CN201057374Y - Rechargeable flashlight - Google Patents
Rechargeable flashlight Download PDFInfo
- Publication number
- CN201057374Y CN201057374Y CNU200720079299XU CN200720079299U CN201057374Y CN 201057374 Y CN201057374 Y CN 201057374Y CN U200720079299X U CNU200720079299X U CN U200720079299XU CN 200720079299 U CN200720079299 U CN 200720079299U CN 201057374 Y CN201057374 Y CN 201057374Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- input
- lead
- parallel
- rectification circuit
- 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
Links
- 239000002253 acid Substances 0.000 claims abstract description 17
- 239000003990 capacitor Substances 0.000 claims abstract description 10
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Images
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a chargeable flashlight which solves the problems of unsafe charging and short service life by using lead-acid battery as power supply. An electrode of a power supply socket is connected with an input interface of a rectification circuit (2) through a current limited circuit (1) of a capacitor and the other input interface of the rectification circuit (2) is connected with the other electrode of the power supply socket; a lead-acid battery (5) and a lamp (6) are in parallel connected with an output interface of the rectification circuit (2); an input interface of the lead-acid battery (5) is connected in parallel with a voltage regulator circuit (3) which consists of an inductor L and a voltage regulator diode DW in series.
Description
Technical field:
The utility model with use lead-acid accumulator relevant as the charge type flashlight of power supply.
Background technology:
Existing charge type flashlight adopts capacitor current-limiting type constant-current charge circuit to give lead acid battery charge, though circuit structure is simple, with low cost, uses dangerous.Its reason is that the DC voltage of charging circuit output approximates AC-input voltage, and fluctuates with the fluctuation of AC-input voltage.After the DC voltage of input surpasses lead-acid accumulator set upper limit voltage, battery will produce a large amount of hydrogen.The safety cap that excessive hydrogen and acid solution will be washed battery open releases, and makes battery malfunction and corrodes peripheral devices, and the service life of charge type flashlight is very short.
The utility model content:
The purpose of this utility model provides a kind of simple in structure, and is with low cost, safe in utilization, the charge type flashlight of long service life.
The utility model is achieved in that
The utility model charge type flashlight, the capacitor current-limiting circuit 1 of one utmost point of the ac power plug on the cylindrical shell in cylindrical shell connects an input of rectification circuit 2, another input of rectification circuit 2 is connected with another utmost point of ac power plug, the output of rectification circuit 2 is parallel with lead-acid accumulator 5 and illuminating lamp 6, the input of lead-acid accumulator 5 is parallel with mu balanced circuit 3, and mu balanced circuit 3 is made up of inductance L and Zener diode DW polyphone.
Filter capacitor C is arranged
2In parallel with mu balanced circuit 3.
One end of mu balanced circuit 3 is connected with an input of battery 5 through the non-return circuit 4 of diode, and rectification circuit 2 is diode D
1-D
4The full-wave rectifying circuit of forming.
Capacitor current-limiting circuit 1 is by the capacitor C of parallel connection
1And resistance R
1Form, illuminating lamp 6 is by the resistance R of series connection
3Form with LED, charging indicator light D is arranged
5And resistance R
2Be connected in series with between the input and output of full-wave rectifying circuit 2.
The utility model is parallel with the mu balanced circuit of inductance L and Zener diode DW composition at the input of lead-acid accumulator, realized charging safety with extremely low cost, be provided with the non-return circuit of diode between mu balanced circuit and the battery input, can stop battery to discharge when not charging to charging circuit, cooperate capacitance current-limiting and full-wave rectifying circuit again, required specification requirement in the time of satisfying lead acid battery charge, can not overcharge, there are not a large amount of hydrogen generations and acid solution to release, increased the service life of flashlight greatly, with low cost, safe in utilization.
Description of drawings:
Fig. 1 is a block diagram of the present utility model.
Fig. 2 is circuit theory diagrams of the present utility model.
The specific embodiment:
See Fig. 2, C
1, R
1Form the capacitance current-limiting circuit, D
1-D
4Be typical diode full-wave rectifying circuit, R
2, D
5Be the charging beacon lamp, C
2, L, DW form direct current regulation circuit, C
2Be filter condenser (for saving cost, also can not wanting), L flows inductance late, and DW is a Zener diode, and the parameter value that changes L, DW can satisfy required voltage of voltage regulation and electric current, D
2Be non-return diode, electric current can be unblocked when lead acid battery charge, can stop lead-acid accumulator to leak electricity to charging circuit when not charging, and E is a lead-acid accumulator, LED, R
3Be the flashlight light source, be subjected to the control of K switch.
Claims (4)
1. charge type flashlight, the capacitor current-limiting circuit (1) of one utmost point of the ac power plug on the cylindrical shell in cylindrical shell connects an input of rectification circuit (2), another input of rectification circuit (2) is connected with another utmost point of attaching plug, the output of rectification circuit (2) is parallel with lead-acid accumulator (5) and illuminating lamp (6), the input that it is characterized in that lead-acid accumulator (5) is parallel with mu balanced circuit (3), and mu balanced circuit (3) is made up of inductance L and Zener diode DW polyphone.
2. charge type flashlight according to claim 1 is characterized in that having filter capacitor C
2In parallel with mu balanced circuit (3).
3. charge type flashlight according to claim 1 is characterized in that an end of mu balanced circuit (3) is connected through the input of the non-return circuit of diode (4) with battery (5), and rectification circuit (2) is diode D
1-D
4The full-wave rectifying circuit of forming.
4. charge type flashlight according to claim 3 is characterized in that the capacitor C of capacitor current-limiting circuit (1) by parallel connection
1And resistance R
1Form, illuminating lamp (6) is by the resistance R of series connection
3Form with LED, charging indicator light D is arranged
5And resistance R
2Be connected in series with between the input and output of full-wave rectifying circuit (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720079299XU CN201057374Y (en) | 2007-04-24 | 2007-04-24 | Rechargeable flashlight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720079299XU CN201057374Y (en) | 2007-04-24 | 2007-04-24 | Rechargeable flashlight |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201057374Y true CN201057374Y (en) | 2008-05-07 |
Family
ID=39426217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720079299XU Expired - Fee Related CN201057374Y (en) | 2007-04-24 | 2007-04-24 | Rechargeable flashlight |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201057374Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103532182A (en) * | 2013-09-24 | 2014-01-22 | 小米科技有限责任公司 | Charging assembly, portable electronic equipment and protection shell |
-
2007
- 2007-04-24 CN CNU200720079299XU patent/CN201057374Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103532182A (en) * | 2013-09-24 | 2014-01-22 | 小米科技有限责任公司 | Charging assembly, portable electronic equipment and protection shell |
| CN103532182B (en) * | 2013-09-24 | 2015-12-02 | 小米科技有限责任公司 | Charging assembly, portable electric appts and containment vessel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080507 |