CN213846302U - Electronic terminal charger - Google Patents
Electronic terminal charger Download PDFInfo
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- CN213846302U CN213846302U CN202121449097.6U CN202121449097U CN213846302U CN 213846302 U CN213846302 U CN 213846302U CN 202121449097 U CN202121449097 U CN 202121449097U CN 213846302 U CN213846302 U CN 213846302U
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Abstract
The utility model provides a can improve the electronic terminal charger of radiating rate, increase power density and reduce volume, it includes: the shell is provided with a top cover and a bottom shell, an accommodating cavity is formed by the top cover and the bottom shell, and a plurality of jacks are arranged on the end face of the bottom shell; the circuit board is accommodated in the accommodating cavity and used for setting a charger circuit, and comprises a main circuit board and a plurality of auxiliary circuit boards inserted on the main circuit board, wherein a plurality of power devices in the charger circuit are installed on the main surface of the main circuit board, and a plurality of output interfaces exposed from a plurality of jacks are arranged on a first auxiliary circuit board positioned at the output end of the main circuit board; the electronic terminal charger further comprises U-shaped first radiating fins which are arranged in a mode of surrounding the main surface of the main circuit board and are respectively contacted with the radiating surfaces on two sides and the plurality of power devices.
Description
Technical Field
The application relates to the technical field of charging, in particular to an electronic terminal charger.
Background
With the rise of charging in mobile devices such as mobile phones and notebook computers, various electronic terminal chargers have come into play, and electronic terminal chargers with small volume are a future trend. To achieve a small volume, in addition to the improvement of the circuit structure itself, a new layout is required in the structure, for example, the advantage of using more patches to reduce the volume.
In the overall arrangement of conventional electronic terminal charger, for the technology convenience, adopt single circuit board design mostly, however plug-in components and its pin just occupy most area, in order to compromise efficiency and heat dissipation simultaneously, space utilization is not high, makes the final product size very big. Thus, the electronic terminal charger has a low power density and is limited in size. 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.
In addition, because the circuit module in the charger generates heat easily in operation, therefore, the charger must possess good ventilation structure for the radiating rate is fast, and current charger itself is bulky, and components and parts easily generate heat, and the radiating rate is slow, has the hidden danger that causes the components and parts to burn out easily, reduces the life of charger.
SUMMERY OF THE UTILITY MODEL
As described above, the conventional electronic terminal charger has problems of large volume, low power density, low heat dissipation speed, and the like.
In view of this, the present invention provides an electronic terminal charger capable of increasing heat dissipation speed, increasing power density and reducing volume.
A first aspect of the present invention provides an electronic terminal charger, which includes:
the shell is provided with a top cover and a bottom shell, an accommodating cavity is formed by the top cover and the bottom shell, and a plurality of insertion holes are formed in the end face of the bottom shell;
the circuit board is accommodated in the accommodating cavity and used for arranging a charger circuit, and comprises a main circuit board and a plurality of auxiliary circuit boards inserted on the main circuit board, a plurality of power devices in the charger circuit are installed on the main surface of the main circuit board, and a plurality of output interfaces exposed from the plurality of jacks are arranged on a first auxiliary circuit board positioned at the output end of the main circuit board; and
the plug is arranged on the end surface of the top cover and is electrically connected with the main circuit board,
the plurality of power devices are mounted with one of the faces thereof being close to the edge side of the main face of the main circuit board,
the electronic terminal charger further includes a U-shaped first heat sink disposed so as to surround the main surface of the main circuit board, and heat dissipation surfaces on both sides of the first heat sink are in contact with the plurality of power devices, respectively.
A second aspect of the present invention is the electronic terminal charger described above, wherein a second heat radiation fin is provided in a manner to contact with the back surface of the main circuit board.
A third aspect of the present invention is directed to the electronic terminal charger described above, wherein the top cover and the end surface of the bottom case are respectively provided with a plurality of heat dissipation holes.
The fourth aspect of the present invention is that, in the above-mentioned electronic terminal charger, a plurality of louvers of the top cover are two parallel straight lines disposed on both sides of the plug, and a plurality of louvers of the bottom cover are a plurality of concentric circles disposed in the middle of the plurality of output interfaces.
A fifth aspect of the present invention is that, in the above-described electronic terminal charger, the first heat radiating fin is provided to have a plurality of grooves formed along the extending direction of the housing.
A sixth aspect of the present invention resides in that, in the above-mentioned electronic terminal charger, the second heat radiating fin is provided to have a plurality of grooves formed along the extending direction of the housing.
A seventh aspect of the present invention resides in that, in the above-mentioned electronic terminal charger, a fan is provided in the accommodation cavity.
An eighth aspect of the present invention resides in that, in the above-mentioned electronic terminal charger, the filter in the charger circuit is provided on the second auxiliary circuit board.
A ninth aspect of the present invention resides in that, in the above-mentioned electronic terminal charger, the energy storage capacitor in the charger circuit is set up the principal plane of the main circuit board, the switching element in the charger circuit is set up the back of the main circuit board, the energy storage capacitor with the switching element is close to the setting.
The tenth aspect of the present invention resides in that, in the above-mentioned electronic terminal charger, the main circuit board is a plurality of the auxiliary circuit board is a PCB board.
An eleventh aspect of the present invention is that, in the above electronic terminal charger, the main circuit board is provided in an L shape.
A twelfth aspect of the present invention is that, in the above-described electronic terminal charger, two of the plurality of sub circuit boards are provided in parallel.
A thirteenth aspect of the present invention is that, in the above-described electronic terminal charger, two of the plurality of sub circuit boards are set to be orthogonal.
A fourteenth aspect of the present invention is that, in the above-described electronic terminal charger, the plurality of power devices include a rectifier and a transformer.
According to the utility model discloses an electronic terminal charger, will generate heat on the device distributes to main circuit board dispersedly and inserts the polylith auxiliary circuit board on main circuit board, set up a plurality of output interface on same auxiliary circuit board, and will generate heat great device setting at the edge side of the main face of main circuit board and utilize U type fin rather than the contact to dispel the heat, therefore, when make full use of space realizes whole compact components and parts overall arrangement, leave the heat dissipation of large tracts of land copper foil confession heating device on main circuit board, and compromise the effective heat dissipation of side, reach better radiating effect, realize improving the radiating rate from this, increase power density and reduce the electronic terminal charger of volume.
In addition, a plurality of heat dissipation holes are respectively formed in the end faces of the top cover and the bottom shell of the electronic terminal charger, so that a plurality of heat dissipation air channels can be formed in the shell, the heat dissipation speed of an internal heating device is increased, and a better heat dissipation effect is obtained.
Furthermore, the radiating fins are provided with a plurality of grooves formed along the extending direction of the shell, so that a plurality of radiating air channels can be formed inside the shell, the radiating speed of an internal heating device is improved, and a better radiating effect is obtained.
Drawings
Fig. 1 is a block diagram showing a circuit configuration of a general electronic terminal charger.
Fig. 2 is a block diagram showing a circuit configuration of another electronic terminal charger.
Fig. 3 is a perspective view showing a circuit board layout in the electronic terminal charger according to embodiment 1 of the present invention, as viewed from above.
Fig. 4 is a perspective view showing a circuit board layout in the electronic terminal charger according to embodiment 1 of the present invention, as viewed from below.
Fig. 5 is a perspective view showing an internal configuration of an electronic terminal charger according to embodiment 1 of the present invention.
Fig. 6 is a perspective view showing a bottom case of an electronic terminal charger according to embodiment 1 of the present invention.
Fig. 7 is a perspective view showing a circuit board layout in the electronic terminal charger according to modification 1 of embodiment 1 of the present invention, as viewed from above.
Fig. 8 is a perspective view showing a circuit board layout in the electronic terminal charger according to modification 1 of embodiment 1 of the present invention, as viewed from below.
Fig. 9 is a perspective view showing a circuit board layout in the electronic terminal charger according to modification 2 of embodiment 1 of the present invention, as viewed from above.
Fig. 10 is a perspective view showing a circuit board layout in the electronic terminal charger according to modification 2 of embodiment 1 of the present invention, as viewed from below.
Fig. 11 is a perspective view showing the electronic terminal charger according to embodiment 2 of the present invention, viewed from the top cover side.
Fig. 12 is a perspective view showing the electronic terminal charger according to embodiment 2 of the present invention, viewed from the bottom case side.
Fig. 13 is an installation diagram showing an electronic terminal charger according to embodiment 3 of the present invention.
Fig. 14 is a view showing a multi-groove structure formed in a heat sink of the electronic terminal charger shown in fig. 13.
Detailed Description
In order to explain the present invention in more detail, the following describes a mode for carrying out the present invention with reference to the accompanying drawings.
It should be noted that in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in other specific forms than those herein described and it will be understood by those skilled in the art that various changes in form and details may be made without departing from the spirit and scope of the invention.
Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense. That is, what is meant is "including, but not limited to".
In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Fig. 1 is a block diagram showing a circuit configuration of a general electronic terminal charger. As shown in fig. 1, the electronic terminal charger includes a filter, a rectifier, an isolated DC/DC converter, a DC/DC converter, and a USB output interface, which are connected in sequence.
The filter filters the input ac voltage. The rectifier converts the alternating voltage obtained after filtering by the filter into direct voltage.
The isolation DC/DC converter is used for isolating the direct-current voltage output by the rectifier and outputting the isolated direct-current voltage. The isolated DC/DC converter may be a different type of DC/DC transformer, such as a flyback isolated DC/DC converter having a transformer, a primary switching element, a secondary switching element, a primary energy storage capacitor, and a secondary output capacitor.
The plurality of DC/DC converters convert the isolated DC voltage output from the isolated DC/DC converter into a plurality of target charging voltages, respectively. The plurality of output interfaces (USB output interfaces are illustrated in the figure) output the plurality of target charging voltages converted by the plurality of DC/DC converters, respectively.
The electronic terminal charger also comprises a primary side controller (controller DC/DC), a secondary side synchronous rectification controller (controller synchronous rectification) and a protocol controller (controller protocol and DC/DC). The primary side controller controls a primary side switching element of the isolation DC/DC converter. The secondary side synchronous rectification controller controls a secondary side switching element of the isolation DC/DC converter. The protocol controller is in communication connection with the DC/DC converter and the USB output interface. After being connected to the USB output interface, equipment such as an electronic terminal and the like needing to be charged externally carries out protocol communication with the protocol controller, and sends required voltage, namely request voltage to the protocol controller. After receiving the request voltage, the protocol controller controls the DC/DC converter to make the output voltage equal to the value of the request voltage.
Fig. 2 is a block diagram showing a circuit configuration of another electronic terminal charger. In fig. 2, the flyback controller as the primary side controller and the synchronous rectification controller on the secondary side output control signals PWM1 and PWM2, respectively, to control the primary side switching element Q1 and the secondary side switching element Q2. The USB output interfaces are 2 output interfaces, namely a USB output interface J1 and a USB output interface J2. The USB output interface J1 outputs the direct-current voltage output from the isolated DC/DC converter directly as the first target charging voltage. The USB output interface J2 outputs, as a second target charging voltage, a voltage obtained by boosting or stepping down the DC voltage output from the isolated DC/DC converter by a DC/DC converter (in the figure, a Buck-Boost Buck converter, in which boosting and stepping down are realized by four switching elements Q3-Q6, an inductor L3, and a capacitor C7).
< embodiment 1>
Hereinafter, a configuration of an electronic terminal charger according to embodiment 1 of the present invention will be described with reference to fig. 3 to 6, taking as an example a circuit configuration of the electronic terminal charger shown in fig. 2.
As shown in fig. 5 and 6, the electronic terminal charger includes a housing having a top cover 11 and a bottom cover 12, a circuit board, and a plug. An accommodation cavity is formed by the top cover 11 and the bottom case 12, and a circuit board for setting a charger circuit is accommodated in the accommodation cavity. The plug is arranged on the end face of the top cover 11 and is electrically connected with the input end of the charger circuit. The plug is typically made of metal and protrudes through a slot at the end face of the cap 11. The plug may be of a foldable type as shown in fig. 11 described later, and the metal plug blades may be hidden in the slits at the end face of the top cover after being rotated 90 degrees in the recesses.
A plurality of sockets through which a plurality of output ports of the charger circuit are exposed are provided on an end surface of the bottom case 12. Fig. 6 shows an example in which 2 output ports and sockets are provided, but the number of output ports and sockets is not limited to 2 and may be any integer value.
Fig. 3 and 4 show perspective views of the circuit board layout in the electronic terminal charger, viewed from above and below, respectively. The circuit configuration of the electronic terminal charger corresponds to the circuit configuration shown in fig. 2.
The circuit boards may include a main circuit board PCB1 and secondary circuit boards PCB2 and PCB3 inserted over the main circuit board PCB 1. The secondary circuit board PCB2 and PCB3 are solder-secured to the primary circuit board PCB 1. Wherein the secondary circuit board PCB2 and PCB3 are arranged orthogonally. Fig. 3 shows an example in which 2 sub circuit boards are provided, but the number of sub circuit boards is not limited to 2, and may be 2 or more.
In the embodiment of the present invention, the main Circuit Board and the auxiliary Circuit Board are both Printed Circuit Board (PCB) boards. The PCB is manufactured by processing various complex process technologies and the like and mainly comprises a bonding pad, a through hole, a mounting hole, a lead, a component, a connector, filling, an electrical boundary and the like.
A filter (filter inductors L1 and L2 and a filter capacitor CX) is mounted on the sub circuit board PCB2 located at the input end of the main circuit board PCB 1. A USB output interface J1 and a USB output interface J2, an inductor L3 as a device in the DC/DC converter, and a capacitor C7 are provided on the sub circuit board PCB3 located at the output terminal of the main circuit board PCB 1. A plurality of output interfaces are arranged on the same auxiliary circuit board PCB3, so that the layout is more compact and the productivity is higher.
The devices fixed on the auxiliary circuit board PCB2 and the PCB3 are both suspended above the main circuit board PCB1, the layout of the devices on the surface of the main circuit board PCB1 is not affected, the main circuit board PCB1 has sufficient area to place the devices and large-area copper foil to dissipate heat of the devices, and meanwhile, the effect of compactly placing the devices is also realized, so that the size can be reduced, and the power density can be increased.
A plurality of power devices in the charger circuit are mounted on the main face of the main circuit board PCB 1. The power device may comprise a rectifier and a transformer. In some examples, the transformer may be omitted. In the present embodiment, the power devices are a rectifier D1 and a transformer T1. The rectifier D1 and the transformer T1 are mounted with one face thereof close to the edge side of the main face of the main circuit board PCB1, respectively. In the circuit layout shown in fig. 3, the primary storage capacitors C1, C2, C3, and C4, the secondary output capacitor C5, and the safety capacitor C6 are mounted on the main surface of the main circuit board PCB 1. The energy storage capacitors C1, C2, C3, C4 are arranged in an L-shape, and the capacitors C5, C6 are disposed on the edge side of the main surface of the main circuit board PCB 1.
On the back surface of the main circuit board PCB1, switching elements Q1, Q2, and the like in the charger circuit are mounted. The switching elements are uniformly placed at a certain distance from each other to uniformly dissipate heat. And flowing out copper foil with enough area around the bonding pad of the switching element for heat dissipation of the switching element. The storage capacitors C1, C2, C3, and C4 on the main surface of the main circuit board PCB1 are disposed close to the switching elements on the rear surface, so that the current loss is reduced and the parasitic inductance and the like are also reduced.
Further, as shown in fig. 5, the electronic terminal charger further includes a first heat sink 1 of a U-shape. The first heat sink 1 is provided so as to surround the main surface of the main circuit board PCB1, and heat dissipation surfaces on both sides thereof are in contact with the rectifier D1 and the transformer T1 located on the edge side of the main surface of the main circuit board PCB1, respectively. The first heat sink 1 is fixed to the main circuit board PCB1 with fixing pins 3.
The rectifier D1 and the transformer T1 are devices having a large heat generation amount, and the devices having a large heat generation amount are disposed on the edge side of the main surface of the main circuit board and are in contact with the main surface of the main circuit board to dissipate heat, so that effective heat dissipation from the side surface can be achieved, and a better heat dissipation effect can be achieved.
Further, the electronic terminal charger further includes a second heat sink 2. The second heat sink 2 is in contact with the back surface of the main circuit board PCB1 and is fixed to the main circuit board PCB1 by fixing pins 4. Therefore, by utilizing the second radiating fin, effective heat dissipation of the back can be realized, and a better heat dissipation effect is achieved.
According to embodiment 1, the heat generating devices are dispersedly arranged on the main circuit board and the plurality of sub circuit boards inserted on the main circuit board, the plurality of output interfaces are arranged on the same sub circuit board, and the devices having a large heat generation amount are arranged on the edge side of the main surface of the main circuit board and are contacted with the main surface of the main circuit board by the U-shaped heat sink to dissipate heat.
< modification of embodiment 1>
Fig. 7 and 8 are perspective views of the circuit board layout in the electronic terminal charger according to modification 1 of embodiment 1, as viewed from above and below, respectively. In this modification 1, the sub circuit board PCB2 and the PCB3 are arranged in parallel, and the storage capacitors C1, C2, C3, and C4 are arranged in a straight line and are provided on the edge side of the main surface of the main circuit board PCB 1.
Fig. 9 and 10 are perspective views of the circuit board layout in the electronic terminal charger according to modification 2 of embodiment 1, as viewed from above and from below, respectively. In modification 2, the main circuit board PCB1 is L-shaped, a filter is mounted on a sub-circuit board located at an input end (a portion of the L-shape protruding outward) of the main circuit board, and an output interface and components in the DC/DC converter are provided on the sub-circuit board located at an output end of the main circuit board. A rectifier and a transformer are respectively installed on two edge sides of the middle part, and an energy storage capacitor is installed between the rectifier and the transformer. And an output capacitor and a safety capacitor are arranged on two sides of the auxiliary circuit board at the output end.
< embodiment 2>
Hereinafter, the configuration of an electronic terminal charger according to embodiment 2 of the present invention will be described with reference to fig. 11 and 12. Fig. 11 and 12 show a perspective view of the electronic terminal charger according to embodiment 2 of the present invention, viewed from the top case side, and a perspective view of the electronic terminal charger, viewed from the bottom case side, respectively.
Fig. 12 shows an example in which the number of output ports and sockets is 4, but the number of output ports and sockets is not limited to 4, and may be any integer value.
As shown in fig. 11 and 12, a plurality of heat radiation holes are provided on end surfaces of a top cover and a bottom case of a case of the electronic terminal charger, respectively.
Preferably, a plurality of louvres of top cap are two parallel straight lines and set up the both sides at the plug, and a plurality of louvres of drain pan are a plurality of concentric circles and set up the centre at a plurality of output interface, and better radiating effect can be realized to this kind of structure.
According to embodiment 2, a plurality of heat dissipation holes are respectively formed in the end faces of the top cover and the bottom shell of the housing of the electronic terminal charger, so that a plurality of heat dissipation air channels can be formed inside the housing, the heat dissipation speed of an internal heating device is increased, and a better heat dissipation effect is achieved.
< embodiment 3>
Hereinafter, the configuration of an electronic terminal charger according to embodiment 3 of the present invention will be described with reference to fig. 13 and 14. Fig. 13 is an installation diagram showing an electronic terminal charger according to embodiment 3 of the present invention. Fig. 14 is a view showing a multi-groove structure formed in a heat sink of the electronic terminal charger shown in fig. 13.
As shown in fig. 13, the first heat sink 1 and the second heat sink 2 are combined to form a closed rectangular parallelepiped, and the first heat sink 1 and the second heat sink 2 are each provided with a plurality of grooves formed along the extending direction of the housing to form a heat dissipation air duct. Of course, it is also possible to provide either one of the first and second heat radiation fins 1 and 2 with a plurality of grooves formed along the extending direction of the housing.
As shown in fig. 14, a plurality of grooves are uniformly formed around the rectangle on the cross section of the cuboid formed by the heat sink, and these groove structures can form a plurality of heat dissipation air channels inside the casing, thereby increasing the heat dissipation speed of the internal heating device and obtaining better heat dissipation effect.
According to embodiment 3, the heat dissipation fins are provided with the plurality of grooves formed along the extending direction of the housing, so that a plurality of heat dissipation air channels can be formed inside the housing, the heat dissipation speed of the internal heating device is increased, and a better heat dissipation effect is obtained.
In any of the configurations of embodiments 1 to 3, a fan may be further provided in the housing cavity of the housing, and the fan may forcibly dissipate heat, thereby obtaining a better heat dissipation effect.
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 (14)
1. An electronic terminal charger, comprising:
the shell is provided with a top cover and a bottom shell, an accommodating cavity is formed by the top cover and the bottom shell, and a plurality of insertion holes are formed in the end face of the bottom shell;
the circuit board is accommodated in the accommodating cavity and used for arranging a charger circuit, and comprises a main circuit board and a plurality of auxiliary circuit boards inserted on the main circuit board, a plurality of power devices in the charger circuit are installed on the main surface of the main circuit board, and a plurality of output interfaces exposed from the plurality of jacks are arranged on a first auxiliary circuit board positioned at the output end of the main circuit board; and
the plug is arranged on the end face of the top cover and is electrically connected with the input end of the charger circuit,
the plurality of power devices are mounted with one of the faces thereof being close to the edge side of the main face of the main circuit board,
the electronic terminal charger further includes a U-shaped first heat sink disposed so as to surround the main surface of the main circuit board, and heat dissipation surfaces on both sides of the first heat sink are in contact with the plurality of power devices, respectively.
2. The electronic terminal charger of claim 1,
a second heat sink is provided in contact with the back surface of the main circuit board.
3. The electronic terminal charger of claim 1 or 2,
the end surfaces of the top cover and the bottom shell are respectively provided with a plurality of heat dissipation holes.
4. The electronic terminal charger of claim 3,
the plurality of heat dissipation holes of the top cover are two parallel straight lines and are arranged on two sides of the plug, and the plurality of heat dissipation holes of the bottom shell are a plurality of concentric circles and are arranged in the middle of the plurality of output interfaces.
5. The electronic terminal charger of claim 1,
the first heat sink is provided with a plurality of grooves formed in the extending direction of the housing.
6. The electronic terminal charger of claim 2,
the second heat sink is provided with a plurality of grooves formed in the extending direction of the housing.
7. The electronic terminal charger of claim 1 or 2,
a fan is arranged in the accommodating cavity.
8. The electronic terminal charger of claim 1 or 2,
the filter in the charger circuit is disposed on the second sub circuit board.
9. The electronic terminal charger of claim 1 or 2,
the energy storage capacitor in the charger circuit is arranged on the main surface of the main circuit board, the switching element in the charger circuit is arranged on the back surface of the main circuit board, and the energy storage capacitor and the switching element are arranged close to each other.
10. The electronic terminal charger of claim 1 or 2,
the main circuit board and the plurality of auxiliary circuit boards are both PCB boards.
11. The electronic terminal charger of claim 1 or 2,
the main circuit board is set to be L-shaped.
12. The electronic terminal charger of claim 1 or 2,
two of the plurality of sub circuit boards are arranged in parallel.
13. The electronic terminal charger of claim 1 or 2,
two of the plurality of sub circuit boards are disposed orthogonally.
14. The electronic terminal charger of claim 1,
the power devices comprise a rectifier and a transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121449097.6U CN213846302U (en) | 2021-06-29 | 2021-06-29 | Electronic terminal charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121449097.6U CN213846302U (en) | 2021-06-29 | 2021-06-29 | Electronic terminal charger |
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| Publication Number | Publication Date |
|---|---|
| CN213846302U true CN213846302U (en) | 2021-07-30 |
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| CN202121449097.6U Active CN213846302U (en) | 2021-06-29 | 2021-06-29 | Electronic terminal charger |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115733221A (en) * | 2022-11-28 | 2023-03-03 | 广东斯泰克电子科技有限公司 | USB quick charger |
| WO2023112721A1 (en) * | 2021-12-17 | 2023-06-22 | パナソニックＩｐマネジメント株式会社 | Wiring tool |
-
2021
- 2021-06-29 CN CN202121449097.6U patent/CN213846302U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023112721A1 (en) * | 2021-12-17 | 2023-06-22 | パナソニックＩｐマネジメント株式会社 | Wiring tool |
| CN115733221A (en) * | 2022-11-28 | 2023-03-03 | 广东斯泰克电子科技有限公司 | USB quick charger |
| CN115733221B (en) * | 2022-11-28 | 2023-10-31 | 广东斯泰克电子科技有限公司 | USB quick charger |
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