CN206697920U - A kind of anti-overcharge protection circuit of battery charger - Google Patents
A kind of anti-overcharge protection circuit of battery charger Download PDFInfo
- Publication number
- CN206697920U CN206697920U CN201720570928.2U CN201720570928U CN206697920U CN 206697920 U CN206697920 U CN 206697920U CN 201720570928 U CN201720570928 U CN 201720570928U CN 206697920 U CN206697920 U CN 206697920U
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- CN
- China
- Prior art keywords
- battery charger
- resistance
- triode
- controllable silicon
- protection 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
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a kind of anti-overcharge protection circuit of battery charger; the controllable silicon SCR of trickle charge indicating mechanism including gate pole G connection battery chargers; anode T1 connection battery chargers the output cathode C1, negative electrode T2 of the controllable silicon SCR connect battery charger output negative pole C2 with electric capacity C through resistance R3 successively；Also include triode Q1, triode Q2 and relay K, the base stage of the triode Q1 is connected to resistance R3 and electric capacity C common port, colelctor electrode is connected to the negative electrode T2 of controllable silicon SCR through resistance R2, emitter connecting triode Q2 base stage, the negative electrode T2 of coil connection controllable silicon SCR of the colelctor electrode of the triode Q2 through relay K, emitter stage connects battery charger output negative pole C2, normally-closed contact connection civil powers of the input B1 through relay K of the battery charger.Electric capacity is charged by the triggering of trickle charge indicating mechanism, delay, which disconnects charger, to be prevented from overcharging.
Description
Technical field
It the utility model is related to battery charger field, and in particular to a kind of anti-overcharge protection electricity of battery charger
Road.
Background technology
Increasingly exhausted and environmental pollution increasingly serious with fossil energy, battery truck is as a kind of green traffic work
Tool, with it is environmentally friendly, light, flexible the characteristics of popularize rapidly.Battery truck stores electric power with battery, passes through charging after power consumption
Device connection civil power is charged；Existing charger is generally charged using segmented, is the quick charge of high current first, then
Carrying out the trickle charge of low current is completely filled with battery,, can be right into overcharging state if disconnecting charger not in time
Battery causes to damage；Because the influence of temperature and battery newness degree to the charging interval is very big, existing battery fills
Electrical equipment is completed merely by indicator lamp instruction quick charge, can not be disconnected after the completion of trickle charge, most people is in evening
On go home after with charger to battery charge a whole night, when being gone out to second day just disconnect charger, overcharge for a long time sternly
Ghost image rings the service life of battery.
The content of the invention
The technical problems to be solved in the utility model is to provide a kind of anti-overcharge protection circuit of battery charger, can solve
Certainly existing battery charger can not be disconnected after the completion of trickle charge again, caused to overcharge battery for a long time, influenceed its use
The problem of life-span.
The utility model is achieved through the following technical solutions：
A kind of anti-overcharge protection circuit of battery charger, including the trickle charge of gate pole G connection battery chargers refer to
Show the controllable silicon SCR of mechanism, the anode T1 connection battery charger output cathode C1 of the controllable silicon SCR, negative electrode T2 is successively
Battery charger output negative pole C2 is connected with electric capacity C through resistance R3；Also include triode Q1, triode Q2 and relay K, institute
The base stage for stating triode Q1 is connected to resistance R3 and electric capacity C common port, and colelctor electrode is connected to the moon of controllable silicon SCR through resistance R2
Pole T2, emitter connecting triode Q2 base stage, coil connection controllable silicon of the colelctor electrode through relay K of the triode Q2
SCR negative electrode T2, emitter stage connection battery charger output negative pole C2, the input B1 of the battery charger is through relay
Device K normally-closed contact connection civil power.
Further scheme of the present utility model is to be also associated between the negative electrode T2 and resistance R3 of the controllable silicon SCR more
Road switching switch, the resistance of each branch road of the multi-channel switch are different.
Further scheme of the present utility model is, the both ends of the electric capacity C be parallel with by resistance R7 and switch SB series connection and
Into discharge paths.
Further scheme of the present utility model is connected between the battery charger output cathode C1 and output negative pole C2
It is connected to voltage-regulator diode V1.
Further scheme of the present utility model is that the coil both ends of the relay K are parallel with reverse diode V2.
Further scheme of the present utility model is negative electrode T2 and the battery charger output negative pole of the controllable silicon SCR
The branch road being in series by light emitting diode V3 and resistance R8 is also parallel between C2.
Further scheme of the present utility model is that the trickle charge indicating mechanism of the battery charger is indicator lamp.
The utility model compared with prior art the advantages of be：
First, controlled silicon conducting is triggered by trickle charge indicating mechanism, electric capacity is charged, when electric capacity passes through one section
Between saturation when, triode Q1 and triode Q2 conducting, relay K coils obtain it is electric, its normally-closed contact disconnect so that charger and city
Electric is separated, so as to prevent to accumulator super-charge, effectively extending the service life of battery；
2nd, the time in the charging interval, i.e. charger time delayed turn-off of electric capacity is adjusted by each branch road of different resistances, is adapted to
The temperature Change of Various Seasonal, and the battery that newness degree is different；
3rd, make electric capacity forced electric discharge by switching SB, the connection of charger and civil power can be recovered；
4th, voltage-regulator diode V1 ensures output voltage stabilization；
5th, light emitting diode V3 is used to indicate trickle charge state.
Brief description of the drawings
Fig. 1 is circuit diagram of the present utility model.
Embodiment
The anti-overcharge protection circuit of a kind of battery charger as shown in Figure 1, including gate pole G connection battery chargers
The controllable silicon SCR of one pin of trickle charge indicator lamp of green, the anode T1 connection battery chargers of the controllable silicon SCR
Output cathode C1, negative electrode T2 through parallel connection two branch roads connect battery charger output negative pole C2, wherein tie point by according to
Secondary series connection three tunnels switching switch, resistance R3 and electric capacity C composition, second route light emitting diode V3 and resistance R8 series connection and
Into；Voltage-regulator diode V1, the three tunnels switching are connected between the battery charger output cathode C1 and output negative pole C2
Three branch roads of switch are connected to the different resistance R4 of resistance, resistance R5, resistance R6；The both ends of the electric capacity C are simultaneously
It is associated with the discharge paths being in series by resistance R7 and switch SB；Also include triode Q1, triode Q2 and relay K, it is described
Triode Q1 base stage is connected to resistance R3 and electric capacity C common port, and colelctor electrode is connected to the negative electrode of controllable silicon SCR through resistance R2
T2, emitter connecting triode Q2 base stage, coil connection controllable silicon SCR of the colelctor electrode through relay K of the triode Q2
Negative electrode T2, emitter stage connection battery charger output negative pole C2, the coil both ends of the relay K are parallel with reverse two
Pole pipe V2, normally-closed contact connection civil powers of the input B1 through relay K of the battery charger.
When charger completes the quick charge to battery, its green trickle charge indicator lamp connects luminous, triggering
Controllable silicon SCR turns on, and regulation multi-channel switch connects the first via, and resistance R4 turns on resistance R3 to charge to electric capacity C, about 80 points
Clock is full of electric capacity C, and the resistance R5 on the second tunnel then needs about 100 minutes to be full of electric capacity C, and the resistance R6 on the 3rd tunnel needs about 120 points
Clock is full of electric capacity；When electric capacity C is full of, triode Q1 base potential rise, triode Q1 conductings, and then make triode Q2
Conducting, relay K coil obtain electric, disconnect normally-closed contact, i.e., charger input is electrically disconnected with city, realizes anti-overcharge guarantor
Shield, gate pole G is ineffective after being turned on due to controllable silicon SCR, although charger input is electrically disconnected with city, its output end is with storing
Battery connects, and can be powered by battery to controllable silicon SCR, relay K is always maintained at obtaining electricity condition, it is ensured that charger will not
Turn on again；When charger and battery depart from, or when manual trigger switch SB makes the electric capacity C discharge, triode Q1 cut-offs, after
And triode Q2 cut-offs, relay K dead electricity, charger input can be made to be electrically connected with city again.
Claims (7)
- A kind of 1. anti-overcharge protection circuit of battery charger, it is characterised in that：Include the tiny stream of gate pole G connection battery chargers The controllable silicon SCR of current charge indicating mechanism, the anode T1 connection battery charger output cathode C1 of the controllable silicon SCR are cloudy Pole T2 connects battery charger output negative pole C2 with electric capacity C through resistance R3 successively；Also include triode Q1, triode Q2 and after Electrical equipment K, the triode Q1 base stage are connected to resistance R3 and electric capacity C common port, and colelctor electrode is connected to controllable through resistance R2 Silicon SCR negative electrode T2, emitter connecting triode Q2 base stage, coil of the colelctor electrode through relay K of the triode Q2 connect Connect the negative electrode T2 of controllable silicon SCR, emitter stage connection battery charger output negative pole C2, the input of the battery charger Normally-closed contact connection civil powers of the B1 through relay K.
- A kind of 2. anti-overcharge protection circuit of battery charger as claimed in claim 1, it is characterised in that：The controllable silicon Multi-channel switch is also associated between SCR negative electrode T2 and resistance R3, the resistance of each branch road of the multi-channel switch is each Differ.
- A kind of 3. anti-overcharge protection circuit of battery charger as claimed in claim 1, it is characterised in that：The electric capacity C's Both ends are parallel with the discharge paths being in series by resistance R7 and switch SB.
- A kind of 4. anti-overcharge protection circuit of battery charger as claimed in claim 1, it is characterised in that：The battery fills Voltage-regulator diode V1 is connected between electrical equipment output cathode C1 and output negative pole C2.
- A kind of 5. anti-overcharge protection circuit of battery charger as claimed in claim 1, it is characterised in that：The relay K Coil both ends be parallel with reverse diode V2.
- A kind of 6. anti-overcharge protection circuit of battery charger as claimed in claim 1, it is characterised in that：The controllable silicon Also it is parallel between SCR negative electrode T2 and battery charger output negative pole C2 and is in series by light emitting diode V3 and resistance R8 Branch road.
- A kind of 7. anti-overcharge protection circuit of battery charger as claimed in claim 1, it is characterised in that：The battery fills The trickle charge indicating mechanism of electrical equipment is indicator lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720570928.2U CN206697920U (en) | 2017-05-22 | 2017-05-22 | A kind of anti-overcharge protection circuit of battery charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720570928.2U CN206697920U (en) | 2017-05-22 | 2017-05-22 | A kind of anti-overcharge protection circuit of battery charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206697920U true CN206697920U (en) | 2017-12-01 |
Family
ID=60448607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720570928.2U Expired - Fee Related CN206697920U (en) | 2017-05-22 | 2017-05-22 | A kind of anti-overcharge protection circuit of battery charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206697920U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113972638A (en) * | 2021-11-04 | 2022-01-25 | 江苏邦泰电气有限公司 | Outdoor isolating switch with reserve power supply for offsetting instant impact current |
-
2017
- 2017-05-22 CN CN201720570928.2U patent/CN206697920U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113972638A (en) * | 2021-11-04 | 2022-01-25 | 江苏邦泰电气有限公司 | Outdoor isolating switch with reserve power supply for offsetting instant impact current |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171201 Termination date: 20180522 |