Vehicle waste heat recovery system, control method, device and electronic equipment

Abstract

The application discloses a vehicle waste heat recovery system, a control method and device and electronic equipment. The system comprises: a first heat collection circuit, which is used for collecting heat generated by an electric drive system in a vehicle to obtain first heat; a second heat collection circuit, which is used for collecting heat of an external environment of the vehicle to obtain second heat; a heat transfer circuit, a first input end of the heat transfer circuit is connected with an output end of the first heat collection circuit to form a first waste heat recovery loop; a second input end of the heat transfer circuit is connected with an output end of the second heat collection circuit to form a second waste heat recovery loop; and a controller, which is used for controlling on-off states of the first heat collection circuit and the second heat collection circuit to recover heat of the electric drive system in the vehicle and / or the external environment. The application solves the technical problem of low efficiency of vehicle waste heat recovery in the related art.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of waste heat recovery, in particular to a vehicle waste heat recovery system, a control method and device, and an electronic device. BACKGROUND

[0002] The waste heat generated by the vehicle during driving is used for energy recovery and reuse, that is, vehicle waste heat recovery. Through the waste heat recovery system, the waste heat can be effectively recovered and converted into electric energy or used to heat the vehicle interior system, thereby improving the energy efficiency and energy saving performance of the vehicle. The waste heat recovery technology can effectively reduce the energy consumption and emissions of the vehicle, and is an environmentally friendly and energy-saving technology.

[0003] At present, the related art mainly researches the use of recovered waste heat, and there is little research on the heat source of vehicle waste heat recovery, that is, the way of heat collection in vehicle waste heat recovery is single, resulting in low efficiency of vehicle waste heat recovery.

[0004] In view of the above problems, no effective solution has been proposed so far. SUMMARY

[0005] The embodiments of the present application provide a vehicle waste heat recovery system, a control method and device, and an electronic device to at least solve the technical problem of low efficiency of vehicle waste heat recovery in the related art.

[0006] According to an aspect of an embodiment of the present application, a vehicle waste heat recovery system is provided, comprising: a first heat collection circuit, the first heat collection circuit being configured to collect heat generated by an electric drive system in the vehicle to obtain first heat; a second heat collection circuit, the second heat collection circuit being configured to collect heat from an external environment in which the vehicle is located to obtain second heat; a heat transfer circuit, a first input end of the heat transfer circuit being connected to an output end of the first heat collection circuit, an output end of the heat transfer circuit being connected to an input end of the first heat collection circuit to form a first waste heat recovery loop; a second input end of the heat transfer circuit being connected to an output end of the second heat collection circuit, an output end of the heat transfer circuit being connected to an input end of the second heat collection circuit to form a second waste heat recovery loop, the heat transfer circuit being configured to use the first heat and / or the second heat for use by the vehicle; and a controller connected to the first heat collection circuit and the second heat collection circuit, the controller being configured to obtain current state information of the vehicle and environmental information of the external environment, determine a target waste heat recovery mode in which the vehicle needs to be controlled to enter based on the current state information and the environmental information, and control on-off states of the first heat collection circuit and the second heat collection circuit based on the target waste heat recovery mode to recover heat from the electric drive system in the vehicle and / or the external environment.

[0007] Optionally, the heat transfer circuit comprises: a first heat exchanger, an input end of the first heat exchanger being connected with the first input end of the heat transfer circuit and the second input end of the heat transfer circuit, for heat exchange with other energy-using devices on the vehicle to supply the first heat and / or the second heat to the other energy-using devices; and a compressor, an input end of the compressor being connected with an output end of the first heat exchanger, and an output end of the compressor being connected with an output end of the heat transfer circuit, for controlling the phase change of the heat-conducting medium in the first waste heat recovery circuit and / or the second waste heat recovery circuit from gas to liquid, so as to control the heat-conducting medium in the first waste heat recovery circuit and / or the second waste heat recovery circuit to be in a circulating flow state.

[0008] Optionally, the first heat collection circuit comprises: a first switch element, a first end of the first switch element being connected with an input end of the first heat collection circuit, and a control end of the first switch element being connected with the controller, the first switch element being used for being turned on or turned off based on the first control signal output by the controller; a second heat exchanger, an input end of the second heat exchanger being connected with a second end of the first switch element, and an output end of the second heat exchanger being connected with an output end of the first heat collection circuit, the second heat exchanger being used for collecting heat generated by the electric drive system; and a second heat collection circuit comprising: a second switch element, a first end of the second switch element being connected with an input end of the second heat collection circuit, and a control end of the second switch element being connected with the controller, the second switch element being used for being turned on or turned off based on the second control signal output by the controller; and a third heat exchanger, an input end of the third heat exchanger being connected with a second end of the second switch element, and an output end of the third heat exchanger being connected with an output end of the second heat collection circuit, the third heat exchanger being used for collecting heat of the external environment.

[0009] According to another aspect of the embodiment of the present application, a vehicle waste heat recovery control method is also provided, which is applied to the vehicle waste heat recovery system described above, and comprises: acquiring current state information of the vehicle and environment information of the external environment in which the vehicle is located; determining a target waste heat recovery mode in which the vehicle needs to be controlled to enter, based on the current state information and the environment information; and controlling on-off states of the first heat collection circuit and the second heat collection circuit based on the target waste heat recovery mode, so as to recover heat of the electric drive system and / or the external environment in the vehicle.

[0010] Optionally, based on the target waste heat recovery mode, the on-off states of the first heat collection circuit and the second heat collection circuit are controlled to recover heat of the electric drive system in the vehicle and / or the external environment, including: in a case where the target waste heat recovery mode is a first waste heat recovery mode, controlling the first heat collection circuit and the second heat collection circuit to be in a conducting state to recover heat of the electric drive system and the external environment; in a case where the target waste heat recovery mode is a second waste heat recovery mode, controlling the first heat collection circuit to be in the conducting state and the second heat collection circuit to be in a disconnected state to recover heat generated by the electric drive system; and in a case where the target waste heat recovery mode is a third waste heat recovery mode, controlling the second heat collection circuit to be in the conducting state and the first heat collection circuit to be in the disconnected state to recover heat of the external environment.

[0011] Optionally, based on the current state information and the environmental information, a target waste heat recovery mode to which the vehicle needs to be controlled to enter is determined, including: based on a first preset judgment condition set, the current state information and the environmental information, an initial waste heat recovery mode is determined; and after the vehicle runs for a preset time length in the initial waste heat recovery mode, based on the initial waste heat recovery mode, the current state information and the environmental information, a target waste heat recovery mode is determined.

[0012] Optionally, the first preset judgment condition set is that there is a heat demand instruction in the current state information and an environmental temperature in the environmental information is greater than a preset environmental temperature; and based on the first preset judgment condition set, the current state information and the environmental information, the initial waste heat recovery mode is determined, including: in a case where the current state information and the environmental information satisfy the first preset judgment condition, the initial waste heat recovery mode is determined to be the first waste heat recovery mode; and in a case where the current state information and the environmental information do not satisfy the first preset condition, the initial waste heat recovery mode is determined to be a non-waste heat recovery mode.

[0013] Optionally, after the vehicle runs for a preset time length in the initial waste heat recovery mode, based on the initial waste heat recovery mode, the current state information and the environmental information, the target waste heat recovery mode is determined, including: in a case where the initial waste heat recovery mode is the first waste heat recovery mode, based on the current state information and the environmental information, an available waste heat level of the second heat exchanger in the first heat collection circuit, a heat absorption priority state of the third heat exchanger in the second heat collection circuit and a compressor rotating speed in the heat transfer circuit are determined, wherein the available waste heat level is used to represent a preset level corresponding to a current available waste heat amount of the second heat exchanger, and the heat absorption priority state is used to represent whether the third heat exchanger has a priority in heat absorption compared with the second heat exchanger; and based on the current state information and the environmental information, the initial waste heat recovery mode is adjusted to obtain the target waste heat recovery mode.

[0014] Optionally, based on the current state information and environmental information, the initial waste heat recovery mode is adjusted to obtain a target waste heat recovery mode, including: acquiring a second preset judgment condition set and a third preset judgment condition set, wherein the available waste heat level corresponding to the third preset judgment condition set is higher than the available waste heat level corresponding to the second preset judgment condition set; if the current state of the vehicle meets the third preset judgment condition set, the target waste heat recovery mode is determined to be the second waste heat recovery mode; if the current state of the vehicle meets the second preset judgment condition set but does not meet the third preset judgment condition set, the target waste heat recovery mode is determined to be the third waste heat recovery mode; if the current state of the vehicle does not meet the second preset judgment condition set and does not meet the third preset judgment condition set, the target waste heat recovery mode is determined to be the first waste heat recovery mode.

[0015] Optionally, obtaining the second preset judgment condition set and the third preset judgment condition set includes: determining the condition set consisting of the available waste heat level being the first waste heat level, the heat absorption priority state being the third heat exchanger absorbing heat preferentially compared to the second heat exchanger, and the compressor speed being less than a preset speed threshold, as the second preset judgment condition set; and determining the condition set consisting of the available waste heat level being the second waste heat level, the heat absorption priority state being the second heat exchanger absorbing heat preferentially compared to the third heat exchanger, and the compressor speed being greater than or equal to a preset speed threshold, as the third preset judgment condition set, wherein the second waste heat level is higher than the first waste heat level.

[0016] Optionally, based on the current status information and environmental information, the available waste heat level of the second heat exchanger in the first heat acquisition line is determined, including: obtaining the saturation temperature corresponding to the input water temperature and refrigerant pressure of the second heat exchanger in the current status information; and determining the available waste heat level based on the difference between the input water temperature and the saturation temperature.

[0017] Optionally, based on the current status information and environmental information, the heat absorption priority state of the third heat exchanger in the second heat acquisition line is determined, including: determining the heat absorption priority state based on the difference between the ambient temperature and the saturation temperature corresponding to the refrigerant pressure in the environmental information.

[0018] According to another aspect of the present invention, a vehicle waste heat recovery control device is also provided, comprising: an acquisition module for acquiring current state information of the vehicle and environmental information of the external environment in which the vehicle is located; a determination module for determining a target waste heat recovery mode that the vehicle needs to be controlled to enter based on the current state information and the environmental information; and a control module for controlling the on / off state of a first heat collection line and a second heat collection line based on the target waste heat recovery mode, so as to recover heat from the electric drive system in the vehicle and / or the external environment.

[0019] According to another aspect of the present invention, an electronic device is also provided, comprising: a memory storing an executable program; and a processor for running the program, wherein the program executes the methods of various embodiments of the present invention during runtime.

[0020] According to another aspect of the present invention, a computer-readable storage medium is also provided, the computer-readable storage medium including a stored executable program, wherein, when the executable program is executed, it controls the device where the computer-readable storage medium is located to perform the methods of various embodiments of the present invention.

[0021] According to another aspect of the present invention, a computer program product is also provided, including a computer program that, when executed by a processor, implements the methods of various embodiments of the present invention.

[0022] According to another aspect of the present invention, a computer program product is also provided, including a non-volatile computer-readable storage medium storing a computer program that, when executed by a processor, implements the methods of various embodiments of the present invention.

[0023] According to another aspect of the present invention, a computer program is also provided, which, when executed by a processor, implements the methods of the various embodiments of the present invention.

[0024] In this embodiment of the invention, a vehicle waste heat recovery system is provided, comprising: a first heat collection line for collecting heat generated by the electric drive system in the vehicle to obtain first heat; a second heat collection line for collecting heat from the external environment in which the vehicle is located to obtain second heat; a heat transfer line, wherein a first input end of the heat transfer line is connected to the output end of the first heat collection line, and the output end of the heat transfer line is connected to the input end of the first heat collection line to form a first waste heat recovery loop; a second input end of the heat transfer line is connected to the output end of the second heat collection line, and the output end of the heat transfer line is connected to the input end of the second heat collection line to form a second waste heat recovery loop, wherein the heat transfer line is used to supply the vehicle with the first heat and / or the second heat; and a controller connected to the first heat collection line and the second heat collection line for acquiring the current state information of the vehicle and the environmental information of the external environment, determining, based on the current state information and the environmental information, a target waste heat recovery mode that the vehicle needs to enter, and controlling the on / off state of the first heat collection line and the second heat collection line based on the target waste heat recovery mode to recover heat from the electric drive system in the vehicle and / or the external environment. In waste heat recovery, it's easy to notice that acquiring the vehicle's current status information and the external environmental information determines the target waste heat recovery mode the vehicle needs to enter. Based on this target mode, the on / off states of the first and second heat collection lines can be controlled. That is, based on the vehicle's operating status and external environmental conditions, the process of recovering heat from the vehicle's electric drive system and the external environment is achieved by controlling the on / off states of the heat collection lines. The vehicle's electric drive system generates heat during operation. By setting the target waste heat recovery mode, it can be determined under what conditions heat recovery is needed. The first heat collection line can be used to collect heat generated by the electric drive system, and the second heat collection line can be used to recover heat from the external environment. By controlling the on / off states of the first and second heat collection lines, heat recovery can be flexibly implemented according to actual conditions. By controlling the on / off states of the heat collection lines based on the target waste heat recovery mode, heat recovery from the vehicle's electric drive system and the external environment can be effectively achieved, improving vehicle energy efficiency and energy saving, thus solving the technical problem of low efficiency in vehicle waste heat recovery in related technologies. Attached Figure Description

[0025] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0026] Figure 1 This is a schematic diagram of a vehicle waste heat recovery system according to an embodiment of the present invention;

[0027] Figure 2 This is a flowchart of a vehicle waste heat recovery control method according to an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram illustrating operation under an optional first waste heat recovery mode according to an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram illustrating operation under an optional second waste heat recovery mode according to an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram illustrating operation under an optional third waste heat recovery mode according to an embodiment of the present invention;

[0031] Figure 6 This is a flowchart illustrating an optional method for determining a target waste heat recovery mode according to an embodiment of the present invention;

[0032] Figure 7 This is a schematic diagram illustrating an optional method for determining the available waste heat level of a second heat exchanger according to an embodiment of the present invention;

[0033] Figure 8 This is a schematic diagram illustrating an optional method for determining the heat absorption priority state of a third heat exchanger according to an embodiment of the present invention;

[0034] Figure 9 This is a schematic diagram of a vehicle waste heat recovery control device according to an embodiment of the present invention. Detailed Implementation

[0035] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0036] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0037] According to an embodiment of the present invention, a vehicle waste heat recovery system is provided. Figure 1 This is a schematic diagram of a vehicle waste heat recovery system according to this application, such as... Figure 1 As shown, the vehicle waste heat recovery system includes: a first heat collection line 102, a second heat collection line 104, a heat transfer line 106, and a controller 108.

[0038] The first heat collection line 102 is used to collect the heat generated by the electric drive system in the vehicle to obtain the first heat.

[0039] The vehicles mentioned above can refer to new energy vehicles that are capable of waste heat recovery and have an electric drive system. The vehicles can recover and reuse the heat energy generated during vehicle operation. The specific type of vehicle can be determined according to actual needs and is not limited here.

[0040] The aforementioned vehicle waste heat recovery system refers to a system on a vehicle that recovers heat to achieve energy reuse and energy conservation and emission reduction. Through the vehicle waste heat recovery system, the vehicle can convert waste heat into electricity or other forms of energy, improve fuel efficiency, reduce fuel consumption and emissions, and reduce the impact on the environment.

[0041] The aforementioned electric drive system refers to a system on a vehicle consisting of an electric motor, an electronic controller, and a battery, used to drive the vehicle forward or backward. The electric drive system can replace the traditional internal combustion engine system, providing higher efficiency and lower emissions, while also providing better power output and driving experience. The electric drive system can be used in electric vehicles or hybrid vehicles.

[0042] The aforementioned first heat collection line can refer to a line used to collect heat generated by the electric drive system in a vehicle. The first heat collection line can be composed of circuits, pipes, etc. The heat collection end of the first heat collection line can be set up close to the vehicle's electric drive system. The specific structure of the first heat collection line can be determined according to actual needs and is not limited here.

[0043] The first heat mentioned above can refer to the heat actually collected by the first heat collection circuit; however, there is no limitation on the first heat here.

[0044] In one optional embodiment, a first heat collection line can be used to collect heat generated by the electric drive system in the vehicle. The electric drive system can refer to components such as electric motors and batteries in the car. The electric drive system generates a large amount of heat during operation. In order to make full use of the heat generated by the electric drive system and facilitate its heat dissipation and cooling, the vehicle waste heat recovery system can collect the heat generated by the electric drive system through the first heat collection line. The first heat collection line can absorb the heat generated by the electric drive system through a radiator or other heat exchange device to obtain the first heat. In the waste heat recovery system, the first heat can be used to heat the air inside the vehicle, heat the seats, or the heating system, thereby reducing the vehicle's energy consumption and improving fuel efficiency. The first heat collection line can effectively collect the heat generated by the electric drive system in the vehicle, providing an additional energy source for the vehicle, thereby improving the overall energy efficiency and energy-saving performance of the vehicle.

[0045] The second heat collection line 104 is used to collect heat from the external environment where the vehicle is located, and obtain the second heat.

[0046] The aforementioned second heat collection line can refer to a line used to collect heat from the external environment where the vehicle is located. The second heat collection line can be composed of circuits, pipes, etc. The heat collection end of the second heat collection line can be set on the outside of the vehicle, such as the front, rear, or top of the vehicle. It can be set according to actual needs. The specific structure of the second heat collection line can be determined according to actual needs and is not limited here.

[0047] The aforementioned second heat source can refer to the heat actually collected by the second heat collection circuit; however, the definition of the second heat source is not limited here.

[0048] In one optional embodiment, a second heat harvesting line can be used to collect heat from the external environment surrounding the vehicle and convert this heat into usable energy, thus obtaining a second heat source. During vehicle operation, the environment around the vehicle generates heat, such as from solar radiation, engine emissions, and friction during braking. The second heat harvesting line absorbs the heat from the external environment and transfers it to a heat energy conversion device, thereby achieving energy conversion and recycling. The second heat harvesting line can be composed of components such as heat exchangers and pipes. The heat exchanger is responsible for transferring heat between the external environment and the system interior, while the pipes are used to transport the heat medium. Through the synergistic effect of these components, the second heat harvesting line can effectively convert the heat from the external environment into usable energy, providing additional power support for the vehicle. By effectively utilizing the heat from the external environment, the second heat harvesting line achieves energy recovery and reuse, improving the vehicle's energy efficiency and reducing its environmental impact.

[0049] The heat transfer line 106 has a first input end connected to the output end of a first heat collection line, and an output end connected to the input end of the first heat collection line, to form a first waste heat recovery loop; the second input end of the heat transfer line is connected to the output end of a second heat collection line, and an output end connected to the input end of the second heat collection line, to form a second waste heat recovery loop. The heat transfer line is used to utilize the first heat and / or the second heat for vehicle use.

[0050] The aforementioned heat transfer line can refer to the first heat and / or second heat collected by the first heat collection line and / or the second heat collection line for use by the vehicle. The use of waste heat by the vehicle can include vehicle air conditioning heating, vehicle seat heating, vehicle steering wheel heating, etc. The use of waste heat by the vehicle can also include converting the first heat and / or the second heat into electrical energy for use or storage. The method of using waste heat by the vehicle can be determined according to actual needs and is not limited here.

[0051] In one optional embodiment, the heat transfer line can transfer heat energy from the heat collection line to the waste heat recovery loop. The heat transfer line can have two input terminals and two output terminals, which are respectively connected to the first heat collection line and the second heat collection line to form the first waste heat recovery loop and the second waste heat recovery loop. In the first waste heat recovery loop, the first input terminal of the heat transfer line is connected to the output terminal of the first heat collection line, transferring the heat energy collected from the first heat collection line to the heat transfer line, and then connecting the output terminal of the heat transfer line to the input terminal of the first heat collection line to realize the recovery and reuse of heat energy. In the second waste heat recovery loop, the second input terminal of the heat transfer line is connected to the output terminal of the second heat collection line, transferring heat energy to the heat transfer line, and then connecting the output terminal of the heat transfer line to the input terminal of the second heat collection line to realize the recovery and reuse of heat energy in the second waste heat recovery loop. The heat transfer line plays the role of transferring heat energy in the vehicle waste heat recovery system, converting waste heat into reusable energy, improving energy utilization efficiency and vehicle fuel economy.

[0052] The controller 108 is connected to the first heat collection line and the second heat collection line. It is used to acquire the current status information of the vehicle and the environmental information of the external environment. Based on the current status information and the environmental information, it determines the target waste heat recovery mode that the vehicle needs to enter. Based on the target waste heat recovery mode, it controls the on / off state of the first heat collection line and the second heat collection line to recover heat from the electric drive system in the vehicle and / or the external environment.

[0053] The controllers mentioned above can be microcontrollers, programmable logic controllers, and field-programmable gate arrays, etc. The specific type of controller can be determined according to actual needs, and is not limited here.

[0054] The aforementioned current status information can refer to the vehicle's current / real-time status information regarding waste heat recovery control and logic judgment. The current status information can include information that can be directly collected by sensors and other acquisition devices, as well as user-defined parameter information. The current status information can include, but is not limited to, the energy demand information of the vehicle or user, the temperature and running time of the battery and / or motor in the vehicle's electric drive system, the temperature rise curve of the battery and / or motor, and other information. The current status information can also be determined according to actual needs, which is not limited here.

[0055] The aforementioned environmental information can refer to the external environment information where the vehicle needs to perform waste heat recovery, including but not limited to information such as temperature, humidity, and atmospheric pressure. The environmental information can also be determined according to actual needs, and is not limited here.

[0056] The aforementioned target waste heat recovery mode can refer to a waste heat recovery mode that is determined based on current state information and environmental information and requires vehicle control. The target waste heat recovery mode can put the vehicle waste heat recovery system in different working states to recover heat from the electric drive system in the vehicle and / or the external environment. The target waste heat recovery mode can be dynamically determined according to the actual situation. Here, no limitation is made on the target waste heat recovery mode.

[0057] In one optional embodiment, in the vehicle waste heat recovery system, the controller can be connected to a first heat collection line and a second heat collection line to acquire the vehicle's current status information and the environmental information of the external environment. Based on the current status information and environmental information, the controller determines the target waste heat recovery mode that the vehicle needs to enter, and controls the on / off state of the first and second heat collection lines according to the target waste heat recovery mode. By monitoring the vehicle's operating status, battery temperature, external temperature, user heat demand, and other information, the controller can determine whether the vehicle currently needs waste heat recovery. If it is determined that waste heat recovery is needed, the controller will control the on / off state of the first and second heat collection lines according to the preset recovery mode to achieve the purpose of recovering heat from the vehicle's electric drive system and / or the external environment. Through the intelligent adjustment of the controller, the vehicle can achieve good waste heat recovery effect, effectively improve energy utilization, and reduce energy waste. The controller can also protect the vehicle system from overheating, extend the vehicle's service life, and improve the overall vehicle performance and reliability.

[0058] In this embodiment of the invention, a vehicle waste heat recovery system is provided, comprising: a first heat collection line for collecting heat generated by the electric drive system in the vehicle to obtain first heat; a second heat collection line for collecting heat from the external environment in which the vehicle is located to obtain second heat; a heat transfer line, wherein a first input end of the heat transfer line is connected to the output end of the first heat collection line, and the output end of the heat transfer line is connected to the input end of the first heat collection line to form a first waste heat recovery loop; a second input end of the heat transfer line is connected to the output end of the second heat collection line, and the output end of the heat transfer line is connected to the input end of the second heat collection line to form a second waste heat recovery loop, wherein the heat transfer line is used to supply the vehicle with the first heat and / or the second heat; and a controller connected to the first heat collection line and the second heat collection line for acquiring the current state information of the vehicle and the environmental information of the external environment, determining, based on the current state information and the environmental information, a target waste heat recovery mode that the vehicle needs to enter, and controlling the on / off state of the first heat collection line and the second heat collection line based on the target waste heat recovery mode to recover heat from the electric drive system in the vehicle and / or the external environment. In waste heat recovery, it's easy to notice that acquiring the vehicle's current status information and the external environmental information determines the target waste heat recovery mode the vehicle needs to enter. Based on this target mode, the on / off states of the first and second heat collection lines can be controlled. That is, based on the vehicle's operating status and external environmental conditions, the process of recovering heat from the vehicle's electric drive system and the external environment is achieved by controlling the on / off states of the heat collection lines. The vehicle's electric drive system generates heat during operation. By setting the target waste heat recovery mode, it can be determined under what conditions heat recovery is needed. The first heat collection line can be used to collect heat generated by the electric drive system, and the second heat collection line can be used to recover heat from the external environment. By controlling the on / off states of the first and second heat collection lines, heat recovery can be flexibly implemented according to actual conditions. By controlling the on / off states of the heat collection lines based on the target waste heat recovery mode, heat recovery from the vehicle's electric drive system and the external environment can be effectively achieved, improving vehicle energy efficiency and energy saving, thus solving the technical problem of low efficiency in vehicle waste heat recovery in related technologies.

[0059] Optionally, the heat transfer circuit includes: a first heat exchanger, the input end of which is connected to a first input end and a second input end of the heat transfer circuit, for exchanging heat with other energy-consuming devices on the vehicle to utilize first heat and / or second heat for use by other energy-consuming devices; and a compressor, the input end of which is connected to the output end of the first heat exchanger, and the output end of which is connected to the output end of the heat transfer circuit, for controlling the heat transfer medium in the first waste heat recovery circuit and / or the second waste heat recovery circuit to change from a gaseous state to a liquid state, so as to control the heat transfer medium in the first waste heat recovery circuit and / or the second waste heat recovery circuit to be in a circulating flow state.

[0060] The aforementioned other energy-consuming equipment can refer to equipment on the vehicle that can use the collected waste heat, including but not limited to the vehicle's air conditioning system, vehicle seat heating equipment, vehicle steering wheel heating equipment, etc. Other energy-consuming equipment can be determined according to actual needs, and is not limited here.

[0061] The aforementioned heat-conducting medium can refer to the heat-conducting medium in the first waste heat recovery loop and the second waste heat recovery loop. The heat-conducting medium can flow in the pipeline in the form of gas or liquid. When the heat-conducting medium changes from liquid to gas, it can absorb heat and realize heat collection; when the heat-conducting medium changes from gas to liquid, it can release heat and realize the heat release process. Through the above process, heat can be transferred. The heat-conducting medium can be water, coolant, etc. The specific type of heat-conducting medium can be determined according to actual needs and is not limited here.

[0062] In one optional embodiment, the heat transfer circuit may include a first heat exchanger, the input end of which is connected to a first input end and a second input end of the heat transfer circuit for heat exchange with other energy-consuming devices on the vehicle, thereby utilizing first heat and / or second heat for use by other devices; the compressor input end is connected to the output end of the first heat exchanger, and the output end is connected to the output end of the heat transfer circuit. The compressor can control the heat transfer medium to change from a gaseous state to a liquid state to control the circulation flow state of the heat transfer medium in the first heat recovery circuit and / or the second waste heat recovery circuit; when the vehicle's waste heat recovery system is running, the heat transfer medium transfers the first heat and / or second heat to other energy-consuming devices through the first heat exchanger. The compressor's role is to ensure that the heat transfer medium maintains a circulating flow state in the circuit to ensure the smooth operation of the system. In this way, the vehicle's waste heat recovery system can make full use of the waste heat generated by the electric drive system, improve energy utilization efficiency, reduce energy waste, and thus reduce the vehicle's energy consumption and emissions.

[0063] Optionally, the first heat acquisition circuit includes: a first switching element, the first end of which is connected to the input end of the first heat acquisition circuit, and the control end of which is connected to a controller; the first switching element is used to turn on or off based on a first control signal output by the controller; a second heat exchanger, the input end of which is connected to the second end of the first switching element, and the output end of which is connected to the output end of the first heat acquisition circuit; the second heat exchanger is used to acquire heat generated by the electric drive system; the second heat acquisition circuit includes: a second switching element, the first end of which is connected to the input end of the second heat acquisition circuit, and the control end of which is connected to the controller; the second switching element is used to turn on or off based on a second control signal output by the controller; and a third heat exchanger, the input end of which is connected to the second end of the second switching element, and the output end of which is connected to the output end of the second heat acquisition circuit; the third heat exchanger is used to acquire heat from the external environment.

[0064] The first switching element mentioned above can be used to control the on / off state of the first heat collection line, so as to control the on / off state of the first waste heat recovery circuit. The first switching element can be a switch, switching transistor, relay, etc. The first switching element can be determined according to actual needs, and no limitation is made here.

[0065] The aforementioned second switching element can be used to control the on / off state of the second heat collection line, thereby controlling the on / off state of the second waste heat recovery circuit. The second switching element can be a switch, switching transistor, relay, etc. The second switching element can be determined according to actual needs, and no limitation is made here.

[0066] In one optional embodiment, in the vehicle's waste heat recovery system, a first heat harvesting line can be used to harvest heat generated by the electric drive system and convert it into usable energy. The first terminal of a first switching element in the first heat harvesting line is connected to the input terminal of the first heat harvesting line, and the control terminal is connected to a controller. The first switching element can be turned on or off based on a first control signal output by the controller, thereby controlling the operating state of the first heat harvesting line. The input terminal of a second heat exchanger is connected to the second terminal of the first switching element, and the output terminal is connected to the output terminal of the first heat harvesting line. The second heat exchanger is responsible for transferring the harvested heat generated by the electric drive system to the heat harvesting line for subsequent energy conversion and utilization. Through the synergistic effect of the first switching element and the second heat exchanger, the first heat harvesting line can effectively harvest and convert the waste heat generated by the electric drive system, thereby improving energy utilization efficiency, reducing energy waste, and achieving sustainable energy utilization.

[0067] The second heat harvesting circuit collects heat from the external environment through a second heat exchanger. The first end of the second switching element in the second heat harvesting circuit is connected to the input end of the circuit, and the second end is connected to the input end of the third heat exchanger. The controller is connected to the second switching element via a control terminal and can control the on / off state of the second switching element based on a second control signal output by the controller. When the second switching element is on, heat from the external environment can be collected through the third heat exchanger. The output end of the third heat exchanger is connected to the output end of the second heat harvesting circuit, transferring the collected heat to the vehicle's waste heat recovery system, which then converts it into usable energy for the vehicle. In this way, the second heat harvesting circuit can effectively utilize heat from the external environment, improve the vehicle's energy efficiency, and reduce energy waste. The controller can control the operating state of the second switching element according to the vehicle's actual operating conditions and environmental conditions, making the system more intelligent and efficient.

[0068] According to another aspect of the present invention, a vehicle waste heat recovery control method is also provided, which is applied to the above-described vehicle waste heat recovery system. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0069] Figure 2 This is a flowchart of a vehicle waste heat recovery control method according to an embodiment of the present invention, such as... Figure 2 As shown, the method includes the following steps:

[0070] Step S202: Obtain the current status information of the vehicle and the environmental information of the external environment in which the vehicle is located.

[0071] In one optional embodiment, in the field of vehicle waste heat recovery, acquiring the vehicle's current status information can include information such as vehicle speed, acceleration, steering angle, engine speed, and battery charge. This current status information can be obtained through built-in sensors or onboard systems. By acquiring this information, the vehicle's current operating status can be understood, providing basic data for the design and control of the waste heat recovery system. Acquiring environmental information about the vehicle's external environment can include information such as ambient temperature, humidity, air pressure, and road conditions. This environmental information can be obtained through onboard sensors or external weather stations. This information provides basic data for the design and control of the waste heat recovery system, helping the system better adapt to different external environments. By acquiring both the vehicle's current status information and the environmental information of the external environment, more accurate data and information can be provided for the design and control of the waste heat recovery system, thereby improving system efficiency and performance and achieving more effective energy recovery and utilization.

[0072] Step S204: Based on the current status information and environmental information, determine the target waste heat recovery mode that the vehicle needs to enter.

[0073] In one optional embodiment, a target waste heat recovery mode that the vehicle needs to enter can be determined. The vehicle's current status and environmental information can be monitored, and then a suitable waste heat recovery mode can be selected based on these information to maximize energy efficiency. Regarding the electric drive system, vehicles are typically equipped with electric motors or hybrid systems. In this case, the electric drive system generates a certain amount of waste heat, such as the heat generated by the motor during operation. To maximize the utilization of the waste heat generated by the electric drive system, different waste heat recovery modes can be adopted. For example, the waste heat generated by the electric drive system can be used to heat the vehicle's interior space, improving passenger comfort. By monitoring the vehicle's current status and environmental information, determining the target waste heat recovery mode that the vehicle needs to enter can significantly improve the vehicle's energy efficiency and performance. Selecting a suitable waste heat recovery mode for both the electric drive system and the external environment can effectively utilize waste heat resources, improving the vehicle's energy efficiency and environmental performance.

[0074] Step S206: Based on the target waste heat recovery mode, control the on / off state of the first heat collection line and the second heat collection line to recover heat from the electric drive system in the vehicle and / or the external environment.

[0075] In one optional embodiment, the on / off state of the first and second heat collection lines can be controlled based on a target waste heat recovery mode. That is, according to the vehicle's operating status and external environmental conditions, the process of recovering heat from the vehicle's electric drive system and the external environment is achieved by controlling the on / off state of the heat collection lines. The vehicle's electric drive system generates a certain amount of heat during operation. By setting a target waste heat recovery mode, it can be determined under what circumstances heat recovery is needed. The first heat collection line can be used to collect heat generated by the electric drive system, and the second heat collection line can be used to recover heat from the external environment. By controlling the on / off state of the first and second heat collection lines, heat recovery can be flexibly carried out according to actual conditions. By controlling the on / off state of the heat collection lines based on the target waste heat recovery mode, heat recovery from the vehicle's electric drive system and the external environment can be effectively achieved, improving the vehicle's energy efficiency and energy-saving effect.

[0076] Optionally, based on the target waste heat recovery mode, the on / off state of the first heat collection line and the second heat collection line is controlled to recover heat from the electric drive system and / or the external environment in the vehicle. This includes: when the target waste heat recovery mode is the first waste heat recovery mode, controlling both the first and second heat collection lines to be in a conducting state to recover heat from the electric drive system and the external environment; when the target waste heat recovery mode is the second waste heat recovery mode, controlling the first heat collection line to be in a conducting state and the second heat collection line to be in a disconnected state to recover heat generated by the electric drive system; and when the target waste heat recovery mode is the third waste heat recovery mode, controlling the second heat collection line to be in a conducting state and the first heat collection line to be in a disconnected state to recover heat from the external environment.

[0077] Figure 3 This is a schematic diagram illustrating operation under an optional first waste heat recovery mode according to an embodiment of the present invention, as shown below. Figure 3 As shown, the vehicle waste heat recovery system includes: a first heat exchanger 1002, a compressor 1004, a second heat exchanger 1006, a first switching element 1008, a third heat exchanger 1010, and a second switching element 1012. In the first waste heat recovery mode, both the first and second switching elements are in the closed state, that is, the first and second heat collection lines are both in the conducting state to recover heat from the electric drive system and the external environment.

[0078] Figure 4 This is a schematic diagram illustrating operation under an optional second waste heat recovery mode according to an embodiment of the present invention, as shown below. Figure 4 As shown, the vehicle waste heat recovery system includes: a first heat exchanger 1002, a compressor 1004, a second heat exchanger 1006, a first switching element 1008, a third heat exchanger 1010, and a second switching element 1012. In the second waste heat recovery mode, the first heat collection line is controlled to be in a conducting state and the second heat collection line is controlled to be in a disconnected state, so as to recover the heat generated by the electric drive system.

[0079] Figure 5 This is a schematic diagram illustrating operation under an optional third waste heat recovery mode according to an embodiment of the present invention, as shown below. Figure 3 As shown, the vehicle waste heat recovery system includes: a first heat exchanger 1002, a compressor 1004, a second heat exchanger 1006, a first switching element 1008, a third heat exchanger 1010, and a second switching element 1012. In the third waste heat recovery mode, the second heat collection line is controlled to be in a conducting state, and the first heat collection line is in a disconnected state, so as to recover heat from the external environment.

[0080] In one optional embodiment, the conduction state of the heat collection lines can be controlled under different target waste heat recovery modes to achieve heat recovery from the electric drive system and the external environment. When the target waste heat recovery mode is the first waste heat recovery mode, by controlling both the first and second heat collection lines to be in the conduction state, heat from the electric drive system and the external environment can be recovered simultaneously, improving energy utilization efficiency. When the target waste heat recovery mode is the second waste heat recovery mode, by controlling the first heat collection line to be in the conduction state and the second heat collection line to be in the off state, heat generated by the electric drive system can be recovered, thereby reducing energy waste. When the target waste heat recovery mode is the third waste heat recovery mode, by controlling the second heat collection line to be in the conduction state and the first heat collection line to be in the off state, heat from the external environment can be recovered, thereby improving the system's thermal energy utilization efficiency. By controlling the conduction state of the heat collection lines according to different target waste heat recovery modes, heat generated by the vehicle system and heat from the external environment can be effectively recovered, improving energy utilization efficiency, reducing energy waste, and achieving sustainable energy utilization.

[0081] Optionally, based on the current state information and environmental information, the target waste heat recovery mode that the vehicle needs to enter is determined, including: determining the initial waste heat recovery mode based on the first preset judgment condition set, the current state information and environmental information; and determining the target waste heat recovery mode based on the initial waste heat recovery mode, the current state information and environmental information after the vehicle has been running in the initial waste heat recovery mode for a preset period of time.

[0082] The aforementioned first preset judgment condition set can refer to a pre-set set of conditions for determining whether a vehicle enters the initial waste heat recovery mode. The first preset judgment condition set can be determined according to actual needs, and there is no limitation on the first preset judgment condition set here.

[0083] The aforementioned initial waste heat recovery mode can refer to the waste heat recovery mode that requires controlling the vehicle to enter first. The initial waste heat recovery mode can be determined as the first waste heat recovery mode, the second waste heat recovery mode, and the third waste heat recovery mode, etc. Here, the initial waste heat recovery mode is not limited.

[0084] The aforementioned preset duration can refer to the duration during which the vehicle needs to be in the initial waste heat recovery mode. After the vehicle is in the initial waste heat recovery mode, the target waste heat recovery mode of the vehicle can be further determined. The preset duration can be three minutes, ten minutes, etc. There is no limitation on the preset duration here.

[0085] In one optional embodiment, an initial waste heat recovery mode can be determined based on a first preset judgment condition set, current state information, and environmental information. A suitable initial waste heat recovery mode can be selected based on the first preset judgment condition set, the vehicle's current state, and the surrounding environment. After the vehicle operates in the initial waste heat recovery mode for a preset period, a target waste heat recovery mode can be determined based on the initial waste heat recovery mode, current state information, and environmental information. After operating in the initial mode for a period, the waste heat recovery mode may need to be adjusted to better adapt to actual operating conditions, improving system efficiency and performance, depending on changes in the vehicle's current state and the surrounding environment. Through these steps, the vehicle can dynamically adjust the waste heat recovery mode according to actual conditions to maximize the utilization of waste heat resources and improve fuel efficiency, thereby achieving energy conservation and emission reduction. This allows for optimized decisions based on different operating conditions and environmental conditions, providing better support for vehicle energy management.

[0086] Optionally, the first preset judgment condition set is that there is a heat demand command in the current state information and the ambient temperature in the environmental information is greater than the preset ambient temperature; based on the first preset judgment condition set, the current state information and the environmental information, the initial waste heat recovery mode is determined, including: if the current state information and the environmental information meet the first preset judgment condition, the initial waste heat recovery mode is determined to be the first waste heat recovery mode; if the current state information and the environmental information do not meet the first preset condition, the initial waste heat recovery mode is determined to be the non-waste heat recovery mode.

[0087] The aforementioned heat demand command can refer to a command generated when the vehicle or user has a heat usage need, such as the user turning on the air conditioner's heating mode, or the vehicle automatically entering the cabin preheating and insulation function. The heat demand command can be determined according to actual needs, and is not limited here.

[0088] The aforementioned preset ambient temperature can refer to a pre-set temperature value. When the ambient temperature is higher than the preset ambient temperature, the vehicle can enter the waste heat recovery mode when it has heating needs and the ambient temperature and the initial conditions of the thermal management system are met. The preset ambient temperature can be zero degrees Celsius, etc. Since the vehicle's waste heat recovery mode requires the operation of equipment such as compressors, which consumes energy, controlling the vehicle to enter the waste heat recovery mode when the ambient temperature is higher than the preset ambient temperature can save energy overall. The preset ambient temperature can be determined based on the energy that the vehicle can recover when it enters the waste heat recovery mode and the energy consumed by the waste heat recovery system. The preset ambient temperature can be determined according to actual needs and is not limited here.

[0089] The aforementioned non-waste heat recovery mode can refer to controlling the vehicle not to enter the waste heat recovery mode when the vehicle or user has no heat demand, or when the ambient temperature is less than or equal to the preset ambient temperature, or when the initial conditions of the thermal management system are not met.

[0090] In one optional embodiment, the initial waste heat recovery mode can be determined based on the current state information and environmental information. This determination can be made according to a first preset set of judgment conditions. If the current state information contains a heat demand command and the environmental temperature is higher than a preset environmental temperature, the preliminary conditions of the thermal management system are met, indicating that recoverable waste heat exists in the environment. In this case, the system can determine the initial waste heat recovery mode as the first waste heat recovery mode, i.e., activate the waste heat recovery system to recover the waste heat generated by the vehicle. If the current state information and environmental information do not meet the first preset judgment conditions, i.e., there is no heat demand command or the environmental temperature is not higher than the preset environmental temperature, or the preliminary conditions of the thermal management system are not met, then the system will determine the initial waste heat recovery mode as a non-waste heat recovery mode, i.e., the waste heat recovery system will not be activated. Through the above steps, the system can determine whether to activate the waste heat recovery system based on the actual situation to recover waste heat, improve energy utilization efficiency, and reduce energy consumption and environmental pollution.

[0091] Specifically, this application determines the initial waste heat recovery mode of the vehicle as the first waste heat recovery mode based on the first preset judgment condition set. After the vehicle operates in the first waste heat recovery mode for a preset time, it is then determined whether to switch / adjust to other waste heat recovery modes. Since the first heat collection line and the second heat collection line are both in the conducting state in the first waste heat recovery mode, the preset operating time can realize the preheating of the entire vehicle waste heat recovery system and make the heat transfer medium flow fully in the entire vehicle waste heat recovery system in advance, which facilitates the efficiency of the vehicle switching between various waste heat recovery modes.

[0092] Optionally, after the vehicle has been operating in the initial waste heat recovery mode for a preset period of time, a target waste heat recovery mode is determined based on the initial waste heat recovery mode, current status information, and environmental information. This includes: if the initial waste heat recovery mode is the first waste heat recovery mode, determining the available waste heat level of the second heat exchanger in the first heat collection line, the heat absorption priority state of the third heat exchanger in the second heat collection line, and the compressor speed in the heat transfer line based on the current status information and environmental information. The available waste heat level is used to represent the preset level corresponding to the current available waste heat of the second heat exchanger, and the heat absorption priority state is used to represent whether the third heat exchanger absorbs heat preferentially compared to the second heat exchanger. Based on the current status information and environmental information, the initial waste heat recovery mode is adjusted to obtain the target waste heat recovery mode.

[0093] The aforementioned available waste heat level can be used to represent the preset level corresponding to the current available waste heat of the second heat exchanger. The higher the available waste heat level, the greater the current available waste heat of the second heat exchanger, that is, the more heat can be collected from the electric drive system, or the higher the temperature of the electric drive system, requiring cooling of the electric drive system.

[0094] In an optional embodiment, when the initial waste heat recovery mode is the first waste heat recovery mode, the available waste heat level of the second heat exchanger in the first heat collection line, the heat absorption priority state of the third heat exchanger in the second heat collection line, and the compressor speed in the heat transfer line can be determined based on the current status information and environmental information. The available waste heat level of the second heat exchanger can be determined, representing the preset level corresponding to the current available waste heat of the second heat exchanger. By monitoring the operating status and heat transfer of the second heat exchanger, its available waste heat level can be determined for reference in subsequent judgments. The heat absorption priority of the third heat exchanger can be determined. The status indicates whether the third heat exchanger takes priority in absorbing heat compared to the second heat exchanger. By comparing the working efficiency and performance of the second and third heat exchangers, it can be determined which heat collection line should take priority in absorbing heat to ensure that the thermal energy utilization efficiency of the entire system is maximized. The compressor speed in the heat transfer line can be determined. By measuring the compressor speed, the heat transfer speed and efficiency can be judged to meet the current thermal energy demand of the vehicle and environmental conditions. Based on the current status information and environmental information, the initial waste heat recovery mode can be adjusted to obtain the target waste heat recovery mode, thereby achieving effective recovery and utilization of vehicle waste heat and improving vehicle energy efficiency and performance.

[0095] Optionally, based on the current state information and environmental information, the initial waste heat recovery mode is adjusted to obtain a target waste heat recovery mode, including: acquiring a second preset judgment condition set and a third preset judgment condition set, wherein the available waste heat level corresponding to the third preset judgment condition set is higher than the available waste heat level corresponding to the second preset judgment condition set; if the current state of the vehicle meets the third preset judgment condition set, the target waste heat recovery mode is determined to be the second waste heat recovery mode; if the current state of the vehicle meets the second preset judgment condition set but does not meet the third preset judgment condition set, the target waste heat recovery mode is determined to be the third waste heat recovery mode; if the current state of the vehicle does not meet the second preset judgment condition set and does not meet the third preset judgment condition set, the target waste heat recovery mode is determined to be the first waste heat recovery mode.

[0096] In one optional embodiment, the second preset judgment condition set and the third preset judgment condition set can refer to setting different condition sets based on factors such as the current state of the vehicle and environmental conditions to determine whether the vehicle can perform waste heat recovery. The available waste heat level corresponding to the third preset judgment condition set is higher than the available waste heat level corresponding to the second preset judgment condition set. That is, the third preset condition set is suitable for situations with higher temperatures in the electric drive system or can collect more heat from the electric drive system.

[0097] If the vehicle's current state meets the third preset judgment condition set, regardless of whether the second preset judgment condition set is met, the target waste heat recovery mode can be determined as the second waste heat recovery mode. This allows the vehicle to recover heat generated by the electric drive system more efficiently, thus selecting a more efficient waste heat recovery mode. If the vehicle's current state meets the second preset judgment condition set but not the third preset judgment condition set, the target waste heat recovery mode can be determined as the third waste heat recovery mode, which recovers heat from the external environment. If the vehicle's current state does not meet either the second or third preset judgment condition set, the target waste heat recovery mode is determined as the first waste heat recovery mode, meaning the vehicle continues to operate in the first waste heat recovery mode. Through these steps, the most suitable waste heat recovery mode can be determined based on the vehicle's actual situation and environmental conditions to maximize energy utilization efficiency and minimize environmental impact.

[0098] Figure 6 This is a flowchart illustrating an optional method for determining a target waste heat recovery mode according to an embodiment of the present invention, such as... Figure 6 As shown, it includes:

[0099] Step S602: Obtain the current status information of the vehicle and the environmental information of the external environment in which the vehicle is located.

[0100] Step S604: Based on the first preset judgment condition set, current state information and environmental information, determine the initial waste heat recovery mode. If the current state information and environmental information do not meet the first preset condition, determine the initial waste heat recovery mode as a non-waste heat recovery mode. If the current state information and environmental information meet the first preset judgment condition, determine the initial waste heat recovery mode as the first waste heat recovery mode.

[0101] Step S606: If the current state of the vehicle does not meet the second preset judgment condition set and does not meet the third preset judgment condition set, the target waste heat recovery mode is determined to be the first waste heat recovery mode; if the current state of the vehicle meets the third preset judgment condition set, the target waste heat recovery mode is determined to be the second waste heat recovery mode; if the current state of the vehicle meets the second preset judgment condition set but does not meet the third preset judgment condition set, the target waste heat recovery mode is determined to be the third waste heat recovery mode.

[0102] Step S608: Based on the target waste heat recovery mode, control the on / off state of the first heat collection line and the second heat collection line to recover heat from the electric drive system in the vehicle and / or the external environment.

[0103] Optionally, obtaining the second preset judgment condition set and the third preset judgment condition set includes: determining the condition set consisting of the available waste heat level being the first waste heat level, the heat absorption priority state being the third heat exchanger absorbing heat preferentially compared to the second heat exchanger, and the compressor speed being less than a preset speed threshold, as the second preset judgment condition set; and determining the condition set consisting of the available waste heat level being the second waste heat level, the heat absorption priority state being the second heat exchanger absorbing heat preferentially compared to the third heat exchanger, and the compressor speed being greater than or equal to a preset speed threshold, as the third preset judgment condition set, wherein the second waste heat level is higher than the first waste heat level.

[0104] In one optional embodiment, a preset judgment condition set can be determined based on different condition sets. Specifically, when the available waste heat level in the vehicle system is the first waste heat level, and the heat absorption priority state is that the third heat exchanger absorbs heat preferentially compared to the second heat exchanger, and the compressor speed is less than a preset speed threshold, these conditions constitute the second preset judgment condition set. When the available waste heat level is the second waste heat level, the heat absorption priority state is that the second heat exchanger absorbs heat preferentially compared to the third heat exchanger, and the compressor speed is greater than or equal to a preset speed threshold, these conditions constitute the third preset judgment condition set, where the second waste heat level is higher than the first waste heat level. Through the combination and judgment of the above conditions, the working state and priority of the vehicle system in the waste heat recovery process can be effectively determined, thereby achieving more efficient energy utilization and system operation.

[0105] Optionally, based on the current status information and environmental information, the available waste heat level of the second heat exchanger in the first heat acquisition line is determined, including: obtaining the saturation temperature corresponding to the input water temperature and refrigerant pressure of the second heat exchanger in the current status information; and determining the available waste heat level based on the difference between the input water temperature and the saturation temperature.

[0106] In one optional embodiment, the saturation temperature corresponding to the input water temperature and refrigerant pressure of the second heat exchanger can be obtained. This helps determine the internal operating state of the heat exchanger, thereby better utilizing waste heat. The input water temperature refers to the temperature of the cooling water entering the heat exchanger, and the saturation temperature corresponding to the refrigerant pressure refers to the temperature of the refrigerant at its saturation state under a specific pressure. This temperature can be obtained in real time using sensors and monitoring equipment. The usable waste heat level is determined based on the difference between the input water temperature and the saturation temperature. The usable waste heat level refers to the level at which waste heat can be converted into usable heat. The greater the difference between the input water temperature and the saturation temperature, the higher the operating efficiency of the heat exchanger and the relatively higher the available waste heat level. By determining this difference, the performance of the heat exchanger can be evaluated, and the operation of the waste heat recovery system can be optimized to improve energy utilization efficiency. Obtaining the saturation temperature corresponding to the input water temperature and refrigerant pressure of the second heat exchanger in the current status information, and determining the available waste heat level based on the difference between the input water temperature and the saturation temperature, is an important step in optimizing the performance of the vehicle waste heat recovery system. By monitoring and analyzing the above data in real time, waste heat resources can be effectively utilized, and the energy utilization efficiency of the vehicle can be improved.

[0107] Figure 7 This is a schematic diagram illustrating an optional method for determining the available waste heat level of a second heat exchanger according to an embodiment of the present invention, such as... Figure 7 As shown, the horizontal axis of the image can represent the difference between the input water temperature and the saturation temperature, and the vertical axis can represent the available waste heat level. The horizontal axis has preset values ​​XC, XD, XE, and XF, which can be determined according to actual needs and are not limited here. The vertical axis can correspond to the available waste heat levels of Level 1, Level 2, and Level 3. The available waste heat level can also be determined according to actual needs and is not limited here.

[0108] Optionally, based on the current status information and environmental information, the heat absorption priority state of the third heat exchanger in the second heat acquisition line is determined, including: determining the heat absorption priority state based on the difference between the ambient temperature and the saturation temperature in the environmental information.

[0109] In one optional embodiment, the ambient temperature can refer to the actual temperature around the vehicle, and the saturation temperature corresponding to the refrigerant pressure refers to the temperature at which the refrigerant reaches saturation under a specific pressure. In the waste heat recovery system, the refrigerant absorbs the waste heat generated by the engine through circulation and converts it into usable energy. When the ambient temperature is higher than the saturation temperature corresponding to the refrigerant pressure, the efficiency of the refrigerant in absorbing waste heat will decrease because the refrigerant cannot effectively absorb waste heat at higher temperatures. By comparing the difference between the ambient temperature and the saturation temperature corresponding to the refrigerant pressure, the heat absorption priority state can be determined. If the difference is small, it means that the ambient temperature is close to or higher than the saturation temperature corresponding to the refrigerant. At this time, the operation of the waste heat recovery device should be stopped first to avoid wasting energy. Conversely, if the difference is large, it means that the ambient temperature is low. At this time, the waste heat recovery device can continue to be started to improve energy utilization efficiency. By monitoring the difference between the ambient temperature and the saturation temperature corresponding to the refrigerant pressure, the operating state of the waste heat recovery system can be effectively controlled to achieve optimal energy utilization efficiency.

[0110] Figure 8 This is a schematic diagram illustrating an optional method for determining the heat absorption priority state of a third heat exchanger according to an embodiment of the present invention, as shown below. Figure 8 As shown, the horizontal axis of the image can represent the difference between the ambient temperature and the saturation temperature, and the vertical axis can represent the heat absorption priority level. The horizontal axis has preset values ​​XA and XB, which can be determined according to actual needs, and are not limited here. The heat absorption priority state corresponding to the vertical axis can include preferential heat absorption from the second heat exchanger and preferential heat absorption from the third heat exchanger. The heat absorption priority state can also be determined according to actual needs, and are not limited here.

[0111] For example, Table 1 below is a table of optional parameter values ​​according to an embodiment of the present invention:

[0112] Table 1

[0113] Pre-set parameters Example values XA 2(℃) XB 4(℃) XC 4(℃) XD 8(℃) XE 28(℃) XF 30(℃) Pre-set speed threshold 1500 / 1800 or the like (r / min)

[0114] According to another aspect of the present invention, a vehicle waste heat recovery control device is also provided. This device can execute the vehicle waste heat recovery control method of the above embodiments. The specific implementation method and preferred application scenarios are the same as those of the above embodiments, and will not be described in detail here.

[0115] Figure 9 This is a schematic diagram of a vehicle waste heat recovery control device according to an embodiment of this application, as shown below. Figure 9 As shown, the device includes the following: an acquisition module 902, a determination module 904, and a control module 906.

[0116] The acquisition module 902 is used to acquire the current status information of the vehicle and the environmental information of the external environment in which the vehicle is located; the determination module 904 is used to determine the target waste heat recovery mode that needs to be controlled for the vehicle based on the current status information and environmental information; and the control module 906 is used to control the on / off state of the first heat collection line and the second heat collection line based on the target waste heat recovery mode, so as to recover heat from the electric drive system in the vehicle and / or the external environment.

[0117] The control module is further configured to: control both the first and second heat collection lines to be in a conducting state when the target waste heat recovery mode is the first waste heat recovery mode, so as to recover heat from the electric drive system and the external environment; control the first heat collection line to be in a conducting state and the second heat collection line to be in a disconnected state when the target waste heat recovery mode is the second waste heat recovery mode, so as to recover heat generated by the electric drive system; and control the second heat collection line to be in a conducting state and the first heat collection line to be in a disconnected state when the target waste heat recovery mode is the third waste heat recovery mode, so as to recover heat from the external environment.

[0118] The determination module is further used to determine the initial waste heat recovery mode based on the first preset judgment condition set, current status information and environmental information; and after the vehicle has been running in the initial waste heat recovery mode for a preset period of time, to determine the target waste heat recovery mode based on the initial waste heat recovery mode, current status information and environmental information.

[0119] The first preset judgment condition set is that there is a heat demand instruction in the current state information and the ambient temperature in the environmental information is greater than the preset ambient temperature; the determination module is also used to determine the initial waste heat recovery mode as the first waste heat recovery mode when the current state information and environmental information meet the first preset judgment condition; and to determine the initial waste heat recovery mode as the non-waste heat recovery mode when the current state information and environmental information do not meet the first preset condition.

[0120] The determining module is further configured to, when the initial waste heat recovery mode is the first waste heat recovery mode, determine the available waste heat level of the second heat exchanger in the first heat acquisition line, the heat absorption priority state of the third heat exchanger in the second heat acquisition line, and the compressor speed in the heat transfer line based on the current state information and environmental information. The available waste heat level is used to represent the preset level corresponding to the current available waste heat of the second heat exchanger, and the heat absorption priority state is used to represent whether the third heat exchanger absorbs heat preferentially compared to the second heat exchanger. Based on the current state information and environmental information, the initial waste heat recovery mode is adjusted to obtain the target waste heat recovery mode.

[0121] The determining module is further configured to acquire a second preset judgment condition set and a third preset judgment condition set, wherein the available waste heat level corresponding to the third preset judgment condition set is higher than the available waste heat level corresponding to the second preset judgment condition set; if the current state of the vehicle meets the third preset judgment condition set, the target waste heat recovery mode is determined to be the second waste heat recovery mode; if the current state of the vehicle meets the second preset judgment condition set but does not meet the third preset judgment condition set, the target waste heat recovery mode is determined to be the third waste heat recovery mode; if the current state of the vehicle does not meet the second preset judgment condition set and does not meet the third preset judgment condition set, the target waste heat recovery mode is determined to be the first waste heat recovery mode.

[0122] The determining module is further configured to determine a second preset judgment condition set consisting of a condition set in which the available waste heat level is the first waste heat level, the heat absorption priority state is that the third heat exchanger absorbs heat preferentially compared to the second heat exchanger, and the compressor speed is less than a preset speed threshold; and to determine a third preset judgment condition set consisting of a condition set in which the available waste heat level is the second waste heat level, the heat absorption priority state is that the second heat exchanger absorbs heat preferentially compared to the third heat exchanger, and the compressor speed is greater than or equal to a preset speed threshold, wherein the second waste heat level is higher than the first waste heat level.

[0123] The determination module is also used to obtain the saturation temperature corresponding to the input water temperature and refrigerant pressure of the second heat exchanger in the current status information; and to determine the available waste heat level based on the difference between the input water temperature and the saturation temperature.

[0124] The determination module is also used to determine the heat absorption priority state based on the difference between the ambient temperature and the saturation temperature in the environmental information.

[0125] Embodiments of this application also provide an electronic device, including: a memory storing an executable program; and a processor for running the program, wherein the program executes the methods in various embodiments of the present invention during runtime.

[0126] The aforementioned memory can refer to devices inside a computer used to store data and programs, including RAM, hard disks, etc. RAM can be used to temporarily store running programs and data, while hard disks can be used to store programs and data long-term. Memory enables the computer to read and write data and execute programs. The aforementioned processor is responsible for executing instructions in computer programs and performing data processing. It can also be responsible for controlling and executing various operations, including arithmetic operations, logical operations, and data transmission.

[0127] Embodiments of this application also provide a computer-readable storage medium including a stored executable program, wherein, when the executable program is running, it controls the device where the computer-readable storage medium is located to perform the methods of various embodiments of the present invention.

[0128] The aforementioned computer storage media can refer to the media used in computer memory to store certain discontinuous physical quantities. Computer storage media mainly include semiconductors, magnetic cores, magnetic drums, magnetic tapes, laser discs, etc. Computer-readable storage media include stored programs, which can be a set of instructions that a computer can recognize and execute, running on an electronic computer to meet certain information needs.

[0129] Embodiments of this application also provide a computer program product, including a computer program that, when executed by a processor, implements the methods of various embodiments of the present invention.

[0130] The aforementioned computer program products can refer to software programs that have been written, tested, and released, and can run on computers or other devices. Computer program products can include application programs, operating systems, utility software, etc., used to achieve specific functions or solve specific problems.

[0131] Embodiments of this application also provide a computer program product, including a non-volatile computer-readable storage medium for storing a computer program that, when executed by a processor, implements the methods in various embodiments of the present invention.

[0132] The aforementioned non-volatile computer-readable storage medium can refer to a medium for storing data. Non-volatile computer-readable storage media can retain data without loss when power is off and can be used to store long-term data, such as operating systems, applications, and user files. Non-volatile storage media can include hard disk drives, solid-state drives, optical disks, and flash memory storage devices, etc.

[0133] Embodiments of this application also provide a computer program that, when executed by a processor, implements the methods described in the various embodiments of the present invention.

[0134] The aforementioned computer program can refer to a set of instructions used to tell the computer to perform specific tasks or operations. Computer programs can be written by programmers using specific programming languages ​​and can include algorithms, data structures, logic, and control flow. Computer programs can be used for a variety of purposes, including application software, operating systems, etc.

[0135] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0136] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0137] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0138] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0139] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0140] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A vehicle waste heat recovery control method applied to a vehicle waste heat recovery system, characterized by, The vehicle waste heat recovery system comprises: A first heat collection circuit is used to collect heat generated by an electric drive system in a vehicle to obtain first heat; a second heat collection circuit is used to collect heat of an external environment in which the vehicle is located to obtain second heat, wherein the heat of the external environment in which the vehicle is located includes solar radiation and engine exhaust; a heat transfer circuit has a first input end connected with an output end of the first heat collection circuit, and an output end of the heat transfer circuit connected with an input end of the first heat collection circuit to form a first waste heat recovery loop; the heat transfer circuit has a second input end connected with an output end of the second heat collection circuit, and an output end of the heat transfer circuit connected with an input end of the second heat collection circuit to form a second waste heat recovery loop, and the heat transfer circuit is used to supply the vehicle with the first heat and / or the second heat; a controller is connected with the first heat collection circuit and the second heat collection circuit, and is used to obtain current state information of the vehicle and environmental information of the external environment, determine a target waste heat recovery mode in which the vehicle needs to be controlled to enter based on the current state information and the environmental information, and control on-off states of the first heat collection circuit and the second heat collection circuit based on the target waste heat recovery mode to recover heat of the electric drive system in the vehicle and / or the external environment, wherein the current state information includes user-defined parameter information, temperatures of a battery and a motor in the electric drive system of the vehicle, running times of the battery and the motor in the electric drive system of the vehicle, and temperature rise curves of the battery and the motor in the electric drive system of the vehicle; The method comprises: Obtaining current state information of a vehicle and environmental information of an external environment in which the vehicle is located; In a case where the current state information and the environmental information satisfy a first preset judgment condition set, determining that an initial waste heat recovery mode is a first waste heat recovery mode, wherein the first preset judgment condition set is that there is a heat demand instruction in the current state information, and an environmental temperature in the environmental information is greater than a preset environmental temperature; A condition set consisting of a first waste heat level of a second heat exchanger in the first heat collection circuit, a heat absorption priority state of a third heat exchanger in the second heat collection circuit, and a compressor rotation speed in the heat transfer circuit is a second preset judgment condition set, wherein the waste heat level, the heat absorption priority state, and the compressor rotation speed are obtained based on the current state information and the environmental information in a case where the initial waste heat recovery mode is the first waste heat recovery mode. The condition set that the available waste heat level is a second waste heat level, the heat absorption priority state is that the second heat exchanger is preferentially heat absorbed compared to the third heat exchanger, and the compressor rotating speed is greater than or equal to the preset rotating speed threshold value, is determined as a third preset judgment condition set, wherein the second waste heat level is higher than the first waste heat level; In a case where the current state of the vehicle meets the third preset judgment condition set, the target waste heat recovery mode is determined as a second waste heat recovery mode; In a case where the current state of the vehicle meets the second preset judgment condition set and does not meet the third preset judgment condition set, the target waste heat recovery mode is determined as a third waste heat recovery mode; In a case where the current state of the vehicle does not meet the second preset judgment condition set and does not meet the third preset judgment condition set, the target waste heat recovery mode is determined as the first waste heat recovery mode; Based on the target waste heat recovery mode, the on-off state of the first heat collection line and the second heat collection line is controlled to recover heat of the electric drive system in the vehicle and / or the external environment.

2. The vehicle waste heat recovery control method according to claim 1, characterized by, Based on the target waste heat recovery mode, the on-off state of the first heat collection line and the second heat collection line is controlled to recover heat of the electric drive system in the vehicle and / or the external environment, including: In a case where the target waste heat recovery mode is the first waste heat recovery mode, the first heat collection line and the second heat collection line are controlled to be in a conducting state to recover heat of the electric drive system and the external environment; In a case where the target waste heat recovery mode is the second waste heat recovery mode, the first heat collection line is controlled to be in a conducting state and the second heat collection line is controlled to be in a disconnected state to recover heat generated by the electric drive system; In a case where the target waste heat recovery mode is the third waste heat recovery mode, the second heat collection line is controlled to be in a conducting state and the first heat collection line is controlled to be in a disconnected state to recover heat of the external environment.

3. The vehicle waste heat recovery control method according to claim 1, characterized by, The method further includes: In a case where the current state information and the environment information do not meet the first preset judgment condition set, the initial waste heat recovery mode is determined as a non-waste heat recovery mode.

4. The vehicle waste heat recovery control method according to claim 1, characterized by, After the vehicle runs for a preset time length in the initial waste heat recovery mode, the target waste heat recovery mode is determined based on the initial waste heat recovery mode, the current state information and the environment information, including: In a case where the initial waste heat recovery mode is the first waste heat recovery mode, the available waste heat level of the second heat exchanger in the first heat collection line, the heat absorption priority state of the third heat exchanger in the second heat collection line and the compressor rotating speed in the heat transfer line are determined based on the current state information and the environment information, wherein the available waste heat level is used to represent a preset level corresponding to a current available waste heat amount of the second heat exchanger, and the heat absorption priority state is used to represent whether the third heat exchanger preferentially absorbs heat compared to the second heat exchanger.

5. The vehicle waste heat recovery control method according to claim 4, characterized by, Based on the current state information and the environment information, determine the available waste heat level of the second heat exchanger in the first heat collection line, including: Obtain the input end water temperature and the corresponding saturated temperature of the refrigerant pressure of the second heat exchanger in the current state information; Determine the available waste heat level based on the difference between the input end water temperature and the saturated temperature.

6. The vehicle waste heat recovery control method according to claim 4, characterized by, Based on the current state information and the environment information, determine the heat absorption priority state of the third heat exchanger in the second heat collection line, including: Determine the heat absorption priority state based on the difference between the ambient temperature and the corresponding saturated temperature of the refrigerant pressure in the environment information.

7. A vehicle waste heat recovery control device characterized by comprising: Including: An acquisition module is configured to acquire current state information of a vehicle and environment information of an external environment in which the vehicle is located, wherein the current state information includes user-defined parameter information, temperatures of a battery and a motor in an electric drive system of the vehicle, operating times of the battery and the motor in the electric drive system, and temperature rise curves of the battery and the motor in the electric drive system; A determination module is configured to determine a target waste heat recovery mode in which the vehicle needs to be controlled to enter based on the current state information and the environment information; A control module is configured to control on-off states of a first heat collection line and a second heat collection line based on the target waste heat recovery mode, so as to recover heat of an electric drive system in the vehicle and / or the external environment, wherein the heat of the external environment in which the vehicle is located includes solar radiation and engine emissions. The determining module is further configured to determine, when the current state information and the environment information satisfy a first preset judgment condition set, that an initial waste heat recovery mode is a first waste heat recovery mode, wherein the first preset judgment condition set is that the current state information includes a heat demand instruction and an environment temperature in the environment information is greater than a preset environment temperature; determine, as a second preset judgment condition set, that an available waste heat level of a second heat exchanger in the first heat collection line is a first waste heat level, a heat absorption priority state of a third heat exchanger in a second heat collection line is that the third heat exchanger has a higher heat absorption priority than the second heat exchanger, and a compressor rotation speed in a heat transfer line is less than a preset rotation speed threshold, wherein the available waste heat level, the heat absorption priority state, and the compressor rotation speed are obtained based on the current state information and the environment information when the initial waste heat recovery mode is the first waste heat recovery mode; determine, as a third preset judgment condition set, that the available waste heat level is a second waste heat level, the heat absorption priority state is that the second heat exchanger has a higher heat absorption priority than the third heat exchanger, and the compressor rotation speed is greater than or equal to the preset rotation speed threshold, wherein the second waste heat level is higher than the first waste heat level; determine, when the current state of the vehicle satisfies the third preset judgment condition set, that the target waste heat recovery mode is a second waste heat recovery mode; determine, when the current state of the vehicle satisfies the second preset judgment condition set and does not satisfy the third preset judgment condition set, that the target waste heat recovery mode is a third waste heat recovery mode; and determine, when the current state of the vehicle does not satisfy the second preset judgment condition set and does not satisfy the third preset judgment condition set, that the target waste heat recovery mode is the first waste heat recovery mode.

8. An electronic device, comprising: The memory stores an executable program. The processor is configured to execute the program, and the program is configured to execute the vehicle waste heat recovery control method in any one of claims 1 to 6 when executed. The computer readable storage medium includes a stored executable program, and the executable program is configured to control a device in which the storage medium is located to execute the vehicle waste heat recovery control method in any one of claims 1 to 6 when executed.

9. A computer-readable storage medium, characterized in that, The computer program includes a computer program that, when executed by a processor, implements the vehicle waste heat recovery control method in any one of claims 1 to 6.

10. A computer program product, characterised in that, ​

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