Power supply control method and device

Abstract

The invention provides a power supply control method and device, and relates to the technical field of circuits. The control method comprises the steps of determining a target monitoring rule corresponding to an input voltage based on the type of the input voltage; based on the target monitoring rule, monitoring the input voltage; and controlling the path of the input voltage flowing into the load to be opened in response to monitoring that the input voltage meets the stable condition.

Description

Technical Field

[0001] The present disclosure relates to the field of power supply technology, and in particular to a power supply control method and device. Background Art

[0002] When plugging or unplugging the input power cord, if the input voltage is unstable or shaking, a large surge current may be generated, causing damage to internal components and affecting the normal operation of the equipment. Summary of the invention

[0003] The present disclosure provides a power control method and device to at least solve the above technical problems existing in the background technology.

[0004] According to a first aspect of the present disclosure, a power supply control method is provided, comprising: determining a target monitoring rule corresponding to the input voltage based on the type of input voltage; monitoring the input voltage based on the target monitoring rule; and in response to monitoring that the input voltage meets a stability condition, controlling a path for the input voltage to flow into a load to be opened.

[0005] In one possible implementation, the stability condition includes at least one of the following: the type of the input voltage does not change within the stable time corresponding to the input voltage; the number of consecutive frequency cycles of the same type of the input voltage reaches the cycle monitoring number corresponding to the input voltage; the monitoring time of the input voltage reaches the target time.

[0006] In one possible implementation, the determining of the target monitoring rule corresponding to the input voltage based on the type of the input voltage includes: in response to the type of the input voltage being the first type, determining the target monitoring rule corresponding to the input voltage to be the first monitoring rule; accordingly, monitoring the input voltage based on the first monitoring rule includes at least one of the following: monitoring the type of the input voltage, and in response to the type of the input voltage remaining as the first type within a first stable duration corresponding to an input voltage of the first type, determining that the input voltage is monitored to satisfy a stability condition; monitoring the type of the input voltage in each frequency cycle, and in response to the type of the input voltage being the first type for a first number of consecutive frequency cycles, determining that the input voltage is monitored to satisfy a stability condition, the first number being the number of period monitoring corresponding to the input voltage of the first type; in response to the monitoring duration of the input voltage reaching a target duration, determining that the input voltage is monitored to satisfy a stability condition.

[0007] In one possible implementation, the types of input voltages in response to a first number of consecutive frequency cycles are all of the first type, including: in response to the root mean square value of the input voltage in a first number of consecutive frequency cycles, the difference between the root mean square value of the standard voltage corresponding to the first type is less than a first threshold.

[0008] In one possible implementation, the determination of the target monitoring rule corresponding to the input voltage based on the type of the input voltage includes: in response to the type of the input voltage being the second type, determining that the target monitoring rule corresponding to the input voltage is the second monitoring rule; accordingly, based on the second monitoring rule, monitoring the input voltage includes at least one of the following: monitoring the type of the input voltage, and in response to the type of the input voltage remaining as the second type within a second stable time corresponding to the second type of input voltage, determining that the input voltage is monitored to satisfy a stability condition; monitoring the type of the input voltage in each frequency cycle, and in response to the type of the input voltage being the second type for a second number of consecutive frequency cycles, determining that the input voltage is monitored to satisfy a stability condition, the second number being the number of period monitoring corresponding to the second type of input voltage; in response to the monitoring duration of the input voltage reaching a target duration, determining that the input voltage is monitored to satisfy a stability condition.

[0009] In one possible implementation, after the response that the type of the input voltage is the second type, it also includes: in response to the value of the input voltage being greater than a second threshold, determining that the target monitoring rule corresponding to the input voltage is the second monitoring rule; in response to the value of the input voltage being not greater than the second threshold, controlling the path of the input voltage flowing into the load to remain in a closed state; wherein the second threshold is the minimum voltage value that can ensure the normal operation of the load.

[0010] In one possible implementation, the monitoring of the input voltage based on the second monitoring rule also includes: determining the voltage change rate of the input voltage within the second stable time period, and in response to the voltage change rate being less than a third threshold, determining that the monitored input voltage meets the stability condition; determining the voltage change rate of the input voltage within the second stable time period, and filtering out unstable voltages in response to the voltage change rate so that the input voltage meets the stability condition.

[0011] In one possible implementation manner, controlling the path for the input voltage to flow into the load to be opened includes: controlling a relay located between a power supply unit and the load to be closed, so that the path for the input voltage to flow into the load is opened.

[0012] In one possible implementation, before determining the target monitoring rule corresponding to the input voltage based on the type of the input voltage, it also includes: in response to the input voltage being in an on-state and the difference between the maximum value of the input voltage and the voltage of the target capacitor is less than a fourth threshold, determining the target monitoring rule corresponding to the input voltage based on the type of the input voltage, the capacity of the target capacitor is greater than a fifth threshold.

[0013] According to a second aspect of the present disclosure, a power supply control device is provided, comprising: a determination module for determining a target monitoring rule corresponding to an input voltage based on the type of the input voltage; a monitoring module for monitoring the input voltage based on the target monitoring rule; and a control module for controlling the path for the input voltage to flow into a load to be opened in response to monitoring that the input voltage meets a stability condition.

[0014] According to a third aspect of the present disclosure, there is provided an electronic device, including:

[0015] at least one processor; and

[0016] a memory communicatively connected to the at least one processor; wherein,

[0017] The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the method described in the present disclosure.

[0018] According to a fourth aspect of the present disclosure, a non-transitory computer-readable storage medium storing computer instructions is provided, wherein the computer instructions are used to cause the computer to execute the method described in the present disclosure.

[0019] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, in which:

[0021] In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.

[0022] Figure 1 A schematic diagram showing a process of a power control method according to an embodiment of the present disclosure Figure 1 ;

[0023] Figure 2 A schematic diagram showing a process of a power control method according to an embodiment of the present disclosure Figure 2 ;

[0024] Figure 3 A schematic diagram showing a process of a power control method according to an embodiment of the present disclosure Figure 3 ;

[0025] Figure 4 A schematic diagram showing a process of a power control method according to an embodiment of the present disclosure Figure 4 ;

[0026] Figure 5 The waveform diagram of various parameters corresponding to the poor contact of the existing plug-in power line is shown;

[0027] Figure 6 A schematic diagram showing a power control method according to an embodiment of the present disclosure Figure 1 ;

[0028] Figure 7 A schematic diagram showing a power control method according to an embodiment of the present disclosure Figure 2 ;

[0029] Figure 8 A schematic diagram of the structure of a power supply control device according to an embodiment of the present disclosure is shown;

[0030] Fig. 9 A schematic diagram of the structure of an electronic device according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0031] In order to make the purpose, features, and advantages of the present disclosure more obvious and easy to understand, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present disclosure.

[0032] When plugging or unplugging the power cord, if the power cord has poor contact, when you try to shake the contact, the contact point may transmit a large amount of current in a short period of time, forming a transient high current pulse, that is, surge current; in addition, when the power cord is partially in contact, the X-capacitor may have begun to charge, and when the contact is disconnected and then re-contacted, the X-capacitor will quickly discharge through the contact point, and the charge will be released in a very short time, resulting in a large surge current, and the discharge of the X-capacitor may be mistakenly identified as a stable DC voltage input, causing the device to respond in the manner of DC input, causing the surge current to impact the components inside the device and damage the device.

[0033] Figure 1 A schematic diagram showing a process of a power control method according to an embodiment of the present disclosure Figure 1 ,like Figure 1 As shown, a power control method includes:

[0034] Step S101 : determining a target monitoring rule corresponding to the input voltage based on the type of the input voltage.

[0035] In this embodiment, the type of input voltage can be a direct current (DC) input voltage or an alternating current (AC) input voltage. Different types of input voltages correspond to different target monitoring rules, and the target monitoring rules are used to monitor whether the input voltage is stable.

[0036] In one embodiment, different types of input voltages correspond to different target monitoring rules due to different voltage characteristics. For example, a stable AC input voltage has periodic changes, so the target monitoring rule corresponding to the AC input voltage can be to monitor whether the input voltage fluctuates up and down at a corresponding frequency over time for a long time; a stable DC input voltage has constancy and often does not change over time, so the target monitoring rule corresponding to the DC input voltage can be to monitor whether the input voltage is maintained at a certain target value for a long time, or the difference from the target value is less than a certain threshold.

[0037] Step S102: monitor the input voltage based on the target monitoring rule.

[0038] In this embodiment, after determining the target monitoring rule corresponding to the input voltage, it is necessary to monitor whether the input voltage is stable based on the target monitoring rule. In one example, for AC input voltage, the input voltage can be sampled at regular intervals to monitor whether the sampled input voltage meets the corresponding fluctuation frequency; for DC input voltage, the input voltage can be sampled at regular intervals to monitor whether the sampled input voltage maintains a certain target value, or the difference with the target value is less than a certain threshold.

[0039] Step S103 , in response to monitoring that the input voltage meets the stability condition, controlling the path for the input voltage to flow into the load to be opened.

[0040] In this embodiment, for the AC input voltage, if the input voltage fluctuates up and down at a corresponding frequency over time for a long time, then in response to monitoring that the input voltage meets the stability condition; for the DC input voltage, if the input voltage is maintained at a certain target value for a long time, or the difference from the target value is less than a certain threshold, then in response to monitoring that the input voltage meets the stability condition, regardless of whether it is the AC input voltage or the DC input voltage, if it is monitored that the input voltage meets the stability condition, the path for the input voltage to flow into the load is controlled to be opened, so that the input voltage can flow normally into the load for power supply.

[0041] In the present disclosure, the input voltage is monitored based on the target monitoring rules corresponding to the input voltage. If the input voltage is monitored to meet the stability condition, the path for the input voltage to flow into the load is controlled to be opened. That is, in order to avoid the surge current problem, the present disclosure adopts a delay mechanism. The path for the input voltage to flow into the load is controlled to be opened only after the input voltage is stable, avoiding the period when surge current may be generated, thereby preventing surge current from impacting the components inside the equipment and causing damage to the equipment, thereby improving the reliability and service life of the equipment.

[0042] In another embodiment, the “stable condition” in step S103 includes at least one of the following:

[0043] The type of input voltage does not change within the stable time corresponding to the input voltage; the number of consecutive frequency cycles of the same type of input voltage reaches the number of cycle monitoring corresponding to the input voltage; the monitoring time of the input voltage reaches the target time.

[0044] In this embodiment, the stability condition that the input voltage needs to meet may be: the type of the input voltage does not change within the stability time corresponding to the input voltage. The stability time represents the minimum time that the input voltage needs to remain stable before the input voltage is input into the load. The stability time is greater than the time when the surge current may appear. The stability time corresponding to different types of input voltages can be the same or different, and the stability time can be set based on actual conditions.

[0045] In this embodiment, the stability condition that the input voltage needs to meet may also be: the number of consecutive frequency cycles of the same type of input voltage reaches the number of cycle monitoring corresponding to the input voltage. The frequency cycle is the time interval for sampling and analysis during the monitoring process. The number of cycle monitoring represents the number of frequency cycles that the input voltage needs to remain stable before the input voltage is input into the load. If the number of cycle monitoring is n, the total duration of n frequency cycles is greater than the duration that the surge current may appear. If the type of the input voltage is the same in n consecutive frequency cycles, it is determined that the input voltage meets the stability condition.

[0046] In this embodiment, the stability condition that the input voltage needs to meet may also be: the monitoring time of the input voltage reaches the target time. The target time is greater than the time when the surge current may appear, and is also greater than the total time of the stable time and the number of frequency cycles monitored in the cycle. During the monitoring process, if the input voltage is in a state of switching between different types of input voltages for a long time and cannot remain unchanged within the stable time or within the number of frequency cycles monitored in the continuous cycle, it can be determined that the input voltage meets the stability condition after the monitoring time of the input voltage reaches the target time.

[0047] In this embodiment, the stability condition that the input voltage needs to meet may also be: the type of the input voltage does not change within the stable time period corresponding to the input voltage, or the number of consecutive frequency cycles of the same type of input voltage reaches the cycle monitoring number corresponding to the input voltage. Based on the stability time and the total time of the number of frequency cycles monitored by the cycle, the priorities of the two corresponding conditions are determined. For example, if the stability time is less than the total time of the number of frequency cycles monitored by the cycle, the priority of the condition corresponding to the stability time is greater than the priority of the condition corresponding to the total time of the number of frequency cycles monitored by the cycle. Then, if the type of the input voltage does not change within the stability time corresponding to the input voltage, it can be determined that the input voltage meets the stability condition. If the condition corresponding to the stability time is not met, continue to judge whether the input voltage meets the condition corresponding to the total time of the number of frequency cycles monitored by the cycle; if the stability time is greater than the total time of the number of frequency cycles monitored by the cycle, the priority of the condition corresponding to the total time of the number of frequency cycles monitored by the cycle is greater than the priority of the condition corresponding to the stability time, then if the number of consecutive frequency cycles of the same type of input voltage reaches the number of cycle monitoring cycles corresponding to the input voltage, it can be determined that the input voltage meets the stability condition. If the condition corresponding to the total time of the number of frequency cycles monitored by the cycle is not met, it is necessary to continue to judge whether the input voltage meets the condition corresponding to the stability time.

[0048] In this embodiment, the stability conditions that the input voltage needs to meet may also be: the type of the input voltage does not change within the stable time corresponding to the input voltage, or the number of consecutive frequency cycles of the same type of input voltage reaches the cycle monitoring number corresponding to the input voltage, or the monitoring time of the input voltage reaches the target time. In another example, the priorities of the corresponding three conditions are determined based on the stable duration, the total duration of the number of periodic monitoring frequency cycles and the target duration. For example, if the stable duration is less than the total duration of the number of periodic monitoring frequency cycles, and the total duration of the number of periodic monitoring frequency cycles is less than the target duration, the priority of the condition corresponding to the stable duration is the highest, followed by the priority of the condition corresponding to the total duration of the number of periodic monitoring frequency cycles, and the priority of the condition corresponding to the target duration is the lowest. When it is determined that the type of input voltage has not changed within the stable duration corresponding to the input voltage, it can be determined that the input voltage meets the stable condition. If the condition corresponding to the stable duration is not met, it is determined whether the input voltage meets the condition corresponding to the total duration of the number of periodic monitoring frequency cycles. If so, it is determined that the input voltage meets the stable condition. If the condition corresponding to the stable duration is not met, it is continued to be determined whether the input voltage meets the condition corresponding to the target duration. If so, it is determined that the input voltage meets the stable condition.

[0049] Figure 2 A schematic diagram showing a process of a power control method according to an embodiment of the present disclosure Figure 2 ,like Figure 2 As shown, a power control method includes:

[0050] Step S201 , in response to the input voltage being of the first type, determining that a target monitoring rule corresponding to the input voltage is a first monitoring rule.

[0051] In this embodiment, the first type of input voltage is an AC input voltage, and the target monitoring rule corresponding to the AC input voltage is a first monitoring rule.

[0052] Step S202: monitor the input voltage based on the first monitoring rule.

[0053] In this embodiment, monitoring the input voltage based on the first monitoring rule may include: monitoring the type of the input voltage, and in response to the type of the input voltage remaining as the first type within a first stable time corresponding to the first type of input voltage, determining that the monitored input voltage meets the stability condition. In one example, the first stable time corresponding to the AC input voltage may be 600ms, and if the type of the input voltage remains as AC voltage within 600ms, it is determined that the input voltage meets the stability condition.

[0054] In this embodiment, monitoring the input voltage based on the first monitoring rule may also include: monitoring the type of the input voltage within each frequency cycle, and in response to the input voltage being of the first type for a first number of consecutive frequency cycles, determining that the monitored input voltage meets the stability condition, and the first number is the number of period monitoring corresponding to the first type of input voltage.

[0055] In one example, the AC stability count can be set in advance, and the initial value of the AC stability count is 0. For the input voltage, the type of the input voltage in each frequency cycle is monitored. If the type of the input voltage in the current frequency cycle is still AC, the AC stability count is increased by 1 until the value of the AC stability count reaches a first number, and it is determined that the input voltage meets the stability condition; if the type of the input voltage in the current frequency cycle is not AC, the AC stability count is cleared.

[0056] In another example, different AC input voltages correspond to different frequency periods, and the frequency period may be the AC input voltage's own fluctuation frequency, or may be half of the AC input voltage's own fluctuation frequency. For example, when the AC input voltage's own fluctuation frequency is 50 Hz, the frequency period is 10 ms, and when the AC input voltage's own fluctuation frequency is 60 Hz, the frequency period is 8.33 ms. The first quantities corresponding to different AC input voltages may be the same or different. For example, regardless of whether the AC input voltage's own fluctuation frequency is 50 Hz or 60 Hz, the first quantity may be 54, or the AC input voltage's own fluctuation frequency of 50 Hz may correspond to the first quantity of 54, and the AC input voltage's own fluctuation frequency of 60 Hz may correspond to the first quantity of 60.

[0057] In another example, in response to the input voltage type being the first type in a first number of consecutive frequency cycles, including: in response to the RMS value of the input voltage in a first number of consecutive frequency cycles, the difference between the RMS value of the standard voltage corresponding to the first type is less than a first threshold. For the input voltage, the RMS value (RMS) of the input voltage in each frequency cycle can be determined. If the difference between the RMS in the frequency cycle and the standard RMS corresponding to the input voltage of the first type is less than the first threshold, the input voltage in the frequency cycle is determined to be an AC input voltage, wherein the first threshold can be set according to actual conditions. The present disclosure does not limit the value of the first threshold. In one example, the value of the first threshold can be 1 to 5.

[0058] In another example, the AC stability count and the condition corresponding to the first stable duration can be combined to determine whether the input voltage meets the stability condition, that is, when the value of the AC stability count reaches the first number, or the input voltage remains as an AC voltage during the corresponding first stable duration, it is determined that the input voltage meets the stability condition. In another example, for an input voltage with a self-fluctuation frequency of 50Hz, the frequency cycle is 10ms, the first number is 54, and the first stable duration is 600ms. Since the total duration of 54 frequency cycles is 540, which is greater than the first stable duration, the priority of the condition corresponding to the AC stability count is greater than the priority of the condition corresponding to the first stable duration. Therefore, when the value of the AC stability count reaches 54, it is determined that the input voltage meets the stability condition. If the value of the AC stability count cannot accumulate to 54, it is determined whether the input voltage remains as an AC voltage within 600ms. If so, it is determined that the input voltage meets the stability condition.

[0059] In this embodiment, in response to the monitoring time of the input voltage reaching the target time, it is determined that the monitored input voltage meets the stability condition. In one example, the target time can be 6s, that is, if the input voltage is in a state of switching between different types of input voltages for a long time, and cannot remain unchanged within the first stable time or remain unchanged within a first number of consecutive frequency cycles, it can be determined that the input voltage meets the stability condition after the monitoring time of the input voltage reaches 6s. For example, for an input voltage with its own fluctuation frequency of 50Hz, the first stable time is 600ms. If the input voltage is monitored to remain at an AC input voltage for 450ms and then changes to a DC input voltage, and the DC input voltage remains at an AC input voltage for 450ms and then changes to an AC input voltage... and so on, it can be determined that the input voltage meets the stability condition after the monitoring time of the input voltage reaches 6s.

[0060] Step S203 , in response to monitoring that the input voltage meets the stability condition, controlling the path for the input voltage to flow into the load to be opened.

[0061] The specific implementation details of step S203 are similar to those of step S103 and will not be repeated here.

[0062] In the present disclosure, for the case where the input voltage is an AC input voltage, the corresponding target monitoring rule is the first monitoring rule, and the first monitoring rule includes: the type of the input voltage remains the first type within the first stable time corresponding to the input voltage, the type of the input voltage is the first type within a first number of consecutive frequency cycles, the monitoring time of the input voltage reaches the target time, a combination of any two of the above three, or a combination of the above three. In this way, accurate monitoring of the AC input voltage can be achieved and the accuracy of the AC input voltage monitoring results can be improved.

[0063] Figure 3A schematic diagram showing a process of a power control method according to an embodiment of the present disclosure Figure 3 ,like Figure 3 As shown, a power control method includes:

[0064] Step S301 , in response to the type of the input voltage being the second type, determining that the target monitoring rule corresponding to the input voltage is the second monitoring rule.

[0065] In this embodiment, the second type of input voltage is a DC input voltage, and the target monitoring rule corresponding to the DC input voltage is the second monitoring rule.

[0066] Step S302: monitor the input voltage based on the second monitoring rule.

[0067] In this embodiment, monitoring the input voltage based on the second monitoring rule may include: monitoring the type of the input voltage, and in response to the type of the input voltage remaining as the second type within a second stable time corresponding to the second type of input voltage, determining that the monitored input voltage meets the stability condition. In one example, the second stable time corresponding to the DC input voltage may be 500ms, and if the type of the input voltage remains as a DC voltage within 500ms, it is determined that the input voltage meets the stability condition.

[0068] In this embodiment, monitoring the input voltage based on the second monitoring rule can also include: monitoring the type of input voltage in each frequency cycle, and in response to the input voltage being of the second type for a second number of consecutive frequency cycles, determining that the monitored input voltage meets the stability condition, and the second number is the number of period monitoring corresponding to the second type of input voltage.

[0069] In one example, a DC stability count may be set in advance, and the initial value of the DC stability count is 0. For the input voltage, the type of the input voltage in each frequency cycle is monitored. If the type of the input voltage in the current frequency cycle is still DC, the DC stability count is increased by 1 until the value of the DC stability count reaches a second number, and it is determined that the input voltage meets the stability condition. The frequency cycle corresponding to the DC input voltage may be 24ms; and the second number corresponding to the DC input voltage may be 21.

[0070] In another example, in response to the input voltage type being the second type for a second number of consecutive frequency cycles, including: in response to the average value of the input voltage for a second number of consecutive frequency cycles, the difference between the average value and the standard value corresponding to the input voltage of the second type is less than a first threshold.

[0071] In another example, when the value of the DC stable count reaches the second number, it can be determined that the input voltage meets the stability condition, or when the value of the DC stable count reaches the second number and the input voltage remains as a DC voltage for the corresponding second stable time, it can be determined that the input voltage meets the stability condition. For example, if the frequency period corresponding to the DC input voltage is 24ms, the second number corresponding to the DC input voltage is 21, and the second stable time is 500ms, when the value of the DC stable count reaches the second number, it proves that the input voltage remains as a DC voltage for 504ms. At this time, the value of the DC stable count reaches 21 and the input voltage remains as a DC voltage for 500ms, and it can be directly determined that the input voltage meets the stability condition.

[0072] In this embodiment, monitoring the input voltage based on the second monitoring rule may further include: in response to the monitoring duration of the input voltage reaching the target duration, determining that the monitored input voltage meets the stability condition. In one example, the target duration may be 6 seconds, that is, if the input voltage is in a state of switching between different types of input voltages for a long time and cannot remain unchanged within the first stable duration or within a first number of consecutive frequency cycles, it may be determined that the input voltage meets the stability condition after the monitoring duration of the input voltage reaches 6 seconds.

[0073] Step S303 , in response to monitoring that the input voltage meets the stability condition, controlling the path for the input voltage to flow into the load to be opened.

[0074] The specific implementation details of step S303 are similar to those of step S103 and are not repeated here.

[0075] In the present disclosure, for the case where the input voltage is a DC input voltage, the corresponding target monitoring rule is the second monitoring rule, and the second monitoring rule includes: the type of the input voltage remains the second type within a second stable time period corresponding to the input voltage, the type of the input voltage is the second type for a second number of consecutive frequency cycles, and the monitoring time of the input voltage reaches the target time period. In this way, accurate monitoring of the DC input voltage can be achieved, and the accuracy of the DC input voltage monitoring results can be improved.

[0076] In another embodiment, after "in response to the input voltage being of the second type" in step S301, a power control method further includes:

[0077] In response to the input voltage value being greater than a second threshold, the target monitoring rule corresponding to the input voltage is determined to be the second monitoring rule; in response to the input voltage value being not greater than the second threshold, the path for the input voltage to flow into the load is controlled to remain in a closed state; wherein the second threshold is the minimum voltage value that can ensure the normal operation of the load.

[0078] In this embodiment, the second threshold is the minimum voltage value that can ensure the normal operation of the load. If the input voltage is a DC input voltage, it is also necessary to determine whether the value of the input voltage is greater than the second threshold. If the value of the input voltage is greater than the second threshold, the target monitoring rule corresponding to the DC input voltage is determined to be the second monitoring rule, and subsequent monitoring is performed based on the second monitoring rule; if the value of the input voltage is not greater than the second threshold, it proves that the input voltage cannot normally power the load. At this time, no subsequent monitoring is required, and the path for the input voltage to flow into the load can be controlled to remain in a closed state to prevent the input voltage from flowing into the load, thereby avoiding resource waste and improving monitoring efficiency.

[0079] In one example, the second threshold may be 70V. The 12V standby power (SB) in the internal load will shut down when the large capacitor voltage is less than 75V. Therefore, the second threshold is set to 70V to ensure that the large capacitor voltage is maintained above 75V so that the load can operate normally.

[0080] In another embodiment, step S302 “monitoring the input voltage based on the second monitoring rule” further includes:

[0081] Determine the voltage change rate of the input voltage within the second stable time period, and in response to the voltage change rate being less than a third threshold, determine that the monitored input voltage meets the stability condition; determine the voltage change rate of the input voltage within the second stable time period, and filter out unstable voltages in response to the voltage change rate so that the input voltage meets the stability condition.

[0082] In this embodiment, monitoring the input voltage based on the second monitoring rule also includes: determining the voltage change rate of the input voltage within the second stable time length, and in response to the voltage change rate being less than the third threshold, determining that the monitored input voltage meets the stability condition. A normal DC input voltage should be a constant value, and its voltage change rate is often small, while the voltage change rate of the DC input voltage generated by the discharge of the X safety capacitor is often large. Therefore, if the input voltage is DC, it is also necessary to determine whether the voltage change rate of the input voltage within the second stable time length is less than the third threshold. If it is less than the third threshold, it is determined that the input voltage is a normal DC voltage. If it is not less than the third threshold, it is determined that the input voltage is a DC voltage generated by the discharge of the X safety capacitor. At this time, the path for the input voltage to flow into the load cannot be controlled to open, thereby avoiding the surge current caused by the discharge of the X safety capacitor, and further improving the reliability and service life of the equipment. In an example, in a 70V DC voltage environment, the minimum discharge rate of the X safety capacitor is 85V / s, so the third threshold can be set to 80V / s. If the voltage change rate is less than 80V / s, it proves that the input voltage is a normal DC voltage rather than a DC voltage generated by the discharge of the X safety capacitor.

[0083] In this embodiment, monitoring the input voltage based on the second monitoring rule also includes: if the input voltage is DC, it is necessary to determine the voltage change rate of the input voltage within the second stable time period, and filter out unstable voltage based on the voltage change rate so that the input voltage meets the stability condition.

[0084] Figure 4 A schematic diagram showing a process of a power control method according to an embodiment of the present disclosure Figure 4 ,like Figure 4 As shown, a power control method includes:

[0085] Step S401 , in response to the input voltage being in an on state, and the difference between the maximum value of the input voltage and the voltage of the target capacitor being less than a fourth threshold.

[0086] In this embodiment, before monitoring the input voltage, it is also necessary to ensure that the input voltage is in place and the difference between the input voltage and the voltage of the target capacitor is less than the fourth threshold. In one example, the capacity of the target capacitor is greater than the fifth threshold, that is, the target capacitor is a large capacitor, and the fourth threshold can be 30V. When the input voltage is in place and the difference between the peak value of the input voltage and the voltage of the large capacitor is less than 30V, subsequent monitoring is performed, otherwise the input voltage is considered abnormal, and the path for the input voltage to flow into the load is kept in a closed state.

[0087] Step S402: determining a target monitoring rule corresponding to the input voltage based on the type of the input voltage.

[0088] Step S403: monitor the input voltage based on the target monitoring rule.

[0089] The specific implementation details of step S402-step S403 are similar to those of step S101-step S102 and will not be repeated here.

[0090] Step S404 , in response to monitoring that the input voltage meets the stability condition, controlling the relay between the power supply unit and the load to close so that a path for the input voltage to flow into the load is opened.

[0091] In this embodiment, a relay located between the power supply unit and the load controls whether the path for the input voltage to flow into the load is open. If it is monitored that the input voltage meets the stability condition, the relay is controlled to close to connect the path between the power supply unit and the load so that the input power flows into the load; if it is not monitored that the input voltage meets the stability condition, the relay is kept in a non-closed state.

[0092] Figure 5 The waveform diagram of various parameters corresponding to the poor contact of the existing plug-in power cord is shown. Figure 6 A schematic diagram showing a power control method according to an embodiment of the present disclosure Figure 1In order to facilitate the understanding of the present disclosure, the following Figure 5 and Figure 6 Explain the solution of this disclosure:

[0093] The waveform diagrams of the corresponding parameters when the existing plug-in power cord has poor contact are as follows: Figure 5 As shown in the figure, the input voltage is AC input voltage. In stage a, no AC in-position signal is generated, and the relay control is not performed at this time. From time T1, the AC in-position signal is generated. From time T1, in stage b, the input voltage is still AC input voltage, but in stage c, the input voltage is switched to DC voltage. Since the input voltage is not DC input voltage, the DC voltage in stage c is actually the DC voltage generated by the discharge of the X safety capacitor. However, the device will mistakenly identify the DC voltage in stage c as a normal DC input voltage, and perform relay control at time T3 to close the relay, as shown in the figure. Figure 5 After T3, the relay control signal is generated. After T3, the DC voltage generated by the discharge of the X safety capacitor in phase c will flow into the load. The device will respond incorrectly, resulting in a surge current at T4. That is, the relay is closed before the surge current is generated. The surge current will impact the internal components of the device and cause damage to the device.

[0094] The waveform diagrams of various parameters corresponding to the circuit after adopting the method disclosed in the present invention are as follows: Figure 6 As shown, the input voltage is an AC input voltage. In the first stage, no AC presence signal is generated, and monitoring is not performed at this time. From the second stage, an AC presence signal is generated and the input voltage starts to be monitored. In the second stage, the input voltage is still AC input voltage, and the first monitoring rule corresponding to the AC input voltage is used to monitor the AC input. If the AC input voltage has not yet been monitored to meet the stability condition, the input voltage is switched to DC input voltage. Since the input voltage is not DC input voltage, the DC input voltage is actually a DC voltage generated by the discharge of the X safety capacitor due to poor contact during plugging and unplugging, and the third stage is entered at this time; in the third stage, the second monitoring rule corresponding to the DC input voltage is used to monitor the DC input. If the DC input voltage has not yet been monitored to meet the stability condition, the input voltage is switched to AC input voltage, and the fourth stage is entered at this time; in the fourth stage, the first monitoring rule corresponding to the AC input voltage is used to monitor the AC input. If the AC input voltage has not yet been monitored to meet the stability condition, the input voltage is switched to DC input voltage, and the fifth stage is entered at this time; in the fifth stage, the second monitoring rule corresponding to the DC input voltage is used to monitor the DC input. If the DC input voltage has not yet been monitored to meet the stability condition, the input voltage is switched to AC input voltage, and the sixth stage is entered at this time; in the sixth stage, the first monitoring rule corresponding to the AC input voltage is used to monitor the AC input, and after monitoring that the AC input voltage meets the stability condition, the relay control is performed to close the relay, such as Figure 5 The relay control signal is generated in the 7th stage. Therefore, the relay is controlled to close only after the input AC input voltage is stable, avoiding the period when surge current may be generated, thereby preventing surge current from impacting the internal components of the equipment and causing damage to the equipment, and improving the reliability and service life of the equipment.

[0095] Figure 7 A schematic diagram showing a power control method according to an embodiment of the present disclosure Figure 2 ,like Figure 7 The circuit shown in the figure is combined with a processing chip (such as a microcontroller unit MCU) to implement a power control method in an embodiment of the present disclosure. Figure 7 As shown, the circuit includes two parts: an electromagnetic interference (EMI) circuit and a power factor correction (PFC) circuit. The EMI circuit is used to filter the input voltage, and the PFC circuit is used to correct the power factor of the input voltage. In the EMI circuit, the input voltage Vin flows into the EMI circuit from the fuse A side. After the EMI circuit filters the input voltage Vin, the filtered input voltage Vin is input into the PFC circuit. The diode B, MOS tube C and PFC driver E in the PFC circuit jointly perform power factor correction on the filtered input voltage Vin to obtain the PFC voltage. Through the control of the relay, the PFC voltage can flow to the positive electrode B+ of the power supply and the load. The filtered input voltage Vin is also input into the bypass diode, which provides a bypass path to protect the circuit from reverse voltage and overvoltage.

[0096] If a surge current occurs, components A, B, and C may all be damaged to varying degrees. Therefore, the present disclosure proposes a power control method, which is specifically performed by the cooperation of an MCU, a component D, and a relay, wherein component D is a sampling circuit for sampling the input voltage. In addition, the opening and closing of the relay can be controlled by a relay control signal F. In one example, the input voltage is sampled based on the sampling circuit D in the EMI circuit, and the sampled voltage is input into the MCU. The MCU identifies the type of the sampled voltage and determines the voltage value, and monitors the sampled voltage based on the type and voltage value of the sampled voltage to determine the stability of the sampled voltage. When the sampling point sample meets the stability condition, a relay control signal F for controlling the relay to close is generated, and then the MCU sends the relay control signal F to the circuit to control the relay to close.

[0097] In addition, when the input voltage does not meet the stability condition, the PFC circuit will not perform PFC correction on the AC voltage, but will perform PFC correction on the DC voltage. Figure 5 The C phase corresponds to the PFC correction voltage, while the other phases do not. In addition, Figure 5 The PFC capacitor voltage in is used to characterize the rate at which the PFC capacitor absorbs and stores voltage. Figure 6 There is no PFC correction voltage in the stage corresponding to the AC voltage, and there is a PFC correction voltage in the stage corresponding to the DC voltage.

[0098] Figure 8 A schematic diagram of the structure of a power control device according to an embodiment of the present disclosure is shown. Figure 8 As shown, a power control device includes:

[0099] The determination module 10 is used to determine the target monitoring rule corresponding to the input voltage based on the type of the input voltage; the monitoring module 11 is used to monitor the input voltage based on the target monitoring rule; the control module 12 is used to control the path for the input voltage to flow into the load to open in response to monitoring that the input voltage meets the stability condition.

[0100] In one embodiment, the control module 12 is also used for: responding to monitoring that the type of input voltage has not changed within the stable time corresponding to the input voltage; responding to monitoring that the number of consecutive frequency cycles of the same type of input voltage has reached the cycle monitoring number corresponding to the input voltage; responding to the monitoring time of the input voltage reaching the target time.

[0101] In one possible implementation, the determination module 10 is further configured to: in response to the type of the input voltage being the first type, determine that the target monitoring rule corresponding to the input voltage is the first monitoring rule;

[0102] Correspondingly, the monitoring module 11 is also used to: monitor the type of input voltage, in response to the type of input voltage remaining the first type within a first stable time corresponding to the input voltage of the first type, determine that the monitored input voltage meets the stability condition; monitor the type of input voltage in each frequency cycle, in response to the type of input voltage being the first type for a first number of consecutive frequency cycles, determine that the monitored input voltage meets the stability condition, and the first number is the number of cycle monitoring corresponding to the input voltage of the first type; in response to the monitoring time of the input voltage reaching the target time, determine that the monitored input voltage meets the stability condition.

[0103] In one embodiment, the monitoring module 11 is further configured to: in response to the root mean square value of the input voltage within a first number of consecutive frequency cycles, the difference between the root mean square value of the input voltage and the standard voltage corresponding to the first type is less than a first threshold.

[0104] In one possible implementation, the determination module 10 is further configured to: in response to the type of the input voltage being the second type, determine that the target monitoring rule corresponding to the input voltage is the second monitoring rule;

[0105] Correspondingly, the monitoring module 11 is also used to: monitor the type of input voltage, in response to the type of input voltage remaining the second type within a second stable time corresponding to the input voltage of the second type, determine that the monitored input voltage meets the stability condition; monitor the type of input voltage in each frequency cycle, in response to the type of input voltage being the second type for a second number of consecutive frequency cycles, determine that the monitored input voltage meets the stability condition, and the second number is the number of cycle monitoring corresponding to the input voltage of the second type; in response to the monitoring time of the input voltage reaching the target time, determine that the monitored input voltage meets the stability condition.

[0106] In one embodiment, the determination module 10 is also used to: in response to the input voltage value being greater than a second threshold, determine that the target monitoring rule corresponding to the input voltage is the second monitoring rule; the control module 12 is also used to: in response to the input voltage value being not greater than the second threshold, control the path for the input voltage to flow into the load to remain in a closed state; wherein the second threshold is the minimum voltage value that can ensure the normal operation of the load.

[0107] In one embodiment, the monitoring module 11 is also used to: determine the voltage change rate of the input voltage within the second stable time period, and in response to the voltage change rate being less than a third threshold, determine that the monitored input voltage meets the stability condition; determine the voltage change rate of the input voltage within the second stable time period, and in response to the voltage change rate, filter out unstable voltages so that the input voltage meets the stability condition.

[0108] In one embodiment, the control module 12 is further configured to control a relay between the power supply unit and the load to close, so that a path for the input voltage to flow into the load is opened.

[0109] In one embodiment, the determination module 10 is also used for: in response to the input voltage being in an on-state and the difference between the maximum value of the input voltage and the voltage of the target capacitor is less than a fourth threshold, then based on the type of the input voltage, determining the target monitoring rule corresponding to the input voltage, the capacity of the target capacitor is greater than a fifth threshold.

[0110] According to an embodiment of the present disclosure, the present disclosure also provides an electronic device and a readable storage medium.

[0111] Fig. 9A schematic block diagram of an example electronic device 800 that can be used to implement an embodiment of the present disclosure is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present disclosure described and / or required herein.

[0112] like Fig. 9 As shown, the device 800 includes a computing unit 801, which can perform various appropriate actions and processes according to a computer program stored in a read-only memory (ROM) 802 or a computer program loaded from a storage unit 808 into a random access memory (RAM) 803. In the RAM 803, various programs and data required for the operation of the device 800 can also be stored. The computing unit 801, the ROM 802, and the RAM 803 are connected to each other via a bus 804. An input / output (I / O) interface 805 is also connected to the bus 804.

[0113] A number of components in the device 800 are connected to the I / O interface 805, including: an input unit 806, such as a keyboard, a mouse, etc.; an output unit 807, such as various types of displays, speakers, etc.; a storage unit 808, such as a disk, an optical disk, etc.; and a communication unit 809, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 809 allows the device 800 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0114] The computing unit 801 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the computing unit 801 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various computing units running machine learning model algorithms, digital signal processors (DSPs), and any appropriate processors, controllers, microcontrollers, etc. The computing unit 801 performs the various methods and processes described above, such as a power control method. For example, in some embodiments, a power control method may be implemented as a computer software program, which is tangibly contained in a machine-readable medium, such as a storage unit 808. In some embodiments, part or all of the computer program may be loaded and / or installed on the device 800 via ROM 802 and / or communication unit 809. When the computer program is loaded into RAM 803 and executed by the computing unit 801, one or more steps of a power control method described above may be performed. Alternatively, in other embodiments, the computing unit 801 may be configured to perform a power control method in any other appropriate manner (e.g., by means of firmware).

[0115] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0116] The program code for implementing the method of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that the program code, when executed by the processor or controller, enables the functions / operations specified in the flow chart and / or block diagram to be implemented. The program code may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0117] In the context of the present disclosure, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or equipment. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or equipment, or any suitable combination of the foregoing. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0118] To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user can provide input to the computer. Other types of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0119] The systems and techniques described herein may be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, middleware components, or front-end components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), and the Internet.

[0120] A computer system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The relationship of client and server is generated by computer programs running on respective computers and having a client-server relationship with each other. The server may be a cloud server, a server of a distributed system, or a server combined with a blockchain.

[0121] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps recorded in this disclosure can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solutions disclosed in this disclosure can be achieved, and this document does not limit this.

[0122] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0123] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A power control method, comprising: Based on the type of the input voltage, determining a target monitoring rule corresponding to the input voltage; Based on the target monitoring rule, monitoring the input voltage; In response to monitoring that the input voltage meets a stable condition, a path for the input voltage to flow into a load is controlled to be opened.

2. The method according to claim 1, wherein the stable condition comprises at least one of the following: The type of the input voltage does not change within the stable time period corresponding to the input voltage; The number of consecutive frequency cycles of the same type of the input voltage reaches the number of cycle monitoring corresponding to the input voltage; The monitoring time of the input voltage reaches a target time.

3. The method according to claim 1, wherein determining the target monitoring rule corresponding to the input voltage based on the type of the input voltage comprises: In response to the type of the input voltage being the first type, determining that the target monitoring rule corresponding to the input voltage is the first monitoring rule; Accordingly, monitoring the input voltage based on the first monitoring rule includes at least one of the following: monitoring the type of the input voltage, and in response to the type of the input voltage remaining as the first type within a first stable time period corresponding to an input voltage of the first type, determining that the input voltage meets a stability condition; monitoring the type of the input voltage in each frequency cycle, and in response to the input voltage being of the first type in a first number of consecutive frequency cycles, determining that the input voltage meets a stability condition, wherein the first number is the number of cycles monitored corresponding to the input voltage of the first type; In response to the monitoring time of the input voltage reaching the target time, it is determined that the monitored input voltage meets a stability condition.

4. The method according to claim 3, wherein the response to the input voltage types in a first number of consecutive frequency cycles being all of the first type comprises: In response to the RMS values ​​of the input voltage within a first number of consecutive frequency cycles, differences between the RMS values ​​of the standard voltage corresponding to the first type are all smaller than a first threshold.

5. The method according to claim 1, wherein determining the target monitoring rule corresponding to the input voltage based on the type of the input voltage comprises: In response to the type of the input voltage being the second type, determining that the target monitoring rule corresponding to the input voltage is the second monitoring rule; Accordingly, monitoring the input voltage based on the second monitoring rule includes at least one of the following: monitoring the type of the input voltage, and in response to the type of the input voltage remaining as the second type within a second stable time period corresponding to an input voltage of the second type, determining that the input voltage meets a stability condition; monitoring the type of the input voltage in each frequency cycle, and in response to the input voltage being of the second type in a second number of consecutive frequency cycles, determining that the input voltage meets a stability condition, wherein the second number is the number of period monitoring corresponding to the second type of input voltage; In response to the monitoring time of the input voltage reaching the target time, it is determined that the monitored input voltage meets a stability condition.

6. The method according to claim 5, further comprising, after the response that the type of the input voltage is the second type: In response to the value of the input voltage being greater than a second threshold, determining that the target monitoring rule corresponding to the input voltage is a second monitoring rule; In response to the value of the input voltage being not greater than a second threshold, controlling the path through which the input voltage flows into the load to remain in a closed state; The second threshold is a minimum voltage value that can ensure the normal operation of the load.

7. The method according to claim 5, wherein the step of monitoring the input voltage based on the second monitoring rule further comprises: Determining a voltage change rate of the input voltage within the second stable time period, and in response to the voltage change rate being less than a third threshold, determining that the input voltage is monitored to meet a stable condition; A voltage change rate of the input voltage within the second stable time period is determined, and an unstable voltage is filtered out in response to the voltage change rate so that the input voltage meets a stable condition.

8. The method according to claim 1, wherein the step of controlling the path through which the input voltage flows into the load is opened comprises: A relay located between the power supply unit and the load is controlled to be closed, so that a path for the input voltage to flow into the load is opened.

9. The method according to claim 1, before determining the target monitoring rule corresponding to the input voltage based on the type of the input voltage, further comprising: In response to the input voltage being in the on-state and the difference between the maximum value of the input voltage and the voltage of the target capacitor being less than a fourth threshold, the target monitoring rule corresponding to the input voltage is determined based on the type of the input voltage, and the capacity of the target capacitor is greater than a fifth threshold.

10. A power control device, comprising: A determination module, configured to determine a target monitoring rule corresponding to the input voltage based on the type of the input voltage; A monitoring module, configured to monitor the input voltage based on the target monitoring rule; The control module is used for controlling the path for the input voltage to flow into the load to open in response to monitoring that the input voltage meets the stability condition.

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