A kind of mobile phone that has the self adaptation charging device
Technical field
The utility model relates to a kind of mobile phone of supporting charger charging and USB interface charging, and relate in particular to a kind of charger of discerning automatically and charge and the USB charge mode, and the mobile phone that charges according to the charge mode of correspondence.
Background technology
Along with the development of mobile communication, mobile communication is more and more abundanter, and corresponding charger kind veriety is also increasing, and between the charger can not be compatible, a large amount of chargers discarded caused the very big wasting of resources and environmental disruption.In order to protect environment to reduce the wasting of resources; China's Ministry of Information Industry has put into effect the communication industry standard of " YD/T1591-2006 mobile phone charger and interfacing require and method of testing "; the unified standard interface that adopts USB interface as charger of this standard; make the mobile phone of different model can use the charger of unified specification; to reduce electron wastes; protect environment and economize on resources; use the charger of this standard, be hopeful to make usb data line and charge cable to unite two into one.
The mobile phone of present specified charging current below 500mA, USB charging and charger charging have been realized, implementation has two kinds, first kind is directly the power line of USB power line and charging directly to be connected together not distinguished, this is that two kinds of charging modes are connected together and can not damage mobile phone and USB power supply unit because the maximum current that standard USB interface provides can reach 500mA; Second kind is that the USB charging separated with being connected of charger charging, and this mode can satisfy the identification of two kinds of charge modes, but needs two kinds of connecting lines, special charging line and usb data line.
Along with present cell-phone function becomes increasingly abundant, it is big that battery capacity continues to become, the charging current size is also needed to increase, in a lot of mobile phone designs specified charging current is provided with more than the 500mA, at this moment, integrate then can bring the risk that burns out the PC USB interface if adopt first kind of scheme that USB charging and AC are charged, if adopt second kind of scheme then still need the USB line to separate with data wire.
Summary of the invention
Deficiency at the prior art existence, the purpose of this utility model is to address the above problem, combine the advantage of above-mentioned dual mode, and eliminated its shortcoming, utilize simple charging module and a small amount of peripheral accessory circuit, realize the multiplexing of charger charging and USB charging, make the device type of the automatic identification of mobile phone function to its charging, and realize automatically the selection of charge mode realizing safe charging.
The function that the utility model can be realized is to discern charge mode automatically, and charges according to the charging modes of correspondence.The utility model circuit is simple, safe in utilization, adopt this scheme, can make mobile phone meet " YD/T1591-2006 mobile phone charger and interfacing require and method of testing " requirement fully to the mobile phone end, can make the compatible non-standard charger of mobile phone, charger that " YD/T1591-2006 " requires and the charging of usb data line make mobile phone and convenient and safe use standard charging device and usb data line charge to mobile phone.
Goal of the invention of the present invention is achieved by the following technical solution:
A kind of mobile phone that has the self adaptation charging device: comprise mobile phone, suitable certainly charging device, system interface, described certainly suitable charging device comprises: Charge Management unit, rated current are provided with unit, usb interface unit, Main Control Unit, battery unit, display unit, described Charge Management unit, connect charging device and battery unit, realize management battery charging process; Rated current is provided with the unit, is used for being provided with the charging load current value; Usb interface unit is connected to the usb bus of USB main equipment, and the VBUS of usb bus and the current input terminal of charge management module connect together, and to guarantee that USB also can provide charge power supply to mobile phone, usb interface module is connected on the master controller.
In the described self application charging device, main control unit is responsible for the detection and the selection of charge mode; After setting charge mode, concrete charging process is finished by the Charge Management unit;
In the described self application charging device, the numerical value of the specified charging current of Charge Management unit controls is provided with the unit by rated current and controls, and the maximum charging current that charging process occurs is not higher than rated current;
In the described self application charging device, master controller is realized the control to specified charging current size by controlling the circuit connecting mode that rated current is provided with the unit;
In the described self application charging device, the default DEVICE pattern that is changed to of mobile phone end usb interface module is in order to obtain electric current from other USB main equipments;
Described automatic charge mode recognition device, wherein, under initial situation, rated current is provided with the unit and the limit module charging current is set below 500mA, and concrete rated current size is decided by this default circuit parameter;
Described self adaptation charging device, wherein, when insertion meets the charger of Chinese national standard " YD/T1591-2006 " standard, because " D+ " and " D-" two signals link together in the charger, it is the GB charger that main control unit is discerned this charging device, then send control signal, change the circuit connecting mode that rated current is provided with the unit, the maximum charging current that the change rated current is supported for this mobile phone, 800mA for example, and on display module, show this charge mode and charged state, in the rated value that actual charging this moment maximum current size can provide for this charger and rated value two parameters of mobile phone one of minimum;
Described self adaptation charging device, wherein, when mobile phone is connected to the USB main equipment by the USB line (for example PC), master controller detects USB and connects, master controller is not provided with the unit to rated current and operates, promptly charge, and on display module, show the USB charged state according to default specified charging current (being not more than 500mA);
Described self adaptation charging device, wherein, when inserting common charger, main control unit detects usb interface unit, judge it is not National Standard YD/T1591-2006 " charger, neither USB device, then change the maximum charging current (greater than 500mA) that rated current is supported for this mobile phone, and on display module, show charging type and state, in the rated value that actual charging this moment maximum current size can provide for this charger and rated value two parameters of mobile phone one of minimum.
Described mobile phone wherein, can be realized the function of above-mentioned self adaptation charging device, can detect the type of charging device, and the control rated current is provided with module, charges according to the rated current of correspondence, realizes the purpose of self adaptation charging.
The utility model has following beneficial effect: this utility model realizes simple, and is with low cost; The utility model mobile phone, support common charger, meet National Standard YD/T1591-2006 " charger and the charging of USB line; The utility model has been saved cable, and the compatible multiple charge mode of mobile phone end can make charge cable and USB line integrate, and helps to reduce cost, and reduces the waste and the environmental pollution of discarded charger.
Description of drawings
Fig. 1 is the schematic diagram of mobile phone of the present utility model;
Fig. 2 is the schematic diagram of self adaptation charging device of the present utility model;
Fig. 3 is the schematic diagram that rated current is provided with module among Fig. 1 embodiment;
Fig. 4 is the charger schematic diagram that meets " YD/T1591-2006 ";
Fig. 5 is common AC-DC charger.
The number in the figure explanation
11-Charge Management unit, 12-rated current is provided with unit 13-battery unit
14-main control unit, 15-usb interface unit, 16-display unit
17-charger, 18-resistance, 19-triode
20-mobile phone, 50-self adaptation charhing unit, 51-system interface
Embodiment
Below in conjunction with drawings and Examples how the utility model is realized:
Fig. 1 shows the schematic diagram that contains self adaptation charging device 50 mobile phones 20 and system interface 51, and described 51 for comprising the system interface module of USB interface and charging inlet.
Fig. 2 shows the schematic diagram of self adaptation charging device of the present utility model, and self adaptation charging device 50 comprises that Charge Management unit 11, rated current are provided with unit 12, battery unit 13, Main Control Unit 14, usb interface unit 15 and display unit 16.Described Main Control Unit 14 is by detecting usb interface unit 15 and Charge Management unit 11, can identify charging type and charged state, rated current is provided with unit 12 and links to each other with the Charge Management unit, rated current is provided with circuit connecting modes different in the unit 12, corresponding different rated current sizes.Main Control Unit 14 changes its circuit connecting mode by rated current being provided with the control of unit, realizes setting the function of different rated current sizes.Main Control Unit 14 is presented at charge mode and charged state on the display unit 16.The power bus VBUS and the charging circuit CHARGE of usb interface unit 15 link together, and like this, USB interface is inserted or charger inserts, and can both receive on the CHARGE circuit and charge.
The rated current that Fig. 3 shows an embodiment is provided with an embodiment of unit 12, described Charge Management unit all has the corresponding hardware circuit that its rated current is set, Fig. 3 is the embodiment that rated current is provided with the unit, in this embodiment, by being set, different resistance values comes corresponding different load current values.Two resistance 18R1, R2 parameters determine that according to design triode 19 or metal-oxide-semiconductor play the control on-off action, and when not conducting of Q1, effective resistance is the value of R1 in this circuit; When the Q1 conducting, this circuit effective resistance value is the value after R1 and the R2 parallel connection, according to the difference of two values, can realize two kinds of rated current sizes, certainly, increases a parallel resistance and control device again, can realize a greater variety of load current values.In the present embodiment, setting USB charging current rated current is 500mA, and charger charging rated current is 800mA.Under the initial situation, described triode 19 or not conducting of metal-oxide-semiconductor, the rated current of present embodiment hardware circuit setting is 500mA.
Fig. 4 shows the schematic diagram of the charger of the USB interface that meets " YD/T1591-2006 " standard, and wherein " D-" is connected with " D+ " signal.Described when inserting charger shown in Figure 4, because D-and D+ link together, Main Control Unit identifies the type charger, send signal, make rated current that 19 in the unit 12 (Q1) conducting is set, make resistance 18R1 and R2 parallel connection, this moment, the rated current of hardware setting Charge Management unit support was 800mA.Then the self application charging device is provided with the rated current of 800mA.If the specified charging current of this charger is 800mA or during greater than 800mA, the self application charging device all comes battery 13 is charged according to the specified charging current of 800mA; If the specified charging current of this charger is less than 800mA, then charger can provide electric current X, and the self adaptation charging device just charges according to the rated current of X.
Fig. 5 shows the schematic diagram of common AC-DC charger, described when insert the people be charger 17 shown in Figure 5 the time, self adaptation charging device 50 identifies this pattern, according to setting rated current with the identical control method of above-mentioned charger 17 shown in Figure 4.
When insert be the usb data line time, the self application charging device identifies the usb data line by usb interface unit, then charges according to the rated current of 500mA.
When charger removes when removing with the usb data line, (Q1) that rated current is provided with in the unit 12 returns to initial condition, i.e. not conducting, and the specified charging current of hardware setting is 500mA.
Above embodiment has described a kind of self adaptation charging device, and this device is implanted in the common mobile phone just becomes the mobile phone that a kind of self adaptation is supported multiple charge mode.Mobile phone is implanted this device to realize the self adaptation charge function on the circuit board of fuselage.Mobile phone comprises mobile phone fuselage and the self adaptation charging device that is provided with wherein, and wherein principle in the self adaptation charging device and structure disclose in the above embodiments, do not repeat them here.
The angle of using from the user illustrates effect of the present utility model below:
Suppose that the maximum current that mobile phone is set is 800mA, maximum current is 500mA during the USB charging.
(1) under the initial situation, insert any charger or USB line, charging current all is limited in below the 500mA.
(2) when inserting standard charging device shown in Figure 4, the self adaptation charging device detects this charger, and the specified charging current of setting mobile phone is 800mA.If the rated current that this charger can provide is 600mA, promptly less than the rated current of mobile phone, then the mobile phone rated current that changes 600mA into is charged; If the rated current that this charger can provide is 1800mA, promptly greater than the mobile phone rated current, then the mobile phone rated current that changes 800mA into is charged.
(3) when inserting common charger shown in Figure 5, self-reacting device detects this charger, then charges according to the method identical with (2).
(4) when inserting the USB line, self-reacting device detects usb data, does not then change the initial nominal electric current, and promptly 500mA continues to charge with the rated current of 500mA.
(5) remove or usb data line when removing when charger, rated current is provided with the unit and returns to initial 500mA rated current state again, waits for charging next time.
The foregoing description provides to those of ordinary skills and realizes or use of the present utility model; those of ordinary skills can be under the situation that does not break away from invention thought of the present utility model; the foregoing description is made various modifications or variation; thereby protection range of the present utility model do not limit by the foregoing description, and should be the maximum magnitude that meets the inventive features that claims mention.