1000mm*200mm.

[0019] Optionally, the main platform shall bear a load of not less than 2 tons per square centimeter.

[0020] Optionally, the test bench further includes:

[0021] A connecting frame is used to support and fix the hybrid power system, and the connecting frame is detachably connected to the main platform.

[0022] Optionally, the connecting frame includes:

[0023] A base plate, which is detachably connected to the main platform;

[0024] Two main brackets are symmetrically connected to the base plate by fasteners, and the main brackets are connected to the engine of the hybrid power system by fasteners.

[0025] Optionally, there is a preset distance between the two main supports.

[0026] Optionally, the connecting frame further includes:

[0027] A reinforcing plate, with each end of the reinforcing plate connected to one of the two main supports.

[0028] Optionally, the connecting frame further includes:

[0029] At least two reinforcing ribs, at least one of the reinforcing ribs being connected to the base plate and one of the main supports respectively, and at least another reinforcing rib being connected to the base plate and another of the main supports respectively.

[0030] Optionally, the top surface of the main support is an arc-shaped surface for mating with the outer peripheral surface of the engine.

[0031] Optionally, when the main platform is provided with a connecting groove and the connecting groove is an inverted T-shaped groove, the base plate is locked to the main platform by bolts and T-nuts, and the T-nuts are placed upside down in the connecting groove.

[0032] Optionally, the primary functional system includes a water cooling circulation system, a lubricating oil cooling circulation system, a fuel system, a fuel-lubricating oil heat exchange system, and an air-cooled cooling system;

[0033] The water cooling circulation system is located on the front extension platform, the lubricating oil cooling circulation system is located on the left extension platform, the fuel system is located on the right extension platform, and the fuel-lubricating oil heat exchange system and the air cooling system are located on the rear extension platform.

[0034] The hybrid power system and control module include an engine, an output motor that drives the engine to output electrical energy, a motor controller for the output motor, an electronic controller for the engine, and a powertrain controller.

[0035] The engine's exhaust port is located on the front side.

[0036] Optionally, the main platform is also used to deploy secondary functional systems for subsequent testing and thermal balance management systems.

[0037] At this point, the control module is a control module for the motor, which integrates various controllers that are smaller in size than the primary functional system. By switching the pipeline, the hybrid power system and the smaller control module are switched from being connected to the primary functional system to being connected to the secondary functional system.

[0038] Optionally, the secondary functional system includes some or all of the functional components of the primary functional system at a scaled-down ratio.

[0039] Optionally, the control module corresponding to the secondary functional system includes any one or more combinations of motor controllers, electronic controllers, powertrain controllers, and power management controllers.

[0040] A thermal balance management testing system, comprising:

[0041] The primary functional system, hybrid power system, and control module are arranged on the test bench of the present invention, wherein,

[0042] The primary functional system is used for primary test thermal balance management system testing and is located on the extension platform of the test bench;

[0043] The hybrid power system includes an engine and an output motor that drives the output motor to generate electrical energy. The control module includes a motor controller for the output motor. The hybrid power system and the motor controller are located on the main platform of the test bench.

[0044] Optionally, the thermal balance management test system further includes a secondary functional system for subsequent thermal balance management tests. The secondary functional system includes some or all of the functional components of the primary functional system at several times smaller, and the secondary functional system is integrated around the hybrid power system.

[0045] Optionally, the secondary functional system includes any one or more of the following: a lubricating oil cooling circulation system, a fuel system, a water cooling circulation system, a fuel-lubricating oil heat exchange system, and an air-cooled cooling system, which are scaled down several times compared to the primary functional system. In this case, the volume of each controller in the control module corresponding to the secondary functional system is scaled down compared to the primary functional system and integrated into the output motor.

[0046] 9. A test method for a thermal balance management test system, comprising:

[0047] Design a test platform that meets simulation requirements. Each pipeline in the test platform is equipped with a corresponding sensor at a preset key node and before and after the pump. The sensor is at least one of a flow meter, a pressure sensor, a temperature sensor, and a flow regulating valve.

[0048] In the initial stage, a primary functional system is used to conduct a primary thermal balance test. The cooling medium output and return containers and pipelines of the test platform are enlarged by several times the conventional size to ensure sufficient redundancy during the test, so that they can be flexibly adjusted. At this time, the motor controller, electronic controller and powertrain controller are placed separately, and a corresponding cooling scheme is formulated for the motor controller.

[0049] Based on the initial test results, determine the parameters that meet the actual working conditions, select pumps that can achieve the parameters, and conduct a second test by adjusting the speed of each pump.

[0050] Based on the results of the retest, the size of each controller in the control module was gradually reduced and integrated into the motor. A two-level functional system was used to conduct a two-level thermal balance test. The flow rate of the lubricating oil tank and various heat exchange equipment was reduced and integrated into the top surface of the test bench, thereby creating an integrated system. At the same time, the models of each pump were adjusted and retested to make them more in line with the structural requirements of the actual product.

[0051] Optionally, in the secondary test, the control module includes any one or more combinations of motor controllers, electronic controllers, powertrain controllers, and power management controllers.

[0052] Optionally, a test platform that meets the simulation requirements is designed, including:

[0053] For heat-generating equipment including engines, output motors, and motor controllers, based on the working conditions including working temperature and working pressure, as well as the structural characteristics of each heat-generating device, simulation analysis is conducted to select different cooling media for simulation testing, and to determine the required cooling media flow rate, inlet temperature, and outlet temperature for the heat-generating equipment to operate under specified working conditions.

[0054] Based on the pre-set thermal management system test plan, and combined with the parameters in the actual test pipeline network, including pressure, pressure drop, and fuel temperature and pressure required for engine combustion, a test platform that can meet the simulation requirements is designed.

[0055] Beneficial effects: The present invention has at least one or more of the following advantages:

[0056] 1. The test bench provided by the present invention, through the middle frame and the four-sided extension platform, allows the hybrid power system to be arranged at the top center, while various heat dissipation systems for the hybrid power system can be arranged around the perimeter, thereby meeting the requirements of various test schemes and adjustments to different schemes. The present invention has the advantages of strong versatility and flexibility, convenience, simple structure and compactness.

[0057] 1. The test bench of the present invention is equipped with casters and feet at the bottom, making the test bench a mobile test bench that can be changed at any time, making it more flexible.

[0058] 2. The functional system of the present invention includes a water cooling circulation system, a lubricating oil cooling circulation system, a fuel system, a fuel-lubricating oil heat exchange system, and an air cooling system. The test schemes that can be completed include controllers for separate water-cooled output motors, separate lubricating oil cooling, separate fuel cooling, combination of lubricating oil and fuel, and combination of lubricating oil and air cooling, etc. Attached Figure Description

[0059] Figure 1 This is a schematic diagram of one structure of the test bench of the present invention;

[0060] Figure 2 for Figure 1 Another perspective illustration;

[0061] Figure 3 for Figure 2 Top view;

[0062] Figure 4 for Figure 2 Side view;

[0063] Figure 5A This is a schematic diagram of a connection structure between the connecting frame and the engine according to the present invention;

[0064] Figure 5B for Figure 5A A sectional view;

[0065] Figure 6 This is a diagram showing the positional relationship between the connecting frame and the main platform of the present invention;

[0066] Figure 7 This is a schematic diagram of an application structure of the test bench of the present invention;

[0067] Figure 8 for Figure 7 Top view;

[0068] Figure 9 for Figure 7 Rear view diagram;

[0069] Figure 10 for Figure 7 The right-side view;

[0070] Figure 11 for Figure 7 Front view;

[0071] Figure 12 This is a diagram showing the pipeline connection between the water cooling circulation system and the motor controller of the present invention;

[0072] Figure 13 This is a diagram showing the connection relationships of some pipelines in the thermal balance system of the present invention. Detailed Implementation

[0073] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so as to better understand the purpose, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are only for illustrating the essential spirit of the technical solution of the present invention.

[0074] In the following description, certain specific details are set forth for the purpose of illustrating various disclosed embodiments in order to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the art will recognize that embodiments may be practiced without one or more of these specific details. In other instances, well-known apparatuses, structures, and techniques associated with this application may not have been shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0075] Throughout this specification, references to "an embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, the appearance of "in an embodiment" or "an embodiment" in various places throughout the specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0076] In the following description, in order to clearly demonstrate the structure and working method of the present invention, a number of directional terms will be used. However, terms such as "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", and "down" should be understood as convenient terms and not as limiting terms.

[0077] Reference Figures 1 to 4This invention provides a test bench, which includes a frame 11, casters 12, feet 13, an extension platform 14, and a main platform 15.

[0078] The bottom of the frame 11 is equipped with casters 12 and feet 13. The design of the casters 12 and feet 13 makes the test stand a mobile stand, which can be changed at any time, making it more flexible and stable.

[0079] The frame 11 is surrounded by extension platforms 14, which are configured to house the primary functional systems for the primary test thermal balance management system (also known as the thermal balance system). These primary functional systems include, but are not limited to, at least one of the following systems: a water cooling circulation system, a lubricating oil cooling circulation system, a fuel system, a fuel-lubricating oil heat exchange system, and an air-cooled cooling system.

[0080] The main platform 15 is located on top of the frame 11 and is used to house the hybrid power system and control module.

[0081] The test bench of the present invention, through the central frame 11 and the four extended platforms 14, allows the main platform 15 at the top center to be used to arrange the hybrid power system and control module, while the extended platforms 14 around the perimeter can be used to arrange various heat dissipation systems for the hybrid power system, thereby meeting the requirements of various thermal balance test schemes and adjustments to different schemes.

[0082] In one embodiment, the frame 11 is constructed using square steel or aluminum profiles.

[0083] For example, frame 11 is constructed by welding 45# square steel.

[0084] It is preferable to spray paint on the surface of frame 11.

[0085] In one embodiment, a connecting plate 111 is provided on all four sides of the frame 11. The connecting plate 111 is located on the side above the extension platform 14. The connecting plate 111 is used to arrange the pipeline between the primary functional system and the hybrid power system and control module.

[0086] In one embodiment, the connecting plate 111 is an aluminum plate.

[0087] In one embodiment, the casters 12 are heavy-duty casters. This ensures that the weight can be supported while facilitating the movement of the test bench, increasing the flexibility of the testing site.

[0088] The type of caster 12 can be selected according to actual needs. It is preferred to use 4-inch casters for casters 12, and the total height of casters 12 is preferably 150mm.

[0089] The caster 12 is detachably connected to the frame 11, and the caster 12 and the frame 11 are fixed by a T-shaped nut block and bolts.

[0090] The connection method when the caster 12 is connected to the frame 1 can be as follows: four connection holes with a diameter of 7mm are directly drilled on the frame 11, for example, square steel, and the caster 12 is screwed onto the connection holes.

[0091] In one embodiment, the foot 13 is a heavy-duty foot 13. This ensures that the weight can be supported while facilitating the movement of the test bench, thus increasing the flexibility of the testing site.

[0092] In one embodiment, the hoof 13 is a rotatable hoof 13.

[0093] This allows the test platform to be moved onto the plane via the casters 12, and the hoof 13 to be rotated to engage with the plane. When the test platform needs to be moved, the hoof 13 is raised off the plane by rotating it in the opposite direction.

[0094] Typically, the bottom of the hoof 13 has a plastic nylon part, which provides grip when the hoof 13 abuts against a flat surface through the friction between the plastic nylon part and the flat surface.

[0095] Of course, if the lateral thrust of the test platform is relatively large, the lateral tension can be increased by binding other fixed objects.

[0096] In one embodiment, the main platform 15 is constructed using a frame made of square steel or aluminum profiles.

[0097] For example, the main platform 15 is constructed using 80mm square steel.

[0098] In one embodiment, the main platform 15 is a cast iron platform.

[0099] In one embodiment, the main platform 15 is provided with one or more parallel connecting slots 151.

[0100] With the engine exhaust port as a reference, the length direction of the connecting groove 151 is preferably in the front-to-back direction, and several connecting grooves 151 are arranged side by side in the left-to-right direction on the top surface of the main platform 15.

[0101] The connection slot 151 on the main platform 15 can be a standard slot in the prior art, such as an inverted T-shaped standard slot.

[0102] When the main platform 15 is provided with a number of connecting slots 151, the center distance between the slots of two adjacent connecting slots 151 is preferably 63mm.

[0103] In one embodiment, the overall length and width of the test bench are 1200mm*1000mm, and the overall height of the test bench is 1200mm.

[0104] Given the different types of hybrid power systems, and in order to achieve test bench versatility, the bench dimensions can accommodate a certain range of variations. For example, the dimensions that can be accommodated are as follows:

[0105] 1. Hybrid power system assembly dimensions: 768*318*345;

[0106] 2. Hybrid power system assembly dimensions: 886*302*360;

[0107] By combining the dimensions of both, the test bench is designed to accommodate both types of engine assemblies, controllers, and their fuel and lubrication components. The test bench adopts the specifications of this embodiment.

[0108] In one embodiment, the length and width of the main platform 15 are aligned with the length and width of the frame 11.

[0109] When the overall length and width of the test bench are 1200mm*1000mm, the overall length, width and height of the main platform 15 are 1200mm*1000mm*200mm.

[0110] In one embodiment, the main platform 15 bears a load of not less than 2 tons per square centimeter.

[0111] Preferably, the main platform 15 is a cast iron platform weighing approximately 1400 kg and capable of bearing 2 tons per square centimeter.

[0112] In one embodiment, reference is made to Figures 5A to 6 The test bench also includes a connecting frame 16, which supports and fixes the hybrid power system. The connecting frame 16 is detachably connected to the main platform 15. Preferably, the connecting frame 16 is used to mount the engine on the main platform 15. The connecting frame 16 and the engine are also detachably connected.

[0113] In one embodiment, the connecting frame 16 includes a base plate 161 and two main supports 162. The base plate 161 is detachably connected to the main platform 15. The two main supports 162 are symmetrically connected to the base plate 161 by fasteners, and the main supports 162 are connected to the engine of the hybrid power system by fasteners.

[0114] In practical implementation, the main bracket 162 and the base plate 161 can be connected by several M12*60 bolts. The main bracket 162 and the engine can be connected by several M10*55 bolts. Figure 5B As shown, the engine 21 is secured to the two main brackets 162 on the left and right sides by four M10*55 hex bolts on the left and right sides.

[0115] In one embodiment, the two main supports 162 are spaced at a predetermined distance.

[0116] In one embodiment, the connecting frame 16 further includes a reinforcing plate 163, with two main supports 162 connected to both ends of the reinforcing plate 163.

[0117] In one embodiment, the connecting frame 16 further includes at least two reinforcing ribs 164, at least one reinforcing rib 164 is connected to the base plate 161 and a main support 162 respectively, and at least another reinforcing rib 164 is connected to the base plate 161 and another main support 162 respectively, so as to form a triangular stable structure.

[0118] When the reinforcing rib 164 is connected to the base plate 161, welding is preferred. When the reinforcing rib 164 is connected to the main support 162, welding is preferred.

[0119] The reinforcing rib 164 preferably adopts an L-shaped structure with horizontal and vertical sections. The horizontal section of the reinforcing rib 164 is connected to the base plate 161, and the vertical section of the reinforcing rib 164 is connected to the main support 162.

[0120] In one embodiment, the top surface of the main support 162 is an arc-shaped surface for mating with the outer peripheral surface of the engine 21.

[0121] In one embodiment, when the main platform 15 is provided with a connecting groove 151 and the connecting groove 151 is an inverted T-shaped groove, refer to Figure 6 The base plate 161 is locked to the main platform 15 by bolts 1611 and T-nuts 1612, with the T-nuts 1612 placed upside down in the connecting groove 151.

[0122] In this embodiment, the engine 21 is mounted on the main platform 15 via the base plate 161. As long as the base plate 161 can be adjusted to accommodate engines 21 with different air intake and exhaust directions, engines 21 with different air intake and exhaust directions can be arranged on the top of the test bench. For example, one type of engine has side air intake and front exhaust of high-temperature hot air; another type has front air intake and side exhaust of high-temperature hot air, with an exhaust port reserved in the testing chamber for connection with the engine exhaust port. In this way, by adjusting the base plate 161, different engines can be arranged, and the exhaust ports of different types of engines can be connected to each other. This does not change the test bench and further improves the flexibility of test bench use.

[0123] The hybrid power system includes an engine 21 and an output motor 22 driven by the engine 21 to output electricity. The control module includes a motor controller 23 for the output motor 22, an electronic control unit (ECU, also known as a starter controller) for the engine 21, and a powertrain controller (SRCU). In one embodiment, the exhaust port of the engine 21 is located at the front. The main heat-generating devices are the bearings of the engine, the bearings of the output motor, and the motor controller 23.

[0124] In one embodiment, reference is made to Figures 7 to 11 The primary functional system includes a water cooling circulation system 30, a lubricating oil cooling circulation system 40, a fuel system 50, a fuel-lubricating oil heat exchange system 60, and an air-cooled cooling system 70.

[0125] The motor controller in the hybrid power system and control module can be organically connected to the above-mentioned systems through various pipelines, so as to cool down the bearings of the engine, the bearings of the output motor and the motor controller in the hybrid power system, and to supply fuel to the engine for ignition.

[0126] The hybrid power system and control module include an engine 21, an output motor 22 that drives the engine 21 to output electric power, a motor controller 23 for the output motor 22, an electronic controller (ECU, also known as a starter controller) for the engine 21, and a powertrain controller (SRCU). The exhaust port of the engine 21 is located on the front side.

[0127] The media output, return, and piping connections between the above systems can be achieved using existing technologies. This embodiment provides an organic layout for the above systems:

[0128] The water cooling circulation system 30 is located on the front extension platform 14, the lubricating oil cooling circulation system 40 is located on the left extension platform 14, the fuel system 50 is located on the right extension platform 14, and the fuel-lubricating oil heat exchange system 60 and the air-cooled cooling system 70 are located on the rear extension platform 14.

[0129] In one embodiment, the main platform 15 is also used to lay out a secondary functional system for subsequent testing of the thermal balance system. In this case, the control module is a control module for the motor in which the volume of each controller is reduced relative to the primary functional system. By switching the pipeline, the hybrid power system and the reduced-volume control module are switched from being connected to the primary functional system to being connected to the secondary functional system.

[0130] The integration method and structure of each controller in this embodiment can adopt existing technologies, such as the technical content disclosed in patent CN119253917A, which will not be repeated here.

[0131] By integrating a secondary functional system for subsequent testing on the main platform 15, and by switching pipelines, the test can be switched from the primary system solution test to the secondary system solution test.

[0132] In one embodiment, the secondary functional system includes some or all of its functional components scaled down by a factor of several compared to the primary functional system. The specific functional components included in the secondary system are determined based on the scheme selected during primary testing. Furthermore, "scaled down by a factor of several" in this document primarily refers to a reduction in the volume of the medium it can hold or the flow rate of the medium it provides. For example, if the lubricating oil tank volume in the primary functional system is 30L, it would be 18L in the secondary functional system. Another example is replacing heat exchange / heat dissipation components with small-volume microchannel components; although the medium volume or flow rate is reduced, the heat exchange efficiency is higher, facilitating integration. Accordingly, other components, such as pumps, are modified accordingly. Based on redundancy testing of the primary functional system, the secondary functional system is scaled down, allowing it to be integrated onto the main platform 15, closely resembling the actual product.

[0133] In other words, a secondary functional system can include some necessary functional components from the primary functional system, or it can use all the functional components of the primary functional system after high integration. For example, the lubricating oil tank in the lubricating oil cooling circulation system 40 and various heat exchange devices (such as the fuel oil heat exchange system 60 and the air-cooled cooling system 70) can be integrated onto the main platform 15 to create a more miniaturized and highly integrated system that closely resembles the actual product.

[0134] In one embodiment, the control module corresponding to the secondary functional system includes any one or more combinations of a motor controller, an electronic controller, a powertrain controller, and a power management controller.

[0135] This invention also provides a thermal balance management testing system, including:

[0136] The primary functional system, hybrid power system, and control module are arranged on the test bench provided in the above embodiments of the present invention, wherein,

[0137] The primary functional system is used for primary testing of the thermal balance management system and is located on the extension platform of the test bench.

[0138] The hybrid power system includes an engine and an output motor that drives the output motor to generate electrical energy. The control module includes a motor controller for the output motor. The hybrid power system and the motor controller are located on the main platform of the test bench.

[0139] In one embodiment, the thermal balance management test system further includes a secondary functional system for subsequent thermal balance management tests. The secondary functional system includes some or all of the functional components of the primary functional system at a scaled-down ratio, and the secondary functional system is integrated around the hybrid power system.

[0140] In one embodiment, the secondary functional system includes any one or more of the following: a lubricating oil cooling circulation system, a fuel system, a water cooling circulation system, a fuel-lubricating oil heat exchange system, and an air-cooled cooling system, which are scaled down several times compared to the primary functional system. In this case, the volume of each controller in the control module corresponding to the secondary functional system is scaled down compared to the primary functional system and integrated into the output motor.

[0141] The integration method and structure of each controller in this embodiment can adopt existing technologies, such as the technical content disclosed in patent CN119253917A, which will not be repeated here.

[0142] Reference Figures 7 to 13 The present invention also provides a thermal balancing system, which is preferably installed on the test bench provided in the above embodiments of the present invention. Of course, the thermal balancing system can also be installed on other existing test benches.

[0143] The thermal balance system includes a hybrid power system, a control module, and functional systems. The hybrid power system includes an engine 21 and an output motor 22 that drives the engine 21 to output electricity. The control module includes a motor controller 23 for the output motor 22. The functional systems include a water cooling circulation system 30, an oil cooling circulation system 40, a fuel system 50, a fuel-oil heat exchange system 60, and an air-cooled cooling system 70.

[0144] The bearings of the engine 21, the bearings of the output motor 22, and the motor controller 23 are cooled by at least one or more combinations of the lubricating oil cooling circulation system 40, the fuel system 50, the water cooling circulation system 30, the fuel-oil heat exchange system 60, and the air cooling system 70. In other words, the bearings of the engine 21 and / or the bearings of the output motor 22 and / or the motor controller 23 can be cooled by a combination of lubricating oil cooling, as well as fuel and air cooling.

[0145] The fuel system 50 is also used to supply combustion for the engine 21.

[0146] In one embodiment, the control module is located on the side of the hybrid power system, and the functional system is a primary functional system for primary functional testing, which is located around the hybrid power system and the control module.

[0147] When the thermal balance system is installed on the test bench provided in the above embodiments of the present invention, the hybrid power system and control module are installed on the main platform 15, and the engine 21 of the hybrid power system can be installed on the main platform 15 via the connecting bracket 16. The functional system is installed on the extension platform 14.

[0148] In one embodiment, the exhaust port of engine 21 is located at the front. Water cooling circulation system 30 is located at the front of engine 21, lubricating oil cooling circulation system 40 is located at the left side of engine 21, fuel system 50 is located at the right side of engine 21, and fuel-lubricating oil heat exchange system 60 and air-cooled cooling system 70 are located at the rear of engine 21.

[0149] In this embodiment, the water cooling circulation system 30 is placed at the front of the engine 21. This is because if the fuel system 50 were placed at the front, and the engine 21's combustion nozzle were also at the front, the combustion nozzle temperature would be close to the fuel ignition temperature, posing a safety hazard. Placing the water cooling circulation system 30 at the front of the engine 21 eliminates this safety issue. The lubricating oil cooling circulation system 40 is placed on the left side of the engine 21, closest to the engine inlet, reducing piping layout. The fuel system 50 is placed on the right side of the engine 21, closest to the fuel inlet, further reducing piping layout. In the primary system, the fuel-lubricating oil heat exchange system 60 and the air-cooled cooling system 70 are simple, low-cost heat exchange components. To ensure sufficient heat exchange, these two are placed at the rear, increasing piping flow and enhancing cooling effect.

[0150] Engine 21 is a turbine engine, which is coaxially connected with output motor 22. That is to say, the power turbine of engine 21 and output motor 22 share a shaft.

[0151] This invention is adaptable to two types of engines: one with side air intake and front exhaust of high-temperature hot air, and the other with front air intake and side exhaust of high-temperature hot air. For example... Figures 7 to 11 The engine 21 shown has a structure with side air intake and front (i.e., front) exhaust.

[0152] In practice, an exhaust port for connecting to the engine exhaust outlet is reserved in the testing room. Since the engine exhausts at high temperatures from the front or side, the engine can be repositioned to connect with the reserved exhaust port. This does not require changing the test bench; the connection is altered by changing the joints or pipes between the engine system and various piping systems.

[0153] When the engine 21 is fixed by the base plate 161 of the present invention, the base plate 161 can be installed on the connecting groove 151 of the main platform 15 no matter how the base plate 161 is rotated. By modifying the water circuit, lubricating oil, fuel, and the connecting pipelines between the output motor, motor controller and the engine, it can be universal.

[0154] There is a certain gap between the exhaust port and the outlet to allow outside air to enter and mix with the hot air exiting the exhaust port, thereby reducing the exhaust temperature of the hot air. Preferably, a flare is installed on the engine's exhaust port; more preferably, air is drawn in by an exhaust fan installed at the flare. During exhaust, it is preferable to exhaust through a pipe and using a muffler.

[0155] In addition, to accommodate multiple pipeline adjustments, sufficient flow can be reserved in the pipelines. For example, the lubricating oil flow can be reserved enough to supply the usage flow of one or two lubricating oil lines.

[0156] In one embodiment, the thermal balance system further includes a secondary functional system for subsequent testing. The secondary functional system includes some or all of the functional components of the primary functional system at a scaled-down ratio. The secondary functional system and the control module are respectively integrated around the hybrid power system.

[0157] When the thermal balance system is installed on the test bench provided in the above embodiments of the present invention, the hybrid power system and control module are installed on the main platform 15, and the engine 21 of the hybrid power system can be installed on the main platform 15 via the connecting bracket 16. The secondary functional system is also installed on the main platform 15, thereby creating a more miniaturized and highly integrated system.

[0158] In one embodiment, the secondary functional system includes any one or more of the following: a lubricating oil cooling circulation system, a fuel system, a water cooling circulation system, a fuel-lubricating oil heat exchange system, and an air-cooled cooling system, which are scaled down several times compared to the primary functional system. In this case, the volume of each controller in the control module corresponding to the secondary functional system is scaled down compared to the primary functional system and integrated into the output motor.

[0159] The integration method and structure of each controller in this embodiment can adopt existing technologies, such as the technical content disclosed in patent CN119253917A, which will not be repeated here.

[0160] In one embodiment, reference is made to Figure 12 Since the motor controller 23 is typically a high-power device, it requires cooling during operation to ensure stable operation. Therefore, the water cooling circulation system 30 is used to dissipate heat from the motor controller 23. The water cooling circulation system 30 includes a water tank 31. The outlet of the water tank 31 is connected to the heat dissipation inlet of the motor controller 23 via a pipe, and the heat dissipation outlet of the motor controller 23 is connected to the return outlet of the water tank 31 via a pipe.

[0161] In one embodiment, reference is made to Figure 12 The water cooling circulation system 30 also includes a water filter 32 and a three-way valve 33 for water cooling.

[0162] The water filter 32 is installed on the pipeline between the outlet of the water tank 31 and the heat dissipation inlet of the electric controller of the motor controller 23. A water heat dissipation pressure sensor 34 and a water heat dissipation pressure sensor 35 are respectively installed on the pipelines on both sides of the water filter 32.

[0163] The inlet of the water-cooling three-way valve 33 is connected to the outlet of the water tank 31 through a pipeline. One outlet of the water-cooling three-way valve 33 is connected to the inlet of the water filter 32 through a pipeline. The other outlet of the water-cooling three-way valve 33 is connected to the inlet of the water tank 31 through a pipeline.

[0164] The pressure information on both sides of the water filter 32 is detected by the pressure sensors 34 and 35 for water cooling. When the pressure difference on both sides of the water filter 32 is greater than the preset pressure difference for water cooling, the pipeline between the outlet of the water tank 31 and the water filter 32 is disconnected by the three-way valve 33 for water cooling, and the pipeline between the outlet of the water tank 31 and the inlet of the water tank 31 is connected. When the pressure difference on both sides of the water filter 32 is not greater than the preset pressure difference for water cooling, the pipeline between the outlet of the water tank 31 and the inlet of the water tank 31 is disconnected by the three-way valve 33 for water cooling, and the pipeline between the outlet of the water tank 31 and the water filter 32 is connected.

[0165] In this embodiment, when an abnormal pressure difference occurs in the water filter 32, the pipeline between the outlet and inlet of the water tank 31 is opened via the three-way valve 33 for water cooling, allowing the water flowing out of the outlet of the water tank 31 to return to the water tank 31 through the inlet. When the pressure difference across the water filter 32 is within normal limits, the water flowing out of the outlet of the water tank 31 continues to flow downwards, entering the heat dissipation inlet of the motor controller 23 to cool the motor controller 23.

[0166] In one embodiment, the mesh size of the water filter 32 is 200 to 300 mesh.

[0167] In one embodiment, reference is made to Figure 12 The water cooling circulation system 30 also includes a heat exchanger 36, which is installed on the pipeline between the heat dissipation outlet of the motor controller 23 and the return water inlet of the water tank 31. The heat exchanger 36 exchanges heat with the water flowing out of the heat dissipation outlet of the motor controller 23, so that the water returns to the water tank 31 after being cooled to a certain temperature.

[0168] In one embodiment, reference is made to Figure 12 The water outlet and water inlet of water tank 31 are both located at the top of water tank 31, and the water return outlet of water tank 31 is located at the bottom of the side wall of water tank 31.

[0169] In one embodiment, reference is made to Figure 12 The heat dissipation circulation system 30 also includes at least one of a level gauge 37, an exhaust pipe 38, and a drain valve 39.

[0170] The water level in the water tank 31 is monitored by the level gauge 37. Air is released from the water tank 31 through the vent pipe 38. Water is drained from the water tank 31 through the drain valve 39. Therefore, the drain valve 39 is preferably located at the lower part or bottom of the water tank 31.

[0171] In one embodiment, one or more temperature sensors, one or more pressure sensors, and one or more flow meters can be installed on the closed loop path between the outlet of the water tank 31 and the heat dissipation inlet of the electric controller of the motor controller 23 and the heat dissipation outlet of the electric controller of the motor controller 23 and the return outlet of the water tank 31, so as to realize the monitoring of temperature, pressure or flow at each preset monitoring point on the closed loop path.

[0172] In one embodiment, reference is made to Figure 13 The lubricating oil cooling circulation system 40 includes an oil tank 41. The lubricating oil outlet of the oil tank 41 enters the hybrid power system through a pipeline and is connected to the cooling inlet of the bearing 211 of the engine 21 and the cooling inlet of the bearing of the output motor 22 through two pipelines respectively. The lubricating oil after cooling is connected to the lubricating oil return port of the oil tank 41 through a pipeline via at least one of the cooling systems, namely the cooling outlet shared by the bearing 211 of the engine 21 and the bearing of the output motor 22, through a fuel lubricating oil heat exchange system 60 and an air-cooled cooling system 70.

[0173] In this embodiment, the lubricating oil flowing out of the heat dissipation outlet does not directly enter the lubricating oil return port of the lubricating oil tank 41, but is cooled to a suitable temperature through fuel-cooled or air-cooled heat exchange before returning to the lubricating oil tank 41.

[0174] In one embodiment, reference is made to Figure 13 The lubricating oil cooling circulation system 40 also includes an oil filter 42 and a first three-way valve 43 for lubricating oil cooling.

[0175] The lubricating oil filter 42 is installed on the pipeline between the lubricating oil outlet of the lubricating oil tank 41 and the heat dissipation inlet of the bearing 211 and the heat dissipation inlet of the bearing of the output motor 22. That is, the lubricating oil filter 42 is installed on the pipeline between the lubricating oil outlet of the lubricating oil tank 41 and the hybrid power system. The pressure sensor 44 and the pressure sensor 45 for lubricating oil heat dissipation are respectively installed on the pipelines on both sides of the lubricating oil filter 42.

[0176] The inlet of the first three-way valve 43 for lubricating oil cooling is connected to the lubricating oil outlet of the lubricating oil tank 41 through a pipeline. One outlet of the first three-way valve 43 for lubricating oil cooling is connected to the lubricating oil filter 42 through a pipeline, and the other outlet of the first three-way valve 43 for lubricating oil cooling is connected to the lubricating oil inlet of the lubricating oil tank 41 through a pipeline.

[0177] The pressure information on both sides of the lubricating oil filter 42 is detected by the pressure sensors 44 and 45 for lubricating oil cooling. When the pressure difference on both sides of the lubricating oil filter 42 is greater than the preset pressure difference for lubricating oil cooling, the pipeline between the lubricating oil outlet of the lubricating oil tank 41 and the lubricating oil filter 42 is disconnected by the first three-way valve 43 for lubricating oil cooling, and the pipeline between the lubricating oil outlet and the lubricating oil inlet of the lubricating oil tank 41 is connected. When the pressure difference on both sides of the lubricating oil filter 42 is not greater than the preset pressure difference for lubricating oil cooling, the pipeline between the lubricating oil outlet and the lubricating oil inlet of the lubricating oil tank 41 is disconnected by the first three-way valve 43 for lubricating oil cooling, and the pipeline between the lubricating oil outlet and the lubricating oil filter 42 is connected.

[0178] In this embodiment, when an abnormal pressure difference occurs in the oil filter 42, the pipeline between the oil outlet and the oil inlet of the oil tank 41 is opened via the first three-way valve 43 for oil cooling, allowing the oil flowing out of the oil outlet of the oil tank 41 to return to the oil tank 41 through the oil inlet. When the pressure difference across the oil filter 42 is within normal limits, the oil flowing out of the oil outlet of the oil tank 41 continues to flow downwards, entering the cooling inlet of the bearing 211 to cool the engine bearing 211.

[0179] In one embodiment, the mesh size of the oil filter 42 is 200 to 300 mesh.

[0180] In one embodiment, an alarm is triggered when the pressure difference across the oil filter 42 exceeds a preset pressure difference for oil cooling.

[0181] In one embodiment, the temperature of the lubricating oil in the pipeline between the lubricating oil outlet of the lubricating oil tank 41 and the heat dissipation inlet of the bearing 211 is detected. When the temperature is higher than the preset temperature for lubricating oil heat dissipation, the lubricating oil flowing out of the lubricating oil outlet of the lubricating oil tank 41 directly enters the heat dissipation inlet of the bearing 211 to dissipate heat from the bearing 211. When the temperature is not higher than the preset temperature for lubricating oil heat dissipation, part of the lubricating oil flowing out of the lubricating oil outlet of the lubricating oil tank 41 enters the motor controller 23 to dissipate heat from the motor controller 23. After the heated lubricating oil is cooled by at least one of the lubricating oil heat exchange system 60 and the air-cooled heat dissipation system 70, it returns to the lubricating oil tank 41.

[0182] In this embodiment, the preset temperature for lubricating oil cooling is a pre-set temperature, such as 30 degrees Celsius. Of course, it can also be adjusted according to the actual implementation scenario.

[0183] In this embodiment, the lubricating oil temperature is compared with the preset temperature for lubricating oil heat dissipation to determine whether the lubricating oil flows to the bearing 211 for heat dissipation or to the motor controller 23 for heat dissipation.

[0184] A preferred pipeline connection scheme for implementing this embodiment is as follows:

[0185] Reference Figure 13 The lubricating oil cooling circulation system 40 also includes a second three-way valve 46 for lubricating oil cooling. The inlet of the second three-way valve 46 for lubricating oil cooling is connected to the lubricating oil outlet of the lubricating oil tank 41 through a pipeline. One outlet of the second three-way valve 46 for lubricating oil cooling is connected to the cooling inlet of the bearing 211 through a pipeline. The other outlet of the second three-way valve 46 for lubricating oil cooling is connected to the lubricating oil cooling inlet of the motor controller 23 through a pipeline. The lubricating oil cooling outlet of the motor controller 23 is connected to the lubricating oil return port of the lubricating oil tank 41 through a pipeline via at least one of the lubricating oil heat exchange system 60 and the air-cooled cooling system 70.

[0186] A first temperature sensor for oil cooling is installed on the pipeline between the oil outlet of the oil tank 41 and the second three-way valve 46 for oil cooling. When the temperature detected by the first temperature sensor for oil cooling is higher than the preset temperature for oil cooling, the pipeline between the oil outlet of the oil tank 41 and the oil cooling inlet of the motor controller 23 is disconnected through the second three-way valve 46, and the pipeline between the oil outlet of the oil tank 41 and the cooling inlet of the bearing 211 is connected. When the temperature of the first temperature sensor for oil cooling is not higher than the preset temperature for oil cooling, the pipeline between the oil outlet of the oil tank 41 and the cooling inlet of the bearing 211 is connected. When the preset temperature is reached, the pipeline between the oil outlet of the oil tank 41 and the heat dissipation inlet of the bearing 211 is disconnected through the second three-way valve 46 for oil cooling within a preset time period, and the pipeline between the oil outlet of the oil tank 41 and the heat dissipation inlet of the motor controller 23 is connected. After the preset time period, the pipeline between the oil outlet of the oil tank 41 and the heat dissipation inlet of the motor controller 23 is disconnected again through the second three-way valve 46 for oil cooling, and the pipeline between the oil outlet of the oil tank 41 and the heat dissipation inlet of the bearing 211 is connected.

[0187] In this embodiment, the temperature monitored in real time by the first temperature sensor for lubricating oil cooling is compared with the preset temperature for lubricating oil cooling. Only when the temperature is not higher than the preset temperature for lubricating oil cooling can a portion of the lubricating oil enter the motor controller 23 to cool the motor controller 23. The lubricating oil that has been heated after being cooled by the motor controller 23 is also cooled down through the pipeline by air cooling or lubricating oil heat exchange and then returned to the lubricating oil tank 41.

[0188] In one embodiment, when an oil filter 42 is installed on the pipeline between the oil outlet of the oil tank 41 and the heat dissipation inlet of the bearing 211, a second three-way valve 46 for oil cooling is installed on the pipeline between the oil filter 42 and the heat dissipation inlet of the bearing 211. That is, the inlet of the second three-way valve 46 for oil cooling is connected to the outlet of the oil filter 42 through a pipeline.

[0189] In one embodiment, reference is made to Figure 13The lubricating oil cooling circulation system 40 also includes a third three-way valve 47 and a fourth three-way valve 48 for lubricating oil cooling.

[0190] The inlet of the third three-way valve 47 for lubricating oil cooling is connected to the heat dissipation outlet of bearing 211 and the lubricating oil cooling outlet of motor controller 23 through pipelines. One outlet of the third three-way valve 47 for lubricating oil cooling is connected to the lubricating oil inlet of lubricating oil heat exchange system 60 through pipelines, and the other outlet of the third three-way valve 47 for lubricating oil cooling is connected to the inlet of air-cooled heat dissipation system 70 through pipelines.

[0191] One inlet of the fourth three-way valve 48 for lubricating oil cooling is connected to the lubricating oil outlet of the lubricating oil heat exchange system 60 via a pipeline, and the other inlet of the fourth three-way valve 48 for lubricating oil cooling is connected to the outlet of the air-cooled heat dissipation system 70 via a pipeline. The outlet of the fourth three-way valve 48 for lubricating oil cooling is connected to the lubricating oil return port of the lubricating oil tank 41 via a pipeline.

[0192] In this embodiment, the design of the third three-way valve 47 and the fourth three-way valve 48 for lubricating oil cooling allows the lubricating oil flowing from the heat dissipation outlet of the bearing 211 or the lubricating oil cooling outlet of the motor controller 23 to be cooled by either air cooling or fuel-cooled lubricating oil cooling before flowing back to the lubricating oil tank 41.

[0193] In one embodiment, reference is made to Figure 13 The lubricating oil cooling circulation system 40 also includes a fifth three-way valve 49 for lubricating oil cooling. One inlet of the fifth three-way valve 49 is connected to the cooling outlet of the bearing 211 through a pipeline. The other inlet of the fifth three-way valve 49 is connected to the lubricating oil cooling outlet of the motor controller 23 through a pipeline. The outlet of the fifth three-way valve 49 is connected to a third three-way valve 47 for lubricating oil cooling through a pipeline. The fifth three-way valve 49 for lubricating oil cooling is linked with the second three-way valve 46 for lubricating oil cooling.

[0194] In other words, when the second three-way valve 46 for lubricating oil cooling connects the lubricating oil outlet of the lubricating oil tank 41 to the heat dissipation inlet of the bearing 211, the fifth three-way valve 49 for lubricating oil cooling connects the lubricating oil outlet of the bearing 211 to the third three-way valve 47 for lubricating oil cooling for air cooling or fuel-cooled lubricating oil cooling before returning to the lubricating oil tank 41. When the second three-way valve 46 for lubricating oil cooling connects the lubricating oil outlet of the lubricating oil tank 41 to the lubricating oil heat dissipation inlet of the motor controller 23, the fifth three-way valve 49 for lubricating oil cooling connects the lubricating oil outlet of the motor controller 23 to the third three-way valve 47 for lubricating oil cooling for air cooling or fuel-cooled lubricating oil cooling before returning to the lubricating oil tank 41.

[0195] In one embodiment, one or more temperature sensors, one or more pressure sensors, one or more lubricating oil flow meters, one or more metal detectors, etc., can be installed on the entire system pipeline of the lubricating oil cooling circulation system 40 according to actual needs, so as to monitor the temperature, pressure, flow rate or metal shavings content at each preset monitoring point on the system pipeline.

[0196] In one embodiment, reference is made to Figure 13 The lubricating oil cooling circulation system 40 also includes at least one of a level gauge 413, an exhaust pipe 414, and an oil drain valve 415.

[0197] The lubricating oil level in the lubricating oil tank 41 is monitored by the level gauge 412. The lubricating oil tank 41 is vented through the vent pipe 414. The lubricating oil in the lubricating oil tank 41 is drained through the drain valve 415. Therefore, the drain valve 415 is preferably located at the lower part or bottom of the lubricating oil tank 41.

[0198] In one embodiment, reference is made to Figure 13 The lubricating oil outlet of the lubricating oil tank 41 is equipped with a pipe joint 416 with a filter screen to facilitate pre-filtration of the outflowing lubricating oil.

[0199] In one embodiment, reference is made to Figure 13 The lubricating oil return port of the lubricating oil tank 41 is equipped with a static pressure oil-gas separator 417, which is located inside the lubricating oil tank 41.

[0200] In one embodiment, the oil tank 41 is a 60L capacity oil tank.

[0201] In one embodiment, reference is made to Figure 13 The fuel system 50 includes a fuel tank 51, and the fuel outlet of the fuel tank 51 is connected to the fuel inlet of the engine 21 via a pipeline.

[0202] In one embodiment, reference is made to Figure 13 The fuel system 50 also includes a fuel filter 52 and a first three-way valve 53 for the fuel system.

[0203] The fuel filter 52 is installed on the pipeline between the fuel outlet of the fuel tank 51 and the fuel inlet of the engine 21. A fuel system pressure sensor 54 and a fuel system pressure sensor 55 are respectively installed on the pipelines on both sides of the fuel filter 52.

[0204] The inlet of the first three-way valve 53 of the fuel system is connected to the fuel outlet of the fuel tank 51 through a pipeline. One outlet of the first three-way valve 53 of the fuel system is connected to the fuel filter 52 through a pipeline, and the other outlet of the first three-way valve 53 of the fuel system is connected to the fuel inlet of the fuel tank 51 through a pipeline.

[0205] The pressure information on both sides of the fuel filter 52 is detected by the fuel system pressure sensor 54 and the fuel system pressure sensor 55. When the pressure difference on both sides of the fuel filter 52 is greater than the preset pressure difference of the fuel system, the pipeline between the fuel outlet of the fuel tank 51 and the fuel filter 52 is disconnected by the first three-way valve 53 of the fuel system, and the pipeline between the fuel outlet of the fuel tank 51 and the fuel inlet of the fuel tank 51 is connected. When the pressure difference on both sides of the fuel filter 52 is not greater than the preset pressure difference of the fuel system, the pipeline between the fuel outlet of the fuel tank 51 and the fuel inlet of the fuel tank 51 is disconnected by the first three-way valve 53 of the fuel system, and the pipeline between the fuel outlet of the fuel tank 51 and the fuel filter 52 is connected.

[0206] In this embodiment, when an abnormal pressure difference occurs in the fuel filter 52, the pipeline between the fuel outlet and fuel inlet of the fuel tank 51 is opened via the first three-way valve 53 in the fuel system, allowing the fuel flowing out of the fuel outlet of the fuel tank 51 to return to the fuel tank 51 through the fuel inlet. When the pressure difference across the fuel filter 52 is within normal limits, the fuel flowing out of the fuel outlet of the fuel tank 51 continues to flow downwards, thus entering the generator 21 for combustion.

[0207] In one embodiment, the temperature of the fuel in the pipeline between the fuel outlet of the fuel tank 51 and the fuel inlet of the engine 21 is detected. When the temperature meets the preset combustion temperature, the fuel flowing out of the fuel outlet of the fuel tank 51 is directly supplied to the engine 21 for combustion. When the temperature does not meet the preset combustion temperature, the fuel flowing out of the fuel outlet of the fuel tank 51 passes through the lubricating oil heat exchange system 60 to cool the lubricating oil in order to raise the temperature of the fuel. The heated fuel is then supplied to the engine 21 for combustion.

[0208] In this embodiment, the preset combustion temperature is the pre-set combustion temperature at engine ignition. Of course, it can also be adjusted according to the actual implementation scenario.

[0209] In this embodiment, the fuel temperature is compared with the preset combustion temperature to determine whether the fuel temperature meets the requirements for direct combustion. If it does not meet the requirements, the fuel enters the lubricating oil heat exchange system 60 to raise the fuel temperature.

[0210] A preferred pipeline connection scheme for implementing this embodiment is as follows:

[0211] Reference Figure 13The fuel system 50 also includes a second three-way valve 56 for the fuel system. The inlet of the second three-way valve 56 for the fuel system is connected to the fuel outlet of the fuel tank 51 through a pipeline. One outlet of the second three-way valve 56 for the fuel system is connected to the fuel inlet of the engine 21 through a pipeline. The other outlet of the second three-way valve 56 for the fuel system is connected to the fuel inlet of the fuel-lubricating oil heat exchange system 60. The fuel outlet of the fuel-lubricating oil heat exchange system 60 is connected to the fuel inlet of the engine 21 through a pipeline.

[0212] A first temperature sensor for the fuel system is installed on the pipeline between the fuel outlet of the fuel tank 51 and the second three-way valve 56 for the fuel system. When the temperature detected by the first temperature sensor for the fuel system does not meet (i.e. is lower than) the preset combustion temperature, the pipeline between the fuel outlet of the fuel tank 51 and the fuel inlet of the engine 21 is disconnected through the second three-way valve 56 for the fuel system, and the pipeline between the fuel outlet of the fuel tank 51 and the fuel inlet of the fuel-lubricating oil heat exchange system 60 is connected. When the temperature detected by the first temperature sensor for the fuel system meets (i.e. is not lower than) the preset combustion temperature, the pipeline between the fuel outlet of the fuel tank 51 and the fuel inlet of the fuel-lubricating oil heat exchange system 60 is disconnected through the second three-way valve 56 for the fuel system, and the pipeline between the fuel outlet of the fuel tank 51 and the fuel inlet of the engine 21 is connected.

[0213] In this embodiment, the temperature obtained by the fuel system in real time by the first temperature sensor is compared with the preset combustion temperature. Only when the temperature is lower than the preset combustion temperature, the fuel flowing out of the fuel outlet of the fuel tank 51 is heated by the lubricating oil heat exchange system 60 before being supplied to the engine 21 for combustion.

[0214] In one embodiment, when a fuel filter 52 is installed on the pipeline between the fuel outlet of the fuel tank 51 and the fuel inlet of the engine 21, a second three-way valve 56 for the fuel system is installed on the pipeline between the fuel filter 52 and the fuel inlet of the engine 21. That is, the inlet of the second three-way valve 56 for the fuel system is connected to the outlet of the fuel filter 52 through a pipeline.

[0215] In one embodiment, when the temperature does not meet the preset combustion temperature and is lower than the preset temperature for the fuel system, the fuel flowing out of the fuel outlet of the fuel tank 51 exchanges heat with the motor controller 23, and then cools the lubricating oil through the fuel-lubricating oil heat exchange system 60 to achieve fuel heating. The heated fuel is then supplied to the engine 21 for combustion. When the temperature does not meet the preset combustion temperature but is not lower than the preset temperature for the fuel system, the fuel flowing out of the fuel outlet of the fuel tank 51 cools the lubricating oil through the fuel-lubricating oil heat exchange system 60 to achieve fuel heating. The heated fuel is then supplied to the engine 21 for combustion.

[0216] In this embodiment, when the fuel temperature does not meet the preset combustion temperature, the fuel temperature is compared with the preset temperature of the fuel system. When the fuel temperature is lower than the preset temperature of the fuel system, the fuel flowing from the fuel outlet of the fuel tank 51 flows into the motor controller 23 to cool the motor controller 23 and thus raise the fuel temperature. The heated fuel then passes through the lubricating oil heat exchange system 60 for further heating before being supplied to the engine 21 for combustion. When the fuel temperature is not lower than the preset temperature of the fuel system, the fuel flowing from the fuel outlet of the fuel tank 51 still needs to pass through the lubricating oil heat exchange system 60 for further heating before being supplied to the engine 21 for combustion because it does not reach the combustion temperature.

[0217] A preferred pipeline connection scheme for implementing this embodiment is as follows:

[0218] Reference Figure 13 The fuel system 50 also includes a third three-way valve 57 and a fourth three-way valve 58 for the fuel system.

[0219] The inlet of the third three-way valve 57 for the fuel system is connected to the fuel outlet of the fuel tank 51 through a pipeline. One outlet of the third three-way valve 57 for the fuel system is connected to the second three-way valve 56 for the fuel system through a pipeline. The other outlet of the third three-way valve 57 for the fuel system is connected to the fuel cooling inlet of the motor controller 23 through a pipeline.

[0220] One inlet of the fourth three-way valve 58 for the fuel system is connected to the second three-way valve 56 for the fuel system via a pipeline. The other inlet of the fourth three-way valve 58 for the fuel system is connected to the fuel cooling outlet of the motor controller 23 and the fuel outlet of the fuel-lubricating oil heat exchange system 60 via pipelines. The outlet of the fourth three-way valve 58 for the fuel system is connected to the fuel inlet of the engine 21 via a pipeline. The fourth three-way valve 58 for the fuel system is linked with the second three-way valve 56 and the third three-way valve 57 for the fuel system.

[0221] When the temperature monitored by the first temperature sensor of the fuel system does not meet the preset combustion temperature and is lower than the preset temperature of the fuel system, the pipeline between the fuel outlet of the fuel tank 51 and the second three-way valve 56 of the fuel system is disconnected through the third three-way valve 57 of the fuel system, and the pipeline between the fuel outlet of the fuel tank 51 and the fuel cooling inlet of the motor controller 23 is connected. The pipeline between the fuel inlet of the engine 21 and the fuel cooling outlet of the motor controller 23 and the fuel outlet of the fuel-lubricating oil heat exchange system 60 is disconnected through the fourth three-way valve 58 of the fuel system, and the pipeline between the second three-way valve 56 of the fuel system and the fuel inlet of the engine 21 is connected.

[0222] In other words, when fuel is introduced into the motor controller 23 via the third three-way valve 57 through the fuel system for heating, such as Figure 13As shown by the dashed arrow, the passage between the motor controller 23 and the fuel inlet of the engine 21 is disconnected by the fourth three-way valve 58 of the fuel system, and the passage between the second three-way valve 56 of the fuel system and the fuel inlet of the engine 21 is connected by the fourth three-way valve 58 of the fuel system, so that the fuel is heated by the lubricating oil heat exchange system 60 before being supplied to the engine 21 for combustion.

[0223] When the temperature monitored by the first temperature sensor of the fuel system does not meet the preset combustion temperature but is not lower than the preset temperature of the fuel system, the pipeline between the fuel outlet of the fuel tank 51 and the fuel cooling inlet of the motor controller 23 is disconnected through the third three-way valve 57 of the fuel system, and the pipeline between the fuel outlet of the fuel tank 51 and the second three-way valve 56 of the fuel system is connected. The pipeline between the fuel outlet of the fuel tank 51 and the fourth three-way valve 58 of the fuel system is disconnected through the second three-way valve 56 of the fuel system, and the pipeline between the fuel outlet of the fuel tank 51 and the fuel inlet of the fuel-lubricating oil heat exchange system 60 is connected. The pipeline between the second three-way valve 56 of the fuel system and the fuel inlet of the engine 21 is disconnected through the fourth three-way valve 58 of the fuel system, and the pipeline between the fuel outlet of the fuel-lubricating oil heat exchange system 60 and the fuel inlet of the engine 21 is connected. In other words, the fuel flowing out of the fuel outlet of the fuel tank 51 is heated by the fuel-lubricating oil heat exchange system 60 before being supplied to the engine 21 for combustion.

[0224] When the temperature monitored by the first temperature sensor in the fuel system meets the preset combustion temperature, the pipeline between the fuel outlet of the fuel tank 51 and the fuel cooling inlet of the motor controller 23 is disconnected via the third three-way valve 57 of the fuel system, and the pipeline between the fuel outlet of the fuel tank 51 and the second three-way valve 56 of the fuel system is connected. The pipeline between the fuel outlet of the fuel tank 51 and the fuel inlet of the lubricating oil heat exchange system 60 is disconnected via the second three-way valve 56 of the fuel system, and the pipeline between the fuel outlet of the fuel tank 51 and the fourth three-way valve 58 of the fuel system is connected. The pipeline between the fuel cooling outlet of the motor controller 23, the fuel outlet of the lubricating oil heat exchange system 60, and the fuel inlet of the engine 21 is disconnected via the fourth three-way valve 58 of the fuel system, and the pipeline between the second three-way valve 56 of the fuel system and the fuel inlet of the engine 21 is connected. In other words, the fuel flowing from the fuel outlet of the fuel tank 51 is directly supplied to the engine 21 for combustion.

[0225] In this embodiment, the fuel system uses a preset temperature, such as 30 degrees Celsius. Of course, this can be adjusted according to the actual implementation scenario.

[0226] In one embodiment, when a fuel filter 52 is installed on the pipeline between the fuel outlet of the fuel tank 51 and the fuel inlet of the engine 21, the fuel filter 52 is installed on the pipeline between the fuel outlet of the fuel tank 51 and the third three-way valve 57 for the fuel system. That is, the inlet of the third three-way valve 57 for the fuel system is connected to the outlet of the fuel filter 52 through a pipeline.

[0227] In one embodiment, one or more temperature sensors and one or more pressure sensors can be installed on the entire system pipeline of the fuel system 50 according to actual needs, so as to monitor the temperature or pressure at each preset monitoring point on the system pipeline.

[0228] In one embodiment, reference is made to Figure 13 The fuel system 50 also includes at least one of a level gauge 59, an exhaust pipe 510, and a drain valve 511.

[0229] The fuel level in the fuel tank 51 is monitored by the level gauge 59. The fuel tank 51 is vented through the vent pipe 510. Lubricating oil is drained from the fuel tank 51 through the drain valve 511. Therefore, the drain valve 511 is preferably located at the bottom or lower part of the fuel tank 51.

[0230] In one embodiment, the thermal balance system further includes a monitoring system for monitoring the operation of the thermal balance system. The monitoring system includes at least one of the following sensors installed at preset locations: a flow meter, a flow regulating valve, a temperature sensor, a pressure sensor, a flow sensor, a speed sensor, and a metal chip detector. The monitoring system compares the sensor information collected in real time with a preset range, and alarms or controls are triggered when the preset range is exceeded.

[0231] The function of the monitoring system (also known as the monitoring and measurement system) is to collect and analyze important engine status parameters in order to achieve engine fault diagnosis and status monitoring, ensure engine operation safety and implement health management.

[0232] In one embodiment, the control module further includes an electronic controller and a powertrain controller that are interconnected.

[0233] Each sensor in the monitoring system is connected to the electronic controller. The electronic controller compares the real-time sensor data with the preset range. When the preset range is exceeded, the powertrain controller exchanges data with the client through the CAN and RS232 communication buses. The powertrain controller then sends an alarm signal to the client's alarm system through the output alarm circuit.

[0234] In one embodiment, the monitoring system can be used for over-temperature and over-speed monitoring:

[0235] The hybrid system also includes interconnected electronic controllers and powertrain controllers.

[0236] The monitoring system includes a speed sensor and an exhaust temperature sensor. The speed sensor measures the engine speed of engine 21 and transmits the speed to the electronic controller. The exhaust temperature sensor measures the exhaust temperature of engine 21 and transmits the exhaust temperature value to the electronic controller. The electronic controller compares the real-time collected speed and exhaust temperature values ​​with preset alarm limit values ​​and shutdown protection limit values ​​to determine the operating status of engine 21.

[0237] When at least one of the speed and exhaust temperature values ​​exceeds the preset alarm limit, the powertrain controller transmits the fault status information to the client's storage display and alarm system, and issues an alarm signal.

[0238] When at least one of the speed and exhaust temperature values ​​exceeds the preset stop protection limit, the powertrain controller issues an alarm signal, and at the same time the electronic controller executes interlock stop protection control, and the engine 21 stops.

[0239] In this embodiment, both the alarm limit value and the parking protection limit value are preset limit values, and multiple limit values ​​are set according to the number of monitored parameters. For example, in this embodiment, the alarm limit value includes the speed alarm limit value and the exhaust temperature alarm limit value, and the parking protection limit value includes the speed parking protection limit value and the exhaust temperature parking protection limit value. When comparing parameters, they are compared separately. For example, the real-time collected speed is compared with the speed alarm limit value to determine whether the real-time collected speed exceeds the speed alarm limit value; the real-time collected exhaust temperature value is compared with the exhaust temperature alarm limit value to determine whether the real-time collected exhaust temperature value exceeds the exhaust temperature alarm limit value.

[0240] In one embodiment, the monitoring system can be used for lubricating oil system fault monitoring:

[0241] The hybrid system also includes interconnected electronic controllers and powertrain controllers.

[0242] The lubricating oil cooling circulation system 40 includes an oil tank 41. The lubricating oil outlet of the oil tank 41 is connected to the cooling inlet of the engine 21 bearing 211 via a pipeline through an oil pump and an oil filter component 410.

[0243] The monitoring system includes three lubricating oil pressure sensors, a lubricating oil temperature sensor 411, and a metal shavings detector 412. The three lubricating oil pressure sensors measure the lubricating oil pressure after the lubricating oil pump, the lubricating oil pressure after the lubricating oil filter, and the lubricating oil pressure at the inlet of the engine 21 reducer, respectively, and transmit the three lubricating oil pressure values ​​to the electronic controller. The lubricating oil temperature sensor 411 measures the lubricating oil temperature in the lubricating oil tank 41 and transmits the lubricating oil temperature value to the electronic controller. The metal shavings detector 412 detects metal shavings in the return oil of the lubricating oil tank 41 and transmits the detection result to the electronic controller. The electronic controller determines the detection result and compares the real-time collected lubricating oil pressure and lubricating oil temperature values ​​with preset alarm limit values ​​to achieve status monitoring of the lubricating oil system.

[0244] When at least one of the lubricating oil pressure value or lubricating oil temperature value exceeds the preset alarm limit or the detection result is in a conducting state, the powertrain controller transmits the fault status information to the client's storage display and alarm system and issues an alarm signal.

[0245] In this embodiment, the lubricating oil filter component 410 is preferably integrated into the engine 21.

[0246] In one embodiment, the monitoring system can be used for fuel system fault monitoring:

[0247] The hybrid system also includes interconnected electronic controllers and powertrain controllers.

[0248] Engine 21 has a main oil circuit and a starting oil circuit. A main fuel pump is installed on the main oil circuit, and a starting fuel pump is installed on the starting oil circuit.

[0249] The monitoring system includes a main fuel pressure switch installed on the main fuel line and a starter fuel pressure switch installed on the starter fuel line. The electronic controller monitors the on / off status of the main fuel pressure switch and the starter fuel pressure switch to monitor the operation of the main fuel pump and the starter fuel pump.

[0250] When the main fuel pressure switch or the start fuel pressure switch is in the ON position, the corresponding fuel pump is considered to be faulty, and the powertrain controller transmits the fault status information to the client's storage, display and alarm system.

[0251] When only one of the main fuel pump and the starter fuel pump fails, the electronic controller switches to single-pump fuel supply control mode. When both the main fuel pump and the starter fuel pump fail simultaneously, the electronic controller executes the interlocking shutdown protection control logic, and the engine 21 stops.

[0252] This invention also provides a testing method using the thermal balance management testing system or thermal balance system provided in the above embodiments of this invention. The thermal balance management testing system or thermal balance system is preferably installed on the test bench provided in the above embodiments of this invention. The testing method includes:

[0253] S1. Design a test platform that meets simulation requirements. Each pipeline in the test platform has pre-set key nodes and corresponding sensors installed before and after the pump. These sensors are at least one of the following: flow meter, pressure sensor, temperature sensor, and flow regulating valve. This facilitates flow monitoring, temperature control, and flow regulation at each pipeline node during testing.

[0254] Specifically, this step includes:

[0255] S11. For heat-generating equipment including engines, output motors, and motor controllers, based on working conditions including operating temperature and pressure, and the structural characteristics of each heat-generating device, simulation analysis is conducted to select different cooling media for simulation testing. The flow rate, inlet temperature, and outlet temperature of the cooling media are set in the simulation software to obtain a cooling scheme that meets the operating temperature and pressure of the equipment. Specifically, the simulation aims to determine the following parameters: the flow rate, inlet temperature, and outlet temperature of the cooling media required for the heat-generating equipment to operate under specified working conditions.

[0256] S12. Based on the simulation scheme, according to the preset thermal management system test scheme, and combined with the parameters in the actual test pipeline network, including pressure, pressure drop, and fuel temperature and pressure required for engine combustion, a test platform that can meet the simulation requirements is designed.

[0257] Preferably, to facilitate adjustments for actual use, the test platform amplifies the simulation scheme, for example, by increasing the flow rate into the corresponding device and reducing the temperature of the device entering the device and the temperature of the output device.

[0258] S2, in the initial stage, a primary functional system is used to conduct a primary thermal balance test. The cooling medium output and return containers and pipelines of the test platform are enlarged to several times the conventional size (for example, the lubricating oil tank and its output flow are enlarged by 10 times) to ensure sufficient redundancy during the test, so that it can be flexibly adjusted. At this time, the motor controller, electronic controller and powertrain controller are all placed separately. A corresponding cooling scheme is formulated for the motor controller (the main heat-generating component) to optimize its working environment in the system.

[0259] During this stage, flow meters, temperature sensors, flow regulating valves, and other testing or regulating devices are installed at each pipeline node of each medium and before and after the pump on the test platform. This facilitates flow monitoring, pressure and temperature monitoring, and flow regulation at each pipeline node during the test. Based on the final test, parameters such as the inlet medium flow rate, input and output pressure, and input and output temperature that meet the actual requirements for the equipment's operating conditions are obtained.

[0260] At this stage, industrial-grade pumps are used, without considering size or long-term operation, with the primary goal of obtaining preliminary test data in a short period of time.

[0261] S3. Based on the initial test results, determine the parameters such as medium flow rate and inlet / outlet temperature that meet the actual working conditions, and select pumps that can achieve each parameter. Then, conduct a second test by adjusting the speed of each pump.

[0262] At this stage, the pump is upgraded to a more suitable model by reducing unnecessary testing or adjustment devices in the pipeline. This allows for subsequent testing by adjusting the pump speed, resulting in a more accurate solution.

[0263] S4. Based on the results of the retest, the size of each controller in the control module will be gradually reduced and integrated into the motor. A secondary functional system will be used for secondary thermal balance testing. The media volume of the oil tank, various heat exchange equipment, and the output and return media will be reduced several times compared to the primary functional system and integrated onto the top surface of the test bench, thus creating a more miniaturized and highly integrated system. Simultaneously, each control pump can be further upgraded to a more advanced model, and adjustments will continue to be made to the existing testing scheme to better suit the structural requirements of the actual product.

[0264] In the Level 2 test, the control module includes any one or more combinations of motor controllers, electronic controllers, powertrain controllers, and power management controllers.

[0265] By progressively optimizing and integrating the testing scheme through the above steps, a thermal management solution that meets the temperature and pressure requirements for the operation of each component in a thermal balance system can be determined through simulation testing at a lower cost. Subsequently, the system is gradually replaced with precise, smaller devices, and the various components are integrated for more accurate testing. This approach reduces overall testing costs, and the initial testing system can adapt to various hybrid power structures, allowing for flexible adjustments. The entire testing scheme also allows for independent exploration of the parameters of individual devices, enabling more precise and effective configuration and adjustment of subsequent miniaturization and integration solutions, reducing unnecessary waste and investment in later testing stages.

[0266] The preferred embodiments of the present invention have been described in detail above. However, it should be understood that after reading the above teachings, those skilled in the art can make various alterations or modifications to the present invention. These equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A test bench, characterized in that, The test bench includes: The frame is equipped with casters and feet at its bottom, and an extension platform is provided around the frame. The extension platform is configured to house a primary functional system for a primary test thermal balance management system. The main platform is located at the top of the frame and is used to house the hybrid power system and control module. The hybrid power system includes an engine and an output motor that drives the output motor to generate electrical energy. The control module includes a motor controller for the output motor. The primary functional system includes a water cooling circulation system, an oil cooling circulation system, a fuel system, a fuel-oil heat exchange system, and an air cooling system; the water cooling circulation system is located on the front extension platform, the oil cooling circulation system is located on the left extension platform, the fuel system is located on the right extension platform, and the fuel-oil heat exchange system and the air cooling system are located on the rear extension platform; the control module also includes the engine's electronic controller and powertrain controller; the engine's exhaust port is located on the front; The main platform also has a secondary functional system for laying out the subsequent test thermal balance management system. At this time, the control module is a control module for the motor that integrates each controller into the motor with a smaller size than the primary functional system. By switching the pipeline, the hybrid power system and the smaller motor controller are switched from being connected to the primary functional system to being connected to the secondary functional system. During the thermal balance test, in the initial stage, a primary functional system is used to conduct a primary thermal balance test. Based on the initial test results, the parameters that meet the actual working conditions are determined, and pumps that can achieve each parameter are selected. The pump speeds are adjusted to conduct a second test. Based on the results of the second test, the size of each controller included in the control module is gradually reduced and integrated into the motor. A secondary functional system is then used to conduct a secondary thermal balance test.

2. The test bench as described in claim 1, characterized in that, The frame is constructed using square steel or aluminum profiles. And / or, the frame is provided with connecting plates on its four sides, the connecting plates are located on the side above the extension platform, and the connecting plates are used to arrange the pipelines between the primary functional system and the hybrid power system and motor controller; And / or the casters are heavy-duty casters; And / or, the hoof is a heavy-duty hoof; And / or, the hoof is a rotatable hoof.

3. The test bench as described in claim 2, characterized in that, The connecting plate is an aluminum plate.

4. The test bench as described in claim 1, characterized in that, The main platform is constructed using square steel or aluminum profile frames; And / or, the main platform is a cast iron platform; And / or, the main platform is provided with one or more parallel connecting slots.

5. The test bench as described in claim 1, characterized in that, The overall length and width of the test bench are 1200mm. 1000mm, the overall height of the test bench is 1200mm; And / or, the overall length, width and height of the main platform are 1200mm. 1000mm 200mm; And / or, the main platform shall bear a load of not less than 2T per square centimeter.

6. The test bench as described in any one of claims 1 to 5, characterized in that, The test bench also includes: A connecting frame is used to support and fix the hybrid power system, and the connecting frame is detachably connected to the main platform.

7. The test bench as described in claim 6, characterized in that, The connecting frame includes: A base plate, which is detachably connected to the main platform; Two main brackets are symmetrically connected to the base plate by fasteners, and the main brackets are connected to the engine of the hybrid power system by fasteners.

8. The test bench as described in claim 7, characterized in that, There is a preset distance between the two main supports; And / or, the connecting frame further includes: a reinforcing plate, the two ends of which are respectively connected to the two main supports; And / or, the connecting frame further includes: at least two reinforcing ribs, at least one of the reinforcing ribs being connected to the base plate and one of the main supports respectively, and at least another reinforcing rib being connected to the base plate and another of the main supports respectively; And / or, the top surface of the main support is an arc-shaped surface for mating with the outer peripheral surface of the engine.

9. The test bench as described in claim 7, characterized in that, When the main platform is provided with a connecting groove and the connecting groove is an inverted T-shaped groove, the base plate is locked to the main platform by bolts and T-nuts, and the T-nuts are placed upside down in the connecting groove.

10. The test bench as described in claim 1, characterized in that, The secondary functional system includes some or all of the functional components of the primary functional system, which are scaled down several times.

11. The test bench as described in claim 10, characterized in that, The control module corresponding to the secondary functional system includes a combination of any one or more of the following controllers: motor controller, electronic controller, powertrain controller, and power management controller.

12. A thermal balance management testing system, characterized in that, include: The primary functional system, hybrid power system, and control module are arranged on the test bench according to any one of claims 1-11, wherein, The primary functional system is used for primary test thermal balance management system testing and is located on the extension platform of the test bench; The hybrid power system includes an engine and an output motor that drives the output motor to generate electrical energy. The control module includes a motor controller for the output motor. The hybrid power system and the motor controller are located on the main platform of the test bench. The thermal balance management test system also includes a secondary functional system for subsequent thermal balance management tests. The secondary functional system includes some or all of the functional components of the primary functional system at a scaled-down ratio, and the secondary functional system is integrated around the hybrid power system.

13. The thermal balance management test system as described in claim 12, characterized in that, The secondary functional system includes any one or more of the following: a lubricating oil cooling circulation system, a fuel system, a water cooling circulation system, a fuel-lubricating oil heat exchange system, and an air-cooled cooling system, which are scaled down several times compared to the primary functional system. In this case, the volume of each controller in the control module corresponding to the secondary functional system is scaled down compared to the primary functional system and integrated into the output motor.

14. A test method for the thermal balance management test system according to claim 12 or 13, characterized in that, include: Design a test platform that meets simulation requirements. Each pipeline in the test platform is equipped with a corresponding sensor at a preset key node and before and after the pump. The sensor is at least one of a flow meter, a pressure sensor, a temperature sensor, and a flow regulating valve. In the initial stage, a primary functional system is used to conduct a primary thermal balance test. The cooling medium output and return containers and pipelines of the test platform are enlarged by several times the conventional size to ensure sufficient redundancy during the test, so that they can be flexibly adjusted. At this time, the motor controller, electronic controller and powertrain controller are placed separately, and a corresponding cooling scheme is formulated for the motor controller. Based on the initial test results, determine the parameters that meet the actual working conditions, select pumps that can achieve the parameters, and conduct a second test by adjusting the speed of each pump. Based on the results of the retest, the size of each controller in the control module was gradually reduced and integrated into the motor. A two-level functional system was used to conduct a two-level thermal balance test. The flow rate of the lubricating oil tank and various heat exchange equipment was reduced and integrated into the top surface of the test bench, thereby creating an integrated system. At the same time, the models of each pump were adjusted and retested to make them more in line with the structural requirements of the actual product.

15. The test method as described in claim 14, characterized in that, In the Level 2 test, the control module includes any one or more combinations of motor controllers, electronic controllers, powertrain controllers, and power management controllers.

16. The test method as described in claim 14, characterized in that, Design a test platform that meets simulation requirements, including: For heat-generating equipment including engines, output motors, and motor controllers, based on the working conditions including working temperature and working pressure, as well as the structural characteristics of each heat-generating device, simulation analysis is conducted to select different cooling media for simulation testing, and to determine the required cooling media flow rate, inlet temperature, and outlet temperature for the heat-generating equipment to operate under specified working conditions. Based on the pre-set thermal management system test plan, and combined with the parameters in the actual test pipeline network, including pressure, pressure drop, and fuel temperature and pressure required for engine combustion, a test platform that can meet the simulation requirements is designed.

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