CN2544420Y - Electricity recharger for lithium cell - Google Patents
Electricity recharger for lithium cell Download PDFInfo
- Publication number
- CN2544420Y CN2544420Y CN 02220801 CN02220801U CN2544420Y CN 2544420 Y CN2544420 Y CN 2544420Y CN 02220801 CN02220801 CN 02220801 CN 02220801 U CN02220801 U CN 02220801U CN 2544420 Y CN2544420 Y CN 2544420Y
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- CN
- China
- Prior art keywords
- charging
- diode
- resistance
- lithium battery
- voltage
- 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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- Y02E60/12—
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a lithium battery charging device. A transformer or switching power supply is replaced by capacitor depressing voltage, thus the cost is greatly decreased and the structure is simplified. A zener diode ensures the circuit charging charge voltage stay within proper range and avoids battery damage caused by the impulsions of transient peak voltage.
Description
Technical field: the utility model relates to a kind of lithium battery charging device.
Background technology: Li-ion rechargeable pond (abbreviation lithium battery) obtains to use widely with excellent properties such as its capacity is big, in light weight, volume is little, memory-less effects in a lot of fields.But because the particularity of this body structure of lithium battery; the infringement of in charging process, very easily being overcharged even the danger of blast on fire takes place; so when giving lithium cell charging, must use special charging device (charger) to charge with automatic monitoring system defencive function; make it in charging process, monitor the charged state of battery at any time; in case battery full charge (promptly reaching end of charge voltage); charger just stops charging automatically; to prevent the over-charging of battery damage and to cause danger; existing lithium battery charger is owing to adopt transformer and switching circuit to carry out step-down and voltage stabilizing; so complex structure; price is higher; and price is lower; then because of producing the factor of cost; mostly be to utilize the protective circuit of lithium battery self to carry out Monitoring and Controlling, so its reliability must be had a greatly reduced quality.
Summary of the invention: the purpose of this utility model is to provide a kind of lithium battery charging device, and it has simple in structure, low-cost, highly reliable advantage.
For realizing the purpose of this utility model, the technical solution of being taked is as follows: civil power is connected to full bridge rectifier after the parallel circuits step-down of electricity group (R1) and electric capacity (C1) composition (D1～ac input end D4) constitutes the input circuit of charging circuit, (D1～negative output terminal D4) is connected with the negative pole of charging electrode (GND) full bridge rectifier, positive output end is connected with the positive pole (V+) of charging electrode through the series arm of current-limiting resistance (R2) and diode (D7), is connected with voltage-stabiliser tube (D5) between the negative pole (GND) of diode (D7) positive pole and charging electrode.
Owing to adopted capacitance decompression to replace transformer or Switching Power Supply, cost is reduced widely, simplify the structure, voltage stabilizing didoe can be guaranteed the circuit charging voltage at optimum range, avoids the moment peak voltage that battery is impacted so that damage.
The utility model is described in further detail below in conjunction with accompanying drawing, is both to provide embodiment.
Description of drawings:
Fig. 1 is the utility model example structure schematic diagram;
Fig. 2 is Fig. 1 vertical view;
Fig. 3 is the present embodiment circuit theory diagrams.
Specific embodiment: as Fig. 1, shown in Figure 2, the lithium battery charging device housing is by loam cake 1 and 2 involutory compositions of lower cover, injection molded by ambroin, be fixed with the copper pin 3 that cooperates with wall socket on the lower cover 2 and constitute power input plug, loam cake 2 outsides are provided with battery storage chamber 4 and transparent shroud 9, battery storage chamber 4 can two batteries placed side by side, battery storage 4 two ends, chamber are respectively equipped with anodal V+ of copper charging and negative pole GND, also be provided with indicator light installing hole 5 on the loam cake 2, light-emitting diode D7 is placed in one, the charging circuit components and parts are installed on the printed substrate 6, and printed substrate 6 is fixed in the shell inner cavity and installs on the column 7.
The charging circuit structure is as follows: as shown in Figure 3, civil power is connected to the input circuit of the ac input end formation charging circuit of full bridge rectifier D1～D4 after the parallel circuits step-down of resistance R 1 and capacitor C 1 composition, the negative output terminal of full bridge rectifier D1～D4 is connected with the negative pole GND of charging electrode, positive output end is through current-limiting resistance R2 and diode D7, the series arm of D8 is connected with the anodal V+ of charging electrode, be connected with voltage-stabiliser tube D5 between the negative pole GND of diode D7 positive pole and charging electrode, the D6 parallel branch, lithium battery charging device is provided with charging indication, charging indication is by resistance R 3, R4, R5 and light-emitting diode D9 form, resistance R 3 is connected on resistance R 2 and diode D7, in the series arm of D8, resistance R 4 and light-emitting diode D7 series connection back and resistance R 3, the parallel connection of diode D7 series arm, resistance R 5 are connected across between the negative pole GND of light-emitting diode D7 positive pole and charging electrode.
During use, battery 8 to be charged places battery storage chamber 4, and builds transparent shroud 9, the positive and negative electrode of battery 8 contacts with negative pole GND with the anodal V+ of charging respectively, and this moment, light-emitting diode D7 lighted, and expression is charged, light-emitting diode D7 extinguishes, and the expression charging is finished.
Claims (3)
1, a kind of lithium battery charging device, comprise housing, power input plug, circuit board, charging circuit and charging electrode, it is characterized in that: civil power is connected to full bridge rectifier after the parallel circuits step-down of electricity group (R1) and electric capacity (C1) composition (D1～ac input end D4) constitutes the input circuit of charging circuit, (D1～negative output terminal D4) is connected with the negative pole of charging electrode (GND) full bridge rectifier, positive output end is connected with the positive pole (V+) of charging electrode through the series arm of current-limiting resistance (R2) and diode (D7), is connected with voltage-stabiliser tube (D5) between the negative pole (GND) of diode (D7) positive pole and charging electrode.
2, according to the described lithium battery charging device of claim 1, it is characterized in that: lithium battery charging device is provided with charging indication, charging indication is made up of resistance (R3, R4, R5) and light-emitting diode (D9), resistance (R3) is connected in the series arm of resistance (R2) and diode (D7), resistance (R4) and light-emitting diode (D7) series connection back and resistance (R3), diode (D7) series arm are in parallel, and resistance (R5) is connected across between the negative pole (GND) of light-emitting diode (D7) positive pole and charging electrode.
3, according to claim 1 or 2 described lithium battery charging devices, it is characterized in that: be parallel with voltage-stabiliser tube (D6) on the voltage-stabiliser tube (D5) simultaneously, also be in series with diode (D8) behind the diode (D7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02220801 CN2544420Y (en) | 2002-05-23 | 2002-05-23 | Electricity recharger for lithium cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02220801 CN2544420Y (en) | 2002-05-23 | 2002-05-23 | Electricity recharger for lithium cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2544420Y true CN2544420Y (en) | 2003-04-09 |
Family
ID=33699028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02220801 Expired - Fee Related CN2544420Y (en) | 2002-05-23 | 2002-05-23 | Electricity recharger for lithium cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2544420Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009094931A1 (en) * | 2008-01-28 | 2009-08-06 | Ang Yang | Charge-and-work type charging battery |
-
2002
- 2002-05-23 CN CN 02220801 patent/CN2544420Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009094931A1 (en) * | 2008-01-28 | 2009-08-06 | Ang Yang | Charge-and-work type charging battery |
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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 |