Method and device for recovering waste heat of pure electric vehicle, electronic equipment and storage medium

Abstract

The application relates to a waste heat recovery method and device of a pure electric vehicle, electronic equipment and a storage medium. The method comprises the following steps: acquiring a current environment temperature of the pure electric vehicle; if it is determined according to the current environment temperature that heating cannot be provided for a to-be-heated component of the pure electric vehicle, acquiring an electric drive outlet water temperature of the pure electric vehicle and a preset temperature, wherein the preset temperature is related to the to-be-heated component; and if the electric drive outlet water temperature is greater than the preset temperature, heating the to-be-heated component by using electric drive waste heat. The application can reduce the design difficulty.

Description

Technical Field

[0001] This invention relates to the field of pure electric vehicle technology, and more specifically to waste heat recovery methods, devices, electronic equipment, and storage media for pure electric vehicles. Background Technology

[0002] With the development of vehicle electrification, the popularity of pure electric vehicles is increasing. Pure electric vehicles are mainly driven by electric drives, which generate heat during operation. From the perspective of saving energy consumption for the entire vehicle, the utilization of this heat needs to be considered. Pure electric vehicles require heating for both the passenger compartment and the battery in different scenarios. Based on the design of different existing system architectures, some systems use air-cooled PTC heaters to heat the passenger compartment and use heating films for self-heating of the battery, while other systems use water-cooled PTC heaters to heat both the passenger compartment and the battery.

[0003] Current systems require many additional calculation parameters and judgment conditions when heating pure electric vehicles, making the heating process complex and consequently the software complex, thus posing a significant challenge to the design of heating control software. Summary of the Invention

[0004] The purpose of this invention is to provide a method, apparatus, electronic device, and storage medium for waste heat recovery from pure electric vehicles, in order to solve the problem of high difficulty in designing heating control software in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A method for waste heat recovery from a pure electric vehicle, the method comprising:

[0007] Obtain the current ambient temperature of the pure electric vehicle;

[0008] If it is determined based on the current ambient temperature that heating cannot be supplied to the components to be heated in the pure electric vehicle, then the electric drive outlet water temperature and preset temperature of the pure electric vehicle are obtained, wherein the preset temperature is related to the components to be heated;

[0009] If the outlet water temperature of the electric drive is greater than the preset temperature, the waste heat from the electric drive is used to heat the component to be heated.

[0010] Furthermore, the component to be heated is a heat pump system, and the preset temperature is the current ambient temperature;

[0011] Determining that heating cannot be supplied to the components to be heated in a pure electric vehicle based on the current ambient temperature includes: determining that the current ambient temperature is lower than the set ambient temperature;

[0012] If the outlet water temperature of the electric drive is greater than the preset temperature, then using the waste heat of the electric drive to heat the component to be heated includes: if the outlet water temperature of the electric drive is greater than the current ambient temperature, then using the waste heat of the electric drive to heat the heat pump system.

[0013] Furthermore, the component to be heated is a battery, and the preset temperature is the battery temperature;

[0014] Determining that heating cannot be supplied to the components to be heated in a pure electric vehicle based on the current ambient temperature includes: determining that the current ambient temperature is lower than the set ambient temperature;

[0015] If the outlet water temperature of the electric drive is greater than the preset temperature, then heating the component to be heated by the waste heat of the electric drive includes: if the outlet water temperature of the electric drive is greater than the battery temperature, then heating the battery by the waste heat of the electric drive.

[0016] Furthermore, the component to be heated is a heat pump system or a battery. After obtaining the current ambient temperature of the pure electric vehicle, the method further includes:

[0017] If the current ambient temperature is determined to be greater than or equal to the set ambient temperature, or if the current ambient temperature is less than the set ambient temperature and the electric drive outlet water temperature is less than or equal to the preset temperature, then the electric drive cooling circuit is entered by adjusting the valve core angle of the three-way proportional valve.

[0018] Furthermore, the component to be heated is a heater core, and the preset temperature is the passenger cabin temperature;

[0019] Determining that heating cannot be provided to the components to be heated in a pure electric vehicle based on the current ambient temperature includes: determining that the current ambient temperature is lower than the passenger compartment temperature;

[0020] If the outlet water temperature of the electric drive is greater than the preset temperature, then heating the component to be heated by the waste heat of the electric drive includes: if the outlet water temperature of the electric drive is greater than the passenger compartment temperature, then heating the heater core by the waste heat of the electric drive.

[0021] Furthermore, the component to be heated is a heater core, the preset temperature is the passenger compartment temperature, and after obtaining the current ambient temperature of the pure electric vehicle, the method further includes:

[0022] If the current ambient temperature is greater than the crew cabin temperature, the electric drive cooling circuit is entered by adjusting the valve core angle of the three-way proportional valve.

[0023] Furthermore, if the current ambient temperature is higher than the passenger compartment temperature, adjusting the valve core angle of the three-way proportional valve to enter the electric drive cooling circuit includes:

[0024] If the current ambient temperature is greater than the crew cabin temperature and the crew cabin temperature is greater than the electric drive outlet water temperature, then the electric drive cooling circuit is entered by adjusting the valve core angle of the three-way proportional valve.

[0025] During system operation, if the current ambient temperature is greater than the electric drive outlet water temperature and the electric drive outlet water temperature is greater than the crew cabin temperature, the system is maintained in the electric drive cooling circuit.

[0026] A waste heat recovery circuit for a pure electric vehicle, the circuit comprising an electric drive, a water pump, a three-way proportional valve, an electric drive radiator, and a component to be heated;

[0027] One end of the electric drive is connected to the input end of the three-way proportional valve via the water pump; the first output end of the three-way proportional valve is connected to the other end of the electric drive via the electric drive radiator; the second output end of the three-way proportional valve is connected to the other end of the electric drive via the component to be heated.

[0028] The electric drive, the water pump, the three-way proportional valve, and the electric drive radiator constitute an electric drive cooling circuit, which is used to cool the component to be heated.

[0029] The electric drive, the water pump, the three-way proportional valve, and the component to be heated constitute a waste heat recovery circuit. The waste heat recovery circuit is used to heat the component to be heated by the waste heat of the electric drive when the current ambient temperature determines that it is not possible to heat the component to be heated in the pure electric vehicle, and the outlet water temperature of the electric drive is greater than the preset temperature. The preset temperature is related to the component to be heated.

[0030] A waste heat recovery system for a pure electric vehicle, the system comprising a vehicle controller, a controller, a sensor for the component to be heated, an ambient temperature sensor, an electric drive outlet water temperature sensor, a water pump, and a three-way proportional valve;

[0031] The controller is connected to the water pump via pulse width modulation or LIN communication to control the water pump to start, and is also connected to the three-way proportional valve via hard wire, pulse width modulation or LIN communication.

[0032] The vehicle controller is connected to the sensor of the component to be heated via a hard wire to obtain a preset temperature;

[0033] The ambient temperature sensor is connected to the controller via a hardwire and is used to obtain the current ambient temperature of the pure electric vehicle.

[0034] The controller is also connected to the electric drive outlet water temperature sensor via hard wiring and to the vehicle controller via CAN or CANFD. It is used to obtain the electric drive outlet water temperature and preset temperature of the pure electric vehicle if it is determined that the heating components of the pure electric vehicle cannot be heated based on the current ambient temperature. If it is determined that the electric drive outlet water temperature is greater than the preset temperature, the controller controls the three-way proportional valve to use the waste heat of the electric drive to heat the components to be heated.

[0035] A waste heat recovery device for a pure electric vehicle, the device comprising:

[0036] The acquisition module is used to obtain the current ambient temperature of the pure electric vehicle.

[0037] The determination module is used to obtain the electric drive outlet water temperature and a preset temperature of the pure electric vehicle if it is determined from the current ambient temperature that it is not possible to heat the components to be heated in the pure electric vehicle. The preset temperature is related to the components to be heated.

[0038] A heating module is used to heat the component to be heated by using the waste heat from the electric drive if the outlet water temperature is higher than the preset temperature.

[0039] An electronic device includes a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus;

[0040] Memory, used to store computer programs;

[0041] A processor, when executing a program stored in memory, implements any of the methods described above.

[0042] A computer-readable storage medium storing a computer program that, when executed by a processor, implements any of the methods described above.

[0043] The beneficial effects of this invention are:

[0044] In this application, only three temperatures are collected: the current ambient temperature, the electric drive outlet water temperature, and the preset temperature. The amount of data collected is small, and only two judgment conditions are required: whether the current ambient temperature can provide heat for the heating components of the pure electric vehicle, and whether the electric drive outlet water temperature is greater than the preset temperature. The waste heat recovery of the pure electric vehicle can be carried out through the above three collected temperature data and two judgment conditions, which reduces software complexity and lowers the design difficulty of heating control software. Attached Figure Description

[0045] Figure 1 This is a flowchart of the waste heat recovery method for pure electric vehicles in this invention;

[0046] Figure 2 This is a schematic diagram of the waste heat recovery system for a pure electric vehicle in this invention;

[0047] Figure 3 This is a schematic diagram of the system architecture for heating in the heat pump system of this invention;

[0048] Figure 4 This is a control flowchart of the heat pump system heating in this invention;

[0049] Figure 5 This is a schematic diagram of the battery heating system architecture in this invention;

[0050] Figure 6 This is a flowchart illustrating the control process for battery heating in this invention.

[0051] Figure 7 This is a schematic diagram of the system architecture for heating the warm air core in this invention;

[0052] Figure 8 This is a flowchart illustrating the control process for heating the warm air core in this invention.

[0053] Figure 9 This is a schematic diagram of the waste heat recovery device for a pure electric vehicle in this invention;

[0054] Figure 10 This is a schematic diagram of the structure of an electronic device according to the present invention. Detailed Implementation

[0055] The embodiments of the present invention will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention and not for limiting the scope of protection of the present invention.

[0056] The waste heat recovery method for a pure electric vehicle in this application embodiment can be executed by a controller. The waste heat recovery method for a pure electric vehicle provided by this invention will be described in detail below with reference to specific embodiments, such as... Figure 1 As shown, the specific steps are as follows:

[0057] Step 101: Obtain the current ambient temperature of the pure electric vehicle.

[0058] The ambient temperature sensor is used to collect the current ambient temperature of the environment in which the pure electric vehicle is located and transmit the current ambient temperature to the controller.

[0059] Step 102: If it is determined that the heating components of the pure electric vehicle cannot be supplied based on the current ambient temperature, then obtain the electric drive outlet water temperature and preset temperature of the pure electric vehicle.

[0060] The preset temperature is related to the component to be heated.

[0061] The components to be heated are typically heat pump systems, batteries, or heater cores. If the current ambient temperature is high, the temperature of the components to be heated is affected by environmental factors and heating is not required; if the current ambient temperature is low, the components to be heated require heating. If the controller determines that the current ambient temperature is insufficient to heat the components to be heated in the pure electric vehicle, it obtains the electric drive outlet water temperature through the electric drive outlet water temperature sensor and obtains the preset temperature related to the components to be heated through the heating component sensor.

[0062] If the component to be heated is a heat pump system, the preset temperature is the current ambient temperature; if the component to be heated is a battery, the preset temperature is the battery temperature; if the component to be heated is a heater core, the preset temperature is the passenger cabin temperature.

[0063] Step 103: If the water temperature from the electric drive is higher than the preset temperature, the waste heat from the electric drive will be used to heat the components to be heated.

[0064] If the controller determines that the outlet water temperature of the electric drive is higher than the preset temperature, it indicates that the outlet water temperature of the electric drive is high, and the waste heat of the electric drive is used to heat the components to be heated.

[0065] In this application, only three temperatures are collected: the current ambient temperature, the electric drive outlet water temperature, and the preset temperature. The amount of data collected is small, and only two judgment conditions are required: whether the current ambient temperature can provide heat for the heating components of the pure electric vehicle, and whether the electric drive outlet water temperature is greater than the preset temperature. The waste heat recovery of the pure electric vehicle can be carried out through the above three collected temperature data and two judgment conditions, which reduces software complexity and lowers the design difficulty of heating control software.

[0066] Furthermore, since the component to be heated can be a heat pump system, a battery, or a heater core, this application can be used in various application scenarios and according to system requirements, thus expanding its applicability.

[0067] This application also provides a waste heat recovery circuit for a pure electric vehicle. The circuit includes an electric drive, a water pump, a three-way proportional valve, an electric drive radiator, and a component to be heated. One end of the electric drive is connected to the input end of the three-way proportional valve through the water pump. The first output end of the three-way proportional valve is connected to the other end of the electric drive through the electric drive radiator. The second output end of the three-way proportional valve is connected to the other end of the electric drive through the component to be heated.

[0068] The electric drive, water pump, three-way proportional valve, and electric drive radiator constitute the electric drive cooling circuit, which is used to cool the components to be heated. The electric drive, water pump, three-way proportional valve, and components to be heated constitute the waste heat recovery circuit, which is used to heat the components to be heated when it is determined that the current ambient temperature cannot provide heat to the components to be heated in the pure electric vehicle, and the outlet water temperature of the electric drive is higher than the preset temperature. The preset temperature is related to the components to be heated.

[0069] This application also provides a waste heat recovery system for pure electric vehicles, such as... Figure 2 As shown, the system includes a vehicle controller, a controller, sensors for the components to be heated, an ambient temperature sensor, an electric drive outlet water temperature sensor, a water pump, and a three-way proportional valve. The controller is connected to the water pump via pulse width modulation or LIN communication to control the water pump's operation. It is also connected to the three-way proportional valve via hardwired connection, pulse width modulation, or LIN communication. The vehicle controller is connected to the sensors for the components to be heated via hardwired connection to obtain a preset temperature. The ambient temperature sensor is connected to the controller via hardwired connection to obtain the current ambient temperature of the electric vehicle. The controller is also connected to the electric drive outlet water temperature sensor via hardwired connection and to the vehicle controller via CAN or CANFD. If the ambient temperature determines that heating the components to be heated in the electric vehicle is not possible, it obtains the electric drive outlet water temperature and the preset temperature. If the electric drive outlet water temperature is determined to be higher than the preset temperature, it controls the three-way proportional valve to use the waste heat from the electric drive to heat the components.

[0070] In this application, the controller integrates the control function of waste heat recovery, can receive signals from other controllers in the vehicle, and can drive downstream components of the thermal management system, such as electronic water pumps and three-way proportional valves. At the same time, the controller does not have to exist in a physical structure and can be integrated with other area controllers in the vehicle that have control and data acquisition functions.

[0071] In the first embodiment, the component to be heated is a heat pump system, and the preset temperature is the current ambient temperature. If the controller determines that the current ambient temperature is lower than the set ambient temperature and the electric drive outlet water temperature is higher than the current ambient temperature, then the waste heat from the electric drive is used to heat the heat pump system. If the controller determines that the current ambient temperature is greater than or equal to the set ambient temperature, or that the current ambient temperature is lower than the set ambient temperature and the electric drive outlet water temperature is less than or equal to the preset temperature, then the controller adjusts the valve core angle of the three-way proportional valve to enter the electric drive cooling circuit.

[0072] Figure 3A schematic diagram of the system architecture for heating the heat pump system. Loop 1 consists of an electric drive (100), an electric drive water temperature sensor (101), an electric drive water pump (102), a three-way proportional valve (103), and an electric drive radiator (104), forming an electric drive cooling loop; Loop 2 consists of an electric drive (100), an electric drive water temperature sensor (101), an electric drive water pump (102), a three-way proportional valve (103), and a waste heat recovery unit (105), forming a waste heat recovery loop. The system determines whether to enter the waste heat recovery state based on the current ambient temperature T1 and the electric drive outlet water temperature T3. The controller drives the three-way proportional valve (103) to adjust the system loop state.

[0073] Figure 4 The control flowchart for heating the heat pump system is as follows: When the vehicle starts, the electric drive (100) and electric water pump (102) begin operation. The controller monitors the current ambient temperature T1. When T1 is greater than or equal to the set ambient temperature (e.g., T1 ≥ 10℃), the ambient heat exchange meets the requirements, and the controller determines that the system does not need to enter the waste heat recovery state and does not consider using the electric drive waste heat. When T1 is less than the set ambient temperature (e.g., T1 < 10℃), the ambient heat exchange does not meet the requirements, and the controller determines that the system can enter the waste heat recovery state and considers using the electric drive waste heat. The controller monitors the electric drive water temperature... Sensor (101) monitors the electric drive outlet water temperature T3 and monitors the current ambient temperature T1 through the ambient temperature sensor. When T3≤T1, the controller controls the three-way proportional valve (13) to adjust the valve core angle to achieve inlet at port A and outlet at port B. The system enters loop one, the electric drive cooling loop, and the refrigerant system does not consider using the electric drive waste heat. When T3>T1, the controller controls the three-way proportional valve (103) to adjust the valve core angle to achieve inlet at port A and outlet at port C. The system enters loop two, the waste heat recovery loop, and the refrigerant system uses the electric drive waste heat.

[0074] In the second embodiment, the component to be heated is a battery, and the preset temperature is the battery temperature. If the controller determines that the current ambient temperature is lower than the set ambient temperature and the electric drive outlet water temperature is higher than the battery temperature, then the waste heat from the electric drive is used to heat the battery. If the controller determines that the current ambient temperature is greater than or equal to the set ambient temperature, or that the current ambient temperature is lower than the set ambient temperature and the electric drive outlet water temperature is less than or equal to the preset temperature, then the controller adjusts the valve core angle of the three-way proportional valve to enter the electric drive cooling circuit.

[0075] Figure 5 A schematic diagram of a system architecture for battery heating. Waste heat from the electric drive is used to heat the battery, such as... Figure 5As shown, loop one consists of an electric drive (100), an electric drive water temperature sensor (101), an electric drive water pump (102), a three-way proportional valve (103), and an electric drive radiator (104), forming an electric drive cooling loop. Loop two consists of an electric drive (100), an electric drive water temperature sensor (101), an electric drive water pump (102), a three-way proportional valve (103), and a battery (200), forming a battery waste heat recovery loop. The system determines whether to enter the waste heat recovery state based on the current ambient temperature T1, battery temperature T2, and electric drive outlet water temperature T3. The controller drives the three-way proportional valve (103) to adjust the system loop state.

[0076] Figure 6 The control flowchart for battery heating is as follows: When the vehicle starts, the electric drive (100) and electric drive water pump (102) start working. The current ambient temperature T1, battery temperature T2, and electric drive outlet water temperature T3 are as follows: When T1 is greater than or equal to the set ambient temperature, for example, when T1 ≥ 10℃, the system determines that the battery temperature meets the requirements, and there is no need to turn on the battery heating or use the residual heat of the electric drive. The controller controls the three-way proportional valve (103) to adjust the valve core angle to achieve inlet A and outlet B. The system enters loop one, the electric drive cooling loop, and the battery heating does not consider the use of the residual heat of the electric drive; when T1 < 10℃ and T2 ≥ 10℃, the battery heating does not consider the use of the residual heat of the electric drive. At time T3, the battery temperature is higher than the outlet water temperature of the electric drive. At this time, the battery heating cannot use the waste heat of the electric drive. The controller controls the three-way proportional valve (103) to adjust the valve core angle to achieve inlet A and outlet B, and the system enters loop one, the electric drive cooling loop. When T1 < 10℃ and T3 > T2, the controller determines that the system can enter the waste heat recovery state and considers using the waste heat of the electric drive. The controller controls the three-way proportional valve (103) to adjust the valve core angle to achieve inlet A and outlet C, and the system enters loop two, the waste heat recovery loop, and the battery heating system uses the waste heat of the electric drive.

[0077] In the third embodiment, the component to be heated is a heater core, and the preset temperature is the passenger compartment temperature. If the controller determines that the current ambient temperature is lower than the passenger compartment temperature and the electric drive outlet water temperature is higher than the passenger compartment temperature, then the waste heat from the electric drive is used to heat the heater core. If the current ambient temperature is higher than the passenger compartment temperature and the passenger compartment temperature is higher than the electric drive outlet water temperature, then the valve core angle of the three-way proportional valve is adjusted to enter the electric drive cooling circuit. During system operation, if the current ambient temperature is higher than the electric drive outlet water temperature and the electric drive outlet water temperature is higher than the passenger compartment temperature, the system remains in the electric drive cooling circuit.

[0078] Figure 7 A schematic diagram of the system architecture for heating the heater core. Waste heat from the electric drive is used to heat the passenger compartment, such as... Figure 7As shown, loop one consists of an electric drive (100), an electric drive water temperature sensor (101), an electric drive water pump (102), a three-way proportional valve (103), and an electric drive radiator (104), forming an electric drive cooling loop. Loop two consists of an electric drive (100), an electric drive water temperature sensor (101), an electric drive water pump (102), a three-way proportional valve (103), and a heater core (300), forming a crew cabin waste heat recovery loop. The system determines whether to enter the waste heat recovery state based on the current ambient temperature T1, the crew cabin temperature T4, and the electric drive outlet water temperature T3. The controller drives the three-way proportional valve (103) to adjust the system loop state.

[0079] Figure 6 Control flow chart for heating the heater core. When the vehicle starts, the electric drive (100) and electric drive water pump (102) start working. When there is a heating demand in the passenger compartment, the controller monitors the passenger compartment temperature T4. When the electric drive outlet water temperature T3 > passenger compartment temperature T4 > current ambient temperature T1, the current ambient temperature is too low to heat the heater core, while the electric drive outlet water temperature is too high to heat the heater core. Therefore, the controller determines that the system can enter the waste heat recovery state and considers using the electric drive waste heat. The controller controls the three-way proportional valve (103) to adjust the valve core angle to achieve inlet A and outlet C. The system enters loop two, the waste heat recovery loop.

[0080] When T1 > T4 > T3, the current ambient temperature is higher than the passenger compartment temperature, and the passenger compartment temperature is higher than the electric drive outlet water temperature. At this time, the air conditioning external circulation is turned on, and the current ambient temperature is used to heat the passenger compartment first. The controller determines that the system does not need to enter the waste heat recovery state and does not consider using the electric drive waste heat. The controller controls the three-way proportional valve (103) to adjust the valve core angle to achieve A port inlet and B port outlet, and the system enters the first circuit, the electric drive cooling circuit. When the vehicle has been running for a period of time, when T1 > T3 > T4, the current ambient temperature is still higher than the electric drive outlet water temperature. At this time, the air conditioning external circulation is still turned on, and the system enters the first circuit, the electric drive cooling circuit. The system uses the current ambient temperature to heat the passenger compartment. The controller determines that the system does not need to enter the waste heat recovery state and does not consider using the electric drive waste heat. The three-way proportional valve (103) remains in the previous state, with port A in and port B out. The system is maintained in loop one, the electric drive cooling loop. When the temperature of the electric drive outlet water rises until T3 > T4 > T1, the controller determines that the system can enter the waste heat recovery state and consider using the electric drive waste heat. The controller controls the three-way proportional valve (103) to adjust the valve core angle to achieve port A in and port C out. The system enters loop two, the waste heat recovery loop, and the passenger compartment heating uses the electric drive waste heat.

[0081] Based on the same technical concept, the present invention also provides a waste heat recovery device for pure electric vehicles, such as... Figure 9 As shown, the device includes:

[0082] The acquisition module 901 is used to acquire the current ambient temperature of the pure electric vehicle.

[0083] The determination module 902 is used to obtain the electric drive outlet water temperature and preset temperature of the pure electric vehicle if it is determined from the current ambient temperature that it is not possible to heat the components to be heated in the pure electric vehicle. The preset temperature is related to the components to be heated.

[0084] The heating module 903 is used to heat the components to be heated by the waste heat of the electric drive if the outlet water temperature is higher than the preset temperature.

[0085] Optionally, the component to be heated is a heat pump system, and the preset temperature is the current ambient temperature;

[0086] The determination module 902 is used to: determine that the current ambient temperature is lower than the set ambient temperature;

[0087] The heating module 903 is used to heat the heat pump system by using the waste heat from the electric drive if the outlet water temperature is higher than the current ambient temperature.

[0088] Optionally, the component to be heated is a battery, and the preset temperature is the battery temperature;

[0089] The determination module 902 is used to: determine that the current ambient temperature is lower than the set ambient temperature;

[0090] The heating module 903 is used to heat the battery by using the waste heat from the electric drive if the water temperature at the outlet of the electric drive is higher than the battery temperature.

[0091] Optionally, the component to be heated is a heat pump system or a battery, and the device is used for:

[0092] If the current ambient temperature is greater than or equal to the set ambient temperature, or if the current ambient temperature is less than the set ambient temperature and the electric drive outlet water temperature is less than or equal to the preset temperature, then the electric drive cooling circuit is entered by adjusting the valve core angle of the three-way proportional valve.

[0093] Optionally, the component to be heated is a heater core, and the preset temperature is the passenger cabin temperature;

[0094] The determination module 902 is used to: determine that the current ambient temperature is lower than the crew cabin temperature;

[0095] The heating module 903 is used to heat the heater core by using the waste heat from the electric drive if the water temperature at the outlet of the electric drive is higher than the temperature in the crew cabin.

[0096] Optionally, the component to be heated is a heater core, and the preset temperature is the passenger compartment temperature. This device is also used for:

[0097] If the current ambient temperature is higher than the crew cabin temperature, the cooling circuit for the electric drive is activated by adjusting the valve core angle of the three-way proportional valve.

[0098] Optionally, the device is also used for:

[0099] If the current ambient temperature is greater than the crew cabin temperature and the crew cabin temperature is greater than the electric drive outlet water temperature, the cooling circuit is entered by adjusting the valve core angle of the three-way proportional valve.

[0100] During system operation, if the current ambient temperature is greater than the electric drive outlet water temperature and the electric drive outlet water temperature is greater than the crew cabin temperature, the system will remain in the electric drive cooling circuit.

[0101] According to another aspect of the embodiments of this application, this application provides an electronic device, such as... Figure 10 As shown, the system includes a memory 1003, a processor 1001, a communication interface 1002, and a communication bus 1004. The memory 1003 stores a computer program that can run on the processor 1001. The memory 1003 and the processor 1001 communicate through the communication interface 1002 and the communication bus 1004. When the processor 1001 executes the computer program, it implements the steps of the above method.

[0102] The memory and processor in the aforementioned electronic devices communicate with each other via a communication bus and communication interface. The communication bus can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. This communication bus can be divided into address bus, data bus, control bus, etc.

[0103] The memory may include random access memory (RAM) or non-volatile memory, such as at least one disk storage device. Optionally, the memory may also be at least one storage device located remotely from the aforementioned processor.

[0104] The processors mentioned above can be general-purpose processors, including central processing units (CPUs), network processors (NPs), etc.; they can also be digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0105] According to another aspect of the embodiments of this application, a computer-readable medium having processor-executable non-volatile program code is also provided.

[0106] Optionally, in embodiments of this application, the computer-readable medium is configured to store program code for a processor to execute the above-described methods.

[0107] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0108] In specific implementation, the embodiments of this application can be referred to the above embodiments and have corresponding technical effects.

[0109] It is understood that the embodiments described herein can be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions of this application, or combinations thereof.

[0110] For software implementation, the techniques described herein can be implemented through units that perform the functions described herein. The software code can be stored in memory and executed by a processor. The memory can be implemented within the processor or external to the processor.

[0111] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0112] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0113] In the embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple modules or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0114] 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 network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0115] In addition, the functional units in the various embodiments of this application 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.

[0116] If a function 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 embodiments of this application, or the part that contributes to the prior art, or a 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 of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, mobile hard drives, ROM, RAM, magnetic disks, or optical disks. It should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In the absence of further restrictions, an element defined by the phrase "includes a..." does not preclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0117] The above embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the scope of protection of the present invention.

Claims

1. A method for waste heat recovery from a pure electric vehicle, characterized in that, The method includes: Obtain the current ambient temperature of the pure electric vehicle; If it is determined based on the current ambient temperature that heating cannot be provided to the components to be heated in the pure electric vehicle, then the electric drive outlet water temperature and preset temperature of the pure electric vehicle are obtained. The preset temperature is related to the components to be heated. If the components to be heated are heat pump systems, the preset temperature is the current ambient temperature; if the components to be heated are batteries, the preset temperature is the battery temperature; if the components to be heated are heater cores, the preset temperature is the passenger compartment temperature. If the outlet water temperature of the electric drive is greater than the preset temperature, the waste heat from the electric drive is used to heat the component to be heated. If the current ambient temperature is greater than or equal to the set ambient temperature, or if the current ambient temperature is less than the set ambient temperature and the electric drive outlet water temperature is less than or equal to the preset temperature, then control to enter the electric drive cooling circuit. If the current ambient temperature is higher than the crew compartment temperature, and the crew compartment temperature is higher than the electric drive outlet water temperature, the current ambient temperature is used to heat the crew compartment, which then enters the electric drive cooling circuit. After the vehicle has been running for a period of time, if the current ambient temperature is higher than the electric drive outlet water temperature and the electric drive outlet water temperature is higher than the passenger compartment temperature, it will be maintained in the electric drive cooling circuit. If the temperature of the electric drive outlet water rises until it exceeds the temperature of the crew compartment, and the temperature of the crew compartment exceeds the current ambient temperature, it will enter the waste heat recovery loop.

2. The method according to claim 1, characterized in that, The component to be heated is a heat pump system, and the preset temperature is the current ambient temperature; Determining that heating cannot be supplied to the components to be heated in a pure electric vehicle based on the current ambient temperature includes: determining that the current ambient temperature is lower than the set ambient temperature; If the outlet water temperature of the electric drive is greater than the preset temperature, then using the waste heat of the electric drive to heat the component to be heated includes: if the outlet water temperature of the electric drive is greater than the current ambient temperature, then using the waste heat of the electric drive to heat the heat pump system.

3. The method according to claim 1, characterized in that, The component to be heated is a battery, and the preset temperature is the battery temperature; Determining that heating cannot be supplied to the components to be heated in a pure electric vehicle based on the current ambient temperature includes: determining that the current ambient temperature is lower than the set ambient temperature; If the outlet water temperature of the electric drive is greater than the preset temperature, then heating the component to be heated by the waste heat of the electric drive includes: if the outlet water temperature of the electric drive is greater than the battery temperature, then heating the battery by the waste heat of the electric drive.

4. The method according to claim 1, characterized in that, The component to be heated is a heat pump system or a battery. After obtaining the current ambient temperature of the pure electric vehicle, the method further includes: If the current ambient temperature is determined to be greater than or equal to the set ambient temperature, or if the current ambient temperature is less than the set ambient temperature and the electric drive outlet water temperature is less than or equal to the preset temperature, then the electric drive cooling circuit is entered by adjusting the valve core angle of the three-way proportional valve.

5. The method according to claim 1, characterized in that, The component to be heated is a heater core, and the preset temperature is the passenger cabin temperature. Determining that heating cannot be provided to the components to be heated in a pure electric vehicle based on the current ambient temperature includes: determining that the current ambient temperature is lower than the passenger compartment temperature; If the outlet water temperature of the electric drive is greater than the preset temperature, then heating the component to be heated by the waste heat of the electric drive includes: if the outlet water temperature of the electric drive is greater than the passenger compartment temperature, then heating the heater core by the waste heat of the electric drive.

6. The method according to claim 1, characterized in that, The component to be heated is a heater core, the preset temperature is the passenger compartment temperature, and after obtaining the current ambient temperature of the pure electric vehicle, the method further includes: If the current ambient temperature is higher than the crew cabin temperature, the electric drive cooling circuit is entered by adjusting the valve core angle of the three-way proportional valve.

7. The method according to claim 6, characterized in that, If the current ambient temperature is greater than the crew cabin temperature, then adjusting the valve core angle of the three-way proportional valve to enter the electric drive cooling circuit includes: If the current ambient temperature is greater than the crew cabin temperature and the crew cabin temperature is greater than the electric drive outlet water temperature, then the electric drive cooling circuit is entered by adjusting the valve core angle of the three-way proportional valve. During system operation, if the current ambient temperature is greater than the electric drive outlet water temperature and the electric drive outlet water temperature is greater than the crew cabin temperature, the system is maintained in the electric drive cooling circuit.

8. A waste heat recovery circuit for a pure electric vehicle, characterized in that, The circuit includes an electric drive, a water pump, a three-way proportional valve, an electric drive radiator, and the component to be heated; One end of the electric drive is connected to the input end of the three-way proportional valve via the water pump; the first output end of the three-way proportional valve is connected to the other end of the electric drive via the electric drive radiator; the second output end of the three-way proportional valve is connected to the other end of the electric drive via the component to be heated. The electric drive, the water pump, the three-way proportional valve, and the electric drive radiator constitute an electric drive cooling circuit, which is used to cool the component to be heated. The electric drive, the water pump, the three-way proportional valve, and the component to be heated constitute a waste heat recovery circuit. This circuit is used to heat the component when the current ambient temperature is insufficient to supply heat to the pure electric vehicle's component, and the electric drive's outlet water temperature is higher than a preset temperature. The preset temperature is related to the component to be heated: if the component is a heat pump system, the preset temperature is the current ambient temperature; if the component is a battery, the preset temperature is the battery temperature; if the component is a heater core, the preset temperature is the passenger compartment temperature. The waste heat recovery circuit is also used to control the flow into the electric drive cooling circuit when the current ambient temperature is greater than or equal to the set ambient temperature, or when the current ambient temperature is less than the set ambient temperature and the electric drive outlet water temperature is less than or equal to the preset temperature. The electric drive cooling circuit is also used to heat the crew compartment using the current ambient temperature when the current ambient temperature is higher than the crew compartment temperature and the crew compartment temperature is higher than the electric drive outlet water temperature. The waste heat recovery circuit is also used to maintain the electric drive cooling circuit if the current ambient temperature is higher than the electric drive outlet water temperature and the electric drive outlet water temperature is higher than the passenger compartment temperature after the vehicle has been running for a period of time; if the electric drive outlet water temperature rises until it is higher than the passenger compartment temperature and the passenger compartment temperature is higher than the current ambient temperature, it enters the waste heat recovery circuit.

9. A waste heat recovery system for a pure electric vehicle, characterized in that, The system includes a vehicle controller, a controller, sensors for components to be heated, an ambient temperature sensor, an electric drive outlet water temperature sensor, a water pump, and a three-way proportional valve; The controller is connected to the water pump via pulse width modulation or LIN communication to control the water pump to start, and is also connected to the three-way proportional valve via hard wire, pulse width modulation or LIN communication. The vehicle controller is hardwired to the sensor of the component to be heated, and is used to obtain a preset temperature related to the component to be heated. If the component to be heated is a heat pump system, the preset temperature is the current ambient temperature; if the component to be heated is a battery, the preset temperature is the battery temperature; if the component to be heated is a heater core, the preset temperature is the passenger compartment temperature. The ambient temperature sensor is connected to the controller via a hardwire and is used to obtain the current ambient temperature of the pure electric vehicle. The controller is also connected to the electric drive outlet water temperature sensor via hard wiring and to the vehicle controller via CAN or CANFD. It is used to obtain the electric drive outlet water temperature and a preset temperature of the pure electric vehicle if the current ambient temperature determines that heating cannot be provided to the components to be heated in the pure electric vehicle. If the electric drive outlet water temperature is determined to be higher than the preset temperature, the controller controls the three-way proportional valve to use the waste heat from the electric drive to heat the components to be heated. The controller is further configured to control the flow into the electric drive cooling circuit by controlling the three-way proportional valve when the current ambient temperature is greater than or equal to the set ambient temperature, or when the current ambient temperature is less than the set ambient temperature and the electric drive outlet water temperature is less than or equal to the preset temperature. The controller is also used to heat the crew compartment using the current ambient temperature when the current ambient temperature is higher than the crew compartment temperature and the crew compartment temperature is higher than the electric drive outlet water temperature, and then enter the electric drive cooling circuit. After the vehicle has been running for a period of time, if the current ambient temperature is higher than the electric drive outlet water temperature and the electric drive outlet water temperature is higher than the passenger compartment temperature, it will be maintained in the electric drive cooling circuit. If the temperature of the electric drive outlet water rises until it exceeds the temperature of the crew compartment, and the temperature of the crew compartment exceeds the current ambient temperature, it will enter the waste heat recovery loop.

10. A waste heat recovery device for a pure electric vehicle, characterized in that, The device includes: The acquisition module is used to obtain the current ambient temperature of the pure electric vehicle. The determination module is used to obtain the electric drive outlet water temperature and a preset temperature of the pure electric vehicle if it is determined from the current ambient temperature that heating cannot be provided to the components to be heated in the pure electric vehicle. The preset temperature is related to the components to be heated. If the components to be heated are heat pump systems, the preset temperature is the current ambient temperature; if the components to be heated are batteries, the preset temperature is the battery temperature; if the components to be heated are heater cores, the preset temperature is the passenger compartment temperature. A heating module is used to heat the component to be heated by using the waste heat from the electric drive if the outlet water temperature is higher than the preset temperature. The device is also used to control the entry into the electric drive cooling circuit if the current ambient temperature is greater than or equal to the set ambient temperature, or if the current ambient temperature is less than the set ambient temperature and the electric drive outlet water temperature is less than or equal to the preset temperature. The device is also used to heat the crew compartment using the current ambient temperature if the current ambient temperature is higher than the crew compartment temperature and the crew compartment temperature is higher than the electric drive outlet water temperature, and then enter the electric drive cooling circuit. After the vehicle has been running for a period of time, if the current ambient temperature is higher than the electric drive outlet water temperature and the electric drive outlet water temperature is higher than the passenger compartment temperature, it will be maintained in the electric drive cooling circuit. If the temperature of the electric drive outlet water rises until it exceeds the temperature of the crew compartment, and the temperature of the crew compartment exceeds the current ambient temperature, it will enter the waste heat recovery loop.

11. An electronic device, characterized in that, It includes a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus; Memory, used to store computer programs; A processor, when executing a program stored in memory, implements the method described in any one of claims 1-7.

12. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the method described in any one of claims 1-7.

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