CN211127232U - Automatic power-off charger - Google Patents
Automatic power-off charger Download PDFInfo
- Publication number
- CN211127232U CN211127232U CN201922483786.8U CN201922483786U CN211127232U CN 211127232 U CN211127232 U CN 211127232U CN 201922483786 U CN201922483786 U CN 201922483786U CN 211127232 U CN211127232 U CN 211127232U
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- power
- relay
- charging wire
- module
- charger
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Abstract
The utility model discloses an automatic outage charger, the purpose provides one kind for the mobile device power supply, especially for energy-conserving, the safety of the mobile device power supply that has OTG power supply function, the charger that facilitates the use. It includes power module, charging wire, detection control module and relay, and its technical scheme's main points are provided with first touch switch on the charging wire, and switch one end is connected at output terminal's CC foot, and the other end passes through relay second contact group and links to each other with power module output negative pole, and relay first contact group sets up between power module and mains input. When the mobile device is used, the mobile device is triggered to start OTG power supply to supply power to the charger by pressing the first touch switch, the detection control module drives the relay to suck after being powered on, meanwhile, the mobile device OTG power supply is closed, the power supply module supplies power to the mobile device, and after the mobile device is charged or stops being used, the relay disconnects the charger from the electric connection of the commercial power.
Description
Technical Field
The utility model relates to a charger technical field, more specifically relates to an automatic outage charger.
Background
At present, most of the commonly used chargers for supplying power to mobile equipment do not have the function of automatically disconnecting from the mains supply when charging is completed, and in addition, most of people cannot timely remove the charger from the socket after charging is completed, so that the charger is in a power-on state for a long time to cause meaningless power consumption, and internal devices are powered on for a long time to cause premature failure, even potential safety hazards are caused.
At present, a commercially available power-off charger actually only cuts off the electric connection between the charger and the mobile device, but the charger is still in an electrified working state, so that the problems of premature aging failure and potential safety hazards caused by long-term electrification of components and parts cannot be fundamentally solved.
There is also a commercially available power-off charger in which a battery is built in as a starting power source of the charger, and although the connection with the commercial power can be completely disconnected, the built-in battery is difficult to prevent aging and failure, and may bring new safety hazards if the battery is not selected properly.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome not enough among the prior art, the utility model provides an automatic power-off charger.
In order to achieve the above purpose, the utility model adopts the technical scheme that: an auto-power-off charger comprising: charging wire, relay, power module, detection control module. Wherein, be equipped with first touch switch on the output terminal of charging wire, be equipped with a control line in the charging wire, be equipped with output control switch between detection control module's power output end and the charging wire positive pole, be equipped with the first diode that prevents against current between power module and detection module, the charging wire with charge and be equipped with the second between the module and prevent against current the diode, still be equipped with second touch switch between power module and commercial power input.
The charging wire comprises a control line and a pair of power supply transmission lines, and the output end of the charging wire is a TYPE-C terminal or a MICRO USB terminal; the relay is a double-pole double-throw relay, wherein a moving contact in a first contact group is connected to a mains supply, a normally open contact is connected to the input end of the charging module, a normally closed contact is connected to a second touch switch, a moving contact in a second contact group is connected to a control line in a charging wire, and a normally closed contact is connected to the negative electrode of the charging wire; one pole of a first touch switch arranged on the output terminal of the charging wire and a control wire in the charging wire are sequentially connected with a movable contact of a second contact group of the relay, when the output terminal of the charging wire is TYPE-C, the other pole of the first touch switch is connected with the CC pin of the output terminal, and the normally closed contact of the second contact group is connected with the negative pole of the charging wire; when the output terminal of the charging wire is MICROUSB, the other pole of the first touch switch is connected with the ID pin of the output terminal, and the normally closed contact of the second contact group is connected with the negative pole of the charging wire; the first touch switch, the control line and the relay second contact group form an OTG power supply trigger circuit of the mobile device; the second trigger switch is arranged between the commercial power and the input end of the charging module, one end of the second trigger switch is connected to the commercial power through the normally closed contact of the first contact group of the relay, and the other end of the second trigger switch is connected with the normally closed contact of the first contact group; the output control switch is an NMOS tube, a PMOS tube or a relay.
Due to the adoption of the technical scheme, the utility model discloses advantage compared with prior art is: utilize the OTG power supply function that mobile device has to provide the initialization power supply for the charger, establish switch on charging terminal through simple touching just can with charger and commercial power intercommunication to with being connected the complete disconnection of charger and commercial power when the power supply is accomplished, not only the energy saving, also greatly reduced because of the ageing safe risk that brings of components and parts, also avoided the inconvenience that the plug charger brought repeatedly simultaneously.
Drawings
FIG. 1 is a block diagram of an embodiment of the present invention;
fig. 2 is a schematic view of the appearance of the present invention.
Fig. 3 is a schematic diagram of a charging line portion according to the present invention.
In the figure:
1 second contact group movable contact of relay
2 normally closed contact of second contact group of relay
Normally open contact of second contact group of 3 relay
4 relay first contact group movable contact
Normally closed contact of first contact group of 5 relay
Normally open contact of first contact group of 6 relay
10 Relay
11 second touch switch
20 charging wire
21 first touch switch
22 power supply output terminal
23 charging wire body
24 positive electrode of charging wire
25 negative pole of charging wire
26 control line
27 diode
30 power supply module
31 diode
40 detection control module
41 detection unit
42 control unit
43 output control switch
Detailed Description
The invention will be further described with reference to the following detailed description and drawings:
the charger shown in fig. 1, 2 and 3 includes a charging wire 20, a first touch switch 21 is disposed on an output terminal 22 of the charging wire 20, the terminal TYPE is preferably TYPE-C, and the first touch switch 21 is preferably a self-resetting tact switch; the charging wire 20 at least comprises a power line anode 24, a power line cathode 25 and a control line 26 in the wire body, one end of the first touch switch 21 is electrically connected with the CC pin of the power output terminal 22, the other end of the first touch switch is connected with the movable contact 1 of the relay second contact group through the control line 26, the normally closed contact 2 of the relay second contact group is connected with the charging wire cathode 25, and the above connections form an OTG trigger circuit.
One input end of the power module 30 is directly connected with the mains supply, the other end of the power module is connected with the normally open contact 6 of the first contact group of the relay, and the movable contact 4 of the first contact group of the relay is connected with the mains supply; a touch switch 11 is bridged between the normally closed contact 5 of the first relay contact group and the normally open contact 6 of the first relay contact group, and a reverse current prevention diode 31 is connected between the charging module 30 and the detection control module 40.
The relay 10 is preferably a double-pole double-throw relay, and the first contact group is used for connecting commercial power to commercial power; the second contact group is used for forming an OTG trigger loop together with the first touch switch 21 and the control line 26; it will be apparent that the relay 10 may be used with a combination of relays of its type to accomplish the same purpose.
The output control switch 43 is used for isolating the output end of the detection control module 40 from the positive electrode 24 of the charging wire when the mobile device outputs the OTG power supply, and is used for controlling the power supply output by the charging module 40 to transmit to the mobile device; preferably, the output control switch 43 of this embodiment uses an NMOS transistor, and obviously, a PMOS transistor and a relay can achieve similar technical effects.
The detection control module 40 has a power input, an output end and a control output end, and functions include detecting the output current value of the power supply module 30, controlling the relay 10 and controlling the output control switch 43, and the specific execution process is that the relay 10 is driven to attract immediately after the detection control module 40 is powered on, at this time, the OTG power supply of the mobile device stops, the detection control module 40 is powered by the power module 30 alone, then the output control switch 43 is driven to close, the mobile device starts to be powered, in the power supply process, when the detection control module 40 detects that the output current is continuously lower than a preset threshold value, the relay 10 is controlled to release, the charging module 30 is disconnected from the mains supply, and the charger stops working when the whole power is lost.
The utility model discloses a basis is the starting power supply who triggers and utilize external power source as the charger, and then inserts the commercial power with the charger, in this embodiment, has two kinds of starting methods:
the first starting mode is that when an output plug of a charger is connected to a mobile device with an OTG power supply function, the touch switch 21 is closed, the mobile device starts to supply power to the charger through a charging wire 23, after a detection control module 40 is powered on, the relay 10 is driven to suck, a first contact group of the relay connects commercial power to a power module 30, an OTG trigger circuit is disconnected at the same time, the mobile device stops supplying power to the outside, when the detection control module detects that the power supply of the mobile device stops, the detection control module 40 drives an output control switch 43 to be closed, the power module 30 starts to supply power to the mobile device, when the detection control module 40 detects that the output current is continuously lower than a preset threshold value within a certain time, the control module controls the relay 10 to reset, the charger is powered off integrally, and the whole process is finished.
The second starting mode is that when the mobile device is in a shutdown state or the mobile device does not have an OTG power supply function, the second touch switch 11 is pressed, the power module directly accesses to the commercial power, the charging module 30 converts the commercial power into a power supply, the detection control module 40 is powered on and drives the relay 10 to attract, the first contact set of the relay 10 connects the power module 10 to the commercial power, the detection control module 40 then drives the output control switch 43 to be closed, the power module 30 starts to supply power to the mobile device, when the detection control module 40 detects that the output current is continuously lower than a preset threshold value within a certain time, the control module controls the relay 10 to reset, the charger loses power integrally, and the whole process is finished.
The utility model discloses an automatic outage charger, the potential safety hazard that unnecessary consume, the components and parts of the energy brought because of the charger inserts the commercial power for a long time and age for a long time and bring that can be fine also need not frequent plug charger, lets the use of charger become more simple and convenient simultaneously.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. An auto-power-off charger comprising: charging wire, relay, power module, detection control module, characterized by, be equipped with first touch switch on the output terminal of charging wire, the charging wire in be equipped with a control line, be equipped with output control switch between detection control module's power output end and charging wire output line positive pole, power module and detection control module between be equipped with first anti-reflux diode, charging wire and charging module between be equipped with the second and prevent anti-reflux diode, power module and commercial power input terminal between still be equipped with second touch switch.
2. The automatic power-off charger according to claim 1, wherein the charging cable body comprises a control line and a pair of power transmission lines, and the output current of the charger and the current input from the mobile device share the pair of power transmission lines in the charging cable and have the same polarity; the output end of the charging wire is a TYPE-C terminal or a MICRO USB terminal.
3. The automatic power-off charger according to claim 1, wherein the relay is a double-pole double-throw relay, wherein the movable contact in the first contact group is connected to the mains supply, the normally open contact is connected to the input end of the charging module, the normally closed contact is connected to the second touch switch, the movable contact in the second contact group is connected to the control line in the charging wire, and the normally closed contact is connected to the negative electrode of the charging wire.
4. The automatic power-off charger according to claim 1, 2 or 3, wherein one pole of the first touch switch on the output terminal of the charging wire and the control wire in the charging wire are sequentially connected with the normally closed contact of the second contact group of the relay, when the output terminal of the charging wire is TYPE-C, the other pole of the first touch switch is connected with the pin of the output terminal CC, and the movable contact of the second contact group is connected with the negative pole of the output wire in the charging wire; when the charging output terminal is MICROUSB, the other pole of the first touch switch is connected with the ID pin of the output terminal, and the movable contact of the second contact group is connected with the negative pole of the output line in the charging wire.
5. The automatic power-off charger according to claim 4, wherein the OTG power supply trigger loop of the mobile device is composed of a first touch switch, a control wire and a relay second contact group.
6. An automatic power-off charger according to claim 1 or 3, wherein a second trigger switch is connected between the mains supply and the input end of the charging module in a bridging manner, one end of the second trigger switch is connected to the mains supply through the normally closed contact of the first contact group of the relay, and the other end of the second trigger switch is connected to the normally closed contact of the first contact group.
7. The automatic power-off charger according to claim 1, wherein the output control switch is an NMOS transistor, a PMOS transistor or a relay, and is driven by the detection control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922483786.8U CN211127232U (en) | 2019-12-31 | 2019-12-31 | Automatic power-off charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922483786.8U CN211127232U (en) | 2019-12-31 | 2019-12-31 | Automatic power-off charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211127232U true CN211127232U (en) | 2020-07-28 |
Family
ID=71706306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922483786.8U Active CN211127232U (en) | 2019-12-31 | 2019-12-31 | Automatic power-off charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211127232U (en) |
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2019
- 2019-12-31 CN CN201922483786.8U patent/CN211127232U/en active Active
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