Vehicle charging control method, device and equipment and vehicle

Abstract

The invention discloses a vehicle charging control method, device and equipment and a vehicle and relates to the technical field of vehicles, and the vehicle charging control method comprises the steps that if a charging function of the vehicle is activated, charging function entering indication information is received; if the charging function entering indication information indicates that the vehicle meets the first preset condition for entering the charging function, the vehicle is controlled to start the charging function; under the condition that the charging function of the vehicle is started, if the duration that the discharging power of the power battery is greater than or equal to the output power of the charging device is greater than or equal to a first preset duration, electronic equipment of the vehicle causing discharging of the power battery is controlled to be turned off; and after the electronic equipment of the vehicle is controlled to be turned off, if the duration that the discharge power of the power battery is larger than or equal to the output power of the charging device is larger than or equal to a second preset duration, the vehicle is controlled to exit the charging function, and the second preset duration is smaller than the first preset duration, so that the charging safety of the hybrid vehicle is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a vehicle charging control method, device, equipment and vehicle. Background Art

[0002] At present, new energy hybrid vehicles have attracted more and more attention from manufacturers. Hybrid vehicles are cars that get power from at least two types of energy, among which the engine consumes fuel and the drive motor consumes electricity. Compared with the power system of traditional cars, the power system of hybrid vehicles adds high-voltage components such as drive motors, power batteries, and DCDC on the basis of the latter; hybrid vehicles have drive motors, power batteries, DCDC, etc., and the charging process involves the control of high-voltage components such as power batteries. A good control method can play a significant role in improving the safety and stability of vehicle charging.

[0003] The charging method for hybrid vehicles in the related art is mainly aimed at improving the charging efficiency, resulting in low charging safety of hybrid vehicles. Summary of the invention

[0004] The main purpose of the embodiments of the present application is to provide a vehicle charging control method, device, equipment and vehicle, aiming to improve the charging safety of hybrid vehicles.

[0005] To achieve the above-mentioned purpose, one aspect of an embodiment of the present application proposes a vehicle charging control method, comprising the following steps: when the charging function of the vehicle is activated, receiving an indication information for entering the charging function, wherein the indication information for entering the charging function is used to indicate whether the vehicle satisfies a first preset condition for entering the charging function; if the indication information for entering the charging function indicates that the vehicle satisfies the first preset condition for entering the charging function, controlling the vehicle to start the charging function; when the vehicle starts the charging function, if the duration during which the power battery discharge power is greater than or equal to the output power of the charging device is greater than or equal to a first preset time length, controlling the electronic equipment of the vehicle that causes the power battery to discharge to be turned off; after controlling the electronic equipment of the vehicle to be turned off, if the duration during which the power battery discharge power is greater than or equal to the output power of the charging device is greater than or equal to a second preset time length, controlling the vehicle to exit the charging function, wherein the second preset time length is less than the first preset time length.

[0006] In some embodiments, the vehicle charging control method also includes: upon receiving an exit charging function indication information and / or the vehicle completes charging, controlling the vehicle to exit the charging function, wherein the exit charging function indication information is used to indicate whether the vehicle meets a second preset condition for exiting the charging function.

[0007] In some embodiments, controlling the vehicle to exit the charging function includes: updating the signal status of multiple first timing signals according to a first precondition to make the vehicle exit the charging function, wherein the first precondition is used to characterize the conditions that need to be met to update the signal status of the first timing signal.

[0008] In some embodiments, controlling the vehicle to start the charging function includes: updating the signal status of multiple second timing signals according to a second precondition so that the vehicle starts the charging function, and the second precondition is used to characterize the conditions that need to be met to update the signal status of the second timing signal.

[0009] In some embodiments, the vehicle charging control method also includes: when the vehicle starts the charging function, if the key state is switched from a locked state or an activated state to an ignition state, the vehicle is controlled to continue charging; if the key state is switched from a locked state or an activated state to a started state, the vehicle power system state is set to high-voltage power-on incomplete, and the vehicle is controlled to continue charging; the activation state is used to characterize that the vehicle's accessory circuit is in an on state.

[0010] In some embodiments, the vehicle charging control method further includes: heating the power battery if a power battery heating request signal is received; and controlling the vehicle to start a charging heating function when the temperature of the power battery is greater than or equal to a preset temperature.

[0011] In some embodiments, the control of the vehicle to start the charging and heating function includes at least one of the following: when the vehicle meets the conditions for starting the charging and heating function, receiving a charging pile output voltage indication signal, the charging pile output voltage indication signal is used to indicate whether the charging pile output voltage reaches the power battery voltage, if the charging pile output voltage indication signal indicates that the voltage output by the charging pile reaches the power battery voltage, then controlling the charging relay and the pre-charging relay to close in sequence; receiving voltage difference indication information, the voltage difference indication information is used to indicate whether the difference between the motor bus voltage and the power battery voltage is less than or equal to a preset voltage value, if the voltage difference indication information indicates that the difference between the motor bus voltage and the power battery voltage is less than or equal to the preset voltage value, then controlling the main relay to close and the pre-charging relay to disconnect, controlling the charging device to output a constant voltage to provide the energy required for power battery heating; controlling the positive temperature coefficient thermistor to close; and controlling the DC converter to enable.

[0012] In some embodiments, the vehicle charging control method also includes: in response to charging heating function abnormality information, controlling the vehicle to exit the charging heating function; the charging heating function abnormality information includes a charging pile output voltage indication signal indicating that the voltage output by the charging pile does not reach the power battery voltage, and a voltage difference indication information indicating that the difference between the motor bus voltage and the power battery voltage is always greater than a preset voltage value within a third preset time period.

[0013] In some embodiments, the control of the vehicle to exit the charging and heating function includes at least one of the following: disabling the DC converter from being enabled; controlling the positive temperature coefficient thermistor to be disconnected; when the positive temperature coefficient thermistor is disconnected, obtaining power battery current indication information, the power battery current indication information being used to indicate whether the power battery current is less than a preset current value, if the power battery current indication information indicates that the power battery current is less than the preset current value, controlling the power battery main relay and the DC charging relay to be closed in sequence; if the charging and heating is completed and no charging request information is received, sending a quick discharge instruction to the control drive motor controller.

[0014] To achieve the above-mentioned purpose, another aspect of an embodiment of the present application proposes a vehicle charging control device, which includes: a receiving module, which is used to receive an indication information for entering a charging function when the charging function of the vehicle is activated, and the indication information for entering a charging function is used to indicate whether the vehicle meets a first preset condition for entering the charging function; a first control module, which is used to control the vehicle to start the charging function if the indication information for entering the charging function indicates that the vehicle meets the first preset condition for entering the charging function; a second control module, which is used to control the electronic equipment of the vehicle that causes the power battery to discharge to be turned off when the vehicle starts the charging function, if the duration for which the power battery discharge power is greater than or equal to the output power of the charging device is greater than or equal to a first preset duration; a third control module, which is used to control the vehicle to exit the charging function after controlling the electronic equipment of the vehicle to be turned off, if the duration for which the power battery discharge power is greater than or equal to the output power of the charging device is greater than or equal to a second preset duration, wherein the second preset duration is less than the first preset duration.

[0015] To achieve the above-mentioned purpose, another aspect of an embodiment of the present application proposes an electronic device, which includes a memory and a processor, wherein the memory stores a computer program, and the processor implements the above-mentioned vehicle charging control method when executing the computer program.

[0016] To achieve the above objectives, another aspect of an embodiment of the present application provides a vehicle, which includes a vehicle charging control device of the above embodiment or an electronic device of the above embodiment.

[0017] The embodiments of the present application include at least the following beneficial effects:

[0018] The present application provides a vehicle charging control method, device, equipment and vehicle. In an embodiment of the present application, if the charging function of the vehicle is activated, an indication information for entering the charging function is received, and the indication information for entering the charging function is used to indicate whether the vehicle meets the first preset condition for entering the charging function; if the indication information for entering the charging function indicates that the vehicle meets the first preset condition for entering the charging function, the vehicle is controlled to start the charging function; when the vehicle starts the charging function, if the duration of the power battery discharge power being greater than or equal to the output power of the charging device is greater than or equal to the first preset time, the electronic equipment of the vehicle that causes the power battery discharge is controlled to be turned off; after controlling the electronic equipment of the vehicle to be turned off, if the duration of the power battery discharge power being greater than or equal to the output power of the charging device is greater than or equal to the second preset time, the vehicle is controlled to exit the charging function, wherein the second preset time is less than the first preset time. By controlling the vehicle to start the charging function when the vehicle meets the first preset condition for entering the charging function, it is avoided that the driving performance of the vehicle is affected by the random start of the charging function, thereby improving the driving safety of the vehicle; when the vehicle starts the charging function, if the duration of the power battery discharge power being greater than or equal to the output power of the charging device is greater than or equal to the first preset time, the electronic equipment of the vehicle that causes the power battery discharge is controlled to be turned off, so as to ensure the smooth charging of the power battery and avoid the safety hazards caused by excessive discharge of the battery. After controlling the electronic equipment of the vehicle to be turned off, if the duration of the power battery discharge power being greater than or equal to the output power of the charging device is greater than or equal to the second preset time, the vehicle is controlled to exit the charging function, which can avoid the power battery system from working under high load for a long time and the risk of overheating or damage, thereby improving the charging safety of hybrid vehicles.

[0019] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 is a schematic diagram of a power system structure of a hybrid vehicle provided by some embodiments of the present application;

[0022] Figure 2 is a flow chart of a vehicle charging control method provided by some embodiments of the present application;

[0023] Figure 3is a flow chart of starting a vehicle charging function provided by some embodiments of the present application;

[0024] Figure 4 is a schematic diagram of a signal trigger timing for starting a vehicle charging function provided in some embodiments of the present application;

[0025] Figure 5 is a schematic diagram of a signal trigger timing for exiting a vehicle charging function provided in some embodiments of the present application;

[0026] Figure 6 is a schematic block diagram of a module of a vehicle charging control device provided in some embodiments of the present application;

[0027] Figure 7 It is a schematic diagram of the hardware structure of an electronic device provided in some embodiments of the present application. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the reference to "embodiment" in this article means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of this phrase in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the embodiments of the present application. They are only examples of devices and methods consistent with some aspects of the embodiments of the present application as detailed in the attached claims.

[0029] It is understood that the terms "first", "second", etc. used in this application can be used to describe various concepts in this article, but unless otherwise specified, these concepts are not limited by these terms. These terms are only used to distinguish one concept from another concept. For example, without departing from the scope of the embodiment of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the words "if" and "if" as used herein can be interpreted as "at the time of" or "when" or "in response to determination".

[0030] The terms "at least one", "multiple", "each", "any", etc. used in this application, at least one includes one, two or more, multiple includes two or more, each refers to each of the corresponding multiple, and any refers to any one of the multiple.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0032] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0033] In order to make the inventive concept of the present application easy to understand, before describing the embodiments of the present application in detail, the English abbreviations (terms) / related concepts involved in the embodiments of the present application are first described. The English abbreviations (terms) / related concepts involved in the embodiments of the present application are subject to the following explanations.

[0034] HCU: HCU stands for Hybrid Control Unit, which refers to the vehicle controller.

[0035] MCU: MCU stands for Motor Control Unit, which refers to the drive motor controller.

[0036] BMS: BMS stands for Battery Management System, which refers to the battery management system.

[0037] EMS: EMS stands for Engine Management System, which refers to the engine controller.

[0038] TCU: TCU stands for Transmission Control Unit, which refers to the transmission controller.

[0039] BCM: BCM stands for Body Control Unit, which refers to the body controller.

[0040] SOC: SOC stands for State of Charge, which refers to the state of charge of the battery. It indicates the percentage of the battery's current remaining capacity to its total capacity when it is fully charged. The SOC value range is usually between 0% and 100%. 0% means that the battery is fully discharged and has no remaining power. 100% means that the battery is fully charged and has reached its maximum power.

[0041] At present, new energy hybrid vehicles have attracted more and more attention from manufacturers. Hybrid vehicles are cars that get power from at least two types of energy, among which the engine consumes fuel and the drive motor consumes electricity. Compared with the power system of traditional cars, the power system of hybrid vehicles adds high-voltage components such as drive motors, power batteries, and DCDC on the basis of the latter; hybrid vehicles have drive motors, power batteries, DCDC, etc., and the charging process involves the control of high-voltage components such as power batteries. A good control method can play a significant role in improving the safety and stability of vehicle charging.

[0042] The charging method for hybrid vehicles in the related art is mainly aimed at improving the charging efficiency, resulting in low charging safety of hybrid vehicles.

[0043] In view of this, the present application proposes a vehicle charging control method, device, equipment and vehicle. When the charging function of the vehicle is activated, the scheme receives indication information for entering the charging function, and the indication information for entering the charging function is used to indicate whether the vehicle meets the first preset condition for entering the charging function; if the indication information for entering the charging function indicates that the vehicle meets the first preset condition for entering the charging function, the vehicle is controlled to start the charging function; when the vehicle starts the charging function, if the duration for which the power battery discharge power is greater than or equal to the output power of the charging device is greater than or equal to the first preset time, the electronic equipment of the vehicle that causes the power battery discharge is controlled to be turned off; after controlling the electronic equipment of the vehicle to be turned off, if the duration for which the power battery discharge power is greater than or equal to the output power of the charging device is greater than or equal to the second preset time, the vehicle is controlled to exit the charging function, wherein the second preset time is less than the first preset time. By controlling the vehicle to start the charging function when the vehicle meets the first preset condition for entering the charging function, it is avoided that the driving performance of the vehicle is affected by the random start of the charging function, thereby improving the driving safety of the vehicle; when the vehicle starts the charging function, if the duration of the power battery discharge power being greater than or equal to the output power of the charging device is greater than or equal to the first preset time, the electronic equipment of the vehicle that causes the power battery discharge is controlled to be turned off, so as to ensure the smooth charging of the power battery and avoid the safety hazards caused by excessive discharge of the battery. After controlling the electronic equipment of the vehicle to be turned off, if the duration of the power battery discharge power being greater than or equal to the output power of the charging device is greater than or equal to the second preset time, the vehicle is controlled to exit the charging function, which can avoid the power battery system from working under high load for a long time and the risk of overheating or damage, thereby improving the charging safety of hybrid vehicles.

[0044] The method provided in the embodiment of the present application can be applied to the power system of a hybrid vehicle. Figure 1 , Figure 1It is a schematic diagram of the power system structure of a hybrid vehicle provided in some embodiments of the present application.

[0045] The power system is mainly composed of assembly components such as the engine, drive motor, power battery, gearbox, clutch, transmission mechanism, charger, DC converter, etc., as well as controllers corresponding to each power assembly component.

[0046] The controllers include engine controller, vehicle controller, drive motor controller, battery management system, transmission controller, DC converter, instrument display (IC, Instrument Cluster), body controller, charging device controller (CDU, Charging Device Control Unit), intelligent network system controller (INSC, Internet System Control), and air conditioning controller (HVAC, Heating, Ventilation and Air Conditioning).

[0047] Each controller communicates with each other through the CAN network. The HCU is the core controller of the vehicle, which is used to coordinate and control other subsystems of the vehicle. EMS is used to control the engine, MCU is used to control the drive motor, BMS is used to control the power battery, TCU is used to control the gearbox, DCDC is used for current conversion, IC is used to display various system information, CDU is used to control the operation of the charging device, HVAC is used to control the air conditioner, INSC is used to monitor the intelligent network information and inform the user of the vehicle charging status information through the application program, and BCM is used to control the on and off of the DC charging port ambient light.

[0048] In the embodiment provided in the present application, the BMS controls the closing and opening of the high-voltage relay according to the HCU signal instruction, determines whether the power battery has the charging condition, determines whether the power battery is charged, enables the charging device according to the HCU signal instruction, sends the power battery temperature to the HCU, receives the charging connection signal, etc. The HCU is responsible for determining whether the vehicle has the conditions to enter the charging function, and is responsible for completing the charging function startup and charging function exit, etc.

[0049] The implementation steps of a vehicle charging control method provided by an embodiment of the present application will be described in detail below with reference to the accompanying drawings.

[0050] Please refer to Figure 2 , Figure 2 Flowchart of a vehicle charging control method provided for some embodiments of the present application. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and, although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order than that shown here.

[0051] The method of the embodiment of the present application comprises the following steps:

[0052] Step 201: When a charging function of a vehicle is activated, receiving charging function entry indication information, where the charging function entry indication information is used to indicate whether the vehicle meets a first preset condition for entering the charging function;

[0053] Step 202: If the charging function entry indication information indicates that the vehicle meets the first preset condition for entering the charging function, controlling the vehicle to start the charging function;

[0054] Step 203: When the vehicle starts the charging function, if the duration of the power battery discharge power being greater than or equal to the output power of the charging device being greater than or equal to the first preset duration, then controlling the electronic equipment of the vehicle that causes the power battery discharge to be turned off;

[0055] Step 204: After the electronic equipment of the vehicle is controlled to be turned off, if the duration for which the power battery discharge power is greater than or equal to the output power of the charging device is greater than or equal to a second preset time, the vehicle is controlled to exit the charging function, wherein the second preset time is less than the first preset time.

[0056] In steps 201 to 204 shown in the embodiment of the present application, by controlling the vehicle to start the charging function when the vehicle meets the first preset condition for entering the charging function, the driving performance of the vehicle is avoided to be affected by the random start of the charging function, thereby improving the driving safety of the vehicle; when the vehicle starts the charging function, if the duration of the power battery discharge power being greater than or equal to the output power of the charging device is greater than or equal to the first preset time, the electronic equipment of the vehicle that causes the power battery discharge is controlled to be turned off, so as to ensure the smoothness of the power battery charging and avoid the safety hazards caused by excessive discharge of the battery. After the electronic equipment of the vehicle is controlled to be turned off, if the duration of the power battery discharge power being greater than or equal to the output power of the charging device is greater than or equal to the second preset time, the vehicle is controlled to exit the charging function, which can avoid the risk of overheating or damage of the power battery system working under high load for a long time, thereby improving the charging safety of the hybrid vehicle.

[0057] The specific implementation methods of the above steps are introduced below.

[0058] It should be understood that the vehicle charging control method involved in the technical solution of the present application is applicable to DC charging and AC charging of vehicles. For DC charging and AC charging, there may be inconsistencies in the control signal names and device names, but it will not affect its own operation and control method.

[0059] In step 201 , when a charging function of a vehicle is activated, charging function entry indication information is received, where the charging function entry indication information is used to indicate whether the vehicle meets a first preset condition for entering the charging function.

[0060] If the vehicle detects that the charging function is activated, it can determine whether to start the charging function. Among them, whether to start the charging function depends on whether the vehicle meets some conditions (first preset conditions) for entering charging. It should be understood that these conditions can be multiple conditions or one condition.

[0061] The vehicle can activate the charging function in a variety of ways, for example, the charging function can be activated through a physical button or switch; the charging function can be activated through the vehicle system, and the user can enter the charging management interface through the vehicle's central control touch screen to set up charging and activate the charging function, or use the voice control function of the vehicle information system to activate charging according to instructions; the charging function can be activated through a smart key or a mobile phone application, and the smart key can be used to remotely control the switch of the charging port cover and the activation of the charging function, or the charging function of the vehicle can be remotely controlled through a mobile phone application, and charging can be started or stopped without entering the vehicle. It should be understood that the activation method of the charging function is related to the vehicle model itself and the design of the charging system. This application does not limit the activation method of the charging function.

[0062] Whether the vehicle meets one or more conditions for entering charging can be indicated by charging function indication information. The charging function indication information can be a flag. For example, if the charging function indication information is "1", it means that the vehicle meets the conditions for entering charging. If the charging function indication information is "0", it means that the vehicle does not meet the conditions for entering charging.

[0063] Exemplarily, the conditions for a vehicle to enter charging may include:

[0064] 1) The HCU receives the DC charging gun electronic lock status sent by BCM and it is reliably locked;

[0065] 2) The gear position signal received by HCU from TCU is P gear or N gear;

[0066] 3) The HCU receives the DC charging port connection status sent by the CDU as fully connected;

[0067] 4) The HCU monitors that the high-voltage system has no faults and no faults that affect DC charging and power-on occur;

[0068] 5) HCU receives the power battery DC charging request signal BMSCrgeDCReq=1 sent by BMS, 1 indicates a charging request, 0 indicates no charging request;

[0069] 6) HCU receives BMSandCrgeShk=1 sent by BMS, 1 indicates that the handshake protocol between the power battery and the charging pile or external charging device is successful, and 0 indicates that the handshake protocol between the power battery and the charging pile or external charging device is unsuccessful;

[0070] 7) HCU receives feedback from CDU on temperature sensor 1 and temperature sensor 2 on the charging device, and both temperatures do not exceed 80°C (calibrable).

[0071] It should be understood that when all the above conditions are met, the HCU triggers the charging function to start. If the above conditions cannot be met simultaneously within a preset time range (for example, 10 seconds), the HCU will control the condition judgment of exiting the charging function, that is, DC charging fails, and then the HCU will tell the user the reason for the DC charging failure through the instrument display, INSC and mobile phone APP.

[0072] The embodiment provided in the present application receives charging function entry indication information when the charging function of the vehicle is activated, thereby indicating whether the vehicle meets the first preset condition for entering the charging function, thereby providing a basis for whether subsequent vehicles enter the charging function.

[0073] In step 202 , if the charging function entry indication information indicates that the vehicle meets the first preset condition for entering the charging function, the vehicle is controlled to start the charging function.

[0074] Exemplarily, when the vehicle meets the seven conditions provided above, the charging function can be triggered to start through the HCU.

[0075] In some embodiments, controlling the vehicle to start the charging function can be achieved by updating the signal states of multiple second timing signals according to the second precondition, wherein the second precondition can be used to characterize the conditions that need to be met for updating the signal states of the second timing signals.

[0076] Taking DC charging as an example, please refer to Figure 3 , Figure 3It is a flowchart of starting the vehicle charging function provided by some embodiments of the present application. When the vehicle meets the 7 charging entry conditions provided above, the HCU triggers the high-voltage power-on strategy control, that is, the HCU controls the high voltage of the vehicle power system, and controls the BMS to send the power battery high-voltage relay to close HVRelay=1 (1 means the high-voltage relay is closed, 0 means the high-voltage relay is disconnected); afterwards, the HCU sends an enable signal to the DCDC, DCDCEnble=1; controls the DCDC to send a working status signal to the HCU, DCDCSts=1; the HCU sends a DC charging permission signal to the BMS, CrgeDCAllow=1; further, controls the CDU to send a working status signal to the BMS, CrgerDCSts=1; controls the BMS to send a battery DC charging status signal to the instrument, BatCrgeDCSts=1; finally, the instrument lights up the DC charging status indicator, and the vehicle is in the DC charging process.

[0077] It should be understood that the above-mentioned enable signal DCDCEnble, working state signal DCDCSts, DC charging allow signal CrgeDCAllow, working state signal CrgerDCSts and battery DC charging state signal BatCrgeDCSts can be regarded as the second timing signals.

[0078] For details, please refer to Figure 4 , Figure 4 This is a schematic diagram of the signal trigger timing for starting the vehicle charging function provided by some embodiments of the present application. When the vehicle meets the conditions for entering the DC charging function, the HCU triggers the start of the DC charging function. The control method and control timing are as follows:

[0079] 1) HCU controls the high voltage of the vehicle power system and controls BMS to send the power battery high voltage relay closure HVRelay=1 to HCU (1 means the high voltage relay is closed, 0 means the high voltage relay is disconnected);

[0080] 2) When HVRelay=1, HCU sends an enable signal DCDCEnble=1 to DCDC (1 means enable, 0 means disable), and sends a signal CrgeDCAllow=1 to BMS (1 means DC charging is allowed, 0 means DC charging is not allowed);

[0081] 3) When DCDCEnble=1 and CrgeDCAllow=1, the HCU receives the DCDC converter status signal as being in operation, i.e., DCDCSts=1 (1 indicates the operating state, and 0 indicates the non-operating state);

[0082] 4) When DCDCSts=1, CDU sends a charging device status signal CrgerDCSts=1 to HCU and BMS (1 indicates that the charging device is in operation, and 0 indicates that the charging device is in non-operation);

[0083] 5) When CrgerDCSts=1, control the BMS to send the battery DC charging status signal to the instrument, BatCrgeDCSts=1.

[0084] The vehicle DC charging function startup completion judgment mark is: battery charging status signal BatCrgeDCSts=1, (0 means DC is not charged, 1 means DC is charging, 2 means DC charging is completed), HCU sends the DC charging indicator light signal CrgeDCLight=1 to the instrument (1 means the light is on, 0 means the light is off), and the instrument IC lights up the DC charging status indicator light.

[0085] It should be understood that the above HVRelay=1 is the second precondition of the enable signal DCDCEnble and the DC charging permission signal CrgeDCAllow (the second timing signal), that is, when HVRelay=1, the enable signal DCDCEnble is converted (updated) from disabled to enabled, that is, the enable signal changes from 0 to 1, and the DC charging permission signal CrgeDCAllow is converted (updated) from charging not allowed to charging allowed, that is, the DC charging permission signal changes from 0 to 1; DCDCSts=1 is the second precondition of the working state signal CrgerDCSts, that is, when DCDCSts=1, the working state signal CrgerDCSts is converted from not running to running, that is, the working state signal changes from 0 to 1. The above control timing steps and attached Figure 4 This has been described and demonstrated in detail and will not be repeated here.

[0086] Attached Figure 4 In the case where the vehicle meets the charging entry conditions, the HVRelay signal is updated to 1 (or a high level) to indicate the closed state of the power battery high-voltage relay. After HVRelay = 1, the DCDCEnble signal and the CrgeDCAllow signal are updated from the disabled and charging not allowed states to the enabled and charging allowed states respectively; after the DCDCEnble signal and the CrgeDCAllow signal are updated to the enabled and charging allowed states, the DCDCSts signal is updated from the non-working state to the working state; after the DCDCSts signal is updated to the working state, the CrgerDCSts signal is updated from the non-operating state to the operating state; further, the BatCrgeDCSts signal is updated to charging, and then, the CrgeDCLight is updated from the off state to the always-on state.

[0087] The embodiment of the present application realizes the vehicle starting charging function by updating the signal states of multiple second timing signals according to the second pre-condition, thereby ensuring the reliability and success rate of vehicle charging start-up and avoiding vehicle charging start-up failure caused by timing confusion.

[0088] In some embodiments, when the vehicle starts the charging function, if the key state is switched from the locked state or the activated state to the ignition state, the vehicle is controlled to continue charging; if the key state is switched from the locked state or the activated state to the started state, the vehicle power system state is set to high-voltage power-on incomplete, and the vehicle is controlled to continue charging; the activation state is used to characterize that the vehicle's accessory circuit is in an on state.

[0089] For example, when the vehicle is in the process of DC charging, when the key switches from Key-OFF (locked state) or Key-ACC (activated state) to Key-ON (ignition state), the vehicle continues to be controlled to charge; when the key switches to Key-Start (starting state), the vehicle is controlled to be unable to drive, that is, the power system state is non-PTReady (the high-voltage power-on of the vehicle power system is not completed), and the vehicle charging function is not affected at this time. In this way, the continuity and stability of vehicle charging are guaranteed.

[0090] In step 203, if the vehicle starts the charging function, and the duration during which the power battery discharge power is greater than or equal to the output power of the charging device is greater than or equal to a first preset duration, the electronic equipment of the vehicle that causes the power battery discharge is controlled to be turned off.

[0091] Taking DC charging as an example, when the vehicle key is in the power-off state Key-OFF or Key-ACC, the vehicle starts charging after the DC charging pile is connected to the vehicle charging device using a charging cable. During the vehicle charging process, if the vehicle's air conditioning system is turned on, when the power of the air conditioning system exceeds the output power of the charging device and causes the battery discharge time to reach 15 minutes (the first preset time, which can be flexibly set), the HCU controls the air conditioning to stop enabling and reminds the user through the instrument or mobile phone APP.

[0092] The electronic equipment of the vehicle that causes the power battery to discharge may include air conditioning systems, lighting systems, infotainment systems, and electric seats, etc., which are not limited in this application.

[0093] In the embodiment provided by the present application, when the charging function is started by the vehicle and the duration during which the power battery discharge power is greater than or equal to the output power of the charging device is greater than or equal to a first preset time period, the electronic equipment of the vehicle that causes the power battery discharge is controlled to be turned off, thereby ensuring the smooth charging of the power battery and avoiding the safety hazards caused by excessive discharge of the battery.

[0094] In step 204, after the electronic equipment of the vehicle is controlled to be turned off, if the duration for which the power battery discharge power is greater than or equal to the output power of the charging device is greater than or equal to a second preset time, the vehicle is controlled to exit the charging function.

[0095] Taking DC charging as an example, after the HCU controls the air conditioner to be disabled (turned off), if the power battery discharge power is still greater than or equal to the output power of the charging device, and its duration exceeds 5 minutes (the second preset time, which can be flexibly set), the HCU should control the vehicle to exit battery charging and inform the user through the instrument or mobile phone APP. In order to further ensure charging safety, the second preset time should be less than the first preset time.

[0096] It should be understood that after the electronic devices of the vehicle are turned off, the discharge power of the power battery is still greater than or equal to the output power of the charging device. This may be because the user manually turns on the electronic device after the electronic devices of the vehicle are turned off. For example, the HCU controls the air conditioner to be turned off, and the user manually turns it on. It is also possible that after the electronic devices of the vehicle are turned off, the user manually turns on another electronic device. For example, the HCU controls the air conditioner to be turned off, and the user turns on the infotainment system and lighting system.

[0097] The embodiment provided in the present application controls the vehicle to exit the charging function if the duration of the power battery discharge power being greater than or equal to the output power of the charging device is greater than or equal to a second preset time after the electronic equipment of the vehicle is controlled to be turned off. This can avoid the risk of overheating or damage caused by the power battery system operating under high load for a long time, thereby improving the charging safety of hybrid vehicles.

[0098] In some embodiments, when exit charging function indication information is received and / or the vehicle completes charging, the vehicle is controlled to exit the charging function, and the exit charging function indication information is used to indicate whether the vehicle meets a second preset condition for exiting the charging function.

[0099] If the vehicle completes charging and / or receives the instruction information for exiting the charging function, indicating that the vehicle meets the condition for exiting the charging function (the second preset condition), the vehicle is controlled to exit the charging function. It should be understood that the second preset condition can be multiple conditions or one condition.

[0100] Whether the vehicle meets one or more conditions for exiting the charging function can be indicated by exiting the charging function indication information. The exiting charging function indication information can be a flag. For example, if the exiting charging function indication information is "1", it indicates that the vehicle meets the conditions for exiting charging. If the exiting charging function indication information is "0", it indicates that the vehicle does not meet the conditions for exiting charging.

[0101] Exemplarily, the conditions for the vehicle to exit charging may include:

[0102] (1) The CDU detects that the DC charging port is not connected or abnormally connected;

[0103] (2) The HCU detects a fault in the vehicle power system, which affects charging, that is, a high-voltage power failure occurs and charging stops;

[0104] (3) The power battery charging request signal BMSCrgeDCReq=0 sent by the BMS to the HCU (1 indicates a DC charging request, 0 indicates no DC charging request);

[0105] (4) The HCU receives the DC charging pile status sent by the CDU as active stop;

[0106] (5) The CDU detects temperature sensor 1 or temperature sensor 2 on the DC charging device, and the temperature reported by one of the temperature sensors exceeds 80°C (calibrable);

[0107] (6) The battery DC charging permission signal CrgeDCAllow=0 sent by the HCU to the BMS, that is, the battery DC charging permission signal changes from charging permission to charging permission. After that, within 3 minutes (which can be calibrated), the CDU keeps sending the charging device status signal CrgerDCSts=0 (0 means not running, 1 means running);

[0108] (7) If the HCU determines that the power battery output current is greater than or equal to 1A (calibratable) and lasts for 15 minutes, the HCU prohibits the air conditioner high voltage from being enabled. After the HCU prohibits the air conditioner high voltage from being enabled, if the HCU determines that the power battery continues to output a current greater than or equal to 1A (calibratable) for 5 minutes, the HCU controls the charging process to exit;

[0109] (8) After the HCU sends the battery DC charging permission signal CrgeDCAllow=1 to the BMS, within a certain period of time (3 minutes, calibrable), the BMS continues to report BatCrgeDCSts=0 (0 means DC is not charging, 1 means DC is charging, and 2 means DC charging is completed);

[0110] (9) The signal CrgeDCMd_INSC sent by INSC to HCU is 1 (1 means immediate charging, 0 means timed charging) and the signal InstCrgeReq is 0 (0 means immediate DC charging stops, 1 means immediate DC charging starts);

[0111] (10) The signal CrgeDCMd_INSC sent by INSC to HCU is 0 (0 means timed charging, 1 means immediate charging) and the signal TimCrgeReq is 0 (0 means timed DC charging is stopped, 1 means timed DC charging is started);

[0112] (11) The HCU receives the charging port electronic lock status sent by the BCM as unlocked.

[0113] It should be understood that when any one of the above conditions is met, the HCU will trigger the charging function to exit. The HCU will then inform the user of the reason for the charging function exiting through the instrument display, INSC and mobile phone APP.

[0114] In some embodiments, controlling the vehicle to exit the charging function can be achieved by updating the signal states of multiple first timing signals according to a first precondition, where the first precondition is used to characterize the conditions that need to be met to update the signal states of the first timing signals.

[0115] Taking DC charging as an example, when the vehicle completes charging or meets any of the above charging exit conditions, perform the following steps:

[0116] (1) HCU sends an enable signal DCDCEnble=0 (1 means enable, 0 means disable) to DCDC, prohibiting DCDC from enabling;

[0117] (2) HCU sends an air conditioning enable signal CondACON=0 to HVAC (0 means the air conditioning is off, 1 means the air conditioning is on);

[0118] (3) When DCDCEnble = 0, the HCU sends a DC charging permission signal CrgeDCAllow = 0 (0 means DC charging is not allowed, 1 means DC charging is allowed) to the BMS, and the BMS and CDU control the DC charging pile to stop output;

[0119] (4) After CrgeDCAllow = 0, the CDU sends the charging device working status signal CrgerDCSts = 0 to the HCU (0 means not running, 1 means running)

[0120] (5) After CrgerDCSts=0, the BMS sends a power battery current signal to the HCU, and the HCU determines whether the power battery current BatCurt is less than 3.5A (calibrable);

[0121] (6) If BatCurt is less than 3.5A (calibrable), the HCU controls the vehicle high voltage to power off, and the HCU sends a command to the BMS to disconnect the main relay;

[0122] (7) Control the BMS to send a signal to the HCU that the power battery high-voltage relay is closed (HVRelay=0) (1 indicates that the high-voltage relay is closed, and 0 indicates that the high-voltage relay is open).

[0123] The HCU controls the high voltage power-down of the vehicle power system, and after a specified time, the vehicle controller enters sleep mode.

[0124] It should be understood that the above-mentioned enable signal DCDCEnble, air conditioning enable signal CondACON, DC charging allow signal CrgeDCAllow, charging device working state signal CrgerDCSts, power battery current signal BatCurt and power battery high-voltage relay closure HVRelay can be regarded as the first timing signal.

[0125] The vehicle charging function exit completion judgment mark is: the power battery high-voltage relay is closed HVRelay=0.

[0126] It should be understood that the above-mentioned DCDCEnble=0 is the first precondition of the DC charging enable signal CrgeDCAllow (first timing signal), that is, when DCDCEnble=0, the DC charging enable signal CrgeDCAllow is converted (updated) from allowing charging to not allowing charging, that is, the DC charging enable signal changes from 1 to 0; CrgeDCAllow=0 is the first precondition of the working state signal CrgerDCSts, that is, when CrgeDCAllow=0, the working state signal CrgerDCSts is converted from running to not running, that is, the working state signal changes from 1 to 0. The above-mentioned exit charging steps and attached Figure 5 This has been described and demonstrated in detail and will not be repeated here.

[0127] The embodiments of the present application provide Figure 5 In the case where the vehicle meets any charging exit condition, the DCDCEnble signal and the CondACON signal are updated from the enabled state and the open state to the disabled state and the closed state respectively; after the DCDCEnble signal is updated from the enabled state to the disabled state, the CrgeDCAllow signal is updated to the charging not allowed state; after the CrgeDCAllow signal is updated to the charging not allowed state, the CrgerDCSts signal is updated from the running state to the non-running state; thereafter, when the BatCurt signal indicates that the current is less than the specified value, the HVRelay signal is updated to 0, indicating that the main relay is disconnected.

[0128] The embodiment of the present application realizes the vehicle exit charging function by updating the signal status of multiple first timing signals according to the first pre-condition, thereby ensuring the reliability and success rate of the vehicle exit charging process, and avoiding the failure of vehicle charging exit caused by timing confusion and the resulting safety accidents.

[0129] In some embodiments, if a power battery heating request signal is received, the power battery is heated; when the temperature of the power battery is greater than or equal to a preset temperature, the vehicle is controlled to start a charging heating function.

[0130] For example, when the vehicle key is in the Key-OFF or Key-ACC position, the DC charging gun is connected, and the DC charging device is started, the vehicle will enter the DC charging process. When the power battery temperature is too low, the water heating equipment will automatically identify and send a power battery heating request signal, and then heat the power battery. After the power battery temperature reaches the required temperature, charging will be carried out. During the charging process, if a DC charging device or vehicle-related fault is detected, the vehicle will automatically exit the charging process.

[0131] In some embodiments, controlling the vehicle to start the charging and heating function includes at least one of the following:

[0132] When the vehicle meets the conditions for starting the charging heating function, the charging pile output voltage indication signal is received, and the charging pile output voltage indication signal is used to indicate whether the charging pile output voltage reaches the power battery voltage. If the charging pile output voltage indication signal indicates that the voltage output by the charging pile reaches the power battery voltage, the charging relay and the pre-charging relay are controlled to close in sequence;

[0133] receiving voltage difference indication information, the voltage difference indication information is used to indicate whether the difference between the motor bus voltage and the power battery voltage is less than or equal to a preset voltage value, and if the voltage difference indication information indicates that the difference between the motor bus voltage and the power battery voltage is less than or equal to the preset voltage value, controlling the main relay to close and the pre-charging relay to disconnect, controlling the charging device to output a constant voltage, and thus providing energy required for heating the power battery;

[0134] Control the positive temperature coefficient thermistor to close;

[0135] Controls the DC converter enable.

[0136] Exemplarily, the control method for triggering the vehicle to enter the charging heating mode may include one or more of the following steps:

[0137] 1) After the HCU determines that the charging and heating function conditions are met, it sends a "DC charging permission signal = 1" (1 means permission, 0 means non-permission);

[0138] 2) After the HCU determines that the "DC charging pile output voltage signal" reaches the current power battery voltage, it closes the DC charging relay and pre-charging relay in sequence, uses the DC charging pile for pre-charging, and jumps to step 4);

[0139] 3) If after 5 minutes, the HCU determines that the "DC charging pile output voltage signal" does not reach the current power battery voltage, the HCU controls the DC charging heating power-on function to exit;

[0140] 4) After closing the high-voltage pre-charging relay, the HCU determines that the voltage difference between the motor bus voltage and the power battery voltage is less than 20V (calibrable), and the HCU determines that the pre-charging is completed, and jumps to step 5); if the high-voltage pre-charging relay is closed for 5 minutes, the HCU determines that the voltage difference between the motor bus voltage and the battery voltage is still not less than 20V (calibrable), and the HCU controls the DC charging heating mode to power on and exit;

[0141] 5) HCU sends a CAN signal to BMS, BMS closes the main relay and disconnects the pre-charge relay in sequence, and CDU controls the constant voltage output of the charging device to provide energy for power battery heating;

[0142] 6) HCU sends a positive temperature coefficient thermistor closing signal to BMS, and BMS controls the positive temperature coefficient thermistor to close;

[0143] 7) HCU sends a signal to DCDC to control DCDC to enable, and the DC charging heating function control startup is completed.

[0144] In some embodiments, in response to charging heating function abnormality information, the vehicle is controlled to exit the charging heating function; the charging heating function abnormality information includes a charging pile output voltage indication signal indicating that the voltage output by the charging pile does not reach the power battery voltage, and a voltage difference indication information indicating that the difference between the motor bus voltage and the power battery voltage is always greater than a preset voltage value within a third preset time period.

[0145] For example, if after 5 minutes, the HCU determines that the "DC charging pile output voltage signal" does not reach the current power battery voltage, the HCU controls the DC charging heating power-on function to exit.

[0146] For example, if the high-voltage pre-charging relay is closed for 5 minutes, the HCU determines that the voltage difference between the motor bus voltage and the battery voltage is still not less than 20V (calibrable), and the HCU controls the DC charging heating mode to power on and exit.

[0147] In some embodiments, controlling the vehicle to exit the charging and heating function includes at least one of the following:

[0148] Disable the DC converter enable;

[0149] Control the positive temperature coefficient thermistor to disconnect;

[0150] When the positive temperature coefficient thermistor relay is disconnected, power battery current indication information is obtained, the power battery current indication information is used to indicate whether the power battery current is less than a preset current value, and if the power battery current indication information indicates that the power battery current is less than the preset current value, the power battery main relay and the DC charging relay are controlled to be closed in sequence;

[0151] If charging and heating are completed and no charging request information is received, a quick discharge instruction is sent to the control drive motor controller.

[0152] Exemplarily, in the DC charging heating mode, controlling the vehicle to exit the charging heating function includes the following steps:

[0153] 1) HCU sends a CAN signal to DCDC to disable DCDC;

[0154] 2) HCU sends a command to disconnect the positive temperature coefficient thermistor to BMS, and BMS disconnects the positive temperature coefficient thermistor;

[0155] 3) After the HCU determines that the DCDC working state is disabled, the HCU sends a "DC charging heating permission signal = 0" to the BMS (0 means DC charging heating is not allowed, 1 means DC charging heating is allowed);

[0156] 4) HCU determines that the power battery current is <3.5A (calibrable), and executes steps 5) and 6). If the power battery current is >3.5A (calibrable), wait for 5s and then execute steps 5) and 6);

[0157] 5) HCU controls to disconnect the power battery main relay and DC charging relay in sequence;

[0158] 6) If the HCU determines that the DC charging and heating is completed and there is no DC charging request, it sends a fast discharge instruction to the MCU. If the HCU determines that the DC charging and heating is completed and there is a DC charging request, it does not send a fast discharge instruction to the MCU;

[0159] 7) The DC charging heating function control exit is completed.

[0160] The embodiments provided in the present application improve the safety of the charging and heating function of the power battery by controlling the start and exit of charging and heating.

[0161] The above is an introduction to the vehicle charging control method embodiment of the present application.

[0162] The implementation of the vehicle charging control device provided in the embodiment of the present application will be described in detail below with reference to the accompanying drawings.

[0163] For the vehicle charging control method provided in the above embodiment, the embodiment of the present application also provides a vehicle charging control device for implementing the above method, such as Figure 6 As shown, Figure 6 This is a module schematic block diagram of a vehicle charging control device according to an embodiment of the present application. The vehicle charging control device 600 includes:

[0164] The receiving module 601 is used to receive charging function entry indication information when the charging function of the vehicle is activated, where the charging function entry indication information is used to indicate whether the vehicle meets a first preset condition for entering the charging function;

[0165] The first control module 602 is used to control the vehicle to start the charging function if the charging function entry indication information indicates that the vehicle meets the first preset condition for entering the charging function;

[0166] The second control module 603 is used to control the electronic device of the vehicle that causes the power battery to discharge to turn off if the discharge power of the power battery is greater than or equal to the output power of the charging device for a duration greater than or equal to a first preset duration when the vehicle starts the charging function;

[0167] The third control module 604 is used to control the vehicle to exit the charging function after the electronic equipment of the vehicle is controlled to be turned off, if the duration of the power battery discharge power being greater than or equal to the output power of the charging device is greater than or equal to a second preset time, wherein the second preset time is less than the first preset time.

[0168] It can be understood that the contents of the above method embodiments are all applicable to the present device embodiments, the functions specifically implemented by the present device embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0169] like Figure 7 As shown, the embodiment of the present application further provides an electronic device 700, the electronic device 700 includes a memory 701, one or more processors 702 ( Figure 7 Only one is shown) and a computer program stored in the memory 701 and executable on the processor 702. Among them: the memory 701 is used to store software programs and units, and the processor 702 executes various functional applications and data processing by running the software programs and units stored in the memory 701 to obtain the resources corresponding to the above-mentioned preset events. Optionally, the processor 702 implements the above-mentioned vehicle charging control method by running the above-mentioned computer program stored in the memory 701.

[0170] The memory 701, as a non-transitory computer-readable medium, can be used to store non-transitory software programs and non-transitory computer executable programs. In addition, the memory 701 may include a high-speed random access memory, and may also include a non-transitory memory, such as at least one disk storage device, a flash memory device, or other non-transitory solid-state storage device. In some embodiments, the memory 701 may optionally include a memory remotely arranged relative to the processor, and these remote memories may be connected to the processor via a network.

[0171] It can be understood that the contents of the above method embodiments are all applicable to the electronic device embodiment, the functions specifically implemented by the electronic device embodiment are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0172] The embodiment of the present application also provides a vehicle, which includes the above-mentioned vehicle charging control device or the electric drive assembly of the above-mentioned electronic device. Specifically, the vehicle can be a private car, such as a sedan, SUV, MPV or pickup truck. The vehicle can also be an operating vehicle, such as a van, bus, small truck or large trailer. The vehicle can also be a new energy vehicle. When the vehicle is a new energy vehicle, it can be a hybrid vehicle or a pure electric vehicle.

[0173] It can be understood that the contents of the above method embodiments are all applicable to the present vehicle embodiment, the functions specifically implemented by the present vehicle embodiment are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0174] An embodiment of the present application also provides a computer program product, which includes a computer program. When the computer program is executed by one or more processors, it can implement the steps of the vehicle charging control method as described above.

[0175] It can be understood that the contents of the above method embodiments are all applicable to the present computer program product, the functions specifically implemented by the present computer program product embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0176] The embodiments described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Those skilled in the art will appreciate that with the evolution of technology and the emergence of new application scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0177] Although specific embodiments are described herein, those of ordinary skill in the art will recognize that many other modifications or alternative embodiments are also within the scope of the present disclosure. For example, any of the functions and / or processing capabilities described in conjunction with a particular device or component may be performed by any other device or component. In addition, although various exemplary implementations and architectures have been described according to embodiments of the present disclosure, those of ordinary skill in the art will recognize that many other modifications to the exemplary implementations and architectures described herein are also within the scope of the present disclosure.

[0178] Some aspects of the present disclosure are described above with reference to the block diagram and flow chart of the system, method, system and / or computer program product according to the exemplary embodiments.It should be understood that the combination of one or more blocks in the block diagram and the flow chart and the blocks in the block diagram and the flow chart can be realized by executing computer executable program instructions respectively.Equally, according to some embodiments, some blocks in the block diagram and the flow chart may not need to be executed in the order shown, or may not need to be executed in full.In addition, additional components and / or operations beyond those components and / or operations shown in the blocks in the block diagram and the flow chart may be present in certain embodiments.

[0179] Therefore, the blocks in the block diagrams and flow charts support the combination of devices for performing the specified functions, the combination of elements or steps for performing the specified functions, and the program instruction devices for performing the specified functions. It should also be understood that each block in the block diagrams and flow charts and the combination of blocks in the block diagrams and flow charts can be implemented by a special-purpose hardware computer system or a combination of special-purpose hardware and computer instructions that performs a specific function, element or step.

[0180] The program modules, applications, etc. described herein may include one or more software components, including, for example, software objects, methods, data structures, etc. Each such software component may include computer-executable instructions that, in response to execution, cause at least a portion of the functionality described herein (e.g., one or more operations of the illustrative methods described herein) to be performed.

[0181] Software components can be encoded with any of various programming languages. An exemplary programming language can be a low-level programming language, such as an assembly language associated with a specific hardware architecture and / or an operating system platform. The software component comprising assembly language instructions may need to be converted to executable machine code by an assembler before being executed by hardware architecture and / or platform. Another exemplary programming language can be a higher-level programming language, which can be transplanted across multiple architectures. The software component comprising a higher-level programming language may need to be converted to an intermediate representation by an interpreter or a compiler before execution. Other examples of programming languages ​​include but are not limited to macro languages, shells or command languages, job control languages, scripting languages, database queries or search languages ​​or report writing languages. In one or more exemplary embodiments, the software component comprising the instruction of one of the above-mentioned programming language examples can be directly executed by an operating system or other software components, without first being converted into another form.

[0182] Software components may be stored as files or other data storage structures. Software components of similar type or related functions may be stored together, such as in a specific directory, folder, or library. Software components may be static (e.g., preset or fixed) or dynamic (e.g., created or modified at execution time).

[0183] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present application.

Claims

1. A vehicle charging control method, characterized in that: The following steps are involved: When a charging function of the vehicle is activated, receiving charging function entry indication information, wherein the charging function entry indication information is used to indicate whether the vehicle meets a first preset condition for entering the charging function; If the charging function entry indication information indicates that the vehicle meets the first preset condition for entering the charging function, controlling the vehicle to start the charging function; When the vehicle starts the charging function, if the duration of the power battery discharge power being greater than or equal to the output power of the charging device is greater than or equal to a first preset duration, controlling the electronic equipment of the vehicle that causes the power battery discharge to be turned off; After controlling the electronic equipment of the vehicle to be turned off, if the duration for which the discharge power of the power battery is greater than or equal to the output power of the charging device is greater than or equal to a second preset time length, the vehicle is controlled to exit the charging function, wherein the second preset time length is less than the first preset time length.

2. The vehicle charging control method according to claim 1, characterized in that: The method further comprises: When the exit charging function indication information is received and / or the vehicle completes charging, the vehicle is controlled to exit the charging function, wherein the exit charging function indication information is used to indicate whether the vehicle meets a second preset condition for exiting the charging function.

3. The vehicle charging control method according to claim 1 or 2, characterized in that: The controlling the vehicle to exit the charging function includes: According to a first pre-sequence condition, the signal states of the plurality of first timing signals are updated to enable the vehicle to exit the charging function, wherein the first pre-sequence condition is used to characterize the conditions that need to be met for updating the signal states of the first timing signals.

4. The vehicle charging control method according to claim 1, characterized in that: The controlling the vehicle to start the charging function includes: According to the second pre-sequence condition, the signal states of the plurality of second timing signals are updated so that the vehicle starts the charging function, wherein the second pre-sequence condition is used to characterize the conditions that need to be satisfied for updating the signal states of the second timing signals.

5. The vehicle charging control method according to claim 1, characterized in that: The method further comprises: In the case where the vehicle starts the charging function, if the key state is switched from the locked state or the activated state to the ignition state, the vehicle is controlled to continue charging; If the key status is switched from the locked state or the activated state to the started state, the vehicle power system status is set to high voltage power-on incomplete, and the vehicle is controlled to continue charging; The activation state is used to represent that the accessory circuit of the vehicle is in an on state.

6. The vehicle charging control method according to claim 1, characterized in that: The method further comprises: If a power battery heating request signal is received, the power battery is heated; When the temperature of the power battery is greater than or equal to a preset temperature, the vehicle is controlled to start a charging and heating function.

7. The vehicle charging control method according to claim 6, characterized in that: The controlling the vehicle to start the charging and heating function includes at least one of the following: When the vehicle meets the conditions for starting the charging heating function, a charging pile output voltage indication signal is received, wherein the charging pile output voltage indication signal is used to indicate whether the charging pile output voltage reaches the power battery voltage. If the charging pile output voltage indication signal indicates that the voltage output by the charging pile reaches the power battery voltage, the charging relay and the pre-charging relay are controlled to be closed in sequence; receiving voltage difference indication information, the voltage difference indication information being used to indicate whether the difference between the motor bus voltage and the power battery voltage is less than or equal to a preset voltage value, and if the voltage difference indication information indicates that the difference between the motor bus voltage and the power battery voltage is less than or equal to the preset voltage value, controlling the main relay to close and the pre-charging relay to disconnect, controlling the charging device to output a constant voltage to provide energy required for heating the power battery; Control the positive temperature coefficient thermistor to close; Controls the DC converter enable.

8. The vehicle charging control method according to claim 1, characterized in that: The method further comprises: In response to the abnormal information of the charging and heating function, controlling the vehicle to exit the charging and heating function; The charging heating function abnormality information includes a charging pile output voltage indication signal indicating that the voltage output by the charging pile does not reach the power battery voltage, and a voltage difference indication information indicating that the difference between the motor bus voltage and the power battery voltage is always greater than a preset voltage value within a third preset time length.

9. The vehicle charging control method according to claim 8, characterized in that: The controlling the vehicle to exit the charging and heating function includes at least one of the following: Disable the DC converter enable; Control the positive temperature coefficient thermistor to disconnect; When the positive temperature coefficient thermistor is disconnected, obtaining power battery current indication information, wherein the power battery current indication information is used to indicate whether the power battery current is less than a preset current value, and if the power battery current indication information indicates that the power battery current is less than the preset current value, controlling the power battery main relay and the DC charging relay to be closed in sequence; If charging and heating are completed and no charging request information is received, a quick discharge instruction is sent to the control drive motor controller.

10. A vehicle charging control device, characterized in that: The device comprises: A receiving module, used for receiving charging function entry indication information when the charging function of the vehicle is activated, wherein the charging function entry indication information is used for indicating whether the vehicle meets a first preset condition for entering the charging function; a first control module, configured to control the vehicle to start a charging function if the charging function entry indication information indicates that the vehicle meets a first preset condition for entering the charging function; A second control module is used for controlling the electronic equipment of the vehicle that causes the power battery to discharge to turn off if the duration during which the power battery discharge power is greater than or equal to the output power of the charging device is greater than or equal to a first preset duration when the charging function of the vehicle is started; The third control module is used to control the vehicle to exit the charging function after controlling the electronic equipment of the vehicle to be turned off, if the duration of the power battery discharge power being greater than or equal to the output power of the charging device is greater than or equal to a second preset time, wherein the second preset time is less than the first preset time.

11. An electronic device, characterized in that: The electronic device includes a memory and a processor, the memory stores a computer program, and the processor implements the vehicle charging control method according to any one of claims 1 to 9 when executing the computer program.

12. A vehicle, characterized in that: The vehicle includes the vehicle charging control device according to claim 10 or the electronic device according to claim 11.

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