CN203932982U - A kind of electric candle low-voltage protection circuit structure - Google Patents
A kind of electric candle low-voltage protection circuit structure Download PDFInfo
- Publication number
- CN203932982U CN203932982U CN201420048918.9U CN201420048918U CN203932982U CN 203932982 U CN203932982 U CN 203932982U CN 201420048918 U CN201420048918 U CN 201420048918U CN 203932982 U CN203932982 U CN 203932982U
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- Prior art keywords
- triode
- field effect
- effect transistor
- emitter
- battery
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- Expired - Lifetime
Links
- 230000005669 field effect Effects 0.000 claims abstract description 67
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 2
- 229910018095 Ni-MH Inorganic materials 0.000 claims description 2
- 229910018477 Ni—MH Inorganic materials 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- 229910052744 lithium Inorganic materials 0.000 claims description 2
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
A kind of electric candle low-voltage protection circuit structure, the battery BT1 that comprises minus earth, battery BT1 is anodal to be connected with the emitter of triode Q1 or the source collection of the first field effect transistor of control circuit switch, the source collection of the emitter of triode Q1 or the first field effect transistor is connected with the collector electrode of the triode Q2 of control circuit size of current or the drain electrode of the second field effect transistor through the base stage of triode Q1 or the grid of the first field effect transistor, and through the emitter of triode Q2 or the source collection ground connection of the second field effect transistor, the drain electrode of the collector electrode of described triode Q1 or the first field effect transistor is connected with the voltage sample circuit of ground connection, on voltage sample circuit, be parallel with the load R6 of ground connection, described voltage sample circuit is also connected with the base stage of triode Q2 or the grid of the second field effect transistor, and through the emitter of triode Q2 or the source collection ground connection of the second field effect transistor, effectively make battery BT1 and circuit disconnect, thereby protected the battery can overdischarge amount, extended the useful life of battery.
Description
Technical field
The circuit protection structure of the battery that the utility model relates to electric candle inside when low pressure.
Background technology
At present, electric candle is in no situation, its internal cell is for a long time in circuit, still can discharge, often this in the past, battery will damage because crossing to put, cause irreversible infringement, greatly reduce the useful life of the battery in electric candle, therefore, how making battery can over-discharge can be not the problem of needing solution present stage badly to extend battery.
Utility model content
The utility model aims to provide a kind of circuit structure of protecting the battery over-discharge can of electric candle inside and damaging.
A kind of electric candle low-voltage protection circuit structure described in the utility model, the battery BT1 that comprises minus earth, battery BT1 is anodal to be connected with the emitter of triode Q1 or the source collection of the first field effect transistor of control circuit switch, the source collection of the emitter of triode Q1 or the first field effect transistor is connected with the collector electrode of the triode Q2 of control circuit size of current or the drain electrode of the second field effect transistor through the base stage of triode Q1 or the grid of the first field effect transistor, and through the emitter of triode Q2 or the source collection ground connection of the second field effect transistor, the drain electrode of the collector electrode of described triode Q1 or the first field effect transistor is connected with the voltage sample circuit of ground connection, on voltage sample circuit, be parallel with the load R6 of ground connection, described voltage sample circuit is also connected with the base stage of triode Q2 or the grid of the second field effect transistor, and through the emitter of triode Q2 or the source collection ground connection of the second field effect transistor.
A kind of electric candle low-voltage protection circuit structure described in the utility model, when electric candle is not used for a long time, its inner battery BT1 also will continue electric discharge, when its voltage is fallen certain voltage value, voltage sample circuit collects this magnitude of voltage of voltage, thereby controlling triode Q2 or the second field effect transistor turn-offs, and then triode Q2 or the second field effect transistor further cause the shutoff of triode Q1 or the first field effect transistor, thereby battery BT1 is no longer discharged to load R6, effectively make battery BT1 and circuit disconnect, thereby protected the battery BT1 can overdischarge amount, extended the useful life of battery, also reduced the cost of again buying battery.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Embodiment
A kind of electric candle low-voltage protection circuit structure, as shown in Figure 1, the battery BT1 that comprises minus earth, battery BT1 is anodal to be connected with the emitter of triode Q1 or the source collection of the first field effect transistor of control circuit switch, the source collection of the emitter of triode Q1 or the first field effect transistor is connected with the collector electrode of the triode Q2 of control circuit size of current or the drain electrode of the second field effect transistor through the base stage of triode Q1 or the grid of the first field effect transistor, and through the emitter of triode Q2 or the source collection ground connection of the second field effect transistor, the drain electrode of the collector electrode of described triode Q1 or the first field effect transistor is connected with the voltage sample circuit of ground connection, on voltage sample circuit, be parallel with the load R6 of ground connection, described voltage sample circuit is also connected with the base stage of triode Q2 or the grid of the second field effect transistor, and through the emitter of triode Q2 or the source collection ground connection of the second field effect transistor.
On circuit between described battery BT1 positive pole and the emitter of triode Q1 or the source collection of the first field effect transistor, be connected with external power supply, extraneous power supply is connected with the negative electrode of diode D2, the anodic bonding of diode D2 is to the circuit between the emitter of triode Q1 or the source collection of the first field effect transistor, external power supply is also connected with the negative electrode of diode D1, and the anodic bonding of diode D1 is to the base stage of triode Q2 or the grid of the second field effect transistor.By foregoing circuit is set, can not have in electric situation at battery BT1, by access external power supply, be battery BT1 charging, on one side working load R6 on one side.
The structure of voltage sample circuit is varied, and inferior, described voltage sample circuit is diode D3, resistance R 5 and the resistance R 7 of series connection successively, and resistance R 7 is connected in parallel to the grid of base stage or the second field effect transistor of triode Q2.
Described resistance R 7 is in parallel with artificial sleep switch, and resistance R 7 parallel with one another is connected with the base stage of triode Q2 or the grid of the second field effect transistor with artificial sleep switch, and through the emitter of triode Q2 or the source collection ground connection of the second field effect transistor.By artificial sleep switch is set, can be when not using electric candle, direct closed artificial sleep switch, thereby make short circuit, it is 0 that thereby voltage sample circuit collects voltage, then the grid voltage of the base stage of triode Q2 or the second field effect transistor is 0, so that triode Q2 or the second field effect transistor cut-off work, and triode Q2 or the second field effect transistor further cause the shutoff of triode Q1 or the first field effect transistor, thereby battery BT1 is no longer discharged to load R6, more effectively make battery BT1 and circuit disconnect, further improved the useful life of battery BT1.
What on the circuit between described battery BT1 anodal and the emitter of triode Q1 or the source collection of the first field effect transistor, be parallel with respectively the electrodeless electric capacity C1 of ground connection and ground connection has an electrode capacitance C2, by the cooperation of the two, in case stop-pass is crossed interference and parasitic oscillation that power supply is introduced.
In the emitter of triode Q1 and base stage or on the source collection of the first field effect transistor and grid, be parallel with resistance R 1, thereby triode Q1 or the first field effect transistor are carried out to dividing potential drop, prevent that it from burning out because voltage is excessive.
Between the base stage of triode Q1 or the collector electrode of the source collection of the first field effect transistor and triode Q2 or the drain electrode of the second field effect transistor, be in series with resistance R 2, the electric current that prevents from flowing into triode Q2 or the second field effect transistor is excessive and be burned.
On the circuit being connected with the base stage of triode Q2 or the grid of the second field effect transistor at voltage sample circuit, be in series with resistance R 4, the electric current that prevents from flowing into triode Q2 or the second field effect transistor is excessive and be burned.
On connection line between on the grid of the base stage of diode D1 and triode Q2 or the second field effect transistor, be in series with resistance R 3, prevent that external power supply from flowing into the electric current of triode Q2 or the second field effect transistor excessive and be burned.
Described battery BT1 is Ni-MH battery, lithium battery, lead-acid battery or dry cell.
Claims (10)
1. an electric candle low-voltage protection circuit structure, it is characterized in that: the battery BT1 that comprises minus earth, battery BT1 is anodal to be connected with the emitter of triode Q1 or the source collection of the first field effect transistor of control circuit switch, the source collection of the emitter of triode Q1 or the first field effect transistor is connected with the collector electrode of the triode Q2 of control circuit size of current or the drain electrode of the second field effect transistor through the base stage of triode Q1 or the grid of the first field effect transistor, and through the emitter of triode Q2 or the source collection ground connection of the second field effect transistor, the drain electrode of the collector electrode of described triode Q1 or the first field effect transistor is connected with the voltage sample circuit of ground connection, on voltage sample circuit, be parallel with the load R6 of ground connection, described voltage sample circuit is also connected with the base stage of triode Q2 or the grid of the second field effect transistor, and through the emitter of triode Q2 or the source collection ground connection of the second field effect transistor.
2. a kind of electric candle low-voltage protection circuit structure according to claim 1; it is characterized in that: on the circuit between described battery BT1 positive pole and the emitter of triode Q1 or the source collection of the first field effect transistor, be connected with external power supply; extraneous power supply is connected with the negative electrode of diode D2; the anodic bonding of diode D2 is to the circuit between the emitter of triode Q1 or the source collection of the first field effect transistor; external power supply is also connected with the negative electrode of diode D1, and the anodic bonding of diode D1 is to the base stage of triode Q2 or the grid of the second field effect transistor.
3. a kind of electric candle low-voltage protection circuit structure according to claim 1; it is characterized in that: described voltage sample circuit is diode D3, resistance R 5 and the resistance R 7 of series connection successively, and resistance R 7 is connected in parallel to the grid of base stage or the second field effect transistor of triode Q2.
4. a kind of electric candle low-voltage protection circuit structure according to claim 3; it is characterized in that: described resistance R 7 is in parallel with artificial sleep switch; resistance R 7 parallel with one another is connected with the base stage of triode Q2 or the grid of the second field effect transistor with artificial sleep switch, and through the emitter of triode Q2 or the source collection ground connection of the second field effect transistor.
5. a kind of electric candle low-voltage protection circuit structure according to claim 1 and 2, is characterized in that: what on the circuit between described battery BT1 anodal and the emitter of triode Q1 or the source collection of the first field effect transistor, be parallel with respectively the electrodeless electric capacity C1 of ground connection and ground connection has an electrode capacitance C2.
6. a kind of electric candle low-voltage protection circuit structure according to claim 1 and 2, is characterized in that: in the emitter of triode Q1 and base stage or on the source collection of the first field effect transistor and grid, be parallel with resistance R 1.
7. a kind of electric candle low-voltage protection circuit structure according to claim 1 and 2, is characterized in that: between the base stage of triode Q1 or the collector electrode of the source collection of the first field effect transistor and the second triode or the drain electrode of the second field effect transistor, be in series with resistance R 2.
8. according to a kind of electric candle low-voltage protection circuit structure described in claim 1 or 3, it is characterized in that: on the circuit being connected with the base stage of triode Q2 or the grid of the second field effect transistor at voltage sample circuit, be in series with resistance R 4.
9. a kind of electric candle low-voltage protection circuit structure according to claim 2, is characterized in that: on the connection line between on the base stage of diode D1 and triode Q2 or the grid of the second field effect transistor, be in series with resistance R 3.
10. according to a kind of electric candle low-voltage protection circuit structure described in claim 1 or 2 or 5, it is characterized in that: described battery BT1 is Ni-MH battery, lithium battery, lead-acid battery or dry cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420048918.9U CN203932982U (en) | 2014-01-24 | 2014-01-24 | A kind of electric candle low-voltage protection circuit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420048918.9U CN203932982U (en) | 2014-01-24 | 2014-01-24 | A kind of electric candle low-voltage protection circuit structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203932982U true CN203932982U (en) | 2014-11-05 |
Family
ID=51828737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420048918.9U Expired - Lifetime CN203932982U (en) | 2014-01-24 | 2014-01-24 | A kind of electric candle low-voltage protection circuit structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203932982U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107221913A (en) * | 2017-06-19 | 2017-09-29 | 江苏理工学院 | A kind of low-power dissipation protection circuit based on Ni-MH battery |
-
2014
- 2014-01-24 CN CN201420048918.9U patent/CN203932982U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107221913A (en) * | 2017-06-19 | 2017-09-29 | 江苏理工学院 | A kind of low-power dissipation protection circuit based on Ni-MH battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141105 |