Whole vehicle thermal management system of mining dump truck and mining dump truck

Abstract

The invention relates to the technical field of mining equipment, in particular to a whole vehicle thermal management system of a mining dump truck and the mining dump truck. The system comprises a cooling liquid circulation system, an engine low-temperature cold start system, a fuel oil heating system, a retarder oil circulation system, a warm air system, a driving air conditioning system and a parking air conditioning system. The engine low-temperature cold starting system comprises a double-cavity fuel tank and a cooling liquid heater, and the double-cavity fuel tank is communicated with an oil way circulation loop of the cooling liquid heater and a water circulation loop of the fuel heating system. The cooling liquid circulation system exchanges heat with the engine low-temperature cold start system, the fuel oil heating system, the retarder oil circulation system and the warm air system. The heating system exchanges heat with the traveling air-conditioning system; and the driving air-conditioning system exchanges heat with the parking air-conditioning system. The system can meet the application requirements of regions with large temperature differences, and can replace a heat management system which cannot completely adapt to high and low temperature working conditions at present.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mining equipment, in particular to a mining dump truck whole vehicle thermal management system and a mining dump truck. BACKGROUND

[0002] The working conditions in mining areas are harsh, the temperature range in some countries or regions varies greatly, the minimum temperature is as low as minus 35 DEG C, and the maximum temperature is as high as 40 DEG C, so the temperature range is large, and the thermal management system of the mining dump truck is required to be more stringent.

[0003] In the extremely low temperature working condition of minus 35 DEG C, the new energy vehicle model is temporarily not widely used due to the low temperature performance attenuation of the battery, and the fuel vehicle model is the main vehicle model used in the low temperature scene, and the low temperature scene has higher requirements for the whole vehicle thermal management system, including the fuel heating system, the cold start system and the cab insulation system; in the high temperature scene with a temperature of 40 DEG C or above, the whole vehicle thermal management system is faced with the problem of high water temperature of the coolant, and the application of the retarder aggravates the rise of the water temperature, and at the same time, the cab cooling in the parking scene is required.

[0004] At present, the thermal management system of the fuel vehicle model of the mining dump truck only has the system configuration suitable for high temperature and low temperature, and at the same time, the fuel heating system, the cold start system and the cab heating and insulation system are not comprehensively considered in the low temperature scene, and in the high temperature scene, the temperature is not completely controlled in a closed loop. SUMMARY

[0005] The present application relates to the technical field of mining equipment, in particular to a mining dump truck whole vehicle thermal management system and a mining dump truck.

[0006] In the first aspect, the present application provides a whole vehicle thermal management system of a mining dump truck, which comprises a coolant circulation system, an engine low temperature cold start system, a fuel heating system, a retarder oil circulation system, a warm air system, a driving air conditioning system and a parking air conditioning system; The engine low temperature cold start system comprises a double cavity fuel tank and a coolant heater, and the double cavity fuel tank is connected with the oil circulation loop of the coolant heater and the water circulation loop of the fuel heating system respectively; The coolant circulation system can exchange heat with the engine low temperature cold start system, the fuel heating system, the retarder oil circulation system and the warm air system respectively; The warm air system can exchange heat with the driving air conditioning system; The driving air conditioning system can exchange heat with the parking air conditioning system.

[0007] In an optional embodiment, the cooling liquid circulation system comprises a main radiator, a main radiator fan, a first three-way valve, a second three-way valve, a retarder heat exchanger, a water pump and an engine heat exchange cavity; The main radiator fan is arranged on one side of the main radiator and used for radiating the main radiator. The first three-way valve is connected with the water pump, the main radiator and the cooling liquid heater of the engine low-temperature cold start system respectively. The second three-way valve is connected with the cooling liquid heater, the retarder heat exchanger and the outlet of the warm air system. The outlet of the main radiator is connected with the inlet of the warm air system. Another circulation loop in the retarder heat exchanger is connected with the retarder oil circulation system. Another circulation loop of the engine heat exchange cavity is connected with the fuel heating system.

[0008] In an optional embodiment, the cooling liquid circulation system further comprises a secondary radiator and a secondary radiator fan. The secondary radiator is arranged between the second three-way valve and the retarder heat exchanger. The secondary radiator fan is arranged on one side of the secondary radiator and used for radiating the secondary radiator.

[0009] In an optional embodiment, a first one-way valve is arranged between the second three-way valve and the secondary radiator, and used for limiting the liquid to flow from the second three-way valve to the secondary radiator.

[0010] In an optional embodiment, the cooling liquid circulation system further comprises a first temperature sensor, which is used for detecting the temperature of the cooling liquid in the cooling liquid circulation system.

[0011] In an optional embodiment, the fuel heating system comprises a fuel heater and a fuel pump. The fuel heater and the fuel pump are connected in series and connected with the double-cavity fuel tank and the engine heat exchange cavity in sequence.

[0012] In an optional embodiment, the retarder oil circulation system comprises a retarder and an oil pump. The retarder, the oil pump and another loop of the retarder heat exchanger are connected in sequence to form an overall oil circulation loop.

[0013] In an optional embodiment, the warm air system comprises a warm air heat exchanger and a blower. The warm air heat exchanger is connected with the main radiator and the second three-way valve. The air blower is arranged on one side of the warm air heat exchanger, and is used for blowing the heated air to the cab.

[0014] In the optional embodiment, the vehicle air conditioning system comprises a vehicle air conditioning evaporator and a vehicle air conditioning condenser. The vehicle air conditioning evaporator is arranged correspondingly to the warm air heat exchanger, and can exchange heat with the warm air heat exchanger. The vehicle air conditioning evaporator and the vehicle air conditioning condenser form a vehicle air conditioning loop.

[0015] In the second aspect, the application provides a mine dump truck, comprising the mine dump truck whole vehicle thermal management system according to any one of the preceding embodiments.

[0016] The mine dump truck whole vehicle thermal management system has the following advantages: In the low-temperature condition, the engine low-temperature cold start system is used to start and use the vehicle, and in the high-temperature environment, the retarder oil circulation system is used to exchange heat with the cooling liquid circulation system, so as to realize the cooling start of the vehicle. The mine dump truck whole vehicle thermal management system can automatically adapt to the high-temperature and low-temperature environment, so as to effectively control the whole vehicle temperature, and can adapt to the application requirements in the area with large temperature difference, and can replace the current thermal management system which cannot completely adapt to the high-temperature and low-temperature working conditions. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0018] Figure 1 The mine dump truck whole vehicle thermal management system provided by the embodiments of the application has the whole working principle diagram; Figure 2 The cooling liquid circulation system of the mine dump truck whole vehicle thermal management system provided by the embodiments of the application has the working principle diagram; Figure 3 The cab thermal management system of the mine dump truck whole vehicle thermal management system provided by the embodiments of the application has the working principle diagram; Figure 4 The retarder oil circulation system of the mine dump truck whole vehicle thermal management system provided by the embodiments of the application has the working principle diagram; Figure 5 The engine low-temperature cold start system of the mine dump truck whole vehicle thermal management system provided by the embodiments of the application has the working principle diagram; Figure 6The working principle diagram of the fuel heating system of the whole vehicle thermal management system of the mine dump truck provided by the embodiment of the present application is provided.

[0019] Reference signs: 1-coolant circulation system; 101-main radiator; 102-main radiator fan; 103-first check valve; 104-first temperature sensor; 105-vice radiator fan; 106-vice radiator; 107-retarder heat exchanger; 108-water pump; 109-first three-way valve; 110-engine; 2-cab thermal management system; 21-heating system; 211-ball valve; 212-blower; 213-heating heat exchanger; 221-traveling air conditioning evaporator; 22-traveling air conditioning system; 222-second check valve; 223-second temperature sensor; 224-traveling air conditioning compressor; 225-traveling air conditioning electronic fan; 226-traveling air conditioning condenser; 227-traveling air conditioning expansion valve; 23-parking air conditioning system; 231-parking air conditioning evaporator; 232-third check valve; 233-third temperature sensor; 234-parking air conditioning compressor; 235-parking air conditioning electronic fan; 236-parking air conditioning condenser; 237-parking air conditioning expansion valve; 3-retarder oil circulation system; 301-fourth temperature sensor; 302-oil pump; 303-retarder; 4-engine low-temperature cold start system; 401-coolant heater; 402-double-cavity fuel tank; 5-fuel heating system; 501-fuel heater; 502-fuel pump; 6-second three-way valve. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0022] It should be noted that similar reference numerals and letters refer to like items throughout the accompanying drawings, and once an item is defined in one drawing, it is not necessary to further define and explain it in subsequent drawings.

[0023] In the description of the application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed during use, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first", "second", "third", and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0024] In addition, the terms "horizontal", "vertical", "overhanging", and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0025] In the description of the application, it should also be noted that unless otherwise explicitly specified and limited, the terms "provided", "mounted", "connected", "linked" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, or can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0026] The following will be combined Figures 1-6 to make a detailed description of some embodiments of the application. In the case of no conflict, the following examples and features in the examples can be combined with each other.

[0027] In a first aspect, the present application provides a whole vehicle thermal management system for a mine dump truck, comprising a coolant circulation system 1, an engine low-temperature cold start system 4, a fuel heating system 5, a retarder oil circulation system 3, a warm air system 21, a driving air conditioning system 22, and a parking air conditioning system 23; the engine low-temperature cold start system 4 comprises a double-cavity fuel tank 402 and a coolant heater 401, the double-cavity fuel tank 402 is connected to the oil circulation loop of the coolant heater 401 and the water circulation loop of the fuel heating system 5 respectively; the coolant circulation system 1 can exchange heat with the engine low-temperature cold start system 4, the fuel heating system 5, the retarder oil circulation system 3, and the warm air system 21 respectively; the warm air system 21 can exchange heat with the driving air conditioning system 22; and the driving air conditioning system 22 can exchange heat with the parking air conditioning system 23.

[0028] In this embodiment, the engine low-temperature cold start system 4 uses the double-cavity fuel tank 402, and the fuel heating system 5 is used to heat the coolant, which can quickly raise the temperature of the coolant and realize reliable cold start of the engine 110, and the use of the double-cavity fuel tank 402 greatly reduces the fuel consumption cost.

[0029] In this embodiment, the fuel heating system 5 uses the water temperature in the engine 110 to heat the fuel, which can quickly relieve the low-temperature conditions such as condensation and waxing of low-grade fuel in the double-cavity fuel tank 402, and realize fast cold start.

[0030] The warm air system 21 can recover the waste heat of the engine 110, and use the coolant to heat the cab, realizing the effective combination of energy saving and heating.

[0031] The driving air conditioning system 22 uses an independent condensing fan for heat dissipation, which greatly reduces the heat dissipation load of the engine 110 and realizes effective management of the temperature in the cab during driving.

[0032] The retarder oil circulation temperature control system uses a temperature control structure, and when the oil temperature is too high, the output torque of the retarder will be limited to protect the cooling circulation system.

[0033] In an optional embodiment, the cooling liquid circulation system 1 comprises a main radiator 101, a main radiator fan 102, a first three-way valve 109, a second three-way valve 6, a retarder heat exchanger 107, a water pump 108, and a heat exchange cavity of an engine 110; the main radiator fan 102 is arranged on one side of the main radiator 101 and used for radiating the main radiator 101; the first three-way valve 109 is connected with the water pump 108, the main radiator 101, and the cooling liquid heater 401 of the engine low-temperature cold start system 4 respectively; the second three-way valve 6 is connected with the cooling liquid heater 401, the retarder heat exchanger 107, and an outlet of the heating system 21; an outlet of the main radiator 101 is connected with an inlet of the heating system 21; another circulation loop in the retarder heat exchanger 107 is connected with the retarder oil circulation system 3; and another circulation loop of the heat exchange cavity of the engine 110 is connected with the fuel heating system 5.

[0034] The cooling liquid circulation system 1 is a core part of the whole vehicle thermal management, and mainly comprises a main radiator 101, a main radiator fan 102, a first three-way valve 109, a second three-way valve 6, a retarder heat exchanger 107, a water pump 108, and a heat exchange cavity of an engine 110. The main radiator fan 102 is arranged on one side of the main radiator 101, and through rotation of the fan, air flow is accelerated to radiate the cooling liquid in the main radiator 101, so that the temperature of the cooling liquid is kept within a reasonable range. The first three-way valve 109 plays a key role in distributing and converging, and is connected with the water pump 108, the main radiator 101, and the cooling liquid heater 401 of the engine low-temperature cold start system 4 respectively.

[0035] When the cooling liquid flows out of the water pump 108, according to the running state and temperature demand of the vehicle, the first three-way valve 109 can adjust the flow direction of the cooling liquid, part of the cooling liquid flows into the main radiator 101 for radiation, and part of the cooling liquid flows into the cooling liquid heater 401 for heating.

[0036] The second three-way valve 6 is connected with the cooling liquid heater 401, the retarder heat exchanger 107, and an outlet of the heating system 21, and according to the system demand, the cooling liquid is reasonably distributed to the retarder heat exchanger 107 and the heating system 21.

[0037] The outlet of the main radiator 101 is connected with the inlet of the heating system 21, so that the cooling liquid radiated by the main radiator 101 can flow into the heating system 21 to provide heat for the cab.

[0038] Another circulation loop in the retarder heat exchanger 107 is connected with the retarder oil circulation system 3, so as to realize heat exchange between the cooling liquid and the retarder oil, take away the heat generated by the retarder oil, and ensure the temperature stability of the retarder oil.

[0039] The other circulation loop of the heat exchange cavity of the engine 110 is connected with the fuel heating system 5, and the heat exchange between the coolant and the fuel is used to preheat the fuel by using the heat generated by the operation of the engine 110, so as to improve the temperature of the fuel and improve the combustion efficiency of the engine 110.

[0040] In an optional embodiment, the coolant circulation system 1 further comprises a sub-radiator 106 and a sub-radiator fan 105; the sub-radiator 106 is arranged between the second three-way valve 6 and the retarder heat exchanger 107; and the sub-radiator fan 105 is arranged on one side of the sub-radiator 106 and used to dissipate heat of the sub-radiator 106.

[0041] In the coolant circulation system 1, the sub-radiator 106 structure is added, the sub-radiator fan 105 is matched, the opening and closing of the sub-radiator fan 105 is controlled according to the temperature of the coolant, and the multi-stage control of the sub-radiator fan 105 according to the temperature can be also arranged, so that the heat dissipation effect of the main radiator 101 can be effectively supplemented, and the closed-loop control of the temperature of the coolant can be realized.

[0042] In an optional embodiment, a first one-way valve 103 is arranged between the second three-way valve 6 and the sub-radiator 106, and used to limit the flow direction of the liquid to be from the second three-way valve 6 to the sub-radiator 106.

[0043] In this embodiment, a first one-way valve 103 is further arranged between the second three-way valve 6 and the sub-radiator 106, and the first one-way valve 103 is used to limit the flow direction of the coolant to ensure that the coolant can only flow from the second three-way valve 6 to the sub-radiator 106, prevent the coolant from flowing back, and ensure the normal operation of the coolant circulation system 1.

[0044] In an optional embodiment, the coolant circulation system 1 further comprises a first temperature sensor 104, and the first temperature sensor 104 is used to detect the temperature of the coolant in the coolant circulation system 1.

[0045] In this embodiment, a first temperature sensor 104 is further arranged in the coolant circulation system 1, and the first temperature sensor 104 is installed at a suitable position in the coolant circulation system 1 and used to detect the temperature of the coolant in real time.

[0046] Through the detection data of the first temperature sensor 104, the control system of the vehicle can automatically adjust the rotation speed of the main radiator fan 102 and the sub-radiator fan 105 and the opening angle of the three-way valve according to the actual temperature of the coolant, so as to realize the accurate control of the temperature of the coolant and ensure the efficient operation of the whole vehicle thermal management system.

[0047] In an optional embodiment, the fuel heating system 5 comprises a fuel heater 501 and a fuel pump 502; the fuel heater 501 and the fuel pump 502 are connected in series and sequentially communicate with the double-cavity fuel tank 402 and the heat exchange cavity of the engine 110.

[0048] In the present embodiment, the main function of the fuel heating system 5 is to heat the fuel by using the water temperature in the engine 110. It comprises a fuel heater 501 and a fuel pump 502.

[0049] Specifically, in the present embodiment, the fuel heater 501 and the fuel pump 502 are connected in series, and the fuel pump 502 pumps the fuel out of the double-cavity fuel tank 402 and through the fuel heater 501 for heating. The fuel heater 501 is internally provided with a circulation loop connected with the heat exchange cavity of the engine 110, and the heat generated by the operation of the engine 110 is transferred to the fuel through the heat exchange between the coolant and the fuel.

[0050] This heating method can quickly alleviate the problems of condensation and waxing of low-grade fuel in the double-cavity fuel tank 402 under low temperature conditions, ensure the normal flow of fuel, realize the rapid cold start of the engine 110, and improve the starting performance of the vehicle in low temperature environment.

[0051] In an optional embodiment, the retarder oil circulation system 3 comprises a retarder 303 and an oil pump 302; the retarder 303, the oil pump 302 and the other loop of the retarder heat exchanger 107 are sequentially connected to form an overall oil circulation loop.

[0052] The retarder oil circulation system 3 is used for cooling and circulating the oil in the retarder 303. It comprises a retarder 303 and an oil pump 302.

[0053] Specifically, in the present embodiment, the oil pump 302 pumps the oil in the retarder 303 out and through the retarder heat exchanger 107 for cooling. The other circulation loop in the retarder heat exchanger 107 is connected with the retarder heat exchanger 107 of the coolant circulation system 1, and the heat generated by the oil in the retarder 303 is taken away through the heat exchange between the coolant and the retarder 303, so as to ensure that the temperature of the retarder 303 is stable within a suitable range. The cooled oil in the retarder 303 flows back into the retarder, forming a complete oil circulation loop and ensuring the normal operation of the retarder.

[0054] In the present embodiment, a fourth temperature sensor 301 is further arranged in the retarder oil circulation system 3 for detecting the temperature of the retarder oil circulation system 3.

[0055] In the present embodiment, the heating system 21, the running air conditioning system 22 and the parking air conditioning system 23 jointly constitute the cab thermal management system 2.

[0056] In an optional embodiment, the heating system 21 comprises a heating heat exchanger 213 and a blower 212; the heating heat exchanger 213 is connected to the main radiator 101 and the second three-way valve 6; the blower 212 is arranged on one side of the heating heat exchanger 213, and is used to blow the heated air to the cab.

[0057] In this embodiment, the heating system 21 is mainly used to provide heat for the cab and improve the temperature environment in the cab.

[0058] Specifically, in this embodiment, the heating system 21 comprises a heating heat exchanger 213 and a blower 212. The heating heat exchanger 213 is connected to the main radiator 101 and the second three-way valve 6, and the high-temperature coolant in the coolant circulation system 1 flows into the heating heat exchanger 213 to transfer heat to the air in the heating heat exchanger 213. The blower 212 is installed on one side of the heating heat exchanger 213, and by rotating the blower 212, the heated air is blown to the cab to provide warm air for the cab and improve the temperature in the cab to create a comfortable driving environment for the driver.

[0059] In this embodiment, a ball valve 211 is arranged in the heating system 21 to control the opening and closing of the heating system 21.

[0060] In an optional embodiment, the driving air conditioning system 22 comprises a driving air conditioning evaporator 221 and a driving air conditioning condenser 226; the driving air conditioning evaporator 221 is arranged corresponding to the heating heat exchanger 213 and can exchange heat with the heating heat exchanger 213; the driving air conditioning evaporator 221 and the driving air conditioning condenser 226 form a driving air conditioning circuit.

[0061] In this embodiment, the driving air conditioning system 22 comprises a driving air conditioning evaporator 221 and a driving air conditioning condenser 226. The driving air conditioning evaporator 221 is adjacent to the heating heat exchanger 213, and by heat exchange, the temperature of the heating heat exchanger 213 is changed to fully utilize the waste heat of the whole vehicle.

[0062] The driving air conditioning evaporator 221 and the driving air conditioning condenser 226 form a driving air conditioning circuit, and by circulating the refrigerant between the evaporator and the condenser, the temperature in the cab is adjusted.

[0063] Specifically, in the present embodiment, the running air conditioning system 22 includes a running air conditioning evaporator 221, a second one-way valve 222, a second temperature sensor 223, a running air conditioning compressor 224, a running air conditioning condenser 226 and a running air conditioning expansion valve 227, which are sequentially connected to form a loop of the running air conditioning system 22 for temperature adjustment in the cab. The running air conditioning electronic fan 225 is arranged corresponding to the running air conditioning condenser 226.

[0064] In the present embodiment, the parking air conditioning system 23 includes a parking air conditioning evaporator 231, a third one-way valve 232, a third temperature sensor 233, a parking air conditioning compressor 234, a parking air conditioning condenser 236 and a parking air conditioning expansion valve 237, which are sequentially connected for temperature adjustment in the cab. The parking air conditioning electronic fan 235 is arranged corresponding to the parking air conditioning condenser 236.

[0065] As can be seen from the above, the running conditions of the whole vehicle thermal management system of the mining dump truck under different ambient temperatures are as follows: Under low-temperature environment, the engine low-temperature cold start system 4 is started, and its core components, the double-cavity fuel tank 402 and the coolant heater 401, start to work. The double-cavity fuel tank 402 uses its unique structure to divide the fuel into two chambers, which store different grades of fuel. During low-temperature start, the system preferentially uses low-grade fuel because its freezing point is lower and it is more suitable for low-temperature environment. The coolant heater 401 transmits heat to the fuel in the double-cavity fuel tank 402 by heating the coolant, which raises the temperature of the fuel, improves the flowability of the fuel and reduces the viscosity of the fuel, thereby realizing the reliable cold start of the engine 110. This process not only solves the problem of difficult low-temperature start, but also reduces the use amount of high-grade fuel and the fuel consumption cost through the application of the double-cavity fuel tank 402.

[0066] Under low-temperature environment, the retarder oil circulation system 3 is not started. This is because the heat generated by the oil in the retarder 303 is less at low temperature, and the main task of the vehicle at the low-temperature start stage is to start the engine 110 as soon as possible and make it enter the normal working state. At this time, the non-starting of the retarder oil circulation system 3 can avoid unnecessary heat loss and reduce the energy consumption of the system, ensuring the starting efficiency and economy of the vehicle.

[0067] In a low-temperature environment, the heating system 21 operates normally, and its main function is to absorb the excess heat of the engine 110 and use the coolant to heat the cab. The coolant circulation system 1 transfers the heat generated by the operation of the engine 110 to the heating heat exchanger 213 through the coolant, and the heating heat exchanger 213 transfers the heat to the air, and the air blower 212 blows the heated air to the cab to provide a warm environment for the cab. This way of using the excess heat of the engine 110 not only realizes efficient use of energy and saves additional heating energy consumption, but also provides a comfortable driving environment for the driver and improves the comfort and safety of driving.

[0068] In a high-temperature environment, the retarder oil circulation system 3 is enabled. At this time, the operating environment temperature of the vehicle is relatively high, and the retarder 303 generates more heat during operation. The retarder oil circulation system 3 draws the oil in the retarder 303 through the oil pump 302 and cools it through the retarder heat exchanger 107. The coolant circulation loop in the retarder heat exchanger 107 is connected to the coolant circulation system 1, and through the heat exchange between the coolant and the oil in the retarder 303, the heat generated by the oil in the retarder 303 is taken away, ensuring that the temperature of the oil in the retarder 303 is stable within a suitable range. This process is crucial to protect the normal operation of the retarder 303, avoiding the performance degradation or damage of the oil in the retarder 303 due to high temperature, thereby ensuring the braking performance and operation safety of the vehicle.

[0069] In a high-temperature environment, the engine low-temperature cold start system 4 is not enabled. This is because there is no low-temperature start difficulty problem in the start of the engine 110 in a high-temperature environment, and the engine 110 can be started smoothly within the normal temperature range. At this time, the engine low-temperature cold start system 4 is in standby state, without consuming additional energy, improving the overall efficiency and economy of the system.

[0070] In a high-temperature environment, the heating system 21 still operates normally, but its main function is no longer to provide heat to the cab, but to dissipate the excess heat generated by the engine 110 through the coolant circulation system 1, avoiding the cab temperature being too high. At the same time, the heating system 21 can also adjust the heat transfer according to the temperature demand in the cab, ensuring the temperature comfort in the cab. This flexible operation mode enables the heating system 21 to function in different environmental temperatures, realizing efficient use of energy and effective management of the cab temperature.

[0071] The thermal management system for mining dump trucks provided by this invention effectively manages the vehicle's heat by rationally activating or deactivating different subsystems based on changes in ambient temperature. In low-temperature environments, the engine's low-temperature cold start system 4 is activated first to ensure the engine 110 can start quickly and reliably. Simultaneously, the heating system 21 absorbs excess heat from the engine 110, providing heat to the cab and improving the vehicle's starting performance and driving comfort. In high-temperature environments, the retarder oil circulation system 3 is activated to ensure stable oil temperature within the retarder 303, protecting the vehicle's braking performance. Meanwhile, the heating system 21 continues to regulate the cab temperature, ensuring a comfortable environment inside the cab. This flexible system design not only improves the vehicle's operating performance under different environmental conditions but also achieves efficient energy utilization, reduces operating costs, and enhances the vehicle's economy and environmental friendliness.

[0072] Secondly, the present invention provides a mining dump truck, including the mining dump truck thermal management system described in any of the foregoing embodiments.

[0073] The beneficial effects of the embodiments of the present invention are: In low-temperature conditions, the vehicle is started and used through the engine low-temperature cold start system 4. In high-temperature environments, the retarder oil circulation system 3 exchanges heat with the coolant circulation system 1 to achieve a cooling start for the vehicle. The mining dump truck's overall thermal management system can automatically adapt to high and low temperature environments, thereby effectively controlling the overall vehicle temperature. It can meet the application requirements of areas with large temperature differences and can replace current thermal management systems that cannot fully adapt to high and low temperature operating conditions.

[0074] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A mine dump truck vehicle thermal management system, characterized by, The cooling liquid circulation system, the engine low-temperature cold start system, the fuel heating system, the retarder oil circulation system, the warm air system, the driving air conditioning system and the parking air conditioning system; The engine low-temperature cold start system comprises a double-cavity fuel tank and a cooling liquid heater, and the double-cavity fuel tank is connected with the oil circulation loop of the cooling liquid heater and the water circulation loop of the fuel heating system respectively; The cooling liquid circulation system can exchange heat with the engine low-temperature cold start system, the fuel heating system, the retarder oil circulation system and the warm air system respectively; The warm air system can exchange heat with the driving air conditioning system; The driving air conditioning system can exchange heat with the parking air conditioning system.

2. The mine dump truck vehicle thermal management system of claim 1, wherein, The cooling liquid circulation system comprises a main radiator, a main radiator fan, a first three-way valve, a second three-way valve, a retarder heat exchanger, a water pump and an engine heat exchange cavity; The main radiator fan is arranged on one side of the main radiator and used for radiating the main radiator; The first three-way valve is connected with the water pump, the main radiator and the cooling liquid heater of the engine low-temperature cold start system respectively; The second three-way valve is connected with the cooling liquid heater, the retarder heat exchanger and the liquid outlet end of the warm air system; The liquid outlet end of the main radiator is connected with the liquid inlet end of the warm air system; Another circulation loop in the retarder heat exchanger is connected with the retarder oil circulation system; Another circulation loop in the engine heat exchange cavity is connected with the fuel heating system.

3. The mine dump truck vehicle thermal management system of claim 2, wherein, The cooling liquid circulation system further comprises a secondary radiator and a secondary radiator fan; The secondary radiator is arranged between the second three-way valve and the retarder heat exchanger; The secondary radiator fan is arranged on one side of the secondary radiator and used for radiating the secondary radiator.

4. The mine dump truck vehicle thermal management system of claim 3, wherein, A first one-way valve is arranged between the second three-way valve and the secondary radiator, and used for limiting the liquid to flow from the second three-way valve to the secondary radiator only.

5. The mine dump truck vehicle thermal management system of claim 2, wherein, The cooling liquid circulation system further comprises a first temperature sensor, which is used for detecting the temperature of the cooling liquid in the cooling liquid circulation system.

6. The mine dump truck vehicle thermal management system of claim 2, wherein, The fuel heating system comprises a fuel heater and a fuel pump; The fuel heater and the fuel pump are connected in series and connected with the double-cavity fuel tank and the engine heat exchange cavity in sequence.

7. The mine dump truck vehicle thermal management system of claim 2, wherein, The retarder oil circulation system comprises a retarder and an oil pump; The retarder, the oil pump and another loop of the retarder heat exchanger are connected in sequence to form an overall oil circulation loop.

8. The mine dump truck vehicle thermal management system of claim 2, wherein, The warm air system comprises a warm air heat exchanger and a blower; The warm air heat exchanger is connected with the main radiator and the second three-way valve; The blower is arranged on one side of the warm air heat exchanger and used for blowing the heated air to the cab.

9. The mine dump truck vehicle thermal management system of claim 8, wherein, The driving air conditioning system comprises a driving air conditioning evaporator and a driving air conditioning condenser; The driving air conditioning evaporator is arranged correspondingly with the warm air heat exchanger and can exchange heat with the warm air heat exchanger; The driving air conditioning evaporator and the driving air conditioning condenser form a driving air conditioning loop.

10. A mining dump truck characterized in that, The mining dump truck whole vehicle thermal management system comprises the whole vehicle thermal management system of any one of claims 1-9.

Images