JP3096734U - Auxiliary charging device for mobile phones - Google Patents

Abstract

(57) [Problem] To provide an auxiliary charging device for a mobile phone capable of preventing deterioration of a secondary battery of the mobile phone and eliminating the risk of destruction to a personal computer. SOLUTION: A first plug 11 connected to a connector terminal 2a of a mobile phone 2 and a USB terminal 3 of a personal computer 3 are provided.
a connection cable 13 for connecting the second plug 12 connected to the power supply line, the power output line of the USB terminal 3a, and the power input line of the connector terminal 2a;
And a protection resistor 14 provided on the cable line 13a. When an overcurrent flows, the protection resistor 14 is burned out or melted by a fuse resistor to cut off the circuit.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

  The present invention includes a first plug connected to a connector terminal of a mobile phone and a computer. Second plug connected to the USB terminal on the power supply side, and a power output line of the USB terminal And a connection cable for connecting the power input line of the connector terminal. The present invention relates to an auxiliary charging device for a mobile phone.

[0002]

[Prior art]

  The cell phone has a rechargeable secondary battery as a power source, Then you need to recharge. For that purpose, a dedicated charger for mobile phones is provided. However, it was difficult to miniaturize and it was inconvenient to carry. So, the US of PC Auxiliary charging device for a mobile phone that takes out power from a B terminal and charges the battery It is known from JP201204.

[0003]   The auxiliary charging device for mobile phones according to this known technology is connected to the USB terminal of a personal computer. Connected to the connector plug of the mobile phone and the connector cable that is used It consists of a connector plug. And DC5V is output from the USB terminal Power supply line (Vcc, GND) for ing.

[0004]

[Problems to be solved by the device]

  However, the above-mentioned known technique has the following problems. I.e. mobile Lithium ion secondary batteries are often used as secondary batteries for telephones. This re If the charging voltage or charging current is not controlled below a certain level, the thium ion secondary battery will It has the drawback of accelerating the deterioration of sex. Therefore, in consideration of such characteristics, charging The secondary battery built into the mobile May cause an excessive charging current to flow or cause an overcharge condition and deteriorate the secondary battery. Become. Moreover, it exceeds 500mA which is the general current capacity of the USB power supply of the personal computer. If a current that flows is applied, the personal computer may be destroyed.

[0005]   The present invention has been made in view of the above circumstances, and its problem is to solve the problem A mobile phone that prevents the deterioration of the battery and eliminates the risk of damage to the PC It is to provide an auxiliary charging device for a telephone.

[Means for Solving the Problems]

  In order to solve the above problems, the auxiliary charging device for a mobile phone according to the present invention is   A first plug connected to a connector terminal on the mobile phone side,   A second plug connected to the USB terminal on the computer side,   Connect the power output line of the USB terminal and the power input line of the connector terminal Connection cable to connect,   And a protective resistance provided on the cable wire of the connection cable, To do.   The auxiliary charging device for a mobile phone according to this configuration includes a first plug and a second plug. , The first plug is connected to the connector terminal on the mobile phone side, the second plug is the computer Connected to the USB terminal on the computer side. The USB terminal has two power output lines and two There are two data lines, but the connection cable can Connected to the power input line on the mobile phone side. And the cable of the connecting cable A protective resistance is provided on the cable. Therefore, this protection resistor prevents overcurrent. , It is possible to prevent an excessive charging current from flowing to the secondary battery. As a result, mobile phone A portable device that prevents deterioration of the secondary battery and eliminates the risk of damage to the PC. An auxiliary charging device for a mobile phone can be provided.

[0006]   As a preferred embodiment of the present invention, the protection resistor burns and breaks when an overcurrent occurs. There is one that is configured to.   As a result, the protective resistance burns out and the wire breaks, so that overcurrent continues to flow. It can be prevented.

[0007]   According to another preferred embodiment of the present invention, the protection resistor is a fuse resistor. Can be given.   When an overcurrent occurs, the fuse melts to prevent the overcurrent from continuing to flow it can.

[0008]

[Embodiment of device]

  A preferred embodiment of an auxiliary charging device for a mobile phone according to the present invention will be described with reference to the drawings. It Figure 1 shows a state in which a personal computer and a mobile phone are connected by an auxiliary charging device for the mobile phone. FIG. 2 is a diagram showing an appearance of an auxiliary charging device for a mobile phone, and FIG. 3 is a mobile phone. It is a conceptual diagram which shows the circuit structure of the talk auxiliary charging device.

[0009]   As shown in FIG. 1, a mobile phone auxiliary charging device 1 includes a connector terminal of a mobile phone 2. The first plug 11 connected to 2a and the US of the personal computer 3 (corresponding to a computer) The second plug 12 connected to the B terminal 3a. What is USB? Abbreviation for monkey serial bus, which is used to connect the PC and peripheral devices. It is one of the standards. The first plug 11 and the second plug 12 are connection cables. Connected by 13.

[0010]   As shown in Figure 3, the USB terminal has four connection lines Only the power line is needed to charge the secondary battery. 4 connection lines Is a power supply line (Vcc = 5V), a power supply line (GND), a data line (D + ), And a data line (D-). That is, Vcc and GND ( These are equivalent to the power output lines) and the power line on the connector terminal side of the mobile phone. Vcc and GND (these are equivalent to the power supply input line) of the first connection line 13a and the first connection line 13a. The two connection lines 13b are used for connection. Therefore, the capacity of the secondary battery of the mobile phone 2 is When the battery power becomes low, power is supplied from the personal computer 3 side using the auxiliary charging device 1 for mobile phones. You can get a salary. The data line of the USB terminal does not need to be connected.

[0011]   Further, the protection resistor 14 is provided in the middle of the first connection line 13a. This protection The resistor 14 has a function of preventing an overcurrent from flowing. Ie mobile phone A lithium ion secondary battery is often used as the secondary battery of No. 2, but the charging current is Unless it is suppressed below a certain value, there is a problem that the deterioration of characteristics is accelerated. Also, Paso The general current capacity of the USB power supply of Con 3 is about 500 mA, which exceeds it. If a current flows, it may damage your computer.

[0012]   Therefore, the protection resistor 14 as described above is provided. With this protection resistor 14, Since a pressure drop can be generated, an excessive current flows through the secondary battery of the mobile phone 2. If you try, you can limit this. In addition, the connection on the mobile phone 2 side Even if a situation such as a short circuit occurs in the input terminal 2a, the protective resistor 14 A voltage drop occurs and the personal computer can be protected.

[0013]   The protection resistor 14 should be a resistor that burns and breaks when an overcurrent flows. You can In addition, the fuse resistance is used to melt the circuit when an overcurrent flows. It may be configured so as to shut off.

[0014]   The connector terminal 2a may be compliant with the USB standard.

[Brief description of drawings]

FIG. 1 is a diagram showing a state in which a personal computer and a mobile phone are connected by a mobile phone auxiliary charging device.

FIG. 2 is a diagram showing an appearance of an auxiliary charging device for a mobile phone.

FIG. 3 is a conceptual diagram showing a circuit configuration of an auxiliary charging device for a mobile phone.

[Explanation of symbols]

1 Auxiliary charging device for mobile phones 2 mobile phones 2a Connector terminal 3 PC 3a USB terminal 11 First plug 12 Second plug 13 Connection cable 13a First connection line 13b Second connection line

Claims (3)

[Scope of utility model registration request] 1. A first plug connected to a mobile phone side connector terminal, a second plug connected to a computer side USB terminal, a power output line of the USB terminal, and a power input line of the connector terminal. An auxiliary charging device for a mobile phone, comprising a connection cable for connecting to and a protective resistance provided on a cable wire of the connection cable. 2. The auxiliary charging device for a mobile phone according to claim 1, wherein the protective resistor is burnt and disconnected when an overcurrent occurs. 3. The auxiliary charging device for a mobile phone according to claim 1, wherein the protection resistor is a fuse resistor.