CN210156965U

CN210156965U - Gallium nitride charger

Info

Publication number: CN210156965U
Application number: CN201921453295.2U
Authority: CN
Inventors: 罗宜成; 陈龙扣; 桂登宇
Original assignee: Shenzhen Shishang Creative Development Technology Co Ltd
Current assignee: Shenzhen Baseus Technology Co Ltd
Priority date: 2019-09-03
Filing date: 2019-09-03
Publication date: 2020-03-17
Anticipated expiration: 2029-09-03

Abstract

The utility model provides a gallium nitride charger includes that shell subassembly, AC input participate in subassembly, charging circuit subassembly and output assembly, and the charging circuit subassembly includes electric connection's AC input circuit, input rectifier circuit, input filter circuit, transformer and output rectifier circuit in order. Can charge for electronic equipment such as cell-phone steadily, moreover, main PCB board and a plurality of vice PCB boards have in the shell subassembly, a plurality of vice PCB boards are connected perpendicularly respectively and are being same one side surface at main PCB board, output assembly sets up on the vice PCB board of first group, a partial structure of charging circuit subassembly sets up on main PCB board, another partial structure sets up on the vice PCB board of second group, use gallium nitride MOS pipe to constitute flyback converter as switch tube and transformer, can show the volume that reduces the charger. Further, the insulation and heat dissipation properties are stronger.

Description

Gallium nitride charger

Technical Field

The utility model relates to a charger field particularly, relates to gallium nitride charger.

Background

With the development of the technology, the intellectualization of the consumer electronics products such as the mobile phone and the PAD is higher and higher, the functions are more and more abundant, and accordingly, more and more people use the consumer electronics products such as the mobile phone and the PAD. In the prior art, consumer electronic products use rechargeable batteries as power supplies and need to be charged in time to supplement electric energy.

The charger in the prior art is large in size, difficult to miniaturize, large in occupied space and inconvenient to carry. Although some products in the market try to miniaturize the charger, the charger has the defects of easy heating, easy short circuit and the like.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a gallium nitride charger, the concrete technical scheme is as follows:

a gallium nitride charger comprises a shell component, an alternating current input pin component, a charging circuit component and an output component, wherein the charging circuit component comprises an alternating current input circuit, an input rectifying circuit, an input filtering circuit, a transformer and an output rectifying circuit which are electrically connected in sequence;

the shell subassembly has main PCB board and a plurality of vice PCB board in, it is a plurality of vice PCB board is connected perpendicularly respectively with one side surface of main PCB board, output assembly sets up first group on the vice PCB board, charging circuit subassembly's partly structure sets up on the main PCB board, another partly structure sets up on the second group on the vice PCB board.

In a specific embodiment, the output assembly includes a plurality of output interfaces, and each output interface is respectively disposed on different sub PCB boards.

In a specific embodiment, the sub PCB for mounting each output interface is located at a first end of the main PCB, and the sub PCB for mounting another part of the charging circuit assembly is located at a second end of the main PCB;

the transformer comprises a planar transformer.

In a specific embodiment, the output interface comprises a USB-A interface and a Type-C interface.

In a specific embodiment, at least one of the auxiliary PCB boards provided with the Type-C interface is provided with a quick-charging output circuit, and the quick-charging output circuit is electrically connected with the Type-C interface.

In a specific embodiment, the housing assembly further comprises an insulating cover and a metal heat dissipation cover, the insulating cover is connected with the main PCB and covers part of components of the main PCB, the metal heat dissipation cover is sleeved outside the insulating cover, and at least one of the first set of the auxiliary PCB is connected with the metal heat dissipation cover in a welding manner.

In a specific embodiment, the area of the main PCB where the first set of the sub-PCBs are disposed is not covered by the insulating cover.

In a specific embodiment, the middle part of the metal heat dissipation cover is provided with an elastic sheet and a through hole arranged on the periphery of the elastic sheet, and the elastic sheet is configured to be deformed inwards and inserted into the inner surface of the edge area of the insulation cover.

In a specific embodiment, one or more of the first set of the secondary PCB boards contact the metal heat dissipation cover through heat dissipation silicone.

In a specific embodiment, one or more of the second set of secondary PCB boards are back-provided with an insulating sheet.

The utility model discloses following beneficial effect has at least:

the utility model discloses a gallium nitride charger includes that shell subassembly, alternating current input participate in subassembly, charging circuit subassembly and output assembly, and the charging circuit subassembly includes electric connection's alternating current input circuit, input rectifier circuit, input filter circuit, transformer and output rectifier circuit in order, and alternating current input circuit electric connection exchanges the input and participates in the subassembly, rectification output module electric connection output assembly. According to the gallium nitride charger, electronic equipment such as a mobile phone can be stably charged.

And, main PCB board and a plurality of vice PCB board have in the shell subassembly, and a plurality of vice PCB boards are connected perpendicularly respectively in the same one side surface of main PCB board, and output assembly sets up on the vice PCB board of first group, and charging circuit subassembly's partly structure sets up on main PCB board, another part structure sets up on the vice PCB board of second group. Therefore, the circuit board stacking structure of the smart charger is provided, and the plurality of auxiliary PCB boards are respectively and vertically connected to the surface of the same side of the main PCB board to arrange part of the structures of the output assembly and the charging circuit assembly on the auxiliary PCB boards.

Furthermore, the utility model discloses in use gallium nitride MOS pipe to constitute flyback converter as switch tube and transformer, when realizing the alternating current direct current (AC/DC) and the direct current alternating current (DC/DC) conversion of this gallium nitride charger of master control circuit control and provide insulating isolation between input stage and output stage, gallium nitride MOS pipe is long-pending very little, can show the volume that reduces the charger. Furthermore, the charger can be matched with a planar transformer, so that the size of the charger is further reduced.

Furthermore, a smart insulating cover and a heat dissipation cover are designed, so that the size of the charger can be fully reduced, short circuit and electric leakage can be effectively prevented in an insulating mode, and efficient heat dissipation can be achieved.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a perspective view of a gallium nitride charger according to an embodiment;

FIG. 2 is an exploded view of an exemplary embodiment of a gallium nitride charger with hidden pin assemblies;

FIG. 3 is a perspective view of the gallium nitride charger of the embodiment after hiding the pin assembly and the housing assembly;

FIG. 4 is an exploded view of the embodiment of the gallium nitride charger with the hidden pin assembly and the hidden housing assembly;

FIG. 5 is a schematic diagram of the circuit of the GaN charger in one embodiment.

Description of the main element symbols:

1-a housing assembly; 2-a pin body; 3. 4-Type-C interface; 5-USB-A interface; 6-a first secondary PCB board; 7-a second set of PCB boards; 8-a third pair of PCB boards; 9-main PCB board; 10-an insulating cover; 11-a metal heat sink; 12-a through hole; 13-an elastic sheet; 14-a fourth secondary PCB board; s1-ac input pin assembly; S2-AC input circuit; s3-input rectification circuit; s4 — an input filter circuit; s5-a transformer; s6-gallium nitride MOS tube; s7-a master control circuit; s8-output rectification circuit.

Detailed Description

It should be noted that, the electrical connection in the present invention includes the electrical conduction achieved by the direct connection of the two conductors, and also includes the electrical conduction achieved by the indirect connection of the two conductors through one or more intermediate conductors.

Examples

As shown in fig. 1 to 5, the present embodiment provides a gallium nitride charger, which includes a housing assembly 1, an ac input pin assembly S1, a charging circuit assembly, and an output assembly, wherein the ac input pin assembly S1 includes a pin body 2 and a seat body for receiving the pin body 2. The charging circuit assembly comprises an alternating current input circuit S2, an input rectifying circuit S3, an input filtering circuit S4, a transformer S5 and an output rectifying circuit S8 which are electrically connected in sequence, wherein the alternating current input circuit S2 is electrically connected with an alternating current input pin assembly S1, a rectifying output module is electrically connected with an output assembly, the charging circuit assembly further comprises a main control circuit S7, the main control circuit S7 is provided with a gallium nitride MOS tube S6, and the gallium nitride MOS tube S6 is electrically connected with a primary coil of the transformer S5 and forms a flyback converter with the transformer S5.

For the specific structures of the ac input circuit S2, the input rectifying circuit S3, the input filter circuit S4, the transformer S5, and the output rectifying circuit S8, and the connection modes therebetween, reference may be made to the prior art, and details are not repeated in this embodiment. Preferably, the charging circuit assembly further comprises a voltage stabilizing circuit, a current stabilizing circuit, a protection circuit and the like, and an optical coupling feedback circuit and the like, so that the charger has good stability. Since the gallium nitride charger of the present embodiment includes the housing assembly 1, the ac input pin assembly S1, the charging circuit assembly and the output assembly, the charging circuit assembly includes the ac input circuit S2, the input rectifying circuit S3, the input filter circuit S4, the transformer S5 and the output rectifying circuit S8 which are electrically connected in sequence, the ac input circuit S2 is electrically connected to the ac input pin assembly S1, and the rectifying output module is electrically connected to the output assembly. Therefore, the gallium nitride charger can stably charge electronic devices such as mobile phones.

The flyback converter comprises a transformer S5, a gallium nitride MOS tube S6 and a capacitor, wherein the gallium nitride MOS tube S6 is used as a switching tube. The main control circuit S7 includes a control chip and a corresponding power control circuit, the specific structure and connection method refer to the prior art, which is not described in detail in this embodiment, and the control chip can generate a control square wave to control the switching of the gallium nitride MOS transistor S6. The switch of the gallium nitride MOS tube S6 is controlled by Pulse Width Modulation (PWM) generated by a main control circuit S7, and high-frequency square wave signals are generated at two ends of the transformer S5 through closing and conducting. The transformer S5 transfers the generated square wave signal to the secondary coil in a magnetic field induction manner. Through the filtering and rectifying effects of the gallium nitride MOS tube S6 and the capacitor, stable direct current output is obtained at the output end. Regarding the specific connection manner of the transformer S5, the gallium nitride MOS transistor S6 and the capacitor, reference may be made to the connection manner of the transformer S5, the diode and the capacitor in the prior art, which is not described in detail in this embodiment.

In this embodiment, the main PCB 9 and the plurality of sub-PCBs are provided in the housing assembly 1, the plurality of sub-PCBs are respectively vertically connected to the same side surface of the main PCB 9, the output assembly is disposed on the first set of sub-PCBs, one part of the structure of the charging circuit assembly is disposed on the main PCB 9, and the other part of the structure of the charging circuit assembly is disposed on the second set of sub-PCBs. Preferably, the vertical connection between the main PCB board 9 and the plurality of sub PCB boards is achieved by soldering of contacts.

Therefore, the circuit board stacking structure of the smart charger is provided, and the plurality of auxiliary PCB boards are respectively and vertically connected to the surface of the same side of the main PCB board 9 to arrange part of the structures of the output assembly and the charging circuit assembly on the auxiliary PCB boards.

Furthermore, the utility model discloses in use gallium nitride MOS pipe S6 to constitute flyback converter as switch tube and transformer S5, when realizing that main control circuit S7 controls the alternating current direct current (AC/DC) and the direct current alternating current (DC/DC) conversion of this gallium nitride charger, and provide insulating isolation between input stage and output stage, gallium nitride MOS pipe S6 is small, can show the volume that reduces the charger. Furthermore, the charger can be matched with a planar transformer S5 to further reduce the volume of the charger.

Preferably, the output assembly comprises a plurality of output interfaces, and each output interface is respectively arranged on different secondary PCB boards.

Preferably, the sub PCB for mounting each output interface is located at a first end of the main PCB 9, and the sub PCB for mounting another part of the structure of the charging circuit assembly is located at a second end of the main PCB 9;

preferably, the transformer S5 includes a planar transformer S5.

Preferably, the output interface includes a USB-a interface 5 and a Type-C interface.

Preferably, at least one of the auxiliary PCB boards provided with the Type-C interface is provided with a quick-charging output circuit, and the quick-charging output circuit is electrically connected with the Type-C interface. Exemplarily, the number of the auxiliary PCB boards is four, and the first auxiliary PCB board 6, the second auxiliary PCB board 7, the third auxiliary PCB board 8 and the fourth auxiliary PCB board 14 are respectively, the quick-charging output circuit and the corresponding Type-C interface 3 supporting quick charging are arranged on the first auxiliary PCB board 6, the second Type-C interface 4 is arranged on the second auxiliary PCB board 7, the USB-a interface 5 is arranged on the third auxiliary PCB board 8, the first auxiliary PCB board 6, the second auxiliary PCB board 7 and the third auxiliary PCB board 8 are arranged side by side at the first end of the main PCB board 9, and the fourth auxiliary PCB board 14 is arranged at the second end of the main PCB board 9.

In this embodiment, the housing assembly 1 further includes an insulating cover 10 and a metal heat dissipation cover 11, the insulating cover 10 is connected to the main PCB 9 and covers a part of components of the main PCB 9, and the metal heat dissipation cover 11 is disposed outside the insulating cover 10. At least one of the first set of secondary PCB boards is soldered to the metal heat sink 11, thereby achieving grounding of the PCB boards.

The cross section of the main structure of the insulating cover 10 is preferably a U-shaped structure, and the insulating cover and the PCB board can surround three surfaces of components on the main PCB board 9 in combination. The cross section of the metal heat dissipation cover 11 is preferably in a U-shaped structure, and the metal heat dissipation cover and the PCB board can surround three surfaces of components on the main PCB board 9 in combination.

Preferably, the area of the main PCB 9 where the first set of sub-PCBs are located is not covered by the insulating cover 10.

Preferably, the metal heat dissipation cover 11 has an elastic piece 13 and a through hole 12 opened at the outer circumference of the elastic piece 13 at the middle portion thereof, and the elastic piece 13 is configured to be deformed inward and inserted into the inner surface of the edge region of the insulation cover 10.

Preferably, one or more of the first set of secondary PCB boards contact the metal heat sink cover 11 through heat-dissipating silicone. Therefore, the heat of the auxiliary PCB can be quickly conducted to the metal heat dissipation cover 11, and the back of the first auxiliary PCB 6 at least provided with the quick-charging output circuit is in contact with the metal heat dissipation cover 11 through heat dissipation silica gel.

Therefore, the smart insulating cover 10 and the heat dissipation cover are designed, so that the size of the charger can be fully reduced, short circuit and electric leakage can be effectively prevented in an insulating mode, and efficient heat dissipation can be achieved.

Preferably, one or more of the second set of sub PCB boards is provided with an insulation sheet (not shown in the drawings) on the back side. Therefore, the size of the charger can be reduced, and meanwhile, the insulativity between the second group of auxiliary PCB boards and other components on the main PCB board can be guaranteed.

Those skilled in the art will appreciate that the drawings are merely schematic representations of one preferred implementation scenario and that the blocks or flow diagrams in the drawings are not necessarily required to practice the present invention.

Those skilled in the art will appreciate that the modules in the devices in the implementation scenario may be distributed in the devices in the implementation scenario according to the description of the implementation scenario, or may be located in one or more devices different from the present implementation scenario with corresponding changes. The modules of the implementation scenario may be combined into one module, or may be further split into a plurality of sub-modules.

The sequence numbers of the present invention are only for description, and do not represent the advantages and disadvantages of the implementation scenario.

The above disclosure is only a few specific implementation scenarios of the present invention, however, the present invention is not limited thereto, and any changes that can be considered by those skilled in the art shall fall within the protection scope of the present invention.

Claims

1. A gallium nitride charger is characterized by comprising a shell component, an alternating current input pin component, a charging circuit component and an output component, wherein the charging circuit component comprises an alternating current input circuit, an input rectifying circuit, an input filtering circuit, a transformer and an output rectifying circuit which are electrically connected in sequence;

2. The gallium nitride charger according to claim 1, wherein the output assembly comprises a plurality of output ports, each output port being disposed on a different one of the sub-PCB boards.

3. The gan charger of claim 2, wherein the sub PCB board for mounting each of the output ports is located at a first end of the main PCB board, and the sub PCB board for mounting another part of the structure of the charging circuit assembly is located at a second end of the main PCB board;

the transformer comprises a planar transformer.

4. The gallium nitride charger of claim 2, wherein the output interface comprises a USB-a interface and a Type-C interface.

5. The gallium nitride charger according to claim 4, wherein at least one of the sub-PCBs having the Type-C interface has a fast charging output circuit thereon, and the fast charging output circuit is electrically connected to the Type-C interface.

6. The gallium nitride charger according to claim 1, wherein the housing assembly further comprises an insulating cover and a metal heat sink, the insulating cover is connected to the main PCB and covers part of the components of the main PCB, the metal heat sink is sleeved outside the insulating cover, and at least one of the first set of sub-PCBs is welded to the metal heat sink.

7. The gallium nitride charger according to claim 6, wherein an area of the main PCB on which the first set of sub-PCBs are disposed is not covered by the insulating cover.

8. The gallium nitride charger according to claim 6, wherein the metal heat dissipation cover has a spring piece at a central portion thereof and a through hole formed at an outer periphery of the spring piece, the spring piece being configured to be deformed inward and inserted into an inner surface of an edge region of the insulating cover.

9. The gallium nitride charger according to claim 6, wherein one or more of the first set of secondary PCB boards contact the metal heat sink cover through a heat-dissipating silicone gel.

10. The gallium nitride charger according to claim 1, wherein one or more of the second set of secondary PCB boards are backed with an insulating sheet.