A control system and method for preventing abnormal charging

Abstract

The present invention provides a control system and method for preventing abnormal charging, comprising the following steps: S1: detecting the voltage and current values ​​of a charger at intervals of time t0, and entering S2; S2: calculating P1 according to the voltage and current values ​​of the charger, and entering S3; S3: comparing P1 of the charger with P2 to determine whether P1 of the charger is normal, if not, entering S4, if yes, entering S1; S4: stopping supplying power to the charger; wherein t0 is the time interval for sampling the voltage and current values ​​of the charger, P1 is the actual power value of the charger, P2 is the power-off power value of the charger, and P2 can be set by the user; the present application can detect in time after an electrical appliance is fully charged, or when a user forgets to unplug the charger, and automatically cut off the power supply of the charger, thereby avoiding overcharging of the electrical appliance, reducing the standby time of the charger, effectively preventing safety accidents such as fire caused by overheating of the electrical appliance or the charger, reducing power waste, extending battery life, and saving energy.

Description

Technical Field

[0001] The present invention relates to the technical field of smart electric meters, and in particular to a control system and method for preventing abnormal charging. Background Art

[0002] In daily life, many people often forget to unplug the charger, resulting in unnecessary power waste and potential safety hazards. Common chargers such as mobile phones, power banks, power tools and electric vehicles often remain in standby or charging mode after the device has been charged. This meaningless power consumption not only increases energy waste, but may also cause serious safety problems such as overheating of electrical equipment and fire.

[0003] According to relevant accident reports, fires and electrical appliance damage caused by not unplugging the charger or not disconnecting the device in time are common, especially in a home environment, where multiple appliances use chargers at the same time, such as mobile phone chargers, laptop chargers, electric bicycle chargers, etc. If these devices cannot effectively monitor their charging status while charging, it is easy for the devices to be in an unnecessary charging state for a long time, which not only wastes energy but also poses a potential safety risk.

[0004] For example, patent CN1 18033232B discloses a refined intelligent energy meter based on an adapter plug that can identify the power of electrical appliances, including an adapter plug that can identify the power of electrical appliances. The adapter plug and the refined intelligent energy meter can communicate with the user's smart mobile terminal respectively to transmit the monitoring data and load usage period data recorded on the adapter plug, so that the refined intelligent energy meter can analyze the monitoring data and load usage period data after receiving them to determine the electrical energy consumed by the appliance plugged in and unplugged from the adapter plug. However, the aforementioned technical problems cannot be solved.

[0005] Existing household electricity meters can only monitor the overall power consumption, but cannot effectively monitor the charging status of a single appliance. When the appliance is fully charged or the charger is forgotten to be unplugged, it will automatically cut off the power supply of the charger to prevent the appliance from overcharging and the charger from overheating, thus reducing power waste and safety risks such as fire. Summary of the invention

[0006] In view of this, the present invention aims to propose a control system and method for preventing abnormal charging to solve the problem in the prior art that the charging status of a single electrical appliance cannot be effectively monitored and the charger power supply can be automatically cut off when the appliance is fully charged or the charger is forgotten to be unplugged.

[0007] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0008] A control method for preventing abnormal charging, comprising the steps of:

[0009] S1: At every interval of t0, detect the voltage and current values ​​of the charger and enter S2;

[0010] S2: Calculate P1 according to the voltage and current values ​​of the charger and enter S3;

[0011] S3: Compare P1 and P2 of the charger to determine whether P1 of the charger is normal. If not, go to S4. If yes, go to S1.

[0012] S4: stop supplying power to the charger;

[0013] Among them, t0 is the time interval for sampling the voltage and current values ​​of the charger, P1 is the actual power value of the charger, and P2 is the power-off power value of the charger. P2 can be set by the user.

[0014] The method can detect in time when the appliance is fully charged or when the user forgets to unplug the charger, and automatically cut off the power supply of the charger to avoid overcharging of the appliance, reduce the standby time of the charger, and effectively prevent safety accidents such as fire caused by overheating of the appliance or charger, reduce power waste, extend battery life, and save energy.

[0015] Further, step S3 includes:

[0016] S31: Determine whether P1≤P2, if yes, go to S32, if no, go to S1;

[0017] S32: Determine whether t2>t1. If so, the charger has entered the trickle charging mode or the standby mode, and enter S4. If not, enter S1.

[0018] Wherein, t1 is the upper threshold of the time when the charger enters the trickle charging mode or the standby mode, and t2 is the actual time when the charger enters the trickle charging mode or the standby mode.

[0019] This method can not only ensure that the appliances are fully charged, but also prevent the appliances from being overcharged for a long time or the charger from being in standby mode for a long time. It can reduce unnecessary power consumption, extend battery life, and reduce potential risks of fire and electrical failure.

[0020] The present application also provides a control system for preventing abnormal charging, which is used in the aforementioned control method for preventing abnormal charging, comprising: a smart meter and a smart socket, wherein the smart meter and the smart socket can communicate with each other;

[0021] The smart socket is used to provide electrical energy to the charger, and can measure the voltage and current values ​​of the charger, and feed the measured voltage and current values ​​back to the smart meter. The smart meter calculates P1 according to the voltage and current values ​​of the charger, and compares the P1 of the charger with the P2 recorded in the storage record, and adjusts the power supply status of the smart socket to the charger according to the comparison result.

[0022] The control system for preventing abnormal charging described in the present application can detect in time when the appliance is fully charged, or when the user forgets to unplug the charger, by comparing the actual power value with the preset power-off power value, thereby automatically cutting off the power supply in time to avoid overcharging, reduce the long standby time of the charger, and avoid safety accidents such as fire caused by overheating of the charger. At the same time, it can also reduce power waste and save energy.

[0023] Furthermore, the smart meter comprises:

[0024] A communication module, used for communicating with the smart socket;

[0025] A storage module, used to store information fed back by P2 and the communication module;

[0026] A display module, including a touch display screen, for displaying the operation information of the smart meter and for inputting control information;

[0027] Clock module, used to feedback the current time and the operation time of the smart meter;

[0028] Power module, used to provide stable power to smart meters;

[0029] The control module can calculate the P1 of the charger through the voltage and current values ​​fed back by the smart socket, and compare the P1 of the charger with the P2 recorded in the storage module, and adjust the working state of the smart socket according to the comparison result.

[0030] This setting can cut off the power supply in time when the appliance is fully charged, preventing the appliance from overcharging and the charger from overheating, thereby extending the service life of the appliance and the charger and reducing electrical safety accidents.

[0031] Furthermore, the smart socket includes:

[0032] The detection unit, including a voltage transformer and a current transformer, can collect the voltage and current values ​​of the charger in real time, convert them into digital signals through an A / D converter and send them to the control module for processing;

[0033] A communication unit, used for communicating with a smart meter;

[0034] A power supply unit, used to control the on / off of the circuit between the smart socket and the charger;

[0035] A power supply unit, used to provide stable power to the smart socket;

[0036] The control unit is used to adjust the working state of the power supply unit according to the instruction of the smart meter.

[0037] With this setting, when the appliance is fully charged, the smart meter can promptly detect the charging location based on the information fed back by the smart socket, and control the corresponding smart socket to stop supplying power to the charger, greatly improving safety.

[0038] Furthermore, the smart meter can output a power curve of the charger, and the user can select a power value at any time point as P2 as needed.

[0039] By viewing the power curve, users can understand the working status of the charger in different time periods and select the optimal power-off power value, which helps to improve charging efficiency, avoid unnecessary power waste, reduce the risk of overcharging and overheating, and enhance the safety of the charging process.

[0040] Furthermore, the communication mode between the communication module and the communication unit is wireless communication.

[0041] Wireless communication reduces the complexity of wiring, reduces installation costs and time, and allows users to deploy equipment more conveniently. It has strong adaptability and can meet the needs of a variety of application scenarios.

[0042] Furthermore, the smart socket is provided with an alarm indicator light, and after the power supply unit is turned off, the alarm indicator light lights up to remind the user.

[0043] The alarm indicator light can provide users with timely visual feedback when the appliance is fully charged or the user forgets to unplug the charger, helping users quickly understand the working status of the charger and avoid overheating and damage to the charger or safety accidents.

[0044] Furthermore, the smart socket is provided with a reset button, and the reset button is used to adjust the working state of the power supply unit.

[0045] When the user unplugs the charger from the smart socket, the working state of the smart socket can be quickly reset through the reset button, which improves the user experience.

[0046] Compared with the prior art, the control system and method for preventing abnormal charging of the present invention have the following advantages:

[0047] It can detect in time when the appliance is fully charged or when the user forgets to unplug the charger, thereby automatically cutting off the power supply of the charger in time to avoid overcharging of the appliance, reduce the standby time of the charger, and avoid safety accidents such as fire caused by overheating of the appliance or charger. It can also reduce power waste, extend battery life and save energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 The figure is a flow chart of a method for preventing abnormal charging control according to an embodiment of the present invention. DETAILED DESCRIPTION

[0049] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0050] Example 1

[0051] like Figure 1 As shown, a control method for preventing abnormal charging includes the steps of:

[0052] S1: At every interval of t0, detect the voltage and current values ​​of the charger and enter S2;

[0053] S2: Calculate P1 according to the voltage and current values ​​of the charger and enter S3;

[0054] S3: Compare P1 and P2 of the charger to determine whether P1 of the charger is normal. If not, go to S4. If yes, go to S1.

[0055] S4: stop supplying power to the charger;

[0056] Among them, t0 is the time interval for sampling the voltage and current values ​​of the charger, P1 is the actual power value of the charger, and P2 is the power-off power value of the charger. P2 can be set by the user.

[0057] Specifically, by comparing the actual power value of the charger with the power-off power value, the method can detect in time when the appliance is fully charged or when the user forgets to unplug the charger, and automatically cut off the power supply of the charger to avoid overcharging of the appliance, reduce the standby time of the charger, and effectively prevent safety accidents such as fire caused by overheating of the appliance or charger, reduce power waste, extend battery life, and save energy; at the same time, users can set the power-off power values ​​of different types of chargers to facilitate monitoring of the charging status of different types of chargers, which is convenient for users to use and greatly expands the scope of application of this application.

[0058] As a preferred example of the present application, step S3 includes:

[0059] S31: Determine whether P1≤P2, if yes, go to S32, if no, go to S1;

[0060] S32: Determine whether t2>t1. If so, the charger has entered the trickle charging mode or the standby mode, and enter S4. If not, enter S1.

[0061] Wherein, t1 is the upper threshold of the time when the charger enters the trickle charging mode or the standby mode, and t2 is the actual time when the charger enters the trickle charging mode or the standby mode.

[0062] Specifically, this method can not only ensure that the electrical appliances are fully charged, but also prevent the electrical appliances from being in an overcharged state for a long time or the charger from being in a standby state for a long time, which can reduce unnecessary power consumption, extend battery life, and reduce potential risks of fire and electrical failure.

[0063] The present application also provides a control system for preventing abnormal charging, which is used in the aforementioned control method for preventing abnormal charging, comprising: a smart meter and a smart socket, wherein the smart meter and the smart socket can communicate with each other;

[0064] The smart socket is used to provide electrical energy to the charger, and can measure the voltage and current values ​​of the charger, and feed the measured voltage and current values ​​back to the smart meter. The smart meter calculates P1 according to the voltage and current values ​​of the charger, and compares the P1 of the charger with the P2 recorded in the storage record, and adjusts the power supply status of the smart socket to the charger according to the comparison result.

[0065] The control system for preventing abnormal charging described in the present application, when using a charger to charge mobile phones, power banks and other electrical appliances, the smart socket can detect the voltage and current values ​​of the charger in real time, and feed back the data to the smart meter to ensure continuous monitoring of the charging status. When the appliance is fully charged, the charger will enter the trickle charging mode. At this time, the voltage remains unchanged, the current is much smaller than the current during normal charging, and the power is much smaller than the power during normal charging. It is used to compensate for the capacity loss caused by battery self-discharge and maintain the full charge state of the battery. If the user takes the appliance away and forgets to unplug the charger, the charger will enter the standby mode. The power of the standby mode is less than the power of the trickle charging. The user can select the power value of the trickle charging as the power-off power value, so that even if the charger is in standby mode, it can be detected and powered off immediately. Therefore, by comparing the actual power value with the preset power-off power value, it can be detected in time after the appliance is fully charged, or when the user forgets to unplug the charger, so as to automatically cut off the power supply in time, avoid overcharging, reduce the long-term standby of the charger, and avoid safety accidents such as fire caused by overheating of the charger. At the same time, it can also reduce power waste and save energy.

[0066] Preferably, the smart electric meter is connected to an external power grid via a line.

[0067] As a preferred example of the present application, the smart meter includes:

[0068] A communication module, used for communicating with the smart socket;

[0069] A storage module, used to store information fed back by P2 and the communication module;

[0070] A display module, including a touch display screen, for displaying the operation information of the smart meter and for inputting control information;

[0071] Clock module, used to feedback the current time and the operation time of the smart meter;

[0072] The power module includes a transformer and a voltage regulator chip, which is used to provide stable power for the smart meter;

[0073] The control module can calculate the P1 of the charger through the voltage and current values ​​fed back by the smart socket, and compare the P1 of the charger with the P2 recorded in the storage module, and adjust the working state of the smart socket according to the comparison result.

[0074] Specifically, the comparison results output by the control module will also be saved in the storage module. The user can set the power-off power value in the storage module by touching the display screen. This setting can cut off the power supply in time when the appliance is fully charged, preventing the appliance from overcharging and the charger from overheating, thereby extending the service life of the appliance and charger and reducing electrical safety accidents.

[0075] Preferably, the clock module includes a real-time clock chip that can provide a stable clock reference and maintain time accuracy even in the event of a power outage. The clock module can also communicate with the Internet through the communication module to perform time calibration. The clock module can record operation logs and the time of abnormal events to help users diagnose problems and arrange maintenance work.

[0076] Preferably, the power module also includes a battery, and when the power grid fails, the battery can supply power to the smart meter.

[0077] As a preferred example of the present application, the smart socket includes:

[0078] The detection unit, including a voltage transformer and a current transformer, can collect the voltage and current values ​​of the charger in real time, convert them into digital signals through an A / D converter and send them to the control module for processing;

[0079] A communication unit, used for communicating with a smart meter;

[0080] A power supply unit, including a relay, for controlling the on / off of the circuit between the smart socket and the charger;

[0081] A power supply unit, including a transformer and a voltage regulator chip, is used to provide stable power to the smart socket;

[0082] The control unit is used to adjust the working state of the power supply unit according to the instruction of the smart meter.

[0083] Specifically, with this setting, when the appliance is fully charged, the smart meter can promptly detect the charging location based on the information fed back by the smart socket, and control the corresponding smart socket to stop supplying power to the charger, greatly improving safety.

[0084] As a preferred example of the present application, the smart meter can output the power curve of the charger, and the user can select the power value at any time point as P2 as needed.

[0085] Specifically, by viewing the power curve, users can understand the working status of the charger in different time periods and select the optimal power-off power value, which helps improve charging efficiency, avoid unnecessary power waste, reduce the risk of overcharging and overheating, and enhance the safety of the charging process.

[0086] As a preferred example of the present application, the communication method between the communication module and the communication unit is wireless communication.

[0087] Specifically, wireless communication reduces the complexity of wiring, reduces installation costs and time, allows users to deploy equipment more conveniently, has strong adaptability, and can meet the needs of a variety of application scenarios.

[0088] As a preferred example of the present application, the smart socket is provided with an alarm indicator light. After the power supply unit is turned off, the alarm indicator light lights up to remind the user.

[0089] Specifically, the alarm indicator light can provide users with timely visual feedback when the appliance is fully charged or the user forgets to unplug the charger, helping users quickly understand the working status of the charger and avoid overheating and damage to the charger or safety accidents.

[0090] As a preferred example of the present application, the smart socket is provided with a reset button, and the reset button is used to adjust the working state of the power supply unit.

[0091] Specifically, when the user unplugs the charger from the smart socket, the working state of the smart socket can be quickly reset through the reset button, thereby improving the user experience.

[0092] The control system and method for preventing abnormal charging described in the present application have the following advantages: 1) By comparing the actual power value with the preset power-off power value, it can be found in time after the appliance is fully charged or when the user forgets to unplug the charger, and the power supply of the charger can be automatically cut off to avoid overcharging of the appliance, reduce the standby time of the charger, and effectively prevent safety accidents such as fire caused by overheating of the appliance or charger. At the same time, it can also reduce power waste, extend battery life, and save energy; 2) By viewing the power curve, the user can understand the working status of the charger in different time periods and select the best power-off power value, which helps to improve charging efficiency, avoid unnecessary power waste, reduce the risk of overcharging and overheating, and enhance the safety of the charging process. Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope defined by the claims.

Claims

1. A control method for preventing abnormal charging, characterized in that: Includes steps: S1: At every interval of t0, detect the voltage and current values ​​of the charger and enter S2; S2: Calculate P1 according to the voltage and current values ​​of the charger and enter S3; S3: Compare P1 and P2 of the charger to determine whether P1 of the charger is normal. If not, go to S4. If yes, go to S1. S4: stop supplying power to the charger; Among them, t0 is the time interval for sampling the voltage and current values ​​of the charger, P1 is the actual power value of the charger, and P2 is the power-off power value of the charger. P2 can be set by the user.

2. The control method for preventing abnormal charging according to claim 1, characterized in that: Step S3 includes: S31: Determine whether P1≤P2, if yes, go to S32, if no, go to S1; S32: Determine whether t2>t1. If so, the charger has entered the trickle charging mode or the standby mode, and enter S4. If not, enter S1. Wherein, t1 is the upper threshold of the time when the charger enters the trickle charging mode or the standby mode, and t2 is the actual time when the charger enters the trickle charging mode or the standby mode.

3. A control system for preventing abnormal charging, used in the control method for preventing abnormal charging according to any one of claims 1 to 2, characterized in that: include: A smart meter and a smart socket, wherein the smart meter and the smart socket can communicate with each other; The smart socket is used to provide electrical energy to the charger, and can measure the voltage and current values ​​of the charger, and feed the measured voltage and current values ​​back to the smart meter. The smart meter calculates P1 according to the voltage and current values ​​of the charger, and compares the P1 of the charger with the P2 recorded in the storage record, and adjusts the power supply status of the smart socket to the charger according to the comparison result.

4. The control system for preventing abnormal charging according to claim 3, characterized in that: The smart electric meter comprises: A communication module, used for communicating with the smart socket; A storage module, used to store information fed back by P2 and the communication module; A display module, including a touch screen, for displaying the operation information of the smart meter and for inputting control information; Clock module, used to feedback the current time and the operation time of the smart meter; Power module, used to provide stable power to smart meters; The control module can calculate the P1 of the charger through the voltage and current values ​​fed back by the smart socket, and compare the P1 of the charger with the P2 recorded in the storage module, and adjust the working state of the smart socket according to the comparison result.

5. The control system for preventing abnormal charging according to claim 4, characterized in that: The smart socket comprises: The detection unit includes a voltage transformer and a current transformer, which can collect the voltage and current values ​​of the charger in real time, convert them into digital signals through an A / D converter and send them to the control module for processing; the communication unit is used to communicate with the smart meter; A power supply unit, used to control the on / off of the circuit between the smart socket and the charger; A power supply unit, used to provide stable power to the smart socket; The control unit is used to adjust the working state of the power supply unit according to the instruction of the smart meter.

6. The control system for preventing abnormal charging according to claim 3, characterized in that: The smart meter can output the power curve of the charger, and the user can select the power value at any time point as P2 according to needs.

7. The control system for preventing abnormal charging according to claim 5, characterized in that: The communication mode between the communication module and the communication unit is wireless communication.

8. The control system for preventing abnormal charging according to claim 5, characterized in that: The smart socket is provided with an alarm indicator light. After the power supply unit is turned off, the alarm indicator light lights up to remind the user.

9. The control system for preventing abnormal charging according to claim 5, characterized in that: The smart socket is provided with a reset button, and the reset button is used to adjust the working state of the power supply unit.

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