CN201797362U - multi-function charger - Google Patents

Abstract

A multifunctional charger comprises a housing, a power input interface unit, an AC power supply adapter, and a battery charging unit, wherein the power input interface is used for receiving external power supply input and providing power supply for other modules in the charger; the AC power supply adapter is connected with an external civil pilot voltage and transmits the pilot voltage to the power input unit; and the battery charging unit is used for receiving the current of the power input interface unit and charging lithium or nickel-hydrogen battery. The multifunctional charger is characterized in that a voltage dropping unit and a USB interface charging unit are further comprised, wherein the voltage dropping unit is used for receiving the current of the power input interface unit and performing voltage dropping; and the USB interface charging unit is connected with the voltage dropping unit and charging an electric device with a USB interface. By adopting the multifunctional charger, charging in various input modes and output modes can be realized, and portability, convent use, less resource consumption and low cost are realized.

Description

multi-function charger

technical field

The utility model relates to the field of chargers, in particular to a multifunctional charger.

Background technique

With the rapid development of the technology era, all kinds of digital products and electronic products have become the necessities of people's life. When enjoying the happiness and convenience brought by new technology products, the battery charging problem of these products is also more and more troubled. People, when purchasing electronic products, have to worry about the charging of batteries, which restricts the development of digital and electronic products.

At present, there are many types of chargers on the market, including those that directly charge mobile phones, travel chargers that charge mobile phone batteries, those that charge Ni-MH batteries, and those that directly charge lithium batteries for digital products, etc. etc., and the polarity of the battery cannot be automatically recognized. The input method may adopt one of DC12V, USB interface or battery, etc., and the output method is mostly limited to one. After analysis, these chargers have a single charging method and function. Therefore, it is necessary to purchase a variety of chargers to meet the charging needs of various devices, which is not convenient to carry and use, but also causes a waste of property for consumers and a waste of public resources, which is not an environmentally friendly product.

At present, some powerful large companies at home and abroad have carried out some research and development on multi-function chargers. The purpose is to increase the input and output modes of the charger, so that the use of the charger is no longer single. For example, the latest patent provides There are 3 input methods, namely common 220V AC power input, vehicle 12V input and computer USB interface 5V input. At the same time, it can charge various types of mobile phones, digital cameras, digital video cameras and other digital products with USB interfaces, and can also charge 4 AA batteries. Firstly, the patent adds an input method under the current single input method, but it does not consider the connection problem. For these three input methods, the product needs to design three different interfaces; second, the output In terms of the method, the charging conditions of mobile phones and digital products are actually considered, because the charging voltages of mobile phones, digital products, and batteries are different, and there is no adjustable function; MP3, MP4, PDA, PSP game consoles, 5#, 7# Ni-MH/Ni-Cd batteries and other products charging.

Contents of the invention

In order to solve the above problems, the utility model provides a multi-function charger which is convenient to carry.

The technical solution adopted by the utility model is: a multifunctional charger, including a shell and a power input interface unit for receiving external power input and providing power for other modules inside the charger;

An AC power adapter for connecting with an external civil standard voltage and passing it to the power input unit;

A battery charging unit for receiving power input interface unit current and charging lithium or nickel metal hydride batteries;

It is characterized in that it also includes:

A step-down unit for receiving and stepping down the current of the power input interface unit;

A USB interface charging unit for connecting with the step-down unit and charging electrical appliances with the USB interface.

A preferred solution of the utility model is: it also includes a DC output unit for connecting with the step-down unit and performing low-voltage DC output.

Further, the DC output unit is provided with a 3.6V output interface and a 7.2V output interface.

Another preferred solution of the utility model is: it also includes an automobile power adapter for connecting with the cigarette lighter hole of the automobile and connecting with the power input interface unit.

Another preferred solution of the present utility model is: the outer shell includes an upper shell and a lower shell, and one end of the upper shell is provided with a Ni-MH battery charging pressure plate.

Further, the middle part of the upper case is provided with a lithium battery charging pressure plate.

Furthermore, the other end of the upper case is provided with a reversible lithium battery charging contact plate.

The technical advantage of the utility model lies in that it can realize charging in various input modes and output modes, is convenient to carry and use, saves resources, and has low cost.

Description of drawings

Fig. 1 is the front view of this embodiment;

Fig. 2 is the left view of present embodiment;

Fig. 3 is a side view of the present embodiment;

Fig. 4 is the internal circuit block diagram of the present embodiment;

FIG. 5 is an electrical schematic diagram of the internal circuit of this embodiment.

Detailed ways

Referring to FIG. 1 , FIG. 2 , and FIG. 3 , the multifunctional charger housing 1 includes an upper housing 6 and a lower housing 7 . One end of the upper case 6 is provided with a flippable lithium battery contact plate 5, the lithium battery contact plate 5 is fixed to the upper case 6 by a pin, and flipped based on the pin. This method makes lithium battery charging convenient and stable and reliable.

The other end of the upper case 6 is provided with a Ni-MH battery charging plate 4 , and the middle part is provided with a lithium battery charging plate 3 . It is used to prevent the battery from falling off due to position changes when charging, which is more convenient and practical.

The front end of this embodiment is provided with a DC input port 9 , a DC output port 11 , and a USB output port 10 , and the DC input port is an automobile power input.

As shown in FIG. 4 , the circuit in this embodiment includes a car power adapter, an AC power adapter, a power input interface unit, a step-down unit, a DC output unit, a battery charging unit, and a USB charging unit. In different occasions, the AC power adapter and the car power adapter are used respectively, and passed to the power input interface unit, and then the voltage is stepped down by the step-down unit, which can be DC output or USB charging; or the power input interface unit is directly passed to the battery charging unit, The lithium battery is charged separately through the trickle charging circuit and the polarity discrimination circuit of the battery charging unit.

As shown in Figure 5, the electrical principle in this embodiment is described as follows. Battery charging: After the product is powered on, KA7500 starts to work. The 8-pin and 11-pin output PWM signals oscillate through the Q1 switch and then filter through D1 and L1 to output DC voltage for lithium battery charging. At this time, connect the lithium battery and use O1 to distinguish the positive and negative polarity of the battery to control whether K1 is pulled in and judge the positive and negative polarity. At this time, U1 is used to detect whether the battery is full. If the battery is full, the first pin of U1A outputs a high potential. Control N2, and the display light will stop flashing.

USB charging: output 5V through 7805 and connect to USB output. DC output: The DC output part is divided into two types. When the voltage switch S1 is not closed, the power supply outputs 7.2V voltage through D5 through LM317. After S1 is closed, N7 is turned on to change the adjustment terminal of LM317. At this time, LM317 outputs 3.6V voltage.

Various input and output modes make the multifunctional embodiment applicable to various electrical appliances and work in various environments.

Everyone skilled in the art should know that although the utility model has been further described according to the above-mentioned embodiments, the inventive idea of the utility model is not limited to the present embodiment. Within the scope of utility model protection.

Claims (7)

1. OnePlant multifunctional charger, comprise shell (1) and a power input interface unit that is used to receive the external power source input and power supply is provided for inner other modules of this charger;

An AC power source adapter that is used for being connected and passing to power input unit with outside civil standards voltage,

One is used to receive the power input interface cell current also is the battery charging unit of lithium or Ni-MH battery charging;

It is characterized in that, also comprise:

A pressure unit that is used to receive power input interface cell current and step-down;

One is used for being connected with pressure unit and for containing the USB interface charhing unit of USB interface electrical appliance charging.

2. multifunctional charger according to claim 1 is characterized in that: also comprise a direct current output unit that is used for being connected and carrying out with pressure unit low-voltage direct output.

3. multifunctional charger according to claim 2 is characterized in that: described direct current output unit is provided with 3.6V output interface and 7.2V output interface.

4. multifunctional charger according to claim 1 is characterized in that: comprise that also is used for an automobile power source adapter that is connected and is connected with the power input interface unit with the automobile lighter hole.

5. multifunctional charger according to claim 1 is characterized in that: described shell (1) comprises upper casing (6) and lower casing (7), and described upper casing (6) one ends are provided with Ni-MH battery charging pressing plate.

6. multifunctional charger according to claim 5 is characterized in that: the middle part of described upper casing (6) is provided with lithium cell charging pressing plate (3).

7. according to the said multifunctional charger of claim 5, it is characterized in that: the other end of described upper casing (6) is provided with turnover lithium cell charging contact plate (5).

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