CN2327109Y - Charging device - Google Patents
Charging device Download PDFInfo
- Publication number
- CN2327109Y CN2327109Y CN98208477U CN98208477U CN2327109Y CN 2327109 Y CN2327109 Y CN 2327109Y CN 98208477 U CN98208477 U CN 98208477U CN 98208477 U CN98208477 U CN 98208477U CN 2327109 Y CN2327109 Y CN 2327109Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- transistor
- current
- control circuit
- charger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a charging device, comprising a power circuit and a charging stand, and is characterized in that the utility model also comprises a current amplifying circuit and a control circuit, wherein, the current amplifying circuit comprises a first and a second transistors whose conduction is controlled by the control circuit, a plurality of current-limiting resistors connected in parallel with the second transistor and a radiation fin connected with the outer margin of the second transistor; the control circuit comprises a charging capacitor connected with the current amplifying circuit, and a third and a fourth transistors which can be connected with the charging capacitor and can be used for switching control. The power circuit is connected with each circuit; the charging stand is connected between the current amplifying circuit and the control circuit.
Description
The utility model relates to a kind of charger, relates in particular to a kind of quickly-chargeable and can not make rechargeable battery produce the charger of high temperature again.
General charger can use bigger electric current to battery charge in order to reach the purpose of quick charge, makes battery can produce high temperature when being full of electricity, thereby shortens battery life.In addition, also having a kind of charger is in order to prevent that battery from can produce high temperature when being full of electricity, and to battery charge, still, the charging interval of this charger is but considerably long, loses time very much with less current.
The purpose of this utility model is to provide a kind of improved charger, and it can reach quick charge effectively and can not make rechargeable battery produce the effect of high temperature.
The purpose of this utility model is achieved in that
A kind of charger comprises a power circuit and a cradle, is characterized in that this charger also comprises:
One current amplification circuit, this current amplification circuit comprise the first transistor and the transistor seconds that can be controlled conducting by this control circuit, and most the current-limiting resistances in parallel with transistor seconds, and connect a fin in the outer rim of this transistor seconds;
One control circuit, this control circuit comprises the charging capacitor that is connected with current amplification circuit, and the 3rd transistor and the 4th transistor that are connected and can do switch control with this charging capacitor;
Described power circuit connects each circuit;
Described cradle is connected between current amplification circuit and the control circuit.
In above-mentioned charger, wherein, described transistor seconds is a power transistor.
In above-mentioned charger, wherein, be connected an indicator light between described power circuit and the control circuit.
The utility model has the advantage and the effect of the following stated thus owing to adopt above technical scheme:
(1) quickly-chargeable: the utility model is owing to utilize the charging capacitor of control circuit to insert cradle Hou at rechargeable battery, discharge immediately so that rechargeable battery is charged, and trigger the first transistor and transistor seconds subsequently, to amplify the charging current of being supplied, therefore can reach the effect that is full of electric energy fast effectively by power circuit.
(2) rechargeable battery can not produce high temperature: the fin of the utility model by connecting in the transistor seconds outer rim, electric current after current-amplifying device is amplified is when flowing through transistor seconds, the elevated temperature heat that is produced can be absorbed by fin, and makes rechargeable battery can not produce high temperature.
By the description of a following embodiment to the utility model charger, can further connect the purpose of this utility model in conjunction with its accompanying drawing.Architectural feature and advantage.Wherein, accompanying drawing is:
Fig. 1 is the circuit box schematic diagram according to the charger that the utility model proposes.
Fig. 2 is the electrical schematic diagram according to the charger that the utility model proposes.
As shown in Figure 1, 2, charger 1 of the present utility model comprises a power circuit 2, a current amplification circuit 3, a control circuit 4 and a cradle 5.
This power circuit 2 has a transformation rectifying device, can supply each circuit required working power, and its detailed structure is a conventional art, so no longer be described in detail.
This current amplification circuit 3 comprises can be by the first transistor Q1 and the transistor seconds Q2 of these control circuit 4 control conductings, and three current-limiting resistance R2, R3, R4s in parallel with transistor seconds Q2, and the outer rim at this transistor seconds Q2 is connected with a fin 6, and this transistor seconds Q2 is a power transistor.
This control circuit 4 comprises the charging capacitor C that is connected with current amplification circuit 3, and the 3rd transistor Q3 and the 4th transistor Q4 that are connected and can be used as control switch with this charging capacitor C, and between the base stage (Base) of this power circuit 2 and the 4th transistor Q4, be connected an indicator light LED.
Can place rechargeable battery (figure does not show) in this cradle 5 and put, and be connected between this current amplification circuit 3 and the control device 4.As Fig. 1, shown in 2, when rechargeable battery is not inserted cradle 5 as yet, the 4th transistor Q4 of this control circuit 4 conducting that is triggered constitutes the loop, the electric current that power circuit 2 is supplied charges to saturation condition via 6 couples of charging capacitor C of resistance R, at this moment, this indicator light LED is the state that is extinguishing, and after rechargeable battery is gone in this cradle 5 according to normal utmost point position, the electric current I 1 that this power circuit 2 is supplied is via this indicator light LED and 5 chargings of 1 pair of cradle of resistance R, this charging capacitor C can begin discharge simultaneously, and discharging current 12 is in regular turn via this resistance R 6, R1 is to cradle 5 chargings, because this charging capacitor C begins discharge, so this indicator light LED this moment just can be shinny, to inform that the user is in charged state at present, and when the potential difference at this charging capacitor C two ends is reduced to a certain degree because of discharge, the first transistor Q1 of this current amplification circuit 3 conducting that just can be triggered, this the first transistor Q1 can force transistor seconds Q2 conducting simultaneously, and formation electric current amplification, the electric current 11 that this power circuit 2 is supplied can be divided to the current-limiting resistance R2 of three parallel connections, R3, R4, and then integrate the electric current amplification that is constituted via this first transistor Q1 and transistor seconds Q2 and amplify, form another charging current I3 to these cradle 5 chargings, and when the potential difference at this charging capacitor C two ends drops to more electronegative potential because of discharge, the 4th transistor Q4 can be cut off and close, and the 3rd transistor Q3 conducting that can be triggered constitutes the loop, at this moment, rechargeable battery in this cradle 5 has been charged to saturation condition, so this indicator light LED can extinguish automatically, finish to inform that the user charges.Because, this cradle 5 is by electric current I 1, the big charging current I of I2 and the formation that I3 converges of process amplified current charges, therefore, can reach the purpose that is full of electric energy fast effectively, simultaneously, also because can flow through the transistor seconds Q2 that adopts power transistor through the electric current I 3 of amplifying Hou, so, this transistor seconds Q2 can resist the high temperature heat that big electric current I 3 is produced effectively, the elevated temperature heat that produced of this electric current I 3 fin that can be connected this transistor seconds Q2 outer rim absorbs simultaneously, therefore, rechargeable battery can not produce high temperature when being full of electric energy.
Charger of the present utility model is owing to utilize the charging capacitor of control circuit after rechargeable battery is inserted cradle, discharge immediately rechargeable battery is charged, and triggering the first transistor and transistor seconds, by amplifying the charging current of supplying by power circuit, reach the function of quick charge, simultaneously, the heat that charging current produced after the amplification, can make rechargeable battery can not produce high temperature by dispelling the heat by the fin that is connected the transistor seconds outer rim.
Claims (3)
1. a charger comprises a power circuit and a cradle, it is characterized in that this charger also comprises:
One current amplification circuit, this current amplification circuit comprise the first transistor and the transistor seconds that can be controlled conducting by this control circuit, and most the current-limiting resistances in parallel with transistor seconds, and connect a fin in the outer rim of this transistor seconds;
One control circuit, this control circuit comprises the charging capacitor that is connected with current amplification circuit, and the 3rd transistor and the 4th transistor that are connected and can do switch control with this charging capacitor;
Described power circuit connects each circuit;
Described cradle is connected between current amplification circuit and the control circuit.
2. charger as claimed in claim 1 is characterized in that:
Described transistor seconds is a power transistor.
3. charger as claimed in claim 1 is characterized in that:
Be connected an indicator light between described power circuit and the control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98208477U CN2327109Y (en) | 1998-04-08 | 1998-04-08 | Charging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98208477U CN2327109Y (en) | 1998-04-08 | 1998-04-08 | Charging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2327109Y true CN2327109Y (en) | 1999-06-30 |
Family
ID=33964193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98208477U Expired - Fee Related CN2327109Y (en) | 1998-04-08 | 1998-04-08 | Charging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2327109Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101662162B (en) * | 2009-01-23 | 2012-02-15 | 深圳市福嘉太科技有限公司 | Current amplification quick charge circuit used for hand-hold electronic device |
-
1998
- 1998-04-08 CN CN98208477U patent/CN2327109Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101662162B (en) * | 2009-01-23 | 2012-02-15 | 深圳市福嘉太科技有限公司 | Current amplification quick charge circuit used for hand-hold electronic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |