CN207967998U - Double USB onboard chargers - Google Patents
Double USB onboard chargers Download PDFInfo
- Publication number
- CN207967998U CN207967998U CN201820290286.5U CN201820290286U CN207967998U CN 207967998 U CN207967998 U CN 207967998U CN 201820290286 U CN201820290286 U CN 201820290286U CN 207967998 U CN207967998 U CN 207967998U
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- Prior art keywords
- circuit
- usb
- charging interface
- usb charging
- double
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a kind of double USB onboard chargers; include the power input being electrically connected with automotive interior vehicle power supply interface and output to the first USB charging interface of external equipment and the second USB charging interface, overcurrent-overvoltage protecting circuit, the first filter circuit, decompression and flow increasing circuit, the second filter circuit, detection sample circuit and short-circuit protection circuit have been sequentially connected electrically between the power input and first USB charging interface and the second USB charging interface.The utility model is equipped with double USB charging interfaces, it can be directly to multiple charging external equipments, meet the use demand of user, pass through its circuit design simultaneously, the total 3.1A electric currents output of double-USB interface, 1.0A interfaces are stablized with the output of 2.1A interface voltage electric currents, and the use that can preferably promote terminal user is enjoyed.
Description
Technical field
The utility model is related to onboard charger more particularly to a kind of double USB onboard chargers.
Background technology
It is commonly used currently, the portable electronic devices such as mobile phone, IPAD, digital camera have become modern's essential day
Product are especially travelling outdoors, are going on business during the journey, and these electronic equipments are generally equipped with rechargeable battery, special to fill
Electric appliance and data line are used for transmission, the equipment charge etc. of data.But since dedicated charger needs to use AC power, so
It is the selection that electronic equipment carries out that charging is only by vehicle-mounted USB charger.
In the prior art, universal vehicle-mounted USB charger UAB charging interfaces only there are one, cannot simultaneously give it is multiple external
Equipment is powered, it is difficult to meet the use demand of user.Also, onboard charger currently used in the market, output voltage electricity
Stream is unable to reach standard output.
Invention content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of high power, double-USB interface, voltage electricity
The stable double USB onboard chargers of stream output.
The technical solution of the utility model is as follows：A kind of double USB onboard chargers, including connect with automotive interior vehicle power supply
The power input and export to the first USB charging interface of external equipment and the second USB charging interface, the electricity that mouth is electrically connected
Over-current over-voltage protection electricity has been sequentially connected electrically between source input terminal and first USB charging interface and the second USB charging interface
Road, the first filter circuit, decompression and flow increasing circuit, the second filter circuit, detection sample circuit and short-circuit protection circuit.
In the above-mentioned technical solutions, the power input is electrically connected with the DC12-24V vehicle power supplies of automotive interior, with
Make the power input input 12-24V direct currents.
In the above-mentioned technical solutions, the direct current of 12-24V is depressurized to 5V by the decompression and flow increasing circuit.
In the above-mentioned technical solutions, the current limliting after the short-circuit protection circuit of the electric current after the decompression to 1A and exports extremely
First USB charging interface, the electric current that first USB charging interface can detect load automatically adjust output current
Size.
In the above-mentioned technical solutions, the current limliting after the short-circuit protection circuit of the electric current after the decompression to 2.1A and exports
To second USB charging interface.
Compared with the existing technology, the beneficial effects of the utility model are：The utility model is equipped with double USB charging interfaces,
The use demand of user can be met, while passing through its circuit design, double-USB interface directly to multiple charging external equipments
Total 3.1A electric currents output, 1.0A interfaces are stablized with the output of 2.1A interface voltage electric currents, can preferably promote the use of terminal user
It enjoys.
Description of the drawings
Fig. 1 is the structural principle block diagram of the utility model；
Fig. 2 is the circuit diagram of the utility model.
Specific implementation mode
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
It please refers to Fig.1, Fig. 2, a kind of double USB onboard chargers provided by the utility model, it is a variety of vehicle-mounted to be suitable for
The onboard charger of application, double USB onboard chargers include the power input being electrically connected with automotive interior vehicle power supply interface
It holds 11 and exports to external equipment the first USB charging interface 12 and the second USB charging interface 13, power input 11 and first
Overcurrent-overvoltage protecting circuit 21, the first filtered electrical have been sequentially connected electrically between USB charging interface 12 and the second USB charging interface 13
Road 22, decompression and flow increasing circuit 23, the second filter circuit 24, detection sample circuit 25 and short-circuit protection circuit 26.
In the present embodiment, power input 11 is electrically connected with the DC12-24V vehicle power supplies of automotive interior, so that power supply is defeated
Enter 11 input 12-24V direct currents of end, DC12-24V is accessed, after overcurrent-overvoltage protecting circuit 21, then by the first filter circuit
Then 22 filterings are depressurized to 5V by decompression and flow increasing circuit 23, then distinguish current limliting to 1.0A and 2.1A after short-circuit protection circuit 26
And exported respectively to the first USB charging interface 12 and the second USB charging interface 13, then give outer power supply.Wherein, the first USB
The electric current that charging interface 12 can detect load automatically adjusts the size of output current.
Double USB charging interfaces that the double USB onboard chargers of the present embodiment are equipped with, in the case of correct connection, Ke Yizhi
It holds multiple mobile devices to plug in, meets the use demand of user, while by its circuit design, double-USB interface is total
3.1A electric currents export, and 1.0A interfaces are stablized with the output of 2.1A interface voltage electric currents, and the use that can preferably promote terminal user is enjoyed
By.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all in this practicality
All any modification, equivalent and improvement etc., should be included in the guarantor of the utility model made by within novel spirit and principle
Within the scope of shield.
Claims (5)
1. a kind of double USB onboard chargers, it is characterised in that：Include that the power supply that is electrically connected with automotive interior vehicle power supply interface is defeated
Enter end and output to the first USB charging interface of external equipment and the second USB charging interface, the power input and described the
Be sequentially connected electrically between one USB charging interface and the second USB charging interface overcurrent-overvoltage protecting circuit, the first filter circuit,
Decompression and flow increasing circuit, the second filter circuit, detection sample circuit and short-circuit protection circuit.
2. double USB onboard chargers according to claim 1, it is characterised in that：The power input and automotive interior
DC12-24V vehicle power supplies electrical connection so that the power input input 12-24V direct currents.
3. double USB onboard chargers according to claim 2, it is characterised in that：The decompression and flow increasing circuit is by 12-24V
Direct current be depressurized to 5V.
4. double USB onboard chargers according to claim 3, it is characterised in that：Electric current after the decompression is through described short
Current limliting to 1A and is exported to first USB charging interface after road protection circuit, and first USB charging interface can detect negative
The electric current of load automatically adjusts the size of output current.
5. double USB onboard chargers according to claim 4, it is characterised in that：Electric current after the decompression is through described short
Current limliting to 2.1A and is exported to second USB charging interface after road protection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820290286.5U CN207967998U (en) | 2018-03-01 | 2018-03-01 | Double USB onboard chargers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820290286.5U CN207967998U (en) | 2018-03-01 | 2018-03-01 | Double USB onboard chargers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207967998U true CN207967998U (en) | 2018-10-12 |
Family
ID=63740718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820290286.5U Expired - Fee Related CN207967998U (en) | 2018-03-01 | 2018-03-01 | Double USB onboard chargers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207967998U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109889658A (en) * | 2019-01-25 | 2019-06-14 | 努比亚技术有限公司 | Accessory and mobile terminal for mobile terminal |
| CN110535203A (en) * | 2019-08-22 | 2019-12-03 | 苏州科可瑞尔航空技术有限公司 | A kind of airborne portable USB charging module of high reliability |
| CN111865072A (en) * | 2020-08-20 | 2020-10-30 | 贵州贵航汽车零部件股份有限公司华阳电器公司 | Charging conversion circuit based on vehicle-mounted USB interface |
-
2018
- 2018-03-01 CN CN201820290286.5U patent/CN207967998U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109889658A (en) * | 2019-01-25 | 2019-06-14 | 努比亚技术有限公司 | Accessory and mobile terminal for mobile terminal |
| CN110535203A (en) * | 2019-08-22 | 2019-12-03 | 苏州科可瑞尔航空技术有限公司 | A kind of airborne portable USB charging module of high reliability |
| CN110535203B (en) * | 2019-08-22 | 2024-08-09 | 苏州科可瑞尔航空技术有限公司 | High-reliability onboard portable USB charging module |
| CN111865072A (en) * | 2020-08-20 | 2020-10-30 | 贵州贵航汽车零部件股份有限公司华阳电器公司 | Charging conversion circuit based on vehicle-mounted USB interface |
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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: 20181012 Termination date: 20200301 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |