CN103457304A - charging converter - Google Patents

Abstract

The present invention relates to a charging converter, which is mainly provided with a first protocol interface and a second protocol interface on a single body, and a switching circuit is further provided in the single body; wherein the first protocol interface and the second protocol interface respectively have one or more power pins and one or more data pins, the power pins of the first protocol interface and the power pins of the second protocol interface are correspondingly connected, and the data pins of the second protocol interface are connected to the data pins of the first protocol interface through the switching circuit; the switching circuit is used to select a synchronous mode or a fast charging mode. When the synchronous mode is selected, the first and second protocol interfaces simultaneously establish power and data channels, and when the fast charging mode is selected, the first protocol interface and the second protocol interface only establish power channels, thereby significantly accelerating the charging speed.

Description

charging converter

technical field

The invention relates to a charging converter, in particular to a charging converter which can select a data charging synchronous mode or a fast charging mode.

Background technique

Cell phone is an indispensable communication tool for modern people. Due to the huge market, major mobile phone manufacturers are all trying their best to develop new mobile phones to win the favor of consumers. However, the result of contention among a hundred schools of thought has also led to the problem of waste of resources. Considering the current mobile phone usage situation, a considerable proportion of users will replace their mobile phones every once in a while. In the past, the charging jacks used by major brands of mobile phones are all Self-developed independent specifications, even for different products of the same brand, the charging jacks may not be the same. In this case, new mobile phones must use new chargers, and the chargers of old mobile phones are no longer useful. Due to being eliminated every year The number of replaced mobile phones is huge, so the number of discarded mobile phone chargers is very alarming. According to the statistics of the Global System for Mobile Communications Association (GSMA), 5.1 tons of duplicate chargers are produced globally every year, causing serious waste problems. In order to solve the above problems, on February 17, 2009, the GSMA announced that it will use the Micro-Universal Serial Bus interface (Micro-USB) as a globally unified standard charger specification before 2012. At the end of 2010, the European Union passed the aforementioned charger specification to unify the charging jack of mobile phones into a miniature universal serial bus interface, which will be fully implemented in 2012. In other words, all newly launched mobile phones must use the miniature universal serial bus interface. charging jack. Due to the unified specification of the charging jack, it can effectively solve the problem of resource waste, and the new mobile phone charger is estimated to have 50% lower standby power consumption than the existing charger, so it has multiple advantages.

As known to those skilled in the art, the Universal Serial Bus (USB) was originally a technical specification for computer input and output interfaces. Therefore, in addition to the power pin (VBUS), the pins (PIN) of the Micro-USB interface also have data pins (D-, D+). In addition to transmitting data between devices, it also supplies power to USB peripheral devices. Once the mobile phone is connected to the computer through the micro-Universal Serial Bus interface, in addition to transmitting data between the mobile phone and the computer, the computer can also charge the mobile phone. Data is the main factor, so the charging current is 500mA, and the charging speed is relatively slow. On the contrary, if no data is transmitted, only simple charging (hereinafter referred to as fast charging mode), the charging current will increase to 700~800mA. If the current latest technology U3 The current boost of the USB interface can reach a maximum of 900mA, which can increase the charging speed. However, if there is no special design for the existing miniature universal serial bus interface, the mobile phone must be connected to the charger or computer through the miniature universal serial bus interface, which must be in a synchronous mode. For users who simply want to charge, they must wait for a long time for charging time, unless a dedicated charger is used.

It can be seen from the above that the mobile phone charger will use the miniature universal serial bus interface as the standard interface of the charging jack, but under the standard specification of the universal serial bus (USB), the mobile phone can only be charged in the synchronous mode, otherwise it must be charged. It is inconvenient to use a dedicated charger, so further research is needed to find a feasible solution.

Contents of the invention

Therefore, the main purpose of the present invention is to provide a charging converter, which is connected between a device to be charged and the charging equipment to provide a mode switching function, and the user can select the synchronous mode or the fast charging mode according to his own needs, so that it can be used easily. More choice and convenience.

The main technical means adopted to achieve the above-mentioned purpose is to make the aforementioned charging converter include a single body, the single body is separately provided with a first protocol interface, a second protocol interface and a switching switch, and a switching switch is further arranged in the single body circuit, the switch is connected to the switch on the monomer; wherein:

The first protocol interface is a universal serial bus interface, which has a pair of power pins and a pair of data pins; the second protocol interface has more than one pair of power pins and more than one pair of data pins Pins, the power pins of the second protocol interface are correspondingly connected to the power pins of the first protocol interface, and the data pins of the second protocol interface are connected to the data pins of the first protocol interface through a switching circuit;

The switching circuit is switched by a switch to select a synchronous mode or a fast charging mode. In the synchronous mode, the power pin and the data pin of the first protocol interface are respectively connected to the power pin and the data pin of the second protocol interface. , in the fast charging mode, the first protocol interface is only connected to the power pin of the second protocol interface through the power pin.

The above-mentioned charging converter can be connected in series between a device to be charged and a charging device. Before connecting, the synchronous mode or fast charging mode can be selected by switching the switch. If the fast charging mode is selected, the charging device and the charging device will be connected in series. No data channel is established, so the charging device can be quickly charged with a higher charging current by the charging device. The device to be charged can be a mobile phone, and the charging device can be a computer or a charger.

According to the above, the beneficial effects of the present invention are as follows:

1. It is convenient for users to freely choose synchronization mode or fast charging mode according to their own needs.

2. When the user selects the fast charging mode, the charging current can be increased to shorten the charging time.

3. The device to be charged can be applied to various chargers output by the universal serial bus interface, without using a special charger.

Description of drawings

Fig. 1 is a structural perspective view of the first preferred embodiment of the present invention.

Fig. 2 is a circuit diagram of the first preferred embodiment of the present invention.

3A and 3B are schematic diagrams of the circuit operation of the first preferred embodiment of the present invention.

Fig. 4 is another circuit diagram of the first preferred embodiment of the present invention.

Fig. 5 is a structural perspective view of the second preferred embodiment of the present invention.

Fig. 6 is a structural perspective view of a third preferred embodiment of the present invention.

Fig. 7 is a structural perspective view of a fourth preferred embodiment of the present invention.

Detailed ways

In the following, the technical means adopted by the present invention to achieve the intended purpose of the invention will be further described in conjunction with the accompanying drawings and preferred embodiments of the present invention.

As shown in Figure 1, it is a perspective view of the structure of the first preferred embodiment of the present invention, which has a monomer 10, and one end of the monomer 10 is provided with a first protocol interface 11, and the first protocol interface 11 is a universal serial line bus (USB) interface, the opposite end of the monomer 10 is provided with a second protocol interface 12, and one side of the monomer 10 is provided with a toggle switch 13, and the toggle switch 13 is set in the monomer 10. The switching circuit (not shown in the figure) is connected; wherein:

In this embodiment, the first protocol interface 11 is further a miniature universal serial bus interface (Micro-B USB), which is a female slot for a male connector in terms of appearance. The miniature universal serial bus interface is plugged in, and the miniature universal serial bus interface has at least a pair of power supply pins VBUS, GND and a pair of data pins D+, D-.

In the present embodiment, the second protocol interface 12 is a 30-pin connector, especially the communication interface used by Apple Computer Company to produce smart mobile phone iphone and tablet computer ipad. The connector has at least one pair of power connectors. pin BATV and a pair of universal serial bus data pins D+, D-.

In this embodiment, the switching switch 13 is a mechanical switch, which cooperates with the switching circuit in the unit 10 to determine the states of the USB data pins D+ and D− provided on the second protocol interface 12 .

Please refer to FIG. 2, the power pin VBUS of the first protocol interface 11 is connected to the power pin BATV of the second protocol interface 12; a practicable structure of the switching circuit 30 is to include two voltage divider circuits , wherein a voltage divider circuit is composed of two voltage divider resistors R1, R2 connected in series, the nodes connected in series form a voltage divider node, the other end of the voltage divider resistor R1 is connected to the power supply pin BATV of the second protocol interface 12, the other The other end of the voltage-dividing resistor R2 is grounded; another voltage-dividing circuit is also composed of two voltage-dividing resistors R3 and R4 connected in series, and the nodes connected in series form a voltage-dividing node, and the other end of the voltage-dividing resistor R3 is connected to the second protocol interface 12 The power supply pin BATV, and the other end of the other voltage dividing resistor R4 is grounded.

The aforementioned changeover switch 13 is a double-cut switch with two common contacts and four switch contacts S1, S2, S3, S4, one of which is connected to a data pin D- of the second protocol interface 12, and corresponds to two of them. One switch contact S2, S4, the other common contact is connected to a data pin D+ of the second protocol interface 12, and corresponds to two switch contacts S1, S3, and the two switch contacts S2, S1 are connected to the first protocol interface 11 The two data pins D+ and D− are connected correspondingly, and the other two switch contacts S3 and S4 are respectively connected to the voltage dividing nodes of the two voltage dividing circuits of the switching circuit 30 .

When the user switches the switch 13 to the synchronous mode, as shown in FIG. 3A , the two data pins D+ and D- of the second protocol interface 12 pass through the two common contacts of the switch 13 and the two switch contacts S2 and S1 respectively. It is connected to the data pins D+ and D− of the first protocol interface 11 . Therefore, in the aforementioned synchronous mode, if the first and second protocol interfaces 11 and 12 are respectively connected to the charging device and the device to be charged, then the charging device and the device to be charged will simultaneously form a power supply and a data channel, which can transmit data while The device to be charged is charged by the charging device, and its charging current is about 500mA.

If the user only needs charging, the switch 13 can be switched to the fast charging mode, and then the first and second protocol interfaces 11 and 12 are respectively connected to the charging equipment and the device to be charged. In this state, as shown in Figure 3B As shown, the two data pins D+ and D- of the second protocol interface 12 are respectively connected to the voltage dividing nodes of the two voltage dividing circuits of the switching circuit 30 through the two common contacts of the switch 13 and the two switch contacts S4 and S3, so that the charging The data pins D+ and D- of the device obtain a specific potential. Since the data pins D+ and D- of the first protocol interface 11 are cut off from the data pins D+ and D- of the second protocol interface 12, the charging device and the standby Only the power channel is formed between the charging devices, and the charging device is only charged by the charging device. The charging current is about 700~1000mA, and different computers will have different situations.

It can be seen from the above that by using the charging converter of the present invention, the user can choose the synchronous mode or the fast charging mode according to his own needs, and when there is only charging demand, switch it to the fast charging mode to charge at a higher charging current , thereby shortening the charging time. Simultaneously, as long as any charger meets the power specification requirements of the device to be charged (for example, voltage 5V/current 1A or more), it can cooperate with the use of the charging converter of the present invention to charge the device to be charged without using a dedicated charger.

Please refer to Fig. 4 again, the switching circuit 30 set inside the monomer 10 can also be formed by a microcontroller MCU, which makes the data pins of the first and second protocol interfaces 11, 12 all connected to the microcontroller MCU connection, the microcontroller MCU controls the clutch of the data pins of the first and second protocol interfaces 11 and 12 according to the selection of the switch 13, so as to switch between the fast charging mode and the synchronous mode. In this state, the computer can also issue a switching command to the charging converter to select the synchronous mode or the fast charging mode.

Regarding the second preferred embodiment of the present invention, please refer to that shown in Fig. 5, the difference from the first preferred embodiment is that the first protocol interface 11 provided at one end of the monomer 10 is a standard universal serial port Bus male connector. The second protocol interface 12 is still a 30-pin connector.

Please refer to shown in Fig. 6, it is the 3rd preferred embodiment of the present invention, differs from the 1st, the 2nd preferred embodiment in that: the first protocol interface 11 that one end of the monomer 10 is provided with is a through wire A standard universal serial bus male connector is connected, and the second protocol interface 12 is a miniature universal serial bus interface in the form of a male connector. The standard universal serial bus male connector can be directly connected to the universal serial bus interface on the computer, and the second protocol interface 12 can be plugged into the charging jack formed by the miniature universal serial bus interface on the mobile phone.

Please refer to shown in Fig. 7, be the 4th preferred embodiment of the present invention, the first protocol interface 11 that one end of described monomer 10 is established is a standard universal serial bus male connector, and the second protocol interface 12 is A miniature universal serial bus interface in the form of a male connector connected by wires. A standard universal serial bus male connector can be directly connected to the universal serial bus interface on the computer, and the second protocol interface 12 can also be plugged into the charging jack formed by the miniature universal serial bus interface on the mobile phone. The miniature universal serial bus interface of the second protocol interface 12 can be converted into a 30-pin connector through an adapter 40, so as to be connected with the smart phone iphone and the tablet computer ipad produced by Apple Computer, and charge it. The adapter 40 has a miniature universal serial bus interface 41 in the form of a female slot and a 30-pin connector 42, wherein the miniature universal serial bus interface 41 is connected with the aforementioned second protocol interface 12, and the 30-pin connection The device 42 is connected with a smart phone or a tablet computer.

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art, Within the scope of not departing from the technical solution of the present invention, when the technical content disclosed above can be used to make some changes or be modified into equivalent embodiments with equivalent changes, but all the content that does not depart from the technical solution of the present invention, according to the technical content of the present invention In essence, any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the technical solution of the present invention.

Claims (10)

1. a charging converter, it is characterized in that, comprise a monomer, be arranged with one first protocol interface, a second protocol interface and a switching switch on described monomer, further be provided with a switching circuit in described monomer, described diverter switch is connected with the diverter switch on monomer; Wherein:

Described the first protocol interface is a USB (universal serial bus), and it has a pair of power pin and a pair of data pin; Described second protocol interface has more than one pair of power pin and more than one pair of data pin, the power pin of the power pin of described second protocol interface and the first protocol interface is corresponding to be connected, and the data pin of second protocol interface is that the data pin by commutation circuit and the first protocol interface is connected;

Described commutation circuit is selected a synchronous mode or a fast mold filling formula by the diverter switch switching, under synchronous mode, the power pin of the first protocol interface, data pin are connected with power pin, the data pin of second protocol interface respectively, under fast mold filling formula, the first protocol interface only is connected with the power pin of second protocol interface with power pin.

2. charging converter according to claim 1, it is characterized in that, described commutation circuit comprises two bleeder circuits, wherein a bleeder circuit is to be composed in series by two divider resistances (R1, R2), its tandem node forms a dividing potential drop node, the another end of divider resistance (R1) connects the power pin of second protocol interface, the another end ground connection of another divider resistance (R2); Another bleeder circuit is also composed in series by two divider resistances (R3, R4), and its tandem node forms a dividing potential drop node, and the another end of divider resistance (R3) connects the power pin of second protocol interface, the another end ground connection of another divider resistance (R4);

Described diverter switch has two common joints and four make and break contacts (S1, S2, S3, S4), wherein a data pin of a common contact and second protocol interface is connected, and correspondence is two make and break contacts (S2, S4) wherein, another data pin of another common joint and second protocol interface is connected, and correspondence is two make and break contacts (S1, S3) wherein, two make and break contacts (S2, S1) are and corresponding connection of two data pins of the first protocol interface again, and another two make and break contacts (S3, S4) are connected with the dividing potential drop node of commutation circuit two bleeder circuits respectively.

3. charging converter according to claim 1, is characterized in that, described commutation circuit is to consist of microcontroller, and described microcontroller is connected with the data pin of first, second protocol interface respectively.

4. according to the described charging converter of any one in claims 1 to 3, it is characterized in that, described second protocol interface is the connector of 30 pin.

5. charging converter according to claim 4, is characterized in that, described the first protocol interface is the micro universal serial bus interface.

6. charging converter according to claim 5, is characterized in that, described micro universal serial bus interface is parent form slot form.

7. charging converter according to claim 5, is characterized in that, described micro universal serial bus interface is public type joint form.

8. charging converter according to claim 4, is characterized in that, the standard universal serial bus interface that described the first protocol interface is public type joint form.

9. according to the described charging converter of any one in claims 1 to 3, it is characterized in that, described second protocol interface is a micro universal serial bus interface.

10. charging converter according to claim 9, is characterized in that, the standard universal serial bus interface that described the first protocol interface is public type joint form.

Images