Control method, device and system of vehicle heating system, storage medium and product

Abstract

The invention discloses a control method, device and system of a vehicle heating system, a storage medium and a product. The method comprises the steps that in response to the situation that a heating event of a cab heating system of the new energy vehicle is triggered, the set temperature in a cab of the new energy vehicle by a user is obtained; according to the set temperature, the target air outlet temperature of an air conditioner box in the cab heating system is determined; the target outlet water temperature of a high-pressure water heating PTC in the cab heating system is determined according to the target outlet air temperature; and according to the target water outlet temperature and the actual water outlet temperature of the high-pressure water heating PTC, the target power of the high-pressure water heating PTC is determined, and the high-pressure water heating PTC is controlled to heat a cab of the new energy vehicle based on the target power. According to the scheme, efficient heating control can be conducted on the cab heating system of the new energy vehicle, and the temperature in a cab can rapidly meet the requirement for thermal comfort of a human body.

Description

Technical Field

[0001] The present invention relates to the field of vehicle control technology, and in particular to a control method, device, system, storage medium and product of a vehicle heating system. Background Art

[0002] The heat source for cab heating in traditional commercial vehicles comes from the engine. When the coolant in the engine water cycle flows through the heater core in the air conditioning box, the fan transfers the heat to the cab through the air duct to achieve the effect of cab heating and defrosting. New energy vehicles do not have engines, so they need to find new heat sources to provide heat for cab heating and defrosting.

[0003] At present, new energy commercial vehicles (pure electric vehicles, hybrid vehicles, fuel-electric vehicles) mainly use high-pressure water heating PTC (Water Positive Temperature Coefficient), waste heat and heating systems that combine the two. Although the source of heat varies according to different models, such as pure electric vehicles can use heat pumps for heating, but the waste heat is limited, and high-pressure water heating PTC is still the main source of heat for cab heating. In addition, new energy vehicles have relatively strict requirements on energy consumption. Therefore, PTC's efficient temperature control and reduced energy consumption are very important for cab thermal comfort and energy saving of new energy vehicles. Summary of the invention

[0004] The present invention provides a control method, device, system, storage medium and product of a vehicle heating system, which can efficiently control the heating system of a cab of a new energy vehicle so that the temperature in the cab can quickly meet the thermal comfort requirements of the human body.

[0005] According to one aspect of the present invention, there is provided a control method for a vehicle heating system, comprising:

[0006] In response to a heating event of a cab heating system of a new energy vehicle being triggered, obtaining a set temperature of a cab of the new energy vehicle set by a user;

[0007] Determining a target air outlet temperature of an air conditioning box in the cab heating system according to the set temperature;

[0008] Determining a target water outlet temperature of the high-pressure water heater PTC in the cab heating system according to the target air outlet temperature;

[0009] According to the target water outlet temperature and the actual water outlet temperature of the high-pressure water heating PTC, the target power of the high-pressure water heating PTC is determined, and the high-pressure water heating PTC is controlled to heat the cab of the new energy vehicle based on the target power.

[0010] According to another aspect of the present invention, there is provided a control device for a vehicle heating system, comprising:

[0011] A set temperature acquisition module, for acquiring a set temperature of the cab of the new energy vehicle set by a user in response to a heating event of the cab heating system of the new energy vehicle being triggered;

[0012] A target outlet air temperature determination module, used to determine the target outlet air temperature of the air conditioning box in the cab heating system according to the set temperature;

[0013] A target outlet water temperature determination module, used to determine the target outlet water temperature of the high-pressure water heating PTC in the cab heating system according to the target outlet air temperature;

[0014] The target power determination module is used to determine the target power of the high-pressure water heating PTC according to the target water outlet temperature and the actual water outlet temperature of the high-pressure water heating PTC, and control the high-pressure water heating PTC to heat the cab of the new energy vehicle based on the target power.

[0015] According to another aspect of the present invention, a vehicle heating system is provided, the vehicle heating system comprising:

[0016] at least one processor; and

[0017] a memory communicatively connected to the at least one processor; wherein,

[0018] The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the control method of the vehicle heating system described in any embodiment of the present invention.

[0019] According to another aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the vehicle heating system control method described in any embodiment of the present invention when executed.

[0020] According to another aspect of the present invention, a computer program product is provided. The computer program product comprises a computer program. When the computer program is executed by a processor, the control method of the vehicle heating system according to any embodiment of the present invention is implemented.

[0021] The control scheme of the vehicle heating system of the embodiment of the present invention, in response to the heating event of the cab heating system of the new energy vehicle being triggered, obtains the user's set temperature in the cab of the new energy vehicle; determines the target air outlet temperature of the air conditioning box in the cab heating system according to the set temperature; determines the target water outlet temperature of the high-pressure water heating PTC in the cab heating system according to the target air outlet temperature; determines the target power of the high-pressure water heating PTC according to the target water outlet temperature and the actual water outlet temperature of the high-pressure water heating PTC, and controls the high-pressure water heating PTC to heat the cab of the new energy vehicle based on the target power. Through the technical scheme provided by the embodiment of the present invention, the cab heating system of the new energy vehicle can be efficiently heated and controlled, so that the temperature in the cab can quickly meet the thermal comfort requirements of the human body.

[0022] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 A flow chart of a method for controlling a vehicle heating system provided in Embodiment 1 of the present invention;

[0025] Figure 2 A schematic diagram of the structure of a cab heating system for a new energy vehicle provided by an embodiment of the present invention;

[0026] Figure 3 The outlet air temperature curve provided by the embodiment of the present invention;

[0027] Figure 4 A schematic diagram of a power adjustment process of a high-pressure water heating PTC provided by an embodiment of the present invention;

[0028] Figure 5 A flow chart of a method for controlling a vehicle heating system provided in Embodiment 2 of the present invention;

[0029] Figure 6 is a schematic structural diagram of a control device for a vehicle heating system provided according to a third embodiment of the present invention;

[0030] Figure 7It is a structural schematic diagram of a vehicle heating system for implementing the control method of the vehicle heating system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0032] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0033] Embodiment 1

[0034] Figure 1 A flow chart of a method for controlling a vehicle heating system is provided for the first embodiment of the present invention. This embodiment is applicable to the case of controlling a cab heating system of a new energy vehicle. The method can be executed by a control device for the vehicle heating system. The control device for the vehicle heating system can be implemented in the form of hardware and / or software. The control device for the vehicle heating system can be configured in the vehicle heating system. Figure 1 As shown, the method includes:

[0035] S110 . In response to a heating event of a cab heating system of a new energy vehicle being triggered, obtaining a set temperature of the cab of the new energy vehicle set by a user.

[0036] Figure 2 The present invention provides a schematic diagram of the structure of a new energy vehicle cabin heating system (also referred to as a vehicle heating system) according to an embodiment of the present invention. Figure 2As shown, the cab heating system includes: an expansion tank, a heating water pump, an indirect condenser, a temperature sensor, a water-heating PTC, an air conditioning box, an air conditioning controller and a heating pipe. Among them, the expansion tank is used to store the cooling liquid of the heating circuit; the heating water pump is used to provide the water flow required for the heating water circuit circulation; the indirect condenser is used to transfer the heat generated in the refrigerant side circuit to the heating circuit; the temperature sensor is used to measure the water inlet temperature of the PTC; the water-heating PTC is used to heat the cooling liquid of the heating circuit; the heated cooling liquid enters the heating core in the air conditioning box to heat the cold air in the cab and realize the heating of the cab; the air conditioning controller is the control unit of the cab heating system, which is used to send the required target water temperature and PTC target power to the PTC. After receiving the target power instruction, the PTC outputs the corresponding power; among them, the various components in the cab heating circuit are connected through the heating pipe.

[0037] In an embodiment of the present invention, when an air conditioning heating request input by a user is received, if it is detected that the user turns on the heating button of the air conditioning controller, it indicates that a heating event of the cab heating system of the new energy vehicle is triggered. In response to the heating event of the cab heating system of the new energy vehicle being triggered, the set temperature of the cab of the new energy vehicle set by the user is obtained. The set temperature is the ideal temperature that the user hopes to achieve in the cab of the new energy vehicle. Exemplarily, when the user turns on the heating button of the air conditioning controller, the set temperature can be entered in the air conditioning controller. Optionally, in response to the heating event of the cab heating system of the new energy vehicle being triggered, the air volume and internal and external circulation mode set by the user can also be obtained.

[0038] S120. Determine a target air outlet temperature of an air conditioning box in the cab heating system according to the set temperature.

[0039] In an embodiment of the present invention, the target air outlet temperature of the air conditioner box in the cab heating system is determined according to the set temperature. For example, the set temperature, the set air volume, and the internal and external circulation mode can be input into a pre-built air outlet temperature determination model, and the target air outlet temperature of the air conditioner box in the cab heating system is determined according to the output result of the air outlet temperature model. The air outlet temperature determination model is a pre-built machine learning model.

[0040] Optionally, determining the target air outlet temperature of the air conditioning box in the cab heating system according to the set temperature includes: obtaining the indoor temperature and outdoor temperature of the cab of the new energy vehicle; determining the target air outlet temperature of the air conditioning box in the cab heating system according to the set temperature, the indoor temperature and the outdoor temperature. In an embodiment of the present invention, the indoor temperature of the cab of the new energy vehicle is obtained by the indoor temperature sensor of the new energy vehicle, and the outdoor temperature of the cab of the new energy vehicle is obtained by the outdoor temperature sensor of the new energy vehicle, wherein the outdoor temperature of the cab can also be understood as the ambient temperature of the new energy vehicle. The set temperature, indoor temperature and outdoor temperature are analyzed, and the target air outlet temperature of the air conditioning box in the cab heating system is determined according to the analysis results. Optionally, the target outlet air temperature of the air-conditioning box in the cab heating system is determined according to the set temperature, the indoor temperature and the outdoor temperature, including: calculating the indoor temperature difference between the indoor temperature and the set temperature; obtaining a first mapping relationship between a preset outdoor temperature, the temperature difference between the set temperature and the indoor temperature, and the outlet air temperature; and determining the target outlet air temperature of the air-conditioning box in the cab heating system according to the outdoor temperature, the indoor temperature difference and the first mapping relationship. In an embodiment of the present invention, the indoor temperature difference ΔT between the indoor temperature and the set temperature is calculated, and the target outlet air temperature Tao of the air-conditioning box in the cab heating system is determined according to the outdoor temperature Tout, the indoor temperature difference ΔT and the mapping relationship between the preset outdoor temperature, the temperature difference between the set temperature and the indoor temperature, and the outlet air temperature. Exemplarily, a surface graph of the outlet air temperature is drawn according to the mapping relationship between the preset outdoor temperature, the temperature difference between the set temperature and the indoor temperature, and the outlet air temperature. Figure 3 The outlet air temperature curve diagram provided by the embodiment of the present invention. According to the outdoor temperature Tout and the indoor temperature difference ΔT, Figure 3 The corresponding outlet air temperature is searched in the outlet air temperature surface diagram shown, and the found outlet air temperature is used as the target outlet air temperature Tao of the air conditioning box in the cab heating system.

[0041] S130. Determine a target water outlet temperature of the high-pressure water heater PTC in the cab heating system according to the target air outlet temperature.

[0042] In an embodiment of the present invention, the target water outlet temperature of the high-pressure water heating PTC in the cab heating system is determined according to the target air outlet temperature. It can be understood that the target water outlet temperature is to make the temperature of the air outlet of the air-conditioning box in the cab heating system reach the target air outlet temperature Tao, which is the ideal water outlet temperature that the high-pressure water heating PTC in the cab heating system should reach. That is, the target water outlet temperature is to make the temperature in the cab reach the set temperature input by the user, which is the ideal water outlet temperature that the high-pressure water heating PTC in the cab heating system should reach. Exemplarily, the temperature offset is determined according to the outdoor temperature of the cab of the new energy vehicle. For example, a mapping relationship between a preset outdoor temperature and a temperature offset is obtained, and the temperature offset is determined according to the outdoor temperature and the mapping relationship. Then, the target water outlet temperature of the high-pressure water heating PTC in the cab heating system is calculated based on the temperature offset and the target air outlet temperature.

[0043] Optionally, the target water outlet temperature of the high-pressure water heating PTC in the cab heating system is determined according to the target air outlet temperature, including: calculating the temperature offset of the set temperature relative to the outdoor temperature of the cab of the new energy vehicle; calculating the target water outlet temperature of the high-pressure water heating PTC in the cab heating system according to the target air outlet temperature and the temperature offset; wherein the target water outlet temperature is the sum of the target air outlet temperature and the temperature offset. Exemplarily, the difference between the set temperature and the outdoor temperature of the cab of the new energy vehicle is calculated, the difference is used as the temperature offset T1, and then the sum of the target air outlet temperature and the temperature offset is used as the target water outlet temperature Tptcsettemp of the high-pressure water heating PTC in the cab heating system. That is, Tptcsettemp=Tao+T1. Optionally, when the cab heating system of the new energy vehicle is heating, in order to effectively protect the high-pressure water heating PTC, the maximum water outlet temperature of the high-pressure water heating PTC is set to 85℃, and when the cab heating system of the new energy vehicle is in the off state, the default water outlet temperature of the high-pressure water heating PTC is set to 0℃.

[0044] S140. Determine the target power of the high-pressure water heating PTC according to the target water outlet temperature and the actual water outlet temperature of the high-pressure water heating PTC, and control the high-pressure water heating PTC to heat the cab of the new energy vehicle based on the target power.

[0045] In the embodiment of the present invention, since the target water outlet temperature is the ideal water outlet temperature that the high-pressure water heating PTC in the cab heating system should reach in order to make the temperature in the cab reach the set temperature input by the user, but in the actual working process, the actual water outlet temperature of the high-pressure water heating PTC may deviate from the target water outlet temperature, therefore, according to the target water outlet temperature and the actual water outlet temperature of the high-pressure water heating PTC, the target power of the high-pressure water heating PTC is determined, and the high-pressure water heating PTC is controlled to heat the cab of the new energy vehicle based on the target power. Among them, when the high-pressure water heating PTC heats the cab of the new energy vehicle based on the target power, the temperature in the cab can quickly reach the set temperature input by the user.

[0046] Optionally, the target power of the high-pressure water heating PTC is determined according to the target water outlet temperature and the actual water outlet temperature of the high-pressure water heating PTC, including: judging whether the target water outlet temperature is the same as the actual water outlet temperature of the high-pressure water heating PTC; if the target water outlet temperature is not the same as the actual water outlet temperature, determining the current feedforward power of the high-pressure water heating PTC, and adjusting the current feedforward power based on the PID adjustment strategy until the target water outlet temperature is the same as the actual water outlet temperature, and using the adjusted current feedforward power as the target power of the high-pressure water heating PTC. The advantage of this setting is that the target power of the high-pressure water heating PTC can be determined accurately and quickly.

[0047] In the embodiment of the present invention, the actual outlet water temperature of the high-pressure water heating PTC is obtained through the temperature sensor in the vehicle heating system, and it is determined whether the target outlet water temperature is the same as the actual outlet water temperature of the high-pressure water heating PTC. If not, the current feedforward power of the high-pressure water heating PTC is determined, and the current feedforward power is adjusted based on the PID adjustment strategy. For example, Figure 4 A schematic diagram of the power adjustment process of a high-pressure water heating PTC provided by an embodiment of the present invention. Figure 4As shown, if the target outlet water temperature is different from the actual outlet water temperature of the high-pressure water heating PTC, the current feedforward power of the high-pressure water heating PTC is adjusted according to the preset PID adjustment strategy. Among them, the preset PID adjustment strategy may include a power adjustment period, a maximum step length of power adjustment, and a minimum step length of power adjustment. For example, the power adjustment period may be 30 seconds, the maximum step length of power adjustment may be 600W, and the minimum step length of power adjustment may be 100W. Exemplarily, if the target outlet water temperature is greater than the actual outlet water temperature of the high-pressure water heating PTC, the current feedforward power is increased according to the initial step length every 30 seconds, wherein after increasing the current feedforward power, the actual outlet water temperature of the high-pressure water heating PTC may be adjusted, at this time, it is further determined whether the target outlet water temperature is still greater than the adjusted actual outlet water temperature of the high-pressure water heating PTC, if not, the current feedforward power may be increased according to the initial step length every 30 seconds, or the current feedforward power may be increased according to the increased initial step length every 30 seconds, and so on, until the target outlet water temperature is the same as the actual outlet water temperature, and the adjusted current feedforward power is used as the target power of the high-pressure water heating PTC. It is understandable that each time the feedforward power of the high-pressure water heating PTC is adjusted, the actual outlet water temperature of the high-pressure water heating PTC will change, and then it is determined whether the actual outlet water temperature after the change is the same as the target outlet water temperature. If not, the feedforward power of the high-pressure water heating PTC is adjusted continuously, and the cycle is repeated until the target outlet water temperature is the same as the actual outlet water temperature. In the process of adjusting the feedforward power of the high-pressure water heating PTC, the adjustment step of the feedforward power can be adjusted as needed.

[0048] like Figure 4 As shown, the water outlet temperature of the high-pressure water heating PTC determines the air outlet temperature of the air-conditioning box in the cab heating system. By continuously adjusting the feedforward power of the high-pressure water heating PTC, the actual water outlet temperature of the high-pressure water heating PTC is adjusted, thereby further adjusting the air outlet temperature of the air-conditioning box in the cab heating system. By continuously adjusting the feedforward power of the high-pressure water heating PTC, the air outlet temperature of the air-conditioning box in the cab heating system reaches the target blowing temperature.

[0049] Optionally, if the target water outlet temperature is the same as the actual water outlet temperature, the current feedforward power is used as the target power of the high-pressure water heating PTC. It can be understood that if the target water outlet temperature is the same as the actual water outlet temperature, the current feedforward power is used as the target power of the high-pressure water heating PTC, that is, the high-pressure water heating PTC is controlled to heat the cab of the new energy vehicle based on the current feedforward power.

[0050] The control method of the vehicle heating system of the embodiment of the present invention, in response to the heating event of the cab heating system of the new energy vehicle being triggered, obtains the user's set temperature in the cab of the new energy vehicle; determines the target air outlet temperature of the air conditioning box in the cab heating system according to the set temperature; determines the target water outlet temperature of the high-pressure water heating PTC in the cab heating system according to the target air outlet temperature; determines the target power of the high-pressure water heating PTC according to the target water outlet temperature and the actual water outlet temperature of the high-pressure water heating PTC, and controls the high-pressure water heating PTC to heat the cab of the new energy vehicle based on the target power. Through the technical solution provided by the embodiment of the present invention, the cab heating system of the new energy vehicle can be efficiently heated and controlled, so that the temperature in the cab can quickly meet the thermal comfort requirements of the human body.

[0051] Embodiment 2

[0052] Figure 5 A flow chart of a method for controlling a vehicle heating system provided in Embodiment 2 of the present invention is shown in FIG. Figure 5 As shown, the method includes:

[0053] S510: In response to a heating event of a cab heating system of a new energy vehicle being triggered, obtaining a set temperature of the cab of the new energy vehicle set by a user.

[0054] Optionally, in response to a heating event of the cab heating system of the new energy vehicle being triggered, the user's set temperature in the cab of the new energy vehicle is obtained, including: in response to a heating event of the cab heating system of the new energy vehicle being triggered, the warm air water pump in the cab heating system is turned on, and the user's set temperature in the cab of the new energy vehicle is obtained after the warm air water pump is turned on for a first preset time. Exemplarily, when an air conditioning heating request input by the user is detected, the warm air water pump in the cab heating system is immediately turned on, and 5 seconds after the warm air water pump is turned on, the user's set temperature in the cab of the new energy vehicle is obtained, so as to control the power of the high-pressure water heating PTC according to the set temperature, thereby meeting the user's heating demand for the cab of the new energy vehicle. The advantage of this setting is that the water in the warm air water circuit can be circulated in advance to prevent the gas in the warm air water circuit from affecting the heating.

[0055] Optionally, in response to a heating event of the cab heating system of a new energy vehicle being triggered, before obtaining the set temperature of the cab of the new energy vehicle by the user, it also includes: if the ambient temperature of the new energy vehicle is less than a preset temperature threshold, and the compressor of the new energy vehicle is in operation, then the warm air water pump in the cab heating system is turned on. Exemplarily, before detecting the air conditioning heating request input by the user, it is determined whether the ambient temperature of the new energy vehicle is less than a preset temperature threshold (such as 20°C). If so, it means that the user may need to heat the cab heating system. At this time, it is further determined whether the compressor of the new energy vehicle is in operation. If so, the warm air water pump in the cab heating system is turned on to start the water circuit in advance through the warm air water pump. The advantage of this setting is that it can increase the water temperature heating speed and improve the utilization of waste heat hot water.

[0056] S520: Determine a target air outlet temperature of an air conditioning box in a cab heating system according to a set temperature.

[0057] S530: Calculate a temperature offset of the set temperature relative to the outdoor temperature of the cab of the new energy vehicle.

[0058] S540. Calculate the target water outlet temperature of the high-pressure water heater PTC in the cab heating system according to the target air outlet temperature and the temperature offset; wherein the target water outlet temperature is the sum of the target air outlet temperature and the temperature offset.

[0059] S550, determine whether the target water outlet temperature is the same as the actual water outlet temperature of the high-pressure water heating PTC. If so, execute S570, otherwise, execute S560.

[0060] S560, determine the current feedforward power of the high-pressure water heating PTC, and adjust the current feedforward power based on the PID adjustment strategy to update the current feedforward power, and return to execute S550.

[0061] Optionally, determining the current feedforward power of the high-pressure water heating PTC includes: calculating the outlet water temperature difference between the target outlet water temperature and the actual outlet water temperature; obtaining a second mapping relationship between a preset outdoor temperature, the outlet water temperature difference between the target outlet water temperature and the actual outlet water temperature, and the PTC feedforward power; determining the current feedforward power of the high-pressure water heating PTC according to the outdoor temperature of the cab of the new energy vehicle, the outlet water temperature difference, and the second mapping relationship. Exemplarily, calculating the outlet water temperature difference between the target outlet water temperature and the actual outlet water temperature, and determining the current feedforward power of the high-pressure water heating PTC according to the outdoor temperature of the cab of the new energy vehicle, the outlet water temperature difference, and the mapping relationship between the preset outdoor temperature, the outlet water temperature difference between the target outlet water temperature and the actual outlet water temperature, and the PTC feedforward power. Exemplarily, Table 1 is a mapping relationship table between an outdoor temperature, a target outlet water temperature and an actual outlet water temperature, and a PTC feedforward power provided in an embodiment of the present invention.

[0062] Table 1 Mapping relationship between outdoor temperature, target outlet water temperature, actual outlet water temperature, and PTC feedforward power

[0063]

[0064] For example, if the outlet water temperature difference between the target outlet water temperature and the actual outlet water temperature is -4°C, and the outdoor temperature of the cab of the new energy vehicle is 2°C, then according to Table 1, it can be determined that the current feedforward power of the high-pressure water heating PTC is 2800W.

[0065] S570: Use the current feed-forward power as the target power of the high-pressure water heating PTC, and control the high-pressure water heating PTC to heat the cab of the new energy vehicle based on the target power.

[0066] Through the technical solution provided by the embodiment of the present invention, the cab heating system of the new energy vehicle can be efficiently heated and controlled, so that the temperature in the cab can quickly meet the thermal comfort requirements of the human body.

[0067] In some embodiments, the actual air outlet temperature of the air conditioning box in the cab heating system is determined; and the heating opening and closing degree of the hot and cold air doors in the air conditioning box is adjusted according to the actual air outlet temperature and the target air outlet temperature. Exemplarily, the actual air outlet temperature of the air conditioning box in the cab heating system is obtained through a temperature sensor in the cab heating system, and the heating opening and closing degree of the hot and cold air doors in the air conditioning box is adjusted according to the actual air outlet temperature and the target air outlet temperature. Optionally, the heating opening and closing degree of the cold and hot air doors in the air-conditioning box is adjusted according to the actual air outlet temperature and the target air outlet temperature, including: judging the relationship between the actual air outlet temperature and the target air outlet temperature; if the actual air outlet temperature is lower than the target air outlet temperature, increasing the heating opening and closing degree of the cold and hot air doors in the air-conditioning box; if the actual air outlet temperature is higher than the target air outlet temperature, reducing the heating opening and closing degree of the cold and hot air doors in the air-conditioning box; if the actual air outlet temperature is equal to the target air outlet temperature, controlling the heating opening and closing degree of the cold and hot air doors in the air-conditioning box to remain unchanged. For example, if the actual air outlet temperature is lower than the target air outlet temperature, the heating opening degree of the cold and hot air doors in the air-conditioning cabinet is increased, that is, the cold and hot air doors are controlled to operate in the heating direction; if the actual air outlet temperature is higher than the target air outlet temperature, the heating opening degree of the cold and hot air doors in the air-conditioning cabinet is reduced, that is, the cold and hot air doors are controlled to operate in the cooling direction; if the actual air outlet temperature is equal to the target air outlet temperature, the heating opening degree of the cold and hot air doors is controlled to remain unchanged.

[0068] In some embodiments, after controlling the high-pressure water heating PTC to heat the cab of the new energy vehicle based on the target power, it also includes: after receiving the second preset time of the heating shutdown request of the cab heating system input by the user, turning off the warm air water pump in the cab heating system. Exemplarily, when receiving the heating shutdown request of the cab heating system input by the user, the warm air water pump in the cab heating system is not turned off immediately, but after receiving the second preset time (15s) of the heating shutdown request, the warm air water pump in the cab heating system is turned off. The advantage of such a setting is that the heat in the high-pressure water heating PTC can be dissipated faster to protect the high-pressure water heating PTC.

[0069] Embodiment 3

[0070] Figure 6 This is a schematic diagram of the structure of a control device for a vehicle heating system provided by Embodiment 3 of the present invention. Figure 6 As shown, the device comprises:

[0071] The set temperature acquisition module 610 is used to obtain the set temperature of the cab of the new energy vehicle set by the user in response to a heating event of the cab heating system of the new energy vehicle being triggered;

[0072] A target outlet air temperature determination module 620 is used to determine a target outlet air temperature of the air conditioning box in the cab heating system according to the set temperature;

[0073] A target outlet water temperature determination module 630 is used to determine a target outlet water temperature of the high pressure water heating PTC in the cab heating system according to the target outlet air temperature;

[0074] The target power determination module 640 is used to determine the target power of the high-pressure water heating PTC according to the target water outlet temperature and the actual water outlet temperature of the high-pressure water heating PTC, and control the high-pressure water heating PTC to heat the cab of the new energy vehicle based on the target power.

[0075] Optionally, the target air outlet temperature determination module includes:

[0076] An indoor and outdoor temperature acquisition unit, used to acquire the indoor temperature and outdoor temperature of the cab of the new energy vehicle;

[0077] The target outlet air temperature determination unit determines the target outlet air temperature of the air conditioning box in the cab heating system according to the set temperature, the indoor temperature and the outdoor temperature.

[0078] Optionally, the target outlet air temperature determination unit is used to:

[0079] Calculating the indoor temperature difference between the indoor temperature and the set temperature;

[0080] Obtaining a first mapping relationship between a preset outdoor temperature, a temperature difference between a set temperature and an indoor temperature, and an outlet air temperature;

[0081] A target air outlet temperature of an air conditioning box in the cab heating system is determined according to the outdoor temperature, the indoor temperature difference and the first mapping relationship.

[0082] Optionally, the target outlet water temperature determination module is used to:

[0083] Calculating a temperature offset of the set temperature relative to an outdoor temperature of a cab of the new energy vehicle;

[0084] The target water outlet temperature of the high-pressure water heater PTC in the cab heating system is calculated according to the target air outlet temperature and the temperature offset; wherein the target water outlet temperature is the sum of the target air outlet temperature and the temperature offset.

[0085] Optionally, the target power determination module is used to:

[0086] Determine whether the target outlet water temperature is the same as the actual outlet water temperature of the high pressure water heater PTC;

[0087] If the target water outlet temperature is different from the actual water outlet temperature, the current feedforward power of the high-pressure water heating PTC is determined, and the current feedforward power is adjusted based on the PID regulation strategy until the target water outlet temperature is the same as the actual water outlet temperature, and the adjusted current feedforward power is used as the target power of the high-pressure water heating PTC.

[0088] Optionally, the target power determination module is used to:

[0089] Calculating the outlet water temperature difference between the target outlet water temperature and the actual outlet water temperature;

[0090] Obtaining a second mapping relationship between a preset outdoor temperature, an outlet water temperature difference between a target outlet water temperature and an actual outlet water temperature, and a PTC feedforward power;

[0091] The current feedforward power of the high-pressure water heating PTC is determined according to the outdoor temperature of the cab of the new energy vehicle, the water outlet temperature difference and the second mapping relationship.

[0092] Optionally, the device further comprises:

[0093] A feedforward power determination module is used to use the current feedforward power as the target power of the high-pressure water heating PTC if the target water outlet temperature is the same as the actual water outlet temperature.

[0094] Optionally, the set temperature acquisition module is used to:

[0095] In response to a heating event of a cab heating system of a new energy vehicle being triggered, a heater water pump in the cab heating system is turned on, and a user-set temperature in the cab of the new energy vehicle is obtained after the heater water pump is turned on for a first preset time.

[0096] Optionally, also include:

[0097] The heater water pump start module is used to start the heater water pump in the cab heating system in response to a heating event of the cab heating system of the new energy vehicle being triggered, before obtaining the user's set temperature in the cab of the new energy vehicle, if the ambient temperature of the new energy vehicle is less than a preset temperature threshold and the compressor of the new energy vehicle is in operation.

[0098] Optionally, also include:

[0099] An actual air outlet temperature determination module, used to determine the actual air outlet temperature of the air conditioning box in the cab heating system;

[0100] The heating opening and closing degree adjustment module is used to adjust the heating opening and closing degree of the hot and cold air doors in the air conditioning box according to the actual air outlet temperature and the target air outlet temperature.

[0101] Optionally, the heating opening and closing degree adjustment module is used to:

[0102] Determining the magnitude relationship between the actual air outlet temperature and the target air outlet temperature;

[0103] If the actual air outlet temperature is lower than the target air outlet temperature, the heating opening and closing degree of the hot and cold air doors in the air conditioning box is increased;

[0104] If the actual air outlet temperature is greater than the target air outlet temperature, reducing the heating opening and closing degree of the hot and cold air doors in the air conditioning box;

[0105] If the actual air outlet temperature is equal to the target air outlet temperature, the heating opening and closing degrees of the hot and cold air doors in the air conditioning box are controlled to remain unchanged.

[0106] Optionally, also include:

[0107] The heater water pump shutoff module is used to shut off the heater water pump in the cab heating system after controlling the high-pressure water heating PTC to heat the cab of the new energy vehicle based on the target power and after receiving a second preset time of the heating shutoff request of the cab heating system input by the user.

[0108] The vehicle heating system device provided in the embodiment of the present invention can execute the vehicle heating system method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0109] Embodiment 4

[0110] Figure 7 A schematic diagram of a vehicle heating system 10 that can be used to implement an embodiment of the present invention is shown. The vehicle heating system is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The vehicle heating system can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or claimed herein.

[0111] like Figure 7As shown, the vehicle heating system 10 includes at least one processor 11, and a memory connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 to the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the vehicle heating system 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0112] A number of components in the vehicle heating system 10 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the vehicle heating system 10 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0113] The processor 11 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as a control method for a vehicle heating system.

[0114] In some embodiments, the control method of the vehicle heating system may be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or installed on the vehicle heating system 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the control method of the vehicle heating system described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to execute the control method of the vehicle heating system in any other appropriate manner (e.g., by means of firmware).

[0115] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0116] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0117] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0118] To provide interaction with a user, the systems and techniques described herein may be implemented on a vehicle heating system having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and pointing device (e.g., a mouse or trackball) through which a user can provide input to the vehicle heating system. Other types of devices may also be used to provide interaction with a user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0119] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0120] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0121] According to an embodiment, a computer program product is further provided. The computer program product includes a computer program. When the computer program is executed by a processor, the control method of the vehicle heating system according to any embodiment of the present invention is implemented.

[0122] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0123] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A control method for a vehicle heating system, characterized in that: include: In response to a heating event of a cab heating system of a new energy vehicle being triggered, obtaining a set temperature of a cab of the new energy vehicle set by a user; Determining a target air outlet temperature of an air conditioning box in the cab heating system according to the set temperature; Determining a target water outlet temperature of the high-pressure water heater PTC in the cab heating system according to the target air outlet temperature; According to the target water outlet temperature and the actual water outlet temperature of the high-pressure water heating PTC, the target power of the high-pressure water heating PTC is determined, and the high-pressure water heating PTC is controlled to heat the cab of the new energy vehicle based on the target power.

2. The method according to claim 1, characterized in that Determining a target air outlet temperature of an air conditioning box in the cab heating system according to the set temperature includes: Acquiring the indoor temperature and outdoor temperature of the cab of the new energy vehicle; The target air outlet temperature of the air conditioning box in the cab heating system is determined according to the set temperature, the indoor temperature and the outdoor temperature.

3. The method according to claim 2, characterized in that Determining a target air outlet temperature of an air conditioning box in the cab heating system according to the set temperature, the indoor temperature and the outdoor temperature includes: Calculating the indoor temperature difference between the indoor temperature and the set temperature; Obtaining a first mapping relationship between a preset outdoor temperature, a temperature difference between a set temperature and an indoor temperature, and an outlet air temperature; A target air outlet temperature of an air conditioning box in the cab heating system is determined according to the outdoor temperature, the indoor temperature difference and the first mapping relationship.

4. The method according to claim 1, characterized in that Determining a target outlet water temperature of a high-pressure water heater PTC in the cab heating system according to the target outlet air temperature includes: Calculating a temperature offset of the set temperature relative to an outdoor temperature of a cab of the new energy vehicle; The target water outlet temperature of the high-pressure water heater PTC in the cab heating system is calculated according to the target air outlet temperature and the temperature offset; wherein the target water outlet temperature is the sum of the target air outlet temperature and the temperature offset.

5. The method according to claim 1, characterized in that Determining the target power of the high-pressure water heating PTC according to the target water outlet temperature and the actual water outlet temperature of the high-pressure water heating PTC includes: Determine whether the target outlet water temperature is the same as the actual outlet water temperature of the high pressure water heater PTC; If the target water outlet temperature is different from the actual water outlet temperature, the current feedforward power of the high-pressure water heating PTC is determined, and the current feedforward power is adjusted based on the PID regulation strategy until the target water outlet temperature is the same as the actual water outlet temperature, and the adjusted current feedforward power is used as the target power of the high-pressure water heating PTC.

6. The method according to claim 5, characterized in that Determine the current feedforward power of the high-pressure water heating PTC, including: Calculating the outlet water temperature difference between the target outlet water temperature and the actual outlet water temperature; Obtaining a second mapping relationship between a preset outdoor temperature, an outlet water temperature difference between a target outlet water temperature and an actual outlet water temperature, and a PTC feedforward power; The current feedforward power of the high-pressure water heating PTC is determined according to the outdoor temperature of the cab of the new energy vehicle, the water outlet temperature difference and the second mapping relationship.

7. The method according to claim 5, characterized in that Also includes: If the target outlet water temperature is the same as the actual outlet water temperature, the current feedforward power is used as the target power of the high-pressure water heating PTC.

8. The method according to claim 1, characterized in that In response to a heating event of a cab heating system of a new energy vehicle being triggered, obtaining a set temperature of a cab of the new energy vehicle set by a user, including: In response to a heating event of a cab heating system of a new energy vehicle being triggered, a heater water pump in the cab heating system is turned on, and a user-set temperature in the cab of the new energy vehicle is obtained after the heater water pump is turned on for a first preset time.

9. The method according to claim 1, characterized in that: In response to a heating event of a cab heating system of a new energy vehicle being triggered, before obtaining a set temperature of the cab of the new energy vehicle set by a user, the method further includes: If the ambient temperature of the new energy vehicle is lower than a preset temperature threshold and the compressor of the new energy vehicle is in operation, the heater water pump in the cab heating system is turned on.

10. The method according to claim 1, characterized in that Also includes: Determining the actual air outlet temperature of the air conditioning box in the cab heating system; The heating opening and closing degrees of the cold and hot air doors in the air conditioning box are adjusted according to the actual air outlet temperature and the target air outlet temperature.

11. The method according to claim 10, characterized in that According to the actual air outlet temperature and the target air outlet temperature, adjusting the heating opening and closing degree of the cold and hot air doors in the air conditioning box includes: Determining the magnitude relationship between the actual air outlet temperature and the target air outlet temperature; If the actual air outlet temperature is lower than the target air outlet temperature, the heating opening and closing degree of the hot and cold air doors in the air conditioning box is increased; If the actual air outlet temperature is greater than the target air outlet temperature, reducing the heating opening and closing degree of the hot and cold air doors in the air conditioning box; If the actual air outlet temperature is equal to the target air outlet temperature, the heating opening and closing degrees of the hot and cold air doors in the air conditioning box are controlled to remain unchanged.

12. The method according to claim 1, characterized in that After controlling the high-pressure water heater PTC to heat the cab of the new energy vehicle based on the target power, the method further includes: After receiving a second preset time duration of a heating shutdown request of the cab heating system input by a user, the warm air water pump in the cab heating system is shut down.

13. A control device for a vehicle heating system, characterized in that: include: A set temperature acquisition module, for acquiring a set temperature of the cab of the new energy vehicle set by a user in response to a heating event of the cab heating system of the new energy vehicle being triggered; A target outlet air temperature determination module, used to determine the target outlet air temperature of the air conditioning box in the cab heating system according to the set temperature; A target outlet water temperature determination module, used to determine the target outlet water temperature of the high-pressure water heating PTC in the cab heating system according to the target outlet air temperature; The target power determination module is used to determine the target power of the high-pressure water heating PTC according to the target water outlet temperature and the actual water outlet temperature of the high-pressure water heating PTC, and control the high-pressure water heating PTC to heat the cab of the new energy vehicle based on the target power.

14. A vehicle heating system, characterized in that: The vehicle heating system comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the control method of the vehicle heating system according to any one of claims 1 to 12.

15. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the vehicle heating system control method according to any one of claims 1 to 12 when executed.

16. A computer program product, characterized in that The computer program product comprises a computer program, which, when executed by a processor, implements the control method of the vehicle heating system according to any one of claims 1 to 12.

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