CN114188654A

CN114188654A - Fireproof and explosion-proof lithium battery device applied to fire-fighting equipment

Info

Publication number: CN114188654A
Application number: CN202111368756.8A
Authority: CN
Inventors: 刘儒寿
Original assignee: Foshan Yangbang Optoelectronics Technology Co ltd
Current assignee: Foshan Yangbang Optoelectronics Technology Co ltd
Priority date: 2021-11-18
Filing date: 2021-11-18
Publication date: 2022-03-15

Abstract

The invention belongs to the technical field of lithium batteries, and particularly relates to a fireproof and explosion-proof lithium battery device applied to fire-fighting equipment, which comprises a shell, a top cover and a battery cell, wherein the shell is provided with a first end and a second end; a group of battery cells are uniformly distributed in the shell; an isolating ring is connected between adjacent electric cores, a first contact and a second contact are arranged in the isolating ring, and the first contact and the second contact are respectively connected with the side wall of the electric core on the corresponding side; the second contact is connected with the positive electrode of the battery cell through a wire, and the first contact is connected with the negative electrode of the battery cell in series through a first wire, a buzzer and a second wire; according to the invention, the first contact and the second contact are driven to contact and trigger the buzzer to give out an alarm sound when the battery core bulges seriously, so that the maintenance frequency of the shell is reduced, the maintenance timeliness of the battery is increased, the battery is ensured to be in a normal working state, and the safety of the battery in the use process is ensured.

Description

Fireproof and explosion-proof lithium battery device applied to fire-fighting equipment

Technical Field

The invention belongs to the technical field of lithium batteries, and particularly relates to a fireproof and explosion-proof lithium battery device applied to fire-fighting equipment.

Background

Some fire-fighting equipment in the fire-fighting equipment is provided with lithium batteries, but because of the rescue needs of the fire-fighting work, the scene temperature of the rescued fire is very high and can contact with the fire source, and the lithium batteries are easy to combust and explode under the high-temperature environment of the fire, thereby bringing great difficulty to the fire-fighting rescue and the scene disposal and being not beneficial to the safe development of the fire-fighting work.

A chinese patent with publication number CN209786035U discloses a fire and explosion protection lithium battery device for fire fighting equipment, including upper cover, shell body and lithium cell group, the upper end of shell body is provided with the upper cover, installs the protection electroplax on the lithium cell group to all be provided with the one deck PLASTIC LAMINATED on four anchor rings of shell body inner wall and the bottom surface, four corners all install the piece of taking precautions against earthquakes in the shell body simultaneously, all set up flutedly on the piece of taking precautions against earthquakes, and install a set of explosion-proof plate between the shockproof piece of shell body bottom left and right sides.

The lithium cell that fire-fighting equipment used among the prior art is higher to explosion-proof requirement, and the battery needs good high temperature resistance, and the battery needs to keep good state simultaneously, and current battery is being participated in and is being seared by high temperature easily in the fire extinguishing process, arouses electric core bulge easily after long-time charge-discharge simultaneously, needs regularly to overhaul after the use, nevertheless need unpack the operating condition that the casing observed electric core apart when overhauing, observes whether there is the weeping condition and conflagration hidden danger, wastes time and energy.

Therefore, the invention provides a fireproof and explosion-proof lithium battery device applied to fire-fighting equipment.

Disclosure of Invention

To remedy the deficiencies of the prior art, at least one of the technical problems set forth in the background is addressed.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a fireproof and explosion-proof lithium battery device applied to fire-fighting equipment, which comprises a shell, a top cover and a battery cell, wherein the shell is provided with a first end and a second end; a group of battery cells are uniformly distributed in the shell, and a top cover is fixedly connected to the top of the shell; the top of each electric core is provided with an electrode column, a connecting sheet is sleeved between the electrode columns of two adjacent electric cores, and the connecting sheet is fixed through a nut in threaded connection on the electrode column; a fireproof sponge layer is arranged between the battery cell and the shell; an isolating ring is connected between adjacent electric cores, a first contact and a second contact are arranged in the isolating ring, and the first contact and the second contact are respectively connected with the side wall of the electric core on the corresponding side; the second contact is connected with the positive electrode of the battery cell through a wire, and the first contact is connected with the negative electrode of the battery cell in series through a first wire, a buzzer and a second wire; when the first contact is contacted with the second contact, the buzzer is connected with the power supply and gives out an alarm sound; when the fire fighting equipment works, the lithium battery used by the fire fighting equipment in the prior art has higher explosion-proof requirement, the battery needs good high-temperature resistance, and meanwhile, the battery needs to keep a good state, the existing battery is easily roasted by high temperature in the fire extinguishing process, and simultaneously, the bulge of the battery core is easily caused after long-time charging and discharging, the maintenance needs to be regularly carried out after the use, but the shell needs to be disassembled to observe the working state of the battery core during the maintenance, so that whether the leakage condition and the fire hazard exist or not is observed, time and labor are wasted, at the moment, the invention increases the isolation between the battery cores by the isolating ring arranged between the adjacent battery cores, reduces the extrusion damage to the battery core when the battery core slightly bulges, simultaneously drives the first contact and the second contact to contact and triggers the buzzer to send out alarm when the bulge is serious, the maintenance frequency of the shell is reduced, and the maintenance timeliness of the battery is increased, the battery is ensured to be in a normal working state, and the safety of the battery in the using process is ensured.

Preferably, the two ends of the isolating ring are fixedly connected with elastic heat insulating layers corresponding to the battery cell, and the heat insulating layers completely cover the side face of the battery cell; keep apart between electric core through elastic insulating layer, reduce single electric core damage and arouse generate heat and transmit other electric cores, guarantee the safe work of other electric cores, cooperate the spacer ring simultaneously and reduce contact and wearing and tearing between the adjacent electric core, reduce the short circuit fault that electric core periphery insulating layer wearing and tearing arouse.

Preferably, the center of the heat insulation layer is provided with a first cavity, and the periphery of the first cavity is communicated with a honeycomb second cavity; one side of the second cavity, which is far away from the first cavity, is uniformly provided with a group of filling cavities which are arranged in a snowflake shape, and the filling cavities are communicated with the second cavity; the volumes of the first cavity, the second cavity and the filling cavity are sequentially reduced; an isolating membrane is arranged between the first cavity and the second cavity, an insulating foaming agent is filled in the first cavity, and a catalyst for catalyzing the collision of the foaming agent is filled in the second cavity; the isolation ring has elasticity and is in sealing connection with the heat insulation layer; when electric core swell is serious or electric core generates heat great, atmospheric pressure in the isolating ring risees, make the insulating layer of a chamber department receive the extrusion, and then make the foamer in a chamber break the barrier film after crowded No. two chambeies mix with the catalyst, later produce a large amount of foams and pack one by one and pack into and fill in the chamber, further increase the isolation effect of insulating layer to electric core, the insulating layer that corresponds the position is ablated to the while when electric core trouble short circuit, make the foam leak and spill over, and then wrap up through the foam and keep apart oxygen to electric core, further reduce stretching of conflagration, guarantee the normal work of other electric cores, increase the fire prevention redundancy.

Preferably, the middle part of the connecting sheet is provided with a flexible part which is a conductor, and the hardness of the flexible part is lower than that of the connecting sheet; the ductility of the flexible part is larger than that of the connecting sheet; through setting up soft flexible portion for certain deflection has between the electric core, further reduces electric core because the electric core is owing to transport and the not hard up between connection piece and the electrode post after the clash in the use, increases the electrical connection reliability.

Preferably, four supporting rods are arranged in the isolating ring, the supporting rods are arranged in a diamond shape, and the adjacent supporting rods are hinged end to end; the first contact and the second contact are fixedly connected at the hinge position of the support rod at the corresponding position of the first lead; one side of the second contact, which is close to the first contact, is fixedly connected with a conductive spring; one end of the supporting rod, which is close to the connecting piece, is hinged with an ejector rod, and the end part of the ejector rod is connected with a cutter in a position corresponding to the flexible part; when electric core swell was serious, side between the adjacent electric core was close to each other and extrudees branch for branch rotates and upwards jack-up ejector pin, makes the ejector pin drive the cutter and cuts off the flexible portion that corresponds the position, simultaneously because two liang of a set of parallelly connected power supplies of electric core in the casing, the electric core that makes the flexible portion stop the short circuit when being cut off is to the damage of adjacent electric core, guarantees other unitized electric core normal outputs simultaneously, further guarantees the output reliability of battery, the normal operating time of extension battery.

Preferably, an elastic rod is fixedly connected to one side of the supporting rod and corresponds to the second cavity, and the elastic rod is perpendicular to the side face of the supporting rod; the end part of the elastic rod is fixedly connected with an arc-shaped plate; drive the elastic rod and rotate when branch rotates, after the elastic rod drives the arc and supports a chamber, the elastic rod continues to rotate for the arc supports a chamber and extrudes a chamber lateral wall, drives the extrusion to the foamer in a chamber, further increases the removal efficiency of foamer to No. two chambers and filling chamber, increases foamer inflation and filling efficiency.

Preferably, one end of the ejector rod close to the flexible part is connected with a C-shaped elastic support frame; the cutting knives are in multiple groups and fixedly connected to the inner periphery of the support frame at intervals; the middle part of the periphery of the nut is fixedly connected with an annular cover, and the outer edge of the annular cover is inclined downwards; when upwards extruding the ejector rod, the ejector rod drives the support frame to wrap the flexible portion, and when the ejector rod continues to rise later, the two ends of the support frame support the annular cover and slide and bend towards the inner side, so that the multiple groups of cutters in the support frame wrap and slide relatively, and the cutting efficiency of the flexible portion is further increased.

Preferably, a group of steel nails is uniformly distributed on the support frame, and tips are arranged at one ends of the steel nails, which are close to the flexible parts; when the flexible portion is extruded through the support frame parcel, the flexible portion is run through in advance to the steel nail embedding flexible portion and tears the flexible portion, and the cooperation cutter further increases the cutting efficiency of flexible portion.

Preferably, the bottom of the support frame is provided with a sliding column, and the top of the ejector rod is provided with a sliding cylinder; the sliding column is inserted into the sliding cylinder and is connected with the sliding cylinder in a sliding mode, and a pressure spring is fixedly connected between the sliding column and the bottom of the sliding cylinder; the steel nails at the positions corresponding to the sliding columns on the supporting frame penetrate through the supporting frame and are in sliding connection with the supporting frame; the bottom end of the steel nail is fixedly connected with an elastic plate; the top end of the sliding cylinder is fixedly connected with a collision rod through a spring, and the collision rod penetrates through the support frame and is connected with the support frame in a sliding manner; a clamping groove is formed in one side, close to the elastic plate, of the impact rod, and the end part of the elastic rod is clamped with the clamping groove; the steel nail that corresponds the position on the drive support frame with the traveller gliding when rising through the ejector pin, later the steel nail drives the elastic plate and blocks the draw-in groove and drive the lance gliding, and the lance extrudees the spring energy storage, and later the elastic plate warp and deviate from the draw-in groove, and the lance upwards slides and strikes flexible portion one side after cutting off under the effect of spring, reduces the adhesion that the flexible portion cut off and thoroughly arouse, further increases to damage electrical connection interruption efficiency between electric core and the electric core that other states are good.

Preferably, a first hole penetrating through the striker is formed in the striker; a second hole is formed in the sliding column, one end of the second hole is communicated with the first hole through a hose, and the other end of the second hole is communicated with the side wall, close to the bottom, of the sliding column; the bottom of the sliding cylinder is provided with an arc-shaped groove, and the sliding cylinder is communicated with the second hole through the arc-shaped groove when the sliding column slides to the bottom of the sliding cylinder; when the sliding column is pressed down, air in the sliding cylinder is increased by extrusion air pressure, then the sliding column continues to slide down, and then the second hole is communicated with the arc-shaped groove, so that compressed air in the sliding cylinder is sprayed out from the first hole after passing through the second hole and the hose, the impact effect on the end part of the cut flexible part is further increased, and the adhesion of the flexible part is further reduced.

The invention has the following beneficial effects:

1. according to the fireproof and explosion-proof lithium battery device applied to the fire-fighting equipment, the isolation ring is arranged between the adjacent electric cores, so that the isolation between the electric cores is increased, the extrusion damage to the electric cores when the electric cores are slightly swelled is reduced, meanwhile, the first contact and the second contact are driven to contact and trigger the buzzer to give out an alarm sound when the swelling is serious, the overhaul frequency of the shell is reduced, the maintenance timeliness of the battery is increased, the normal working state of the battery is ensured, and the safety of the battery in the use process is ensured.

2. According to the fireproof and explosion-proof lithium battery device applied to the fire-fighting equipment, the elastic rod is driven to rotate when the support rod rotates, and after the elastic rod drives the arc-shaped plate to abut against the first cavity, the elastic rod continues to rotate, so that the arc-shaped plate abuts against the first cavity and extrudes the side wall of the first cavity, a foaming agent in the first cavity is driven and extruded, the moving efficiency of the foaming agent to the second cavity and the filling cavity is further increased, and the expansion and filling efficiency of the foaming agent is increased.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a partial cross-sectional view of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a cross-sectional view taken at B-B of FIG. 3;

FIG. 5 is a schematic view of the structure of the support frame and the slide cylinder of the present invention;

in the figure: the device comprises a shell 1, a top cover 11, a battery cell 12, an electrode column 13, a connecting sheet 14, a nut 15, a fireproof sponge layer 16, an isolating ring 17, a first contact 18, a second contact 19, a first lead 2, a buzzer 21, a second lead 22, a heat insulating layer 23, a first cavity 24, a second cavity 25, a filling cavity 26, a flexible part 27, a support rod 28, a conductive spring 29, a push rod 3, a cutter 31, an elastic rod 32, an arc-shaped plate 33, a support frame 34, an annular cover 35, a steel nail 36, a sliding column 37, a sliding barrel 38, an elastic plate 39, a collision rod 4, a clamping groove 41, a first hole 42, a second hole 43 and an arc-shaped groove 44.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

Example one

As shown in fig. 1 to fig. 3, a fire-proof and explosion-proof lithium battery device applied to fire fighting equipment according to an embodiment of the present invention includes a housing 1, a top cover 11 and a battery cell 12; a group of battery cells 12 are uniformly distributed in the shell 1, and the top of the shell 1 is fixedly connected with a top cover 11; the top of each of the battery cells 12 is provided with an electrode column 13, a connecting sheet 14 is sleeved between the electrode columns 13 of two adjacent battery cells 12, and the connecting sheet 14 is fixed by a nut 15 which is in threaded connection with the electrode column 13; a fireproof sponge layer 16 is arranged between the battery cell 12 and the shell 1; an isolating ring 17 is connected between the adjacent electric cores 12, a first contact 18 and a second contact 19 are arranged in the isolating ring 17, and the first contact 18 and the second contact 19 are respectively connected with the side wall of the electric core 12 on the corresponding side; the second contact 19 is connected with the positive electrode of the battery cell 12 through a lead, and the first contact 18 is connected with the negative electrode of the battery cell 12 in series through the first lead 2, the buzzer 21 and the second lead 22; when the first contact 18 is contacted with the second contact 19, the buzzer 21 is powered on and gives out alarm sound; when the fire fighting equipment works, the lithium battery used by the fire fighting equipment in the prior art has higher explosion-proof requirement, the battery needs good high-temperature resistance, and meanwhile, the battery needs to keep a good state, the existing battery is easily roasted by high temperature in the fire extinguishing process, meanwhile, the battery core 12 is easily bulged after long-time charging and discharging, the maintenance needs to be carried out regularly after the use, but the shell 1 needs to be disassembled to observe the working state of the battery core 12 during the maintenance, whether the leakage condition and the fire hazard exist or not is observed, time and labor are wasted, at the moment, the invention increases the isolation among the battery cores 12 by the isolating ring 17 arranged between the adjacent battery cores 12, reduces the extrusion damage to the battery core 12 when the battery core 12 slightly bulges, simultaneously drives the first contact 18 and the second contact 19 to contact and triggers the buzzer 21 to give an alarm when the bulges are serious, and reduces the maintenance times of the shell 1, meanwhile, the maintenance timeliness of the battery is increased, the battery is guaranteed to be in a normal working state, and the safety of the battery in the use process is guaranteed.

Two ends of the isolating ring 17 are fixedly connected with an elastic heat insulating layer 23 corresponding to the electric core 12, and the heat insulating layer 23 completely covers the side surface of the electric core 12; keep apart between electric core 12 through elastic insulating layer 23, reduce single electric core 12 damage and arouse generate heat and transmit other electric cores 12, guarantee the safe work of other electric cores 12, cooperate spacer ring 17 to reduce simultaneously and contact and wearing and tearing between adjacent electric core 12, reduce the short circuit fault that electric core 12 periphery insulating layer wearing and tearing arouse.

As shown in fig. 4, a first cavity 24 is formed in the center of the heat insulation layer 23, and a second honeycomb cavity 25 is communicated with the periphery of the first cavity 24; a group of filling cavities 26 arranged in a snowflake shape are uniformly distributed on one side of the second cavity 25, which is far away from the first cavity 24, and the filling cavities 26 are communicated with the second cavity 25; the volumes of the first cavity 24, the second cavity 25 and the filling cavity 26 are reduced in sequence; an isolating membrane is arranged between the first cavity 24 and the second cavity 25, an insulating foaming agent is filled in the first cavity 24, and a catalyst for catalyzing the collision of the foaming agent is filled in the second cavity 25; the isolation ring 17 has elasticity, and the isolation ring 17 is connected with the heat insulation layer 23 in a sealing way; when electric core 12 swell is serious or electric core 12 generates heat great, atmospheric pressure in isolating ring 17 risees, make the insulating layer 23 of a chamber 24 department receive the extrusion, and then make the foamer in a chamber 24 break the barrier film and go into No. two chambeies 25 after and mix with the catalyst, later produce a large amount of foams and pack one by one and pack into and fill in chamber 26, further increase the isolation effect of insulating layer 23 to electric core 12, the insulating layer 23 of corresponding position is ablated to the while when electric core 12 trouble short circuit, make the foam leak and spill over, and then wrap up isolation oxygen to electric core 12 through the foam, further reduce stretching of conflagration, guarantee the normal work of other electric core 12, increase the fire prevention redundancy.

As shown in fig. 2, a flexible portion 27 is provided in the middle of the connecting sheet 14, the flexible portion 27 is a conductor, and the hardness of the flexible portion 27 is lower than that of the connecting sheet 14; the flexible portion 27 is more malleable than the web 14; by providing the soft flexible portion 27, a certain amount of deformation is provided between the battery cells 12, and the looseness between the connecting sheet 14 and the electrode column 13 after the battery cells 12 are collided during transportation and use is further reduced, so that the electrical connection reliability is increased.

As shown in fig. 3, four struts 28 are arranged in the isolating ring 17, the struts 28 are arranged in a diamond shape, and adjacent struts 28 are hinged end to end; the first contact 18 and the second contact 19 are fixedly connected at the hinge joint of the support rod 28 at the corresponding position of the first lead 2; one side of the second contact 19, which is close to the first contact 18, is fixedly connected with a conductive spring 29; one end of the supporting rod 28 close to the connecting piece 14 is hinged with a top rod 3, and the end part of the top rod 3 is connected with a cutter 31 at a position corresponding to the flexible part 27; when electric core 12 bulges seriously, the side between the adjacent electric core 12 is close to each other and extrudes branch 28, make branch 28 rotate and upwards jack-up ejector pin 3, make ejector pin 3 drive cutter 31 and cut off the flexible portion 27 that corresponds the position, simultaneously because two liang of a set of parallelly connected power supplies of electric core 12 in the casing 1, the damage of electric core 12 to adjacent electric core 12 that prevents the short circuit when making flexible portion 27 cut off, guarantee other grouped electric core 12 normal output simultaneously, further guarantee the output reliability of battery, the normal operating time of extension battery.

An elastic rod 32 is fixedly connected to one side of the supporting rod 28 at a position corresponding to the second cavity 25, and the elastic rod 32 is vertically arranged with the side surface of the supporting rod 28; the end part of the elastic rod 32 is fixedly connected with an arc-shaped plate 33; drive the elastic rod 32 and rotate when rotating through branch 28, after elastic rod 32 drove arc 33 and supported chamber 24, elastic rod 32 continued to rotate for arc 33 supported chamber 24 and extrudeed chamber 24 lateral wall No. one, drives the extrusion to the foamer in chamber 24, further increases the removal efficiency of foamer to No. two chamber 25 and filling chamber 26, increases foamer inflation and filling efficiency.

As shown in fig. 5, one end of the top bar 3 close to the flexible part 27 is connected with a C-shaped elastic support bracket 34; the cutters 31 are in multiple groups and fixedly connected to the inner periphery of the support frame 34 at intervals; the middle part of the periphery of the nut 15 is fixedly connected with an annular cover 35, and the outer edge of the annular cover 35 inclines downwards; when upwards extruding the ejector rod 3, the ejector rod 3 drives the support frame 34 to wrap the flexible part 27, then when the ejector rod 3 continuously rises, the two ends of the support frame 34 are propped against the annular cover 35 and are slided and bent towards the inner side, so that the multiple groups of cutters 31 in the support frame 34 are wrapped and slide relatively, and the cutting efficiency of the flexible part 27 is further increased.

A group of steel nails 36 are uniformly distributed on the support frame 34, and tips are arranged at one ends of the steel nails 36 close to the flexible parts 27; when the support frame 34 wraps and extrudes the flexible part 27, the steel nail 36 is embedded into the flexible part 27 and firstly penetrates through and tears the flexible part 27, and the cutting efficiency of the flexible part 27 is further improved by matching with the cutter 31.

Example two

As shown in fig. 5, a first comparative example, in which another embodiment of the present invention is:

the bottom of the support frame 34 is provided with a sliding column 37, and the top of the ejector rod 3 is provided with a sliding cylinder 38; the sliding column 37 is inserted into the sliding cylinder 38 and is connected with the sliding cylinder 38 in a sliding manner, and a pressure spring is fixedly connected between the sliding column 37 and the bottom of the sliding cylinder 38; a steel nail 36 on the support frame 34 corresponding to the sliding column 37 penetrates through the support frame 34 and is connected with the support frame 34 in a sliding manner; the bottom end of the steel nail 36 is fixedly connected with an elastic plate 39; the top end of the sliding cylinder 38 is fixedly connected with a plunger 4 through a spring, and the plunger 4 penetrates through the support frame 34 and is connected with the support frame 34 in a sliding manner; a clamping groove 41 is formed in one side, close to the elastic plate 39, of the impact bar 4, and the end of the elastic bar 32 is clamped with the clamping groove 41; when the ejector rod 3 rises, the steel nail 36 on the support frame 34 corresponding to the sliding column 37 is driven to slide downwards, then the steel nail 36 drives the elastic plate 39 to clamp the clamping groove 41 and drive the plunger 4 to slide downwards, the plunger 4 extrudes the spring for energy storage, then the elastic plate 39 deforms and is separated from the clamping groove 41, the plunger 4 slides upwards under the action of the spring and impacts one side of the cut flexible part 27, adhesion caused by incomplete cutting of the flexible part 27 is reduced, and the interruption efficiency of electrical connection between the damaged electric core 12 and other electric cores 12 in good states is further improved.

A first hole 42 penetrating through the striker 4 is formed in the striker 4; a second hole 43 is formed in the sliding column 37, one end of the second hole 43 is communicated with the first hole 42 through a hose, and the other end of the second hole 43 is communicated with the side wall, close to the bottom, of the sliding column 37; an arc-shaped groove 44 is formed in the bottom of the sliding cylinder 38, and when the sliding column 37 slides to the bottom of the sliding cylinder 38, the sliding cylinder 38 is communicated with the second hole 43 through the arc-shaped groove 44; when the sliding column 37 is pressed downwards, the air in the sliding cylinder 38 is increased by extrusion air pressure, then the sliding column 37 continuously slides downwards, and then the second hole 43 is communicated with the arc-shaped groove 44, so that the compressed air in the sliding cylinder 38 is sprayed out from the first hole 42 after passing through the second hole 43 and the hose, the impact effect on the end part of the cut flexible part 27 is further increased, and the adhesion of the flexible part 27 is further reduced.

When the battery works, the isolation rings 17 arranged between the adjacent electric cores 12 are used for increasing the isolation between the electric cores 12, reducing the extrusion damage to the electric cores 12 when the electric cores 12 slightly swell, and simultaneously driving the first contact 18 and the second contact 19 to contact and trigger the buzzer 21 to give out an alarm sound when the swelling is serious, so that the maintenance frequency of the shell 1 is reduced, the maintenance timeliness of the battery is increased, the normal working state of the battery is ensured, and the safety of the battery in the use process is ensured; the electric cores 12 are isolated through the elastic heat insulation layer 23, so that the heat generated by the damage of a single electric core 12 is reduced and transmitted to other electric cores 12, the safe work of other electric cores 12 is ensured, meanwhile, the contact and abrasion between the adjacent electric cores 12 are reduced by matching with the isolation ring 17, and the short circuit fault caused by the abrasion of the peripheral insulation layer of the electric core 12 is reduced; when the battery cell 12 is seriously wrapped or the battery cell 12 generates heat greatly, the air pressure in the isolating ring 17 rises, so that the heat insulating layer 23 at the first cavity 24 is extruded, the foaming agent in the first cavity 24 breaks an isolating membrane and then enters the second cavity 25 to be mixed with a catalyst, a large amount of foam is generated and is filled into the filling cavity 26 one by one, the isolating effect of the heat insulating layer 23 on the battery cell 12 is further improved, meanwhile, the heat insulating layer 23 at the corresponding position is ablated when the battery cell 12 is in fault and short circuit, so that the foam is leaked and overflowed, the battery cell 12 is wrapped by the foam to isolate oxygen, the spread of fire is further reduced, the normal work of other battery cells 12 is ensured, and the fire redundancy is increased; the soft flexible part 27 is arranged, so that a certain deformation amount exists between the battery cells 12, the looseness between the connecting sheet 14 and the electrode column 13 after the battery cells 12 are collided in the transportation and use processes is further reduced, and the electrical connection reliability is improved; when the battery cells 12 swell seriously, the side surfaces between the adjacent battery cells 12 are close to each other and extrude the supporting rod 28, so that the supporting rod 28 rotates and jacks up the ejector rod 3, the ejector rod 3 drives the cutter 31 to cut off the flexible parts 27 at the corresponding positions, and meanwhile, as the battery cells 12 in the shell 1 are connected in parallel in pairs and in groups for supplying power, the flexible parts 27 prevent the short-circuited battery cells 12 from damaging the adjacent battery cells 12 when being cut off, and meanwhile, the normal output of other grouped battery cells 12 is ensured, the output reliability of the battery is further ensured, and the normal working time of the battery is prolonged; the elastic rod 32 is driven to rotate when the supporting rod 28 rotates, and after the elastic rod 32 drives the arc-shaped plate 33 to abut against the first cavity 24, the elastic rod 32 continues to rotate, so that the arc-shaped plate 33 abuts against the first cavity 24 and extrudes the side wall of the first cavity 24, the foaming agent in the first cavity 24 is driven and extruded, the moving efficiency of the foaming agent to the second cavity 25 and the filling cavity 26 is further increased, and the expansion and filling efficiency of the foaming agent is increased; when the ejector rod 3 is extruded upwards, the ejector rod 3 drives the support frame 34 to wrap the flexible part 27, then when the ejector rod 3 continues to rise, the two ends of the support frame 34 abut against the annular cover 35 and slide and bend inwards, so that the plurality of groups of cutters 31 in the support frame 34 are wrapped and slide relatively, and the cutting efficiency of the flexible part 27 is further improved; when the support frame 34 wraps and extrudes the flexible part 27, the steel nail 36 is embedded into the flexible part 27 and firstly penetrates through and tears the flexible part 27, and the cutting efficiency of the flexible part 27 is further improved by matching with the cutter 31.

The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a be applied to fire prevention explosion-proof lithium cell device of fire-fighting equipment which characterized in that: the battery comprises a shell (1), a top cover (11) and a battery cell (12); a group of battery cells (12) are uniformly distributed in the shell (1), and a top cover (11) is fixedly connected to the top of the shell (1); the top of each electric core (12) is provided with an electrode column (13), a connecting sheet (14) is sleeved between the electrode columns (13) of two adjacent electric cores (12), and the connecting sheet (14) is fixed through a nut (15) in threaded connection on the electrode column (13); a fireproof sponge layer (16) is arranged between the battery cell (12) and the shell (1); an isolating ring (17) is connected between the adjacent electric cores (12), a first contact (18) and a second contact (19) are arranged in the isolating ring (17), and the first contact (18) and the second contact (19) are respectively connected with the side wall of the electric core (12) on the corresponding side; the second contact (19) is connected with the positive electrode of the battery cell (12) through a lead, and the first contact (18) is connected with the negative electrode of the battery cell (12) in series through the first lead (2), the buzzer (21) and the second lead (22); when the first contact (18) is in contact with the second contact (19), the buzzer (21) is powered on and gives out alarm sound.

2. The fire and explosion protection lithium battery device applied to fire fighting equipment according to claim 1, characterized in that: elastic heat insulating layers (23) are fixedly connected with the two ends of the isolating ring (17) and the corresponding positions of the battery cell (12), and the heat insulating layers (23) completely cover the side faces of the battery cell (12).

3. The fire and explosion protection lithium battery device applied to fire fighting equipment according to claim 2, characterized in that: a first cavity (24) is formed in the center of the heat insulation layer (23), and a second honeycomb cavity (25) is communicated with the periphery of the first cavity (24); one side of the second cavity (25), which is far away from the first cavity (24), is uniformly provided with a group of filling cavities (26) which are arranged in a snowflake shape, and the filling cavities (26) are communicated with the second cavity (25); the volumes of the first cavity (24), the second cavity (25) and the filling cavity (26) are reduced in sequence; an isolating membrane is arranged between the first cavity (24) and the second cavity (25), an insulating foaming agent is filled in the first cavity (24), and a catalyst for catalyzing the collision of the foaming agent is filled in the second cavity (25); the isolation ring (17) has elasticity and the isolation ring (17) is connected with the heat insulation layer (23) in a sealing mode.

4. The fire and explosion protection lithium battery device applied to fire fighting equipment according to claim 1, characterized in that: the middle part of the connecting sheet (14) is provided with a flexible part (27), the flexible part (27) is a conductor, and the hardness of the flexible part (27) is lower than that of the connecting sheet (14); the flexible portion (27) is more malleable than the connecting tab (14).

5. The fire and explosion protection lithium battery device applied to fire fighting equipment according to claim 1, characterized in that: four supporting rods (28) are arranged in the isolating ring (17), the supporting rods (28) are arranged in a diamond shape, and the adjacent supporting rods (28) are hinged end to end; the first contact (18) and the second contact (19) are fixedly connected at the hinge position of the support rod (28) at the corresponding position of the first lead (2); one side of the second contact (19) close to the first contact (18) is fixedly connected with a conductive spring (29); one end of the support rod (28) close to the connecting piece (14) is hinged with a push rod (3), and the end part of the push rod (3) is connected with a cutter (31) at a position corresponding to the flexible part (27).

6. The fire and explosion protection lithium battery device applied to the fire fighting equipment as claimed in claim 5, wherein: an elastic rod (32) is fixedly connected to a position, corresponding to the second cavity (25), of one side of the supporting rod (28), and the elastic rod (32) is vertically arranged with the side face of the supporting rod (28); the end part of the elastic rod (32) is fixedly connected with an arc-shaped plate (33).

7. The fire and explosion protection lithium battery device applied to the fire fighting equipment as claimed in claim 5, wherein: one end of the ejector rod (3) close to the flexible part (27) is connected with a C-shaped elastic support frame (34); the cutting knives (31) are in multiple groups and are fixedly connected to the inner periphery of the support frame (34) at intervals; the middle part of the periphery of the nut (15) is fixedly connected with an annular cover (35), and the outer edge of the annular cover (35) inclines downwards.

8. The fire and explosion protection lithium battery device applied to the fire fighting equipment as claimed in claim 7, wherein: a group of steel nails (36) are uniformly distributed on the support frame (34), and tips are arranged at one ends, close to the flexible portions (27), of the steel nails (36).

9. The fire and explosion protection lithium battery device applied to the fire fighting equipment as claimed in claim 8, wherein: the bottom of the support frame (34) is provided with a sliding column (37), and the top of the ejector rod (3) is provided with a sliding cylinder (38); the sliding column (37) is inserted into the sliding cylinder (38) and is in sliding connection with the sliding cylinder (38), and a pressure spring is fixedly connected between the sliding column (37) and the bottom of the sliding cylinder (38); a steel nail (36) on the support frame (34) corresponding to the sliding column (37) penetrates through the support frame (34) and is in sliding connection with the support frame (34); the bottom end of the steel nail (36) is fixedly connected with an elastic plate (39); the top end of the sliding cylinder (38) is fixedly connected with a collision rod (4) through a spring, and the collision rod (4) penetrates through the support frame (34) and is in sliding connection with the support frame (34); a clamping groove (41) is formed in one side, close to the elastic plate (39), of the impact rod (4), and the end portion of the elastic rod (32) is clamped with the clamping groove (41).

10. The fire and explosion protection lithium battery device applied to the fire fighting equipment as claimed in claim 9, wherein: a first hole (42) penetrating through the collision rod (4) is formed in the collision rod (4); a second hole (43) is formed in the sliding column (37), one end of the second hole (43) is communicated with the first hole (42) through a hose, and the other end of the second hole (43) is communicated with the side wall, close to the bottom, of the sliding column (37); an arc-shaped groove (44) is formed in the bottom of the sliding cylinder (38), and when the sliding column (37) slides to the bottom of the sliding cylinder (38), the sliding cylinder (38) is communicated with the second hole (43) through the arc-shaped groove (44).