Method for detecting external load of automobile emergency starting power supply

Abstract

The invention discloses a method for detecting an external load of an automobile emergency starting power supply, and relates to the technical field of automobile emergency starting, in the step S2, after an output circuit is closed, a system monitors dynamic current and load state changes, extracts related transmission data and calculates an abnormal coefficient, and once the abnormal coefficient exceeds a preset abnormal threshold value, the system is started; and the system sends a start stopping instruction in time, so that excessive loss of a storage battery or a starting power supply is further avoided, and the safety of equipment and a vehicle is effectively guaranteed. And S3 and S4, constructing a starting result recognition model by using the change coefficient and the abnormal coefficient, and fitting a judgment index after performing linear normalization processing on the data by virtue of a deep learning technology. By comparing the judgment index Pdzs with the qualified threshold value, the system can intelligently judge whether starting is successful or not, automatically control power output, avoid excessive current output and prolong the service life of equipment.

Description

Technical Field

[0001] The invention relates to the technical field of automobile emergency starting, in particular to a method for detecting an external load of an automobile emergency starting power supply. Background Art

[0002] As automotive electrical systems become increasingly complex, the importance of emergency starting power supplies in situations where the vehicle battery is low on power or cannot be started due to low temperatures has become increasingly prominent. In order to achieve stable and safe starting, the core of the emergency starting power supply is to detect the status of the external load (i.e., the vehicle battery) and its connection status, and intelligently identify whether the battery is compatible and can be started safely. Therefore, research on external load detection of automotive emergency starting power supplies has gradually become a key technical requirement in the industry to improve equipment safety and intelligence.

[0003] The above-mentioned status and shortcomings are mainly due to the single detection method and the lack of adaptive adjustment ability of the starting power supply. In actual applications, the status of vehicle batteries varies greatly. If the detection system cannot accurately identify the load condition or the starting status of the vehicle, it is very easy to cause the system to try to start multiple times in a short period of time, causing excessive consumption of the battery and the starting power supply. When this happens, in addition to increased equipment loss, it may also cause the starting power supply to overheat, and there may even be a risk of excessive battery discharge, which seriously affects the service life and safety of the equipment and vehicle. Therefore, improving the accuracy and intelligence level of external load detection of emergency starting power supplies has become an urgent problem to be solved. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a method for detecting an external load of an automobile emergency starting power supply, which solves the problems in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A method for detecting an external load of an automobile emergency starting power supply comprises the following steps:

[0006] S1. After the emergency starting power supply is turned on, the output circuit is disconnected and the jumper voltage Ddy is detected to identify the jumper connection status and load type. Based on the jumper connection status and load type, it is determined whether the output circuit is allowed to be closed;

[0007] S2. Based on the constraint on the closed output circuit in S1, if the closed output circuit is allowed, the vehicle battery enters the starting phase, and performs real-time dynamic current monitoring and load state change detection to obtain relevant transmission data information, and constructs an abnormal coefficient Ycxs based on the relevant transmission data information. If the abnormal coefficient Ycxs exceeds the preset abnormal threshold K, a stop start instruction is issued;

[0008] S3. Based on the abnormal coefficient Ycxs value, continue to analyze the symbolic content of successful startup to analyze and obtain the variation coefficient Bhxs;

[0009] S4. Use deep learning technology to build a startup result recognition model, input the variation coefficient Bhxs and the abnormal coefficient Ycxs into the startup result recognition model, and after linear normalization, fit and construct the judgment index Pdzs;

[0010] S5. Preset a qualified threshold value Q, and compare and analyze it with the determination index Pdzs to determine whether the current emergency starting power supply can successfully start the vehicle engine.

[0011] Preferably, the specific steps of S1 include:

[0012] S11. When the emergency starting power supply is turned on, disconnect the output circuit between the battery of the emergency starting power supply and the positive electrode jumper, and disable the small current test charging circuit and the large current test charging circuit;

[0013] S12. Preliminarily identify and judge the current connection status and load type of the jumper clamp by continuously detecting the jumper clamp voltage Ddy between the positive and negative poles of the jumper clamp; wherein, if the value of the jumper clamp voltage Ddy is within [8V, 16V], it is judged that the jumper clamp is connected to the vehicle's 12V battery, and the 12V load indicator light is turned on to prompt the user; if the value of the jumper clamp voltage Ddy is within [18V, 30V], it is judged that the jumper clamp is connected to the vehicle's 24V battery, and the 24V load indicator light is turned on to prompt the user; if the value of the jumper clamp voltage Ddy is above 30V, it is judged that the jumper clamp is connected to an overvoltage load, and a buzzer is triggered to prompt the user; if the value of the jumper clamp voltage Ddy is within [0V, 8V), it is judged that there are multiple judgment results for the external load connected to the jumper clamp, and the multiple judgment results include no connection, short circuit and capacitive load.

[0014] Preferably, the specific step S1 also includes:

[0015] S13. When there are multiple judgment results for the external load connected to the jumper clip, a low current test charging circuit is used to send current to the vehicle battery to detect the voltage state of the jumper clip. The specific contents are as follows:

[0016] S131, if the jump clamp voltage Ddy is equal to the battery voltage of the emergency starting power supply, it is determined that the jump clamp is not connected to the vehicle battery;

[0017] s132. If the value of the jumper voltage Ddy is still within [0V, 8V), the jumper connection is judged to be a short circuit or a capacitive load.

[0018] Preferably, the specific step S1 also includes:

[0019] S14. Based on the judgment result in S13, when it is detected that the value of the jumper clamp voltage Ddy is still within [0V, 8V), a high current test charging circuit is used to send current to the vehicle battery, and the voltage state of the jumper clamp is continuously detected at intervals of 10 milliseconds. The specific contents are as follows:

[0020] S141, if the value of the jumper voltage Ddy is still within [0V, 8V), the jumper connection is judged to be short-circuited, and the buzzer is triggered to prompt the user;

[0021] S142, if the jumper voltage Ddy continues to rise, it is determined that the jumper connection is a capacitive load;

[0022] S15, based on the judgment result of S12 that the jumper clip is connected to an overpressure load and the judgment result of S141, trigger buzzers of different frequencies to remind the user of the jumper clip connection status and load type of the current vehicle, and the system will not allow the output circuit to be closed, and will not execute the output circuit closing instruction between the battery in the emergency starting power supply and the positive jumper clip;

[0023] S16. Based on the judgment results of S131 and S142, the system will not allow the output circuit to be closed, and will not execute the output circuit closing instruction between the battery in the emergency starting power supply and the positive electrode jumper.

[0024] Preferably, the specific steps of S2 include:

[0025] S21. Based on the constraint on the closed output circuit in S1, if the jumper clip is correctly connected to the positive and negative poles of the vehicle battery, no short circuit occurs, and the voltage of the vehicle battery matches that of the emergency starting power supply, the output circuit will be closed and the vehicle battery will enter the starting phase.

[0026] S22. During the starting process, real-time monitoring of dynamic current and detection of load state changes are performed to obtain relevant transmission data information, wherein the relevant transmission data information includes a voltage difference ΔV in the vehicle battery before and after starting, a difference ΔI in the output current of the emergency starting power supply before and after starting, a jump clamp voltage Ddy measured during a corresponding monitoring period, and an output current value I provided by the emergency starting power supply to the vehicle battery during the corresponding monitoring period;

[0027] S23. Based on the relevant transmission data information, the health status of the vehicle battery is analyzed, and after linear normalization processing, an abnormal coefficient Ycxs is constructed. The abnormal coefficient Ycxs is obtained by the following formula:

[0028]

[0029] In the formula, Dyj represents the equivalent internal resistance, Bdz represents the load fluctuation variance, a1 and a2 are weight values, P represents the first correction constant, and the specific values ​​of a1 and a2 are set by the user according to the situation.

[0030] Preferably, the specific step S2 also includes:

[0031] S24. The equivalent internal resistance Dyj is obtained by the following formula:

[0032]

[0033] In the formula, ΔV represents the voltage difference in the vehicle battery before and after starting; ΔI represents the difference in the emergency starting power supply output current before and after starting;

[0034] S25. The load fluctuation variance Bdz is obtained by the following formula:

[0035]

[0036] Where N is the monitoring period, n = 1, 2, 3, ..., N, Ddy n It is expressed as the voltage of the grounding clamp measured during the nth monitoring period. Expressed as the average bridge voltage, I n It is represented by the output current value provided by the emergency starting power supply to the vehicle battery during the nth monitoring period, and I is represented by the average output current value;

[0037] S26. By comparing the abnormal coefficient Ycxs with the preset abnormal threshold K, the stability of the vehicle battery during the current startup process is determined:

[0038] If the abnormal coefficient Ycxs exceeds the preset abnormal threshold K, it is judged that the vehicle battery is not in a stable state during the current startup process, and a stop start command will be issued;

[0039] If the abnormal coefficient Ycxs does not exceed the preset abnormal threshold K, it is judged that the vehicle battery is temporarily in a stable state during the current startup process, and no stop start command will be issued to the outside at this time.

[0040] Preferably, the specific steps of S3 include:

[0041] S31. When the stop start command is not received, continue to analyze the signal content of successful start, and calculate the change coefficient Bhxs according to the change of the emergency starting power supply output current and the vehicle battery voltage. The change coefficient Bhxs is obtained by the following formula:

[0042]

[0043] Wherein, Dzs represents the battery voltage increase rate, Lzs represents the output current decrease rate, b1 and b2 are weight values, and the specific values ​​of b1 and b2 are set by the user according to the situation.

[0044] Preferably, the specific step S3 also includes:

[0045] S32, the battery voltage growth rate Dzs is obtained by the following formula:

[0046] S33, the output current drop speed Lzs is obtained by the following formula: Among them, Δt represents the time interval of the startup process.

[0047] Preferably, the specific steps of S4 include:

[0048] S41. Based on the deep learning technology, the start-up result recognition model is constructed. The variation coefficient Bhxs and the abnormal coefficient Ycxs are input into the start-up result recognition model. After linear normalization, the judgment index Pdzs is constructed by fitting:

[0049]

[0050] Wherein, α and β are weight values, and C is the second correction constant.

[0051] Preferably, the specific steps of S5 include:

[0052] S51, by comparing and analyzing the determination index Pdzs with the qualified threshold value Q, to determine whether the current emergency starting power supply can successfully start the vehicle engine, the specific content is as follows:

[0053] If the determination index Pdzs exceeds the qualified threshold value Q, it is determined that the current emergency starting power supply has successfully started the vehicle engine. At this time, the emergency starting power supply will immediately stop outputting current and automatically disconnect the circuit connection between the internal battery of the emergency starting power supply and the jumper clip;

[0054] If the judgment index Pdzs does not exceed the qualified threshold value Q, it is determined that the current emergency starting power supply has not successfully started the vehicle engine. At this time, the output of the starting current will continue to try to support the starting of the vehicle engine again and determine whether the start is successful. If multiple tests are still unsuccessful, the system will terminate the output current and alarm.

[0055] The present invention provides a method for detecting an external load of an automobile emergency starting power supply, which has the following beneficial effects:

[0056] (1) In step S1, the method identifies the connection status and load type by detecting the voltage of the jumper. Only when the connection is confirmed to be safe and the load voltage is adapted, the output circuit is allowed to be closed, which effectively avoids the risks caused by improper connection (such as short circuit, reverse connection or overvoltage load) and improves the safety of the system. In step S2, after closing the output circuit, the system monitors the dynamic current and load state changes, extracts relevant transmission data and calculates the abnormal coefficient. Once the abnormal coefficient exceeds the preset abnormal threshold, the system will issue a stop start instruction in time to further avoid excessive loss of the battery or starting power supply, effectively ensuring the safety of equipment and vehicles. Steps S3 and S4 use the variation coefficient and abnormal coefficient to construct a start result recognition model. With the help of deep learning technology, the data is linearly normalized and fitted to obtain the judgment index. By comparing the judgment index Pdzs and the qualified threshold, the system can intelligently determine whether the start is successful, automatically control the power output, avoid excessive output current, and extend the life of the equipment. In short, this method realizes intelligent monitoring and judgment of the starting status through multi-level data detection and intelligent analysis, ensures the safety, reliability and service life of the equipment, and improves the intelligence level of the automobile emergency starting power supply.

[0057] (2) By disconnecting the output circuit between the internal battery and the positive jumper clamp when the emergency starting power supply is turned on, and disabling the low-current and high-current test charging circuits, the system can avoid high-current output before the connection status is confirmed, thereby improving the safety of the equipment and users. By continuously detecting the voltage between the positive and negative poles of the jumper clamp, the system can accurately determine the connection status and load type of the jumper clamp. When within the preset 12V or 24V battery voltage range, the system will light up the corresponding 12V or 24V indicator light, respectively, to intuitively prompt the user of the load type and avoid misoperation caused by voltage mismatch. In addition, when the clamp voltage Ddy falls within the range of 0 to 1V, the system will determine the possible load status, such as unconnected, short-circuited or capacitive load, and make further judgments. This detection process enables the system to pre-confirm the safety and adaptability of the connection before high current output, effectively protecting the emergency starting power supply and vehicle battery and avoiding the risks caused by misoperation.

[0058] (3) When an ambiguous state is detected in the external load connected to the jumper clip, the system first uses a low-current test charging circuit for further identification. If the jumper clip voltage is equal to the battery voltage of the starting power supply, it is judged that the vehicle battery is not connected, ensuring the accuracy of the identification of incorrect connection. When the jumper clip voltage remains in a low range, the system will determine that it may be a short circuit or a capacitive load. At this time, the high-current test charging circuit is triggered, and further judgment is made through continuous voltage monitoring at intervals of 10 milliseconds: if the voltage remains unchanged, it is identified as a short circuit and the buzzer alarm is triggered; if the voltage continues to rise, it is identified as a capacitive load, ensuring accurate judgment of the load type. On this basis, for different abnormal situations, the system will trigger a buzzer alarm respectively, and will not allow the internal battery of the starting power supply to close the high-current output circuit with the positive jumper clip, ensuring that high current will not be output to the vehicle battery when there is an incompatible load, thereby preventing damage to the equipment and the vehicle battery. Buzzer prompts of different frequencies enable users to more clearly understand the current connection status and load type, further improving the intelligence and safety of the equipment. In addition, through the reasonable application of small current and large current test charge detection, the system can effectively identify potential misconnections and unsafe conditions before startup, avoiding equipment damage or safety risks caused by misoperation, and improving the durability of the equipment and the user experience.

[0059] (4) During the starting process, the system performs dynamic current monitoring and load state change detection, and obtains real-time transmission data including the vehicle battery voltage difference before and after starting, the current difference before and after starting, and the jumper voltage and output current during the starting period. These data are used to further analyze the health status of the vehicle battery, and construct the abnormality coefficient through linear normalization processing to evaluate the battery stability during the starting process.

[0060] (5) In specific operations, the battery voltage growth rate reflects whether the generator has started to charge the battery normally, while the output current drop rate indicates whether the emergency starting power supply no longer needs high current support, thereby judging whether the engine has been successfully started. By constructing this variation coefficient, the system can automatically stop the current output after confirming that the start is successful, so as to protect the battery and the emergency starting power supply and avoid excessive consumption caused by continued start. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] Figure 1 The present invention is a flow chart of a method for detecting an external load of an automobile emergency starting power supply. DETAILED DESCRIPTION

[0062] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0063] Example 1, please refer to Figure 1 The present invention provides a method for detecting an external load of an automobile emergency starting power supply, comprising the following steps:

[0064] S1. After the emergency starting power supply is turned on, the output circuit is disconnected and the jumper voltage Ddy is detected to identify the jumper connection status and load type. Based on the jumper connection status and load type, it is determined whether the output circuit is allowed to be closed. After confirming the connection safety and load adaptation, the dynamic current monitoring link is entered to prevent risks caused by improper connection;

[0065] S2. Based on the constraint on the closed output circuit in S1, if the closed output circuit is allowed, the vehicle battery enters the starting phase, and performs real-time dynamic current monitoring and load state change detection to obtain relevant transmission data information, and constructs an abnormal coefficient Ycxs based on the relevant transmission data information. If the abnormal coefficient Ycxs exceeds the preset abnormal threshold K, a stop start instruction is issued;

[0066] S3. Based on the abnormal coefficient Ycxs value, continue to analyze the symbolic content of successful startup to analyze and obtain the variation coefficient Bhxs;

[0067] S4. Use deep learning technology to build a startup result recognition model, input the variation coefficient Bhxs and the abnormal coefficient Ycxs into the startup result recognition model, and after linear normalization, fit and construct the judgment index Pdzs;

[0068] S5. Preset a qualified threshold value Q, and compare and analyze it with the determination index Pdzs to determine whether the current emergency starting power supply can successfully start the vehicle engine.

[0069] In this embodiment, by disconnecting the output circuit and detecting the voltage of the jumper in step S1, the system can accurately identify the connection status and load type of the jumper. This preliminary judgment effectively prevents the risks caused by short circuit, reverse connection or load mismatch, ensuring that the output circuit can be closed only in a safe state, further avoiding damage to the equipment and vehicle. Step S2 introduces dynamic current monitoring and load state change detection, so that the system can obtain the current and load change information during the startup process in real time, and through the calculation of the abnormal coefficient, ensure that the vehicle can issue a stop start command in time under abnormal conditions, thereby avoiding the failure of the vehicle battery to start or excessive battery consumption due to unstable state. Step S4 constructs a startup result recognition model through deep learning, comprehensively considers the variation coefficient and the abnormal coefficient, and constructs a judgment index after linear normalization. This intelligent analysis method can more accurately identify the startup result, avoid misjudgment, and judge whether the startup is successful by comparing with the qualified threshold in step S5. When the judgment index Pdzs exceeds the threshold, the system immediately stops outputting current to protect the service life of the power supply and battery. Through this method, the accuracy and intelligence level of external load detection of the automobile emergency starting power supply are effectively improved, the risk of misoperation is further reduced, and the service life of the equipment is extended, while ensuring the safety and stability of the starting process.

[0070] Example 2, please refer to Figure 1 , specifically: S1 specific steps include:

[0071] S11. When the emergency starting power supply is turned on, disconnect the output circuit between the battery of the emergency starting power supply and the positive electrode jumper, and disable the small current test charging circuit and the large current test charging circuit;

[0072] The output circuit between the jump starter's battery and the positive jumper clip is disconnected: This means that the circuit between the jump starter's internal battery and the positive jumper clip (i.e., the clip used to connect the positive terminal of the car battery) is not connected. In other words, the jump starter will not output current to the positive jumper clip, so no current will flow through the clip to the car's battery. This is to prevent accidental output of current without detection and preparation, causing short circuits or discharge.

[0073] S12. Preliminarily identify and judge the current connection status and load type of the jumper clamp by continuously detecting the jumper clamp voltage Ddy between the positive and negative poles of the jumper clamp; wherein, if the value of the jumper clamp voltage Ddy is within [8V, 16V], it is judged that the jumper clamp is connected to the vehicle's 12V battery, and the 12V load indicator light is turned on to prompt the user; if the value of the jumper clamp voltage Ddy is within [18V, 30V], it is judged that the jumper clamp is connected to the vehicle's 24V battery, and the 24V load indicator light is turned on to prompt the user; if the value of the jumper clamp voltage Ddy is above 30V, it is judged that the jumper clamp is connected to an overvoltage load, and a buzzer is triggered to prompt the user; if the value of the jumper clamp voltage Ddy is within [0V, 8V), it is judged that there are multiple judgment results for the external load connected to the jumper clamp, and the multiple judgment results include no connection, short circuit and capacitive load.

[0074] Disability of the low current test charging circuit: The disabling of the low current test charging circuit means that the circuit is not activated at this time. The function of the low current test charging circuit is to detect the status of the battery by sending a small amount of current to the battery, such as determining whether the battery can accept charging and whether the voltage matches. When the low current test charging circuit is in a disabled state, this detection function does not work, thereby avoiding the transmission of any current to the battery without a safety check.

[0075] Disability of high current test charging circuit: The disabling of high current test charging circuit means that the emergency starting power supply will not immediately output high current to the battery. The high current test charging circuit is usually used to provide the battery with the high current required for starting when the battery is confirmed to be in normal condition. However, before starting, it is necessary to ensure that the battery condition and voltage match, so the circuit is temporarily disabled to prevent accidental output of high current.

[0076] By continuously detecting the voltage between the positive and negative poles of the jumper clip, the system can automatically determine whether it is connected to the vehicle battery, as well as the type of battery or load status connected. This step of detection helps the system prevent the starting power battery and the jumper clip from closing the circuit before confirming that the connection is correct and safe.

[0077] In this embodiment, by continuously detecting the voltage and comparing and analyzing it with the preset voltage range, the system can quickly and accurately determine whether the jumper clip is correctly connected to the appropriate load (such as a 12V or 24V battery), ensuring that the load type matches the output voltage of the emergency starting power supply, thereby avoiding the risk caused by improper connection. Automatic identification and prompting of abnormal status: When an abnormal voltage (such as overvoltage load, short circuit or capacitive load) is detected, the system prompts the user through a buzzer or indicator light, so that the user can promptly identify and handle potential dangerous connections to avoid damage to the equipment or vehicle battery caused by incorrect connection. Ensure the safety of the starting process: Before confirming the connection status and load type of the jumper clip, the system will always disconnect the output circuit between the emergency starting power supply battery and the jumper clip, and the starting power supply is not allowed to output high current. This design can effectively prevent safety accidents caused by misoperation and ensure the safety of the emergency starting power supply, vehicle battery and users. User-friendly prompt function: The system is designed with 12V and 24V load indicator lights and buzzer alarms. Users can clearly understand the current load status through intuitive indicator lights and buzzer prompts, making operation easier and avoiding repeated attempts and equipment loss caused by mismatched loads. In summary, this method realizes automatic connection status identification and load type judgment by continuously monitoring the jumper clamp voltage, which not only improves the intelligence level of the equipment, but also further improves the equipment's safety and user experience, and protects the normal operation of the emergency starting power supply and vehicle battery.

[0078] Example 3, please refer to Figure 1 Specifically: S1 includes the following steps:

[0079] S13. When there are multiple judgment results for the external load connected to the jumper clip, a low current test charging circuit is used to send current to the vehicle battery to detect the voltage state of the jumper clip. The specific contents are as follows:

[0080] S131, if the jump clamp voltage Ddy is equal to the battery voltage of the emergency starting power supply, it is determined that the jump clamp is not connected to the vehicle battery;

[0081] S132. If the value of the jumper voltage Ddy is still within [0V, 8V), it is determined that the jumper connection is short-circuited or capacitive load.

[0082] The specific steps of S1 also include:

[0083] S14. Based on the judgment result in S13, when it is detected that the value of the jumper clamp voltage Ddy is still within [0V, 8V), a high current test charging circuit is used to send current to the vehicle battery, and the voltage state of the jumper clamp is continuously detected at intervals of 10 milliseconds. The specific contents are as follows:

[0084] S141, if the value of the jumper voltage Ddy is still within [0V, 8V), the jumper connection is judged to be short-circuited, and the buzzer is triggered to prompt the user;

[0085] S142, if the jumper voltage Ddy continues to rise, it is determined that the jumper connection is a capacitive load;

[0086] S15. Based on the judgment result of S12 that the jumper clip is connected to an overpressure load and the judgment result of S141, buzzers of different frequencies are triggered respectively to remind the user of the jumper clip connection status and load type of the current vehicle, and the system will not allow the output circuit to be closed, and will not execute the output circuit closing instruction between the battery in the emergency starting power supply and the positive jumper clip, that is, the emergency starting power supply will disable the current output circuit between the internal battery and the positive jumper clip, that is, the high current output will not be connected, which means that even if the device is in the power-on state, no current will be provided to the vehicle battery;

[0087] S16. Based on the judgment results of S131 and S142, the system will not allow the output circuit to be closed, and will not execute the output circuit closing instruction between the battery in the emergency starting power supply and the positive electrode jumper.

[0088] In this embodiment, the method ensures that the emergency starting power supply will not provide high current output to the vehicle battery before the connection is correct and safe by gradually detecting the connection status and load type of the jumper clip, thereby significantly improving the safety of the equipment and users. When the machine is turned on, the voltage state of the jumper clip is judged by a small current test charging circuit. When it is detected that the jumper clip voltage is equal to the starting power supply battery voltage, the system confirms that the jumper clip is not connected to the vehicle battery, effectively avoiding misoperation. When the jumper clip voltage falls within a specific range, a large current test charging circuit is used to further judge its connection status: if the voltage continues to rise, the system judges it as a capacitive load to ensure correct connection; if the voltage remains in a low range, the system judges it as a short circuit and immediately triggers a buzzer alarm, prompting the user to check the connection to avoid safety risks caused by short circuits. Based on the detection results, the system will trigger a buzzer prompt after identifying overvoltage load, short circuit, disconnection, capacitive load, etc., and distinguish them with different frequencies so that the user can clearly understand the current jumper clip connection status and load type. The specific identification and alarm functions for overvoltage loads, short circuits and capacitive loads ensure that the emergency starting power supply will close the high-current output circuit only when the connection is confirmed to be safe and the load is adapted, protecting the vehicle battery and starting power supply, avoiding safety hazards caused by misoperation, and at the same time improving the intelligence and user experience of the equipment.

[0089] Example 4, please refer to Figure 1 , specifically: S2 specific steps include:

[0090] S21. Based on the constraint on the closed output circuit in S1, if the jumper clip is correctly connected to the positive and negative poles of the vehicle battery, no short circuit occurs, and the voltage of the vehicle battery matches the voltage of the emergency starting power supply (for example, a 12V power supply matches a 12V battery), the output circuit will be closed and the vehicle battery will enter the starting phase.

[0091] S22. During the starting process, real-time monitoring of dynamic current and detection of load state changes are performed to obtain relevant transmission data information, wherein the relevant transmission data information includes a voltage difference ΔV in the vehicle battery before and after starting, a difference ΔI in the output current of the emergency starting power supply before and after starting, a jump clamp voltage Ddy measured during a corresponding monitoring period, and an output current value I provided by the emergency starting power supply to the vehicle battery during the corresponding monitoring period;

[0092] S23. Based on the relevant transmission data information, the health status of the vehicle battery is analyzed, and after linear normalization processing, an abnormal coefficient Ycxs is constructed. The abnormal coefficient Ycxs is obtained by the following formula:

[0093]

[0094] In the formula, Dyj represents the equivalent internal resistance, Bdz represents the load fluctuation variance, a1 and a2 are weight values, P represents the first correction constant, and the specific values ​​of a1 and a2 are set by the user according to the situation.

[0095] The specific steps of S2 also include:

[0096] S24. The equivalent internal resistance Dyj is obtained by the following formula:

[0097]

[0098] In the formula, ΔV represents the voltage difference in the vehicle battery before and after starting; ΔI represents the difference in the emergency starting power supply output current before and after starting;

[0099] S25. The load fluctuation variance Bdz is obtained by the following formula:

[0100]

[0101] Where N is the monitoring period, n = 1, 2, 3, ..., N, Ddy n It is represented by the voltage of the jumper clamp measured during the nth monitoring period, that is, the voltage measured on the jumper clamp after connecting the vehicle battery. Expressed as the average bridge voltage, I n It is represented by the output current value provided by the emergency starting power supply to the vehicle battery during the nth monitoring period, and I is represented by the average output current value;

[0102] The above-mentioned current can be monitored and obtained by a current sensor, and the voltage can be monitored and obtained by a voltage sensor;

[0103] S26. By comparing the abnormal coefficient Ycxs with the preset abnormal threshold K, the stability of the vehicle battery during the current startup process is determined:

[0104] If the abnormal coefficient Ycxs exceeds the preset abnormal threshold K, it is judged that the vehicle battery is not in a stable state during the current startup process, and a stop start command will be issued;

[0105] If the abnormal coefficient Ycxs does not exceed the preset abnormal threshold K, it is judged that the vehicle battery is temporarily in a stable state during the current startup process, and no stop start command will be issued to the outside at this time.

[0106] In this embodiment, through step-by-step detection and dynamic monitoring, the system can accurately determine the connection status and load matching of the jumper clip. When it is confirmed that the jumper clip is correctly connected to the vehicle battery and the voltage matches, the output circuit is allowed to be closed to enter the startup phase. During the startup process, by real-time monitoring of current and voltage changes, key transmission data is obtained, including the vehicle battery voltage difference, the emergency starting power supply current difference, and the jumper clip voltage and output current values, so as to more comprehensively evaluate the health of the vehicle battery. By linearly normalizing these data, the system constructs an abnormality coefficient, and uses the equivalent internal resistance and load fluctuation variance calculation formula to derive the state change characteristics of the battery under high current load. The abnormality coefficient can quantify the stability of the vehicle battery, and compare it with the preset abnormality threshold, which helps the system quickly determine the load adaptability of the battery. If it exceeds the threshold, the system immediately issues a stop start command to protect the battery from excessive load; if it is within a safe range, the system allows the starting process to continue. This method not only improves the intelligence level of the emergency starting power supply, but also effectively extends the service life of the vehicle battery and starting power supply. Through dynamic monitoring, it realizes precise control and load management of the starting process, significantly improving the safety and reliability of the equipment.

[0107] Example 5, please refer to Figure 1 , specifically: S3 specific steps include:

[0108] S31. When the stop start command is not received, continue to analyze the signal content of successful start, and calculate the change coefficient Bhxs according to the change of the emergency starting power supply output current and the vehicle battery voltage. The change coefficient Bhxs is obtained by the following formula:

[0109]

[0110] Wherein, Dzs represents the battery voltage increase rate, Lzs represents the output current decrease rate, b1 and b2 are weight values, and the specific values ​​of b1 and b2 are set by the user according to the situation.

[0111] The battery voltage growth rate Dzs refers to the rate at which the vehicle battery voltage rises over time during the startup process. When the engine is successfully started, the vehicle generator starts to work and charges the battery, so the battery voltage will rise quickly. This rate calculates the rate at which the battery voltage rises when the startup is successful, and is used to determine whether it has entered a normal charging state;

[0112] The output current drop rate Lzs refers to the drop rate of the emergency starting power supply output current over time during the starting process. When the vehicle engine is successfully started, the current output demand of the emergency starting power supply will decrease rapidly, because the engine has taken over the operation, the generator starts to charge the battery, and no longer needs the support of the emergency power supply. This rate is the characteristic of the rapid drop of the starting power supply current after successful starting;

[0113] The specific steps of S3 also include:

[0114] S32, the battery voltage growth rate Dzs is obtained by the following formula:

[0115] S33, the output current drop speed Lzs is obtained by the following formula: Among them, Δt represents the time interval of the startup process.

[0116] In this embodiment, during the starting process, when the stop-start command is not received, the emergency starting power supply further evaluates the progress of the starting process by analyzing the changes in the battery voltage and output current; the system calculates the variation coefficient to identify the key features of successful starting, where the variation coefficient is based on the combined weight analysis of the battery voltage growth rate and the output current drop rate. By calculating the battery voltage growth rate, the system can judge in real time the speed at which the generator starts to charge the battery; at the same time, through the output current drop rate, it can be confirmed that the auxiliary effect of the starting power supply on the engine is gradually decreasing. Under the joint action of the battery voltage growth rate and the current drop rate, the variation coefficient provides an accurate judgment of the starting process, helps the system dynamically identify the moment of successful starting, and avoids the loss of power supply and vehicle battery due to excessive current output. When the variation coefficient meets the set standard, the system can judge that the start has been successful, stop the high current output in time, and achieve the purpose of protecting the equipment and battery. This analysis mechanism not only improves the accuracy and intelligence level of the start judgment, but also improves the use efficiency and equipment safety of the emergency starting power supply, and significantly optimizes the user experience.

[0117] Example 6, please refer to Figure 1 , specifically: S4 specific steps include:

[0118] S41. Based on the deep learning technology, the start-up result recognition model is constructed. The variation coefficient Bhxs and the abnormal coefficient Ycxs are input into the start-up result recognition model. After linear normalization, the judgment index Pdzs is constructed by fitting:

[0119]

[0120] In the formula, C is the second correction constant, α and β are weight values, and the weight values ​​can be obtained by referring to the hierarchical analysis method;

[0121] Use deep learning technology to build an initial model, train and test the initial model with relevant transmission data information, use the trained initial model as a state recognition model, obtain feature information in the state recognition model, train and test the state recognition model with the obtained feature information, and use the trained state recognition model as a start result recognition model in combination with the stop start command that has not been received;

[0122] The specific steps of S5 include:

[0123] S51, by comparing and analyzing the determination index Pdzs with the qualified threshold value Q, to determine whether the current emergency starting power supply can successfully start the vehicle engine, the specific content is as follows:

[0124] If the determination index Pdzs exceeds the qualified threshold value Q, it is determined that the current emergency starting power supply has successfully started the vehicle engine. At this time, the emergency starting power supply will immediately stop outputting current to prevent the vehicle from continuing to consume current from the starting power supply after successful starting, and automatically disconnect the circuit connection between the battery inside the emergency starting power supply and the jumper clip to avoid excessive power consumption and protect the service life of the power supply and battery;

[0125] Function: After the vehicle is successfully started, the emergency starting power supply can promptly determine the status and stop output, thereby protecting the safety of the power supply and vehicle battery;

[0126] If the judgment index Pdzs does not exceed the qualified threshold value Q, it is determined that the current emergency starting power supply has not successfully started the vehicle engine. At this time, the output of the starting current will continue to be maintained to try to support the starting of the vehicle engine again. The system will repeatedly detect the starting status of the vehicle in a short period of time, that is, compare the judgment index and threshold again after a period of time, and determine whether the start is successful. If multiple tests are still unsuccessful (or the set maximum number of attempts is reached), the system will stop outputting current and alarm to prevent the battery from over-discharging or the starting power supply from overheating. In addition, the system will prompt the user to check the vehicle battery and connection status to avoid repeated attempts due to poor equipment or battery status, causing unnecessary power consumption or damage.

[0127] In this embodiment, through the start result recognition model based on deep learning technology, the emergency start power supply can intelligently and accurately identify the vehicle engine start result. The system inputs the variation coefficient and the abnormal coefficient into the start result recognition model. After linear normalization and weight adjustment, the judgment index is calculated and compared with the qualified threshold. If it exceeds the threshold, the system determines that the vehicle engine has been successfully started, and then stops the high current output, automatically disconnects the internal battery from the jumper, prevents the device from over-consuming power and prolongs the battery life; if it does not exceed the threshold, the system continues to maintain the current output and detects the vehicle start status multiple times in a short period of time to support the vehicle to try to start again. When multiple detections fail or the set maximum number of attempts is reached, the system will automatically stop outputting current and trigger an alarm to prompt the user to check the vehicle battery and connection to prevent the battery from over-discharging or the device from overheating and damage. This method combines the efficient discrimination function of the deep learning algorithm, realizes intelligent monitoring and control of the start status, ensures that the emergency start power supply can be disconnected in time after the vehicle is successfully started, prevents unnecessary energy loss, and safely shuts down and notifies the user in the case of unsuccessful start, significantly improves the intelligence and safety of the device, and effectively prolongs the service life of the device and the battery.

[0128] It should be noted that the hierarchical analysis method is a combination of qualitative and quantitative analysis methods. It can decompose complex problems into multiple levels. By comparing the importance of factors at each level, it can help decision makers make decisions on complex problems and determine the final decision plan. In this process, the hierarchical analysis method can be used to determine the weight values ​​of these indicators.

[0129] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for detecting external load of an automobile emergency starting power supply, characterized in that: The following steps are included: S1. After the emergency starting power supply is turned on, the output circuit is disconnected and the jumper voltage Ddy is detected to identify the jumper connection status and load type. Based on the jumper connection status and load type, it is determined whether the output circuit is allowed to be closed; S2. Based on the constraint on the closed output circuit in S1, if the closed output circuit is allowed, the vehicle battery enters the starting phase, and performs real-time dynamic current monitoring and load state change detection to obtain relevant transmission data information, and constructs an abnormal coefficient Ycxs based on the relevant transmission data information. If the abnormal coefficient Ycxs exceeds the preset abnormal threshold K, a stop start instruction is issued; S3. Based on the abnormal coefficient Ycxs value, continue to analyze the symbolic content of successful startup to analyze and obtain the variation coefficient Bhxs; S4. Use deep learning technology to build a startup result recognition model, input the variation coefficient Bhxs and the abnormal coefficient Ycxs into the startup result recognition model, and after linear normalization, fit and construct the judgment index Pdzs; S5. Preset a qualified threshold value Q, and compare and analyze it with the determination index Pdzs to determine whether the current emergency starting power supply can successfully start the vehicle engine.

2. The method for detecting external load of an automobile emergency starting power supply according to claim 1, characterized in that: The specific steps of S1 include: S11. When the emergency starting power supply is turned on, disconnect the output circuit between the battery of the emergency starting power supply and the positive electrode jumper, and disable the small current test charging circuit and the large current test charging circuit; S12. Preliminarily identify and judge the current connection status and load type of the jumper clamp by continuously detecting the jumper clamp voltage Ddy between the positive and negative poles of the jumper clamp; wherein, if the value of the jumper clamp voltage Ddy is within [8V, 16V], it is judged that the jumper clamp is connected to the vehicle's 12V battery, and the 12V load indicator light is turned on to prompt the user; if the value of the jumper clamp voltage Ddy is within [18V, 30V], it is judged that the jumper clamp is connected to the vehicle's 24V battery, and the 24V load indicator light is turned on to prompt the user; if the value of the jumper clamp voltage Ddy is above 30V, it is judged that the jumper clamp is connected to an overvoltage load, and a buzzer is triggered to prompt the user; if the value of the jumper clamp voltage Ddy is within [0V, 8B), it is judged that there are multiple judgment results for the external load connected to the jumper clamp, and the multiple judgment results include no connection, short circuit and capacitive load.

3. The method for detecting external load of an automobile emergency starting power supply according to claim 2, characterized in that: The specific steps of S1 also include: S13. When there are multiple judgment results for the external load connected to the jumper clip, a low current test charging circuit is used to send current to the vehicle battery to detect the voltage state of the jumper clip. The specific contents are as follows: S131, if the jump clamp voltage Ddy is equal to the battery voltage of the emergency starting power supply, it is determined that the jump clamp is not connected to the vehicle battery; S132. If the value of the jumper voltage Ddy is still within [0V, 8V), it is determined that the jumper connection is short-circuited or capacitive load.

4. The method for detecting external load of an automobile emergency starting power supply according to claim 3, characterized in that: The specific steps of S1 also include: S14. Based on the judgment result in S13, when it is detected that the value of the jumper clamp voltage Ddy is still within [0V, 8B), a high current test charging circuit is used to send current to the vehicle battery, and the voltage state of the jumper clamp is continuously detected at intervals of 10 milliseconds. The specific contents are as follows: S141, if the value of the jumper voltage Ddy is still within [0V, 8B), the jumper connection is judged to be short-circuited, and the buzzer is triggered to prompt the user; S142, if the jumper voltage Ddy continues to rise, it is determined that the jumper connection is a capacitive load; S15, based on the judgment result of S12 that the jumper clip is connected to an overpressure load and the judgment result of S141, trigger buzzers of different frequencies to remind the user of the jumper clip connection status and load type of the current vehicle, and the system will not allow the output circuit to be closed, and will not execute the output circuit closing instruction between the battery in the emergency starting power supply and the positive jumper clip; S16. Based on the judgment results of S131 and S142, the system will not allow the output circuit to be closed, and will not execute the output circuit closing instruction between the battery in the emergency starting power supply and the positive electrode jumper.

5. The method for detecting external load of an automobile emergency starting power supply according to claim 1, characterized in that: The specific steps of S2 include: S21. Based on the constraint on the closed output circuit in S1, if the jumper clip is correctly connected to the positive and negative poles of the vehicle battery, no short circuit occurs, and the voltage of the vehicle battery matches that of the emergency starting power supply, the output circuit will be closed and the vehicle battery will enter the starting phase. S22. During the starting process, real-time monitoring of dynamic current and detection of load state changes are performed to obtain relevant transmission data information, wherein the relevant transmission data information includes a voltage difference ΔV in the vehicle battery before and after starting, a difference ΔI in the output current of the emergency starting power supply before and after starting, a jump clamp voltage Ddy measured during a corresponding monitoring period, and an output current value I provided by the emergency starting power supply to the vehicle battery during the corresponding monitoring period; S23. Analyze the health status of the vehicle battery based on the relevant transmission data information, and construct an abnormal coefficient Ycxs after linear normalization. The abnormal coefficient Ycxs is obtained by the following formula: In the formula, Dyj represents the equivalent internal resistance, Bdz represents the load fluctuation variance, a1 and a2 are weight values, P represents the first correction constant, and the specific values ​​of a1 and a2 are set by the user according to the situation.

6. The method for detecting external load of an automobile emergency starting power supply according to claim 5, characterized in that: The specific steps of S2 also include: S24. The equivalent internal resistance Dyj is obtained by the following formula: In the formula, ΔV represents the voltage difference in the vehicle battery before and after starting; ΔI represents the difference in the emergency starting power supply output current before and after starting; S25. The load fluctuation variance Bdz is obtained by the following formula: Where N represents the monitoring period, n = 1, 2, 3, ..., N, Ddy n It is expressed as the voltage of the grounding clamp measured during the nth monitoring period. Expressed as the average bridge voltage, I n It is represented by the output current value provided by the emergency starting power supply to the vehicle battery during the nth monitoring period. Expressed as average output current value; S26. By comparing the abnormal coefficient Ycxs with the preset abnormal threshold K, the stability of the vehicle battery during the current startup process is determined: If the abnormal coefficient Ycxs exceeds the preset abnormal threshold K, it is judged that the vehicle battery is not in a stable state during the current startup process, and a stop start command will be issued; If the abnormal coefficient Ycxs does not exceed the preset abnormal threshold K, it is judged that the vehicle battery is temporarily in a stable state during the current startup process, and no stop start command will be issued to the outside at this time.

7. A method for detecting external load of an automobile emergency starting power supply according to claim 6, characterized in that: The specific steps of S3 include: S31. When the stop start command is not received, continue to analyze the signal content of successful start, and calculate and obtain the variation coefficient Bhxs according to the change of the emergency starting power supply output current and the vehicle battery voltage. The variation coefficient Bhxs is obtained by the following formula: Wherein, Dzs represents the battery voltage increase rate, Lzs represents the output current decrease rate, b1 and b2 are weight values, and the specific values ​​of b1 and b2 are set by the user according to the situation.

8. The method for detecting external load of an automobile emergency starting power supply according to claim 7, characterized in that: The specific steps of S3 also include: S32, the battery voltage growth rate Dzs is obtained by the following formula: S33, the output current drop speed Lzs is obtained by the following formula: Among them, Δt represents the time interval of the startup process.

9. The method for detecting external load of an automobile emergency starting power supply according to claim 1, characterized in that: The specific steps of S4 include: S41. Based on the deep learning technology, the start-up result recognition model is constructed. The variation coefficient Bhxs and the abnormal coefficient Ycxs are input into the start-up result recognition model. After linear normalization, the judgment index Pdzs is constructed by fitting: Wherein, α and β are weight values, and C is the second correction constant.

10. The method for detecting external load of an automobile emergency starting power supply according to claim 1, characterized in that: The specific steps of S5 include: S51, by comparing and analyzing the determination index Pdzs with the qualified threshold value Q, to determine whether the current emergency starting power supply can successfully start the vehicle engine, the specific content is as follows: If the determination index Pdzs exceeds the qualified threshold value Q, it is determined that the current emergency starting power supply has successfully started the vehicle engine. At this time, the emergency starting power supply will immediately stop outputting current and automatically disconnect the circuit connection between the internal battery of the emergency starting power supply and the jumper clip; If the judgment index Pdzs does not exceed the qualified threshold value Q, it is determined that the current emergency starting power supply has not successfully started the vehicle engine. At this time, the output of the starting current will continue to try to support the starting of the vehicle engine again and determine whether the start is successful. If multiple tests are still unsuccessful, the system will terminate the output current and alarm.

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