CN201039411Y - A mobile phone with self-adapted charging device - Google Patents

Abstract

The utility model discloses a mobile telephone with self-adapting charging equipment, which comprises a mobile telephone, a self-adapting charging device, a system interface, a charging management unit, a charging current setting unit, a USB interface unit, a main controller unit, a battery unit and a display unit. The self-adapting charging equipment fulfills different charging managements according to the inserted charger and USB data wire, supports the charging work of the mobile telephone, common chargers, chargers, being consistent to the International Standard, the YD/T1591-2006 and the USB data wire. The mobile telephone end is compatible to a plurality of charging modes, ensuring a charging cable to be connected with the USB data wire to form a whole. The utility model has the advantages of simple operation, low cost, cables saving, and can reduce the wasting rate of waste chargers and environmental pollution, etc.

Description

A mobile phone with an adaptive charging device

technical field

The utility model relates to a mobile phone supporting charger charging and USB interface charging, in particular to a mobile phone capable of automatically identifying charger charging and USB charging modes, and charging according to the corresponding charging mode.

Background technique

With the development of mobile communication, mobile communication is becoming more and more abundant, and the corresponding types of chargers are also increasing, and the chargers are not compatible, and the discarding of a large number of chargers has caused great waste of resources and environmental damage. In order to protect the environment and reduce waste of resources, the Ministry of Information Industry of China issued the communication industry standard "YD/T1591-2006 Mobile Communication Handset Charger and Interface Technical Requirements and Test Methods", which uniformly uses the USB interface as the standard interface of the charger , so that different types of mobile communication handsets can use a unified charger to reduce electronic waste, protect the environment and save resources. Using this standard charger, it is hoped that the USB data cable and the charging cable can be combined into one .

At present, mobile phones with a rated charging current below 500mA have realized USB charging and charger charging. There are two ways to realize it. The first is to directly connect the USB power cord and the charging power cord together without distinguishing them. , this is because the maximum current provided by the standard USB interface can reach 500mA, the connection of the two charging methods will not damage the mobile phone and the USB power supply device; the second is that the connection of USB charging and charger charging is separated, this way It can satisfy the recognition of two charging modes, but two kinds of connection cables are required, a special charging cable and a USB data cable.

With the increasingly rich functions of mobile phones, the battery capacity continues to increase, and the charging current needs to be increased. Many mobile phone designs set the rated charging current above 500mA. At this time, if the first solution is used to combine USB charging and AC Combining charging into one will bring the risk of burning out the USB interface of the PC. If the second solution is adopted, the USB cable and the data cable still need to be separated.

Contents of the invention

Aiming at the deficiencies in the prior art, the purpose of this utility model is to solve the above problems, combine the advantages of the above two methods, and eliminate their shortcomings, and use a simple charging module and a small number of peripheral accessory circuits to realize charger charging and USB charging Multiplexing, so that the mobile phone can automatically identify the type of equipment to be charged, and automatically realize the selection of the charging mode to achieve safe charging.

The utility model can realize the function of automatically identifying the charging mode, and charging according to the corresponding charging mode. The utility model has a simple circuit and is safe to use. By adopting the scheme, the mobile phone can fully meet the requirements for the mobile phone terminal in "YD/T1591-2006 Mobile Communication Handset Charger and Interface Technical Requirements and Test Methods", and can make the mobile phone The phone is compatible with non-standard chargers, chargers and USB data lines required by "YD/T1591-2006", so that mobile phones can be charged with standard chargers and USB data lines conveniently and safely.

The purpose of the invention of the present invention is achieved through the following technical solutions:

A mobile phone with an adaptive charging device: including a mobile phone, an adaptive charging device, and a system interface, and the adaptive charging device includes: a charging management unit, a rated current setting unit, a USB interface unit, and a main controller Unit, battery unit, display unit, the charging management unit described above is connected to the charging device and the battery unit to realize the management of the battery charging process; the rated current setting unit is used to set the charging rated current value; the USB interface unit is connected to the USB The USB bus of the master device, the VBUS of the USB bus and the current input terminal of the charging management module are connected together to ensure that the USB can also provide charging power for the mobile phone, and the USB interface module is connected to the main controller.

In the self-adaptive charging device, the main control unit is responsible for the detection and selection of the charging mode; after setting the charging mode, the specific charging process is completed by the charging management unit;

In the self-adaptive charging device, the value of the rated charging current controlled by the charging management unit is controlled by the rated current setting unit, and the maximum charging current that occurs during the charging process is not higher than the rated current;

In the self-adaptive charging device, the main controller realizes the control of the rated charging current by controlling the circuit connection mode of the rated current setting unit;

In the described self-applicable charging device, the USB interface module at the mobile phone end is set to DEVICE mode by default, in order to obtain current from other USB master devices;

The automatic charging mode recognition device, wherein, initially, the rated current setting unit setting module limits the charging current below 500mA, and the specific rated current is determined by the default circuit parameters;

The self-adaptive charging device, wherein, when a charger conforming to the Chinese national standard "YD/T1591-2006" is inserted, since the two signals "D+" and "D-" in the charger are connected together, the main control unit recognizes If the charging device is a national standard charger, a control signal is sent to change the circuit connection mode of the rated current setting unit, change the rated current to the maximum charging current supported by the mobile phone, such as 800mA, and display the charging mode and Charging state, at this time the actual maximum charging current is the smallest of the two parameters, the rated value provided by the charger and the rated value of the mobile phone;

The adaptive charging device, wherein, when the mobile phone is connected to the USB host device (such as a PC) through the USB cable, the main controller detects that the USB is connected, and the main controller does not operate the rated current setting unit, that is Charge according to the default rated charging current (not greater than 500mA), and display the USB charging status on the display module;

The adaptive charging device described above, wherein, when an ordinary charger is inserted, the main control unit detects the USB interface unit and judges that it is not a charger of the national standard "YD/T1591-2006" or a USB device, and then changes the rated current to the mobile charger. The maximum charging current supported by the phone (greater than 500mA), and display the charging type and status on the display module. At this time, the actual maximum charging current is the smallest of the two parameters that the charger can provide and the rated value of the mobile phone. one of.

The mobile phone described above can realize the function of the above-mentioned adaptive charging device, can detect the type of charging equipment, control the rated current setting module, and charge according to the corresponding rated current, so as to realize the purpose of adaptive charging.

The utility model has the following beneficial effects: the utility model is simple to implement and low in cost; the utility model mobile phone supports ordinary chargers, chargers and USB cables that meet the national standard "YD/T1591-2006"; the utility model Cables are saved, and the mobile phone terminal is compatible with multiple charging modes, so that the charging cable and the USB cable can be integrated into one, which helps to reduce costs, waste of discarded chargers and environmental pollution.

Description of drawings

Fig. 1 is the schematic diagram of mobile phone of the present utility model;

Fig. 2 is a schematic diagram of an adaptive charging device of the present invention;

Fig. 3 is a schematic diagram of the rated current setting module in the embodiment of Fig. 1;

Figure 4 is a schematic diagram of a charger conforming to "YD/T1591-2006";

Figure 5 is a common AC-DC charger.

Explanation of symbols in the figure

11—Charging management unit 12—Rated current setting unit 13—Battery unit

14—Main control unit 15—USB interface unit 16—Display unit

17—Charger 18—Resistor 19—Transistor

20—Mobile phone 50—Adaptive charging unit 51—System interface

Detailed ways

How to realize the utility model below in conjunction with accompanying drawing and embodiment:

Fig. 1 shows the schematic diagram that contains adaptive charging device 50 mobile phone 20 and system interface 51, and described 51 is the system interface module that comprises USB interface and charging interface.

Fig. 2 shows the schematic diagram of the adaptive charging device of the present utility model, and the adaptive charging device 50 comprises a charging management unit 11, a rated current setting unit 12, a battery unit 13, a main controller unit 14, a USB interface unit 15 and a display Unit 16. The main controller unit 14 can identify the charging type and charging state by detecting the USB interface unit 15 and the charging management unit 11. The rated current setting unit 12 is connected with the charging management unit, and different circuits in the rated current setting unit 12 are connected way, corresponding to different rated currents. The main controller unit 14 realizes the function of setting different rated currents by controlling the rated current setting unit and changing its circuit connection mode. The main controller unit 14 displays the charging mode and charging status on the display unit 16 . The power bus VBUS of the USB interface unit 15 is connected to the charging line CHARGE, so that the USB interface or the charger can be connected to the CHARGE line for charging.

Fig. 3 shows an embodiment of the rated current setting unit 12 of an embodiment, and the charging management unit has a corresponding hardware circuit to set its rated current, Fig. 3 is an embodiment of the rated current setting unit, in In this embodiment, different rated current values are corresponded to by setting different resistance values. The parameters of the two resistors 18R1 and R2 are determined according to the design. The triode 19 or MOS tube acts as a control switch. When Q1 is not turned on, the effective resistance in this circuit is the value of R1; when Q1 is turned on, the effective resistance value of this circuit is The value of R1 and R2 connected in parallel can realize two kinds of rated current according to the difference of the two values. Of course, adding a parallel resistor and control device can realize more kinds of rated current. In this embodiment, the rated charging current of the USB is set to 500mA, and the rated charging current of the charger is set to 800mA. Initially, the transistor 19 or the MOS tube is not conducting, and the rated current set by the hardware circuit of this embodiment is 500mA.

Figure 4 shows a schematic diagram of a charger with a USB interface conforming to the "YD/T1591-2006" standard, where the "D-" and "D+" signals are connected. When the described charger shown in Fig. 4 is inserted, since D- and D+ are connected together, the main controller unit recognizes this type of charger and sends a signal to make 19 (Q1) in the rated current setting unit 12 conduct Connect the resistors 18R1 and R2 in parallel. At this time, the hardware sets the rated current supported by the charging management unit to 800mA. Then set the rated current of 800mA from the applicable charging device. If the rated charging current of the charger is 800mA or greater than 800mA, the self-adaptive charging device charges the battery 13 according to the rated charging current of 800mA; if the rated charging current of the charger is less than 800mA, the charger can provide current X, the adaptive charging device charges according to the rated current of X.

FIG. 5 shows a schematic diagram of a common AC-DC charger. When the charger 17 shown in FIG. The same control method of the device 17 is used to set the rated current.

When a USB data cable is inserted, the self-adaptive charging device recognizes the USB data cable through the USB interface unit, and charges according to a rated current of 500mA.

When the charger is removed and the USB data line is removed, (Q1) in the rated current setting unit 12 returns to the initial state, that is, non-conductive, and the rated charging current set by the hardware is 500mA.

The above embodiments describe an adaptive charging device, which becomes a mobile phone adaptively supporting multiple charging modes when this device is implanted in a common mobile phone. The mobile phone implants the device on the circuit board of the fuselage to realize the adaptive charging function. The mobile phone includes a mobile phone body and an adaptive charging device disposed therein. The principle and structure of the adaptive charging device have been disclosed in the above-mentioned embodiments, and will not be repeated here.

The effect of the utility model is illustrated below from the angle of user use:

Suppose the maximum current set by the mobile phone is 800mA, and the maximum current during USB charging is 500mA.

(1) Initially, when any charger or USB cable is plugged in, the charging current is limited to less than 500mA.

(2) When the standard charger shown in Figure 4 is inserted, the adaptive charging device detects the charger and sets the rated charging current of the mobile phone to 800mA. If the charger can provide a rated current of 600mA, which is less than the rated current of the mobile phone, the mobile phone should be charged with a rated current of 600mA; rated current, then the mobile phone is charged with a rated current of 800mA.

(3) When the normal charger shown in Fig. 5 is inserted, the adaptive device detects the charger, and charges in the same way as (2).

(4) When the USB cable is inserted and the adaptive device detects the USB data, the initial rated current, that is, 500mA, is not changed, and the charging is continued at the rated current of 500mA.

(5) When the charger is removed or the USB data cable is removed, the rated current setting unit returns to the initial 500mA rated current state, waiting for the next charge.

The above-mentioned embodiments are provided for those of ordinary skill in the art to realize or use the utility model, and those of ordinary skill in the art can make various modifications or changes to the above-mentioned embodiments without departing from the inventive concept of the present utility model, Therefore, the protection scope of the present utility model is not limited by the above-mentioned embodiments, but should be the maximum range that meets the innovative features mentioned in the claims.

Claims (6)

1. A mobile phone with an adaptive charging device, comprising a mobile phone, an adaptive charging device, a system interface, a charging management unit, a rated current setting unit, a USB interface unit, a main controller unit, a battery unit and a display unit, etc., characterized in that: the charging management unit is connected to the charging device and the battery unit to realize the management of the charging process of the battery. 2. A mobile phone with an adaptive charging device, characterized in that: the rated current setting unit is connected to the charging management unit for setting the charging rated current value. 3. A mobile phone with an adaptive charging device, characterized in that: the USB interface unit is connected to the USB bus of the USB master device, and the VBUS of the USB bus is connected with the current input terminal of the charging management module , the charging power is provided to the mobile phone by the USB, and the USB interface module is connected to the main controller. 4. A mobile phone with an adaptive charging device, characterized in that: the main controller is connected to the circuit of the rated current setting unit to realize the control of the rated charging current. 5. A mobile phone with an adaptive charging device, characterized in that: the two signals "D+" and "D-" in the charger are connected together, and the main control unit identifies the charging device. 6. A mobile phone with an adaptive charging device, characterized in that: when the mobile phone is connected to a USB host device through a USB cable, the main controller detects the USB connection and displays the USB on the display module. charging.

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