CN2341281Y

CN2341281Y - Charger for mobile telephone

Info

Publication number: CN2341281Y
Application number: CN98207651U
Authority: CN
Inventors: 赵文忠
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-07-28
Filing date: 1998-07-28
Publication date: 1999-09-29
Anticipated expiration: 2008-07-28

Abstract

The utility model relates to a charger for a mobile phone. Magnetic fields produced by a main iron core of a charging seat and an induction iron core of a power supply induction device in a mobile phone are interacted to induct current needed for charging. Without a metal contact terminal transmitting electric energy, and transmitting the electric energy in the mode of winding induction, the utility model can carry out charging without perfect alignment to the charging seat, bad contact and influence on the normal operation of the circuit, and the charging time can also be reduced.

Description

The charging device of mobile phone

A kind of charging device of mobile phone belongs to electricity power transformation field AC-DC power transformation class.

Traditional mobile phone and cradle combination, mostly with the media of metal terminal as the transmission electric energy, for example the Taiwan number of patent application is for No. 85204211 a mobile phone battery charge contact chip structure-improved, it is pressed in the key text and just makes the charging media with the metal contact, No. 85207792, the Taiwan number of patent application in addition, it is a mobile phone charging connector terminal structure, mainly in the tab terminal punching course, form the terminal combination that the tab terminal of given number rearranges mutually, be to use the mode of metal terminal equally; This by the media mode of metal terminal as the transmission electric energy, when reality is charged, can produce the problem of loose contact, as not aiming at the metal terminal of cradle, can't charge, charge with the metal terminal way of contact, can produce a large amount of electric energy losses, make rechargeable energy restricted, make the charging interval lengthening, cause and use inconvenience; The coil-induced technology of the moving toothbrush of institute's sale of electricity on the market, adopt the drum type main core, cooperate the coil-induced transmission electric energy of cylindric induction realization unshakable in one's determination, but this mode can not reach the purpose that must accurately not aim at mobile phone and cradle, all awaits researching and solving.

The purpose of this utility model provides a kind of charging device that is used for mobile phone, adopts the mode of handtailor coil induction, and reaching does not need accurately to aim at just can charge, and uses the higher levels of electrical power charging, reduces the charging interval, does not influence the circuit operate as normal.

The purpose of this utility model can realize by following measure: this device comprises that a main core is provided with the coiling that converts electrical energy into magnetic energy, coiling connects power supply circuit, power supply circuit connects control circuit, one power induction device comprises that mainly an induction iron core which is provided with coiling, the coiling output is connected with rectifying device, the output of rectifying device connects sensor, and sensor is connected with a battery; One information generator, one end connects coiling, and the other end and sensor join; The purpose of this utility model can also realize by following measure: iron core is outside triangle of an opening or semicircular shape; Sensor connects a voltage detection circuit by a current-sensing circuit and forms, and current-sensing circuit is connected with rectifier and battery, and voltage detection circuit is in parallel with battery; Voltage detection circuit can be general bleeder circuit; Current-sensing circuit can be a current sense element.

The utility model has the advantages that: must accurately not aim at promptly chargeablely, and use the higher levels of electrical power charging to reduce the charging interval, and do not influence the circuit operate as normal.

The explanation of accompanying drawing drawing:

Fig. 1 is the electrical block diagram of the utility model embodiment

Fig. 2 is the further announcement circuit block diagram of sensor among the utility model embodiment

Fig. 3 responds to three-dimensional view unshakable in one's determination and main core among the utility model embodiment

Now contrasting accompanying drawing is described in detail as follows the utility model embodiment:

The circuit structure of the utility model embodiment (Fig. 1) mainly comprises a power induction device 1 and a cradle 4; Power induction device 1 is loaded in the mobile phone of mobile phone, here only promptly partly illustrated about the battery of mobile telephone charging circuit with regard to power induction device 1, be provided with an induction unshakable in one's determination 7 in the power induction device 1, the surface of induction unshakable in one's determination 7 is provided with plural number circle coiling 8, to induce the required electric current of battery 2 chargings in the mobile phone, the output of coiling 8 is connected with rectifying device 17, and rectifying device 17 usefulness are battery 2 charge power supplies; According to using battery 2 types that rectifying device 17 is done different charging circuit combinations,, mainly be used battery 2 and selected as half-wave or full-wave rectification etc.Battery 2 can be used Ni-MH battery, nickel-cadmium cell and lithium battery or the like, adopts as required; The output of rectifying device 17 connects a sensor 3, and sensor 3 back is connected with a battery, and the setting of sensor 3 is in order to detecting the present charged state of battery, as about present capacity of charging voltage, charging current or battery or the like; Sensor 3 block diagrams (Fig. 2) among the utility model embodiment are connected between sensor 3 and the coiling 8 comprising an information generator 18, send it back cradle 4 in order to the signal that sensor 3 is sensed; The signalling formula of information generator 18 can be divided into two kinds, the short-circuit type that coiling 8 receives (Fig. 2) transmits signal 9 and discontinuous transmits signal 10 dual modes, wherein short-circuit type is meant cradle 4 one of is sent in the charging pulse signal of power induction device 1 the periodic signal short circuit, the short circuit of for example available coil short mode, utilize duration of short circuit that the control circuit 5 that the signal of information generator 18 is sent in the cradle 4 is made further magnetic field energy control and treatment, it is short circuit that the oblique line that indicates B among Fig. 2 is partly represented the signal that is transmitted; Discontinuous then refers to cradle 4 is sent in the charging pulse signal of power induction device 1, be interrupted one-period every several cycles, utilize the cycle of this interruption, the control circuit 5 that the signal of information generator 18 is sent to cradle 4 is made further control and treatment, and the horizontal line that indicates A among Fig. 2 is partly represented the interval signal of transmission; Sensor 3 (Fig. 2) comprises a current-sensing circuit 15 and a voltage detection circuit 16, current-sensing circuit 15 is connected with rectifier 17 and battery 2, charge to the size of current of battery 2 with detecting, 16 of voltage detection circuits are in parallel with battery 2, with the charging voltage of detecting battery 2; Voltage detection circuit 16 is also further measured battery 2 present capacity status (judging capacity with voltage), inform cradle 4 control chargings, voltage detection circuit 16 has a bleeder circuit, in order to the detecting charging voltage, and current-sensing circuit 15 is that a series connection one current sense element is with the detecting charging current, cradle 4 comprises a main core 11, its surface is provided with coiling 12, coiling 12 connects power supply circuit 6, power supply circuit 6 connects control circuit 5 again, the required power supply of power supply circuit 6 supply chargings, because the effect of coiling 12 produces magnetic field to main core 11, make induction unshakable in one's determination 7 also produce magnetic field, and then make the coiling 8 in the induction unshakable in one's determination 7 produce electric current, can charge battery 2; Control circuit 5 in the cradle 4 is used for receiving the correlation values that sensor 3 detects and sends out through information generator 18, and power supply circuit 6 controlled, when overcharging, when promptly Zhen Ce charging voltage or electric current are too high, just reduce charging voltage or charging current, powered-down supply in case of necessity is in order to avoid battery is damaged or reduced battery life.

Emphasis of the present utility model is main core 11 and the change of responding to 7 shapes unshakable in one's determination and set-up mode, main core 11 outward appearances are the outside triangular shape of an opening (Fig. 2), also can be made into a semi-circular shape, the both sides of main core 11 breach ends are provided with double-deck unshakable in one's determination 13,14, this breach end is aimed at induction unshakable in one's determination 7, one side of main core 11 and the plural number circle coiling 12 of responding to setting on unshakable in one's

determination

7,8 convert electrical energy into magnetic energy (being induced the magnetic energy of iron core 11 by the electric energy of coiling 12), and magnetic energy is converted to electric energy (will respond to unshakable in one's determination 7 magnetic energy by coiling 8 is converted to electric energy and exports), and effectively the power supply supply in the cradle 4 is transmitted in battery 2 in the power induction device 1, because the shape of main core 11, can make the coiling 8 of induction unshakable in one's determination 7 produce bigger charging induction range, realize the charging modes that non-terminal connects, and the area of induction charging is wider, does not need accurately to aim at cradle 4; Need not to use metal terminal, can not come in contact bad problem, truly have progressive, practicality, do not see before the application that commercially available and any publication disclosed.

Claims

1. the charging device of a mobile phone, it is characterized in that: this device includes a main core and is provided with the coiling that converts electrical energy into magnetic energy, and coiling connects power supply circuit, and power supply circuit connects control circuit; One power induction device comprises that mainly an induction iron core which is provided with coiling, and the coiling output is connected with rectifying device, and the output of rectifying device connects sensor, and sensor is connected with a battery; One information generator, one end connects coiling, and the other end and sensor join.

2. the charging device of mobile phone according to claim 1, it is characterized in that: iron core is outside triangle of an opening or semicircular shape.

3. the charging device of mobile phone according to claim 1, it is characterized in that: sensor connects a voltage detection circuit by a current-sensing circuit and forms, and current-sensing circuit is connected with rectifier and battery, and voltage detection circuit is in parallel with battery.

4. the charging device of mobile phone according to claim 3, it is characterized in that: voltage detection circuit can be general bleeder circuit.

5. the charging device of mobile phone according to claim 3, it is characterized in that: current-sensing circuit can be a current sense element.