Hybrid electric vehicle heat source selection control method and system, electronic equipment and medium

Abstract

The invention provides a hybrid electric vehicle heat source selection control method and system, electronic equipment and a medium, and belongs to the technical field of automobile heat management.The method comprises the steps that in response to a passenger compartment heating request signal, the engine loop water temperature T or the engine rotating speed N is obtained; when the water temperature T of the engine loop is smaller than or equal to a temperature threshold value T1 or the rotating speed N of the engine is smaller than or equal to a rotating speed threshold value N1, only electric heating is selected as a heat source, and the electric heating is controlled to supply heat to a passenger compartment; when the water temperature T of the engine loop is larger than the temperature threshold value T1 or the rotating speed N of the engine is larger than the rotating speed threshold value N1, the engine and the electric heater are selected as heat sources at the same time, and the engine and the electric heater are controlled to supply heat to the passenger compartment at the same time. The heat source selection priority can be recognized, the heat source is effectively selected to provide warm air for the passenger compartment, the heat source is reasonably utilized, the comfort of the passenger compartment is improved, energy consumption is reduced, and the endurance mileage in winter is increased.

Description

Technical Field

[0001] This invention relates to the field of automotive thermal management technology, and in particular to a method and system for selecting and controlling heat sources in hybrid vehicles, as well as electronic devices and media. Background Technology

[0002] With the increasing popularity of new energy vehicles, thermal management is needed to address the range issues of new energy vehicles in winter and summer.

[0003] Compared to pure electric vehicles, hybrid vehicles have a more complex thermal management structure, which not only needs to consider the cooling performance of the engine, but also the cooling requirements of the motor and battery, as well as the heat exchange and air conditioning control of the passenger compartment.

[0004] Hybrid vehicles have two heat sources, an engine and a PTC (Power Transmission Control Unit), to provide heating for the passenger compartment. How to effectively select the heat source to save energy and improve the driving range is a technical problem that urgently needs to be solved. Summary of the Invention

[0005] The present invention aims to solve at least one of the above-mentioned problems in the prior art and provides a heat source selection control method based on the heat source management system of a hybrid vehicle. The method determines the priority of heat source selection based on the heat source management system scheme and the temperature of each circuit, thereby reducing unnecessary energy consumption and improving the driving range in winter.

[0006] In a first aspect, embodiments of the present invention provide a method for selecting and controlling the heat source of a hybrid vehicle, comprising:

[0007] In response to a crew cabin heating request signal, obtain the engine circuit coolant temperature T or engine speed N;

[0008] When the engine circuit water temperature T is less than or equal to the temperature threshold T1 or the engine speed N is less than or equal to the speed threshold N1, only electric heating is selected as the heat source, and electric heating is controlled to provide heat to the passenger compartment.

[0009] When the engine circuit water temperature T is greater than the temperature threshold T1 or the engine speed N is greater than the speed threshold N1, the engine and electric heating are selected as heat sources at the same time, and the engine and electric heating are controlled to heat the passenger compartment simultaneously.

[0010] In a preferred embodiment, the step of selecting both the engine and electric heater as heat sources simultaneously, and controlling both the engine and electric heater to simultaneously heat the passenger compartment when the engine circuit water temperature T is greater than the temperature threshold T1 or the engine speed N is greater than the speed threshold N1, includes:

[0011] When the engine circuit water temperature T is greater than the temperature threshold T1 or the engine speed N is greater than the speed threshold N1, and the engine circuit water temperature T is less than or equal to the passenger compartment target outlet air temperature T2 plus the temperature threshold T3, the engine and electric heating are selected as heat sources at the same time, and the engine and electric heating are controlled to heat the passenger compartment at the same time.

[0012] When the engine circuit coolant temperature T is greater than the temperature threshold T1 or the engine speed N is greater than the speed threshold N1, and the engine circuit coolant temperature T is greater than the passenger compartment target outlet air temperature T2 plus the temperature threshold T3, only the engine is selected as the heat source, and the engine is controlled to supply heat to the passenger compartment.

[0013] In a preferred embodiment, the controlled electric heating for heating the passenger compartment is achieved by heating the heater core through electric heating, and the heater core heats the air to provide warm air to the passenger compartment.

[0014] In a preferred embodiment, the control engine provides heating to the passenger compartment by using the heat generated by the engine to heat the heater core through the engine's heating circuit. The heater core heats the air to provide warm air to the passenger compartment. The engine heating circuit includes: an engine, a heater core, a water tank, and a circuit water pump for the engine heating circuit.

[0015] In a preferred embodiment, the electric heating includes: membrane heating and air PTC heating.

[0016] In a preferred embodiment, the step of selecting only electric heating as the heat source and controlling electric heating to provide heat to the passenger compartment when the engine circuit coolant temperature T is less than or equal to the temperature threshold T1 or the engine speed N is less than or equal to the speed threshold N1 includes:

[0017] The electric heating is achieved by using air PTC heating;

[0018] When the engine circuit water temperature T is less than or equal to the temperature threshold T1 or the engine speed N is less than or equal to the speed threshold N1, only the air PTC is selected as the heat source, and the air PTC is controlled to heat the passenger compartment.

[0019] In a preferred embodiment, the step of selecting only the air PTC as the heat source and controlling the air PTC to heat the passenger compartment when the engine circuit water temperature T is less than or equal to the temperature threshold T1 or the engine speed N is less than or equal to the speed threshold N1 includes:

[0020] When only air PTC is selected as the heat source, PID control is performed based on the target outlet air temperature and the actual outlet air temperature. The PID parameters are the preset K1 group, and the target power is sent to the air PTC.

[0021] In a preferred embodiment, the step of selecting both the engine and electric heater as heat sources simultaneously, and controlling both the engine and electric heater to simultaneously heat the passenger compartment when the engine circuit water temperature T is greater than the temperature threshold T1 or the engine speed N is greater than the speed threshold N1, includes:

[0022] The electric heating is achieved by using air PTC heating;

[0023] When the engine circuit coolant temperature T is greater than the temperature threshold T1 or the engine speed N is greater than the speed threshold N1, and the engine circuit coolant temperature T is less than or equal to the passenger compartment target outlet air temperature T2 plus the temperature threshold T3, the engine and air PTC are selected as heat sources at the same time, and the engine and air PTC are controlled to heat the passenger compartment at the same time.

[0024] When the engine circuit coolant temperature T is greater than the temperature threshold T1 or the engine speed N is greater than the speed threshold N1, and the engine circuit coolant temperature T is greater than the passenger compartment target outlet air temperature T2 plus the temperature threshold T3, only the engine is selected as the heat source, and the engine is controlled to supply heat to the passenger compartment.

[0025] In a preferred embodiment, the step of selecting both the engine and the air PTC as heat sources and controlling both the engine and the air PTC to simultaneously heat the passenger compartment when the engine circuit coolant temperature T is greater than the temperature threshold T1 or the engine speed N is greater than the speed threshold N1, and the engine circuit coolant temperature T is less than or equal to the target air outlet temperature T2 of the passenger compartment plus the temperature threshold T3, includes:

[0026] When both the engine and air PTC are selected as heat sources, the temperature damper status of the air conditioning unit is obtained.

[0027] When the temperature damper is in the hot end position, PID control is performed based on the target outlet air temperature and the actual outlet air temperature. The PID parameters are the preset K2 group, and the target power is sent to the air PTC.

[0028] When the temperature damper is not at the hot end, the air PTC is shut off, and the target power sent to the air PTC is 0.

[0029] In a second aspect, embodiments of the present invention provide a hybrid vehicle heat source selection control system, the system being capable of implementing any of the methods described in the first aspect, the system comprising:

[0030] The acquisition module is used to acquire the engine circuit water temperature T or engine speed N in response to the crew cabin heating request signal;

[0031] The heat source selection control module is used to select only electric heating as the heat source when the engine circuit water temperature T is less than or equal to the temperature threshold T1 or the engine speed N is less than or equal to the speed threshold N1, and control the electric heating to provide heat to the passenger compartment; it is also used to select both the engine and electric heating as heat sources when the engine circuit water temperature T is greater than the temperature threshold T1 or the engine speed N is greater than the speed threshold N1, and control both the engine and electric heating to provide heat to the passenger compartment at the same time.

[0032] Thirdly, embodiments of the present invention provide an electronic device, including:

[0033] One or more processors;

[0034] a memory for storing one or more programs;

[0035] When the one or more programs are executed by the one or more processors, the one or more processors implement any of the methods described in the first aspect.

[0036] Fourthly, embodiments of the present invention provide a computer-readable medium storing a computer program that, when executed by a processor, implements the steps of any of the methods described in the first aspect.

[0037] Beneficial effects of this invention:

[0038] This invention identifies the priority of heat source selection based on the heat source management system scheme, effectively selects heat sources to provide warm air to the passenger cabin, makes reasonable use of heat sources, improves passenger cabin comfort, reduces energy consumption, and increases winter driving range. Attached Figure Description

[0039] Figure 1 This is a block diagram of a direct-cooling self-heating system for a hybrid vehicle.

[0040] Figure 2 This is a schematic diagram of the overall process of a hybrid vehicle heat source selection and control method provided in an embodiment of the present invention.

[0041] Figure 3 This is a schematic flowchart of a hybrid vehicle heat source selection and control method provided in an embodiment of the present invention.

[0042] Figure 4 This is a schematic flowchart of one embodiment of the air PTC control steps provided in this invention.

[0043] Figure 5 This is a structural block diagram of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0044] To enable those skilled in the art to better understand the technical solutions of the present invention, exemplary embodiments of the present invention are described below in conjunction with the accompanying drawings, including various details of the embodiments of the present invention to aid understanding. These should be considered merely exemplary. Therefore, those skilled in the art should recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present invention. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0045] Where there is no conflict, the various embodiments of the present invention and the features thereof may be combined with each other.

[0046] As used herein, the term “and / or” includes any and all combinations of one or more related enumerated entries.

[0047] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used herein, the singular forms “a” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that when the terms “comprising” and / or “made of” are used in this specification, the presence of the stated feature, integral, step, operation, element, and / or component is specified, but the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof is not excluded. Terms such as “connected” or “linked” are not limited to physical or mechanical connections but can include electrical connections, whether direct or indirect.

[0048] Unless otherwise specified, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art. It will also be understood that terms such as those defined in commonly used dictionaries should be interpreted as having the meaning consistent with their meaning in the context of the relevant art and the invention, and will not be interpreted as having an idealized or overly formal meaning unless expressly so defined herein.

[0049] In the technical solution of this invention, the collection, storage, use, processing, transmission, provision, and disclosure of user personal information all comply with relevant laws and regulations and do not violate public order and good morals. The use of user data in this technical solution follows relevant national laws and regulations (e.g., the "Information Security Technology - Personal Information Security Specification"). For example: appropriate measures are taken for personal information access control; restrictions are imposed on the display of personal information; the purpose of using personal information does not exceed the scope of direct or reasonable association; and explicit identity targeting is eliminated when using personal information to avoid precisely locating a specific individual.

[0050] In this invention, some technical terms have the following meanings:

[0051] APTC stands for Air PTC; PTC refers to a PTC heater (PTC heating element); Air PTC refers to heating air using a PTC heater (PTC heating element), and it is an electric heating solution. Besides PTC heaters, some electric vehicles use membrane heating technology, which typically refers to a solution that transfers heat through a heating membrane.

[0052] HVAC, or Heating, Ventilation and Air Conditioning System, is an air conditioning system specifically designed for automobiles. It integrates three major functions: heating, ventilation, and air conditioning cooling, aiming to provide a comfortable in-vehicle environment for the driver and passengers in the passenger compartment.

[0053] LTRAD stands for Liquid-cooled Thermal Radiator Assembly.

[0054] OBC, Car Charger.

[0055] DCDC, DC-DC converter.

[0056] MCU, Motor Control Unit.

[0057] Figure 1 This is a block diagram of a direct-cooling self-heating system for a hybrid vehicle. The system includes: a drivetrain cooling water circuit, a power battery circuit, and an HVAC (heating, ventilation, and air conditioning) system.

[0058] The drive assembly cooling water circuit includes: LTRAD, water tank 2, motor circuit water pump, OBC, DCDC, and MCU. The OBC on-board charger generates heat during high-power charging, the DCDC DC voltage converter generates heat during high-voltage to 12V low-voltage conversion, and the MCU motor control unit generates heat when driving the motor. This circuit provides active liquid cooling for the high-voltage three-electric system (OBC / DCDC / MCU) to ensure safe operation under high-temperature conditions.

[0059] The power battery circuit includes: an outdoor heat exchanger, a full-throttle valve, a compressor, a power battery, and an electronic expansion valve; this circuit is used to cool the power battery.

[0060] The HVAC system is used for heating, ventilation, and air conditioning of the passenger compartment. Specifically, the outdoor heat exchanger, full-flow throttle valve, compressor, evaporator, and the evaporator electronic expansion valve circuit are used for passenger compartment air conditioning. There are two methods for heating the passenger compartment: one is through a PTC heater core, which heats the air to provide warm air to the passenger compartment; the other is through the engine's heating circuit, which uses heat generated by the engine to heat the heater core, which in turn heats the air to provide warm air to the passenger compartment. The engine heating circuit includes: the engine, the heater core, water tank 1, and the heating circuit's return water pump.

[0061] The embodiments of the present invention are applied to Figure 1 In the system shown, the engine and PTC are the two heat sources that provide heating for the passenger compartment. By identifying the heat source and prioritizing it, energy consumption can be effectively saved and the driving range can be increased.

[0062] In this embodiment of the invention, for ease of description, the following description uses the vehicle controller as the executing entity. The vehicle controller can be a power domain controller, or other electronic devices, vehicle controllers, etc., capable of performing the above functions.

[0063] Figure 2 This is a schematic diagram of the overall flow of a hybrid vehicle heat source selection and control method provided in an embodiment of the present invention. Figure 1 and Figure 2 As shown, the overall process of this method includes:

[0064] Heat source priority selection:

[0065] 1. The controller received a heating request from the crew cabin;

[0066] 2. The controller determines the engine circuit coolant temperature or operating status. When the engine circuit coolant temperature T is greater than the temperature threshold T1 (which can be calibrated) or the engine speed N is greater than the speed threshold N1 (which can be calibrated);

[0067] 3. If the conditions in step 2 are met, then determine the relationship between the engine circuit water temperature T and the target air temperature T2 emitted from the passenger compartment. When the engine circuit water temperature T is greater than the target air temperature T2 of the passenger compartment plus the temperature threshold T3 (which can be calibrated), the controller selects only the engine as the heat source and controls the engine's heating circuit to provide heat to the passenger compartment.

[0068] 4. If the conditions in step 2 are met but the conditions in step 3 are not met, the controller selects both the engine and the air PTC as heat sources and controls both the engine and the air PTC to heat the crew compartment at the same time. In this case, the air PTC is only used as a supplementary heat source.

[0069] 5. If the conditions in step 2 are not met, the controller will select only the air PTC as the heat source and control the air PTC to heat the crew compartment.

[0070] Air PTC control:

[0071] 1. When only air PTC is selected as the heat source, PID control is performed based on the target outlet air temperature and the actual outlet air temperature. The PID parameters are the preset K1 group (which can be calibrated), and the target power of the air PTC is sent.

[0072] 2. When both the engine and the air PTC are selected as heat sources, the air conditioning unit temperature damper status is considered. When the temperature damper is in the hot end (at this time, it is considered that the target air outlet temperature has not been reached and no air mixing is performed), PID control is performed based on the target air outlet temperature and the actual air outlet temperature. The PID parameters are the preset K2 group (which can be calibrated). The target power of the air PTC is sent. When the temperature damper is not in the hot end (at this time, it is considered that the heat source capacity is excessive, the air conditioning performs air mixing, and the temperature damper is adjusted), the air PTC is turned off and the target power is 0.

[0073] Figure 3 This is a flowchart illustrating a hybrid vehicle heat source selection and control method provided in an embodiment of the present invention. Figure 3 As shown, the method includes:

[0074] In response to a crew cabin heating request signal, obtain the engine circuit coolant temperature T or engine speed N;

[0075] When the engine circuit water temperature T is less than or equal to the temperature threshold T1 or the engine speed N is less than or equal to the speed threshold N1, only electric heating is selected as the heat source, and electric heating is controlled to provide heat to the passenger compartment.

[0076] When the engine circuit water temperature T is greater than the temperature threshold T1 or the engine speed N is greater than the speed threshold N1, the engine and electric heating are selected as heat sources at the same time, and the engine and electric heating are controlled to heat the passenger compartment simultaneously.

[0077] In some embodiments, the step of selecting both the engine and electric heating as heat sources and controlling both the engine and electric heating to simultaneously heat the passenger compartment when the engine circuit water temperature T is greater than the temperature threshold T1 or the engine speed N is greater than the speed threshold N1 includes:

[0078] When the engine circuit water temperature T is greater than the temperature threshold T1 or the engine speed N is greater than the speed threshold N1, and the engine circuit water temperature T is less than or equal to the passenger compartment target outlet air temperature T2 plus the temperature threshold T3, the engine and electric heating are selected as heat sources at the same time, and the engine and electric heating are controlled to heat the passenger compartment at the same time.

[0079] When the engine circuit coolant temperature T is greater than the temperature threshold T1 or the engine speed N is greater than the speed threshold N1, and the engine circuit coolant temperature T is greater than the passenger compartment target outlet air temperature T2 plus the temperature threshold T3, only the engine is selected as the heat source, and the engine is controlled to supply heat to the passenger compartment.

[0080] In some embodiments, the control of electric heating to provide heating for the passenger compartment involves heating the heater core via electric heating, and the heater core heats the air to provide warm air to the passenger compartment.

[0081] In some embodiments, the control of the engine to heat the passenger compartment is to use the heat generated by the engine to heat the heater core through the engine heating circuit, and the heater core heats the air to provide warm air to the passenger compartment. The engine heating circuit includes: engine, heater core, water tank, and engine heating circuit circuit water pump.

[0082] In some embodiments, the electric heating includes: membrane heating and air PTC heating.

[0083] In some embodiments, the step of selecting only electric heating as the heat source and controlling electric heating to provide heat to the passenger compartment when the engine circuit water temperature T is less than or equal to the temperature threshold T1 or the engine speed N is less than or equal to the speed threshold N1 includes:

[0084] The electric heating is achieved by using air PTC heating;

[0085] When the engine circuit water temperature T is less than or equal to the temperature threshold T1 or the engine speed N is less than or equal to the speed threshold N1, only the air PTC is selected as the heat source, and the air PTC is controlled to heat the passenger compartment.

[0086] In some embodiments, the step of selecting only the air PTC as the heat source and controlling the air PTC to heat the passenger compartment when the engine circuit water temperature T is less than or equal to the temperature threshold T1 or the engine speed N is less than or equal to the speed threshold N1 includes:

[0087] like Figure 4 As shown, when only air PTC is selected as the heat source, PID control is performed based on the target air outlet temperature and the actual air outlet temperature. The PID parameters are the preset K1 group, and the target power is sent to the air PTC.

[0088] In some embodiments, the step of selecting both the engine and electric heating as heat sources and controlling both the engine and electric heating to simultaneously heat the passenger compartment when the engine circuit water temperature T is greater than the temperature threshold T1 or the engine speed N is greater than the speed threshold N1 includes:

[0089] The electric heating is achieved by using air PTC heating;

[0090] When the engine circuit coolant temperature T is greater than the temperature threshold T1 or the engine speed N is greater than the speed threshold N1, and the engine circuit coolant temperature T is less than or equal to the passenger compartment target outlet air temperature T2 plus the temperature threshold T3, the engine and air PTC are selected as heat sources at the same time, and the engine and air PTC are controlled to heat the passenger compartment at the same time.

[0091] When the engine circuit coolant temperature T is greater than the temperature threshold T1 or the engine speed N is greater than the speed threshold N1, and the engine circuit coolant temperature T is greater than the passenger compartment target outlet air temperature T2 plus the temperature threshold T3, only the engine is selected as the heat source, and the engine is controlled to supply heat to the passenger compartment.

[0092] In some embodiments, the step of selecting both the engine and air PTC as heat sources and controlling both the engine and air PTC to simultaneously heat the passenger compartment when the engine circuit coolant temperature T is greater than the temperature threshold T1 or the engine speed N is greater than the speed threshold N1, and the engine circuit coolant temperature T is less than or equal to the passenger compartment target outlet air temperature T2 plus the temperature threshold T3, includes:

[0093] like Figure 4 As shown, when both the engine and the air PTC are selected as heat sources, the temperature damper status of the air conditioning unit is obtained.

[0094] When the temperature damper is in the hot end position, PID control is performed based on the target outlet air temperature and the actual outlet air temperature. The PID parameters are the preset K2 group, and the target power is sent to the air PTC.

[0095] When the temperature damper is not at the hot end, the air PTC is shut off, and the target power sent to the air PTC is 0.

[0096] Based on the same inventive concept, embodiments of the present invention also provide a hybrid vehicle heat source selection control system, the system being capable of implementing any of the methods described in the above embodiments, the system comprising:

[0097] The acquisition module is used to acquire the engine circuit water temperature T or engine speed N in response to the crew cabin heating request signal;

[0098] The heat source selection control module is used to select only electric heating as the heat source when the engine circuit water temperature T is less than or equal to the temperature threshold T1 or the engine speed N is less than or equal to the speed threshold N1, and control the electric heating to provide heat to the passenger compartment; it is also used to select both the engine and electric heating as heat sources when the engine circuit water temperature T is greater than the temperature threshold T1 or the engine speed N is greater than the speed threshold N1, and control both the engine and electric heating to provide heat to the passenger compartment at the same time.

[0099] Based on the same inventive concept, embodiments of the present invention also provide an electronic device. Figure 5 This is a structural block diagram of an electronic device provided in an embodiment of the present invention. Figure 5As shown, an embodiment of the present invention provides an electronic device including: one or more processors 101, a memory 102, and one or more I / O interfaces 103. The memory 102 stores one or more programs, which, when executed by the one or more processors, cause the one or more processors to implement any of the methods described in the above embodiments; the one or more I / O interfaces 103 are connected between the processor and the memory, configured to enable information interaction between the processor and the memory.

[0100] The processor 101 is a device with data processing capabilities, including but not limited to a central processing unit (CPU); the memory 102 is a device with data storage capabilities, including but not limited to random access memory (RAM, more specifically SDRAM, DDR, etc.), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), and flash memory (FLASH); the I / O interface (read / write interface) 103 is connected between the processor 101 and the memory 102, and can realize information interaction between the processor 101 and the memory 102, including but not limited to a data bus (Bus).

[0101] In some embodiments, the processor 101, memory 102, and I / O interface 103 are interconnected via bus 104, and thus connected to other components of the computing device.

[0102] In some embodiments, the one or more processors 101 include a field-programmable gate array.

[0103] This invention also provides a computer-readable medium. The computer-readable medium stores a computer program, which, when executed by a processor, implements the steps of any of the methods described in the above embodiments. The computer-readable storage medium may be a volatile or non-volatile computer-readable storage medium.

[0104] Those skilled in the art will understand that all or some of the steps, systems, and apparatuses disclosed above, and their functional modules / units, can be implemented as software, firmware, hardware, or suitable combinations thereof. In hardware implementations, the division between functional modules / units mentioned above does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed collaboratively by several physical components. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit (ASIC). Such software can be distributed on a computer-readable storage medium, which may include computer storage media (or non-transitory media) and communication media (or transient media).

[0105] As is known to those skilled in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information, such as computer-readable program instructions, data structures, program modules, or other data. Computer storage media includes, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), static random access memory (SRAM), flash memory or other memory technologies, portable compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, it is known to those skilled in the art that communication media typically contain computer-readable program instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0106] The computer-readable program instructions described herein can be downloaded from computer-readable storage media to various computing / processing devices, or downloaded via a network, such as the Internet, local area network, wide area network, and / or wireless network, to an external computer or external storage device. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers, and / or edge servers. A network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards them to the computer-readable storage media in the respective computing / processing device.

[0107] The computer program instructions used to perform the operations of this invention may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Smalltalk, C++, etc., and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The computer-readable program instructions may be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or may be connected to an external computer (e.g., via the Internet using an Internet service provider). In some embodiments, electronic circuitry, such as programmable logic circuitry, field-programmable gate arrays (FPGAs), or programmable logic arrays (PLAs), is personalized by utilizing state information from the computer-readable program instructions. This electronic circuitry can execute the computer-readable program instructions to implement various aspects of the invention.

[0108] The computer program product described herein can be implemented specifically through hardware, software, or a combination thereof. In one alternative embodiment, the computer program product is specifically embodied in a computer storage medium; in another alternative embodiment, the computer program product is specifically embodied in a software product, such as a software development kit (SDK), etc.

[0109] Various aspects of the present invention are described herein with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer-readable program instructions.

[0110] These computer-readable program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus to produce a machine such that, when executed by the processor of the computer or other programmable data processing apparatus, they create means for implementing the functions / actions specified in one or more blocks of the flowchart and / or block diagram. These computer-readable program instructions can also be stored in a computer-readable storage medium that causes a computer, programmable data processing apparatus, and / or other device to operate in a particular manner; thus, the computer-readable medium storing the instructions comprises an article of manufacture that includes instructions for implementing aspects of the functions / actions specified in one or more blocks of the flowchart and / or block diagram.

[0111] Computer-readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other device to cause a series of operational steps to be performed on the computer, other programmable data processing apparatus, or other device to produce a computer-implemented process, thereby causing the instructions executed on the computer, other programmable data processing apparatus, or other device to perform the functions / actions specified in one or more boxes of a flowchart and / or block diagram.

[0112] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of the present invention. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of an instruction, which contains one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than those shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

[0113] Example embodiments have been disclosed herein, and while specific terminology has been used, it is for illustrative purposes only and should be construed as such, and is not intended to be limiting. In some instances, it will be apparent to those skilled in the art that features, characteristics, and / or elements described in conjunction with particular embodiments may be used alone, or in combination with features, characteristics, and / or elements described in conjunction with other embodiments, unless otherwise expressly indicated. Therefore, those skilled in the art will understand that various changes in form and detail may be made without departing from the scope of the invention as set forth in the appended claims.

Claims

1. A method for selecting and controlling the heat source of a hybrid vehicle, characterized in that, include: In response to a crew cabin heating request signal, obtain the engine circuit coolant temperature T or engine speed N; When the engine circuit water temperature T is less than or equal to the temperature threshold T1 or the engine speed N is less than or equal to the speed threshold N1, only electric heating is selected as the heat source, and the electric heating is controlled to provide heat to the passenger compartment. When the engine circuit water temperature T is greater than the temperature threshold T1 or the engine speed N is greater than the speed threshold N1, the engine and electric heating are selected as heat sources at the same time, and the engine and electric heating are controlled to heat the passenger compartment simultaneously.

2. The method according to claim 1, wherein, The step of selecting both the engine and electric heating as heat sources and controlling both the engine and electric heating to simultaneously heat the passenger compartment when the engine circuit water temperature T is greater than the temperature threshold T1 or the engine speed N is greater than the speed threshold N1 includes: When the engine circuit water temperature T is greater than the temperature threshold T1 or the engine speed N is greater than the speed threshold N1, and the engine circuit water temperature T is less than or equal to the passenger compartment target outlet air temperature T2 plus the temperature threshold T3, the engine and electric heating are selected as heat sources at the same time, and the engine and electric heating are controlled to heat the passenger compartment at the same time. When the engine circuit coolant temperature T is greater than the temperature threshold T1 or the engine speed N is greater than the speed threshold N1, and the engine circuit coolant temperature T is greater than the passenger compartment target outlet air temperature T2 plus the temperature threshold T3, only the engine is selected as the heat source, and the engine is controlled to supply heat to the passenger compartment.

3. The method according to claim 1 or 2, wherein, The controlled electric heating provides warmth to the passenger compartment by heating the heater core through electric heating, and the heater core heats the air to provide warm air to the passenger compartment.

4. The method according to claim 1 or 2, wherein, The control engine provides heating to the passenger compartment by using the heat generated by the engine to heat the heater core through the engine's heating circuit. The heater core heats the air to provide warm air to the passenger compartment. The engine heating circuit includes: the engine, the heater core, the water tank, and the circuit water pump of the engine heating circuit.

5. The method according to claim 1 or 2, wherein, The electric heating includes: membrane heating and air PTC heating.

6. The method according to claim 1, wherein, When the engine circuit water temperature T is less than or equal to the temperature threshold T1 or the engine speed N is less than or equal to the speed threshold N1, only electric heating is selected as the heat source, and the step of controlling electric heating to provide heat to the crew compartment includes: The electric heating is achieved by using air PTC heating; When the engine circuit water temperature T is less than or equal to the temperature threshold T1 or the engine speed N is less than or equal to the speed threshold N1, only the air PTC is selected as the heat source, and the air PTC is controlled to heat the passenger compartment.

7. The method according to claim 6, wherein, When the engine circuit water temperature T is less than or equal to the temperature threshold T1 or the engine speed N is less than or equal to the speed threshold N1, only the air PTC is selected as the heat source, and the step of controlling the air PTC to heat the passenger compartment includes: When only air PTC is selected as the heat source, PID control is performed based on the target outlet air temperature and the actual outlet air temperature. The PID parameters are the preset K1 group, and the target power is sent to the air PTC.

8. The method according to claim 1, wherein, The step of selecting both the engine and electric heating as heat sources and controlling both the engine and electric heating to simultaneously heat the passenger compartment when the engine circuit water temperature T is greater than the temperature threshold T1 or the engine speed N is greater than the speed threshold N1 includes: The electric heating is achieved by using air PTC heating; When the engine circuit coolant temperature T is greater than the temperature threshold T1 or the engine speed N is greater than the speed threshold N1, and the engine circuit coolant temperature T is less than or equal to the passenger compartment target outlet air temperature T2 plus the temperature threshold T3, the engine and air PTC are selected as heat sources at the same time, and the engine and air PTC are controlled to heat the passenger compartment at the same time. When the engine circuit coolant temperature T is greater than the temperature threshold T1 or the engine speed N is greater than the speed threshold N1, and the engine circuit coolant temperature T is greater than the passenger compartment target outlet air temperature T2 plus the temperature threshold T3, only the engine is selected as the heat source, and the engine is controlled to supply heat to the passenger compartment.

9. The method according to claim 8, wherein, When the engine circuit coolant temperature T is greater than the temperature threshold T1 or the engine speed N is greater than the speed threshold N1, and the engine circuit coolant temperature T is less than or equal to the target air outlet temperature T2 of the passenger compartment plus the temperature threshold T3, the steps of selecting both the engine and the air PTC as heat sources and controlling both the engine and the air PTC to simultaneously heat the passenger compartment include: When both the engine and air PTC are selected as heat sources, the temperature damper status of the air conditioning unit is obtained. When the temperature damper is in the hot end position, PID control is performed based on the target outlet air temperature and the actual outlet air temperature. The PID parameters are the preset K2 group, and the target power is sent to the air PTC. When the temperature damper is not at the hot end, the air PTC is shut off, and the target power sent to the air PTC is 0.

10. A hybrid vehicle heat source selection control system, characterized in that, The system is capable of implementing the method as described in any one of claims 1 to 9, and the system comprises: The acquisition module is used to acquire the engine circuit water temperature T or engine speed N in response to the crew cabin heating request signal; The heat source selection control module is used to select only electric heating as the heat source when the engine circuit water temperature T is less than or equal to the temperature threshold T1 or the engine speed N is less than or equal to the speed threshold N1, and control the electric heating to provide heat to the passenger compartment; it is also used to select both the engine and electric heating as heat sources when the engine circuit water temperature T is greater than the temperature threshold T1 or the engine speed N is greater than the speed threshold N1, and control both the engine and electric heating to provide heat to the passenger compartment at the same time.

11. An electronic device, characterized in that, include: one or more processors; a memory for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the method as described in any one of claims 1 to 9.

12. A computer-readable medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method as described in any one of claims 1 to 9.

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