CN213959785U

CN213959785U - Integrated multichannel USB charging device

Info

Publication number: CN213959785U
Application number: CN202022716875.5U
Authority: CN
Inventors: 李耀明
Original assignee: Zhuhai Spark Electronic Equipment Co ltd
Current assignee: Zhuhai Spark Electronic Equipment Co ltd
Priority date: 2020-11-20
Filing date: 2020-11-20
Publication date: 2021-08-13
Anticipated expiration: 2030-11-20

Abstract

The utility model provides an integrated multichannel USB charging device, it includes the casing, the casing inner chamber is equipped with multichannel USB charging mechanism, multichannel USB charging mechanism includes the PCB board, wind channel separation frame and switching power supply, a plurality of USB interfaces have been seted up on the PCB board, housing face seted up with a plurality of USB interface assorted opening array, the wind channel separation frame is located between PCB board and switching power supply for the regional heat dissipation wind channel of the low pressure that the high pressure region that isolator power supply located and PCB board were located is regional. Use the utility model discloses integrated multichannel delivery outlet, the design of inside independent wind channel can effectual reduction device volume, improve security and thermal diffusivity, can effectual reduction in production cost, promote production efficiency, improve production security and product quality.

Description

Integrated multichannel USB charging device

Technical Field

The utility model relates to a power electronic technology field especially relates to an integrated multichannel USB charging device.

Background

At present, electronic products using a rechargeable battery built in a USB charging interface are more and more popular with consumers due to their comprehensive functions and portability. In the manufacturing process of products, it is often necessary to use a USB charging device to charge an electronic device having a built-in rechargeable battery.

Poor charging devices may cause irreparable damage to batteries and products, even bring about potential safety hazards, and in order to ensure good charging effect and safety, the output voltage, current, heat productivity and charger efficiency of the USB charging device need to be strictly controlled. Meanwhile, because products are various in types and specifications, and different products have different requirements on the charging device, in order to meet the requirements of mass production, reduce the production cost and improve the production efficiency, the universality and the usability of the USB charging device are also the problems which need to be mainly solved.

Because the conventional USB charger cannot meet the requirements of voltage, current, efficiency, heat productivity, universality, usability and safety in the production of electronic products, an integrated multi-channel USB charging device capable of meeting the requirements at the same time needs to be designed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can support many USB interfaces to charge to integrated multichannel USB charging device that can the self-adaptation power transform.

In order to realize above-mentioned main purpose, the utility model provides a pair of integrated multichannel USB charging device, which comprises a housin, the casing inner chamber is equipped with multichannel USB charging mechanism, multichannel USB charging mechanism includes PCB board, wind channel separate shelf and switching power supply, a plurality of USB interfaces have been seted up on the PCB board, housing face seted up with a plurality of USB interface assorted opening array, the wind channel separate shelf locate the PCB board with between the switching power supply, be used for keeping apart the high pressure region that switching power supply located with the regional heat dissipation wind channel of low pressure that the PCB board was located.

In a further scheme, the shell comprises an upper cover and a bottom cover, the upper cover and the bottom cover are covered to form the inner cavity of the shell, and the opening array is arranged on the surface of the upper cover.

In a further scheme, the PCB comprises a PCB upper cover fixing frame, a main control panel and a PCB air channel separation frame fixing frame, the main control panel is provided with a plurality of USB interfaces, the PCB upper cover fixing frame is fixedly connected to the upper cover and a plurality of USB interfaces are in one-to-one correspondence with the opening arrays on the surface of the upper cover, and the main control panel is fixedly connected to the PCB air channel separation frame fixing frame.

In a further scheme, two sides of the bottom cover are provided with heat dissipation fans, and the heat dissipation fans are embedded and installed on two sides of the bottom cover.

In a further scheme, a power switch socket is arranged on one side of the bottom cover, and the power switch socket is embedded in one side of the bottom cover and electrically connected with the switch power supply.

In a further aspect, the PCB upper cover fixing frame includes a first fixing frame main body and a plurality of first fastening portions disposed on the first fixing frame main body.

In a further aspect, the PCB air duct separation frame fixing frame includes a second fixing frame main body and a plurality of second fastening portions disposed on the second fixing frame main body.

In a further scheme, the main control board comprises a switching power supply circuit, an output control circuit and a USB output interface, wherein the input end of the switching power supply circuit is connected with an alternating current power supply, the output end of the switching power supply circuit is connected with the output control circuit, and a quick charging circuit is connected between the output control circuit and the USB output interface.

In a further scheme, the quick charging circuit comprises a quick charging voltage adaptation feedback circuit and a quick charging protocol communication circuit, the quick charging protocol communication circuit communicates with the charging equipment through the USB output interface, and the quick charging voltage adaptation feedback circuit detects a charging signal of the charging equipment at the USB output interface and outputs a current and voltage feedback signal to the output control circuit.

Therefore, the utility model provides a pair of integrated multichannel USB charging device adopts the unification of multichannel delivery outlet, the design of inside independent wind channel, can effectual reduction device volume, improves security and thermal diffusivity, can effectual reduction in production cost, promotes production efficiency, improves production security and product quality.

In addition, the self-adaptive control mode is adopted, the voltage and the current required by the charged electronic equipment can be automatically and accurately controlled, the universal and easy-to-use characteristics are realized, and meanwhile, the charging efficiency and the safety are ensured.

Therefore, the utility model discloses to the unable requirement to voltage, electric current, efficiency, calorific capacity, commonality, ease of use and security in satisfying electronic product production simultaneously of traditional USB charger, provide an integrated multichannel USB charging device in order to solve above-mentioned problem, satisfy the needs of electronic equipment production.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the integrated multi-channel USB charging device of the present invention.

Fig. 2 is an exploded perspective view of an embodiment of the integrated multi-channel USB charging device of the present invention.

Fig. 3 is a left side view of an embodiment of the present invention.

Fig. 4 is a right side view of an embodiment of the present invention.

Fig. 5 is a top view of an embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a main control board in an embodiment of the integrated multi-channel USB charging device of the present invention.

Fig. 7 is a schematic structural diagram of a PCB upper cover fixing frame in an embodiment of the integrated multi-channel USB charging device of the present invention.

Fig. 8 is a schematic circuit diagram of a main control board in an embodiment of the integrated multi-channel USB charging device of the present invention.

Fig. 9 is a schematic circuit diagram of an output control circuit in an embodiment of the integrated multi-channel USB charging device of the present invention.

The present invention will be further explained with reference to the drawings and examples.

Detailed Description

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined below to clearly and completely describe the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.

Referring to fig. 1 to 5, the utility model discloses an integrated multichannel USB charging device, including casing 11, the casing inner chamber is equipped with multichannel USB charging mechanism, and multichannel USB charging mechanism includes the PCB board, wind channel separation frame 5 and switching power supply 6, has seted up a plurality of USB interfaces 13 on the PCB board, casing 11 surface seted up with a plurality of USB interfaces 13 assorted opening array 12, wind channel separation frame 5 is located between PCB board and switching power supply 6 for the regional heat dissipation wind channel of the low pressure that high pressure region that isolator power supply 6 located and PCB board were located.

In the embodiment, the housing 11 includes an upper cover 1 and a bottom cover 7, the upper cover 1 and the bottom cover 7 cover to form a housing inner cavity, and the opening array 12 is disposed on the surface of the upper cover 1.

In this embodiment, the PCB includes PCB upper cover mount 2, main control panel 3, PCB wind channel separator mount 4, is equipped with a plurality of USB interfaces 13 on the main control panel 3, through 2 fixed connection in upper cover 1 of PCB upper cover mount, a plurality of USB interfaces 13 and the 12 one-to-one of opening array on 1 surface of upper cover, and main control panel 3 passes through 4 fixed connection in wind channel separator 5 of PCB wind channel separator mount.

In this embodiment, heat dissipation fans, such as a heat dissipation fan 8 and a heat dissipation fan 9, are disposed on two sides of the bottom cover 7, and the heat dissipation fan 8 and the heat dissipation fan 9 are respectively embedded on two sides of the bottom cover 7.

In this embodiment, a power switch socket 10 is disposed on one side of the bottom cover 7, and the power switch socket 10 is embedded in one side of the bottom cover 7 and electrically connected to the switching power supply 6.

Further, the PCB upper cover fixing frame 2 includes a first fixing frame main body and a plurality of first fastening portions 21 disposed on the first fixing frame main body.

Further, the PCB air duct separation frame fixing frame 4 includes a second fixing frame main body and a plurality of second fastening portions disposed on the second fixing frame main body.

Specifically, the integrated multi-channel USB charging device of this embodiment includes an upper cover 1, a PCB upper cover fixing frame 2, a main control board 3, a PCB air duct separating frame fixing frame 4, an air duct separating frame 5, a switching power supply 6, a bottom cover 7, a heat dissipation fan 8, a heat dissipation fan 9, a power switch socket 10, and a chassis.

In this embodiment, the air duct separation frame 5 separates the heat dissipation air duct in the high-pressure region and the low-pressure region of the inner cavity of the housing, so that mutual heat convection between the heat dissipation air duct and the heat dissipation air duct does not occur, thereby enhancing the heat dissipation performance, protecting the electronic components and prolonging the service life of the device.

The working principle of the device is as follows: the device is plugged with a power line and a power switch is turned on, the device to be charged is connected with the device by using a USB (universal serial bus) line, the device can provide USB standard voltage 5V for charging the device to be charged, and meanwhile, the quick charging protocol chip FP6601Q on the main control board 3 and the device to be charged carry out handshake communication. After the communication is completed, the quick charging protocol chip can identify the quick charging voltage and current which are most suitable for the current equipment to be charged, and automatically adjust the output voltage and current of the USB interface 13 of the device to the most suitable voltage and current values, so that the equipment to be charged can be charged quickly and safely.

In practical application, the device to be charged can be some intelligent terminals supporting a quick-charging protocol, such as a portable lossless music player (N6 MK2 portable lossless music player), and the N6 MK2 portable lossless music player supports a QC3.0 quick-charging protocol, and the optimal charging specification is DC9V 1.5.5A Max, and when the device is used in batch production, a plurality of products can be charged simultaneously, so that the production requirements are met.

The charging process of the device is as follows: the integrated multi-path USB charging device is connected with an AC220V power supply, a power switch of the charging device is turned on, a device to be charged (such as N6 MK2) is connected with the charging device through a USB wire, the device can firstly charge the device to be charged by providing DC5V standard charging voltage, meanwhile, a quick charging protocol chip FP6601Q of a main control board 3 carries out handshake communication with the device to be charged, after the communication is finished, the quick charging protocol chip identifies the quick charging voltage and current (such as DC9V 1.5A) which are most suitable for the device to be charged, and automatically adjusts the output voltage and current of a USB interface 13 of the device to the most suitable values, so that the device to be charged can be charged quickly and safely.

Referring to fig. 8 and 9, the main control board 3 includes a switching power supply circuit 51, an output control circuit 52, and a plurality of USB interfaces 13(J3), an input terminal of the switching power supply circuit 51 is connected to an ac power supply, an output terminal of the switching power supply circuit 51 is connected to the output control circuit 52, and a fast charging circuit is connected between the output control circuit 52 and the USB interfaces 13.

In this embodiment, the fast charging circuit includes a fast charging voltage adaptation feedback circuit 54 and a fast charging protocol communication circuit 55, the fast charging protocol communication circuit 55 communicates with the charging device through the USB interface 13, and the fast charging voltage adaptation feedback circuit 54 detects a charging signal of the charging device at the USB interface 13 and outputs a current and voltage feedback signal to the output control circuit 52.

The fast charging voltage adaptation feedback circuit 54 detects an output voltage signal of the USB interface 13, and outputs a voltage feedback signal to the output control circuit 52.

The switching power supply circuit 51 outputs a switching power supply to the output control circuit 52, and the output control circuit 52 controls the output voltage of the USB interface 13 according to the received current-voltage feedback signal and the voltage feedback signal.

In the present embodiment, the main control board 3 further includes an output state indicating circuit 56, and the output state indicating circuit 56 is connected to the output control circuit 52. The output status indicating circuit 56 includes a resistor R11 and a light emitting diode D2, wherein a second end of the resistor R11 is connected to an anode of the light emitting diode D2, and a cathode of the light emitting diode D2 is grounded.

In the present embodiment, the main control board 3 further includes an input power status indicator circuit 57, and the input power status indicator circuit 57 is connected to the output control circuit 52. The input power state indicating lamp circuit 57 comprises a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a light emitting diode D4, a light emitting diode D5 and a triode Q1, wherein a first end of the resistor R9 is connected with a first end of the resistor R8 and a first end of the resistor R10, a second end of the resistor R9 is connected with a first end of the resistor R7, a second end of the resistor R7 is connected with a first end of the resistor R6 and a base of the triode Q1, a second end of the resistor R6 is connected with an emitter of the triode Q1, a second end of the resistor R10 is connected with an anode of the light emitting diode D4, a cathode of the light emitting diode D4 is grounded, a second end of the resistor R8 is connected with an anode of the light emitting diode D5, and a cathode of the light emitting diode D5 is connected with a collector of the triode Q1.

In this embodiment, the output control circuit 52 includes a control chip U1, a power input circuit, and an output circuit, the feedback control terminal FB of the control chip U1 is connected to the fast charging voltage adaptation feedback circuit 54, the output terminal of the switching power supply circuit 51 is connected to the enable terminal EN of the control chip U1 through the power input circuit, and the output terminal BS of the control chip U1 is connected to the USB interface 13 through the output circuit. The control chip U1 is a TD2786 chip, the power input circuit includes a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C7, a capacitor C11, a capacitor C18, a resistor R1, a resistor R4 and the like, and the output circuit includes a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C16, a capacitor C17, a resistor R3, a resistor R5 and the like.

In this embodiment, the fast charging protocol communication circuit 55 includes a USB interface chip U3, wherein the USB interface chip U3 is a fast charging protocol chip FP 6601Q.

In this embodiment, the fast charging voltage adaptive feedback circuit 54 includes a feedback resistor R2, one end of the feedback resistor R2 is connected to the feedback control terminal FB of the control chip U1 and the feedback terminal FB0 of the USB interface chip U3, and the other end of the feedback resistor R2 is grounded.

It should be noted that the above is only the preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto, and all the insubstantial modifications made by using the design concept of the present invention also fall within the protection scope of the present invention.

Claims

1. An integrated multi-channel USB charging device, comprising:

the USB charging device comprises a shell, wherein a multi-path USB charging mechanism is arranged in an inner cavity of the shell and comprises a PCB (printed circuit board), an air channel separation frame and a switching power supply, a plurality of USB interfaces are arranged on the PCB, an opening array matched with the plurality of USB interfaces is arranged on the surface of the shell, and the air channel separation frame is arranged between the PCB and the switching power supply and used for isolating a high-voltage area where the switching power supply is located and a low-voltage area where the PCB is located.

2. The integrated multi-channel USB charging device according to claim 1, wherein:

the shell comprises an upper cover and a bottom cover, the upper cover and the bottom cover are covered to form the inner cavity of the shell, and the opening array is arranged on the surface of the upper cover.

3. The integrated multi-channel USB charging device according to claim 2, wherein:

the PCB board includes PCB upper cover mount, main control panel, PCB wind channel separator mount, be equipped with a plurality ofly on the main control panel the USB interface, through PCB upper cover mount fixed connection in the upper cover, it is a plurality of the USB interface with the opening array one-to-one on upper cover surface, the main control panel passes through PCB wind channel separator mount fixed connection in the wind channel separator.

4. The integrated multi-channel USB charging device according to claim 3, wherein:

and heat radiation fans are arranged on two sides of the bottom cover and are embedded and installed on two sides of the bottom cover.

5. The integrated multi-channel USB charging device according to claim 3, wherein:

and a power switch socket is arranged on one side of the bottom cover, is embedded in one side of the bottom cover and is electrically connected with the switching power supply.

6. The integrated multi-channel USB charging device according to claim 3, wherein:

the PCB upper cover fixing frame comprises a first fixing frame main body and a plurality of first buckling parts arranged on the first fixing frame main body.

7. The integrated multi-channel USB charging device according to claim 3, wherein:

the PCB air duct separation frame fixing frame comprises a second fixing frame main body and a plurality of second buckling parts arranged on the second fixing frame main body.

8. The integrated multi-channel USB charging device according to any one of claims 3 to 7, wherein:

the main control panel comprises a switch power supply circuit, an output control circuit and a USB output interface, wherein the input end of the switch power supply circuit is connected with an alternating current power supply, the output end of the switch power supply circuit is connected with the output control circuit, and a quick charging circuit is connected between the output control circuit and the USB output interface.

9. The integrated multi-channel USB charging device according to claim 8, wherein:

the quick charging circuit comprises a quick charging voltage adaptation feedback circuit and a quick charging protocol communication circuit, the quick charging protocol communication circuit is communicated with the charging equipment through the USB output interface, the quick charging voltage adaptation feedback circuit detects a charging signal of the charging equipment at the USB output interface, and outputs a current and voltage feedback signal to the output control circuit.