A vehicle PTC heating control method and device, electronic equipment and storage medium

Abstract

The application provides a vehicle PTC heating control method and device, electronic equipment and storage medium, the method comprises the following steps: obtaining the air intake air volume and heating parameters; determining the first heating power according to the air intake air volume and the heating parameters; optimizing the first heating power according to the first heating power and the preset air heating description information, obtaining the second heating power; determining the first preset time according to the second heating power and the preset air heating description information; heating control is carried out according to the second heating power; if the time of heating control according to the second heating power reaches the first preset time, heating control is carried out according to the first heating power. The method provided by the application can determine the first heating power according to the air intake air volume and the heating parameters, which can effectively improve the accuracy of power calculation; and the first heating power can be optimized according to the first heating power and the preset air heating description information, which can effectively improve the speed and stability of system control.

Description

Technical Field

[0001] This application relates to the field of vehicle heating technology, and in particular to a vehicle PTC heating control method, device, electronic equipment and storage medium. Background Technology

[0002] Currently, electric vehicles generally use positive temperature coefficient (PTC) resistors to heat the air to achieve the purpose of heating. The control method of PTC air heating is that the thermal management controller sends a power request to the PTC module. The thermal management controller simultaneously collects the temperature of the air temperature sensor located on the side of the heater core, and dynamically adjusts the power request through negative feedback control to achieve precise temperature control.

[0003] Due to the physical characteristics of PTC heating air, its heating process is relatively slow. Therefore, when using negative feedback control in dynamic situations, the control process is often very slow and may even result in overshoot. Summary of the Invention

[0004] To address the aforementioned technical problems, this application discloses a vehicle PTC heating control method, comprising:

[0005] Obtain the intake air volume and heating parameters;

[0006] The first heating power is determined based on the air intake volume and the heating parameters;

[0007] The first heating power is optimized based on the first heating power and the preset air heating description information to obtain the second heating power;

[0008] A first preset duration is determined based on the second heating power and the preset air heating description information; the first preset duration is the duration for heating control based on the second heating power.

[0009] Heating control is performed based on the second heating power;

[0010] If the duration of heating control based on the second heating power reaches the first preset duration, then heating control is performed based on the first heating power.

[0011] Furthermore, the heating parameters include: target outlet air temperature, heat exchanger temperature, evaporation temperature, and vehicle interior humidity.

[0012] Further, determining the first heating power based on the intake air volume and the heating parameters includes:

[0013] The target outlet air enthalpy value is determined based on the target outlet air temperature and the vehicle interior humidity.

[0014] The actual inlet air enthalpy value is determined based on the evaporation temperature and the in-vehicle humidity.

[0015] The equivalent air temperature is determined based on the inlet air volume and the heat exchanger temperature.

[0016] The mass air volume is determined based on the equivalent air temperature.

[0017] The first heating power is determined based on the target outlet air enthalpy, the actual inlet air enthalpy, and the mass air volume.

[0018] Further, the step of optimizing the first heating power based on the first heating power and preset air heating description information to obtain the second heating power includes:

[0019] The first time to reach a steady state is estimated based on the first heating power and the preset air heating description information;

[0020] When the first duration is greater than the second preset duration, the first heating power is increased by a set multiple to obtain the second heating power.

[0021] Further, a first preset duration is determined based on the second heating power and the preset air heating description information; including:

[0022] The second duration for reaching a steady state is determined based on the second heating power and the preset air heating description information;

[0023] The first preset duration is determined based on the second duration.

[0024] Further, after the heating control step based on the second heating power, the following steps are included:

[0025] Obtain the target outlet air temperature, the current outlet air temperature, and the current heating power;

[0026] The current power compensation value is obtained based on the target air outlet temperature, the current air outlet temperature, and the current heating power;

[0027] The third heating power is obtained based on the current power compensation value and the current heating power;

[0028] Heating control is performed based on the third heating power.

[0029] Furthermore, the intake air volume is obtained, including by obtaining the intake air volume through the air mixing ratio, blower air volume and air outlet mode.

[0030] A second aspect of this application provides a vehicle PTC heating control device, comprising:

[0031] The acquisition module is used to acquire the intake air volume and heating parameters;

[0032] A power calculation module is used to determine the first heating power based on the air intake volume and the heating parameters;

[0033] A power optimization module is used to optimize the first heating power based on the first heating power and preset air heating description information to obtain a second heating power;

[0034] The determining module is used to determine a first preset duration based on the second heating power and the preset air heating description information; the first preset duration is the duration of heating control based on the second heating power;

[0035] The first heating control module is used to control the heating according to the second heating power;

[0036] The second heating control module is configured to perform heating control based on the first heating power if it is determined that the duration of heating control based on the second heating power reaches the first preset duration.

[0037] A third aspect of this application provides an electronic device, the electronic device including a processor and a memory, the memory storing at least one instruction, at least one program, code set or instruction set, the at least one instruction, the at least one program, the code set or instruction set being loaded and executed by the processor to implement the vehicle PTC heating control method.

[0038] A fourth aspect of this application provides a computer storage medium storing at least one instruction or at least one program, wherein the at least one instruction or at least one program is loaded and executed by a processor to implement the vehicle PTC heating control method.

[0039] By adopting the above technical solution, this application has the following beneficial effects:

[0040] The vehicle PTC heating control method provided by this invention can determine the first heating power based on the air intake volume and heating parameters, which can effectively improve the accuracy of power calculation; and can optimize the first heating power based on the first heating power and preset air heating description information, which can effectively improve the speed and stability of system control. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram illustrating the implementation environment of a vehicle PTC heating control method according to an embodiment of this application.

[0043] Figure 2 This is a schematic flowchart of a vehicle PTC heating control method according to an embodiment of this application.

[0044] Figure 3 This is a heating control curve diagram for an embodiment of this application using a first heating power.

[0045] Figure 4 This is an optimized heating control curve diagram of an embodiment of this application.

[0046] Figure 5 This is a schematic diagram of a vehicle PTC heating control device according to an embodiment of this application. Detailed Implementation

[0047] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0048] The term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of this application. In the description of the embodiments of this application, it should be understood that the terms "upper," "lower," "top," "bottom," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein.

[0049] This application provides a vehicle PTC heating control method. First, this application discloses an implementation environment for a vehicle PTC heating control method in a feasible embodiment.

[0050] See Figure 1 The implementation environment includes: client 101 and server 102.

[0051] Client 101 may include physical devices such as smartphones, tablets, laptops, digital assistants, smart wearable devices, and in-vehicle terminals, or software running on the physical device, such as applications with vehicle control functions. Client 101 can communicate with server 102 based on browser / server (B / S) or client / server (C / S) mode.

[0052] Client 101 can send a vehicle PTC heating control request to server 102. Server 102 can obtain the air intake volume and heating parameters; determine a first heating power based on the air intake volume and heating parameters; optimize the first heating power based on the first heating power and preset air heating description information to obtain a second heating power; determine a first preset duration based on the second heating power and preset air heating description information; the first preset duration is the duration of heating control based on the second heating power; heating control is performed based on the second heating power; if the duration of heating control based on the second heating power reaches the first preset duration, then heating control is performed based on the first heating power.

[0053] Server 102 may include a stand-alone server, a distributed server, or a server cluster consisting of multiple servers.

[0054] The following describes a specific embodiment of a vehicle PTC heating control method according to this application. Figure 2 This is a flowchart illustrating a vehicle PTC heating control method according to an embodiment of this application. The method can be implemented as follows: Figure 1 The server in the implementation environment is the execution entity. This specification provides method operation steps as shown in the embodiments or flowcharts, but based on conventional or non-inventive labor, more or fewer operation steps may be included. The order of steps listed in the embodiments is merely one of many possible execution orders and does not represent the only execution order. In actual system or server product execution, the methods shown in the embodiments or drawings can be executed sequentially or in parallel (e.g., in a parallel processor or multi-threaded processing environment). Specifically, as shown in the embodiments or drawings... Figure 2 As shown, the method may include the following steps:

[0055] S201: Obtain the intake air volume and heating parameters; in this embodiment of the application, the heating parameters include: target outlet air temperature, heat exchanger temperature, evaporation temperature and vehicle interior humidity.

[0056] In this embodiment of the application, obtaining the intake air volume may include: obtaining the intake air volume through the air mixing ratio, the blower air volume, and the air outlet mode. The intake air volume can be the air volume passing through the heater core, wherein the intake air volume can be calculated through the air mixing ratio, the blower air volume, and the air outlet mode; the calculation method can be as follows: calibrating the blower air volume at different speeds under different air mixing ratios (e.g., 100% / 50% / 0%) to form a first calibration vector table.

[0057] When the input signal mixing ratio and blower duty cycle are obtained, the estimated intake air volume can be obtained by interpolating the first calibration vector table.

[0058] Considering the differences in air volume under different air outlet modes, a second calibration vector table is formed through calibration to compensate for the estimated air volume under different air outlet modes, thus obtaining the compensated estimated air volume.

[0059] To prevent signal abrupt changes, the compensated estimated air volume is filtered and limited to obtain the desired intake air volume, where the unit of intake air volume can be m³ / s. 3 / h.

[0060] S202: Determine the first heating power based on the intake air volume and heating parameters; in this embodiment, determining the first heating power based on the intake air volume and heating parameters includes:

[0061] The target outlet air enthalpy value is determined based on the target outlet air temperature and the humidity inside the vehicle;

[0062] The actual enthalpy of the inlet air is determined based on the evaporation temperature and the humidity inside the vehicle.

[0063] The equivalent air temperature is determined based on the intake air volume and the heat exchanger temperature.

[0064] Determine the mass air volume based on the equivalent air temperature;

[0065] The first heating power is determined based on the target outlet air enthalpy, the actual inlet air enthalpy, and the mass air volume.

[0066] In this embodiment of the application, the first heating power value = (target outlet air enthalpy value - actual inlet air enthalpy value) * mass air volume.

[0067] The target outlet air enthalpy value can be obtained based on the target outlet air temperature and the vehicle interior humidity. The vehicle interior humidity can be obtained from the value of the vehicle interior humidity sensor. If no sensor is configured, the humidity will be set to 60% by default. During actual road testing, if there is a deviation in humidity, it can be compensated through a negative feedback loop.

[0068] In this embodiment, the actual inlet air enthalpy is determined based on the evaporation temperature and the vehicle interior humidity. Due to the specific structure of the heating, ventilation, and air conditioning (HVAC) system, the air passes through the evaporator before passing through the heater core; therefore, the evaporation temperature can be used to replace the inlet air temperature.

[0069] In this embodiment, the mass air volume can be determined based on the equivalent temperature; the equivalent air temperature can be determined based on the inlet air volume and the heat exchanger temperature; specifically, the inlet air volume is first obtained, and the equivalent air temperature is calculated based on the evaporation temperature and the actual heat exchanger temperature, using the following formula:

[0070] Equivalent air temperature = actual heat exchanger temperature * outlet air temperature ratio + evaporation temperature * (1 - outlet air temperature ratio); where the outlet air temperature ratio is calibrated by the inlet air volume to form a third calibration vector table. This third calibration vector table does not have actual physical meaning, but by adjusting this table, the deviation of the lamp effect air temperature output under different air volumes can be adjusted.

[0071] After obtaining the equivalent air temperature, the air density at the current equivalent air temperature is obtained by consulting the air property table; then, the volumetric air volume is converted into the mass air volume based on the air density value.

[0072] S203: Optimize the first heating power based on the first heating power and preset air heating description information to obtain a second heating power; wherein, optimizing the first heating power based on the first heating power and preset air heating description information to obtain the second heating power may include:

[0073] The first time to reach steady state is estimated based on the first heating power and the preset air heating description information;

[0074] When the first duration is longer than the second preset duration, the first heating power is increased by a set multiple to obtain the second heating power.

[0075] In this embodiment, the preset air heating description information can be a simulated heating control curve. Based on the heating control curve and the first heating power, a first time to reach steady state can be calculated. If this time is longer than a second time, i.e., the time is relatively long, the first heating power is increased by a set factor to obtain a second heating power. Using the second heating power for heating can effectively shorten the heating time. Furthermore, by estimation, the increase is canceled before the system experiences overshoot risk, to ensure system stability.

[0076] In this embodiment, the preset air heating description information can also be a PTC air heating response model; this model can include a simulated heating control curve; the first heating power is optimized through this PTC air heating response model, and limits and filters are applied to finally output the second heating power request. The PTC air heating response model can be: Pout(t+1) = APout(t) + (1-A)Pin(t); where: Pout(t+1) is the output power value at time t+1; Pout(t) is the output power value at time t; Pin(t) is the input power value at time t; A is a coefficient term, determined by the fourth calibration vector table corresponding to different air volumes. The model will continue to calculate until Pout(t+1) reaches more than 90% of Pin(t), that is, the target output power is basically achieved. The results of each calculation are recorded to obtain an internal estimation sequence, and the cumulative result X of the number of calculations is used as an internal parameter. The accumulated result X is converted into a gain G using a fifth calibration vector table. This gain is applied to the input first heating power to obtain an optimized second heating power, which serves as the output of this module: Second heating power = First heating power * G. The second heating power is then recalculated using the response model to obtain an optimized response sequence. When Pout(t+1) in the optimized response sequence reaches more than 90% of Pin(t), the gain G immediately becomes 1, meaning no further gain is applied. The purpose of this model is to estimate the heating time required to reach the target warm air temperature by simulating the air heating process. If the heating time is too long, the heating power will be appropriately increased to accelerate the air heating process.

[0077] S204: Determine a first preset duration based on the second heating power and preset air heating description information; the first preset duration is the duration for heating control based on the second heating power;

[0078] In this embodiment of the application, a first preset duration is determined based on a second heating power and preset air heating description information; including:

[0079] The second duration for reaching a steady state is determined based on the second heating power and the preset air heating description information; the first preset duration is determined based on the second duration.

[0080] The air heating description information can be a simulated heating control curve. Based on the second heating power and the simulated control curve, the time required to reach a steady state using the second heating power is calculated. A first preset duration is determined based on this time. If feasible, the first preset duration can be less than the calculated second duration required to reach a steady state using the second heating power. After the power is increased, the actual time required to reach a steady state using the second heating power may be shorter than the theoretically calculated second duration. Therefore, using the first preset duration according to actual needs, which is less than the theoretically calculated second duration, can avoid the risk of system overshoot and ensure system stability.

[0081] Figure 3 The heating control curve, which is not optimized using a response model and is controlled by the first heating power, is from... Figure 3 As can be seen, due to the hysteresis of the system, the heating process is relatively slow and the time to reach steady state is relatively long. Figure 4 The heating control curve obtained using this response model is shown. After optimization of the response model, the power request is increased in the initial period, using a second heating power to accelerate the system's heating rate. When the system approaches the target temperature, it switches to the first heating power, shortening the time to reach steady state and avoiding overshoot risk, thus ensuring system stability. The method provided in this application considers system hysteresis, thus optimizing power and anticipating the risk of control deviation, canceling the gain at an appropriate time to stabilize the system.

[0082] S205: Heating control is performed based on the second heating power;

[0083] S206: If the duration of heating control based on the second heating power reaches the first preset duration, then heating control is performed based on the first heating power.

[0084] In this embodiment, when the heating control time based on the second heating power reaches the first preset time, the heating with the second heating power is stopped, and the heating with the first heating power, which has a lower power, is used instead. This can ensure faster air heating while avoiding the risk of system overshoot.

[0085] In this embodiment of the application, after the heating control step based on the second heating power, the following steps may be included:

[0086] Obtain the target outlet air temperature, the current outlet air temperature, and the current heating power;

[0087] The current power compensation value is obtained based on the target outlet air temperature, the current outlet air temperature, and the current heating power.

[0088] The third heating power is obtained based on the current power compensation value and the current heating power;

[0089] Heating control is performed based on the third heating power. The above steps can be performed as follows:

[0090] The preset air heating description information can be the response model of PTC air heating. First, the length Kmod of the response sequence is calculated using the obtained optimized response sequence. Within Kmod+Kc iterations, the power request output by the corresponding model is used. Kc is the compensation for Kmod, which can be obtained through a sixth calibration vector table based on Kmod. After Kmod iterations, the current power compensation value is obtained based on the target outlet air temperature, the current outlet air temperature, and the current heating power. The current power compensation value = (target outlet air temperature - actual outlet air temperature) * mass air volume. The third heating power can be the sum of the current heating power and the current power compensation value; that is, the compensation is calculated by setting the difference between the target outlet air temperature and the actual current outlet air temperature, which is equivalent to performing negative feedback fine-tuning on the system. In this embodiment, the third heating power can be the power output after limiting the sum of the current heating power and the current power compensation value and output filtering.

[0091] In this embodiment, the data used in the first to fifth calibration vector tables can all be data generated during the HVAC development process. The first to third calibration vector tables can be based on actual models, while the fourth and fifth calibration vector tables can be based on relevant experimental results of heating control curves, which can be fitted through virtual calibration. The sixth calibration vector table can be the model switching time.

[0092] The method provided in this application embodiment can calculate the first steady-state power based on the air intake volume and heating parameters. Both the heating parameters and the air intake volume have actual physical meaning. Compared with the traditional feedforward model, it can generate feedback for various state changes of the system, effectively increasing the accuracy of heating control.

[0093] Furthermore, by using a response model, the first steady-state power can be decomposed into multiple control loops, thus obtaining the transient response. By analyzing the transient response process, the output power can be appropriately optimized. Initially, a high power demand is output, causing the heat exchanger core temperature to rise rapidly. Then, the gain effect is removed to reduce the power demand, allowing the system to stably switch to the steady-state control phase. Additionally, the current power compensation value can be obtained based on the target outlet air temperature, the current outlet air temperature, and the current heating power. When system control errors occur, the current power can be compensated, and the power request corrected to ensure the accuracy of system control.

[0094] A second aspect of this application provides a vehicle PTC heating control device 500. Figure 5 This is a schematic diagram of a vehicle PTC heating control device 500 according to an embodiment of this application, including:

[0095] The acquisition module 501 is used to acquire the intake air volume and heating parameters;

[0096] The power calculation module 502 is used to determine the first heating power based on the air intake volume and heating parameters;

[0097] The power optimization module 503 is used to optimize the first heating power according to the first heating power and the preset air heating description information to obtain the second heating power;

[0098] The determining module 504 is used to determine a first preset duration based on the second heating power and preset air heating description information; the first preset duration is the duration of heating control based on the second heating power;

[0099] The first heating control module 505 is used for heating control according to the second heating power;

[0100] The second heating control module 506 is used to perform heating control according to the first heating power if it is determined that the duration of heating control according to the second heating power reaches the first preset duration.

[0101] In this embodiment of the application, determining the first heating power based on the intake air volume and heating parameters may include:

[0102] The target outlet air enthalpy value is determined based on the target outlet air temperature and the humidity inside the vehicle;

[0103] The actual enthalpy of the inlet air is determined based on the evaporation temperature and the humidity inside the vehicle.

[0104] The equivalent air temperature is determined based on the intake air volume and the heat exchanger temperature.

[0105] Determine the mass air volume based on the equivalent air temperature;

[0106] The first heating power is determined based on the target outlet air enthalpy, the actual inlet air enthalpy, and the mass air volume.

[0107] In this embodiment, the first heating power is optimized based on the first heating power and preset air heating description information to obtain the second heating power; this may include:

[0108] The first time to reach steady state is estimated based on the first heating power and the preset air heating description information;

[0109] When the first duration is longer than the second preset duration, the first heating power is increased by a set multiple to obtain the second heating power.

[0110] In this embodiment, the first preset duration is determined based on the second heating power and preset air heating description information; this may include:

[0111] The second duration for reaching steady state is determined based on the second heating power and the preset air heating description information;

[0112] The first preset duration is determined based on the second duration.

[0113] In this embodiment of the application, a compensation module is also included, used for:

[0114] Obtain the target outlet air temperature, the current outlet air temperature, and the current heating power;

[0115] The current power compensation value is obtained based on the target outlet air temperature, the current outlet air temperature, and the current heating power.

[0116] The third heating power is obtained based on the current power compensation value and the current heating power;

[0117] Heating control is performed based on the third heating power.

[0118] In this embodiment of the application, obtaining the intake air volume may include: obtaining the intake air volume through the air mixing ratio, the blower air volume, and the air outlet mode.

[0119] A third aspect of this application provides an electronic device, which includes a processor and a memory. The memory stores at least one instruction, at least one program, code set, or instruction set. The processor loads and executes the at least one instruction, at least one program, code set, or instruction set to implement a vehicle PTC heating control method.

[0120] Memory is used to store software programs and modules. The processor executes these stored software programs and modules to perform various functional applications and data processing. Memory can primarily consist of a program storage area and a data storage area. The program storage area stores the operating system, application programs required for functionality, etc.; the data storage area stores data created based on device usage, etc. Furthermore, memory can include high-speed random access memory (RAM) and non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, memory can also include a memory controller to provide the processor with access to the memory.

[0121] The fourth aspect of this application provides a computer storage medium storing at least one instruction or at least one program, wherein the at least one instruction or at least one program is loaded and executed by a processor to implement a vehicle PTC heating control method.

[0122] Optionally, in this embodiment, the storage medium may be located at at least one of the multiple network servers in a computer network. Optionally, in this embodiment, the storage medium may include, but is not limited to, various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0123] The test data compilation requires a high level of expertise. An embodiment of the present invention also provides a storage medium. Optionally, in this embodiment, the storage medium can be used to execute program code for a vehicle PTC heating control method.

[0124] Optionally, in this embodiment, the storage medium may be located on at least one of the network devices in the network shown in the above embodiment.

[0125] Optionally, in this embodiment, the storage medium is configured to store data for performing tasks such as... Figure 2 The steps are shown.

[0126] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0127] Optionally, in this embodiment, the storage medium may include, but is not limited to, various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0128] Embodiments of the present invention also provide a computer program product or computer program including computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the vehicle PTC heating control method provided in the various optional implementations described above.

[0129] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0130] If the integrated units in the above embodiments are implemented as software functional units and sold or used as independent products, they can be stored in the aforementioned computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause one or more computer devices (which may be personal computers, servers, or network devices, etc.) to execute all or part of the steps of the methods of the various embodiments of the present invention.

[0131] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0132] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for controlling PTC heating in a vehicle, characterized in that, include: Obtain the intake air volume and heating parameters; The first heating power is determined based on the air intake volume and the heating parameters; The first heating power is optimized based on the first heating power and the preset air heating description information to obtain the second heating power; A first preset duration is determined based on the second heating power and the preset air heating description information; the first preset duration is the duration for heating control based on the second heating power. Heating control is performed based on the second heating power; If the duration of heating control based on the second heating power reaches the first preset duration, then heating control is performed based on the first heating power. The preset air heating description information includes a simulated heating control curve. The step of optimizing the first heating power based on the first heating power and the preset air heating description information to obtain a second heating power includes: The first time to reach a steady state is estimated based on the first heating power and the preset air heating description information; When the first duration is greater than the second preset duration, the first heating power is increased by a set multiple to obtain the second heating power; The first preset duration is determined based on the second heating power and the preset air heating description information; including: The second duration for reaching a steady state is determined based on the second heating power and the preset air heating description information; The first preset duration is determined based on the second duration.

2. The vehicle PTC heating control method according to claim 1, characterized in that, The heating parameters include: target air outlet temperature, heat exchanger temperature, evaporation temperature, and vehicle interior humidity.

3. The vehicle PTC heating control method according to claim 2, characterized in that, Determining the first heating power based on the air intake volume and the heating parameters includes: The target outlet air enthalpy value is determined based on the target outlet air temperature and the vehicle interior humidity. The actual inlet air enthalpy value is determined based on the evaporation temperature and the in-vehicle humidity. The equivalent air temperature is determined based on the inlet air volume and the heat exchanger temperature. The mass air volume is determined based on the equivalent air temperature. The first heating power is determined based on the target outlet air enthalpy, the actual inlet air enthalpy, and the mass air volume.

4. The vehicle PTC heating control method according to claim 1, characterized in that, After the heating control step based on the second heating power, the following steps are included: Obtain the target outlet air temperature, the current outlet air temperature, and the current heating power; The current power compensation value is obtained based on the target air outlet temperature, the current air outlet temperature, and the current heating power; The third heating power is obtained based on the current power compensation value and the current heating power; Heating control is performed based on the third heating power.

5. The vehicle PTC heating control method according to claim 1, characterized in that, Obtaining the intake air volume includes obtaining the intake air volume through the air mixing ratio, blower air volume, and air outlet mode.

6. A vehicle PTC heating control device employing the vehicle PTC heating control method according to any one of claims 1-5, characterized in that, include: The acquisition module is used to acquire the intake air volume and heating parameters; A power calculation module is used to determine the first heating power based on the air intake volume and the heating parameters; A power optimization module is used to optimize the first heating power based on the first heating power and preset air heating description information to obtain a second heating power; The determining module is used to determine a first preset duration based on the second heating power and the preset air heating description information; the first preset duration is the duration of heating control based on the second heating power; The first heating control module is used to control the heating according to the second heating power; The second heating control module is configured to perform heating control based on the first heating power if it is determined that the duration of heating control based on the second heating power reaches the first preset duration.

7. An electronic device, characterized in that, The electronic device includes a processor and a memory, wherein the memory stores at least one instruction, at least one program, a code set, or an instruction set, and the at least one instruction, the at least one program, the code set, or the instruction set is loaded and executed by the processor to implement the vehicle PTC heating control method as described in any one of claims 1-5.

8. A computer storage medium, characterized in that, The storage medium stores at least one instruction or at least one program, which is loaded and executed by a processor to implement the vehicle PTC heating control method as described in any one of claims 1-5.

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