Thermal management method and system and engineering mechanical equipment
By collecting and storing heat from the range extender through a thermal management system and preheating key components at low temperatures, the problem of starting and operating hybrid range-extended engineering machinery in low-temperature environments has been solved, improving the environmental adaptability and performance of the equipment.
Patent Information
- Application Number
- CN202511419639.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-30
- Publication Date
- 2025-11-18
AI Technical Summary
Hybrid range-extended construction machinery equipment suffers from problems such as difficulty in starting the range extender, degradation of the charging and discharging performance of the power battery, and poor overall machine performance in low-temperature environments.
A thermal management system is adopted, which collects the heat generated by the range extender through a heat collection device and stores it in a heat storage device. In low-temperature environments, the heat from the heat storage device is used to preheat the range extender, power battery and hydraulic oil.
It improves the performance of hybrid range-extended engineering machinery at low temperatures, enhances environmental adaptability, reduces energy consumption, shortens the start-up time of the range extender, and improves the charging and discharging performance of the power battery and the response speed of the hydraulic system.
Smart Images
Figure CN120963303A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present disclosure relates to the technical field of engineering machinery, and in particular to a thermal management method, system and engineering machinery device. BACKGROUND
[0002] With the breakthrough of new energy technology, new energy engineering machinery devices have rapidly developed. Because the hybrid range extender engineering machinery device can effectively reduce energy consumption and make up for the short board of pure electric engineering machinery devices in energy supplementing, the installed capacity of hybrid range extender engineering machinery devices has rapidly increased in recent years.
[0003] The range extender is mainly applied to engineering machinery devices such as loaders and wide-body dump trucks. In actual application, the working environment of the hybrid range extender engineering machinery device is often complex and harsh. For example, the engineering machinery device may need to work in an extreme temperature environment (such as a low temperature environment and a high temperature environment). However, the range extender on the hybrid range extender engineering machinery device has a problem of difficult starting in a low temperature environment. At the same time, the hybrid range extender engineering machinery device also has problems such as a significant attenuation of the power battery charging and discharging performance, even the inability to charge and discharge, and poor running performance of the whole machine in a low temperature environment. SUMMARY
[0004] According to a first aspect of the present disclosure, a thermal management system is provided, comprising: a heat collection device configured to collect heat generated by a range extender of an engineering machinery device; a heat storage device connected to the heat collection device and configured to store heat; a preheating device connected to the heat storage device; and a controller configured to: in a case where a temperature of the range extender and a temperature of the heat storage device satisfy a heat collection condition, control the heat collection device to collect heat generated by the range extender and store the heat generated by the range extender in the heat storage device; and in a case where an ambient temperature of the engineering machinery device is lower than an ambient temperature threshold, control the preheating device to obtain heat in the heat storage device and preheat at least one of the range extender, a power battery and hydraulic oil of the engineering machinery device based on the obtained heat.
[0005] In some embodiments, the heat collection device comprises at least one of: a first heat collection module arranged between an engine in the range extender and the heat storage device and configured to collect exhaust heat of the engine; a second heat collection module arranged between the engine in the range extender and the heat storage device and configured to collect coolant heat of the engine; and a third heat collection module arranged between a generator in the range extender and the heat storage device and configured to collect coolant heat of the generator.
[0006] In some embodiments, the first heat collection module comprises an exhaust pipe of the engine, a first heat exchanger, a first heat transfer pipe, and a valve arranged on the exhaust pipe and / or the first heat transfer pipe; the second heat collection module comprises a cooling liquid pipe of the engine, a second heat exchanger, a second heat transfer pipe, and a valve arranged on the cooling liquid pipe of the engine and / or the second heat transfer pipe; and the third heat collection module comprises a cooling liquid pipe of the generator, a third heat exchanger, a third heat transfer pipe, and a valve arranged on the cooling liquid pipe of the generator and / or the third heat transfer pipe.
[0007] In some embodiments, the characteristic temperature of the range extender comprises an exhaust temperature of the engine, a cooling liquid temperature of the engine, and a cooling liquid temperature of the generator, and the controller controls the heat collection device to operate under the condition that the characteristic temperature of the range extender and the temperature of the heat storage device satisfy the heat collection condition, including: controlling the first heat collection module to operate under the condition that the exhaust temperature of the engine is higher than the temperature of the heat storage device, so as to collect the exhaust heat of the engine through the first heat collection module and store the exhaust heat into the heat storage device; controlling the second heat collection module to operate under the condition that the cooling liquid temperature of the engine is higher than the temperature of the heat storage device, so as to collect the cooling liquid heat of the engine through the second heat collection module and store the cooling liquid heat of the engine into the heat storage device; and controlling the third heat collection module to operate under the condition that the cooling liquid temperature of the generator is higher than the temperature of the heat storage device, so as to collect the cooling liquid heat of the generator through the third heat collection module and store the cooling liquid heat of the generator into the heat storage device.
[0008] In some embodiments, the preheating device comprises at least one of: a first preheating module arranged between the heat storage device and the engine, for preheating oil of the engine; a second preheating module arranged between the heat storage device and the engine, for preheating cooling liquid of the engine; a third preheating module arranged between the heat storage device and the generator, for preheating cooling liquid of the generator; a fourth preheating module arranged between the heat storage device and a hydraulic oil tank, for preheating hydraulic oil of the hydraulic oil tank; and a fifth preheating module arranged between the heat storage device and the power battery, for preheating cooling liquid of the power battery.
[0009] In some embodiments, the first preheating module comprises a first preheating pipeline, a first preheater, an engine oil pipeline of the engine, and a valve arranged on the first preheating pipeline and / or the engine oil pipeline; the second preheating module comprises a second preheating pipeline, a second preheater, a coolant pipeline of the engine, and a valve arranged on the second preheating pipeline and / or the coolant pipeline of the engine; the third preheating module comprises a third preheating pipeline, a third preheater, a coolant pipeline of the generator, and a valve arranged on the third preheating pipeline and / or the coolant pipeline of the generator; the fourth preheating module comprises a fourth preheating pipeline, a fourth preheater, a hydraulic oil pipeline, and a valve arranged on the fourth preheating pipeline and / or the hydraulic oil pipeline; the fifth preheating module comprises a fifth preheating pipeline, a fifth preheater, a coolant pipeline of the power battery, and a valve arranged on the fifth preheating pipeline and / or the coolant pipeline of the power battery.
[0010] In some embodiments, the controller controls the preheating device to operate comprises: in a case where one of the first to fifth preheating modules meets an operating condition, controlling the one preheating module to operate; in a case where multiple preheating modules of the first to fifth preheating modules meet the operating condition, determining a preheating module to be operated from the multiple preheating modules according to a working state of the range extender, and controlling the preheating module to be operated to operate.
[0011] In some embodiments, the controller determines the preheating module to be operated from the multiple preheating modules according to the working state of the range extender comprises: in a case where the range extender is in a shutdown state, taking the multiple preheating modules as the preheating module to be operated; in a case where the range extender is in a running state, determining the preheating module to be operated according to priorities of the multiple preheating modules.
[0012] In some embodiments, the operating condition of one of the first to fifth preheating modules configured by the controller comprises one of the following: the engine oil temperature of the engine is lower than an engine oil temperature threshold; the coolant temperature of the engine is lower than a first coolant temperature threshold; the coolant temperature of the generator is lower than a second coolant temperature threshold; the coolant temperature of the power battery is lower than a third coolant temperature threshold; and the hydraulic oil temperature is lower than a hydraulic oil temperature threshold.
[0013] According to a second aspect of the present disclosure, a thermal management method is provided, comprising: obtaining a temperature of an engine of an engineering mechanical device, a temperature of a heat storage device, and an ambient temperature of the engineering mechanical device; in a case where the temperature of the engine and the temperature of the heat storage device satisfy a heat collection condition, controlling a heat collection device to operate to collect heat generated by the engine through the heat collection device and store the heat generated by the engine to the heat storage device; in a case where the ambient temperature of the engineering mechanical device is lower than an ambient temperature threshold, controlling a preheating device to operate to obtain heat in the heat storage device through the preheating device and preheat at least one of the engine, a power battery, and hydraulic oil on the engineering mechanical device based on the obtained heat.
[0014] According to a third aspect of the present disclosure, a controller is provided, comprising: a module for executing the thermal management method as described above.
[0015] According to a fourth aspect of the present disclosure, a controller is provided, comprising: a memory; and a processor coupled to the memory, the processor being configured to execute the thermal management method as described above based on instructions stored in the memory.
[0016] According to a fifth aspect of the present disclosure, a computer readable storage medium is provided, having stored thereon computer instructions which, when executed by a processor, implement the thermal management method as described above.
[0017] According to a sixth aspect of the present disclosure, a computer program product is provided, having stored thereon computer instructions which, when executed by a processor, implement the thermal management method as described above.
[0018] According to a seventh aspect of the present disclosure, an engineering mechanical device is provided, comprising the thermal management system as described above. BRIEF DESCRIPTION OF DRAWINGS
[0019] The accompanying drawings, which constitute a part of this specification, illustrate embodiments of the present disclosure and serve to explain the principles of the present disclosure.
[0020] The present disclosure can be understood more readily by reference to the following detailed description, when taken in connection with the accompanying drawings, and wherein:
[0021] Figure 1 A structural schematic diagram of a thermal management system according to some embodiments of the present disclosure.
[0022] Figure 2 A structural schematic diagram of a thermal management system according to some other embodiments of the present disclosure.
[0023] Figure 3 A flow schematic diagram of a thermal management method according to some embodiments of the present disclosure.
[0024] Figure 4 Flowchart of another part of a method for thermal management according to some embodiments of the present disclosure.
[0025] Figure 5 Flowchart of another part of a method for thermal management according to some embodiments of the present disclosure.
[0026] Figure 6 Structure diagram of a controller according to some embodiments of the present disclosure.
[0027] Figure 7 Structure diagram of a controller according to some embodiments of the present disclosure.
[0028] Figure 8 Structure diagram of a construction machine according to some embodiments of the present disclosure. DETAILED DESCRIPTION
[0029] Various exemplary embodiments of the present disclosure will now be described in detail herein below with reference to the accompanying drawings. Note that the relative arrangement, numerical expressions, and numerical values of components and steps set forth in these embodiments are not limiting to the scope of the present disclosure unless otherwise specifically stated.
[0030] It should be understood, of course, that the dimensions of the various portions shown in the attached drawings are by no means limiting, and are shown solely for purposes of illustration.
[0031] The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the scope of the present disclosure, its application, or uses.
[0032] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail herein. However, where appropriate, such techniques, methods, and apparatus can be considered part of the present disclosure.
[0033] In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary, and not as a limitation. Thus, other examples of the exemplary embodiments can have different values.
[0034] It should be noted that like reference numerals and letters in the various figures indicate similar items, and thus, once an item is defined in one figure, it is not necessary to discuss it further in subsequent figures.
[0035] In order to make the purposes, technical solutions, and advantages of the present disclosure clearer, the present disclosure is further described in detail below with reference to specific embodiments and in conjunction with the accompanying drawings.
[0036] The range-extending engineering machinery device in the related art has problems such as difficulty in starting the range extender, difficulty in charging and discharging the power battery, and poor running performance of the whole machine in a low-temperature environment.
[0037] To solve the problems in the related art, the present disclosure provides a heat management method, system and engineering machinery device, which can recycle and store the waste heat generated by the range extender of the hybrid range-extending engineering machinery device when the range extender is working normally, and preheat at least one of the range extender, the power battery and the hydraulic oil of the engineering machinery device using the recycled heat in a low-temperature environment, so as to solve the problems of the hybrid range-extending engineering machinery device in the related art, improve the performance of the hybrid range-extending engineering machinery device in a low-temperature environment, and improve the environmental adaptability of the hybrid range-extending engineering machinery device.
[0038] Figure 1 A structural schematic diagram of a heat management system according to some embodiments of the present disclosure. As shown in Figure 1 , the heat management system includes a heat collection device 1, a heat storage device 2, a preheating device 3 and a controller 4.
[0039] The heat collection device 1 is used to collect the heat generated by the range extender on the engineering machinery device.
[0040] In some embodiments, the heat collection device 1 includes at least one of a first heat collection module, a second heat collection module and a third heat collection module. The first heat collection module is arranged between the engine in the range extender and the heat storage device, and is used to collect the heat carried by the exhaust gas of the engine. The second heat collection module is arranged between the engine in the range extender and the heat storage device, and is used to collect the heat carried by the cooling liquid of the engine. The third heat collection module is arranged between the generator in the range extender and the heat storage device, and is used to collect the heat carried by the cooling liquid of the generator.
[0041] The heat storage device 2 is connected with the heat collection device 1, and is used to store heat. In some examples, the heat storage device 2 includes a heat storage unit and an insulation container, and is used to store the heat collected by the heat collection device.
[0042] The preheating device 3 is connected with the heat storage device 2, and is used to preheat at least one of the range extender, the power battery and the hydraulic oil on the engineering machinery device.
[0043] In some embodiments, the preheating device 3 comprises at least one of a first preheating module, a second preheating module, a third preheating module, a fourth preheating module, and a fifth preheating module. The first preheating module is arranged between the heat storage device and the engine and is configured to preheat the engine oil. The second preheating module is arranged between the heat storage device and the engine and is configured to preheat the coolant of the engine. The third preheating module is arranged between the heat storage device and the generator and is configured to preheat the coolant of the generator. The fourth preheating module is arranged between the heat storage device and the hydraulic oil tank and is configured to preheat the hydraulic oil of the hydraulic oil tank. The fifth preheating module is arranged between the heat storage device and the power battery and is configured to preheat the coolant of the power battery.
[0044] The controller 4 is configured to control the heat collection device to operate to collect the heat generated by the range extender and store the heat generated by the range extender to the heat storage device when the temperature of the range extender and the temperature of the heat storage device satisfy the heat collection condition.
[0045] The controller controls the heat collection device to operate in various ways, which will be described below in two embodiments.
[0046] In the first embodiment, the heat collection device 1 comprises a first heat collection module and a second heat collection module. In this embodiment, the controller 4 controls the first heat collection module and the second heat collection module to operate when both the first heat collection module and the second heat collection module satisfy the heat collection condition, and controls the heat collection module that satisfies the heat collection condition to operate when only one of the first heat collection module and the second heat collection module satisfies the heat collection condition.
[0047] Further, in the first embodiment, the temperature of the range extender includes the exhaust temperature of the engine and the coolant temperature of the engine, and the heat collection condition corresponding to the first heat collection module includes that the exhaust temperature of the engine is higher than the temperature of the heat storage device, and the heat collection condition corresponding to the second heat collection module includes that the coolant temperature of the engine is higher than the temperature of the heat storage device. Accordingly, the controller 4 controls the heat collection device to operate specifically includes: controlling the first heat collection module to operate to collect the exhaust heat of the engine and store the exhaust heat to the heat storage device 2 when the exhaust temperature of the engine is higher than the temperature of the heat storage device; and controlling the second heat collection module to operate to collect the coolant heat of the engine and store the coolant heat of the engine to the heat storage device 2 when the coolant temperature of the engine is higher than the temperature of the heat storage device.
[0048] In the second embodiment, the heat collection device 1 comprises a first heat collection module, a second heat collection module and a third heat collection module. In this embodiment, when the first to third heat collection modules all satisfy the heat collection condition, the controller 4 controls the first to third heat collection modules to operate; when only one or two of the first to third heat collection modules satisfy the heat collection condition, the controller 4 controls the heat collection module(s) satisfying the heat collection condition to operate.
[0049] Further, in the second embodiment, the characteristic temperature of the range extender comprises the exhaust temperature of the engine, the coolant temperature of the engine and the coolant temperature of the generator; the heat collection condition corresponding to the first heat collection module comprises that the exhaust temperature of the engine is higher than the temperature of the heat storage device, the heat collection condition corresponding to the second heat collection module comprises that the coolant temperature of the engine is higher than the temperature of the heat storage device, and the heat collection condition corresponding to the third heat collection module comprises that the coolant temperature of the generator is higher than the temperature of the heat storage device. Correspondingly, the controller 4 controlling the heat collection device to operate can specifically comprise: in the case that the exhaust temperature of the engine is higher than the temperature of the heat storage device, controlling the first heat collection module to operate to collect the exhaust heat of the engine through the first heat collection module and store the exhaust heat to the heat storage device 2; in the case that the coolant temperature of the engine is higher than the temperature of the heat storage device, controlling the second heat collection module to operate to collect the coolant heat of the engine through the second heat collection module and store the coolant heat of the engine to the heat storage device 2; in the case that the coolant temperature of the generator is higher than the temperature of the heat storage device, controlling the third heat collection module to operate to collect the coolant heat of the generator through the third heat collection module and store the coolant heat of the generator to the heat storage device 2.
[0050] In addition, in specific implementation, the constituent modules of the heat collection device and the heat collection conditions corresponding to each module can be flexibly adjusted. For example, the heat collection device can also only comprise the first heat collection module and the third heat collection module, or the heat collection device only comprises the second heat collection module and the third heat collection module. For example, the heat collection condition corresponding to the first heat collection module can also be set as: the exhaust temperature of the engine is higher than the temperature of the heat storage device, and the temperature of the heat storage device is lower than the temperature threshold of the heat storage device. The heat collection condition corresponding to the second heat collection module can also be set as: the coolant temperature of the engine is higher than the temperature of the heat storage device, and the temperature of the heat storage device is lower than the temperature threshold of the heat storage device. The heat collection condition corresponding to the third heat collection module can also be set as: the coolant temperature of the generator is higher than the temperature of the heat storage device, and the temperature of the heat storage device is lower than the temperature threshold of the heat storage device. The temperature threshold of the heat storage device can be flexibly set according to requirements. For example, the temperature threshold of the heat storage device is set to be in the range of 50℃-90℃.
[0051] The controller 4 is further configured to control the preheating device 3 to operate to obtain heat in the heat storage device 2 by the preheating device and preheat at least one of the range extender, the power battery and the hydraulic oil on the construction machinery device based on the obtained heat in the case that the ambient temperature of the construction machinery device is lower than the ambient temperature threshold. The controller controlling the preheating device to operate can have various embodiments, which are exemplarily illustrated in combination with two embodiments.
[0052] In the first embodiment, the preheating device 2 includes a first preheating module, a second preheating module and a third preheating module. The controller controls one of the first to third preheating modules to operate in the case that the one preheating module meets the operating condition, and controls a plurality of preheating modules to operate in the case that the plurality of preheating modules meet the operating condition. Further, in the above embodiment, the operating condition of the first preheating module can include that the engine oil temperature of the engine is lower than the engine oil temperature threshold; the operating condition of the second preheating module can include that the coolant temperature of the engine is lower than the first coolant temperature threshold; and the operating condition of the third preheating module can include that the coolant temperature of the generator is lower than the second coolant temperature threshold. Accordingly, the controller 4 controlling the preheating device to operate can specifically include: controlling the first preheating module to operate to preheat the engine oil of the engine by the first preheating module in the case that the engine oil temperature of the engine is lower than the engine oil temperature threshold; controlling the second preheating module to operate to preheat the coolant of the engine by the second preheating module in the case that the coolant temperature of the engine is lower than the first coolant temperature threshold; and controlling the third preheating module to operate to preheat the coolant of the generator by the third preheating module in the case that the coolant temperature of the generator is lower than the second coolant temperature threshold. The engine oil temperature threshold, the first coolant temperature threshold and the second coolant temperature threshold can be flexibly set according to requirements. For example, the engine oil temperature threshold, the first coolant temperature threshold and the second coolant temperature threshold all have a value range of 10°C-20°C.
[0053] In the second embodiment, the preheating device includes first to fifth preheating modules. In a case where one of the first to fifth preheating modules meets an operating condition, the controller 4 controls the one preheating module to operate; in a case where a plurality of the first to fifth preheating modules meet operating conditions, the controller 4 controls the plurality of preheating modules to operate. Further, in the above embodiment, the operating condition of the first preheating module can include that the oil temperature of the engine is lower than an oil temperature threshold value; the operating condition of the second preheating module can include that the coolant temperature of the engine is lower than a first coolant temperature threshold value; the operating condition of the third preheating module can include that the coolant temperature of the generator is lower than a second coolant temperature threshold value; the operating condition of the fourth preheating module can include that the temperature of the hydraulic oil is lower than a hydraulic oil temperature threshold value; and the operating condition of the fifth preheating module can include that the coolant temperature of the power battery is lower than a third coolant temperature threshold value. Accordingly, the controller 4 controlling the preheating device to operate can specifically include: in a case where the oil temperature of the engine is lower than the oil temperature threshold value, controlling the first preheating module to operate to preheat the oil of the engine by the first preheating module; in a case where the coolant temperature of the engine is lower than the first coolant temperature threshold value, controlling the second preheating module to operate to preheat the coolant of the engine by the second preheating module; in a case where the coolant temperature of the generator is lower than the second coolant temperature threshold value, controlling the third preheating module to operate to preheat the coolant of the generator by the third preheating module; in a case where the temperature of the hydraulic oil is lower than the hydraulic oil temperature threshold value, controlling the fourth preheating module to operate to preheat the hydraulic oil by the fourth preheating module; and in a case where the coolant temperature of the power battery is lower than the third coolant temperature threshold value, controlling the fifth preheating module to operate to preheat the coolant of the power battery by the fifth preheating module. The first coolant temperature threshold value, the second coolant temperature threshold value, and the third coolant temperature threshold value can have the same value or different values.
[0054] In addition, in specific implementation, the constituent modules of the preheating device, the operating conditions corresponding to each preheating module, and the operation logic of the preheating device controlled by the controller can also be flexibly adjusted. For example, the preheating device can also only include the first to fourth preheating modules, or the preheating device only includes the second to fifth preheating modules, and the like. For example, the operating condition corresponding to the first preheating module can also be set as that the oil temperature of the engine is lower than the oil temperature threshold, and the temperature of the heat storage device is higher than the oil temperature threshold. The operating condition corresponding to the second preheating module can also be set as that the coolant temperature of the engine is lower than the first coolant temperature threshold, and the temperature of the heat storage device is higher than the first coolant temperature threshold. The operating condition corresponding to the third preheating module can also be set as that the coolant temperature of the generator is lower than the second coolant temperature threshold, and the temperature of the heat storage device is higher than the second coolant temperature threshold. The operating condition corresponding to the fourth preheating module can also be set as that the temperature of the hydraulic oil is lower than the hydraulic oil temperature threshold, and the temperature of the heat storage device is higher than the hydraulic oil temperature threshold. The operating condition corresponding to the fifth preheating module can also be set as that the coolant temperature of the power battery is lower than the third coolant temperature threshold, and the temperature of the heat storage device is higher than the third coolant temperature threshold. For another example, the operation logic of the preheating device controlled by the controller can also be set as that, in the case that multiple preheating modules in the first to fifth preheating modules meet the operating conditions, the preheating module to be operated is determined from the multiple preheating modules according to the working state of the range extender, and the preheating module to be operated is controlled to operate.
[0055] In the embodiments of the present disclosure, the above system can recycle and store the waste heat generated by the range extender of the hybrid range-extended engineering machinery device when the range extender is working normally, and preheat at least one of the range extender, the power battery and the hydraulic oil of the engineering machinery device using the recycled heat in a low-temperature environment, so as to solve the problems existing in the hybrid range-extended engineering machinery device in the related art, thereby improving the performance of the hybrid range-extended engineering machinery device in a low-temperature environment and improving the environmental adaptability of the hybrid range-extended engineering machinery device. At the same time, through the above system, the energy consumption caused by using the positive temperature coefficient (PTC) heating device to preheat the engineering machinery device in a low-temperature working condition can be reduced, thereby the energy consumption of the range extender and the whole machine can be obviously reduced.
[0056] Figure 2 A structural schematic diagram of a heat management system according to some other embodiments of the present disclosure is shown. As shown in Figure 2 The heat management system includes a heat collection device, a heat storage device 2, a preheating device, and a controller 4.
[0057] The heat collection device includes a first heat collection module, a second heat collection module, and a third heat collection module. In some embodiments, as Figure 2As shown, the first heat collection module includes an engine exhaust pipe 111, a first heat exchanger 112, a first heat transfer pipe 113, a valve 114 arranged on the exhaust pipe, and a valve 115 arranged on the first heat transfer pipe. The second heat collection module includes an engine coolant pipe 121, a second heat exchanger 122, a second heat transfer pipe 123, a valve 124 arranged on the engine coolant pipe, and a valve 125 arranged on the second heat transfer pipe. The third heat collection module includes a generator coolant pipe 131, a third heat exchanger 132, a third heat transfer pipe 133, and a valve 134 arranged on the generator coolant pipe, and a valve 135 arranged on the third heat transfer pipe. In addition, in specific implementation, the number of valves and the installation position of the valves in the first heat collection module to the third heat collection module can be flexibly adjusted. For example, for the first heat collection module, only a valve can be arranged on the engine exhaust pipe 111, and no valve is arranged on the first heat transfer pipe 113. Alternatively, for the first heat collection module, only a valve can be arranged on the first heat transfer pipe 113, and no valve is arranged on the engine exhaust pipe 111.
[0058] The controller 4 is configured to: acquire the exhaust temperature of the engine in the range extender, the coolant temperature of the engine, the coolant temperature of the generator in the range extender, and the temperature of the heat storage device; and determine whether each heat collection module meets the heat collection condition based on the exhaust temperature of the engine, the coolant temperature of the engine, the coolant temperature of the generator, and the temperature of the heat storage device.
[0059] In some embodiments, the heat collection device adopts Figure 2In the shown structure, the controller 4 controls the heat collection device to operate including: the controller determines whether the exhaust temperature of the engine 14 is higher than the temperature of the heat storage device 2 and whether the temperature of the heat storage device 2 is lower than the temperature threshold of the heat storage device; if yes, the controller 4 controls the valve 114 and the valve 115 to open, so that the exhaust pipe 111 is communicated with the first heat exchanger 112 and the first heat transfer pipe 113 is communicated with the first heat exchanger 112, and the first heat exchanger and the heat storage device start to work to collect and store the exhaust waste heat of the engine 14; otherwise, the valve 114 and the valve 115 are closed and the first heat exchanger and the heat storage device do not work, i.e. no exhaust heat collection or stop collecting exhaust heat. Further, the controller 4 controls the heat collection device to operate including: the controller 4 determines whether the coolant temperature of the engine 14 is higher than the temperature of the heat storage device 2 and whether the temperature of the heat storage device 2 is lower than the temperature threshold of the heat storage device; if yes, the controller 4 controls the valve 124 and the valve 125 to open, so that the coolant pipe 121 of the engine 14 is communicated with the second heat exchanger 122 and the second heat transfer pipe 123 is communicated with the second heat exchanger 122, and the second heat exchanger and the heat storage device start to work to collect and store the waste heat of the coolant of the engine 14; otherwise, the valve 124 and the valve 125 are closed and the second heat exchanger and the heat storage device do not work, i.e. no engine coolant heat collection or stop collecting engine coolant heat. Further, the controller 4 controls the heat collection device to operate including: the controller 4 determines whether the coolant temperature of the generator 15 is higher than the temperature of the heat storage device 2 and whether the temperature of the heat storage device 2 is lower than the temperature threshold of the heat storage device; if yes, the controller 4 controls the valve 134 and the valve 135 to open, so that the coolant pipe 131 of the generator 15 is communicated with the third heat exchanger 132 and the third heat transfer pipe 133 is communicated with the third heat exchanger 132, and the third heat exchanger and the heat storage device start to work to collect and store the waste heat of the coolant of the generator 15; otherwise, the valve 134 and the valve 135 are closed and the third heat exchanger and the heat storage device do not work, i.e. no heat collection of the coolant of the generator 15 or stop collecting the heat of the engine coolant.
[0060] The preheating device includes a first preheating module, a second preheating module, a third preheating module, a fourth preheating module and a fifth preheating module. In some embodiments, as shown in FIG. 1, the first preheating module includes a first preheating pipe 21, a first preheating valve 22 and a first preheating heater 23. The second preheating module includes a second preheating pipe 31, a second preheating valve 32 and a second preheating heater 33. The third preheating module includes a third preheating pipe 41, a third preheating valve 42 and a third preheating heater 43. The fourth preheating module includes a fourth preheating pipe 51, a fourth preheating valve 52 and a fourth preheating heater 53. The fifth preheating module includes a fifth preheating pipe 61, a fifth preheating valve 62 and a fifth preheating heater 63. Figure 2As shown, the first preheating module includes a first preheating pipeline 311, a first preheater 312, an engine oil pipeline 313 of the engine, a valve 315 arranged on the first preheating pipeline, and a valve 314 arranged on the engine oil pipeline. The second preheating module includes a second preheating pipeline 321, a second preheater 322, a coolant pipeline 323 of the engine, a valve 325 arranged on the second preheating pipeline, and a valve 324 arranged on the coolant pipeline of the engine. The third preheating module includes a third preheating pipeline 331, a third preheater 332, a coolant pipeline 333 of the generator, a valve 335 arranged on the third preheating pipeline, and a valve 334 arranged on the coolant pipeline of the generator. The fourth preheating module includes a fourth preheating pipeline 341, a fourth preheater 342, a hydraulic oil pipeline 343, a valve 345 arranged on the fourth preheating pipeline, and a valve 344 arranged on the hydraulic oil pipeline. The fifth preheating module includes a fifth preheating pipeline 351, a fifth preheater 352, a coolant pipeline 353 of the power battery, a valve 355 arranged on the fifth preheating pipeline, and a valve 354 arranged on the coolant pipeline of the power battery.
[0061] The controller 4 is configured to acquire the engine oil temperature, the engine coolant temperature, the generator coolant temperature, the hydraulic oil temperature, and the power battery temperature; determine whether the operating conditions of the first to fifth preheating modules are met according to the acquired temperatures; control one of the first to fifth preheating modules to operate when the operating condition of the one preheating module is met; and determine the preheating module to be operated from the multiple preheating modules according to the working state of the range extender when the operating conditions of multiple preheating modules are met, and control the preheating module to be operated to operate.
[0062] In some embodiments, the preheating device adopts Figure 2In these embodiments, when one of the first to fifth preheating modules satisfies the operating condition, the controller controls the one preheating module to operate including: judging whether the engine oil temperature of the engine 14 is lower than the engine oil temperature threshold value and whether the temperature of the heat storage device 2 is higher than the engine oil temperature threshold value; if yes, the controller controls the valve 314 and the valve 315 to open, so that the first preheating pipeline 311 communicates with the first preheater 312 and the engine oil pipeline 313 of the engine communicates with the first preheater 312, and the first preheater 312 works to preheat the engine oil; otherwise, the valves 314 and 315 are closed, i.e. the engine oil is not preheated or the preheating of the engine oil is stopped. Further, the controller controlling the one preheating module to operate can further include: judging whether the coolant temperature of the engine 14 is lower than the first coolant temperature threshold value and whether the temperature of the heat storage device is higher than the first coolant temperature threshold value; if yes, the controller controls the valve 324 and the valve 325 to open, so that the second preheating pipeline 321 communicates with the second preheater 322 and the coolant pipeline 323 of the engine communicates with the second preheater 322, and the second preheater 322 works to preheat the coolant of the engine; otherwise, the valves 324 and 325 are closed, i.e. the coolant of the engine is not preheated or the preheating of the coolant of the engine is stopped. Further, the controller controlling the one preheating module to operate can further include: judging whether the coolant temperature of the generator is lower than the second coolant temperature threshold value and whether the temperature of the heat storage device is higher than the second coolant temperature threshold value; if yes, the controller controls the valve 334 and the valve 335 to open, so that the third preheating pipeline 331 communicates with the third preheater 332 and the coolant pipeline 333 of the generator communicates with the third preheater 332, and the third preheater 332 works to preheat the coolant of the generator 15; otherwise, the valves 334 and 335 are closed, i.e. the coolant of the generator is not preheated or the preheating of the coolant of the generator is stopped. Further, the controller controlling the one preheating module to operate can further include: judging whether the temperature of the hydraulic oil is lower than the hydraulic oil temperature threshold value and whether the temperature of the heat storage device is higher than the hydraulic oil temperature threshold value; if yes, the controller controls the valve 344 and the valve 345 to open, so that the fourth preheating pipeline 341 communicates with the fourth preheater 342 and the hydraulic oil pipeline 343 of the hydraulic oil tank 16 communicates with the fourth preheater 342, and the fourth preheater 342 works to preheat the hydraulic oil in the hydraulic oil tank 16; otherwise, the valves 344 and 345 are closed, i.e. the hydraulic oil is not preheated or the preheating of the hydraulic oil is stopped.Further, the controller controlling the preheating module to operate further can comprise: judging whether the coolant temperature of the power battery is lower than a third coolant temperature threshold and whether the temperature of the heat storage device is higher than the third coolant temperature threshold; if yes, the controller controls the valve 354 and the valve 355 to open, so that the fifth preheating pipeline 351 is communicated with the fifth preheater 352 and the coolant pipeline 353 of the power battery 17 is communicated with the fifth preheater 352, and the fifth preheater 352 is operated to preheat the coolant of the power battery; otherwise, the valve 354 and the valve 355 are closed, and the coolant of the power battery is not preheated or the preheating of the coolant of the power battery is stopped.
[0063] Further, in the above embodiment, in the case that the plurality of preheating modules in the first to fifth preheating modules meet the operating condition, the controller controlling the plurality of preheating modules to operate comprises: in the case that the range extender is in the shutdown state, the plurality of preheating modules meeting the operating condition are taken as preheating modules to be operated, and the preheating modules to be operated are controlled to operate; in the case that the range extender is in the operating state, the preheating modules to be operated are determined according to the priorities of the plurality of preheating modules, and the preheating modules to be operated are controlled to operate. For example, in the case that the range extender is in the shutdown state, the preheating of the engine oil and the preheating of the coolant of the engine are preferentially guaranteed; in the case that the range extender is in the operating state, the flow of each preheating module is evenly distributed.
[0064] In the embodiments of the present disclosure, the above system can achieve the following beneficial effects: first, by preheating at least one of the engine, the generator, the hydraulic oil and the power battery using the waste heat and the exhaust heat generated during the operation of the range extender under low-temperature working conditions, the energy consumption of the vehicle during cold start under low-temperature working conditions can be reduced, and the energy consumption of the range extender and the whole machine can be significantly reduced; second, by preheating the engine in the range extender under low-temperature working conditions, the preheated engine can reach the normal working temperature, thereby helping to shorten the start-up time of the range extender and helping to make the engine oil combustion more complete and reduce the emission of harmful substances, thereby effectively solving the problems of difficult start-up of the range extender of the vehicle and large emission pollution under low-temperature environment; by preheating the hydraulic oil under low-temperature working conditions, the flowability of the preheated hydraulic oil can be enhanced, the hydraulic system of the whole machine can respond faster and move more smoothly, thereby improving the low-temperature running performance of the vehicle; by preheating the power battery under low-temperature working conditions, the charging and discharging performance of the power battery under low-temperature working conditions can be effectively improved, and the service life of the battery can be prolonged; by flexibly adjusting the heat collection control strategy and the preheating control strategy according to the actual working conditions, the waste heat and the exhaust heat generated by the range extender can be more efficiently utilized, and the environmental adaptability of the whole machine can be improved.
[0065] Figure 3A flowchart of a heat management method according to some embodiments of the present disclosure is shown. As shown in Figure 3 The heat management method is performed by a controller and includes steps S31-S33.
[0066] In step S31, the temperature of the range extender, the temperature of the heat storage device, and the ambient temperature of the construction equipment are obtained.
[0067] In some examples, the temperature of the range extender is obtained by a temperature sensor provided on the range extender and sent to the controller, the temperature of the heat storage device is obtained by a temperature sensor provided on the heat storage device and sent to the controller, and the ambient temperature of the construction equipment is obtained by a temperature sensor provided outside the construction equipment and sent to the controller.
[0068] In addition, the above temperatures can also be obtained in other ways.
[0069] In step S32, when the temperature of the range extender and the temperature of the heat storage device satisfy the heat collection condition, the heat collection device is controlled to operate to collect the heat generated by the range extender and store the heat generated by the range extender in the heat storage device.
[0070] For the structure of the heat collection device, the heat collection condition, and how the controller specifically controls the heat collection device to operate, please refer to the relevant description of the previously shown embodiments.
[0071] In step S33, when the ambient temperature of the construction equipment is lower than the ambient temperature threshold, the preheating device is controlled to operate to obtain the heat in the heat storage device and preheat at least one of the range extender, the power battery, and the hydraulic oil on the construction equipment based on the obtained heat.
[0072] For the structure of the preheating device, the operation condition of the preheating device, and how the controller specifically controls the preheating device to operate, please refer to the relevant description of the previously shown embodiments.
[0073] In the embodiments of the present disclosure, when the range extender is running, the exhaust heat of the engine, the cooling liquid waste heat, and the cooling liquid waste heat of the generator in the range extender are collected by the heat source collection device and stored in the heat storage device. When the ambient temperature is lower than the set ambient temperature threshold, the engine oil, the cooling liquid, etc. are preheated to reach the set target temperature value based on the stored heat by the preheating device, which achieves the effects of energy saving and consumption reduction, reduces vehicle cold start emission pollution, and improves vehicle low-temperature operation performance, and solves the problems of cold start difficulty of the hybrid range extender construction equipment under low-temperature working conditions.
[0074] The following describes Figure 4 and Figure 5 The heat management method of some other embodiments of the present disclosure is described. As shown in the figure, in some other embodiments of the present disclosure, the heat collection control flow in the heat management method includes steps S401 to S411. Figure 4
[0075] In step S401, the initialization configuration is performed.
[0076] In some examples, the initialization configuration includes setting temperature thresholds required by the heat management control logic. For example, an ambient temperature threshold Ta is set, the reference value range of Ta is 10-20℃; a temperature threshold Tb of the heat storage medium in the heat storage device is set, the reference value range of Tb is 50-90℃; a d-coolant temperature threshold Tc of the generator is set, the reference value range of Tc is 10-20℃; an engine oil temperature threshold Td is set, the reference value range of Td is 10-20℃; a coolant temperature threshold Te of the engine is set, the reference value range of Te is 10-20℃; a temperature threshold Tf of the hydraulic oil is set, the reference value range of Tf is 10-20℃; a temperature threshold Tg of the power battery is set, the reference value range of Tg is 10-20℃.
[0077] In step S402, it is determined whether the ambient temperature is lower than the ambient temperature threshold. If the determination result of step S402 is yes, step S404 is performed; otherwise, step S403 is performed.
[0078] In step S403, the heat management logic is not started.
[0079] In step S404, the heat management logic is started.
[0080] In step S405, the engine exhaust temperature, the engine coolant temperature, and the generator coolant temperature are acquired.
[0081] For example, the exhaust temperature of the engine is collected by a temperature sensor arranged on the engine exhaust pipe, the temperature of the engine coolant is collected by a temperature sensor arranged on the engine coolant pipe, the temperature of the generator coolant is collected by a temperature sensor arranged on the generator coolant pipe, and the collected temperatures are sent to the controller.
[0082] In step S406, it is determined whether the engine exhaust temperature is higher than the temperature of the heat storage device. If the determination result of step S406 is yes, step S407 is performed; otherwise, step S407 is not performed.
[0083] In step S407, the first heat collection module is controlled to run.
[0084] As to how to control the operation of the first heat collection module, reference can be made to the relevant description of the foregoing embodiments.
[0085] In step S408, it is determined whether the engine coolant temperature is higher than the heat storage device temperature. If the determination result of step S408 is yes, step S409 is performed; otherwise, step S409 is not performed.
[0086] In step S409, the second heat collection module is controlled to operate.
[0087] As to how to control the operation of the second heat collection module, reference can be made to the relevant description of the foregoing embodiments.
[0088] In step S410, it is determined whether the generator coolant temperature is higher than the heat storage device temperature. If the determination result of step S410 is yes, step S411 is performed; otherwise, step S411 is not performed.
[0089] In implementation, step S406, step S408 and step S410 can be executed in parallel or in a preset order.
[0090] In step S411, the third heat collection module is controlled to operate.
[0091] As to how to control the operation of the third heat collection module, reference can be made to the relevant description of the foregoing embodiments.
[0092] In the embodiments of the present disclosure, the above method can effectively collect and store the waste heat generated during the operation of the range extender, which helps to preheat the range extender, power battery and hydraulic oil on the construction machinery based on the stored heat, thereby helping to improve the performance of the whole machine under low temperature working conditions.
[0093] As Figure 5 shown, in some other embodiments of the present disclosure, the preheating control process in the heat management method includes steps S51 to S54.
[0094] In step S51, the temperatures of the engine oil, engine coolant, generator coolant, hydraulic oil and power battery coolant are obtained.
[0095] In some examples, the engine oil temperature is acquired by a temperature sensor arranged on an engine oil pipeline. The engine coolant temperature is acquired by a temperature sensor arranged on an engine coolant pipeline. The generator coolant temperature is acquired by a temperature sensor arranged on a generator coolant pipeline. The hydraulic oil temperature is acquired by a temperature sensor arranged on a hydraulic oil pipeline. The power battery coolant temperature is acquired by a temperature sensor arranged on a power battery coolant pipeline. And the temperatures acquired by the respective temperature sensors are sent to the controller.
[0096] In step S52, it is determined whether the preheating module operation condition is met according to the acquired temperature.
[0097] In the embodiments of the present disclosure, the preheating device includes first to fifth preheating modules. In step S52, it is determined whether each of the first to fifth preheating modules meets the corresponding operation condition. For specific ways of determining whether each of the preheating modules meets the preheating module operation condition, reference can be made to the related descriptions of the previously described embodiments.
[0098] In step S53, in the case where one of the first to fifth preheating modules meets the operation condition, the one preheating module is controlled to operate.
[0099] For specific ways of controlling the one preheating module to operate, reference can be made to the related descriptions of the previously described embodiments.
[0100] In step S54, in the case where multiple preheating modules of the first to fifth preheating modules meet the operation condition, the preheating module to be operated is determined from the multiple preheating modules according to the working state of the range extender, and the preheating module to be operated is controlled to operate.
[0101] For specific ways of controlling the multiple preheating modules to operate, reference can be made to the related descriptions of the previously described embodiments.
[0102] In the embodiments of the present disclosure, the above method can solve the problems existing in the related art hybrid range-extended engineering machinery device, thereby improving the performance of the hybrid range-extended engineering machinery device at low temperature and improving the environmental adaptability of the hybrid range-extended engineering machinery device.
[0103] Figure 6 A structural schematic diagram of the controller according to some embodiments of the present disclosure is shown in FIG. 6. As shown in FIG. 6, the controller 60 is configured to perform the thermal management method as described above, and the controller includes an acquisition module 61, a first control module 62 and a second control module 63. Figure 6
[0104] The acquisition module 61 is configured to acquire the temperature of the range extender of the engineering machinery device, the temperature of the heat storage device and the ambient temperature of the engineering machinery device.
[0105] The first control module 62 is used to control the operation of the heat collection device when the characteristic temperature of the range extender and the temperature of the heat storage device meet the heat collection conditions, so as to collect the heat generated by the range extender through the heat collection device and store the heat generated by the range extender in the heat storage device.
[0106] The second control module 63 is used to control the operation of the preheating device when the ambient temperature of the construction machinery equipment is lower than the ambient temperature threshold, so as to obtain heat from the heat storage device through the preheating device, and preheat at least one of the range extender, power battery and hydraulic oil on the construction machinery equipment based on the obtained heat.
[0107] In this embodiment of the disclosure, the above controller can solve the problems existing in hybrid range-extended construction machinery equipment in the related technology, thereby improving the performance of hybrid range-extended construction machinery equipment at low temperatures and improving the environmental adaptability of hybrid range-extended construction machinery equipment.
[0108] Figure 7 This is a schematic diagram of the structure of a controller according to other embodiments of this disclosure. For example... Figure 7 As shown, the controller 70 includes a memory 71 and a processor 72 coupled to the memory 71. The memory 71 is used to store instructions for executing embodiments of the thermal management methods described above. The processor 72 is configured to execute the thermal management methods in any of the embodiments of this disclosure based on the instructions stored in the memory 71.
[0109] Figure 8 This is a schematic diagram of the structure of engineering machinery equipment according to some embodiments of this disclosure. For example... Figure 8 As shown, the engineering machinery equipment 80 includes a thermal management system 81. The thermal management system 81 can employ... Figure 1 or Figure 2 The structure shown.
[0110] In some embodiments, the engineering machinery equipment 80 further includes various temperature sensors as described above for measuring the various temperatures required to perform the thermal management method.
[0111] Various aspects of this disclosure are described herein with reference to flowchart illustrations and / or block diagrams of methods, apparatus, and computer program products according to embodiments of this disclosure. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations thereof, can be implemented by computer-readable program instructions.
[0112] These computer-readable program instructions are provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable device to produce a machine, such that execution of the instructions by the processor produces means for implementing the functions specified in one or more boxes of the flowchart and / or block diagram.
[0113] These computer readable program instructions can also be stored in a computer readable storage medium that can direct a computer, a processor, or other programmable data processing apparatus to function in a particular manner, such that the computer readable program instructions which implement the function specified in the flow diagrams and / or block diagrams are executed by the computer.
[0114] The disclosure can take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment containing both software and hardware aspects.
[0115] So far, the heat management method, system and engineering mechanical equipment according to the disclosure have been described in detail. In order to avoid obscuring the concept of the disclosure, some details known in the art are not described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein according to the above description.
Claims
1. A thermal management system, comprising: A heat collection device is used to collect the heat generated by the range extender on engineering machinery equipment; A heat storage device, connected to the heat collection device, is used to store heat; A preheating device is connected to the heat storage device; The controller is configured to: when the characteristic temperature of the range extender and the temperature of the heat storage device meet the heat collection conditions, control the operation of the heat collection device to collect the heat generated by the range extender and store the heat generated by the range extender in the heat storage device. When the ambient temperature of the engineering machinery is below the ambient temperature threshold, the preheating device is controlled to operate, so as to obtain heat from the heat storage device through the preheating device, and preheat at least one of the range extender, power battery and hydraulic oil on the engineering machinery based on the obtained heat.
2. The thermal management system according to claim 1, wherein, The heat collection device includes at least one of the following: The first heat collection module is located between the engine and the heat storage device in the range extender, and is used to collect the exhaust heat of the engine. The second heat collection module is located between the engine and the heat storage device in the range extender, and is used to collect the heat of the engine's coolant. The third heat acquisition module is located between the generator and the heat storage device in the range extender, and is used to collect the heat from the generator's coolant.
3. The thermal management system according to claim 2, wherein: The first heat acquisition module includes an exhaust pipe of an engine connected in series, a first heat exchanger, a first heat transfer pipe, and a valve disposed on the exhaust pipe and / or the first heat transfer pipe; The second heat acquisition module includes a coolant line of the engine connected in series, a second heat exchanger, a second heat transfer line, and valves disposed on the coolant line of the engine and / or the second heat transfer line; The third heat acquisition module includes a generator coolant pipeline connected in series, a third heat exchanger, a third heat transmission pipeline, and valves installed on the generator coolant pipeline and / or the third heat transmission pipeline.
4. The thermal management system according to claim 2 or 3, wherein, The characteristic temperature of the range extender includes the exhaust temperature of the engine, the coolant temperature of the engine, and the coolant temperature of the generator. When the characteristic temperature of the range extender and the temperature of the heat storage device meet the heat collection conditions, the controller controls the operation of the heat collection device, including: When the exhaust temperature of the engine is higher than the temperature of the heat storage device, the first heat collection module is controlled to operate, so as to collect the exhaust heat of the engine through the first heat collection module and store the exhaust heat in the heat storage device. When the engine coolant temperature is higher than the temperature of the heat storage device, the second heat collection module is controlled to operate, so as to collect the engine coolant heat through the second heat collection module and store the engine coolant heat in the heat storage device. When the coolant temperature of the generator is higher than the temperature of the heat storage device, the third heat acquisition module is controlled to operate, so as to collect the coolant heat of the generator through the third heat acquisition module and store the coolant heat of the generator into the heat storage device.
5. The thermal management system according to claim 1, wherein, The preheating device includes at least one of the following: The first preheating module is disposed between the heat storage device and the engine, and is used to preheat the engine oil. The second preheating module is disposed between the heat storage device and the engine, and is used to preheat the coolant of the engine; The third preheating module is located between the heat storage device and the generator, and is used to preheat the coolant of the generator. The fourth preheating module is located between the heat storage device and the hydraulic oil tank, and is used to preheat the hydraulic oil in the hydraulic oil tank. The fifth preheating module is located between the heat storage device and the power battery, and is used to preheat the coolant of the power battery.
6. The thermal management system according to claim 5, wherein: The first preheating module includes a first preheating pipeline, a first preheater, an engine oil pipeline connected in series, and valves disposed on the first preheating pipeline and / or the engine oil pipeline. The second preheating module includes a second preheating pipeline, a second preheater, an engine coolant pipeline connected in series, and valves disposed on the second preheating pipeline and / or the engine coolant pipeline. The third preheating module includes a third preheating pipeline, a third preheater, a generator coolant pipeline connected in series, and valves installed on the third preheating pipeline and / or the generator coolant pipeline. The fourth preheating module includes a fourth preheating pipeline, a fourth preheater, a hydraulic oil pipeline connected in series, and valves installed on the fourth preheating pipeline and / or the hydraulic oil pipeline; The fifth preheating module includes a fifth preheating pipeline, a fifth preheater, a coolant pipeline for the power battery connected in series, and valves installed on the fifth preheating pipeline and / or the coolant pipeline for the power battery.
7. The thermal management system according to claim 5 or 6, wherein, The controller controls the operation of the preheating device, including: If one of the first to fifth preheating modules meets the operating conditions, the preheating module is controlled to operate. If multiple preheating modules in the first to fifth preheating modules meet the operating conditions, the preheating module to be operated is determined from the multiple preheating modules according to the operating status of the range extender, and the preheating module to be operated is controlled to run.
8. The thermal management system according to claim 7, wherein, The controller determines the preheating module to be operated from the plurality of preheating modules based on the operating status of the range extender, including: When the range extender is in a stopped state, the plurality of preheating modules are used as preheating modules to be operated; When the range extender is in operation, the preheating module to be operated is determined according to the priority of the plurality of preheating modules.
9. The thermal management system according to claim 7, wherein, The operating conditions of one of the first to fifth preheating modules configured in the controller include one of the following: The engine oil temperature is below the oil temperature threshold. The engine coolant temperature is below a first coolant temperature threshold. The coolant temperature of the generator is lower than the second coolant temperature threshold. The coolant temperature of the power battery is lower than the third coolant temperature threshold. The temperature of the hydraulic oil is below the hydraulic oil temperature threshold.
10. A thermal management method, comprising: The characteristic temperature of the range extender of the construction machinery equipment, the temperature of the heat storage device, and the ambient temperature of the construction machinery equipment are obtained. When the characteristic temperature of the range extender and the temperature of the heat storage device meet the heat collection conditions, the heat collection device is controlled to operate so as to collect the heat generated by the range extender and store the heat generated by the range extender in the heat storage device. When the ambient temperature of the construction machinery is below the ambient temperature threshold, the preheating device is controlled to operate, so as to obtain heat from the heat storage device through the preheating device, and preheat at least one of the range extender, power battery and hydraulic oil on the construction machinery based on the obtained heat.
11. A controller, comprising: A module for performing the thermal management method as described in claim 10.
12. A controller, comprising: Memory; as well as A processor coupled to the memory, the processor being configured to execute the thermal management method of claim 10 based on instructions stored in the memory.
13. A computer-readable storage medium having stored thereon computer instructions that, when executed by a processor, implement the thermal management method of claim 10.
14. A computer program product having stored computer instructions thereon, which, when executed by a processor, implement the thermal management method as described in claim 10.
15. An engineering machinery equipment, comprising: The thermal management system as described in any one of claims 1 to 9.