CN107069672B - A kind of battery overload short circuit automatic power-off protection circuit - Google Patents
A kind of battery overload short circuit automatic power-off protection circuit Download PDFInfo
- Publication number
- CN107069672B CN107069672B CN201710221008.4A CN201710221008A CN107069672B CN 107069672 B CN107069672 B CN 107069672B CN 201710221008 A CN201710221008 A CN 201710221008A CN 107069672 B CN107069672 B CN 107069672B
- Authority
- CN
- China
- Prior art keywords
- battery
- resistance
- triode
- collector
- photoelectrical coupler
- 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.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
- H02H3/042—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned combined with means for locating the fault
Abstract
The present invention provides a kind of battery overload short circuit automatic power-off protection circuit, it is related to secondary battery protection circuit, including BT1 battery and BT2 battery, the negative pole end series connection L1 inductance of the BT1 battery, J1-1 normally-closed contact is connected to the positive terminal of BT2 battery, the negative pole end of the BT1 battery is connected to 1 foot of IC1 photoelectrical coupler through R1 resistance, 2 feet of the IC1 photoelectrical coupler are connected between L1 inductance and J1-1 normally-closed contact, 4 feet of the IC1 photoelectrical coupler are connected to the positive terminal of BT2 battery, 3 feet of the IC1 photoelectrical coupler are connected to D2 diode cathode, one end of R6 resistance, D3 diode cathode, one end of R8 resistance and the collector of Q4 triode；The route that the present invention can prompt battery to be connected has the failure of overload or short circuit, and whole device structure is simple, is easily installed debugging, plays protection battery, improves the effect of its service life, and facilitate the fire for preventing automobile circuit from causing by short circuit.
Description
Technical field
The present invention relates to secondary battery protection circuits, and in particular to a kind of battery overload short circuit automatic power-off protection circuit.
Background technique
Automobile storage battery is the energy safeguard that can automobile operate normally, and the service life is related with usually charge and discharge electric equilibrium.It stores
Battery just will seriously affect its service life in the case where long-time overdischarge namely overload.Starter motor uses time mistake
Length, line short, electric appliance damage are the main reason for causing battery to overload.Especially consequence caused by line short is the tightest
Weight, since main circuit is to meet the requirement of engine cranking motor starting current not install fuse generally, line short
Battery damage is not only caused, but also is the major reason for causing automobile fire.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of battery overload short circuit automatic power-off protection circuit, energy
The route that enough prompt battery is connected has the failure of overload or short circuit.
In order to achieve the above object, the present invention is achieved by the following technical programs: a kind of battery overload short circuit is automatic
Power-off protecting circuit, including BT1 battery and BT2 battery, negative pole end series connection L1 inductance, the J1-1 of the BT1 battery are normal
Closed contact is connected to the positive terminal of BT2 battery, and the negative pole end of the BT1 battery is connected to IC1 photoelectric coupling through R1 resistance
2 feet of 1 foot of device, the IC1 photoelectrical coupler are connected between L1 inductance and J1-1 normally-closed contact, the IC1 photoelectric coupling
4 feet of device are connected to the positive terminal of BT2 battery, and 3 feet of the IC1 photoelectrical coupler are connected to D2 diode cathode, R6 electricity
One end of resistance, D3 diode cathode, one end of R8 resistance and Q4 triode collector；The D2 diode cathode is connected to R6
The other end of resistance, the R6 resistance through R7 resistance by being also connected to the base stage of Q5 triode, institute while C1 capacity earth
R8 resistance other end ground connection is stated, the D3 diode cathode is connected to the emitter of Q5 triode, the current collection of the Q5 triode
Pole is connected to the base stage of Q3 triode by R9 resistance, and the collector of the Q3 triode is connected to the base stage of Q4 triode, institute
The collector for stating Q4 triode is connected to base stage through R10 resistance；The emitter of the Q4 triode is connected to Y1 buzzer；It is described
The positive terminal of BT2 battery is connected to one end of J1 relay, and 4 feet of the IC1 photoelectrical coupler are connected on K1 switch, institute
Three tunnels of the K1 switch other end point are stated, connect all the way RT1 temperature switch, R5 resistance, R4 resistance are connected to Y1 buzzer and are finally grounded,
Series connection R2 resistance, R3 resistance and the anode for being connected to D1 diode all the way, are connected to the emitter of Q1 triode, the D1 all the way
The cathode of diode is also connected to the collector of Q2 triode while being connected to the other end of J1 relay；The Q2 triode
Base stage be connected between R4 resistance and R5 resistance, the base stage of the emitter of Q2 triode ground connection, the Q1 triode connects
It is connected between R2 resistance and R3 resistance, the collector of the Q1 triode is connected on Y1 buzzer.
Preferably, the BT1 battery and BT2 battery are the battery of voltage 6V.
The present invention provides a kind of battery overload short circuit automatic power-off protection circuits, battery can be prompted to be connected
Route has the failure of overload or short circuit, and whole device structure is simple, is easily installed debugging, plays protection battery, improves it
The effect of service life, and facilitate the fire for preventing automobile circuit from causing by short circuit.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is circuit diagram of the invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Embodiment:
As shown in Figure 1, a kind of battery overload short circuit automatic power-off protection circuit, including BT1 battery and BT2 electric power storage
Pond, negative pole end series connection L1 inductance, the J1-1 normally-closed contact of the BT1 battery are connected to the positive terminal of BT2 battery, described
The negative pole end of BT1 battery is connected to 1 foot of IC1 photoelectrical coupler, the 2 feet connection of the IC1 photoelectrical coupler through R1 resistance
To between L1 inductance and J1-1 normally-closed contact, 4 feet of the IC1 photoelectrical coupler are connected to the positive terminal of BT2 battery, described
3 feet of IC1 photoelectrical coupler be connected to D2 diode cathode, one end of R6 resistance, D3 diode cathode, R8 resistance one end and
The collector of Q4 triode；The D2 diode cathode is connected to the other end of R6 resistance, and the R6 resistance is connect by C1 capacitor
The base stage of Q5 triode, the R8 resistance other end ground connection, the D3 diode cathode are also connected to while ground through R7 resistance
It is connected to the emitter of Q5 triode, the collector of the Q5 triode is connected to the base stage of Q3 triode, institute by R9 resistance
The collector for stating Q3 triode is connected to the base stage of Q4 triode, and the collector of the Q4 triode is connected to base through R10 resistance
Pole；The emitter of the Q4 triode is connected to Y1 buzzer；The positive terminal of the BT2 battery is connected to the one of J1 relay
End, 4 feet of the IC1 photoelectrical coupler are connected on K1 switch, three tunnels of the K1 switch other end point, RT1 temperature of connecting all the way
Degree switch, R5 resistance, R4 resistance are connected to Y1 buzzer and are finally grounded, and series connection R2 resistance, R3 resistance and are connected to D1 bis- all the way
The anode of pole pipe, is connected to the emitter of Q1 triode all the way, and the cathode of the D1 diode is connected to the another of J1 relay
The collector of Q2 triode is also connected to while end；The base stage of the Q2 triode is connected between R4 resistance and R5 resistance,
The emitter of the Q2 triode is grounded, and the base stage of the Q1 triode is connected between R2 resistance and R3 resistance, the Q1 tri-
The collector of pole pipe is connected on Y1 buzzer.
Preferably, the BT1 battery and BT2 battery are the battery of voltage 6V.
Circuit operation principle: the anode and cathode of battery are connected on automobile power supply circuit first, when instantaneous vehicle opens
When dynamic, starting current can be very big, and at this time by negative voltage just lower on L1 inductance both ends generate, upper cathode voltage connects through R1 resistance
It is connected to 2 foot of IC1 photoelectrical coupler, the about 2V voltage that L1 inductance both ends generate makes the luminous tube inside IC1 photoelectrical coupler shine,
IC1 photoelectrical coupler triode ON is triggered, 4 foot of IC1 photoelectrical coupler is connected to the positive terminal of 6V battery, makes IC1 photoelectricity
3 foot of coupler export 6V voltage through R6 resistance to C1 capacitor charging while make Q5 triode ON, collector exports high level
Make Q3 triode ON through R9 resistance, Q4 triode is made to be in off state, collector cuts Q2 triode without high level output
Only, J1 relay is not attracted, and battery is made to keep 12V output state.
After automobile normally starts, the time is very short, and the line powering load that battery is connected is normal load state, L1
Voltage caused by inductance both ends disappears quickly, and IC1 photoelectrical coupler internal illumination pipe is made not work, and IC1 photoelectrical coupler is cut
Only, 3 foot Non voltage output, at this time C1 capacitor it is charged will through D2 diode cathode to cathode to R8 resistance to discharge.
After overload or short circuit occurs for some reason in automobile line, generated at the L1 inductance both ends of internal storage battery
2V voltage makes IC1 photoelectrical coupler internal illumination pipe work, and 3 foot of IC1 photoelectrical coupler exports 6V voltage through R6 resistance to capacitor
C6 makes Q5 triode ON while charging, collector, which exports high level, makes Q3 triode ON, collector output through R9 resistance
Low level makes Q4 transistor base be in low level, the cut-off of Q4 triode, and Q2 triode ends, and J1 relay does not work, J1-1
Normally-closed contact is kept closed.When automobile line keeps overload or short-circuit condition, 3 foot of IC1 photoelectrical coupler is still defeated
High level out, C1 capacitor are filled, and the charged pressure of C1 capacitor is higher than Q5 emitter voltage 0.5V or so at this time, cut Q5 triode
Only, collector output low level ends Q3 triode, and the high level of 3 foot of IC1 photoelectrical coupler output is through R10 resistance to Q4 tri-
Pole pipe base stage, makes Q4 triode ON, and emitter output high level is connected to the base stage of Q2 triode through R4 resistance, makes tri- pole Q2
Pipe conducting, J1 relay work once electrified is attracted the normally opened contact of J1 relay, so that the normally-closed contact of J1 relay is disconnected,
Internal storage battery 6V battery series circuit is disconnected, thus disconnect the 12V of battery for electricity output, the line for connecting battery
Road load power down, so as to avoid route because overload or short circuit make that fire occurs due to electric wire overheats in route.
When battery 12V power power-off after, at this time because of Q2 triode ON after, collector is in low level, is at this time
The conducting of D1 diode forward makes Q1 transistor base voltage lower than emitter voltage, makes Q1 triode ON, and collector output is high
Level, which is connected to Q2 transistor base through R4 resistance, makes Q2 triode be in continuation on state, and J1 relay is made to keep work shape
State, J1 relay normally open contact keeps attracting state, while remains off the normally-closed contact of J1 relay, makes battery
Without 12V voltage output.The high level that emitter exports while Q4 triode ON makes Y1 buzzer sound the alarm simultaneously
Sound, the route for prompting battery to be connected have the failure of overload or short circuit.
It is connected with RT1 temperature switch in the anode of BT2 internal storage battery 6V battery, when internal storage battery is warm for some reason
More than after set temperature, RT1 temperature switch internal switching, 6V voltage is connected to the base stage of Q2 triode through R5 resistance, makes degree
Q2 triode ON is attracted J1 relay, so that J1-1 normally-closed contact is disconnected, to disconnect the 12V voltage of battery, Q2 tri-
After pole pipe conducting, D2 diode forward is connected, makes Q1 triode ON, while so that Y1 buzzer is sounded an alarm sound, makes
Q2 triode tends to remain on, and J1 relay keeps attracting state, and battery is kept without 12V voltage output.
When overload or short trouble exclude after, click K1 switch, make Q1 transistor emitter without 6V voltage after, collector
Without high level output, end Q2 triode, J1 relay does not work, is attracted J1-1 normally opened contact not, connects normally-closed contact
It is logical, battery 12V Voltage On state, to make battery normal power supply.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (2)
1. a kind of battery overload short circuit automatic power-off protection circuit, which is characterized in that including BT1 battery and BT2 battery,
Negative pole end series connection L1 inductance, the J1-1 normally-closed contact of the BT1 battery are connected to the positive terminal of BT2 battery, and the BT1 stores
The negative pole end of battery is connected to 1 foot of IC1 photoelectrical coupler through R1 resistance, and 2 feet of the IC1 photoelectrical coupler are connected to L1 electricity
Between sense and J1-1 normally-closed contact, 4 feet of the IC1 photoelectrical coupler are connected to the positive terminal of BT2 battery, the IC1 light
3 feet of electric coupler are connected to D2 diode cathode, one end of R6 resistance, D3 diode cathode, one end of R8 resistance and Q4 tri-
The collector of pole pipe；The D2 diode cathode is connected to the other end of R6 resistance, and the R6 resistance passes through C1 capacity earth
The base stage of Q5 triode, the R8 resistance other end ground connection, the D3 diode cathode connection are also connected to through R7 resistance simultaneously
Collector to the emitter of Q5 triode, the Q5 triode is connected to the base stage of Q3 triode, the Q3 by R9 resistance
The collector of triode is connected to the base stage of Q4 triode, and the collector of the Q4 triode is connected to base stage through R10 resistance；Institute
The emitter for stating Q4 triode is connected to Y1 buzzer；The positive terminal of the BT2 battery is connected to one end of J1 relay, institute
4 feet for stating IC1 photoelectrical coupler are connected on K1 switch, and three tunnels of the K1 switch other end point, RT1 temperature of connecting all the way is opened
Pass, R5 resistance, R4 resistance are connected to Y1 buzzer and are finally grounded, and R2 resistance of connecting all the way and is connected to D1 diode at R3 resistance
Anode, be connected to the emitter of Q1 triode all the way, the cathode of the D1 diode is connected to the other end of J1 relay
It is also connected to the collector of Q2 triode simultaneously；The base stage of the Q2 triode is connected between R4 resistance and R5 resistance, described
The emitter of Q2 triode is grounded, and the base stage of the Q1 triode is connected between R2 resistance and R3 resistance, the Q1 triode
Collector be connected on Y1 buzzer, the emitter of Q3 triode ground connection.
2. battery overload short circuit automatic power-off protection circuit as described in claim 1, which is characterized in that the BT1 electric power storage
Pond and BT2 battery are the battery of voltage 6V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710221008.4A CN107069672B (en) | 2017-04-06 | 2017-04-06 | A kind of battery overload short circuit automatic power-off protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710221008.4A CN107069672B (en) | 2017-04-06 | 2017-04-06 | A kind of battery overload short circuit automatic power-off protection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107069672A CN107069672A (en) | 2017-08-18 |
| CN107069672B true CN107069672B (en) | 2019-03-15 |
Family
ID=59601660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710221008.4A Active CN107069672B (en) | 2017-04-06 | 2017-04-06 | A kind of battery overload short circuit automatic power-off protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107069672B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110970961B (en) * | 2018-12-06 | 2021-06-08 | 宁德时代新能源科技股份有限公司 | Power consumption protection circuit |
| CN112186856B (en) * | 2020-09-30 | 2022-02-22 | 徐州徐工挖掘机械有限公司 | Control system and method for preventing fire caused by overload of battery wire |
| CN112710938A (en) * | 2020-12-15 | 2021-04-27 | 郑州嘉晨电器有限公司 | Overload judgment method for triode inductive load circuit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202749883U (en) * | 2012-08-24 | 2013-02-20 | 刘举柱 | Charger with alarm function |
| WO2014037787A2 (en) * | 2012-09-07 | 2014-03-13 | Toyota Jidosha Kabushiki Kaisha | Electric vehicle |
| CN104578353A (en) * | 2013-10-28 | 2015-04-29 | 成都市科虹电子有限公司 | Battery charger for preventing overload and automatic power off |
| CN104883079A (en) * | 2014-11-26 | 2015-09-02 | 成都冠深科技有限公司 | Wide-pulse trigger type power supply automatic switching system with overvoltage and overcurrent protection |
| CN106787060A (en) * | 2017-03-22 | 2017-05-31 | 成都万家健康管理股份有限公司 | The battery of charging circuit can be automatically cut off |
-
2017
- 2017-04-06 CN CN201710221008.4A patent/CN107069672B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202749883U (en) * | 2012-08-24 | 2013-02-20 | 刘举柱 | Charger with alarm function |
| WO2014037787A2 (en) * | 2012-09-07 | 2014-03-13 | Toyota Jidosha Kabushiki Kaisha | Electric vehicle |
| CN104578353A (en) * | 2013-10-28 | 2015-04-29 | 成都市科虹电子有限公司 | Battery charger for preventing overload and automatic power off |
| CN104883079A (en) * | 2014-11-26 | 2015-09-02 | 成都冠深科技有限公司 | Wide-pulse trigger type power supply automatic switching system with overvoltage and overcurrent protection |
| CN106787060A (en) * | 2017-03-22 | 2017-05-31 | 成都万家健康管理股份有限公司 | The battery of charging circuit can be automatically cut off |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107069672A (en) | 2017-08-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104218540B (en) | Electronic cigarette battery reverse protection device and method | |
| CN107069672B (en) | A kind of battery overload short circuit automatic power-off protection circuit | |
| CN101888114A (en) | Multifunctional power supply of vehicular automotive electronic device | |
| CN110797718A (en) | Earth leakage protection plug with ground wire intelligence break-make and ground wire live detection | |
| CN201813158U (en) | Circuit for charging battery jar and preventing anode and cathode from reverse connection | |
| CN207968054U (en) | A kind of automobile starting storage battery | |
| CN210120416U (en) | Battery case electrified warning protection circuit | |
| CN100593274C (en) | A close loop protection circuit for middle voltage breaker | |
| CN102182607B (en) | Safe starting controller | |
| CN206947935U (en) | A kind of battery overload short circuit automatic power-off protection circuit | |
| CN202183530U (en) | Electric leakage protection plug with alarming device | |
| CN208581079U (en) | A kind of anti-reverse battery protection circuit of solar-electricity source converter | |
| CN104065043B (en) | Battery under-voltage protection and display circuit | |
| CN103364688A (en) | Three-jack socket electric leakage detection circuit | |
| CN204118786U (en) | Storage battery charge protection device | |
| CN202091087U (en) | Safety start controller | |
| CN105587420B (en) | Diesel engine starting and protection controller | |
| CN208461534U (en) | A kind of ship lamps and lanterns emergency set | |
| CN209088574U (en) | A kind of internal/external power switching circuit | |
| CN203368008U (en) | Solar fan circuit with function of charge and discharge protection | |
| CN205901702U (en) | Solid -state switch circuit of high voltage direct current double - circuit interlocking | |
| CN203928423U (en) | The high-power safe electric water heater of photovoltaic DC 60V | |
| CN101235787A (en) | Motorcycle power supply switch flameout circuit | |
| CN107061097B (en) | A kind of sintering melting welding of automobile starting switch contact detect automatically protects circuit | |
| CN209748264U (en) | Remote monitoring communication device based on mobile network power utilization safety |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |