CN201112426Y - Standby battery with card reading function - Google Patents

Abstract

The utility model discloses a stand-by battery with read card function, including the shell of holding electricity core and circuit board, establish at the USB interface of shell one end, with the charging output plug of cell-phone power source interface looks adaptation, the USB interface passes through electric core and circuit board with the charging output plug and connects, the USB interface passes through data processor and connects at least one memory card cassette. The utility model has the advantages that: meanwhile, the multifunctional card reader has a standby battery function and a card reading function, and is convenient to carry; meanwhile, the protection circuit has multiple protection functions including overcharge, overcurrent, overdischarge, short circuit and the like.

Description

Backup battery with card reading function

technical field

The utility model relates to parts of mobile equipment, more specifically, relates to a spare battery with card reading function.

Background technique

On the one hand, mobile devices such as mobile phones, PDAs, MP3s, and digital cameras are highly dependent on power sources. On the other hand, these mobile devices need to exchange data frequently with computers. There are some spare batteries on the market, but not It has the function of card reading, and the card readers on the market do not have the function of backup battery. If you want to realize the function of card reading and backup battery at the same time, you must be equipped with a card reader and a backup battery at the same time, which is different from the mobile device. The pursuit of personalization and portability are contrary.

Utility model content

The purpose of the utility model is to overcome the above-mentioned defects in the prior art, and to provide a backup battery with a card-reading function which has both a backup battery and a card-reading function.

Another purpose of the utility model is to provide a spare battery with a card reading function that can be charged by a computer USB interface and has perfect circuit protection measures.

The technical scheme of the utility model is as follows: a spare battery with a card reading function, including a housing for accommodating the battery cell and a circuit board, a USB interface at one end of the housing, and a charging output plug compatible with the power interface of the mobile phone. The USB interface is connected to the charging output plug through the battery core and the circuit board, and the USB interface is connected to at least one memory card holder through the data processor.

There are two memory card slots, one of which is a Mini SD slot and the other is a T-Flash slot.

A step-down constant current circuit is provided between the USB interface and the battery core, and a boost constant current circuit is provided between the charging output plug and the battery core.

The step-down and constant-current circuit includes a constant-current and constant-voltage charging IC, resistors R3, R4, and R6, a two-color diode D1, and a triode Q1. One end of the constant-current and constant-voltage charging IC is connected to the USB interface, and the other end is connected to the two-color diode D1 through a resistor R3. One pin of the constant current and constant voltage charging IC is connected to the other pin of the two-color diode D1 through the resistor R4, the triode Q1, and the resistor R6 in sequence.

One end of the data processor is connected to the USB interface through a data cable, and the other end is connected to the memory card holder, and an indicator light is also connected to one port of the data processor.

The beneficial effects of the utility model are: it is convenient to carry because it has both the function of the backup battery and the function of reading the card; Protective function.

Description of drawings

Fig. 1 is the perspective view of the spare battery with card reading function of the utility model;

Fig. 2 is the exploded view of the backup battery with card reading function of the utility model;

Fig. 3 is the explosion diagram of the installation of the backup battery with the card reading function of the utility model and the plug that cooperates with the NOKIA socket;

Fig. 4 is the plug exploded view of the installation of the backup battery with the card reading function of the utility model that cooperates with the SONY socket;

Fig. 5 is the explosion diagram of the installation of the spare battery with card reading function of the utility model and the plug matched with the SAMSUNG socket;

Fig. 6 is an exploded diagram of the installation of the spare battery with the card reading function of the utility model and the plug matched with the FOMA socket;

Fig. 7 is the circuit block diagram of the backup battery with card reading function of the utility model;

Fig. 8 is the circuit principle diagram of the backup battery with card reading function of the utility model

Detailed ways

With reference to Fig. 1, Fig. 2, Fig. 3, a kind of backup battery with card reading function is provided, including casing 1, electric core 2, circuit board 3, USB interface 4, charging output plug 5 adapted to the power interface of mobile phone and The switch 9, the USB interface 4 and the charging output plug 5 are connected through the battery cell 2 and the circuit board 3, and the USB interface is connected with the Mini SD card holder 7 and the T-Flash card holder 8, and the Mini SD card holder 7 and the T-Flash card holder through the data processor M121. Mini SD card 15 and T-Flash card 16 can be installed respectively in the Flash card holder 8. The shell 1 includes an upper cover 6 , a lower cover 10 , a left side piece 11 , a right side piece 12 , an upper end cover 13 , and a lower end cover 14 .

As shown in FIG. 2 , the charging output plug 5 may be a plug compatible with a new SAMSUNG socket.

As shown in FIG. 3 , the charging output plug 5 can be a plug compatible with a NOKIA socket, one of which has a diameter of 3.5 mm, and the other has a diameter of 2.0 mm.

As shown in FIG. 4 , the charging output plug 5 may be a plug compatible with a SONY socket.

As shown in FIG. 5 , the charging output plug 5 may be a plug compatible with a SAMSUNG socket.

As shown in FIG. 6 , the charging output plug 5 can also be a plug compatible with a FOMA socket.

The charging output plug 5 can also be made into other shapes according to the needs of the mobile device interface to be adapted to it.

Referring to FIG. 7 , a step-down constant current circuit is provided between the USB interface 4 and the battery cell 2 , and a boost constant current circuit is provided between the charging output plug and the battery cell.

Referring to Fig. 7 and Fig. 8, the step-down constant current circuit includes a constant current constant voltage charging IC (IT4054), resistors R3, R4, R6, a two-color diode D1 and a triode Q1 (9014), one end of the constant current constant voltage charging IC is connected to The USB interface is connected, the other end is connected to one pin of the two-color diode D1 through the resistor R3, and the constant current and constant voltage charging IC is connected to the other pin of the two-color diode D1 through the resistor R4, the transistor Q1, and the resistor R6 in sequence.

The 5.0V power supply of the USB interface reduces the voltage to 4.2V±0.01V through the step-down constant current circuit, and charges the internal battery through the power management circuit after the constant current is 180mA.

When the spare battery is plugged into the USB port of the computer for charging, the constant current and constant voltage charging IC will automatically detect the charging current. When the charging current is greater than 40mA, it will be considered that the battery is not fully charged, and pin 1 of the IC will output a low level, and the inside of the two-color diode D1 will be red. The LED is on, the triode is not conducting due to no driving voltage, and the green LED is not on. When the charging current is less than 40mA, it is considered that the battery is fully charged, and the first pin of the IC turns to a high level, so that the red LED is not lit, the triode is turned on by the driving voltage, and the green LED is on.

Turn the switch 9 to the "ON" position, and the battery will be discharged through the power management circuit composed of IC S-8261 and MOSFET UPA1870. At this time, the boost circuit composed of S-8355M20 and AO3414 will work to output the 2.75 The voltage of V-4.27V is boosted to 5.5V±0.1V. When charging, the constant current circuit composed of LM358 and other components works, and the output current is kept constant at 650mA±50mA. It can charge all kinds of mobile phones that are completely dead or need to be charged. The charging output plug 5 can be a charging plug for adapting mobile phones such as NOKIA, Samsung, and Sony.

One end of the data processor M121 is connected to the USB interface through a data cable, and the other end is connected to the storage card holder, and an indicator light is connected to one port of the data processor.

When the product is plugged into the computer’s USB port for charging, the computer automatically detects the new hardware, and the green LED (diode D1) blinks several times and then turns to steady light, indicating that the computer has recognized the new hardware and can be used normally. When reading the files in the mini T-FLASH card or mini SD card normally, the green LED flashes several times and then turns to steady light. If the file is relatively large, the green LED will blink regularly, stop for a while and then blink again until all the files are read and turn to steady light. If you insert the mini T-FLASH card and mini SD card at the same time and then plug them into the computer USB port, the computer will automatically read the data in the mini T-FLASH card first. If you need to read the data in the mini SD card, you don’t need to unplug it from the computer. After downloading the product, just pop out the mini T-FLASH card, and the computer will automatically read the data in the mini SD card.

Claims (5)

1. reserve battery with card-reading function, comprise ccontaining electric core and circuit board shell, be located at shell one end USB interface, with the suitable charging output plug of cellular phone power supplies interface, described USB interface is connected with circuit board by electric core with the charging output plug, it is characterized in that described USB interface connects at least one by data processor and stores the card deck.

2. the reserve battery with card-reading function according to claim 1 is characterized in that, storing Ka Kazuokou is two, and one of them is a Mini SD deck, and another is the T-Flash deck.

3. the reserve battery with card-reading function according to claim 1 is characterized in that, is provided with the step-down constant-current circuit between described USB interface and electric core, is provided with the voltage increase and current constant circuit between described charging output plug and electric core.

4. the reserve battery with card-reading function according to claim 3, it is characterized in that, described step-down constant-current circuit comprises constant-current constant-voltage charging IC, resistance R 3, R4, R6, two-color diode D1 and triode Q1, constant-current constant-voltage charging IC one end is connected with USB interface, the other end is by the pin of resistance R 3 connection two-color diode D1, and constant-current constant-voltage charging IC passes through another pin of resistance R 4, triode Q1, resistance R 6 connection two-color diode D1 successively.

5. the reserve battery with card-reading function according to claim 1 is characterized in that, described data processor one end connects USB interface by data wire, and the other end connects storage card deck, also is connected with indicator light on the port of data processor.

Images