CN211018303U - Charging device - Google Patents
Charging device Download PDFInfo
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- CN211018303U CN211018303U CN201921478001.1U CN201921478001U CN211018303U CN 211018303 U CN211018303 U CN 211018303U CN 201921478001 U CN201921478001 U CN 201921478001U CN 211018303 U CN211018303 U CN 211018303U
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Abstract
The utility model provides a charger, include: the shell is internally provided with a containing cavity; the first circuit board is provided with a first circuit, at least comprises an input rectifying circuit and is used for rectifying the input alternating voltage; the second circuit board is provided with a second circuit on the board and comprises a control circuit; a third circuit board on which a third circuit is provided, the third circuit including at least an output rectifying circuit; the first circuit board is electrically connected with the second circuit board, the second circuit board is electrically connected with the third circuit board, and the first circuit board is electrically connected with the third circuit board through a transformer; the transformer is electrically connected with the input rectification circuit and the output rectification circuit and used for converting the voltage output by the input rectification circuit and outputting the voltage to the output rectification circuit under the control of the control circuit. The charger greatly reduces the volume of the charger, increases the power density and improves the charging experience of users.
Description
Technical Field
The utility model relates to the field of electronic technology, particularly to charger.
Background
With the development of technology, electronic products and devices are widely used, and with the popularization of portable electronic products, small-sized power adapters and chargers are the trend in the future. To achieve a small volume, in addition to electronics, new layouts are required in the structure, for example to take advantage of the large number of patches to reduce the volume.
Conventional charger design, for the technology is convenient, adopts single PCB design mostly, plug-in components and its pin just occupy most area so, in order to compromise efficiency and heat dissipation simultaneously, space utilization is not high, makes the final product size very big. Some of the devices adopt two boards, one board is distributed with high voltage, and the other board is distributed with low voltage and is connected through a transformer, so that some space can be fully utilized, and some volume can be reduced. In order to further reduce the volume, the structure of the current charger needs to be improved, so as to further reduce the volume of the charger and improve the space utilization rate.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art, the utility model provides a charger, this charger volume reduces greatly, and power density increases, has improved user's the experience of charging greatly.
In order to overcome the problem that exists at present, the utility model provides a charger in one aspect, include:
the shell is internally provided with a containing cavity;
the first circuit board is provided with a first circuit, and the first circuit at least comprises an input rectifying circuit and is used for rectifying input alternating-current voltage;
the second circuit board is provided with a second circuit, and the second circuit comprises a control circuit;
the third circuit board is provided with a third circuit, and the third circuit at least comprises an output rectifying circuit;
the first circuit board is electrically connected with the second circuit board, the second circuit board is electrically connected with the third circuit board, and the first circuit board is electrically connected with the third circuit board through a transformer; the transformer is electrically connected with the input rectification circuit and the output rectification circuit and used for converting the voltage output by the input rectification circuit and outputting the voltage to the output rectification circuit under the control of the control circuit.
The utility model discloses an in the embodiment, the third circuit is still including setting up protocol identification circuit on the third circuit board, protocol identification circuit electricity is connected to control circuit for with connect in the load equipment of output communication of shaking hands, confirm the demand of charging of load, and will the demand of charging feeds back to control circuit.
In an embodiment of the present invention, the control circuit includes a controller and a switch circuit, the switch circuit is electrically connected to the primary side of the transformer, and the controller controls the switch circuit to generate the PWM signal based on the charging requirement.
In an embodiment of the present invention, the first circuit board and the third circuit board are disposed relatively and spaced apart by a certain distance, and the second circuit board is disposed between the first circuit board and the third circuit board.
In an embodiment of the present invention, the extension direction of the plane where the first circuit board is located and the extension direction of the plane where the third circuit board is located are different from the extension direction of the plane where the second circuit board is located, respectively.
In an embodiment of the present invention, the extending direction of the plane where the first circuit board is located and the extending direction of the plane where the third circuit board is located are perpendicular to the extending direction of the plane where the second circuit board is located, respectively; and
the first circuit board and the third circuit board are arranged in parallel relatively.
In an embodiment of the present invention, a surface of the third circuit board close to the first circuit board is configured as a plug-in surface; and/or the presence of a gas in the gas,
one surface of the first circuit board close to the third circuit board is set to be a plug-in surface.
In an embodiment of the present invention, the input rectification circuit includes an input patch rectifier bridge disposed on the first circuit board, and the patch rectifier bridge is disposed on the plug-in surface of the first circuit board.
In an embodiment of the present invention, the output rectifying circuit includes an output patch rectifying bridge disposed on the third circuit board, and the output patch rectifying bridge is disposed on the plug-in surface of the third circuit board.
In an embodiment of the present invention, the second circuit board is electrically connected to the first circuit board and the third circuit board through connectors, respectively.
According to the utility model discloses a charger divide into the three with charging circuit to set up respectively on three circuit board, connect through connector or transformer between the three circuit board, so not only make three return circuit independent mutually, electromagnetic interference between each other has greatly been reduced, but also can make full use of the advantage of paster, reduce the volume of power, can make the volume reduce more than 30% with inferior structure, flyback switching power supply than the tradition, and is small a lot of, make maximum power density possible 27.2W/inch3Is more than 2.5 times of the common switch power supply. Therefore, the charger with the size of the common mobile phone charger can charge mobile phones, panels and the like, is very convenient to carry, and improves the charging experience of users.
Drawings
The following drawings of the present invention are used herein as part of the present invention for understanding the present invention. There are shown in the drawings, embodiments and descriptions of the invention, which are used to explain the principles of the invention.
In the drawings:
fig. 1 is a schematic circuit block diagram of a charger according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a first circuit board of a charger according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a third circuit board of a charger according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a second circuit board of a charger according to an embodiment of the present invention;
fig. 5 is a schematic internal perspective view of a charger according to an embodiment of the present invention;
fig. 6 is a schematic view of another internal perspective structure of a charger according to an embodiment of the present invention;
fig. 7 is a schematic view of another internal three-dimensional structure of a charger according to an embodiment of the present invention.
1 first Circuit Board
2 second Circuit Board
3 third Circuit Board
11 input rectifying and energy storage circuit
12 transformer
13 output rectifying circuit
14 protocol identification circuit
15 controller
100 charger
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, exemplary embodiments according to the present invention will be described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the present invention and are not intended to limit the invention to the particular embodiments described herein. Based on the embodiments of the present invention described in the present application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.
It is to be understood that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term "and/or" includes any and all combinations of the associated listed items.
In order to provide a thorough understanding of the present invention, detailed steps and detailed structures will be provided in the following description in order to explain the technical solution provided by the present invention. The preferred embodiments of the present invention are described in detail below, however, other embodiments of the present invention are possible in addition to these detailed descriptions.
Before the introduction, the meaning of the terms in this text is explained.
Type-C USB interface
Type-A is a USB interface
Type-B USB interface
PD: USB IF-defined power transfer protocol
PDO: power output data
QC 3.0: high-traffic quick-charging protocol
PIQ: ANKER's fast charge protocol
Fig. 1 is a schematic circuit block diagram of a charger 100 according to an embodiment of the present invention.
As shown in fig. 1, the charger 100 of the present embodiment includes an input rectifying and tank circuit 11, a transformer 12, an output rectifying circuit 13, a protocol identifying circuit 14, and a control circuit 15.
The input rectifying and energy storing circuit 11 is used for rectifying the alternating-current voltage input at the input end to convert the input alternating-current voltage into direct-current voltage and storing energy. Illustratively, the input voltage is, for example, 90V-265V ac, such as 220V ac. Illustratively, the input alternating current is converted into pulse direct current after being processed by an input rectifying circuit. Illustratively, the input rectification circuit may include a patch rectifier bridge disposed on the circuit board.
The transformer 12 is used for voltage conversion of the direct current output by the input rectifying circuit to output a required voltage. Illustratively, the transformer 12 is a pulse transformer. The transformer 12 may include a primary coil and a secondary coil mounted on a circuit board.
The output rectifying circuit 13 is used to convert the voltage output by the transformer 12 into a voltage required by the load. For example, the output rectifying circuit 13 may include a power switch and a patch rectifying bridge disposed on a circuit board.
The protocol identification circuit 14 is configured to perform handshake communication with a load device connected to the output terminal, determine a charging requirement of the load, and feed the charging requirement back to the control circuit. Illustratively, the protocol identification circuit 14 may include a charging protocol chip disposed on a circuit board and its peripheral circuits. Illustratively, the protocol identification circuit 14 supports a PD charging protocol, a QC charging protocol, and a PIQ charging protocol.
The control circuit 15 controls the power signal flowing through the primary side of the transformer 12 according to the charging requirement of the load device determined by the protocol identification circuit 14 to control the transformer 12 to output the required power of the load device, and the output rectifying circuit 13 rectifies the signal output by the transformer 12 and outputs the rectified signal to the load device.
In this embodiment, the control circuit 15 includes a PWM main control chip disposed on the circuit board and a power switch electrically connected to the primary side of the transformer 12, wherein the PWM main control chip controls the power switch to generate a PWM signal based on the charging requirement of the load device. The output end of the further transformer 12 is electrically connected to the PWM control chip for feeding back the output signal to the PWM control chip.
In an exemplary manner, the first and second electrodes are,
in this embodiment, in order to reduce the volume of the charger, the circuit of the charger is divided into three parts, namely a first circuit, a second circuit and a third circuit, and the three circuits are respectively arranged on a first circuit board 1, a second circuit board 2 and a third circuit board 3, the first circuit board 1 is connected with the second circuit board 2 through a connector, the second circuit board 2 is connected with the third circuit board 3 through a connector, and the first circuit board 1 is connected with the third circuit board 3 through a transformer 12. The connector connection means that pins arranged on one circuit board are inserted into jacks arranged on the other circuit board to realize the electrical connection of the two boards.
In the embodiment of the present invention, the first Circuit Board 1, the second Circuit Board 2 and the third Circuit Board 3 can be selected from a PCB (Printed Circuit Board) substrate, a ceramic substrate, a Pre-injection (Pre-mold) substrate, etc.
In one embodiment, the first Circuit Board 1, the second Circuit Board 2, and the third Circuit Board 3 are PCB (Printed Circuit Board) substrates. The PCB is manufactured by processing different components and various complex process technologies, and the like, wherein the PCB circuit board has a single-layer structure, a double-layer structure and a multi-layer structure, and different hierarchical structures have different manufacturing modes.
Alternatively, the printed circuit board is primarily comprised of pads, vias, mounting holes, wires, components, connectors, fills, electrical boundaries, and the like.
Further, common board layer structures of printed circuit boards include three types, namely a Single layer board (Single L a PCB), a Double layer board (Double L a PCB) and a Multi L a PCB, and specific structures thereof are as follows:
(1) single-layer board: i.e. a circuit board with only one side copper-clad and the other side not copper-clad. Typically, the components are placed on the side that is not copper-clad, the copper-clad side being used primarily for wiring and soldering.
(2) Double-layer boards, i.e. circuit boards with both copper-clad surfaces, are usually called Top layer (Top L layer) on one surface and Bottom layer (Bottom L layer) on the other surface.
(3) Multilayer board: that is, a circuit board including a plurality of working layers includes a plurality of intermediate layers in addition to a top layer and a bottom layer, and the intermediate layers can be used as a conductive layer, a signal layer, a power layer, a ground layer, etc. The layers are insulated from each other and the connections between the layers are usually made by vias.
The printed circuit board includes many types of working layers, such as a signal layer, a protective layer, a silk-screen layer, an internal layer, and so on, which are not described herein again.
Further, the substrate may be a Pre-injection molded (Pre-mold) substrate, wherein the Pre-injection molded substrate has an injection molding wire and a pin, the injection molding wire is embedded in the main body structure of the substrate, and the pin is located on a surface of the main body structure of the substrate, such as an inner surface and/or an outer surface, so as to electrically connect the substrate with the laser diode chip, the driver chip, and the circuit board, respectively.
The preparation method of the Pre-injection molding (Pre-mold) substrate can be formed by a conventional injection molding process, a planer tool digging process and a mold stamping forming process in sequence, and details are not repeated here.
The injection molding material of the Pre-injection molding (Pre-mold) substrate may be a conventional material, such as a conductive thermoplastic material, and is not limited to one, wherein the shape of the Pre-injection molding (Pre-mold) substrate is defined by an injection molding frame, and is not limited to one.
In one embodiment, the substrate is a PCB substrate placed inside the injection molding frame, and then an annular groove structure is injection molded on the PCB substrate. Or arranging the injection molding lead and the pins in the injection molding frame, and then performing injection molding on the injection molding frame.
The first circuit, the second circuit and the third circuit comprise various functional devices for realizing charging of the charger.
Referring to fig. 1 to 4, the first circuit, which is a high-voltage power loop of the charger circuit, includes an input rectifying and tank circuit 11 and a transformer 12, and is disposed on the first circuit board 1. The first circuit can be arranged on two surfaces of the first circuit board 1 which are oppositely arranged, and the first circuit can be attached to and/or directly packaged on at least one surface of the first circuit board 1 which is oppositely arranged. As shown in fig. 2, the input rectification circuit comprises a rectification bridge arranged on the first circuit board 1, the utility model discloses in this rectification bridge be the paster rectification bridge, it encapsulates to the 1 plug-in components face of first circuit board through pasting the dress mode on to can make the electric current return circuit of setting up the first circuit on first circuit board optimize to minimum, output path reach the shortest, the loss is little, efficient.
Further, one side of the first circuit board 1, which is close to the second circuit board 2 and the third circuit board 3, is a plug-in surface, and the rectifier circuit is a patch rectifier bridge arranged on the plug-in surface, and the rectifier bridge shown in fig. 2 can be selected.
For example, the first circuit may be Mounted on the first circuit board 1 by Surface Mount Technology (SMT), and the specific mounting manner may be a manner commonly used in the art, for example, the first circuit may be Mounted on the substrate by using solder paste and the like by SMT, which is not described herein again. The direct-insert packaging means that pins are arranged on a functional device, the functional device is used as an insert and is directly inserted into the inserting holes of the first circuit board through the pins, and other conventional direct-insert packaging modes in the field can be selected for the direct-insert packaging.
The second circuit comprises a control circuit 15, which is a high voltage control loop of the charger circuit. The second circuit can be arranged on two surfaces of the second circuit board 2 which are oppositely arranged, and the second circuit can be attached to and/or directly packaged on at least one surface of the second circuit board 2 which is oppositely arranged. As shown in fig. 4, the second circuit includes a PWM control chip and a power switch provided on the second circuit board 2. The PWM control chip and the power switch may be attached to the second circuit board 2 by SMT, for example, using solder paste, and the like, which is not described herein again.
The third circuit includes an output rectifying circuit 13 and a protocol recognition circuit 14, which are low-voltage output portions of the charger circuit. The third circuit can be disposed on two surfaces of the third circuit board 3 opposite to each other, and the third circuit can be attached to and/or directly packaged on at least one surface of the third circuit board 3 opposite to each other. As shown in fig. 3, the third circuit includes an output rectifying circuit and a power switch provided on the third circuit board 3, and a charging protocol chip. The output rectifying circuit can be a chip rectifying bridge which is packaged on the plug-in surface of the first circuit board 1 in a mounting mode. The power switch and the charging protocol chip can also be mounted on the second circuit board 2 by SMT, for example, using solder paste, and the like, which will not be described herein again.
In this embodiment, the charger circuit is divided into a high-voltage power circuit, a high-voltage control circuit and a low-voltage output circuit which are respectively arranged on different circuit boards, and the three circuits are mutually connected and mutually independent in layout, so that mutual electromagnetic interference is greatly reduced. And because three loops are respectively arranged on three circuit boards (such as PCB boards) 3, 1 is a high-voltage power part, 2 is a high-voltage control part and feedback, and 3 is a low-voltage output part. 1 and 2, 2 and 3 are connected through connectors, and 1 and 3 are connected through a transformer. Therefore, the advantages of the patch are fully utilized, the size of the power supply is reduced, and the size can be reduced by more than 30% by using the secondary structure. In addition, the structure is particularly suitable for an optical coupling feedback circuit, an additional connecting seat is not needed, and in addition, because three circuit boards are connected with each other, the connecting distance of components is reduced, and the problem that a feedback loop is too long is solved.
As shown in fig. 5 to 7, in the present embodiment, in order to reduce the volume of the charger, the first circuit board 1, the second circuit board 2, and the third circuit board 3 are arranged in a three-dimensional manner. As an example, the first circuit board 1 and the third circuit board 3 are disposed opposite to each other with a certain distance therebetween, and the second circuit board 2 is disposed between the first circuit board 1 and the third circuit board 3 and electrically connected to the first circuit board 1 and the third circuit board 3, respectively. The internal space of the charger can be fully utilized through three-dimensional circuit board layout of three circuit boards, and each circuit board has two surfaces, so that the components are equivalent to 6-surface layout, the circuit can be more conveniently and efficiently laid out, the three-dimensional heat dissipation can be realized, and the heat dissipation efficiency is improved; because every two boards of the three circuit boards are mutually connected, the connection distance between the components can be reduced; the three components promote each other to solve two problems of EMI (electromagnetic interference) and heat generation.
It should be understood that the layout of the first circuit board 1, the second circuit board 2 and the third circuit board 3 is not limited to the layout shown in fig. 5 to 7, and may be in various other suitable forms, for example, other layouts that are different from each other in the extending direction of the plane of the first circuit board, the extending direction of the plane of the second circuit board and the extending direction of the plane of the second circuit board may be adopted.
Furthermore, the extension direction of the plane of the first circuit board is perpendicular to the extension direction of the plane of the second circuit board; and the first circuit board and the third circuit board are arranged in parallel relatively. One surface of the third circuit board close to the first circuit board is set as a plug-in surface; the plug-in surface is used for arranging components which need to be plugged in the circuit components. Furthermore, one surface of the first circuit board close to the third circuit board is provided as an insert surface. The patch rectifier bridge in the input-output rectifier circuit can be further arranged on the plug-in surface of the first circuit board or the third circuit board.
According to the utility model discloses a charger divide into the three with charging circuit to set up respectively on three circuit board, connect through connector or transformer between the three circuit board, so not only make three return circuit independent of each other, greatly reduced the electromagnetic interference between each other, but also can make full use of the advantage of paster, reduce the volume of power, can make the volume reduce more than 30% with inferior structure, flyback switching power supply than the tradition, small is very much, make the biggest volume reduce to turn on or off the formula switching power supplyThe power density can be 27.2W/inch3Is more than 2.5 times of the common switch power supply. Therefore, the charger with the size of the common mobile phone charger can charge mobile phones, panels and the like, is very convenient to carry, and improves the charging experience of users.
It should be appreciated that in the description of exemplary embodiments of the present invention, various features of the present invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the method of the present invention should not be interpreted as reflecting an intention that: rather, the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
It will be understood by those skilled in the art that all of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where such features are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.
The above description is only for the specific embodiments of the present invention or the description of the specific embodiments, the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. The protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A charger, characterized by further comprising:
the shell is internally provided with a containing cavity;
the first circuit board is provided with a first circuit, and the first circuit at least comprises an input rectifying circuit and is used for rectifying input alternating-current voltage;
the second circuit board is provided with a second circuit, and the second circuit comprises a control circuit;
the third circuit board is provided with a third circuit, and the third circuit at least comprises an output rectifying circuit;
the first circuit board is electrically connected with the second circuit board, the second circuit board is electrically connected with the third circuit board, and the first circuit board is electrically connected with the third circuit board through a transformer; the transformer is electrically connected with the input rectification circuit and the output rectification circuit and used for converting the voltage output by the input rectification circuit and outputting the voltage to the output rectification circuit under the control of the control circuit.
2. The charger of claim 1, wherein the third circuit further comprises a protocol identification circuit disposed on the third circuit board, the protocol identification circuit being electrically connected to the control circuit for handshaking communication with a load device connected to the output, determining a charging requirement of the load, and feeding the charging requirement back to the control circuit.
3. The charger of claim 2, wherein the control circuit comprises a controller and a switching circuit, the switching circuit being electrically connected to the primary side of the transformer, the controller controlling the switching circuit to generate the PWM signal based on the charging requirement.
4. The charger of claim 3, wherein the first circuit board and the third circuit board are disposed opposite and spaced apart a distance, the second circuit board being disposed between the first circuit board and the third circuit board.
5. The charger according to claim 1, wherein the extension direction of the plane on which the first circuit board is located and the extension direction of the plane on which the third circuit board is located are different from the extension direction of the plane on which the second circuit board is located, respectively.
6. The charger according to claim 5, wherein the extension direction of the plane of the first circuit board is perpendicular to the extension direction of the plane of the third circuit board; and
the first circuit board and the third circuit board are arranged in parallel relatively.
7. The charger according to claim 4 or 6, wherein a face of the third circuit board adjacent to the first circuit board is provided as a card face; and/or the presence of a gas in the gas,
one surface of the first circuit board close to the third circuit board is set to be a plug-in surface.
8. The charger of claim 7, wherein the input rectification circuit comprises an input patch rectifier bridge disposed on the first circuit board, the input patch rectifier bridge disposed on a card face of the first circuit board.
9. The charger according to claim 7, wherein the output rectifying circuit comprises an output patch rectifying bridge disposed on the third circuit board, the output patch rectifying bridge being disposed on a plug-in surface of the third circuit board.
10. The charger according to claim 1, wherein the second circuit board is electrically connected to the first circuit board and the third circuit board, respectively, by connectors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921478001.1U CN211018303U (en) | 2019-09-05 | 2019-09-05 | Charging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921478001.1U CN211018303U (en) | 2019-09-05 | 2019-09-05 | Charging device |
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| Publication Number | Publication Date |
|---|---|
| CN211018303U true CN211018303U (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921478001.1U Active CN211018303U (en) | 2019-09-05 | 2019-09-05 | Charging device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110391687A (en) * | 2019-09-05 | 2019-10-29 | 安克创新科技股份有限公司 | Charger |
| CN112072768A (en) * | 2020-09-09 | 2020-12-11 | 湖南炬神电子有限公司 | Small-size charger |
| CN114256921A (en) * | 2021-12-09 | 2022-03-29 | 湖南炬神电子有限公司 | Subminiature charger |
| CN114501903A (en) * | 2022-01-26 | 2022-05-13 | 湖南炬神电子有限公司 | Subminiature double-port output GaN quick charging device |
-
2019
- 2019-09-05 CN CN201921478001.1U patent/CN211018303U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110391687A (en) * | 2019-09-05 | 2019-10-29 | 安克创新科技股份有限公司 | Charger |
| CN110391687B (en) * | 2019-09-05 | 2024-09-24 | 安克创新科技股份有限公司 | Charger (charger) |
| CN112072768A (en) * | 2020-09-09 | 2020-12-11 | 湖南炬神电子有限公司 | Small-size charger |
| CN114256921A (en) * | 2021-12-09 | 2022-03-29 | 湖南炬神电子有限公司 | Subminiature charger |
| CN114501903A (en) * | 2022-01-26 | 2022-05-13 | 湖南炬神电子有限公司 | Subminiature double-port output GaN quick charging device |
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