TWI673933B - Smart charging method - Google Patents

Abstract

The invention provides a smart charging method. A charging device is powered by a mains power supply. The charging device is provided with a plurality of charging areas. Each charging area includes a plurality of sockets. The sockets are used for charging a plurality of mobile electronic devices. The charging device is provided with a control circuit for automatically charging the mobile electronic devices plugged in the charging areas. The automatic charging control method first filters the inrush current, and continues to use the current sensor to capture the sum of the currents required by the charging areas, and then compares the current with the maximum value of the current supply. When the sum is greater than the maximum current supply, each charging zone takes turns charging at a first charging time. If the sum of at least two sets of added currents in each charging area is less than the maximum value of the current supply, the eligible charging area and the remaining charging area are alternately charged for a second charging time until the mobile electronic devices are fully charged. . With the aforementioned smart charging method, inrush current can be filtered out, and the charging efficiency can be effectively increased to shorten the charging time of the mobile electronic device.

Description

Smart charging method

The invention provides a smart charging method, in particular, a smart charging method for a charging device can filter out inrush current, and can effectively increase the charging efficiency to shorten the charging time of a mobile electronic device.

According to the rapid development of today's electronic technology and multimedia information, electronic products such as smart phones, tablets, and notebook computers have been trending toward thin, short, and powerful functions, mainly featuring small size, light weight, and convenient portability. The software and hardware functions are constantly being updated, and they are more flexible and practical. They have become indispensable and widely used in people's work, life and entertainment.

However, due to the increasing processing speed of electronic products, mobile electronic devices such as smartphones, tablets, and notebook computers consume significant power. Therefore, electronic products are often used while users are walking. The battery power of the mobile electronic device is quickly exhausted, so the user needs to find a nearby outlet for charging, so that the battery inside the mobile electronic device can be replenished with electricity.

In a teaching environment (such as a school), in order to meet the needs of digital teaching, teachers and students use mobile electronic devices such as tablets or notebook computers instead of traditional books to transfer knowledge and charge mobile electronic devices. Becomes extremely important, using a charge Device (charging cabinet or car) to charge multiple mobile electronic devices. The method is to set a plurality of AC sockets or DC charging docks (Thai and half USB sockets) inside, and then pass the necessary charger and charging cable to Charging mobile electronic devices. Because dozens of mobile electronic devices are charging at the same time, it will cause an overload of the power distribution system. Therefore, the charging device will distinguish a plurality of charging areas inside, and then the zones will be cycled in turn for electrical connection. The mobile electronic devices in some charging areas are charged to avoid the overload problem of the power distribution system. However, when only the charging areas are powered by zones, the mobile electronic devices will have the disadvantage of delaying the charging completion time, so how to provide A fast and efficient smart charging method is the direction that related manufacturers in this industry are eager to research and improve.

Therefore, in view of the above-mentioned problems and deficiencies, the inventors collected relevant information and evaluated and considered it from various parties, and made continuous trials and modifications with years of R & D experience in this industry. This kind of smart charging method invention patent was born. .

The main purpose of the present invention is to provide a smart charging method, which uses a mains power supply to supply a charging device. The charging device is provided with a plurality of charging areas, each charging area includes a plurality of sockets, and the sockets are used for multiple actions. The electronic device is charged, and the charging device is provided with a control circuit for automatically charging the mobile electronic devices inserted in the charging areas. The automatic charging control method first filters the inrush current, and continues to use the current sensor to capture the sum of the currents required by the charging areas, and then compares the current with the maximum value of the current supply. When the sum is greater than the maximum current supply, each charging zone takes turns charging at a first charging time. If the sum of at least two sets of added currents in each charging area is less than the maximum value of the current supply, the eligible charging area and the remaining charging area are charged for a second charging time. Perform alternate charging until the mobile electronic devices are fully charged. With the aforementioned smart charging method, inrush current can be filtered out, and the charging efficiency can be effectively increased to shorten the charging time of the mobile electronic device.

A secondary object of the present invention is that the surge prevention circuit further includes a surge switching relay and a surge absorber. When the surge switching relay is electrically connected to a contact having the surge absorber, and After absorbing a surge current for a period of time, the surge switching relay is switched to another contact without the surge absorber for charging operation.

1‧‧‧ power socket

2‧‧‧ charging device

21‧‧‧First charging zone

211‧‧‧Socket

212‧‧‧Circuit breaker

22‧‧‧Second Charging Zone

221‧‧‧Socket

23‧‧‧ Third charging zone

231‧‧‧Socket

24‧‧‧Fourth charging zone

241‧‧‧Socket

25‧‧‧Control circuit

251‧‧‧Current sensor

252‧‧‧Micro Control Unit

253‧‧‧ overload relay

26‧‧‧Surge protection circuit

261‧‧‧Surge Switching Relay

262‧‧‧Surge absorber

27‧‧‧ Circuit Breaker

31‧‧‧ Turn on the power of the charging device

32‧‧‧ wait for a predetermined time, so that a surge prevention circuit absorbs a surge current

33‧‧‧Using a plurality of current sensors in a control circuit electrically connected to the surge prevention circuit to capture the total current required by the full charging area

34‧‧‧ A micro-control unit electrically connected to the current sensors determines whether the sum of the currents in the full charging areas is greater than a maximum current supply

35‧‧‧ The multiple overload relays set between the control circuit and the charging areas are repeatedly turned on / off to a predetermined number of times

36‧‧‧ Turn off these overload relays for power reset

37‧‧‧ The micro control unit switches all the overload relays to the on state to provide the current required for the full charging area for charging

38‧‧‧ Is the sum of the currents in at least two charging areas greater than the maximum current supply

39‧‧‧ Multiple charging zones take turns charging at a first charging time

40‧‧‧ alternately charge the complex charging area and the remaining charging area whose sum of the added current is less than the maximum value of the current supply for a second charging time

The first figure is a functional block diagram of the circuit of the charging device of the present invention.

The second figure is a flowchart of the smart charging method of the present invention.

In order to achieve the above-mentioned object and effect, the technical means and structure adopted by the present invention, the drawings and detailed description of the structure and function of the preferred embodiment of the present invention are as follows.

Please refer to the first figure, which is a functional block diagram of the charging device of the present invention. It can be seen from the figure that the main circuit elements of the charging device of the present invention include a power socket 1 and a charging device 2. The charging device includes The first charging area 21, the second charging area 22, the third charging area 23, the fourth charging area 24, the control circuit 25, the surge prevention circuit 26, and the circuit breaker 27. Each circuit element is described in more detail as follows: using a commercial power source (AC power) Power is supplied to a charging device 2 through a power socket 1. The charging device 2 can be a charging cabinet or a charging vehicle, and the difference between a charging cabinet and a charging vehicle It is only that the charging cabinet is a fixed-point charging device; and the charging vehicle is a movable charging device. The charging device is provided with a plurality of charging areas. The charging areas include a first charging area 21, a second charging area 22, and a third charging area. 23 and the fourth charging area 24, each charging area (21, 22, 23, 24) includes a plurality of sockets (211, 221, 231, 241), and these sockets (211, 221, 231, 241) are provided for a plurality of A mobile electronic device (not shown in the figure, which can be a tablet computer, a notebook computer or a smart phone) is used for charging. The charging device 2 is provided with a control circuit 25 for plugging into the charging areas (21, 22, 23, 24). These mobile electronic devices perform automatic charging control, and a surge prevention circuit 26 is provided between the power outlet 1 and the control circuit 25. The surge prevention circuit 26 is used to absorb an inrush current (Inrush) ( Or pulse current) to ensure that the electronic components in the charging device 2 are not burned by the surge current.

The first charging area 21 is further provided with a circuit breaker 212 between the sockets 211 and the control circuit 25. The maximum current tolerance of the circuit breaker 212 is 4 amps (A), and the preferred embodiment is the The first charging area 21 is provided outside the charging device 2 and has a priority order for charging.

The control circuit 25 includes a plurality of current sensors 251. An overload relay 253 is electrically connected between each of the current sensors 251 and each of the charging areas (21, 22, 23, 24), and the current sensors 251 and the overloads The relays 253 are electrically connected to a Micro Control Unit (MCU) 252 to form the control circuit 25.

The surge prevention circuit 26 further includes a surge switching relay 261 and a surge absorber 262. When the surge switching relay 261 switches the electrical connection, it has the following characteristics: After the surge absorber 262 contacts and absorbs a surge current for a period of time, the surge switching relay 261 is switched to another contact without the surge absorber 262 for charging operation. The surge absorber 262 is composed of at least one or more negative temperature coefficient resistors or filter capacitors.

A circuit breaker 27 is provided between the power socket 1 and the surge prevention circuit 26. The circuit breaker 27 is composed of a fuse or a knife switch and has a maximum current tolerance range. 10 amps to 12 amps (A).

Please refer to the second figure, which is a flowchart of the smart charging method of the present invention, which includes the following steps:

Step 31. Turn on the power of the charging device.

Step 32. Wait for a predetermined time to allow a surge prevention circuit to absorb a surge current. A preferred implementation range of the predetermined time is 400 milliseconds to 500 milliseconds (ms).

Step 33: Use a plurality of current sensors in one of the control circuits electrically connected to the surge prevention circuit to retrieve the total current required in the full charging area.

Step 34: A micro-control unit electrically connected to the current sensors determines whether the sum of the currents in the full charging areas is greater than a maximum current supply. If yes, execute step (35), and if not, execute step (37). This current supply has a maximum range of 12 to 15 amps (A).

Step 35. The multiple overload relays set between the control circuit and the charging areas are repeatedly turned on. / Close to a predetermined number of times. The preferred implementation of the relays being repeatedly turned on / off to the predetermined number of times is to turn on for 1 second, turn off for 3 seconds, and repeat the execution 20 times.

Step 36: Turn off the overload relays to perform power reset, and execute step (31).

Step 37: The micro control unit switches all the overload relays to the on state to provide the current required by the full charging area for charging.

Step 38: Whether the sum of the currents added to the at least two charging areas is greater than the maximum value of the current supply; if yes, go to step (39); if not, go to step (40).

Step 39: The plurality of charging areas take turns charging at a first charging time, and then perform step (32). A preferred implementation range of the first charging time is 40 minutes to 50 minutes, and a preferred implementation time is 45 minutes.

In step 40, at least two charging areas and the remaining charging area whose total sum is less than the maximum value of the current supply are alternately charged for a second charging time, and then step (32) is performed. A preferred implementation range of the second charging time is 20 minutes to 40 minutes, and a preferred implementation time is 30 minutes.

For the above steps 38 to 40, take an example: if the first charging area requires 5 amps (A), the second, third and fourth charging areas are all 8 amps (A), and at least two charging areas The sum of the added currents (5 + 8 = 13 or 8 + 8 = 16) is greater than the maximum current supply of 12 amps, so step 39 is performed to alternately charge the plurality of charging areas at the first charging time. After the four charging zones are alternately charged, the charging amperes required for the first to fourth charging zones are 3 amps (A), 5 amps (A), 5 amps (A), and 5 amps (A). The sum of the currents of the at least two charging areas (3 + 5 = 8 or 5 + 5 = 10) is less than the maximum current supply of 12 amps. At this time, step 40 can be performed for each charging area. After charging, repeat step 32 to step 40 repeatedly until the mobile electronic devices are fully charged.

Through the disclosure of the first and second figures above, it can be understood that the present invention is a smart charging method, which uses a mains power supply to power a charging device. The charging cabinet or a charging car is provided with a plurality of charging areas, each charging The area includes a plurality of sockets, which are used for charging a plurality of mobile electronic devices. The charging device is provided with a control circuit for an automatic control method for charging the mobile electronic devices inserted in the charging areas. The automatic charging control method first filters the inrush current, and continues to use the current sensor to capture the sum of the currents required by the charging areas, and then compares the current with the maximum value of the current supply. When the sum is greater than the maximum current supply, each charging zone takes turns charging at a first charging time. If the sum of at least two sets of added currents in each charging area is less than the maximum value of the current supply, the eligible charging area and the remaining charging area are alternately charged for a second charging time until the mobile electronic devices are fully charged. . With the aforementioned smart charging method, inrush current can be filtered out, and the charging efficiency can be effectively increased to shorten the charging time of the mobile electronic device. The smart charging method of the present invention has great market opportunities when applied to, for example, a charging cabinet or a charging car, so a patent application is filed to seek patent protection.

The above detailed description is only a description of a preferred feasible embodiment of the present invention, but this embodiment is not intended to limit the scope of the patent application of the present invention, and other equivalent changes and modifications made without departing from the spirit of the technology disclosed by the present invention Changes should be included in the scope of patents covered by the present invention.

In summary, the above-mentioned smart charging method of the present invention can really achieve its efficacy and purpose when in use. Therefore, the present invention is an invention with excellent practicality, which is in line with the invention. The application requirements for the patent are submitted in accordance with the law. I hope that the trial committee will grant this case at an early date to protect the inventor's hard invention. If there is any suspicion in the Bureau, please write the letter and the inventor will cooperate as hard as possible.

Claims (9)

A smart charging method uses a mains power source to supply power to a charging device through a power socket. The charging device is provided with a plurality of charging areas, and each charging area includes a plurality of sockets. The sockets are used for charging a plurality of mobile electronic devices. The charging device is provided with a control circuit for automatically controlling the charging of the mobile electronic devices plugged in the charging areas. The steps include: (A), turning on the power of the charging device; (B), waiting for a predetermined time, In order to make a surge prevention circuit absorb a surge current; (C), using a plurality of current sensors in a control circuit electrically connected to the surge prevention circuit to capture the sum of the currents required in the full charging area; ( D) A micro-control unit electrically connected to the current sensors determines whether the sum of the currents in the full charging areas is greater than a maximum current supply, and if yes, execute step (E), and if not, execute step (G); (E). The multiple overload relays set between the control circuit and the charging areas are repeatedly turned on / off to a predetermined number of times; (F). The overload relays are turned off to reset the power, and execute Go to step (A); (G), the micro control unit switches all the overload relays to the on state to provide the current required for the full charging area for charging; (H), whether the sum of the currents of at least two charging areas is greater than the current If it is the maximum supply value, perform step (I) if it is not, and perform step (J) if it is not; (I), each charging zone takes turns charging at a first charging time, and then execute step (B); and (J) At least two or more charging areas and the remaining charging areas are alternately charged at a second charging time, and then step (B) is performed. The smart charging method as described in item 1 of the scope of patent application, wherein the preferred implementation range of the predetermined time of step (B) is 400 milliseconds to 500 milliseconds (ms). The smart charging method as described in item 1 of the scope of patent application, wherein the relays of step (E) are repeatedly turned on / off to the predetermined number of times. The preferred implementation is to turn on for 1 second, turn off for 3 seconds, and repeat for 20 seconds. Times. The smart charging method as described in item 1 of the scope of patent application, wherein the surge prevention circuit in step (B) further includes a surge switching relay and a surge absorber. When the surge switching relay switches the power The sexual connection has a contact of the surge absorber, and after absorbing a surge current for a period of time, the surge switching relay is switched to another contact without the surge absorber for charging operation. The smart charging method as described in item 5 of the scope of patent application, wherein the surge absorber is composed of at least one negative temperature coefficient resistor or filter capacitor. According to the intelligent charging method described in the first item of the patent application scope, wherein the control circuit includes a plurality of current sensors, an overload relay is electrically connected between each of the current sensors and each of the charging areas, and the current sensors and the The overload relays are electrically connected to the micro control unit, thereby constituting the control circuit. The smart charging method described in item 1 of the scope of patent application, wherein the preferred implementation range of the first charging time is 40 minutes to 50 minutes. According to the smart charging method described in the first item of the patent application scope, a preferred implementation range of the second charging time is 20 minutes to 40 minutes. The smart charging method as described in the first item of the patent application range, wherein the maximum range of the current supply is 12 amps to 15 amps.