CN116895903B - Lithium battery with pressure relief outside and bulge prevention functions - Google Patents
Lithium battery with pressure relief outside and bulge prevention functions Download PDFInfo
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- CN116895903B CN116895903B CN202311135706.4A CN202311135706A CN116895903B CN 116895903 B CN116895903 B CN 116895903B CN 202311135706 A CN202311135706 A CN 202311135706A CN 116895903 B CN116895903 B CN 116895903B
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- lithium battery
- cooling
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- liquid
- buffer
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 130
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 130
- 230000002265 prevention Effects 0.000 title abstract description 5
- 230000007246 mechanism Effects 0.000 claims abstract description 90
- 238000001816 cooling Methods 0.000 claims abstract description 89
- 239000007788 liquid Substances 0.000 claims abstract description 65
- 239000000110 cooling liquid Substances 0.000 claims abstract description 44
- 238000007789 sealing Methods 0.000 claims abstract description 32
- 238000007599 discharging Methods 0.000 claims abstract description 7
- 239000000872 buffer Substances 0.000 claims description 77
- 230000003139 buffering effect Effects 0.000 claims description 11
- 239000002826 coolant Substances 0.000 claims description 10
- 238000006116 polymerization reaction Methods 0.000 claims description 9
- 238000012946 outsourcing Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims 5
- 230000006872 improvement Effects 0.000 description 8
- 230000035939 shock Effects 0.000 description 5
- 239000012530 fluid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002579 anti-swelling effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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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
- H01M50/317—Re-sealable arrangements
- H01M50/325—Re-sealable arrangements comprising deformable valve members, e.g. elastic or flexible valve members
- H01M50/333—Spring-loaded vent valves
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
-
- 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
-
- 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
- H01M50/394—Gas-pervious parts or elements
-
- 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 relates to the technical field of lithium batteries, in particular to a lithium battery with an outer-wrapping pressure relief and bulge prevention function. The lithium battery comprises a lithium battery body, wherein an exhaust mechanism is arranged on the surface of the lithium battery body, liquid collecting mechanisms for storing cooling liquid are symmetrically arranged on the sides of the exhaust mechanism, a cooling mechanism is arranged at the bottom of the liquid collecting mechanism, and the liquid collecting mechanism is used for discharging the cooling liquid stored by the liquid collecting mechanism to the cooling mechanism when the exhaust mechanism discharges gas, so that the cooling mechanism cools the lithium battery body. According to the invention, the exhaust plug is used for guiding gas to flow into the exhaust pipe and the air inlet pipe, so that the release of high-pressure gas in the lithium battery is realized, the gas can extrude the sealing plug to move in the air inlet pipe, part of cooling liquid extruded by the sealing plug flows into the cooling pipeline, the lithium battery is cooled through the cooling pipeline, and the working efficiency of the lithium battery is improved.
Description
Technical Field
The invention relates to the technical field of lithium batteries, in particular to a lithium battery with an outer-wrapping pressure relief and bulge prevention function.
Background
At present, a lithium battery is used as a battery with high energy density and long service life, and is widely applied to the fields of mobile electronic products, electric vehicles, energy storage and the like, and the application scenes have strict requirements on the safety of the lithium battery.
In the use process of the lithium battery, gas can be generated due to electrochemical reaction, however, at high temperature or in abnormal state, the gas generated by the lithium battery can be released excessively, heat is accumulated, so that the pressure in the lithium battery is increased, outsourcing pressure relief or bulge occurs, accidents such as explosion or fire disaster can be caused under serious conditions, and the personal and property safety is threatened.
At present, a scheme for preventing the external pressure release of a lithium battery container exists in the market, but a pressure sensor is mostly arranged outside the lithium battery and used for monitoring the air pressure inside the container, and once the air pressure exceeds a safety value, a power supply and ventilation are cut off, but the scheme can only monitor the external air pressure and can not timely sense the state of the internal lithium battery, so that real-time intervention can not be realized;
the lithium battery can generate higher heat during working, the current mode is to cool through liquid cooling or air cooling, but the liquid cooling or the air cooling is used in a single structure and does not generate auxiliary coordination with other structures, so that the current lithium battery structure can generate larger cost loss during generation;
secondly, because the environment that the lithium battery is used is comparatively extensive, when the lithium battery is used in some specific environment, for example install on some equipment or work piece, when the work piece takes place vibrations in the in-process of using, lead to the lithium battery to follow vibrations and bump to make the lithium battery easily take place the damage.
Disclosure of Invention
The invention aims to provide a lithium battery with an outer-wrapping pressure relief and bulge prevention function, so as to solve the problems in the background technology.
In order to achieve the above object, the present invention provides a lithium battery with an outer pressure relief and anti-swelling structure, comprising a lithium battery body, wherein an exhaust mechanism is mounted on the surface of the lithium battery body, the exhaust mechanism is used for exhausting the gas generated by the lithium battery body, liquid collecting mechanisms for storing cooling liquid are symmetrically arranged at the sides of the exhaust mechanism, a cooling mechanism is arranged at the bottom of the liquid collecting mechanism, the liquid collecting mechanism is used for discharging the cooling liquid stored by the liquid collecting mechanism to the cooling mechanism when the exhaust mechanism exhausts the gas, and the cooling mechanism cools the lithium battery body, wherein:
and in the process of cooling the lithium battery main body by the cooling mechanism, when the lithium battery main body vibrates, the cooling mechanism is also used for buffering the vibration suffered by the lithium battery main body.
As a further improvement of the technical scheme, the exhaust mechanism comprises an exhaust passage arranged on the surface of the lithium battery main body, the exhaust passage and the lithium battery main body are in a communicating state, an exhaust plug is slidably connected in the exhaust passage, a gas plug spring is arranged between the exhaust plug and the top of the exhaust passage, an exhaust pipe is communicated with the side surface of the exhaust passage, far away from the exhaust plug, of the exhaust passage, an exhaust hole is formed in the exhaust plug, and the exhaust hole and the exhaust pipe are used for exhausting gas.
As the further improvement of this technical scheme, gather liquid mechanism includes the liquid pipe, the liquid pipe sets up the side at the exhaust passage, the bottom intercommunication of liquid pipe has the intake pipe, the side and the blast pipe intercommunication of intake pipe, the inside slip of intake pipe is provided with the sealing plug, form a liquid room that is used for storing the coolant liquid between sealing plug and the liquid pipe, the side intercommunication of liquid pipe has the honeycomb duct, the honeycomb duct is used for discharging into coolant liquid to cooling mechanism.
As a further improvement of the technical scheme, a sealing plug spring is arranged between the liquid pipe and the sealing plug;
the inside of sealing plug has seted up exhaust passage, the air guide passageway has been seted up on the intake pipe, when air guide passageway and exhaust passage are in the level, the inside gas of intake pipe outwards discharges through exhaust passage, air guide passageway.
As a further improvement of the technical scheme, the cooling mechanism comprises a plurality of cooling pipelines, the cooling pipelines are in a communicating state, and one of the cooling pipelines is communicated with the flow guiding pipe.
As the further improvement of this technical scheme, a plurality of the middle part intercommunication of cooling tube has the buffer, be provided with buffer unit in the buffer, buffer unit is including sliding the inside buffer stopper of setting at the buffer, pressure plate is installed to the one end of buffer stopper, and buffer spring is installed to the other end, buffer spring installs in the buffer, when lithium cell main part and buffer unit receive pressure, makes the inside coolant liquid of pressure plate control buffer stopper extrusion buffer and cooling tube force the coolant liquid circulation flow in cooling tube.
As a further improvement of the technical scheme, one end of the cooling pipeline, which is far away from the buffer part, is communicated with a polymerization pipe, and a one-way valve is arranged on the polymerization pipe.
As a further improvement of the technical scheme, when the buffer plug extrudes the cooling liquid in the cooling pipeline and the buffer part, the buffer degree of the buffer plug to the lithium battery main body is increased by the cooling liquid.
As a further improvement of the technical scheme, the outer side of the lithium battery main body is provided with the fixing bin, the pressure plate is fixed on the fixing bin, and an elastic mechanism is arranged between the fixing bin and the lithium battery main body and is used for buffering the lithium battery main body again.
Compared with the prior art, the invention has the beneficial effects that:
1. in this outsourcing pressure release prevents the lithium cell of swell, the gas extrusion exhaust plug that is heated through the lithium cell and produces to exhaust plug guide gas inflow blast pipe and intake pipe realizes the release to the inside high-pressure gas of lithium cell, avoids the inside condition that appears swell or explode because of the unable discharge of high-pressure gas of lithium cell.
2. In the lithium battery with the outer-packed decompression preventing bulge, gas can extrude the sealing plug to move in the air inlet pipe, part of cooling liquid extruded by the sealing plug flows into the cooling pipeline, and the lithium battery is cooled through the cooling pipeline;
when the sealing plug moves, the sealing plug guides the gas in the gas inlet pipe and the gas outlet pipe to be discharged outwards, and the gas is discharged completely to release the space capable of storing the gas, so that the gas generated subsequently to the lithium battery is conveniently discharged.
3. In this outsourcing pressure release prevents the lithium cell of swell, make the buffering stopper at buffer portion internal motion when the lithium cell receives vibrations, because of the existence of coolant liquid in the cooling tube, the shock absorber that coolant liquid dispersion itself received when making buffering stopper buffering motion to make whole device increase the buffering shock resistance to the lithium cell.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a cross-sectional view of the overall structure of the present invention;
FIG. 3 is a schematic view of the structure A of FIG. 2 according to the present invention;
FIG. 4 is a cross-sectional view of the liquid collecting mechanism of the present invention;
FIG. 5 is a schematic view of the structure of FIG. 4B according to the present invention;
FIG. 6 is a cross-sectional view of the structure of the exhaust mechanism and the liquid collecting mechanism of the present invention;
FIG. 7 is a structural exploded view of the cooling mechanism of the present invention;
fig. 8 is a cross-sectional view of the structure of the fixed bin of the invention.
The meaning of each reference sign in the figure is:
10. a lithium battery main body;
20. an exhaust mechanism;
201. an exhaust passage; 202. a vent plug; 203. a gas plug spring; 204. an exhaust pipe; 205. an exhaust hole;
30. a liquid collecting mechanism;
301. a liquid tube; 302. an air inlet pipe; 303. a sealing plug; 304. a sealing plug spring; 305. a liquid chamber; 306. an air guide channel; 307. a flow guiding pipe; 308. an exhaust passage;
40. a cooling mechanism;
401. a cooling pipe; 402. a buffer section; 403. a polymerization tube; 404. a buffer plug; 405. a buffer spring; 406. a pressure plate;
50. a fixed bin; 501. a positioning spring; 502. a positioning plate; 503. and positioning the shaft.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Example 1
Referring to fig. 1-8, the embodiment provides a lithium battery with an outer pressure relief for preventing swelling, which comprises a lithium battery main body 10, wherein an exhaust mechanism 20 is installed on the surface of the lithium battery main body 10, the exhaust mechanism 20 is used for exhausting the gas generated by the lithium battery main body 10, a liquid collecting mechanism 30 for storing cooling liquid is symmetrically arranged at the side of the exhaust mechanism 20, a cooling mechanism 40 is arranged at the bottom of the liquid collecting mechanism 30, the liquid collecting mechanism 30 is used for discharging the cooling liquid stored by the liquid collecting mechanism to the cooling mechanism 40 when the exhaust mechanism 20 exhausts the gas, and the cooling mechanism 40 is used for cooling the lithium battery main body 10, wherein:
when the cooling mechanism 40 cools the lithium battery body 10 and the lithium battery body 10 vibrates, the cooling mechanism 40 is also used for buffering the vibration received by the lithium battery body 10; in this embodiment, the cooling mechanism 40 is fixed on the side of the lithium battery main body 10, and the cooling mechanism 40 can be connected and fixed with external equipment, when the lithium battery main body 10 is heated to cause larger heat, the lithium battery main body 10 discharges gas into the exhaust mechanism 20 to release the pressure of the lithium battery main body 10, so as to avoid the situation that the lithium battery main body 10 bulges and explodes, when the gas is discharged to the liquid collecting mechanism 30 through the exhaust mechanism 20, the liquid collecting mechanism 30 is controlled by the gas pressure to discharge the cooling liquid stored by the liquid collecting mechanism 30, so that the cooling liquid flows into the cooling mechanism 40, and the cooling liquid is uniformly dispersed in the cooling mechanism 40 to cool the lithium battery main body 10, thereby further reducing the problem that the lithium battery main body 10 is affected by heat to work efficiency; when the lithium battery body 10 vibrates during use, the cooling mechanism 40 buffers the lithium battery body 10, and during buffering, the cooling mechanism 40 controls the stored cooling liquid to be discharged outwards, at the moment, the cooling mechanism 40 extrudes the liquid to increase the buffering effect on the lithium battery body 10 so as to improve the protection buffering performance on the lithium battery body 10, and meanwhile, the cooling mechanism 40 extrudes and discharges the cooling liquid used by the cooling mechanism to cool the lithium battery body 10 outwards so as to facilitate the subsequent circulation cooling of the lithium battery body 10 by injecting new cooling liquid through the liquid collecting mechanism 30.
Further explanation is made for the technical scheme:
the exhaust mechanism 20 comprises an exhaust passage 201 arranged on the surface of the lithium battery body 10, the exhaust passage 201 and the lithium battery body 10 are in a communicating state, an exhaust plug 202 is slidably connected in the exhaust passage 201, a gas plug spring 203 is arranged between the exhaust plug 202 and the top of the exhaust passage 201, an exhaust pipe 204 is communicated with the side surface of the exhaust passage 201 away from the exhaust plug 202, an exhaust hole 205 is formed in the exhaust plug 202, and the exhaust hole 205 and the exhaust pipe 204 are used for exhausting gas; when gas exists in the lithium battery main body 10 (the gas in the lithium battery main body 10 is high-pressure hot gas formed by heating in the scheme), the gas extrudes the vent plug 202 to enable the vent plug 202 to move upwards along the vent channel 201, and the vent hole 205 on the vent plug 202 is of a T-shaped structure, namely when the vent hole 205 on the side surface of the vent plug 202 is close to the vent pipe 204, the gas flows out through the vent pipe 204 along the vent hole 205 on the bottom surface of the vent plug 202, and the gas in the lithium battery main body 10 is released, so that the gas pressure in the lithium battery main body 10 can be solved, and the explosion phenomenon caused by the fact that the lithium battery main body 10 bulges or cannot be discharged is avoided; after the gas is released through the exhaust pipe 204, the exhaust plug 202 quickly resets to seal the exhaust passage 201 and the lithium battery body 10 under the action of the gas plug spring 203, so as to ensure that the air tightness of the lithium battery body 10 is not affected.
The liquid collecting mechanism 30 comprises a liquid pipe 301, the liquid pipe 301 is arranged at the side of the exhaust passage 201, an air inlet pipe 302 is communicated with the bottom of the liquid pipe 301, the side face of the air inlet pipe 302 is communicated with the exhaust pipe 204, a sealing plug 303 is arranged in the air inlet pipe 302 in a sliding manner, a liquid chamber 305 for storing cooling liquid is formed between the sealing plug 303 and the liquid pipe 301, a flow guide pipe 307 is communicated with the side face of the liquid pipe 301, and the flow guide pipe 307 is used for discharging the cooling liquid into the cooling mechanism 40; the gas enters the air inlet pipe 302 through the exhaust pipe 204 and extrudes the sealing plug 303 to move upwards, and then the sealing plug 303 extrudes the cooling liquid box flow guide pipe 307 stored in the liquid chamber 305 to be discharged, so that the cooling liquid can enter the cooling mechanism 40 to cool the lithium battery main body 10, a certain cooling treatment is carried out on the lithium battery main body 10, the high-pressure gas in the lithium battery main body 10 is reduced, and the working efficiency of the lithium battery main body 10 is improved.
The inside of the sealing plug 303 is provided with an exhaust channel 308, the air inlet pipe 302 is provided with an air guide channel 306, when the air guide channel 306 and the air guide channel 308 are in a horizontal state, air in the air inlet pipe 302 is discharged outwards through the air guide channel 308 and the air guide channel 306, when the sealing plug 303 is extruded to upwards along the inside of the air inlet pipe 302 by the air, and cooling liquid in the liquid chamber 305 is discharged to the guide pipe 307, when the air guide channel 306 and the air guide channel 308 are in a horizontal state, the air can pass through the air guide channel 308 on the side along the air guide channel 308 at the bottom of the sealing plug 303 and is discharged outwards along the air guide channel 306, and at the moment, the air generated by the lithium battery main body 10 can be released outwards, so that the air can be completely discharged, the whole device can not generate an excessive temperature, and meanwhile, the air in the air outlet pipe 204 and the air inlet pipe 302 is more beneficial to the air inlet pipe 302 after being discharged, and the continuous use of the whole device is facilitated;
a sealing plug spring 304 is arranged between the liquid pipe 301 and the sealing plug 303, and through the arrangement of the sealing plug spring 304, a resistance is provided for the sealing plug 303 when moving upwards, and after the gas is released, the sealing plug spring 304 applies elastic pressure to the sealing plug 303 and forces the sealing plug 303 to reset and seal the liquid chamber 305, so that the cooling liquid is prevented from being continuously discharged outwards.
Specifically, the cooling mechanism 40 includes a plurality of cooling pipes 401, the plurality of cooling pipes 401 are in a communication state, one cooling pipe 401 is communicated with the flow guide pipe 307, and cooling liquid is discharged into the cooling pipe 401 through the flow guide pipe 307, so that the cooling liquid is dispersed in the plurality of cooling pipes 401, the plurality of cooling pipes 401 uniformly cool the lithium battery main body 10, and the working efficiency of the lithium battery main body 10 is improved.
The middle parts of the plurality of cooling pipelines 401 are communicated with a buffer part 402, a buffer assembly is arranged in the buffer part 402, the buffer assembly comprises a buffer plug 404 which is arranged in the buffer part 402 in a sliding way, a pressure plate 406 is arranged at one end of the buffer plug 404, a buffer spring 405 is arranged at the other end of the buffer plug, the buffer spring 405 is arranged in the buffer part 402, and when the lithium battery main body 10 and the buffer assembly are subjected to pressure, the pressure plate 406 controls the buffer plug 404 to squeeze cooling liquid in the buffer part 402 and the cooling pipeline 401, so that the cooling liquid is forced to circularly flow in the cooling pipeline 401; the pressure plate 406 can be connected with external fixing equipment, so that the lithium battery main body 10 is buffered and positioned through the buffer component, when the lithium battery main body 10 and the buffer component are vibrated, the pressure plate 406 controls the buffer plug 404 to slide in the buffer part 402, and the buffer part 402 is communicated with the cooling pipeline 401, so that the buffer plug 404 extrudes the cooling liquid in the buffer part 402 and the cooling pipeline 401, and at the moment, the cooling liquid can circularly flow in the cooling pipeline 401, so that the flowing cooling liquid uniformly cools the lithium battery main body 10;
meanwhile, when the cooling liquid circulates and uniformly mixes, the problem of low heat transfer efficiency caused by the fact that the cooling liquid in the cooling pipeline 401 is heated due to the fact that one side of the cooling pipeline 401 is in contact with the lithium battery main body 10 for a long time can be solved.
One end of the cooling pipeline 401, which is far away from the buffer part 402, is communicated with a polymerization pipe 403, a first one-way valve is arranged on the polymerization pipe 403, when the buffer plug 404 extrudes cooling liquid in the cooling pipeline 401, part of the cooling liquid flows into the polymerization pipe 403 through the cooling pipeline 401, the cooling liquid used for a long time is discharged out of the cooling pipeline 401, the cooling liquid in the cooling pipeline 401 is prevented from being heated and then continuously used to influence the heat dissipation and cooling of the lithium battery main body 10, and the cooling liquid stored in the polymerization pipe 403 is prevented from flowing back to the cooling pipeline 401 through the one-way valve, so that the whole device is ensured not to be influenced; wherein, the second one-way valve is installed on the flow guiding pipe 307, and the cooling liquid in the cooling pipeline 401 is prevented from flowing back into the liquid pipe 301 again.
Finally, when the buffer plug 404 extrudes the cooling liquid in the cooling pipeline 401 and the buffer part 402, the buffer degree of the buffer plug 404 to the lithium battery main body 10 is increased by the cooling liquid, and because the cooling liquid is fluid, when the buffer plug 404 extrudes the fluid, the shock force received by the buffer plug is reduced by the conduction of the fluid, and at the moment, the buffer shock-resistant effect of the buffer plug 404 to the lithium battery main body 10 is maximum, so that the buffer protection performance to the lithium battery main body 10 is improved.
It is worth noting that, fixed bin 50 is installed in the outside of lithium cell main part 10, pressure plate 406 is fixed on fixed bin 50, fixed bin 50's setting can produce certain protectiveness to lithium cell main part 10, be provided with elastic mechanism between fixed bin 50 and the lithium cell main part 10, buffer plug 404 and locating plate 502 again through elastic mechanism, elastic mechanism is including installing the locating spring 501 on fixed bin 50 inner wall, locating plate 502 is installed to one end of locating spring 501, locating plate 502 and lithium cell main part 10 fixed connection, and the inside of locating plate 502 is provided with locating shaft 503, locating shaft 503's one end is installed on locating plate 502, and locating shaft 503 and fixed bin 50 sliding connection, in this scheme, elastic mechanism is provided with the multiunit, fix on mechanical equipment through fixed bin 50, when lithium cell main part 10 or fixed bin 50 receive vibrations, lithium cell main part 10 can extrude buffer plug 404 and locating plate 502, buffer plug 404 is to lithium cell main part 10 in buffer bin 50, realize higher shock-resistant effect to lithium cell main part 10 to promote the lithium cell main part.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present invention, and are not intended to limit the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a outsourcing pressure release prevents lithium cell of swell, includes lithium cell main part (10), its characterized in that: the surface mounting of lithium cell main part (10) has exhaust mechanism (20), exhaust mechanism (20) are used for discharging the produced gas of lithium cell main part (10), the side symmetry of exhaust mechanism (20) is provided with the liquid mechanism (30) that gathers of storage coolant liquid, the bottom of gathering liquid mechanism (30) is provided with cooling mechanism (40), gather liquid mechanism (30) and be used for when exhaust mechanism (20) exhaust gas, make self stored coolant liquid to cooling mechanism (40) discharge, cool off lithium cell main part (10) through cooling mechanism (40), wherein:
when the cooling mechanism (40) cools the lithium battery main body (10) and the lithium battery main body (10) vibrates, the cooling mechanism (40) is also used for buffering the vibration received by the lithium battery main body (10);
the exhaust mechanism (20) comprises an exhaust passage (201) arranged on the surface of the lithium battery main body (10), the exhaust passage (201) is communicated with the lithium battery main body (10), an exhaust plug (202) is connected inside the exhaust passage (201) in a sliding manner, a gas plug spring (203) is arranged between the exhaust plug (202) and the top of the exhaust passage (201), an exhaust pipe (204) is communicated with the side surface, far away from the exhaust plug (202), of the exhaust passage (201), an exhaust hole (205) is formed in the exhaust plug (202), and the exhaust hole (205) and the exhaust pipe (204) are used for exhausting gas;
the liquid collecting mechanism (30) comprises a liquid pipe (301), the liquid pipe (301) is arranged at the side of the exhaust passage (201), an air inlet pipe (302) is communicated with the bottom of the liquid pipe (301), the side face of the air inlet pipe (302) is communicated with the exhaust pipe (204), a sealing plug (303) is slidably arranged in the air inlet pipe (302), a liquid chamber (305) for storing cooling liquid is formed between the sealing plug (303) and the liquid pipe (301), a flow guide pipe (307) is communicated with the side face of the liquid pipe (301), and the flow guide pipe (307) is used for discharging the cooling liquid to the cooling mechanism (40);
the cooling mechanism (40) comprises a plurality of cooling pipelines (401), wherein a plurality of cooling pipelines (401) are in a communication state, and one cooling pipeline (401) is communicated with the flow guide pipe (307).
2. The lithium battery of claim 1, wherein the outer packing pressure relief protection bulge is characterized in that: a sealing plug spring (304) is arranged between the liquid pipe (301) and the sealing plug (303);
an exhaust channel (308) is formed in the sealing plug (303), an air guide channel (306) is formed in the air inlet pipe (302), and when the air guide channel (306) and the exhaust channel (308) are in a horizontal state, air in the air inlet pipe (302) is discharged outwards through the exhaust channel (308) and the air guide channel (306).
3. The lithium battery of claim 1, wherein the outer packing pressure relief protection bulge is characterized in that: the middle part intercommunication of a plurality of cooling tube way (401) has buffer portion (402), be provided with buffer assembly in buffer portion (402), buffer assembly is including sliding buffer stopper (404) that set up inside buffer portion (402), pressure board (406) are installed to one end of buffer stopper (404), and buffer spring (405) are installed to the other end, buffer spring (405) are installed in buffer portion (402), when lithium cell main part (10) and buffer assembly receive pressure, make pressure board (406) control buffer stopper (404) extrude buffer portion (402) and the inside coolant liquid of cooling tube way (401), force coolant liquid circulation flow in cooling tube way (401).
4. The lithium battery of claim 3, wherein the outer packing pressure relief protection bulge is characterized in that: one end of the cooling pipeline (401) far away from the buffer part (402) is communicated with a polymerization pipe (403), and a one-way valve is arranged on the polymerization pipe (403).
5. The lithium battery of claim 3, wherein the outer packing pressure relief protection bulge is characterized in that: the buffer plug (404) increases the buffer degree of the buffer plug (404) to the lithium battery main body (10) by the cooling liquid when the cooling liquid in the cooling pipeline (401) and the buffer part (402) is extruded.
6. The lithium battery of claim 3, wherein the outer packing pressure relief protection bulge is characterized in that: the lithium battery is characterized in that a fixing bin (50) is arranged on the outer side of the lithium battery body (10), the pressure plate (406) is fixed on the fixing bin (50), an elastic mechanism is arranged between the fixing bin (50) and the lithium battery body (10), and the lithium battery body (10) is buffered again through the elastic mechanism.
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| CN202311135706.4A CN116895903B (en) | 2023-09-05 | 2023-09-05 | Lithium battery with pressure relief outside and bulge prevention functions |
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| CN116895903B true CN116895903B (en) | 2023-11-17 |
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| CN116895903A (en) | 2023-10-17 |
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