CN1075834A - Protection unit of short circuit of accumulator - Google Patents
Protection unit of short circuit of accumulator Download PDFInfo
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- CN1075834A CN1075834A CN 93103938 CN93103938A CN1075834A CN 1075834 A CN1075834 A CN 1075834A CN 93103938 CN93103938 CN 93103938 CN 93103938 A CN93103938 A CN 93103938A CN 1075834 A CN1075834 A CN 1075834A
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- resistance
- relay
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- triode
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The protection unit of short circuit of accumulator that constitutes by energy storage relay and current limliting electronic switch that the present invention proposes; fundamentally solved in the storage battery power supply loop and controlled problem of pressure drop; its static consumption stream is less than 10mA; the switch pressure drop is less than 20mV; aspect such as charging performance and maximum output current all represents a significant improvement, and the specification requirement that the essential safe type circuit that makes the storage battery maximum output energy meet the GB3836.4-83 defined is exported is also satisfied practical requirement.The all kinds storage battery that the present invention is suitable for that mine, oil, chemical industry etc. are inflammable, use in the explosive environments is particularly suitable for the coal mine's cap-lamp power supply.
Description
The present invention relates to a kind of protection unit of short circuit of accumulator, be fit to be used in the safety-type DC power supply that contains all kinds of mine lamps and instrument in the explosive mixture environment.
The internal resistance of storage battery is minimum, and short circuit current can reach tens amperes, does not generally allow directly to contain at mine etc. to use in the explosive mixture environment, to avoid danger such as gas and flammable gas explosion.
There are shortcomings such as efficient is low, abominableization of load characteristic in the current-limiting resistance method that tradition adopts.My utility model granted patent (90217599.8) has adopted electronic switch control short circuit current, but owing on the storage battery power supply circuit, have the pressure drop of electronic switch, thereby not very very good.
The objective of the invention is to make the energy output of all kinds of storage batterys under load short circuits moment or overload situations to obtain restriction, and reduce the switch pressure drop and flow with static consumption, improve charging performance, make it to meet the specification requirement of the essential safe type circuit energy output of GB3836.4-83 defined, unlikely generation be enough to the to ignite electric spark of explosive mixture gas.
The protection unit of short circuit of accumulator of the present invention's design is made of energy storage relay circuit and current limliting electronic switch.
The energy storage relay circuit is by two triode T
1, T
2, a capacitor C
1, three resistance R
1, R
2, R
5Constitute with a relay J.The annexation of circuit is that relay J is passed through resistance R
1Connect positive source, by triode T
1Collector and emitter connect power cathode; Electrochemical capacitor C
1Positive relay termination J and resistance R
1, C
1Negative terminal connect power cathode; T
1Base stage and T
2Collector electrode link to each other, and pass through resistance R
2With relay J, R
1And C
1Link to each other; T
2Emitter link to each other with power cathode; T
2Base stage and resistance R
5Link to each other resistance R
5The other end be the control input end of energy storage relay circuit; The normally closed contact j of relay J is connected in series in the loop of power supply and load.
The current limliting electronic switch is by a triode T
3, a diode D, a capacitor C
2With three resistance R
3, R
4, R
7Constitute.The annexation of circuit is triode T
3Emitter and relay normally closed contact j, resistance R
3Link to each other with the output loading end; T
3Collector electrode pass through resistance R
7Connect power cathode, T
3Collector electrode be the output of current limliting electronic switch, link to each other with the control input end of energy storage relay circuit; T
3Emitter and base stage between electrochemical capacitor C in parallel
2, T
3Base stage pass through resistance R
4Connect fixed condenser, fixed condenser is by diode D and resistance R
6Series connection constitutes; The positive pole of diode D links to each other with positive source, resistance R
6Link to each other the two ends parallel resistance R of relay normally closed contact j with power cathode
3
Protective device and storage battery are connected in parallel, and the normally closed contact j of battery feed process energy storage relay is to electric.The protective device circuit can be the substance circuit, also can be that dual circuit series connection is used.The former can obtain the performance of essential safe type energy output, and the latter has increased coefficient of safety, meets the requirement of GB3836.4-83 about the essential safe type circuit fully.
The polarity of the triode that the present invention adopts, T
1, T
2Be the NPN type, T
3It is positive-negative-positive.As electric power polarity being inverted corresponding T
1, T
2Can use instead and be positive-negative-positive, T
3Use type instead for NPN.The material of the triode that the present invention adopts can be a silicone tube, also can be germanium tube.
The protection unit of short circuit of accumulator that constitutes by energy storage relay and current limliting electronic switch that the present invention proposes; fundamentally solved in the storage battery power supply loop and controlled problem of pressure drop; static consumption stream of the present invention is less than 10mA; the switch pressure drop is less than 20mV; aspect such as charging performance and maximum output current all represents a significant improvement, and the specification requirement that the essential safe type circuit that makes the storage battery maximum output energy meet the GB3836.4-83 defined is exported is also satisfied practical requirement.The all kinds storage battery that the present invention is suitable for that mine, oil, chemical industry etc. are inflammable, use in the explosive environments is particularly suitable for the coal mine's cap-lamp power supply.
Fig. 1. the schematic diagram of protection unit of short circuit of accumulator.
The invention will be further described with embodiment below in conjunction with accompanying drawing:
The protection unit of short circuit of accumulator of the present invention's design is made of energy storage relay circuit and current limliting electronic switch, as shown in Figure 1.Triode T
1And T
2Select 9013 type positive-negative-positive plastic packaging silicone tubes for use, T
3Select 9012 shapes envelope silicone tube for use, relay J adopts small low-voltage sealed relay, C
1And C
2Be low withstand voltage electrolytic capacitor, D is a general-purpose diode, R
1～R
7Be 1/4 watt of fixed carbon resister.
The energy storage relay circuit is by two triode T
1, T
2, a capacitor C
1, three resistance R
1, R
2, R
5Constitute with a relay J.The annexation of circuit is that relay J is passed through resistance R
1Connect positive source, by triode T
1Collector and emitter connect power cathode; Electrochemical capacitor C
1Positive relay termination J and resistance R
1, C
1Negative terminal connect power cathode; T
1Base stage and T
2Collector electrode link to each other, and pass through resistance R
2With relay J, R
1And C
1Link to each other; T
2Emitter link to each other with power cathode; T
2Base stage and resistance R
5Link to each other resistance R
5The other end be the control input end of energy storage relay circuit; The normally closed contact j of relay J is connected in series in the loop of power supply and load.
The current limliting electronic switch is by a triode T
3, a diode D, a capacitor C
2With three resistance R
3, R
4, R
7Constitute.The annexation of circuit is triode T
3Emitter and relay normally closed contact j, resistance R
3Link to each other with the output loading end; T
3Collector electrode pass through resistance R
7Connect power cathode, T
3Collector electrode be the output of current limliting electronic switch, link to each other with the control input end of energy storage relay circuit; T
3Emitter and base stage between electrochemical capacitor C in parallel
2, T
3Base stage pass through resistance R
4Connect fixed condenser, fixed condenser is by diode D and resistance R
6Series connection constitutes; The positive pole of diode D links to each other with positive source, resistance R
6Link to each other the two ends parallel resistance R of relay normally closed contact j with power cathode
3
Protective device and storage battery are connected in parallel, and the normally closed contact j of battery feed process energy storage relay is to electric.The protective device circuit can be the substance circuit, also can be that dual circuit is in series.The former can obtain the performance of essential safe type energy output, and the latter has increased coefficient of safety, meets the requirement of GB3836.4-83 about the essential safe type circuit fully.
The polarity of the triode that the present invention adopts, T
1, T
2Be the NPN type, T
3It is positive-negative-positive.As electric power polarity being inverted corresponding T
1, T
2Can use instead and be positive-negative-positive, T
3Use type instead for NPN.The material of the triode that the present invention adopts can be a silicone tube, also can be germanium tube.
The operation principle of this protection unit of short circuit of accumulator is described below by operating state:
(1) zero load: T
3In conducting state, T
3Collector electrode is output as high potential, passes through resistance R
5Control energy storage relay circuit makes triode T
2Saturation conduction, triode T
1End, relay J remains on off position, capacitor C
1In charged state.The normally closed contact j of relay J remains closed, and battery feed powers to the load through normally closed contact j.
(2) normally light a lamp: its cold-state resistance is very little of short circuit during the bulb starting, bulb starting moment capacitor C
2Both end voltage can not be suddenlyd change, and makes triode T
3Continue conducting in very short time, the lighting current of power supply output simultaneously increases rapidly and to the cold silk heating of bulb, sets up voltage at the filament two ends, and this voltage makes T
3Keep conducting and make in the circuit each triode operating state maintain state (1) constant.
(3) load short circuits: circuit output voltage moment is O, triode T
3End T
3Collector electrode is output as electronegative potential, passes through resistance R
5Control energy storage relay circuit makes triode T
2End triode T
1Saturation conduction, capacitor C
1Discharge makes relay J moment conducting, and relay normally closed contact j moment disconnects, and power supply passes through resistance R
1To the relay J supplementary power, make J keep adhesive, its normally closed contact j keeps off-state, by resistance R
3Restriction power supply output energy makes this energy shortage damp that ignites, energy storage capacitor C
1Recover charged state.
(4) load short circuits disappears, and revert to zero load: power supply passes through resistance R
3Make T
3Collector electrode is output as high potential, passes through resistance R
5Control energy storage relay circuit discharges J, contact j closure, and circuit state returns to state (1).
(5) load overload: along with load current increases, the contact voltage drop at relay tip j two ends increases, and makes T
3Base bias current reduce T
3Collector electrode output is fallen to electronegative potential by high potential, when overload current occurring greater than maximum permission output current, and T
3Collector electrode output electronegative potential passes through resistance R
5Control energy storage relay circuit makes triode T
2End triode T
1Saturation conduction, relay J is passed through resistance R
1Obtain enough attract currents, normally closed contact j disconnects, by resistance R
3Restriction electric current output energy makes this energy shortage damp that ignites.Before the load overload is not removed, because the load resistance is very little, resistance R
3With the voltage ratio deficiency of load so that T
3Conducting is so circuit state remains unchanged.
(6) the load overload disappears, and reverts to zero load: the same state of circuit state (4).
(7) charge in batteries, the same state of circuit state (1).
The test performance index such as the following table of this device:
Claims (3)
1, a kind of battery short circuit protective device is characterized in that:
Constitute by energy storage relay circuit and current limliting electronic switch;
The energy storage relay circuit is by two triode T
1, T
2, a capacitor C
1, three resistance R
1, R
2, R
5Constitute with a relay J; The annexation of circuit is that relay J is passed through resistance R
1Connect positive source, by triode T
1Collector and emitter connect power cathode; Electrochemical capacitor C
1Positive relay termination J and resistance R
1, C
1Negative terminal connect power cathode; T
1Base stage and T
2Collector electrode link to each other, and pass through resistance R
2With relay J, R
1And C
1Link to each other; T
2Emitter link to each other with power cathode; T
2Base stage and resistance R
5Link to each other resistance R
5The other end be the control input end of energy storage relay circuit; The normally closed contact j of relay J is connected in series in the loop of power supply and load;
The current limliting electronic switch is by a triode T
3, a diode D, a capacitor C
2With three resistance R
3, R
4, R
7Constitute; The annexation of circuit is triode T
3Emitter and relay normally closed contact j, resistance R
3Link to each other with the output loading end; T
3Collector electrode pass through resistance R
7Connect power cathode, T
3Collector electrode be the output of current limliting electronic switch, link to each other with the control input end of energy storage relay circuit; T
3Emitter and base stage between electrochemical capacitor C in parallel
2, T
3Base stage pass through resistance R
4Connect fixed condenser, fixed condenser is by diode D and resistance R
6Series connection constitutes; The positive pole of diode D links to each other with positive source, resistance R
6Link to each other the two ends parallel resistance R of relay normally closed contact j with power cathode
3
Protective device and storage battery are connected in parallel, and the normally closed contact j of battery feed process energy storage relay is to electric.
2, protection unit of short circuit of accumulator as claimed in claim 1 is characterized in that being in series by the double protecting device circuit.
3, as claim 1 and 2 described protection unit of short circuit of accumulator, it is characterized in that electric power polarity is inverted after, triode can be silicone tube or germanium tube, also can be NPN type or positive-negative-positive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93103938 CN1075834A (en) | 1993-04-02 | 1993-04-02 | Protection unit of short circuit of accumulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93103938 CN1075834A (en) | 1993-04-02 | 1993-04-02 | Protection unit of short circuit of accumulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1075834A true CN1075834A (en) | 1993-09-01 |
Family
ID=4984914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93103938 Pending CN1075834A (en) | 1993-04-02 | 1993-04-02 | Protection unit of short circuit of accumulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1075834A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101162837B (en) * | 2006-10-13 | 2010-09-08 | 德尔菲技术公司 | Battery protection system |
| CN101355214B (en) * | 2007-07-24 | 2010-12-29 | 浙江海久电池股份有限公司 | Multifunctional socket and plug |
-
1993
- 1993-04-02 CN CN 93103938 patent/CN1075834A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101162837B (en) * | 2006-10-13 | 2010-09-08 | 德尔菲技术公司 | Battery protection system |
| CN101355214B (en) * | 2007-07-24 | 2010-12-29 | 浙江海久电池股份有限公司 | Multifunctional socket and plug |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |