A thermal management method, system and engineering machine apparatus

Abstract

The present disclosure provides a heat management method, system and engineering machinery device, relating to the technical field of engineering machinery. The heat management system comprises a heat collection device, a heat storage device, a preheating device and a controller. The controller is configured to: in the case that the temperature of the range extender of the engineering machinery device and the temperature of the heat storage device satisfy the heat collection condition, control the heat collection device to operate to collect the heat generated by the range extender through the heat collection device, and store the heat generated by the range extender to the heat storage device; in the case that the ambient temperature of the engineering machinery device is lower than the ambient temperature threshold, control the preheating device to operate to obtain the heat in the heat storage device through the preheating device, and preheat at least one of the range extender, the power battery and the hydraulic oil on the engineering machinery device based on the obtained heat. Through the above system, the energy consumption of the hybrid range extender engineering machinery device can be effectively reduced, and the running performance of the whole machine under low temperature working condition can be improved.

Description

Technical Field

[0001] This disclosure relates to the field of engineering machinery technology, and in particular to a thermal management method, system and equipment for engineering machinery. Background Technology

[0002] With breakthroughs in new energy technologies, new energy construction machinery and equipment have experienced rapid development. Hybrid range-extended construction machinery and equipment can effectively reduce energy consumption while also compensating for the difficulty of refueling pure electric construction machinery and equipment; therefore, the installed capacity of hybrid range-extended construction machinery and equipment has grown rapidly in recent years.

[0003] Range extenders are primarily used in construction machinery such as loaders and wide-body dump trucks. In practical applications, the operating environment of hybrid range-extended construction machinery is often complex and harsh. For example, the machinery may need to operate in extreme temperature environments (such as low and high temperatures). However, in low-temperature environments, the range extender in hybrid range-extended construction machinery experiences starting difficulties. Simultaneously, at low temperatures, hybrid range-extended construction machinery also suffers from significant degradation in the charging and discharging performance of the power battery, or even an inability to charge or discharge, as well as poor overall machine performance in low-temperature environments. Summary of the Invention

[0004] According to a first aspect of this disclosure, a thermal management system is proposed, comprising: a heat acquisition device for acquiring heat generated by a range extender on an engineering machinery equipment; a heat storage device connected to the heat acquisition device for storing heat; a preheating device connected to the heat storage device; and a controller configured to: control the operation of the heat acquisition device to acquire heat generated by the range extender and store the heat generated by the range extender in the heat storage device when the characteristic temperature of the range extender and the temperature of the heat storage device meet the heat acquisition conditions; and control the operation of the preheating device to acquire heat from the heat storage device when the ambient temperature of the engineering machinery equipment is lower than an ambient temperature threshold, and preheat at least one of the range extender, power battery, and hydraulic oil on the engineering machinery equipment based on the acquired heat.

[0005] In some embodiments, the heat collection device includes at least one of the following: a first heat collection module disposed between the engine and the heat storage device in the range extender, for collecting exhaust heat from the engine; a second heat collection module disposed between the engine and the heat storage device in the range extender, for collecting coolant heat from the engine; and a third heat collection module disposed between the generator and the heat storage device in the range extender, for collecting coolant heat from the generator.

[0006] In some embodiments, the first heat acquisition module includes an exhaust pipe, a first heat exchanger, a first heat transfer pipe, and valves disposed on the exhaust pipe and / or the first heat transfer pipe, connected in series; the second heat acquisition module includes a coolant pipe, a second heat exchanger, a second heat transfer pipe, and valves disposed on the coolant pipe and / or the second heat transfer pipe, connected in series; the third heat acquisition module includes a coolant pipe, a third heat exchanger, a third heat transfer pipe, and valves disposed on the coolant pipe and / or the third heat transfer pipe, connected in series with the generator.

[0007] In some embodiments, 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 by: controlling the operation of a first heat collection module when the exhaust temperature of the engine is higher than the temperature of the heat storage device, to collect exhaust heat from the engine and store it in the heat storage device; controlling the operation of a second heat collection module when the coolant temperature of the engine is higher than the temperature of the heat storage device, to collect coolant heat from the engine and store it in the heat storage device; and controlling the operation of a third heat collection module when the coolant temperature of the generator is higher than the temperature of the heat storage device, to collect coolant heat from the generator and store it in the heat storage device.

[0008] In some embodiments, the preheating device includes at least one of the following: a first preheating module disposed between the heat storage device and the engine for preheating the engine oil; a second preheating module disposed between the heat storage device and the engine for preheating the engine coolant; a third preheating module disposed between the heat storage device and the generator for preheating the generator coolant; a fourth preheating module disposed between the heat storage device and the hydraulic oil tank for preheating the hydraulic oil in the hydraulic oil tank; and a fifth preheating module disposed between the heat storage device and the power battery for preheating the power battery coolant.

[0009] In some embodiments, the first preheating module includes a first preheating pipeline, a first preheater, an engine oil pipeline, and valves disposed on the first preheating pipeline and / or the engine oil pipeline in series; the second preheating module includes a second preheating pipeline, a second preheater, an engine coolant pipeline, and valves disposed on the second preheating pipeline and / or the engine coolant pipeline in series; the third preheating module includes a third preheating pipeline, a third preheater, a generator coolant pipeline, and valves disposed on the third preheating pipeline and / or the generator coolant pipeline in series; the fourth preheating module includes a fourth preheating pipeline, a fourth preheater, a hydraulic oil pipeline, and valves disposed on the fourth preheating pipeline and / or the hydraulic oil pipeline in series; the fifth preheating module includes a fifth preheating pipeline, a fifth preheater, a power battery coolant pipeline, and valves disposed on the fifth preheating pipeline and / or the power battery coolant pipeline in series.

[0010] In some embodiments, the controller controlling the operation of the preheating device includes: controlling the operation of one of the first to fifth preheating modules when the operating conditions are met; and determining the preheating module to be operated from the plurality of preheating modules according to the operating status of the range extender when the operating conditions are met, 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 plurality of preheating modules according to the operating state of the range extender, including: when the range extender is in a stopped state, selecting the plurality of preheating modules as preheating modules to be operated; and when the range extender is in a running state, determining the preheating module to be operated according to the priority of the plurality of preheating modules.

[0012] In some embodiments, the operating conditions of one of the first to fifth preheating modules configured by the controller include one of the following: the engine oil temperature is lower than the engine oil temperature threshold; the engine coolant temperature is lower than the first coolant temperature threshold; the generator coolant temperature is lower than the second coolant temperature threshold; the power battery coolant temperature is lower than the third coolant temperature threshold; and the hydraulic oil temperature is lower than the hydraulic oil temperature threshold.

[0013] According to a second aspect of this disclosure, a thermal management method is provided, comprising: acquiring the characterization temperature of a range extender of an engineering machinery equipment, the temperature of a heat storage device, and the ambient temperature of the engineering machinery equipment; when the characterization temperature of the range extender and the temperature of the heat storage device meet the heat acquisition conditions, controlling the operation of a heat acquisition device to acquire heat generated by the range extender through the heat acquisition device and storing the heat generated by the range extender in the heat storage device; when the ambient temperature of the engineering machinery equipment is lower than an ambient temperature threshold, controlling the operation of a preheating device to acquire heat from the heat storage device through the preheating device, and preheating at least one of the range extender, power battery, and hydraulic oil on the engineering machinery equipment based on the acquired heat.

[0014] According to a third aspect of this disclosure, a controller is provided, comprising: a module for performing the thermal management method as described above.

[0015] According to a fourth aspect of this 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 this disclosure, a computer-readable storage medium is provided having computer instructions stored thereon that, when executed by a processor, implement the thermal management method as described above.

[0017] According to a sixth aspect of this disclosure, a computer program product is provided having computer instructions stored thereon that, when executed by a processor, implement the thermal management method as described above.

[0018] According to a seventh aspect of this disclosure, an engineering machinery device is provided, comprising: a thermal management system as described above. Attached Figure Description

[0019] The accompanying drawings, which form part of this specification, illustrate embodiments of this disclosure and, together with the specification, serve to explain the principles of this disclosure.

[0020] This disclosure can be more clearly understood with reference to the accompanying drawings and the following detailed description.

[0021] Figure 1 This is a schematic diagram of the structure of a thermal management system according to some embodiments of the present disclosure.

[0022] Figure 2 This is a schematic diagram of the structure of a thermal management system according to other embodiments of the present disclosure.

[0023] Figure 3 This is a schematic flowchart of a thermal management method according to some embodiments of the present disclosure.

[0024] Figure 4 This is a schematic flowchart of a thermal management method according to other embodiments of the present disclosure.

[0025] Figure 5 This is a schematic flowchart of another part of a thermal management method according to some other embodiments of the present disclosure.

[0026] Figure 6 This is a schematic diagram of the structure of a controller according to some embodiments of the present disclosure.

[0027] Figure 7 This is a schematic diagram of the structure of a controller according to some other embodiments of the present disclosure.

[0028] Figure 8 This is a schematic diagram of the structure of an engineering machinery device according to some embodiments of the present disclosure. Detailed Implementation

[0029] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present disclosure.

[0030] At the same time, it should be understood that, for ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn according to actual scale.

[0031] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use.

[0032] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0033] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0035] To make the objectives, technical solutions, and advantages of this disclosure clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0036] The range-extended construction machinery equipment in related technologies suffers from problems such as difficulty in starting the range extender in low-temperature environments, difficulty in charging and discharging the power battery, and poor overall machine performance.

[0037] To address the problems existing in related technologies, this disclosure proposes a thermal management method, system, and engineering machinery equipment. This method can recover and store the waste heat generated during the normal operation of the range extender in a hybrid range-extended engineering machinery equipment. In low-temperature environments, the recovered heat can be used to preheat at least one of the range extender, power battery, and hydraulic oil in the engineering machinery equipment. This addresses the problems existing in hybrid range-extended engineering machinery equipment in related technologies, thereby improving the performance of hybrid range-extended engineering machinery equipment at low temperatures and enhancing its environmental adaptability.

[0038] Figure 1 This is a schematic diagram of the structure of a thermal management system according to some embodiments of the present disclosure. Figure 1 As shown, the thermal management system includes a heat acquisition device 1, a heat storage device 2, a preheating device 3, and a controller 4.

[0039] Heat collection device 1 is used to collect the heat generated by the range extender on the engineering machinery equipment.

[0040] In some embodiments, the heat acquisition device 1 includes at least one of a first heat acquisition module, a second heat acquisition module, and a third heat acquisition module. The first heat acquisition module is disposed between the engine and the heat storage device in the range extender, and is used to acquire heat carried by the engine's exhaust. The second heat acquisition module is disposed between the engine and the heat storage device in the range extender, and is used to acquire heat carried by the engine's coolant. The third heat acquisition module is disposed between the generator and the heat storage device in the range extender, and is used to acquire heat carried by the generator's coolant.

[0041] The heat storage device 2, connected to the heat harvesting device 1, is used to store heat. In some examples, the heat storage device 2 includes a heat storage unit and an insulated container for storing the heat harvested by the heat harvesting device.

[0042] The preheating device 3, connected to the heat storage device 2, is used to preheat at least one of the range extender, power battery, and hydraulic oil in the engineering machinery equipment.

[0043] In some embodiments, the preheating device 3 includes 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 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 engine coolant. The third preheating module is disposed between the heat storage device and the generator, and is used to preheat the generator coolant. The fourth preheating module is disposed 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 disposed between the heat storage device and the power battery, and is used to preheat the power battery coolant.

[0044] The controller 4 is configured 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.

[0045] There are several ways to control the operation of a heat acquisition device using a controller. The following describes two examples of these methods.

[0046] In a first embodiment, the heat acquisition device 1 includes a first heat acquisition module and a second heat acquisition module. In this embodiment, when both the first and second heat acquisition modules meet the heat acquisition conditions, the controller 4 controls the operation of both the first and second heat acquisition modules; when only one of the first and second heat acquisition modules meets the heat acquisition conditions, the controller 4 controls the heat acquisition module that meets the heat acquisition conditions to operate.

[0047] Furthermore, in the first embodiment, the characteristic temperature of the range extender includes the engine exhaust temperature and the engine coolant temperature; the heat collection condition corresponding to the first heat collection module includes the engine exhaust temperature being higher than the temperature of the heat storage device, and the heat collection condition corresponding to the second heat collection module includes the engine coolant temperature being higher than the temperature of the heat storage device. Accordingly, the controller 4 controls the operation of the heat collection device specifically by: controlling the first heat collection module to operate when the engine exhaust temperature 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 in the heat storage device 2; and controlling the second heat collection module to operate when the engine coolant temperature is higher than the temperature of the heat storage device, so as to collect the coolant heat of the engine through the second heat collection module and store the coolant heat in the heat storage device 2.

[0048] In the second embodiment, the heat acquisition device 1 includes a first heat acquisition module, a second heat acquisition module, and a third heat acquisition module. In this embodiment, when all three heat acquisition modules meet the heat acquisition conditions, the controller 4 controls the operation of the first to third heat acquisition modules; when only one or two of the first to third heat acquisition modules meet the heat acquisition conditions, the controller 4 controls the heat acquisition module that meets the heat acquisition conditions to operate.

[0049] Furthermore, in the second embodiment, the characteristic temperatures of the range extender include the engine exhaust temperature, the engine coolant temperature, and the generator coolant temperature; the heat collection conditions corresponding to the first heat collection module include the engine exhaust temperature being higher than the temperature of the heat storage device, the heat collection conditions corresponding to the second heat collection module include the engine coolant temperature being higher than the temperature of the heat storage device, and the heat collection conditions corresponding to the third heat collection module include the generator coolant temperature being higher than the temperature of the heat storage device. Accordingly, the controller 4 controlling the operation of the heat collection device may specifically include: when the engine exhaust temperature is higher than the temperature of the heat storage device, controlling the first heat collection module to operate, so as to collect the engine exhaust heat through the first heat collection module and store the exhaust heat in the heat storage device 2; when the engine coolant temperature is higher than the temperature of the heat storage device, controlling the second heat collection module 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 2; when the generator coolant temperature is higher than the temperature of the heat storage device, controlling the third heat collection module to operate, so as to collect the generator coolant heat through the third heat collection module and store the generator coolant heat in the heat storage device 2.

[0050] Furthermore, in practical implementation, the constituent modules of the heat collection device and the corresponding heat collection conditions for each module can be flexibly adjusted. For example, the heat collection device may include only a first heat collection module and a third heat collection module, or only a second heat collection module and a third heat collection module. For example, the heat collection conditions corresponding to the first heat collection module may be set as follows: the engine exhaust temperature 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 conditions corresponding to the second heat collection module may be set as follows: the engine coolant temperature 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 conditions corresponding to the third heat collection module may be set as follows: the generator coolant temperature 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 can be set to a range of 50℃ to 90℃.

[0051] Controller 4 is also configured to: when the ambient temperature of the construction machinery is below an ambient temperature threshold, control the preheating device 3 to operate, so as to obtain heat from the heat storage device 2 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. There are multiple implementations for the controller to control the operation of the preheating device; two implementations are described below as examples.

[0052] In a first embodiment, the preheating device 3 includes a first preheating module, a second preheating module, and a third preheating module. When one of the first to third preheating modules meets the operating conditions, the controller controls that preheating module to operate; when multiple preheating modules meet the operating conditions, the controller controls all of them to operate. Further, in the above embodiment, the operating conditions of the first preheating module may include the engine oil temperature being lower than an engine oil temperature threshold; the operating conditions of the second preheating module may include the engine coolant temperature being lower than a first coolant temperature threshold; and the operating conditions of the third preheating module may include the generator coolant temperature being lower than a second coolant temperature threshold. Accordingly, the controller 4's control of the preheating device operation can specifically include: controlling the first preheating module to operate when the engine oil temperature is lower than the engine oil temperature threshold, so as to preheat the engine oil through the first preheating module; controlling the second preheating module to operate when the engine coolant temperature is lower than the first coolant temperature threshold, so as to preheat the engine coolant through the second preheating module; and controlling the third preheating module to operate when the generator coolant temperature is lower than the second coolant temperature threshold, so as to preheat the generator coolant through the third preheating module. 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 range of the engine oil temperature threshold, the first coolant temperature threshold, and the second coolant temperature threshold can all be set to 10℃~20℃.

[0053] In the second embodiment, the preheating device includes first to fifth preheating modules. When one of the first to fifth preheating modules meets the operating conditions, the controller 4 controls that preheating module to operate; when multiple preheating modules meet the operating conditions, the controller 4 controls multiple preheating modules to operate. Further, in the above embodiment, the operating conditions of the first preheating module may include the engine oil temperature being lower than an engine oil temperature threshold; the operating conditions of the second preheating module may include the engine coolant temperature being lower than a first coolant temperature threshold; the operating conditions of the third preheating module may include the generator coolant temperature being lower than a second coolant temperature threshold; the operating conditions of the fourth preheating module may include the hydraulic oil temperature being lower than a hydraulic oil temperature threshold; and the operating conditions of the fifth preheating module may include the power battery coolant temperature being lower than a third coolant temperature threshold. Accordingly, the controller 4's control of the preheating device operation may specifically include: controlling the first preheating module to operate when the engine oil temperature is lower than the engine oil temperature threshold, so as to preheat the engine oil through the first preheating module; controlling the second preheating module to operate when the engine coolant temperature is lower than the first coolant temperature threshold, so as to preheat the engine coolant through the second preheating module; controlling the third preheating module to operate when the generator coolant temperature is lower than the second coolant temperature threshold, so as to preheat the generator coolant through the third preheating module; controlling the fourth preheating module to operate when the hydraulic oil temperature is lower than the hydraulic oil temperature threshold, so as to preheat the hydraulic oil through the fourth preheating module; and controlling the fifth preheating module to operate when the power battery coolant temperature is lower than the third coolant temperature threshold, so as to preheat the power battery coolant through the fifth preheating module. The values ​​of the first, second, and third coolant temperature thresholds can be the same or different.

[0054] Furthermore, in practical implementation, the composition modules of the preheating device, the operating conditions corresponding to each preheating module, and the operating logic of the controller controlling the preheating device can be flexibly adjusted. For example, the preheating device may only include the first to fourth preheating modules, or only the second to fifth preheating modules, etc. For example, the operating conditions corresponding to the first preheating module may be set as follows: the engine oil temperature is lower than the engine oil temperature threshold, and the temperature of the heat storage device is higher than the engine oil temperature threshold. The operating conditions corresponding to the second preheating module may be set as follows: the engine coolant temperature 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 conditions corresponding to the third preheating module may be set as follows: the generator coolant temperature 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 conditions corresponding to the fourth preheating module may be set as follows: the hydraulic oil temperature 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 conditions corresponding to the fifth preheating module may be set as follows: the power battery coolant temperature 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 example, the controller's operating logic for controlling the preheating device can also be set as follows: when multiple preheating modules in the first to fifth preheating modules meet the operating conditions, the controller determines the preheating module to be operated from among the multiple preheating modules according to the operating status of the range extender, and controls the preheating module to be operated to run.

[0055] In this embodiment, the system described above can recover and store the waste heat generated during normal operation of the range extender in a hybrid range-extended construction machinery device. In low-temperature environments, the recovered heat can be used to preheat at least one of the range extender, power battery, and hydraulic oil in the construction machinery device. This addresses the problems existing in related technologies for hybrid range-extended construction machinery devices, thereby improving their performance at low temperatures and enhancing their environmental adaptability. Simultaneously, the system can reduce energy consumption caused by using positive temperature coefficient (PTC) heating devices to preheat the construction machinery device under low-temperature conditions, thus significantly reducing the energy consumption of the range extender and the entire machine.

[0056] Figure 2 This is a schematic diagram of the structure of a thermal management system according to other embodiments of this disclosure. For example... Figure 2 As shown, the thermal management system includes a heat acquisition device, a heat storage device 2, a preheating device, and a controller 4.

[0057] The heat acquisition device includes a first heat acquisition module, a second heat acquisition module, and a third heat acquisition module. In some embodiments, such as Figure 2As shown, the first heat acquisition module includes an exhaust pipe 111 of the engine, a first heat exchanger 112, a first heat transfer pipe 113 connected in series, a valve 114 installed on the exhaust pipe, and a valve 115 installed on the first heat transfer pipe. The second heat acquisition module includes a coolant pipe 121 of the engine, a second heat exchanger 122, a second heat transfer pipe 123 connected in series, a valve 124 installed on the coolant pipe, and a valve 125 installed on the second heat transfer pipe. The third heat acquisition module includes a coolant pipe 131 of the generator, a third heat exchanger 132, a third heat transfer pipe 133 connected in series, a valve 134 installed on the coolant pipe, and a valve 135 installed on the third heat transfer pipe. Furthermore, in specific implementations, the number of valves and their installation positions in the first to third heat acquisition modules can be flexibly adjusted. For example, for the first heat acquisition module, a valve can be installed only on the engine exhaust pipe 111, without installing a valve on the first heat transfer pipe 113. Alternatively, for the first heat acquisition module, a valve may be installed only on the first heat transmission pipeline 113, without installing a valve on the engine exhaust pipeline 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 acquisition module meets the heat acquisition conditions 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 employs Figure 2The structure shown includes the controller 4 controlling the operation of the heat collection device by: determining 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 so, the controller 4 controls valves 114 and 115 to open, thereby connecting the exhaust pipe 111 to the first heat exchanger 112 and the first heat transfer pipe 113 to the first heat exchanger 112, and causing the first heat exchanger and the heat storage device to start working to collect and store the exhaust waste heat of the engine 14; otherwise, valves 114 and 115 are closed and the first heat exchanger and the heat storage device are not working, that is, exhaust heat collection is not performed or the collection of exhaust heat is stopped. Furthermore, the controller 4's control of the heat collection device also includes: the controller 4 determining 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 so, the controller 4 controls valves 124 and 125 to open, thereby connecting the coolant pipeline 121 of the engine 14 to the second heat exchanger 122 and the second heat transfer pipeline 123 to the second heat exchanger 122, and causing the second heat exchanger and the heat storage device to start working to collect and store the residual heat of the coolant of the engine 14; otherwise, the controller closes valves 124 and 125 and causes the second heat exchanger and the heat storage device to stop working, that is, not collecting engine coolant heat or stopping collecting engine coolant heat. Furthermore, the controller 4's control of the heat collection device also includes: the controller 4 determining 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 so, the controller 4 controls valves 134 and 135 to open, thereby connecting the coolant pipeline 131 of the generator 15 to the third heat exchanger 132 and the third heat transfer pipeline 133 to the third heat exchanger 132, and causing the third heat exchanger and the heat storage device to start working to collect and store the waste heat of the coolant of the generator 15; otherwise, valves 134 and 135 are closed, and the third heat exchanger and the heat storage device are not working, that is, the heat of the coolant of the generator 15 is not collected or the collection of the heat of the generator coolant is stopped.

[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, such as Figure 2As shown, the first preheating module includes a first preheating pipe 311, a first preheater 312, an engine oil pipe 313, a valve 315 installed on the first preheating pipe, and a valve 314 installed on the engine oil pipe, all connected in series. The second preheating module includes a second preheating pipe 321, a second preheater 322, an engine coolant pipe 323, a valve 325 installed on the second preheating pipe, and a valve 324 installed on the engine coolant pipe, all connected in series. The third preheating module includes a third preheating pipe 331, a third preheater 332, a generator coolant pipe 333, a valve 335 installed on the third preheating pipe, and a valve 334 installed on the generator coolant pipe, all connected in series. The fourth preheating module includes a fourth preheating pipe 341, a fourth preheater 342, a hydraulic oil pipe 343, a valve 345 installed on the fourth preheating pipe, and a valve 344 installed on the hydraulic oil pipe, all connected in series. The fifth preheating module includes a fifth preheating pipeline 351 connected in series, a fifth preheater 352, a coolant pipeline 353 for the power battery, a valve 355 installed on the fifth preheating pipeline, and a valve 354 installed on the coolant pipeline for the power battery.

[0061] The controller 4 is configured to acquire the engine oil temperature, engine coolant temperature, generator coolant temperature, hydraulic oil temperature, and power battery temperature; determine whether the operating conditions of the first to fifth preheating modules are met based on the acquired temperatures; if one of the first to fifth preheating modules meets the operating conditions, control that preheating module to operate; if multiple preheating modules meet the operating conditions, determine the preheating module to be operated from among the multiple preheating modules based on the operating status of the range extender, and control the preheating module to be operated to operate.

[0062] In some embodiments, the preheating device employs Figure 2The structure is shown. In these embodiments, when one of the first to fifth preheating modules meets the operating conditions, the controller controls the operation of a preheating module by: determining whether the engine oil temperature of the engine 14 is lower than the engine oil temperature threshold and whether the temperature of the heat storage device 2 is higher than the engine oil temperature threshold; if yes, the controller controls valves 314 and 315 to open, so that the first preheating pipeline 311 is connected to the first preheater 312 and the engine oil pipeline 313 is connected to the first preheater 312, and the first preheater 312 is operated to preheat the engine oil; otherwise, valves 314 and 315 are closed, that is, the engine oil is not preheated or the preheating of the engine oil is stopped. Furthermore, the controller's control of a preheating module may also include: determining whether the coolant temperature of the engine 14 is lower than a first coolant temperature threshold and whether the temperature of the heat storage device is higher than the first coolant temperature threshold; if so, the controller controls valves 324 and 325 to open, so that the second preheating pipe 321 is connected to the second preheater 322 and the engine coolant pipe 323 is connected to the second preheater 322, and the second preheater 322 is activated to preheat the engine coolant; otherwise, valves 324 and 325 are closed, that is, the engine coolant is not preheated or the preheating of the engine coolant is stopped. Furthermore, the controller's control of a preheating module may also include: determining whether the generator's coolant temperature is lower than a second coolant temperature threshold and whether the temperature of the heat storage device is higher than the second coolant temperature threshold; if so, the controller controls valves 334 and 335 to open, so that the third preheating pipeline 331 is connected to the third preheater 332 and the generator's coolant pipeline 333 is connected to the third preheater 332, and the third preheater 332 is activated to preheat the coolant of the generator 15; otherwise, valves 334 and 335 are closed, that is, the generator's coolant is not preheated or the preheating of the generator's coolant is stopped. Furthermore, the controller's control of a preheating module may also include: determining whether the temperature of the hydraulic oil is lower than the hydraulic oil temperature threshold and whether the temperature of the heat storage device is higher than the hydraulic oil temperature threshold; if so, the controller controls valves 344 and 345 to open, so that the fourth preheating pipeline 341 is connected to the fourth preheater 342 and the hydraulic oil pipeline 343 of the hydraulic oil tank 16 is connected to the fourth preheater 342, and the fourth preheater 342 is made to work to preheat the hydraulic oil in the hydraulic oil tank 16; otherwise, valves 344 and 345 are closed, and the hydraulic oil is not preheated or the preheating of the hydraulic oil is stopped.Furthermore, the controller's control of a preheating module may also include: determining whether the coolant temperature of the power battery is lower than the third coolant temperature threshold and whether the temperature of the heat storage device is higher than the third coolant temperature threshold; if so, the controller controls valves 354 and 355 to open, so that the fifth preheating pipeline 351 is connected to the fifth preheater 352 and the coolant pipeline 353 of the power battery 17 is connected to the fifth preheater 352, and the fifth preheater 352 is made to work to preheat the coolant of the power battery; otherwise, valves 354 and 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] Furthermore, in the above embodiments, when multiple preheating modules among the first to fifth preheating modules meet the operating conditions, the controller controls the operation of multiple preheating modules as follows: when the range extender is in a stopped state, the multiple preheating modules that meet the operating conditions are designated as preheating modules to be operated, and the preheating modules to be operated are controlled to operate; when the range extender is in a running state, the preheating modules to be operated are determined according to the priority of the multiple preheating modules, and the preheating modules to be operated are controlled to operate. For example, when the range extender is in a stopped state, priority is given to ensuring the preheating of the engine oil and the engine coolant; when the range extender is in a running state, the flow rate of each preheating module is evenly distributed.

[0064] In this embodiment, the above system achieves the following beneficial effects: First, by preheating at least one of the engine, generator, hydraulic oil, and power battery using pre-collected waste heat and residual heat generated during the operation of the range extender under low-temperature conditions, the energy consumption caused by the use of a PTC heating device during cold starts of the vehicle under low-temperature conditions can be reduced, significantly lowering the energy consumption of the range extender and the entire unit; Second, by preheating the engine in the range extender under low-temperature conditions, the preheated engine can reach its normal operating temperature, thereby helping to shorten the start-up time of the range extender and promoting more complete combustion of engine oil, reducing harmful emissions. By reducing emissions, the problems of difficult start-up of range extenders and high emissions in low-temperature environments can be effectively solved. Preheating the hydraulic oil under low-temperature conditions enhances its fluidity, resulting in faster response and smoother operation of the entire hydraulic system, thus improving the vehicle's low-temperature performance. Preheating the power battery under low-temperature conditions effectively improves its charging and discharging performance and extends its lifespan. By flexibly adjusting the heat collection and preheating control strategies according to actual operating conditions, the waste heat generated by the range extender can be utilized more efficiently, improving the overall environmental adaptability of the vehicle.

[0065] Figure 3This is a schematic flowchart of a thermal management method according to some embodiments of the present disclosure. Figure 3 As shown, the thermal management method is executed by the controller and includes steps S31 to S33.

[0066] In step S31, the characteristic temperature of the range extender of the engineering machinery equipment, the temperature of the heat storage device, and the ambient temperature of the engineering machinery equipment are obtained.

[0067] In some examples, the characteristic temperature of the range extender is collected by a temperature sensor installed on the range extender and the collected characteristic temperature of the range extender is sent to the controller; the temperature of the thermal storage device is collected by a temperature sensor installed on the thermal storage device and the collected temperature of the thermal storage device is sent to the controller; the ambient temperature of the construction machinery is collected by a temperature sensor installed on the outside of the construction machinery and the collected ambient temperature is sent to the controller.

[0068] In addition, the above temperature can also be obtained through other means.

[0069] In step S32, 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.

[0070] For details regarding the structure of the heat collection device, the heat collection conditions, and how the controller specifically controls the operation of the heat collection device, please refer to the relevant descriptions in the embodiments shown above.

[0071] In step S33, 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.

[0072] For details regarding the structure of the preheating device, its operating conditions, and how the controller specifically controls its operation, please refer to the relevant descriptions in the embodiments shown above.

[0073] In this embodiment of the disclosure, by using a heat source collection device to collect exhaust heat from the engine, waste heat from the coolant, and waste heat from the generator's coolant during the operation of the range extender, and storing the collected heat in a heat storage device, when the ambient temperature is lower than a set ambient temperature threshold, the engine oil, coolant, etc. are preheated by a preheating device based on the stored heat to reach the set target temperature value. This achieves the effects of energy saving and consumption reduction, reducing vehicle cold start emissions, and improving vehicle low-temperature operating performance, and solves the problems of cold start difficulties in low-temperature conditions for hybrid range-extended engineering machinery.

[0074] The following combination Figure 4 and Figure 5 Further embodiments of the thermal management methods of this disclosure will be described. For example... Figure 4 As shown, in some other embodiments of this disclosure, the heat acquisition and control process in the thermal management method includes steps S401 to S411.

[0075] In step S401, the configuration is initialized.

[0076] In some examples, the initialization configuration includes setting the temperature thresholds required by the thermal management control logic. For example, setting the ambient temperature threshold Ta, with a reference range of 10~20℃; setting the temperature threshold Tb of the heat storage medium in the heat storage device, with a reference range of 50~90℃; setting the generator coolant temperature threshold Tc, with a reference range of 10~20℃; setting the engine oil temperature threshold Td, with a reference range of 10~20℃; setting the engine coolant temperature threshold Te, with a reference range of 10~20℃; setting the hydraulic oil temperature threshold Tf, with a reference range of 10~20℃; and setting the power battery temperature threshold Tg, with a reference range of 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 executed; otherwise, step S403 is executed.

[0078] In step S403, the thermal management logic is not activated.

[0079] In step S404, the thermal management logic is activated.

[0080] In step S405, the engine exhaust temperature, engine coolant temperature, and generator coolant temperature are obtained.

[0081] For example, the engine exhaust temperature is collected by a temperature sensor installed on the engine exhaust pipe, the engine coolant temperature is collected by a temperature sensor installed on the engine coolant pipe, and the generator coolant temperature is collected by a temperature sensor installed 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 executed; otherwise, step S407 is not executed.

[0083] In step S407, the first heat acquisition module is controlled to operate.

[0084] For details on how to control the operation of the first heat acquisition module, please refer to the relevant descriptions in the previously described 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 executed; otherwise, step S409 is not executed.

[0086] In step S409, the second heat acquisition module is controlled to operate.

[0087] For details on how to control the operation of the second heat acquisition module, please refer to the relevant descriptions in the previously described 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 executed; otherwise, step S411 is not executed.

[0089] In practice, steps S406, S408, and S410 can be executed in parallel or sequentially according to a set order.

[0090] In step S411, the third heat acquisition module is controlled to operate.

[0091] For details on how to control the operation of the third heat acquisition module, please refer to the relevant descriptions in the previously described embodiments.

[0092] In this embodiment of the disclosure, the above method can effectively collect and store the waste heat generated during the operation of the range extender. This helps to preheat the range extender, power battery and hydraulic oil on the engineering machinery equipment based on the stored heat, thereby helping to improve the overall performance of the machine under low temperature conditions.

[0093] like Figure 5 As shown, in some other embodiments of this disclosure, the preheating control process in the thermal management method includes steps S51 to S54.

[0094] In step S51, the temperatures of engine oil, engine coolant, generator coolant, hydraulic oil, and power battery coolant are obtained.

[0095] In some examples, the engine oil temperature is collected by a temperature sensor located on the engine oil line. The engine coolant temperature is collected by a temperature sensor located on the engine coolant line. The alternator coolant temperature is collected by a temperature sensor located on the alternator coolant line. The hydraulic oil temperature is collected by a temperature sensor located on the hydraulic oil line. The battery coolant temperature is collected by a temperature sensor located on the battery coolant line. The temperatures collected by each temperature sensor are then sent to the controller.

[0096] In step S52, based on the obtained temperature, it is determined whether the operating conditions of the preheating module are met.

[0097] In this embodiment, 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 operating conditions. For details on how to determine whether each module meets the preheating module operating conditions, please refer to the relevant descriptions in the previously described embodiments.

[0098] In step S53, if one of the preheating modules in the first to fifth preheating modules meets the operating conditions, one preheating module is controlled to operate.

[0099] For details on how to control the operation of a preheating module, please refer to the relevant descriptions in the embodiments described above.

[0100] In step S54, 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.

[0101] For details on how to control the operation of multiple preheating modules, please refer to the relevant descriptions in the embodiments described above.

[0102] In the embodiments disclosed herein, the above methods can solve the problems existing in hybrid range-extended construction machinery equipment in related technologies, thereby improving the performance of hybrid range-extended construction machinery equipment at low temperatures and enhancing the environmental adaptability of hybrid range-extended construction machinery equipment.

[0103] Figure 6 This is a schematic diagram of the structure of a controller according to some embodiments of the present disclosure. Figure 6 As shown, the controller 60 is used to execute the thermal management method as described above. The controller includes an acquisition module 61, a first control module 62, and a second control module 63.

[0104] The acquisition module 61 is used to acquire the characterization temperature of the range extender of the engineering machinery equipment, the temperature of the heat storage device, and the ambient temperature of the engineering machinery equipment.

[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 may also be stored in a computer-readable storage medium. These instructions cause a computer to work in a particular manner to produce an article of manufacture, including instructions that implement the functions specified in one or more boxes in a flowchart and / or block diagram.

[0114] This disclosure may take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects.

[0115] The thermal management methods, systems, and engineering machinery equipment according to this disclosure have now been described in detail. To avoid obscuring the concept of this disclosure, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on 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, connected to the heat storage device, includes at least one of a first to a fifth preheating module. A first preheating module, disposed between the heat storage device and the engine, is used to preheat the engine oil, including 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. A second preheating module, disposed between the heat storage device and the engine, is used to preheat the engine coolant, including 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. A third preheating module, disposed between the heat storage device and the generator, is used to preheat the... The generator's coolant is preheated via 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; a fourth preheating module is installed between the heat storage device and the hydraulic oil tank to preheat the hydraulic oil in the hydraulic oil tank, including 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; a fifth preheating module is installed between the heat storage device and the power battery to preheat the power battery coolant, including a fifth preheating pipeline, a fifth preheater, a power battery coolant pipeline connected in series, and valves installed on the fifth preheating pipeline and / or the power battery coolant pipeline; 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. 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. When multiple preheating modules in the first to fifth preheating modules meet the operating conditions, a 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, including: when the range extender is in a stopped state, the multiple preheating modules are designated as preheating modules to be operated; when the range extender is in a running state, the preheating module to be operated is determined according to the priority of the multiple preheating modules.

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 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.

6. 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, a preheating device is controlled to operate to obtain heat from the heat storage device. Based on the obtained heat, at least one of the range extender, power battery, and hydraulic oil on the construction machinery is preheated. The preheating device includes at least one of a first to a fifth preheating module. A first preheating module, disposed between the heat storage device and the engine, is used to preheat the engine oil. It includes a first preheating pipeline, a first preheater, an engine oil line, and valves disposed on the first preheating pipeline and / or the engine oil line, all connected in series. A second preheating module, disposed between the heat storage device and the engine, is used to preheat the engine coolant. It includes a second preheating pipeline, a second preheater, an engine coolant line, and valves disposed on the second preheating pipeline and / or the engine oil line, all connected in series. The third preheating module, located between the heat storage device and the generator, is used to preheat the coolant of the generator, including a third preheating pipeline, a third preheater, the generator's coolant pipeline connected in series, and valves located on the third preheating pipeline and / or the generator's coolant pipeline; the fourth preheating module, located between the heat storage device and the hydraulic oil tank, is used to preheat the hydraulic oil in the hydraulic oil tank, including a fourth preheating pipeline, a fourth preheater, the hydraulic oil pipeline connected in series, and valves located on the fourth preheating pipeline and / or the hydraulic oil pipeline; the fifth preheating module, located between the heat storage device and the power battery, is used to preheat the coolant of the power battery, including a fifth preheating pipeline, a fifth preheater, the power battery's coolant pipeline connected in series, and valves located on the fifth preheating pipeline and / or the power battery's coolant pipeline; The operation of the preheating control device includes: If one of the first to fifth preheating modules meets the operating conditions, the preheating module is controlled to operate. When multiple preheating modules in the first to fifth preheating modules meet the operating conditions, a 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, including: when the range extender is in a stopped state, the multiple preheating modules are designated as preheating modules to be operated; when the range extender is in a running state, the preheating module to be operated is determined according to the priority of the multiple preheating modules.

7. A controller, comprising: A module for performing the thermal management method as described in claim 6.

8. 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 6 based on instructions stored in the memory.

9. A computer-readable storage medium having stored thereon computer instructions that, when executed by a processor, implement the thermal management method as described in claim 6.

10. A computer program product having stored computer instructions thereon, which, when executed by a processor, implement the thermal management method as described in claim 6.

11. An engineering machinery equipment, comprising: The thermal management system as described in any one of claims 1 to 5.

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