CN209786831U - USB pin high-voltage protection device for quick charging - Google Patents
USB pin high-voltage protection device for quick charging Download PDFInfo
- Publication number
- CN209786831U CN209786831U CN201920641449.4U CN201920641449U CN209786831U CN 209786831 U CN209786831 U CN 209786831U CN 201920641449 U CN201920641449 U CN 201920641449U CN 209786831 U CN209786831 U CN 209786831U
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- China
- Prior art keywords
- protection device
- input
- control circuit
- intermediate relay
- input interface
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- Expired - Fee Related
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Abstract
The utility model discloses a USB pin high voltage protection device for quick charge, include: the device comprises a shell, an output interface and an input interface; the shell is horizontally arranged, an input hole is formed in the left end face, an output hole is formed in the right end face, and a cavity for mounting protection equipment is formed in the shell; the left end of the input interface extends out of the input hole, the right end of the input interface is arranged in the input hole, and the side surface of the input interface is tightly attached to the inner wall of the input hole; the output interface is arranged in the output hole; the protection device includes: the analog-to-digital converter, the control circuit and the intermediate relay; the input interface is respectively connected with the intermediate relay and the analog-to-digital converter through electric wires; the intermediate relay is connected with the output interface through a wire; the analog-to-digital converter is connected with the control circuit through a wire; the control circuit is connected with the intermediate relay through an electric wire. The utility model discloses can effectively protect the pin not bear too high voltage, effectively prolong USB pin life.
Description
Technical Field
the utility model relates to an electronic product field specifically is a USB pin high voltage protection device for quick charge.
Background
Along with the development of science and technology, people also are more and more high to the requirement of the speed of charging, but because power supply unit's voltage is unstable, the too big electric current can't be born to the pin in the USB interface sometimes, will send out to scald, shortens the life of charging wire. At present, no protection device capable of protecting the USB pin from bearing the over-high voltage exists in the market.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an it is not enough to overcome above-mentioned condition, aims at providing the technical scheme that can solve above-mentioned problem.
A USB pin high voltage protection device for fast charging, comprising: the device comprises a shell, an output interface and an input interface; the shell is horizontally arranged, an input hole is formed in the left end face, an output hole is formed in the right end face, and a cavity for mounting protection equipment is formed in the shell; the left end of the input interface extends out of the input hole, the right end of the input interface is arranged in the input hole, and the side surface of the input interface is tightly attached to the inner wall of the input hole; the output interface is arranged in the output hole; the protection device includes: the analog-to-digital converter, the control circuit and the intermediate relay; the input interface is respectively connected with the intermediate relay and the analog-to-digital converter through electric wires; the intermediate relay is connected with the output interface through a wire; the analog-to-digital converter is connected with the control circuit through a wire; the control circuit is connected with the intermediate relay through an electric wire.
When the rapid charging is carried out, the input port transmits the analog signal to the analog-to-digital converter, and the analog-to-digital converter converts the analog signal into a digital signal and transmits the digital signal to the control circuit; if the voltage is lower than the safety voltage, the control circuit controls the intermediate relay to be switched on; if the voltage is higher than the safe voltage, the control circuit controls the intermediate relay to be disconnected, so that the pin is protected.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) Through the mode that sets up protection equipment, when input voltage was higher than normal voltage, the intermediate relay outage was avoided damaging the USB pin.
(2) Through the mode that sets up output port and input port, can play the effect of protection to the USB pin when need not reform transform original charging wire.
(3) Through the mode that sets up the display screen, can show current charging power, conveniently observe.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a sectional view of the present invention.
Fig. 2 is a schematic structural diagram of the middle display screen of the present invention.
Fig. 3 is a block diagram of the present invention.
In the figure: the device comprises a shell 1, an input interface 2, a connecting lug 21, an output interface 3, an analog-to-digital converter 4, a control circuit 5, an intermediate relay 6 and a display screen 7.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 3, in an embodiment of the present invention, a USB pin high voltage protection device for fast charging includes: the device comprises a shell 1, an output interface 3 and an input interface 2; the shell 1 is horizontally arranged, an input hole is formed in the left end face, an output hole is formed in the right end face, and a cavity for mounting protection equipment is formed in the shell; the left end of the input interface 2 extends out of the input hole, the right end is arranged in the input hole, and the side surface is tightly attached to the inner wall of the input hole; the output interface 3 is arranged in the output hole; the protection device includes: an analog-to-digital converter 4, a control circuit 5 and an intermediate relay 6; the input interface 2 is respectively connected with the intermediate relay 6 and the analog-to-digital converter 4 through electric wires; the intermediate relay 6 is connected with the output interface 3 through an electric wire; the analog-to-digital converter 4 is connected with the control circuit 5 through a wire; the control circuit 5 is connected to the intermediate relay 6 via an electric wire.
When the rapid charging is performed, the input port transmits the analog signal to the analog-to-digital converter 4, and the analog-to-digital converter 4 converts the analog signal into a digital signal and transmits the digital signal to the control circuit 5; if the voltage is lower than the safety voltage, the control circuit 5 controls the intermediate relay 6 to be switched on; if the voltage is higher than the safe voltage, the control circuit 5 controls the intermediate relay 6 to be switched off, thereby protecting the pins.
As a further embodiment of the present invention, the input port is a USB male port (a type a plug); the output port is a USB female port (A-type socket); a connecting lug 21 is formed at the right end of the input port, and the left end face of the connecting lug 21 is tightly attached to the inner wall of the left side of the cavity; the front end of the shell 1 is provided with a display screen 7, and the display screen 7 is connected with the control circuit 5 through an electric wire.
As a further embodiment of the present invention, the analog-to-digital converter 4 employs an AD7656 chip; the control circuit 5 adopts an AT89C52 chip; the intermediate relay 6 adopts a JZX-22F (D) -2Z relay.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. A USB pin high voltage protection device for fast charging, comprising: the device comprises a shell, an output interface and an input interface; the shell is horizontally arranged, an input hole is formed in the left end face, an output hole is formed in the right end face, and a cavity for mounting protection equipment is formed in the shell; the left end of the input interface extends out of the input hole, the right end of the input interface is arranged in the input hole, and the side surface of the input interface is tightly attached to the inner wall of the input hole; the output interface is arranged in the output hole; the protection device includes: the analog-to-digital converter, the control circuit and the intermediate relay; the input interface is respectively connected with the intermediate relay and the analog-to-digital converter through electric wires; the intermediate relay is connected with the output interface through a wire; the analog-to-digital converter is connected with the control circuit through a wire; the control circuit is connected with the intermediate relay through an electric wire.
2. The USB pin high voltage protection device for fast charging according to claim 1, wherein the input interface is a USB male port.
3. The USB pin high voltage protection device for fast charging according to claim 1, wherein the output interface is a USB female port.
4. The USB pin high-voltage protection device for quick charging according to claim 1, wherein the right end of the input interface is formed with a connection lug, and the left end face of the connection lug is tightly attached to the left inner wall of the cavity.
5. The USB pin high voltage protection device for quick charge according to claim 1, wherein the front end of the housing is provided with a display screen, and the display screen is connected with the control circuit through a wire.
6. The USB pin high voltage protection device for fast charging according to claim 1, wherein the analog-to-digital converter employs an AD7656 chip; the control circuit adopts an AT89C52 chip; the intermediate relay adopts a JZX-22F (D) -2Z relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920641449.4U CN209786831U (en) | 2019-05-07 | 2019-05-07 | USB pin high-voltage protection device for quick charging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920641449.4U CN209786831U (en) | 2019-05-07 | 2019-05-07 | USB pin high-voltage protection device for quick charging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209786831U true CN209786831U (en) | 2019-12-13 |
Family
ID=68804885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920641449.4U Expired - Fee Related CN209786831U (en) | 2019-05-07 | 2019-05-07 | USB pin high-voltage protection device for quick charging |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209786831U (en) |
-
2019
- 2019-05-07 CN CN201920641449.4U patent/CN209786831U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191213 Termination date: 20200507 |
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| CF01 | Termination of patent right due to non-payment of annual fee |