Method and device for determining power supply strategy of vehicle, storage medium and processor

Abstract

The invention discloses a method and device for determining a power supply strategy of a vehicle, a storage medium and a processor. The method comprises the following steps: acquiring voltage data of a storage battery in a vehicle; determining a power supply state of the storage battery to the vehicle based on the voltage data; in response to the condition that the power supply state is an abnormal power supply state, comparing the voltage data with different voltage data thresholds to obtain different comparison results, the comparison results being used for representing the relationship between the corresponding voltage data thresholds and the voltage data; and based on different comparison results, a power supply strategy of the vehicle is determined, and the power supply strategy is used for indicating a rule that the storage battery supplies power to the vehicle. The technical problem that the protection cost of the low-voltage power supply system is too high under the condition of voltage drop is solved.

Description

Technical Field

[0001] The present invention relates to the field of vehicles, and in particular to a method, device, storage medium and processor for determining a power supply strategy of a vehicle. Background Art

[0002] At present, in the field of electric vehicles and smart vehicles, as the degree of vehicle intelligence continues to improve, the number of electronic devices carried by low-voltage power supply systems (such as small batteries) is increasing day by day. The power demand characteristics of these devices are different. Some devices lack soft start functions, while some devices work in intermittent mode. Due to the constraints of the internal space layout of the vehicle, the transient response capabilities of small batteries or DC to DC converters (Direct Current to Direct Current Converter, referred to as DCDC) are often limited and cannot fully meet the voltage requirements when the vehicle starts or when large-load equipment suddenly starts. This causes the low-voltage power supply system to be prone to voltage drops during the startup process or at the moment of large-load startup, which in turn has a negative impact on the normal operation of the switching power supply chip or circuit that directly depends on the low-voltage power supply, and may even cause system failures, affecting the safety of vehicle operation.

[0003] In related technologies, some vehicle manufacturers have attempted to introduce high-voltage backup power systems to supplement low-voltage power supplies. However, this often comes with high costs, complex circuit design, and additional board space requirements, reducing overall design efficiency and cost-effectiveness. High-voltage backup solutions are particularly cost-effective in non-functional safety applications. Other solutions focus on rigidly protecting against voltage drops by adding power input capacitors and reverse-bias circuitry. However, this approach is insufficient for deep voltage drops or prolonged brownouts. Providing sufficient voltage support often requires connecting a large number of high-capacity electrolytic capacitors in parallel, which not only increases the inrush current during power-up but also significantly increases cost and board space, contradicting the lightweight and space-saving design principles of modern vehicles. Consequently, the cost of protecting low-voltage power systems from voltage drops remains high. This is a significant cost issue in preventing vehicle failures caused by voltage drops.

[0004] Currently, no effective solution has been proposed to the above-mentioned technical problem of excessively high cost of protecting a low-voltage power supply system in the event of a voltage drop. Summary of the Invention

[0005] Embodiments of the present invention provide a method, device, storage medium, and processor for determining a vehicle power supply strategy, so as to at least solve the technical problem of excessively high protection costs for a low-voltage power supply system in the event of a voltage drop.

[0006] According to one aspect of an embodiment of the present invention, a method for determining a vehicle's power supply strategy is provided. The method may include: obtaining voltage data from a battery in the vehicle; determining the battery's power supply status to the vehicle based on the voltage data; in response to the power supply status being an abnormal power supply status, comparing the voltage data with different voltage data thresholds to obtain different comparison results, wherein the comparison results are used to represent the relationship between the corresponding voltage data thresholds and the voltage data; and determining the vehicle's power supply strategy based on the different comparison results, wherein the power supply strategy is used to indicate the rules for the battery to supply power to the vehicle.

[0007] Optionally, based on the voltage data, the power supply status of the battery to the vehicle is determined, including: comparing the voltage data with a first voltage data threshold to obtain a first comparison result, wherein the first comparison result is the size relationship between the voltage data and the first voltage data threshold; in response to the first comparison result being that the voltage data is greater than or equal to the first voltage data threshold, determining that the power supply status is a normal power supply status; in response to the first comparison result being that the voltage data is less than the first voltage data threshold, determining that the power supply status is an abnormal power supply status.

[0008] Optionally, the voltage data threshold includes a second voltage data threshold and a third voltage data threshold. In response to the power supply state being an abnormal power supply state, the voltage data is compared with different voltage data thresholds respectively to obtain different comparison results, including: in response to the power supply state being an abnormal power supply state, the voltage data is compared with the second voltage data threshold to obtain a second comparison result, wherein the second comparison result is the size relationship between the voltage data and the second voltage data threshold, and the second voltage threshold is less than the first voltage data threshold; in response to the second comparison result being that the voltage data is less than the second voltage data threshold, the voltage data is compared with the third voltage data threshold to obtain a third comparison result, wherein the third comparison result is the size relationship between the voltage data and the third voltage data threshold, and the third voltage threshold is less than the second voltage data threshold.

[0009] Optionally, based on different comparison results, the power supply strategy of the vehicle is determined, including: in response to the second comparison result that the voltage data is greater than or equal to the second voltage data threshold, determining the power supply strategy to be the first power supply strategy, wherein the first power supply strategy is a rule that the battery uses the second diode to power the vehicle, and the second diode and the first diode are connected at different positions in the vehicle; in response to the third comparison result that the voltage data is less than the third voltage data threshold, determining the difference result, wherein the difference result is used to indicate the difference between different times of obtaining the voltage data; in response to the difference result being less than the difference threshold, determining the power supply strategy to be the second power supply strategy, wherein the second power supply strategy is a rule that the battery uses the auxiliary power supply to power the vehicle.

[0010] Optionally, in response to the third comparison result being that the voltage data is less than a third voltage data threshold, a difference result is determined, including: obtaining the voltage data of the vehicle battery at a first moment and the power supply state being an abnormal power supply state at a second moment; performing a difference operation between the first moment and the second moment to obtain a difference result.

[0011] Optionally, the method for determining the power supply strategy of a vehicle further includes: in response to the power supply state being a normal power supply state, determining the power supply strategy to be a third power supply strategy, wherein the third power supply strategy is a rule that the battery utilizes the first diode to power the vehicle.

[0012] According to another aspect of an embodiment of the present invention, a device for determining a vehicle power supply strategy is provided. The device may include: an acquisition unit configured to acquire hardware attribute information of a switch to be tested; a determination unit configured to determine a test topology for the switch based on the hardware attribute information, wherein the test topology indicates the topology used by the switch corresponding to the hardware attribute information during performance testing; and a testing unit configured to test the switch based on the test topology and obtain a test result, wherein the test result indicates the performance of the switch.

[0013] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is also provided, which includes a stored program, wherein when the program is run by a processor, the device where the storage medium is located is controlled to execute the method for determining the power supply strategy of the vehicle in an embodiment of the present invention.

[0014] According to another aspect of an embodiment of the present invention, a processor is provided, which is configured to run a program, wherein when the program is run, the method for determining a vehicle power supply strategy according to an embodiment of the present invention is executed.

[0015] According to another aspect of an embodiment of the present invention, a vehicle is provided, which is used to execute the method for determining a vehicle power supply strategy according to an embodiment of the present invention.

[0016] In an embodiment of the present invention, voltage data of a battery in a vehicle is obtained; based on the voltage data, a power supply status of the battery to the vehicle is determined; in response to the power supply status being an abnormal power supply status, the voltage data is compared with different voltage data thresholds to obtain different comparison results, wherein the comparison results are used to represent the relationship between the corresponding voltage data thresholds and the voltage data; based on the different comparison results, a power supply strategy for the vehicle is determined, wherein the power supply strategy is used to indicate the rules for the battery to supply power to the vehicle. That is, in an embodiment of the present invention, by obtaining voltage data of a battery in a vehicle, the power supply status of the battery to the vehicle is determined based on the voltage data; when the power supply status is an abnormal power supply status, the voltage data is compared with different preset voltage data thresholds to obtain comparison results, and then the corresponding power supply strategy is determined based on the different comparison results. Since the present invention can directly determine different power supply strategies based on the comparison results, it avoids the high cost of directly introducing a high-voltage backup power supply system to supplement the low-voltage power supply shortage, thereby solving the technical problem of high protection cost of the low-voltage power supply system in the event of a voltage drop, and achieving the technical effect of reducing the protection cost of the low-voltage power supply system in the event of a voltage drop. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 is a flow chart of a method for determining a power supply strategy for a vehicle according to an embodiment of the present invention;

[0019] Figure 2 1 is a schematic diagram of a power backup circuit for protecting a switching power supply chip to ensure stable operation when a low-voltage power supply drops according to an embodiment of the present invention;

[0020] Figure 3 is a schematic diagram of a device for determining a power supply strategy for a vehicle according to an embodiment of the present invention;

[0021] Figure 4 is a schematic diagram of a vehicle according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions 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 embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0023] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, functional component or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, functional components or devices.

[0024] According to an embodiment of the present invention, an embodiment of a method for determining a power supply strategy for a vehicle is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0025] Figure 1 FIG. 1 is a flow chart of a method for determining a vehicle power supply strategy according to an embodiment of the present invention. Figure 1 As shown, the method may include the following steps:

[0026] Step S101, obtaining voltage data of the battery in the vehicle.

[0027] In the technical solution provided in the above step S101 of the present invention, the battery can also be referred to as a terminal or line (Klemme, abbreviated as KL30) connected to the positive electrode of the battery.

[0028] In this embodiment, the voltage data of the battery in the vehicle is obtained, for example, by using a dedicated voltage detection chip to obtain the battery voltage. This is only an illustrative example and does not limit the specific method of obtaining the voltage data of the battery in the vehicle.

[0029] Optionally, by monitoring battery voltage data, the frequency, magnitude, and duration of battery voltage dips can be determined. This information is crucial for designing a power backup circuit that can effectively handle voltage dips while maintaining a low cost.

[0030] Step S102: determining the battery power supply status of the vehicle based on the voltage data.

[0031] In the technical solution provided in the above step S102 of the present invention, the power supply state may also be referred to as a drop state, and the power supply state may at least include a normal power supply state and an abnormal power supply state.

[0032] In this embodiment, after the voltage data of the battery in the vehicle is obtained in step S101, the power supply status of the battery to the vehicle is determined by processing the voltage data. For example, the voltage data is compared with the driving voltage to determine the power supply status of the battery to the vehicle. This is only an illustrative example and does not limit the specific method of determining the power supply status of the battery to the vehicle.

[0033] For example, assuming the normal driving voltage is 12V, the KL30 voltage is 10V at this time. Since 10V<12V, that is, the KL30 voltage is less than the driving voltage, based on this, it can be determined that the battery power supply status to the vehicle is abnormal.

[0034] Optionally, by monitoring the battery voltage in real time and understanding its voltage drop status, the capacity and response time of the backup power system can be accurately calculated and planned, avoiding resource waste and unnecessary cost increases caused by over-design.

[0035] Step S103 : in response to the power supply state being an abnormal power supply state, the voltage data is compared with different voltage data thresholds to obtain different comparison results.

[0036] In the technical solution provided in the above step S103 of the present invention, the comparison result is used to represent the relationship between the corresponding voltage data threshold and the voltage data.

[0037] In this embodiment, after determining the power supply status of the battery to the vehicle in step S102, when the power supply status is an abnormal power supply status, the voltage data is compared with different voltage data thresholds to obtain different comparison results. For example, the comparison result is determined by comparing the voltage data with a dropped voltage data threshold. This is only an illustrative example and does not limit the specific method of comparing the voltage data with different voltage data thresholds to obtain different comparison results.

[0038] Optionally, different comparison results can guide the system to dynamically adjust the activation of the backup power source. For example, when the voltage dip just reaches the first threshold, the system can simply increase the capacitor charging rate, and only switch to the auxiliary power source when the voltage dip reaches a second, lower threshold. This layered protection strategy can ensure stable system operation while reducing the frequent use of the backup power source, saving energy and lowering maintenance costs.

[0039] Step S104: determining a power supply strategy for the vehicle based on different comparison results.

[0040] In the technical solution provided in the above step S104 of the present invention, the power supply strategy is used to indicate the rules for the battery to supply power to the vehicle.

[0041] In this embodiment, after different comparison results are determined in step S103, the power supply strategy of the vehicle is determined according to the different comparison results. For example, when the comparison result is that the voltage data is less than 4V, the power supply strategy is determined to be the first power supply strategy. This is only an illustrative example and does not limit the specific method of determining the power supply strategy of the vehicle.

[0042] For example, when KL30 fluctuates abnormally and drops to 4V, that is, when the comparison result shows that the voltage data is less than 4V, the auxiliary power supply (AUX) voltage is greater than KL30. The switching power pin voltage is provided by AUX through diode D3 to ensure that the driving voltage of the Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) will not be unable to fully turn on due to KL30 dropping to 4V, thereby increasing switching losses and causing voltage drops and system failures.

[0043] Optionally, by adjusting the power supply strategy, the burden on the battery can be reduced when the voltage drops, avoiding overload or deep discharge, thereby extending the battery life. This indirectly reduces the frequency and cost of battery replacement, which is particularly important for vehicles with long-term operation.

[0044] It should be noted that the above embodiment can be executed by a device for determining a power supply strategy of a vehicle.

[0045] In the above steps S101 to S104 of the present invention, voltage data of the battery in the vehicle is obtained; based on the voltage data, the battery power supply status to the vehicle is determined; in response to the power supply status being an abnormal power supply status, the voltage data is compared with different voltage data thresholds to obtain different comparison results, wherein the comparison results are used to represent the relationship between the corresponding voltage data thresholds and the voltage data; based on the different comparison results, a power supply strategy for the vehicle is determined, wherein the power supply strategy is used to indicate the rules for the battery to supply power to the vehicle. That is, in an embodiment of the present invention, by obtaining voltage data of the battery in the vehicle, the battery power supply status to the vehicle is determined based on the voltage data; when the power supply status is an abnormal power supply status, the voltage data is compared with different preset voltage data thresholds to obtain comparison results, and then the corresponding power supply strategy is determined based on the different comparison results. Since the present invention can directly determine different power supply strategies based on the comparison results, it avoids the high cost of directly introducing a high-voltage backup power supply system to supplement the low-voltage power supply shortage, thereby solving the technical problem of high protection cost of the low-voltage power supply system in the event of a voltage drop, and achieving the technical effect of reducing the protection cost of the low-voltage power supply system in the event of a voltage drop.

[0046] The above method of this embodiment is further introduced below.

[0047] As an optional embodiment, based on the voltage data, the power supply status of the battery to the vehicle is determined, including: comparing the voltage data with a first voltage data threshold to obtain a first comparison result, wherein the first comparison result is the magnitude relationship between the voltage data and the first voltage data threshold; in response to the first comparison result that the voltage data is greater than or equal to the first voltage data threshold, determining that the power supply status is a normal power supply status; in response to the first comparison result that the voltage data is less than the first voltage data threshold, determining that the power supply status is an abnormal power supply status.

[0048] In this embodiment, the voltage data is compared with the first voltage data threshold to obtain a first comparison result. For example, the first voltage data threshold may be 12V. This is only an illustrative example and does not limit the specific value of the first voltage data threshold.

[0049] Optionally, when the first comparison result is that the voltage data is greater than or equal to the first voltage data threshold, it indicates that the KL30 is in normal power supply at this time. Based on this, it can be determined that the power supply state is the normal power supply state.

[0050] Optionally, when the first comparison result is that the voltage data is less than the first voltage data threshold, it indicates that the voltage of KL30 fluctuates abnormally and drops downward. Based on this, it can be determined that the power supply state is an abnormal power supply state.

[0051] Optionally, when the voltage data falls below a first threshold, the system immediately identifies the power supply as abnormal, enabling immediate protective measures such as activating a backup power source or adjusting the load. This rapid response helps mitigate the impact of a voltage dip, preventing the system from entering a more severe fault state and reducing overall repair and replacement costs.

[0052] As an optional embodiment, the voltage data threshold includes a second voltage data threshold and a third voltage data threshold. In response to the power supply state being an abnormal power supply state, the voltage data is compared with different voltage data thresholds to obtain different comparison results, including: in response to the power supply state being an abnormal power supply state, the voltage data is compared with the second voltage data threshold to obtain a second comparison result, wherein the second comparison result is a size relationship between the voltage data and the second voltage data threshold, and the second voltage threshold is less than the first voltage data threshold; in response to the second comparison result being that the voltage data is less than the second voltage data threshold, the voltage data is compared with the third voltage data threshold to obtain a third comparison result, wherein the third comparison result is a size relationship between the voltage data and the third voltage data threshold, and the third voltage threshold is less than the second voltage data threshold.

[0053] In this embodiment, when the power supply state is an abnormal power supply state, it is necessary to further determine the abnormal situation of KL30. Based on this, the voltage data is compared with the second voltage data threshold to obtain a second comparison result. For example, the second voltage data threshold can be 4V. This is only an illustrative example and does not limit the specific value of the second voltage data threshold.

[0054] Optionally, when the second comparison result is that the voltage data is less than the second voltage data threshold, it indicates that the KL30 voltage drop is abnormal. Based on this, the voltage data is compared with the third voltage data threshold to obtain a third comparison result. For example, the third voltage data threshold can be 3V. This is only an illustrative example and does not limit the specific values ​​of the three voltage data thresholds.

[0055] Optionally, the first, second, and third voltage thresholds can be set to allow the system to take different levels of response measures for varying voltage drops. This tiered strategy can more accurately determine the severity of a voltage drop, avoiding the initiation of costly protective measures for even minor voltage drops.

[0056] As an optional embodiment, based on different comparison results, the power supply strategy of the vehicle is determined, including: in response to the second comparison result that the voltage data is greater than or equal to the second voltage data threshold, determining the power supply strategy as the first power supply strategy, wherein the first power supply strategy is a rule that the battery uses the second diode to power the vehicle, and the second diode and the first diode are connected at different positions in the vehicle; in response to the third comparison result that the voltage data is less than the third voltage data threshold, determining the difference result, wherein the difference result is used to indicate the difference between different times of obtaining the voltage data; in response to the difference result being less than the difference threshold, determining the power supply strategy as the second power supply strategy, wherein the second power supply strategy is a rule that the battery uses the auxiliary power supply to power the vehicle.

[0057] In this embodiment, when the second comparison result is that the voltage data is greater than or equal to the second voltage data threshold, it indicates that KL30 fluctuates abnormally and falls, such as falling to 4V. At this time, the AUX voltage is greater than KL30. Based on this, the power supply strategy is determined to be the first power supply strategy.

[0058] For example, when KL30 fluctuates abnormally and drops to 4V, the AUX voltage is greater than KL30. The first power supply strategy is determined as the switching power pin voltage is provided by AUX through diode D3. This ensures that the driving voltage of MOSFET Q1 will not be unable to fully turn on due to KL30 dropping to 4V, increasing switching losses and causing the output voltage corresponding to diode D2 and diode D5 to drop, resulting in system failure.

[0059] Optionally, when the third comparison result is that the voltage data is less than the third voltage data threshold, it indicates that KL30 has abnormally fluctuated and fallen, such as falling to 3V. Based on this, the difference result is determined, that is, the time when KL30 falls to the third voltage data threshold is determined.

[0060] Optionally, when the difference result is less than the difference threshold, it means that KL30 drops below 3V for a short time. If KL30 continues to supply power, the voltage does not meet the voltage operating range of the switching power supply chip U1, which will cause the switching power supply to shut down and cause system failure. Based on this, the power supply strategy is determined to be the second power supply strategy.

[0061] For example, if KL30 drops below 3V for a short time, that is, when the difference result is less than the difference threshold, if KL30 continues to supply power, the voltage will not meet the voltage operating range of the switching power supply chip U1, which will cause the switching power supply to shut down and lead to system failure. Determining the second power supply strategy to add the backup circuit will resolve the anomaly and improve system robustness.

[0062] Optionally, by comparing graded voltage data thresholds and analyzing the difference results, different power supply strategies can be determined to achieve the best balance between cost control and power supply stability, ensuring that the low-voltage power supply system can respond quickly when the voltage drops and maintain the normal operation of the vehicle at the lowest cost. This is crucial to improving the economic benefits and operational reliability of electric vehicles and other intelligent vehicles.

[0063] As an optional embodiment, in response to the third comparison result being that the voltage data is less than the third voltage data threshold, a difference result is determined, including: obtaining the voltage data of the vehicle battery at a first moment and the power supply state being an abnormal power supply state at a second moment; performing a difference operation between the first moment and the second moment to obtain a difference result.

[0064] In this embodiment, the first moment when the voltage data of the vehicle battery is obtained and the second moment when the power supply state is an abnormal power supply state are obtained; the first moment and the second moment are differenced to obtain a difference result, that is, to determine the time when KL30 drops to the third voltage data threshold.

[0065] Optionally, knowing the time difference of the voltage drop, the system can initiate pre-charging of the auxiliary power supply at the appropriate time, ensuring that the auxiliary power supply can be put into use immediately when needed without incurring additional costs or performance degradation due to insufficient charging.

[0066] As an optional embodiment, a method for determining a vehicle's power supply strategy includes: in response to the power supply state being a normal power supply state, determining the power supply strategy to be a third power supply strategy, wherein the third power supply strategy is a rule that the battery utilizes a first diode to power the vehicle.

[0067] In this embodiment, when the power supply state is the normal power supply state, it indicates that the power supply of KL30 is normal. Based on this, the power supply strategy is determined to be the third power supply strategy.

[0068] For example, when KL30 is powered normally, that is, when the supply voltage of KL30 is 12V or above, since the auxiliary winding voltage is 11.5V, which is lower than the driving voltage of 12V, the third power supply strategy is determined as follows: the power supply input pin (Voltage Common Collector, referred to as VCC) of the switching power supply U1 is powered by KL30 through the diode D4, and the drive pin (Drive, referred to as DRV) voltage works normally.

[0069] Optionally, under normal power supply conditions, the system does not need to frequently switch to backup power or perform complex power management operations, which reduces wear and tear on switches, circuit boards and other equipment, extends the service life of the equipment, and reduces long-term operation and maintenance costs.

[0070] It should be noted that the above embodiment can be executed by a device for determining a power supply strategy of a vehicle.

[0071] In this embodiment, voltage data of a battery in a vehicle is obtained; based on the voltage data, the battery's power supply status to the vehicle is determined; in response to the power supply status being an abnormal power supply status, the voltage data is compared with different voltage data thresholds to obtain different comparison results, wherein the comparison results are used to represent the relationship between the corresponding voltage data thresholds and the voltage data; based on the different comparison results, a power supply strategy for the vehicle is determined, wherein the power supply strategy is used to indicate the rules for the battery to supply power to the vehicle. That is, in an embodiment of the present invention, by obtaining voltage data of a battery in a vehicle, the battery's power supply status to the vehicle is determined based on the voltage data; when the power supply status is an abnormal power supply status, the voltage data is compared with different preset voltage data thresholds to obtain comparison results, and then the corresponding power supply strategy is determined based on the different comparison results. Since the present invention can directly determine different power supply strategies based on the comparison results, it avoids the high cost of directly introducing a high-voltage backup power supply system to supplement the low-voltage power supply shortage, thereby solving the technical problem of high protection cost of the low-voltage power supply system in the event of a voltage drop, and achieving the technical effect of reducing the protection cost of the low-voltage power supply system in the event of a voltage drop.

[0072] The technical solutions of the embodiments of the present invention are described below with reference to preferred implementation methods.

[0073] At present, in the field of electric vehicles and smart vehicles, as the degree of vehicle intelligence continues to improve, the number of electronic devices carried by low-voltage power supply systems (such as small batteries) is increasing day by day. The power demand characteristics of these devices vary. Some devices lack soft start functions, while some devices operate in intermittent mode. Due to the constraints of the internal space layout of the vehicle, the transient response capabilities of small batteries or DC-to-DC converters are often limited and cannot fully meet the voltage requirements when the vehicle starts or when large-load equipment suddenly starts. This causes the low-voltage power supply system to be prone to voltage drops during the startup process or at the moment of large-load startup, which in turn has a negative impact on the normal operation of the switching power supply chips or circuits that directly rely on the low-voltage power supply, and may even cause system failures, affecting the safety of vehicle operation.

[0074] In the related art, some vehicle manufacturers have attempted to introduce high-voltage backup power systems to supplement low-voltage power supplies. However, this often comes with high costs, complex circuit designs, and additional board space requirements, reducing overall design efficiency and cost-effectiveness. High-voltage backup solutions are particularly cost-effective in non-functional safety vehicle applications. Other solutions focus on rigidly protecting against voltage sags by adding power input capacitors and reverse-phase circuitry. However, this approach is insufficient for deep voltage sags or prolonged brownouts. Providing sufficient voltage support often requires connecting a large number of high-capacity electrolytic capacitors in parallel, which not only increases the inrush current during power-up but also significantly increases cost and board space, contradicting the lightweight and space-optimized design principles of modern vehicles. Consequently, the cost of protecting low-voltage power systems from voltage sags remains prohibitive. Currently, no effective solution has been proposed to the high cost of protecting low-voltage power systems from voltage sags.

[0075] However, an embodiment of the present invention proposes a power backup circuit for protecting a switching power supply chip to ensure stable operation when a low-voltage power supply drops. The switching power supply chip U1 is backed up by the voltage of the auxiliary winding AUX of the switching power supply through the diode D3 and KL30 through D4. When the KL30 voltage drops below the AUX voltage due to an external load or other abnormal conditions, the power supply VCC of the power chip U1 is provided by AUX. Because AUX can meet the gate voltage of the MOSFET Q1 to be fully turned on, the MOSFET can maintain high-efficiency operation and maintain normal system operation, thereby solving the technical problem of excessively high protection cost of the low-voltage power supply system in the event of a voltage drop, and achieving the technical effect of reducing the protection cost of the low-voltage power supply system in the event of a voltage drop.

[0076] The following is a further introduction to the embodiments of the present invention.

[0077] Figure 2 FIG. 1 is a schematic diagram of a power backup circuit for protecting a switching power supply chip to ensure stable operation when a low-voltage power supply drops according to an embodiment of the present invention. Figure 2 As shown, the power backup circuit includes: a switching power supply chip U1, a diode D3, a diode D4, etc.

[0078] The switching power supply chip U1 has a DRV pin for driving the MOSFET Q1.

[0079] The auxiliary winding AUX is used to provide a stable voltage that is higher than the minimum operating voltage of the switching power supply chip U1.

[0080] Diode D3 is used to switch the AUX voltage to the VCC pin of U1 when the KL30 voltage is lower than the AUX voltage.

[0081] Diode D4 is used to switch the KL30 voltage to the VCC pin of U1 when the KL30 voltage is higher than or equal to the AUX voltage.

[0082] In this embodiment, KL30 replaces the vehicle's small battery input, and C4 and C5 serve as energy storage capacitors to provide energy input for the switching power supply, with one end connected to KL30 and the other end connected to ground (GND).

[0083] Alternatively, Schottky diodes, with their low on-state voltage and fast switching characteristics, significantly reduce energy loss during power switching, improving overall circuit efficiency. For example, in electric vehicle charging management systems, efficient power switching is crucial for extending battery life and improving charging efficiency. Using Schottky diodes D3 and D4 maintains high circuit efficiency even in environments with frequent power fluctuations, reducing energy waste and extending battery life. This technical solution addresses the significant energy loss during power switching.

[0084] Optionally, energy storage capacitor C8 can quickly release stored energy when the main power supply KL30 voltage drops, providing temporary power to U1 and avoiding system interruptions caused by momentary voltage drops. This feature enhances the system's robustness in the face of power supply fluctuations by providing a voltage buffer. For example, in industrial automation control equipment, sudden power fluctuations may cause the equipment to stop operating. The introduction of C8 ensures that the switching power supply chip can maintain normal operation even during voltage drops, thus avoiding unplanned equipment downtime. This technical solution solves the technical problem of unstable operation of switching power supply chips in power fluctuation environments.

[0085] Optionally, one end of the primary winding of the transformer is connected to KL30, and the other end is connected to the drain of the MOSFET Q1 and the anode of the diode D6.

[0086] Optionally, one end of C6, R1, and R2 is connected to KL30, and one end is connected to the cathode of diode D6.

[0087] Optionally, C6, R1, R2, and D6 together form an RCD absorption circuit to absorb the reverse peak generated by turning off the MOSFET Q1, thereby preventing Q1 from being damaged due to overvoltage.

[0088] Optionally, R3 is the gate drive resistor of Q1, with the left end connected to the DRV pin of the switching power supply chip U1 and the right end connected to the gate of the MOSFET Q1, thereby playing a current limiting role.

[0089] Optionally, this feature automatically adjusts the DRV pin drive voltage, enabling MOSFET Q1 to maintain optimal switching performance under various power supply conditions, thereby improving overall circuit efficiency and stability. For example, in a mobile device's power management system, where power supply conditions may vary depending on the device's usage scenario, the DRV pin's automatic adjustment mechanism ensures that MOSFET Q1 operates efficiently in all conditions, avoiding efficiency degradation or overheating caused by drive voltage mismatch. This technical solution addresses the issue of reduced MOSFET operating efficiency when power supply conditions vary.

[0090] Optionally, R4 is a current-sense resistor for the switching power supply, one end of which is connected to the source of MOSFET Q1 and the CS pin (current detection pin) of the switching power supply chip U1, and the other end is connected to GND. C9 is a filter capacitor connected in parallel across R4.

[0091] Optionally, D2 is a rectifier diode corresponding to the VOUT1 output voltage of the secondary winding 1 of the transformer, one end of which is connected to one end of the secondary winding 1 of the transformer, and the other end is connected to the VOUT1 output and one end of the energy storage capacitor C3. The other end of the secondary winding 1 is connected to the other end of the C3 capacitor and to the corresponding ground GND1.

[0092] Optionally, D5 is a rectifier diode corresponding to the VOUT2 output voltage of the secondary winding 2 of the transformer, one end of which is connected to one end of the secondary winding 2 of the transformer, and the other end is connected to the VOUT2 output and one end of the energy storage capacitor C7. The other end of the secondary winding 2 is connected to the other end of the C7 capacitor and to the corresponding ground GND2.

[0093] Optionally, D1 is a rectifier diode corresponding to the AUX output voltage of the transformer auxiliary winding, one end of which is connected to one end of the transformer auxiliary winding, and the other end is connected to the AUX output and one end of the energy storage capacitors C1 and C2. The other end of the auxiliary winding is connected to the other end of the C1 and C2 capacitors, and is also connected to the corresponding ground GND.

[0094] Optionally, the voltage of the auxiliary winding AUX is set to be higher than the minimum operating voltage of the switching power supply chip U1, for example 11.5V. This setting ensures that even when the main power supply voltage drops to an extremely low level, U1 can still obtain sufficient voltage to maintain its normal operation, thereby avoiding system shutdown due to insufficient voltage.

[0095] Optionally, R5 and R6 are feedback voltage divider resistors, which provide closed-loop feedback for the switching power supply system to ensure the stability of the output voltages of VOUT1 and VOUT2. The upper end of R5 is connected to the feedback voltage AUX, the lower end is connected to the upper end of R6 and the FB pin of the switching power supply U1, and the lower end of R6 is connected to GND.

[0096] Optionally, feedback voltage divider resistors R5 and R6 adjust the feedback voltage, enabling the switching power supply chip U1 to precisely control the output voltages VOUT1 and VOUT2, maintaining output voltage stability even under power fluctuations or load variations. For example, in a data center's power management system, precise voltage control is crucial for stable server operation. The use of R5 and R6 ensures that the output voltage remains within a preset range even during power fluctuations, preventing server failures caused by voltage instability. This technical solution addresses the issue of inaccurate output voltage control in complex power supply environments.

[0097] Optionally, D3 and D4 form a power backup circuit, the upper end of D3 is connected to the feedback voltage AUX (11.5V), the anode of D4 is connected to KL30 (the normal operating voltage is 12V, the voltage fluctuates and may drop below 3V), the cathodes of D3 and D4 are connected to one end of capacitor C8 and the power supply pin VCC of the switching power supply U1. C8 is a storage capacitor that provides energy for the normal operation of the switching power supply. At the same time, the DRV pin drive voltage changes with the supply voltage of the VCC pin.

[0098] Optionally, when KL30 is powered normally, that is, when the KL30 supply voltage is 12V or above, since the auxiliary winding voltage is 11.5V, which is lower than the driving voltage 12V, the switching power supply U1 VCC is powered by KL30 through diode D4, and the DRV pin voltage works normally.

[0099] Optionally, when KL30 fluctuates abnormally and drops, for example, to 4V, the AUX voltage is greater than KL30, and the VCC pin voltage of the switching power supply U1 is provided by AUX through D3, ensuring that the driving voltage of the MOSFET Q1 will not fail to fully turn on due to KL30 dropping to 4V, thereby increasing switching losses and causing the VOUT1 and VOUT2 voltages to drop, resulting in system failure.

[0100] Optionally, if KL30 drops below 3V for a short time, the voltage will not meet the voltage operating range of the switching power supply chip U1 if it continues to be powered by KL30, which will cause the switching power supply to shut down and lead to system failure. Adding this backup circuit will solve the anomaly and improve system robustness.

[0101] Optionally, when the main power supply KL30 is operating normally, the gate drive voltage for MOSFET Q1 is directly provided by D4. When the KL30 voltage drops, it is switched to D3 and the auxiliary winding AUX voltage. This intelligent switching mechanism ensures that the gate drive voltage of MOSFET Q1 remains stable under any circumstances, enhancing the robustness and reliability of the system.

[0102] Alternatively, the minimum startup voltage for switching power supply chips currently available on the market is around 3V. The voltage driven by MOSFET Q1 through the DRV pin of switching power supply chip U1 varies with the voltage on the VCC pin of switching power supply U1. A common power supply topology uses a small battery voltage, KL30, to directly power power supply chip U1 or other chips. When the KL30 voltage drops, the supply voltage on U1's VCC pin also drops, causing the drive voltage on the DRV pin to drop, which in turn reduces the voltage driving MOSFET Q1. The MOSFET gate drive voltage determines the MOSFET's on-resistance. As the gate drive voltage decreases, the MOSFET's on-resistance increases, reducing the overall efficiency of the switching power supply and making it impossible to ensure that the output voltages VOUT1 and VOUT2 meet the output requirements, causing the system to report an error. If the KL30 voltage temporarily drops below the minimum operating voltage of switching power supply chip U1 (typically 3V), the switching power supply will stop operating because the operating voltage does not meet the chip's normal operating requirements, and the entire system will report a fault.

[0103] Optionally, the present invention utilizes the auxiliary winding AUX voltage of the switching power supply (the auxiliary winding voltage AUX is generally designed to be the MOSFET fully-on voltage, much greater than 3V) through the diode D3 and KL30 through D4 to realize backup power supply for the switching power supply chip U1. When the KL30 voltage drops below the AUX voltage due to external load or other abnormal conditions, the power supply VCC of the power chip U1 is provided by AUX. Because AUX can meet the gate voltage of the MOSFET Q1 to be fully turned on, the MOSFETFE can maintain high efficiency and maintain normal operation of the system. The present invention can also be simultaneously applied to other chips that are directly powered by small batteries to avoid chip fault reporting.

[0104] In this embodiment, the present invention proposes a power backup circuit for protecting a switching power supply chip to ensure stable operation when a low-voltage power supply drops. The switching power supply chip U1 is backed up by the voltage of the auxiliary winding AUX of the switching power supply through the diode D3 and KL30 through D4. When the KL30 voltage drops below the AUX voltage due to an external load or other abnormal conditions, the power supply VCC of the power chip U1 is provided by AUX. Because AUX can meet the gate voltage of the MOSFET Q1 to be fully turned on, the MOSFET can maintain high-efficiency operation and maintain normal system operation, thereby solving the technical problem of excessively high protection cost of the low-voltage power supply system in the event of a voltage drop, and achieving the technical effect of reducing the protection cost of the low-voltage power supply system in the event of a voltage drop.

[0105] According to an embodiment of the present invention, a device for determining a vehicle power supply strategy is also provided. It should be noted that the device for determining a vehicle power supply strategy can be used to execute the method for determining a vehicle power supply strategy in the method embodiment.

[0106] Figure 3 is a schematic diagram of a determination apparatus of a power supply strategy of a vehicle according to an embodiment of the present application. As shown in the figure, the determination apparatus 300 of the power supply strategy of the vehicle can include an acquisition unit 301, a first determination unit 302, a comparison unit 304 and a second determination unit 303. Figure 3

[0107] The acquisition unit 301 is configured to acquire voltage data of a vehicle storage battery.

[0108] The first determination unit 302 is configured to determine a power supply state of the storage battery to the vehicle based on the voltage data.

[0109] The comparison unit 304 is configured to, in response to the power supply state being an abnormal power supply state, compare the voltage data with different voltage data thresholds respectively to obtain different comparison results, wherein the comparison results are used to represent the relationship between the corresponding voltage data threshold and the voltage data.

[0110] The second determination unit 303 is configured to determine a power supply strategy of the vehicle based on the different comparison results, wherein the power supply strategy is used to indicate the rule of the storage battery supplying power to the vehicle.

[0111] Optionally, the first determination unit 302 can include a first comparison module configured to compare the voltage data with a first voltage data threshold to obtain a first comparison result, wherein the first comparison result is the size relationship between the voltage data and the first voltage data threshold; a first determination module configured to, in response to the first comparison result being that the voltage data is greater than or equal to the first voltage data threshold, determine that the power supply state is a normal power supply state; and a second comparison module configured to, in response to the first comparison result being that the voltage data is less than the first voltage data threshold, determine that the power supply state is an abnormal power supply state.

[0112] Optionally, the comparison unit 304 can include a second comparison module configured to, in response to the power supply state being an abnormal power supply state, compare the voltage data with a second voltage data threshold to obtain a second comparison result, wherein the second comparison result is the size relationship between the voltage data and the second voltage data threshold, and the second voltage threshold is less than the first voltage data threshold; and a third comparison module configured to, in response to the second comparison result being that the voltage data is less than the second voltage data threshold, compare the voltage data with a third voltage data threshold to obtain a third comparison result, wherein the third comparison result is the size relationship between the voltage data and the third voltage data threshold, and the third voltage threshold is less than the second voltage data threshold.

[0113] ​Optionally, the second determining unit 303 can comprise: a second determining module, configured to determine the power supply strategy as the first power supply strategy in response to the second comparison result being that the voltage data is greater than or equal to the second voltage data threshold, wherein the first power supply strategy is a rule in which the battery supplies power to the vehicle using a second diode, the second diode and the first diode being connected at different positions in the vehicle; a third determining module, configured to determine the difference result in response to the third comparison result being that the voltage data is less than the third voltage data threshold, wherein the difference result is used to indicate a difference between different time instants at which the voltage data is acquired; and a fourth determining module, configured to determine the power supply strategy as the second power supply strategy in response to the difference result being less than a difference threshold, wherein the second power supply strategy is a rule in which the battery supplies power to the vehicle using an auxiliary power supply.

[0114] Optionally, the third determining module can comprise: an acquisition module, configured to acquire a first time instant at which voltage data of a battery of the vehicle is acquired, and a second time instant at which the power supply state is the abnormal power supply state; and an operation module, configured to perform a difference operation on the first time instant and the second time instant to obtain the difference result.

[0115] Optionally, the determination apparatus 300 of the power supply strategy of the vehicle can further comprise a third determining unit, configured to determine the power supply strategy as a third power supply strategy in response to the power supply state being the normal power supply state, wherein the third power supply strategy is a rule in which the battery supplies power to the vehicle using the first diode.

[0116] In this embodiment, voltage data of a battery in a vehicle is acquired, the power supply state of the battery to the vehicle is determined based on the voltage data, the voltage data is compared with different voltage data thresholds respectively to obtain different comparison results in response to the power supply state being an abnormal power supply state, wherein the comparison result is used to indicate a relationship between the corresponding voltage data threshold and the voltage data, and the power supply strategy of the vehicle is determined based on the different comparison results, wherein the power supply strategy is used to indicate a rule in which the battery supplies power to the vehicle. That is, in the embodiment of the application, the voltage data of the battery in the vehicle is acquired, the power supply state of the battery to the vehicle is determined based on the voltage data, the voltage data is compared with different voltage data thresholds respectively to obtain comparison results in response to the power supply state being an abnormal power supply state, and the corresponding power supply strategy is determined based on the different comparison results. Since the application can directly determine different power supply strategies through comparison results, the cost of directly introducing a high-voltage backup power supply system to supplement the deficiency of a low-voltage power supply system is avoided, thereby solving the technical problem of high protection cost of a low-voltage power supply system under a voltage drop condition, and achieving the technical effect of reducing the protection cost of a low-voltage power supply system under a voltage drop condition.

[0117] According to the embodiment of the application, a computer readable storage medium is further provided, the storage medium comprising a stored program, wherein the program performs the determination method of the power supply strategy of the vehicle in the method embodiment.

[0118] The computer readable storage medium can also be directly or indirectly coupled with the processor, and can transmit, receive, or share data directly or indirectly with the processor.

[0119] The program code contained in the computer readable storage medium can be transmitted, propagated, or transferred in a suitable medium, either optically, acoustically, or electrically, magnetically, mechanically, or a combination thereof, for use by, or in connection with, an instruction execution system, apparatus, or device.

[0120] According to the embodiments of the present application, a processor is further provided, which is used for running a program, wherein the program is used for implementing the method for determining the power supply strategy of the vehicle.

[0121] The embodiments of the present application further provide a vehicle. Figure 4 is a schematic diagram of a vehicle according to the embodiments of the present application, as Figure 4 shown in the figure, the vehicle 400 can include a memory 410 and a processor 420, wherein the memory 410 is used for storing a computer program; the processor 420 is used for running the program stored in the memory 410, and implements the method for determining the power supply strategy of the vehicle. The above-mentioned serial numbers of the embodiments of the present application are only for description, and do not represent the advantages and disadvantages of the embodiments.

[0122] In the present application, multiple means two or more than two.

[0123] In the present application, unless otherwise explicitly limited, the terms "mount", "connect", "connect" should be understood broadly, for example, it can be fixed connection, but also can be detachable connection, or integrally connected; it can be mechanical connection, but also can be electrical connection; it can be directly connected, but also through the intermediate medium indirectly connected, can be two elements inside the communication. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0124] The terms "first", "second", "third", "fourth" and the like (if any) in the present application are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence.

[0125] The term "and / or" in this application simply describes an association between related objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0126] Unless otherwise specified, all steps of the present application may be performed sequentially or randomly. For example, the method for determining the power supply strategy of a vehicle of the present application may include step S101 and step S102, which means that the method for determining the power supply strategy of a vehicle of the present application may include steps S101 and S102 performed sequentially, or may include steps S102 and S101 performed sequentially.

[0127] For example, the method for determining the power supply strategy of the vehicle of the present application may further include step S103, indicating that step S103 may be added to the method in any order. For example, the method for determining the power supply strategy of the vehicle of the present application may include step S101, step S102 and step S103, or may include step S101, step S103 and step S102, or may include step S103, step S101 and step S102, etc. This is only an example for illustration and is not specifically limited.

[0128] According to an embodiment of the present invention, a computer program product is further provided. The computer program product includes a computer program. When the computer program is executed by a processor, the method for determining the power supply strategy of the vehicle in the embodiment is implemented.

[0129] According to an embodiment of the present invention, a computer program product is also provided, including a non-volatile computer-readable storage medium, the non-volatile computer-readable storage medium being used to store a computer program, and when the computer program is executed by a processor, the method for determining the power supply strategy of the vehicle in the embodiment is implemented.

[0130] According to an embodiment of the present invention, a computer program is further provided. When the computer program is executed by a processor, the method for determining the power supply strategy of the vehicle in the embodiment is implemented.

[0131] Optionally, the computer program implements the following program code when executed by the processor: obtaining voltage data of a battery in a vehicle; determining the power supply status of the battery to the vehicle based on the voltage data; in response to the power supply status being an abnormal power supply status, comparing the voltage data with different voltage data thresholds to obtain different comparison results, wherein the comparison results are used to represent the relationship between the corresponding voltage data threshold and the voltage data; based on the different comparison results, determining the power supply strategy of the vehicle, wherein the power supply strategy is used to indicate the rules for the battery to supply power to the vehicle.

[0132] In the above embodiments of the present invention, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0133] In the several embodiments provided by the present invention, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are merely illustrative. For example, the division of units can be a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, and can be electrical or other forms.

[0134] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple units. Some or all of the units may be selected to achieve the purpose of the present embodiment according to actual needs.

[0135] In addition, the functional units in the various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0136] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent functional component, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software functional component, which is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server or network device, etc.) to execute all or part of the steps of the various embodiments of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk.

[0137] The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for determining a vehicle power supply strategy, characterized in that: include: Get the voltage data of the battery in the vehicle; determining a power supply status of the battery to the vehicle based on the voltage data; In response to the power supply state being an abnormal power supply state, comparing the voltage data with different voltage data thresholds respectively to obtain different comparison results, wherein the comparison results are used to represent a relationship between the corresponding voltage data thresholds and the voltage data; Based on the different comparison results, a power supply strategy for the vehicle is determined, wherein the power supply strategy is used to indicate a rule for the battery to supply power to the vehicle.

2. The method according to claim 1, characterized in that Determining a power supply status of the vehicle provided by the battery based on the voltage data includes: Comparing the voltage data with a first voltage data threshold to obtain a first comparison result, wherein the first comparison result is a magnitude relationship between the voltage data and the first voltage data threshold; In response to the first comparison result being that the voltage data is greater than or equal to the first voltage data threshold, determining that the power supply state is a normal power supply state; In response to the first comparison result being that the voltage data is less than the first voltage data threshold, the power supply state is determined to be the abnormal power supply state.

3. The method according to claim 2, characterized in that The voltage data threshold includes a second voltage data threshold and a third voltage data threshold. In response to the power supply state being an abnormal power supply state, the voltage data is compared with different voltage data thresholds respectively to obtain different comparison results, including: In response to the power supply state being the abnormal power supply state, comparing the voltage data with a second voltage data threshold to obtain a second comparison result, wherein the second comparison result is a magnitude relationship between the voltage data and the second voltage data threshold, and the second voltage threshold is less than the first voltage data threshold; In response to the second comparison result being that the voltage data is less than the second voltage data threshold, the voltage data is compared with the third voltage data threshold to obtain a third comparison result, wherein the third comparison result is the magnitude relationship between the voltage data and the third voltage data threshold, and the third voltage threshold is less than the second voltage data threshold.

4. The method according to claim 3, characterized in that Determining a power supply strategy for the vehicle based on different comparison results includes: In response to a second comparison result indicating that the voltage data is greater than or equal to the second voltage data threshold, determining that the power supply strategy is a first power supply strategy, wherein the first power supply strategy is a rule in which the battery supplies power to the vehicle using a second diode, and the second diode and the first diode are connected at different positions in the vehicle; In response to the third comparison result being that the voltage data is less than the third voltage data threshold, determining a difference result, wherein the difference result is used to indicate a difference between different times at which the voltage data is obtained; In response to the difference result being less than a difference threshold, the power supply strategy is determined to be a second power supply strategy, wherein the second power supply strategy is a rule that the battery uses an auxiliary power supply to supply power to the vehicle.

5. The method according to claim 4, characterized in that In response to the third comparison result being that the voltage data is less than the third voltage data threshold, determining a difference result includes: a first moment of acquiring the voltage data of the vehicle battery and a second moment of the power supply state being the abnormal power supply state; Performing a difference operation on the first moment and the second moment to obtain the difference result.

6. The method according to any one of claims 1 to 5, characterized in that The method further comprises: In response to the power supply state being the normal power supply state, the power supply strategy is determined to be a third power supply strategy, wherein the third power supply strategy is a rule that the battery uses a first diode to supply power to the vehicle.

7. A device for determining a vehicle power supply strategy, characterized in that: include: An acquisition unit, used to acquire voltage data of the vehicle battery; a first determining unit, configured to determine a power supply status of the battery to the vehicle based on the voltage data; a comparing unit, configured to, in response to the power supply state being an abnormal power supply state, compare the voltage data with different voltage data thresholds respectively to obtain different comparison results, wherein the comparison results are used to represent a relationship between the corresponding voltage data thresholds and the voltage data; The second determining unit is configured to determine a power supply strategy for the vehicle based on different comparison results, wherein the power supply strategy is used to indicate a rule for the battery to supply power to the vehicle.

8. A computer-readable storage medium, characterized in that The computer-readable storage medium includes a stored program, wherein when the program is executed by a processor, the device where the storage medium is located is controlled to execute the method for determining the power supply strategy of the vehicle as described in any one of claims 1 to 6.

9. A processor, characterized in that: The processor is used to run a program, wherein when the program is run, the method for determining the power supply strategy of the vehicle as described in any one of claims 1 to 6 is executed.

10. A vehicle, characterized in that: include: a memory storing an executable program; A processor is used to run the program, wherein when the program is run, the method for determining the power supply strategy of the vehicle according to any one of claims 1 to 6 is executed.

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