Utility model content
The utility model is for existing deficiency, and the card form portable power source of a kind of band card-reading function (SD card) is provided, and this Power Management Design is reasonable, simple and practical.
The card form portable power source of a kind of band card-reading function (SD card), comprise lower casing, PCB control board, function button, led status indicator lamp, card reader draw-in groove and power supply body, it is characterized in that: described power supply body is lithium polymer battery, described power supply body and described PCB control board, card reader draw-in groove is fixed and is packaged in described shell, described PCB control board is connected with described card reader draw-in groove and is built-inly connected with two line ends, wherein a line end is the internal charging input end that is provided with USB joint, this line is also the USB plug of card reader, another line end is supplying power for outside output.
The plug of the supplying power for outside output port of further described another line end can be the applicable 8pin plug of Micro-B plug or iPhone5.
Further described card reader draw-in groove can be supported the hot plug of SD card, has card-reading function.
Further described lower casing offers two place's grooves, and two plugs of described line end are concealed in respectively in groove.
The card form portable power source of further described a kind of band card-reading function (SD card) is designed with function button, led status indicator lamp, the electric weight of led status indicator lamp display power supply.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is fundamental diagram of the present utility model.
Fig. 3 is charging circuit schematic diagram of the present utility model.
Fig. 4 is the output circuit schematic diagram that boosts of the present utility model, wherein Fig. 4-1st, booster circuit schematic diagram of the present utility model, Fig. 4-2nd, voltage follower circuit schematic diagram of the present utility model.
Fig. 5 is master control IC of the present utility model and electric quantity display circuit schematic diagram, wherein Fig. 5-1st, master control IC circuit theory diagrams of the present utility model, Fig. 5-2nd, electric quantity display circuit schematic diagram of the present utility model.
Fig. 6 is SD card read/write circuit schematic diagram of the present utility model, wherein Fig. 6-1st, Card Reader chip circuit schematic diagram of the present utility model, Fig. 6-2nd, draw-in groove of the present utility model, crystal oscillating circuit schematic diagram, Fig. 6-3rd, USB socket circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail: as shown in Figure 1, the card form portable power source of a kind of band card-reading function (SD card), by lower casing 1, upper casing 10, PCB control board 4, led status indicator lamp 5, USB joint 3, the plug 2 of another line end, card reader draw-in groove 8 and power supply body 9 form, it is characterized in that: described power supply body 9 is lithium polymer battery, on described PCB control board 4, be provided with led status indicator lamp 5, described card form portable power source is built-in is connected with two line ends, wherein a line end is internal charging input end, be provided with USB joint 3, another line end is supplying power for outside output, be provided with plug 2.
Further described lower casing 1 is offered two place's grooves above, and described two plugs 2,3 are concealed in respectively in two place's grooves.
Further described card reader draw-in groove 8 is supported the hot plug of SD card 7, has card-reading function.
Further described led status indicator lamp 5, function button 6 are distributed in respectively on PCB control board 4, the electric weight of led status indicator lamp 5 display power supplies when open function button 6.
Further described power supply body 9 and described PCB control board 4, card reader draw-in groove 8 are fixed and are packaged in lower casing 1.
As shown in Figure 2, the operation principle of this portable power source is in the time only accessing charger, is charged in this portable power source inside, without functions of card reader.When access is when computer USB interface, this portable power source both can charging and discharging, can carry out again SD card exchanges data on computers.
As shown in Figure 3, in the time only inserting charger (without card-reading function), when power supply master control IC MCD4054 has detected the access of external charge circuit, in charging circuit, C6 is power filter, R15, R16, C10 inserts the voltage of charger as detection, when higher than 5.5V or lower than 4.5V, and this charger, can not, to the charging of this portable power source, carry out over-charge protective; 1 pin of power supply master control IC MCD4054 is for being full of control pin, and in the time that power supply master control IC MCD4054 the 3rd pin voltage is 4.2V, 1 pin of power supply master control IC MCD4054 is that high level stops charging.
As shown in Fig. 4-1 and Fig. 4-2, this portable power source is that external discharge process is digital equipment charging (without card-reading function), in the time pressing K1 button, first cell voltage boosts, L1 and D5, IC FP6291 forms booster circuit, 4 pin of FP6291 become high level and start external charging, R2 in figure, R3 is the output voltage circuit of adjusting after boosting, C9, C4, C3 is the filter circuit after boosting, the voltage that ensures output is steady, C7, R12Q2, R1 composition start testing circuit, Q1, R1, R10, the circuit of C2 and the charging of master control 8PC71A composition control, when K1 presses, Q1 conducting, externally electric discharge, digital equipment starts charging, in the time being full of, 4 pin of FP6291 become low level, stop charging.R6, R7, R8, R9 composition divider resistance circuit has this circuit to charge to it in the time meeting iPhone5.
As shown in Figure 5, for master control IC and control electric weight circuit (without card-reading function), as shown in Fig. 5-1, master control IC8PC71A the first pin pin powered battery is carried out work, the second pin is charging control pin, the 3rd pin is charging voltage control pin, the 6th pin is start detection pin, the 7th pin is for controlling externally charging pin (discharging to digital equipment charge function pin), the 8th pin is for opening charge mode pin, the 9th, ten, 11, 13, LED lamp control pin, the 12 pin is for calculating external discharge switch time this pin of pin.As shown in Fig. 5-2, electric quantity display circuit is by R19D1, R18, and D2, R17, D3, R14, D4 composition, while discharging and recharging, can pass through the electric weight of four led status indicator lamp display power supplies.
As Fig. 6-1, shown in Fig. 6-2 and Fig. 6-3, this portable power source is inserted to computer USB interface, FNK2021A controls IC and SD card control mode is SD pattern, clock line is CLK, order data line is CMD, data wire is D1-D4, inserting detection signal pin is INST, write-protect pin is WP, in the time not allowing to SD card data writing, WP pin can be high level, before SD card initialization, IC FNK2021A/SD first can block detecting to SD card, in the time that INST pin generation level changes, there is SD card to insert, then the card inserting is carried out to initial configuration, by reading the content of CSD register.D1-D4 is the data wire transmitting, whether correctly transmit data wait acknowledge, after configuration completes, confirmation has SD card to insert, IC FNK2021A/SD is by the D+ of pin, D-meeting uploading data, in the time that definite valid data are inquired by host computer, master control FNK2021A/SD can start built-in USB function carries out the communication function of host computer (computer), can find SD card, and can normally show at host computer (computer), ensuing operation is exactly to have carried out exchanges data, and this circuit is made up of the SD card of USB interface master control ICFNK2021A/SD and insertion.
The foregoing is only preferred embodiment of the present utility model, be not intended to limit protection range of the present utility model.