Method, system, device and storage medium for electrically heating a vehicle with a charger

Abstract

The application relates to a method, system, device and storage medium for whole vehicle electric heating by using a charger. The method comprises the following steps: confirming that the whole vehicle has a whole vehicle electric heating demand by using the charger, and performing a charger plug-in charging operation after the preset conditions of the whole vehicle electric heating are met; then, a battery management system controls a charging positive / negative relay to be closed, and a high-voltage loop under the whole vehicle electric heating mode by the charger is switched; a whole vehicle controller and the battery management system jointly control a high-voltage power-on process under a driving mode, a discharge loop relay is closed, and the whole vehicle discharge loop is in a conduction state; after a whole vehicle electric heating switch is opened, the whole vehicle controller controls the electric heating relay to be closed, the whole vehicle controller sends a whole vehicle heating signal to the battery management system, and the whole vehicle performs electric heating. The embodiment of the application can heat the whole vehicle by using the charger at a station, so that the temperature of a vehicle passenger cabin is suitable and the vehicle battery system power is not consumed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of new energy vehicles, in particular to a method, system, device and storage medium for vehicle electric heating by using a charger. BACKGROUND

[0002] In new energy buses, pure electric vehicles account for an increasingly large market share, and the endurance of pure electric vehicles is a focus of customers' company operation, especially during winter operation. The performance of the battery system is limited due to low temperature, and the available battery system power is lower than usual. In order to ensure the comfort of passengers, the driver generally performs cabin electric heating before daily driving (i.e., vehicle preheating) or keeps the cabin electric heating (i.e., vehicle insulation) when waiting for the next departure at the station, which consumes a certain amount of battery system power, further reduces the endurance of the vehicle, and may affect the daily operation mileage. In order to ensure the comfort of passengers and ensure sufficient battery system power of the vehicle, the vehicle can be preheated or insulated using a ground charger for vehicle electric heating, and this function can share the existing hardware components on the vehicle without additional cost, which is a powerful way to ensure the comfort of passengers and the endurance of the vehicle in winter.

[0003] In the winter operation of new energy buses, the endurance of the vehicle is reduced due to the low temperature leading to the reduced performance of the battery system, and the vehicle also needs to be electrically heated to ensure that the cabin temperature is within an appropriate range, which further consumes the battery system power and shortens the endurance of the vehicle, which may affect the daily operation mileage of the bus, and even cause the vehicle to be fed and unable to normally arrive at the station. Therefore, further technical innovation is needed to solve this problem. SUMMARY

[0004] Therefore, it is necessary to provide a method, system, device and storage medium for vehicle electric heating by using a charger to solve the above technical problems.

[0005] In a first aspect, an embodiment of the present application provides a method for vehicle electric heating by using a charger, which comprises:

[0006] After confirming that the vehicle has a demand for vehicle electric heating by using the charger and that the preset conditions for vehicle electric heating are met, the charger plug-in charging operation is performed;

[0007] After the plug-in charging operation, the battery management system controls the closing of the charging positive / negative relay to switch to the high-voltage loop in the vehicle electric heating mode by using the charger;

[0008] The vehicle controller and the battery management system jointly control the high-voltage power-on process in the driving mode, and the discharge loop relay is closed to make the vehicle discharge loop in a conducting state;

[0009] After the vehicle electric heating switch is turned on, the vehicle controller controls the electric heating relay to be closed, and the vehicle controller sends a request for vehicle heating signal to the battery management system, and the battery management system controls the charging current of the charger, at this time the charging current flows into the vehicle cabin electric heater, so that the vehicle is electrically heated, and in this process the battery management system implements closed-loop control on the charging current, so that the energy only meets the use of the vehicle cabin electric heater, and prevents the battery from discharging and charging.

[0010] When the vehicle meets the stop heating condition, a vehicle heating exit signal is sent to the battery management system.

[0011] Further, after confirming that the vehicle has a demand for vehicle electric heating using the charger and that the preset conditions for vehicle electric heating are met, the charger plug-in charging operation is performed, including:

[0012] Confirming that the vehicle has a demand for vehicle electric heating using the charger;

[0013] Confirming that the SOC of the battery system exceeds 97%, and the minimum single cell voltage of the battery system exceeds 3.2V;

[0014] Confirming that the ON position of the vehicle key has been turned on, and the vehicle electric heating switch has been turned on, and performing the charger plug-in charging operation.

[0015] Further, after the vehicle electric heating switch is turned on, the vehicle controller controls the electric heating relay to be closed, and the vehicle controller sends a request for vehicle heating signal to the battery management system, and the battery management system controls the charging current of the charger, at this time the charging current flows into the vehicle cabin electric heater, so that the vehicle is electrically heated, and in this process the battery management system implements closed-loop control on the charging current, so that the energy only meets the use of the vehicle cabin electric heater, and prevents the battery from discharging and charging, including:

[0016] After the charger plug-in operation, the battery management system receives the vehicle request for heating signal sent by the vehicle;

[0017] After receiving the charger A+ and CC2 charging confirmation signal, enter the charger for vehicle electric heating mode;

[0018] Interact with the charger, request the charging current, and PI adjust the battery system current to correct the requested charging current of the charger, so that the current is only used for vehicle electric heating and does not flow into the battery system.

[0019] Further, after the plug-in charging operation, the battery management system controls the closing of the charging positive / negative relay to switch to the high-voltage loop of the charger in the vehicle electric heating mode, including:

[0020] When the battery management system determines that the conditions are met for exiting the charger and entering the vehicle's electric heating mode, it interacts with the charger.

[0021] The charging process ends by disconnecting the positive and negative charging relays separately through the battery management system.

[0022] On the other hand, embodiments of the present invention also provide a vehicle electric heating system using a charger, comprising:

[0023] The heating confirmation module is used to confirm that the vehicle has a need for electric heating using a charger, and after the preset conditions for electric heating of the vehicle are met, the charger plug-in charging operation is performed.

[0024] The heating circuit module is used to switch the high-voltage circuit of the vehicle electric heating mode by controlling the closing of the charging positive / negative relays after the charging operation via the plug-in gun.

[0025] The circuit management module is used by the vehicle controller and the battery management system to jointly control the high-voltage power-on process in driving mode, close the discharge circuit relay, and make the vehicle discharge circuit in a conducting state.

[0026] The heating control module is used to control the closing of the electric heating relay after the vehicle electric heating switch is turned on. After the vehicle controller sends a request signal for vehicle heating to the battery management system, the battery management system controls the charging current of the charger. At this time, the charging current flows into the vehicle compartment electric heater to make the whole vehicle electrically heated. During this process, the battery management system implements closed-loop control of the charging current to ensure that the energy is only used to meet the needs of the vehicle compartment electric heater and to prevent battery discharge and charging.

[0027] The heating completion module is used to send a signal to the battery management system to stop vehicle heating when the vehicle meets the conditions for stopping heating.

[0028] Furthermore, the heating confirmation module includes a condition confirmation unit, which is used for:

[0029] It was confirmed that the vehicle requires electric heating via a charger.

[0030] Confirm that the battery system's remaining SOC exceeds 97% and the lowest single-cell voltage of the battery system exceeds 3.2V;

[0031] Confirm that the vehicle key is in the ON position and the vehicle's electric heating switch is on before proceeding with the charger charging operation.

[0032] Furthermore, the heating control module includes a heating adjustment unit, which is used for:

[0033] After the charging gun is plugged in, the battery management system receives a valid vehicle heating request signal from the vehicle.

[0034] After receiving valid charging confirmation signals from charger A+ and CC2, the vehicle enters the electric heating mode.

[0035] It interacts with the charger to request charging current and performs PI regulation on the battery system current to correct the requested charging current to the charger, so that the current is used only for the electric heating of the whole vehicle and does not flow into the battery system.

[0036] Furthermore, the heating completion module includes an end control unit, which is used for:

[0037] When the battery management system determines that the conditions are met for exiting the charger and entering the vehicle's electric heating mode, it interacts with the charger.

[0038] The charging process ends by disconnecting the positive and negative charging relays separately through the battery management system.

[0039] This invention also provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it performs the following steps:

[0040] Once it is confirmed that the vehicle requires electric heating using a charger and that the preset conditions for electric heating are met, the charger plug-in charging operation is performed.

[0041] After the charging operation is completed by plugging in the charging gun, the battery management system controls the closing of the charging positive / negative relays, switching to the high-voltage circuit of the charger in the vehicle's electric heating mode;

[0042] The high-voltage power-on process in driving mode is jointly controlled by the vehicle controller and the battery management system, which closes the discharge circuit relay to make the vehicle discharge circuit in a conducting state.

[0043] After the vehicle electric heating switch is turned on, the vehicle controller controls the closing of the electric heating relay. After the vehicle controller sends a request signal for vehicle heating to the battery management system, the battery management system controls the charging current of the charger. At this time, the charging current flows into the vehicle compartment electric heater, so that the whole vehicle is electrically heated. During this process, the battery management system implements closed-loop control of the charging current to ensure that the energy is only used to meet the needs of the vehicle compartment electric heater and to prevent the battery from discharging and charging.

[0044] When the vehicle meets the conditions for stopping heating, a signal to exit vehicle heating is sent to the battery management system.

[0045] This invention also provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, performs the following steps:

[0046] Once it is confirmed that the vehicle requires electric heating using a charger and that the preset conditions for electric heating are met, the charger plug-in charging operation is performed.

[0047] After the charging operation is completed by plugging in the charging gun, the battery management system controls the closing of the charging positive / negative relays, switching to the high-voltage circuit of the charger in the vehicle's electric heating mode;

[0048] The high-voltage power-on process in driving mode is jointly controlled by the vehicle controller and the battery management system, which closes the discharge circuit relay to make the vehicle discharge circuit in a conducting state.

[0049] After the vehicle electric heating switch is turned on, the vehicle controller controls the closing of the electric heating relay. After the vehicle controller sends a request signal for vehicle heating to the battery management system, the battery management system controls the charging current of the charger. At this time, the charging current flows into the vehicle compartment electric heater, so that the whole vehicle is electrically heated. During this process, the battery management system implements closed-loop control of the charging current to ensure that the energy is only used to meet the needs of the vehicle compartment electric heater and to prevent the battery from discharging and charging.

[0050] When the vehicle meets the conditions for stopping heating, a signal to exit vehicle heating is sent to the battery management system.

[0051] The aforementioned method, system, equipment, and storage medium for vehicle electric heating using a charger include: confirming that the vehicle requires electric heating using a charger and that preset conditions for vehicle electric heating are met, then performing a charger plug-in charging operation; next, the battery management system controls the closure of the charging positive / negative relays to switch to the high-voltage circuit in the vehicle electric heating mode; the vehicle controller and the battery management system jointly control the completion of the high-voltage power-on process in driving mode, closing the discharge circuit relay to make the vehicle discharge circuit in a conducting state; after turning on the vehicle electric heating switch, the vehicle controller controls the closure of the electric heating relay, and after the vehicle controller sends a request signal for vehicle heating to the battery management system, the battery management system controls the charger charging current. At this time, the charging current flows into the passenger compartment electric heater, causing the vehicle to be electrically heated. During this process, the battery management system implements closed-loop control of the charging current, ensuring that the energy is only used for the passenger compartment electric heater, preventing battery discharge and charging. This embodiment of the invention enables vehicle electric heating outside the battery station, ensuring a suitable temperature in the vehicle's passenger compartment without consuming the vehicle's battery system power, thus improving the vehicle's driving range in winter. Attached Figure Description

[0052] Figure 1This is a flowchart illustrating a method for electric heating of a vehicle using a charger in one embodiment.

[0053] Figure 2 This is a schematic diagram of the heating confirmation process for the whole vehicle electric heating in one embodiment;

[0054] Figure 3 This is a flowchart illustrating the dynamic adjustment of the vehicle's electric heating process in one embodiment.

[0055] Figure 4 This is a schematic diagram of the process for controlling the end of electric heating of the entire vehicle in one embodiment;

[0056] Figure 5 This is a structural block diagram of a vehicle electric heating system using a charger in one embodiment;

[0057] Figure 6 This is an internal structural diagram of a computer device in one embodiment. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0059] In one embodiment, such as Figure 1 As shown, a method for electric heating of a vehicle using a charger is provided, the method comprising:

[0060] Step 101: After confirming that the vehicle has a need for electric heating using a charger and that the preset conditions for electric heating of the vehicle are met, proceed with the charger plug-in charging operation.

[0061] Step 102: After the charging operation is completed by plugging in the charging gun, the battery management system controls the closing of the charging positive / negative relays to switch the high-voltage circuit of the charger in the whole vehicle electric heating mode.

[0062] Step 103: The vehicle controller and battery management system jointly control the high-voltage power-on process in driving mode, closing the discharge circuit relay to make the vehicle discharge circuit in a conductive state.

[0063] Step 104: After turning on the vehicle electric heating switch, the vehicle controller controls the closing of the electric heating relay. After the vehicle controller sends a request signal for vehicle heating to the battery management system, the battery management system controls the charging current of the charger. At this time, the charging current flows into the vehicle compartment electric heater to heat the whole vehicle. During this process, the battery management system implements closed-loop control of the charging current to ensure that the energy is only used for the vehicle compartment electric heater and to prevent the battery from discharging and charging.

[0064] Step 105: When the vehicle meets the conditions for stopping heating, send a signal to the battery management system to exit vehicle heating.

[0065] Specifically, for the vehicle as a whole, the high-voltage section of the battery system mainly includes the battery pack, the main battery discharge circuit relay, the positive charging relay, and the negative charging relay, with control handled by the battery management system. The battery packs are connected in series to form a high-voltage branch, providing high-voltage energy to the vehicle. The main battery discharge circuit relay primarily forms a high-voltage discharge circuit for the vehicle in driving mode, providing energy to all high-voltage electrical components. The positive and negative charging relays primarily form a charging circuit for the ground charger in charging mode. When the battery management system detects a charging confirmation signal (ground charger insertion signal), it controls the relay to close, forming a charging circuit to charge the battery system. When charging is complete or manually terminated, the battery management system controls the relay to open, ending the charging process. For the high-voltage section of the vehicle system, it mainly includes the main vehicle relay and the pre-charge relay. When the high-voltage components downstream of the relay are energized, the motor can be driven, and high-voltage safety components such as the oil pump and air pump can operate normally. At this time, the electric heating switch is turned on according to the vehicle's electric heating needs. After receiving the electric heating signal, the vehicle controller controls the electric heating relay to close, providing electric heating for the vehicle. Therefore, the embodiments of the present invention enable the vehicle to be electrically heated outside the station battery, which ensures a suitable temperature in the vehicle cabin without consuming the vehicle battery system power.

[0066] In one embodiment, such as Figure 2 As shown, the heating confirmation process required before implementing whole-vehicle electric heating includes the following steps:

[0067] Step 201: Confirm that the vehicle has a need for electric heating using a charger;

[0068] Step 202: Confirm that the remaining SOC of the battery system exceeds 97% and the lowest single cell voltage of the battery system exceeds 3.2V;

[0069] Step 203: Confirm that the vehicle key is in the ON position and the vehicle's electric heating switch is on, and proceed with the charging operation using the charger plug-in gun.

[0070] Specifically, the electric heating control process of the entire vehicle can be triggered when the above conditions are met. All of the above conditions must be met simultaneously. Conversely, for control conditions that cannot trigger electric heating, electric heating will not occur in the following situations:

[0071] Conditions for exiting the charger to enter the whole vehicle electric heating mode:

[0072] 1. Battery system SOC < 96%;

[0073] 2. The lowest single-cell voltage of the battery system is <3.2V;

[0074] 3. Request a charging current of less than 10A for 10 seconds;

[0075] 4. Request a charging current greater than 50A for 10 seconds;

[0076] 5. Meet the conditions for exiting the national standard charging process (not the full charge condition);

[0077] 6. The signal to exit vehicle preheating sent by the vehicle is valid.

[0078] 7. The battery main relay is disconnected.

[0079] The above are "or" conditions.

[0080] In one embodiment, such as Figure 3 As shown, the process of dynamic adjustment of the battery system during the whole vehicle electric heating process includes:

[0081] Step 301: After the charger insertion operation, the battery management system receives a valid vehicle heating request signal sent by the vehicle.

[0082] Step 302: After receiving valid charging confirmation signals from charger A+ and CC2, the vehicle enters the electric heating mode of the charger.

[0083] Step 303: Interact with the charger to request charging current and perform PI regulation on the battery system current to correct the requested charging current from the charger, so that the current is used only for the electric heating of the whole vehicle and does not flow into the battery system.

[0084] Specifically, after the driver inserts the charging gun, the battery management system receives a valid vehicle heating request signal from the vehicle and valid charging confirmation signals from the charger's A+ and CC2. It then enters the vehicle electric heating mode via the charger, interacting with it to request charging current and adjusting the battery system current using a PI controller to correct the requested current, ensuring that the current is used for vehicle electric heating and does not flow into the battery system (which is nearly fully charged). When the battery management system determines that it is ready to exit the vehicle electric heating mode, it interacts with the charger to disconnect the battery system's positive / negative charging relays, ending the charging process.

[0085] In one embodiment, such as Figure 4 As shown, the process for ending the electric heating after the entire vehicle is electrically heated includes:

[0086] Step 401: When the battery management system determines that the conditions are met for exiting the charger and entering the vehicle electric heating mode, it interacts with the charger.

[0087] Step 402: Disconnect the positive and negative charging relays through the battery management system to end the charging process.

[0088] Specifically, the battery management system must disable the battery heating function after entering the vehicle electric heating mode via the charger. When the battery management system enters the normal charging mode, it will no longer respond to the charger's request for vehicle electric heating mode, ensuring high-voltage electrical safety during charging.

[0089] It should be understood that although the steps in the flowchart above are shown sequentially as indicated by the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowchart above may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the sub-steps or stages of other steps.

[0090] In one embodiment, such as Figure 5 As shown, a vehicle electric heating system using a charger is provided, comprising:

[0091] The heating confirmation module 501 is used to confirm that the vehicle has a need for electric heating using a charger and that the preset conditions for electric heating of the vehicle are met before proceeding with the charger plug-in charging operation.

[0092] The heating circuit module 502 is used to switch the high-voltage circuit of the vehicle electric heating mode by controlling the closing of the charging positive / negative relays after the charging operation via the plug-in gun.

[0093] The circuit management module 503 is used to jointly control the high-voltage power-on process in driving mode by the vehicle controller and the battery management system, close the discharge circuit relay, and make the vehicle discharge circuit in a conducting state.

[0094] The heating control module 504 is used to control the closing of the electric heating relay after the vehicle electric heating switch is turned on. After the vehicle controller sends a request signal for vehicle heating to the battery management system, the battery management system controls the charging current of the charger. At this time, the charging current flows into the vehicle compartment electric heater to make the whole vehicle electric heating. During this process, the battery management system implements closed-loop control of the charging current to ensure that the energy is only used to meet the needs of the vehicle compartment electric heater and to prevent battery discharge and charging.

[0095] The heating completion module 505 is used to send a signal to the battery management system to exit vehicle heating when the vehicle meets the conditions for stopping heating.

[0096] In one embodiment, the heating confirmation module 501 includes a condition confirmation unit, which is used for:

[0097] It was confirmed that the vehicle requires electric heating via a charger.

[0098] Confirm that the battery system's remaining SOC exceeds 97% and the lowest single-cell voltage of the battery system exceeds 3.2V;

[0099] Confirm that the vehicle key is in the ON position and the vehicle's electric heating switch is on before proceeding with the charger charging operation.

[0100] In one embodiment, the heating control module 504 includes a heating adjustment unit, which is used for:

[0101] After the charging gun is plugged in, the battery management system receives a valid vehicle heating request signal from the vehicle.

[0102] After receiving valid charging confirmation signals from charger A+ and CC2, the vehicle enters the electric heating mode.

[0103] It interacts with the charger to request charging current and performs PI regulation on the battery system current to correct the requested charging current to the charger, so that the current is used only for the electric heating of the whole vehicle and does not flow into the battery system.

[0104] In one embodiment, the heating completion module 505 includes an end control unit, which is used for:

[0105] When the battery management system determines that the conditions are met for exiting the charger and entering the vehicle's electric heating mode, it interacts with the charger.

[0106] The charging process ends by disconnecting the positive and negative charging relays separately through the battery management system.

[0107] Specific limitations regarding the use of a charger for a vehicle electric heating system can be found in the above description of the limitations on the method of using a charger for vehicle electric heating, and will not be repeated here. Each module in the aforementioned vehicle electric heating system using a charger can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device, or stored in the memory of a computer device as software, so that the processor can call and execute the corresponding operations of each module.

[0108] Figure 6 An internal structural diagram of a computer device in one embodiment is shown. Figure 6As shown, the computer device includes a processor, memory, network interface, input device, and display screen connected via a system bus. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores an operating system and may also store a computer program. When executed by the processor, this computer program enables the processor to implement a method for electrically heating the entire vehicle using a charger. The internal memory may also store a computer program, which, when executed by the processor, enables the processor to implement the method for electrically heating the entire vehicle using a charger. The display screen can be an LCD screen or an e-ink screen. The input device can be a touch layer covering the display screen, buttons, a trackball, or a touchpad mounted on the computer device's casing, or an external keyboard, touchpad, or mouse.

[0109] Those skilled in the art will understand that Figure 6 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0110] In one embodiment, a computer device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to perform the following steps:

[0111] Once it is confirmed that the vehicle requires electric heating using a charger and that the preset conditions for electric heating are met, the charger plug-in charging operation is performed.

[0112] After the charging operation is completed by plugging in the charging gun, the battery management system controls the closing of the charging positive / negative relays, switching to the high-voltage circuit of the charger in the vehicle's electric heating mode;

[0113] The high-voltage power-on process in driving mode is jointly controlled by the vehicle controller and the battery management system, which closes the discharge circuit relay to make the vehicle discharge circuit in a conducting state.

[0114] After the vehicle electric heating switch is turned on, the vehicle controller controls the closing of the electric heating relay. After the vehicle controller sends a request signal for vehicle heating to the battery management system, the battery management system controls the charging current of the charger. At this time, the charging current flows into the vehicle compartment electric heater, so that the whole vehicle is electrically heated. During this process, the battery management system implements closed-loop control of the charging current to ensure that the energy is only used to meet the needs of the vehicle compartment electric heater and to prevent the battery from discharging and charging.

[0115] When the vehicle meets the conditions for stopping heating, a signal to exit vehicle heating is sent to the battery management system.

[0116] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0117] It was confirmed that the vehicle requires electric heating via a charger.

[0118] Confirm that the battery system's remaining SOC exceeds 97% and the lowest single-cell voltage of the battery system exceeds 3.2V;

[0119] Confirm that the vehicle key is in the ON position and the vehicle's electric heating switch is on before proceeding with the charger charging operation.

[0120] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0121] After the charging gun is plugged in, the battery management system receives a valid vehicle heating request signal from the vehicle.

[0122] After receiving valid charging confirmation signals from charger A+ and CC2, the vehicle enters the electric heating mode.

[0123] It interacts with the charger to request charging current and performs PI regulation on the battery system current to correct the requested charging current to the charger, so that the current is used only for the electric heating of the whole vehicle and does not flow into the battery system.

[0124] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0125] When the battery management system determines that the conditions are met for exiting the charger and entering the vehicle's electric heating mode, it interacts with the charger.

[0126] The charging process ends by disconnecting the positive and negative charging relays separately through the battery management system.

[0127] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, the computer program performing the following steps when executed by a processor:

[0128] Once it is confirmed that the vehicle requires electric heating using a charger and that the preset conditions for electric heating are met, the charger plug-in charging operation is performed.

[0129] After the charging operation is completed by plugging in the charging gun, the battery management system controls the closing of the charging positive / negative relays, switching to the high-voltage circuit of the charger in the vehicle's electric heating mode;

[0130] The high-voltage power-on process in driving mode is jointly controlled by the vehicle controller and the battery management system, which closes the discharge circuit relay to make the vehicle discharge circuit in a conducting state.

[0131] After the vehicle electric heating switch is turned on, the vehicle controller controls the closing of the electric heating relay. After the vehicle controller sends a request signal for vehicle heating to the battery management system, the battery management system controls the charging current of the charger. At this time, the charging current flows into the vehicle compartment electric heater, so that the whole vehicle is electrically heated. During this process, the battery management system implements closed-loop control of the charging current to ensure that the energy is only used to meet the needs of the vehicle compartment electric heater and to prevent the battery from discharging and charging.

[0132] When the vehicle meets the conditions for stopping heating, a signal to exit vehicle heating is sent to the battery management system.

[0133] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0134] It was confirmed that the vehicle requires electric heating via a charger.

[0135] Confirm that the battery system's remaining SOC exceeds 97% and the lowest single-cell voltage of the battery system exceeds 3.2V;

[0136] Confirm that the vehicle key is in the ON position and the vehicle's electric heating switch is on before proceeding with the charger charging operation.

[0137] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0138] After the charging gun is plugged in, the battery management system receives a valid vehicle heating request signal from the vehicle.

[0139] After receiving valid charging confirmation signals from charger A+ and CC2, the vehicle enters the electric heating mode.

[0140] It interacts with the charger to request charging current and performs PI regulation on the battery system current to correct the requested charging current to the charger, so that the current is used only for the electric heating of the whole vehicle and does not flow into the battery system.

[0141] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0142] When the battery management system determines that the conditions are met for exiting the charger and entering the vehicle's electric heating mode, it interacts with the charger.

[0143] The charging process ends by disconnecting the positive and negative charging relays separately through the battery management system.

[0144] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above methods.

[0145] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0146] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A method for electric heating of a vehicle using a charger, characterized in that, The method includes: Once it is confirmed that the vehicle requires electric heating using a charger and that the preset conditions for electric heating are met, the charger plug-in charging operation is performed. After the charging operation is completed by plugging in the charging gun, the battery management system controls the closing of the charging positive / negative relays, switching to the high-voltage circuit of the charger in the vehicle's electric heating mode; The high-voltage power-on process in driving mode is jointly controlled by the vehicle controller and the battery management system, which closes the discharge circuit relay to make the vehicle discharge circuit in a conducting state. After the vehicle electric heating switch is turned on, the vehicle controller controls the closing of the electric heating relay. After the vehicle controller sends a request signal for vehicle heating to the battery management system, the battery management system controls the charging current of the charger. At this time, the charging current flows into the vehicle compartment electric heater, so that the whole vehicle is electrically heated. During this process, the battery management system implements closed-loop control of the charging current to ensure that the energy is only used to meet the needs of the vehicle compartment electric heater and to prevent the battery from discharging and charging. When the vehicle meets the conditions for stopping heating, a signal to exit vehicle heating is sent to the battery management system; After the vehicle's electric heating switch is turned on, the vehicle controller closes the electric heating relay. The vehicle controller then sends a request signal for vehicle heating to the battery management system. The battery management system then controls the charging current of the charger. At this time, the charging current flows into the passenger compartment electric heater, causing the entire vehicle to be electrically heated. During this process, the battery management system implements closed-loop control of the charging current to ensure that the energy is only used by the passenger compartment electric heater, preventing battery discharge and charging. This includes: After the charging gun is plugged in, the battery management system receives a valid vehicle heating request signal from the vehicle. After receiving valid charging confirmation signals from charger A+ and CC2, the vehicle enters the electric heating mode. The system interacts with the charger to request charging current and performs PI regulation on the battery system current to correct the requested charging current from the charger, so that the current is used only for the electric heating of the whole vehicle and does not flow into the battery system, thus preventing the battery from being overcharged.

2. The method for electric heating of a vehicle using a charger according to claim 1, characterized in that, After confirming that the vehicle has a need for electric heating using a charger and that the preset conditions for electric heating are met, the charger insertion and charging operation is performed, including: It was confirmed that the vehicle requires electric heating via a charger. If the battery system's SOC remains above 97% and the lowest single-cell voltage exceeds 3.2V, prioritize charging the battery. Confirm that the vehicle key is in the ON position and the vehicle's electric heating switch is on before proceeding with the charger charging operation.

3. The method for electric heating of a vehicle using a charger according to claim 1, characterized in that, After the charging operation via the plug-in gun, the battery management system controls the closure of the charging positive / negative relays, switching to the high-voltage circuit of the charger in the vehicle's electric heating mode, including: When the battery management system determines that the conditions are met for exiting the charger and entering the vehicle electric heating mode, it interacts with the charger and requests the charger to stop charging. The charging process ends by disconnecting the positive and negative charging relays separately through the battery management system.

4. A vehicle-wide electric heating system using a charger, characterized in that, include: The heating confirmation module is used to confirm that the vehicle has a need for electric heating using a charger, and after the preset conditions for electric heating of the vehicle are met, the charger plug-in charging operation is performed. The heating circuit module is used to switch the high-voltage circuit of the vehicle electric heating mode by controlling the closing of the charging positive / negative relays after the charging operation via the plug-in gun. The circuit management module is used by the vehicle controller and the battery management system to jointly control the high-voltage power-on process in driving mode, close the discharge circuit relay, and make the vehicle discharge circuit in a conducting state. The heating control module is used to control the closing of the electric heating relay after the vehicle electric heating switch is turned on. After the vehicle controller sends a request signal for vehicle heating to the battery management system, the battery management system controls the charging current of the charger. At this time, the charging current flows into the vehicle compartment electric heater to make the whole vehicle electrically heated. During this process, the battery management system implements closed-loop control of the charging current to ensure that the energy is only used to meet the needs of the vehicle compartment electric heater and to prevent battery discharge and charging. The heating completion module is used to send a signal to the battery management system to stop vehicle heating when the vehicle meets the conditions for stopping heating. The heating control module includes a heating adjustment unit, which is used for: After the charging gun is plugged in, the battery management system receives a valid vehicle heating request signal from the vehicle. After receiving valid charging confirmation signals from charger A+ and CC2, the vehicle enters the electric heating mode. It interacts with the charger to request charging current and performs PI regulation on the battery system current to correct the requested charging current to the charger, so that the current is used only for the electric heating of the whole vehicle and does not flow into the battery system.

5. The vehicle electric heating system using a charger according to claim 4, characterized in that, The heating confirmation module includes a condition confirmation unit, which is used for: It was confirmed that the vehicle requires electric heating via a charger. Confirm that the battery system's remaining SOC exceeds 97% and the lowest single-cell voltage of the battery system exceeds 3.2V; Confirm that the vehicle key is in the ON position and the vehicle's electric heating switch is on before proceeding with the charger charging operation.

6. The vehicle electric heating system using a charger according to claim 4, characterized in that, The heating completion module includes an end control unit, which is used for: When the battery management system determines that the conditions are met for exiting the charger and entering the vehicle electric heating mode, it interacts with the charger and requests the charger to stop charging. The charging process ends by disconnecting the positive and negative charging relays separately through the battery management system.

7. A computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 3.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 3.

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