CN113328190A - Protective shell capable of improving use safety of lithium ion battery - Google Patents
Protective shell capable of improving use safety of lithium ion battery Download PDFInfo
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- CN113328190A CN113328190A CN202110589938.1A CN202110589938A CN113328190A CN 113328190 A CN113328190 A CN 113328190A CN 202110589938 A CN202110589938 A CN 202110589938A CN 113328190 A CN113328190 A CN 113328190A
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- protective shell
- lithium ion
- ion battery
- battery body
- fixedly connected
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4285—Testing apparatus
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/375—Vent means sensitive to or responsive to temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/383—Flame arresting or ignition-preventing means
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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
Abstract
The invention discloses a protective shell capable of improving the use safety of a lithium ion battery, which belongs to the technical field of lithium ion batteries, and the protective shell capable of improving the use safety of the lithium ion battery is characterized in that when a lithium ion battery body is combusted, a barrier film is burnt, an elastic film pops a fire extinguishing ball to the lithium ion battery body and all parts inside a protective shell, the fire extinguishing ball is rapidly disintegrated to spray internal water, the lithium ion battery body is extinguished and cooled, continuous combustion is avoided, and a user has more escape time; when the lithium ion battery body explodes, protective housing has the buffering guard action, and when the explosion dynamics was great, its piece can strike the parcel layer and be wrapped by it, and the glue of storage intracavity portion can flow on the explosion piece for explosion piece and parcel layer gluing are in the same place, can avoid the sharp corner and the high temperature of explosion piece to cause the injury to the human body, have prevented to lead to the fact bigger injury to the personnel that come too late reaction, and the security is high.
Description
Technical Field
The invention relates to the technical field of lithium ion batteries, in particular to a protective shell capable of improving the use safety of a lithium ion battery.
Background
A lithium ion battery is a kind of secondary battery (rechargeable battery) that mainly operates by movement of lithium ions between a positive electrode and a negative electrode. During charging and discharging, Li + is inserted and extracted back and forth between two electrodes: during charging, Li + is extracted from the positive electrode and is inserted into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; the opposite is true during discharge.
The lithium ion battery is always the first choice of the green and environment-friendly battery, the lithium ion battery is widely applied to a plurality of fields in life at present, the lithium ion battery is applied to most of the electric vehicles which are most common in life as an energy source, and electric energy is converted into mechanical energy to drive the vehicles to move. With the mass application of lithium ion battery electric vehicles, many serious phenomena such as explosion and burning of the lithium ion battery often occur due to problems such as improper operation, for example, the news of battery explosion caused by the fact that people bring the electric vehicle into an elevator and charge at home is not few.
At present, in the process of using the electric vehicle, generally, the combustion and explosion of the lithium ion battery are caused mainly due to the reasons of overcharge, overdischarge, external force impact, high temperature and the like of the lithium ion battery in the electric vehicle, at present, no corresponding protection buffer exists outside the lithium ion battery, the battery combustion and explosion can not be timely and correspondingly processed, the time of the combustion and explosion of the lithium ion is very quick, and users do not have corresponding reaction and emergency time, so that the time for people to escape from danger is very short, and great threat is brought to the safety of users. Therefore, a protective shell capable of improving the safety of the lithium ion battery is provided to solve the above problems.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a protective shell capable of improving the use safety of a lithium ion battery, when the lithium ion battery body is burnt, after a barrier film on the inner wall of the protective shell is burnt, an elastic film can eject a fire extinguishing ball onto the lithium ion battery body and everywhere in the protective shell, and meanwhile, the broken film in the fire extinguishing ball is broken, and the fire extinguishing ball can rapidly decompose and spray water in the fire extinguishing ball, so that the lithium ion battery body can be burnt for extinguishing fire and cooling, the lithium ion battery body is prevented from being burnt continuously, and more time is provided for a user to escape from a site; when the lithium ion battery body finally explodes and disintegrates, the protective housing can have the effect of buffering protection to its explosion, when the explosion dynamics is great, its piece can strike the parcel layer and be lived by it, because the high temperature of explosion piece can melt the solid-state glue of storing intracavity portion and be liquid, glue can flow on the explosion piece through the screen cloth this moment, make explosion piece and parcel layer glue together, sharp corner through the parcel layer not only can avoid the explosion piece leads to the fact the injury to personnel, and can avoid its high temperature to lead to the fact the injury to the human body, excellent in protection effect, very big prevent that lithium ion battery body from disintegrating and lead to the fact bigger injury to the personnel that come too late to react, the security of use has been improved.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A protective shell capable of improving the use safety of a lithium ion battery comprises a lithium ion battery body and a protective shell, wherein the lithium ion battery body is positioned in the protective shell, a plurality of fixing rods are fixedly connected between the inner wall of the lithium ion battery body and the outer wall of the protective shell, a plurality of placing grooves are respectively formed in the upper wall, the lower wall and the side wall of the protective shell, an elastic membrane is fixedly connected to the inner wall of each placing groove, a barrier membrane is arranged at one end, close to the lithium ion battery body, of each placing groove, the barrier membrane is fixedly connected to the inner wall of the protective shell, a plurality of fire extinguishing balls are placed between the elastic membrane and the barrier membrane, a plurality of wrapping layers are fixedly connected to the outer wall of the protective shell, a storage cavity is formed in each wrapping layer, solid glue is filled in each storage cavity, and a plurality of screen meshes are fixedly connected to one end, close to the placing grooves, of each wrapping layer, a plurality of connecting channels are communicated between the screen and the storage cavity. The gas between the elastic membrane and the barrier membrane is expanded due to high temperature, the elastic membrane is expanded and tensioned, then the barrier membrane on the inner wall of the protective shell is burnt, the gas is discharged, and at the moment, the elastic membrane ejects the fire extinguishing ball to the lithium ion battery body and all parts inside the protective shell to extinguish fire and reduce temperature; when lithium ion battery body explosion dynamics is great, its piece can strike the parcel layer, can wrap up the explosion piece through the parcel layer, the aperture grow of screen cloth, simultaneously because the high temperature of explosion piece can melt the solid-state glue of storing up intracavity portion and be liquid, glue finally can flow the explosion piece this moment, thereby make explosion piece and parcel layer gluing together, sharp corner through the parcel layer not only can avoid the explosion piece causes the injury to the personnel, and can pass through the parcel, avoid its high temperature to cause the injury to the human body, the protecting effect is good, very big lithium ion battery body that has prevented disintegrates and causes bigger injury to the personnel who come too late reaction, the security of using has been improved.
Further, the upper and lower walls and the side wall of the protective shell are provided with a plurality of air leakage channels, the air leakage channels are far away from the waterproof breathable film fixedly connected with one end of the lithium ion battery body, and the waterproof breathable film mainly prevents external water from entering the protective shell and avoids influencing the lithium ion battery body.
Furthermore, the one end fixedly connected with protection filter screen that the passageway of disappointing is close to the lithium ion battery body, and the piece that protection filter screen can prevent after the lithium ion battery body disintegrates is followed the passageway departure of disappointing, improves the security.
Further, the inside still fixedly connected with of passageway of disappointing adsorbs the filter screen, it is located between waterproof ventilated membrane and the protection filter screen to adsorb the filter screen, through adsorbing a large amount of harmful substance in the filter screen adsorbable flue gas, avoids causing the influence to external environment and human body.
Further, gas is filled between the elastic membrane and the barrier membrane, and the gas between the elastic membrane and the barrier membrane is expanded due to high temperature, so that the elastic membrane is expanded and tensioned, and the subsequent ejection of the fire extinguishing ball can be improved.
Furthermore, a cavity is formed in the fire extinguishing ball, liquid water is filled in the cavity, a plurality of rupture channels are formed in the outer wall of the fire extinguishing ball and communicated with the cavity, rupture membranes are fixedly connected to two sides of each rupture channel, and gas is filled between the rupture membranes on the two sides in each rupture channel; simultaneously high temperature and impact force can make the inside gaseous inflation that breaks in the passageway 17 of extinguishing fire ball 7 and make and break membrane 18 and take place to break, the ball 7 of extinguishing fire can be fast decomposed and can be launched out with the inside water of ball 7 of extinguishing fire this moment to can put out a fire and cool down to lithium ion battery body 1 burning, cooling effect is good, avoid lithium ion battery body 1 to continue to burn, also give the more time of fleing from the scene of user simultaneously, reduced lithium ion battery body 1 and produced bigger danger.
Further, the outer wall of the fire extinguishing ball is made of high-temperature-resistant heat-insulating materials, when the fire extinguishing ball is disassembled to extinguish fire and cool the lithium ion battery body, the high-temperature-resistant heat-insulating body of the fire extinguishing ball can avoid being burnt, and the burning strength is prevented from being further improved.
Furthermore, the inner wall of the protective shell is also fixedly connected with a plurality of pressure sensors, and an air bag is fixedly connected between the pressure sensors and the lithium ion battery body. When the lithium ion battery body is because overcharging, put excessively, when external shock or high temperature scheduling problem appear expanding, this body of lithium ion battery can extrude the gasbag this moment, pressure sensor can be extruded to the gasbag simultaneously, can know the inflation degree of lithium ion battery body through pressure sensor, when lithium ion battery body inflation degree exceeded safety range, pressure sensor can signals promptly, remind the user, can know this lithium ion battery goes wrong, possible follow-up meeting burning explosion, user's that this moment can be timely carries out subsequent processing to this lithium ion battery body, avoid the emergence of follow-up danger.
Furthermore, a plurality of smoke sensors are fixedly connected to the upper wall inside the protective shell, emergency signals can be sent through the smoke sensors, and users can know that the lithium ion battery body is in a problem timely at the moment, and escape from the accident site timely, so that more time is provided for danger escaping of the users.
Furthermore, the upper end outer wall fixedly connected with handle of protective housing, the setting through the handle not only can distinguish lithium ion battery body and protective housing upper and lower end direction, and the handle can make things convenient for the user to carry to put and transport this device moreover, and the convenience is good.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) when the lithium ion battery body appears expanding owing to overcharging, overdischarging, external shock or high temperature scheduling problem in this scheme, this meeting of lithium ion battery can extrude the gasbag this moment, and pressure sensor can be extruded to the gasbag, can know the inflation degree of lithium ion battery body through pressure sensor, and when lithium ion battery body inflation degree exceeded safety range, pressure sensor can the signals promptly, in time reminded the user of service, avoids follow-up dangerous emergence.
(2) When the lithium ion battery body burns and smokes in the scheme, the emergency signal can be sent through the smoke sensor, and the lithium ion battery can escape from the accident site in time, so that more time is provided for self escape. Simultaneously the flue gas of burning can flow to the external world through the passageway of losing heart, can prevent that the inside gaseous atmospheric pressure of protective housing is too big and cause the threat of explosion, the convenient messenger's of still can be directly perceived discovery to through adsorbing a large amount of harmful substance in the filter screen adsorbable flue gas, avoid causing the influence to external environment and human body, waterproof ventilated membrane mainly prevents that external water from entering into protective housing's inside, avoids producing the influence to the lithium ion battery body.
(3) When the lithium ion battery body takes place to burn in this scheme, because high temperature makes gas expansion make the elastic membrane inflation taut, then the barrier film of protection shells inner wall can be burnt out, the elastic membrane can pop out the ball of putting out a fire to the lithium ion battery body and inside everywhere of protection shells this moment, high temperature and impact force can make the gas expansion in the inside passageway that breaks of ball of putting out a fire and make the membrane that breaks take place to break, the ball of putting out a fire can be fast decomposed and can be launched out the inside water of ball of putting out a fire this moment, thereby can put out a fire and cool down lithium ion battery body burning, it is effectual to cool down, avoid the lithium ion battery body to continue burning, also give the time of more fleeing from the scene of user simultaneously, reduced the lithium ion battery body and produced bigger danger.
(4) This scheme is when the final explosion disintegration of lithium ion battery body, at first the protective housing can have the effect of buffering and protection to its explosion, when the explosion dynamics is great, its piece can strike the parcel layer and be wrapped by it, the screen cloth is stretched aperture grow simultaneously, because the high temperature of explosion piece can melt the solid-state glue of storing up intracavity portion and be liquid, glue can flow on the explosion piece through the screen cloth this moment, make explosion piece and parcel layer glue together, sharp corner that not only can avoid the explosion piece through the parcel layer causes the injury to the personnel, and can pass through the parcel, avoid its high temperature to cause the injury to the human body, the protecting effect is good, very big lithium ion battery body that has prevented disintegrates and causes bigger injury to the personnel who comes out of reach to react, the security of use has been improved.
Drawings
FIG. 1 is a schematic cross-sectional front view of the present invention;
FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic cross-sectional view taken along line B-B in FIG. 1;
FIG. 4 is an enlarged view of the structure at C in FIG. 1;
FIG. 5 is an enlarged view of the structure of FIG. 1 at D;
fig. 6 is a schematic view of the internal structure of the fire extinguishing ball of the present invention.
The reference numbers in the figures illustrate:
1. a lithium ion battery body; 2. a protective housing; 3. fixing the rod; 4. a placement groove; 5. an elastic film; 6. a barrier film; 7. fire extinguishing balls; 8. a wrapping layer; 9. a storage chamber; 10. screening a screen; 11. a connecting channel; 12. an air escape channel; 13. a waterproof breathable film; 14. a protective filter screen; 15. adsorbing a filter screen; 16. a cavity; 17. a rupture channel; 18. breaking the membrane; 19. a pressure sensor; 20. an air bag; 21. a smoke sensor; 22. a handle.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the connection can be direct connection or indirect connection through an intermediate medium, and can be communication inside the model adapting element. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b):
referring to fig. 1, 2, 4 and 6, a protective shell capable of improving the safety of a lithium ion battery comprises a lithium ion battery body 1 and a protective shell 2, the lithium ion battery body 1 is located inside the protective shell 2, a plurality of fixing rods 3 are fixedly connected between the inner wall of the lithium ion battery body 1 and the outer wall of the protective shell 2, a plurality of placing grooves 4 are respectively formed on the upper wall, the lower wall and the side wall of the protective shell 2, elastic membranes 5 are fixedly connected on the inner walls of the placing grooves 4, barrier membranes 6 are arranged at one ends of the placing grooves 4 close to the lithium ion battery body 1, the barrier membranes 6 are fixedly connected to the inner wall of the protective shell 2, a plurality of fire extinguishing balls 7 are placed between the elastic membranes 5 and the barrier membranes 6, the outer walls of the fire extinguishing balls 7 are made of high temperature resistant and heat insulating materials, when the fire extinguishing balls 7 are disassembled to extinguish fire and cool the lithium ion battery body 1, the body of the fire extinguishing balls 7 has high temperature resistant and heat insulating properties, it is prevented from being burned, and the strength of burning is prevented from being further increased, and gas is filled between the elastic film 5 and the barrier film 6. The inside cavity 16 of having seted up of fire extinguishing ball 7, the cavity 16 intussuseption is filled with liquid water, and the outer wall of fire extinguishing ball 7 has been seted up a plurality of and has been broken passageway 17, and it is linked together with cavity 16 to break passageway 17, and the equal fixedly connected with rupture membrane 18 in both sides of breaking passageway 17 has gas between the rupture membrane 18 in the both sides of breaking passageway 17. When the lithium ion battery body 1 is burned, the gas between the elastic membrane 5 and the barrier membrane 6 is expanded due to the high temperature, and the elastic membrane 5 is expanded and tensioned, then the barrier film 6 on the inner wall of the protective shell 2 will be burned out, the gas will be discharged, at this time, the flexible film 5 will eject the fire extinguishing ball 7 to the lithium ion battery body 1 and all places inside the protective shell 2, at the same time, the gas in the rupture channel 17 inside the fire extinguishing ball 7 is expanded by the high temperature and the impact force, and the rupture membrane 18 is ruptured, at the same time, the fire extinguishing ball 7 is rapidly decomposed to spray water inside the fire extinguishing ball 7, thereby extinguishing fire and cooling the combustion of the lithium ion battery body 1, having good cooling effect, avoiding the continuous combustion of the lithium ion battery body 1, meanwhile, more time is provided for users to escape from the site, and the danger of the lithium ion battery body 1 is reduced.
Referring to fig. 1, 2 and 4, the outer wall of the protective housing 2 is fixedly connected with a plurality of wrapping layers 8, a storage cavity 9 is formed in each wrapping layer 8, the storage cavity 9 is filled with solid glue, one end of each wrapping layer 8 close to the placement groove 4 is fixedly connected with a plurality of screens 10, and a plurality of connecting channels 11 are communicated between the screens 10 and the storage cavity 9. When the lithium ion battery body 1 finally explodes and disintegrates, the fragments of the lithium ion battery body 1 can collide with the inner wall of the protective shell 2, the protective shell 2 can buffer and protect the explosion of the protective shell, the force for exploding and disintegrating the lithium ion battery body 1 can be greatly removed, and the injury to users is avoided. When lithium ion battery body 1 explosion dynamics is great, its piece can strike parcel layer 8, can wrap up the explosion piece through parcel layer 8, the explosion piece can stretch screen cloth 10, the aperture grow of screen cloth 10, simultaneously because the high temperature of explosion piece can melt the inside solid-state glue of storage chamber 9 and be liquid, glue can flow to screen cloth 10 through connecting channel 11 this moment, finally can flow to the explosion piece, thereby make explosion piece and parcel layer 8 gluing be in the same place, sharp corner through parcel layer 8 not only can avoid the explosion piece leads to the fact the injury to the personnel, and can pass through the parcel, avoid its high temperature to lead to the fact the injury to the human body, the protecting effect is good, very big lithium ion battery body 1 that has prevented disintegrates and leads to the fact bigger injury to the personnel who comes out of time to react, the security of using has been improved.
Referring to fig. 1, fig. 2 and fig. 5, the upper wall, the lower wall and the side wall of the protective casing 2 are both provided with a plurality of air release channels 12, and one end of each air release channel 12 far away from the lithium ion battery body 1 is fixedly connected with a waterproof breathable film 13; one end of the air leakage channel 12 close to the lithium ion battery body 1 is fixedly connected with a protective filter screen 14, and the protective filter screen can prevent fragments of the disassembled lithium ion battery body 1 from flying out of the air leakage channel 12, so that the safety is improved; the inside still fixedly connected with of release channel 12 adsorbs filter screen 15, adsorbs filter screen 15 to be located between waterproof ventilated membrane 13 and the protection filter screen 14. The flue gas of burning simultaneously can be through losing air passageway 12 and pass protection filter screen 14, adsorb filter screen 15 and waterproof ventilated membrane 13 and flow out to the external world, can prevent that the gaseous atmospheric pressure of 2 inside protective housing from being too big and cause the threat of explosion, still can further direct-viewing convenient messenger's discovery, and through adsorbing a large amount of harmful substance in the filter screen 15 adsorbable flue gas, avoid causing the influence to external environment and human body, waterproof ventilated membrane 13 mainly prevents that external water from entering into protective housing 2's inside, avoid producing the influence to lithium ion battery body 1.
Referring to fig. 3, the inner wall of the protective casing 2 is further fixedly connected with a plurality of pressure sensors 19, an air bag 20 is fixedly connected between the pressure sensors 19 and the lithium ion battery body 1, when the lithium ion battery body 1 expands due to overcharge, overdischarge, external impact or high temperature, and the like, the air bag 20 is extruded by the lithium ion battery body 1, the pressure sensors 19 are extruded by the air bag 20, the expansion degree of the lithium ion battery body 1 can be known through the pressure sensors 19, when the expansion degree of the lithium ion battery body 1 exceeds a safety range, the pressure sensors 19 can send signals to remind users, the users can know that the lithium ion battery has problems, and possible subsequent combustion and explosion can occur, and at this time, the users can timely perform subsequent processing on the lithium ion battery body 1, and avoid subsequent risks.
Referring to fig. 1, the upper wall inside the protective casing 2 is fixedly connected with a plurality of smoke sensors 21, and emergency signals can be sent through the smoke sensors 21, so that a user can know that a problem occurs inside the lithium ion battery body 1 in time and escape from an accident site in time, and more time is provided for self escape. Protection casing 2's upper end outer wall fixedly connected with handle 22, the setting through handle 22 not only can distinguish lithium ion battery body 1 and protection casing 2 from top to bottom direction, and handle 22 can make things convenient for the user of service to carry to put and transport this device moreover, and the convenience is good.
The working principle is as follows: when using, because overcharge, overdischarge, when the inflation appears in external shock or high temperature scheduling problem when lithium ion battery body 1, lithium ion battery body 1 can extrude gasbag 20 this moment, gasbag 20 can extrude pressure sensor 19 simultaneously, can know lithium ion battery body 1's inflation degree through pressure sensor 19, when lithium ion battery body 1 inflation degree exceeded safety range, pressure sensor 19 can signals promptly, remind the user, can know this lithium ion battery goes wrong, probably follow-up meeting burning explosion, user of this moment can be timely carry out subsequent processing to this lithium ion battery body 1, avoid follow-up dangerous emergence.
When the lithium ion battery body 1 burns and smokes, the smoke sensor 21 can send out an emergency signal, so that a user can know that the inside of the lithium ion battery body 1 is in a problem in time and escape from an accident site in time, and more time is provided for self escape. The flue gas of burning simultaneously can be through losing air passageway 12 and pass protection filter screen 14, adsorb filter screen 15 and waterproof ventilated membrane 13 and flow out to the external world, can prevent that the gaseous atmospheric pressure of 2 inside protective housing from being too big and cause the threat of explosion, still can further direct-viewing convenient messenger's discovery, and through adsorbing a large amount of harmful substance in the filter screen 15 adsorbable flue gas, avoid causing the influence to external environment and human body, waterproof ventilated membrane 13 mainly prevents that external water from entering into protective housing 2's inside, avoid producing the influence to lithium ion battery body 1.
When the lithium ion battery body 1 is burned, the gas between the elastic membrane 5 and the barrier membrane 6 is expanded due to the high temperature, and the elastic membrane 5 is expanded and tensioned, then the barrier film 6 on the inner wall of the protective shell 2 will be burned out, the gas will be discharged, at this time, the flexible film 5 will eject the fire extinguishing ball 7 to the lithium ion battery body 1 and all places inside the protective shell 2, at the same time, the gas in the rupture channel 17 inside the fire extinguishing ball 7 is expanded by the high temperature and the impact force, and the rupture membrane 18 is ruptured, at the same time, the fire extinguishing ball 7 is rapidly decomposed to spray water inside the fire extinguishing ball 7, thereby extinguishing fire and cooling the combustion of the lithium ion battery body 1, having good cooling effect, avoiding the continuous combustion of the lithium ion battery body 1, meanwhile, more time is provided for users to escape from the site, and the danger of the lithium ion battery body 1 is reduced.
When the lithium ion battery body 1 finally explodes and disintegrates, the fragments of the lithium ion battery body 1 can collide with the inner wall of the protective shell 2, the protective shell 2 can buffer and protect the explosion of the protective shell, the force for exploding and disintegrating the lithium ion battery body 1 can be greatly removed, and the injury to users is avoided. When lithium ion battery body 1 explosion dynamics is great, its piece can strike parcel layer 8, can wrap up the explosion piece through parcel layer 8, the explosion piece can stretch screen cloth 10, the aperture grow of screen cloth 10, simultaneously because the high temperature of explosion piece can melt the inside solid-state glue of storage chamber 9 and be liquid, glue can flow to screen cloth 10 through connecting channel 11 this moment, finally can flow to the explosion piece, thereby make explosion piece and parcel layer 8 gluing be in the same place, sharp corner through parcel layer 8 not only can avoid the explosion piece leads to the fact the injury to the personnel, and can pass through the parcel, avoid its high temperature to lead to the fact the injury to the human body, the protecting effect is good, very big lithium ion battery body 1 that has prevented disintegrates and leads to the fact bigger injury to the personnel who comes out of time to react, the security of using has been improved.
The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (10)
1. The utility model provides a can improve lithium ion battery safety in utilization's protecting crust, includes lithium ion battery body (1) and protective housing (2), its characterized in that: the lithium ion battery comprises a lithium ion battery body (1), a plurality of fixing rods (3) are fixedly connected between the inner wall of the lithium ion battery body (1) and the outer wall of a protective shell (2), a plurality of placing grooves (4) are formed in the upper wall, the lower wall and the side wall of the protective shell (2), an elastic membrane (5) is fixedly connected to the inner wall of each placing groove (4), a barrier membrane (6) is arranged at one end, close to the lithium ion battery body (1), of each placing groove (4), the barrier membrane (6) is fixedly connected to the inner wall of the protective shell (2), a plurality of fire extinguishing balls (7) are placed between the elastic membrane (5) and the barrier membrane (6), a plurality of wrapping layers (8) are fixedly connected to the outer wall of the protective shell (2), a storage cavity (9) is formed in the wrapping layers (8), and solid glue is filled in the storage cavity (9), one end of the wrapping layer (8) close to the placing groove (4) is fixedly connected with a plurality of screen meshes (10), and a plurality of connecting channels (11) are communicated between the screen meshes (10) and the storage cavity (9).
2. The protective shell according to claim 1, wherein the protective shell is formed by: a plurality of air leakage channels (12) are formed in the upper wall and the lower wall of the protective shell (2), and the air leakage channels (12) are far away from a waterproof breathable film (13) fixedly connected with one end of the lithium ion battery body (1).
3. The protective shell according to claim 2, wherein the protective shell is formed by: one end of the air leakage channel (12) close to the lithium ion battery body (1) is fixedly connected with a protective filter screen (14).
4. The protective shell according to claim 3, wherein the protective shell is formed by a plurality of materials selected from the group consisting of: the inside still fixedly connected with of passageway of disappointing (12) adsorbs filter screen (15), adsorb filter screen (15) and be located between waterproof ventilated membrane (13) and protection filter screen (14).
5. The protective shell according to claim 1, wherein the protective shell is formed by: the space between the elastic membrane (5) and the barrier membrane (6) is filled with gas.
6. The protective shell according to claim 1, wherein the protective shell is formed by: cavity (16) have been seted up to fire extinguishing ball (7) inside, cavity (16) intussuseption is filled with liquid water, a plurality of passageway (17) that break has been seted up to the outer wall of fire extinguishing ball (7), it is linked together with cavity (16) to break passageway (17), the equal fixedly connected with in both sides of breaking passageway (17) breaks membrane (18), it has gas to fill between both sides breakage membrane (18) in passageway (17) that breaks.
7. The protective shell according to claim 1, wherein the protective shell is formed by: the outer wall of the fire extinguishing ball (7) is made of high-temperature resistant heat-insulating material.
8. The protective shell according to claim 1, wherein the protective shell is formed by: the inner wall of the protective shell (2) is also fixedly connected with a plurality of pressure sensors (19), and air bags (20) are fixedly connected between the pressure sensors (19) and the lithium ion battery body (1).
9. The protective shell according to claim 1, wherein the protective shell is formed by: the upper wall of the interior of the protective shell (2) is fixedly connected with a plurality of smoke sensors (21).
10. The protective shell according to claim 1, wherein the protective shell is formed by: the outer wall of the upper end of the protective shell (2) is fixedly connected with a handle (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110589938.1A CN113328190A (en) | 2021-05-28 | 2021-05-28 | Protective shell capable of improving use safety of lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110589938.1A CN113328190A (en) | 2021-05-28 | 2021-05-28 | Protective shell capable of improving use safety of lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113328190A true CN113328190A (en) | 2021-08-31 |
Family
ID=77421957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110589938.1A Withdrawn CN113328190A (en) | 2021-05-28 | 2021-05-28 | Protective shell capable of improving use safety of lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113328190A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114497814A (en) * | 2022-04-18 | 2022-05-13 | 深圳市尚亿芯科技有限公司 | Lithium battery box with automatic fire extinguishing and explosion preventing functions |
| CN116315289A (en) * | 2023-05-18 | 2023-06-23 | 北京中冠宝新能源科技有限责任公司 | New energy battery with safety protection device and control system |
-
2021
- 2021-05-28 CN CN202110589938.1A patent/CN113328190A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114497814A (en) * | 2022-04-18 | 2022-05-13 | 深圳市尚亿芯科技有限公司 | Lithium battery box with automatic fire extinguishing and explosion preventing functions |
| CN114497814B (en) * | 2022-04-18 | 2022-07-01 | 深圳市尚亿芯科技有限公司 | Lithium battery box with automatic fire extinguishing and explosion preventing functions |
| CN116315289A (en) * | 2023-05-18 | 2023-06-23 | 北京中冠宝新能源科技有限责任公司 | New energy battery with safety protection device and control system |
| CN116315289B (en) * | 2023-05-18 | 2023-08-22 | 北京中冠宝新能源科技有限责任公司 | New energy battery with safety protection device and control system |
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Application publication date: 20210831 |
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| WW01 | Invention patent application withdrawn after publication |