CN211063857U - Circuit board heat source dispersion structure of power supply charger - Google Patents
Circuit board heat source dispersion structure of power supply charger Download PDFInfo
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- CN211063857U CN211063857U CN201922080338.3U CN201922080338U CN211063857U CN 211063857 U CN211063857 U CN 211063857U CN 201922080338 U CN201922080338 U CN 201922080338U CN 211063857 U CN211063857 U CN 211063857U
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Abstract
The utility model relates to a power charger field, concretely relates to circuit board heat source dispersed structure of power charger. The power supply charger at least comprises a switch MOS tube circuit, a transformer circuit, a rectification filter circuit and an anti-reverse connection circuit, the circuit board heat source dispersing structure comprises a main circuit board provided with the power supply charger circuit, and the switch MOS tube circuit, the transformer circuit, the rectification filter circuit and the anti-reverse connection circuit are dispersedly arranged on the main circuit board. The beneficial effects of the utility model reside in that, compared with the prior art, the utility model discloses a circuit board heat source dispersed structure of power charger will switch MOS pipe circuit, transformer circuit, rectification filter circuit and prevent that reverse connection circuit dispersed layout sets up on main circuit board, prevent that the heat from too concentrating to effectively air blast/air exhaust or heat radiation structure realizes the heat dissipation, improve power charger's operational environment, maintain suitable operating temperature.
Description
Technical Field
The utility model relates to a power charger field, concretely relates to circuit board heat source dispersed structure of power charger.
Background
The power charger is a power supply conversion device for small portable electronic equipment and electronic appliances, generally comprises components such as a shell, a transformer, an inductor, a capacitor, a control IC (integrated circuit), a PCB (printed circuit board) and the like, and the working principle of the power charger is that alternating current input is converted into direct current output.
However, the power charger generates a large amount of heat energy during operation, and based on the existing circuit structure, it is one of the problems of intensive research by those skilled in the art to improve the heat dissipation efficiency and reduce the heat energy concentration.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to prior art's above-mentioned defect, provide a circuit board heat source dispersed structure of power charger, solve the power charger and can produce a large amount of heat energy at the during operation problem.
The utility model provides a technical scheme that its technical problem adopted is: the circuit board heat source dispersing structure of the power charger at least comprises a switch MOS tube circuit, a transformer circuit, a rectification filter circuit and an anti-reverse connection circuit, and the circuit board heat source dispersing structure comprises a main circuit board provided with the power charger circuit, and the switch MOS tube circuit, the transformer circuit, the rectification filter circuit and the anti-reverse connection circuit are dispersedly arranged on the main circuit board.
Wherein, the preferred scheme is: the transformer circuit comprises a transformer, and the transformer is arranged at the center of the main circuit board or close to the center; the switch MOS tube circuit, the rectification filter circuit and the anti-reverse connection circuit are arranged on the edge of the main circuit board or far away from the transformer.
Wherein, the preferred scheme is: switch MOS pipe circuit includes the MOS pipe, circuit board heat source dispersion structure still includes the first heating panel with MOS pipe laminating setting.
Wherein, the preferred scheme is: the rectifying and filtering circuit comprises a capacitor or/and diode, and the circuit board heat source dispersion structure further comprises a second heat dissipation plate attached to the capacitor or/and diode.
Wherein, the preferred scheme is: the second heat dissipation plate comprises a main heat dissipation plate and a fin plate wound to form a winding cavity, and the capacitor or the diode is arranged in the winding cavity in a penetrating mode.
Wherein, the preferred scheme is: the main circuit board is also provided with a plurality of temperature sensors, and the temperature sensors can be arranged close to one or more circuits in the switch MOS tube circuit, the transformer circuit, the rectification filter circuit and the reverse connection preventing circuit.
Wherein, the preferred scheme is: the power supply charger also comprises a first control circuit for controlling the work of the switching MOS tube circuit and a second control circuit which is connected with the transformer circuit and outputs pulse voltage; and the circuit board heat source dispersion structure also comprises a first sub circuit board provided with a first control circuit and a second sub circuit board provided with a second control circuit.
Wherein, the preferred scheme is: the first sub circuit board and the second sub circuit board are respectively and vertically arranged at the edge of the main circuit board or the air duct.
Wherein, the preferred scheme is: the components of the first sub circuit board and the second sub circuit board face the outside of the main circuit board.
Wherein, the preferred scheme is: the main circuit board, the first sub circuit board and the second sub circuit board are all sealed with glue.
The beneficial effects of the utility model reside in that, compared with the prior art, the utility model discloses a circuit board heat source dispersed structure of power charger will switch MOS pipe circuit, transformer circuit, rectification filter circuit and prevent that reverse connection circuit dispersed layout sets up on main circuit board, prevent that the heat from too concentrating to effectively air blast/air exhaust or heat radiation structure realizes the heat dissipation, improve power charger's operational environment, maintain suitable operating temperature.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a schematic circuit diagram of the power supply charger of the present invention;
fig. 2 is a schematic structural diagram of a first embodiment of a circuit board heat source dispersing structure according to the present invention;
fig. 3 is a schematic structural view of a second embodiment of the heat source dispersing structure of the circuit board according to the present invention;
fig. 4 is a schematic structural view of a second heat dissipating plate according to the present invention;
fig. 5 is a schematic structural diagram of a power supply charger based on a first control circuit and a second control circuit;
fig. 6 is a schematic structural diagram of the first sub circuit board, the second sub circuit board and the main circuit board of the present invention.
Detailed Description
The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, the present invention provides a preferred embodiment of a circuit board heat source dispersing structure of a power charger.
A circuit board heat source dispersing structure of a power supply charger at least comprises a switch MOS tube circuit 230, a transformer circuit 220, a rectification filter circuit 240 and an anti-reverse connection circuit 250, wherein the circuit board heat source dispersing structure comprises a main circuit board 11 provided with the power supply charger circuit, and the switch MOS tube circuit 230, the transformer circuit 220, the rectification filter circuit 240 and the anti-reverse connection circuit 250 are dispersedly arranged on the main circuit board 11.
Specifically, the power supply charger is connected to the commercial power 100, the commercial power 100 is converted into direct current through the ac-to-dc circuit 210 and is input into the transformer circuit 220, the input end of the transformer circuit 220 is connected to the switching MOS transistor circuit 230 to control the input end of the transformer circuit 220 to work, the output end of the transformer circuit 220 is connected to the rectifying and filtering circuit 240 and outputs external power to charge the battery 300, and the electric energy output end of the power supply charger is also connected to the reverse connection prevention circuit 250 to prevent reverse connection of the external battery 300; therefore, the switching MOS transistor circuit 230, the transformer circuit 220, the rectification filter circuit 240 and the reverse connection preventing circuit 250 generate a large amount of heat energy in the working process, and in the layout of the components of the main circuit board 11, the switching MOS transistor circuit 230, the transformer circuit 220, the rectification filter circuit 240 and the reverse connection preventing circuit 250 are dispersedly arranged on the main circuit board 11 to prevent the heat from being excessively concentrated, and effectively realize heat dissipation through a blowing/exhausting or heat dissipation structure, improve the working environment of the power supply charger, and maintain a proper working temperature.
In this embodiment, a plurality of temperature sensors are further disposed on the main circuit board 11, and the temperature sensors may be disposed near one or more of the switching MOS transistor circuit 230, the transformer circuit 220, the rectifying-filtering circuit 240, and the reverse connection preventing circuit 250. The temperature inside the power supply charger, especially the temperature of a plurality of heat sources, is comprehensively monitored, and corresponding operation, such as turning off the power supply charger, alarming or improving the working power of a fan, is carried out when the temperature is abnormal.
In the present embodiment, and referring to fig. 2, the transformer circuit 220 includes a transformer 221, and the transformer 221 is disposed at or near the center of the main circuit board 11; the switching MOS tube circuit 230, the rectifying and filtering circuit 240 and the reverse connection preventing circuit 250 are arranged at the edge of the main circuit board 11 or far away from the transformer 221.
The transformer 221 is a device for changing an ac voltage by using the principle of electromagnetic induction, and inevitably has copper loss (coil resistance heat generation) and iron loss (core heat generation) to generate a large amount of heat energy, and since the transformer 221 has a large volume relative to other components, it is preferable to dispose the transformer 221 at the center or near the center of the main circuit board 11, and dispose the switching MOS transistor circuit 230, the rectifying and smoothing circuit 240, and the reverse connection preventing circuit 250 at the edge of the main circuit board 11 or away from the transformer 221 with reference to the transformer 221.
The switching prevention MOS tube circuit 230, the rectification filter circuit 240 and the reverse connection prevention circuit 250 are affected by heat of the transformer 221, so that the heat is excessively concentrated, and the internal temperature of the power supply charger is increased in surge during operation.
As shown in fig. 3 and 4, the present invention provides a preferred embodiment of the switching MOS transistor 231.
The switching MOS tube circuit 230 includes an MOS tube 231, and the circuit board heat source dispersion structure further includes a first heat dissipation plate 510 attached to the MOS tube 231. The first heat dissipating plate 510 is fixed to the main circuit board 11 and disposed as close to the edge of the main circuit board 11 as possible, away from the transformer 221, and the MOS tube 231 is disposed next to the first heat dissipating plate 510, and the MOS tube 231 is fixed to the first heat dissipating plate 510 by screws.
And, in order to improve the heat dissipation efficiency of the first heat dissipation plate 510, it is preferable to dispose the first heat dissipation plate 510 in the air duct to increase the contact area with the flowing air, and in order not to affect the flow of the air duct, it is preferable to dispose in parallel to the wind direction of the air duct.
In this embodiment, the rectifying and filtering circuit 240 includes a capacitor or/and a diode, and the circuit board heat source dispersing structure further includes a second heat sink 520 attached to the capacitor or/and the diode.
The principle is basically similar to the MOS tube 231 and the first heat dissipation plate 510, and particularly, the second heat dissipation plate 520 includes a main heat dissipation plate 521 and a fin plate 522 wound to form a winding cavity 5221, into which the capacitor or the diode is inserted. That is, since the capacitor or/and the diode has a tubular structure, the fin plate 522 may be wound, a winding cavity 5221 is formed on the main heat dissipation plate 521, the capacitor or the diode is disposed through the winding cavity 5221, and the capacitor or/and the diode is completely wrapped by the fin plate 522, so that the complete heat dissipation is realized.
As shown in fig. 5 and 6, the present invention provides a preferred embodiment of the rectifying and filtering circuit 240.
The power supply charger further comprises a first control circuit 410 for controlling the operation of the switching MOS tube circuit 230, and a second control circuit 420 connected with the transformer circuit 220 for outputting pulse voltage; and, the circuit board heat source dispersion structure further includes a first sub circuit board 12 provided with a first control circuit 410, and a second sub circuit board 13 provided with a second control circuit 420. The power charger outputs a pulse voltage to perform pulse charging on the external lead-acid battery 300 under the control of the second control circuit 420.
Preferably, the first sub circuit board 12 and the second sub circuit board 13 are vertically disposed at an edge of the main circuit board 11 or at the air duct, respectively. And the components of the first sub circuit board 12 and the second sub circuit board 13 are arranged facing the outside of the main circuit board 11.
In this embodiment, the main circuit board 11, the first sub-circuit board 12 and the second sub-circuit board 13 are all encapsulated.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the scope of the present invention, which is intended to cover all equivalent changes and modifications made within the scope of the present invention.
Claims (10)
1. The utility model provides a circuit board heat source dispersed structure of power charger which characterized in that: the power supply charger at least comprises a switch MOS tube circuit, a transformer circuit, a rectification filter circuit and an anti-reverse connection circuit, the circuit board heat source dispersing structure comprises a main circuit board provided with the power supply charger circuit, and the switch MOS tube circuit, the transformer circuit, the rectification filter circuit and the anti-reverse connection circuit are dispersedly arranged on the main circuit board.
2. A circuit board heat source spreading structure according to claim 1, wherein: the transformer circuit comprises a transformer, and the transformer is arranged at the center of the main circuit board or close to the center; the switch MOS tube circuit, the rectification filter circuit and the anti-reverse connection circuit are arranged on the edge of the main circuit board or far away from the transformer.
3. A circuit board heat source spreading structure according to claim 1, wherein: switch MOS pipe circuit includes the MOS pipe, circuit board heat source dispersion structure still includes the first heating panel with MOS pipe laminating setting.
4. A circuit board heat source spreading structure according to claim 1, wherein: the rectifying and filtering circuit comprises a capacitor or/and diode, and the circuit board heat source dispersion structure further comprises a second heat dissipation plate attached to the capacitor or/and diode.
5. A circuit board heat source spreading structure according to claim 4, wherein: the second heat dissipation plate comprises a main heat dissipation plate and a fin plate wound to form a winding cavity, and the capacitor or the diode is arranged in the winding cavity in a penetrating mode.
6. A circuit board heat source spreading structure according to claim 1, wherein: the main circuit board is also provided with a plurality of temperature sensors, and the temperature sensors can be arranged close to one or more circuits in the switch MOS tube circuit, the transformer circuit, the rectification filter circuit and the reverse connection preventing circuit.
7. A circuit board heat source spreading structure according to claim 1, wherein: the power supply charger also comprises a first control circuit for controlling the work of the switching MOS tube circuit and a second control circuit which is connected with the transformer circuit and outputs pulse voltage; and the circuit board heat source dispersion structure also comprises a first sub circuit board provided with a first control circuit and a second sub circuit board provided with a second control circuit.
8. A circuit board heat source spreading structure according to claim 7, wherein: the first sub circuit board and the second sub circuit board are respectively and vertically arranged at the edge of the main circuit board or the air duct.
9. A circuit board heat source spreading structure according to claim 8, wherein: the components of the first sub circuit board and the second sub circuit board face the outside of the main circuit board.
10. A circuit board heat source spreading structure according to claim 7, wherein: the main circuit board, the first sub circuit board and the second sub circuit board are all sealed with glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922080338.3U CN211063857U (en) | 2019-11-27 | 2019-11-27 | Circuit board heat source dispersion structure of power supply charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922080338.3U CN211063857U (en) | 2019-11-27 | 2019-11-27 | Circuit board heat source dispersion structure of power supply charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211063857U true CN211063857U (en) | 2020-07-21 |
Family
ID=71597205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922080338.3U Active CN211063857U (en) | 2019-11-27 | 2019-11-27 | Circuit board heat source dispersion structure of power supply charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211063857U (en) |
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2019
- 2019-11-27 CN CN201922080338.3U patent/CN211063857U/en active Active
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