CN102270860B - Smartphone fast charging device - Google Patents

Abstract

A fast charging device for a smart phone, comprising a first connection unit, a second connection unit and a fast charging power conversion unit. The first connection unit is coupled to a connection socket with a power supply to receive a system voltage. The fast charging power conversion unit is coupled to the first connection unit to receive the system voltage of the connection socket, and provides a first voltage and a second voltage. The first voltage is between 3.2 and 1.1 volts, the second voltage is between 2.7 and 0.6 volts, and the voltage difference between the first voltage and the second voltage is between 0.5 and 0.8 volts. The second connection unit is coupled to the smart phone and the fast charging power conversion unit to transmit the system voltage, the first voltage and the second voltage to the smart phone. The smart phone activates the fast charging mode according to the first voltage and the second voltage to receive the system voltage for charging.

Description

Smartphone fast charging device

technical field

The present invention relates to an electronic device, and in particular to a fast charging device for a smart mobile phone.

Background technique

With the increasing popularity of mobile phones, mobile phones have undoubtedly replaced traditional indoor telephones for modern people, and have become the fastest and most convenient communication channel. However, mobile phones that only have basic functions such as calling, web browsing, and playing multimedia files are gradually unable to meet the increasingly diversified needs of consumers. In order to cater to the needs of consumers, manufacturers of mobile phone products are devoting themselves to research and development of smart phones with stronger functions and better expandability, so as to increase their market share.

Since the smart phone has almost the same functions as the personal computer, the smart phone can be connected to the connection port of the personal computer through a connection line, and transmit data with the personal computer. The connection port is such as a Universal Serial Bus (USB) ) port. When the smart phone and the personal computer are transmitting data, the smart phone can also receive power from the personal computer through the connection port to charge the battery. Due to the popularization of computers, it is more and more common for smart phones to be charged by connecting them to personal computers, so that how to quickly charge smart phones through personal computers has become an important issue.

Contents of the invention

The invention provides a fast charging device for a smart phone, which can start the fast charging function of the smart phone.

The present invention provides a fast charging device for a smart phone, which includes a first connection unit, a second connection unit and a fast charging source conversion unit. The first connection unit is coupled to the connection base with power supply. The fast charging source conversion unit is coupled to the first connection unit to receive the system voltage of the connection base, and provide the first voltage and the second voltage. Wherein, the first voltage is between 3.2-1.1 volts, the second voltage is between 2.7-0.6 volts, and the voltage difference between the first voltage and the second voltage is between 0.5-0.8 volts. The second connection unit is coupled to the smart phone and the fast charging source conversion unit to transmit the system voltage, the first voltage and the second voltage to the smart phone, and the smart phone starts a fast charging according to the first voltage and the second voltage mode to receive system voltage for charging.

In an embodiment of the present invention, the above-mentioned fast charging source conversion unit includes a first resistor, a second resistor, a third resistor and a fourth resistor. The first end of the first resistor is coupled to the system voltage of the connection socket, and the second end of the first resistor outputs the first voltage. The first terminal of the second resistor is coupled to the second terminal of the first resistor, and the second terminal of the second resistor is coupled to the ground voltage. The first terminal of the third resistor is coupled to the system voltage of the connecting socket, and the second terminal of the third resistor outputs the second voltage. The first terminal of the fourth resistor is coupled to the second terminal of the third resistor, and the second terminal of the fourth resistor is coupled to the ground voltage.

The present invention further proposes a fast charging device for a smart phone, which includes a first connection unit, a second connection unit, a switching switch, and a fast charging source activation unit. The first connection unit is coupled to the connection socket equipped with a power supply to receive a system voltage. The second connection unit is coupled to the smart phone. The switch has an input end, a first connection end and a second connection end, wherein the input end is coupled to the first connection unit, and the first connection end is coupled to the second connection unit. The fast charging source activation unit will be coupled to the second connection end of the switch and the second connection unit to receive the system voltage of the first connection unit, and provide the system voltage, the first voltage and the second voltage to the second connection unit . Wherein, the first voltage is between 3.2-1.1 volts, the second voltage is between 2.7-0.6 volts, the second connection unit transmits the first voltage and the second voltage to the smart phone, and the smart phone uses the first voltage and the second voltage The two voltages correspond to start a fast charging mode to receive the system voltage for charging. And the voltage difference between the first voltage and the second voltage is between 0.5-0.8 volts. In an embodiment of the present invention, the above-mentioned fast charging source starting unit includes a first resistor, a second resistor, a third resistor and a fourth resistor. The first terminal of the first resistor is coupled to the system voltage of the first connection unit, and the second terminal of the first resistor outputs the first voltage. The first terminal of the second resistor is coupled to the second terminal of the first resistor, and the second terminal of the second resistor is coupled to the ground voltage. A first end of the third resistor is coupled to the system voltage of the first connection unit, and a second end of the third resistor outputs a second voltage. The first terminal of the fourth resistor is coupled to the second terminal of the third resistor, and the second terminal of the fourth resistor is coupled to the ground voltage.

In an embodiment of the present invention, the above-mentioned first connection unit is a Universal Serial Bus (USB) connector, and the above-mentioned second connection unit is a Universal Serial Bus connection port.

In an embodiment of the present invention, the above-mentioned first voltage and second voltage are respectively transmitted to the smart phone through a first data pin and a second data pin of the second connection unit.

In an embodiment of the present invention, the above-mentioned first connection unit is an IEEE1394 connector, and the second connection unit is a USB connection port.

In an embodiment of the present invention, the above-mentioned first connection unit and the second connection unit are respectively connectors with power transmission or connection ports with power transmission.

In an embodiment of the present invention, the above-mentioned first connection unit and the second connection unit are connection interfaces of the same form or shape.

In an embodiment of the present invention, the above-mentioned first connection unit and the second connection unit are different types of connection interfaces.

Based on the above, in the fast charging device for smart phones of the present invention, the fast charging source conversion unit and the fast charging source activation unit provide the first voltage and the second voltage that can start the fast charging function of the smart phone. When the smart phone is coupled to the connection socket with power supply through the fast charging device, the smart phone will receive the first voltage and the second voltage to activate its fast charging function, thereby increasing the charging speed of the smart phone.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail together with the accompanying drawings.

Description of drawings

FIG. 1 is a system block diagram of a fast charging device for a smart phone according to an embodiment of the present invention.

FIG. 2 is a circuit diagram of the fast charging source conversion unit in FIG. 1 .

FIG. 3 is a system block diagram of a fast charging device for a smart phone according to another embodiment of the present invention.

Detailed ways

FIG. 1 is a system block diagram of a fast charging device for a smart phone according to an embodiment of the present invention. Please refer to FIG. 1 , in this embodiment, an iPhone is used as an example of the smart phone 20 . The fast charging device 100 includes a fast charging source conversion unit 110 , a first connection unit 120 and a second connection unit 130 . Wherein, the first connection unit 120 can be a joint, and can be a universal serial bus (Universal Serial Bus, USB) joint (that is, a joint with transmission power), to be inserted in the universal serial bus connection port ( That is, a connection socket with a power supply). At this moment, the first connection unit 120 is coupled to the motherboard 10 to receive the system voltage Vcc (ie, the voltage of the connection socket) of the motherboard 10 , wherein the system voltage Vcc can be the operating voltage or the standby voltage of the motherboard 10 .

On the other hand, the second connection unit 130 can be a connection port, and can be a USB connection port (that is, a connection port with transmission power), so that the connection line of the smart phone 20 can be connected with the second connection unit. 130 , so that the second connecting unit 130 is coupled to the smart phone 20 . Moreover, the second connection unit 130 is coupled to the first connection unit 120 to transmit the system voltage Vcc of the motherboard 10 to the smart phone 20 .

The fast charging source conversion unit 110 is coupled to the first connection unit 120 to receive the system voltage Vcc of the motherboard 10 , and coupled to the second connection unit 130 to provide the first voltage V1 and the second voltage V2 to the smart phone 20 . Wherein, the first voltage V1 is between 3.2-1.1 volts, the second voltage V2 is between 2.7-0.6 volts, and the voltage difference between the first voltage V1 and the second voltage V2 is between 0.5-0.8 volts. Moreover, the first voltage V1 and the second voltage V2 can enable the fast charging function of the smart phone 20 .

Further, the first voltage V1 of the fast charging source conversion unit 110 is transmitted to the first data pin DP1 of the second connection unit 130 to transmit the first voltage V1 to the smart phone 20 through the first data pin DP1 . Moreover, the second voltage V2 of the fast charging source conversion unit 110 is transmitted to the second data pin DP2 of the second connection unit 130 , so as to transmit the second voltage V2 to the smart phone 20 through the second data pin DP2 . Wherein, the first data pin DP1 may be a positive data (D+) pin of the USB port, and the second data pin DP2 may be a negative data (D-) pin of the USB port.

According to the above, when the smart phone 20 is coupled to the motherboard 10 through the fast charging device 100, the smart phone 20 will receive the first voltage V1 and the second voltage V2 supplied by the fast charging source conversion unit 110, and intelligently The mobile phone 20 receives the system voltage Vcc of the motherboard 10 through the first connection unit 120 and the second connection unit 130 . At this time, the smart phone 20 will be controlled by the first voltage V1 and the second voltage V2 to turn on its fast charging function, so that the smart phone 20 can receive the system voltage Vcc of the motherboard 100 to perform fast charging of the mobile phone battery. .

It is worth mentioning that the above-mentioned embodiment uses the motherboard as the device for providing power, but in other embodiments, an electronic device with a USB connection port can also be used as a device for providing power, for example, a device with a USB connection port charger or power supply. Moreover, the first connection unit 120 can also be an IEEE1394 connector, which is used to couple to the IEEE1394 connection port of the motherboard 10 to receive the system voltage Vcc of the motherboard 10 . In addition, the form of the second connection unit 130 can be changed corresponding to the connection line connector of the smart phone 20 . Moreover, the first connection unit 120 and the second connection unit 130 in the embodiment of the present invention may be connection interfaces of the same form (such as Universal Serial Bus or IEEE1394) or the same form (connector or connection port), or may be of different forms or Different forms of connection interfaces can be determined according to design requirements.

FIG. 2 is a circuit diagram of the fast charging source conversion unit in FIG. 1 . Please refer to FIG. 2 , in this embodiment, the fast charging source conversion unit 130 includes a first resistor R1 , a second resistor R2 , a third resistor R3 and a fourth resistor R4 . A first end of the first resistor R1 is coupled to the system voltage Vcc, and a second end of the first resistor R1 outputs a first voltage V1. The first terminal of the second resistor R2 is coupled to the second terminal of the first resistor R1, and the second terminal of the second resistor R2 is coupled to the ground voltage. A first end of the third resistor R3 is coupled to the system voltage Vcc, and a second end of the third resistor R3 outputs a second voltage V2. The first terminal of the fourth resistor R4 is coupled to the second terminal of the third resistor R3, and the second terminal of the fourth resistor is coupled to the ground voltage.

FIG. 3 is a system block diagram of a fast charging device for a smart phone according to another embodiment of the present invention. Please refer to FIG. 1 and FIG. 3 , in this embodiment, the difference is the switching switch 310 of the fast charging device 300 and the fast charging source activation unit 320 . The input terminal 311 of the switch 310 is coupled to the first connection unit 120 to receive the power of the first connection unit 120 (ie, the system voltage Vcc), and the first connection terminal 312 of the switch 310 is coupled to the second connection unit 130 to transmit the system voltage Vcc is connected to the second connection unit 130 , and the second connection terminal 313 of the switch 310 is coupled to the fast charging source activation unit 320 to determine whether to transmit the system voltage Vcc to the fast charging source activation unit 320 .

When the fast charging source activation unit 320 receives the system voltage Vcc, it uses the system voltage Vcc to provide the first voltage V1 and the second voltage V2 and transmits them to the second connection unit 130 . At this time, the first voltage V1 and the second voltage V2 will be transmitted to the smart phone 20 through the second connection unit 130 to enable the fast charging function of the smart phone 20, so that the smart phone 20 can use the system voltage Vcc to charge the battery of the smart phone 20. Perform fast charging. Wherein, the circuit structure of the fast charging source starting unit 320 is similar to that of the fast charging source switching unit 110 , and will not be repeated here.

To sum up, in the fast charging device for smart phones according to the embodiment of the present invention, the fast charging source converting unit and the fast charging source starting unit provide the first voltage and the second voltage that can start the fast charging function of the smart phone. When the smart phone is coupled to the connection socket of the motherboard (or the connection socket of the electronic device) through the fast charging device, the smart phone will receive the first voltage and the second voltage to activate its fast charging function, thereby improving the performance of the smart phone. charging speed.

Although the present invention has been disclosed as above with the embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims (9)

1. A fast charging device for a smart phone, characterized in that it comprises: a first connection unit, coupled to a connection socket with a power supply to receive a system voltage; A second connection unit, coupled to the smart phone: A switch having an input terminal, a first connection terminal and a second connection terminal, wherein the input terminal is coupled to the first connection unit, and the first connection terminal is coupled to the second connection unit; A fast charging source starting unit is to be coupled to the second connection end of the switch and the second connection unit to receive the system voltage of the first connection unit and provide a first voltage and a a second voltage to the second connection unit, wherein the first voltage is between 3.2-1.1 volts, the second voltage is between 2.7-0.6 volts, and the first voltage and the second voltage are The voltage difference between them is between 0.5-0.8 volts, the second connection unit transmits the system voltage, the first voltage and the second voltage to the smart phone, and the smart phone according to the first A voltage corresponding to the second voltage activates a fast charging mode to receive the system voltage for charging. 2. According to the fast charging device of smart mobile phone according to claim 1, it is characterized in that said fast charging source starting unit comprises: A first resistor, the first end of the first resistor is coupled to the system voltage of the first connection unit, and the second end of the first resistor outputs the first voltage; A second resistor, the first end of the second resistor is coupled to the second end of the first resistor, and the second end of the second resistor is coupled to a ground voltage; A third resistor, the first terminal of the third resistor is coupled to the system voltage of the first connection unit, and the second terminal of the third resistor outputs the second voltage: and A fourth resistor, the first terminal of the fourth resistor is coupled to the second terminal of the third resistor, and the second terminal of the fourth resistor is coupled to the ground voltage. 3. The fast charging device for smart phones according to claim 1, wherein the first connection unit is a USB connector, and the second connection unit is a USB connection port. 4. The fast charging device for smart phones according to claim 3, wherein the first voltage and the second voltage pass through a first data pin and a first data pin of the second connection unit respectively. Two data pins are sent to the smart phone. 5. The fast charging device for a smart phone according to claim 1, wherein the smart phone is an iPhone. 6 . The fast charging device for smart phones according to claim 1 , wherein the first connection unit is an IEEE1394 connector, and the second connection unit is a Universal Serial Bus connection port. 7 . The fast charging device for smart phones according to claim 1 , wherein the first connection unit and the second connection unit are respectively a connector with a power transmission or a connection port with a power transmission. 8. The fast charging device for smart phones according to claim 7, wherein the first connection unit and the second connection unit are connection interfaces of the same form or shape. 9. The fast charging device for smart phones according to claim 7, wherein the first connection unit and the second connection unit are different types of connection interfaces.