A power supply management method and system for a driving recorder

Abstract

The present invention discloses a power supply management method and system for a driving recorder, belonging to the technical field of power management. The method includes periodically collecting light intensity data, calculating a photovoltaic output power value based on the light intensity data; calculating a required power value according to the requirements of the driving recorder; allocating the power supply ratios of the energy storage module, the solar module, and the vehicle-mounted power supply module based on the photovoltaic output power value and the required power value to generate a control instruction; and controlling the energy storage module, the solar module, and the vehicle-mounted power supply module to supply power to the driving recorder according to the control instruction. By periodically collecting light intensity data, calculating the photovoltaic output power, and combining the required power of the driving recorder, the present invention dynamically allocates the power supply ratios of the energy storage module, the solar module, and the vehicle-mounted power supply module, realizing the efficient utilization of renewable energy such as solar energy and ensuring the power supply stability and endurance of the driving recorder.

Description

Technical Field

[0001] The present invention relates to the technical field of power management, and in particular to a power supply management method and system for a driving recorder. Background Art

[0002] At present, as an important auxiliary device for automobiles, the power supply problem of driving recorders has always attracted much attention. The traditional power supply method of driving recorders mainly relies on in-vehicle power supply modules, that is, directly obtaining electrical energy from the vehicle's battery or cigarette lighter socket. However, this method has many deficiencies. For example, when the vehicle is turned off or the battery power is insufficient, the driving recorder will not be able to work properly, resulting in the interruption or loss of driving records. In addition, long-term use of the in-vehicle power supply module may also damage the vehicle battery and shorten the service life of the battery.

[0003] To solve the above problems, people have begun to try other power supply methods, such as energy storage modules and solar modules. The energy storage module can provide electrical energy for the driving recorder when the vehicle is turned off or the battery power is insufficient, ensuring the continuity of driving records. The solar module can use solar energy to supply power to the driving recorder, realizing the sustainable utilization of energy. However, how to reasonably allocate and manage the power supply ratios of these power supply modules to ensure the normal operation of the driving recorder and the maximum utilization of energy has become an urgent problem to be solved. Summary of the Invention

[0004] To solve the above problems, the present invention provides a power supply management method and system for a driving recorder. By periodically collecting light intensity data, calculating the photovoltaic output power, and combining with the required power of the driving recorder, the power supply ratios of the energy storage module, solar module, and in-vehicle power supply module are dynamically allocated to achieve the efficient utilization of renewable energy such as solar energy and ensure the power supply stability and endurance of the driving recorder.

[0005] The above object can be achieved by the following solutions:

[0006] A power supply management method for a driving recorder, comprising: periodically collecting light intensity data, and calculating a photovoltaic output power value according to the light intensity data; calculating a required power value according to the requirements of the driving recorder; allocating the power supply ratios of the energy storage module, solar module, and in-vehicle power supply module according to the photovoltaic output power value and the required power value, and generating a control instruction; and controlling the energy storage module, solar module, and in-vehicle power supply module to supply power to the driving recorder according to the control instruction.

[0007] Further, the step of allocating the power supply ratios of the energy storage module, the solar module, and the vehicle-mounted power supply module according to the photovoltaic output power value and the demand power value to generate a control instruction includes: determining the magnitude relationship between the photovoltaic output power value and a preset first threshold; when the photovoltaic output power value is less than the first threshold, obtaining the output power of the vehicle-mounted power supply module; determining whether the output power of the vehicle-mounted power supply module is 0; if so, supplying power solely using the energy storage module according to the magnitude of the demand power value, and generating a first instruction.

[0008] Further, the step of determining whether the output power of the vehicle-mounted power supply module is 0 includes: if the output power of the vehicle-mounted power supply module is not 0, collecting the power amount value of the energy storage module, and determining whether the power amount value is greater than a preset second threshold; if so, supplying power using the energy storage module and the vehicle-mounted power supply module according to the magnitude of the demand power value, and generating a second instruction; if not, supplying power solely using the vehicle-mounted power supply module according to the magnitude of the demand power value and charging the energy storage module, and generating a third instruction.

[0009] Further, the step of supplying power using the energy storage module and the vehicle-mounted power supply module according to the magnitude of the demand power value and generating a second instruction includes: calculating the ratio of the power amount value of the energy storage module to the capacity value of the energy storage module to obtain a power amount ratio; using the power amount ratio to calculate the power supply ratios of the energy storage module and the vehicle-mounted power supply module to obtain a first ratio value. For the first ratio value , there is: ;

[0010] wherein, is the power amount ratio; allocating the power supply ratios of the energy storage module and the vehicle-mounted power supply module according to the first ratio value, and generating a second instruction.

[0011] Further, the step of determining the magnitude relationship between the photovoltaic output power value and a preset first threshold includes: when the photovoltaic output power value is greater than the first threshold, determining whether the photovoltaic output power value is greater than the demand power value; if so, supplying power solely using the solar module according to the magnitude of the demand power value and charging the energy storage module, and generating a fourth instruction.

[0012] Further, the determination of whether the photovoltaic output power value is greater than the demand power value includes: when the photovoltaic output power value is less than or equal to the demand power value, it is determined whether the output power of the vehicle-mounted power supply module is 0; if so, power is supplied using the solar module and the energy storage module according to the magnitude of the demand power value, and a fifth instruction is generated; if not, power is supplied using the solar module and the vehicle-mounted power supply module according to the magnitude of the demand power value, and a sixth instruction is generated.

[0013] Further, the supplying power using the solar module and the energy storage module according to the magnitude of the demand power value and generating a fifth instruction includes: calculating the difference between the demand power value and the photovoltaic output power value; calculating the power supply ratio of the energy storage module and the solar module according to the magnitude of the difference to obtain a second ratio value. For the second ratio value , there is: ;

[0014] wherein, is the demand power value, is the photovoltaic output power value; the power supply ratio of the solar module and the energy storage module is allocated according to the second ratio value, and a fifth instruction is generated.

[0015] Further, the supplying power using the solar module and the vehicle-mounted power supply module according to the magnitude of the demand power value includes: collecting the power value of the energy storage module and determining whether the power value of the energy storage module is greater than a preset third threshold; if so, the power supply ratio of the vehicle-mounted power supply module and the solar module is allocated according to the second ratio value; if not, the power supply ratio of the vehicle-mounted power supply module and the solar module is calculated using the power ratio value, the photovoltaic output power value, and the demand power value to obtain a third ratio value. For the third ratio value , there is: ;

[0016] wherein, is the demand power value, is the photovoltaic output power value, is the current power ratio value; the power supply ratio of the vehicle-mounted power supply module and the solar module is allocated according to the third ratio value, and the energy storage module is charged.

[0017] Further, the method further includes: monitoring the power value of the energy storage module in real time, and judging the magnitude relationship between the power value of the energy storage module and a preset fourth threshold; when the power value of the energy storage module is less than the fourth threshold, switching to a preset backup energy storage module for power supply; monitoring the power value of the backup energy storage module in real time, and judging whether the power value of the backup energy storage module is 100%; if not, when the output power of the vehicle-mounted power supply module is greater than 0, the vehicle-mounted power supply module charges the backup energy storage module.

[0018] Based on the same inventive concept, the present invention further provides a power supply management system for a driving recorder, the system includes: a light analysis module, configured to periodically collect light intensity data and calculate a photovoltaic output power value according to the light intensity data; a rated power calculation module, configured to calculate a required power value according to the requirements of the driving recorder; a power distribution module, configured to allocate the power supply ratios of the energy storage module, the solar module and the vehicle-mounted power supply module according to the photovoltaic output power value and the required power value, and generate a control instruction; a power supply control module, configured to control the energy storage module, the solar module and the vehicle-mounted power supply module to supply power to the driving recorder according to the control instruction.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] 1. The present invention dynamically allocates the power supply ratios of the energy storage module, the solar module and the vehicle-mounted power supply module by periodically collecting light intensity data and calculating the photovoltaic output power, and combining with the required power of the driving recorder; this method can efficiently utilize renewable energy such as solar energy and reduce the dependence on non-renewable energy;

[0021] 2. When the vehicle is turned off or the battery power is insufficient, the traditional power supply method of the driving recorder may cause power supply interruption. However, the present invention ensures the power supply stability and endurance of the driving recorder and avoids the loss of driving records by introducing the energy storage module and the solar module and intelligently allocating their power supply ratios;

[0022] 3. The present invention adjusts the power supply ratios of each power supply module in real time according to the power state of the energy storage module, the photovoltaic output power and the required power of the driving recorder; this dynamic allocation strategy optimizes the energy use efficiency, meets the power requirements of the driving recorder, and avoids energy waste;

[0023] 4. By monitoring the power value of the energy storage module in real time and switching to the backup energy storage module for power supply when the power is insufficient, the present invention enhances the flexibility and reliability of the system; this ensures that the driving recorder can continue to work stably even when the main energy storage module runs out of power;

[0024] 5. By reasonably allocating the power supply ratios of each power supply module, the present invention avoids relying on the vehicle-mounted power supply module for a long time, thereby extending the service life of the device.

[0025] Other features and advantages of the present invention will be described in the following specification, and in part will be obvious from the specification, or will be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the structures pointed out in the specification, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 It is a schematic flowchart of a power supply management method for a driving recorder according to an embodiment of the present invention.

[0028] Figure 2 It is an execution flowchart of a power supply management method for a driving recorder according to an embodiment of the present invention.

[0029] Figure 3 It is a schematic structural diagram of a power supply management system for a driving recorder according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0031] Refer to Figure 1 , an embodiment of the present invention proposes a power supply management method for a driving recorder. By periodically collecting light intensity data, calculating the photovoltaic output power, and combining with the required power of the driving recorder, the power supply ratios of the energy storage module, solar module, and vehicle-mounted power supply module are dynamically allocated to achieve efficient utilization of renewable energy such as solar energy and ensure the power supply stability and endurance of the driving recorder.

[0032] The method of this embodiment specifically includes:

[0033] Such asFigure 2 As shown, the light intensity data is collected periodically, and the photovoltaic output power value is calculated based on the light intensity data;

[0034] Specifically, by periodically collecting the ambient light intensity data and using relevant algorithms or models, the output power value that the solar module (such as a photovoltaic panel) can generate under the current light conditions can be calculated; this value reflects the power generation ability of the solar module under the current light conditions.

[0035] The required power value is calculated according to the requirements of the dash cam;

[0036] Specifically, when the dash cam is working, it has a certain power requirement, and this required power value may vary depending on the model of the dash cam, its working state (such as the quality of the recorded video, whether other functions are turned on, etc.), and environmental factors (such as temperature, etc.); through relevant calculations or look-up tables, the required power value of the current dash cam can be obtained.

[0037] According to the photovoltaic output power value and the required power value, the power supply ratios of the energy storage module, the solar module, and the vehicle-mounted power supply module are allocated to generate a control command;

[0038] Specifically, after obtaining the photovoltaic output power value and the dash cam's required power value, these two values are used to determine how to allocate the power supply ratios of the energy storage module, the solar module, and the vehicle-mounted power supply module; this allocation process ensures that while meeting the power requirements of the dash cam, renewable energy (such as solar energy) is utilized as much as possible, and the use of the energy storage module is optimized; after the allocation is completed, corresponding control commands are generated.

[0039] According to the control command, the energy storage module, the solar module, and the vehicle-mounted power supply module are controlled to supply power to the dash cam.

[0040] Specifically, the working states of each power supply module are controlled according to the generated control command; for example, if the control command indicates that the solar module and the energy storage module supply power together, the output powers of these two modules will be adjusted accordingly to ensure that the dash cam can work properly; if the vehicle-mounted power supply module is also selected as a power supply source, the output power of the vehicle-mounted power supply module will be controlled simultaneously.

[0041] Specifically, by periodically collecting the light intensity data and calculating and allocating the power supply ratios of each power supply module based on these data and the requirements of the dash cam, the intelligent management of the power supply to the dash cam is realized. This method not only improves the reliability and stability of the power supply but also optimizes the energy use efficiency.

[0042] Furthermore, as Figure 2As shown, the power supply ratios of the energy storage module, the solar module, and the vehicle-mounted power supply module are allocated according to the photovoltaic output power value and the demand power value, and the generated control instructions include:

[0043] Judge the magnitude of the photovoltaic output power value and a preset first threshold;

[0044] Specifically, the first threshold is a value used to judge whether there is light. When there is no light, it is possible to collect interfering light intensity data, thus calculating a very small photovoltaic output power value. If the first threshold is set to 0, there will be errors; therefore, a relatively small first threshold needs to be set to exclude interference; when the photovoltaic output power value is less than the first threshold, it is considered that the current light condition is insufficient and the solar module cannot supply power effectively.

[0045] When the photovoltaic output power value is less than the first threshold, obtain the output power of the vehicle-mounted power supply module;

[0046] Judge whether the output power of the vehicle-mounted power supply module is 0;

[0047] If so, supply power alone using the energy storage module according to the magnitude of the demand power value, and generate a first instruction.

[0048] Specifically, after confirming that the photovoltaic output power value is less than the first threshold, the output power of the vehicle-mounted power supply module will be checked; if the output power of the vehicle-mounted power supply module is not 0, it means that the vehicle is in a starting state and the vehicle-mounted power supply module can work normally and provide power.

[0049] Furthermore, judging whether the output power of the vehicle-mounted power supply module is 0 includes:

[0050] If the output power of the vehicle-mounted power supply module is not 0, collect the power value of the energy storage module and judge whether the power value is greater than a preset second threshold;

[0051] If so, supply power using the energy storage module and the vehicle-mounted power supply module according to the magnitude of the demand power value, and generate a second instruction;

[0052] If not, supply power alone using the vehicle-mounted power supply module and charge the energy storage module, and generate a third instruction.

[0053] Specifically, if the output power of the vehicle-mounted power supply module is not 0, the current power value of the energy storage module will be collected; the second threshold is a relatively large threshold, which is a critical value for judging whether the energy storage module has sufficient power; it is usually set based on the capacity and design requirements of the energy storage module; if the power value of the energy storage module is greater than the second threshold, it is considered that the energy storage module has enough power to participate in power supply; if the power value is not greater than the second threshold, it is considered that the power of the energy storage module is low and it needs to be charged preferentially.

[0054] Further, according to the magnitude of the required power value, the energy storage module and the vehicle-mounted power supply module are used for power supply, and the generated second instruction includes:

[0055] Calculate the ratio of the power value of the energy storage module to the capacity value of the energy storage module to obtain the power ratio;

[0056] Using the power ratio, calculate the power supply ratio of the energy storage module and the vehicle-mounted power supply module to obtain the first ratio value. For the first ratio value , there is: ;

[0057] In the formula, is the power ratio;

[0058] Allocate the power supply ratio of the energy storage module and the vehicle-mounted power supply module according to the first ratio value, and generate a second instruction.

[0059] Specifically, when the power value of the energy storage module is greater than the second threshold, the ratio of the power value of the energy storage module to the capacity value of the energy storage module (power ratio) will be calculated; using the power ratio, calculate the power supply ratio of the energy storage module and the vehicle-mounted power supply module (the first ratio value); the calculation formula is , where is the power ratio. This formula is designed to dynamically adjust the power supply ratio according to the power situation of the energy storage module to optimize energy use. According to the calculated power supply ratio, generate the corresponding control instruction (the second instruction), requiring the energy storage module and the vehicle-mounted power supply module to supply power according to the specified ratio.

[0060] Exemplarily, assume that the required power of the driving recorder is 200W, the preset first threshold is 10W (used to exclude interference data under no light or extremely weak light), and the preset second threshold is 40% of the capacity of the energy storage module; it is detected that the photovoltaic output power is 5W (less than the first threshold of 10W), and it is considered that the current light condition is insufficient and the solar module cannot supply power effectively; it is detected that the output power of the vehicle-mounted power supply module is 300W (not 0), and it is considered that the vehicle is in the starting state and the vehicle-mounted power supply module can work normally; then the power value of the energy storage module collected is 50% of the capacity of the energy storage module (greater than the second threshold of 40%), and it is considered that the energy storage module has enough power to participate in power supply. Calculate the power ratio to be 0.5, and then calculate the power supply ratio, that is, the first ratio value, according to the formula as , that is, the energy storage module and the vehicle-mounted power supply module each undertake half of the power supply task; therefore, generate a second instruction, requiring the energy storage module to supply power at a power of 100W (200W * 0.5), and the vehicle-mounted power supply module to also supply power at a power of 100W.

[0061] Further, determining the magnitude of the photovoltaic output power value and the preset first threshold includes:

[0062] When the photovoltaic output power value is greater than the first threshold, it is determined whether the photovoltaic output power value is greater than the demand power value;

[0063] Specifically, when the photovoltaic output power value is greater than the preset first threshold, it is considered that the current lighting condition is good and the solar module can supply power effectively; Next, it will be further determined whether the photovoltaic output power value is greater than the demand power value to determine whether all or part of the output of the solar module needs to be used to meet the demand and consider whether to charge the energy storage module.

[0064] If so, according to the magnitude of the demand power value, the solar module is used to supply power alone and the energy storage module is charged to generate a fourth instruction.

[0065] Specifically, first, the photovoltaic output power value will be compared with the preset first threshold. If the photovoltaic output power value is greater than the first threshold, it is considered that there is enough sunlight to generate electricity currently; Next, it will be determined whether the photovoltaic output power value is greater than the demand power value, which is to determine whether the electricity generated by the solar module is sufficient to meet the current demand and there is surplus for charging the energy storage module; If the photovoltaic output power value is greater than the demand power value, then according to the magnitude of the demand power value, the solar module will be used to supply power alone. At this time, since the generated electricity is more than the demand, the excess electricity will be used to charge the energy storage module; A fourth instruction will be generated, which will instruct the solar module to supply power at an appropriate power output and at the same time start the charging process of the energy storage module.

[0066] Exemplarily, assume that the demand power of the dash cam is 150W, the preset first threshold is 5W, and the current photovoltaic output power is 200W; It is detected that the photovoltaic output power is 200W, which is greater than the first threshold of 5W. Therefore, it is considered that the current lighting condition is good and the solar module can supply power effectively; Further compare the photovoltaic output power of 200W with the demand power of 150W, and it is found that the photovoltaic output power is greater than the demand power; According to the comparison result, it is decided to use the solar module to supply power alone to meet the 150W demand of the dash cam; At the same time, since 50W of the 200W of generated electricity is redundant, this part of the electricity will be used to charge the energy storage module; Generate a fourth instruction, instructing the solar module to supply power to the dash cam at a power output of 150W and at the same time start the charging process of the energy storage module, with a charging power of 50W (or adjusted according to the actual charging efficiency and the state of the energy storage module); Through such a logical design, the solar energy resources can be utilized efficiently, meeting the current power demand and being able to charge the energy storage module for emergencies.

[0067] Further, determining whether the photovoltaic output power value is greater than the demand power value includes:

[0068] When the photovoltaic output power value is less than or equal to the required power value, it is determined whether the output power of the vehicle power supply module is 0;

[0069] If yes, then according to the required power value, the solar module and the energy storage module are used for power supply, and a fifth instruction is generated;

[0070] If not, the solar module and the vehicle-mounted power supply module are used for power supply according to the required power value, and a sixth instruction is generated.

[0071] Specifically, when the photovoltaic output power value is less than or equal to the required power value, it indicates that the electricity generated by the solar module is not enough to fully meet the current demand; at this time, it is necessary to further determine whether the output power of the on-board power supply module is 0 to determine whether the on-board power supply module can be used as a supplementary power source; first, the photovoltaic output power value is compared with the required power value; if the photovoltaic output power value is less than or equal to the required power value, it is considered that the current electricity generated by the solar module is insufficient to meet the demand; next, it is determined whether the output power of the on-board power supply module is 0, in order to determine whether the on-board power supply module can be used as a backup power supply; if the output power of the on-board power supply module is 0, it means that the vehicle is in an off state and the on-board power supply module is currently unable to provide power. electricity; at this time, the solar module and the energy storage module will be used to supply power according to the size of the required power value; the energy storage module will release the stored power to supplement the insufficient part of the solar module output; at this time, the fifth instruction will be generated, instructing the solar module and the energy storage module to supply power with appropriate power output; if the output power of the on-board power supply module is not 0, it means that the vehicle is in the starting state, and the on-board power supply module can be used as a backup power supply; at this time, the solar module and the on-board power supply module will be used to supply power according to the size of the required power value; the two share the power demand to extend the service life of the solar module as much as possible and reduce the number of discharges of the energy storage module; at this time, the sixth instruction will be generated, instructing the solar module and the on-board power supply module to supply power with appropriate power output.

[0072] Furthermore, according to the required power value, the solar module and the energy storage module are used to supply power, and the fifth instruction is generated, including:

[0073] Calculate the difference between the required power value and the photovoltaic output power value;

[0074] According to the difference, the power supply ratio of the energy storage module and the solar module is calculated to obtain a second ratio value. ,have: ;

[0075] In the formula, is the required power value, is the photovoltaic output power value;

[0076] Allocate the power supply ratio of the solar module and the energy storage module according to the second ratio value to generate a fifth instruction.

[0077] Specifically, when the photovoltaic output power value is less than or equal to the demand power value and the vehicle-mounted power supply module is unable to provide power (output power is 0), it is necessary to use the solar module and the energy storage module together to meet the current power demand; at this time, the power supply ratio of the energy storage module and the solar module will be calculated according to the difference between the demand power and the photovoltaic output power; first, calculate the difference between the demand power value ( ) and the photovoltaic output power value ( ); this difference represents how much power is still needed to meet the current demand after the solar module outputs power; next, calculate the power supply ratio of the energy storage module and the solar module according to this difference; according to the calculated second ratio value ( ), the power supply ratio of the solar module and the energy storage module can be determined; the solar module will continue to supply power at the current output power ( ), while the energy storage module needs to adjust its output power according to to meet the remaining power demand; finally, a fifth instruction will be generated according to the above calculation results, and this instruction will instruct the solar module and the energy storage module to supply power at appropriate power outputs to meet the current power demand;

[0078] Furthermore, power supply using the solar module and the vehicle-mounted power supply module according to the magnitude of the demand power value includes:

[0079] Collect the power value of the energy storage module and determine whether the power value of the energy storage module is greater than a preset third threshold;

[0080] If so, allocate the power supply ratio of the vehicle-mounted power supply module and the solar module according to the second ratio value;

[0081] If not, calculate the power supply ratio of the vehicle-mounted power supply module and the solar module using the power ratio, the photovoltaic output power value, and the demand power value to obtain a third ratio value. For the third ratio value , there is: ;

[0082] In the formula, is the demand power value, is the photovoltaic output power value, is the current power ratio;

[0083] Allocate the power supply ratio of the vehicle-mounted power supply module and the solar module according to the third ratio value and charge the energy storage module.

[0084] Specifically, when it is necessary to supply power using the solar module and the vehicle-mounted power supply module, the power value of the energy storage module will be collected first, and this power value will be compared with a preset third threshold. This third threshold is usually set according to the capacity of the energy storage module, the discharge depth limit, and the protection strategy for the energy storage module; collect the current power value of the energy storage module (such as a battery) through sensors or other means; compare the collected power value with the preset third threshold. If the power value is greater than the third threshold, it means that the energy storage module has enough power to meet possible discharge requirements. At this time, the power supply ratio of the vehicle-mounted power supply module and the solar module can be allocated more flexibly; if the energy storage module has sufficient power, the power supply ratio of the vehicle-mounted power supply module and the solar module can be allocated according to the previously calculated second ratio value (based on the difference between the demand power and the photovoltaic output power); if the energy storage module has insufficient power (i.e., the power value is not greater than the third threshold), then the power supply ratio needs to be allocated more carefully; at this time, the third ratio value will be calculated based on the power ratio (the ratio of the current power of the energy storage module to the full power), the photovoltaic output power value, and the demand power value; according to the calculated power supply ratio (whether it is the value adjusted based on the second ratio value or the third ratio value), corresponding instructions will be generated to instruct the vehicle-mounted power supply module and the solar module to output power at appropriate powers; at the same time, if the power of the energy storage module is low, it will also charge the energy storage module as much as possible on the premise of meeting the demand power value to restore its power level; this is usually achieved by adjusting the power supply ratio of the vehicle-mounted power supply module and the solar module to ensure that while meeting the current demand, enough charging current is also provided for the energy storage module; at this time, the power used for charging in the photovoltaic output power is 。

[0085] Exemplarily, assume that the demand power of the dash cam is 200W, the current photovoltaic output power is 150W, the power ratio of the energy storage module is 0.7 (i.e., the current power is 70% of the full power), and the preset third threshold is 0.8; the collected power ratio of the energy storage module is 0.7, and it is judged that the power ratio of the energy storage module is not greater than the preset third threshold of 0.8. Therefore, the third ratio value is calculated , so at this time, the photovoltaic output power of 105W is required, and the output power of the vehicle-mounted power supply module is 95. At this time, the power used for charging in the photovoltaic output power is 150 - 105 = 45W. Therefore, the energy storage module is charged with 45W of power.

[0086] Furthermore, the method further includes:

[0087] Real-time monitor the power value of the energy storage module and judge the magnitude relationship between the power value of the energy storage module and a preset fourth threshold;

[0088] Specifically, the real-time monitoring of the power state of the energy storage module is further enhanced, and a backup energy storage module is introduced to ensure that when the main energy storage module runs out of power, it can quickly switch to the backup energy storage module to ensure the continuous and stable operation of the device. The power value of the main energy storage module is collected in real time through sensors or other monitoring means and monitored.

[0089] When the power value of the energy storage module is less than the fourth threshold, switch to the preset backup energy storage module for power supply;

[0090] Specifically, the power value of the main energy storage module collected in real time is compared with the preset fourth threshold, which is usually lower than the third threshold and is a more urgent power warning line. When the power value of the main energy storage module is lower than this threshold, it indicates that the power of the main energy storage module is seriously insufficient and immediate measures need to be taken. When the power value of the main energy storage module is lower than the fourth threshold, immediately switch to the preset backup energy storage module for power supply. This backup energy storage module is usually charged through the on-vehicle power supply module when the main energy storage module has sufficient power to maintain a certain power reserve.

[0091] Real-time monitor the power value of the backup energy storage module and determine whether the power value of the backup energy storage module is 100%;

[0092] If not, when the output power of the on-vehicle power supply module is greater than 0, the on-vehicle power supply module charges the backup energy storage module.

[0093] Specifically, after switching to the backup energy storage module, it is also necessary to monitor its power value in real time to ensure that it can continuously supply power to the device; determine whether the power value of the backup energy storage module has reached the full charge state (i.e., 100%); if the backup energy storage module is not fully charged, it means there is still room for charging and it can be charged at an appropriate time; when the output power of the on-vehicle power supply module is greater than 0 (i.e., the vehicle is running and the on-vehicle power supply module can generate electricity), this part of the power can be used to charge the backup energy storage module; in this way, during vehicle driving, the backup energy storage module can gradually return to the full charge state for emergencies; only the backup energy storage module uses this method for charging.

[0094] Based on the same inventive concept, as Figure 3 shown, the present invention also provides a power supply management system for a driving recorder, the system includes:

[0095] A light analysis module for periodically collecting light intensity data and calculating a photovoltaic output power value based on the light intensity data;

[0096] A rated power calculation module for calculating a required power value according to the requirements of the driving recorder;

[0097] A power distribution module, configured to allocate the power supply ratios of an energy storage module, a solar module, and a vehicle-mounted power supply module according to a photovoltaic output power value and a required power value, and generate a control instruction;

[0098] A power supply control module, configured to control the energy storage module, the solar module, and the vehicle-mounted power supply module to supply power to a driving recorder according to the control instruction.

[0099] It should be noted that the electrical connections between the above-mentioned various units do not necessarily mean direct connections of the lines. Indirect connection methods, as long as they can achieve the purpose of the present invention, are applicable to the embodiments of the present invention. The above are only exemplary embodiments of the present invention and should not be used to limit the scope of the present invention.

[0100] That is, any equivalent changes and modifications made in accordance with the teachings of the present invention still fall within the scope of the present invention. After considering the specification and the disclosure of the practice of the present invention, those skilled in the art will easily think of other implementation schemes of the present invention. This application aims to cover any variations, uses, or adaptive changes of the present invention, and these variations, uses, or adaptive changes follow the general principles of the present invention and include the common general knowledge or conventional technical means in the technical field not described in the present invention.

Claims

1. A power supply management method for a driving recorder, characterized in that The method includes: Periodically collecting light intensity data and calculating a photovoltaic output power value based on the light intensity data; Calculating a required power value according to the requirements of the driving recorder; Allocating the power supply ratios of the energy storage module, the solar module, and the vehicle-mounted power supply module based on the photovoltaic output power value and the required power value, and generating a control instruction; Controlling the energy storage module, the solar module, and the vehicle-mounted power supply module to supply power to the driving recorder according to the control instruction; Among them, the allocating the power supply ratios of the energy storage module, the solar module, and the vehicle-mounted power supply module based on the photovoltaic output power value and the required power value, and generating a control instruction includes: Judging the magnitude of the photovoltaic output power value and a preset first threshold; When the photovoltaic output power value is less than the first threshold, obtaining the output power of the vehicle-mounted power supply module; judging whether the output power of the vehicle-mounted power supply module is 0; if so, independently supplying power using the energy storage module according to the magnitude of the required power value, and generating a first instruction; When the photovoltaic output power value is greater than the first threshold, then judging whether the photovoltaic output power value is greater than the required power value; If the photovoltaic output power value is greater than the required power value, then independently supplying power using the solar module according to the magnitude of the required power value and charging the energy storage module, and generating a fourth instruction; If the photovoltaic output power value is less than or equal to the required power value, then judging whether the output power of the vehicle-mounted power supply module is 0; If so, calculating the difference between the required power value and the photovoltaic output power value; calculating the power supply ratio of the energy storage module and the solar module according to the magnitude of the difference to obtain a second ratio value. For the second ratio value P2, there is: In the formula, X is the required power value, S is the photovoltaic output power value; allocating the power supply ratios of the solar module and the energy storage module according to the second ratio value, and generating a fifth instruction; If not, then supplying power using the solar module and the vehicle-mounted power supply module according to the magnitude of the required power value, and generating a sixth instruction; Supplying power using the solar module and the vehicle-mounted power supply module according to the magnitude of the required power value includes: Collecting the power value of the energy storage module and judging whether the power value of the energy storage module is greater than a preset third threshold; If so, allocating the power supply ratios of the vehicle-mounted power supply module and the solar module according to the second ratio value; If not, then calculating the power supply ratios of the vehicle-mounted power supply module and the solar module using the power ratio value, the photovoltaic output power value, and the required power value to obtain a third ratio value. For the third ratio value P3, there is: In the formula, X is the required power value, S is the photovoltaic output power value, and D is the current power ratio value; Allocating the power supply ratios of the vehicle-mounted power supply module and the solar module according to the third ratio value, and charging the energy storage module.

2. The power supply management method for a driving recorder according to claim 1, characterized in that, The judging whether the output power of the vehicle-mounted power supply module is 0 includes: If the output power of the vehicle-mounted power supply module is not 0, the power value of the energy storage module is collected, and it is judged whether the power value is greater than a preset second threshold; If so, according to the magnitude of the required power value, the energy storage module and the vehicle-mounted power supply module are used for power supply, and a second instruction is generated; If not, according to the magnitude of the required power value, the vehicle-mounted power supply module is used for power supply alone and the energy storage module is charged, and a third instruction is generated.

3. The power supply management method for a driving recorder according to claim 2, characterized in that, The using the energy storage module and the vehicle-mounted power supply module for power supply according to the magnitude of the required power value and generating a second instruction includes: Calculating the ratio of the power value of the energy storage module to the capacity value of the energy storage module to obtain a power ratio; Using the power ratio to calculate the power supply ratio of the energy storage module and the vehicle-mounted power supply module to obtain a first ratio value. For the first ratio value P1, there is: In the formula, D is the power ratio; Allocating the power supply ratio of the energy storage module and the vehicle-mounted power supply module according to the first ratio value, and generating a second instruction.

4. The power supply management method for a driving recorder according to claim 1, characterized in that The method further includes: Real-time monitoring the power value of the energy storage module, and judging the magnitude of the power value of the energy storage module and a preset fourth threshold; When the power value of the energy storage module is less than the fourth threshold, switching to a preset backup energy storage module for power supply; Real-time monitoring the power value of the backup energy storage module, and judging whether the power value of the backup energy storage module is 100%; If not, when the output power of the vehicle-mounted power supply module is greater than 0, the vehicle-mounted power supply module charges the backup energy storage module.

5. A power supply management system for a driving recorder, which is used to implement the power supply management method for a driving recorder according to any one of claims 1-4, characterized in that, The system includes: A light analysis module, configured to periodically collect light intensity data and calculate a photovoltaic output power value according to the light intensity data; A rated power calculation module, configured to calculate a required power value according to the requirements of a driving recorder; A power distribution module, configured to allocate the power supply ratios of the energy storage module, the solar module and the vehicle-mounted power supply module according to the photovoltaic output power value and the required power value, and generate a control instruction; A power supply control module, configured to control the energy storage module, the solar module and the vehicle-mounted power supply module to supply power to the driving recorder according to the control instruction.

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