Comprehensive thermal management system of loading machine

Abstract

The utility model provides a comprehensive heat management system of a loading machine, which is in communication connection with a whole machine control system of the loading machine and comprises an integrated heat management control module and an integrated composite radiator, the integrated heat management control module is respectively connected with a condenser and a cab air-conditioning system through a refrigerant pipeline, and the integrated composite radiator is connected with the condenser. The integrated heat management control module is connected with the battery system through a cooling water pipeline, the integrated heat management control module and the integrated composite radiator are designed in a split mode, the condenser is integrated in the integrated composite radiator, the integrated heat management control module is provided with a heat management control module, and the heat management control module is connected with the integrated composite radiator. The heat management control module is in communication connection with the integrated composite radiator and the whole machine control system. The heat management system effectively solves the problems that a condenser in an existing heat management system is easy to block, high in cost, difficult to maintain and the like, has the characteristics of energy conservation and environmental protection, and has wide application prospects and extremely high popularization value.

Description

TECHNICAL FIELD

[0001] The utility model relates to loader heat management technical field, concretely relates to a loader comprehensive heat management system. BACKGROUND

[0002] At present, the electric loader heat management system has many problems. The traditional heat management system usually includes three independent systems, namely the cab air conditioning system, the battery water cooling unit system and the automatic temperature-sensing fan system (ATS fan system). This independent setting method has the following disadvantages. Disadvantage one, the battery water cooling unit and the condenser of the air conditioner are easy to suck in dust during work, causing the condenser to be blocked. Once blocked, the water cooling unit will be overloaded, causing early damage. And due to its structure and installation position, cleaning and maintenance are extremely difficult, making the failure rate of the whole system high. Disadvantage two, three independent systems are equipped with multiple fans, increasing equipment cost and space occupation. Disadvantage three, the air conditioning system and the water cooling unit are equipped with compressors, increasing the system cost.

[0003] In view of the above problems in the prior art, the utility model aims to provide an improved loader comprehensive heat management system to solve the problems in the prior art. UTILITY MODEL CONTENT

[0004] The purpose of the present application is to provide a loader comprehensive heat management system, which effectively solves the problems of condenser blockage, high cost and difficult maintenance in the existing heat management system, and improves the reliability and economy of the whole system.

[0005] According to the present application, a loader comprehensive heat management system is provided, which is in communication connection with the whole machine control system of the loader, and is used for adjusting the temperature of the battery system and the refrigeration working condition of the cab air conditioning system. The system includes an integrated heat management control module and an integrated composite radiator. The integrated heat management control module is connected with the condenser and the cab air conditioning system through the refrigerant pipeline respectively. The integrated heat management control module is connected with the battery system through the cooling water pipeline. The integrated heat management control module and the integrated composite radiator adopt a split design. The condenser is integrated in the integrated composite radiator. The integrated heat management control module is equipped with a heat management control module, which is in communication connection with the integrated composite radiator and the whole machine control system respectively.

[0006] In the above technical solution, through the cooperative operation of the integrated heat management control module and the integrated composite radiator, and the communication connection of the heat management control module and each component, efficient heat management of the loader battery system and the cab air conditioning system is realized. The system is widely applicable to various complex working conditions of the loader operation scene, improves the working efficiency and stability, provides a comfortable driving environment for the driver, has significant advantages in energy saving and environmental protection, and has great popularization and application value.

[0007] Further, the integrated heat management control module includes an electronic distribution module, an expansion valve, a heat exchanger, a merging block, a gas-liquid separator, a compressor and a pressure sensor arranged in sequence along the direction of refrigerant transmission in the refrigerant pipeline and in communication connection with the heat management control module, wherein the two ends of the condenser are connected with the exhaust port of the compressor and the refrigerant input end of the electronic distribution module respectively, and the pressure sensor is arranged between the compressor and the condenser. The orderly arrangement of each component ensures that the refrigerant circulates in the system according to the established process, realizes efficient refrigeration and heat exchange, and the pressure sensor monitors the pressure in real time to provide key data for the heat management control module and ensure safe and stable operation of the system.

[0008] Further, the electronic distribution module is provided with two refrigerant output ports connected with the evaporator of the cab air conditioning system and the expansion valve. The arrangement of the electronic distribution module realizes flexible regulation and control of the refrigerant flow direction and flow rate, improves the refrigeration efficiency, and ensures that the cab air conditioning system and other refrigeration links can obtain appropriate refrigerant supply under different environments and working conditions.

[0009] Further, the integrated heat management control module further includes a water tank, a water pump and a water temperature sensor arranged in sequence along the direction of cooling water transmission in the cooling water pipeline, and the two ends of the water pump are connected with the water outlet of the water tank and the cooling water inlet of the heat exchanger respectively, and the cooling water outlet of the heat exchanger is connected with the battery water path of the battery system. Through the circulation of cooling water, the heat generated by the battery during operation is effectively removed, the battery is maintained to work within a suitable temperature range, the service life of the battery is prolonged, and the performance stability of the battery is improved.

[0010] Further, a PTC is arranged between the heat exchanger and the water temperature sensor. The optional PTC solves the problem of battery performance degradation in low temperature environment, widens the working temperature range of the loader, and ensures that the battery system and the whole machine can still operate normally in cold environment.

[0011] Further, the integrated composite radiator includes a motor electric control radiator, a hydraulic oil radiator and a cooling fan, and the condenser, the motor electric control radiator and the hydraulic oil radiator share the cooling fan.

[0012] In the above technical solution, the number of cooling fans is reduced to reduce cost and energy consumption; the shared cooling fan optimizes the system structure, improves the cooling efficiency, and ensures that the temperature of each component is within the normal working range.

[0013] Further, the front end of the air inlet side of the heat dissipation fan is sequentially provided with a condenser, a motor and electric control radiator and a hydraulic oil radiator along the air inlet direction, and the condenser is located at the forefront of the motor and electric control radiator and the hydraulic oil radiator along the air inlet direction. By means of reasonable layout, the cooling air first cools the high-temperature refrigerant in the condenser, and then sequentially cools the motor and electric control radiator and the hydraulic oil radiator, which meets the heat dissipation requirements of each component and improves the overall heat dissipation effect.

[0014] Further, the motor and electric control radiator and the hydraulic oil radiator are respectively provided with an electric control motor cooling water temperature sensor and a hydraulic oil temperature sensor which are in communication connection with the thermal management control module and / or the whole machine control system.

[0015] In the above technical scheme, the electric control motor cooling water temperature sensor and the hydraulic oil temperature sensor are arranged, so that the thermal management control module and the whole machine control system can accurately control the rotating speed of the heat dissipation fan and the working state of other related components according to real-time temperature data, and the stable operation of the motor and electric control system and the hydraulic system is ensured.

[0016] Further, the heat dissipation fan is provided with a fan controller which is in communication connection with the thermal management control module and / or the whole machine control system. The fan controller is arranged to flexibly adjust the rotating speed of the heat dissipation fan according to the actual heat dissipation requirement of the system, so as to avoid excessive heat dissipation or insufficient heat dissipation, improve the energy utilization efficiency and prolong the service life of the heat dissipation fan.

[0017] Further, the thermal management control module adopts a GD32F305 series microcontroller chip

[0018] Compared with the prior art, the beneficial results of the utility model lie in that:

[0019] (1) The battery system and the condenser of the cab air conditioning system can be combined and integrated in the integrated composite radiator. This innovative design greatly facilitates the maintenance of the equipment, especially in high-dust working conditions. The problem that the condenser and other heat dissipation components are easily blocked and difficult to clean after being blocked in the prior art is effectively solved. The design reduces the maintenance cost and difficulty, improves the adaptability and stability of the equipment in complex environments.

[0020] (2) The integrated thermal management control module of the application does not need to consider the heat dissipation air duct, so it can be designed to be sealed. This improvement effectively reduces the risk of water ingress and dust impact. The sealed design improves the protection performance of the integrated thermal management control module, prolongs the service life of the equipment and reduces the probability of failure, providing a strong guarantee for the stable operation of the loader.

[0021] (3), the application cancels the heat dissipation fan of the battery system and the cab air conditioning system, realizes the reduction of cost and the reduction of volume. This not only helps to improve the economy of the equipment, but also provides more flexibility for the overall layout of the loader, so that it can better realize various functions in limited space. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings are included to provide a further understanding of embodiments and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments and serve the purpose of explaining principles of the present application. Many of the anticipated advantages of the embodiments and other embodiments will be readily appreciated as the same become better understood by reference to the following detailed description. The elements of the drawings are not necessarily to scale as some elements are purposely shown exaggerated in order to illustrate specific aspects of the application. The same reference numbers in different drawings identify the same or similar elements.

[0023] Figure 1 is a schematic diagram of a comprehensive thermal management system of a loader according to an embodiment of the present application;

[0024] Meaning of each number in the figure: 100-integrated thermal management control module, 200-integrated composite radiator, 300-machine control system, 400-cab air conditioning system, 500-battery system, 101-compressor, 102-pressure sensor P1, 103-refrigerant pipeline, 104-electronic distribution module, 105-expansion valve, 106-heat exchanger, 107-merging block, 108-gas-liquid separator, 109-water pump, 110-PTC, 111-water temperature sensor T1, 112-water tank, 113-liquid level sensor, 114-cooling water pipeline, 115-thermal management control module, 201-condenser, 202-motor electronic control radiator, 203-hydraulic oil radiator, 204-radiator fan, 205-motor electronic control cooling water temperature sensor, 206-hydraulic oil temperature sensor, 1031-refrigerant pipeline interface one, 1032-refrigerant pipeline interface two, 1033-refrigerant pipeline interface three, 1034-refrigerant pipeline interface four, 1141-cooling water pipeline interface one, 1142-cooling water pipeline interface two. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] Reference Figure 1 , Figure 1The application shows a loader integrated thermal management system architecture diagram. As shown in the figure, the integrated thermal management system is in communication connection with the whole machine control system 300 of the loader, and is used for adjusting the temperature of the battery system 500 of the loader and the refrigeration working condition of the cab air conditioning system 400. The integrated thermal management system comprises an integrated thermal management control module 100 and an integrated composite radiator 200. The integrated thermal management control module 100 is connected with the condenser 201 and the cab air conditioning system 400 via refrigerant pipelines 103 respectively. The integrated thermal management control module 100 is connected with the battery system 500 through cooling water pipelines 114. The integrated thermal management control module 100 and the integrated composite radiator 200 adopt a split design. The condenser 201 is integrated in the integrated composite radiator 200. The integrated thermal management control module 100 is provided with a thermal management control module 115. The thermal management control module 115 is connected with the integrated composite radiator 200 and the whole machine control system 300 respectively. The whole machine control system 300 is connected with the integrated thermal management control module 100, the integrated composite radiator 200, the cab air conditioning system 400 and the battery system 500 through CAN bus communication. The integrated thermal management control module 100 is connected with the condenser 201 of the integrated composite radiator 200 and the evaporating box of the cab air conditioning system 400 via refrigerant pipelines 103 respectively, so as to realize refrigerant circulation. The integrated thermal management control module 100 is connected with the battery water pipeline of the battery system 500 through cooling water pipelines 114, so as to realize temperature management of the battery system by taking cooling water as a medium.

[0027] In some specific embodiments, the integrated thermal management control module 100 comprises refrigerant pipelines 103 and an electronic distribution module 104, an expansion valve 105, a heat exchanger 106, a confluence block 107, a gas-liquid separator 108, a compressor 101 and a pressure sensor P1 102 arranged in sequence along the refrigerant transmission direction. The exhaust port of the compressor 101 and the refrigerant input end of the electronic distribution module 104 are connected with the condenser 201 of the integrated composite radiator 200 respectively. The refrigerant pipelines 103 are provided with a refrigerant pipeline interface one 1031, a refrigerant pipeline interface two 1032, a refrigerant pipeline interface three 1033 and a refrigerant pipeline interface four 1034. The refrigerant pipeline interface one 1031 is connected with the refrigerant inlet of the condenser 201, and is used for conveying the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 101 to the condenser 201. The refrigerant pipeline interface two 1032 is connected with the refrigerant outlet of the condenser 201, so as to return the liquid refrigerant cooled by the condenser 201 to the integrated thermal management control module 100. The refrigerant pipeline interface three 1033 and the refrigerant pipeline interface four 1034 are connected with the refrigerant inlet and the refrigerant outlet of the evaporating box of the cab air conditioning system 400 respectively, so as to realize the circulation flow of the refrigerant between the integrated thermal management control module 100 and the cab air conditioning system 400, and further meet the refrigeration demand of the cab.

[0028] Figure 1 Blue line represents the refrigerant cycle, the compressor 101 compresses the low-temperature and low-pressure gaseous refrigerant into high-temperature and high-pressure gas, and then enters the condenser 201 of the integrated composite radiator 200 through the refrigerant pipe interface one 1031. In the condenser 201, the high-temperature and high-pressure gaseous refrigerant exchanges heat with the outside air, gradually changes into liquid after releasing heat, and then flows back to the integrated thermal management control module 100 through the refrigerant pipe interface two 1032. The liquid refrigerant enters the electronic distribution module 104, and according to the instructions received from the thermal management control module 115, it is accurately distributed to different circuits according to the actual thermal management demand, and then passes through the expansion valve 105 to reduce the pressure, and becomes low-temperature and low-pressure liquid refrigerant into the heat exchanger 106. In the heat exchanger 106, the low-temperature and low-pressure liquid refrigerant absorbs heat and evaporates into gas. The gaseous refrigerant passes through the confluence block 107 and the gas-liquid separator 108, separates the liquid refrigerant contained therein, and then the gaseous refrigerant returns to the compressor 101, so as to complete a complete refrigerant cycle. Part of the refrigerant can also be distributed by the electronic distribution module 104 through the refrigerant pipe interface three 1033 to enter the cab air conditioning system 400 to realize the refrigeration function of the cab, and then through the refrigerant pipe interface four 1034 back to the confluence block 107 to continue to participate in the cycle.

[0029] Specifically, the pressure sensors respectively arranged between the compressor 101 and the refrigerant pipe interface one 1031, and the heat exchanger and the confluence block 107 are used to monitor the refrigerant pressure in real time, and provide key data for system regulation and control.

[0030] Specifically, the electronic distribution module 104 has two refrigerant output ports, which are connected to the expansion valve 105 and the evaporator of the cab air conditioning system 400, respectively. The cab air conditioning system 400 is equipped with a thermostatic expansion valve, which can adjust the pressure of the air conditioning circuit according to the sensed temperature, thereby regulating the refrigerant flow into the air conditioning circuit. The electronic distribution module 104 has two control implementation methods. First, it can use two independently controlled switches. When the cab air conditioning system 400 is not turned on, the corresponding refrigerant circuit is in a closed state to avoid unnecessary refrigerant flow. Second, it can use an electro-proportional distribution PWM control method that receives instructions from the thermal management control module 115. The thermal management control module 115 calculates the amount of cooling that needs to be distributed to different circuits based on the real-time operating status of the loader's thermal management system, such as the temperature of the battery system 500 and the cooling demand of the cab air conditioning system 400. The thermal management control module 115 sends corresponding PWM control signals to the electronic distribution module 104, thereby controlling the opening time and degree of the electronic components (such as solenoid valves or electric regulating valves) in the electronic distribution module 104 that control the opening degree of the refrigerant circuit. This method can precisely adjust the opening degree of the two refrigerant circuits leading to the expansion valve 105 and the evaporator of the cab air conditioning system 400 according to different thermal management needs, thereby realizing intelligent distribution of cooling capacity.

[0031] Specifically, the thermal management control module 115 uses the GD32F305 series microcontroller chip, which is based on... The core boasts a maximum clock speed of 120MHz and supports DSP instruction execution. It features high-speed, zero-wait access to flash memory and operates on a 2.6V-3.6V power supply. Its I / O ports can withstand 5V levels. The chip is equipped with two 16-bit advanced timers supporting three-phase PWM complementary output and Hall effect sensor interfaces for vector control. It also features up to ten 16-bit general-purpose timers, two 16-bit basic timers, and two multi-channel DMA controllers. To meet the needs of a wide range of mainstream applications, it is equipped with various basic peripheral resources, including up to three USARTs, two UARTs, three SPIs, two I2Cs, two I2Ss, two CAN 2.0Bs, one SDIO, and an external bus expansion controller (EXMC).

[0032] Specifically, the cab air conditioning system 400 and the battery system 500 are both existing system components of the loader. It needs to be emphasized that the structure of the two is not the innovation point of the application. For a detailed understanding of the internal structure and principle of the two systems, please refer to the relevant patent content of the patent with the patent number CN214028292U and the patent name "Heating device of electric mixer truck and electric mixer truck". The patent elaborates in detail on the heating device and the layout of the whole vehicle. Among them, the contents about the refrigeration and heating cycle principle of the air conditioning system and the basic framework of the battery system have certain commonality with the cab air conditioning system 400 and the battery system 500 of the loader, which can provide a beneficial reference for understanding the running logic and basic structure of the two systems in the loader.

[0033] In some specific embodiments, the water tank 112, the water pump 109 and the water temperature sensor T1 111 are arranged in sequence along the cooling water transmission direction on the cooling water pipeline 114. One end of the water pump 109 is connected with the water outlet of the water tank 112, and the other end is connected with the cooling water inlet of the heat exchanger 106, which provides power for the circulation flow of the cooling water in the pipeline. The cooling water pipeline 114 is provided with a cooling water pipeline interface one 1141 and a cooling water pipeline interface two 1142, which are respectively connected with the inlet and outlet of the battery water pipeline of the battery system 500. Water temperature sensors are installed on the cooling water pipeline sections between the water tank 112 and the cooling water pipeline interface one 1141 and between the heat exchanger 106 and the cooling water pipeline interface two 1142, which are used to monitor the temperature of the cooling water at the corresponding positions in real time.

[0034] As shown in FIG. 1, Figure 1 The cooling water in the water tank 112 is driven by the water pump 109, part of which flows into the battery water pipeline of the battery system 500 through the cooling water pipeline interface one 1141. This part of cooling water absorbs the heat generated by the battery during work in the battery water pipeline, and then flows back to the water tank 112 of the integrated thermal management control module 100 through the cooling water pipeline interface two 1142, so as to realize the temperature management function of the battery. The other part of the cooling water flows into the heat exchanger 106 to participate in the heat exchange process with the refrigerant to adjust the temperature of the refrigerant, and then continues to circulate in the cooling water pipeline 114.

[0035] Specifically, the water tank 112 is internally provided with a liquid level sensor 113, which is used to monitor the liquid level of the cooling water in the water tank 112 in real time, and provides protection for the stable operation of the system.

[0036] In the design of the cooling water circulation path, the preferred solution is to selectively set a PTC 110 between the heat exchanger 106 and the cooling water pipeline interface 1141. When the system is in a low temperature environment or some special working conditions, the PTC 110 can start to work to provide additional heat for the cooling water to meet the special needs of the temperature regulation of the battery system 500.

[0037] In some specific embodiments, in the loader comprehensive thermal management system, the integrated composite radiator 200 and the integrated thermal management control module 100 adopt a split design structure. Among them, the condenser 201 is integrated inside the integrated composite radiator 200, and the thermal management control module 115 is integrated inside the integrated thermal management control module. The integrated composite radiator 200 includes a motor and electric control radiator 202, a hydraulic oil radiator 203, and a plurality of sets of cooling fans 204. The condenser 201, the motor and electric control radiator 202, and the hydraulic oil radiator 203 share the cooling fans 204. At the front end of the air inlet side of the cooling fan 204, the condenser 201, the motor and electric control radiator 202, and the hydraulic oil radiator 203 are arranged in sequence along the air inlet direction, and the condenser 201 is located at the forefront of the motor and electric control radiator 202 and the hydraulic oil radiator 203 along the air inlet direction. When working, the cooling air first flows through the condenser 201, and then sequentially passes through the motor and electric control radiator 202 and the hydraulic oil radiator 203. The cooling fan 204 operates to cause external air to flow through the condenser 201, the motor and electric control radiator 202, and the hydraulic oil radiator 203 in sequence. In the process of flowing, the air carries away the heat of the refrigerant in the condenser 201, the heat generated by the motor and the electric control system in the motor and electric control radiator 202, and the heat of the hydraulic oil in the hydraulic oil radiator 203, thereby achieving heat dissipation of the above key components.

[0038] Specifically, the motor and electric control radiator 202 and the hydraulic oil radiator 203 are respectively provided with an electric control motor cooling water temperature sensor 205 and a hydraulic oil temperature sensor 206 which are in communication connection with the thermal management control module 115 and / or the whole machine control system 300. Real-time monitoring is performed by using the motor and electric control cooling water temperature sensor 205 and the hydraulic oil temperature sensor 206, and the monitoring data is fed back to the whole machine control system 300 and / or the thermal management control module 115 in time, so as to accurately adjust and optimize the running state of the system, and ensure that the whole loader comprehensive thermal management system can stably and efficiently run.

[0039] Specifically, the integrated composite radiator 200 is configured with multiple radiator fans. The radiator fans of the motor electric control radiator 202 and the hydraulic oil radiator 206 can be controlled independently or in a common radiator fan control mode. The rotation speed of the radiator fans can be directly controlled by the whole machine control system 300. However, the protection scope of the present application is not limited to the way of directly controlling the rotation speed of the fans by the whole machine controller 300; if the integrated composite radiator 200 is provided with an independent ATS controller to realize the control of the rotation speed of the fans, it also falls within the protection scope of the present application.

[0040] Obviously, those skilled in the art can make various modifications and changes to the embodiments of the present application without departing from the spirit and scope of the present application. In this way, if these modifications and changes are within the scope of the claims of the present application and their equivalents, the present application also aims to cover these modifications and changes. The word "comprises" does not exclude the presence of other elements or steps not listed in the claims. The simple fact that certain measures are described in mutually different dependent claims does not mean that the combination of these measures cannot be used to advantage. Any reference signs in the claims should not be considered as limiting the scope.

Claims

1. A loader integrated thermal management system, characterized by, The integrated thermal management system is in communication connection with the whole machine control system of the loader, and is used for adjusting the temperature of the battery system and the refrigeration working condition of the cab air conditioning system of the loader.

2. The loader integrated thermal management system of claim 1, wherein, The integrated thermal management control module is in communication connection with the integrated composite radiator and the whole machine control system.

3. The loader integrated thermal management system of claim 2, wherein, The integrated composite radiator comprises a motor electric control radiator, a hydraulic oil radiator and a radiator fan.

4. The loader integrated thermal management system of claim 1, wherein, The condenser, the motor electric control radiator and the hydraulic oil radiator share the radiator fan.

5. The loader integrated thermal management system of claim 4, wherein, The condenser is located at the forefront of the motor electric control radiator and the hydraulic oil radiator along the air inlet direction.

6. The loader integrated thermal management system of claim 4, wherein, The integrated thermal management control module comprises an electronic distribution module, an expansion valve, a heat exchanger, a confluence block, a gas-liquid separator, a compressor and a pressure sensor which are sequentially arranged along the refrigerant transmission direction of the refrigerant pipeline and are in communication connection with the thermal management control module.

7. The loader integrated thermal management system of claim 6, wherein, The electronic distribution module is provided with two refrigerant output ports which are connected with the expansion valve and the evaporating box of the cab air conditioning system.

8. The loader integrated thermal management system of claim 2, wherein, The cab air conditioning system is provided with a thermal expansion valve which is used for adjusting the refrigerant flow entering the air conditioning circuit.

9. The loader integrated thermal management system of claim 1, wherein, The integrated thermal management control module further comprises a water tank, a water pump and a water temperature sensor which are sequentially arranged along the cooling water transmission direction of the cooling water pipeline.

10. The loader integrated thermal management system of claim 2, wherein, The water pump is connected with the water outlet of the water tank and the cooling water inlet of the heat exchanger. A PTC is arranged between the heat exchanger and the water temperature sensor. The motor electric control radiator and the hydraulic oil radiator are respectively provided with an electric control motor cooling water temperature sensor and a hydraulic oil temperature sensor which are in communication connection with the thermal management control module and / or the whole machine control system. The thermal management control module adopts a GD32F305 series microcontroller chip. The radiator fan is provided with a fan controller which is in communication connection with the thermal management control module and / or the whole machine control system.

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