A method for intelligently charging a vehicle starting battery

Abstract

The present invention provides a method for intelligently charging a vehicle starting battery, comprising the following steps: Step 1: Initiate a request to charge the starting battery; Step 2: Determine and decide whether to charge the starting battery with the power battery; if so, charge with the power battery until the first charging termination condition is met, and enter Step 4; if not, enter Step 3; Step 3: Conduct environmental detection to automatically determine whether to start the engine to charge the starting battery; if so, charge with the engine until the second charging termination condition is met, and enter Step 4; if not, enter Step 4; Step 4: End the charging. The present invention can enable the vehicle to autonomously start the engine to charge the starting battery, integrating vehicle automatic judgment and user judgment, and most likely ensuring that the CO content in a confined space will not increase during charging, or starting the engine to charge in scenarios where it is not suitable to start the engine due to flammable and explosive items, etc.

Description

Technical Field

[0001] The present invention relates to the technical field of automobiles, and particularly to a method for intelligently charging a vehicle starting battery (charging). Background Art

[0002] With the rapid development of automobiles towards intelligence and networking, the number of vehicle electronic and electrical devices has increased rapidly at the same time, resulting in a continuous increase in the static power consumption of the whole vehicle. Higher requirements are put forward for the capacity and life of the vehicle starting battery (storage battery), usually accompanied by an increase in the cost of the low-voltage power supply and a reduction in life. Some electrical equipment still has a large static function when the whole vehicle is in a dormant state, and the large static power consumption causes the vehicle starting battery to run out of power when the vehicle is in a long-term dormant state. The discharged voltage is lower than the normal starting voltage of the vehicle, resulting in the vehicle being unable to start normally, which seriously affects the normal use of customers. And frequent power loss will cause irreversible damage to the starting battery, severely shortening the life of the starting battery. In view of this problem of automobiles, there is an urgent need for an intelligent charging system that can compensate the power of the starting battery when the starting battery is in a discharged state, ensure the normal operation of the starting battery, and ensure the starting and normal use of the vehicle.

[0003] In view of the above problems, in the prior art, there is a method of periodically waking up the DC / DC converter. When the battery voltage is lower than the limit value, the DC / DC converter is started to charge the starting battery. This method will result in the voltage being normal at the Nth time, but the battery being discharged at the (N + 1)th time, and the problem cannot be fundamentally solved. Summary of the Invention

[0004] In view of the above-mentioned disadvantages of the prior art, the purpose of the present invention is to provide a method for intelligently charging a vehicle starting battery, so that the vehicle can automatically judge and execute two-stage charging of the power battery and the engine, and can not only remind and inform the user whether to start the engine to charge the vehicle starting battery through a human-machine interface (HMI) such as an instrument or a mobile phone APP, but also the vehicle can independently detect the environment and decide whether to start the engine to charge the starting battery.

[0005] To achieve the above object and other related objects, the present invention provides a method for intelligently charging a vehicle starting battery, including the following steps:

[0006] Step 1: Initiate a request to charge the starting battery;

[0007] Step 2: Judge and decide whether to charge the starting battery with the power battery; if so, charge with the power battery until the first charging termination condition is met, and enter Step 4; if not, enter Step 3;

[0008] Step 3: Perform environmental detection to automatically determine whether to start the engine to charge the starting battery; if so, the engine charges until the second charge termination condition is met, and then proceed to Step 4; if not, proceed to Step 4;

[0009] Step 4: End the charging.

[0010] In a preferred embodiment of the present invention, Step 1 includes: when the battery management system of the vehicle detects that the voltage of the starting battery is lower than a preset first voltage threshold or the preset regular charging time arrives, the starting battery management system wakes up the vehicle manager and sends a charging request to the vehicle manager.

[0011] In a preferred embodiment of the present invention, Step 1 further includes: after sending the charging request, the vehicle manager instructs to close the main contactor power supply relay of the vehicle to perform low-voltage power distribution for the starting battery.

[0012] In a preferred embodiment of the present invention, Step 2 includes: the vehicle manager detects whether the state of charge (SOC) of the power battery is not less than the SOC threshold; if so, the power battery charges the starting battery; if not, proceed to Step 3.

[0013] In a preferred embodiment of the present invention, the first charge termination condition in Step 2 includes at least one of the following situations: the user end instructs to terminate the charging, the charging time exceeds the preset charging duration, the voltage of the starting battery exceeds the preset second voltage threshold, the state of charge of the power battery is less than the SOC threshold, and there is a vehicle fault.

[0014] In a preferred embodiment of the present invention, Step 2 further includes: after the battery management system detects that the low-voltage power distribution for the starting battery is completed, the vehicle manager instructs the battery management system to control the closing of the main contactor of the power battery to perform high-voltage power distribution for the starting battery; after completing the high-voltage power distribution, monitor whether the first charge termination condition is met.

[0015] In a preferred embodiment of the present invention, in Step 3, before automatically determining whether to start the engine for charging through environmental detection, the vehicle manager detects whether the user end has preset to allow starting the engine for charging; if so, it instructs the engine to charge the starting battery; if not, the vehicle manager controls to perform environmental detection to automatically determine whether to start the engine for charging.

[0016] In a preferred embodiment of the present invention, in the third step, when performing automatic environmental detection and judgment, the vehicle manager or the engine controller commands to start the radar to monitor whether there are obstacles around the vehicle and the distance between the vehicle and the obstacles. When the distance ≥ threshold, it is determined that the vehicle is in an open space, and the engine is started to charge the starting battery; when the distance ≤ threshold, the camera is called and the sentry mode is started.

[0017] In a preferred embodiment of the present invention, in the third step, while starting the sentry mode, the vehicle manager sends the image of the vehicle surrounding environment to the user terminal and requests the user terminal to confirm whether to allow starting the engine to charge.

[0018] In a preferred embodiment of the present invention, in the third step, after starting the sentry mode, if the user terminal confirms to allow starting the engine to charge, the vehicle manager commands the battery management system to control the closing of the main contactor of the power battery to perform high-voltage power distribution for the starting battery; after completing the high-voltage power distribution, monitor whether the second charging termination condition is met.

[0019] In a preferred embodiment of the present invention, the second charging termination condition in the third step includes at least one of the following situations: the user terminal instructs to terminate charging, the charging time exceeds the preset charging duration, the charging is completed, and there is a vehicle fault.

[0020] Thus, the present invention provides a method for intelligently charging the starting battery of a vehicle, which can not only realize the vehicle's autonomous start of the power battery or the engine to charge the starting battery, but also comprehensively consider the vehicle's autonomous judgment and the user's judgment to maximally ensure that the starting battery of the vehicle will not be charged in scenarios that may cause the increase of CO content in a confined space or the surrounding environment is complex, such as there are flammable and explosive items and it is not suitable to start the engine, thereby avoiding potential risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a flowchart of a method for intelligently charging the starting battery of a vehicle according to the present invention.

[0022] Figure 2 It is a flowchart of a preferred specific embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0023] The following specific examples illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other. It should also be understood that the terms used in the embodiments of the present invention are for describing specific implementation manners and are not intended to limit the protection scope of the present invention. The test methods without specific conditions noted in the following embodiments are generally in accordance with conventional conditions or the conditions recommended by each manufacturer.

[0024] Please refer to Figures 1 to 2 . It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in this technology to understand and read, and are not intended to limit the limiting conditions under which the present invention can be implemented. Therefore, they do not have substantial technical significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for convenience of description and are not intended to limit the scope under which the present invention can be implemented. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope under which the present invention can be implemented.

[0025] The present invention provides a method for intelligently charging a vehicle starting battery, which can be used in a plug-in hybrid electric vehicle (PHEV) or other types of vehicles. The present invention uses a power battery to charge the starting battery regularly or actively to ensure that the starting battery maintains a certain power level. And when the power of the power battery is insufficient, the power of the power battery and the starting battery can be further maintained by starting the engine to charge the power battery and the starting battery. Since the present invention is usually applied to charging the starting battery when the vehicle is in a non-driving state (such as a stopped state), the issues of emissions and the environment need to be considered because starting the engine usually involves certain potential risks, which may cause CO poisoning or ignite flammable substances in the surrounding environment.

[0026] Generally, when the user is near the vehicle, risks can be identified manually, effectively preventing the occurrence of potential risks. However, when the user is not near the vehicle and the on-site risks cannot be identified, or the vehicle or the user cannot complete communication due to signal reasons, or the user does not give timely feedback on the execution action, starting the engine may cause potential risks, while not starting the engine may cause insufficient power supply for the entire vehicle, which may in turn affect the service life of the power battery and the starting battery.

[0027] Therefore, the method for intelligently charging the starting battery of a vehicle provided by the present invention can enable the vehicle to autonomously detect the environment and decide whether to start the engine to charge the vehicle. The present invention mainly includes the following steps (for reference, see Figure 1 ):

[0028] 1. Request for charging the starting battery;

[0029] 2. Power battery charging output;

[0030] 3. Automatic judgment of environmental detection;

[0031] 4. Sentinel mode confirmation;

[0032] 5. Engine charging output; and

[0033] 6. End of intelligent charging.

[0034] Specifically, the present invention provides a method for intelligently charging the starting battery of a vehicle, mainly including the following steps (for reference, see Figure 1 and Figure 2 ):

[0035] Step 1: Initiate a request to charge the starting battery.

[0036] When the battery management system of the vehicle detects that the voltage of the starting battery is lower than a preset first voltage threshold or the preset timed charging time arrives, the battery management system wakes up the vehicle manager and sends a charging request to the vehicle manager. After sending the charging request, the vehicle manager instructs the main contactor power supply relay of the vehicle to be closed to supply low voltage to the starting battery.

[0037] Step 2: Power battery charging output.

[0038] In this step, it is judged and decided whether to charge the starting battery with the power battery; if so, the power battery is charged until the first charging exit condition is met, and then enter Step 4; if not, enter Step 3.

[0039] Specifically, the vehicle manager detects whether the state of charge (SOC) of the power battery is not less than the SOC threshold. If so, the power battery is used to charge the starting battery; if not, the vehicle enters step three.

[0040] In this step, after the vehicle manager determines and instructs to charge the starting battery with the power battery, the battery management system first detects whether the low-voltage power distribution to the starting battery in step one is completed. If the low-voltage power distribution is completed, the vehicle manager instructs the battery management system to control the closing of the main contactor of the power battery to perform high-voltage power distribution to the starting battery; after the high-voltage power distribution is completed, it is monitored whether the first condition for exiting the charging is met.

[0041] The first condition for exiting the charging includes at least one of the following situations: the user terminal indicates to exit the charging, the charging time exceeds the preset charging duration, the voltage of the starting battery exceeds the preset second voltage threshold, the state of charge of the power battery is less than the SOC threshold, and there is a vehicle fault.

[0042] Step three: Determine and decide whether to charge the starting battery with the engine. If so, the engine charges until the second condition for exiting the charging is met, and then enter step four; if not, enter step four. This step includes an environmental detection automatic judgment step and a sentry mode confirmation step.

[0043] In this step, first, the vehicle manager determines and decides whether to charge the starting battery with the engine. The vehicle manager detects whether the user terminal has preset to allow the engine to charge. If so, it instructs the engine to charge the starting battery. If the vehicle manager does not detect that the user terminal has preset to allow the engine to charge, it performs an environmental detection automatic judgment (step) to determine whether to start the engine for charging.

[0044] When performing the environmental detection automatic judgment, the vehicle control unit (VCU) or the engine control module (ECM) of the vehicle notifies the autonomous driving domain controller (ADCU) to start the radar to monitor whether there are obstacles around the vehicle and the distance between the vehicle and the obstacles. When the distance ≥ the threshold value, it is determined that the vehicle is in an open space, and the engine is started to charge the starting battery; when the distance ≤ the threshold value, the camera is called to start the sentry mode (step).

[0045] When starting the sentry mode, the vehicle manager sends a 360-degree image of the vehicle's surrounding environment to the user terminal and requests the user terminal to confirm whether to allow the engine to charge. To minimize the increase in the vehicle's energy consumption each time the camera is enabled, the radar and the camera need to be regionally associated in the function design. When the user terminal selects to call the sentry image, it can choose to view the image of a specific abnormal area or the 360-degree image of the whole vehicle to confirm the vehicle's environmental status and further select whether to start the engine.

[0046] The camera and radar can be designed to be responsible for monitoring the front, rear, left, and right areas of the vehicle respectively, and their respective heights and angles can be adjusted simultaneously according to different specific vehicles. The camera and radar communicate with the ASDM through the Local Interconnect Network (LIN). The ASDM collects the data of the camera and radar. After processing the distance and image data, the ASDM sends the image data to the APP and the distance to the ECM as needed. The front, rear, left, and right areas can be partitioned according to the positions of the radar and camera. The user can select to view the overall image or the image of a partial area through an HMI device such as a mobile phone APP. This part of the function is specifically completed by the ASDM. Specifically, the ASDM sets the partitions; the installation positions of the radar and camera, with the radar mainly for the front and rear (distance), and the camera for the left, right, front, and rear (image).

[0047] The user side can confirm to send relevant information to the vehicle manager VCU, for example, through a mobile phone APP. The vehicle manager VCU controls the vehicle to start the engine for intelligent charging. When the user side does not accept starting the sentry confirmation, or does not start the engine after confirmation, or the user feedback times out, the engine intelligent charging is not started.

[0048] After starting the sentry mode, if the user side confirms to allow starting the engine for charging, the vehicle manager instructs the battery management system to control the closing of the main contactor of the power battery to perform high-voltage power distribution for the starting battery. After completing the high-voltage power distribution, it monitors whether the second condition for exiting the charging is met.

[0049] The second condition for exiting the charging includes at least one of the following situations: the user side indicates to exit the charging, the charging time exceeds the preset charging duration, the charging is completed, and there is a vehicle fault.

[0050] When one of the following situations occurs, the vehicle manager VCU controls to exit the engine charging state and enter the power battery charging state.

[0051] 1. The voltage of the starting battery ≥ the threshold value;

[0052] 2. The power of the power battery ≥ the threshold value;

[0053] 3. The engine starting time ≥ the threshold value;

[0054] 4. The user stops charging (APP, vehicle unlocking...);

[0055] 5. The vehicle fault does not allow the engine to start, etc.

[0056] Step Four: End the charging.

[0057] When one of the following situations occurs, the vehicle exits the intelligent charging state of the power battery.

[0058] 1. The voltage of the starting battery ≥ the preset threshold value;

[0059] 2. The user issues a stop charging command by using a mobile phone APP or unlocking the vehicle, etc.

[0060] 3. The power battery power ≤ threshold and the condition for starting the engine to charge is not met.

[0061] 4. The vehicle failure does not allow high voltage to be applied.

[0062] Figure 2 This is a flowchart of charging the starting battery for a preferred embodiment of the present invention. In this embodiment, the starting battery management system (Lv_BMS) of the vehicle periodically (for example, about 4 hours) detects the voltage of the starting battery. When it detects that the voltage of the starting battery is lower than the threshold (for example, it can be set to 13V) or the timed charging time arrives, it is determined that the charging request is established. The starting battery management system wakes up relevant controllers such as the vehicle manager (VCU), battery management system (BMS), engine controller (ECM), and DC-DC converter (DCDC), and sends a charging request to the vehicle manager. Among them, the starting battery management system can wake up controllers such as VCU through the sleep wake-up mechanism (general communication mechanism) of, for example, the controller area network (CAN) bus.

[0063] After sending the charging request, the vehicle manager instructs to close the main contactor power supply relay of the vehicle to supply low voltage to the starting battery (i.e., low-voltage power distribution). The vehicle manager VCU continues to judge and decide whether to charge the starting battery with the power battery. The battery management system will measure the state of charge (SOC) of the power battery and send the SOC information to the vehicle manager VCU or the engine controller ECM to judge the threshold and start or stop charging. If the SOC of the power battery ≥ threshold, the starting battery is charged with the power battery; when the power battery power < threshold, the vehicle has no failure and does not meet the condition for exiting charging (starting battery voltage ≤ threshold and charging time ≤ threshold), the vehicle manager will start the engine to charge the starting battery. The threshold of the SOC of the power battery here, the threshold of the starting battery voltage, and the threshold of the charging time are all values that can be set according to the conditions of the corresponding vehicle components.

[0064] After the vehicle completes low-voltage power distribution, the vehicle control unit (VCU) detects the state of charge (SOC) of the power battery, the vehicle status (whether it is in the driving state), the over-the-air (OTA) status (whether it is in the OTA upgrade state), and the fault status. When the condition for applying high voltage is met, the main contactor of the power battery is closed to apply high voltage, enabling high-voltage power supply to the starting battery. The conditions for applying high voltage include no faults in the battery management system (BMS), VCU, engine control module (ECM), etc. that affect the application of high voltage, the vehicle not being in the driving state, the vehicle not being in the OTA upgrade state, no interlock and insulation faults in the vehicle, etc.

[0065] During the process of the power battery charging the starting battery, the VCU will dynamically monitor the state of the power battery output for charging. When the starting battery management system detects that the voltage of the starting battery exceeds the threshold (e.g., it can be set to 13.4V) (in this case, it can be determined that the charging (supplementary charging) is completed), or the charging time exceeds the preset duration (e.g., 30 minutes), or a fault occurs, the power battery charging state will be exited.

[0066] When the VCU determines and decides not to output charging from the power battery, or when the power battery charging is exited due to insufficient SOC of the power battery during the power battery charging process, the VCU will further determine whether there is a preset in the human-machine interface (HMI) at the user end to allow starting the engine to charge the starting battery. If not, the charging process ends; if there is a preset, the VCU will send the whole vehicle or partial image information and radar ranging information to the user end (such as HMI devices like mobile phone APPs), and the user end will feedback whether to allow starting the engine for charging. If the user end does not reply to allow engine charging within the preset time, the charging process ends; if the user end replies to allow engine charging within the preset time, the VCU will instruct to perform low- and high-voltage power distribution for the starting battery and send an instruction to the ECM to start the engine to charge the starting battery. Once the high- and low-voltage power distribution is successful, the engine will be started. If the engine fails to start successfully, the current charging process will be exited. If the engine starts successfully, the engine will charge the starting battery.

[0067] During the process of the engine charging the starting battery, the VCU will dynamically monitor the state of the engine output for charging. When conditions for exiting the engine charging state of the starting battery are met, such as vehicle faults, or charging completion (the SOC of the starting battery reaches the preset threshold indicating charging completion), or the charging time (e.g., it can be preset to 30 minutes) arrives, etc., the state of the engine charging the starting battery will be exited, and the current charging process will end.

[0068] In a plug-in hybrid electric vehicle (PHEV), the power battery can be used to regularly or actively charge the starting battery to ensure that the starting battery has a certain amount of power. And when the power battery has insufficient power, the engine can be started to charge the power battery and the starting battery to further maintain the power of the power battery and the starting battery. However, due to emissions and environmental issues, starting the engine usually comes with certain potential risks, which may cause CO poisoning or ignite flammable substances in the surrounding environment.

[0069] The present invention has at least adopted the following innovative designs:

[0070] 1. At the human-machine interface (HMI) end, the user can preset whether to start the ranging function.

[0071] 2. At the HMI end, the user can preset whether to start the sentry detection.

[0072] 3. Before starting to charge (replenish power) the starting battery by the engine, it is detected by the ranging function (i.e., automatically judged by environmental detection) whether the vehicle is in an enclosed space to prevent the CO content from being too high.

[0073] 4. Through the sentry mode, the scenes around the vehicle are informed to the user through the HMI end (such as a mobile phone APP) for the user to accurately decide whether to start the engine.

[0074] 5. Four levels of start priorities are set for the power battery replenishment of the vehicle, self-starting the engine for replenishment, starting the engine for replenishment by ranging, and starting the engine by the sentry. The priority order is defined as: power battery replenishment > self-starting the engine for replenishment > starting the engine for replenishment by ranging > starting the engine by the sentry.

[0075] Through the above measures, the present invention can realize the vehicle's self-starting / starting the engine for battery replenishment, comprehensive judgment and user judgment, and can most likely ensure that when intelligently charging (replenishing power) the starting battery, it will not cause the CO content in the enclosed space to rise, or charge in scenarios where the surrounding environment is complex and it is not suitable to start the engine due to flammable and explosive items, so as to avoid potential risks.

[0076] In summary, the present invention provides a method for intelligently replenishing power to the vehicle's starting battery, which can not only realize the vehicle's self-starting the power battery or the engine to replenish power to the starting battery, but also comprehensively consider the vehicle's self-judgment and user judgment to most likely ensure that the vehicle's starting battery is not replenished in scenarios that may cause the CO content in the enclosed space to rise, or the surrounding environment is complex, such as in the presence of flammable and explosive items where it is not suitable to start the engine, thereby avoiding potential risks.

[0077] The above embodiments are only illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A method for intelligently charging a vehicle starting battery, comprising the following steps: Step 1: Initiate a request to charge the starting battery; Step 2: Determine and decide whether to charge the starting battery with a power battery; If yes, charge with the power battery until the first charging exit condition is met, and enter Step 4; if no, enter Step 3; Step 3: Conduct environmental detection to automatically determine whether to start the engine to charge the starting battery; If yes, charge with the engine until the second charging exit condition is met, and enter Step 4; If no, enter Step 4; Step 4: End the charging; Among them, Step 2 includes: the vehicle manager detects whether the state of charge (SOC) of the power battery is not less than the SOC threshold of the battery. If yes, charge the starting battery with the power battery; if no, enter Step 3; In Step 3, before automatically determining whether to start charging with the engine through environmental detection, the vehicle manager detects whether the user terminal has preset to allow starting the engine to charge. If yes, instruct the engine to charge the starting battery; if not, the vehicle manager controls to conduct environmental detection to automatically determine whether to start the engine to charge; Set the priority order of charging the starting battery as: power battery charging > autonomous engine start charging > ranging engine start charging > sentry engine start charging; among them, the sentry engine start charging means that after environmental detection does not automatically start the engine to charge the starting battery, and after the user has viewed the 360-degree image around the vehicle and confirmed, it is allowed to start the engine to charge and perform high-voltage power distribution for the starting battery; The ranging engine start charging means that during automatic environmental detection, after the vehicle manager or the engine controller instructs the radar to monitor whether there are obstacles around the vehicle and the distance between the vehicle and the obstacles, it is allowed to start the engine to charge the starting battery.

2. The method for intelligently charging a vehicle starting battery according to claim 1, characterized in that: Step 1 includes: when the battery management system of the vehicle detects that the voltage of the starting battery is lower than the preset first voltage threshold or the preset regular charging time arrives, start the battery management system to wake up the vehicle manager and send a charging request to the vehicle manager.

3. The method for intelligently charging a vehicle starting battery according to claim 2, wherein: Step 1 also includes: after sending the charging request, the vehicle manager instructs to close the main contactor power supply relay of the vehicle to perform low-voltage power distribution for the starting battery.

4. The method for intelligently charging a vehicle starting battery according to claim 1, wherein: The first charging exit conditions in Step 2 include at least one of the following situations: the user terminal indicates to exit charging, the charging time exceeds the preset charging duration, the voltage of the starting battery exceeds the preset second voltage threshold, the state of charge of the power battery is less than the SOC threshold, and there is a vehicle fault.

5. The method for intelligently charging a vehicle starting battery according to claim 4, wherein: Step 2 also includes: after the battery management system detects that the low-voltage power distribution for the starting battery is completed, the vehicle manager instructs the battery management system to control to close the main contactor of the power battery to perform high-voltage power distribution for the starting battery; after completing the high-voltage power distribution, monitor whether the first charging exit condition is met.

6. The method for intelligently charging a vehicle starting battery according to claim 1, characterized in that: In step three, when automatically judging the environmental detection, the vehicle manager or the engine controller commands to start the radar to monitor whether there are obstacles around the vehicle and the distance between the vehicle and the obstacles. When the distance ≥ threshold, it is determined that the vehicle is in an open space, and the engine is started to charge the starting battery; when the distance ≤ threshold, the camera is called to start the sentry mode.

7. The method for intelligently charging a vehicle starting battery according to claim 6, wherein: In step three, while starting the sentry mode, the vehicle manager sends the surrounding environment image of the vehicle to the user terminal and requests the user terminal to confirm whether to allow starting the engine to charge.

8. The method for intelligently charging a vehicle starting battery according to claim 7, characterized in that: In step three, after starting the sentry mode, if the user terminal confirms to allow starting the engine to charge, the vehicle manager commands the battery management system to control the closing of the main contactor of the power battery to perform high-voltage power distribution for the starting battery; after completing the high-voltage power distribution, monitor whether the second charging termination condition is met.

9. The method for intelligently charging a vehicle starting battery according to claim 6, wherein: The second charging termination condition in step three includes at least one of the following situations: the user terminal indicates to terminate charging, the charging time exceeds the preset charging duration, the charging is completed, and there is a vehicle fault.

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