Heating control method and system, product and vehicle
By enabling V2G inverter functionality in vehicles, the inverter AC power and the AC power from the charging equipment work together to provide heating energy for the AC PTC, solving the problem of insufficient heating during charging and improving the user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-20
- Publication Date
- 2026-04-07
AI Technical Summary
During charging, the heating needs of the AC PTC cannot be met, affecting the user's vehicle experience.
By enabling the vehicle's V2G inverter function, the inverter AC power and the target AC power provided by the charging equipment can be used to simultaneously provide heating energy to the AC PTC, thus meeting its heating needs.
This improves the user experience of using the AC PTC function and ensures the normal use of the AC PTC in vehicles.
Smart Images
Figure CN121799129A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of vehicle control, and more specifically, to a heating control method, system, product, and vehicle. Background Technology
[0002] With the development and breakthroughs in new energy vehicle technology, various new technologies are emerging one after another, and more and more cost-reduction solutions are being proposed, including using AC PTC to replace DC PTC.
[0003] When vehicles equipped with AC PTC need to use the AC PTC auxiliary function during charging, the AC power used during charging is usually used to heat the AC PTC. However, due to the limited charging power, the heating requirements of the AC PTC cannot be met, which affects the user's driving experience. Summary of the Invention
[0004] This application provides a heating control method, system, product, and vehicle, aiming to solve the heating requirement problem of AC PTC and improve the user's vehicle experience.
[0005] In a first aspect, embodiments of this application provide a heating control method, the method comprising: In response to a heating request signal from the vehicle's AC PTC, the vehicle is controlled to activate the target heating mode; In the target heating mode, the target AC power provided by the vehicle's inverter AC power and the charging equipment simultaneously provides the heating energy for the AC PTC.
[0006] Optionally, controlling the vehicle to activate the target heating mode includes: The vehicle's V2G inverter function is activated to control the vehicle's inverter discharge to obtain the inverter AC power.
[0007] Optionally, enabling the V2G inverter function of the vehicle includes: The target power of the inverter AC power is determined based on the target heating power of the heating request signal and the charging power of the target AC power. The inverter circuit of the vehicle is controlled to perform actions based on the target power of the inverter AC power.
[0008] Optionally, determining the target power of the inverter AC power based on the target heating power of the heating request signal and the target AC power charging power includes: The difference between the target heating power of the heating request signal and the charging power of the target AC power is taken as the target power of the inverter AC power.
[0009] Optionally, the inverter circuit includes a bidirectional on-board charger for the vehicle, the bidirectional on-board charger being adapted to connect to a power battery; the step of controlling the inverter circuit of the vehicle to perform actions according to the target power of the inverter AC power includes: The control signal of the bidirectional vehicle charger is determined based on the target power of the inverter AC power. The switching device of the bidirectional vehicle charger is turned on or off according to the control signal.
[0010] Optionally, before controlling the vehicle to activate the target heating mode, the method further includes: Whether to control the vehicle to activate the target heating mode is determined based on the charging power of the target AC power.
[0011] Optionally, determining whether to control the vehicle to activate the target heating mode based on the charging power of the target AC power includes: If the charging power of the target AC power supply does not meet the target heating power of the heating request signal, the vehicle is controlled to activate the target heating mode.
[0012] Optionally, determining whether to control the vehicle to activate the target heating mode based on the charging power of the target AC power further includes: When the charging power of the target AC power meets the target heating power of the heating request signal, the vehicle is controlled to start the first heating mode. In the first heating mode, the target AC power supply alone provides heating energy to the AC PTC.
[0013] Optionally, after controlling the vehicle to activate the target heating mode, the method further includes: Real-time monitoring of the current heating power of the AC PTC; If the charging power of the target AC power meets the current heating power, exit the target heating mode.
[0014] Optionally, after controlling the vehicle to activate the target heating mode, the method further includes: Real-time monitoring of the operating status of the AC PTC; If the AC PTC is in a faulty state, exit the target heating mode.
[0015] Optionally, the method further includes: In response to the vehicle's AC PTC heating request signal, the type of charging gun currently connected to the vehicle is detected; If the type of charging gun currently connected to the vehicle is not an AC charging gun, control the vehicle to turn on the second heating mode. In the second heating mode, the vehicle's power battery provides heating energy solely to the AC PTC.
[0016] Optionally, controlling the vehicle to activate the second heating mode includes: The vehicle's power battery is controlled to perform inverter discharge according to the target heating power of the heating request signal, so as to provide heating energy for the AC PTC.
[0017] Secondly, embodiments of this application provide a heating control system, the system comprising a bidirectional on-board charger, an AC heating unit, and a control unit, wherein: The bidirectional vehicle charger is suitable for connecting a power battery and an AC PTC. The AC heating unit is suitable for connection to the power grid and AC PTC; The control unit is connected to the bidirectional vehicle charger and the AC heating unit, and is used to execute the heating control method described in the first aspect of the embodiment.
[0018] Thirdly, embodiments of this application provide an electronic device, including: at least one processor and a memory, the memory storing a computer program executable on the processor, wherein the processor executes the computer program to perform the heating control method described in the first aspect of the embodiment.
[0019] Fourthly, embodiments of this application provide a non-volatile readable storage medium storing a computer program, wherein the computer program, when executed by a processor, performs the heating control method described in the first aspect of the embodiment.
[0020] Fifthly, embodiments of this application provide a computer program product, including a computer program / instructions, which, when executed by a processor, implement the heating control method described in the first aspect of the embodiments.
[0021] Sixthly, embodiments of this application provide a vehicle for executing the heating control method described in the first aspect of the embodiment, or including the heating control system described in the second aspect of the embodiment.
[0022] Beneficial effects: In this method, in response to the heating request signal of the vehicle's AC PTC, the vehicle is controlled to start the target heating mode. In the target heating mode, heating energy can be provided to the AC PTC based on the vehicle's inverter AC power and the target AC power provided by the charging equipment. Thus, the AC PTC can be provided with sufficient heating power based on the vehicle's inverter AC power and the target AC power, thereby meeting the heating needs of the AC PTC and improving the user experience of using the AC PTC function in the vehicle. Attached Figure Description
[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 This is a flowchart of the heating control method proposed in one embodiment of this application; Figure 2 This is a flowchart of the heating control method proposed in one embodiment of this application; Figure 3 This is a schematic diagram of current transmission in a second heating mode provided in an embodiment of this application; Figure 4 This is a schematic diagram of current transmission in a first heating mode according to an embodiment of this application; Figure 5 This is a schematic diagram of current transmission in a target heating mode proposed in an embodiment of this application; Figure 6 This is an execution flowchart of a heating control method provided in an embodiment of this application; Figure 7 This is a structural block diagram of a heating control system proposed in an embodiment of this application; Figure 8 This is a functional block diagram of a heating control device according to an embodiment of this application; Figure 9 This is a schematic diagram of an electronic device according to an embodiment of this application; Figure 10 This is a schematic diagram of a non-volatile readable storage medium proposed in an embodiment of this application; Figure 11 This is a schematic diagram of a computer program product proposed in an embodiment of this application. Detailed Implementation
[0025] 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 some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0026] VCU: Vehicle Control Unit; V2G: Vehicle to Grid, electric vehicle to grid discharge technology; PTC: Positive Temperature Coefficient, refers to the resistance that increases with increasing temperature; Bi-OBC: Bidirectional On-Board Charger; A PTC heater is a device that uses the characteristics of a positive temperature coefficient thermistor (PTC) to achieve heating and temperature control. It can reliably and safely achieve automatic temperature control without the need for additional temperature control circuits. It is widely used in the automotive field, such as for heating car batteries or air conditioning systems.
[0027] With the development and breakthroughs in new energy vehicle technology, various new technologies are emerging one after another, and more and more cost-reduction solutions are being proposed. These include using AC PTC to replace DC PTC, which can effectively reduce costs by reusing the vehicle's bidirectional on-board charger, i.e., heating the AC PTC through the Bi-OBC control unit.
[0028] Currently, there are three modes for heating AC PTC: Mode 1: Heating AC PTC during AC charging; Mode 2: Heating AC PTC during external discharge or vehicle discharge; and Mode 3: Heating AC PTC separately using Bi-OBC inverter.
[0029] However, when heating AC PTC, the power input to the AC PTC often cannot meet the heating requirements of the AC PTC. For example, when charging in Mode 1 using a 3.3kW AC charging pile, or when heating AC PTC in Mode 2, the heating power provided to the AC PTC is often insufficient, which reduces the user's experience when using the vehicle, such as reducing the user's experience when using the vehicle's air conditioning.
[0030] Therefore, this application provides a heating control method that can reduce the problem of insufficient power during AC PTC heating and improve the user's driving experience.
[0031] Reference Figure 1The diagram illustrates a flowchart of a heating control method according to an embodiment of this application. The method may specifically include the following steps: S101: In response to a heating request signal from the vehicle's AC PTC, control the vehicle to activate the target heating mode.
[0032] The AC PTC in a vehicle is an electric heating element based on the positive temperature coefficient characteristic. Its resistance increases significantly with increasing temperature, thereby automatically adjusting the current and controlling the heating power.
[0033] An AC PTC can assist in realizing many functions on a vehicle, including but not limited to heating the vehicle's air conditioning system, maintaining the temperature of the battery system, assisting in low-temperature engine start-up, and temperature management of other electronic devices. In this embodiment, the AC PTC can include any AC PTC installed on the vehicle.
[0034] In actual implementation, the heating request signal generated by the AC PTC during heating can be obtained. For example, when the AC PTC is applied to the air conditioning system, the heating request signal of the AC PTC can be reported to the vehicle controller (VCU), and the heating request signal of the AC PTC carries the target heating power required by the AC PTC during heating.
[0035] In actual implementation, the heating power of AC PTC is related to its application scenario, ranging from tens of watts to thousands of watts. For example, when AC PTC is used in the air conditioning system of pure electric vehicles for vehicle heating, its heating power ranges from 2kW to 5kW.
[0036] When a heating request signal is received from the vehicle's AC PTC, the vehicle is controlled to activate the target heating mode. In the target heating mode, the vehicle's inverter AC power and the target AC power provided by the charging equipment simultaneously provide heating energy to the AC PTC.
[0037] The target AC power refers to the AC power provided by the charging equipment currently connected to the vehicle. For example, the charging equipment includes an AC charging gun. When the vehicle is connected to the AC charging gun and the vehicle's power battery is being charged based on the target AC power, if the AC PTC auxiliary function needs to be used, such as when the air conditioner is turned on, the target AC power can be used first to heat the AC PTC.
[0038] However, the charging power of the target AC power provided by the charging equipment is sometimes insufficient to meet the heating requirements of the AC PTC. For example, common AC charging piles include those with a charging power of 3.3kW. For the AC PTC used in the air conditioning system of a pure electric vehicle, its heating power may be greater than 3.3kW. Therefore, the charging power of the target AC power provided by the AC charging pile cannot meet the heating requirements of the AC PTC. If the AC PTC is heated solely by the target AC power provided by the charging equipment, it will affect the normal operation of the vehicle's air conditioning system.
[0039] However, when the vehicle is charging, if the charging power of the target AC power provided by the charging equipment cannot meet the heating requirements of the AC PTC, in order not to affect the normal use of the AC PTC auxiliary function by the user, the charging process of the vehicle's power battery based on the target AC power can be stopped, and the vehicle's power battery can be controlled to discharge to obtain inverter AC power, so that the inverter AC power and the target AC power can simultaneously provide heating energy for the AC PTC to meet the heating power required for AC PTC heating.
[0040] Inverted AC power refers to the AC power generated after the vehicle's power battery is inverted and discharged, and the electrical parameters of the inverted AC power are synchronized with the electrical parameters of the target AC power provided by the charging equipment, such as the voltage, frequency and phase of the inverted AC power being consistent with the target AC power.
[0041] In actual implementation, during the process of controlling the vehicle to start the target heating mode, the vehicle's V2G inverter function can be enabled to control the vehicle to discharge and obtain the inverter AC power.
[0042] Currently, the bidirectional on-board charger (Bi-OBC) connected to the vehicle's power battery includes V2G inverter functionality. V2G inverter functionality, or Vehicle-to-Grid (V2G) technology, refers to the fact that electric vehicles can not only be charged from the grid, but also transmit electrical energy back to the grid when needed, realizing energy exchange between the electric vehicle battery and the grid through the inverter.
[0043] The V2G inverter function is based on Bi-OBC, which can obtain DC power from the vehicle's power battery and convert it into AC power that can be connected to the grid during charging. Grid connection means that the electrical parameters of the AC power obtained through the V2G inverter function are synchronized with the electrical parameters of the grid, so that the electrical energy in the vehicle's power battery can be transmitted to the grid without affecting the normal operation of the grid.
[0044] Therefore, in target heating mode, by enabling the vehicle's V2G inverter function, the vehicle's power battery can be controlled to discharge in an inverter manner, resulting in inverter AC power with the same voltage, frequency, and phase as the target AC power provided by the currently connected charging equipment. This allows the inverter AC power and the target AC power to simultaneously provide heating energy to the AC PTC.
[0045] In actual implementation, under the target heating mode, the V2G inverter function can be used to invert and discharge the vehicle's power battery to obtain an inverter AC power with the same voltage, frequency and phase as the target AC power. The obtained inverter AC power can be used only to assist the target AC power to provide sufficient heating power to meet the heating requirements of the AC PTC. The inverter AC power does not need to be transmitted to the grid, thereby saving the power in the vehicle's power battery.
[0046] In one feasible implementation, enabling the vehicle's V2G inverter function includes the following steps: A1: Determine the target power of the inverter AC power based on the target heating power of the heating request signal and the charging power of the target AC power.
[0047] Specifically, the difference between the target heating power of the heating request signal and the charging power of the target AC power can be used as the target power of the inverter AC power.
[0048] A2: Control the vehicle's inverter circuit to perform actions based on the target power of the inverter AC power.
[0049] Specifically, the vehicle's inverter circuit includes a bidirectional on-board charger (Bi-OBC) suitable for connecting to the vehicle's power battery.
[0050] The control signal of the bidirectional on-board charger is determined based on the target power of the inverter AC power. Then, the switching devices of the bidirectional on-board charger are turned on or off according to the control signal. Thus, based on Bi-OBC, the vehicle's power battery is inverter-discharged to obtain inverter AC power with the target power.
[0051] In one feasible implementation, before controlling the vehicle to activate the target heating mode, the method further includes: Whether to control the vehicle to activate the target heating mode is determined based on the charging power of the target AC power.
[0052] Specifically, when the charging power of the target AC power does not meet the target heating power of the heating request signal, the vehicle is controlled to start the target heating mode. At this time, the vehicle's inverter AC power and the target AC power provided by the charging equipment simultaneously provide heating energy to the AC PTC, providing sufficient heating power to the AC PTC to meet its heating requirements.
[0053] When the charging power of the target AC power meets the target heating power of the heating request signal, it indicates that the charging power of the target AC power alone can meet the heating requirements of the AC PTC. Therefore, the vehicle can be controlled to start the first heating mode. In the first heating mode, the target AC power can provide heating energy to the AC PTC independently, avoiding the consumption of the power battery in the vehicle.
[0054] In the first heating mode, the charging power of the target AC power can also be divided into the target heating power for heating the AC PTC and the remaining charging power for charging the vehicle's power battery through power allocation.
[0055] In another feasible implementation, after controlling the vehicle to activate the target heating mode, the method further includes: The current heating power of the AC PTC is monitored in real time. If the charging power of the target AC power meets the current heating power, the target heating mode is exited, and then the vehicle can be controlled to turn on the first heating mode.
[0056] In other words, by activating the vehicle's V2G inverter function to generate inverter AC power through inverter discharge, and simultaneously providing heating energy to the AC PTC through both the inverter AC power and the target AC power, if it is detected in real time that the charging power of the target AC power is sufficient to meet the current heating power of the AC PTC, the vehicle's V2G inverter function is turned off first, and the target AC power provides heating energy to the AC PTC alone, thereby avoiding unnecessary consumption of the power in the vehicle's power battery.
[0057] In actual implementation, the working status of the AC PTC can be monitored in real time; if the working status of the AC PTC is in a fault state, the target heating mode will be exited.
[0058] When a fault is detected in the AC PTC, the target heating mode can be exited to stop consuming the vehicle's power battery, and the target AC power can charge the vehicle's power battery at full charging power.
[0059] In one feasible implementation, the method further includes: In response to a heating request signal from the vehicle's AC PTC, the type of charging gun currently connected to the vehicle is detected.
[0060] If the type of charging gun currently connected to the vehicle is an AC charging gun, it is possible to further determine whether to activate the target heating mode, in which both the inverter AC power and the target AC power simultaneously provide heating energy to the AC PTC, or to activate the first heating mode, in which the target AC power alone provides heating energy to the AC PTC, based on whether the charging power of the target AC power meets the target heating power of the heating request signal.
[0061] If the type of charging gun currently connected to the vehicle is not an AC charging gun, the vehicle is controlled to activate the second heating mode. In the second heating mode, the vehicle's power battery provides heating energy solely to the AC PTC.
[0062] Since the charging gun cannot provide AC power to heat the AC PTC, if the charging gun is not an AC charging gun, the vehicle itself needs to provide AC power to heat the AC PTC. Therefore, the vehicle's power battery can be controlled to discharge in an inverter mode to heat the AC PTC.
[0063] Specifically, after activating the second heating mode, the vehicle's power battery can be controlled to perform inverter discharge based on the target heating power of the heating request signal, so as to provide heating energy for the AC PTC.
[0064] Reference Figure 2 The diagram shows a flowchart of a heating control method provided in an embodiment of this application. The method can be applied to the vehicle controller (VCU) of a vehicle. In actual implementation, other control devices can also be used, but this example does not limit the application.
[0065] Specifically, the heating control method may include the following steps: S201: Obtain the heating request signal from the vehicle's AC PTC.
[0066] When the AC PTC in the vehicle is heating, the VCU can obtain the heating request signal of the AC PTC. For example, when the AC PTC is used in the air conditioning system, the VCU obtains the heating request signal of the AC PTC reported by the air conditioning system. The heating request signal of the AC PTC carries the target heating power required by the AC PTC when heating.
[0067] S202: Detect the type of charging gun currently connected to the vehicle.
[0068] Specifically, by detecting the type of charging gun currently connected to the vehicle, it can be determined whether the vehicle is currently in charging mode and whether it is in AC charging mode.
[0069] S203: If the type of charging gun currently connected to the vehicle is not an AC charging gun, control the vehicle to turn on the second heating mode.
[0070] If the charging gun currently connected to the vehicle is not an AC charging gun, it is not possible to heat the AC PTC based on AC power. In this case, the vehicle itself needs to provide AC power to heat the AC PTC. At this time, the vehicle can be controlled to start the second heating mode. In the second heating mode, the vehicle's power battery provides heating energy to the AC PTC independently. That is, the vehicle's power battery inverts and discharges to heat the AC PTC.
[0071] Reference Figure 3 The diagram shows a current transmission schematic of the second heating mode provided in the embodiment of this application. The vehicle includes a bidirectional on-board charger, namely Bi-OBC, which has the function of bidirectional power flow. It usually adopts a two-stage conversion structure, typically consisting of a bidirectional AC-DC converter and a bidirectional DC-DC converter. The Bi-OBC can convert the AC power from the charging pile into DC power to charge the vehicle's power battery. At the same time, the Bi-OBC also has an inverter function, which can convert the DC power in the vehicle's power battery into AC power.
[0072] When the type of charging gun currently connected to the vehicle is not an AC charging gun, the second heating mode is activated, that is, the bidirectional on-board charger is controlled to use the inverter function to discharge. For example, the DC power in the vehicle's power battery is converted into 220V AC power after being converted by the Bi-OBC inverter function. The AC power is transmitted to the drive board that controls the AC PTC heating. The drive board will adjust the duty cycle according to the target heating power of the AC PTC to heat the AC PTC.
[0073] Specifically, when controlling the Bi-OBC to perform inverter discharge, the vehicle's power battery can also be controlled to perform inverter discharge at the target heating power to heat the AC PTC, so that the AC power of the inverter discharge can meet the target heating power of the AC PTC.
[0074] For example, the output power of the AC power from the inverter discharge can be changed by adjusting the switching frequency and duty cycle of the switching devices (such as IGBTs or MOSFETs).
[0075] In actual implementation, considering the loss of the current transmission path, the compensation power can be preset according to the vehicle's loss situation, and the vehicle's power battery can be controlled to perform inverter discharge with the sum of the target heating power and the compensation power, so that the power provided to the AC PTC is the target heating power of the AC PTC.
[0076] S204: If the type of charging gun currently connected to the vehicle is an AC charging gun, detect whether the charging power of the target AC power meets the target heating power of the heating request signal.
[0077] When the vehicle is currently connected to a charging gun, and the connected charging gun is an AC charging gun, it indicates that the vehicle is currently in AC charging mode. It is possible to prioritize heating the AC PTC based on the target AC power. However, it is necessary to determine whether the charging power of the target AC power meets the target heating power of the AC PTC. That is, to determine whether the heating requirements of the AC PTC can be met by relying solely on the target AC power to heat the AC PTC.
[0078] S205: When the charging power of the target AC power meets the target heating power of the heating request signal, control the vehicle to start the first heating mode.
[0079] When the vehicle is connected to the AC charging gun and the charging power of the target AC power meets the target heating power of the heating request signal, the vehicle is controlled to start the first heating mode. In the first heating mode, the target AC power provides heating energy to the AC PTC separately, avoiding the consumption of the power battery in the vehicle.
[0080] Reference Figure 4 The diagram illustrates a current transmission path for a first heating mode provided in an embodiment of this application. The first heating mode includes a transmission path for heating an AC PTC based on a target AC current and a transmission path for charging the vehicle's power battery.
[0081] In the transmission path of the AC PTC, the target AC power is transmitted to the drive board that controls the AC PTC heating. The drive board adjusts the duty cycle according to the target heating power of the AC PTC to heat the AC PTC.
[0082] In the transmission path for charging the vehicle's power battery, the target AC power is converted into DC power via Bi-OBC and stored in the vehicle's power battery.
[0083] In actual implementation, the VCU can also allocate the charging power of the target AC power according to the target heating power of the AC PTC. Specifically, the heating power allocated when heating the AC PTC is the target heating power of the AC PTC, and the remaining charging power is the actual charging power for charging the vehicle's power battery.
[0084] S206: If the charging power of the target AC power does not meet the target heating power of the heating request signal, control the vehicle to turn on the target heating mode.
[0085] When the vehicle is in AC charging mode, if the charging power of the target AC power does not meet the target heating power of the heating request signal, it indicates that relying solely on the target AC power to heat the AC PTC is insufficient to meet the heating requirements of the AC PTC.
[0086] Therefore, in order not to affect the normal use of the AC PTC function on the vehicle, the vehicle is controlled to start the target heating mode. Specifically, the vehicle's V2G inverter function can be activated. Based on the V2G inverter function, DC power can be obtained from the vehicle's power battery, and then the DC power is converted into AC power, so that the AC power and the target AC power can simultaneously provide heating energy for the AC PTC.
[0087] Based on the principle of V2G inverter, the electrical parameters of the inverter AC power after inverter discharge are matched with the electrical parameters of the power grid of the currently connected AC charging pile, such as the voltage, frequency and phase of the inverter AC power being synchronized with the target AC power.
[0088] By using inverter AC power and target AC power that are matched according to electrical parameters to heat the AC PTC together, the problem that the charging power of the target AC power is insufficient to meet the heating requirements of the AC PTC can be solved, and the AC PTC can be heated in a timely manner, improving the user's experience when using the vehicle.
[0089] Reference Figure 5 The diagram shows a current transmission schematic of the target heating mode provided in this application embodiment. When the vehicle is in AC charging mode and the charging power of the target AC power does not meet the target heating power of the AC PTC, V2G inverter discharge is performed through the vehicle's Bi-OBC. The drive board for AC PTC heating is jointly controlled by the inverter AC power and the target AC power. The drive board adjusts the duty cycle according to the target heating power of the AC PTC to heat the AC PTC.
[0090] In actual implementation, during the process of controlling and activating the V2G inverter function of the vehicle, the target power of the inverter AC can be determined based on the target heating power of the heating request signal and the target AC charging power. The control signal of the bidirectional vehicle charger is determined based on the target power of the inverter AC. Then, the switching device of the bidirectional vehicle charger is controlled to open or close according to the control signal so as to obtain inverter AC with the target power.
[0091] Specifically, the difference between the target heating power of the heating request signal and the charging power of the target AC power can be used as the target power of the inverter AC power.
[0092] For example, if the VCU receives a heating request signal from the AC PTC and the target heating power of the AC PTC is 4.4kW, and the vehicle is currently connected to an AC charging gun, but the target AC charging power is 3.3kW, then when the VCU controls the vehicle's Bi-OBC to perform V2G inverter discharge, the target discharge power is 4.4kW - 3.3kW = 1.1kW.
[0093] In actual implementation, the compensation power can be preset according to the loss of the current transmission path, so that the discharge power of the vehicle's Bi-OBC during V2G inverter discharge is the sum of the target power and the compensation power, thereby making the power of the current supplied to the AC PTC the target heating power of the AC PTC.
[0094] Reference Figure 6 The diagram illustrates the execution flowchart of a heating control method provided in an embodiment of this application, the method comprising the following steps: S1: Obtain the heating request signal from the vehicle's AC PTC.
[0095] The heating request signal of the AC PTC carries the target heating power required by the AC PTC during heating.
[0096] S2: Detect whether the type of charging gun currently connected to the vehicle is an AC charging gun.
[0097] If the type of charging gun currently connected to the vehicle is not an AC charging gun, proceed to step S3. If the type of charging gun currently connected to the vehicle is an AC charging gun, proceed to step S4.
[0098] S3: Control the vehicle to activate the second heating mode.
[0099] Specifically, in the second heating mode, the vehicle's power battery provides heating energy solely for the AC PTC. For example, by controlling the vehicle's power battery to perform inverter discharge at a target heating power, the AC PTC is heated to meet its heating requirements.
[0100] S4: Detect whether the charging power of the target AC power meets the target heating power of the AC PTC.
[0101] When the charging power of the target AC power meets the target heating power of the AC PTC, proceed to step S5; When the charging power of the target AC power does not meet the target heating power of the AC PTC, proceed to step S6; S5: Control the vehicle to activate the first heating mode.
[0102] When the vehicle is connected to the AC charging gun and the charging power of the target AC power meets the target heating power of the AC PTC, the first heating mode is activated. In the first heating mode, the target AC power provides heating energy to the AC PTC independently, avoiding the consumption of the vehicle's power battery and saving the vehicle's power.
[0103] S6: Control the vehicle to activate the target heating mode.
[0104] When the vehicle is connected to the AC charging gun, and the charging power of the target AC power cannot meet the target heating power of the AC PTC, the vehicle is controlled to activate the target heating mode. In the target heating mode, the V2G inverter function is enabled to obtain inverter AC power, and the power of the inverter AC power is the difference between the target heating power and the target AC power charging power. Based on the simultaneous provision of heating energy to the AC PTC by the vehicle's inverter AC power and the target AC power, the heating requirements of the AC PTC are met.
[0105] S7: Monitor the current heating power of the AC PTC.
[0106] S8: Monitor whether the working status of the AC PTC is normal.
[0107] When the AC PTC is in normal working condition, the current heating power is used as the target heating power, and step S2 is executed; The heating power required by the AC PTC may vary, so it is necessary to monitor the current heating power of the AC PTC in real time and dynamically adjust it to the AC PTC mode. This not only meets the heating requirements of the AC PTC, but also saves the vehicle's electricity.
[0108] When the PTC's working status is in a fault state, the current process ends.
[0109] After obtaining the heating request signal from the vehicle's AC PTC, this method determines whether the vehicle is currently in AC charging mode, and whether the charging power of the target AC power meets the target heating power of the AC PTC. Different heating methods are adopted to save vehicle power under different operating conditions while meeting the heating requirements of the AC PTC.
[0110] When the vehicle is in AC charging mode, if the charging power of the target AC power does not meet the target heating power of the heating request signal, the vehicle's V2G inverter function is activated to output inverter AC power with the same frequency, voltage, and phase as the target AC power. Based on the simultaneous provision of heating energy to the AC PTC by the vehicle's inverter AC power and the target AC power, sufficient heating power can be provided to the AC PTC by the combined action of the vehicle's inverter discharge and AC charging, thus meeting the heating requirements of the AC PTC and improving the user experience of using the AC PTC function in the vehicle.
[0111] Reference Figure 7 The diagram illustrates a structural block diagram of a heating control system according to an embodiment of this application. The system includes a bidirectional on-board charger, an AC heating unit, and a control unit, wherein: The bidirectional vehicle charger is suitable for connecting a power battery and an AC PTC. The AC heating unit is suitable for connection to the power grid and AC PTC; The control unit is connected to the bidirectional vehicle charger and the AC heating unit, and is used to execute the heating control method described in this embodiment.
[0112] For example, the control unit can be the vehicle's VCU, but other control devices can also be used in actual implementation. This embodiment does not impose any restrictions.
[0113] When an AC PTC is used in a vehicle's air conditioning system, the vehicle's VCU can communicate with the air conditioning system's compressor to obtain the AC PTC's heating request signal and determine the AC PTC's target heating power.
[0114] The vehicle's bidirectional on-board charger, or Bi-OBC, can convert the AC power from the AC charging station into DC power stored in the vehicle's battery, and can also draw DC power from the battery and convert it into AC power in response to the control of the VCU.
[0115] When the type of charging gun currently connected to the vehicle is not an AC charging gun, the VCU controls the Bi-OBC to activate the inverter function to discharge. The DC power in the vehicle's power battery is converted into 220V AC power by the Bi-OBC inverter function to provide heating energy for the AC PTC. The AC PTC drive board will adjust the duty cycle according to the target heating power of the AC PTC to heat the AC PTC.
[0116] When the vehicle is connected to the AC charging gun and the charging power of the target AC power meets the target heating power of the AC PTC, the first heating mode is activated. In the first heating mode, the target AC power provides heating energy to the AC PTC alone. The AC PTC driver board will adjust the duty cycle according to the target heating power of the AC PTC to heat the AC PTC.
[0117] When the vehicle is connected to the AC charging gun, and the charging power of the target AC power does not meet the target heating power of the AC PTC, the vehicle is controlled to start the target heating mode. In the target heating mode, the vehicle's inverter AC power and the target AC power simultaneously provide heating energy to the AC PTC. The AC PTC drive board will adjust the duty cycle according to the target heating power of the AC PTC to heat the AC PTC.
[0118] Reference Figure 8 The diagram illustrates a functional block diagram of a heating control device according to an embodiment of this application. The device includes: The target heating mode activation module 100 is used to control the vehicle to activate the target heating mode in response to the heating request signal from the vehicle's AC PTC. In the target heating mode, the target AC power provided by the vehicle's inverter AC power and the charging equipment simultaneously provides the heating energy for the AC PTC.
[0119] Optionally, the target heating mode activation module includes: The V2G inverter function activation unit is used to activate the V2G inverter function of the vehicle to control the vehicle to generate inverter AC power through inverter discharge.
[0120] Optionally, the V2G inverter function activation unit includes: The target power determination unit is used to determine the target power of the inverter AC power based on the target heating power of the heating request signal and the charging power of the target AC power. An execution unit is used to control the inverter circuit of the vehicle to perform actions based on the target power of the inverter AC power.
[0121] Optionally, the target power determination unit is further configured to: The difference between the target heating power of the heating request signal and the charging power of the target AC power is taken as the target power of the inverter AC power.
[0122] Optionally, the inverter circuit includes a bidirectional on-board charger for the vehicle, the bidirectional on-board charger being adapted to connect to a power battery; the execution unit is further configured to: The control signal of the bidirectional vehicle charger is determined based on the target power of the inverter AC power. The switching device of the bidirectional vehicle charger is turned on or off according to the control signal.
[0123] Optionally, the device further includes: The power detection module is used to determine whether to control the vehicle to turn on the target heating mode based on the charging power of the target AC power.
[0124] Optionally, the target heating mode activation module is used to: If the charging power of the target AC power supply does not meet the target heating power of the heating request signal, the vehicle is controlled to activate the target heating mode.
[0125] Optionally, the device further includes: The first heating mode activation module is used to control the vehicle to activate the first heating mode when the charging power of the target AC power meets the target heating power of the heating request signal. In the first heating mode, the target AC power supply alone provides heating energy to the AC PTC.
[0126] Optionally, the device further includes: A power monitoring module is used to monitor the current heating power of the AC PTC in real time; The first exit module is used to exit the target heating mode when the charging power of the target AC power meets the current heating power.
[0127] Optionally, the device further includes: The working status monitoring module is used to monitor the working status of the AC PTC in real time; The second exit module is used to exit the target heating mode when the working state of the AC PTC is in a fault state.
[0128] Optionally, the device further includes: The charging gun detection module is used to detect the type of charging gun currently connected to the vehicle in response to the heating request signal of the vehicle's AC PTC. The second heating mode activation module is used to control the vehicle to activate the second heating mode when the type of charging gun currently connected to the vehicle is not an AC charging gun; in the second heating mode, the vehicle's power battery provides heating energy solely to the AC PTC.
[0129] Optionally, the second heating mode activation module includes: The inverter unit is used to control the vehicle's power battery to perform inverter discharge according to the target heating power of the heating request signal, so as to provide heating energy for the AC PTC.
[0130] Reference Figure 9 The diagram illustrates an electronic device according to an embodiment of this application, including: at least one processor and a memory, the memory storing a computer program executable on the processor, wherein the processor executes the computer program to perform the heating control method described in the embodiment.
[0131] Reference Figure 10 The diagram illustrates a non-volatile readable storage medium provided in an embodiment of this application. The non-volatile readable storage medium stores a computer program, wherein the computer program, when executed by a processor, performs the heating control method described in the embodiment.
[0132] Reference Figure 11 The diagram illustrates a computer program product provided in an embodiment of this application, including a computer program / instructions that, when executed by a processor, implement the heating control method described in the embodiment.
[0133] This application also provides a vehicle for executing the heating control method described in this embodiment, or including the heating control system described in this embodiment, or including the heating control device described in this embodiment.
[0134] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.
[0135] Those skilled in the art will understand that embodiments of this application can be provided as methods, apparatus, or computer program products. Therefore, embodiments of this application can take the form of entirely hardware embodiments, entirely software embodiments, or embodiments combining software and hardware aspects. Furthermore, embodiments of this application can take the form of computer program products implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.
[0136] This application describes embodiments with reference to flowchart illustrations and / or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of this application. It should be understood that each block of the flowchart illustrations and / or block diagrams, as well as combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing terminal device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal device, generate instructions for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.
[0137] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing terminal device to operate in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.
[0138] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal equipment, causing a series of operational steps to be performed on the computer or other programmable terminal equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable terminal equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.
[0139] Although preferred embodiments of the present application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present application.
[0140] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.
[0141] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.
Claims
1. A heating control method, characterized in that, The method includes: In response to a heating request signal from the vehicle's AC PTC, the vehicle is controlled to activate the target heating mode; In the target heating mode, the target AC power provided by the vehicle's inverter AC power and the charging equipment simultaneously provides the heating energy for the AC PTC.
2. The method according to claim 1, characterized in that, The control of the vehicle to activate the target heating mode includes: The vehicle's V2G inverter function is activated to control the vehicle's inverter discharge to obtain the inverter AC power.
3. The method according to claim 2, characterized in that, Enabling the V2G inverter function of the vehicle includes: The target power of the inverter AC power is determined based on the target heating power of the heating request signal and the charging power of the target AC power. The inverter circuit of the vehicle is controlled to perform actions based on the target power of the inverter AC power.
4. The method according to claim 3, characterized in that, Determining the target power of the inverter AC power based on the target heating power of the heating request signal and the target AC power charging power includes: The difference between the target heating power of the heating request signal and the charging power of the target AC power is taken as the target power of the inverter AC power.
5. The method according to claim 3, characterized in that, The inverter circuit includes a bidirectional on-board charger for the vehicle, the bidirectional on-board charger being adapted to connect to a power battery; the step of controlling the inverter circuit to perform actions based on the target power of the inverter AC power includes: The control signal of the bidirectional vehicle charger is determined based on the target power of the inverter AC power. The switching device of the bidirectional vehicle charger is turned on or off according to the control signal.
6. The method according to claim 1, characterized in that, Before controlling the vehicle to activate the target heating mode, the method further includes: Whether to control the vehicle to activate the target heating mode is determined based on the charging power of the target AC power.
7. The method according to claim 6, characterized in that, The step of determining whether to control the vehicle to activate the target heating mode based on the charging power of the target AC power includes: If the charging power of the target AC power supply does not meet the target heating power of the heating request signal, the vehicle is controlled to activate the target heating mode.
8. The method according to claim 6, characterized in that, The step of determining whether to control the vehicle to activate the target heating mode based on the charging power of the target AC power also includes: When the charging power of the target AC power meets the target heating power of the heating request signal, the vehicle is controlled to start the first heating mode. In the first heating mode, the target AC power supply alone provides heating energy to the AC PTC.
9. The method according to any one of claims 1-8, characterized in that, After controlling the vehicle to activate the target heating mode, the method further includes: Real-time monitoring of the current heating power of the AC PTC; If the charging power of the target AC power meets the current heating power, exit the target heating mode.
10. The method according to any one of claims 1-8, characterized in that, After controlling the vehicle to activate the target heating mode, the method further includes: Real-time monitoring of the operating status of the AC PTC; If the AC PTC is in a faulty state, exit the target heating mode.
11. The method according to any one of claims 1-8, characterized in that, The method further includes: In response to the vehicle's AC PTC heating request signal, the type of charging gun currently connected to the vehicle is detected; If the type of charging gun currently connected to the vehicle is not an AC charging gun, control the vehicle to turn on the second heating mode. In the second heating mode, the vehicle's power battery provides heating energy solely to the AC PTC.
12. The method according to claim 11, characterized in that, The control of the vehicle to activate the second heating mode includes: The vehicle's power battery is controlled to perform inverter discharge according to the target heating power of the heating request signal, so as to provide heating energy for the AC PTC.
13. A heating control system, characterized in that, The system includes a bidirectional on-board charger, an AC heating unit, and a control unit, wherein: The bidirectional vehicle charger is suitable for connecting a power battery and an AC PTC. The AC heating unit is suitable for connection to the power grid and AC PTC; The control unit is connected to the bidirectional vehicle charger and the AC heating unit, and is used to execute the heating control method according to any one of claims 1-12.
14. An electronic device, characterized in that, include: At least one processor and a memory storing a computer program executable on the processor, wherein the processor executes the computer program to perform the heating control method according to any one of claims 1-12.
15. A non-volatile readable storage medium, characterized in that, The non-volatile readable storage medium stores a computer program, wherein when the computer program is executed by a processor, it performs the heating control method according to any one of claims 1-12.
16. A computer program product comprising a computer program / instructions, characterized in that, When the computer program / instructions are executed by the processor, they implement the heating control method according to any one of claims 1-12.
17. A vehicle, characterized in that, The vehicle is used to perform the heating control method according to any one of claims 1-12, or includes the heating control system according to claim 13.