Control method and device for vehicle DCDC converter

Abstract

The invention discloses a control method and device for a vehicle DCDC converter, and relates to the technical field of vehicle control. One specific embodiment of the method comprises the following steps: receiving real-time operation data which is transmitted by a vehicle end according to a current uploading frequency and aims at a DCDC converter; in response to target alarm data existing in the real-time operation data, updating the current uploading frequency according to a preset frequency modulation strategy for the target alarm data, the current uploading frequency and a preset uploading frequency upper limit; generating a frequency modulation instruction for the real-time operation data based on the updated current uploading frequency; and issuing the frequency modulation instruction to the vehicle end to receive real-time operation data for the DCDC converter, wherein the real-time operation data is transmitted by the vehicle end according to the updated current uploading frequency. According to the embodiment, differentiated frequency modulation strategies are set based on different alarm data, and reasonable limitation is carried out in combination with the preset uploading frequency upper limit, so that the flexibility, the stability and the fault early warning capability of vehicle remote frequency modulation are improved.

Description

Technical Field

[0001] This invention relates to the field of vehicle control technology, and in particular to a method and apparatus for controlling vehicle DC-DC converters. Background Technology

[0002] During vehicle operation, the DC-DC converter (DCDC) is one of the core components of the electronic control system of new energy vehicles, and its operating status directly affects the vehicle's energy conversion efficiency and electrical safety. To achieve remote monitoring and fault warning of the DCDC, its real-time operating data (such as voltage, current, temperature, and status) typically needs to be uploaded to the vehicle data platform for analysis and processing. However, the current common practice is to use a fixed-frequency upload mode, which leads to problems such as insufficient data timeliness and delayed anomaly response when dealing with complex and changing DCDC operating conditions, making it difficult to meet the ever-increasing business demands. Summary of the Invention

[0003] In view of this, embodiments of the present invention provide a control method and apparatus for vehicle DC-DC converters, which can at least solve the problem of insufficient data timeliness and delayed abnormal response caused by uploading real-time DC-DC operating data at a fixed frequency in the prior art.

[0004] To achieve the above objectives, according to one aspect of the present invention, a control method for a vehicle DC-DC converter applied to a server is provided, comprising:

[0005] Receive real-time operating data of the DC-DC converter transmitted by the vehicle at the current upload frequency;

[0006] In response to the presence of target alarm data in the real-time operating data, the current upload frequency is updated according to the frequency adjustment strategy preset for the target alarm data, the current upload frequency, and the preset upload frequency upper limit.

[0007] Generate frequency adjustment instructions for the real-time running data based on the updated current upload frequency;

[0008] The frequency modulation command is sent to the vehicle terminal to receive real-time operating data of the DC-DC converter transmitted by the vehicle terminal according to the updated current upload frequency.

[0009] To achieve the above objectives, according to one aspect of the present invention, a control method for a vehicle DC-DC converter applied to a vehicle is provided, comprising:

[0010] Collect real-time operating data of the DC-DC converter;

[0011] The real-time operating data of the DC-DC converter is transmitted to the server according to the current upload frequency.

[0012] Receive the frequency modulation command sent by the server to perform frequency modulation processing and obtain the updated current upload frequency;

[0013] The newly acquired real-time operating data of the DC-DC converter is transmitted to the server according to the updated current upload frequency.

[0014] To achieve the above objectives, according to another aspect of the present invention, a control device for a vehicle DC-DC converter applied at a server is provided, comprising:

[0015] The receiving module is used to receive real-time operating data of the DC-DC converter transmitted by the vehicle at the current upload frequency;

[0016] The frequency modulation module is used to respond to the presence of target alarm data in the real-time operating data, and update the current upload frequency according to the frequency modulation strategy preset for the target alarm data, the current upload frequency, and the preset upload frequency upper limit;

[0017] The instruction module is used to generate frequency modulation instructions for the real-time running data based on the updated current upload frequency;

[0018] The sending module is used to send the frequency modulation command to the vehicle terminal to receive the real-time operating data of the DC-DC converter transmitted by the vehicle terminal according to the updated current upload frequency.

[0019] To achieve the above objectives, according to another aspect of the present invention, a control device for a vehicle DC-DC converter is provided, comprising:

[0020] The acquisition module is used to collect real-time operating data of the DC-DC converter;

[0021] The first upload module is used to transmit the real-time operating data of the DC-DC converter to the server according to the current upload frequency.

[0022] The update module is used to receive the frequency modulation command sent by the server to perform frequency modulation processing and obtain the updated current upload frequency;

[0023] The second upload module is used to transmit the newly collected real-time operating data of the DC-DC converter to the server according to the updated current upload frequency.

[0024] To achieve the above objectives, according to one aspect of the present invention, a server is provided, comprising: a control device for a vehicle DC-DC converter applied to the server.

[0025] To achieve the above objectives, according to another aspect of the present invention, a vehicle is provided, including: a control device for the vehicle's DC-DC converter applied to the vehicle end.

[0026] To achieve the above objectives, according to another aspect of the present invention, a control electronic device for a vehicle DC-DC converter is provided.

[0027] The electronic device of this invention includes: one or more processors; and a storage device for storing one or more programs, which, when executed by the one or more processors, cause the one or more processors to implement any of the above-described control methods for vehicle DC-DC converters.

[0028] To achieve the above objectives, according to another aspect of the present invention, a computer-readable medium is provided having a computer program stored thereon, which, when executed by a processor, implements any of the above-described control methods for vehicle DC-DC converters.

[0029] To achieve the above objectives, according to another aspect of the present invention, a computing program product is provided. One such computing program product includes a computer program that, when executed by a processor, implements the control method for a vehicle DC-DC converter provided in the present invention.

[0030] According to the solution provided by the present invention, one embodiment of the invention has the following advantages or beneficial effects: By using a vehicle data platform, the data upload frequency of the vehicle-side DC-DC converter is dynamically adjusted based on the real-time operating data of the converter, thereby improving the monitoring accuracy and response speed of the vehicle-side DC-DC converter's operating status. Simultaneously, by setting differentiated frequency modulation strategies based on different alarm data and reasonably limiting them in conjunction with a preset upload frequency upper limit, excessive network resource consumption is avoided, while also achieving graded response and intelligent control for abnormal situations. The entire monitoring process requires no active driver intervention and does not affect the normal use of the vehicle, improving the flexibility, stability, and fault warning capabilities of remote frequency modulation for new energy vehicles.

[0031] The further effects of the aforementioned unconventional alternative methods will be explained below in conjunction with specific implementation methods. Attached Figure Description

[0032] The accompanying drawings are provided to better understand the invention and are not intended to unduly limit the scope of the invention. Wherein:

[0033] Figure 1 This is a schematic diagram of the main process of a control method for a vehicle DC-DC converter applied to a server according to an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram illustrating the process interaction for controlling a vehicle DC-DC converter according to an embodiment of the present invention.

[0035] Figure 3 This is a flowchart illustrating an optional control method for a vehicle DC-DC converter applied to a server according to an embodiment of the present invention.

[0036] Figure 4 This is a schematic diagram of the main process of a control method for a vehicle DC-DC converter applied to a vehicle according to an embodiment of the present invention;

[0037] Figure 5 This is a schematic diagram of the main modules of a control device for a vehicle DC-DC converter applied to a server according to an embodiment of the present invention;

[0038] Figure 6 This is a schematic diagram of the main process of a control method for a vehicle DC-DC converter applied to a vehicle according to an embodiment of the present invention;

[0039] Figure 7 This is an exemplary system architecture diagram in which embodiments of the present invention can be applied;

[0040] Figure 8 This is a schematic diagram of the structure of a computer system suitable for implementing the embodiments of the present invention, such as a mobile device or server. Detailed Implementation

[0041] The following description, in conjunction with the accompanying drawings, illustrates exemplary embodiments of the present invention, including various details to aid understanding. These details should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the invention. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0042] It should be noted that in the embodiments of this application, certain software, components, models and other existing solutions in the industry may be mentioned. These should be regarded as exemplary and are only intended to illustrate the feasibility of implementing the technical solution of this application. However, it does not mean that the applicant has used or necessarily used the solution.

[0043] Where there is no conflict, the embodiments and features in the embodiments of this invention can be combined with each other. The acquisition, transmission, storage, use, and processing of data in the technical solutions of this invention comply with the relevant provisions of national laws and regulations, are used for legal and reasonable purposes, and are not shared, disclosed, or sold outside of these legal uses, and are subject to supervision and management by regulatory authorities.

[0044] Regarding user information, necessary measures should be taken to prevent unauthorized access to such personal information data, ensure that personnel authorized to access such data comply with relevant laws and regulations, and safeguard the security of user personal information. Once this user personal information data is no longer needed, risks should be minimized by restricting or even prohibiting data collection and / or deleting the data. Where applicable, including in certain relevant applications, user privacy should be protected through data de-identification, such as by removing specific identifiers (e.g., date of birth), controlling the amount or specificity of stored data (e.g., collecting location data at the city level rather than the specific address level), controlling how data is stored, and / or other de-identification methods.

[0045] In new energy vehicles, DC-DC converters, as key power electronic devices, primarily function to efficiently convert high-voltage DC to low-voltage DC, providing a stable and reliable low-voltage power supply for the vehicle's low-voltage systems (such as lighting, control modules, audio, and instruments). In addition, some DC-DC converters possess bidirectional energy flow capabilities, allowing them to feed energy from the low-voltage side back to the high-voltage side under specific operating conditions, thus achieving energy recovery and voltage balancing. To ensure the stable operation of the vehicle's DC-DC converter, its operating status is typically monitored in real time, involving two important types of alarm data: temperature difference alarm data and abnormal status alarm data.

[0046] For DC-DC temperature difference alarm data, data is primarily collected by temperature sensors located at multiple key positions within the DC-DC converter, such as the temperature values ​​of heat-generating components like power modules, inductors, and heat sinks. The vehicle compares this temperature data with the ambient temperature and analyzes it in conjunction with historical temperature trends. When the temperature at a certain point fluctuates drastically, the local temperature difference is too large, or it approaches a safety threshold, the system determines that there is a potential overheating risk, thus triggering a temperature difference alarm. In particular, when the temperature repeatedly fluctuates near extreme values, it indicates potential problems such as poor heat dissipation, sudden load changes, or component aging; these situations require close monitoring and timely warnings.

[0047] For DCDC status anomaly alarm data, these mainly include abnormal switching status, high-voltage to low-voltage switching failure, inability to close or open, etc. These alarms are typically obtained through real-time monitoring of the DCDC control circuit's status signals, output voltage and current feedback, and the execution of external commands. For example, if the DCDC output does not respond or voltage establishment fails after the control system issues a closing command, it is determined to be a closing anomaly; similarly, if the output voltage persists even when it should be open, it is identified as an opening fault. Furthermore, voltage instability, switching delays, or switching failures during high-voltage to low-voltage switching will also be recorded as high-voltage to low-voltage switching anomalies.

[0048] See Figure 1 The diagram shows the main flowchart of a control method for a vehicle DC-DC converter applied to a server, provided by an embodiment of the present invention, which includes the following steps:

[0049] S101: Receive real-time operating data of the DC-DC converter transmitted by the vehicle end according to the current upload frequency;

[0050] S102: In response to the presence of target alarm data in the real-time operating data, update the current upload frequency according to the frequency adjustment strategy preset for the target alarm data, the current upload frequency, and the preset upload frequency upper limit;

[0051] S103: Generate a frequency modulation command for the real-time running data based on the updated current upload frequency;

[0052] S104: Send the frequency modulation command to the vehicle terminal to receive the real-time operating data of the DC-DC converter transmitted by the vehicle terminal according to the updated current upload frequency.

[0053] In the above implementation, for step S101, the vehicle data platform (i.e., the server) receives real-time operating data of the DC-DC converter transmitted by the vehicle at the current upload frequency. This real-time operating data refers to the real-time operating data of the vehicle's DC-DC converter when it is in high-voltage operation. The "current upload frequency" mentioned here is not fixed to the initial upload frequency, but can dynamically change based on actual conditions (such as the frequency after the previous adjustment). For example, if the vehicle has just started and the DC-DC converter has entered high-voltage operation, data is typically uploaded at a frequency of 30 seconds per packet, then the current upload frequency is 30 seconds per packet. However, based on the frequency adjustment, this current upload frequency is the result of the previous frequency adjustment, such as 15 seconds per packet.

[0054] When the vehicle data platform receives the first real-time DC-DC converter operation data uploaded by the vehicle, it will create a dynamic counter table corresponding to that vehicle based on the vehicle identifier in the real-time operation data. This dynamic counter table is used to record complete statistical information about the operation data related to the vehicle's DC-DC converter.

[0055] The creation strategy for the dynamic counter table can be flexibly configured according to specific business needs: one approach is to create the dynamic counter table only once throughout the entire vehicle lifecycle, which is suitable for situations requiring cumulative analysis of long-term operating status; another approach is to create a new dynamic counter table each time the vehicle starts and the DC-DC converter enters high-voltage operating status, thereby achieving independent data statistics for each start-up cycle. Regardless of the approach, the platform can obtain information indicating that the DC-DC converter has entered high-voltage operating status from real-time operating data.

[0056] The information recorded in the dynamic counter table includes, but is not limited to, temperature difference alarm data and abnormal status alarm data of the DC-DC converter. All counter entries are initially empty. Whenever a new real-time operating data of the DC-DC converter is uploaded to the vehicle data platform, the vehicle data platform will update and accumulate the corresponding fields in the dynamic counter table according to the content of the data, thereby realizing continuous tracking and statistical analysis of the vehicle's DC-DC operating status.

[0057] For steps S102 to S104, after receiving the real-time operating data of the DC-DC converter uploaded by the vehicle, if the vehicle data platform detects that the real-time operating data of the DC-DC converter contains target DC-DC alarm data (such as temperature difference alarm data or abnormal status alarm data), it will immediately trigger the frequency modulation mechanism to dynamically adjust the current upload frequency of the vehicle.

[0058] Although this solution sets different frequency modulation strategies for DCDC temperature difference alarm data and DCDC status abnormality alarm data, the overall processing logic for both is basically the same, with differences only in specific parameter configurations. See [link to relevant documentation] Figure 2 The diagram shows the specific processing flow, with the vehicle terminal set as M and the vehicle data platform set as N. The following is a detailed description of the implementation process:

[0059] S201. When the vehicle terminal detects that the vehicle's DC-DC converter has entered a high-voltage operating state, it adds the information indicating that the DC-DC converter has entered a high-voltage operating state to the collected real-time operating data. Then, according to the current upload frequency (i.e., upload frequency 1, which is usually the preset initial upload frequency at startup, such as every 30 seconds / packet), it uploads the real-time operating data of the DC-DC converter to the vehicle data platform.

[0060] S202. After receiving the real-time operating data of the DC-DC converter transmitted from the vehicle at upload frequency 1, the vehicle data platform will check whether it contains target alarm data. Once target alarm data is detected, a risk tag will be immediately applied to the vehicle (e.g., a vehicle identification tag), marking the vehicle into alarm monitoring mode, and matching the frequency modulation strategy corresponding to the target alarm data. Frequency modulation and tagging can be performed simultaneously, or frequency modulation can be performed first and then tagging, or tagging can be performed first and then frequency modulation; there are no restrictions here. The frequency modulation strategy can be a multiplier, such as 2x or 4x, thereby increasing the current upload frequency 1 to a higher upload frequency 2. Assuming upload frequency 1 is 30 seconds / packet, after increasing the speed by 2x, the upload frequency 2 becomes 15 seconds / packet.

[0061] S203. The vehicle data platform compares the upload frequency 2 with the preset upload frequency limit (e.g., 1 second / packet), takes the smaller value as the final upload frequency 3, and generates a frequency adjustment command based on the upload frequency 3 and sends it to the vehicle for frequency adjustment processing to achieve an instant increase in the upload frequency.

[0062] S204. After receiving the frequency modulation command, the vehicle terminal will use the upload frequency 3 as the current upload frequency, and then transmit the newly collected DC-DC converter real-time operation data to the vehicle data platform according to the updated current upload frequency.

[0063] S205. The vehicle data platform continues to receive and analyze the real-time operating data of these DC-DC converters, first determining whether the vehicle is still tagged with a risk label.

[0064] S206. If the vehicle is still labeled with a risk tag, further confirm whether there is target alarm data in the newly received real-time operating data of the DC-DC converter.

[0065] S207: If the vehicle data platform does not detect the target alarm data in the newly received real-time operating data of the DC-DC converter, it considers the anomaly to be resolved. The vehicle data platform cancels the alarm monitoring mark of the vehicle, that is, cancels the tagged risk label, and increments "the number of short-term alarm monitoring times for the vehicle" by one, thus ending the frequency tuning process.

[0066] S208. If the target alarm data is detected again in the newly received real-time operating data of the DC-DC converter, it means that the abnormality has not been eliminated. At this time, the vehicle data platform will calculate the upload frequency 4 based on the upload frequency 3 and the frequency modulation strategy, and compare it with the preset upload frequency upper limit again. The smaller value will be taken as the upload frequency 5, and a new frequency modulation command will be generated and sent to the vehicle end to further improve the upload frequency of the vehicle end.

[0067] As an optimized implementation of steps S207 and S208, the frequency modulation strategy also includes a preset time window, such as 5 minutes. The preset time window can be different or the same for different target alarm data, and there is no restriction here. Therefore, this step is to detect whether the target alarm data exists in the newly received real-time operating data of the DC-DC converter within the preset time window. If it does not exist, the risk tag marked on the vehicle end is cleared; if it exists, the frequency modulation process continues.

[0068] S209. After receiving the frequency modulation command, the vehicle end will use the upload frequency 5 as the current upload frequency, and then upload the real-time operation data of the DC-DC converter to the vehicle data platform according to the updated current upload frequency, and then re-enter step S205.

[0069] S210. If it is determined that the vehicle has not been labeled with a risk tag and the latest uploaded real-time operating data of the DC-DC converter does not contain the target alarm data, then no frequency adjustment operation is performed on the vehicle side, and the next loop is entered, proceeding to step S202; however, if the target alarm data is detected at this time, the frequency adjustment process is triggered again.

[0070] S211. The entire frequency adjustment process continues to loop until the updated current upload frequency reaches the preset upload frequency limit. Once the preset upload frequency limit is reached, the vehicle data platform will generate a frequency adjustment command based on this preset upload frequency limit and send it to the vehicle (step S212). This ensures that the upload frequency will not continue to increase. That is, if the current upload frequency is the preset upload frequency, the frequency adjustment process will not be executed again. This ensures abnormal response capability while avoiding excessive network load or resource waste due to excessively frequent uploads.

[0071] The frequency adjustment strategy also includes a preset alarm count. When the preset upload frequency limit is reached, since the data upload frequency has reached the maximum data upload level in alarm monitoring mode, it is necessary to determine the preset alarm count corresponding to the target alarm data, such as 10 alarms. The preset alarm count for different target alarm data can be different or the same; there is no restriction here.

[0072] S213. If the number of target DC-DC alarm data in the real-time operation data of the DC-DC converter received within the preset time window exceeds 10, the rescue system will be activated to contact the vehicle owner to remind them of the alarm, such as suggesting that the vehicle be sent to a 4S store for inspection, i.e., step S214.

[0073] Through the above mechanism, the vehicle data platform can intelligently control the frequency of DCDC operation status uploads. This not only effectively responds to sudden alarm data but also flexibly adjusts the data upload rhythm according to the actual situation. At the same time, it avoids resource waste and network congestion caused by blindly increasing the upload frequency. This improves the remote monitoring efficiency and fault early warning capabilities of the vehicle data platform, providing strong support for the safe and stable operation of new energy vehicles.

[0074] For the two key alarm data types during the operation of the DC-DC high-voltage system—"DC-DC temperature difference alarm data" and "DC-DC abnormal status alarm data"—the vehicle data platform has set different frequency modulation strategies. The overall process is described in detail below using two specific examples:

[0075] In Example 1, when the vehicle data platform receives real-time operating data of the DC-DC converter uploaded by the vehicle, if it only detects DC-DC temperature difference alarm data and does not detect DC-DC status abnormality alarm data, the platform will mark the vehicle into "alarm monitoring mode," i.e., label it with a risk tag. At this time, the platform will increase the upload frequency to 15 seconds / packet based on the current upload frequency (e.g., 30 seconds / packet) by a first frequency modulation multiple (e.g., 2 times), and send a frequency modulation command to the vehicle for frequency modulation processing.

[0076] The vehicle continues to upload real-time operating data of the DC-DC converter at a rate of 15 seconds per packet. If the platform detects temperature difference alarm data again in the newly received real-time operating data of the DC-DC converter but does not detect abnormal DC-DC status alarm data, it will continue to double the upload frequency to 7.5 seconds per packet, thereby continuously increasing the upload frequency to achieve high-frequency monitoring of abnormal DC-DC temperature data.

[0077] The platform sets a preset 5-minute time window for DCDC temperature difference alarm data to assess whether the anomaly has been resolved. If no new temperature difference alarm data is received within this time window, the risk label on the vehicle is removed, and the vehicle's "short-term alarm monitoring count" is incremented. Conversely, if new temperature alarm data is detected within the time window, the frequency is increased.

[0078] Throughout the process, the platform continuously checks whether the current upload frequency has reached a preset upper limit (e.g., 1 packet per second). Once the upper limit is reached, the upload frequency is maintained and no further increase is made. If the platform receives more than 10 alarm data within a preset time window while in high-frequency upload mode, it determines that there is a serious fault risk, automatically triggers the rescue system, and contacts the vehicle owner to suggest sending the vehicle to a 4S shop for further inspection.

[0079] In Example 2, if the platform detects abnormal DCDC status alarm data in the real-time operating data of the DCDC converter, a higher-level response mechanism will be immediately activated regardless of whether temperature difference alarm data exists. Since abnormal DCDC status alarm data usually involves problems that directly affect the operation of the vehicle's electronic control system, such as high-voltage / low-voltage switching failure, inability to close or open, etc., its priority is higher than temperature alarms. Therefore, the platform will immediately mark the vehicle into "alarm monitoring mode," i.e., label it with a risk tag.

[0080] At this point, the platform will increase the upload frequency by a higher modulation factor (i.e., the second modulation factor, such as 4 times), adjusting the original upload frequency of 30 seconds / packet to 7.5 seconds / packet, and send a modulation command to the vehicle end for frequency modulation processing. The vehicle end continues to upload real-time operating data of the DC-DC converter at 7.5 seconds / packet. If the platform detects abnormal status alarm data again in the newly received real-time operating data of the DC-DC converter, it will continue to increase the upload frequency step by step based on the current upload frequency at the same multiple (such as increasing it to 1.875 seconds / packet, etc.) until the preset upload frequency limit is reached.

[0081] Similarly, if no further DCDC status anomaly alarm data is detected within a 5-minute time window, the platform will remove the risk label from the vehicle and update the "short-term alarm monitoring count by 1". If DCDC status anomaly alarm data still exists, the frequency adjustment logic will continue to be executed. Once the upload frequency reaches the upper limit and the platform has received more than 10 status anomaly alarm data, it is considered that the vehicle has a major safety hazard, and the system will trigger the rescue system to proactively contact the owner and suggest going to a 4S store for professional inspection.

[0082] Through the two implementation methods described above, the platform can adopt differentiated frequency modulation strategies based on different target alarm data, which not only ensures flexible response to minor anomalies but also ensures rapid identification and intervention for serious faults, thereby effectively improving the remote monitoring capabilities and safety early warning level of DC-DC converters in new energy vehicles.

[0083] The method provided in the above embodiments enables the vehicle data platform to quickly adjust the data upload frequency of the vehicle when abnormal alarm data is detected in the real-time DCDC operation data uploaded by the vehicle, thereby improving the monitoring accuracy and response speed of the vehicle's DCDC operation status. Simultaneously, by setting differentiated frequency adjustment strategies based on different alarm data and reasonably limiting them in conjunction with a preset upload frequency upper limit, excessive network resource consumption is avoided, and graded response and intelligent control of abnormal situations are achieved, enhancing the flexibility, stability, and fault early warning capabilities of the new energy vehicle remote monitoring system.

[0084] See Figure 3The diagram illustrates an optional control method for a vehicle DC-DC converter applied to a server according to an embodiment of the present invention, comprising the following steps:

[0085] S301: Count the number of current short-term alarm monitoring times for the DC-DC converter within a specific operating cycle;

[0086] S302: Based on the statistical count of the current short-term alarm monitoring, analyze whether the DC-DC converter is abnormal;

[0087] S303: If the DC-DC converter is found to be malfunctioning, generate an abnormality prompt message for the DC-DC converter and send the abnormality prompt message to the vehicle terminal so that the vehicle terminal can display the abnormality prompt message to the occupants.

[0088] For step S301, the step of counting the number of current short-term alarm monitoring for the DC-DC converter within a specific operating cycle includes: in response to the real-time operating data packet containing information indicating that the DC-DC converter has exited the high-voltage operating state, counting the number of current short-term alarm monitoring for the vehicle end within the current high-voltage operating cycle.

[0089] In this solution, the high-voltage operating state of a vehicle typically includes scenarios such as driving, charging, and high-power motor operation. In these states, the DC-DC converter operates under high load, and its real-time operating data has high monitoring value. The low-voltage operating state mainly refers to scenarios where the vehicle only maintains basic functions such as display screen illumination and map search, requiring low power consumption. When the vehicle exits the high-voltage operating state (i.e., logs out of the vehicle data platform), the vehicle adds the information instructing the DC-DC converter to exit the high-voltage operating state to the DC-DC real-time operating data. The vehicle data platform will then statistically record the number of "short-term alarm monitoring times" during this high-voltage operating cycle.

[0090] For step S302, based on the statistically obtained current short-term alarm monitoring count, analyze whether the DC-DC converter is abnormal, including: obtaining the historical short-term alarm monitoring count of the vehicle end within the historical high-voltage operation cycle; determining the change in the current short-term alarm monitoring count based on the historical short-term alarm monitoring count and the current short-term alarm monitoring count; and determining that the DC-DC converter is abnormal in response to the indication that the current short-term alarm monitoring count is increasing.

[0091] During their lifecycle (i.e., the entire usage period from manufacturing to scrapping), vehicles undergo multiple high-voltage operation cycles, including driving cycles and charging cycles. Each high-voltage start corresponds to a platform login, and the vehicle logs off the platform after completing high-voltage operation, forming a complete high-voltage operation cycle. For each vehicle, the platform can obtain the "historical short-term alarm monitoring count" within its historical high-voltage operation cycles based on its historical login and logout records, and combine this with the current short-term alarm monitoring count in the current high-voltage operation cycle to analyze the changing trend of the vehicle's abnormal DC-DC behavior in different high-voltage operation cycles.

[0092] To improve the accuracy of judgments, the platform strives to maintain consistency in operating conditions across different cycles during the analysis process and considers the impact of external factors such as seasonal changes and usage intensity on alarm frequency. It assesses changes in the "number of short-term alarm monitoring sessions" using year-on-year or month-on-month comparisons. If a continuous upward trend is observed, it indicates a potential anomaly in the DC-DC converter, such as the risk of aging, damage, or performance degradation.

[0093] In step S303, once the platform determines a potential DC-DC fault risk, it will send DC-DC anomaly information to the vehicle. After the vehicle's DC-DC system restarts at high voltage and re-logs into the data platform, the vehicle will proactively display a DC-DC anomaly warning message, such as "DC-DC aging warning," in a preset location on the vehicle (e.g., dashboard interface, in-vehicle screen interface), reminding occupants that the DC-DC system may be malfunctioning and advising them to remain vigilant while driving and, if necessary, visit a 4S dealership for professional inspection and maintenance. This mechanism enables long-term tracking and early warning of the DC-DC system's health status, helping to improve the reliability and safety of the entire vehicle system while enhancing user trust in the electronic control system of new energy vehicles.

[0094] The method provided in the above embodiments, by statistically analyzing and trending the number of short-term alarm monitoring times at the vehicle end during each high-voltage operation cycle, can effectively identify the aging or performance degradation trend of DCDC abnormal states, achieving closed-loop management from short-term abnormal response to long-term health status assessment. Furthermore, when an upward trend in the number of short-term alarm monitoring times is detected, DCDC abnormality alerts are promptly pushed to the vehicle end, allowing the alert to be displayed at a preset location when the vehicle re-enters high-voltage operation. This provides the driver with more accurate and reliable abnormality warnings, enhancing the initiative and targeting of the warnings, helping the driver to detect and handle DCDC-related problems in advance, and ensuring the stable operation of the vehicle's electronic control system.

[0095] See Figure 4 The diagram shows the main flowchart of a control method for a vehicle DC-DC converter provided by an embodiment of the present invention, which includes the following steps:

[0096] S401: Acquires real-time operating data of the DC-DC converter;

[0097] S402: Transmit the real-time operating data of the DC-DC converter to the server according to the current upload frequency;

[0098] S403: Receive the frequency modulation command sent by the server to perform frequency modulation processing and obtain the updated current upload frequency;

[0099] S404: Transmit the newly acquired real-time operating data of the DC-DC converter to the server according to the updated current upload frequency.

[0100] When the vehicle detects that the DC-DC converter has entered high-voltage operation mode, it adds the information indicating that the DC-DC converter has entered high-voltage operation mode to the real-time operation data; when it detects that the DC-DC converter has exited high-voltage operation mode, it adds the information indicating that the DC-DC converter has exited high-voltage operation mode to the real-time operation data. Based on the above information, the vehicle-to-everything (V2X) data platform performs operations to create a dynamic counter table or count the number of current short-term alarm monitoring times of the vehicle during the current high-voltage operation cycle.

[0101] The vehicle-side configuration only sets one field: the current upload frequency. Therefore, this current upload frequency is a dynamically changing value. For example, when the vehicle is first started, the current upload frequency is the preset initial upload frequency; after frequency adjustment, it becomes the updated upload frequency. The maximum current upload frequency is the upper limit preset by the vehicle data platform. The entire frequency adjustment process is executed on the vehicle data platform to adapt to data monitoring needs under different operating conditions.

[0102] However, if the data platform detects an anomaly in the vehicle's DC-DC converter, the vehicle will receive a DC-DC anomaly warning message from the vehicle data platform. After the vehicle's DC-DC converter restarts at high voltage and logs back into the data platform, the DC-DC anomaly warning message, such as "DC-DC aging warning," will be actively displayed in a preset location on the vehicle (such as the dashboard interface or the in-vehicle screen interface). This will remind occupants that there may be an anomaly in the DC-DC converter and suggest that they remain vigilant while driving and, if necessary, go to a 4S store for professional inspection and maintenance.

[0103] See Figure 5 This diagram illustrates the main modules of a control device 500 for a vehicle DC-DC converter applied to a server, provided by an embodiment of the present invention, including:

[0104] Receiver module 501 is used to receive real-time operating data of the DC-DC converter transmitted by the vehicle end according to the current upload frequency;

[0105] The frequency modulation module 502 is used to respond to the presence of target alarm data in the real-time operating data, and update the current upload frequency according to the frequency modulation strategy preset for the target alarm data, the current upload frequency, and the preset upload frequency upper limit;

[0106] Instruction module 503 is used to generate frequency modulation instructions for the real-time running data based on the updated current upload frequency;

[0107] The sending module 504 is used to send the frequency modulation command to the vehicle terminal to receive the real-time operating data of the DC-DC converter transmitted by the vehicle terminal according to the updated current upload frequency.

[0108] In the implementation device of the present invention, the real-time operating data is the real-time operating data of the vehicle-side DC-DC converter when it is in a high-voltage operating state.

[0109] The apparatus of the present invention further includes a table creation module, used to: in response to the real-time operation data packet containing information indicating that the DC-DC converter has entered a high-voltage operation state, create a dynamic counting table for the vehicle end, so as to use the dynamic counting table to store the real-time operation data.

[0110] In the apparatus of this invention, the frequency modulation module 502 is used for:

[0111] Based on the frequency modulation strategy preset for the target alarm data and the current upload frequency, a candidate upload frequency is determined;

[0112] The smaller value between the candidate upload frequencies and the preset upload frequency limit is selected as the updated current upload frequency.

[0113] The device for implementing the present invention further includes a tag module, used for:

[0114] Check whether the vehicle currently has a risk label applied.

[0115] If the target alarm data exists in the real-time operation data, and the vehicle is not currently labeled with a risk tag, then a risk tag is applied to the vehicle.

[0116] If the target alarm data is not present in the real-time operating data when the risk label is currently applied to the vehicle, the risk label applied to the vehicle is cleared and the frequency tuning process ends.

[0117] In the device of this invention, the frequency modulation strategy includes a preset time window, and the tag module is used to: if the target alarm data is not present in the real-time operation data received within the preset time window, then clear the risk tag marked on the vehicle.

[0118] In the apparatus of this invention, the frequency modulation strategy further includes a preset number of alarms. When the current upload frequency is the preset upper limit of the upload frequency, the apparatus further includes an alarm reminder module, used for:

[0119] The number of target alarm data in the real-time operation data received within the preset time window is counted. In response to the number reaching the preset alarm number, the contact person corresponding to the vehicle is identified to provide an alarm reminder.

[0120] In the device of this invention, when the current upload frequency is the preset upper limit of the upload frequency, no frequency adjustment operation is performed.

[0121] In the device of the present invention, after the risk label marked on the vehicle is removed, the device further includes: incrementing the count of short-term alarm monitoring for the vehicle by one.

[0122] The device for implementing this invention also includes an anomaly control module, used for:

[0123] The number of current short-term alarm monitoring times for the DC-DC converter within a specific operating cycle is counted.

[0124] Based on the statistical count of the current short-term alarm monitoring, analyze whether the DC-DC converter is abnormal;

[0125] If the DC-DC converter is found to be malfunctioning, an abnormality prompt message is generated for the DC-DC converter and sent to the vehicle terminal so that the vehicle terminal can display the abnormality prompt message to the occupants.

[0126] In the device of this invention, the anomaly control module is used to: respond to the real-time operation data packet containing information indicating that the DC-DC converter has exited the high-voltage operation state, and count the number of current short-term alarm monitoring times at the vehicle end during the current high-voltage operation cycle.

[0127] In the apparatus of this invention, the anomaly control module is used for:

[0128] The number of historical short-term alarm monitoring times at the vehicle end during the historical high-voltage operation cycle is obtained, and the change in the current number of short-term alarm monitoring times is determined based on the historical number of short-term alarm monitoring times and the current number of short-term alarm monitoring times.

[0129] In response to the change in the current short-term alarm monitoring count indicating an upward trend, it is determined that the DC-DC converter is malfunctioning.

[0130] In the device of the present invention, when the target alarm data only includes temperature difference alarm data, the frequency modulation strategy is a first frequency modulation multiple;

[0131] When the target alarm data includes abnormal status alarm data, the frequency modulation strategy is a second frequency modulation multiple; wherein, the first frequency modulation multiple is less than the second frequency modulation multiple.

[0132] See Figure 6 The diagram shows a schematic of the main modules of a control device 600 for a vehicle DC-DC converter provided in an embodiment of the present invention, including:

[0133] Acquisition module 601 is used to acquire real-time operating data of the DC-DC converter;

[0134] The first upload module 602 is used to transmit the real-time operating data of the DC-DC converter to the server according to the current upload frequency.

[0135] The update module 603 is used to receive the frequency modulation command sent by the server to perform frequency modulation processing and obtain the updated current upload frequency;

[0136] The second upload module 604 is used to transmit the newly collected real-time operating data of the DC-DC converter to the server according to the updated current upload frequency.

[0137] The apparatus of the present invention further includes an indication information module, used for:

[0138] In response to the monitoring that the DC-DC converter has entered a high-voltage operating state, information indicating that the DC-DC converter has entered a high-voltage operating state is added to the real-time operating data;

[0139] In response to monitoring that the DC-DC converter has exited the high-voltage operation state, information indicating that the DC-DC converter has exited the high-voltage operation state is added to the real-time operation data.

[0140] The device for implementing the present invention further includes an anomaly alert module, used for:

[0141] Receive the DC-DC converter error message transmitted by the server;

[0142] In response to the monitoring that the DC-DC converter has re-entered the high-voltage operation state, an abnormal prompt message for the DC-DC converter is displayed at a preset location.

[0143] Furthermore, the specific implementation details of the device described in the embodiments of the present invention have been described in detail in the above-described method, so the details will not be repeated here.

[0144] Figure 7An exemplary system architecture 700 to which embodiments of the present invention can be applied is shown. As shown in the figure, the architecture includes two main parts: a vehicle terminal 71 and a vehicle data platform 72.

[0145] The vehicle-side component 71 mainly includes a communication module 711, a control module 712, a sensor system 713, a power supply 714, a DC-DC module 715, and an instrument panel 716 or an in-vehicle screen 717. The communication module 711 is responsible for data interaction with the vehicle data platform 72. The control module 712 coordinates the operation of each subsystem and processes data from the sensor system 713.

[0146] The sensor system 713 includes various sensors for acquiring DC-DC operating parameters (such as temperature, voltage, current, etc.). When detecting temperature, it is also necessary to combine the data with an external ambient temperature sensor to obtain more comprehensive data. Therefore, the sensor can be placed at an appropriate location outside the vehicle. The power supply 714 provides electrical support for the entire vehicle and can be a rechargeable lithium-ion or lead-acid battery.

[0147] As a key electronic control component in new energy vehicles, the DC-DC module 715 collects its operating status data through the sensor system 713 and transmits it to the control module 712 for processing. Then, the control module 712 transmits the processed DC-DC real-time operating data to the communication module 711, so that the DC-DC real-time operating data can be uploaded to the platform through the communication module 711.

[0148] The instrument panel 716 or the in-vehicle screen 717 is used to display DC-DC alarm information under specific circumstances, such as DC-DC abnormality warnings. In addition, the vehicle-side 71 can be configured with other hardware systems according to actual needs, such as accelerator, steering wheel system, seat belts, airbags, peripheral devices (projection equipment, auxiliary displays, etc.), and achieve internal interconnection through wired or wireless means.

[0149] The vehicle data platform 72 includes a computer system 721, a memory 722, and a communication module 723. It establishes a connection with the communication module 711 of the vehicle terminal 71 through the communication module 723, and receives and analyzes the real-time operation data of DC-DC transmitted by the communication module 711.

[0150] The memory 722 is divided into two functional blocks: a frequency modulation strategy block 7221 and a historical high-voltage operation cycle data block 7222. The frequency modulation strategy block 7221 stores differentiated frequency modulation strategies set for different types of alarm data (such as temperature difference alarms and abnormal status alarms); the historical high-voltage operation cycle data block 7222 records a dynamic count table of different vehicle identifiers in each high-voltage operation cycle, including key indicators such as the number of short-term alarm monitoring times.

[0151] The computer system 721 controls some or all of the functions implementing control over the vehicle's DC-DC converter. The computer system 721 may include at least one processor that executes instructions stored in a non-transitory computer-readable medium, such as memory. The computer system 721 provides executable code that implements control over the vehicle's DC-DC converter.

[0152] The processor can be any conventional processor, such as a commercially available Central Processing Unit (CPU). Alternatively, the processor can be a dedicated device such as an Application Specific Integrated Circuit (ASIC) or other hardware-based processor. Those skilled in the art will understand that the processor, computer, or memory can actually include multiple processors, computers, or memories that may or may not be stored in the same physical enclosure. For example, memory can be a hard disk drive or other storage media located in an enclosure different from that of a computer. Therefore, references to processors or computers will be understood to include references to a collection of processors or computers or memories that may or may not operate in parallel. Unlike using a single processor to perform the steps described herein, some components, such as steering and deceleration components, may each have their own processor that performs only determinations related to the component's specific function.

[0153] It should be understood that the components described above are merely an example. In actual applications, components in the various modules or systems mentioned above may be added or removed as needed. Figure 7 This should not be construed as a limitation on the embodiments of this application. The system architecture provided by this solution realizes a complete closed loop from vehicle-side data acquisition, uploading to platform-side data analysis, and feedback control. It supports functions such as high-frequency monitoring, intelligent frequency adjustment, trend prediction, and anomaly warning for DCDC operation status, and has good flexibility, scalability, and practicality. It can effectively improve the intelligence level and security capabilities of the remote monitoring system for new energy vehicles.

[0154] The following is for reference. Figure 8 It shows a schematic diagram of the structure of a computer system 800 suitable for implementing a terminal device of the present invention. Figure 8 The terminal device shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of the present invention.

[0155] like Figure 8As shown, the computer system 800 includes a central processing unit (CPU) 801, which can perform various appropriate actions and processes based on programs stored in read-only memory (ROM) 802 or programs loaded from storage section 808 into random access memory (RAM) 803. The RAM 803 also stores various programs and data required for the operation of the system 800. The CPU 801, ROM 802, and RAM 803 are interconnected via a bus 804. An input / output (I / O) interface 805 is also connected to the bus 804.

[0156] The following components are connected to I / O interface 805: an input section 806 including a keyboard, mouse, etc.; an output section 807 including a cathode ray tube (CRT), liquid crystal display (LCD), etc., and speakers, etc.; a storage section 808 including a hard disk, etc.; and a communication section 809 including a network interface card such as a LAN card, modem, etc. The communication section 809 performs communication processing via a network such as the Internet. A drive 810 is also connected to I / O interface 805 as needed. A removable medium 811, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., is installed on drive 810 as needed so that computer programs read from it can be installed into storage section 808 as needed.

[0157] In particular, according to the embodiments disclosed in this invention, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments disclosed in this invention include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via communication section 809, and / or installed from removable medium 811. When the computer program is executed by central processing unit (CPU) 801, it performs the functions defined above in the system of this invention.

[0158] It should be noted that the computer-readable medium shown in this invention can be a computer-readable signal medium or a computer-readable storage medium, or any combination thereof. A computer-readable storage medium can be, for example,—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this invention, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In this invention, a computer-readable signal medium can include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media can also be any computer-readable medium other than computer-readable storage media, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to: wireless, wire, optical fiber, RF, etc., or any suitable combination thereof.

[0159] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of the present invention. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram or flowchart, and combinations of blocks in a block diagram or flowchart, may be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0160] The modules described in the embodiments of the present invention can be implemented in software or hardware. The described modules can also be located in a processor; for example, a processor can be described as including a receiving module, a frequency modulation module, an instruction module, and a sending module. The names of these modules do not necessarily limit the module itself; for example, the instruction module can also be described as a "frequency modulation instruction module."

[0161] In another aspect, the present invention also provides a computer-readable medium, which may be included in the device described in the above embodiments; or it may exist independently and not assembled into the device. The computer-readable medium carries one or more programs that, when executed by the device, cause the device to perform any of the above-described control methods for a vehicle DC-DC converter.

[0162] The computer program product of the present invention includes a computer program that, when executed by a processor, implements the control method for vehicle DC-DC converters in the embodiments of the present invention.

[0163] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can occur depending on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A control method for a vehicle DC-DC converter, characterized in that, Applied to the server side, the method includes: Receive real-time operating data of the DC-DC converter transmitted by the vehicle at the current upload frequency; In response to the presence of target alarm data in the real-time operating data, the current upload frequency is updated according to the frequency adjustment strategy preset for the target alarm data, the current upload frequency, and the preset upload frequency upper limit. Generate frequency adjustment instructions for the real-time running data based on the updated current upload frequency; The frequency modulation command is sent to the vehicle terminal to receive real-time operating data of the DC-DC converter transmitted by the vehicle terminal according to the updated current upload frequency.

2. The method according to claim 1, characterized in that, The real-time operating data refers to the real-time operating data of the vehicle-side DC-DC converter when it is in a high-voltage operating state.

3. The method according to claim 2, characterized in that, The method further includes: In response to the real-time operation data packet containing information indicating that the DC-DC converter has entered a high-voltage operation state, a dynamic counter table is created for the vehicle end to store the real-time operation data.

4. The operational data management and control method according to claim 1, characterized in that, The step of updating the current upload frequency based on the preset frequency adjustment strategy for the target alarm data, the current upload frequency, and the preset upload frequency upper limit includes: Based on the frequency modulation strategy preset for the target alarm data and the current upload frequency, a candidate upload frequency is determined; The smaller value between the candidate upload frequencies and the preset upload frequency limit is selected as the updated current upload frequency.

5. The method according to claim 1, characterized in that, The method further includes: Check whether the vehicle currently has a risk label applied. If the target alarm data exists in the real-time operation data, and the vehicle is not currently labeled with a risk tag, then a risk tag is applied to the vehicle. If the target alarm data is not present in the real-time operating data when the risk label is currently applied to the vehicle, the risk label applied to the vehicle is cleared and the frequency tuning process ends.

6. The method according to claim 5, characterized in that, The frequency modulation strategy includes a preset time window, and if the target alarm data is not present in the real-time operating data, the risk label marked on the vehicle is cleared, including: If the target alarm data is not present in the real-time operation data received within the preset time window, then the risk label marked on the vehicle is cleared.

7. The method according to claim 6, characterized in that, The frequency modulation strategy also includes a preset number of alarms. When the current upload frequency is the preset upload frequency upper limit, the method further includes: The number of target alarm data in the real-time operation data received within the preset time window is counted. In response to the number reaching the preset alarm number, the contact person corresponding to the vehicle is identified to provide an alarm reminder.

8. The method according to claim 1 or 7, characterized in that, If the current upload frequency is the preset upload frequency upper limit, no frequency adjustment operation will be performed.

9. The method according to claim 5 or 6, characterized in that, After removing the risk tags marked on the vehicle, the method further includes: incrementing the count of short-term alarm monitoring for the vehicle by one.

10. The method according to claim 9, characterized in that, The method further includes: The number of current short-term alarm monitoring times for the DC-DC converter within a specific operating cycle is counted. Based on the statistical count of the current short-term alarm monitoring, analyze whether the DC-DC converter is abnormal; If the DC-DC converter is found to be malfunctioning, an abnormality prompt message is generated for the DC-DC converter and sent to the vehicle terminal so that the vehicle terminal can display the abnormality prompt message to the occupants.

11. The method according to claim 10, characterized in that, The number of current short-term alarm monitoring times for the DC-DC converter within a specific operating cycle includes: In response to the real-time operation data packet containing information indicating that the DC-DC converter has exited the high-voltage operation state, the number of current short-term alarm monitoring times at the vehicle end during this high-voltage operation cycle is counted.

12. The method according to claim 10, characterized in that, The analysis of whether the DC-DC converter is abnormal includes: The number of historical short-term alarm monitoring times at the vehicle end during the historical high-voltage operation cycle is obtained, and the change in the current number of short-term alarm monitoring times is determined based on the historical number of short-term alarm monitoring times and the current number of short-term alarm monitoring times. In response to the change in the current short-term alarm monitoring count indicating an upward trend, it is determined that the DC-DC converter is malfunctioning.

13. The method according to claim 1, characterized in that, When the target alarm data only includes temperature difference alarm data, the frequency modulation strategy is the first frequency modulation multiple; When the target alarm data includes abnormal status alarm data, the frequency modulation strategy is a second frequency modulation multiple; wherein, the first frequency modulation multiple is less than the second frequency modulation multiple.

14. A control method for a vehicle DC-DC converter, characterized in that, Applied to the vehicle end, the method includes: Collect real-time operating data of the DC-DC converter; The real-time operating data of the DC-DC converter is transmitted to the server according to the current upload frequency. Receive the frequency modulation command sent by the server to perform frequency modulation processing and obtain the updated current upload frequency; The newly acquired real-time operating data of the DC-DC converter is transmitted to the server according to the updated current upload frequency.

15. The method according to claim 14, characterized in that, The method further includes: In response to the monitoring that the DC-DC converter has entered a high-voltage operating state, information indicating that the DC-DC converter has entered a high-voltage operating state is added to the real-time operating data; In response to monitoring that the DC-DC converter has exited the high-voltage operation state, information indicating that the DC-DC converter has exited the high-voltage operation state is added to the real-time operation data.

16. The method according to claim 14, characterized in that, The method further includes: Receive the DC-DC converter error message transmitted by the server; In response to the monitoring that the DC-DC converter has re-entered the high-voltage operation state, an abnormal prompt message for the DC-DC converter is displayed at a preset location.

17. A control device for a vehicle DC-DC converter, characterized in that, Applied to the server side, the device includes: The receiving module is used to receive real-time operating data of the DC-DC converter transmitted by the vehicle at the current upload frequency; The frequency modulation module is used to respond to the presence of target alarm data in the real-time operating data, and update the current upload frequency according to the frequency modulation strategy preset for the target alarm data, the current upload frequency, and the preset upload frequency upper limit; The instruction module is used to generate frequency modulation instructions for the real-time running data based on the updated current upload frequency; The sending module is used to send the frequency modulation command to the vehicle terminal to receive the real-time operating data of the DC-DC converter transmitted by the vehicle terminal according to the updated current upload frequency.

18. A control device for a vehicle DC-DC converter, characterized in that, Applied to the vehicle end, the device includes: The acquisition module is used to collect real-time operating data of the DC-DC converter; The first upload module is used to transmit the real-time operating data of the DC-DC converter to the server according to the current upload frequency. The update module is used to receive the frequency modulation command sent by the server to perform frequency modulation processing and obtain the updated current upload frequency; The second upload module is used to transmit the newly collected real-time operating data of the DC-DC converter to the server according to the updated current upload frequency.

19. A server, characterized in that, Includes the control device for vehicle DC-DC converters as described in claim 17.

20. A vehicle, characterized in that, Includes the control device for vehicle DC-DC converters as described in claim 18.

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