CN115692903A - Emergency management system for thermal runaway of battery of energy storage power station - Google Patents
Emergency management system for thermal runaway of battery of energy storage power station Download PDFInfo
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- CN115692903A CN115692903A CN202211712997.4A CN202211712997A CN115692903A CN 115692903 A CN115692903 A CN 115692903A CN 202211712997 A CN202211712997 A CN 202211712997A CN 115692903 A CN115692903 A CN 115692903A
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- 239000000779 smoke Substances 0.000 claims abstract description 21
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- 238000001514 detection method Methods 0.000 claims description 50
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- 230000001154 acute effect Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 6
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- 210000000352 storage cell Anatomy 0.000 description 4
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- 230000000630 rising effect Effects 0.000 description 2
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Abstract
The invention discloses an emergency management system for thermal runaway of a battery of an energy storage power station, which comprises the energy storage power station, wherein a plurality of energy storage cabinets are arranged in the energy storage power station, the energy storage cabinets are divided into a plurality of energy storage grids by partition plates, bottom plates of the energy storage grids are obliquely arranged, the battery is arranged in the energy storage grids, and a monitoring device, a fixing mechanism, an ejection mechanism, a temperature sensor and a smoke sensor are arranged in each energy storage grid; the monitoring device monitors the state of the battery in real time; the fixing mechanism is used for fixing the battery in the energy storage grid; the ejection mechanism is used for pushing the thermally failed battery out of the energy storage grid, and the problem that the battery state monitoring in the prior art is unreliable and inaccurate is solved. The battery state is accurately monitored through the action of the wire group of the monitoring device and the emergency management system, and the thermally-failed battery can be timely pushed out of the energy storage grid under the action of the ejection mechanism and the fixing mechanism.
Description
Technical Field
The invention belongs to the technical field of energy storage power station management, and particularly relates to an emergency management system for thermal runaway of a battery of an energy storage power station.
Background
Wind power and photovoltaic can not work continuously for 24 hours due to the influence of natural environment, and impact on a power grid is great during grid-connected power generation, so that the development of the wind power and photovoltaic is restricted. To solve the problem, the state advocates to establish an energy storage power station for storing energy, wherein the energy storage power station is used as a bridge between power generation equipment and a power grid, and the energy storage power station is composed of a plurality of energy storage batteries, and needs high-energy-density batteries as an electric energy storage medium. At present, energy storage batteries are installed in a centralized mode, and one high-energy storage battery explodes to cause an interlocking reaction, so that one battery cabin battery explodes to further affect the whole energy storage power station, and once the battery cabin battery explodes, the economic loss and the social influence of the battery cabin battery are difficult to bear.
Battery explosion is an extreme phenomenon. There are generally two cases that arise: firstly, charge and discharge are out of control, and secondly, the quality of the battery is not good. For the first case, battery Management System (BMS) can be effectively prevented; there is currently no effective solution to the explosion fire caused by the second case battery's own problems. Because the battery does not need oxygen in the process of fire and explosion, the battery instantly releases self-generated energy, a plurality of energy storage power stations explode, and a fire fighting team does not have effective extinguishing measures, so that huge economic loss is caused, and firefighters sacrifice events.
The self-problems of the battery are mostly expressed as explosion and fire caused by thermal runaway of the battery, and the thermal runaway of the battery needs to be timely discovered and treated. At present, the detection means of the battery mainly analyzes data acquired by temperature, current and smoke and then takes an alarm or processing action, so that the reliability and the real-time performance are poor, and the possibility of false alarm is high. Once false alarm occurs in the thermal runaway detection system, the safety system is triggered to act, or false alarm occurs, and direct loss and indirect loss are very large; and the occurrence of false alarm of the thermal runaway detection system can generate great potential safety hazard and destructive irreversible loss to the energy storage system.
Disclosure of Invention
The invention aims to: the emergency management system for the thermal runaway of the battery of the energy storage power station aims to solve the problem that the monitoring reliability of the thermal failure battery is poor in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme: the emergency management system for the thermal runaway of the battery of the energy storage power station comprises the energy storage power station, wherein a plurality of energy storage cabinets are arranged in the energy storage power station, the energy storage cabinets are divided into a plurality of energy storage grids by partition plates, bottom plates of the energy storage grids are obliquely arranged, the battery is arranged in the energy storage grids, and a monitoring device, a fixing mechanism, an ejection mechanism, a temperature sensor and a smoke sensor are arranged in each energy storage grid; the monitoring device monitors whether the volume of the battery changes in real time; the fixing mechanism is used for fixing the battery in the energy storage grid; the ejection mechanism is used for pushing the thermally failed battery out of the energy storage grid.
As a further description of the above technical solution: fixing mechanism includes mounting panel, spacing arm, spacing end cover, the mounting panel sets up on the bottom plate of energy storage check, the mounting panel is on a parallel with the bottom plate of energy storage check, spacing arm is provided with two, two spacing arm all rotate in the mounting panel is kept away from the side of the bottom plate of energy storage check, the pivot perpendicular to of spacing arm the mounting panel, the one end edge that its pivot was kept away from to spacing arm extends the opening part of energy storage check is two spacing arm about the mounting panel symmetry sets up, the one end that its pivot was kept away from to spacing arm is provided with spacing flange, two spacing flange is just to setting up, spacing end cover passes through the opening part of explosion bolt setting at the energy storage check.
As a further description of the above technical solution: and torsion springs are arranged at the rotating shafts of the limiting arms, and under the action of the torsion springs, the ends, far away from the rotating shafts, of the two limiting arms are close to each other.
As a further description of the above technical solution: the two ends of the length direction of the limiting arm are respectively provided with a bearing block, the bearing blocks are arranged below the limiting arm, and the batteries are arranged on the four bearing blocks.
As a further description of the above technical solution: the monitoring device comprises a lead group and an emergency management system, wherein the lead group comprises four leads connected in parallel, the lead group is wound on a battery and is connected with the emergency management system in series, and the emergency management system is controlled to trigger the ejection mechanism.
As a further description of the above technical solution: the ejection mechanism comprises a push plate, a magnetic attraction block, an electromagnet and a fixed plate, wherein the fixed plate is vertically arranged on the mounting plate, the push plate is arranged on the fixed plate in a sliding mode, the push plate is parallel to the fixed plate, a spring is arranged between the push plate and the fixed plate, the magnetic attraction block is fixed on the push plate, the electromagnet is fixed on the fixed plate, the magnetic attraction block corresponds to the electromagnet and is magnetically attracted together, and the electromagnet is connected with the emergency management system.
As a further description of the above technical solution: the one end that spacing arm is close to its pivot still is provided with the unlocking plate, the unlocking plate sets up spacing arm orientation the side of push pedal, the unlocking plate be located the battery with between the push pedal, the unlocking plate with spacing arm forms acute angle contained angle, the unlocking plate is kept away from the directional battery of tip of spacing arm.
In conclusion, due to the adoption of the technical scheme, the invention has the beneficial effects that.
(1) Through the behavior of the wire group of winding on the battery, the state of accurate judgement battery, when the battery produces thermal failure and takes place bulging deformation or detonation, the wire group can be the very first time fracture, and emergency management system cuts off the electro-magnet power according to receiving the current variation, and ejection mechanism pops out the battery, and the monitoring of the battery thermal runaway state is more reliable stable through the wire group.
(2) The bottom plate of energy storage check is the tilt state to the battery is located four bearing board and does not with the bottom plate direct contact of energy storage check, under the effect of thrust and its gravity in the twinkling of an eye of push pedal, the resistance that receives when the battery drops is littleer.
(3) Through the fixed spacing end cover of explosion bolt for spacing end cover stability is strong can support the great battery of weight, and the while can be quick removes the fixed to spacing end cover, and when the explosion bolt was removed fixed spacing end cover, the blast wave that its fracture produced also produced certain separating speed when making spacing end cover and energy storage check to separate, spacing end cover breaks away from fast and is connected with the energy storage check, the resistance that does not receive spacing end cover when making the battery pop out.
(4) In order to carry out safer management and monitoring on the thermal runaway of the battery, a thermal runaway detection module is arranged and comprises a primary detection circuit and a secondary detection circuit, the primary detection circuit is used for detecting whether the leads in the lead group are broken or not, the secondary detection circuit is used for judging the number of the broken leads, so that the stage where the thermal runaway of the battery is located is judged, a corresponding processing mode is arranged, the battery does not influence the use of other energy storage grids after the thermal runaway occurs, the battery can be repeatedly used, the use efficiency of the energy storage power station is improved, and the safety of the energy storage power station is greatly enhanced.
(5) When the secondary detection circuit judges the state of the thermal runaway of the battery by using the quotient signal, the temperature sensor and the smoke sensor are arranged to further assist in judging the quotient signal, so that the accuracy of the thermal runaway detection module is further improved.
Drawings
Fig. 1 is a schematic diagram of an energy storage power station of the present invention.
Fig. 2 is a schematic diagram of an energy storage power station of the present invention, wherein the thermal runaway battery falls off.
Fig. 3 is a schematic diagram of the internal structure of the energy storage cell of the present invention, in a battery installation state, wherein the limiting end cap is not fixed at the opening of the energy storage cell.
Fig. 4 is a schematic diagram of the internal structure of the energy storage cell of the present invention, with the battery not installed.
Fig. 5 is a schematic diagram of the internal structure of the energy storage cell of the present invention, showing the battery in a post-ejection state.
Fig. 6 is a circuit schematic of the primary detection circuit of the present invention.
Fig. 7 is a circuit schematic of the secondary detection circuit of the present invention.
Illustration of the drawings: 01. a battery; 1. an energy storage power station; 2. an energy storage cabinet; 3. an energy storage grid; 4. a fixing mechanism; 41. a limiting end cover; 42. exploding the bolt; 5. mounting a plate; 6. a limiting arm; 7. a limiting flange; 8. a bearing block; 9. an unlocking plate; 10. a wire group; 12. pushing the plate; 13. a magnetic block; 14. an electromagnet; 15. a fixing plate; 16. a guide bar; 17. a spring; 18. a temperature sensor; 19. a smoke sensor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, an energy storage power station battery thermal runaway emergency management system is provided, wherein a plurality of energy storage cabinets 2 are arranged in an energy storage power station, each energy storage cabinet 2 is divided into a plurality of energy storage grids 3 by a partition plate, a bottom plate of each energy storage grid 3 is obliquely arranged, an energy storage battery 01 is arranged in each energy storage grid 3, the emergency management system comprises a fixing mechanism 4 and an ejection mechanism which are arranged in each energy storage grid 3, a temperature sensor 18 and a smoke sensor 19 which are arranged on the side wall of each energy storage grid 3, and a monitoring device arranged on each battery 01; fixing mechanism 4 is used for fixing battery 01 in energy storage check 3, and monitoring devices is used for real-time supervision battery 01's volume whether to change, and in case monitoring devices judges that battery 01 takes place the thermal runaway, emergency management system gives ejection mechanism with signal transmission, and ejection mechanism releases energy storage check 3 with thermal runaway's battery 01.
The fixing mechanism 4 comprises a mounting plate 5 and two limiting arms 6, the mounting plate 5 is fixedly arranged on a bottom plate of the energy storage grid 3, the mounting plate 5 is parallel to the bottom plate, the two limiting arms 6 are arranged, the two limiting arms 6 are rotatably arranged on the mounting plate 5, one ends, far away from rotating shafts, of the limiting arms 6 are provided with limiting flanges 7, the two limiting arms 6 are both rotatably arranged on the side surfaces, far away from the bottom plate of the energy storage grid 3, of the mounting plate 5, the two limiting arms 6 are symmetrically arranged relative to the mounting plate 5, after the battery 01 is placed in the energy storage grid 3, the battery 01 is located between the two limiting arms 6, the rotating shafts of the limiting arms 6 are provided with torsional springs (not shown in the figure), one ends, far away from the rotating shafts, of the two limiting arms 6 are close to each other under the action of the torsional springs, two ends, in the length direction, of the limiting arms 6 are respectively provided with a bearing block 8, when the battery 01 is located in the energy storage grid 3, four corners of the bottom surface of the battery 01 correspond to the four bearing blocks 8, the battery 01 is supported by the bearing blocks 7, the two limiting flanges 7 clamp the battery 01, so that the battery 01 cannot slide down from the energy storage grid 3, the battery 01, the opening, the fixing mechanism 4 further comprises a limiting end cover 41, and a limiting end cover 41, the limiting cover 41, which seals the energy storage grid 01, and prevents the energy storage grid 01 from accidentally sliding down; spacing end cover 41 is connected through explosion bolt 42 with between the energy storage check 3, and back on the energy storage check 3 is installed to spacing end cover 41, and the tight piece that supports that sets up in spacing end cover 41 side supports battery 01 for battery 01 sets up more stably in the energy storage check. The explosive bolt 42 is designed in the design of ' certain small explosive bolt ', 2014, 4 th period initiating explosive device ', and the explosive bolt 42 is connected with an emergency management system.
Monitoring devices includes wire group 10, wire group 10 is provided with four wires, parallelly connected and the winding of mutual insulation between four wires is on battery 01, four wires glue on battery 01 through the resin, wire group 10 is connected with emergency management system, when battery 01 takes place the thermal runaway, battery 01 shell takes place the bulging deformation, along with the increase of deformation, wire group 10's wire can split, the wire fracture can make emergency management system monitor the electric current of wire group and change, emergency management system makes to launch the mechanism and release energy storage check 3 with battery 01 according to the change of electric current, make thermal runaway's battery 01 break away from energy storage rack 2.
Wherein the spacing between the leads shown in fig. 3 is only one embodiment of the present invention, it is contemplated that the spacing between the leads may be larger to ensure monitoring of volume changes due to thermal runaway anywhere in the battery or overheating combustion due to more severe thermal runaway, etc.; meanwhile, the distance between the leads can be smaller, and the method is used for monitoring thermal runaway of the central position of the battery in an important mode. The thermal runaway of the battery can be represented as volume change or sudden explosion, but the battery generally has a larger volume before explosion, so that the wire can be broken through the expansion of the battery volume as an important factor for judging whether the thermal runaway hidden danger exists in the battery, and even if the battery suddenly explodes without expansion, the wire can be blown out, and then the thermal runaway is judged.
The ejection mechanism includes push pedal 12, magnetism piece 13, electro-magnet 14, fixed plate 15 sets up perpendicularly on mounting panel 5, push pedal 12 slides and sets up on fixed plate 15, push pedal 12 is parallel with fixed plate 15, push pedal 12 is towards the fixed two guide arms 16 that are provided with of fixed plate 15 side, two guide arms 16 wear to locate fixed plate 15, guide arm 16 is perpendicular to fixed plate 15, the cover is equipped with the spring on the guide arm 16, the spring is located between push pedal 12 and the fixed plate 15, electro-magnet 14 is fixed to be set up on fixed plate 15, magnetism piece 13 is fixed to be set up on push pedal 12, magnetism piece 13 and electro-magnet 14 are just to setting up, under the 14 on-state of electro-magnet, magnetism piece 13 adsorbs together with electro-magnet 14, the spring is in compression state. When the electromagnet 14 is powered off, the electromagnet 14 loses magnetic attraction force instantly, the push plate 12 is ejected away from the fixing plate 15 under the action of the spring, and the battery 01 arranged in the energy storage grid 3 is pushed out; two relative sides of spacing arm 6 are provided with unlocking plate 9, and when magnetism piece 13 and electro-magnet 14 adsorb together, unlocking plate 9 kept away from spacing arm 6 one end along extending between battery 01 and the push pedal 12, and unlocking plate 9 and spacing arm 6 form acute angle contained angle, and unlocking plate 9 keeps away from the directional battery 01 of tip of spacing arm 6. When the push plate 12 is far away from the fixing plate 15, the unlocking plate 9 is firstly pushed, so that the unlocking plate 9 and the limiting arm 6 rotate, the limiting flange 7 at the end part of the limiting arm 6 does not limit the battery 01, and then the push plate 12 contacts the battery 01 and pushes out the battery 01.
The working principle is as follows: install battery 01 in energy storage rack 2 in the battery compartment, at first during installation battery 01 with wire group 10 cover on battery 01 and fixed, then be connected wire group 10's both ends and emergency management system, put into energy storage check 3 with battery 01 afterwards, because energy storage check 3 bottom plate is the tilt state, battery 01 has the trend of free landing under the effect of battery 01 gravity, the spacing flange 7 of two spacing arm 6 tip blocks battery 01 landing, battery 01 bottom surface is not held up by four bearing piece 8 with energy storage check 3 bottom plate direct contact, after battery 01 fixes, magnetism is inhaled piece 13 and is adsorbed on electro-magnet 14 under electro-magnet 14's effect, push pedal 12 is close to fixed plate 15, the spring is in compression state this moment, then install spacing end cover 41 in the opening of energy storage check 3 through the explosion bolt.
When the battery 01 is in thermal runaway, expansion deformation or burning occurs seriously, the lead group 10 is blown or propped up, the emergency management system detects that the current of the lead group is reduced or interrupted, and synthesizes signals of the temperature sensor 18 and the smoke sensor 19, if the battery is in a runaway state at the moment, the emergency management system immediately cuts off the power supply of the electromagnet 14, the push plate 12 moves away from the fixed plate 15 under the action of the spring, the push plate 12 firstly pushes the unlocking plate 9 when being away from the fixed plate 15, so that the unlocking plate 9 and the limiting arm 6 rotate, the limiting flange 7 at the end part of the limiting arm 6 does not limit the battery 01, then the push plate 12 contacts the battery 01 and pushes out the battery 01, and meanwhile, the emergency management system supplies power to the explosion bolt 42, the explosion bolt 42 receives given initial electric energy, converts the electric energy into heat energy through a bridge wire, and heats surrounding ignition powder; ignition powder is combusted, the detonator is ignited by flame through the isolating and air-closing mechanism, detonation waves are generated by the detonator, the body of the explosive bolt 42 is burst off at the weakening groove of the explosive bolt 42 by utilizing the instantaneous high pressure of the detonation waves, the limit end cover 41 is separated from the energy storage grid 3, the limit end cover 41 has certain relative separation speed, the limit end cover 41 does not support the battery 01, and the battery 01 slides out smoothly from the opening of the energy storage grid 3.
As shown in fig. 6 to 7, the emergency management system further includes a thermal runaway detection module, and the thermal runaway detection module includes a primary detection circuit and a secondary detection circuit, where the primary detection circuit and the secondary detection circuit output signals to other parts of the emergency management system according to current changes of the wire group, that is, one end of the primary detection circuit is connected to the wire group, the other end of the primary detection circuit is connected to one end of the secondary detection circuit, and the other end of the secondary detection circuit is connected to the temperature sensor, the smoke sensor, the electromagnet 14, and the explosion bolt 42, respectively.
The working principle is as follows.
1. None of the wires in the wire group were broken: the primary detection circuit is started when a battery 01 is placed in an energy storage grid 3, namely switches S1-S4 are started at the moment, the switches S1-S4 respectively output current signals in four parallel-connected leads, namely leads 1-4, in a lead group to a four-input AND gate U1A at the moment, wherein the current signals are transmitted through branches in the four parallel-connected leads, namely leads 1-4, in the lead group, the AND gate U1A is utilized to judge whether the leads break due to battery thermal runaway in the lead group, when the AND gate U1A conducts a diode D5, the current signals in the four parallel-connected leads of the lead group at the moment are all present, namely the battery does not generate the thermal runaway, at the moment, the diode D5 discharges a high level output by the diode D5 to the ground through a capacitor C3 and a resistor R16, subsequent high level processing is stopped, and the current signals in the four parallel-connected leads, namely leads 1-4, in the lead group at the next moment are continuously calculated by utilizing the U1A.
2. The wire in the wire group is broken: when the and gate U1A turns on the diode D6 through the not gate U2C (i.e., it indicates that one or more wires in the wire group are broken), the diode D6 turns on the relay K2, the relay K2 turns off the switch S8, turns off the switch S11, turns on the switch S7, turns on the switch S9, and simultaneously the diode D6 turns on the thyristors Q1 to Q4 through the capacitor C2, at this time, the thyristors Q1 to Q4 output the current signals of the wires 1 to 4 in the wire group to the non-inverting terminal of the operational amplifier U2B through the resistors R3, R6, R2, and R11, the operational amplifier U2B adds the current signals of the wires 1 to 4 to obtain a current sum signal, that is the current sum signal output by the operational amplifier U2B at this time, the current sum signal is the current sum signal of the wire group, the current sum signal is transmitted to a divider composed of the operational amplifier U4B and V1, and the multiplier R10 provides the current sum signal, and the current sum signal is the divider output by the divider when the current sum signal and the divider and the multiplier providing the current sum signal, and the divider in the normal state, and the divider outputting the current sum signal.
And the secondary detection circuit judges the number of the broken wires in the wire group according to the amplitude of the quotient signal.
(1) One wire of the wire group is broken: the secondary detection circuit judges the quotient signal, when the quotient signal conducts the triode Q5, the fact that one of the four leads in the lead group is broken due to expansion after thermal runaway of the battery is shown, namely, current and current signals of the three leads are added to obtain the quotient, the triode Q5 conducts the diode D8 (namely, the diode D4 and the triode Q5 cannot be conducted simultaneously), the diode D8 sends a reminding signal to the control terminal to remind a worker of paying more attention to the thermal runaway of the battery, and the control terminal is one part of the BMS.
(2) Two wire breaks occurred in the wire group: when a commercial signal conducts the relay K4 through the diode D2, the fact that two of the four leads in the lead group are broken due to expansion after thermal runaway of the battery is shown, namely current and a signal are obtained by adding current signals of the two leads, the diode D2 conducts the relay K4 at the moment, the relay K4 conducts the switch S5 and the switch S6, the switch S5 transmits a temperature signal detected by the temperature sensor to the resistor R7, a smoke signal detected by the smoke sensor is transmitted to the OR gate U2A through the switch S6, the temperature sensor can adopt an infrared temperature sensor with the model similar to OS136A-1, the smoke sensor can adopt a smoke sensor with the model similar to MQ-2, the output pin of the smoke sensor adopts a TTL output pin, the two sensors are both arranged in an energy storage grid, the temperature signal is transmitted to the operational amplifier U3B in two lands through the resistor R7, one path is directly transmitted to the same-phase end of the operational amplifier U3B, the other path is delayed by a resistor R9 and a capacitor C1 and then transmitted to the inverting terminal of an operational amplifier U3B, the operational amplifier U3B compares two paths of temperature signals, when the operational amplifier U3B conducts a diode D3, the detected temperature on the surface of the battery is rising, when an OR gate U2A conducts the diode D1, the temperature on the surface of the battery is rising or smoke or the two phenomena are simultaneously generated, the diode D1 outputs an alarm signal to a control terminal, the alarm signal conducts a relay K3, the relay K3 enables a switch S7 to be disconnected, then a push plate 12 moves away from a fixed plate 15 under the action of a spring, the relay K3 simultaneously enables a switch S8 to be closed and the switch S9 to be disconnected, an electromagnet 14 is in a power-off state when power is not supplied, an explosion bolt 42 is powered on at the moment, the explosion bolt 42 instantaneously provides electric energy for the explosion bolt 42, and a limit end cover 41 is not connected with an energy storage grid 3, the limiting end cover 41 does not limit the battery 01, and the battery 01 is pushed out of the energy storage grid 3, so that the safety control of thermal runaway of the battery is realized.
(3) Three wire breaks occurred in the wire group: when a commercial signal conducts the voltage-stabilizing tube D7, it is shown that three of the four wires in the wire group are broken due to expansion after thermal runaway of the battery, that is, the current and the signal are current signals of one wire, that is, the thermal runaway of the battery is not controlled, at the moment, the voltage-stabilizing tube D7 outputs an emergency signal, when the voltage-stabilizing tube D7 outputs the emergency signal, the emergency signal conducts the relay K3, the relay K3 turns off the switch S7, then the push plate 12 moves away from the fixed plate 15 under the action of the spring, the relay K3 simultaneously turns on the switch S8 and turns off the switch S9, the electromagnet 14 is not powered, that is, the power-off state is achieved, the explosion bolt 42 is powered on at the moment, the explosion bolt 42 is powered on instantly, the limit end cover 41 is not connected with the energy storage grid 3, the limit end cover 41 does not limit the battery 01, and the battery 01 is pushed out of the energy storage grid 3, so that the safety control of the thermal runaway of the battery is realized.
The primary detection circuit comprises a switch S1, one end of the switch S1 is connected with a lead 1, the other end of the switch S1 is respectively connected with an anode of a thyristor Q1 and a pin 8 of an AND gate U1A, a pin 6 of the AND gate U1A is respectively connected with one end of a switch S2 and an anode of the thyristor Q2, the other end of the switch S2 is connected with the lead 2, a pin 3 of the AND gate U1A is respectively connected with an anode of the thyristor Q3 and one end of the switch S3, the other end of the switch S3 is connected with the lead 3, a pin 2 of the AND gate U1A is respectively connected with one end of a switch S4 and an anode of the thyristor Q4, the other end of the switch Q4 is connected with the lead 4, an output end of the AND gate U1A is respectively connected with an input end of a NOT gate U2C and an anode of a diode D5, an output end of the NOT gate U2C is connected with an anode of a diode D6, a cathode of the diode D5 is connected with one end of a resistor R16, and the other end of the resistor R16 is connected with one end of a capacitor C3, the negative electrode of the diode D6 is respectively connected with one end of the relay K2, one end of the capacitor C2, the control electrode of the thyristor Q1, the control electrode of the thyristor Q2, the control electrode of the thyristor Q3 and the control electrode of the thyristor Q4, the cathode of the thyristor Q1 is connected with one end of the resistor R3, the cathode of the thyristor Q2 is connected with one end of the resistor R6, the cathode of the thyristor Q3 is connected with one end of the resistor R2, the cathode of the thyristor Q4 is connected with one end of the resistor R11, the other end of the resistor R11 is respectively connected with the other end of the resistor R2, the other end of the resistor R6, the other end of the resistor R3, the same-phase end of the operational amplifier U2B and one end of the resistor R5, the inverting end of the operational amplifier U2B is respectively connected with one end of the resistor R15 and one end of the resistor R12, the output end of the operational amplifier U2B is respectively connected with the other end of the resistor R12 and a pin 1 of the multiplier V1, and a pin 2 pin of the multiplier V1 is connected with the output end of the operational amplifier U4B, the output end of the multiplier V1 is connected with one end of a resistor R14, the other end of the resistor R14 is respectively connected with the inverting terminal of an operational amplifier U4B, one end of a resistor R10 and one end of the resistor R4, the other end of the resistor R4 is connected with a positive polarity power supply VCC, the non-inverting terminal of the operational amplifier U4B is connected with one end of a resistor R13, the other end of the resistor R13 is respectively connected with the other end of a resistor R5, the other end of a resistor R15, the other end of a capacitor C2, the other end of a relay K2 at the other end of a capacitor C3 and the other end of the resistor R10, and the two ends are connected with the ground in parallel.
The secondary detection circuit comprises a triode Q5, the base electrode of the triode Q5 is respectively connected with one end of a resistor R19, one end of a resistor R18, the negative electrode of a voltage regulator tube D7 and one end of a switch S7, the other end of the resistor R18 is connected with the output end of an operational amplifier U2B in the primary detection circuit and a pin 1 of a multiplier V1, the emitting electrode of the triode Q5 is respectively connected with the other end of the resistor R19, one end of a switch S8, one end of a switch S9 and the other end of a resistor R4 in the primary detection circuit and is connected with a positive polarity power supply VCC, the other end of the switch S9 is connected with an electromagnet 14, the other end of the switch S8 is connected with an explosion bolt 42, the collector electrode of the triode Q5 is respectively connected with the positive electrode of a diode D8 and one end of a resistor R8, the other end of the switch S7 is connected with the positive electrode of a diode D2, the negative electrode of the diode D2 is connected with one end of a relay K4, the positive electrode of the voltage regulator tube D7 is respectively connected with one end of a relay K3, a control terminal, the negative electrode of the diode D1 and the negative electrode of the diode D8, the output end of a gate U2A or the gate U2A, the 5 pins of the OR gate U2A are connected with the cathode of the diode D3, the 7 pins of the OR gate U2A are connected with one end of the switch S6, the other end of the switch S6 is connected with the smoke sensor, the anode of the diode D3 is connected with the output end of the operational amplifier U3B, the homophase end of the operational amplifier U3B is respectively connected with one end of the resistor R7 and one end of the resistor R9, the other end of the resistor R9 is respectively connected with one end of the capacitor C1 and the inverting end of the operational amplifier U3B, the other end of the resistor R7 is connected with one end of the switch S5, the other end of the switch S5 is connected with the smoke sensor, the other end of the capacitor C1 is respectively connected with the other end of the resistor R8, the other end of the relay K3, the other end of the relay K4 and the other end of the relay K2 in the primary detection circuit and connected with the ground in parallel.
The application also comprises a working method of the thermal runaway emergency management system of the battery of the energy storage power station, which comprises the following steps.
S1: and winding and fixing the lead group on the surface of the battery.
S2: the thermal runaway detection module monitors the current in the lead group in real time and judges whether the lead is broken or not.
S3: if the lead is not broken, the thermal runaway detection module does not perform subsequent processing.
S4: if any one of the leads is broken, the thermal runaway detection module sends a reminding signal to the control terminal.
S5: if any two leads are broken and the thermal runaway detection module monitors that the surface temperature of the battery rises and/or smoke appears, the emergency management system pushes out the battery and sends out an alarm signal at the same time.
S6: if any three wires are broken, the emergency management system directly pushes out the battery and simultaneously sends out an emergency signal without referring to signals of a temperature sensor and/or a smoke sensor.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The emergency management system for the thermal runaway of the battery of the energy storage power station is characterized by comprising a battery holding mechanism, a battery monitoring device and a thermal runaway detection module; a plurality of energy storage cabinets (2) are arranged in the energy storage power station, the energy storage cabinets (2) are divided into a plurality of energy storage grids (3) by partition plates, bottom plates of the energy storage grids (3) are arranged in an inclined mode, and batteries (01) are arranged in the energy storage grids (3); the battery holding mechanism comprises a fixing mechanism (4) and an ejection mechanism, the fixing mechanism (4) is used for fixing the battery (01) in the energy storage grid (3), and the battery monitoring device is wound on the surface of the battery; when the thermal runaway detection module monitors that the volume of the battery (01) changes through the battery monitoring device, the ejection mechanism is controlled to push the thermally-failed battery (01) out of the energy storage grid (3).
2. The emergency management system for thermal runaway of the battery of the energy storage power station as claimed in claim 1, characterized in that: fixed establishment (4) are including spacing end cover (41) mounting panel (5), spacing arm (6), mounting panel (5) set up on the bottom plate of energy storage check (3), mounting panel (5) are on a parallel with the bottom plate of energy storage check (3), spacing arm (6) are provided with two, two spacing arm (6) all rotate in mounting panel (5) are kept away from the side of the bottom plate of energy storage check (3), the pivot perpendicular to of spacing arm (6) mounting panel (5), the one end that its pivot was kept away from in spacing arm (6) is followed and is extended the opening part of energy storage check (3), two spacing arm (6) about mounting panel (5) symmetry sets up, the one end that its pivot was kept away from in spacing arm (6) is provided with spacing flange (7), two spacing flange (7) are just to setting up, spacing end cover (41) set up the opening part in energy storage check (3) through explosion bolt (42).
3. The emergency management system for thermal runaway of the battery of the energy storage power station as claimed in claim 2, characterized in that: the limiting arm (6) is provided with a torsion spring at the rotating shaft, and under the action of the torsion spring, the two ends of the limiting arm (6) far away from the rotating shaft are close to each other.
4. The emergency management system for thermal runaway of an energy storage power station battery of claim 3, wherein: the two ends of the length direction of the limiting arm (6) are respectively provided with one bearing block (8), the bearing blocks (8) are arranged below the limiting arm (6), and the batteries (01) are arranged on the four bearing blocks (8).
5. The emergency management system for thermal runaway of batteries of energy storage power stations as claimed in claim 4, wherein: the monitoring device comprises a lead group (10) and an emergency management system, wherein the lead group (10) comprises four leads connected in parallel, the lead group (10) is wound on a battery (01), the lead group (10) is connected with the emergency management system in series, and the emergency management system is used for controlling and triggering the ejection mechanism.
6. The emergency management system for thermal runaway of batteries of energy storage power stations as claimed in claim 5, wherein: ejection mechanism includes push pedal (12), magnetism piece (13), electro-magnet (14), fixed plate (15) of inhaling, fixed plate (15) set up perpendicularly on mounting panel (5), push pedal (12) slide to set up on fixed plate (15), push pedal (12) with fixed plate (15) are parallel, push pedal (12) with be provided with the spring between fixed plate (15), magnetism piece (13) are inhaled and are fixed on push pedal (12), electro-magnet (14) are fixed on fixed plate (15), magnetism piece (13) of inhaling with electro-magnet (14) correspond magnetism and inhale together, electro-magnet (14) with emergency management system connects.
7. The emergency management system for thermal runaway of an energy storage power station battery of claim 6, wherein: spacing arm (6) are close to the one end of its pivot and still are provided with unlocking plate (9), unlocking plate (9) set up spacing arm (6) orientation the side of push pedal (12), unlocking plate (9) be located battery (01) with between push pedal (12), unlocking plate (9) with spacing arm (6) form the acute angle contained angle, unlocking plate (9) are kept away from the tip directional battery (01) of spacing arm (6).
8. The emergency management system for thermal runaway of the battery of the energy storage power station as claimed in claim 1, characterized in that: the thermal runaway detection module comprises a primary detection circuit and a secondary detection circuit, wherein the primary detection circuit and the secondary detection circuit output signals to other parts of the emergency management system according to the current change of the lead group, namely one end of the primary detection circuit is connected with the lead group, the other end of the primary detection circuit is connected with one end of the secondary detection circuit, and the other end of the secondary detection circuit is respectively connected with a temperature sensor, a smoke sensor, an electromagnet (14) and an explosion bolt (42).
9. The emergency management system for thermal runaway of batteries of energy storage power stations as claimed in claim 8, wherein: the primary detection circuit comprises a switch S1, one end of the switch S1 is connected with a lead 1, the other end of the switch S1 is respectively connected with an anode of a thyristor Q1 and a pin 8 of an AND gate U1A, a pin 6 of the AND gate U1A is respectively connected with one end of a switch S2 and an anode of the thyristor Q2, the other end of the switch S2 is connected with the lead 2, a pin 3 of the AND gate U1A is respectively connected with an anode of the thyristor Q3 and one end of the switch S3, the other end of the switch S3 is connected with the lead 3, a pin 2 of the AND gate U1A is respectively connected with one end of a switch S4 and an anode of the thyristor Q4, the other end of the switch Q4 is connected with the lead 4, an output end of the AND gate U1A is respectively connected with an input end of a NOT gate U2C and an anode of a diode D5, an output end of the NOT gate U2C is connected with an anode of a diode D6, a cathode of the diode D5 is connected with one end of a resistor R16, and the other end of the resistor R16 is connected with one end of a capacitor C3, the negative electrode of the diode D6 is respectively connected with one end of the relay K2, one end of the capacitor C2, the control electrode of the thyristor Q1, the control electrode of the thyristor Q2, the control electrode of the thyristor Q3 and the control electrode of the thyristor Q4, the cathode of the thyristor Q1 is connected with one end of the resistor R3, the cathode of the thyristor Q2 is connected with one end of the resistor R6, the cathode of the thyristor Q3 is connected with one end of the resistor R2, the cathode of the thyristor Q4 is connected with one end of the resistor R11, the other end of the resistor R11 is respectively connected with the other end of the resistor R2, the other end of the resistor R6, the other end of the resistor R3, the same-phase end of the operational amplifier U2B and one end of the resistor R5, the inverting end of the operational amplifier U2B is respectively connected with one end of the resistor R15 and one end of the resistor R12, the output end of the operational amplifier U2B is respectively connected with the other end of the resistor R12 and a pin 1 of the multiplier V1, and a pin 2 pin of the multiplier V1 is connected with the output end of the operational amplifier U4B, the output end of the multiplier V1 is connected with one end of a resistor R14, the other end of the resistor R14 is respectively connected with the inverting terminal of an operational amplifier U4B, one end of a resistor R10 and one end of the resistor R4, the other end of the resistor R4 is connected with a positive polarity power supply VCC, the non-inverting terminal of the operational amplifier U4B is connected with one end of a resistor R13, the other end of the resistor R13 is respectively connected with the other end of a resistor R5, the other end of a resistor R15, the other end of a capacitor C2, the other end of a relay K2 at the other end of a capacitor C3 and the other end of the resistor R10, and the two ends are connected with the ground in parallel.
10. The emergency management system for thermal runaway of an energy storage power station battery of claim 8, wherein: the secondary detection circuit comprises a triode Q5, the base electrode of the triode Q5 is respectively connected with one end of a resistor R19, one end of a resistor R18, the negative electrode of a voltage-regulator tube D7 and one end of a switch S7, the other end of the resistor R18 is connected with the output end of an operational amplifier U2B in the primary detection circuit and a pin 1 of a multiplier V1, the emitting electrode of the triode Q5 is respectively connected with the other end of the resistor R19, one end of a switch S8, one end of a switch S9 and the other end of a resistor R4 in the primary detection circuit and is connected with a positive polarity power supply VCC, the other end of the switch S9 is connected with an electromagnet 14, the other end of the switch S8 is connected with an explosion bolt 43, the collector electrode of the triode Q5 is respectively connected with the positive electrode of a diode D8 and one end of a resistor R8, the other end of the switch S7 is connected with the positive electrode of a diode D2, the negative electrode of the diode D2 is connected with one end of a relay K4, the positive electrode of the voltage-regulator tube D7 is respectively connected with one end of a relay K3, a control terminal, the negative electrode of the diode D1 and the negative electrode of a diode D8, the positive electrode of the diode D1 is connected with the output end of a gate U2A or the output end of a gate U2A, pin 5 of or gate U2A is connected to the negative electrode of diode D3, pin 7 of or gate U2A is connected to one end of switch S6, the other end of switch S6 is connected to a smoke sensor, the positive electrode of diode D3 is connected to the output end of operational amplifier U3B, the non-inverting terminal of operational amplifier U3B is connected to one end of resistor R7 and one end of resistor R9, the other end of resistor R9 is connected to one end of capacitor C1 and the inverting terminal of operational amplifier U3B, the other end of resistor R7 is connected to one end of switch S5, the other end of switch S5 is connected to a smoke sensor, the other end of capacitor C1 is connected to the other end of resistor R8, the other end of relay K3, the other end of relay K4, and the other end of relay K2 in the primary detection circuit and connected to ground.
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