CN209823473U - Multi-port USB intelligent shunting and temperature protection safety charger - Google Patents
Multi-port USB intelligent shunting and temperature protection safety charger Download PDFInfo
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- CN209823473U CN209823473U CN201920944003.9U CN201920944003U CN209823473U CN 209823473 U CN209823473 U CN 209823473U CN 201920944003 U CN201920944003 U CN 201920944003U CN 209823473 U CN209823473 U CN 209823473U
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Abstract
The utility model relates to a multi-port USB intelligent shunting and temperature protection safety charger, which comprises an adapter and a multi-port output socket, wherein the adapter is connected with the multi-port output socket through a wire; many mouthfuls of output row inserts include the casing and locate PCB circuit board in the casing, PCB circuit board is equipped with the control unit, a plurality of USB interface and temperature sensor, temperature sensor is used for the monitoring temperature in the casing and convey the temperature value to the control unit, the control unit is used for according to a plurality of USB interface connection treat the quantity of battery charging outfit with the temperature control signal control of temperature sensor conveying each the output voltage/electric current of USB interface realizes treating the safe of battery charging outfit. The utility model has the advantages of simple structure, easily production, low cost, facilitate promotion.
Description
Technical Field
The utility model relates to a charger technical field, concretely relates to many mouthfuls of USB intelligence reposition of redundant personnel and temperature protection safety charger.
Background
In people's daily life, people are increasingly using various digital products, such as smart phones, tablet computers, smart watches, smart bracelets, and the like. In the using process, the digital products are often required to be charged at the same time, a plurality of chargers and data lines enable rooms to be disordered, and inconvenience is brought to people when people go out to carry the chargers and the data lines. Therefore, the multi-port charger is suitable for transportation, and can charge a plurality of digital products simultaneously due to the small size and portability of the multi-port charger, so that the multi-port charger is popular with people. However, when the multi-port charger is fully loaded, the output current is large, so that the heat is generated much, and particularly when the multi-port charger is used on a sofa or is covered carelessly, accidents are easy to happen.
SUMMERY OF THE UTILITY MODEL
In view of the above, there is a need to provide a multi-port USB intelligent shunt and temperature protection safety charger capable of intelligently adjusting output current and effectively controlling temperature.
A multi-port USB intelligent shunting and temperature protection safety charger comprises an adapter and a multi-port output socket, wherein the adapter is connected with the multi-port output socket through a wire; many mouthfuls of output row inserts include the casing and locate PCB circuit board in the casing, PCB circuit board is equipped with the control unit, a plurality of USB interface and temperature sensor, temperature sensor is used for the monitoring temperature in the casing and convey the temperature value to the control unit, the control unit is used for according to a plurality of USB interface connection treat the quantity of battery charging outfit with the temperature control signal control of temperature sensor conveying each the output voltage/electric current of USB interface realizes treating the safe of battery charging outfit.
Furthermore, the control unit is provided with an output end voltage sampling terminal and a first induction end, the PCB is further provided with a voltage detection circuit, the voltage detection circuit is arranged between the control unit and the plurality of USB interfaces, the output end voltage sampling terminal is used for collecting the voltage value of the voltage detection circuit and feeding back the collected voltage value to the control unit through the first induction end, and the control unit controls the output voltages of the plurality of USB interfaces according to the received voltage value.
Further, the control unit adopts a constant-voltage constant-current DC-DC voltage reduction circuit, and the control unit adopts a CX8852 chip.
Furthermore, a plurality of USB interfaces are arranged on the side surface of the PCB and penetrate through the shell.
Further, the temperature sensor comprises a heat conducting component and a temperature sensing circuit, wherein the heat conducting component is used for conducting heat of the shell to the temperature sensing circuit, and the temperature sensing circuit is electrically connected to the control unit and used for transmitting the temperature value to the control unit.
Furthermore, the control unit is also provided with a second sensing end which is electrically connected to the temperature sensing circuit.
Further, the temperature sensing circuit comprises a thermistor and a current sensing switch, the thermistor is connected to the heat conducting component, the current sensing switch is connected to the second sensing end, the resistance value of the thermistor decreases along with the increase of the temperature in the shell, and when the temperature in the shell is larger than a preset value, the resistance value of the thermistor decreases to trigger the current sensing switch.
Furthermore, the PCB circuit board is further provided with a current detection circuit, the current detection circuit is arranged between the control unit and the plurality of USB interfaces, when the current induction switch is communicated, the detected current value is sent to the second induction end by the current monitoring circuit, and the control unit controls the output currents of the plurality of USB interfaces according to the circuit value received by the second induction end.
Further, the adapter adopts an AC/DC inverter, and the adapter is used for converting commercial power into low-voltage direct current required by the input end of the multi-port output extension socket.
Further, the adapter employs foldable pins, the adapter having a housing with a recess for receiving the foldable pins.
In the above-mentioned many mouthfuls of USB intelligence reposition of redundant personnel and temperature protection safety charger, output voltage sampling terminal with temperature sensor conveys the voltage value and the temperature value of gathering to the control unit, the control unit is through adjusting output current, reaches the reduction the purpose of the temperature that many mouthfuls of output row inserted, simultaneously balanced each the output current of USB interface accomplishes output current and is in each reasonable distribution between the equipment of waiting to charge that USB interface connects. One the problem that a plurality of digital products charge simultaneously can be solved to many mouthfuls of output row inserts, and it is more convenient when going out to carry and use. The utility model has the advantages of simple structure, easily production, low cost, facilitate promotion.
Drawings
Fig. 1 is the embodiment of the present invention provides a modular structure diagram of a multi-port USB intelligent shunt and temperature protection safety charger.
Fig. 2 is the embodiment of the utility model provides a many mouthfuls of USB intelligence reposition of redundant personnel and temperature protection safety charger's hardware structure schematic diagram.
Fig. 3 is the embodiment of the utility model provides a many mouthfuls of USB intelligence reposition of redundant personnel and temperature protection safety charger's circuit structure schematic diagram.
Detailed Description
The present invention will be described in detail with reference to the following embodiments and drawings.
Referring to fig. 1, fig. 2 and fig. 3, a multi-port USB intelligent shunting and temperature protecting safety charger 100 according to an embodiment of the present invention is shown, including an adapter 10 and a multi-port output socket 20, where the adapter 10 and the multi-port output socket 20 are connected by a wire 90; many mouthfuls of output row inserts 20 include the casing and locate PCB circuit board in the casing, PCB circuit board is equipped with the control unit 30, a plurality of USB interface 80 and temperature sensor 60, temperature sensor 60 is used for the monitoring temperature in the casing and convey the temperature value to the control unit 30, the control unit 30 is used for according to a plurality of USB interface 80 connect treat the quantity of charging equipment with the temperature control signal control that temperature sensor 60 conveyed each USB interface 80's output voltage/electric current realizes treating the safe of charging equipment.
Specifically, the wire 90 is used to connect the adapter 10 and the multiple output socket 20, and since the wire 90 itself causes loss, the length of the wire 90 is not easily too long, so as to avoid unnecessary loss and reduction of the input voltage of the multiple output socket 20. Meanwhile, too long cables cause inconvenience in carrying when going out.
Further, the control unit 30 employs a constant voltage and constant current DC-DC voltage reduction circuit. Preferably, the control unit 30 employs a CX8852 chip.
Further, the control unit 30 has an output end voltage sampling terminal 40 and a first sensing end 31, the PCB is further provided with a voltage detection circuit 50, the voltage detection circuit 50 is disposed between the control unit 30 and the plurality of USB interfaces 80, the output end voltage sampling terminal 40 is configured to collect a voltage value of the voltage detection circuit 50 and feed back the collected voltage value to the control unit 30 through the first sensing end 31, and the control unit 30 controls output voltages of the plurality of USB interfaces 80 according to the received voltage value. The control unit 30 further has a second sensing terminal 32, and the temperature sensor 60 includes a heat conducting member and a temperature sensing circuit, and the second sensing terminal 32 is electrically connected to the temperature sensing circuit. The heat conducting component is used for conducting heat of the shell to the temperature sensing circuit, and the temperature sensing circuit is electrically connected to the control unit 30 and used for transmitting a temperature value to the control unit 30.
Further, the temperature sensing circuit includes a thermistor 61 and a current sensing switch 62, the thermistor 61 is connected to the heat conducting member, the current sensing switch 62 is connected to the second sensing terminal 32, a resistance value of the thermistor 61 decreases as the temperature in the housing increases, and when the temperature in the housing is greater than a preset value, the resistance value of the thermistor 61 decreases to trigger the current sensing switch 62.
Further, the PCB is further provided with a current detection circuit 70, the current detection circuit 70 is disposed between the control unit 30 and the plurality of USB interfaces 80, when the current sensing switch 62 is connected, the detected current value is sent to the second sensing terminal 32 by the current monitoring current, and the control unit 30 controls the output current of the plurality of USB interfaces 80 according to the circuit value received by the second sensing terminal 32.
Specifically, the control unit 30 adjusts the voltage values output to the plurality of USB interfaces 80 through the voltage value of the voltage detection circuit 50 fed back by the output terminal voltage sampling terminal 40, so that the voltage values of the plurality of USB interfaces 80 are kept stable, and the requirement of accurate constant voltage charging of the device to be charged in the charging process is met.
Specifically, when the device to be charged is connected to the USB interface 80, the voltage detection circuit 50 monitors the voltage change of the USB interface 80 and feeds back the voltage change to the control unit 30 through the output voltage sampling terminal 40, and the control unit 30 distributes the output voltage to each of the USB interfaces 80 to complete charging of the device to be charged connected to each of the USB interfaces 80. That is, when the USB interfaces 80 include the quick-charging USB interface 80, and only the quick-charging USB interface 80 is connected to the device to be charged, the control unit 30 outputs a high-voltage direct-charging voltage of 9V or 12V to the quick-charging USB interface 80, so as to achieve a maximum charging power of 18W. When other USB interfaces 80 are connected to the devices to be charged, the control unit 30 distributes the output voltage to each USB interface 80 in a balanced manner, so as to charge each device to be charged.
Specifically, when the multi-port output extension socket 20 works normally, the output voltage of each USB interface 80 is controlled to be 5V ± 5%, and the output current is controlled to be within a constant current of 2.7A. The heat conducting component is made of heat conducting materials, and is preferably a copper sheet. The heat conducting component is in contact with the shell, the temperature of the shell is conducted to the thermistor 61 through the heat conducting component, when the temperature of the shell is higher than a preset value 65 ℃, the resistance value of the thermistor 61 is reduced, the current sensing switch 62 is conducted, the detected output current value of the USB interface 80 is fed back to the control unit 30 through the current detection circuit 70, the control unit 30 adjusts the output current value, the temperature of the multi-port output socket 20 is reduced, the charger is ensured to be in a safe state, and at the moment, the charger can only maintain the basic charging state of equipment.
Specifically, the plurality of USB interfaces 80 are divided into a plurality of groups in units of groups. In this embodiment, each set of the USB interfaces 80 includes two USB interfaces 80, and the output voltage and the output current of each USB interface are controlled by one control unit 30; in this embodiment, the 4 USB interfaces 80 are respectively controlled by the two control units 30, and the groups are independent from each other, so that the control unit 30 can more accurately control the output voltage/current of each USB interface 80, and the stability of the charger is improved.
Further, the adaptor 10 adopts an AC/DC inverter, and the adaptor 10 is used for converting the commercial power into the low-voltage direct current required by the input end of the multi-port output socket 20. The adapter 10 employs foldable pins, and the adapter 10 has a housing with recesses for receiving the foldable pins. The plurality of USB interfaces 80 are arranged on the side surface of the PCB and penetrate through the shell.
Specifically, the adapter 10 with the separation of many mouthfuls of output row inserts 20 avoids the adapter 10 with many mouthfuls of output row inserts 20 during operation because of the high temperature influences work efficiency, also makes the charger safer to avoid taking place accident.
Specifically, when not in use, the foldable pins are accommodated in the grooves of the adapter 10, which is convenient for carrying or accidental damage.
In the above-mentioned multi-port USB intelligent shunting and temperature protection safety charger 100, the output end voltage sampling terminal 40 and the temperature sensor 60 transmit the collected voltage value and temperature value to the control unit 30, the control unit 30 achieves the purpose of reducing the temperature of the multi-port output extension socket 20 by adjusting the output voltage/current, and simultaneously balances each output voltage/current of the USB interfaces 80, thereby completing the reasonable distribution of the output voltage/current among the devices to be charged connected by the USB interfaces 80. One the multi-port output extension socket 20 can solve the problem of simultaneous charging of a plurality of digital products, and is more convenient to carry and use when going out. The utility model has the advantages of simple structure, easily production, low cost, facilitate promotion.
It should be noted that the present invention is not limited to the above embodiments, and other changes can be made by those skilled in the art according to the spirit of the present invention, and all the changes made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. A multi-port USB intelligent shunting and temperature protection safety charger is characterized by comprising an adapter and a multi-port output socket, wherein the adapter is connected with the multi-port output socket through a wire; many mouthfuls of output row inserts include the casing and locate PCB circuit board in the casing, PCB circuit board is equipped with the control unit, a plurality of USB interface and temperature sensor, temperature sensor is used for the monitoring temperature in the casing and convey the temperature value to the control unit, the control unit is used for according to a plurality of USB interface connection treat the quantity of battery charging outfit with the temperature control signal control of temperature sensor conveying each the output voltage/electric current of USB interface realizes treating the safe of battery charging outfit.
2. The multi-port USB intelligent shunt and temperature protection safety charger according to claim 1, wherein the control unit has an output voltage sampling terminal and a first sensing terminal, the PCB is further provided with a voltage detection circuit, the voltage detection circuit is disposed between the control unit and the plurality of USB interfaces, the output voltage sampling terminal is configured to collect a voltage value of the voltage detection circuit and feed back the collected voltage value to the control unit through the first sensing terminal, and the control unit controls output voltages of the plurality of USB interfaces according to the received voltage value.
3. The multi-port USB intelligent shunt and temperature protection safety charger according to claim 2, wherein the control unit employs a constant voltage constant current DC-DC voltage reduction circuit, and the control unit employs a CX8852 chip.
4. The multi-port USB intelligent shunting and temperature protection safety charger according to claim 1, wherein the plurality of USB interfaces are disposed on a side surface of the PCB and penetrate through the housing.
5. The multi-port USB intelligent shunt and temperature protection safety charger of claim 1, wherein said temperature sensor comprises a heat conducting component and a temperature sensing circuit, said heat conducting component is used for conducting heat of said housing to said temperature sensing circuit, said temperature sensing circuit is electrically connected to said control unit for transmitting temperature value to said control unit.
6. The multi-port USB intelligent shunting and temperature protection safety charger of claim 5, wherein the control unit further has a second sensing terminal electrically connected to the temperature sensing circuit.
7. The multi-port USB intelligent shunt and temperature protection safety charger according to claim 6, wherein the temperature sensing circuit comprises a thermistor and a current sensing switch, the thermistor is connected to the heat conducting component, the current sensing switch is connected to the second sensing terminal, the resistance of the thermistor decreases as the temperature in the housing increases, and when the temperature in the housing is higher than a preset value, the resistance of the thermistor decreases to trigger the current sensing switch.
8. The multi-port USB intelligent shunt and temperature protection safety charger according to claim 7, wherein the PCB is further provided with a current detection circuit, the current detection circuit is disposed between the control unit and the plurality of USB interfaces, when the current sensing switch is connected, the current detection circuit sends a detected current value to the second sensing terminal, and the control unit controls the output currents of the plurality of USB interfaces according to a circuit value received by the second sensing terminal.
9. The multi-port USB intelligent shunt and temperature protection safety charger of claim 1, wherein said adapter uses an AC/DC inverter, said adapter is used to convert the mains power into the low voltage DC power required by the input of said multi-port output patch cord.
10. The multi-port USB intelligent shunt and temperature protection security charger of claim 1, wherein said adapter employs foldable pins, said adapter having a housing with a recess for receiving said foldable pins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920944003.9U CN209823473U (en) | 2019-06-21 | 2019-06-21 | Multi-port USB intelligent shunting and temperature protection safety charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920944003.9U CN209823473U (en) | 2019-06-21 | 2019-06-21 | Multi-port USB intelligent shunting and temperature protection safety charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209823473U true CN209823473U (en) | 2019-12-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920944003.9U Active CN209823473U (en) | 2019-06-21 | 2019-06-21 | Multi-port USB intelligent shunting and temperature protection safety charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209823473U (en) |
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2019
- 2019-06-21 CN CN201920944003.9U patent/CN209823473U/en active Active
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Effective date of registration: 20220510 Granted publication date: 20191220 |
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