CN118423166B

CN118423166B - Thermal management method for hybrid engineering machinery and hybrid engineering machinery

Info

Publication number: CN118423166B
Application number: CN202410891025.9A
Authority: CN
Inventors: 任永辉; 马箭; 易凌云; 刘子墨; 王超
Original assignee: Zoomlion Heavy Industry Science and Technology Co Ltd
Current assignee: Zoomlion Heavy Industry Science and Technology Co Ltd
Priority date: 2024-07-04
Filing date: 2024-07-04
Publication date: 2024-09-03
Anticipated expiration: 2044-07-04
Also published as: CN118423166A

Abstract

The application discloses a thermal management method for a hybrid power engineering machine and the hybrid power engineering machine, and belongs to the technical field of engineering machines. Comprising the following steps: acquiring the opening state of a retarder, the rotating speed of an engine and the current water temperature and the current air inlet temperature of a water outlet of the engine; under the condition that the current water temperature is not greater than a preset water temperature threshold value and the current air inlet temperature is not greater than a preset air inlet temperature threshold value, determining a first rotating speed according to the current water temperature and a first corresponding relation, determining a second rotating speed according to the current air inlet temperature and a second corresponding relation, and determining the maximum value among the first rotating speed, the second rotating speed and the preset rotating speed as the target rotating speed of the electric control silicone oil fan; determining target control parameters of the electrically controlled silicone oil fan according to the target rotating speed and the rotating speed of the engine; and adjusting the rotating speed of the electric control silicone oil fan according to the target control parameter and the target rotating speed so as to radiate heat of the engine. The application can be applied to engineering machinery with a fuel oil framework and a new energy framework, and can reduce the energy consumption of the whole vehicle.

Description

Thermal management method for hybrid engineering machinery and hybrid engineering machinery

Technical Field

The application relates to the technical field of engineering machinery, in particular to a thermal management method for a hybrid engineering machine and the hybrid engineering machine.

Background

At present, most engineering machinery or commercial vehicles use a diesel engine as a main driving force, a heat dissipation system of the engineering machinery or commercial vehicles generally uses a silicone oil fan as a main heat dissipation source, the power of the silicone oil fan is derived from the engine and is driven by an engine belt pulley, and the power consumption of the engineering machinery or commercial vehicles belongs to a part of the power consumption of engine accessories. For heavy commercial vehicles and engineering machinery, the hybrid architecture thereof has become an important direction of industry development, wherein the hybrid vehicle type with plug-in P2 configuration is dominant. In the mixed mode or the pure fuel mode, the fan control of the diesel engine is mainly influenced by the water temperature of the engine, and when the water temperature of the engine rises, silicone oil enters the working cavity to connect two shafts in the clutch so as to drive the fan to rotate. According to the development trend of the existing engineering machinery, the new energy architecture has a certain scale, but in the prior art, aiming at the heat dissipation method of a matched engine in a hybrid electric vehicle type, the control of an electric control silicone oil fan is not accurate enough, the direct connection of the fan is easy to cause, and the problem of higher energy consumption of the whole vehicle exists. Therefore, the optimization and improvement of the technical scheme is also suitable for engineering machinery with new energy architecture.

Disclosure of Invention

The embodiment of the application aims to provide a thermal management method, a processor, a thermal management device, a hybrid engineering machine and a storage medium for the hybrid engineering machine, which are used for solving the problem of high heat dissipation energy consumption of an engine in a hybrid vehicle type in the prior art.

In order to achieve the above object, a first aspect of the present application provides a thermal management method for a hybrid engineering machine, the hybrid engineering machine including a thermal management system including a first circuit including a retarder and an engine, a second circuit including an air conditioning module and an engine, and a heat dissipation member for dissipating heat from the engine, the heat dissipation member including an electrically controlled silicone oil fan, the thermal management method comprising:

Under the condition that the hybrid engineering machinery is in a hybrid power mode running state or a pure fuel mode running state and an air conditioning module pressure abnormal signal is received, acquiring the starting state of a retarder, the rotating speed of an engine and the current water temperature and the current air inlet temperature of an engine water outlet;

judging whether the current water temperature is greater than a preset water temperature threshold value and whether the current air inlet temperature is greater than a preset air inlet temperature threshold value under the condition that the retarder is in an unopened state;

Determining a first rotating speed of the electric control silicone oil fan according to a first corresponding relation between the current water temperature and a pre-calibrated first corresponding relation, determining a second rotating speed of the electric control silicone oil fan according to a second corresponding relation between the current water temperature and the pre-calibrated second corresponding relation, and determining the maximum value among the first rotating speed, the second rotating speed and the preset rotating speed of the electric control silicone oil fan as a target rotating speed of the electric control silicone oil fan, wherein the first corresponding relation is a corresponding relation between the water temperature and the rotating speed of the electric control silicone oil fan, and the second corresponding relation is a corresponding relation between the air inlet temperature and the rotating speed of the electric control silicone oil fan;

determining target control parameters of the electrically controlled silicone oil fan according to the target rotating speed and the rotating speed of the engine;

and adjusting the rotating speed of the electric control silicone oil fan according to the target control parameter and the target rotating speed so as to radiate heat of the engine.

In the embodiment of the application, determining the target control parameter of the electrically controlled silicone oil fan according to the target rotation speed and the rotation speed of the engine comprises the following steps: under the condition that the ratio of the target rotating speed to the rotating speed of the engine is smaller than a first calibration constant value, determining a preset first control parameter as a target control parameter of the electric control silicone oil fan; determining a preset second control parameter as a target control parameter of the electrically controlled silicone oil fan under the condition that the ratio of the target rotating speed to the rotating speed of the engine is larger than or equal to a first calibration constant value and smaller than a second calibration constant value; and under the condition that the ratio of the target rotating speed to the rotating speed of the engine is larger than or equal to the second calibration constant value, determining the product of the rotating speed of the engine and the second calibration constant value as the target rotating speed, and determining a preset third control parameter as the target control parameter of the electric silicone oil fan.

In an embodiment of the present application, the heat dissipation part further includes an electronic fan, and the thermal management method further includes: under the condition that the retarder is determined to be in an on state, the electronic control silicone oil fan is controlled to be directly connected with the engine, so that the electronic control silicone oil fan operates at the maximum rotating speed, and the electronic fan is controlled to operate at the maximum rotating speed so as to radiate heat of the engine and the retarder.

In an embodiment of the present application, the heat dissipation part further includes an electronic fan, and the thermal management method further includes: and under the condition that the current water temperature is larger than the preset water temperature threshold value and/or the current air inlet temperature is larger than the preset air inlet temperature threshold value, controlling the electric control silicone oil fan to directly connect with the engine so as to enable the electric control silicone oil fan to run at the maximum rotating speed, and controlling the electronic fan to run at the maximum rotating speed so as to radiate heat of the engine.

In an embodiment of the present application, the thermal management system further includes a power battery module, the power battery module is connected in parallel with the air conditioning module, the air conditioning module includes a refrigerant pipeline, the heat dissipation component further includes an electronic fan, and the thermal management method further includes: under the condition that the hybrid engineering machinery is in a hybrid power mode running state or a pure fuel mode running state and receives an air conditioning module refrigerating instruction and a power battery module refrigerating instruction, acquiring the pressure of a refrigerant pipeline; judging whether the ratio of the preset rotating speed of the electrically controlled silicone oil fan to the rotating speed of the engine is larger than a preset threshold value or not under the condition that the pressure of the refrigerant pipeline reaches the preset pressure threshold value; under the condition that the judging ratio is not larger than a preset threshold value, controlling the electrically controlled silicone oil fan to run at the preset rotating speed; and under the condition that the judging ratio is larger than the preset threshold, controlling the electrically controlled silicone oil fan to stop running, determining the target rotating speed of the electronic fan according to the refrigerating instruction of the air conditioner module and the refrigerating instruction of the power battery module, and controlling the electronic fan to run according to the target rotating speed.

In the embodiment of the application, the air conditioning module comprises an air heater, a warm air core body and a blower, wherein the air heater and the warm air core body are used for heating wind generated by the blower, the engine is connected with the warm air core body of the air conditioning module, a first electromagnetic valve is arranged on a water return pipeline of the warm air core body and the engine, and the thermal management method further comprises: acquiring the water temperature of a water outlet of an engine under the condition that the hybrid engineering machinery is in a hybrid power mode running state or a pure fuel mode running state and a heating instruction of an air conditioning module is received; and under the condition that the water temperature exceeds the preset calibration water temperature, closing the air heater, and controlling the first electromagnetic valve to be opened to enable hot water of the engine to enter the warm air core body so as to heat the air conditioning module.

In the embodiment of the application, the thermal management system further comprises a power battery module, the power battery module is connected with the air conditioning module in parallel, the power battery module comprises a power battery, a plate heat exchanger and a water pump, the plate heat exchanger is used for carrying out heat exchange between liquid in the water pump and hot water of the engine, a second electromagnetic valve is arranged on a pipeline between a warm air core in the air conditioning module and the plate heat exchanger, a first electromagnetic valve is arranged on a return pipeline between the warm air core and the engine, and the thermal management method further comprises: controlling the hybrid engineering machinery to run in a hybrid mode or a pure fuel mode under the condition that the environment temperature of the hybrid engineering machinery is 0 ℃ or below; and controlling the first electromagnetic valve and the second electromagnetic valve to be opened so that hot water of the engine enters the plate heat exchanger to heat the power battery.

A second aspect of the application provides a processor configured to perform a thermal management method for a hybrid work machine according to the above.

A third aspect of the present application provides a thermal management device for a hybrid construction machine, the hybrid construction machine including a thermal management system including a first circuit including a retarder and an engine, a second circuit including an air conditioning module and an engine, and a heat dissipation member for dissipating heat from the engine, the heat dissipation member including an electrically controlled silicone oil fan, the thermal management device comprising: the acquisition module is used for acquiring the starting state of the retarder, the rotating speed of the engine and the current water temperature and the current air inlet temperature of the water outlet of the engine under the condition that the hybrid engineering machinery is in a hybrid power mode running state or a pure fuel mode running state and an air conditioning module pressure abnormal signal is received; the judging module is used for judging whether the current water temperature is greater than a preset water temperature threshold value and whether the current air inlet temperature is greater than a preset air inlet temperature threshold value under the condition that the retarder is in an unopened state; the target rotation speed determining module is used for determining a first rotation speed of the electric control silicone oil fan according to a first corresponding relation between the current water temperature and a pre-calibrated first corresponding relation when the current water temperature is not greater than a preset water temperature threshold value and the current air inlet temperature is not greater than a preset air inlet temperature threshold value, determining a second rotation speed of the electric control silicone oil fan according to a second corresponding relation between the current air inlet temperature and the pre-calibrated second corresponding relation, and determining the maximum value among the first rotation speed, the second rotation speed and the preset rotation speed of the electric control silicone oil fan as the target rotation speed of the electric control silicone oil fan, wherein the first corresponding relation is the corresponding relation between the water temperature and the rotation speed of the electric control silicone oil fan, and the second corresponding relation is the corresponding relation between the air inlet temperature and the rotation speed of the electric control silicone oil fan; the target control parameter determining module is used for determining target control parameters of the electrically controlled silicone oil fan according to the target rotating speed and the rotating speed of the engine; and the adjusting module is used for adjusting the rotating speed of the electric control silicone oil fan according to the target control parameter and the target rotating speed so as to radiate heat of the engine.

A fourth aspect of the present application provides a hybrid construction machine including: the heat management system comprises a first loop, a second loop and a heat dissipation part, wherein the first loop comprises a retarder and an engine, the second loop comprises an air conditioning module and an engine, the heat dissipation part is used for dissipating heat of the engine, and the heat dissipation part comprises an electric control silicone oil fan; and a thermal management device for a hybrid construction machine according to the processor or according to the above.

A fifth aspect of the present application provides a machine-readable storage medium having stored thereon instructions for causing a machine to perform a thermal management method for a hybrid engineering machine according to the above.

Through the technical scheme, under the condition that the hybrid engineering machinery is in a hybrid power mode running state or a pure fuel mode running state and an air conditioning module pressure abnormal signal is received, firstly, the starting state of the retarder, the rotating speed of the engine and the current water temperature and the current air inlet temperature of the water outlet of the engine are obtained, and under the condition that the retarder is in an unopened state, whether the current water temperature is greater than a preset water temperature threshold value and whether the current air inlet temperature is greater than the preset air inlet temperature threshold value are judged. Under the condition that the current water temperature is not greater than a preset water temperature threshold value and the current air inlet temperature is not greater than a preset air inlet temperature threshold value, determining a first rotating speed of the electric control silicone oil fan according to a first corresponding relation between the current water temperature and a preset air inlet temperature threshold value, determining a second rotating speed of the electric control silicone oil fan according to a second corresponding relation between the current air inlet temperature and a preset air inlet temperature, and determining the maximum value among the first rotating speed, the second rotating speed and the preset rotating speed of the electric control silicone oil fan as a target rotating speed of the electric control silicone oil fan, wherein the first corresponding relation is a corresponding relation between the water temperature and the rotating speed of the electric control silicone oil fan, and the second corresponding relation is a corresponding relation between the air inlet temperature and the rotating speed of the electric control silicone oil fan. And then determining a target control parameter of the electric control silicone oil fan according to the target rotating speed and the rotating speed of the engine, and finally adjusting the rotating speed of the electric control silicone oil fan according to the target control parameter and the target rotating speed so as to radiate heat of the engine. According to the application, the sectional control of the electric control silicone oil fan can be realized according to the calling requirement of the electric control silicone oil fan, and the direct connection of the electric control silicone oil fan is reduced, so that the energy consumption of the whole vehicle is reduced.

Additional features and advantages of embodiments of the application will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain, without limitation, the embodiments of the application. In the drawings:

FIG. 1 schematically illustrates a block diagram of a thermal management system in accordance with an embodiment of the application;

FIG. 2 schematically illustrates a flow chart of a method of thermal management for a hybrid work machine in accordance with an embodiment of the present disclosure;

FIG. 3 schematically illustrates a block diagram of an engine heat dissipating module according to an embodiment of the present application;

fig. 4 schematically illustrates a block diagram of a refrigerating unit of an air conditioning module according to an embodiment of the present application;

Fig. 5 schematically illustrates a structural view of a heat dissipation unit of a power battery module according to an embodiment of the present application;

fig. 6 schematically illustrates a block diagram of a heat dissipating unit of a power battery module integrated with a refrigerating unit of an air conditioning module according to an embodiment of the present application;

Fig. 7 schematically illustrates a structural view of a heating unit of an air conditioning module according to an embodiment of the present application;

Fig. 8 schematically illustrates a block diagram of a heating unit of an air conditioning module integrated with an engine according to an embodiment of the present application;

fig. 9 schematically shows a structural view of a heating unit of a power battery module integrated with an engine according to an embodiment of the present application;

Fig. 10 schematically illustrates a structural diagram of a thermal management device for a hybrid construction machine according to an embodiment of the present application.

Wherein 1001-the module is acquired; 1002-a judging module; 1003-a target rotational speed determination module; 1004-a target control parameter determination module; 1005-adjustment module.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it should be understood that the detailed description described herein is merely for illustrating and explaining the embodiments of the present application, and is not intended to limit the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present application, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.

FIG. 1 schematically illustrates a block diagram of a thermal management system according to an embodiment of the application. As shown in fig. 1, the thermal management system of the embodiment of the present application integrates an engine thermal management module, an air conditioning module, and a power battery module. The engine thermal management module comprises an intercooler, an intercooler inlet and outlet pipeline, a radiator inlet and outlet water pipe, a retarder inlet and outlet water pipe, an electric control silicone oil fan and an electronic fan. The air conditioning module comprises an electronic fan, a condenser, a compressor, an electronic expansion valve, an electromagnetic valve 3, an evaporator, a warm air core, a blower and an air heater. The power battery module comprises an electronic fan, a condenser, a compressor, an electronic expansion valve, a plate heat exchanger, a water pump and a battery water inlet and outlet pipe. The intercooler and the radiator are engine radiating components, and an intercooler pipeline is air and exhaust mixed gas; the radiator pipeline is filled with cooling liquid, and the retarder radiating waterway is connected with the engine radiating waterway in series; the air conditioning module takes away heat by the condenser, and the part of pipelines are refrigerants. In the integrated thermal management system provided by the embodiment of the application, the heat dissipation is mainly carried out by virtue of the electric control silicone oil fan and the electronic fan, and the heating requirement is mainly derived from the small-cycle hot water of the engine. When no engine management is accessed, the power battery is heated by the self-contained heating film, and the cab air conditioner can heat air by the air heater in a pure electric driving mode to realize heating.

Fig. 2 schematically illustrates a flow chart of a thermal management method for a hybrid work machine according to an embodiment of the application. As shown in fig. 2, an embodiment of the present application provides a thermal management method for a hybrid engineering machine, where the hybrid engineering machine includes a thermal management system, the thermal management system includes a first loop, a second loop, and a heat dissipation component, the first loop includes a retarder and an engine, the second loop includes an air conditioning module and an engine, the heat dissipation component is used for dissipating heat from the engine, and the heat dissipation component includes an electrically controlled silicone oil fan, and the method is applied to a processor, where the thermal management method may include the following steps:

Step S201: under the condition that the hybrid engineering machinery is in a hybrid power mode running state or a pure fuel mode running state and an air conditioning module pressure abnormal signal is received, the starting state of the retarder, the rotating speed of the engine, the current water temperature of a water outlet of the engine and the current air inlet temperature are obtained.

Step S202: and under the condition that the retarder is in an unopened state, judging whether the current water temperature is greater than a preset water temperature threshold value and whether the current air inlet temperature is greater than a preset air inlet temperature threshold value.

Step S203: under the condition that the current water temperature is not greater than a preset water temperature threshold value and the current air inlet temperature is not greater than a preset air inlet temperature threshold value, determining a first rotating speed of the electric control silicone oil fan according to a first corresponding relation between the current water temperature and a preset air inlet temperature threshold value, determining a second rotating speed of the electric control silicone oil fan according to a second corresponding relation between the current air inlet temperature and a preset air inlet temperature, and determining the maximum value among the first rotating speed, the second rotating speed and the preset rotating speed of the electric control silicone oil fan as a target rotating speed of the electric control silicone oil fan, wherein the first corresponding relation is a corresponding relation between the water temperature and the rotating speed of the electric control silicone oil fan, and the second corresponding relation is a corresponding relation between the air inlet temperature and the rotating speed of the electric control silicone oil fan.

Step S204: and determining target control parameters of the electrically controlled silicone oil fan according to the target rotating speed and the rotating speed of the engine.

Step S205: and adjusting the rotating speed of the electric control silicone oil fan according to the target control parameter and the target rotating speed so as to radiate heat of the engine.

It will be appreciated that electrically controlled silicone oil fans are an important component in engine cooling systems that use silicone oil as a transmission medium to drive the rotation of the fan, with the speed of the electrically controlled silicone oil fan typically being related to, but not directly connected to, the speed of the engine. The direct connection of the electrically controlled silicone fan means that in some cases the connection between the electrically controlled silicone fan and the engine is directly locked so that the rotational speed of the fan is completely synchronized with the rotational speed of the engine. This typically occurs when the engine requires maximum heat dissipation, such as during high load or high temperature conditions. At this time, the fan is operated at a maximum rotational speed, thereby rapidly lowering the engine temperature. However, when the electrically controlled silicone oil fan is directly connected, if the electrically controlled silicone oil fan needs to be disconnected (i.e., the directly connected state is released), a certain time (e.g., 1-2 minutes) is usually required. Thus, the whole vehicle has higher energy consumption. Based on this, the embodiment of the application provides a thermal management method for a hybrid engineering machine, which can realize control of an electric silicone oil fan, an electronic fan, a compressor and an electromagnetic valve in an integrated thermal management system according to heat dissipation requirements of all components, so as to realize accessory control in modes of engine heat dissipation, retarder heat dissipation, cabin air conditioner refrigeration, power battery heat dissipation, cabin air conditioner heating, power battery heating, air conditioner and power battery simultaneous refrigeration, coupling of engine waste heat recovery and power battery heating and air conditioner heating, air conditioner refrigeration and engine heat dissipation, and cabin heating and power battery refrigeration simultaneous demand and the like. It should be noted that, the technical solution of the embodiment of the present application is not only applicable to engineering machinery with new energy architecture, such as hybrid vehicles, but also applicable to fuel vehicle types.

Fig. 3 schematically shows a structural view of an engine heat dissipation module according to an embodiment of the present application. As shown in fig. 3, the engine heat dissipation module includes an intercooler, an intercooler inlet and outlet pipe, a radiator inlet and outlet pipe, a retarder inlet and outlet pipe, an electrically controlled silicone oil fan and an electronic fan. The rotation speed request of the electrically controlled silicone oil fan mainly comes from the water temperature of the engine, the air inlet temperature, the opening switch of the retarder and the abnormal pressure request in the air conditioning module. When the hybrid engineering machinery is in the hybrid mode running or the pure fuel mode running and the air conditioning module pressure abnormality signal is received, the processor firstly judges whether the retarder is started according to the acquired starting state of the retarder. If the retarder is not opened, judging whether the current water temperature and the current air inlet temperature of the water outlet of the engine are larger than a preset water temperature threshold value and a preset air inlet temperature threshold value respectively. Under the condition that the current water temperature is not greater than the preset water temperature threshold value and the current air inlet temperature is not greater than the preset air inlet temperature threshold value, determining the rotating speed of the electric control silicone oil fan, namely the first rotating speed S1, according to a first corresponding relation calibrated in advance, and determining the rotating speed of the electric control silicone oil fan, namely the second rotating speed S2, according to a second corresponding relation calibrated in advance. The first corresponding relation is the corresponding relation between the water temperature and the rotating speed of the electric control silicone oil fan, and the second corresponding relation is the corresponding relation between the air inlet temperature and the rotating speed of the electric control silicone oil fan. In one example, the first correspondence may be a curve of water temperature versus rotational speed of the electrically controlled silicone oil fan, and the second correspondence may be a curve of intake air temperature versus rotational speed of the electrically controlled silicone oil fan. And then determining the maximum value Smax of the first rotating speed S1, the second rotating speed S2 and the preset rotating speed S of the electric control silicone oil fan as the target rotating speed of the electric control silicone oil fan according to the rotating speed value of the electric control silicone oil fan requested by the part needing heat dissipation. After the target rotating speed is obtained, calculating the ratio of the target rotating speed to the rotating speed of the engine, judging the section where the ratio is located by combining with a pre-calibrated constant value, determining target control parameters in a plurality of preset control parameters according to the section where the ratio is located, and finally adjusting the rotating speed of the electrically controlled silicone oil fan to the target rotating speed by using the target control parameters so as to radiate heat of the engine. Therefore, the sectional control of the electric control silicone oil fan can be realized according to the calling requirement of the electric control silicone oil fan, and the direct connection of the electric control silicone oil fan is reduced, so that the energy consumption of the whole vehicle is reduced.

In the embodiment of the present application, step S204: determining a target control parameter of the electrically controlled silicone oil fan according to the target rotation speed and the rotation speed of the engine may include: under the condition that the ratio of the target rotating speed to the rotating speed of the engine is smaller than a first calibration constant value, determining a preset first control parameter as a target control parameter of the electric control silicone oil fan; determining a preset second control parameter as a target control parameter of the electrically controlled silicone oil fan under the condition that the ratio of the target rotating speed to the rotating speed of the engine is larger than or equal to a first calibration constant value and smaller than a second calibration constant value; and under the condition that the ratio of the target rotating speed to the rotating speed of the engine is larger than or equal to the second calibration constant value, determining the product of the rotating speed of the engine and the second calibration constant value as the target rotating speed, and determining a preset third control parameter as the target control parameter of the electric silicone oil fan.

It is understood that the control parameters refer to the P and I terms of the PI controller. The pre-calibrated constant value C1 comprises a first calibration constant value and a second calibration constant value C2, wherein C1 < C2.

Specifically, if the ratio Smax/N of the target rotation speed to the engine rotation speed is smaller than C1, it indicates that the electrically controlled silicone oil fan is in a low rotation speed operation requirement, and in this interval, the calibration target is to increase the response speed of the target rotation speed of the fan, so as to achieve fast response of the rotation speed of the fan, and the control parameters for the electrically controlled silicone oil fan are calibrated according to the preset first control parameters.

If C1 is less than or equal to Smax/N is less than C2, the electric control silicone oil fan is in a common and easily-controlled rotating speed range. In the interval, the calibration target is to reduce the response speed of the target rotating speed of the fan, so that the phenomenon that the rotating speed of the fan is overshot to cause direct connection is avoided, and the control parameters for the electrically controlled silicone oil fan are calibrated according to the preset second control parameters.

If Smax/N is more than or equal to C2, setting the target rotating speed of the electric control silicone oil fan as NxC 2, calibrating control parameters for the electric control silicone oil fan according to preset third control parameters, and adding a fan control P term to quickly remove negative integral of the I term so as to realize quick response during later-stage speed reduction of the fan.

In an embodiment of the present application, the heat dissipation part further includes an electronic fan, and the thermal management method may further include: under the condition that the retarder is determined to be in an on state, the electronic control silicone oil fan is controlled to be directly connected with the engine, so that the electronic control silicone oil fan operates at the maximum rotating speed, and the electronic fan is controlled to operate at the maximum rotating speed so as to radiate heat of the engine and the retarder.

Specifically, when the hybrid engineering machinery is in a hybrid mode or a pure fuel mode, and an air conditioning module pressure abnormality signal is received, the processor judges whether the retarder is started according to the acquired starting state of the retarder, if so, the retarder works and needs to radiate heat, at the moment, the processor controls the electric control silicone oil fan to be directly connected with the engine, and controls the electronic fan to run at full speed at the maximum rotating speed so as to radiate heat for the engine and the retarder, so that the service time of the retarder is prolonged.

In an embodiment of the present application, the heat dissipation part further includes an electronic fan, and the thermal management method may further include: and under the condition that the current water temperature is larger than the preset water temperature threshold value and/or the current air inlet temperature is larger than the preset air inlet temperature threshold value, controlling the electric control silicone oil fan to directly connect with the engine so as to enable the electric control silicone oil fan to run at the maximum rotating speed, and controlling the electronic fan to run at the maximum rotating speed so as to radiate heat of the engine.

Specifically, when the processor determines that any one of the current water temperature of the water outlet of the engine and the current air inlet temperature exceeds the corresponding water temperature threshold value and the corresponding temperature threshold value, the processor controls the electrically controlled silicone oil fan to be directly connected with the engine, and controls the electronic fan to run at full speed according to the maximum rotation speed so as to radiate heat of the engine and the retarder.

Fig. 4 schematically illustrates a block diagram of a refrigeration unit of an air conditioning module according to an embodiment of the present application. As shown in fig. 4, the refrigerating unit of the air conditioning module includes an electronic fan, a condenser, a compressor, an electronic expansion valve, a solenoid valve 3, an evaporator, and a blower. When the cab of the hybrid engineering machinery has a refrigerating requirement, the processor firstly controls the air blower and the electromagnetic valve 3 to be opened so that the compressor starts to work to heat and boost the refrigerant in the refrigerant pipeline, thereby reducing the temperature of the front-end evaporator, and at the moment, the air blower blows air to the evaporator to refrigerate the cab. When the pressure of the refrigerant rises to a pressure threshold, the electronic fan dissipates heat of the condenser so as to cool and decompress the refrigerant. When the temperature sensor of the evaporator detects that the temperature is lower than the set temperature threshold, the processor closes the electromagnetic valve 3 and reduces the rotation speed of the compressor at the same time so as to reduce the refrigerating capacity of the cab and avoid frosting on the surface of the evaporator.

Fig. 5 schematically illustrates a structural view of a heat dissipation unit of a power battery module according to an embodiment of the present application. As shown in fig. 5, the heat dissipation unit of the power battery module includes an electronic fan, a condenser, a compressor, an electronic expansion valve, a plate heat exchanger, a water pump, and a battery water inlet and outlet pipe. When the power battery module has a cold requirement, the water pump starts to work, and the heat of the power battery is taken away by natural circulation of the waterway. When the temperature of the power battery reaches a certain threshold value, the compressor starts to work, the electronic expansion valve is opened through temperature rise and pressure rise, so that the temperature of the front end plate type heat exchanger is reduced, and the temperature of cooling liquid in a pipeline is taken away, so that heat dissipation of the power battery module is realized.

Fig. 6 schematically illustrates a block diagram of a heat dissipating unit of a power battery module integrated with a refrigerating unit of an air conditioning module according to an embodiment of the present application. As shown in fig. 6, the integrated part includes a power battery water inlet and outlet pipe, a water pump, a plate heat exchanger (for liquid-gas exchange), an air conditioner compressor, a condenser, an electronic fan, an electronic expansion valve, a solenoid valve 3, an evaporator, and a blower. The air conditioner refrigerating unit is connected with the battery refrigerating unit in parallel, and shares a set of condenser, and the condenser can realize heat exchange by means of an electronic fan or an electric control silicone oil fan. When the air conditioner and the power battery of the cab need to be refrigerated at the same time, the processor controls the compressor and the electromagnetic valve 3 to be opened, and the rotating speed of the electronic fan is controlled to be the maximum value of the requirements of the compressor and the electromagnetic valve. If there is a conflict in control of some parts, the control strategy of the accessories is prioritized by the refrigeration of the power battery.

In an embodiment of the present application, the thermal management system may further include a power battery module, the power battery module is connected in parallel with the air conditioning module, the air conditioning module includes a refrigerant pipeline, the heat dissipation component further includes an electronic fan, and the thermal management method may further include: the hybrid engineering machinery is in a hybrid power mode running state or a pure fuel mode running state, and under the condition that an air conditioning module refrigerating instruction and a power battery module refrigerating instruction are received, the pressure of a refrigerant pipeline is obtained; judging whether the ratio of the preset rotating speed of the electrically controlled silicone oil fan to the rotating speed of the engine is larger than a preset threshold value or not under the condition that the pressure of the refrigerant pipeline reaches the preset pressure threshold value; under the condition that the judging ratio is not greater than a preset threshold value, controlling the electrically controlled silicone oil fan to run at a preset rotating speed; and under the condition that the judging ratio is larger than the preset threshold, controlling the electrically controlled silicone oil fan to stop running, determining the target rotating speed of the electronic fan according to the refrigerating instruction of the air conditioner module and the refrigerating instruction of the power battery module, and controlling the electronic fan to run according to the target rotating speed.

Specifically, as the pressure of the refrigerant pipeline is increased due to the refrigeration of the battery module or the refrigeration of the air conditioner module, when the engine, the battery module and the air conditioner module all have refrigeration requirements, the processor acquires the pressure of the refrigerant pipeline in real time, and when the pressure of the refrigerant pipeline reaches a preset pressure threshold value, the relation between the preset rotating speed of the electric control silicone oil fan and the rotating speed of the engine is judged, namely whether the ratio of the preset rotating speed S of the electric control silicone oil fan to the rotating speed N of the engine is larger than the preset threshold value is judged. When the preset rotating speed S/the engine rotating speed N is less than or equal to a preset threshold value, the electrically controlled silicone oil fan responds to the calibrated rotating speed S; when the preset rotating speed S/the engine rotating speed N is larger than the preset threshold value, the electric silicone oil fan does not respond to operation, and the electronic fan responds to the larger value of the rotating speed values required by the air conditioning requirement of the cab and the requirement of the power battery.

Fig. 7 schematically illustrates a structural view of a heating unit of an air conditioning module according to an embodiment of the present application. As shown in fig. 7, the heating unit of the air conditioning module includes an electric air heater and a blower, when the vehicle is in a parking state or a pure electric driving state, if the air conditioning heating mode is turned on, the air heater starts to operate, and the blower adjusts the air quantity of the blower according to the manual adjustment of the driver, so that the product hot air heats the cab.

Fig. 8 schematically illustrates a block diagram of a heating unit of an air conditioning module integrated with an engine according to an embodiment of the present application. As shown in fig. 8, in an embodiment of the present application, an air conditioning module includes an air heater, a warm air core, and a blower, where the air heater and the warm air core are used to heat wind generated by the blower, an engine is connected to the warm air core of the air conditioning module, a first electromagnetic valve is disposed on a water return line of the warm air core and the engine, and the thermal management method may further include: acquiring the water temperature of a water outlet of an engine under the condition that the hybrid engineering machinery is in a hybrid power mode running state or a pure fuel mode running state and a heating instruction of an air conditioning module is received; and under the condition that the water temperature exceeds the preset calibration water temperature, closing the air heater, and controlling the first electromagnetic valve to be opened to enable hot water of the engine to enter the warm air core body so as to heat the air conditioning module.

Specifically, when the hybrid engineering machine is in the pure fuel mode or the hybrid mode, in the air-conditioning heating mode, when the processor detects that the water temperature of the engine exceeds the preset calibration water temperature, for example, 40 ℃, the air-conditioning electric heating mode is closed, and the mode is switched to the mode of heating the air conditioner of the cab by using the waste heat of the engine. At this time, the processor controls the first solenoid valve, i.e., solenoid valve 1, to open, and the engine hot water enters the warm air core, and heats the cabin by heating the air generated by the blower. In the working state, the energy consumption of the whole vehicle is not increased.

Fig. 9 schematically shows a structural view of a heating unit of a power battery module integrated with an engine according to an embodiment of the present application. As shown in fig. 9, in an embodiment of the present application, the thermal management system further includes a power battery module, where the power battery module is connected in parallel with the air conditioning module, the power battery module includes a power battery, a plate heat exchanger, and a water pump, the plate heat exchanger is used to exchange heat between liquid in the water pump and hot water of the engine, a second electromagnetic valve is disposed on a pipeline between a warm air core in the air conditioning module and the plate heat exchanger, and a first electromagnetic valve is disposed on a return pipeline between the warm air core and the engine, and the thermal management method may further include: controlling the hybrid engineering machinery to run in a hybrid mode or a pure fuel mode under the condition that the environment temperature of the hybrid engineering machinery is 0 ℃ or below; and controlling the first electromagnetic valve and the second electromagnetic valve to be opened so that hot water of the engine enters the plate heat exchanger to heat the power battery.

Specifically, when the hybrid construction machine is in a low temperature, e.g., 0 ℃ or less, the vehicle starts the pure fuel mode or the hybrid mode running because the power battery temperature is lower than 0 ℃ and output is not allowed. At the moment, the electromagnetic valve 1, namely the first electromagnetic valve, and the electromagnetic valve 2, namely the second electromagnetic valve, are opened, the water pump starts to work, and hot water of the engine enters the warm air core body and the plate heat exchanger. After the water pump starts to work, the water channel of the power battery can be heated by the hot water amount entering the plate heat exchanger. At the moment, if the cab does not have the air conditioner heat demand, the blower does not work; if the cab has the air conditioning and heating requirements, the blower starts to work.

Therefore, hot water of the engine is connected into the air conditioning system and the power battery heating system, and under a low-temperature environment, the vehicle is driven by the engine to drive preferentially to drive so as to improve the water temperature, so that the power battery is heated, the heating power consumption of the power battery is reduced, and the energy utilization rate of the whole vehicle is improved.

The embodiment of the application provides a processor configured to execute the thermal management method for the hybrid engineering machine.

Specifically, in an embodiment of the present application, a processor may be configured to: under the condition that the hybrid engineering machinery is in a hybrid power mode running state or a pure fuel mode running state and an air conditioning module pressure abnormal signal is received, acquiring the starting state of a retarder, the rotating speed of an engine and the current water temperature and the current air inlet temperature of an engine water outlet; judging whether the current water temperature is greater than a preset water temperature threshold value and whether the current air inlet temperature is greater than a preset air inlet temperature threshold value under the condition that the retarder is in an unopened state; determining a first rotating speed of the electric control silicone oil fan according to a first corresponding relation between the current water temperature and a pre-calibrated first corresponding relation, determining a second rotating speed of the electric control silicone oil fan according to a second corresponding relation between the current water temperature and the pre-calibrated second corresponding relation, and determining the maximum value among the first rotating speed, the second rotating speed and the preset rotating speed of the electric control silicone oil fan as a target rotating speed of the electric control silicone oil fan, wherein the first corresponding relation is a corresponding relation between the water temperature and the rotating speed of the electric control silicone oil fan, and the second corresponding relation is a corresponding relation between the air inlet temperature and the rotating speed of the electric control silicone oil fan; determining target control parameters of the electrically controlled silicone oil fan according to the target rotating speed and the rotating speed of the engine; and adjusting the rotating speed of the electric control silicone oil fan according to the target control parameter and the target rotating speed so as to radiate heat of the engine.

In an embodiment of the present application, the processor may be further configured to: under the condition that the ratio of the target rotating speed to the rotating speed of the engine is smaller than a first calibration constant value, determining a preset first control parameter as a target control parameter of the electric control silicone oil fan; determining a preset second control parameter as a target control parameter of the electrically controlled silicone oil fan under the condition that the ratio of the target rotating speed to the rotating speed of the engine is larger than or equal to a first calibration constant value and smaller than a second calibration constant value; and under the condition that the ratio of the target rotating speed to the rotating speed of the engine is larger than or equal to the second calibration constant value, determining the product of the rotating speed of the engine and the second calibration constant value as the target rotating speed, and determining a preset third control parameter as the target control parameter of the electric silicone oil fan.

In an embodiment of the present application, the processor may be further configured to: under the condition that the retarder is determined to be in an on state, the electronic control silicone oil fan is controlled to be directly connected with the engine, so that the electronic control silicone oil fan operates at the maximum rotating speed, and the electronic fan is controlled to operate at the maximum rotating speed so as to radiate heat of the engine and the retarder.

In an embodiment of the present application, the processor may be further configured to: and under the condition that the current water temperature is larger than the preset water temperature threshold value and/or the current air inlet temperature is larger than the preset air inlet temperature threshold value, controlling the electric control silicone oil fan to directly connect with the engine so as to enable the electric control silicone oil fan to run at the maximum rotating speed, and controlling the electronic fan to run at the maximum rotating speed so as to radiate heat of the engine.

In an embodiment of the present application, the processor may be further configured to: under the condition that the hybrid engineering machinery is in a hybrid power mode running state or a pure fuel mode running state and receives an air conditioning module refrigerating instruction and a power battery module refrigerating instruction, acquiring the pressure of a refrigerant pipeline; judging whether the ratio of the preset rotating speed of the electrically controlled silicone oil fan to the rotating speed of the engine is larger than a preset threshold value or not under the condition that the pressure of the refrigerant pipeline reaches the preset pressure threshold value; under the condition that the judging ratio is not greater than a preset threshold value, controlling the electrically controlled silicone oil fan to run at a preset rotating speed; and under the condition that the judging ratio is larger than the preset threshold, controlling the electrically controlled silicone oil fan to stop running, determining the target rotating speed of the electronic fan according to the refrigerating instruction of the air conditioner module and the refrigerating instruction of the power battery module, and controlling the electronic fan to run according to the target rotating speed.

In an embodiment of the present application, the processor may be further configured to: acquiring the water temperature of a water outlet of an engine under the condition that the hybrid engineering machinery is in a hybrid power mode running state or a pure fuel mode running state and a heating instruction of an air conditioning module is received; and under the condition that the water temperature exceeds the preset calibration water temperature, closing the air heater, and controlling the first electromagnetic valve to be opened to enable hot water of the engine to enter the warm air core body so as to heat the air conditioning module.

In an embodiment of the present application, the processor may be further configured to: controlling the hybrid engineering machinery to run in a hybrid mode or a pure fuel mode under the condition that the environment temperature of the hybrid engineering machinery is 0 ℃ or below; and controlling the first electromagnetic valve and the second electromagnetic valve to be opened so that hot water of the engine enters the plate heat exchanger to heat the power battery.

Fig. 10 schematically illustrates a structural diagram of a thermal management device for a hybrid construction machine according to an embodiment of the present application. As shown in fig. 10, an embodiment of the present application provides a thermal management device for a hybrid engineering machine, where the hybrid engineering machine includes a thermal management system, the thermal management system includes a first circuit, a second circuit, and a heat dissipation component, the first circuit includes a retarder and an engine, the second circuit includes an air conditioning module and an engine, the heat dissipation component is used for dissipating heat from the engine, the heat dissipation component includes an electrically controlled silicone oil fan, and the thermal management device may include:

The acquiring module 1001 is configured to acquire, when the hybrid engineering machine is in a hybrid mode running state or a pure fuel mode running state and an air conditioning module pressure anomaly signal is received, an on state of the retarder, a rotational speed of the engine, and a current water temperature and a current intake air temperature of a water outlet of the engine;

a judging module 1002, configured to judge whether the current water temperature is greater than a preset water temperature threshold and whether the current air intake temperature is greater than a preset air intake temperature threshold when the retarder is in an unopened state;

the target rotation speed determining module 1003 is configured to determine, when it is determined that the current water temperature is not greater than the preset water temperature threshold and the current intake air temperature is not greater than the preset intake air temperature threshold, determine a first rotation speed of the electrically controlled silicone oil fan according to a first correspondence between the current water temperature and a preset intake air temperature, determine a second rotation speed of the electrically controlled silicone oil fan according to a second correspondence between the current intake air temperature and a preset intake air temperature, and determine a maximum value among the first rotation speed, the second rotation speed and the preset rotation speed of the electrically controlled silicone oil fan as a target rotation speed of the electrically controlled silicone oil fan, where the first correspondence is a correspondence between the water temperature and the rotation speed of the electrically controlled silicone oil fan, and the second correspondence is a correspondence between the intake air temperature and the rotation speed of the electrically controlled silicone oil fan;

a target control parameter determining module 1004, configured to determine a target control parameter of the electrically controlled silicone oil fan according to a target rotation speed and a rotation speed of the engine;

the adjusting module 1005 is configured to adjust a rotation speed of the electrically controlled silicone oil fan according to the target control parameter and the target rotation speed to dissipate heat of the engine.

The embodiment of the application also provides a hybrid engineering machine, which comprises: the heat management system comprises a first loop, a second loop and a heat dissipation part, wherein the first loop comprises a retarder and an engine, the second loop comprises an air conditioning module and an engine, the heat dissipation part is used for dissipating heat of the engine, and the heat dissipation part comprises an electric control silicone oil fan; and a thermal management device for a hybrid construction machine according to the processor or according to the above.

The embodiment of the application also provides a machine-readable storage medium, wherein the machine-readable storage medium is stored with instructions for causing a machine to execute the thermal management method for the hybrid engineering machine.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

In one typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

The memory may include volatile memory in a computer-readable medium, random Access Memory (RAM) and/or nonvolatile memory, etc., such as Read Only Memory (ROM) or flash RAM. Memory is an example of a computer-readable medium.

Computer readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.

The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and variations of the present application will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the application are to be included in the scope of the claims of the present application.

Claims

1. A thermal management method for a hybrid work machine, the hybrid work machine comprising a thermal management system including a first circuit including a retarder and an engine, a second circuit including an air conditioning module and the engine, and a heat dissipation member for dissipating heat from the engine, the heat dissipation member including an electrically controlled silicone oil fan, the thermal management method comprising:

Acquiring the starting state of the retarder, the rotating speed of the engine and the current water temperature and the current air inlet temperature of the water outlet of the engine when the hybrid engineering machinery is in a hybrid power mode running state or a pure fuel mode running state and an air conditioning module pressure abnormal signal is received;

determining a first rotating speed of the electric control silicone oil fan according to a first corresponding relation between the current water temperature and a pre-calibrated first corresponding relation, determining a second rotating speed of the electric control silicone oil fan according to a second corresponding relation between the current water temperature and the pre-calibrated second corresponding relation, and determining the maximum value among the first rotating speed, the second rotating speed and the preset rotating speed of the electric control silicone oil fan as a target rotating speed of the electric control silicone oil fan, wherein the first corresponding relation is a corresponding relation between the water temperature and the rotating speed of the electric control silicone oil fan;

2. The method of claim 1, wherein determining the target control parameter of the electrically controlled silicone oil fan based on the target rotational speed and the rotational speed of the engine comprises:

Under the condition that the ratio of the target rotating speed to the rotating speed of the engine is smaller than a first calibration constant value, determining a preset first control parameter as a target control parameter of the electrically controlled silicone oil fan;

Determining a preset second control parameter as a target control parameter of the electrically controlled silicone oil fan under the condition that the ratio of the target rotating speed to the rotating speed of the engine is larger than or equal to the first calibration constant value and smaller than a second calibration constant value;

Determining that the product of the rotation speed of the engine and the second calibration constant value is the target rotation speed under the condition that the ratio of the target rotation speed to the rotation speed of the engine is greater than or equal to the second calibration constant value, and determining a preset third control parameter as a target control parameter of the electrically controlled silicone oil fan;

wherein the first calibration constant value is less than the second calibration constant value.

3. The thermal management method of claim 1, wherein the heat sink member further comprises an electronic fan, the thermal management method further comprising:

And under the condition that the retarder is determined to be in an on state, controlling the electric control silicone oil fan to be directly connected with the engine so as to enable the electric control silicone oil fan to run at the maximum rotating speed, and controlling the electronic fan to run at the maximum rotating speed so as to radiate heat of the engine and the retarder.

4. The thermal management method of claim 1, wherein the heat sink member further comprises an electronic fan, the thermal management method further comprising:

And under the condition that the current water temperature is larger than a preset water temperature threshold value and/or the current air inlet temperature is larger than a preset air inlet temperature threshold value, controlling the electric control silicone oil fan to be directly connected with the engine so as to enable the electric control silicone oil fan to run at the maximum rotating speed, and controlling the electronic fan to run at the maximum rotating speed so as to radiate heat of the engine.

5. The thermal management method of claim 1, wherein the thermal management system further comprises a power battery module connected in parallel with the air conditioning module, the air conditioning module comprising a refrigerant line, the heat dissipating component further comprising an electronic fan, the thermal management method further comprising:

Acquiring the pressure of the refrigerant pipeline under the condition that the hybrid engineering machinery is in a hybrid power mode driving state or a pure fuel mode driving state and receives an air conditioning module refrigerating instruction and a power battery module refrigerating instruction;

Judging whether the ratio of the preset rotating speed of the electric control silicone oil fan to the rotating speed of the engine is larger than a preset threshold value or not under the condition that the pressure of the refrigerant pipeline reaches the preset pressure threshold value;

controlling the electrically controlled silicone oil fan to run at the preset rotating speed under the condition that the ratio is not larger than a preset threshold value;

and under the condition that the ratio is larger than a preset threshold, controlling the electrically controlled silicone oil fan to stop running, determining the target rotating speed of the electronic fan according to the refrigerating instruction of the air conditioner module and the refrigerating instruction of the power battery module, and controlling the electronic fan to run according to the target rotating speed.

6. The thermal management method according to claim 1, wherein the air conditioning module includes an air heater, a warm air core, and a blower, the air heater and the warm air core being configured to heat wind generated by the blower, the engine being connected to the warm air core of the air conditioning module, the warm air core and a return water line of the engine being provided with a first electromagnetic valve, the thermal management method further comprising:

Acquiring the water temperature of the water outlet of the engine under the condition that the hybrid engineering machinery is in a hybrid power mode running state or a pure fuel mode running state and a heating instruction of an air conditioning module is received;

And under the condition that the water temperature exceeds the preset calibration water temperature, closing the air heater, and controlling the first electromagnetic valve to be opened to enable hot water of the engine to enter the warm air core body so as to heat the air conditioning module.

7. The thermal management method of claim 1, wherein the thermal management system further comprises a power battery module connected in parallel with the air conditioning module, the power battery module comprising a power battery, a plate heat exchanger and a water pump, the plate heat exchanger being used for exchanging heat between liquid in the water pump and hot water of the engine, the engine being connected to a warm air core of the air conditioning module, a first solenoid valve being provided on a return line of the warm air core and the engine, a second solenoid valve being provided on a line intermediate the warm air core and the plate heat exchanger, the thermal management method further comprising:

controlling the hybrid engineering machinery to run in a hybrid mode or a pure fuel mode under the condition that the environment temperature of the hybrid engineering machinery is 0 ℃ or below;

And controlling the first electromagnetic valve and the second electromagnetic valve to be opened so that hot water of the engine enters the plate heat exchanger to heat the power battery.

8. A processor configured to perform the thermal management method for a hybrid work machine according to any one of claims 1 to 7.

9. A thermal management device for a hybrid construction machine, the hybrid construction machine comprising a thermal management system, the thermal management system comprising a first circuit including a retarder and an engine, a second circuit including an air conditioning module and the engine, and a heat sink for dissipating heat from the engine, the heat sink comprising an electrically controlled silicone oil fan, the thermal management device comprising:

The acquisition module is used for acquiring the opening state of the retarder, the rotating speed of the engine and the current water temperature and the current air inlet temperature of the water outlet of the engine under the condition that the hybrid engineering machinery is in a hybrid power mode running state or a pure fuel mode running state and an air conditioner module pressure abnormal signal is received;

the judging module is used for judging whether the current water temperature is greater than a preset water temperature threshold value and whether the current air inlet temperature is greater than a preset air inlet temperature threshold value under the condition that the retarder is in an unopened state;

The target rotation speed determining module is used for determining a first rotation speed of the electric control silicone oil fan according to a first corresponding relation of the current water temperature and the pre-calibration under the condition that the current water temperature is not greater than a preset water temperature threshold value and the current air inlet temperature is not greater than a preset air inlet temperature threshold value, determining a second rotation speed of the electric control silicone oil fan according to a second corresponding relation of the current air inlet temperature and the pre-calibration, and determining the maximum value among the first rotation speed, the second rotation speed and the preset rotation speed of the electric control silicone oil fan as the target rotation speed of the electric control silicone oil fan, wherein the first corresponding relation is the corresponding relation between the water temperature and the rotation speed of the electric control silicone oil fan, and the second corresponding relation is the corresponding relation between the air inlet temperature and the rotation speed of the electric control silicone oil fan;

The target control parameter determining module is used for determining target control parameters of the electrically controlled silicone oil fan according to the target rotating speed and the rotating speed of the engine;

And the adjusting module is used for adjusting the rotating speed of the electric control silicone oil fan according to the target control parameter and the target rotating speed so as to radiate heat of the engine.

10. A hybrid construction machine, comprising:

The heat management system comprises a first loop, a second loop and a heat dissipation part, wherein the first loop comprises a retarder and an engine, the second loop comprises an air conditioning module and the engine, the heat dissipation part is used for dissipating heat of the engine, and the heat dissipation part comprises an electric control silicone oil fan; and a processor according to claim 8 or a thermal management device for a hybrid working machine according to claim 9.

11. An engineering vehicle, comprising:

An engine;

a power battery module;

An air conditioning module;

a heat radiating member; and a processor according to claim 8 or a thermal management device for a hybrid working machine according to claim 9.

12. A machine-readable storage medium having instructions stored thereon for causing a machine to perform the thermal management method for a hybrid work machine according to any one of claims 1 to 7.