Control method, control module, power supply circuit, device, medium and chip system

Abstract

This application provides a control method, control module, power supply circuit, device, medium, and chip system, applicable to the field of terminal technology. When the power conversion module is off, the electrical parameters of the second power module are acquired. Based on the electrical parameters of the second power module, the auxiliary power supply in the power conversion module is controlled to turn on. This allows the auxiliary power supply to be turned on in advance, shortening the startup time of the subsequent power conversion module and improving the rapid startup capability of the power conversion module.

Description

Control methods, control modules, power supply circuits, equipment, media, and chip systems Technical Field

[0001] This application relates to the field of electronic technology, and more specifically, to control methods, control modules, power supply circuits, devices, media, and chip systems. Background Technology

[0002] New energy vehicles, drones, and other equipment typically incorporate at least two types of battery modules: high-voltage battery modules and low-voltage battery modules. High-voltage battery modules provide power to components with high voltage requirements, such as motors, air conditioning systems, and electric heaters; low-voltage battery modules provide power to components with lower voltage requirements, such as headlights, audio systems, window motors, and door locks.

[0003] Currently, vehicles can transfer energy from the high-voltage battery module to the low-voltage battery module via a DC-DC converter.

[0004] However, DC-DC converters have high energy losses. Summary of the Invention

[0005] This application provides a control method, control module, power supply circuit, device, medium, and chip system, which helps to reduce the power conversion module's on-time and reduce energy loss.

[0006] In a first aspect, this application provides a power supply method. The power supply method includes: acquiring electrical parameters of a second power module when the power conversion module is off; and controlling the auxiliary power supply in the power conversion module to turn on based on the electrical parameters of the second power module.

[0007] The electrical parameters of the second power module can be referred to the corresponding description in the control module section of Figure 3 below, and will not be elaborated further here. For example, taking a DC-DC controller as the control module, the DC-DC controller can obtain the electrical parameters of the second power module from the BMS via VDC. Alternatively, taking a chip integrating a DC-DC controller and a BMS as the control module, this chip can monitor the output voltage, output current, etc., of the second power module to obtain its electrical parameters.

[0008] This allows the auxiliary power supply to be turned on in advance, shortening the startup time of the subsequent power conversion module and improving the rapid startup capability of the power conversion module.

[0009] In one possible implementation, controlling the auxiliary power supply in the power conversion module to turn on according to the electrical parameters of the second power module includes: controlling the auxiliary power supply in the power conversion module to turn on when the electrical parameters of the second power module meet a first preset condition; wherein the first preset condition is used to indicate that the second power module does not meet the power supply requirements of the power consumption module after a first period of time.

[0010] The first preset condition can correspond to preset condition A in the following text, and is not specifically limited here.

[0011] In this way, the power supply situation after the first duration can be predicted based on the electrical parameters of the second power module. When it is predicted that the second power module is insufficient to supply power to the power consumption module, the auxiliary power supply in the control power conversion module 302 is turned on in advance, shortening the subsequent start-up time of the power conversion module 302 and improving the rapid start-up capability of the power conversion module 302.

[0012] In one possible implementation, the first preset condition includes: the first voltage prediction value is less than or equal to the first voltage preset value, wherein the first voltage prediction value is a voltage value obtained by predicting the output voltage of the second power module for a first duration after the current moment based on the electrical parameters of the second power module.

[0013] In this way, the power supply status after the first time period can be determined by predicting the output voltage after the first time period.

[0014] In one possible implementation, the electrical parameters of the second power module include at least one of the following: the output voltage of the second power module, the output current of the second power module, and the output power of the second power module.

[0015] In one possible implementation, the method further includes: controlling the auxiliary power supply to shut down when the auxiliary power supply has been turned on for a preset time and the power conversion module has not been turned on.

[0016] In this way, after the auxiliary power supply has been on for a long time, the auxiliary power supply can be turned off to reduce its power consumption.

[0017] In one possible implementation, the method further includes: controlling the power conversion module to start when the electrical parameters of the second power module meet a second preset condition. The second preset condition indicates that the second power module does not meet the power supply requirements of the power-consuming module after a second duration. The second preset condition may correspond to preset condition B below.

[0018] This allows the power conversion module to be turned on in advance, reducing the likelihood of it not turning on when there is insufficient power later.

[0019] In one possible implementation, the second preset condition includes: the second voltage prediction value is less than or equal to the second voltage preset value; the second voltage prediction value is the voltage value obtained by predicting the output voltage of the second power module for a second duration after the current moment based on the electrical parameters of the second power module, and the second duration is less than the first duration.

[0020] In this way, the power supply status after the second time period can be determined by predicting the output voltage after the second time period.

[0021] Secondly, this application provides a power supply circuit, which includes: a first power supply module, a second power supply module, a power conversion module, and a control module; wherein, the power conversion module includes: an auxiliary power supply and a power circuit; the auxiliary power supply is used to supply power to the power circuit; the power circuit is used to adjust the output voltage of the first power supply module; when the power conversion module is turned off, the control module is used to acquire the electrical parameters of the second power supply module; the control module is also used to control the auxiliary power supply in the power conversion module to turn on according to the electrical parameters of the second power supply module.

[0022] In one possible implementation, the control module is specifically used to control the auxiliary power supply in the power conversion module to turn on when the electrical parameters of the second power module meet the first preset condition; wherein the first preset condition is used to indicate that the second power module does not meet the power supply requirements of the power consumption module after a first period of time.

[0023] In one possible implementation, the first preset condition includes: the first voltage prediction value is less than or equal to the first voltage preset value, wherein the first voltage prediction value is a voltage value obtained by predicting the output voltage of the second power module for a first duration after the current moment based on the electrical parameters of the second power module.

[0024] In one possible implementation, the electrical parameters of the second power module include at least one of the following: the output voltage of the second power module, the output current of the second power module, or the output power of the second power module.

[0025] In one possible implementation, if the auxiliary power supply has been turned on for a preset duration and the power conversion module has not been turned on, the control module is also used to control the auxiliary power supply to be turned off.

[0026] In one possible implementation, when the electrical parameters of the second power module meet the second preset condition, the control module is further used to control the power conversion module to turn on; wherein, the second preset condition is used to indicate that the second power module does not meet the power supply requirements of the power consumption module after a second duration, and the second duration is less than the first duration.

[0027] In one possible implementation, the second preset condition includes: the second voltage prediction value is less than or equal to the second voltage preset value; the second voltage prediction value is the voltage value obtained by predicting the output voltage of the second power module for a second duration after the current moment based on the electrical parameters of the second power module.

[0028] Thirdly, this application provides a control module, including a processor, which is configured to execute the methods in the first aspect and any possible implementation thereof.

[0029] The device may also include a memory for storing instructions and data. The memory is coupled to a processor, which, when executing the instructions stored in the memory, can implement the methods described in the foregoing aspects. The device may also include a communication interface for communicating with other devices; exemplaryly, the communication interface may be a transceiver, circuit, bus, module, or other type of communication interface.

[0030] Fourthly, this application provides a chip system including at least one processor for supporting the implementation of the functions involved in the first aspect and any possible implementation of the first aspect, such as receiving or processing data and / or information involved in the above methods.

[0031] In one possible design, the chip system also includes a memory for storing program instructions and data, which may be located inside or outside the processor.

[0032] The chip system can consist of chips or include chips and other discrete components.

[0033] Fifthly, this application provides a computer-readable storage medium including a computer program that, when run on a computer, causes the computer to implement the methods of the first aspect and any possible implementation of the first aspect.

[0034] Sixthly, this application provides a computer program product comprising: a computer program (also referred to as code or instructions) that, when run, causes a computer to perform the methods of the first aspect and any possible implementation thereof.

[0035] In a seventh aspect, this application provides an apparatus. The apparatus can be a vehicle, a drone, etc. The apparatus includes a control module in the power supply circuit of the second aspect and any possible implementation of the second aspect.

[0036] It should be understood that the second to seventh aspects of this application correspond to the technical solutions of the first aspect of this application, and the beneficial effects achieved by each aspect and the corresponding feasible implementation are similar, and will not be repeated here. Attached Figure Description

[0037] Figure 1 is a structural schematic diagram of a vehicle provided in an embodiment of this application;

[0038] Figure 2 is a schematic diagram showing the relationship between the output power and energy conversion efficiency of the DC-DC converter provided in the embodiment of this application;

[0039] Figure 3 is a schematic diagram of a power supply circuit provided in an embodiment of this application;

[0040] Figure 4 is a schematic diagram of the power supply circuit of the power conversion module provided in the embodiment of this application under different working states;

[0041] Figure 5 is a schematic diagram of a linear function relationship provided in an embodiment of this application;

[0042] Figure 6 is a schematic diagram of an exponential function relationship provided in an embodiment of this application;

[0043] Figure 7 is a schematic diagram of an exponential function relationship provided in an embodiment of this application;

[0044] Figure 8 is a schematic diagram of a power supply circuit in a vehicle according to an embodiment of this application;

[0045] Figure 9 is a flowchart illustrating a control method provided in a practical example of this application. Detailed Implementation

[0046] To facilitate understanding, the relevant terms and concepts involved in the embodiments of this application will be introduced below:

[0047] 1. Energy conversion efficiency

[0048] Energy conversion efficiency can be expressed as the ability to convert input electrical energy into output electrical energy. For example, energy conversion efficiency can be the ratio between output power and input power.

[0049] Understandably, the energy conversion efficiency of a power conversion module typically varies with output power. Specifically, at lower output power, fixed losses such as switching losses and static power consumption account for a larger proportion, potentially resulting in lower energy conversion efficiency. As output power increases, the proportion of fixed losses in the total power decreases, thus energy conversion efficiency usually improves and peaks at a certain output power. Under higher output power conditions, increased conduction losses, inductance losses, and capacitance losses may lead to a decrease in energy conversion efficiency.

[0050] In the embodiments of the present application, the switching loss can be understood as the energy loss generated by a switching device (e.g., MOSFET, IGBT, etc.) during the switching process. The static power consumption can be understood as the energy loss generated when the power conversion module is in a stable state (i.e., the switching device does not perform switching operations). The static power consumption can include: conduction loss, leakage loss, quiescent current loss, etc. The static power consumption can also be referred to as static loss. No specific limitation is made here.

[0051] 2. Battery Management System (BMS)

[0052] The BMS is responsible for monitoring and managing the status of the power module. For example, the BMS can monitor the output voltage, output current, temperature, etc. The BMS can enable the battery to operate within a safe range and reduce abnormal conditions such as overcharging, over-discharging, and overheating of the battery.

[0053] 3. Vehicle Domain Controller (VDC)

[0054] The VDC can monitor the operating status and fault information of the power module and give prompts in case of abnormalities in the power module. Exemplarily, the abnormal conditions can include: overcharging of the power module, over-discharging of the power module, over-temperature of the battery, etc. Adaptively, the VDC can give prompts for overcharging of the power module, over-discharging of the power module, over-temperature of the battery, etc.

[0055] The VDC can also be used to control the power conversion module. For example, controlling the start and stop of the power conversion module, controlling the active restart after the power conversion module fails, controlling the adjustment of the output voltage of the power conversion module, etc. No specific limitation is made here.

[0056] 4. Other Terms

[0057] In the embodiments of the present application, "at least one" means one or more, and "multiple" means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. "At least one (item)" or similar expressions thereof refer to any combination of these items, including any combination of single item (item) or plural items (items). For example, at least one (item) of a, b, or c can represent: a, b, c, a - b, a - c, b - c, or a - b - c, where a, b, c can be single or multiple.

[0058] In the embodiments of this application, terms such as "first" and "second" are used to distinguish identical or similar items with essentially the same function and effect. For example, the first value and the second value are only used to distinguish different values ​​and do not limit their order. Those skilled in the art will understand that terms such as "first" and "second" do not limit the quantity or execution order, and that terms such as "first" and "second" do not necessarily imply that they are different.

[0059] It should be noted that in the embodiments of this application, the words "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design scheme described as "exemplarily" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or design schemes. Specifically, the use of words such as "exemplarily" or "for example" is intended to present the relevant concepts in a specific manner. The embodiments of this application are illustrated by taking the equality condition as an example, but the equality condition may also correspond to another condition. No specific limitation is made here.

[0060] Vehicles, drones, and other similar devices are equipped with at least two power modules to provide appropriate voltages for different components within the device. Taking a vehicle as an example, the at least two power modules include a high-voltage battery module and a low-voltage battery module. The high-voltage battery module can power components with high voltage requirements, such as motors, air conditioning systems, and electric heaters; the low-voltage battery module can power components with lower voltage requirements, such as headlights, audio systems, window motors, and door locks.

[0061] In some embodiments, the device may also include a power conversion module. This power conversion module can lower the output voltage of the high-voltage battery module to enable the high-voltage battery module to charge the low-voltage battery module, and / or to enable the high-voltage battery module to supply power to the low-voltage devices.

[0062] For example, Figure 1 is a schematic diagram of the structure of a vehicle provided in an embodiment of this application. As shown in Figure 1, the device includes: a high-voltage battery module 101, a DC-DC converter 102, a low-voltage battery module 103, a power consumption module 104, a DC-DC controller 105, a BMS 106, and a VDC 107.

[0063] The high-voltage battery module 101 is connected to the input terminal of the DC-DC converter 102, and the output terminal of the DC-DC converter 102 is connected to the low-voltage battery module 103; the low-voltage battery module 103 is connected to the power consumption module 104. The DC-DC converter 102 is controlled by the DC-DC controller 105; the BMS 106 is connected to the low-voltage battery module 103, and both the DC-DC converter 102 and the BMS 106 are connected to the VDC 107.

[0064] In the circuit shown in Figure 1, the DC-DC converter 102 is used to lower the output voltage of the high-voltage battery module 101, so as to enable the high-voltage battery module 101 to charge the low-voltage battery module 103, and / or to enable the high-voltage battery module 101 to supply power to the power consumption module 104. The power consumption module 104 may include at least one of the following: vehicle lights, audio system, vehicle charger, navigation device, dashcam, windshield wiper, or rearview mirror.

[0065] In a possible design, the DC-DC converter 102 starts after the vehicle is started. And the DC-DC converter 102 remains on at all times.

[0066] However, the DC-DC converter 102 has high energy loss.

[0067] Specifically, when the power demand of the power module 104 is low, the DC-DC converter 102 usually operates in the low-efficiency range, resulting in low energy conversion efficiency.

[0068] For example, Figure 2 is a schematic diagram showing the relationship between the output power and energy conversion efficiency of the DC-DC converter 102 provided in this embodiment. As shown in Figure 2, the change in energy conversion efficiency of the DC-DC converter 102 with output power can be illustrated by curve 201. It can be seen from Figure 2 that the energy conversion efficiency of the DC-DC converter 102 first increases and then slightly decreases with increasing output power. When the output power is in the range A0 to A1, the energy conversion efficiency of the DC-DC converter 102 is low, falling into the low-efficiency range. When the output power is in the range A2 to A3, the efficiency of the DC-DC converter 102 is high, falling into the high-efficiency range. A1 is less than or equal to A2.

[0069] Understandably, the output power of the DC-DC converter 102 is adjusted according to the actual demand of the load. Since both the low-voltage battery module 103 and the power consumption module 104 are connected to the output terminal of the DC-DC converter 102, the output power of the DC-DC converter 102 is related to the state of charge (SOC) of the low-voltage battery module 103 and the power demand of the power consumption module 104.

[0070] In addition, an auxiliary power supply is typically provided in the DC-DC converter 102 to ensure a stable power supply to the switching devices within it. Therefore, the auxiliary power supply is also activated when the DC-DC converter 102 is turned on. The auxiliary power supply also consumes a certain amount of electrical energy.

[0071] In some embodiments, the DC-DC controller 105 can obtain the state of charge (SOC) of the low-voltage battery module 103 from the BMS 106 via the VDC 107. Subsequently, the DC-DC controller 105 can control the DC-DC converter 102 to turn on or off based on the SOC of the low-voltage battery module 103 and the power of the power-consuming module 104.

[0072] Specifically, when the power consumption module 104 has a low power rating and the low-voltage battery module 103 has a high charge level, the DC-DC controller 105 can control the DC-DC converter 102 to turn off. The low-voltage battery module 103 supplies power to the power consumption module 104. When the low-voltage battery module 103 has a low charge level, or when the power consumption module 104 has a high power rating, the DC-DC converter 102 is controlled to turn on.

[0073] This reduces the time that the DC-DC converter 102 operates in its low-efficiency range, thus reducing energy waste caused by low energy conversion efficiency. Furthermore, it reduces the time the auxiliary power supply is on, further reducing energy consumption.

[0074] However, in scenarios where the power consumption module 104 increases, an abnormal situation may occur where the low-voltage battery module 103 experiences undervoltage faults or failures.

[0075] Understandably, the low-voltage battery module 103 has a certain internal impedance. When the output power of the low-voltage battery module 103 increases, the output current increases. This increase in current typically exacerbates polarization phenomena within the low-voltage battery module 103 (e.g., concentration polarization, electrochemical polarization, and ohmic polarization), leading to an increase in the voltage drop within the module and consequently a decrease in the output voltage. In scenarios involving a sudden increase in output power, supplying power through the low-voltage battery module 103 may result in an undervoltage fault.

[0076] In this embodiment, concentration polarization can be understood as polarization caused by changes in reactant concentration near the electrode surface; concentration polarization can also be called concentration polarization. Electrochemical polarization can be understood as polarization caused by the kinetic limitations of the electrode reaction; electrochemical polarization is usually related to factors such as the adsorption of reactants on the electrode surface and the electron transfer rate. Electrochemical polarization can also be called activation polarization. Ohmic polarization can be understood as polarization caused by the internal resistance of the battery (including the resistance of the electrolyte, electrode materials, and current collector). Ohmic polarization can also be called resistance polarization.

[0077] In some embodiments, when the power of the power module 104 is greater than a fixed value, the DC-DC converter 102 can be turned on, so that the high-voltage battery module 101 can supply power to the power module 104 through the DC-DC converter 102.

[0078] However, the DC-DC converter 102 requires some time to start up. Therefore, in scenarios where the power consumption module 104 increases rapidly, the DC-DC converter 102 may not be able to start up in time, leading to an undervoltage fault in the low-voltage battery module 103.

[0079] It should be understood that the DC-DC converter 102 may include an auxiliary power supply and a power circuit. The auxiliary power supply is used to provide the necessary operating voltage for the power circuit. The power circuit is used to regulate the voltage input to the DC-DC converter 102.

[0080] The startup process of DC-DC converter 102 may involve the following steps: auxiliary power supply startup and power circuit startup.

[0081] Auxiliary power supply startup can be understood as the process of supplying power to the auxiliary power supply. The auxiliary power supply typically turns on when the input auxiliary voltage reaches a certain level.

[0082] Power circuit startup can include soft start, feedback loop stabilization, and steady-state monitoring. Soft start can be understood as a process of gradually increasing the output voltage and current of the power circuit. This reduces the possibility of current surges or voltage overshoots at startup. Feedback loop stabilization can be understood as the process of monitoring the output voltage of the DC-DC converter 102 and adjusting it to a set range. Steady-state monitoring can be understood as the process of adjusting the power circuit based on load changes and input voltage fluctuations after the output voltage of the DC-DC converter 102 has been adjusted to the set range. It should be understood that the above power circuit startup process is only an example and may include more or fewer processes; no specific limitations are made here.

[0083] In view of this, embodiments of this application provide a control method, a control module, a power supply circuit, a device, a medium, and a chip system. The control module can adjust the operating state of the second power module based on its electrical parameters when the power conversion module is off. For example, the auxiliary power supply in the second power module can be turned on or off.

[0084] For example, if the electrical parameters of the second power module indicate that it is insufficient to supply power to the power-consuming module for a subsequent period, the auxiliary power supply in the power conversion module is activated. This pre-activation of the auxiliary power supply shortens the startup time of the power conversion module and reduces the likelihood of undervoltage faults in the second power module. Conversely, if the electrical parameters of the second power module indicate that it can supply power to the power-consuming module for a subsequent period, the power conversion module is kept off. This reduces energy consumption by keeping the power conversion module off.

[0085] The power conversion module in the control method provided in this application embodiment can be set in the power supply circuit. The control method will be described below with reference to a specific power supply circuit.

[0086] For example, Figure 3 is a schematic diagram of a power supply circuit provided in an embodiment of this application. As shown in Figure 3, the power supply circuit may include: a first power module 301, a power conversion module 302, a second power module 303, and a control module 304. The first power module 301 is connected to the input terminal of the power conversion module 302, the output terminal of the power conversion module 302 is connected to the second power module 303, the second power module 303 is connected to the power consumption module 305, and the power conversion module 302 is controlled by the control module 304.

[0087] The first power module 301 is used to supply power to the second power module 303 and the power consumption module 305 through the power conversion module 302.

[0088] In this embodiment, the first power module 301 can output DC voltage or AC voltage, and no specific limitation is made here.

[0089] Taking the output DC voltage as an example, the first power module 301 may include one or more batteries. These batteries may be connected in series or in parallel. This application embodiment does not specifically limit the number of batteries in the first power module 301, the battery connection method, etc.

[0090] In some embodiments, the first power module 301 may include an interface. This interface is used to connect to a power supply device. For example, the interface may be used to connect to the power grid, a household outlet, etc. The interface may also be used to connect to a charging device (e.g., a charger). No specific limitations are made here.

[0091] The power conversion module 302 is used to adjust the output voltage of the first power module 301 so that the adjusted voltage meets the voltage requirements of the power consumption module 305.

[0092] In this embodiment, the power conversion module 302 includes an auxiliary power supply 11 and a power circuit 12. The input terminal of the power circuit 12 is connected to the first power module 301, the output terminal of the power circuit 12 is connected to the second power module 303, and the auxiliary power supply 11 is connected to the control module 304.

[0093] The auxiliary power supply 11 is used to provide the operating voltage to the power circuit 12; the power circuit 12 is used to adjust the output voltage of the first power module 301.

[0094] In some embodiments, the power circuit 12 may include a voltage regulation circuit and a drive circuit. The voltage regulation circuit is used to adjust the output voltage of the first power module 301; the drive circuit is used to provide a suitable drive signal to the power switch (such as a MOSFET or IGBT) in the voltage regulation circuit, so that the power switch can be turned on and off according to a certain timing and amplitude. This application does not specifically limit the structure of the power circuit 12.

[0095] It should be understood that the power conversion module 302 may include any voltage-adjustable device, such as any form of buck circuit, any form of boost circuit, etc. For example, the power conversion module 302 may be a DC-DC converter, an AC-DC converter, a DC-AC converter, an AC-AC converter, etc.

[0096] The second power module 303 is used to supply power to the power consumption module 305. In this embodiment, the second power module 303 can output DC voltage or AC voltage, and no specific limitation is made here.

[0097] Taking the output DC voltage as an example, the second power module 303 may include one or more batteries. These batteries may be connected in series or in parallel. This application embodiment does not specifically limit the number of batteries in the second power module 303, the battery connection method, etc.

[0098] The control module 304 is used to acquire the electrical parameters of the second power module 303 when the power conversion module 302 is not turned on (e.g., off, pre-start). The control module 304 is also used to control the operating state of the power conversion module according to the electrical parameters of the second power module 303.

[0099] In this embodiment, the electrical parameters may include one or more of the following: output voltage, output current, or output power. The power conversion module may include the following operating states: on, pre-start, and off.

[0100] It should be understood that turning on the power conversion module 302 can be interpreted as turning on both the auxiliary power supply 11 and the power circuit 12. At this time, the power conversion module 302 can adjust the output voltage of the first power module 301, and the first power module 301 can supply power to the second power module 303 and the power consumption module 305 (as shown in Figure 4a).

[0101] The shutdown of the power conversion module 302 can be understood as the shutdown of both the auxiliary power supply and the power circuit. At this time, the power conversion module 302 does not adjust the voltage output by the first power module 301, the first power module 301 does not supply power to the second power module 303 and the power consumption module 305, and the second power module 303 supplies power to the power consumption module 305 (as shown in b in Figure 4).

[0102] The pre-start of the power conversion module 302 can be understood as the auxiliary power supply 11 being turned on and the power circuit 12 being turned off. At this time, the power conversion module 302 does not adjust the voltage output by the first power module 301. The first power module 301 does not supply power to the second power module 303 and the power consumption module 305. The second power module 303 supplies power to the power consumption module 305 (as shown in c in Figure 4).

[0103] Compared to the time it takes for the power conversion module 302 to switch from off to on, the time it takes for the power conversion module 302 to switch from pre-start to on is shorter.

[0104] In this embodiment, the control module 304 can obtain the electrical parameters of the second power module 303 from other modules (e.g., a BMS for monitoring and managing the battery); the control module can also monitor the second power module 303 to obtain its electrical parameters. No specific limitations are imposed here.

[0105] The following sections describe the triggering of the second power module 303 pre-start, the triggering of the second power module 303 turn on, and the triggering of the second power module 303 turn off.

[0106] In this embodiment, the control module 304 can control the power conversion module 302 to switch from off to pre-start when the electrical parameters of the second power module 303 meet preset condition A. Preset condition A is used to indicate that the second power module 303 is insufficient to supply power to the power consumption module 305 after a duration A.

[0107] The duration A can be any duration, and no specific limitation is made here. In some embodiments, the duration A can be greater than or equal to the duration taken for the power conversion module 302 to switch from off to on. This can reduce the possibility of the power conversion module not turning on in time due to a short duration.

[0108] In this way, by pre-activating the auxiliary power supply 11 in the power conversion module 302, the startup time of the subsequent power conversion module 302 is shortened, improving the rapid startup capability of the power conversion module 302. The second power module 303 can be activated in a timely manner in the event of a sudden increase in the power consumption module 305, thereby reducing the possibility of undervoltage faults in the second power module 303 caused by the sudden increase in the power consumption module 305.

[0109] In some embodiments, the control module 304 can predict the electrical parameters of the second power module 303 within a subsequent time period A based on the electrical parameters of the second power module 303. The power supply status within the subsequent time period A can then be determined based on the predicted electrical parameters.

[0110] The following explains how different electrical parameters trigger the pre-start of the second power supply module 303.

[0111] In one possible implementation, the electrical parameters acquired by the control module 304 include the output voltage. Specifically, the control module 304 can predict the output voltage of the second power module 303 over a past period to obtain the output voltage of the second power module 303 for a subsequent period A. The power supply status for the subsequent period A can then be determined based on the predicted output voltage.

[0112] For example, preset condition A may include: the output voltage of the second power module 303 within duration A is less than or equal to a preset value A1. Specifically, if the output voltage of the second power module 303 within duration A is less than or equal to the preset value A1, the second power module 303 is insufficient to supply power to the power consumption module 305; if the output voltage of the second power module 303 within duration A is greater than the preset value A1, the second power module 303 can supply power to the power consumption module 305.

[0113] The preset value A1 can be a fixed value or it can be adjusted in real time based on the current output power of the second power module 303. For example, the preset value A1 can be the minimum voltage required for the second power module 303 to supply power to the power consumption module 305 according to the current output power. In this embodiment, the value of the preset value A1 and the method of determining it are not specifically limited.

[0114] It should be understood that the embodiments of this application can predict the output voltage of the second power module 303 within the subsequent time period A through linear prediction, exponential prediction or any other method.

[0115] Taking the prediction of the output voltage of the second power module 303 over a past period as an example, using a three-point linear prediction method, specifically, the change in the output voltage of the second power module 303 over the past period and the predicted change in the output voltage of the second power module 303 over the subsequent period A can be understood as the same linear function. In other words, the slope of the change in the output voltage of the second power module 303 over the past period can be the same as the slope of the change in the output voltage of the second power module 303 over the predicted subsequent period A.

[0116] For example, Figure 5 is a schematic diagram of a linear function relationship provided in an embodiment of this application. Taking a past time period as ΔT as an example, as shown in Figure 5, the output voltage of the second power module 303 at time T0 is U1; the output voltage of the second power module 303 at time T1 is U2; the linear function obtained from time T0, the corresponding U1 at time T0, time T1, and the corresponding U2 at time T1 can be shown as curve 501 in Figure 5. Based on time T1, duration A, and curve 501, the output voltage of the second power module 303 after duration A can be obtained.

[0117] If the duration A is ΔtP1, then the output voltage UP1 of the second power module 303 after ΔtP1 can be the voltage corresponding to point A; if the duration A is ΔtP2, then the output voltage UP2 of the second power module 303 after ΔtP2 can be the voltage UP2 corresponding to point B.

[0118] Specifically, by calculating the slope, the voltage corresponding to point A can be U2-(U2-U1) / ΔT×ΔtP1; the voltage corresponding to point B can be U2-(U2-U1) / ΔT×ΔtP2.

[0119] Taking the prediction of the output voltage of the second power module 303 over a past period as an example, the change in the output voltage of the second power module 303 over the past period and the predicted change in the output voltage of the second power module 303 over the subsequent period A satisfy the same exponential function.

[0120] For example, Figure 6 is a schematic diagram of an exponential function relationship provided in an embodiment of this application. Taking a past period of time as ΔT, the output voltage of the second power module 303 at time T0 is U1, and the output voltage of the second power module 303 at time T1 is U2, the exponential function obtained according to time T0, U1 at time T0, and U2 at time T1 is shown as curve 601 in Figure 6.

[0121] Based on time T1 and duration A, and using the exponential function, the output voltage of the second power module 303 after duration A can be obtained. If duration A is ΔtP1, then the predicted output voltage UP1 of the second power module 303 after ΔtP1 can be the voltage corresponding to point A; if duration A is ΔtP2, then the predicted output voltage UP2 of the second power module 303 after ΔtP2 can be the voltage UP2 corresponding to point B.

[0122] In a possible second implementation, the electrical parameters acquired by the control module 304 include the output current. For example, the control module 304 can predict the output current of the second power module 303 over a past period to obtain the output current of the second power module 303 for a subsequent time period A. The power supply situation for the subsequent time period A can then be determined based on the predicted output current.

[0123] For example, preset condition A may include: the output current of the second power module 303 within duration A is greater than or equal to a preset value A2. Specifically, if the output current within duration A is greater than or equal to the preset value A2, the second power module 303 is insufficient to supply power to the power consumption module 305; if the output current of the second power module 303 within duration A is less than the preset value A2, the second power module 303 can supply power to the power consumption module 305.

[0124] The preset value A2 can be a fixed value or it can be adjusted in real time based on the current charge level. For example, the preset value A2 can be the maximum current that the second power module 303 can continuously supply within a duration A. No specific limitation is made here.

[0125] It should be understood that the embodiments of this application can predict the output current of the second power module 303 within the subsequent time period A through linear prediction, exponential prediction or any other method.

[0126] In the third possible implementation, the electrical parameters obtained by the control module 304 include: output voltage and output current.

[0127] For example, the control module 304 predicts the output power of the second power module within a subsequent time period A based on the output voltage and output current of the second power module over a past period. The power supply status within the subsequent time period A can then be determined based on the predicted output power.

[0128] For example, preset condition A may include: the output power of the second power module 303 within duration A is greater than or equal to a preset value A3. Specifically, if the output power within duration A is greater than or equal to the preset value A3, the second power module 303 is insufficient to supply power to the power consumption module 305; if the output power of the second power module 303 within duration A is less than the preset value A3, the second power module 303 can supply power to the power consumption module 305.

[0129] The preset value A3 can be a fixed value or it can be adjusted in real time based on the current charge level. For example, the preset value A3 can be the maximum power that the second power module 303 can continuously supply within a duration A. No specific limitation is made here.

[0130] In some embodiments, the output voltage within the subsequent time period A can also be obtained based on the predicted output power. The power supply situation within the subsequent time period A is then determined based on the output voltage within time period A. The determination method can refer to the determination method in the first possible implementation described above, and will not be elaborated here.

[0131] It should be understood that the output power of the second power module 303 within the subsequent time period A can be predicted by linear prediction, exponential prediction or any other method.

[0132] Taking the prediction of the output power of the second power module 303 over a past period as an example, the change in the output power of the second power module 303 over the past period and the change in the output voltage of the second power module 303 over the predicted subsequent period A satisfy the same exponential function.

[0133] For example, Figure 7 is a schematic diagram of an exponential function relationship provided in an embodiment of this application. Taking a past period of time as ΔT, the output power of the second power module 303 at time T0 is A1, and the output power of the second power module 303 at time T1 is A2, the exponential function obtained according to time T0, A1 corresponding to time T0, and A2 corresponding to time T1 is shown as curve 701 in Figure 7.

[0134] Based on time T1 and duration A, and using the exponential function, the output power of the second power module 303 after duration A can be obtained. If duration A is ΔtP1, then the predicted output power AP1 of the second power module 303 after ΔtP1 can be the power corresponding to point A; if duration A is ΔtP2, then the predicted output power AP2 of the second power module 303 after ΔtP2 can be the power corresponding to point B.

[0135] In the fourth possible implementation, the electrical parameters obtained by the control module 304 include: output power.

[0136] For example, the control module 304 can predict the output power of the second power module over a past period to obtain the output power of the second power module in the subsequent period A. The power supply situation in the subsequent period A can then be determined based on the predicted output power. For details, please refer to the implementation in the third possible implementation described above; further details are not provided here.

[0137] The above embodiments illustrate the prediction based on output voltage, output current, and output power. The control module 304 can also consider more electrical parameters for prediction, such as the temperature of the second power module, the aging degree of the second power module, the internal resistance of the second power module, and the OCV curve of the second power module. No specific limitations are made here.

[0138] The above embodiments describe the case where the second power module 303 is pre-started. The following describes the case where the second power module 303 is turned on.

[0139] In this embodiment, the control module 304 can control the power conversion module 302 to switch on when the electrical parameters of the second power module 303 meet preset condition B. Preset condition B indicates that the second power module 303 is insufficient to supply power to the power consumption module 305 after a duration B. Duration B is less than duration A.

[0140] The duration B can be any duration, and no specific limitation is made here. In some embodiments, the duration B can be greater than or equal to the duration taken for the power conversion module 302 to switch from pre-start to on. This reduces the possibility of the power conversion module not starting up in time due to a short duration.

[0141] In this way, if the power supply of the second power module 303 is predicted to be insufficient after duration B, the power conversion module 302 is controlled to start, reducing the possibility that the power conversion module 302 will not start in the event of subsequent power shortage.

[0142] In some embodiments, the control module 304 can predict the electrical parameters of the second power module 303 within a subsequent time period B based on the electrical parameters of the second power module 303. The power supply status within the subsequent time period B can then be determined based on the predicted electrical parameters.

[0143] The following explains how different electrical parameters trigger the second power module 303 to turn on.

[0144] In one possible implementation, the electrical parameters acquired by the control module 304 include the output voltage. Specifically, the control module 304 can predict the output voltage of the second power module 303 over a past period to obtain the output voltage of the second power module 303 for a subsequent time period B. The power supply status for the subsequent time period B can then be determined based on the predicted output voltage.

[0145] For example, the preset condition B may include: the output voltage of the second power module 303 within the duration B is less than or equal to a preset value B1. Specifically, if the output voltage of the second power module 303 within the duration B is less than or equal to the preset value B1, the second power module 303 is insufficient to supply power to the power consumption module 305; if the output voltage of the second power module 303 within the duration B is greater than the preset value B1, the second power module 303 can supply power to the power consumption module 305.

[0146] The preset value B1 can be a fixed value or it can be adjusted in real time based on the current output power of the second power module 303. For example, the preset value B1 can be the minimum voltage required for the second power module 303 to supply power to the power consumption module 305 according to the current output power. The preset value B1 can be the same as or different from the preset value A1. This application embodiment does not impose specific limitations on the value or determination method of the preset value B1.

[0147] In a possible second implementation, the electrical parameters acquired by the control module 304 include the output current. For example, the control module 304 can predict the output current of the second power module 303 over a past period to obtain the output current of the second power module 303 for a subsequent time period B. The power supply situation for the subsequent time period B can then be determined based on the predicted output current.

[0148] For example, the preset condition B may include: the output current of the second power module 303 within the duration B is greater than or equal to a preset value B2. Specifically, if the output current within the duration B is greater than or equal to the preset value B2, the second power module 303 is insufficient to supply power to the power consumption module 305; if the output current of the second power module 303 within the duration B is less than the preset value B2, the second power module 303 can supply power to the power consumption module 305.

[0149] The preset value B2 can be a fixed value or it can be adjusted in real time based on the current charge level. For example, the preset value B2 can be the maximum current that the second power module 303 can continuously supply within a duration B. The preset value B2 can be the same as or different from the preset value A2. No specific limitation is made here.

[0150] In the third possible implementation, the electrical parameters obtained by the control module 304 include: output voltage and output current.

[0151] For example, the control module 304 predicts the output power of the second power module within a subsequent time period B based on the output voltage and output current of the second power module over a past period. The power supply status within the subsequent time period B can then be determined based on the predicted output power.

[0152] For example, the preset condition B may include: the output power of the second power module 303 within the duration B is greater than or equal to a preset value B3. Specifically, if the output power within the duration B is greater than or equal to the preset value B3, the second power module 303 is insufficient to supply power to the power consumption module 305; if the output power of the second power module 303 within the duration B is less than the preset value B3, the second power module 303 can supply power to the power consumption module 305.

[0153] The preset value B3 can be a fixed value or it can be adjusted in real time based on the current charge level. For example, the preset value B3 can be the maximum power that the second power module 303 can continuously supply within a duration B. The preset value B3 can be the same as or different from the preset value A3. No specific limitation is made here.

[0154] In some embodiments, the output voltage within the subsequent time period B can also be obtained based on the predicted output power. The power supply situation within the subsequent time period B is then determined based on the output voltage within time period B. The determination method can refer to the determination method in the first possible implementation described above, and will not be elaborated here.

[0155] In the fourth possible implementation, the electrical parameters obtained by the control module 304 include: output power.

[0156] For example, the control module 304 can predict the output power of the second power module over a past period to obtain the output power of the second power module in the subsequent period B. The power supply situation in the subsequent period B can then be determined based on the predicted output power. For details, please refer to the implementation in the third possible implementation described above; further details are not provided here.

[0157] It should be understood that the embodiments of this application can predict the electrical parameters such as the output voltage, output current, and output power of the second power module 303 within the subsequent time period B in any way. The specific implementation method is similar to that in the pre-startup described above, and can be referred to the corresponding description above, which will not be repeated in detail here.

[0158] It should be understood that the above embodiments determine the power supply status of the second power module by measuring output voltage, output current, and output power. However, the power supply status of the second power module can also be determined by any other parameters of the second power module, such as its remaining battery power. No specific limitations are made here.

[0159] The above embodiments describe the triggering of the second power module 303 to pre-start and to turn on. The following describes the triggering of the second power module 303 to turn off during the pre-starting process.

[0160] It should be understood that if the electrical parameters of the second power module 303 do not meet preset condition A and preset condition B when the second power module 303 is off, the control power conversion module 302 will remain off.

[0161] In one possible implementation, if the electrical parameters of the second power module 303 do not meet preset condition A and preset condition B when the second power module 303 is pre-started, the power conversion module 302 is shut down.

[0162] In the second possible implementation, if the second power module 303 pre-starts for a preset duration A, and the electrical parameters of the second power module 303 do not meet the preset condition A, the power conversion module 302 is shut down. The preset duration A can be 1 second, 2 seconds, or any duration; no specific limitation is made here.

[0163] In the third possible implementation, if the second power module 303 pre-starts for a preset duration B and its electrical parameters do not meet the preset condition B, the power conversion module 302 is shut down. This reduces the number of times the auxiliary power supply needs to be turned on due to rapid power changes in the power-consuming modules. The preset duration B can be 1 second, 2 seconds, or any other duration; no specific limitation is made here.

[0164] The above embodiments describe the situation where the second power module 303 transitions from pre-start to shutdown. The following describes the situation where the second power module 303 triggers shutdown when it is turned on.

[0165] After the second power module 303 is turned on, the control module 304 can control the second power module 303 to turn off or remain on based on the charge of the second power module 303 and the output power of the power conversion module 302.

[0166] For example, if the charge of the second power module 303 is less than or equal to the first charge, the control module 304 controls the power conversion module 302 to remain on; if the charge of the second power module 303 is greater than the first charge and the power conversion module 302 is operating in the high-efficiency range, the control module 304 controls the power conversion module 302 to remain on; if the charge of the second power module 303 is greater than the first charge and the power conversion module 302 is operating in the low-efficiency range, the control module 304 controls the power conversion module 302 to be turned off.

[0167] In this embodiment, the high-efficiency range can be understood as an energy conversion efficiency greater than or equal to the value A; the low-efficiency range can be understood as an energy conversion efficiency less than the value A. The value A can be 80%, 50%, or any other value, and is not specifically limited here. The first power level can be any power level, for example, 50% of the power level of the second power module in a fully charged state, etc., and is not specifically limited here.

[0168] The triggering condition (judgment condition) for the second power module 303 to switch from on to off in the above embodiment is only an example. The second power module 303 can also be triggered to turn off by any other triggering condition. No specific limitation is made here.

[0169] The power supply circuit shown in the above embodiments can be applied to devices such as vehicles and drones. For example, taking the power supply circuit in a vehicle as shown in FIG1, the first power module 301 can correspond to the high-voltage battery module 101; the power conversion module 302 can correspond to the DC-DC converter 102; the second power module 303 can correspond to the low-voltage battery module 103; and the power consumption module 305 can correspond to the power consumption module 104.

[0170] The control module 304 may correspond to the DC-DC controller 105; the control module 304 may also include: BMS 106 and / or VDC 107.

[0171] For example, the control module 304 may include a DC-DC controller 105, but excludes a BMS 106 and a VDC 107. The DC-DC controller 105 can obtain the electrical parameters of the low-voltage battery module 103 from the BMS 106 via the VDC 107. The DC-DC controller 105 can control the operating state of the DC-DC converter 102 based on the electrical parameters of the low-voltage battery module 103. Specific control methods can be found in the corresponding descriptions above, and will not be elaborated further here.

[0172] In some embodiments, the control module 304 can also directly obtain the electrical parameters of the low-voltage battery module 103 from the BMS 106. This eliminates the need for information transmission via the VDC 107, reducing transmission latency and improving the accuracy of the electrical parameters of the low-voltage battery module 103 obtained by the control module. It also reduces judgment errors caused by inaccurate data. Furthermore, it lowers the resource occupancy of the VDC, freeing up computing resources.

[0173] In some embodiments, the control module 304 may also monitor and manage the status of the low-voltage battery module 103. For example, the control module 304 may include a DC-DC controller 105 and a BMS 106, but does not include a VDC 107.

[0174] The control module 304 can confirm the operating status of the DC-DC converter 102 through the DC-DC controller 105 or the BMS 106. The DC-DC controller 105 can switch states based on the confirmed operating status of the DC-DC converter 102.

[0175] In some embodiments, the control module 304 may also provide a notification when the power module malfunctions. For example, the control module 304 may include a DC-DC controller 105 and a VDC controller 107, but excludes a BMS 106.

[0176] In some embodiments, the control module 304 may include a DC-DC controller 105, a BMS 106, and a VDC 107. This application does not specifically limit the structure of the control module 304.

[0177] Based on the above embodiments, any two or all of the DC-DC controller 105, BMS 106, and VDC 107 can be integrated into a single chip. In this way, modules integrated into a single chip can transmit information through internal chip code, eliminating the need for communication buses between modules (e.g., controller area network (CAN) buses), thus reducing transmission latency and increasing communication speed.

[0178] In some embodiments, the DC-DC controller 105 and the BMS 106 are integrated into a single chip (as shown in Figure 8). The DC-DC controller 105 obtains the electrical parameters of the low-voltage battery module 103 from the BMS 106 without going through a communication bus. The DC-DC controller 105 and the BMS 106 can transmit data internally within the chip, eliminating the need for a communication bus and improving communication speed.

[0179] For example, the control flow of the power supply circuit in the vehicle can be as follows: Taking the DC-DC converter 102 as being turned on by default, the control flow is as follows: When the power of the power consumption module 104 is less than the first power and the charge of the low-voltage battery module 103 is greater than the first charge, the DC-DC controller 105 controls the DC-DC converter 102 to turn off. At this time, the low-voltage battery module 103 supplies power to the power consumption module 104. The first power can be any power, for example, any power corresponding to the high-efficiency range of the DC-DC converter 102, which is not specifically limited here.

[0180] After the DC-DC converter 102 is turned off, the DC-DC controller 105 acquires the electrical parameters of the low-voltage battery module 103. If the duration A of the electrical parameter indication of the low-voltage battery module 103 meets preset condition A, the DC-DC controller 105 controls the auxiliary power supply in the DC-DC converter 102 to turn on. If the duration B of the electrical parameter indication of the low-voltage battery module 103 meets preset condition B, the DC-DC controller 105 controls the DC-DC converter 102 to turn on.

[0181] If the charge of the low-voltage battery module 103 is less than or equal to the first charge, the DC-DC controller 105 controls the DC-DC converter 102 to remain on; if the charge of the low-voltage battery module 103 is greater than the first charge and the DC-DC converter 102 is operating in the high-efficiency range, the DC-DC controller 105 controls the DC-DC converter 102 to remain on; if the charge of the low-voltage battery module 103 is greater than the first charge and the DC-DC converter 102 is operating in the low-efficiency range, the DC-DC controller 105 controls the DC-DC converter 102 to turn off.

[0182] The above embodiment is illustrated with the DC-DC converter 102 turned on by default, but the DC-DC converter 102 can also be turned off by default. The control logic is similar to the control logic of the DC-DC converter 102 being turned on by default, and will not be described in detail here.

[0183] The above embodiments illustrate the structure, operation, and application of the power supply circuit in vehicles. The control method provided by the embodiments of this application will now be described with reference to Figure 9.

[0184] For example, Figure 9 is a flowchart illustrating a control method provided in an embodiment of this application. As shown in Figure 9, the control method includes:

[0185] S801. Obtain the electrical parameters of the second power module when the power conversion module is off.

[0186] The electrical parameters of the second power supply module can be referred to the corresponding description in the control module section of Figure 3 above, and will not be elaborated here.

[0187] For example, taking a DC-DC controller as the control module, the DC-DC controller can obtain the electrical parameters of the second power module from the BMS via VDC. Alternatively, taking a chip integrating a DC-DC controller and a BMS as the control module, this chip can monitor the output voltage, output current, etc., of the second power module to obtain its electrical parameters.

[0188] S802. Based on the electrical parameters of the second power supply module, control the auxiliary power supply in the power conversion module to turn on.

[0189] In some embodiments, the auxiliary power supply in the power conversion module can be turned on based on current electrical parameters. For example, the auxiliary power supply can be turned on when the output voltage is lower than a first voltage. The first voltage is greater than the minimum voltage required by the second power module to supply power to the power-consuming module.

[0190] In other embodiments, predictions can be made based on electrical parameters over a past period. If it is predicted that the power conversion module is insufficient to supply power to the power-consuming module, the auxiliary power supply can be activated. Specific implementation details can be found in the descriptions above and will not be elaborated further here.

[0191] This allows the auxiliary power supply to be turned on in advance, shortening the startup time of the subsequent power conversion module and improving the rapid startup capability of the power conversion module.

[0192] In one possible implementation, controlling the auxiliary power supply in the power conversion module to turn on according to the electrical parameters of the second power module includes: controlling the auxiliary power supply in the power conversion module to turn on when the electrical parameters of the second power module meet a first preset condition; wherein the first preset condition is used to indicate that the second power module does not meet the power supply requirements of the power consumption module after a first period of time.

[0193] The first preset condition can correspond to preset condition A in the above text, and no specific limitation is made here.

[0194] In this way, the power supply situation after the first duration can be predicted based on the electrical parameters of the second power module. When it is predicted that the second power module is insufficient to supply power to the power consumption module, the auxiliary power supply in the control power conversion module 302 is turned on in advance, shortening the subsequent start-up time of the power conversion module 302 and improving the rapid start-up capability of the power conversion module 302.

[0195] In one possible implementation, the first preset condition includes: the first voltage prediction value is less than or equal to the first voltage preset value, wherein the first voltage prediction value is a voltage value obtained by predicting the output voltage of the second power module for a first duration after the current moment based on the electrical parameters of the second power module.

[0196] In this way, the power supply status after the first time period can be determined by predicting the output voltage after the first time period.

[0197] In one possible implementation, the electrical parameters of the second power module include at least one of the following: the output voltage of the second power module, the output current of the second power module, and the output power of the second power module.

[0198] In one possible implementation, the method further includes: controlling the auxiliary power supply to shut down when the auxiliary power supply has been turned on for a preset time and the power conversion module has not been turned on.

[0199] In this way, after the auxiliary power supply has been on for a long time, the auxiliary power supply can be turned off to reduce its power consumption.

[0200] In one possible implementation, the method further includes: controlling the power conversion module to start when the electrical parameters of the second power module meet a second preset condition. The second preset condition indicates that the second power module does not meet the power supply requirements of the power consumption module after a second period of time. The second preset condition may correspond to preset condition B mentioned above.

[0201] This allows the power conversion module to be turned on in advance, reducing the likelihood of it not turning on when there is insufficient power later.

[0202] In one possible implementation, the second preset condition includes: the second voltage prediction value is less than or equal to the second voltage preset value; the second voltage prediction value is the voltage value obtained by predicting the output voltage of the second power module for a second duration after the current moment based on the electrical parameters of the second power module, and the second duration is less than the first duration.

[0203] In this way, the power supply status after the second time period can be determined by predicting the output voltage after the second time period.

[0204] This application provides a device, which includes the power supply circuit shown in the above embodiment.

[0205] This application provides an electronic device, which includes a processor and a memory; the memory stores computer execution instructions; the processor executes the computer execution instructions stored in the memory, causing the electronic device to perform the above-described method.

[0206] This application provides a chip. The chip includes a processor, which is used to call a computer program in memory to execute the technical solutions in the above embodiments. Its implementation principle and technical effects are similar to those in the related embodiments described above, and will not be repeated here.

[0207] This application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program. When the computer program is executed by a processor, it implements the methods described above. The methods described in the above embodiments can be implemented wholly or partially by software, hardware, firmware, or any combination thereof. If implemented in software, the functionality can be stored as one or more instructions or code on or transmitted over the computer-readable medium. The computer-readable medium can include computer storage media and communication media, and can also include any medium that can transfer a computer program from one place to another. The storage medium can be any target medium accessible by a computer.

[0208] In one possible implementation, a computer-readable medium may include random access memory (RAM), read-only memory (ROM), compact disc read-only memory (CD-ROM) or other optical disc storage, magnetic disk storage or other magnetic storage devices, or any other medium intended to carry or store required program code in the form of instructions or data structures, and accessible by a computer. Furthermore, any connection is appropriately referred to as a computer-readable medium. For example, if software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. As used herein, disks and optical discs include optical discs, laser discs, optical discs, digital versatile discs (DVDs), floppy disks, and Blu-ray discs, where disks typically reproduce data magnetically, while optical discs optically reproduce data using lasers. Combinations of the above should also be included within the scope of computer-readable media.

[0209] This application provides a computer program product, which includes a computer program that, when run, causes a computer to perform the above-described method.

[0210] It should be noted that the modules or components shown in the above embodiments can be one or more integrated circuits configured to implement the above methods, such as one or more application-specific integrated circuits (ASICs), one or more digital signal processors (DSPs), or one or more field-programmable gate arrays (FPGAs), etc. Furthermore, when a module is implemented through processing element scheduler code, the processing element can be a general-purpose processor, such as a central processing unit (CPU) or other processors capable of calling program code, such as a controller. Additionally, these modules can be integrated together to implement a system-on-a-chip (SOC).

[0211] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., a solid-state disk (SSD)).

[0212] It should be understood that in the description of this application, terms such as "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or order. Furthermore, the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application.

[0213] It is understood that, in the embodiments of this application, the order of the above-mentioned process numbers does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0214] The above descriptions are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of protection of the illustrated claims.

Claims

1. A control method, characterized in that, The method includes: With the power conversion module off, acquire the electrical parameters of the second power module; Based on the electrical parameters of the second power module, the auxiliary power supply in the power conversion module is turned on.

2. The method according to claim 1, characterized in that, The step of controlling the auxiliary power supply in the power conversion module to turn on according to the electrical parameters of the second power module includes: When the electrical parameters of the second power module meet the first preset condition, the auxiliary power supply in the control power conversion module is turned on. The first preset condition is used to indicate that the second power module does not meet the power supply requirements of the power consumption module after a first period of time.

3. The method according to claim 2, characterized in that, The first preset condition includes: the first voltage prediction value is less than or equal to the first preset value, wherein the first voltage prediction value is a voltage value obtained by predicting the output voltage of the second power module for a first duration after the current moment based on the electrical parameters of the second power module.

4. The method according to any one of claims 1-3, characterized in that, The electrical parameters of the second power module include at least one of the following: the output voltage of the second power module, the output current of the second power module, and the output power of the second power module.

5. The method according to any one of claims 1-4, characterized in that, The method further includes: If the auxiliary power supply is turned on for a preset time and the power conversion module is not turned on, the auxiliary power supply is controlled to be turned off.

6. The method according to any one of claims 1-5, characterized in that, The method further includes: When the electrical parameters of the second power module meet the second preset condition, the power conversion module is controlled to turn on; The second preset condition is used to indicate that the second power module does not meet the power supply requirements of the power consumption module after a second duration, wherein the second duration is less than the first duration.

7. The method according to claim 6, characterized in that, The second preset condition includes: the second voltage prediction value is less than or equal to the second voltage preset value; The second voltage prediction value is the voltage value obtained by predicting the output voltage of the second power module for a second duration after the current moment based on the electrical parameters of the second power module.

8. A power supply circuit, characterized in that, The power supply circuit includes: a first power module, a second power module, a power conversion module, and a control module; wherein, the power conversion module includes: an auxiliary power supply and a power circuit; the auxiliary power supply is used to supply power to the power circuit; the power circuit is used to adjust the output voltage of the first power module; When the power conversion module is off, the control module is used to acquire the electrical parameters of the second power module; The control module is also used to control the auxiliary power supply in the power conversion module to turn on according to the electrical parameters of the second power module.

9. The power supply circuit according to claim 8, characterized in that, The control module is specifically used to control the auxiliary power supply in the power conversion module to turn on when the electrical parameters of the second power module meet the first preset condition. The first preset condition is used to indicate that the second power module does not meet the power supply requirements of the power consumption module after a first period of time.

10. The power supply circuit according to claim 9, characterized in that, The first preset condition includes: the first voltage prediction value is less than or equal to the first voltage preset value, wherein the first voltage prediction value is a voltage value obtained by predicting the output voltage of the second power module for a first duration after the current moment based on the electrical parameters of the second power module.

11. The power supply circuit according to any one of claims 8-10, characterized in that, The electrical parameters of the second power module include at least one of the following: the output voltage of the second power module, the output current of the second power module, or the output power of the second power module.

12. The power supply circuit according to any one of claims 8-11, characterized in that, If the auxiliary power supply is turned on for a preset time and the power conversion module is not turned on, the control module is also used to control the auxiliary power supply to turn off.

13. The power supply circuit according to any one of claims 8-12, characterized in that, When the electrical parameters of the second power module meet the second preset conditions, the control module is also used to control the power conversion module to turn on; The second preset condition is used to indicate that the second power module does not meet the power supply requirements of the power consumption module after a second duration, wherein the second duration is less than the first duration.

14. The power supply circuit according to claim 13, characterized in that, The second preset condition includes: the second voltage prediction value is less than or equal to the second voltage preset value; The second voltage prediction value is the voltage value obtained by predicting the output voltage of the second power module for a second duration after the current moment based on the electrical parameters of the second power module.

15. A control module, characterized in that, Including memory and processor; The memory is used to store program code; The processor is used to call the program code to implement the method as described in any one of claims 1 to 7.

16. A chip system, characterized in that, The chip system is applied to a device, the chip system including one or more processors, the one or more processors being used to invoke computer instructions to cause the device to perform the method as described in any one of claims 1 to 7.

17. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it causes the device to perform the method as described in any one of claims 1 to 7.

18. A computer program product, characterized in that, Includes a computer program, which, when run, causes the device to perform the method as described in any one of claims 1 to 7.

19. A device, characterized in that, include: The control module in the power supply circuit according to any one of claims 8-14.

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