CN109713190A - There are two types of the explosion-proof lithium battery power supplys and its working method of output type for a kind of tool - Google Patents
There are two types of the explosion-proof lithium battery power supplys and its working method of output type for a kind of tool Download PDFInfo
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- CN109713190A CN109713190A CN201910106428.7A CN201910106428A CN109713190A CN 109713190 A CN109713190 A CN 109713190A CN 201910106428 A CN201910106428 A CN 201910106428A CN 109713190 A CN109713190 A CN 109713190A
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000000203 mixture Substances 0.000 claims abstract description 57
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000005538 encapsulation Methods 0.000 claims abstract description 16
- 229910001416 lithium ion Inorganic materials 0.000 claims abstract description 16
- 238000007599 discharging Methods 0.000 claims description 73
- 238000012544 monitoring process Methods 0.000 claims description 33
- 238000002955 isolation Methods 0.000 claims description 16
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 238000005266 casting Methods 0.000 claims description 11
- 231100001261 hazardous Toxicity 0.000 claims description 11
- 239000004020 conductor Substances 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 4
- 238000005070 sampling Methods 0.000 claims description 3
- 238000011017 operating method Methods 0.000 claims 4
- 230000007246 mechanism Effects 0.000 abstract description 7
- 238000005192 partition Methods 0.000 abstract 1
- 230000001012 protector Effects 0.000 abstract 1
- 239000002360 explosive Substances 0.000 description 8
- 238000007789 sealing Methods 0.000 description 5
- 239000003245 coal Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a kind of tool, there are two types of the explosion-proof lithium battery power supplys and its working method of output type; the explosion-proof lithium battery power supply includes power supply body and outer protection system; outer protection system is made of intrinsic safety type dangerous mixtures concentration monitor with power protection system, and power supply body includes explosion-proof electrical source shell and encapsulation mould group；Working method are as follows: battery modules are through electric discharge anode, electric discharge cathode, charging anode and charging cathode and external charge and discharge; the on-off of battery management system and intrinsic safety type dangerous mixtures concentration monitor and power protection system control encapsulation module internal controllable switch unit, realizes the different output types of lithium battery power supply.The invention has the advantages that protecting explosive-proof protector method, multiple electic protection mechanism and a variety of circuit partition methods combined using encapsulation protection, safety protection and flame proof; the limitation that lithium ion battery power supply is used in danger zones such as similar " 0 " areas is efficiently solved, the application range of lithium ion battery power supply has been expanded.
Description
Technical Field
The invention relates to the field of application of lithium battery power supplies in an explosive mixture environment, in particular to an explosion-proof lithium battery power supply with two output types and a working method thereof.
Background
At present, most of high-power battery power supplies used in an explosive mixture environment are lead-acid batteries which have the defects of less energy storage, large volume and the like, and the safety of the explosive mixture environment is seriously influenced due to the hydrogen evolution side reaction in the charging process. With the increasing demand of hazardous mixture monitoring and controlling systems and other electric equipment such as handheld equipment, auxiliary transportation equipment and the like on the capacity of storage batteries in explosive mixture environments, industrial production tends to select lithium ion batteries with higher energy. However, the greater the battery capacity, the more energy stored, and the more factors affecting safety performance, thus placing more stringent explosion protection requirements on the use of lithium ion batteries in explosive mixture environments. Most of the currently used flameproof and intrinsically safe lithium ion power sources or applied patents only have intrinsic safety type output or non-intrinsic safety type output, the requirements of various power utilization units such as intrinsic safety systems and non-intrinsic safety systems cannot be met simultaneously, and the explosion-proof protection level cannot meet the requirements of dangerous places like '0' zones.
Disclosure of Invention
The invention aims to provide an explosion-proof lithium battery power supply with two output types and a working method thereof according to the defects of the prior art, wherein the explosion-proof lithium battery power supply comprises a power supply body and an external protection system, the external protection system consists of an intrinsic safety type dangerous mixture concentration monitoring and power supply protection system, and the power supply body comprises an explosion-proof power supply shell and a pouring and sealing module; the working method comprises the following steps: the battery module carries out charge and discharge through positive pole, the negative pole that discharges, the positive pole that charges and the negative pole that charges and outside, and battery management system and this ampere of dangerous mixture concentration monitoring and power protection system control inside controllable switch unit's break-make to realize lithium battery power's this ampere of output.
The purpose of the invention is realized by the following technical scheme:
the utility model provides an explosion-proof lithium battery power supply with two kinds of output types which characterized in that explosion-proof lithium battery power supply includes power supply body and outside protection system, power supply body includes explosion-proof power supply housing and assembles the inside module of casting of explosion-proof power supply housing, wherein:
the pouring module comprises a battery module, the anode of the battery module is electrically connected with the discharging anode controllable switch unit and the charging anode controllable switch unit, and the cathode of the battery module is electrically connected with the discharging cathode controllable switch unit and the charging cathode controllable switch unit.
The controllable switch unit of positive pole that discharges, the controllable switch unit of negative pole that discharges, the controllable switch unit of positive pole that charges with the controllable switch unit of negative pole that charges is in proper order through fuse unit and isolator and the positive pole that discharges, the negative pole that discharges, the positive pole that charges and the negative pole that charges correspond and be connected.
The pouring module also comprises a battery management system electrically connected with the battery module through a battery information sampling circuit, wherein a power supply positive electrode of the battery management system is connected with a first end of a positive electrode controllable switch unit for power supply of the battery management system, a second end of the positive electrode controllable switch unit for power supply of the battery management system is connected with a positive electrode of the battery module, a power supply negative electrode of the battery management system is connected with a first end of a negative electrode controllable switch unit for power supply of the battery management system, and a second end of the negative electrode controllable switch unit for power supply of the battery management system is connected with a negative electrode of the battery module;
control signals of the battery management system are respectively output to the discharging anode controllable switch unit, the discharging cathode controllable switch unit, the charging anode controllable switch unit and the charging cathode controllable switch unit so as to control the on and off of the discharging anode controllable switch unit, the discharging cathode controllable switch unit, the charging cathode controllable switch unit and the charging cathode controllable switch unit;
the encapsulation module also comprises an intrinsic safety power supply conversion circuit, wherein the input positive electrode of the intrinsic safety power supply conversion circuit is connected with the positive electrode of the battery module, and the input negative electrode of the intrinsic safety power supply conversion circuit is connected with the negative electrode of the battery module;
the external protection system comprises an intrinsic safety type dangerous mixture concentration monitoring and power protection system connected with the intrinsic safety type power conversion circuit, and the battery management system is connected and communicated with the intrinsic safety type dangerous mixture concentration monitoring and power protection system through a communication line;
the control signals of the intrinsically safe dangerous mixture concentration monitoring and power protection system are respectively output to the discharging anode controllable switch unit, the discharging cathode controllable switch unit, the charging anode controllable switch unit, the charging cathode controllable switch unit, the power management system power supply anode controllable switch unit and the power system power supply cathode controllable switch unit so as to control the on and off of the discharging anode controllable switch unit, the discharging cathode controllable switch unit, the charging anode controllable switch unit, the charging cathode controllable switch unit, the power management system power supply anode controllable switch unit and the power system power supply cathode controllable switch unit.
The pouring module further comprises a safety isolation circuit, the input positive electrode of the safety isolation circuit is connected with the positive electrode of the battery module, and the input negative electrode of the safety isolation circuit is connected with the negative electrode of the battery module.
The casting module further comprises an internal protection circuit, and the internal protection circuit is electrically connected with the safety isolation circuit.
The interior of the explosion-proof power supply shell is divided into a pouring cavity and an explosion-proof cavity; wherein,
the pouring module is assembled in the pouring cavity;
the explosion-proof intracavity is equipped with the fuse unit, the fuse unit including connect in discharge anodal controllable switch unit with discharge anodal between the positive pole, connect in discharge negative pole controllable switch unit with discharge negative pole fuse between the negative pole, connect in charge anodal controllable switch unit with charge anodal between the positive pole and connect in charge negative pole controllable switch unit with charge negative pole fuse between the negative pole.
The explosion-proof intracavity still is equipped with a set of quadrupole isolator, quadrupole isolator's first side connects gradually positive fuse discharges, discharge negative pole fuse, the positive fuse that charges and the negative fuse that charges, quadrupole isolator's second side corresponds and connects the positive that discharges the negative pole charge the positive and the negative pole that charges.
The working method of the explosion-proof lithium battery power supply with two output types is as follows: the battery module is charged and discharged with the outside through a discharging positive electrode, a discharging negative electrode, a charging positive electrode and a charging negative electrode; the battery management system monitors the battery module and controls the discharge anode controllable switch unit, the discharge cathode controllable switch unit, the charge anode controllable switch unit and the charge cathode controllable switch unit to be switched on and off; the safety type dangerous mixture concentration monitoring and power protection system detects the concentration of dangerous mixtures in the environment in real time and controls the turning-on and turning-off of the discharging positive electrode controllable switch unit, the discharging negative electrode controllable switch unit, the charging positive electrode controllable switch unit, the charging negative electrode controllable switch unit, the power supply management system power supply positive electrode controllable switch unit and the power supply system power supply negative electrode controllable switch unit.
In the battery module carries out charge-discharge process with the outside, when the line current surpassed fuse unit's threshold value, fuse unit automatic fusing is in order to realize the cutting off of corresponding circuit.
Under the condition that the concentration of the dangerous mixture is not over-limit, the explosion-proof lithium battery power supply with two output types works normally, so that intrinsic safety and non-intrinsic safety output are realized, and the power supply requirements of different equipment are met; under the condition that hazardous mixture concentration transfinites, this ampere of dangerous mixture concentration monitoring and power protection system direct control positive controllable switch unit discharges discharge negative controllable switch unit charge positive controllable switch unit and the negative controllable switch unit that charges is turn-offed, this ampere of output can only be realized to multi-functional explosion-proof lithium ion battery power supply, give this ampere of dangerous mixture concentration monitoring and power protection system power supply, and the rest system is except that the explosion-proof module inner part of encapsulation, and all other exposed conductor parts are all not electrified.
Under the condition that hazardous mixture concentration transfinites, this ampere of dangerous mixture concentration monitoring and power protection system control power management system power supply positive controllable switch element and the controllable switch element of electrical power system power supply negative pole turn-offs, battery management system loses the electricity, and then makes discharge positive controllable switch element discharge the controllable switch element of negative pole charge positive controllable switch element and the controllable switch element of negative pole that charges turns off, a multi-functional explosion-proof lithium ion battery power can only realize this ampere of output, gives this ampere of dangerous mixture concentration monitoring and power protection system power supply, and the remaining system is except that the explosion-proof module inner part of pouring seal, and other all exposed conductor parts are all not electrified.
The invention has the advantages that: the explosion-proof lithium battery power supply with two output types is formed by adopting an explosion-proof protection method combining pouring protection, intrinsic safety protection and explosion-proof protection, a multiple electrical protection mechanism and multiple circuit isolation methods, so that the limitation that the power supply formed by lithium batteries is used in dangerous areas such as a similar '0' area at present is effectively solved, and the application range of the lithium ion battery power supply in industrial places with explosive dangerous mixture environments, such as underground coal mines, petrochemical industry enterprise production areas and the like, is expanded to a great extent.
Drawings
Fig. 1 is a schematic structural diagram of an explosion-proof lithium battery power supply with two output types according to the present invention.
Detailed Description
The features of the present invention and other related features are described in further detail below by way of example in conjunction with the following drawings to facilitate understanding by those skilled in the art:
referring to fig. 1, the symbols 1-28 in the figure are: a power supply body 1, an external protection system 2, an explosion-proof power supply shell 3, an encapsulation cavity 4, an explosion-proof cavity 5, an encapsulation module 6, a battery module 7, a discharging anode controllable switch unit 8, a discharging cathode controllable switch unit 9, a charging anode controllable switch unit 10, a charging cathode controllable switch unit 11, a fuse unit 12, a discharging anode fuse 13 and a discharging cathode fuse 14, the system comprises a charging positive electrode fuse 15, a charging negative electrode fuse 16, a quadrupole isolating switch 17, a discharging positive electrode 18, a discharging negative electrode 19, a charging positive electrode 20, a charging negative electrode 21, a battery management system 22, a battery management system power supply positive electrode controllable switch unit 23, a battery management system power supply negative electrode controllable switch unit 24, a safety isolating circuit 25, an internal protection circuit 26, an intrinsic safety power supply conversion circuit 27 and an intrinsic safety type dangerous mixture concentration monitoring and power supply protection system 28.
Example (b): as shown in fig. 1, the embodiment specifically relates to an explosion-proof lithium battery power supply with two output types and a working method thereof, the explosion-proof lithium battery power supply comprises a power supply body 1 and an external protection system 2, the power supply body 1 comprises an explosion-proof power supply housing 3 and an encapsulation module 6, and the external protection system 2 is composed of an intrinsic safety type hazardous mixture concentration monitoring and power supply protection system 28; the working method comprises the following steps: the battery module 7 is charged and discharged with the outside through the discharging anode 18, the discharging cathode 19, the charging anode 20 and the charging cathode 21, the battery management system 22 and the intrinsically safe dangerous mixture concentration monitoring and power protection system 28 control the on-off of the controllable switch unit in the encapsulation module 6, and different output types of the lithium battery power supply are realized by matching the isolation function of the isolation circuit.
As shown in fig. 1, the explosion-proof lithium battery power supply in this embodiment includes a power supply body 1 and an external protection system 2, wherein the power supply body 1 includes an explosion-proof power supply housing 3, which plays roles of sealing protection and explosion protection, an internal space of the explosion-proof power supply housing 3 is divided into a casting cavity 4 and an explosion-proof cavity 5, a casting module 6 is assembled in the casting cavity 4, and a fuse unit 12 and a four-pole isolating switch 17 are disposed in the explosion-proof cavity 4, wherein the casting module 6 adopts a casting explosion-proof protection mode to effectively block direct contact between all charged components and the surrounding environment, so that the charged components cannot ignite surrounding explosive mixtures under normal operation and authorized overload or authorized faults.
As shown in fig. 1, the encapsulation module 6 includes a battery module 7, and the battery module 7 is formed by connecting a plurality of single lithium batteries in series so as to realize a larger capacity and a voltage class meeting the use requirement; the fuse unit 12 comprises a discharging anode fuse 13, a discharging cathode fuse 14, a charging anode fuse 15 and a charging cathode fuse 16, wherein the anode of the battery module 7 is respectively connected with the first end of the discharging anode controllable switch unit 8 and the first end of the charging anode controllable switch unit 10, the second end of the discharging anode controllable switch unit 8 is connected with the first end of the discharging anode fuse 13, the second end of the discharging anode fuse 13 is connected with a discharging anode 18 after passing through a quadrupole isolating switch 17, the second end of the charging anode controllable switch unit 10 is connected with the first end of the charging anode fuse 15, the second end of the charging anode fuse 15 is connected with a charging anode 20 after passing through the quadrupole isolating switch 17, the power supply cathode of the battery module 7 is respectively connected with the first end of the discharging cathode controllable switch unit 9 and the first end of the charging cathode controllable switch unit 11, the second end of the discharging cathode controllable switch unit 9 is connected with the first end of the discharging cathode fuse 14, the second end of the discharging cathode fuse 14 is connected with the discharging cathode 19 after passing through the quadrupole isolating switch 17, the second end of the charging cathode controllable switch unit 11 is connected with the first end of the charging cathode fuse 16, and the second end of the charging cathode fuse 16 is connected with the charging cathode 21 after passing through the quadrupole isolating switch 17, so that the charging and discharging of the battery module 7 and an external circuit are realized; when the battery module 7 is charged and discharged with the outside, if the line current exceeds the threshold value of the fuse unit, the fuse unit 12 is automatically fused to cut off the corresponding line; in addition, when the lithium battery power supply is maintained, the four-pole isolating switch 17 is switched off to ensure that the battery module 7 is not charged or discharged with the outside, and the operation safety is ensured.
As shown in fig. 1, the encapsulation module 6 further includes a battery management system 22, a power supply positive electrode of the battery management system 22 is connected to a first end of a battery management system power supply positive electrode controllable switch unit 23, a second end of the battery management system power supply positive electrode controllable switch unit 23 is connected to a positive electrode of the battery module 7, a power supply negative electrode of the battery management system 22 is connected to a first end of a battery management system power supply negative electrode controllable switch unit 24, and a second end of the battery management system power supply negative electrode controllable switch unit 24 is connected to a negative electrode of the battery module 7, so that the battery module 7 supplies power to the battery management system 22 and can normally operate; the battery management system 22 is connected with the battery module 7 through a battery information sampling circuit to collect information such as voltage, current and battery surface temperature of all single batteries in the battery module 7, monitor the state of the batteries in real time, and output corresponding control signals to control the on and off of the discharging anode controllable switch unit 8, the discharging cathode controllable switch unit 9, the charging anode controllable switch unit 10 and the charging cathode controllable switch unit 11, so as to realize timely power-off protection.
As shown in fig. 1, the encapsulation module 6 further includes a safety isolation circuit 25, an input positive electrode of the safety isolation circuit 25 is connected with a positive electrode of the battery module 7, and an input negative electrode of the safety isolation circuit 25 is connected with a negative electrode of the battery module 7; the safety isolation circuit 25 is also connected to an internal protection circuit 26 to protect the battery module 7 from overcharge, overdischarge, overcurrent, short circuit, and the like.
As shown in fig. 1, the encapsulation module 6 further includes an intrinsically safe power conversion circuit 27, an input positive electrode and an input negative electrode of which are respectively and correspondingly connected with a positive electrode and a negative electrode of the battery module 7, and a conversion output end of the intrinsically safe power conversion circuit 27 is connected with the intrinsically safe dangerous mixture concentration monitoring and power protection system 28 in the external protection system 2, so that the intrinsically safe output power of the battery module 7 is supplied to the intrinsically safe dangerous mixture concentration monitoring and power protection system 28, and the battery module can normally operate and ensure an explosion-proof effect; the intrinsically safe hazardous mixture concentration monitoring and power protection system 28 can detect the concentration of a hazardous mixture in the environment through the hazardous mixture sensor, and outputs corresponding control signals according to the detected concentration of the hazardous mixture to control the on or off of the discharging positive electrode controllable switch unit 8, the discharging negative electrode controllable switch unit 9, the charging positive electrode controllable switch unit 10, the charging negative electrode controllable switch unit 11, the battery management system power supply positive electrode controllable switch unit 23 and the battery management system power supply negative electrode controllable switch unit 25, so that the timely power-off protection is realized; the battery management system 22 may be in communication with the intrinsically safe hazardous mixture concentration monitoring and power protection system 28 via a communication link.
As shown in fig. 1, the discharging positive controllable switch unit 8, the discharging negative controllable switch unit 9, the charging positive controllable switch unit 10, the charging negative controllable switch unit 11, the battery management system power supply positive controllable switch unit 23, and the battery management system power supply negative controllable switch unit 24 in this embodiment may be composed of a single controllable switch element (e.g., a relay), may be composed of a combination of a plurality of controllable switch elements, or may be composed of a combination of a controllable switch element and a fuse.
As shown in fig. 1, when the connection lines in this embodiment pass through the housing of the explosion-proof power supply housing 3, the connection lines are connected by the lead device with the sealing function provided on the housing, and when the connection lines in the encapsulation module 6 pass out, the connection lines are also connected by the lead device with the sealing function provided thereon, so as to improve the explosion-proof performance.
As shown in fig. 1, the working method of the explosion-proof lithium battery power supply with two output types in the embodiment is as follows:
(1) the battery module 7 is charged and discharged with the outside through the discharge positive electrode 18, the discharge negative electrode 19, the charge positive electrode 20, and the charge negative electrode 21;
(2) the battery module 7 supplies power to the intrinsically safe dangerous mixture concentration monitoring and power protection system 28 through the intrinsically safe power conversion circuit 27;
(3) the battery module 7 supplies power to the battery management system 22 through the battery management system power supply positive electrode controllable switch unit 23 and the battery management system power supply negative electrode controllable switch unit 24, and the battery management system 22 monitors information such as voltage, current, battery surface temperature and the like of all single batteries in the battery module 7 in real time;
(4) in the process of charging and discharging the battery module 7 and the outside, when the line current exceeds the threshold value of the fuse unit 12, the fuse unit 12 is automatically fused to cut off the corresponding line;
(5) when the lithium battery power supply is maintained, the electric quadrupole isolating switch 17 is manually switched off so as to ensure that the battery module 7 is not externally charged and discharged and ensure the operation safety;
(6) implementation of multiple electrical protection mechanisms:
(6.1) when the intrinsically safe dangerous mixture concentration monitoring and power protection system 28 detects that the concentration of the dangerous mixture exceeds the limit, the intrinsically safe dangerous mixture concentration monitoring and power protection system can directly control the discharging positive electrode controllable switch unit 8, the discharging negative electrode controllable switch unit 9, the charging positive electrode controllable switch unit 10 and the charging negative electrode controllable switch unit 11 to be turned off, at the moment, the power supply of the explosion-proof lithium ion battery can only realize intrinsically safe output, and all other exposed conductor parts of the rest system except for the inner components of the explosion-proof module are not electrified, so that the protection mechanism is a first heavy protection mechanism;
(6.2) when the intrinsically safe dangerous mixture concentration monitoring and power protection system 28 detects that the concentration of the dangerous mixture exceeds the limit, the intrinsically safe dangerous mixture monitoring and power protection system can communicate with the battery management system 22 to command the battery management system 22 to output control signals to control the discharging positive electrode controllable switch unit 8, the discharging negative electrode controllable switch unit 9, the charging positive electrode controllable switch unit 10 and the charging negative electrode controllable switch unit 11 to be turned off, at the moment, the power supply of the explosion-proof lithium ion battery can only realize intrinsically safe output, and all other exposed conductor parts of the rest system except for the internal components of the explosion-proof module are not electrified, so that the rest system is a second protection mechanism;
(6.3) when the intrinsically safe dangerous mixture concentration monitoring and power protection system 28 detects that the concentration of the dangerous mixture exceeds the concentration, the intrinsically safe dangerous mixture monitoring and power protection system can control the power supply positive electrode controllable switch unit 23 and the power supply negative electrode controllable switch unit 24 of the battery management system, which are connected with the battery management system 22, to be turned off, so that the power supply of the battery management system 22 is cut off, the battery management system 22 does not work any more due to power loss, and further the discharging positive electrode controllable switch unit 8, the discharging negative electrode controllable switch unit 9, the charging positive electrode controllable switch unit 10 and the charging negative electrode controllable switch unit 11 are turned off, at the moment, the intrinsically safe output of the explosion-proof lithium ion battery power supply can be realized, and all other exposed conductor parts of the rest system except for the pouring and sealing of the internal components of the explosion-proof module are.
The beneficial effect of this embodiment is: the explosion-proof lithium ion battery power supply with two output types is formed by adopting an explosion-proof protection method combining pouring protection, intrinsic safety protection and explosion-proof protection, a multiple electrical protection mechanism and multiple circuit isolation methods, so that the limitation that the power supply formed by the lithium ion battery is used in dangerous areas such as a similar '0' area at present is effectively solved, and the use of the lithium ion battery power supply in industrial places with explosive dangerous mixture environments such as underground coal mines, petrochemical industry enterprise production areas and the like is greatly expanded.
Claims (7)
1. The utility model provides an explosion-proof lithium battery power supply with two kinds of output types which characterized in that explosion-proof lithium battery power supply includes power supply body and outside protection system, power supply body includes explosion-proof power supply housing and assembles the inside module of casting of explosion-proof power supply housing, wherein:
the pouring module comprises a battery module, the anode of the battery module is electrically connected with a discharging anode controllable switch unit and a charging anode controllable switch unit, and the cathode of the battery module is electrically connected with a discharging cathode controllable switch unit and a charging cathode controllable switch unit;
the discharging anode controllable switch unit, the discharging cathode controllable switch unit, the charging anode controllable switch unit and the charging cathode controllable switch unit are correspondingly connected with a discharging anode, a discharging cathode, a charging anode and a charging cathode through a fuse unit and an isolating switch in sequence;
the pouring module also comprises a battery management system electrically connected with the battery module through a battery information sampling circuit, wherein a power supply positive electrode of the battery management system is connected with a first end of a positive electrode controllable switch unit for power supply of the battery management system, a second end of the positive electrode controllable switch unit for power supply of the battery management system is connected with a positive electrode of the battery module, a power supply negative electrode of the battery management system is connected with a first end of a negative electrode controllable switch unit for power supply of the battery management system, and a second end of the negative electrode controllable switch unit for power supply of the battery management system is connected with a negative electrode of the battery module;
control signals of the battery management system are respectively output to the discharging anode controllable switch unit, the discharging cathode controllable switch unit, the charging anode controllable switch unit and the charging cathode controllable switch unit so as to control the on and off of the discharging anode controllable switch unit, the discharging cathode controllable switch unit, the charging cathode controllable switch unit and the charging cathode controllable switch unit;
the encapsulation module also comprises an intrinsic safety power supply conversion circuit, wherein the input positive electrode of the intrinsic safety power supply conversion circuit is connected with the positive electrode of the battery module, and the input negative electrode of the intrinsic safety power supply conversion circuit is connected with the negative electrode of the battery module;
the external protection system comprises an intrinsic safety type dangerous mixture concentration monitoring and power protection system connected with the intrinsic safety type power conversion circuit, and the battery management system is connected and communicated with the intrinsic safety type dangerous mixture concentration monitoring and power protection system through a communication line;
control signals of the intrinsically safe hazardous mixture concentration monitoring and power supply protection system are respectively output to the discharging anode controllable switch unit, the discharging cathode controllable switch unit, the charging anode controllable switch unit, the charging cathode controllable switch unit, the power supply management system power supply anode controllable switch unit and the power supply system power supply cathode controllable switch unit so as to control the on and off of the discharging anode controllable switch unit, the discharging cathode controllable switch unit, the charging anode controllable switch unit, the charging cathode controllable switch unit, the power supply management system power supply anode controllable switch unit and the power supply system power supply;
the casting module also comprises a safety isolation circuit, wherein the input positive electrode of the safety isolation circuit is connected with the positive electrode of the battery module, and the input negative electrode of the safety isolation circuit is connected with the negative electrode of the battery module;
the casting module further comprises an internal protection circuit, and the internal protection circuit is electrically connected with the safety isolation circuit.
2. The explosion-proof lithium battery power supply with two output types as claimed in claim 1, wherein the inside of the explosion-proof power supply housing is divided into a casting chamber and an explosion-proof chamber; wherein,
the pouring module is assembled in the pouring cavity;
the explosion-proof intracavity is equipped with the fuse unit, the fuse unit including connect in discharge anodal controllable switch unit with discharge anodal between the positive pole, connect in discharge negative pole controllable switch unit with discharge negative pole fuse between the negative pole, connect in charge anodal controllable switch unit with charge anodal between the positive pole and connect in charge negative pole controllable switch unit with charge negative pole fuse between the negative pole.
3. The explosion-proof lithium battery power supply with two output types according to claim 2, characterized in that a quadrupole isolating switch is further assembled in the explosion-proof cavity, a first side of the quadrupole isolating switch is sequentially connected with the discharging anode fuse, the discharging cathode fuse, the charging anode fuse and the charging cathode fuse, and a second side of the quadrupole isolating switch is correspondingly connected with the discharging anode, the discharging cathode, the charging anode and the charging cathode.
4. An operating method relating to an explosion-proof lithium battery power supply of any one of claims 1 to 3 having two output types, characterized in that the operating method is as follows: the battery module is charged and discharged with the outside through a discharging positive electrode, a discharging negative electrode, a charging positive electrode and a charging negative electrode; the battery management system monitors the battery module and controls the discharge anode controllable switch unit, the discharge cathode controllable switch unit, the charge anode controllable switch unit and the charge cathode controllable switch unit to be switched on and off; the safety type dangerous mixture concentration monitoring and power protection system detects the concentration of dangerous mixtures in the environment in real time and controls the turning-on and turning-off of the discharging positive electrode controllable switch unit, the discharging negative electrode controllable switch unit, the charging positive electrode controllable switch unit, the charging negative electrode controllable switch unit, the power supply management system power supply positive electrode controllable switch unit and the power supply system power supply negative electrode controllable switch unit.
5. The operating method of an explosion-proof lithium battery power supply with two output types as claimed in claim 4, wherein the fuse unit automatically fuses to cut off the corresponding line when the line current exceeds the threshold value of the fuse unit during the charging and discharging process of the battery module and the outside.
6. The working method of the explosion-proof lithium battery power supply with two output types as claimed in claim 4, characterized in that under the condition that the concentration of the dangerous mixture is not over-limit, the explosion-proof lithium battery power supply with two output types works normally to realize two outputs of intrinsic safety and non-intrinsic safety so as to meet the power supply requirements of different devices; under the condition that hazardous mixture concentration transfinites, this ampere of dangerous mixture concentration monitoring and power protection system direct control positive controllable switch unit discharges discharge negative controllable switch unit charge positive controllable switch unit and the negative controllable switch unit that charges is turn-offed, this ampere of output can only be realized to multi-functional explosion-proof lithium ion battery power supply, give this ampere of dangerous mixture concentration monitoring and power protection system power supply, and the rest system is except that the explosion-proof module inner part of encapsulation, and all other exposed conductor parts are all not electrified.
7. The operating method of an explosion-proof lithium battery power supply having two output types according to claim 4, the system is characterized in that under the condition that the concentration of the dangerous mixture exceeds the limit, the intrinsically safe dangerous mixture concentration monitoring and power protection system controls the power supply management system to switch off the power supply positive electrode controllable switch unit and the power supply system power supply negative electrode controllable switch unit, the battery management system loses power, thereby turning off the discharging anode controllable switch unit, the discharging cathode controllable switch unit, the charging anode controllable switch unit and the charging cathode controllable switch unit, the multifunctional explosion-proof lithium ion battery power supply can only realize intrinsic safety output and supply power to the intrinsic safety type dangerous mixture concentration monitoring and power supply protection system, and all other exposed conductor parts of the rest system are not electrified except the parts of the cast explosion-proof module.
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