CN207967997U - One point of three couples of USB lights a cigarette onboard charger - Google Patents

Abstract

The utility model discloses one point of three couples of USB of one kind and lights a cigarette onboard charger,Including the power input being electrically connected with automotive interior vehicle power supply interface and output lights a cigarette interface to the first of external equipment,Second lights a cigarette interface,Third lights a cigarette interface,First USB charging interface and the second USB charging interface,The power input and first lights a cigarette interface,Second lights a cigarette interface,Third lights a cigarette and has been sequentially connected electrically overcurrent-overvoltage protecting circuit between interface,First filter circuit,Bifurcation Control circuit and display circuit,The overcurrent-overvoltage protecting circuit has been sequentially connected electrically between the power input and the first USB charging interface and the second USB charging interface,First filter circuit,Decompression and flow increasing circuit,Second filter circuit,Detect sample circuit and short-circuit protection circuit,The display circuit is electrically connected with the detection sample circuit.Three interfaces that light a cigarette that the utility model is equipped with can use simultaneously, and voltage output is stablized, and the user experience is improved.

Description

One point of three couples of USB lights a cigarette onboard charger

Technical field

The utility model is related to onboard charger, more particularly to one point of three couples of USB of one kind light a cigarette onboard charger.

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.

Use takes electricity to common vehicle-mounted USB charger from cigar lighter socket mostly on the market, by vehicle-mounted USB charger and The USB outlet of vehicle-mounted USB charger, the other end and corresponding intelligent sliding are inserted into the connection of cigar lighter by data line one end Dynamic equipment connection, charges to it to realize.

But in the prior art, universal vehicle-mounted USB charger light a cigarette interface and UAB charging interfaces are only one, cannot It powers simultaneously to multiple external equipments, it is difficult to meet the use demand of user.Therefore one point of three onboard charger in the market It comes into being, and the voltage output of one point of three onboard charger in the market, for three interfaces simultaneously in use, output voltage It is unstable, demand voltage is not achieved, therefore cannot meet final terminal is preferred enjoyment.

Invention content

The purpose of the utility model is to overcome the deficiencies in the prior art, and providing three interfaces that light a cigarette of one kind can make simultaneously With, and one point of three couples of USB that voltage output is stablized light a cigarette onboard charger.

The technical solution of the utility model is as follows：One point of three couples of USB of one kind light a cigarette onboard charger, including with automotive interior Vehicle power supply interface electrical connection power input and output to the first of external equipment light a cigarette interface, second light a cigarette interface, Third lights a cigarette interface, the first USB charging interface and the second USB charging interface, and the power input lights a cigarette with described first and connects Mouthful, second light a cigarette interface, third light a cigarette be sequentially connected electrically between interface overcurrent-overvoltage protecting circuit, the first filter circuit, point Discrimination control circuit and display circuit, between the power input and first USB charging interface and the second USB charging interface It has been sequentially connected electrically the 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, the display circuit are electrically connected with the detection sample 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, described first light a cigarette interface, second light a cigarette interface, third light a cigarette interface output 12-24V Direct current.

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, first USB charging interface and the second USB charging interface export 5V direct currents.

Compared with the existing technology, the beneficial effects of the utility model are：The utility model set there are three light a cigarette interface and Two USB charging interfaces can give multiple external equipments to power simultaneously, meet the use demand of user, while passing through its electricity It designs on road so that the first light a cigarette interface, second interface, third interface that lights a cigarette that lights a cigarette can use simultaneously, and electricity when using simultaneously Pressure output is stablized, and stability is high, promotes user experience.

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 one point of three couples of USB provided by the utility model light a cigarette onboard charger, are suitable In the onboard charger of a variety of vehicular applications, one point of three couples of USB onboard chargers that light a cigarette include and automotive interior vehicle power supply The power input 11 of interface electrical connection and output to the first of external equipment light a cigarette interface 12, second light a cigarette interface 13, the Three light a cigarette interface 14, the first USB charging interface 15 and the second USB charging interface 16, and power input 11 and first light a cigarette interface 12, the second light a cigarette interface 13, third lights a cigarette and has been sequentially connected electrically overcurrent-overvoltage protecting circuit 21, the first filtered electrical between interface 14 Road 22, Bifurcation Control circuit 23 and display circuit 24, power input 11 and the first USB charging interface 15 and the 2nd USB chargings Overcurrent-overvoltage protecting circuit 21, the first filter circuit 22, decompression and flow increasing circuit 25, second has been sequentially connected electrically between interface 16 to filter Wave circuit 26, detection sample circuit 27 and short-circuit protection circuit 28, display circuit 24 are electrically connected with detection sample circuit 27.

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, accesses DC12-24V, after overcurrent-overvoltage protecting circuit 21, reallocation lights a cigarette to first Interface 12, second light a cigarette interface 13, third light a cigarette interface 14 export 12-24V direct currents.

First USB charging interface, 15 and second USB charging interface, 16 exportable 5V direct currents, access vehicle-mounted DC12- 24V, after overcurrent-overvoltage protecting circuit 21, then by the first filter circuit 22, then by decompression and flow increasing circuit 25 by 12- The direct current of 24V is depressurized to 5V, and most output to the first USB charging interface 15 and the 2nd USB is filled after short-circuit protection circuit 28 afterwards Electrical interface 16, the first USB charging interface 15 and the second USB charging interface 16 give outer power supply again.

Meanwhile the electric current after being depressured decompression and flow increasing circuit 25 carries out current sampling by detection sample circuit 27 and voltage is examined It surveys, then precisely shows the data of voltage and current to external digital screen by display circuit 24.

Be divided to three couples of USB to light a cigarette three light a cigarette interface and two USB charging interfaces that onboard charger is equipped with of the present embodiment one, Multiple external equipments can be given to power simultaneously, in the case of correct connection, mobile device can be supported to plug in, three light a cigarette Interface can convert other onboard chargers and be inserted into normal use, meet the use demand of user, while by inside it Circuit design so that the first light a cigarette interface, second interface, third interface that lights a cigarette that lights a cigarette can be used, and be used simultaneously simultaneously When voltage output stablize, stability is high, and the user experience is improved.

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. The onboard charger 1. one point of three couples of USB of one kind light a cigarette, it is characterised in that：Including being electrically connected with automotive interior vehicle power supply interface The power input that connects and output to the first of external equipment light a cigarette interface, the second light a cigarette interface, third light a cigarette interface, first USB charging interface and the second USB charging interface, the power input with described first light a cigarette interface, second light a cigarette interface, the Three, which light a cigarette, has been sequentially connected electrically overcurrent-overvoltage protecting circuit, the first filter circuit, Bifurcation Control circuit and display electricity between interface Road has been sequentially connected electrically the mistake between the power input and first USB charging interface and the second USB charging interface Flow through voltage protection circuit, the first filter circuit, decompression and flow increasing circuit, the second filter circuit, detection sample circuit and short-circuit protection Circuit, the display circuit are electrically connected with the detection sample circuit.
2. The onboard charger 2. one point of three couples of USB according to claim 1 light a cigarette, it is characterised in that：The power input It is electrically connected with the DC12-24V vehicle power supplies of automotive interior, so that the power input inputs 12-24V direct currents.
3. The onboard charger 3. one point of three couples of USB according to claim 2 light a cigarette, it is characterised in that：Described first, which lights a cigarette, connects Mouthful, second light a cigarette interface, third light a cigarette interface output 12-24V direct currents.
4. The onboard charger 4. one point of three couples of USB according to claim 2 light a cigarette, it is characterised in that：The decompression and flow increasing electricity The direct current of 12-24V is depressurized to 5V by road.
5. The onboard charger 5. one point of three couples of USB according to claim 4 light a cigarette, it is characterised in that：The first USB chargings Interface and the second USB charging interface export 5V direct currents.