Intelligent extension socket and control method thereof

Abstract

The invention discloses an intelligent extension socket and a control method thereof.The intelligent extension socket comprises a plurality of sockets, a plurality of relays and a power management control module, the sockets and the relays are connected in series in a one-to-one correspondence mode, and the control method is applied to the power management module and comprises the steps that when the intelligent extension socket supplies power to the outside, electrical parameter values of the sockets are obtained, and dynamically controlling the on-off of the plurality of relays according to the electrical parameter values and preset values so as to control the working states of the plurality of sockets. According to the technical scheme, electrical parameter detection and dynamic control are achieved through the relays and the power management module, the on-off state of each socket is controlled according to the real-time electrical parameter detection result, and long-time overcurrent and overload conditions are effectively prevented, so that tripping of power supply equipment is prevented, and the service life of the extension socket is prolonged.

Description

Technical Field

[0001] The present invention relates to the field of smart home technology, and in particular to a smart socket strip and a control method thereof. Background Art

[0002] In modern family life, there are many kinds of household appliances, such as air conditioners, ovens, electric kettles and other large-power appliances have become necessities for daily use. However, the rated power that traditional power strips can withstand is generally limited. Usually, one power strip connected to one appliance can work normally. When multiple high-power devices are connected to an ordinary power strip at the same time, it is easy to cause overload operation, which will then cause a series of safety hazards, including socket burnout, line overheating, and even fire. In addition, after overloading, it is easy to cause the front-end thermal circuit breaker to trip due to overload, causing all electrical appliances to fail to operate normally, and also interfere with the stability of the electrical system, affecting the user's power experience. Summary of the invention

[0003] The embodiment of the present invention provides a smart socket strip and a control method thereof to solve the above technical problems.

[0004] A first aspect of an embodiment of the present invention provides a control method for an intelligent power strip, wherein the intelligent power strip comprises a power management module, a plurality of sockets and a plurality of relays, wherein the sockets and the relays are connected in series in a one-to-one correspondence, and the power management module is connected to the plurality of relays respectively. The control method is applied to the power management module, and comprises:

[0005] When the smart power strip supplies power to the outside, obtaining electrical parameter values ​​of the multiple sockets;

[0006] The on and off of the plurality of relays are dynamically controlled according to the electrical parameter value and the preset value to control the working status of the plurality of sockets.

[0007] Optionally, when the smart power strip supplies power to the outside, obtaining electrical parameter values ​​of the multiple sockets includes:

[0008] When the smart socket strip is started, the relay is controlled to be turned on to obtain the electrical parameter value of each socket.

[0009] Optionally, the electrical parameter value is an output current value, the preset value is a preset current threshold, and the dynamically controlling the on and off of the plurality of relays according to the electrical parameter value and the preset value includes:

[0010] Controlling the on and off of the plurality of relays according to the output current value of each socket and the preset current threshold value corresponding to each socket; or,

[0011] The output current value of each socket is sorted, and the output current values ​​are superimposed in sequence from low to high in a triangular sequence to obtain multiple output current sums, and the on and off of the multiple relays are controlled according to the output current sums and the preset current threshold of the smart socket.

[0012] Optionally, dynamically controlling the on and off of the plurality of relays according to the electrical parameter value and a preset value includes:

[0013] When it is detected that the electrical parameter value changes and the relationship between the electrical parameter value and the preset value reaches a condition for a change in the working states of the plurality of sockets, the on and off states of the plurality of relays are adjusted.

[0014] Optionally, the electrical parameter value is an output current value, the preset value is a preset total current threshold, and the multiple sockets include external power supply sockets and non-external power supply sockets;

[0015] When it is detected that the electrical parameter value changes, and the relationship between the electrical parameter value and the preset value reaches the working state change condition of the plurality of sockets, adjusting the on and off states of the plurality of relays includes:

[0016] When it is detected that the total output current value of the external power supply sockets decreases, and the total output current after adding and turning on at least one non-powered socket does not exceed the preset total current threshold, the at least one non-powered socket is added and turned on, wherein the working state change conditions of the multiple sockets include: the sum of the total output current value of the external power supply sockets and the output current value of the at least one non-powered socket does not exceed the preset total current threshold.

[0017] Optionally, the electrical parameter value is an output current value, the preset value is a preset total current threshold, and the plurality of sockets include an external power supply socket;

[0018] When it is detected that the electrical parameter value changes, and the relationship between the electrical parameter value and the preset value reaches the working state change condition of the plurality of sockets, adjusting the on and off states of the plurality of relays includes:

[0019] When it is detected that the total output current value of the external power supply sockets increases and the total output current of the external power supply sockets exceeds the preset total current threshold, at least one external power supply socket is turned off, wherein the working state change condition of the multi-way socket includes: the total output current value of the external power supply sockets exceeds the preset total current threshold.

[0020] Optionally, the electrical parameter value is an output voltage value, and the preset value is a preset voltage range;

[0021] The dynamically controlling the on and off of the plurality of relays according to the electrical parameter value and the preset value to control the working state of the plurality of sockets includes:

[0022] When it is detected that the output voltage value of the socket is not within the preset voltage range, the relay is controlled to be turned off.

[0023] A second aspect of an embodiment of the present invention provides a smart power strip, including:

[0024] Multiple sockets;

[0025] A plurality of relays, wherein the relays are connected in series with the sockets in a one-to-one correspondence to control the plurality of sockets to supply power or not supply power to the outside;

[0026] A power management module is connected to each relay and is used to obtain the electrical parameter values ​​of the multiple sockets when the smart power strip supplies power to the outside, and dynamically control the on and off of the multiple relays according to the electrical parameter values ​​and preset values ​​to control the working status of the multiple sockets.

[0027] Optionally, the smart power strip further includes:

[0028] A thermal circuit breaker is connected between the power management module and an external power source and is used to disconnect when a short circuit occurs in the smart power strip.

[0029] Optionally, the smart power strip further includes:

[0030] A plurality of LED indicator lights are connected to the sockets in a one-to-one correspondence and are used to indicate the output status of the connected sockets.

[0031] The technical effect of the embodiment of the present invention is as follows: the intelligent power strip realizes electrical parameter detection and dynamic control through multiple relays and power management modules, controls the on and off status of each socket according to the real-time electrical parameter detection results, effectively prevents long-term overcurrent and overload conditions, and extends the service life of the equipment and the power strip. At the same time, the control method of the intelligent power strip can protect the front-stage power supply line, avoid frequent operation of the front-stage power supply protection device, prevent power users from causing global power outages due to a certain socket load problem, and improve the safety and stability of the overall power system. The use of the intelligent power strip and its control method can enable users to use power supply for multiple devices efficiently and safely, thereby improving power safety and system reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0033] Figure 1 This is a first structural diagram of a smart socket provided in Embodiment 1 of the present invention;

[0034] Figure 2 is a flow chart of a control method of a smart socket strip provided in Embodiment 1 of the present invention;

[0035] Figure 3 This is a second structural diagram of a smart socket provided in Embodiment 2 of the present invention;

[0036] Figure 4 This is a third structural diagram of a smart power strip provided by Embodiment 2 of the present invention;

[0037] Figure 5 This is a fourth structural diagram of a smart power strip provided by Embodiment 2 of the present invention;

[0038] In the figure: 101, socket; 102, relay; 103, power management module; 104, MCU; 105, thermal circuit breaker; 106, LED indicator light; 107, step-down module; 108, LED power supply module; 109, power management chip; 110, voltage conversion module. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] It should be understood that the present invention can be implemented in different forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, providing these embodiments will make the disclosure thorough and complete and fully convey the scope of the present invention to those skilled in the art. In the accompanying drawings, the sizes and relative sizes of layers and regions may be exaggerated for clarity. The same reference numerals throughout represent the same elements.

[0041] It should be understood that when an element or layer is referred to as being "on, adjacent to, connected to or coupled to other elements or layers, it may be directly on, adjacent to, connected to or coupled to other elements or layers, or there may be intervening elements or layers. In contrast, when an element is referred to as being "directly on, directly adjacent to, directly connected to or directly coupled to other elements or layers, there may be no intervening elements or layers. It should be understood that, although the terms first, second, third, etc. may be used to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the teachings of the present invention, the first element, component, region, layer or part discussed below may be represented as a second element, component, region, layer or part.

[0042] The purpose of the terms used herein is only to describe specific embodiments and is not intended to be limiting of the present invention. When used herein, the singular forms "one", "an" and "said / the" are also intended to include plural forms, unless the context clearly indicates another way. It should also be understood that the terms "consisting of" and / or "comprising", when used in this specification, determine the presence of features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups. When used herein, the term "and / or" includes any and all combinations of the relevant listed items.

[0043] In order to fully understand the present invention, detailed structures and steps will be presented in the following description to illustrate the technical solutions proposed by the present invention. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other implementations.

[0044] Embodiment 1

[0045] This embodiment 1 provides a control method for an intelligent power strip, such as Figure 1 As shown, the smart power strip includes a power management module 103, multiple sockets 101 and multiple relays 102. The sockets 101 and the relays 102 are connected in series one by one. The power management module 103 is connected to the multiple relays 102 respectively. Figure 2 As shown, the control method is applied to the power management module 103, including:

[0046] Step S101. When the smart power strip supplies power to the outside, electrical parameter values ​​of multiple sockets are obtained.

[0047] Step S102: Dynamically control the on and off of multiple relays according to the electrical parameter values ​​and preset values ​​to control the working states of multiple sockets.

[0048] Among them, the socket 101 is connected to an external electrical appliance to provide an electricity interface for the user. A socket 101 and a relay 102 connected thereto form a power supply branch. When the relay 102 is turned on, the socket 101 is in a power supply state; when the relay 102 is turned off, the socket 101 stops supplying power. The relay 102 controls the on-off state of the socket 101, and its on or off is controlled by the power management module 103. The power management module 103 provides current to each relay 102 to ensure that the relay 102 can supply power normally when it is turned on. The power management module 103 inputs power to each relay 102, and the relay 102 also provides stable power to each socket 101 through the instructions of the power management module 103. If a socket 101 needs to be powered off, the power management module 103 controls the corresponding relay 102 to be disconnected. The power management module 103 is the core control unit of the intelligent power strip, which detects the electrical parameter value of each socket 101, determines the power supply demand of the socket 101, and controls the on-state of the relay 102.

[0049] Among them, in step S101, the external power supply of the smart power strip can be temporary external power supply or continuous external power supply, as long as there is output current, for example, the current output when the relay is switched on and off, or the current output when the relay is continuously turned on. When the smart power strip supplies power to the outside, the electrical parameter value of each socket is collected to determine the actual power consumption status of each socket. The electrical parameter value can be a parameter value such as voltage, current, power, etc. The power management module samples the real-time electrical parameter value of each socket and analyzes these data.

[0050] Among them, in step S102, dynamically adjusting the on-off state of multiple relays according to the electrical parameter value and the preset current value means comparing the collected electrical parameter value with the preset threshold value, and dynamically adjusting the relay state according to the comparison result, so as to control the working state of the socket to supply power to the outside or not supply power to the outside. If the current or voltage of a socket exceeds the preset value (such as current overload or voltage abnormality), the power management module will control the corresponding relay to disconnect and cut off the power supply. If the electrical parameters of a socket return to normal and the total load allows, the power management module can reclose the relay and restore power supply.

[0051] Among them, dynamically adjusting the on and off states of multiple relays according to the electrical parameter values ​​and the preset current values ​​includes but is not limited to the following methods:

[0052] 1. Current limiting protection control mode: When the output current of a socket exceeds the preset safety threshold (such as 10A), the relay of the socket will be automatically turned off to prevent overload risks. This method can effectively prevent safety hazards such as circuit overheating, damage or fire caused by overload of the socket, ensuring the safety of electricity use.

[0053] 2. Load optimization control mode: Calculate the total current of all sockets. If the total current exceeds the set upper limit (such as 15A), the socket with the smallest or largest load will be removed first until the total current returns to a safe range. Through intelligent control, the optimal load distribution of multiple sockets can be achieved without exceeding the total load limit, improving the safety and stability of the system.

[0054] 3. Staged conduction control: When it is detected that the current of a certain socket is low and the total current is lower than the threshold, the number of sockets to be turned on will be gradually increased. For example, when I1+I2+I3<10A and I1+I2+I3+I4<15A, the relays corresponding to I1, I2, I3 and I4 can be turned on step by step. This staged conduction control can ensure that the load is gradually increased without exceeding the current limit, providing flexible current distribution and energy-saving management strategies.

[0055] 4. Triangle sequence conduction control method: When the current of a socket is detected to be low and the total current is lower than the threshold, the number of sockets to be turned on is gradually increased. For example, when I1+I2+I3<10A and I1+I2+I3+I4<15A, the relays corresponding to I1, I2, I3 and I4 can be turned on.

[0056] 5. Voltage detection control method: When the voltage of a socket is detected to be overvoltage or undervoltage, the voltage of the smart socket is determined to be abnormal. Since the sockets are connected in parallel, the entire smart socket is turned off at this time.

[0057] The technical effect of the technical solution provided in the first embodiment is that the intelligent power strip realizes precise current management and dynamic control through multiple relays and power management modules, has the function of electrical parameter detection, and can provide multiple safety protections such as overcurrent / overload protection and short circuit protection. In terms of intelligent time-sharing power management, the conduction state of each socket can be controlled according to the real-time detection results, effectively preventing long-term overcurrent and overload conditions, and extending the service life of the equipment and the power strip. At the same time, the control method of the intelligent power strip can protect the front-stage power supply line, avoid the frequent operation of the front-stage power supply protection device, prevent the power user from causing a global power outage due to a certain socket load problem, and improve the safety and stability of the overall power system. This intelligent power strip and its control method enable users to use multiple devices to power efficiently and safely, improving power safety and system reliability.

[0058] As an implementation of step S101, when the smart power strip supplies power to the outside, obtaining electrical parameter values ​​of multiple sockets includes:

[0059] When the smart socket strip is started, the control relay is turned on to obtain the electrical parameter values ​​of each socket.

[0060] Among them, when the smart power strip is connected to the power supply, the electrical parameters of each socket are detected. Optionally, in this embodiment, when the smart power strip is powered on, each relay is controlled to be turned on to obtain the electrical parameter value of each socket, and then the on and off of each relay is dynamically controlled according to the electrical parameter value of each socket and the preset value. The conduction state of each relay can also be controlled one by one in sequence to ensure that only one socket is connected to the power management module at a time.

[0061] During the relay conduction period, the power management module supplies power to the socket corresponding to the relay. When a socket is turned on through its corresponding relay, the power management module collects the electrical parameters of the socket (such as voltage, current, power, etc.). The collected electrical parameter values ​​will be stored for subsequent analysis and control.

[0062] In the case of one-by-one detection, when the smart power strip is started, each relay is controlled to be turned on and off separately. After the electrical parameter collection is completed, the current relay is turned off, and then the same operation is performed on the next relay, and each socket is tested in turn until the electrical parameter values ​​of all sockets are collected. The technical effect of this embodiment is that only one socket is turned on at a time, which can ensure that the collected electrical parameters are not interfered by other sockets, improve the detection accuracy, provide a reliable data basis for the working status of each socket, and help the subsequent dynamic management, especially provide a basis for subsequent intelligent control (such as overload protection, dynamic current distribution), and improve the intelligence level of the power strip.

[0063] As an implementation mode, the electrical parameter value is an output current value, and the preset value is a preset current threshold. In step S102, the on and off of multiple relays are dynamically controlled according to the electrical parameter value and the preset value, including:

[0064] Controlling the on and off of multiple relays according to the output current value of each socket and the preset current threshold value corresponding to each socket; or,

[0065] The output current value of each socket is sorted, and the output current values ​​are superimposed in sequence from low to high in a triangular sequence to obtain multiple output current sums, and the on-off states of multiple relays are adjusted according to the output current sum and the preset current threshold of the smart socket.

[0066] In this embodiment, the on and off of multiple relays are dynamically controlled according to the output current value and the preset current threshold.

[0067] As an optional implementation, the output current value of each socket is collected: I1, I2, I3 to I N When the output current value of a socket exceeds the preset current threshold value corresponding to the socket (such as 5A), the relay of the socket will be automatically turned off to prevent the risk of overload.

[0068] As another optional implementation, the output current value of each socket is collected: I1, I2, I3 to I N , sort the collected current values ​​in ascending order, for example, the sorting sequence is: I MIN , I2, I3 to I MAX The sorting results are used for subsequent current and calculations to ensure that more low-load sockets are given priority in power supply. The sorted current values ​​are superimposed from small to large. The first step is: S1 = I MIN ; The second step superposition is: S2 = I MIN +I2; the third step is superposition: S3=I MIN +I2+I3; and so on, until all the superimposed currents and S are obtained N Compare the superimposed current and the preset current threshold of the smart power strip (the preset current threshold of the smart power strip is also referred to as the preset total current threshold in at least some embodiments of the present application), compare each superimposed current and the set total current threshold (for example, 15A), and if S N is less than or equal to the preset total current threshold, and S N+1 If the total current is greater than the preset threshold, S N The N relays corresponding to the sockets are in the on state, and the remaining relays are disconnected. Based on the judgment result between the superimposed current and the preset total current threshold, a switch command is issued to the relay to keep the sockets with smaller loads powered, disconnect the sockets with overloaded loads, or dynamically adjust the number of sockets that are turned on according to power demand.

[0069] The technical effect of this embodiment is that by controlling the conduction state of the relay, the socket current is dynamically adjusted to ensure the rationality and safety of the current distribution. At the same time, the risk of current overload is reduced, and the circuit and connected equipment are effectively protected. This control method achieves a reasonable distribution of the output current of the smart power strip through steps such as sorting, forming a triangle sequence superposition, and dynamically controlling the relay, avoiding the risks that may be caused by current mutations, and improving the safety and stability of the entire smart power strip during use.

[0070] As an implementation mode, in step S102, dynamically controlling the on and off of multiple relays according to the electrical parameter value and the preset value includes:

[0071] When it is detected that the electrical parameter value changes, and the relationship between the electrical parameter value and the preset value reaches a condition for a change in the working states of the plurality of sockets, the on-off states of the plurality of relays are adjusted.

[0072] Among them, the electrical parameters (such as current, voltage, power, etc.) of each socket are collected in real time, and the real-time data is compared with the previously collected data to determine whether the electrical parameter value has changed. When the electrical parameter value changes, the collected real-time electrical parameter value is compared with the preset threshold value (such as overcurrent threshold, undervoltage threshold, overvoltage threshold, etc.). If the relationship between the electrical parameter value and the preset value reaches the trigger condition (for example, exceeding the overcurrent threshold, undervoltage threshold, overvoltage threshold, etc.), the working state of the socket is re-evaluated, and according to the change of the electrical parameter and the comparison result with the preset value, which sockets need to maintain power supply, increase power supply or stop power supply are re-evaluated, and the switch state of the relay is determined according to the current total current load or the abnormal situation of a single socket. Adjust the on-off state of multiple relays, and send a control signal to the corresponding relay according to the result of the re-evaluation: if a socket is overloaded, disconnect its relay and cut off the power supply. If the total current load is reduced and does not exceed the limit, open the relays of other sockets to restore power supply. If the socket is detected to be unloaded or abnormal, keep it disconnected.

[0073] The technical effect of this implementation is that when the electrical parameters of the socket change, timely response to situations such as overcurrent, undervoltage, overvoltage, short circuit, etc. is achieved, equipment damage and line overheating are avoided, and safe operation under various dynamic load conditions is guaranteed. At the same time, the power supply status of the smart power strip is dynamically adjusted to maximize the use of the power supply capacity of the smart power strip to meet the power supply needs of more devices. Priority is given to ensuring the power supply of low-load or critical equipment, optimizing the distribution of electric energy, and being able to intelligently adjust according to equipment requirements and circuit status without manual operation by the user, providing stable power supply services, and reducing equipment power outages caused by overload or abnormalities. Avoid frequent action of the front-stage power supply line due to local overload, and extend the service life of the system and connected equipment. Through the above steps, the system can realize intelligent regulation of the socket, ensure safe, efficient and intelligent use of electricity, and provide a safe and reliable solution for multi-socket power supply systems.

[0074] As an implementation manner, the electrical parameter value is an output current value, the preset value is a preset total current threshold, and the multiple sockets include external power supply sockets and non-external power supply sockets.

[0075] When it is detected that the electrical parameter value changes, and the relationship between the electrical parameter value and the preset value reaches a condition for a change in the working state of the plurality of sockets, adjusting the on / off state of the plurality of relays includes:

[0076] When it is detected that the total output current value of the external power supply sockets decreases, and the total output current after adding and connecting at least one non-powered socket does not exceed the preset total current threshold, at least one non-powered socket is added and connected, wherein the working state change conditions of the multiple sockets include: the sum of the total output current value of the external power supply sockets and the output current value of at least one non-powered socket does not exceed the preset total current threshold.

[0077] Among them, the total output current value of all external power supply sockets is monitored in real time, the current power supply status is analyzed, and the real-time current value changes are recorded to determine whether the output current value of any socket has decreased. When the total output current value of a certain external power supply socket is detected to have decreased, the current total output current is calculated, the remaining power supply capacity is estimated with the output current value of the unpowered socket, and it is determined whether the working status change conditions of multiple sockets are met:

[0078] I 总 +I 未 ≤I 阈 ;

[0079] Among them, I 总 is the total output current value of the external power supply socket, I 未 is the output current value of the unpowered socket, I 阈 is the preset total current threshold. If this condition is met, choose to add an unpowered socket to be turned on, select an unpowered socket that meets the conditions, and the power management module sends a command to turn on the relay of the corresponding socket to make it supply power to the outside. At the same time, the list of power sockets is updated and the current value of the newly added power sockets is continuously monitored. After the newly added socket starts to supply power, continue to monitor its output current value to ensure that there is no overload. If the actual output current value of the newly added socket exceeds expectations or the total current exceeds the threshold, the power supply status can be readjusted, including disconnecting some sockets.

[0080] The technical effect of this implementation is that when the power load connected to the current power socket decreases, more unpowered sockets can be automatically turned on to meet the user's demand for powering multiple devices at the same time. According to the real-time monitored output current value, the working status of the sockets is dynamically allocated to optimize the power supply efficiency of the strip, ensuring that when more unpowered sockets are turned on, the total current will not exceed the preset threshold, thereby avoiding damage to the power sockets due to overload.

[0081] As an implementation mode, the electrical parameter value is an output current value, the preset value is a preset total current threshold, and the multiple sockets include an external power supply socket.

[0082] When it is detected that the electrical parameter value changes, and the relationship between the electrical parameter value and the preset value reaches a condition for a change in the working state of the plurality of sockets, the on-off state of the plurality of relays is adjusted, including:

[0083] When it is detected that the total output current value of the external power supply sockets increases and the total output current of the external power supply sockets exceeds a preset total current threshold, at least one external power supply socket is turned off, wherein the working state change condition of the multi-way socket includes: the total output current value of the external power supply sockets exceeds the preset total current threshold.

[0084] Among them, the total output current value of all external power supply sockets is monitored in real time, the current power supply status is analyzed, and the real-time current value changes are recorded to determine whether the output current value of any socket has increased. When the total output current value of a certain external power supply socket is detected to have increased, the current total output current is calculated, and the current total output current is compared with the preset total current threshold to determine whether the working status change conditions of multiple sockets are met:

[0085] I 总 >I 阈 ;

[0086] Among them, I 总 is the total output current value of the external power socket, I 阈 is the preset total current threshold.

[0087] If I 总 ≤I 阈值 If I 总 >I 阈值 When the total output current value is detected to be overloaded, it will be determined according to the following rules that at least one socket needs to be turned off: the sockets with increased current values ​​will be turned off first to quickly reduce the load; or the sockets with the largest current value will be turned off. A disconnect signal is sent to the relay of the selected socket, and after the corresponding socket is turned off, the total output current is recalculated. After the adjustment is completed, the socket status changes are recorded and the user is prompted which sockets have been turned off through indicator lights or other means. If the total load returns to normal and there is spare capacity, some sockets can be reopened as needed.

[0088] The technical effect of this embodiment is that when it is detected that the total output current value of the external power supply socket increases and the total output current exceeds a preset threshold, the total load is quickly reduced by shutting down at least one socket to prevent equipment damage or safety accidents caused by overload, and the sockets with increased current values ​​or the largest current values ​​are shut down first, so that the total output current of the smart power strip can quickly return to a safe range, while retaining normal power supply to low-load sockets, thereby optimizing resource allocation.

[0089] As an implementation mode, the electrical parameter value is an output voltage value, and the preset value is a preset voltage range;

[0090] Dynamically control the on and off of multiple relays according to electrical parameter values ​​and preset values, including:

[0091] When it is detected that the output voltage value of the socket is not within the preset voltage range, the control relay is turned off.

[0092] Among them, the output voltage value V of the socket is collected in real time OUT , and the preset voltage range [V MIN , V MAX 】Compare, if it detects VOUT <V MIN or V OUT >V MAX , the voltage is determined to be abnormal, and the power management module will enter the shutdown logic; if V MIN ≤V OUT ≤V MIN When the voltage value is detected to be beyond the preset range, the control module sends a shutdown command to the relay of the smart power strip. After the relay is turned off, the smart power strip will stop supplying power to prevent the abnormal voltage from further affecting the equipment or power supply system.

[0093] The technical effect of this implementation is: through real-time detection and shutting down of abnormal sockets, equipment damage, unstable power supply or circuit overheating caused by undervoltage or overvoltage can be prevented. Through the above steps, accurate detection and rapid response to abnormal voltage are achieved, and a voltage protection function is provided for the smart power strip, ensuring safe operation of the equipment while optimizing the user experience.

[0094] Embodiment 2

[0095] The present invention provides a smart power strip according to the second embodiment. Figure 1 As shown, including:

[0096] A plurality of sockets 101;

[0097] A plurality of relays 102, the relays 102 are connected in series with the sockets 101 in a one-to-one correspondence, so as to control the plurality of sockets 101 to supply power or not supply power to the outside;

[0098] The power management module 103 is connected to each relay 102 and is used to obtain the electrical parameter values ​​of multiple sockets 101 when the smart power strip supplies power to the outside, and dynamically control the on and off of multiple relays 102 according to the electrical parameter values ​​and preset values ​​to control the working status of multiple sockets 101.

[0099] Among them, the socket 101 is connected to an external electrical appliance to provide an electricity interface for the user. A socket 101 and a relay 102 connected thereto form a power supply branch. When the relay 102 is turned on, the socket 101 is in a power supply state; when the relay 102 is turned off, the socket 101 stops supplying power. The relay 102 controls the on-off state of the socket 101, and its on or off is controlled by the power management module 103. The power management module 103 provides current to each relay 102 to ensure that the relay 102 can supply power normally when it is turned on. The power management module 103 inputs power to each relay 102, and the relay 102 also provides stable power to each socket 101 through the instructions of the power management module 103. If a socket 101 needs to be powered off, the power management module 103 controls the corresponding relay 102 to be disconnected. The power management module 103 is the core control unit of the intelligent power strip, which detects the current situation of each socket 101, determines the power supply demand of the socket 101, and controls the on-state of the relay 102.

[0100] The smart power strip can provide power to the outside world temporarily or continuously, as long as there is output current, for example, the current output when the relay is switched on and off, or the current output when the relay is continuously turned on. When the smart power strip provides power to the outside world, the electrical parameter value of each socket is collected to determine the actual power consumption status of each socket. The electrical parameter value can be a parameter value such as voltage, current, and power. The power management module samples the real-time electrical parameter value of each socket and analyzes the data.

[0101] Among them, dynamically adjusting the on / off status of multiple relays according to the electrical parameter value and the preset current value means comparing the collected electrical parameter value with the preset threshold value, and dynamically adjusting the relay state according to the comparison result, so as to control the working state of the socket to supply power to the outside or not supply power to the outside. If the current or voltage of a socket exceeds the preset value (such as current overload or voltage abnormality), the power management module will control the corresponding relay to disconnect and cut off the power supply. If the electrical parameters of a socket return to normal and the total load allows, the power management module can reclose the relay and restore power supply.

[0102] Among them, dynamically adjusting the on and off states of multiple relays according to the electrical parameter values ​​and the preset current values ​​includes but is not limited to the following methods:

[0103] 1. Current limiting protection control mode: When the output current of a socket exceeds the preset safety threshold (such as 10A), the relay of the socket will be automatically turned off to prevent overload risks. This method can effectively prevent safety hazards such as circuit overheating, damage or fire caused by overload of the socket, ensuring the safety of electricity use.

[0104] 2. Load optimization control mode: Calculate the total current of all sockets. If the total current exceeds the set upper limit (such as 15A), the socket with the smallest or largest load will be removed first until the total current returns to a safe range. Through intelligent control, the optimal load distribution of multiple sockets can be achieved without exceeding the total load limit, improving the safety and stability of the system.

[0105] 3. Staged conduction control: When it is detected that the current of a certain socket is low and the total current is lower than the threshold, the number of sockets to be turned on will be gradually increased. For example, when I1+I2+I3<10A and I1+I2+I3+I4<15A, the relays corresponding to I1, I2, I3 and I4 can be turned on step by step. This staged conduction control can ensure that the load is gradually increased without exceeding the current limit, providing flexible current distribution and energy-saving management strategies.

[0106] 4. Triangle sequence conduction control method: When the current of a socket is detected to be low and the total current is lower than the threshold, the number of sockets to be turned on is gradually increased. For example, when I1+I2+I3<10A and I1+I2+I3+I4<15A, the relays corresponding to I1, I2, I3 and I4 can be turned on.

[0107] 5. Voltage detection control method: When the voltage of a socket is detected to be overvoltage or undervoltage, the voltage of the smart socket is determined to be abnormal. Since the sockets are connected in parallel, the entire smart socket is turned off at this time.

[0108] The technical effect of the technical solution provided in the second embodiment is that the intelligent power strip realizes precise current management and dynamic control through multiple relays and power management modules, has the function of electrical parameter detection, and can provide multiple safety protections such as overcurrent / overload protection and short-circuit protection. In terms of intelligent time-sharing power management, the conduction state of each socket can be controlled according to the real-time detection results, effectively preventing long-term overcurrent and overload conditions, and extending the service life of the equipment and the power strip. At the same time, the control method of the intelligent power strip can protect the front-stage power supply line, avoid the frequent operation of the front-stage power supply protection device, prevent the power user from causing a global power outage due to a certain socket load problem, and improve the safety and stability of the overall power system. This intelligent power strip and its control method enable users to use multiple devices to power efficiently and safely, improving power safety and system reliability.

[0109] As an implementation manner, the power management module 103 is also used to control each relay 102 to be turned on and off individually when the smart power strip is started, so as to obtain the electrical parameter value of each socket 103.

[0110] Among them, when the smart power strip is connected to the power supply, the power management module 103 starts to detect the electrical parameters of each socket one by one, and controls the conduction state of each relay 102 one by one in sequence to ensure that only one socket 101 is connected to the power management module 103 at a time. During the conduction of the relay, the power management module 103 supplies power to the socket 101 corresponding to the relay 102. When a socket is turned on through its corresponding relay 102, the power management module 103 collects the electrical parameters (such as voltage, current, power, etc.) of the socket 101. The collected electrical parameter values ​​will be stored for subsequent analysis and control. After completing the electrical parameter collection, turn off the current relay, and then start to perform the same operation on the next relay, testing each socket in turn until the electrical parameter values ​​of all sockets are collected.

[0111] It should be noted that the time for the relay to be turned off after being turned on alone is short (3 to 5 seconds). Even if a single electrical parameter value exceeds the threshold, it will not trigger abnormal protection such as short circuit or cause damage.

[0112] The technical effect of this implementation is that only one socket is turned on at a time, which can ensure that the collected electrical parameters are not interfered with by other sockets, improve detection accuracy, provide a reliable data basis for the working status of each socket, and facilitate subsequent dynamic management, especially provide a basis for subsequent intelligent control (such as overload protection, dynamic current distribution), thereby improving the intelligence level of the power strip.

[0113] As an implementation mode, the electrical parameter value is the output current value, the preset value is a preset total current threshold, and the power management module 103 is also used to sort the output current of each socket, superimpose the output currents in sequence from low to high in a triangular sequence to obtain multiple output current sums, and adjust the on and off states of multiple relays according to the output current sum and the preset total current threshold.

[0114] Among them, the output current value of each socket is collected: I1, I2, I3 to I N , sort the collected current values ​​in ascending order, for example, the sorting sequence is: I MIN , I2, I3 to I MAX The sorting results are used for subsequent current and calculations to ensure that more low-load sockets are given priority in power supply. The sorted current values ​​are superimposed from small to large. The first step is: S1 = I MIN ; The second step superposition is: S2 = I MIN +I2; the third step is superposition: S3=I MIN +I2+I3; and so on, until all the superimposed currents and S are obtained N. Compare the superimposed current and the preset total current threshold, and compare each superimposed current and the set total current threshold (for example, 15A). If S N is less than or equal to the preset total current threshold, and S N+1 If the total current is greater than the preset threshold, S N The N relays corresponding to the sockets are in the on state, and the remaining relays are disconnected. Based on the judgment result between the superimposed current and the preset total current threshold, a switch command is issued to the relay to keep the sockets with smaller loads powered, disconnect the sockets with overloaded loads, or dynamically adjust the number of sockets that are turned on according to power demand.

[0115] The technical effect of this embodiment is that by controlling the conduction state of the relay, the socket current is dynamically adjusted to ensure the rationality and safety of the current distribution. At the same time, the risk of current overload is reduced, and the circuit and connected equipment are effectively protected. This control method achieves a reasonable distribution of the output current of the smart power strip through steps such as sorting, forming a triangle sequence superposition, and dynamically controlling the relay, avoiding the risks that may be caused by current mutations, and improving the safety and stability of the entire smart power strip during use.

[0116] As an implementation manner, the power management module 103 is also used to adjust the on and off states of multiple relays when a change in the electrical parameter value is detected and the relationship between the electrical parameter value and the preset value reaches a condition for a change in the working states of multiple sockets.

[0117] Among them, the power management module 103 collects the electrical parameters (such as current, voltage, power, etc.) of each socket 101 in real time, compares the real-time data with the previously collected data, and determines whether the electrical parameter value has changed. When the electrical parameter value changes, the collected real-time electrical parameter value is compared with the preset threshold value (such as overcurrent threshold, undervoltage threshold, overvoltage threshold, etc.). If the relationship between the electrical parameter value and the preset value reaches the trigger condition (for example, exceeding the overcurrent threshold, undervoltage threshold, overvoltage threshold, etc.), the working state of the socket is re-evaluated, and according to the change of the electrical parameter and the comparison result with the preset value, which sockets need to maintain power supply, increase power supply or stop power supply are re-evaluated, and the switch state of the relay is determined according to the current total current load or the abnormal situation of a single socket. Adjust the on-off state of multiple relays, and send a control signal to the corresponding relay according to the result of the re-evaluation: if a socket is overloaded, disconnect its relay and cut off the power supply. If the total current load is reduced and does not exceed the limit, open the relays of other sockets to restore power supply. If the socket is detected to be unloaded or abnormal, keep it disconnected.

[0118] The technical effect of this implementation is that when the electrical parameters of the socket change, timely response to situations such as overcurrent, undervoltage, overvoltage, short circuit, etc. is achieved, equipment damage and line overheating are avoided, and safe operation under various dynamic load conditions is guaranteed. At the same time, the power supply status of the smart power strip is dynamically adjusted to maximize the use of the power supply capacity of the smart power strip to meet the power supply needs of more devices. Priority is given to ensuring the power supply of low-load or critical equipment, optimizing the distribution of electric energy, and being able to intelligently adjust according to equipment requirements and circuit status without manual operation by the user, providing stable power supply services, and reducing equipment power outages caused by overload or abnormalities. Avoid frequent action of the front-stage power supply line due to local overload, and extend the service life of the system and connected equipment. Through the above steps, the system can realize intelligent regulation of the socket, ensure safe, efficient and intelligent use of electricity, and provide a safe and reliable solution for multi-socket power supply systems.

[0119] As an implementation manner, the electrical parameter value is an output current value, the preset value is a preset total current threshold, and the multiple sockets include external power supply sockets and non-external power supply sockets.

[0120] The power management module 103 is also used to add and turn on at least one non-powered socket when it is detected that the total output current value of the external power supply socket is reduced and the total output current after adding and turning on at least one non-powered socket does not exceed a preset total current threshold, wherein the working state change conditions of the multiple sockets include: the sum of the total output current value of the external power supply socket and the output current value of at least one non-powered socket does not exceed the preset total current threshold.

[0121] Among them, the total output current value of all external power supply sockets is monitored in real time, the current power supply status is analyzed, and the real-time current value changes are recorded to determine whether the output current value of any socket has decreased. When the total output current value of a certain external power supply socket is detected to have decreased, the current total output current is calculated, the remaining power supply capacity is estimated with the output current value of the unpowered socket, and it is determined whether the working status change conditions of multiple sockets are met:

[0122] I 总 +I 未供电 ≤I 阈值 ;

[0123] If the condition is met, the system will choose to add an unpowered socket, select an unpowered socket that meets the condition, and the power management module will send a command to turn on the relay of the corresponding socket to supply power to the outside. At the same time, the list of power sockets will be updated and the current value of the newly added power socket will be continuously monitored. After the newly added socket starts to supply power, its output current value will continue to be monitored to ensure that there is no overload. If the actual output current value of the newly added socket exceeds expectations or the total current exceeds the threshold, the power supply status can be readjusted, including disconnecting some sockets.

[0124] The technical effect of this implementation is that when the power load connected to the current power socket decreases, more unpowered sockets can be automatically turned on to meet the user's demand for powering multiple devices at the same time. According to the real-time monitored output current value, the working status of the sockets is dynamically allocated to optimize the power supply efficiency of the strip, ensuring that when more unpowered sockets are turned on, the total current will not exceed the preset threshold, thereby avoiding damage to the power sockets due to overload.

[0125] As an implementation mode, the electrical parameter value is an output current value, the preset value is a preset total current threshold, and the multiple sockets include an external power supply socket.

[0126] The power management module 103 is also used to shut down at least one external power supply socket when it is detected that the total output current value of the external power supply socket increases and the total output current of the external power supply socket exceeds a preset total current threshold, wherein the working state change condition of the multi-way socket includes: the total output current value of the external power supply socket exceeds the preset total current threshold.

[0127] Among them, the total output current value of all external power supply sockets is monitored in real time, the current power supply status is analyzed, and the real-time current value changes are recorded to determine whether the output current value of any socket has increased. When the total output current value of a certain external power supply socket is detected to have increased, the current total output current is calculated, and the current total output current is compared with the preset total current threshold to determine whether the working status change conditions of multiple sockets are met:

[0128] I 总 >I 阈值 ;

[0129] If I 总 ≤I 阈值 If I 总 >I 阈值 When the total output current is detected to be overloaded, at least one socket will be shut down according to the following rules: the sockets with increased current values ​​will be shut down first to quickly reduce the load; or the sockets with the largest current value will be shut down. A disconnect signal is sent to the relay of the selected socket, and after the corresponding socket is shut down, the total output current is recalculated. After the adjustment is completed, the socket status changes are recorded and the user is informed of which sockets have been shut down through indicators or other means. If the total load returns to normal and there is spare capacity, some sockets can be reopened as needed.

[0130] The technical effect of this embodiment is that when it is detected that the total output current value of the external power supply socket increases and the total output current exceeds the preset threshold, the total load is quickly reduced by shutting down at least one to prevent equipment damage or safety accidents caused by overload, and the sockets with increased current values ​​or the largest current values ​​are shut down first, so that the total output current of the smart power strip can quickly return to a safe range, while retaining normal power supply to low-load sockets, thereby optimizing resource allocation.

[0131] As an implementation mode, the electrical parameter value is an output voltage value, and the preset value is a preset voltage range; the power management module 103 is also used to control the relay to shut down when it is detected that the output voltage value of the socket is not within the preset voltage range.

[0132] The power management module 103 collects the output voltage value V of the socket in real time. OUT , and the preset voltage range [V MIN , V MAX 】Compare, if it detects V OUT <V MIN or V OUT >V MAX , the voltage is determined to be abnormal, and the power management module will enter the shutdown logic; if V MIN ≤V OUT ≤V MIN When the voltage value is detected to be beyond the preset range, the control module sends a shutdown command to the relay of the smart power strip. After the relay is turned off, the smart power strip will stop supplying power to prevent the abnormal voltage from further affecting the equipment or power supply system.

[0133] The technical effect of this implementation is: through real-time detection and shutting down of abnormal sockets, equipment damage, unstable power supply or circuit overheating caused by undervoltage or overvoltage can be prevented. Through the above steps, accurate detection and rapid response to abnormal voltage are achieved, and a voltage protection function is provided for the smart power strip, ensuring safe operation of the equipment while optimizing the user experience.

[0134] As an implementation method, Figure 3 As shown, the smart power strip also includes:

[0135] The thermal circuit breaker 105 is connected between the power management module 103 and the external power supply, and is used to disconnect when a short circuit occurs in the smart power strip.

[0136] The thermal circuit breaker 105 is installed between the power management module 103 and the external power supply, and is mainly used to detect short circuits. A manually resettable thermal circuit breaker 105 is connected to the line inlet of the socket, providing a second level of protection. When a short circuit occurs in the electrical appliance and the primary protection cannot fully respond, the thermal circuit breaker 105 will act quickly to disconnect the line inlet circuit.

[0137] The technical effect of this embodiment is that this double protection ensures that even if the protection inside the smart power strip does not respond in time or fails, the thermal circuit breaker can still quickly cut off the power supply to prevent the current from further entering the power strip, providing higher safety protection. At the same time, the manually reset design makes it convenient for users to reopen the circuit after troubleshooting. Even if the power management module and the relay do not respond fast enough, the thermal circuit breaker will quickly cut off the circuit to form secondary protection. Even if the electrical appliances in the power strip are short-circuited, the power system will not trip, preventing large-scale power outages caused by short-circuiting of the smart power strip and ensuring the normal power supply of other electrical appliances.

[0138] As an implementation method, Figure 4 As shown, the smart power strip also includes: a plurality of LED indicator lights 106 , each LED indicator light 106 correspondingly connected to a socket 101 , and used to indicate the output status of the connected socket 101 .

[0139] Among them, in the smart power strip, multiple LED indicator lights 106 are used to indicate the working status of each socket 101, so that the user can quickly understand the current output of each socket 101. The power management module 103 of the smart power strip detects the output current of each socket 101 in real time. When a socket 101 starts to output current, the power management module 103 will send a lighting signal to the corresponding LED indicator light 106 to remind the user that the socket 101 is supplying power. On the contrary, when the socket 101 stops outputting current, the power management module 103 will turn off the corresponding LED indicator light 106 to indicate that the current socket 101 is in a non-working state.

[0140] Optionally, in this embodiment, the multiple LED indicator lights may be multi-color LED indicator lights, which indicate the working status and overload degree and other information of the socket through different colors and / or different color depths, so that the user can intuitively understand the operation status of the socket.

[0141] The technical effect of this implementation is that through the on and off status of the LED indicator, the user can quickly determine the working status of each socket, avoid plugging and unplugging devices when the power is on, and thus reduce the safety hazards caused by misoperation. This design not only allows users to intuitively understand the use of the socket, facilitates safe electricity use and energy-saving management, but also improves the user experience of the smart power strip and enhances the convenience and safety of operation.

[0142] The present embodiment is specifically described below by taking examples. Figure 5As shown, the power management module 103 includes a power management chip 109, a voltage conversion module 110, a buck module 107 and a control chip (such as MCU104), multiple sockets 101 include socket Socket1, socket Socket2, socket Socket3, socket Socket4, socket Socket5, and socket Socket6, multiple relays 102 include relay RELAY1, relay RELAY2, relay RELAY3, relay RELAY4, relay RELAY5, and relay RELAY6, multiple LED indicator lights 106 include a first LED lamp LED1, a second LED lamp LED2, a third LED lamp LED3, a fourth LED lamp LED4, a fifth LED lamp LED5, and a sixth LED lamp LED6, one end of the thermal circuit breaker 105 is connected to the L line, and the other end of the thermal circuit breaker 105 is respectively connected to the first input end of the voltage conversion module 110 and the power management The first input end of the chip 109, the second input end of the voltage conversion module 110 and the second input end of the power management chip 109 are connected together and then connected to the N line. The first output end of the voltage conversion module 110 is connected to the input end of the step-down module 107. The second output end of the voltage conversion module 110 is connected to one end of the relay coil of each relay. The first output end of the step-down module 107 is connected to the third input end of the power management chip 109. The first output end of the power management chip 109 is respectively connected to the other end of the relay coil of each relay. The second output end of the power management chip 109 is respectively connected to one end of the contact switch of each relay. The other end of the contact switch of each relay corresponds to the first end of the socket. The second end of each socket is connected to the N line. The third end of each socket is respectively connected to the E line and an LED lamp. The MCU104 is connected to the power management chip 109 through the SPI interface. The MCU104 also powers the LED lamp through the LED power supply module 108.

[0143] The working principle of this circuit structure is as follows: the power management chip 109 is the core component of the power management module 103, and is mainly used to measure and monitor the electrical parameters (such as voltage, current, power, etc.) of multiple sockets in real time. The power management chip 109 uses a voltage and current measurement IC (voltage and current measurement chip), which has high-precision electrical parameter measurement capabilities and multi-channel support functions. Through communication with MCU104, the measurement results are fed back for analysis and processing by MCU104. The power management chip 109 is powered by the voltage conversion module 110 and the step-down module 107 to ensure that it operates stably under different input voltage conditions. The voltage conversion module 110 converts the voltage output by the thermal circuit breaker 105 (such as AC220V or 110V) into an intermediate voltage (such as DC24V) used inside the system. The voltage conversion module is an AC-DC POWER MODULE (AC-DC power module), which inputs an AC power supply (such as AC110V or 220V), has an output voltage of 5 volts, and a maximum output current of 2 amperes. The design of this module adopts a high-efficiency energy conversion circuit, which can stabilize the output voltage and provide high-power support to meet the power requirements of multiple sockets 101 and the power management chip 109. In addition, the output end of the voltage conversion module 110 is directly connected to the step-down module 107 to provide it with input power, while ensuring the overall efficiency and stability of the power supply system. The step-down module 107 is a power management chip that stabilizes a higher input voltage into a lower output voltage using an LDO (Low Dropout Regulator), and is often used in scenarios that require low noise and low ripple. The step-down module 107 is based on the principle of switching voltage regulation (such as a DC-DC converter), and further reduces the intermediate voltage output by the voltage conversion module 110 to a low voltage (such as DC5V or 3.3V), and supplies power to the control chip MCU104 and the power management module 103. The output of the step-down module 107 has the characteristics of low noise and high stability, which can ensure the normal operation of the control chip MCU104, and provide reliable power support for the control ends of multiple relays 102. The power management chip 109 can also communicate with the control chip MCU104 through a communication interface (such as I 2C, SPI or UART) interacts with MCU104 to transmit measured electrical parameter values, such as: voltage value, real-time measurement of the AC voltage value of the socket input; current value, real-time monitoring of the load current and detection of abnormal conditions; power value, calculation and provision of instantaneous power and cumulative energy consumption data; frequency value, measurement and analysis of the frequency of the input voltage. After being processed by MCU104, these data can be used in a variety of application scenarios. The control method can also accurately control multiple relays 102 based on the electrical parameter values ​​provided by MCU104 through the power management chip 109. Among them, in the control method, while ensuring that the total current of the socket is less than or equal to the current threshold (for example, 15A), as many relays as possible are energized, that is, as many sockets as possible are powered, that is, as many electrical devices as possible are powered. Taking the socket as a 6-way socket as an example, the overall scheme is described as follows, wherein the MCU104 collects the current value of a single-way socket through the power management chip 109, and collects the current of socket 1 as I1, the current of socket 2 as I2, the current of socket 3 as I3, the current of socket 4 as I4, the current of socket 5 as I5, and the current of socket 6 as I6, then the total current I of the socket output is I=I6+I5+I4+I3+I2+I1. The process of collecting current is: at the initial moment when the socket is powered on, the 6 relays are energized one by one to test the external power supply current of each socket, and the MCU104 collects the current value of each socket circuit one by one through the power management chip 109. Among them, the time of each energization is short (3 to 5S), even if there is a single-way current exceeding the threshold, it will not trigger the thermal circuit breaker or cause damage. If a short circuit occurs in the electrical appliance, the thermal circuit breaker 105 will protect normally. The collected currents are sorted, and the current values ​​of the 6-way socket circuits are sorted to obtain the sorting result. For example, the sorting result is I6<I4<I2<I1<I3<I5. Through the control judgment of MCU104, as many sockets as possible are used to supply power to the outside without overloading. MCU104 forms a triangle sequence by superimposing output currents in sequence from low to high to obtain multiple output currents and, for example, the first triangle sequence value is I6, the second triangle sequence value is I6+I4, the third triangle sequence value is I6+I4+I2, the fourth triangle sequence value is I6+I4+I2+I1, the fifth triangle sequence value is I6+I4+I2+I1+I3, and the sixth triangle sequence value is I6+I4+I2+I1+I3+I5. When I6+I4+I2<15 and I6+I4+I2+I1>15, the relays of the three-way sockets corresponding to the currents I6, I4, and I2 are controlled by the MCU to be energized, and the relays of the three-way sockets corresponding to the currents I1, I3, and I5 are not energized.If there is a socket and no electrical appliance is plugged in, the collected current value is naturally zero. When the current is sorted, it is ranked at the front. Therefore, the corresponding relay is energized, the socket supplies power to the outside, and the corresponding LED indicator lights up, indicating that the corresponding socket circuit is turned on.

[0144] After the control socket is turned on, there are also the following three situations:

[0145] 1. Dynamically control the conduction of a single socket circuit based on the reduction of current value: MCU104 will periodically monitor and scan all sockets that have been powered on through the power management chip 109, and collect the power supply current of the sockets in real time. During the operation of electrical appliances, if the current of an electrical appliance decreases over time (for example, the battery pack is full and the charging current becomes smaller), MCU104 determines that increasing the remaining power consumption current to the minimum I1 will not be overloaded, and MCU104 will make the relay of the socket (I1) that is not powered on close to supply power to the outside. For example: when the collected data I6+I4+I2 satisfies I6+I4+I2+I1<15 and I6+I4+I2+I1+I3>15, the relay of the socket corresponding to I1 is controlled to be closed; or, when the collected data I6+I4+I2 satisfies I6+I4+I2+I1+I3<15 and I6+I4+I2+I1+I3+I5>15, the relay of the socket corresponding to current I1 and I3 is controlled to be closed, and so on. Here, MCU104 obtains the current value collected by the power management chip 109 and controls the corresponding relay to be closed when the circuit conduction condition (I≤15) is met, which can be performed in real time or periodically.

[0146] 2. Dynamically control the conduction of a single socket circuit based on the increase in current value: When the current value of I4 in the conducted socket circuit is increased, it is determined that there may be a new connected electrical appliance. When the current value I4 of other conducted socket circuits is greater than 15, the relay of the socket corresponding to I4 is controlled by MCU104 not to be attracted. At the same time, if there are other conduction circuits, control them to be conducted.

[0147] 3. Control the conduction of a single socket circuit based on voltage value: 6 sockets are connected in parallel to alternating current (AC: 180-264V). When the power management module 103 detects that the voltage value of the corresponding circuit is out of range, the MCU 104 controls the corresponding relay not to be attracted.

[0148] The embodiment of the present invention provides a time-sharing power supply solution, which can not only protect the power supply line and the power strip itself, but also complete the tasks set by the user. For example: when the rated output power of an ordinary power strip is 2KW, the working power of the oven is 1.5KW, and the working power of the electric kettle is 1.2KW, when the oven and the electric kettle are connected to the ordinary power strip and work at the same time, the total power output of the power strip is 2.7KW, which greatly exceeds the rated power of the power strip. Long-term use may cause the power supply line of the power strip to burn due to heat. However, if the power strip designed by the present invention is used, the power strip will intelligently allocate the working time periods of the oven and the electric water heater, and give power to the oven and the electric kettle in turn, which will not cause overload problems.

[0149] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A control method for an intelligent power strip, characterized in that: The smart power strip includes a power management module, a plurality of sockets and a plurality of relays, the sockets and the relays are connected in series one by one, the power management module is connected to the plurality of relays respectively, and the control method is applied to the power management module, including: When the smart power strip supplies power to the outside, obtaining electrical parameter values ​​of the multiple sockets; The on and off of the plurality of relays are dynamically controlled according to the electrical parameter value and the preset value to control the working status of the plurality of sockets.

2. The control method according to claim 1, characterized in that: When the smart power strip supplies power to the outside, obtaining the electrical parameter values ​​of the plurality of sockets includes: When the smart socket strip is started, the relay is controlled to be turned on to obtain the electrical parameter value of each socket.

3. The control method according to claim 2, characterized in that: The electrical parameter value is an output current value, the preset value is a preset current threshold, and the on-off of the plurality of relays is dynamically controlled according to the electrical parameter value and the preset value, including: Controlling the on and off of the plurality of relays according to the output current value of each socket and the preset current threshold value corresponding to each socket; or, The output current value of each socket is sorted, and the output current values ​​are superimposed in sequence from low to high in a triangular sequence to obtain multiple output current sums, and the on and off of the multiple relays are controlled according to the output current sums and the preset current threshold of the smart socket.

4. The control method according to claim 1, characterized in that: The dynamically controlling the on and off of the plurality of relays according to the electrical parameter value and the preset value comprises: When it is detected that the electrical parameter value changes and the relationship between the electrical parameter value and the preset value reaches a condition for a change in the working states of the plurality of sockets, the on and off states of the plurality of relays are adjusted.

5. The control method according to claim 4, characterized in that: The electrical parameter value is an output current value, the preset value is a preset total current threshold, and the plurality of sockets include sockets that supply power to the outside and sockets that do not supply power to the outside; When it is detected that the electrical parameter value changes, and the relationship between the electrical parameter value and the preset value reaches the working state change condition of the plurality of sockets, adjusting the on and off states of the plurality of relays includes: When it is detected that the total output current value of the external power supply sockets decreases, and the total output current after adding and turning on at least one non-powered socket does not exceed the preset total current threshold, the at least one non-powered socket is added and turned on, wherein the working state change conditions of the multiple sockets include: the sum of the total output current value of the external power supply sockets and the output current value of the at least one non-powered socket does not exceed the preset total current threshold.

6. The control method according to claim 4, characterized in that: The electrical parameter value is an output current value, the preset value is a preset total current threshold, and the plurality of sockets include an external power supply socket; When it is detected that the electrical parameter value changes, and the relationship between the electrical parameter value and the preset value reaches the working state change condition of the plurality of sockets, adjusting the on and off states of the plurality of relays includes: When it is detected that the total output current value of the external power supply sockets increases and the total output current of the external power supply sockets exceeds the preset total current threshold, at least one external power supply socket is turned off, wherein the working state change condition of the multi-way socket includes: the total output current value of the external power supply sockets exceeds the preset total current threshold.

7. The control method according to claim 1, characterized in that: The electrical parameter value is an output voltage value, and the preset value is a preset voltage range; The dynamically controlling the on and off of the plurality of relays according to the electrical parameter value and the preset value comprises: When it is detected that the output voltage value of the socket is not within the preset voltage range, the relay is controlled to be turned off.

8. A smart power strip, characterized in that: include: Multiple sockets; A plurality of relays, wherein the relays are connected in series with the sockets in a one-to-one correspondence to control the plurality of sockets to supply power or not supply power to the outside; A power management module is connected to each relay and is used to obtain the electrical parameter values ​​of the multiple sockets when the smart power strip supplies power to the outside, and dynamically control the on and off of the multiple relays according to the electrical parameter values ​​and preset values ​​to control the working status of the multiple sockets.

9. The intelligent power strip according to claim 8, characterized in that: The intelligent socket also includes: A thermal circuit breaker is connected between the power management module and an external power source and is used to disconnect when a short circuit occurs in the smart power strip.

10. The intelligent power strip according to claim 8, characterized in that: The intelligent socket also includes: A plurality of LED indicator lights are connected to the sockets in a one-to-one correspondence and are used to indicate the output status of the connected sockets.

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