Low-voltage power supply management system

Abstract

The invention discloses a low-voltage power supply management system, which belongs to the technical field of automobile power supply management, and comprises a voltage transformation control module which is respectively connected with a starting energy storage module, a standby energy storage module and a power battery and is used for converting high voltage of the power battery into low voltage and charging the starting energy storage module and the standby energy storage module; the starting energy storage module is used for providing electric energy for a vehicle controller and a low-voltage load; the standby energy storage module is used for supplying power to the low-voltage load when the starting energy storage module is insufficient in electric quantity; the energy storage monitoring module is connected with the starting energy storage module and used for monitoring the state of the starting energy storage module to obtain first state data; and the power supply control module is used for controlling power supply distribution of the vehicle controller and the low-voltage load according to the first state data. By adding the redundant power supply loop, the problem that the vehicle cannot be started due to power shortage of a single power supply can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile power management, and in particular to a low-voltage power management system. Background Art

[0002] As the main types of new energy vehicles, hybrid and pure electric vehicles occupy an increasingly important position in the market. However, these vehicles have some problems in low-voltage power management, especially the problem of low-voltage battery power loss, which directly affects the normal use of the vehicle and user satisfaction.

[0003] At present, most hybrid and pure electric vehicles use a power architecture solution that combines a starting lead-acid battery with intelligent charging. This solution monitors the state of charge (SOC) of the low-voltage battery through an intelligent battery sensor (IBS), and when the SOC value is lower than the set value, it requests high voltage on the power battery and then charges the low-voltage battery through DC / DC. However, due to the limitations on the battery's discharge depth and the number of charging times, the vehicle is still prone to power outages after being parked for a long time. At the same time, the battery capacity of the battery is not fully utilized, which reduces the battery's service life and efficiency. For vehicles that are abnormally awakened, if the number of intelligent charging times is used up, the low-voltage battery will still be out of power, and ultimately the entire vehicle will be unable to start. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a low-voltage power management system, which can avoid the problem of vehicle failure to start due to power failure of a single power supply by adding a redundant power supply circuit.

[0005] The above objectives can be achieved through the following solutions:

[0006] A low-voltage power supply management system comprises a starting energy storage module, a backup energy storage module, a voltage transformation control module, a power supply control module and an energy storage monitoring module; wherein the voltage transformation control module is respectively connected to the starting energy storage module, the backup energy storage module and a power battery, and is used to convert the high voltage of the power battery into a low voltage, so as to supplement the power of the starting energy storage module and the backup energy storage module; the starting energy storage module is used to provide electric energy for a vehicle controller and a low-voltage load; the backup energy storage module is used to supply power to the low-voltage load when the starting energy storage module is insufficient in power; the energy storage monitoring module is connected to the starting energy storage module, and is used to monitor the state of the starting energy storage module and obtain first state data; the power supply control module is used to control the power distribution of the vehicle controller and the low-voltage load according to the first state data.

[0007] Optionally, the system further includes a backup monitoring module; wherein the backup monitoring module is connected to the backup energy storage module and is used to monitor the status of the backup energy storage module to obtain second status data.

[0008] Optionally, the system also includes: a communication transmission module, the communication transmission module includes a vehicle-mounted terminal, a vehicle networking service platform and a mobile terminal; wherein the starting energy storage module is connected to the vehicle-mounted terminal for powering the vehicle-mounted terminal; the vehicle-mounted terminal is respectively connected to the energy storage monitoring module and the standby monitoring module for receiving the first status data and the second status data, and generating a corresponding early warning signal according to the first status data and the second status data; the vehicle networking service platform is communicatively connected to the vehicle-mounted terminal for receiving the early warning signal sent by the vehicle-mounted terminal; the mobile terminal is communicatively connected to the vehicle networking service platform for receiving the early warning signal sent by the vehicle networking service platform.

[0009] Optionally, the receiving of the first status data and the second status data, and generating a corresponding warning signal according to the first status data and the second status data includes: receiving the first status data, and judging whether the SOC value of the starting energy storage module is less than a preset first threshold value according to the first status data; if so, generating a low battery warning signal and sending it to the Internet of Vehicles service platform.

[0010] Optionally, the power control module includes a first power controller and a second power controller; wherein, one end of the first power controller is respectively connected to the voltage transformation control module, the backup energy storage module and the low-voltage load, and the other end of the first power controller is respectively connected to one end of the second power controller, the vehicle terminal, the vehicle controller, and the safety load; the other end of the second power controller is connected to the starting energy storage module; and the energy storage monitoring module is respectively communicatively connected to the first power controller and the second power controller.

[0011] Based on the same inventive concept, the present invention also provides a low-voltage power supply management method, which includes: the first power supply controller determines whether the SOC value of the starting energy storage module is less than a preset second threshold value based on the first status data; if so, the first power supply controller disconnects the low-voltage load from the starting energy storage module; and the backup energy storage module supplies power to the low-voltage load.

[0012] Optionally, the method also includes: the vehicle controller determines whether the SOC value of the starting energy storage module is less than a preset third threshold value based on the first status data; if so, the vehicle controller intelligently recharges the starting energy storage module; the vehicle controller determines whether the SOC value of the backup energy storage module is less than a preset fourth threshold value based on the second status data; if so, intelligently recharges the backup energy storage module; wherein, when the SOC value of the starting energy storage module is greater than or equal to a preset fifth threshold value, the recharging is stopped.

[0013] Optionally, the method also includes: when the number of intelligent power replenishments is used up, judging whether the SOC value of the backup energy storage module is greater than the fourth threshold value according to the second status data; if not, judging whether the SOC value of the backup energy storage module is greater than the preset sixth threshold value; if the SOC value of the backup energy storage module is greater than the sixth threshold value, generating an abnormal power consumption warning signal and sending it to the Internet of Vehicles service platform; the mobile terminal prompts the user to control the vehicle to enter a high-voltage state through the mobile terminal within a first preset time according to the abnormal power consumption warning signal sent by the Internet of Vehicles service platform.

[0014] Optionally, the judging whether the SOC value of the backup energy storage module is greater than a preset sixth threshold value includes: if the SOC value of the backup energy storage module is less than or equal to the sixth threshold value, obtaining the SOC value of the power battery, and judging whether the SOC value of the power battery is less than a preset seventh threshold value; if so, generating a first control request to power off after executing high voltage once and then powering off after a second preset time, and reminding the user to charge the power battery in time through the mobile terminal; if not, calculating the duration of maintaining the high voltage according to the SOC value of the power battery, and generating a second control request to power off after maintaining the high voltage for the duration; wherein, according to the SOC values ​​of the starting energy storage module and the backup energy storage module, the user is reminded through the mobile terminal to unlock and power off, and restore the vehicle to a dormant state.

[0015] Optionally, reminding the user to unlock and power off the vehicle through the mobile terminal includes: after the vehicle is unlocked and powered off, obtaining the static current value within a third preset time using the energy storage monitoring module and the backup monitoring module; determining whether the static current value is greater than a preset eighth threshold; if so, reminding the user to check through the mobile terminal.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. The present invention uses a starting energy storage module and a backup energy storage module in coordination to ensure that when the starting energy storage module is insufficient, the backup energy storage module can supply power to the low-voltage load in time, thereby avoiding the problem of the vehicle being unable to start due to a single power supply failure. This design not only improves the reliability of the power supply, but also meets the needs of advanced intelligent driving;

[0018] 2. The present invention monitors the SOC values ​​of the starting energy storage module and the standby energy storage module in real time through the energy storage monitoring module. When the SOC value is lower than the preset threshold, the intelligent power replenishment function is automatically triggered to ensure that the battery power is sufficient. At the same time, the system also has a low power warning function. When the battery power is insufficient, the vehicle networking service platform and the mobile terminal will promptly send a warning signal to the user to remind the user to charge or take corresponding measures.

[0019] 3. The backup energy storage module can use fixed lead-acid batteries, which support 0-100% SOC charge and discharge cycles. Compared with traditional starting batteries, its battery capacity is more fully utilized. This not only increases the service life of the battery, but also reduces the user's maintenance cost;

[0020] 4. Users can remotely control the vehicle to enter a high-voltage state or perform other operations through a mobile terminal, avoiding power loss problems caused by abnormal vehicle wake-up; at the same time, the system also has a static current monitoring function. When the vehicle is unlocked and powered off, if the static current value is too large, the system will remind the user to check through the mobile terminal to ensure the safety and stability of the vehicle.

[0021] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of a low-voltage power management system according to an embodiment of the present invention.

[0024] Figure 2 It is a flow chart of a low voltage power management method when there are power replenishment times according to an embodiment of the present invention.

[0025] Figure 3 It is a flowchart of a low-voltage power management method when there are no recharging times according to an embodiment of the present invention. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Reference Figure 1An embodiment of the present invention provides a low-voltage power management system, which can avoid the problem of vehicle failure to start due to power failure of a single power supply by adding a redundant power supply circuit.

[0028] The system of this embodiment specifically includes: a starting energy storage module, a backup energy storage module, a voltage transformation control module, a power supply control module, and an energy storage monitoring module; wherein,

[0029] The voltage conversion control module is connected to the starting energy storage module, the backup energy storage module and the power battery respectively, and is used to convert the high voltage of the power battery into a low voltage to supplement the power for the starting energy storage module and the backup energy storage module;

[0030] Specifically, the voltage conversion control module may be a DC / DC controller, which converts the high voltage of the power battery into a low voltage to replenish power for the starting energy storage module and the backup energy storage module, thereby ensuring that the energy storage module can be replenished in time when power is low, thereby maintaining the normal operation of the vehicle.

[0031] The starting energy storage module is used to provide electrical energy to the vehicle controller and the low-voltage load;

[0032] Specifically, the starting energy storage module can be a starting lead-acid battery, which is the main source of low-voltage power for the vehicle and is responsible for powering the vehicle controller and low-voltage loads; the vehicle controller can be a power battery management system (BMS), VCU, etc.

[0033] The backup energy storage module is used to supply power to the low-voltage load when the power of the starting energy storage module is insufficient;

[0034] Specifically, the backup energy storage module uses a fixed lead-acid battery that supports a SOC charge and discharge cycle from 0% to 100%. Compared with traditional starting batteries, its battery capacity is more fully utilized, which not only improves the battery life but also reduces the user's maintenance costs.

[0035] The energy storage monitoring module is connected to the starting energy storage module and is used to monitor the state of the starting energy storage module to obtain first state data;

[0036] Specifically, the energy storage monitoring module may be a battery sensor, which obtains first status data by monitoring the status of the starting energy storage module; the first status data may include the power (SOC value), temperature, current and health status (SOH) of the starting energy storage module, etc., to provide a decision basis for the power control module.

[0037] The power control module is used to control the power distribution of the vehicle controller and the low-voltage load according to the first status data.

[0038] Specifically, the power control module includes a first power controller and a second power controller; the first power controller and the second power controller can be low-power power controllers. The power control module can control the on and off of the first power controller and the second power controller according to the power status of the starting energy storage module, and intelligently adjust the power distribution strategy to ensure the stable operation of the vehicle's low-voltage system and extend the service life of the energy storage module.

[0039] Specifically, through the coordinated work of the above-mentioned modules, the low-voltage power management system provided by the present invention can effectively improve the low-voltage power supply capability of the vehicle in the OFF state, reduce the risk of vehicle power shortage, and extend the service life of the battery; at the same time, the system can also meet the needs of advanced intelligent driving and improve user satisfaction and safety.

[0040] Optionally, the system further comprises a backup monitoring module; wherein,

[0041] The backup monitoring module is connected to the backup energy storage module and is used to monitor the state of the backup energy storage module to obtain second state data.

[0042] Specifically, the backup monitoring module may be a battery sensor, which obtains second status data by monitoring the status of the backup energy storage module; the second status data may include the power (SOC value), temperature, current and health status (SOH) of the backup energy storage module, etc., providing a decision-making basis for intelligent power replenishment.

[0043] Optionally, the system further includes: a communication transmission module, the communication transmission module includes a vehicle-mounted terminal, a vehicle networking service platform and a mobile terminal; wherein,

[0044] The starting energy storage module is connected to the vehicle-mounted terminal and is used to supply power to the vehicle-mounted terminal;

[0045] The vehicle-mounted terminal is connected to the energy storage monitoring module and the standby monitoring module respectively, and is used to receive the first status data and the second status data, and generate a corresponding warning signal according to the first status data and the second status data;

[0046] Specifically, the vehicle-mounted terminal can be a vehicle-mounted intelligent communication terminal (TBOX), which is a vital component in the Internet of Vehicles system, and is mainly responsible for data communication and information interaction between the vehicle and the Internet of Vehicles service platform; TBOX integrates multiple communication technologies, such as mobile communications (such as 4G / 5G), Bluetooth, Wi-Fi, etc., to achieve comprehensive connection between the vehicle and the outside world.

[0047] The Internet of Vehicles service platform is communicatively connected with the vehicle-mounted terminal and is used to receive the warning signal sent by the vehicle-mounted terminal;

[0048] Specifically, the Internet of Vehicles service platform can be a TSP platform, which is a cloud-based system that centrally processes and manages data from multiple vehicle-mounted terminals; the TSP platform receives warning signals sent by the vehicle-mounted terminals and performs further analysis and processing; the TSP platform communicates with mobile terminals (such as smart phones, tablets, etc.) through the Internet and pushes warning signals or other important information to users.

[0049] The mobile terminal is communicatively connected to the Internet of Vehicles service platform and is used to receive the warning signal sent by the Internet of Vehicles service platform.

[0050] Specifically, the mobile terminal may be a smart phone or a tablet computer, and the user utilizes the mobile terminal to receive information from the Internet of Vehicles service platform; the user may access this information by installing corresponding applications.

[0051] Optionally, the receiving the first status data and the second status data, and generating a corresponding warning signal according to the first status data and the second status data includes:

[0052] receiving the first state data, and determining whether the SOC value of the starting energy storage module is less than a preset first threshold value according to the first state data;

[0053] If so, a low battery warning signal is generated and sent to the Internet of Vehicles service platform.

[0054] Specifically, the battery power is in the normal working range of 60% to 85%, and the first threshold may be 65%; the starting battery sensor, i.e., the energy storage monitoring module, collects the SOC value of the starting energy storage module, i.e., the starting battery. When the SOC value of the starting battery is less than 65%, the on-board terminal generates a low-battery warning signal and sends it to the TSP platform. The TSP platform pushes the low-battery warning signal to the user through the mobile terminal, for example, a low-battery reminder may be sent to the car owner through a mobile phone APP.

[0055] Optionally, the power control module includes a first power controller and a second power controller; wherein,

[0056] One end of the first power controller is connected to the voltage transformation control module, the backup energy storage module and the low-voltage load respectively, and the other end of the first power controller is connected to one end of the second power controller, the vehicle terminal, the vehicle controller and the safety load respectively; the other end of the second power controller is connected to the starting energy storage module;

[0057] The energy storage monitoring module is communicatively connected to the first power supply controller and the second power supply controller respectively.

[0058] Based on the same inventive concept, the present invention also provides a low-voltage power supply management method, which is applied to any of the aforementioned low-voltage power supply management systems, and the method comprises:

[0059] The first power controller determines whether the SOC value of the starting energy storage module is less than a preset second threshold value according to the first state data;

[0060] If so, the first power supply controller disconnects the low voltage load from the starting energy storage module;

[0061] The backup energy storage module supplies power to the low-voltage load.

[0062] For example, Figure 2 As shown, the SOC value of the starting energy storage module, i.e., the starting battery, is obtained through the first state data, and it is determined whether the SOC value is less than a second threshold value, which may be 60%; when the SOC value of the starting battery is less than 60%, the first power controller disconnects the starting battery from the low-voltage load, while the first power controller remains connected, so that the starting battery can supply power to the vehicle controller and the safety load, thereby retaining the unlocking and functional safety loop; at this time, the second power controller controls the output current of the starting battery to be lower than 10 mA, thereby reducing the risk of the starting battery running low; at this time, the low-voltage load is powered by the backup energy storage module, i.e., the fixed battery.

[0063] Optionally, the method further comprises:

[0064] The vehicle controller determines whether the SOC value of the starting energy storage module is less than a preset third threshold value according to the first state data;

[0065] If yes, the vehicle controller intelligently charges the starting energy storage module;

[0066] The vehicle controller determines whether the SOC value of the backup energy storage module is less than a preset fourth threshold value according to the second state data;

[0067] If yes, the backup energy storage module is intelligently charged;

[0068] When the SOC value of the starting energy storage module is greater than or equal to a preset fifth threshold, the power replenishment is stopped.

[0069] For example, Figure 2As shown, the third threshold value can be 50%. When the SOC value of the starting energy storage module, i.e., the starting battery, is less than the third threshold value, i.e., 50%, the vehicle controller will intelligently replenish the starting battery; the fifth threshold value can be 85%. When the SOC value of the starting battery reaches the fifth threshold value, i.e., 85%, the intelligent replenishment operation is stopped; the fourth threshold value can be 30%. When the SOC value of the backup energy storage module, i.e., the fixed battery, is less than the fourth threshold value, i.e., 30%, the vehicle controller will intelligently replenish the fixed battery.

[0070] Optionally, the method further comprises:

[0071] When the number of intelligent power replenishment times is used up, judging whether the SOC value of the backup energy storage module is greater than the fourth threshold value according to the second state data;

[0072] If not, determining whether the SOC value of the backup energy storage module is greater than a preset sixth threshold;

[0073] If the SOC value of the backup energy storage module is greater than the sixth threshold, an abnormal power consumption warning signal is generated and sent to the Internet of Vehicles service platform;

[0074] The mobile terminal prompts the user to control the vehicle to enter a high-voltage state through the mobile terminal within a first preset time according to the abnormal power consumption warning signal sent by the Internet of Vehicles service platform.

[0075] For example, Figure 3 As shown, the fourth threshold value can be 30%, the sixth threshold value can be 20%, and the first preset time can be 5 minutes; when the number of intelligent power replenishment times reaches the upper limit, the SOC value of the backup energy storage module, i.e., the fixed battery, is obtained through the second state data to determine whether the SOC value of the fixed battery is greater than the fourth threshold value, i.e., 30%. If the SOC value of the fixed battery is greater than 30%, no action is triggered; when the SOC value of the fixed battery is less than or equal to 30% and greater than the sixth threshold value, i.e., 20%, the vehicle terminal generates an abnormal power consumption warning signal and sends it to the Internet of Vehicles service platform, i.e., the TSP platform. The TSP platform sends the abnormal power consumption warning signal to the mobile terminal (such as a mobile phone), and the mobile phone can push the warning signal through the APP to remind the user that the vehicle needs to be controlled to enter a high-voltage state through the mobile phone APP within the first preset time, i.e., 5 minutes.

[0076] Optionally, the determining whether the SOC value of the backup energy storage module is greater than a preset sixth threshold comprises:

[0077] If the SOC value of the backup energy storage module is less than or equal to the sixth threshold, the SOC value of the power battery is obtained, and it is determined whether the SOC value of the power battery is less than a preset seventh threshold;

[0078] If yes, then generating a first control request to power off after a second preset time after the high voltage is applied once, and reminding the user to charge the power battery in time through the mobile terminal;

[0079] If not, then calculating the duration of maintaining the high voltage according to the SOC value of the power battery, and generating a second control request for powering off after maintaining the high voltage for the duration;

[0080] According to the SOC values ​​of the starting energy storage module and the backup energy storage module, the user is reminded to unlock and power off the vehicle through the mobile terminal to restore the vehicle to a dormant state.

[0081] For example, Figure 3 As shown, the sixth threshold value may be 20%, the second preset time may be 5 minutes, and the seventh threshold value is the lower limit of the SOC value of the vehicle power battery, for example, it may be 10%; when the SOC value of the backup energy storage module, i.e., the fixed battery, is less than or equal to the sixth threshold value, i.e., 20%, the SOC value of the power battery will be judged next. When the SOC value of the power battery is less than the seventh threshold value, i.e., 10%, the vehicle terminal will generate a first control request, and remind the user through the APP of the mobile terminal (e.g., a mobile phone) to charge the power battery in time and push the first control request. At this time, the user agrees to the first control request, and the vehicle terminal will, according to the first control request, power off after the vehicle is powered on once and after the second preset time, i.e., 5 minutes; when the SOC value of the fixed battery is less than or equal to the sixth threshold value, i.e., 20%, the vehicle terminal will power off after the second preset time, i.e., 5 minutes; When the value is less than or equal to the sixth threshold value, i.e., 20%, and the SOC value of the power battery is greater than or equal to the seventh threshold value, i.e., 10%, the vehicle terminal will generate a second control request and push the second control request through the APP of the mobile terminal (e.g., a mobile phone). At this time, if the user agrees to the second control request, the vehicle terminal will calculate the duration of maintaining high voltage (e.g., 10 minutes) based on the SOC value of the power battery according to the second control request, and after the vehicle executes high voltage, maintain the high voltage for the duration, i.e., 10 minutes before powering off; when the SOC value of the starting energy storage module, i.e., the starting battery, the backup energy storage module, and the fixed battery reaches 100%, the vehicle terminal will remind the user through the APP of the mobile terminal (e.g., a mobile phone) to unlock and power off, and restore the vehicle to sleep mode.

[0082] Optionally, the reminding the user to unlock and power off by the mobile terminal includes:

[0083] When the vehicle is unlocked and powered off, the energy storage monitoring module and the standby monitoring module are used to obtain a static current value within a third preset time;

[0084] Determining whether the static current value is greater than a preset eighth threshold;

[0085] If yes, the user is reminded to check via the mobile terminal.

[0086] Exemplarily, the third preset time can be 30 minutes. After the vehicle is unlocked and powered off, the energy storage monitoring module, the starting battery sensor, and the backup monitoring module, i.e., the fixed battery sensor, are used to obtain the static current values ​​of the starting battery and the fixed battery within the third preset time, i.e., 30 minutes; determine whether the static current value within 30 minutes is greater than the eighth threshold value. If the static current value is greater than the eighth threshold value, it is determined that the static current value is too large. At this time, the vehicle terminal reminds the user to go to the 4S shop for inspection through the APP of the mobile terminal (such as a mobile phone).

[0087] It should be noted that the electrical connection between the above-mentioned units does not necessarily mean direct connection of the lines, and the indirect connection mode can be applied to the embodiments of the present invention as long as the purpose of the present invention is achieved. The above is only an exemplary embodiment of the present invention and cannot be used to limit the scope of the present invention.

[0088] That is, any equivalent changes and modifications made according to the teachings of the present invention are still within the scope of the present invention. After considering the disclosure of the specification and the truth of practice, those skilled in the art will easily think of other embodiments of the present invention. This application is intended to cover any variation, use or adaptive change of the present invention, which follows the general principles of the present invention and includes common knowledge or customary technical means in the art that are not described in the present invention.

Claims

1. A low voltage power management system, characterized in that: The system includes: a starting energy storage module, a backup energy storage module, a voltage transformation control module, a power supply control module, and an energy storage monitoring module; wherein, The voltage conversion control module is connected to the starting energy storage module, the backup energy storage module and the power battery respectively, and is used to convert the high voltage of the power battery into a low voltage to supplement the power for the starting energy storage module and the backup energy storage module; The starting energy storage module is used to provide electrical energy to the vehicle controller and the low-voltage load; The backup energy storage module is used to supply power to the low-voltage load when the power of the starting energy storage module is insufficient; The energy storage monitoring module is connected to the starting energy storage module and is used to monitor the state of the starting energy storage module to obtain first state data; The power control module is used to control the power distribution of the vehicle controller and the low-voltage load according to the first status data.

2. A low voltage power management system according to claim 1, characterized in that: The system also includes a backup monitoring module; wherein, The backup monitoring module is connected to the backup energy storage module and is used to monitor the state of the backup energy storage module to obtain second state data.

3. A low voltage power management system according to claim 2, characterized in that: The system further includes: a communication transmission module, which includes a vehicle-mounted terminal, a vehicle networking service platform and a mobile terminal; wherein, The starting energy storage module is connected to the vehicle-mounted terminal and is used to supply power to the vehicle-mounted terminal; The vehicle-mounted terminal is connected to the energy storage monitoring module and the standby monitoring module respectively, and is used to receive the first status data and the second status data, and generate a corresponding warning signal according to the first status data and the second status data; The Internet of Vehicles service platform is communicatively connected with the vehicle-mounted terminal and is used to receive the warning signal sent by the vehicle-mounted terminal; The mobile terminal is communicatively connected to the Internet of Vehicles service platform and is used to receive the warning signal sent by the Internet of Vehicles service platform.

4. A low voltage power management system according to claim 3, characterized in that: The receiving the first status data and the second status data, and generating a corresponding warning signal according to the first status data and the second status data comprises: receiving the first state data, and determining whether the SOC value of the starting energy storage module is less than a preset first threshold value according to the first state data; If so, a low battery warning signal is generated and sent to the Internet of Vehicles service platform.

5. A low voltage power management system according to claim 3, characterized in that: The power control module includes a first power controller and a second power controller; wherein, One end of the first power controller is connected to the voltage transformation control module, the backup energy storage module and the low-voltage load respectively, and the other end of the first power controller is connected to one end of the second power controller, the vehicle terminal, the vehicle controller and the safety load respectively; the other end of the second power controller is connected to the starting energy storage module; The energy storage monitoring module is communicatively connected to the first power supply controller and the second power supply controller respectively.

6. A low voltage power supply management method, applied to the low voltage power supply management system according to any one of claims 1 to 5, characterized in that: The method comprises: The first power controller determines whether the SOC value of the starting energy storage module is less than a preset second threshold value according to the first state data; If so, the first power supply controller disconnects the low voltage load from the starting energy storage module; The backup energy storage module supplies power to the low-voltage load.

7. A low voltage power supply management method according to claim 6, characterized in that: The method further comprises: The vehicle controller determines whether the SOC value of the starting energy storage module is less than a preset third threshold value according to the first state data; If yes, the vehicle controller intelligently charges the starting energy storage module; The vehicle controller determines whether the SOC value of the backup energy storage module is less than a preset fourth threshold value according to the second state data; If yes, the backup energy storage module is intelligently charged; When the SOC value of the starting energy storage module is greater than or equal to a preset fifth threshold, the power replenishment is stopped.

8. A low voltage power supply management method according to claim 7, characterized in that: The method further comprises: When the number of intelligent power replenishment times is used up, judging whether the SOC value of the backup energy storage module is greater than the fourth threshold value according to the second state data; If not, determining whether the SOC value of the backup energy storage module is greater than a preset sixth threshold; If the SOC value of the backup energy storage module is greater than the sixth threshold, an abnormal power consumption warning signal is generated and sent to the Internet of Vehicles service platform; The mobile terminal prompts the user to control the vehicle to enter a high-voltage state through the mobile terminal within a first preset time according to the abnormal power consumption warning signal sent by the Internet of Vehicles service platform.

9. A low voltage power supply management method according to claim 8, characterized in that: The determining whether the SOC value of the backup energy storage module is greater than a preset sixth threshold value includes: If the SOC value of the backup energy storage module is less than or equal to the sixth threshold, the SOC value of the power battery is obtained, and it is determined whether the SOC value of the power battery is less than a preset seventh threshold; If yes, then generating a first control request to power off after a second preset time after the high voltage is applied once, and reminding the user to charge the power battery in time through the mobile terminal; If not, then calculating the duration of maintaining the high voltage according to the SOC value of the power battery, and generating a second control request for powering off after maintaining the high voltage for the duration; According to the SOC values ​​of the starting energy storage module and the backup energy storage module, the user is reminded to unlock and power off the vehicle through the mobile terminal to restore the vehicle to a dormant state.

10. A low voltage power management method according to claim 9, characterized in that: The reminding the user to unlock and power off by the mobile terminal includes: When the vehicle is unlocked and powered off, the energy storage monitoring module and the standby monitoring module are used to obtain a static current value within a third preset time; Determining whether the static current value is greater than a preset eighth threshold; If yes, the user is reminded to check via the mobile terminal.

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