CN201039140Y - Mobile phone external battery case - Google Patents

Abstract

The utility model discloses an external battery box for a mobile phone, which includes a box body, a conductive sheet is arranged on the inner wall of the box, and a plug connected with the mobile phone, one end of the plug is connected with the conductive sheet through a wire, The other end is used to connect with the mobile phone charger interface. The plug is provided with electrodes, and the electrodes are used to connect with the interface of the mobile phone charger; the plug is used in conjunction with the interface of the mobile phone charger; the box body is provided with an upper cover; the outer wall of the box body is provided with clips . The utility model is an expansion of the battery of the mobile phone body, has flexible use and low cost, and can be used as one of the standard configurations of the mobile phone.

Description

Mobile phone external battery case

technical field

The utility model relates to a portable external power supply, in particular to an external battery box for a mobile phone.

Background technique

More and more mobile phones have MP3, MP4, games, and mobile TV functions. These functions require the mobile phone to have a continuous power supply. The battery of the mobile phone itself is suddenly insufficient. Even if it is equipped with a spare battery board, it cannot satisfy some music fans. , The needs of game fans. The current rechargeable AA battery can have a single cell capacity of 2400mAh. Such batteries are very popular and inexpensive. Equipped with a corresponding fast charger, the battery can be fully charged in half an hour to an hour, which is very convenient to use.

However, in the prior art, there is no portable power supply connected to the mobile phone.

Utility model content

The technical problem solved by the utility model is to provide an external battery box for a mobile phone, which can conveniently supply power to the mobile phone.

The technical solution is as follows:

The mobile phone external battery box includes a box body, the inner wall of the box is provided with a conductive sheet, and also includes a plug, one end of the plug is connected to the conductive sheet through a wire, and the other end is used to connect with the interface of the mobile phone charger.

Preferably, the plug is provided with electrodes, and the electrodes are used to connect with the interface of the mobile phone charger.

Preferably, the plug is used in conjunction with a mobile phone charger interface.

Preferably, the box body is provided with an upper cover.

Preferably, clips are provided on the outer wall of the box.

The external battery box of the mobile phone is an expansion of the battery of the mobile phone body, has flexible use and low cost, and can be used as one of the standard configurations of the mobile phone to supply power to the mobile phone.

Description of drawings

Fig. 1 is the front view of box body in the utility model;

Fig. 2 is the A-A sectional view of box body in the utility model;

Fig. 3 is a schematic diagram of the internal structure of the box body in the utility model;

Fig. 4 is a schematic diagram of the end structure of the plug in the utility model.

Detailed ways

Below with reference to accompanying drawing, preferred embodiment of the present utility model is described in detail.

Referring to Fig. 1, the box body 1 of the mobile phone external battery box has a regular hexahedron structure as a whole. For the convenience of carrying, a clip 2 is provided on the side wall of the box body 1, and the clip 2 is elastic. The mobile phone external battery box can be hung on the belt through the clip 2 (like the previous Walkman), so that it can be carried around.

Referring to FIG. 2 , conductive sheets 4 and springs 3 are provided on the upper and lower surfaces of the case body 1 , and the batteries put into the case body 1 can be connected in series through the conductive sheets 4 and springs 3 .

The material of the box body 1 is made of plastic material. Three AA rechargeable batteries can be loaded inside the box body 1. When the three AA rechargeable batteries are connected in series, the rated voltage is exactly 3.6v. In this way, it can match the rated voltage of the mobile phone battery The voltage is the same.

Referring to Figure 3, the conductive sheet 4 is used to contact the positive pole of the battery, and the spring 3 is used to contact the negative pole of the battery. When three batteries are put into the box body 1, the three batteries are connected in series. The conductive sheet 4 and the spring 3 are connected to the plug 6 through the wire 5, the positive and negative poles of the plug 6 correspond to the conductive sheet 4 and the spring 3 respectively, and the plug 6 can be connected to the jack of the mobile phone charger interface.

One side of the box body 1 is provided with a cover 7, which is used to fix the batteries put in.

As shown in FIG. 4 , the plug 6 is used in conjunction with the mobile phone charger interface. The plug 6 is provided with a cavity with one side opening, and a pair of electrodes 8 are arranged in the cavity, which are respectively a positive pole and a negative pole.

Usually, the mobile phone charger interface is provided with at least two pairs of electrodes. For the convenience of description, they are called A pair of electrodes and B pair of electrodes. When the mobile phone charger interface is connected to the charger, the A pair of electrodes and the charger’s The electrodes are connected; when the mobile phone charger interface is connected to the external battery box of the mobile phone through the plug 6, its B pair of electrodes is connected to the electrode 8 of the plug 6.

The use of the external battery box requires the cooperation of the mobile phone, that is, the mobile phone needs to be designed to support the use of the external battery box in terms of software and hardware. When the plug 6 of the external battery box is connected to the mobile phone charger interface, the mobile phone uses the external battery first. The electric energy of the box, the method can be as follows:

When the external battery box is connected to the mobile phone charger interface, the mobile phone first judges the output voltage of the electrode 8 of the external battery box. If the output voltage is within the rated range of the mobile phone, the mobile phone switches the power supply mode to the external battery box. Otherwise, keep The main body is powered by batteries, and the current power supply mode will be prompted on the display.

In the battery box power supply mode, the mobile phone continuously detects the output voltage of the external battery box. If the output voltage is lower than a certain set value, the mobile phone switches the power supply mode to the main battery power supply. If the main battery cannot meet the power supply requirements, the mobile phone automatically shutdown.

In the power supply mode of the battery box, the mobile phone continuously detects the output voltage of the battery box. If the plug 6 of the external battery box is pulled out, the mobile phone detects that the voltage value of the electrode 8 is 0, and the power supply mode of the mobile phone is switched to the main battery. If the power supply requirements cannot be met, the mobile phone will automatically shut down.

Claims (5)

1. A mobile phone external battery box, comprising a box body, the inner wall of the box is provided with a conductive sheet, it is characterized in that it also includes a plug, one end of the plug is connected with the conductive sheet by a wire, and the other end is used for Connect with the mobile phone charger interface. 2. The mobile phone external battery box according to claim 1, wherein the plug is provided with electrodes, and the electrodes are used to connect with the interface of the mobile phone charger. 3. The mobile phone external battery box according to claim 1, wherein the plug is used in conjunction with a charger interface of the mobile phone. 4. The mobile phone external battery box according to claim 1, wherein the box body is provided with an upper cover. 5. The mobile phone external battery case according to claim 1, wherein a clip is provided on the outer wall of the case body.

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