CN211958804U

CN211958804U - Multifunctional charging device and system

Info

Publication number: CN211958804U
Application number: CN202020319013.6U
Authority: CN
Inventors: 廖卓文
Original assignee: Guangdong Gopod Group Holding Co Ltd
Current assignee: Guangdong Gopod Group Holding Co Ltd
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2020-11-17
Anticipated expiration: 2030-03-13

Abstract

A first interface circuit and a second interface circuit are respectively externally connected with a first device and a second device, read and feed back first parameter information and second parameter information, transmit power supply signals and provide channel definition for data transmission. The main control circuit correspondingly outputs a control signal to the switch circuit according to the parameter information so as to correspondingly conduct the switch circuit; the switching circuit transmits a power supply signal to the voltage conversion circuit and controls the first equipment to charge the second equipment or controls the second equipment to charge the first equipment in a wired mode; the voltage conversion circuit converts the power supply signal into a working voltage signal and wirelessly charges the third device. Above-mentioned multi-functional charging device and system, through external first equipment of interface circuit and second equipment, can carry out wireless charging, carry out wired charging to the power receiver in first equipment and the second equipment to the third equipment, can realize data transmission simultaneously, compensated when charging to the use of equipment port, the function is diversified, and the practicality is high, and user experience degree is high.

Description

Multifunctional charging device and system

Technical Field

The utility model belongs to the technical field of charge, especially, relate to a multi-functional charging device and system.

Background

Along with the improvement of living standard of people, the use frequency of electronic equipment is higher and higher, and corresponding wireless charging technology is becoming more and more important. At present, the traditional wireless charging technology is limited to wireless charging of one electronic device by a wireless charger, and has no other functions, single function and low practicability; in addition, because the electronic device needs to occupy one interface when outputting power supply or charging, data transmission may not be performed while charging, and user experience is low.

Therefore, the conventional wireless charging technology has the problems of single function, incapability of data transmission, low practicability and low user experience caused by the fact that only one electronic device is wirelessly charged.

SUMMERY OF THE UTILITY MODEL

In view of this, the embodiment of the utility model provides a multifunctional charging device and system aims at solving and has been limited to carrying out wireless charging and the function singleness that leads to, can't carry out data transmission, the low problem of user experience degree of practicality to an electronic equipment among the traditional wireless charging technology.

The utility model provides a first aspect of the embodiment provides a multi-functional charging device, include:

the first interface circuit is externally connected with first equipment, and is configured to read and feed back first parameter information of the first equipment and transmit a power supply signal;

the second interface circuit is externally connected with second equipment, is connected with the first interface circuit, and is configured to read and feed back second parameter information of the second equipment, transmit the power supply signal and perform data transmission;

the switch circuit is connected with the interface circuit, is configured to be conducted according to the received control signal, transmits the power supply signal, and controls the first device to perform wired charging on the second device or controls the second device to perform wired charging on the first device;

the voltage conversion circuit is externally connected with third equipment supporting wireless charging, is connected with the switch circuit, is configured to convert the voltage of the power supply signal, outputs a working voltage signal and wirelessly charges the third equipment; and

and the master control circuit is connected with the interface circuit, the voltage conversion circuit and the switch circuit, is configured to receive the working voltage signal, correspondingly outputs the control signal according to the fed back first parameter information and the fed back second parameter information, and controls the first equipment and the second equipment to perform mutual data transmission.

A second aspect of the embodiments provides a multifunctional charging system, include:

a first device and a second device configured to perform mutual data transmission and to perform charging and discharging;

a third device configured to be charged by wireless charging; and

the multifunctional charging apparatus is connected to the first device, the second device, and the third device, and is configured to control the first device to supply power to the second device and the third device, or control the second device to supply power to the first device and the third device, and further configured to control data transmission between the first device and the second device.

According to the multifunctional charging device and the multifunctional charging system, the first interface circuit and the second interface circuit are respectively externally connected with the first equipment and the second equipment, the first parameter information and the second parameter information are read and fed back, the power supply signal is transmitted, and the channel is provided for data transmission between the first equipment and the second equipment. The main control circuit correspondingly outputs a control signal to the switch circuit according to the parameter information so as to correspondingly conduct the switch circuit; the switching circuit transmits a power supply signal to the voltage conversion circuit and controls the first equipment to charge the second equipment or controls the second equipment to charge the first equipment in a wired mode; the voltage conversion circuit converts the power supply signal into a working voltage signal and wirelessly charges the third device. Above-mentioned multi-functional charging device and system, through external first equipment of interface circuit and second equipment, can carry out wireless charging, carry out wired charging to the power receiver in first equipment and the second equipment to the third equipment, can realize data transmission simultaneously, compensated when charging to the use of equipment port, the function is diversified, and the practicality is high, and user experience degree is high.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic structural diagram of a multifunctional charging device according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a multifunctional charging device according to another embodiment of the present invention;

fig. 3 is a schematic diagram of exemplary circuits of a first interface circuit, a second interface circuit, a switch circuit, a sampling circuit, a protection circuit, and a serial port upgrade circuit in the multifunctional charging device shown in fig. 2;

fig. 4 is an exemplary circuit schematic of a voltage conversion circuit in the multi-functional charging device shown in fig. 1 or 2;

fig. 5 is a schematic circuit diagram of an example of a main control circuit in the multifunctional charging device shown in fig. 1 or 2.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Please refer to fig. 1, which is a schematic structural diagram of a multifunctional charging device according to an embodiment of the present invention, for convenience of description, only the parts related to the embodiment are shown, and the details are as follows:

a multifunctional charging device comprises a first interface circuit 10, a second interface circuit 20, a switch circuit 20, a voltage conversion circuit 30 and a main control circuit 40.

The first interface circuit 10 is externally connected to the first device 100, the second interface circuit 11 is externally connected to the second device 200, the switch circuit 20 is connected to the first interface circuit 10 and the second interface circuit 11, the voltage conversion circuit 30 is externally connected to the third device 300 supporting wireless charging and the switch circuit 20, and the main control circuit 40 is connected to the first interface circuit 10, the second interface circuit 11, the voltage conversion circuit 30 and the switch circuit 20.

The first interface circuit 10 is configured to read and feed back first parameter information of the first device 100, and transmit a power supply signal. The second interface circuit 11 is configured to read and feed back second parameter information of the second device 200, transmit the power supply signal, and perform data transmission.

Specifically, according to practical application, unidirectional or bidirectional data transmission may be performed between the first device 100 and the second device 200, and the first device 100 may perform unidirectional data transmission to the second device 200, the second device 200 may perform unidirectional data transmission to the first device 100, or the first device 100 and the second device 200 may perform data transmission to each other.

The parameter information of the first device 100 and the second device 200 includes information that the devices themselves belong to the power supply device or the power receiving device.

The power supply signal may be output from the first device 100 or the second device 200, and when the first device 100 and the second device 200 are connected to the first interface circuit 10 and the second interface circuit 11, respectively, only one of the devices supplies power to output the power supply signal, and the other device receives power to receive the power supply signal. When only the first device 100 or only the second device 200 is accessed, the accessed device is a power supply device and outputs a power supply signal.

The switching circuit 20 is configured to be turned on according to the received control signal, transmit the power supply signal, and control the first device 100 to perform wired charging of the second device 200 or control the second device 200 to perform wired charging of the first device 100.

Specifically, the switch circuit 20 is only used for transmitting the power supply signal and is not used for data transmission, and when data transmission is performed between the first device 100 and the second device 200, they are connected through the data transmission terminals in the first interface circuit 10 and the second interface circuit 11, and perform unidirectional or bidirectional data transmission.

In addition, the multifunctional charging apparatus provided in the present application does not necessarily have a data transmission process, and when any of the situations that the first device 100 and/or the second device 200 does not have a data transmission function, only has the first device 100 accessed, only has the second device 200 accessed, and the first device 100 and the second device 200 do not receive a data transmission instruction, etc., no data transmission occurs.

One of the advantages of this embodiment is: by using the multifunctional charging device, not only the third device 300 can be wirelessly charged, but also power can be supplied and received between the first device 100 and the second device 200, and data interaction can be performed while charging and supplying power, so that the multifunctional charging device is convenient and practical, diversified in function and flexible in application.

The voltage conversion circuit 30 is configured to perform voltage conversion on the power supply signal, output an operating voltage signal, and wirelessly charge the third device 300.

Specifically, the working signal output by the voltage conversion circuit 30 has at least two paths of outputs, wherein one path of the working signal is output to the third device 300 in a wireless transmission manner, and the other path of the working signal is output to the main control circuit 40 to supply power to the main control circuit 40. Optionally, the operating voltage signal is 5V.

The main control circuit 40 is configured to receive the operating voltage signal, output a control signal according to the fed back first parameter information and second parameter information, and control the first device and the second device to perform mutual data transmission.

Specifically, the main control circuit 40 determines the attributes of the first device 100 and the second device 200 according to the fed back parameter information, and accordingly outputs a control signal to correspondingly control the on state of the switch circuit 20.

Please refer to fig. 2, which is a schematic structural diagram of a multifunctional charging device according to another embodiment of the present invention, for convenience of description, only the parts related to the embodiment are shown, and the details are as follows:

in an optional embodiment, the multifunctional charging device further includes one or more of a protection circuit 50, a sampling circuit 60, and a serial port upgrade circuit 70.

The protection circuit 50 is connected to the switch circuit 20, the sampling circuit 60 is connected to the switch circuit 20 and the main control circuit 40, and the serial port upgrade circuit 70 is connected to the main control circuit 40, the first interface circuit 10, and the second interface circuit 11.

The protection circuit 50 is configured to freewheel during the switching on or off of the switching circuit 20, avoiding reverse breakdown of the switching circuit 20.

Specifically, when the switch circuit 20 is turned on or turned off, a reverse large current is easily generated, which causes circuit burnout and safety accidents, and the protection circuit 50 is added to prevent current sudden change, thereby playing a role in protection.

The sampling circuit 60 is configured to sample the power supply signal flowing through the switch circuit 20 and feed back the sampled signal to the main control circuit 40, so that the main control circuit 40 switches off the switch circuit 20 when the sampled signal is judged to exceed the preset threshold.

Specifically, the preset threshold includes two critical points, namely a lowest value and a highest value, and when the sampling signal reaches the lowest value, it indicates that the electric quantity of the first device 100 or the second device 200 is insufficient, and the first device continues to output the signal to the outside or damages the devices, so that the switch circuit 20 is cut off in time to protect the devices. When the sampling signal reaches the maximum value, an abnormal large current may occur in the circuit, and if the sampling signal is not cut off in time, the circuit elements and even the equipment may be damaged, so that the switch circuit 20 also needs to be cut off in time to improve the safety.

The serial port upgrade circuit 70 is configured to debug or perform serial port upgrade upon receiving the upgrade signal.

Referring to fig. 3, an exemplary schematic circuit diagram of the first interface circuit 10, the second interface circuit 11, the switch circuit 20, the sampling circuit 60, the protection circuit 50, and the serial port upgrade circuit 70 in the multifunctional charging device shown in fig. 2 is shown, and for convenience of description, only the parts related to the present embodiment are shown, and the following details are described below:

in an alternative embodiment, the first interface circuit 10 and the second interface circuit 11 are respectively implemented by a USB interface J1 and a USB interface J2. The USB interface may be a male connector or a female connector, and the first interface circuit 10 and the second interface circuit 11 may be both a USB male connector or a USB female connector, or may be both a male connector and a female connector. A power supply end Vbus of the USB interface is connected with the switch circuit; and the data end D +, D-, RX1+, RX1-, RX2+, RX2-, TX1+, TX1-, TX2+, TX 2-of the J1 corresponds to the data end D +, D-, RX1+, RX1-, RX2+, RX2-, TX1+, TX1-, TX2+ and TX 2-of the J2, so that data transmission between the first device and the second device is realized.

Similarly, the first interface circuit 10 and the second interface circuit 11 can also be implemented by TYPE-C interfaces, which can be male or female.

It should be noted that the designations of the first device 100 and the second device 200 are only for convenience of description, and in actual operation, the J1 may be connected to the second device 200, and the J2 may be connected to the first device 100, which does not affect the normal operation of the circuit of the present application.

In an alternative embodiment, the switch circuit 20 includes a first transistor Q1, a second transistor Q2, a first resistor R4, a second resistor R2, a third resistor R5, and a fourth resistor R3.

The drain of the first transistor Q1 and the drain of the second transistor Q2 are connected to the first interface circuit 10 and the second interface circuit 11, respectively, and the source of the first transistor Q1 and the source of the second transistor Q2 are connected to the voltage converting circuit 30.

The gate of the first transistor Q1 is connected to the first end of the first resistor R4, the source of the first transistor Q1 is connected to the first end of the second resistor R2, and the second end of the first resistor R4 and the second end of the second resistor R2 are connected to the main control circuit 40.

The gate of the second transistor Q2 is connected to the first end of the third resistor R5, the source of the second transistor Q2 is connected to the first end of the fourth resistor R3, and the second end of the third resistor R5 and the second end of the fourth resistor R3 are connected to the main control circuit 40.

Optionally, the first transistor Q1 and the second transistor Q2 are implemented by PMOS transistors. The gates and sources of the first transistor Q1 and the second transistor Q2 are respectively connected to the main control circuit 40 through resistors, and receive the control signal output by the main control circuit 40 to be correspondingly turned on.

Specifically, when only the first device 100 is accessed and the second device 200 is not accessed, the main control circuit 40 only receives and determines the parameter information of the first device 100, and correspondingly controls to turn on the first transistor Q1, so that the first device 100 supplies power to the accessed third device 300.

When only the second device 200 is accessed and the first device 100 is not accessed, the main control circuit 40 only receives and determines the parameter information of the second device 200, and correspondingly controls to turn on the second transistor Q2, so that the second device 200 supplies power to the accessed third device 300.

When both the first device 100 and the second device 200 are connected, the main control circuit 40 receives and determines the parameter information of the two devices, determines one of the two devices as a power supply device and the other device as a power receiving device, and correspondingly controls the first transistor Q1 and the second transistor Q2 to be simultaneously turned on, so that the power supply device supplies power to the third device 300 and the power receiving device.

In an alternative embodiment, the protection circuit 50 includes a first schottky diode D1 and a second schottky diode D2.

An anode of the first schottky diode D1 is connected to the drain of the first transistor Q1, and a cathode of the first schottky diode D1 is connected to the source of the first transistor Q1; the anode of the second schottky diode D2 is connected to the drain of the second transistor Q2, and the cathode of the second schottky diode D2 is connected to the source of the second transistor Q2.

Specifically, the reverse recovery time of the schottky diode is extremely short, the transistor can be subjected to follow current protection, the schottky diode is connected in parallel to the drain electrode and the source electrode of the transistor and is used as a supplement of a parasitic diode inside the transistor, and the circuit 50 can be protected from being influenced by sudden current, so that the transistor is subjected to reverse breakdown, and the service life of the transistor is prolonged.

In an alternative embodiment, the sampling circuit 60 includes a ninth resistor R1 and a tenth resistor R6.

The first end of the ninth resistor R1 is connected to the switch circuit 20, the second end of the ninth resistor R1 and the first end of the tenth resistor R6 are connected to the main control circuit 40, and the second end of the tenth resistor R6 is grounded.

Specifically, the sampling circuit 60 is connected to the source junction VBUS-IN of the first transistor Q1 and the second transistor Q2, and the junction VBUS-IN is subjected to voltage sampling and fed back to the main control circuit 40, so that the circuit and the equipment are prevented from being damaged due to too large or too small voltage IN the circuit, and the safety and the stability of the circuit are improved.

Referring to fig. 4, a schematic circuit diagram of an example of the voltage converting circuit 30 in the multifunctional charging device shown in fig. 1 or 2 is shown, and for convenience of description, only the parts related to the present embodiment are shown, and detailed descriptions are as follows:

in an optional embodiment, the voltage conversion circuit 30 includes a voltage conversion chip U2, an inductor L1, a fifth resistor R18, a sixth resistor R20, a seventh resistor R14, an eighth resistor R15, a first capacitor C8, a second capacitor C9, a third capacitor C10, a fourth capacitor C11, and a transient suppression diode D3.

An input end VIN of the voltage conversion chip U2 is connected to the switch circuit 20, and a first end of the first capacitor C8, a first end of the second capacitor C9, a first end of the fifth resistor R18, and the input end VIN of the voltage conversion chip U2 are connected in common; the second terminal of the fifth resistor R18, the first terminal of the sixth resistor R20 and the enable terminal EN of the voltage converting chip U2 are connected in common.

The feedback terminal FB of the voltage conversion chip U2, the first terminal of the seventh resistor R14 and the first terminal of the eighth resistor R15 are connected in common; the output end SW of the voltage conversion chip U2, the cathode of the transient suppression diode D3 and the first end of the inductor L1 are connected in common, and the second end of the inductor L1, the second end of the eighth resistor R15, the first end of the third capacitor C10 and the first end of the fourth capacitor C11 are connected in common; a second terminal of the inductor L1, serving as the output terminal SW of the voltage conversion circuit 30, is connected to the main control circuit 40, and is configured to output an operating voltage signal and wirelessly charge the third device 300.

The second end of the first capacitor C8, the second capacitor C9, the second end of the sixth resistor R20, the second end of the seventh resistor R14, the anode of the transient suppression diode D3, the second end of the third capacitor C10, and the second end of the fourth capacitor C11 are grounded.

Specifically, the input terminal VIN of the voltage conversion chip U2 is connected to the connection node VBUS-IN of the first transistor Q1 and the second transistor Q2, and the working voltage signal converted by the voltage conversion circuit 30 is output by at least two paths, wherein one path is output to the third device 300 IN a wireless transmission manner, and the other path is output to the main control circuit 40 to supply power to the main control circuit 40. Optionally, the operating voltage signal is 5V.

It should be noted that fig. 4 does not show the components for wirelessly charging the third device 300, because the present application employs any one of the existing electromagnetic induction technology, electromagnetic resonance technology, radio wave technology or electric field coupling technology, which can be obtained by those skilled in the art through reference to the data.

Fig. 5 is a schematic circuit diagram of an example of the main control circuit 40 in the multifunctional charging device shown in fig. 1 or 2, which only shows the relevant parts of the present embodiment for convenience of description, and the following details are described below:

in an optional embodiment, the main control circuit 40 is implemented by using a single chip or a central controller U1.

The single chip microcomputer or central controller U1 includes a first signal receiving terminal C0_ CC1, a second signal receiving terminal C1_ CC1, a first enable terminal C1_ VEN, a second enable terminal C0_ VEN and a power supply terminal VDD. Of course, it may also include other ports, such as a sampling end VDET, a serial control end UART _ RX and UART _ TX, etc., which are not described in detail herein.

The first signal receiving terminal C0_ CC1 is connected to the first interface circuit 10, the second signal receiving terminal C1CC1 is connected to the second interface circuit 11, and the power supply terminal VDD is connected to the voltage converting circuit 30; the first enable terminal C1_ VEN and the second enable terminal C0_ VEN are connected to the switch circuit 20.

The first signal receiving terminal C0_ CC1 is configured to receive parameter information of the first device 100, the second signal receiving terminal C1_ CC1 is configured to receive parameter information of the second device 200, and the first enable terminal C1_ VEN and the second enable terminal C0_ VEN are configured to output control signals to control the on state of the switch circuit 20; the power terminal VDD is configured to receive an operating voltage signal.

Specifically, the first signal receiving terminal C0_ CC1 and the second signal receiving terminal C1_ CC1 are respectively connected to the USB interfaces J1 and J2, specifically, the signal receiving terminal C1 of the USB interface J1 and the signal receiving terminal CC1 of the USB interface J2 are respectively connected to the first signal receiving terminal C0_ CC1 and the second signal receiving terminal C1_ CC1, which only shows one form in fig. 5.

Specifically, the first enable terminal C1_ VEN is connected to the gate and the source of the first transistor Q1 through a first resistor R4 and a second resistor R2, and the second enable terminal C0_ VEN is connected to the gate and the source of the second transistor Q2 through a third resistor R5 and a fourth resistor R3. The first enable terminal C1_ VEN and the second enable terminal C0_ VEN are both configured to output a control signal to turn on the first transistor Q1 and/or the second transistor Q2.

The embodiment of the present application further provides a multifunctional charging system, which includes a first device 100, a second device 200, a third device 300, and the multifunctional charging apparatus described above.

The first device 100 or the second device 200 is configured to perform mutual data transmission and perform charging and discharging.

The third device 300 is configured to be charged by means of wireless charging.

The multifunctional charging apparatus is connected to the first device 100, the second device 200, and the third device 300, and is configured to control the first device 100 to supply power to the second device 200 and the third device 300, or control the second device 200 to supply power to the first device 100 and the third device 300, and further control data transmission between the first device 100 and the second device 200.

Specifically, the multifunctional charging system provided by the present embodiment may have only the first device 100 and no second device 200; it is also possible to have only the second device 200 without the first device 100; it is also possible to have both the first device 100 and the second device 200.

The multifunctional charging system provided by the application does not necessarily have a data transmission process, and when any one of the situations that the first device 100 and/or the second device 200 does not have a data transmission function, only has the first device 100 accessed, only has the second device 200 accessed, and the first device 100 and the second device 200 do not receive a data transmission instruction, and the like exists, data transmission does not occur.

One of the advantages of this embodiment is: this multi-functional charging system not only makes third equipment 300 can carry out wireless charging, can supply power and receive the electricity between first equipment 100 and the second equipment 200 moreover to can also carry out data interaction when charging and supplying power, convenient and practical, function diversification, use in a flexible way.

The power supply signal may be output from the first device 100 or the second device 200, and when the first device 100 and the second device 200 are simultaneously connected to the circuit, only one of the devices supplies power to output the power supply signal, and the other device receives power to receive the power supply signal. When only the first device 100 or only the second device 200 is connected to the circuit, the connected device is a power supply device, and outputs a power supply signal.

Optionally, the first device 100 is implemented by any one of a computer, a notebook, a palm computer, a learning machine, or a smart phone; the second device 200 is implemented by any one or more of a mobile charging power supply, a power adapter and a charging pile; at this time, the first device 100 is configured to discharge, provide a power supply signal, and perform data transmission with the second device 200. In the above case, the first apparatus 100 functions as a power receiving apparatus, and the second apparatus 200 functions as a power supply apparatus.

Optionally, the first device 100 is implemented by using any one or more of a mobile charging power supply, a power adapter, and a charging pile; the second device 200 is implemented by any one of a computer, a notebook, a palm computer, a learning machine, or a smart phone; at this time, the second device 200 is configured to discharge, provide a power supply signal, and perform data transmission with the first device 100. In the above case, the second apparatus 200 functions as a power receiving apparatus, and the first apparatus 100 functions as a power supply apparatus.

Optionally, the third device 300 is implemented by any one of a smart watch, a computer, a notebook, a palm computer, a learning machine, or a smart phone supporting wireless charging. In practical applications, the third device 300 is an apple watch.

To sum up, the application provides a multi-functional charging device and system, first interface circuit and second interface circuit external first equipment and second equipment respectively, read and feed back first, second parameter information to transmit power supply signal, provide the passageway and carry out data transmission for between first equipment and the second equipment. The main control circuit correspondingly outputs a control signal to the switch circuit according to the parameter information so as to correspondingly conduct the switch circuit; the switching circuit transmits a power supply signal to the voltage conversion circuit and controls the first equipment to charge the second equipment or controls the second equipment to charge the first equipment in a wired mode; the voltage conversion circuit converts the power supply signal into a working voltage signal and wirelessly charges the third device. Above-mentioned multi-functional charging device and system, through external first equipment of interface circuit and second equipment, can carry out wireless charging, carry out wired charging to the power receiver in first equipment and the second equipment to the third equipment, can realize data transmission simultaneously, compensated when charging to the use of equipment port, the function is diversified, and the practicality is high, and user experience degree is high.

Various embodiments are described herein for various circuits and systems. Numerous specific details are set forth in order to provide a thorough understanding of the overall structure, function, manufacture, and use of the embodiments as described in the specification and illustrated in the accompanying drawings. However, it will be understood by those skilled in the art that the embodiments may be practiced without such specific details. In other instances, well-known operations, components and elements have been described in detail so as not to obscure the embodiments in the description. It will be appreciated by those of ordinary skill in the art that the embodiments herein and shown are non-limiting examples, and thus, it can be appreciated that the specific structural and functional details disclosed herein may be representative and do not necessarily limit the scope of the embodiments.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A multifunctional charging device, comprising:

and the main control circuit is connected with the first interface circuit, the second interface circuit, the voltage conversion circuit and the switch circuit, is configured to receive the working voltage signal, correspondingly outputs the control signal according to the fed back first parameter information and the fed back second parameter information, and controls the first equipment and the second equipment to perform mutual data transmission.

2. The multi-functional charging device of claim 1, further comprising:

and the protection circuit is connected with the switching circuit and is configured to carry out free-wheeling in the process of switching on or switching off the switching circuit.

3. The multi-functional charging device of claim 1, further comprising:

the sampling circuit is connected with the switch circuit and the main control circuit and is configured to sample the power supply signal flowing through the switch circuit and feed back the sampling signal to the main control circuit, so that the main control circuit can cut off the switch circuit when judging that the sampling signal exceeds a preset threshold value.

4. The multifunctional charging device according to claim 1, wherein said first interface circuit and said second interface circuit are implemented by USB or TYPE-C interfaces, said USB or TYPE-C interfaces are male or female, and a power source terminal of said USB or TYPE-C interfaces is connected to said switch circuit.

5. The multi-functional charging device of claim 2, wherein said switching circuit comprises:

the circuit comprises a first transistor, a second transistor, a first resistor, a second resistor, a third resistor and a fourth resistor;

the drain electrode of the first transistor is connected with the first interface circuit, the drain electrode of the second transistor is connected with the second interface circuit, and the source electrode of the first transistor and the source electrode of the second transistor are connected with the voltage conversion circuit after being connected in common;

the grid electrode of the first transistor is connected with the first end of the first resistor, the source electrode of the first transistor is connected with the first end of the second resistor, and the second end of the first resistor and the second end of the second resistor are connected in common and then connected into the main control circuit;

the grid electrode of the second transistor is connected with the first end of the third resistor, the source electrode of the second transistor is connected with the first end of the fourth resistor, and the second end of the third resistor and the second end of the fourth resistor are connected in common and then connected into the main control circuit.

6. The multi-functional charging device of claim 5, wherein said protection circuit comprises:

a first Schottky diode and a second Schottky diode;

the anode of the first Schottky diode is connected with the drain of the first transistor, and the cathode of the first Schottky diode is connected with the source of the first transistor; the anode of the second Schottky diode is connected with the drain of the second transistor, and the cathode of the second Schottky diode is connected with the source of the second transistor.

7. The multi-functional charging device of claim 1, wherein said voltage conversion circuit comprises:

the transient suppression circuit comprises a voltage conversion chip, a first inductor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor and a transient suppression diode;

the input end of the voltage conversion chip is connected with the switch circuit, and the first end of the first capacitor, the first end of the second capacitor, the first end of the fifth resistor and the input end of the voltage conversion chip are connected in common; the second end of the fifth resistor, the first end of the sixth resistor and the enable end of the voltage conversion chip are connected in common; the feedback end of the voltage conversion chip, the first end of the seventh resistor and the first end of the eighth resistor are connected in common; an output end of the voltage conversion chip, a cathode of the transient suppression diode and a first end of the first inductor are connected in common, and a second end of the first inductor, a second end of the eighth resistor, a first end of the third capacitor and a first end of the fourth capacitor are connected in common; the second end of the first inductor is used as the output end of the voltage conversion circuit, is connected with the main control circuit, and is configured to output the working voltage signal and wirelessly charge the third device;

the second end of the first capacitor, the second end of the sixth resistor, the second end of the seventh resistor, the anode of the transient suppression diode, the second end of the third capacitor, and the second end of the fourth capacitor are grounded.

8. The multi-functional charging device of claim 3, wherein the sampling circuit comprises:

a ninth resistor and a tenth resistor;

the first end of the ninth resistor is connected with the switch circuit, the second end of the ninth resistor and the first end of the tenth resistor are connected to the main control circuit in a common mode and then connected to the ground, and the second end of the tenth resistor is connected to the ground.

9. The multifunctional charging device according to claim 1, wherein the main control circuit is implemented by a single chip microcomputer or a central controller;

the single chip microcomputer or the central controller comprises a first signal receiving end, a second signal receiving end, a first enabling end, a second enabling end and a power supply end;

the first signal receiving end and the second signal receiving end are respectively connected with the first interface circuit and the second interface circuit, the first enabling end and the second enabling end are both connected with the switch circuit, and the power supply end is connected with the voltage conversion circuit;

the first signal receiving end is configured to receive parameter information of the first device, the second signal receiving end is configured to receive parameter information of the second device, and the first enabling end and the second enabling end are configured to output the control signal to control the conducting state of the switch circuit; the power terminal is configured to receive the operating voltage signal.

10. The multi-functional charging device of claim 1, further comprising:

and the serial port upgrading circuit is connected with the main control circuit, the first interface circuit and the second interface circuit and is configured to debug or upgrade a serial port when an upgrading signal is received.

11. A multifunctional charging system, comprising:

a third device configured to be charged by wireless charging; and

the multi-functional charging apparatus according to claim 1, connected to the first device, the second device, and the third device, the multi-functional charging apparatus being configured to control the first device to supply power to the second device and the third device, or to control the second device to supply power to the first device and the third device, and further being configured to control data transmission between the first device and the second device.

12. The multifunctional charging system according to claim 11,

the first equipment is realized by any one of a computer, a notebook, a palm computer, a learning machine or a smart phone;

the second equipment is realized by adopting any one or more of a mobile charging power supply, a power adapter and a charging pile;

and, the first device is configured to discharge and to communicate data with the second device.

13. The multifunctional charging system according to claim 11,

the first equipment is realized by adopting any one or more of a mobile charging power supply, a power adapter and a charging pile;

the second device is realized by any one of a computer, a notebook, a palm computer, a learning machine or a smart phone;

and the second device is configured to discharge and to communicate data with the first device.

14. The multifunctional charging system according to claim 11,

the third device is realized by any one of a smart watch, a computer, a notebook, a palm computer, a learning machine or a smart phone which supports wireless charging.