CN107069672A - 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
- CN107069672A CN107069672A CN201710221008.4A CN201710221008A CN107069672A CN 107069672 A CN107069672 A CN 107069672A CN 201710221008 A CN201710221008 A CN 201710221008A CN 107069672 A CN107069672 A CN 107069672A
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- China
- Prior art keywords
- resistance
- triodes
- batteries
- pin
- battery
- 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.)
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Classifications
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- 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 batteries and BT2 batteries, the negative pole end series connection L1 inductance of the BT1 batteries, the normally-closed contacts of J1 1 are connected to the positive terminal of BT2 batteries, the negative pole end of the BT1 batteries is connected to 1 pin of IC1 photoelectrical couplers through R1 resistance, 2 pin of the IC1 photoelectrical couplers are connected between L1 inductance and the normally-closed contacts of J1 1, 4 pin of the IC1 photoelectrical couplers are connected to the positive terminal of BT2 batteries, 3 pin of the IC1 photoelectrical couplers are connected to D2 diode cathodes, one end of R6 resistance, D3 diode cathodes, one end of R8 resistance and the colelctor electrode of Q4 triodes；The circuit that the present invention can point out battery to be connected has the failure of overload or short circuit, and whole device is simple in construction, is easily installed debugging, serves protection battery, improves the effect of its service life, and helps to prevent the fire that automobile circuit triggers by short circuit.
Description
Technical field
The present invention relates to secondary battery protection circuit, and in particular to a kind of battery overload short circuit automatic power-off protection circuit.
Background technology
Automobile storage battery is the energy safeguard that can automobile normally run, and its life-span is relevant with usually charge and discharge electric equilibrium.Store
Battery will just have a strong impact on its service life in the case of long-time overdischarge, namely overload.Starter motor use time mistake
It is the main cause for causing battery to overload that length, line short, electrical equipment, which are damaged,.The consequence that especially line short is caused is the tightest
Weight, because main circuit is that fuse, therefore, line short are not installed in the requirement for meeting engine cranking motor starting current typically
Battery damage is not only caused, and is the major reason for causing automobile fire.
The content of the invention
In view of the shortcomings of the prior art, the invention provides a kind of battery overload short circuit automatic power-off protection circuit, energy
The circuit that enough prompting battery is connected has the failure of overload or short circuit.
To realize object above, 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 batteries and BT2 batteries, negative pole end series connection L1 inductance, the J1-1 of the BT1 batteries are normal
Closed contact is connected to the positive terminal of BT2 batteries, and the negative pole end of the BT1 batteries is connected to IC1 photoelectric couplings through R1 resistance
1 pin of device, 2 pin of the IC1 photoelectrical couplers are connected between L1 inductance and J1-1 normally-closed contacts, the IC1 photoelectric couplings
4 pin of device are connected to the positive terminal of BT2 batteries, and 3 pin of the IC1 photoelectrical couplers are connected to D2 diode cathodes, R6 electricity
One end of resistance, D3 diode cathodes, the colelctor electrode of one end of R8 resistance and Q4 triodes；The D2 diode cathodes are connected to R6
The other end of resistance, the R6 resistance through R7 resistance by being also connected to the base stages of Q5 triodes, institute while C4 capacity earths
R8 resistance other end ground connection is stated, the D3 diode cathodes are connected to the emitter stage of Q5 triodes, the current collection of the Q5 triodes
Pole is connected to the base stage of Q3 triodes by R9 resistance, and the colelctor electrode of the Q3 triodes is connected to the base stage of Q4 triodes, institute
The colelctor electrode for stating Q4 triodes is connected to base stage through R10 resistance；The emitter stage of the Q4 triodes is connected to Y1 buzzers；It is described
The positive terminal of BT2 batteries is connected to one end of J1 relays, and 4 pin of the IC1 photoelectrical couplers are connected on K1 switches, institute
Three tunnels of the K1 switch other ends point are stated, connect all the way RT1 temperature switches, R5 resistance, R4 resistance are connected to Y1 buzzers and is finally grounded,
Series connection R2 resistance, R3 resistance and the positive pole for being connected to D1 diodes, are connected to the emitter stage of Q1 triodes, the D1 all the way all the way
The negative pole of diode is also connected to the colelctor electrode of Q2 triodes while being connected to the other end of J1 relays；The Q2 triodes
Base stage be connected between R4 resistance and R5 resistance, the grounded emitter of the Q2 triodes, the base stage of the Q1 triodes connects
It is connected between R2 resistance and R3 resistance, the colelctor electrode of the Q1 triodes is connected on Y1 buzzers.
Preferably, the BT1 batteries and BT2 batteries are voltage 6V battery.
The invention provides a kind of battery overload short circuit automatic power-off protection circuit, it can point out what battery was connected
Circuit has the failure of overload or short circuit, and whole device is simple in construction, is easily installed debugging, serves protection battery, improve it
The effect of service life, and help to prevent the fire that automobile circuit triggers by short circuit.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is circuit theory diagrams of the invention.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Embodiment：
As shown in figure 1, a kind of battery overload short circuit automatic power-off protection circuit, including BT1 batteries and BT2 electric power storages
Pond, negative pole end series connection L1 inductance, the J1-1 normally-closed contacts of the BT1 batteries are connected to the positive terminal of BT2 batteries, described
The negative pole end of BT1 batteries is connected to 1 pin of IC1 photoelectrical couplers, the 2 pin connection of the IC1 photoelectrical couplers through R1 resistance
To between L1 inductance and J1-1 normally-closed contacts, 4 pin of the IC1 photoelectrical couplers are connected to the positive terminal of BT2 batteries, described
3 pin of IC1 photoelectrical couplers be connected to D2 diode cathodes, one end of R6 resistance, D3 diode cathodes, one end of R8 resistance and
The colelctor electrode of Q4 triodes；The D2 diode cathodes are connected to the other end of R6 resistance, and the R6 resistance is connect by C4 electric capacity
The base stage of Q5 triodes, the R8 resistance other end ground connection, the D3 diode cathodes are also connected to while ground through R7 resistance
The emitter stage of Q5 triodes is connected to, the colelctor electrode of the Q5 triodes is connected to the base stage of Q3 triodes, institute by R9 resistance
The colelctor electrode for stating Q3 triodes is connected to the base stage of Q4 triodes, and the colelctor electrode of the Q4 triodes is connected to base through R10 resistance
Pole；The emitter stage of the Q4 triodes is connected to Y1 buzzers；The positive terminal of the BT2 batteries is connected to the one of J1 relays
End, 4 pin of the IC1 photoelectrical couplers are connected on K1 switches, three tunnels of the K1 switches other end point, RT1 temperature of connecting all the way
Degree switch, R5 resistance, R4 resistance are connected to Y1 buzzers and are finally grounded, and series connection R2 resistance, R3 resistance and are connected to D1 bis- all the way
The positive pole of pole pipe, is connected to the emitter stage of Q1 triodes all the way, and the negative pole of the D1 diodes is connected to the another of J1 relays
The colelctor electrode of Q2 triodes is also connected to while end；The base stage of the Q2 triodes is connected between R4 resistance and R5 resistance,
The grounded emitter of the Q2 triodes, the base stage of the Q1 triodes is connected between R2 resistance and R3 resistance, the Q1 tri-
The colelctor electrode of pole pipe is connected on Y1 buzzers.
Preferably, the BT1 batteries and BT2 batteries are voltage 6V battery.
Circuit operation principle：The positive pole and negative pole of battery are connected on automobile power supply circuit first, when instantaneous vehicle is opened
When dynamic, starting current can be very big, and just lower negative voltage will be now produced at L1 inductance two ends, and upper cathode voltage connects through R1 resistance
The pin of IC1 photoelectrical couplers 2 is connected to, the about 2V voltages that L1 inductance two ends are produced make the luminous tube inside IC1 photoelectrical couplers light,
IC1 photoelectrical coupler triode ONs are triggered, the pin of IC1 photoelectrical couplers 4 is connected to the positive terminal of 6V batteries, makes IC1 photoelectricity
The pin of coupler 3 output 6V voltages make Q5 triode ONs, colelctor electrode output high level while charging through R6 resistance to C1 electric capacity
Make Q3 triode ONs through R9 resistance, Q4 triodes is in cut-off state, colelctor electrode cuts Q2 triodes without high level output
Only, J1 relays not adhesive, makes battery keep 12V output states.
After automobile normally starts, the time is very short, and the line powering load that battery is connected is normal load state, L1
Voltage produced by inductance two ends is disappeared quickly, IC1 photoelectrical coupler internal illumination pipes is not worked, and IC1 photoelectrical couplers are cut
Only, 3 pin Non voltage output, now C1 electric capacity it is charged will through D2 diode cathodes to negative pole to R8 resistance to discharge.
After occurring overload or short circuit because of some reasons in automobile line, produced at the L1 inductance two ends of internal storage battery
2V voltages make IC1 photoelectrical coupler internal illuminations pipe work, and the pin of IC1 photoelectrical couplers 3 exports 6V voltages through R6 resistance to electric capacity
C6 makes Q5 triode ONs while charging, colelctor electrode exports high level makes Q3 triode ONs, colelctor electrode output through R9 resistance
Low level makes Q4 transistor bases be in low level, and Q4 triodes cut-off, Q2 triodes cut-off, J1 relays do not work, J1-1
Normally-closed contact is kept closed.When automobile line keeps overload or short-circuit condition, the pin of IC1 photoelectrical couplers 3 is still defeated
Go out high level, C1 electric capacity is filled, now the charged pressure of C1 electric capacity cuts Q5 triodes higher than Q5 emitter voltages 0.5V or so
Only, colelctor electrode output low level ends Q3 triodes, and the high level of the pin of IC1 photoelectrical couplers 3 output is through R10 resistance to Q4 tri-
Pole pipe base stage, makes Q4 triode ONs, and emitter stage output high level is connected to the base stage of Q2 triodes through R4 resistance, makes the poles of Q2 tri-
Pipe is turned on, and J1 relays obtain electric work, make the normally opened contact adhesive of J1 relays, so that the normally-closed contact of J1 relays is disconnected,
Disconnect internal storage battery 6V batteries series circuit, the output so that 12V for disconnecting battery powers, the line for being connected battery
Road load power down, so that avoid circuit occurs fire because overload or short circuit make in circuit electric wire overheat.
After the 12V of battery powers power-off, now because of Q2 triode ONs after, colelctor electrode be in low level, be now
D1 diode forwards are turned on, and Q1 transistor bases voltage is less than emitter voltage, make Q1 triode ONs, and colelctor electrode output is high
Level is connected to Q2 transistor bases through R4 resistance makes Q2 triodes be in continuation conducting state, makes J1 relay holding work shapes
State, J1 relay normally open contacts keep attracting state, while remaining off the normally-closed contact of J1 relays, make battery
Without 12V voltage outputs.The high level that emitter stage is exported while Q4 triode ONs makes Y1 buzzers sound the alarm simultaneously
Sound, the circuit for pointing out battery to be connected has the failure of overload or short circuit.
RT1 temperature switches are connected with the positive pole of BT2 internal storage battery 6V batteries, when internal storage battery is because of some reason temperature
Degree exceedes after set temperature, and RT1 temperature switch internal switchings, 6V voltages are connected to the base stage of Q2 triodes through R5 resistance, made
Q2 triode ONs, make J1 relay adhesives, so that J1-1 normally-closed contacts are disconnected, so as to disconnect the 12V voltages of battery, Q2 tri-
Pole pipe conducting after, make D2 diode forwards turn on, make Q1 triode ONs, make Y1 buzzers sound the alarm sound while, make
Q2 triodes are tended to remain on, and J1 relays keep attracting state, and battery is kept without 12V voltage outputs.
After overload or short trouble exclusion, K1 switches, after making Q1 transistor emitters without 6V voltages, colelctor electrode are clicked
Without high level output, end Q2 triodes, J1 relays do not work, make J1-1 normally opened contact not adhesives, connect normally-closed contact
It is logical, battery 12V Voltage On states, so that 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
The present invention is described in detail, it will be understood by those within the art that：It still can be to foregoing each implementation
Technical scheme described in example is modified, or carries out equivalent substitution to which part technical characteristic；And these modification or
Replace, the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (2)
1. a kind of battery overload short circuit automatic power-off protection circuit, it is characterised in that including BT1 batteries and BT2 batteries,
Negative pole end series connection L1 inductance, the J1-1 normally-closed contacts of the BT1 batteries are connected to the positive terminal of BT2 batteries, and the BT1 stores
The negative pole end of battery is connected to 1 pin of IC1 photoelectrical couplers through R1 resistance, and 2 pin of the IC1 photoelectrical couplers are connected to L1 electricity
Between sense and J1-1 normally-closed contacts, 4 pin of the IC1 photoelectrical couplers are connected to the positive terminal of BT2 batteries, the IC1 light
3 pin of electric coupler are connected to D2 diode cathodes, one end of R6 resistance, D3 diode cathodes, one end of R8 resistance and Q4 tri-
The colelctor electrode of pole pipe；The D2 diode cathodes are connected to the other end of R6 resistance, and the R6 resistance passes through C4 capacity earths
The base stage of Q5 triodes, the R8 resistance other end ground connection, the D3 diode cathodes connection are also connected to through R7 resistance simultaneously
To the emitter stage of Q5 triodes, the colelctor electrode of the Q5 triodes is connected to the base stage of Q3 triodes, the Q3 by R9 resistance
The colelctor electrode of triode is connected to the base stage of Q4 triodes, and the colelctor electrode of the Q4 triodes is connected to base stage through R10 resistance；Institute
The emitter stage for stating Q4 triodes is connected to Y1 buzzers；The positive terminal of the BT2 batteries is connected to one end of J1 relays, institute
4 pin for stating IC1 photoelectrical couplers are connected on K1 switches, and three tunnels of the K1 switches other end point, RT1 temperature of connecting all the way is opened
Pass, R5 resistance, R4 resistance are connected to Y1 buzzers and are finally grounded, and connect R2 resistance, R3 resistance and is connected to D1 diodes all the way
Positive pole, the emitter stage of Q1 triodes is connected to all the way, the negative pole of the D1 diodes is connected to the other end of J1 relays
The colelctor electrode of Q2 triodes is also connected to simultaneously；The base stage of the Q2 triodes is connected between R4 resistance and R5 resistance, described
The grounded emitter of Q2 triodes, the base stage of the Q1 triodes is connected between R2 resistance and R3 resistance, the Q1 triodes
Colelctor electrode be connected on Y1 buzzers.
2. battery overload short circuit automatic power-off protection circuit as claimed in claim 1, it is characterised in that the BT1 electric power storages
Pond and BT2 batteries are voltage 6V battery.
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 true CN107069672A (en) | 2017-08-18 |
| CN107069672B CN107069672B (en) | 2019-03-15 |
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| 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 |
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| CN (1) | CN107069672B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112186856A (en) * | 2020-09-30 | 2021-01-05 | 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 |
| US11600992B2 (en) * | 2018-12-06 | 2023-03-07 | Contemporary Amperex Technology Co., Limited | Electric protection circuit |
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| 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 |
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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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11600992B2 (en) * | 2018-12-06 | 2023-03-07 | Contemporary Amperex Technology Co., Limited | Electric protection circuit |
| CN112186856A (en) * | 2020-09-30 | 2021-01-05 | 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 |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN107069672B (en) | 2019-03-15 |
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