Method and device for controlling heat pump system of multi-temperature-zone air conditioning box and vehicle-mounted terminal

Abstract

A kind of multi-temperature zone air conditioner box heat pump system control method, device (10) and vehicle terminal (20).The method comprises the following steps: the vehicle terminal (20) can obtain the temperature regulation mode of vehicle, target temperature, temperature adjustment demand of each temperature zone of vehicle and air outlet temperature.The vehicle terminal (20) can adjust the opening value of each temperature zone mixed damper according to temperature regulation mode, target temperature, temperature adjustment demand of each temperature zone and air outlet temperature, so that the air outlet temperature of each temperature zone reaches target temperature.The method improves the precision control to passenger compartment heating / cooling demand.

Description

Technical Field

[0001] This application relates to the field of electronics and electrical appliances, and in particular to a control method, device and vehicle terminal for a heat pump system of a multi-temperature zone air conditioning unit. Background Technology

[0002] With the development of the electric vehicle industry in recent years, more and more heat pump systems are being used. Currently, when there is a heating demand in the passenger compartment, the vehicle can use a heat pump or heater (Positive Temperature Coefficient, PTC) to heat the intake air to the target temperature. The heated air then passes through the heater core to the air outlet. To compensate for heat loss during airflow, the vehicle's heating temperature is usually higher than the target temperature.

[0003] In existing technology, to ensure the outlet air temperature reaches the target temperature, the vehicle can control a mixing damper to mix unheated air into the hot air. The vehicle's heater core or air PTC has a temperature sensor. Heat loss parameters are preset in the vehicle. The vehicle can determine the opening value of the mixing damper based on the air temperature obtained from the temperature sensor and the preset heat loss parameters, thereby adjusting the outlet air temperature.

[0004] However, existing technologies suffer from poor precision in controlling vehicle temperature. Summary of the Invention

[0005] This application provides a heat pump system control method, device, and vehicle terminal for a multi-temperature zone air conditioning unit, to solve the problem of poor accuracy in the temperature control of vehicles in the prior art.

[0006] In a first aspect, this application provides a control method for a heat pump system of a multi-temperature zone air conditioning unit, comprising:

[0007] The vehicle's temperature control method, target temperature, temperature adjustment requirements for each temperature zone of the vehicle, and air outlet temperature are obtained. The air outlet temperature is measured by the temperature sensor at the air outlet corresponding to the temperature zone.

[0008] Based on the temperature control method, the target temperature, the temperature adjustment requirements of each temperature zone, and the outlet air temperature, the opening value of the mixing damper in each temperature zone is adjusted so that the outlet air temperature of each temperature zone reaches the target temperature.

[0009] Optionally, the temperature control method includes one or more of the following: compressor refrigeration, heater heating, motor and / or battery waste heat heating, and compressor heating.

[0010] Optionally, when the temperature control method is any one of compressor cooling, heater heating, or compressor heating, and the compressor speed is greater than the minimum operating speed of the compressor, adjusting the opening value of the mixing damper in each temperature zone according to the temperature control method, the target temperature, the temperature adjustment requirement of each temperature zone, and the outlet air temperature includes:

[0011] Based on the temperature adjustment requirements of each temperature zone, determine the first temperature zone with the largest temperature adjustment requirement.

[0012] Set the opening value of the mixing damper in the first temperature zone to a fixed value;

[0013] Based on the target temperature and the outlet air temperature of other temperature zones besides the first temperature zone, adjust the opening value of the mixing damper in the other temperature zones.

[0014] Optionally, when the temperature control method is heating using waste heat from the motor and / or battery, or heating using the compressor, and the compressor speed is less than or equal to the minimum operating speed of the compressor, adjusting the opening value of the mixing damper in each temperature zone according to the temperature control method, the target temperature, the temperature adjustment requirement of each temperature zone, and the outlet air temperature includes:

[0015] The opening value of the mixing damper in each temperature zone is adjusted according to the target temperature and the outlet air temperature of each temperature zone.

[0016] Optionally, adjusting the opening value of the mixing damper in each temperature zone based on the target temperature and the outlet air temperature of each temperature zone includes:

[0017] The target temperature difference is determined based on the difference between the outlet air temperature and the target temperature;

[0018] The opening value of the mixing damper is determined based on the product of the target temperature difference and the preset parameter.

[0019] Optionally, the temperature adjustment requirement of the temperature zone is determined based on the air volume of the air outlet corresponding to the temperature zone.

[0020] Secondly, this application provides a heat pump system control device for a multi-temperature zone air conditioning unit, comprising:

[0021] The acquisition module is used to acquire the vehicle's temperature control method, target temperature, temperature adjustment requirements for each temperature zone of the vehicle, and air outlet temperature. The air outlet temperature is measured by the temperature sensor of the air outlet corresponding to the temperature zone.

[0022] The control module is used to adjust the opening value of the mixing damper of each temperature zone according to the temperature control method, the target temperature, the temperature adjustment requirement of each temperature zone and the outlet air temperature, so that the outlet air temperature of each temperature zone reaches the target temperature.

[0023] Optionally, the temperature control method includes one or more of the following: compressor refrigeration, heater heating, motor and / or battery waste heat heating, and compressor heating.

[0024] Optionally, when the temperature control method is any one of compressor refrigeration, heater heating, or compressor heating, and the compressor speed is greater than the minimum operating speed of the compressor, the control module is specifically used for:

[0025] Based on the temperature adjustment requirements of each temperature zone, determine the first temperature zone with the largest temperature adjustment requirement.

[0026] Set the opening value of the mixing damper in the first temperature zone to a fixed value;

[0027] Based on the target temperature and the outlet air temperature of other temperature zones besides the first temperature zone, adjust the opening value of the mixing damper in the other temperature zones.

[0028] Optionally, when the temperature control method is heating using waste heat from the motor and / or battery, or heating using the compressor, and the compressor speed is less than or equal to the minimum operating speed of the compressor, the control module is specifically used for:

[0029] The opening value of the mixing damper in each temperature zone is adjusted according to the target temperature and the outlet air temperature of each temperature zone.

[0030] Optionally, the control module is specifically used for:

[0031] The target temperature difference is determined based on the difference between the outlet air temperature and the target temperature;

[0032] The opening value of the mixing damper is determined based on the product of the target temperature difference and the preset parameter.

[0033] Optionally, the temperature adjustment requirement of the temperature zone is determined based on the air volume of the air outlet corresponding to the temperature zone.

[0034] Thirdly, this application provides an in-vehicle terminal, including: a memory and a processor;

[0035] The memory is used to store program instructions; the processor is used to call the program instructions in the memory to execute the heat pump system control method of the multi-temperature zone air conditioning box in the first aspect and any possible design of the first aspect.

[0036] Fourthly, this application provides a vehicle in which each air outlet is equipped with a temperature sensor, and the vehicle is equipped with an on-board terminal as described in the third aspect and any possible design of the third aspect.

[0037] Fifthly, this application provides a readable storage medium storing computer instructions, wherein when at least one processor of an in-vehicle terminal executes the computer instructions, the in-vehicle terminal executes the heat pump system control method of the multi-temperature zone air conditioning unit in the first aspect and any possible design of the first aspect.

[0038] Sixthly, this application provides a computer program product, the computer program product including computer instructions, which, when at least one processor of an in-vehicle terminal executes the computer instructions, enable the in-vehicle terminal to execute the heat pump system control method of the multi-temperature zone air conditioning unit in the first aspect and any possible design of the first aspect.

[0039] The heat pump system control method for a multi-temperature zone air conditioning unit provided in this application acquires the vehicle's temperature control mode, target temperature, temperature adjustment requirements for each temperature zone, and outlet air temperature. Based on these parameters, the opening value of the mixing damper in each temperature zone is adjusted to ensure that the outlet air temperature in each zone reaches the target temperature, thus achieving precise control over the heating demand of the passenger compartment. Furthermore, this application uses a temperature sensor located at the air outlet, replacing the temperature sensor located behind the heater core in existing technologies, reducing costs and achieving energy savings. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of the structure of a heat pump system provided in one embodiment of this application;

[0042] Figure 2 A flowchart illustrating a heat pump system control method for a multi-temperature zone air conditioning unit, provided in one embodiment of this application;

[0043] Figure 3 A schematic diagram of the structure of a heat pump system control device for a multi-temperature zone air conditioning unit provided in an embodiment of this application;

[0044] Figure 4 A schematic diagram of the hardware structure of an in-vehicle terminal provided in an embodiment of this application;

[0045] Figure 5 This is a structural schematic diagram of a vehicle provided in one embodiment of this application. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0047] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be used interchangeably where appropriate. For example, without departing from the scope of this document, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0048] Depending on the context, the word "if" as used here can be interpreted as "when," "when," or "in response to determination."

[0049] Furthermore, as used herein, the singular forms “a,” “one,” and “the” are intended to also include the plural forms, unless the context indicates otherwise.

[0050] It should be further understood that the terms "comprising" or "including" indicate the presence of the said features, steps, operations, elements, components, items, types, and / or groups, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, types, and / or groups.

[0051] The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Therefore, “A, B, or C” or “A, B, and / or C” means “any one of the following: A; B; C; A and B; A and C; B and C; A, B, and C”. Exceptions to this definition occur only when combinations of elements, functions, steps, or operations are inherently mutually exclusive in some way.

[0052] In traditional gasoline-powered vehicles, when the passenger compartment requires heating, the waste heat generated by the engine and the waste heat from the combustion gases can be transferred to heat the air. This heat transfer process is achieved through hot coolant. After absorbing heat from the waste heat, the coolant flows through the heater core in the Heating, Ventilation and Air Conditioning (HVAC) system, thus transferring heat to the air. This heated air then reaches the passenger compartment through the vents, meeting the passenger compartment's heating needs. Because there is always sufficient waste heat in traditional gasoline-powered vehicles, the temperature of the air after passing through the heater core is usually high enough. The on-board terminal needs to install a temperature sensor after the heater core to obtain information about the temperature of the air after it has been heated. Subsequently, the on-board terminal can control the opening value of the mixing damper to mix unheated air with the heated air, ensuring that the air blown out of the vents reaches the target temperature.

[0053] In electric vehicles, the waste heat generated is far less than in gasoline-powered vehicles. With the development of the electric vehicle industry in recent years, more and more heat pump systems are being applied to vehicles. When there is a heating demand in the passenger compartment, the vehicle can use a heat pump or heater (Positive Temperature Coefficient, PTC) to heat the intake air to the desired temperature. Then, the onboard terminal controls the mixing damper to ensure the outlet air temperature reaches the target temperature. The heating temperature of the air conditioning heater core is calculated as follows: assuming the mixing damper is open at 100% full heating, the heating temperature equals the sum of the target temperature and the temperature compensation amount.

[0054] The temperature compensation amount is determined by factors such as ambient temperature and airflow. The heat loss from the heater core to the air outlet varies under different ambient temperatures and airflow conditions. Therefore, the temperature compensation amount calculated based on this heat loss will also differ. Generally, to ensure that the air outlet temperature meets heating requirements, the vehicle terminal will consciously increase the temperature compensation amount to satisfy the heating needs of the passenger compartment.

[0055] To save costs, this application proposes a feasible solution to eliminate the temperature sensor behind the heater core. Furthermore, since the mixing damper is located behind the heater core, if a temperature sensor is installed on the surface of the heater core, its placement will inevitably affect the operation of the mixing damper, thus posing a safety hazard. Simultaneously, to meet the high power consumption demands of electric vehicles, more precise heating demand control strategies are required.

[0056] To address the aforementioned issues, this application proposes a control method for a heat pump system in a multi-temperature zone air conditioning unit. When the passenger compartment only requires cooling, the vehicle terminal can fix the mixing damper in the fully cooling position to ensure the vehicle's cooling needs are met. When the passenger compartment requires heating, and a PTC (Power Transmission Control) system is used for heating, the vehicle terminal can fix the mixing damper in the fully warm position to control the outlet air temperature via the PTC and achieve the target temperature. When the passenger compartment requires heating, and waste heat from the motor and / or battery is used for heating, the vehicle terminal can adjust the opening value of the mixing damper to achieve the target outlet air temperature. When the passenger compartment requires heating, and a compressor is used for heating, the vehicle terminal can control the mixing damper based on the compressor's rotational speed. When the compressor speed is a non-minimum operable speed, such as above 850 rpm, the vehicle terminal can fix the mixing damper in the fully warm position. Furthermore, the vehicle terminal can control the compressor speed to achieve the target outlet air temperature. When the compressor speed remains above the minimum operable speed T seconds and the difference between the outlet air temperature and the target temperature is greater than a first threshold, the vehicle terminal can fix the compressor speed at the minimum operable speed. Here, T is an empirical value, and the minimum operable speed of the compressor can be 850 rpm. Simultaneously, the vehicle terminal can adjust the opening of the mixing damper to achieve the target outlet air temperature. This application not only eliminates the temperature sensor behind the heater core, reducing costs, but also achieves precise control of the passenger compartment heating demand through the vehicle terminal, thus achieving energy savings.

[0057] The technical solutions of this application will be described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0058] Figure 1 A schematic diagram of a heat pump system according to an embodiment of this application is shown. As shown, the dashed lines represent the airflow path. When the incoming air flows through the heater core, it is heated. The heated air then reaches the passenger compartment through the air conditioning vent, achieving heating for the passenger compartment. A temperature sensor located at the air conditioning vent acquires the outlet air temperature as the air passes through it. This temperature sensor uploads the measured outlet air temperature to the vehicle terminal. After acquiring the measured temperature from the temperature sensor, the vehicle terminal controls the mixing damper based on the outlet air temperature and the target temperature. The vehicle terminal can adjust the amount of unheated air mixed in by adjusting the opening value of the mixing damper, thereby adjusting the outlet air temperature.

[0059] In this application, an in-vehicle terminal is used as the executing entity to perform a heat pump system control method for a multi-temperature zone air conditioning unit according to the following embodiments. Specifically, the executing entity can be a hardware device of the in-vehicle terminal, or a software application implementing the following embodiments in the in-vehicle terminal, or a computer-readable storage medium installed with the software application implementing the following embodiments, or code implementing the software application.

[0060] Figure 2 A flowchart illustrating a heat pump system control method for a multi-temperature zone air conditioning unit according to an embodiment of this application is shown. Figure 1 Based on the illustrated embodiments, as Figure 2 As shown, with the vehicle-mounted terminal as the executing entity, the method in this embodiment may include the following steps:

[0061] S101. Obtain the vehicle's temperature control method, target temperature, temperature adjustment requirements for each temperature zone of the vehicle, and air outlet temperature. The air outlet temperature is measured by the temperature sensor at the air outlet corresponding to the temperature zone.

[0062] In this embodiment, the vehicle terminal can acquire the vehicle's temperature control method. This temperature control method can include one or more of the following: compressor cooling, heater heating, motor and / or battery waste heat heating, and compressor heating. Specifically, when the temperature control method is compressor heating, different calculation methods can be used for different cases where the compressor speed is greater than or equal to the minimum operating speed.

[0063] The vehicle terminal can also acquire the target temperature. This target temperature is the air conditioning temperature set by the user through the vehicle terminal. In this embodiment, the temperature adjustment is used to adjust the air outlet temperature so that the air outlet temperature of each air outlet reaches the target temperature, thereby bringing the temperature of the passenger compartment to the target temperature.

[0064] The vehicle terminal can also acquire the temperature adjustment requirements for each temperature zone. Each temperature zone includes at least one air vent. For example, the driver's seat in the passenger compartment can be considered one temperature zone, which may include two air vents on either side of the steering wheel. Similarly, the rear seats in the passenger compartment can be considered another temperature zone, which may include one air vent. The temperature adjustment requirements for different temperature zones can be determined based on the airflow from the air vents in those zones. For instance, when both air vents in the driver's seat temperature zone are fully open, the corresponding temperature adjustment requirement is 2. When only one of the two air vents in the driver's seat temperature zone is open, the corresponding temperature adjustment requirement is 1. When one air vent in the driver's seat temperature zone is closed and the other is partially open, the temperature adjustment requirement is 0.5. Furthermore, when the size of the rear seat air vent is 1.5 times the size of the driver's seat air vent, and the rear seat air vent is open, the temperature adjustment requirement for that temperature zone is 1.5.

[0065] The vehicle terminal can also obtain the air temperature of each air outlet through temperature sensors installed at each air outlet.

[0066] S102. Based on the temperature control method, target temperature, temperature adjustment requirements of each temperature zone, and outlet air temperature, adjust the opening value of the mixing damper in each temperature zone so that the outlet air temperature of each temperature zone reaches the target temperature.

[0067] In this embodiment, the vehicle terminal can calculate the opening value of the mixing damper based on the temperature control method, target temperature, temperature adjustment requirements for each temperature zone, and outlet air temperature obtained in S101. The vehicle terminal can adjust the amount of untreated air that can be mixed into each mixing damper by controlling the opening of the mixing damper. The vehicle terminal can adjust the temperature of the air blown out of the air outlet by adding different amounts of untreated air to the cold / hot air.

[0068] In one example, when a mixing damper in the vehicle corresponds to multiple air outlets, the amount of untreated air entering through the mixing damper determines the outlet temperature of the multiple air outlets corresponding to that mixing damper. In this case, after obtaining the temperatures of the multiple air outlets corresponding to the mixing damper, the vehicle terminal can calculate the opening degree of the mixing damper by comprehensively considering the temperature differences between the multiple air outlets. The specific steps may include:

[0069] Step 1: Determine the weight of each air outlet based on the distance from each air outlet to the warm air core.

[0070] Step 2: Calculate the temperature difference between the outlet temperature and the target temperature based on the outlet temperature of each outlet.

[0071] Step 3: Calculate the final target temperature difference based on the weight and temperature difference of each air outlet.

[0072] Step 4: Determine the opening value of the mixing damper based on the product of the target temperature difference and the preset parameters.

[0073] In another example, each air outlet in each temperature zone of the vehicle can correspond to a mixing damper. This mixing damper mixes untreated air with the air blowing from that outlet, thereby achieving the target temperature for the outlet's airflow. In this case, the vehicle terminal can calculate the opening value of the mixing damper for each outlet based on its airflow temperature. Specific steps may include:

[0074] Step 1: Calculate the temperature difference between the outlet temperature and the target temperature based on the outlet temperature of each outlet.

[0075] Step 2: Determine the opening value of the mixing damper based on the product of the temperature difference at the air outlet and the preset parameters.

[0076] In this embodiment, in addition to directly calculating the opening value of the mixing damper, it is also necessary to adjust the opening value of the mixing damper according to the temperature control method. Different configurations of the opening value under different temperature control methods can be illustrated in the following examples.

[0077] In one example, when the temperature control method is compressor cooling, heater heating, or compressor heating, and the compressor speed is greater than the minimum operating speed of the compressor, the specific calculation method for the opening value includes:

[0078] Step 1: Based on the temperature adjustment requirements of each temperature zone, determine the first temperature zone with the largest temperature adjustment requirement.

[0079] In this step, the vehicle-mounted terminal can acquire the airflow volume for each temperature zone. Based on this airflow volume, the vehicle-mounted terminal can determine the temperature adjustment requirement for each temperature zone. The vehicle-mounted terminal can compare the temperature adjustment requirements of each temperature zone to determine the temperature zone with the highest temperature adjustment requirement. The vehicle-mounted terminal can then designate this temperature zone with the highest temperature adjustment requirement as the first temperature zone. Furthermore, all temperature zones other than the first temperature zone are designated as other temperature zones.

[0080] Step 2: Set the opening value of the mixing damper in the first temperature zone to a fixed value.

[0081] In this step, the fixed value includes 0 and 100%. When the temperature control mode is heating, the fixed value can be set to 100%, which is full heating. When the temperature control mode is cooling, the fixed value can be set to 0, which is full cooling.

[0082] Step 3: Adjust the opening value of the mixing damper in other temperature zones according to the target temperature and the outlet air temperature of other temperature zones besides the first temperature zone.

[0083] In this step, the vehicle terminal can calculate the opening value of the damper for each temperature zone by using the same method as in the previous example, which calculates the opening value of the mixing damper based on the outlet air temperature and the target temperature.

[0084] For example, when the passenger compartment only requires cooling, the temperature control method is compressor cooling. The on-board terminal can determine the temperature zone with the highest cooling demand in the multi-temperature zone air conditioning unit as the first temperature zone. The on-board terminal can fix the mixing damper corresponding to this first temperature zone in the fully cooled position. At the same time, for the mixing dampers of other temperature zones, the on-board terminal adjusts and controls their opening value according to the outlet air temperature and target temperature of the other temperature zones.

[0085] For example, when the passenger compartment requires heating and a PTC heater is used exclusively, the vehicle terminal can designate the temperature zone with the highest heating demand in the multi-zone climate control unit as the first temperature zone. The vehicle terminal can then fix the mixing damper corresponding to this first temperature zone in the full-heat position. Simultaneously, the vehicle terminal controls the PTC output power of this first temperature zone to ensure the corresponding air outlet temperature reaches the target air outlet temperature. For the mixing dampers in other temperature zones, the vehicle terminal adjusts and controls their opening values ​​based on the air outlet temperatures and target temperatures of those zones.

[0086] For example, when the passenger compartment requires heating and both a PTC and a compressor are used simultaneously, the vehicle terminal can designate the temperature zone with the highest heating demand in the multi-zone climate control unit as the first temperature zone. The vehicle terminal can then fix the mixing damper corresponding to this first temperature zone in the full-warm position. Simultaneously, the compressor operates at its set upper speed limit under this condition, and the vehicle terminal can control the PTC output power to ensure the outlet air temperature corresponding to this first temperature zone reaches the target outlet air temperature. For the mixing dampers in other temperature zones, the vehicle terminal adjusts and controls their opening values ​​based on the outlet air temperature and the target temperature of those zones.

[0087] For example, when the passenger compartment requires heating and the compressor is used alone to heat the passenger compartment, if the compressor speed is not the minimum operating speed (e.g., higher than 850 rpm), the vehicle terminal can determine the temperature zone with the highest heating demand in the multi-temperature zone air conditioning unit as the first temperature zone. The vehicle terminal can fix the mixing damper corresponding to this first temperature zone in the full heating position. The vehicle terminal can control the compressor speed to ensure that the outlet air temperature corresponding to this first temperature zone reaches the target outlet air temperature. Simultaneously, for the mixing dampers of other temperature zones, the vehicle terminal adjusts and controls their opening values ​​based on the outlet air temperature of those other temperature zones and the target temperature.

[0088] In another example, when the temperature control method is heating using motor and / or battery waste heat or compressor heating, and the compressor speed is less than or equal to the minimum operating speed of the compressor, the opening value of the mixing damper can be determined according to the target temperature and the outlet air temperature of each temperature zone, thereby completing the adjustment of the mixing damper for each temperature zone. Here, the compressor speed being less than or equal to the minimum operating speed of the compressor can be 850 rpm.

[0089] For example, when the passenger compartment requires heating and the waste heat from the motor and / or battery is used to heat the passenger compartment, the on-board terminal does not need to directly limit the opening of any mixing damper. The opening value of each mixing damper in the vehicle can be calculated from the outlet air temperature and the target temperature, thereby realizing the adjustment of the opening of each mixing damper so that the outlet air temperature of each outlet reaches the target temperature.

[0090] For example, when the passenger compartment requires heating and only the compressor is used to heat it, if preset conditions are met, the compressor speed is fixed at the lowest operable speed, and the opening of any mixing damper is not directly limited. The opening value of each mixing damper in the vehicle can be calculated using the outlet air temperature and the target temperature, thereby adjusting the opening of each mixing damper to ensure that the outlet air temperature reaches the target temperature. The preset conditions may include the compressor speed exceeding a first threshold for a duration, and the difference between the outlet air temperature and the target temperature being greater than a second threshold.

[0091] The heat pump system control method for a multi-temperature zone air conditioning unit provided in this application allows the vehicle terminal to acquire the vehicle's temperature control mode, target temperature, temperature adjustment requirements for each temperature zone, and outlet air temperature. The vehicle terminal can adjust the opening value of the mixing damper for each temperature zone based on the temperature control mode, target temperature, temperature adjustment requirements for each temperature zone, and outlet air temperature, so that the outlet air temperature of each temperature zone reaches the target temperature. This application combines two methods: directly limiting the opening value of the mixing damper based on the temperature control mode, and calculating the opening value of the mixing damper based on the difference between the outlet air temperature and the target temperature, to achieve precise control of the heating / cooling needs of the passenger compartment. Furthermore, this application uses a temperature sensor located at the air outlet instead of the temperature sensor located behind the heater core in the prior art, reducing costs and achieving energy savings.

[0092] Figure 3 This application provides a schematic diagram of the structure of a heat pump system control device for a multi-temperature zone air conditioning unit according to an embodiment of the present application. Figure 3 As shown, the heat pump system control device 10 of the multi-temperature zone air conditioning unit in this embodiment is used to implement the operation corresponding to the vehicle terminal in any of the above method embodiments. The heat pump system control device 10 of the multi-temperature zone air conditioning unit in this embodiment includes:

[0093] The acquisition module 11 is used to acquire the vehicle's temperature control method, target temperature, temperature adjustment requirements for each temperature zone of the vehicle, and air outlet temperature. The air outlet temperature is measured by the temperature sensor at the air outlet corresponding to the temperature zone.

[0094] The control module 12 is used to adjust the opening value of the mixing damper of each temperature zone according to the temperature control method, target temperature, temperature adjustment demand of each temperature zone and outlet air temperature, so that the outlet air temperature of each temperature zone reaches the target temperature.

[0095] In one example, the temperature control method includes one or more of the following: compressor refrigeration, heater heating, motor and / or battery waste heat heating, and compressor heating.

[0096] In one example, when the temperature control method is compressor cooling, heater heating, or compressor heating, and the compressor speed is greater than the minimum operating speed of the compressor, the control module 12 is specifically used for:

[0097] Based on the temperature adjustment requirements of each temperature zone, the first temperature zone with the largest temperature adjustment requirement is determined.

[0098] Set the opening value of the mixing damper in the first temperature zone to a fixed value.

[0099] Adjust the opening value of the mixing damper in other temperature zones based on the target temperature and the outlet air temperature in other temperature zones besides the first temperature zone.

[0100] In one example, when the temperature control method is heating using waste heat from the motor and / or battery, or heating using the compressor, and the compressor speed is less than or equal to the minimum operating speed of the compressor, the control module 12 is specifically used for:

[0101] Adjust the opening value of the mixing damper for each temperature zone based on the target temperature and the outlet air temperature of each temperature zone.

[0102] In one example, control module 12 is specifically used for:

[0103] The target temperature difference is determined based on the difference between the outlet air temperature and the target temperature.

[0104] The opening value of the mixing damper is determined based on the product of the target temperature difference and the preset parameters.

[0105] In one example, the temperature adjustment requirement for a temperature zone is determined based on the airflow from the corresponding air outlet of that temperature zone.

[0106] The heat pump system control device 10 of the multi-temperature zone air conditioning box provided in this application embodiment can execute the above method embodiment. Its specific implementation principle and technical effect can be found in the above method embodiment, and will not be repeated here.

[0107] Figure 4 This diagram illustrates the hardware structure of a vehicle-mounted terminal according to an embodiment of this application. Figure 4 As shown, the vehicle terminal 20 is used to implement the operation corresponding to the vehicle terminal in any of the above method embodiments. The vehicle terminal 20 in this embodiment may include: a memory 21, a processor 22 and a communication interface 24.

[0108] The memory 21 is used to store computer programs. The memory 21 may include high-speed random access memory (RAM) and may also include non-volatile memory (NVM), such as at least one disk storage device, and may also be a USB flash drive, external hard drive, read-only memory, disk or optical disc, etc.

[0109] Processor 22 is used to execute the computer program stored in the memory to implement the heat pump system control method of the multi-temperature zone air conditioning unit in the above embodiments. For details, please refer to the relevant descriptions in the foregoing method embodiments. The processor 22 can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), etc. A general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in this invention can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules within the processor.

[0110] Alternatively, the memory 21 can be either standalone or integrated with the processor 22.

[0111] When the memory 21 is a device independent of the processor 22, the vehicle terminal 20 may also include a bus 23. This bus 23 is used to connect the memory 21 and the processor 22. The bus 23 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of illustration, the buses shown in the accompanying drawings are not limited to a single bus or a single type of bus.

[0112] Communication interface 24 is used to acquire temperature sensor data from each air outlet of the vehicle, and to send control commands to the mixing damper to instruct it to open and allow airflow according to a calculated opening value, thereby ensuring that the outlet air temperature of each temperature zone reaches the target temperature.

[0113] The vehicle terminal provided in this embodiment can be used to execute the above-described heat pump system control method for multi-temperature zone air conditioning boxes. Its implementation method and technical effect are similar, and will not be described again in this embodiment.

[0114] Figure 5 A schematic diagram of the structure of a vehicle provided in an embodiment of this application is shown. Figure 5 As shown, the vehicle 30 includes a temperature sensor 31 installed at each air outlet and, as shown, ... Figure 4 The vehicle-mounted terminal 32 shown.

[0115] This application also provides a computer-readable storage medium storing computer instructions, which, when executed by a processor, are used to implement the methods provided in the various embodiments described above.

[0116] The computer-readable storage medium can be a computer storage medium or a communication medium. A communication medium includes any medium that facilitates the transfer of a computer program from one location to another. A computer storage medium can be any available medium accessible to a general-purpose or special-purpose computer. For example, a computer-readable storage medium is coupled to a processor, enabling the processor to read information from and write information to the computer-readable storage medium. Of course, the computer-readable storage medium can also be a component of the processor. The processor and the computer-readable storage medium can reside in an Application Specific Integrated Circuit (ASIC). Alternatively, the ASIC can reside in a user equipment. Of course, the processor and the computer-readable storage medium can also exist as discrete components in a communication device.

[0117] Specifically, the computer-readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as Static Random-Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The storage medium can be any available medium accessible to general-purpose or special-purpose computers.

[0118] This application also provides a computer program product including computer instructions stored in a computer-readable storage medium. At least one processor of the device can read the computer instructions from the computer-readable storage medium, and the at least one processor executes the computer instructions to cause the device to perform the methods provided in the various embodiments described above.

[0119] In the several 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 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 through some interfaces; the indirect coupling or communication connection between apparatuses or modules may be electrical, mechanical, or other forms.

[0120] The modules can be physically separate, for example, installed in different locations within a single device, installed on different devices, distributed across multiple network units, or distributed across multiple processors. Alternatively, the modules can be integrated, for example, installed in the same device, or integrated into a single codebase. The modules can exist in hardware form, software form, or a combination of both. This application can select some or all of the modules to achieve the objectives of this embodiment based on actual needs.

[0121] When the various modules are implemented as integrated software functional modules, they can be stored in a computer-readable storage medium. The aforementioned software functional modules, stored in a storage medium, include several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute some steps of the methods of the various embodiments of this application.

[0122] It should be understood that although the steps in the flowcharts of the above embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some of the steps in the figures may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the sub-steps or stages of other steps.

[0123] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A control method for a heat pump system of a multi-temperature zone air conditioning unit, characterized in that, The method includes: The system acquires the vehicle's temperature control method, target temperature, temperature adjustment requirements for each temperature zone of the vehicle, and outlet air temperature. The outlet air temperature is measured by a temperature sensor at the air outlet corresponding to the temperature zone. The temperature control method includes one or more of the following: compressor cooling, heater heating, motor and / or battery waste heat heating, and compressor heating. The temperature adjustment requirements for each temperature zone are determined based on the airflow from the air outlet corresponding to that temperature zone. When the temperature control method is any one of compressor refrigeration, heater heating, compressor heating and the compressor speed is greater than the minimum operating speed of the compressor, the first temperature zone with the largest temperature adjustment demand is determined according to the temperature adjustment demand of each temperature zone. Set the opening value of the mixing damper in the first temperature zone to a fixed value; Based on the target temperature and the outlet air temperature of other temperature zones besides the first temperature zone, adjust the opening value of the mixing damper in the other temperature zones. To ensure that the outlet air temperature of each of the temperature zones reaches the target temperature; When the temperature control method is heating by motor and / or battery waste heat or heating by compressor and the compressor speed is less than or equal to the minimum operating speed of the compressor, the opening value of the mixing damper of each temperature zone is adjusted according to the target temperature and the outlet air temperature of each temperature zone so that the outlet air temperature of each temperature zone reaches the target temperature.

2. The method according to claim 1, characterized in that, The step of adjusting the opening value of the mixing damper in each temperature zone according to the target temperature and the outlet air temperature of each temperature zone includes: The target temperature difference is determined based on the difference between the outlet air temperature and the target temperature; The opening value of the mixing damper is determined based on the product of the target temperature difference and the preset parameters.

3. A control device for a heat pump system of a multi-temperature zone air conditioning unit, characterized in that, The device includes: The acquisition module is used to acquire the vehicle's temperature control method, target temperature, temperature adjustment requirements for each temperature zone of the vehicle, and outlet air temperature; the temperature control method includes one or more of the following: compressor cooling, heater heating, motor and / or battery waste heat heating, and compressor heating; the temperature adjustment requirements for each temperature zone are determined based on the air volume of the corresponding air outlet of the temperature zone. The control module is used to adjust the opening value of the mixing damper of each temperature zone according to the temperature control method, the target temperature, the temperature adjustment requirement of each temperature zone and the outlet air temperature, so that the outlet air temperature of each temperature zone reaches the target temperature. When the temperature control method is any one of compressor refrigeration, heater heating, compressor heating and compressor speed is greater than the minimum operating speed of the compressor, the control module is specifically used to determine the first temperature zone with the largest temperature adjustment demand based on the temperature adjustment demand of each temperature zone. Set the opening value of the mixing damper in the first temperature zone to a fixed value; Based on the target temperature and the outlet air temperature of other temperature zones besides the first temperature zone, adjust the opening value of the mixing damper in the other temperature zones; When the temperature control method is heating by motor and / or battery waste heat or heating by compressor and the compressor speed is less than or equal to the minimum operating speed of the compressor, the control module is specifically used to adjust the opening value of the mixing damper of each temperature zone according to the target temperature and the outlet air temperature of each temperature zone.

4. A vehicle-mounted terminal, characterized in that, The vehicle-mounted terminal includes: a memory and a processor; The memory is used to store computer instructions; the processor is used to implement the heat pump system control method of the multi-temperature zone air conditioning box as described in any one of claims 1-2 according to the computer instructions stored in the memory.

5. A vehicle, characterized in that, Each air outlet of the vehicle is equipped with a temperature sensor, and the vehicle is equipped with the vehicle-mounted terminal as described in claim 4.

6. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions, which, when executed by a processor, are used to implement the heat pump system control method for a multi-temperature zone air conditioning unit as described in any one of claims 1-2.

7. A computer program product, characterized in that, The computer program product includes computer instructions, which, when executed by a processor, implement the heat pump system control method for a multi-temperature zone air conditioning unit as described in any one of claims 1-2.

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