CN103178588B - Mining gas pipeline uninterrupted direct current power supply - Google Patents
Mining gas pipeline uninterrupted direct current power supply Download PDFInfo
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- CN103178588B CN103178588B CN201310135627.3A CN201310135627A CN103178588B CN 103178588 B CN103178588 B CN 103178588B CN 201310135627 A CN201310135627 A CN 201310135627A CN 103178588 B CN103178588 B CN 103178588B
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- 238000005065 mining Methods 0.000 title 1
- 238000007599 discharging Methods 0.000 claims abstract description 26
- 238000002955 isolation Methods 0.000 claims abstract description 7
- 230000005669 field effect Effects 0.000 claims description 54
- 230000001681 protective effect Effects 0.000 claims description 31
- 239000003381 stabilizer Substances 0.000 claims description 26
- 230000001052 transient effect Effects 0.000 claims description 25
- 229910018095 Ni-MH Inorganic materials 0.000 claims description 3
- 229910018477 Ni—MH Inorganic materials 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000004880 explosion Methods 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 230000002457 bidirectional effect Effects 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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Abstract
The invention discloses a mine gas pipeline uninterrupted direct current power supply, which comprises an alternating current input isolation conversion module, a switching power supply, a storage battery pack, a power supply mainboard, a current-limiting resistor, an overvoltage protection module and a surge protection plate, wherein the power supply mainboard comprises an input overvoltage protection circuit, an alternating current and battery switching circuit, a DC/DC conversion circuit and a battery charging and discharging management circuit, the battery charging and discharging management circuit comprises a single chip microcomputer processing unit, a battery voltage acquisition circuit, a charging and discharging control circuit, a battery over-discharge protection circuit and a battery reverse charging protection circuit, the battery over-discharge protection circuit is used for timely cutting off a power supply circuit of a battery pack under the condition that the electric quantity of a charging battery pack is insufficient, and the battery reverse charging protection circuit is used for preventing a battery electrode from charging and cutting off protection under. The invention has the characteristics of reliable performance and strong anti-interference capability, can be used in the 0 region used in an explosion environment for a long time, and has good market popularization value.
Description
Technical field
The present invention relates to a kind of supply unit, be specifically related to the uninterrupted DC power supply of a kind of essential safety at coal mine gas pipeline.
Background technology
Along with country is to the great attention of Safety of Coal Mine Production, the safety monitoring equipment demand that underground coal mine needs also gets more and more, current safety monitoring equipment is mostly mounted in the personnel such as tunnel, excacation face and sets foot in many places, and the equipment in these places requires according to electrical explosion proof the intrinsic safety electric source only needing ib explosive-proof grade.Be in the environment of dangerous blast for a long time gas conveyer tube is this, the intrinsic safety electric source that must select needs higher ia explosive-proof grade, in view of the concrete condition that this environment uses, this type of intrinsic safety electric source also must be uninterrupted supplying power for outside in addition, designs the uninterrupted DC power supply of a kind of intrinsic safety for this reason and solves this problem.Summary of the invention
In view of this, the object of the present invention is to provide a kind of dependable performance, meet ia explosive-proof grade, can provide a kind of gas in mine pipeline of the essential safety of multiple protection uninterrupted DC power supply to power supply itself.
For achieving the above object, the invention provides following technical scheme: the uninterrupted DC power supply of a kind of gas in mine pipeline, comprise and exchange input isolated variable module, Switching Power Supply, batteries, power supply mainboard, current-limiting resistance, overvoltage protective module and surge protection plate, wherein exchange input isolated variable module, Switching Power Supply, power supply mainboard, current-limiting resistance and overvoltage protective module to be sequentially connected in series, described Switching Power Supply is to battery charging, described power supply mainboard manages batteries, and described interchange input isolated variable module is connected with surge protection plate, described power supply mainboard comprises protection circuit against input over-voltage, exchange with battery switching circuit with for gathering accumulator battery voltage, control the battery charging and discharging management circuit of batteries discharge and recharge, the input of described protection circuit against input over-voltage is connected with the output of Switching Power Supply and the output of batteries respectively, the output of protection circuit against input over-voltage is connected with the first input end of battery switching circuit and the first input end of battery charging and discharging management circuit with interchange respectively, second input of battery charging and discharging management circuit is connected with batteries output, the output of battery charging and discharging management circuit is connected with the second input of battery switching circuit with interchange, exchange and be connected with output module with the output of battery switching circuit, described battery charging and discharging management circuit comprises battery voltage acquisition circuit, charging control circuit and single-chip microcomputer processing unit circuit, described battery voltage acquisition unit is used for, to absolute cell voltage and the relative battery voltage acquisition of battery, described charging control circuit is used for, pressure limiting constant current charge controls, described single-chip microcomputer processing unit circuit is used for, and makes a decision process, alternating current and battery handover management and battery warm start discharge and manage the cell voltage gathered, described battery charging and discharging management circuit also comprises the battery warm start discharge circuit stopping battery cold start-up power consumption under battery without reason situation.
Further, described battery charging and discharging management circuit also comprises that the battery avoiding battery electrode to charge to batteries when connecing anti-is counter fills protective circuit.
Further, described battery charging and discharging management circuit also comprises the battery over-discharge protection circuit cutting off when cell voltage is less than set point and export.
Further, described battery warm start discharge circuit comprises the 3rd field effect transistor Q3, 3rd triode S3, 7th resistance R7, 8th resistance R8, 9th resistance R9, tenth resistance R10, 11 resistance R11, first diode D1, second diode D2, first trigger U1 and the first electric capacity C1, wherein between the 7th resistance R7 source electrode that is connected in parallel on the first field effect transistor Q1 and grid, the drain electrode of the first field effect transistor Q1 connects the input of battery over-discharge protection circuit, the collector electrode of the 3rd triode S3 is connected with the grid of the first field effect transistor Q1, between the base stage that 9th resistance R9 is connected in parallel on the 3rd triode S3 and emitter, the grounded emitter of the 3rd triode S3, the base stage of the 3rd triode S3 is connected to the 5th pin of the first trigger U1 by series connection the 8th resistance R8, power end VDD successively series opposing first diode D1 and reverse second diode D2 to ground, 11 resistance R11 is in parallel with the second diode S2, first diode S1 is connected the tenth resistance R10 with the common port of the second diode S2, the other end of the tenth resistance R10 is connected with the output of protection circuit against input over-voltage, tenth resistance R10 is connected with the 2nd pin of the first trigger U1 with the common port of the 11 resistance R11, 1st pin of the first trigger U1 is connected with single-chip microcomputer processing unit respectively with the 3rd pin, the 7th of first trigger U1, 10, 11, 12, 13 pin are ground connection respectively, 1st pin of the first trigger U1 is through the first capacity earth.
Further, the anti-protective circuit of filling of described battery comprises the first resistance R1, second resistance R2, 3rd resistance R3, first transient voltage suppressor diode TV1, first triode S1, first field effect transistor Q1 and jumper switch, second resistance R2 is connected with batteries, the other end of the second resistance R2 respectively with the cathode terminal of the first transient voltage suppressor diode TV1, one end of 3rd resistance R3 is connected with the grid of the first field effect transistor Q1, the anode tap of the first transient voltage suppressor diode TV1, the other end of the 3rd resistance R3, the source electrode of the first field effect transistor Q1, one end of jumper switch and the emitter of the first triode S1 are all connected to ground, the other end of jumper switch is connected with the base stage of the first triode D3, the drain electrode of the first field effect transistor Q1 is connected with the base stage of the first triode S1 with one end of the first resistance R1 respectively, the collector electrode of the first triode S1 is connected with the first output of charging control circuit, the other end of the first resistance R1 is connected with the second output of charging control circuit.
Further, described battery over-discharge protection circuit comprises and described comprises the first voltage-stabiliser tube D1A, 4th resistance R4, 5th resistance R5, 6th resistance R6, second triode S2 and the second field effect transistor Q2, wherein, the cathode terminal of the first voltage-stabiliser tube D1A, the source electrode of the second field effect transistor Q2, one end of 4th resistance R4 is connected with batteries respectively, one end of 5th resistance R5 is connected with the anode tap of the first voltage-stabiliser tube D1A with after one end parallel connection of the 6th resistance R6, the other end of the 5th resistance R5 is connected with the base stage of the second triode S2, the other end of the 6th resistance R6, the emitter of the second triode S2 is all connected to ground, the collector electrode of the second triode S2 and the other end of the 4th resistance R4, the grid of the second field effect transistor Q2 is connected, the drain electrode of the second field effect transistor Q2 is connected with the output of battery switching circuit with exchanging.
Further, described interchange input isolated variable module adopts isolation Industrial Frequency Transformer, and the primary side of described isolation Industrial Frequency Transformer is in parallel with surge protection module with secondary end.
Further; described overvoltage protective module comprises the first overvoltage protective module, the second overvoltage protective module and the 3rd overvoltage protective module that are connected in series; the described input of the first overvoltage protective module is connected with the output of current-limiting resistance, and the output of described 3rd overvoltage protective module is as the output of whole DC power supply.
Further, described power supply mainboard also comprises DC/DC circuit, and described DC/DC circuit exchanges and battery switching circuit and current limliting module for connecting.
Further, described batteries is Ni-MH battery group.
Advantageous Effects:
1, the anti-protective circuit of filling of battery provided by the invention can avoid battery electrode to charge to batteries when connecing anti-, avoids electrode to connect the damage causing battery on the contrary.
2, battery over-discharge protection circuit provided by the invention can cut off the output of battery in time when battery electric quantity is too low, improves the useful life of battery.
3, battery warm start discharge technology provided by the invention stops battery cold start-up power consumption under battery without reason situation, improves the power consumption efficiency of battery
.
4, the present invention has dependable performance, feature that antijamming capability is strong, can meet and use being in 0 district's scope that explosion environment uses for a long time, have good market popularization value.
Other advantages of the present invention, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, or can be instructed from the practice of the present invention.
Accompanying drawing explanation
In order to make object of the present invention, technical scheme and beneficial effect clearly, the invention provides following accompanying drawing and being described:
Fig. 1 is the uninterrupted DC power system block diagram of a kind of gas in mine pipeline of the present invention;
Fig. 2 is battery warm start discharge circuit figure of the present invention;
To be that battery of the present invention is counter fill protective circuit figure to Fig. 3;
Fig. 4 is battery over-discharge protection circuit figure of the present invention;
Fig. 5 is single-chip microcomputer processing unit circuit diagram of the present invention;
Fig. 6 is battery voltage acquisition circuit diagram of the present invention;
Fig. 7 is charging control circuit figure of the present invention;
Fig. 8 is input overvoltage protection circuit figure of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
As shown in Figure 1, the uninterrupted DC power supply of a kind of gas in mine pipeline, comprises and exchanges input isolated variable module, Switching Power Supply, batteries, power supply mainboard, current-limiting resistance, overvoltage protective module and surge protection plate, wherein exchange input isolated variable module, Switching Power Supply, power supply mainboard, current-limiting resistance and overvoltage protective module to be sequentially connected in series, described Switching Power Supply is to battery charging, described power supply mainboard manages batteries, and described interchange input isolated variable module is connected with surge protection plate, described power supply mainboard comprises protection circuit against input over-voltage, exchange with battery switching circuit with for gathering accumulator battery voltage, control the battery charging and discharging management circuit of batteries discharge and recharge, the input of described protection circuit against input over-voltage is connected with the output of Switching Power Supply and the output of batteries respectively, the output of protection circuit against input over-voltage is connected with the first input end of battery switching circuit and the first input end of battery charging and discharging management circuit with interchange respectively, second input of battery charging and discharging management circuit is connected with batteries output, the output of battery charging and discharging management circuit is connected with the second input of battery switching circuit with interchange, exchange and be connected with output module with the output of battery switching circuit, described battery charging and discharging management circuit comprises battery voltage acquisition circuit, charging control circuit and single-chip microcomputer processing unit circuit, described battery voltage acquisition unit is used for, to absolute cell voltage and the relative battery voltage acquisition of battery, described charging control circuit is used for, pressure limiting constant current charge controls, described single-chip microcomputer processing unit circuit is used for, and makes a decision process, alternating current and battery handover management and battery warm start discharge and manage the cell voltage gathered, described battery charging and discharging management circuit also comprises the battery warm start discharge circuit stopping battery cold start-up power consumption under battery without reason situation.
Described battery charging and discharging management circuit also comprises avoids battery electrode when connecing anti-to the anti-battery over-discharge protection circuit filling protective circuit and can cut off output when cell voltage is less than set point of battery that batteries is charged.
Described interchange input isolated variable module adopts isolation Industrial Frequency Transformer, and the primary side of described isolation Industrial Frequency Transformer is in parallel with surge protection module with secondary end.
Described overvoltage protective module comprises the first overvoltage protective module, the second overvoltage protective module and the 3rd overvoltage protective module that are connected in series; the described input of the first overvoltage protective module is connected with the output of current-limiting resistance, and the output of described 3rd overvoltage protective module is as the output of whole DC power supply.
Described power supply mainboard also comprises DC/DC circuit, and described DC/DC circuit exchanges and battery switching circuit and current limliting module for connecting.
Described batteries is Ni-MH battery group.
Below the physical circuit of power supply mainboard is described.
As shown in Figure 2, described battery warm start discharge circuit comprises the 3rd field effect transistor Q3, 3rd triode S3, 7th resistance R7, 8th resistance R8, 9th resistance R9, tenth resistance R10, 11 resistance R11, first diode D1, second diode D2, first trigger U1 and the first electric capacity C1, wherein between the 7th resistance R7 source electrode that is connected in parallel on the first field effect transistor Q1 and grid, the drain electrode of the first field effect transistor Q1 connects the input of battery over-discharge protection circuit, the collector electrode of the 3rd triode S3 is connected with the grid of the first field effect transistor Q1, between the base stage that 9th resistance R9 is connected in parallel on the 3rd triode S3 and emitter, the grounded emitter of the 3rd triode S3, the base stage of the 3rd triode S3 is connected to the 5th pin of the first trigger U1 by series connection the 8th resistance R8, power end VDD successively series opposing first diode D11 and reverse second diode D2 to ground, 11 resistance R11 is in parallel with the second diode Q2, first diode Q1 is connected the tenth resistance R10 with the common port of the second diode Q2, the other end of the tenth resistance R10 is connected with the output of protection circuit against input over-voltage, tenth resistance R10 is connected with the 2nd pin of the first trigger U1 with the common port of the 11 resistance R11, 1st pin of the first trigger U1 is connected with single-chip microcomputer processing unit respectively with the 3rd pin, the 7th of first trigger, 10, 11, 12, 13 pin are ground connection respectively, 1st pin of the first trigger is through the first capacity earth.
Battery warm start discharge technology provided by the invention stops battery cold start-up power consumption under battery without reason situation, improves the power consumption efficiency of battery
.
As shown in Figure 3, the anti-protective circuit of filling of described battery comprises the first resistance R1, second resistance R2, 3rd resistance R3, first transient voltage suppressor diode TV1, first triode S1, first field effect transistor Q1 and jumper switch, the second resistance R2 is connected with batteries, the other end of the second resistance R2 respectively with the cathode terminal of the first transient voltage suppressor diode TV1, one end of 3rd resistance R3, the grid of the first field effect transistor Q1 is connected, the anode tap of the first transient voltage suppressor diode TV1, the other end of the 3rd resistance R3, the source electrode of the first field effect transistor Q1, one end of jumper switch and the emitter of the first triode S1 are all connected to ground, the other end of jumper switch is connected with the base stage of the first triode, the drain electrode of the first field effect transistor Q1 is connected with the base stage of the first triode S1 with one end of the first resistance R1 respectively, the collector electrode of the first triode S1 is connected with the first output of charging control circuit, and the other end of the first resistance R1 is connected with the second output of charging control circuit.
The anti-protective circuit of filling of battery provided by the invention can avoid battery electrode to charge to batteries when connecing anti-, avoids electrode to connect the damage causing battery on the contrary.
As shown in Figure 4, described battery over-discharge protection circuit comprises and described comprises the first voltage-stabiliser tube D1A, 4th resistance R4, 5th R5, 6th R6, second triode S2 and the second field effect transistor Q2, wherein, the cathode terminal of the first voltage-stabiliser tube D1A, the source electrode of the second field effect transistor Q2, one end of 4th resistance R4 is connected with batteries respectively, one end of 5th resistance R5 is connected with the anode tap of the first voltage-stabiliser tube D1A with after one end parallel connection of the 6th resistance R6, the other end of the 5th resistance R5 is connected with the base stage of the second triode S2, the other end of the 6th resistance R6, the emitter of the second triode S2 is all connected to ground, the collector electrode of the second triode S2 and the other end of the 4th resistance R4, the grid of the second field effect transistor Q2 is connected, the drain electrode of the second field effect transistor Q2 is connected with the output of battery switching circuit with exchanging.
Battery over-discharge protection circuit provided by the invention can cut off the output of battery in time when battery electric quantity is too low, improve the useful life of battery.
As shown in Figure 5, described single-chip microcomputer processing unit circuit comprises the first three terminal regulator U3, second three terminal regulator U4, filter JM1, second self-recoverage insurance FS2, 6th electric capacity C6, 7th electric capacity C7, 8th electric capacity C8, 9th electric capacity C9, tenth electric capacity C10, 11 electric capacity C11, 12 electric capacity C12, 13 electric capacity C13, 14 electric capacity C14, 15 electric capacity C15, tenth diode D10, 11 diode D11, 12 diode D12, second transient voltage suppressor diode TV2, 3rd transient voltage suppressor diode TV3, 4th transient voltage suppressor diode TV4, 17 resistance R17, 18 resistance R18, 19 resistance R19 and the second light-emitting diode L2.The anode of the tenth diode D10 is connected with the output of input overvoltage protection circuit, the anode of the 11 diode D11 is connected with the output of battery over-discharge protection circuit, the negative electrode of the 11 diode D11 and the 12 diode D12 is in parallel, the negative electrode of the 11 diode D11 is connected to the input of the second three terminal regulator U4 by the second self-recoverage insurance FS2, the 3rd transient voltage suppressor diode TV3 over the ground of the input series opposing of the second three terminal regulator U4, 3rd transient voltage suppressor diode TV3 is in parallel with the 9th electric capacity C9, the output series connection second electric capacity C10 over the ground of the second three terminal regulator U4, 11 electric capacity C11 and the 4th transient voltage suppressor diode TV4 are in parallel with the tenth electric capacity C10 respectively, the plus earth of the 4th transient voltage suppressor diode TV4.The output of the second three terminal regulator U4 is connected with the input of the first three terminal regulator U3, input series connection the 6th electric capacity C6 over the ground of the first three terminal regulator U33, the output of the first three terminal regulator U3 connects the 7th electric capacity C7 over the ground, 8th electric capacity C8 and the second transient voltage suppressor diode TV2 is in parallel with the 6th electric capacity C6 respectively, the plus earth of the second transient voltage suppressor diode TV2.The input of filter JM1 is connected with the output of the first three terminal regulator U3, and the output of filter JM1 is as power end VDD.Power end VDD is connected with 1 pin that the 18 resistance R18 meets single-chip microcomputer U5 through the 17 resistance R17 connected successively, the 12 diode D12 and the 17 resistor coupled in parallel R17, and the anode of the 12 diode D12 meets the 14 electric capacity C14 over the ground.12 electric capacity C12, the 15 electric capacity C15 and crystal oscillator composition crystal oscillating circuit.Single-chip microcomputer the 5th, the 20 resistance R20, power end VDD in parallel are connected to the 16th pin of single-chip microcomputer through the 19 resistance R19 between 10 pin, connect the second light-emitting diode L2 of forward between power end VDD and the 19 resistance.
As shown in Figure 6, described battery voltage acquisition circuit comprises the 6th diode D6, the 7th diode D7, the 8th diode D8, the 9th diode D9, the second voltage-stabiliser tube D1B, the 4th electric capacity C4, the 5th electric capacity C5, the 17 resistance R17, the 18 resistance R18, the 19 resistance R19, the 20 resistance R20 and K switch.Power end VDD series opposing the 6th diode D6 and the 7th diode D7 is to ground, 4th electric capacity C4 and the 7th diodes in parallel D7,6th diode D6 is connected with single-chip microcomputer processing unit with the common port of the 7th diode D7, public termination the 17 resistance R17 over the ground of the 6th diode D6 and the 7th diode D7.Power end VDD series opposing the 8th diode D8 and the 9th diode D9 is to ground, 9th diode D9 the 5th electric capacity C5 in parallel, 8th diode D8 is connected with single-chip microcomputer processing unit with the common port of the 9th diode D9, 18 resistance R18, second voltage-stabiliser tube D1B, 19 resistance R19, 20 resistance R20, batteries and K switch are sequentially connected in series the closed loop of composition one, the anode of the second voltage-stabiliser tube D1B is connected with the negative electrode of the 19 resistance R19 connecting valve and the second voltage-stabiliser tube D1B, negative electrode series connection the 18 resistance R18 of the second voltage-stabiliser tube D1B is connected with the common port of the 6th diode R6 and the 7th diode R7, 20 resistance R20 and batteries be connected to ground.
Charging control circuit comprises the 3rd three terminal regulator U2, the 11 resistance R11, the 12 resistance R12, the 13 resistance R13, the 14 resistance R14, the 15 resistance R15, the 16 resistance R16, the 3rd diode D3, the 4th diode D4, the 5th diode D5, the first light-emitting diode L1, the second electric capacity C2, the 3rd electric capacity C3, the 4th triode S4 and the 5th triode S5 as described in Figure 7.Wherein, the input of the 3rd three terminal regulator is connected with the output of protection circuit against input over-voltage, the input reverse three diode D3 in parallel with output of the 3rd three terminal regulator, the input termination second electric capacity C2 over the ground of the 3rd three terminal regulator, the output of the 3rd three terminal regulator is connected with the collector electrode of the 4th triode S4 with the first self-recoverage insurance FR1 through the 11 resistance R11 connected successively, the emitter of the 4th triode S4 is connected with the anode of the 4th diode D4, 4th diode D4 the 5th diode D5 in parallel, the anode of the 4th diode D4 is connected with the anode of the 5th diode D5, the negative electrode of the five or two pole D5 is connected with batteries.The common port that 11 resistance R11 and the first self-recoverage insure FS1 is connected to ground through the 12 resistance R12 that is connected successively and the 13 resistance R13.The base stage of the 4th triode S4 is connected with the emitter of the 5th triode S5 with the first light-emitting diode L1 through the 16 resistance R16 connected successively, the collector electrode of the 5th triode S5 is connected to ground, base stage and the collector electrode of the 3rd electric capacity C3 and the 5th triode S5 are in parallel, 15 resistance R15 is in parallel with the 3rd electric capacity C3, and the common port of the 5th triode S5 and the 3rd electric capacity C3 connects through the 14 resistance R14 and single-chip microcomputer processing unit.
As shown in Figure 8, described input overvoltage protection circuit comprises the first self-recoverage insurance FS1, the 3rd voltage-stabiliser tube D1C, the 4th voltage-stabiliser tube D1D, bidirectional transient voltage killer tube TV, the 5th transient voltage killer tube TV5, the 20 resistance R20, the 21 resistance R21, the 22 resistance R22, the 23 resistance R23, the 6th triode D6, the 7th triode D7 and the 4th field effect transistor Q4.The voltage that Switching Power Supply or batteries export is connected to ground through the first self-recoverage insurance FS1 and bidirectional transient voltage killer tube TV connected successively.First self-recoverage insurance FS1 is connected with the anode of the 3rd voltage-stabiliser tube D1C with the common port of bidirectional transient voltage killer tube TV, the negative electrode of the 3rd voltage-stabiliser tube D1C is connected with the source electrode of the 4th field effect transistor Q4, and the drain electrode of the 4th field effect transistor Q4 is connected with the input of alternating current with battery switching circuit, battery warm start discharge circuit and charging control circuit respectively.4th voltage-stabiliser tube D1D is in parallel with the 3rd voltage-stabiliser tube D1C, the negative electrode of the 4th voltage-stabiliser tube D1D is connected with the negative electrode of the 5th transient voltage killer tube TV5, the anode of the 5th transient voltage killer tube TV5 is connected with the base stage of the 7th triode S7 through the 22 resistance R22, 5th transient voltage killer tube TV5 is connected the 23 resistance over the ground with the common port of the 22 resistance R22, the grounded collector of the 7th triode S7, the emitter of the 7th triode S7 is connected with the base stage of the 6th triode S6, the grounded collector of the 6th triode S6, the emitter of the 6th triode S6 is connected with the grid of the 4th field effect transistor Q4, source electrode two ten one resistance in parallel with between grid of the 4th field effect transistor Q4, 20 resistance in parallel between the source electrode of the 4th field effect transistor A4 with the base stage of the 6th triode S3.
Respectively battery warm start discharge circuit, the anti-course of work of filling protective circuit and battery over-discharge protection circuit of battery are described below.
Tenth resistance R10 is input to 2 pin of the first trigger U1 after the first self-recoverage insurance FS1, the 3rd voltage-stabiliser tube D1C, the 4th voltage-stabiliser tube D1D, the 4th field effect transistor Q4 and the 11 resistance R11 dividing potential drop, the level signal exchanging input is judged as one, 1 pin of the first trigger U1 is linked into 1 pin of single-chip microcomputer U5, forms reset circuit by the 17 resistance R17, the 14 electric capacity C14, the 12 diode D12.Single-chip microcomputer U3 is when interchange powers on, 3 pin of a high level to the first trigger U1 are exported by 18 pin of single-chip microcomputer U5, 4 pin of the first trigger U1 are linked into the VDD power end of single-chip microcomputer U5, now 5 pin of the first trigger U1 export a high level, the 18 pin output states of above-mentioned single-chip microcomputer U5 no longer change, the signal of 5 pin of the first trigger U1 remains on a high level state, through the base stage of the 8th resistance R8 to the 3rd triode S3, 3rd triode S3 conducting, the collector electrode of the 3rd triode S3 is connected with the grid of the 3rd field effect transistor Q3, now the 3rd field effect transistor Q3 opens, such batteries could be powered to back-end circuit.
Batteries is connected with the second resistance R2 with correct access way, grid level of the first field effect transistor Q1 is supplied to after second resistance R2 and the 3rd resistance R3 dividing potential drop, first field effect transistor Q1 opens and is conducting to ground, corresponding first triode S1 is in cut-off state, and now single-chip microcomputer U5 can normally export control signal and charges to batteries, when batteries is connected with the second resistance R2 in a wrong manner, now be equivalent to the second resistance R2 zero potential, the conducting voltage of the first field effect transistor Q1 can not be supplied to after second resistance R2 and the first resistance R1 dividing potential drop, first field effect transistor Q1 is in closed condition, first resistance R1 is through the second three terminal regulator U2, 11 resistance R11 give the first triode S1 provide one can the level of conducting, first triode S1 conducting, the collector electrode of the first triode S1 is connected with the base stage controlling the 5th triode S5 charged and receives ground in the lump, 5th triode S5 is forced to turn off, now single-chip microcomputer U5 can not export the batteries of control signal to reversal connection and charges normal.
Batteries is linked into described battery over-discharge protection circuit through the 3rd field effect transistor Q3, when cell voltage is higher than the shutter limit value set, first voltage-stabiliser tube D1A conducting, 5th resistance R5, the voltage stabilizing value of the 6th resistance R6 to voltage-stabiliser tube carry out dividing potential drop, voltage after dividing potential drop is input to the base stage of the second triode S2, second triode S2 conducting, low level moved to by the collector electrode of the second triode S2, thus control the second field effect transistor Q2 open, now batteries through the second field effect transistor Q2 to back-end circuit; When cell voltage is lower than the shutter limit value set; first voltage-stabiliser tube D1A ends; base stage reliable level that the dividing potential drop of the 5th resistance R5, the 6th resistance R6 can not be supplied to the second triode S2 is opened; second triode S2 ends; then the second field effect transistor Q2 can not be controlled; now batteries by the second field effect transistor Q2 to back-end circuit, cannot be cut off and export.
The present invention has dependable performance, feature that antijamming capability is strong, can meet and use being in 0 district's scope that explosion environment uses for a long time, have good market popularization value.
What finally illustrate is, above preferred embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although by above preferred embodiment to invention has been detailed description, but those skilled in the art are to be understood that, various change can be made to it in the form and details, and not depart from claims of the present invention limited range.
Claims (10)
1. the uninterrupted DC power supply of gas in mine pipeline, comprises and exchanges input isolated variable module, Switching Power Supply, batteries, power supply mainboard, current-limiting resistance, overvoltage protective module and surge protection plate, wherein exchange input isolated variable module, Switching Power Supply, power supply mainboard, current-limiting resistance and overvoltage protective module to be sequentially connected in series, described Switching Power Supply is to battery charging, described power supply mainboard manages batteries, and described interchange input isolated variable module is connected with surge protection plate, described power supply mainboard comprises protection circuit against input over-voltage, exchange with battery switching circuit with for gathering accumulator battery voltage, control the battery charging and discharging management circuit of batteries discharge and recharge, the input of described protection circuit against input over-voltage is connected with the output of Switching Power Supply and the output of batteries respectively, the output of protection circuit against input over-voltage is connected with the first input end of battery switching circuit and the first input end of battery charging and discharging management circuit with interchange respectively, second input of battery charging and discharging management circuit is connected with batteries output, the output of battery charging and discharging management circuit is connected with the second input of battery switching circuit with interchange, exchange and be connected with output module with the output of battery switching circuit, described battery charging and discharging management circuit comprises battery voltage acquisition circuit, charging control circuit and single-chip microcomputer processing unit circuit, described battery voltage acquisition circuit is used for the absolute cell voltage of battery and battery voltage acquisition relatively, and described charging control circuit is used for pressure limiting constant current charge and controls, described single-chip microcomputer processing unit circuit is used for making a decision process, alternating current and battery handover management and battery warm start to the cell voltage gathered and discharges and manage, it is characterized in that: described battery charging and discharging management circuit also comprises the battery warm start discharge circuit stopping battery cold start-up power consumption under battery without reason situation.
2. the uninterrupted DC power supply of a kind of gas in mine pipeline according to claim 1; it is characterized in that: described battery charging and discharging management circuit also comprises that the battery avoiding battery electrode to charge to batteries when connecing anti-is counter fills protective circuit; first output of described the battery counter first input end and charging control circuit that fill protective circuit is connected; second output of described battery counter the second input and charging control circuit that fill protective circuit is connected, and the input of charging control circuit is connected with the output of protection circuit against input over-voltage.
3. the uninterrupted DC power supply of a kind of gas in mine pipeline according to claim 1, is characterized in that: described battery charging and discharging management circuit also comprises the battery over-discharge protection circuit cutting off when cell voltage is less than set point and export.
4. the uninterrupted DC power supply of a kind of gas in mine pipeline according to claim 1, it is characterized in that: described battery warm start discharge circuit comprises the 3rd field effect transistor (Q3), 3rd triode (S3), 7th resistance (R7), 8th resistance (R8), 9th resistance (R9), tenth resistance (R10), 11 resistance (R11), first diode (D1), second diode (D2), first trigger (U1) and the first electric capacity (C1), wherein between the 7th resistance (R7) source electrode that is connected in parallel on the first field effect transistor (Q1) and grid, the drain electrode of the first field effect transistor (Q1) connects the input of battery over-discharge protection circuit, the collector electrode of the 3rd triode (S3) is connected with the grid of the first field effect transistor (Q1), between the base stage that 9th resistance (R9) is connected in parallel on the 3rd triode (S3) and emitter, the grounded emitter of the 3rd triode (S3), the base stage of the 3rd triode (S3) is connected to the first output of the first trigger (U1) by series connection the 8th resistance (R8), power end (VDD) successively series opposing first diode (D1) and reverse second diode (D2) arrives ground, 11 resistance (R11) is in parallel with the second diode (D2), first diode (D1) is connected the tenth resistance (R10) with the common port of the second diode (S2), the other end of the tenth resistance (R10) is connected with the output of protection circuit against input over-voltage, tenth resistance (R10) is connected with the first data input pin of the first trigger (U1) with the common port of the 11 resistance (R11), first reset terminal of the first trigger (U1) is connected with single-chip microcomputer processing unit respectively with the first input end of clock, the earth terminal of the first trigger (U1), second arranges end, second clock input, second data input pin, second reset terminal is ground connection respectively, the power end of the first trigger (U1) is through the first electric capacity (C1) ground connection.
5. the uninterrupted DC power supply of a kind of gas in mine pipeline according to claim 2, it is characterized in that: the anti-protective circuit of filling of described battery comprises the first resistance (R1), second resistance (R2), 3rd resistance (R3), first transient voltage suppressor diode (TV1), first triode (S1), first field effect transistor (Q1) and jumper switch, second resistance (R2) is connected with batteries, the other end of the second resistance (R2) respectively with the cathode terminal of the first transient voltage suppressor diode (TV1), one end of 3rd resistance (R3) is connected with the grid of the first field effect transistor (Q1), the anode tap of the first transient voltage suppressor diode (TV1), the other end of the 3rd resistance (R3), the source electrode of the first field effect transistor (Q1), one end of jumper switch and the emitter of the first triode (S1) are all connected to ground, the other end of jumper switch is connected with the base stage of the first triode (D3), the drain electrode of the first field effect transistor (Q1) is connected with the base stage of the first triode (S1) with one end of the first resistance (R1) respectively, the collector electrode of the first triode (S1) is connected with the first output of charging control circuit, the other end of the first resistance (R1) is connected with the second output of charging control circuit.
6. the uninterrupted DC power supply of a kind of gas in mine pipeline according to claim 3, it is characterized in that: described battery over-discharge protection circuit comprises the first voltage-stabiliser tube (D1A), 4th resistance (R4), 5th resistance (R5), 6th resistance (R6), second triode (S2) and the second field effect transistor (Q2), wherein, the cathode terminal of the first voltage-stabiliser tube (D1A), the source electrode of the second field effect transistor (Q2), one end of 4th resistance (R4) is connected with batteries respectively, one end of 5th resistance (R5) is connected with the anode tap of the first voltage-stabiliser tube (D1A) with after one end parallel connection of the 6th resistance (R6), the other end of the 5th resistance (R5) is connected with the base stage of the second triode (S2), the other end of the 6th resistance (R6), the emitter of the second triode (S2) is all connected to ground, the collector electrode of the second triode (S2) and the other end of the 4th resistance (R4), the grid of the second field effect transistor (Q2) is connected, the drain electrode of the second field effect transistor (Q2) is connected with the output of battery switching circuit with exchanging.
7. the uninterrupted DC power supply of a kind of gas in mine pipeline according to claim 1, is characterized in that: described interchange input isolated variable module adopts isolation Industrial Frequency Transformer, and the primary side of described isolation Industrial Frequency Transformer is in parallel with surge protection module with secondary end.
8. the uninterrupted DC power supply of a kind of gas in mine pipeline according to claim 1; it is characterized in that: described overvoltage protective module comprises the first overvoltage protective module, the second overvoltage protective module and the 3rd overvoltage protective module that are connected in series; the described input of the first overvoltage protective module is connected with the output of current-limiting resistance, and the output of described 3rd overvoltage protective module is as the output of whole DC power supply.
9. the uninterrupted DC power supply of a kind of gas in mine pipeline according to claim 1, is characterized in that: described power supply mainboard also comprises DC/DC circuit, and described DC/DC circuit exchanges and battery switching circuit and current-limiting resistance for connecting.
10. the uninterrupted DC power supply of a kind of gas in mine pipeline according to claim 1, is characterized in that: described batteries is Ni-MH battery group.
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| CN201310135627.3A CN103178588B (en) | 2013-04-18 | 2013-04-18 | Mining gas pipeline uninterrupted direct current power supply |
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| CN103475050B (en) * | 2013-09-02 | 2016-08-10 | 四川川奇机电有限责任公司 | Charging circuit and the charger with this charging circuit |
| CN103812164B (en) * | 2013-12-13 | 2017-03-29 | 中煤科工集团重庆研究院有限公司 | Grading starting type mining intrinsic safety power supply |
| CN104362722A (en) * | 2014-11-27 | 2015-02-18 | 成都龙腾中远信息技术有限公司 | Airborne data recorder power supply device |
| CN107230965A (en) * | 2017-08-07 | 2017-10-03 | 东莞博力威电池有限公司 | Port multi-level protection circuit |
| CN108111001A (en) * | 2017-12-27 | 2018-06-01 | 恒安科技（中山）有限公司 | A kind of intrinsically safe power supply |
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