CN218525695U - Let out and explode subassembly, electric core casing, large capacity battery - Google Patents
Let out and explode subassembly, electric core casing, large capacity battery Download PDFInfo
- Publication number
- CN218525695U CN218525695U CN202222273139.6U CN202222273139U CN218525695U CN 218525695 U CN218525695 U CN 218525695U CN 202222273139 U CN202222273139 U CN 202222273139U CN 218525695 U CN218525695 U CN 218525695U
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- explosion
- explosion venting
- tube
- connecting piece
- pipe
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- 238000004880 explosion Methods 0.000 claims abstract description 154
- 238000013022 venting Methods 0.000 claims abstract description 138
- 239000003792 electrolyte Substances 0.000 claims abstract description 21
- 239000012528 membrane Substances 0.000 claims abstract 2
- 238000007789 sealing Methods 0.000 claims description 8
- 239000011258 core-shell material Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 238000004026 adhesive bonding Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 2
- 239000003546 flue gas Substances 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 6
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000005474 detonation Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052755 nonmetal Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000009469 supplementation Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Gas Exhaust Devices For Batteries (AREA)
Abstract
The application provides a let out and explode subassembly, electric core casing, large capacity battery, including letting out the explosion tube and letting out the explosion tube connecting piece, let out the explosion tube diameter and be less than let out the diameter of explosion tube connecting piece, let out the explosion tube and cup joint let out in the explosion tube connecting piece, let out the fixed setting on electric core casing of explosion tube connecting piece, let out the fixed explosion membrane of letting out that is provided with of explosion tube. The utility model discloses an explosion venting assembly only uses explosion venting pipe and explosion venting pipe connecting piece to connect the explosion venting work that electrolyte shared unit can accomplish whole large capacity battery, in the use, even take place battery thermal runaway, this stable in structure's connection fixed mode also can guarantee that the thermal runaway flue gas in the battery gets rid of according to predetermineeing the track, serious accidents such as battery explosion can not take place, and this application simple structure, small, light in weight, simple installation, safe firm.
Description
Technical Field
The utility model relates to a battery technology field especially relates to a let out and explode subassembly, electric core casing, large capacity battery.
Background
At present, most hard shell power batteries are provided with a safety explosion venting device, so that the problem that the internal pressure of the battery is released under an extreme condition is solved. The establishment and the implementation of relevant laws and standards of the rupture disk provide basis for scientifically and reasonably designing, manufacturing and using the rupture disk.
CN215933763U discloses a pressure relief valve, comprising a valve body having a first end and a second end and a through hole extending between and through the first end and the second end; the valve comprises a breathable film connected with the first end of the valve body, and a valve cover with a fluid channel and covering the breathable film, wherein the valve body comprises a flange structure which is positioned between the first end and the second end and extends out in the circumferential direction.
CN213546508U discloses a relief valve and battery package, the relief valve includes: the mounting body can be arranged at the pressure relief opening and is provided with an exhaust channel communicated with the pressure relief opening; the cover plate assembly comprises a cover plate which is arranged on the exhaust channel and is far away from the exhaust port in an openable and closable manner, and the cover plate is in a covering state capable of covering the exhaust port and in an opening state capable of being opened when the pressure in the exhaust port is larger than a preset value; and the exhaust mechanism is arranged in the exhaust channel and can promote the gas in the pressure relief port to be exhausted.
CN213278312U discloses a pressure release valve of battery package, includes: lower casing, upper housing and valve body. The lower case is mounted on the outer case of the battery pack. The upper shell is arranged on the lower shell, and the upper shell and the lower shell form a valve inner space. The valve body is arranged on the lower shell, the valve body is in sealing contact with the lower shell and divides the space in the valve into an inner space and an outer space, the valve body comprises an installation support, an elastic part and a breathable film, the installation support is connected with the elastic part into a whole, the installation support is arranged on the lower shell, the elastic part surrounds the breathable film to surround the breathable film in a central region, the elastic part is arranged in a peripheral region, and the elastic part is in sealing contact with the inner side wall of the lower shell in an interference fit mode. The inner side space is communicated with the inside of the battery pack, the outer side space is communicated with the outside, the pressure inside the battery pack and the external pressure are subjected to pressure balance through the breathable film, or the elastic part deforms and is separated from the inner side wall of the lower shell to form the pressure relief channel to quickly balance the pressure.
However, the explosion venting valve disclosed in the above patent is complex in structure, inconvenient to operate, poor in practical effect, and not suitable for use in a large-capacity battery structure.
SUMMERY OF THE UTILITY MODEL
For solving the problem, the utility model discloses a technical scheme be, provide an explosion venting assembly, including explosion venting pipe and explosion venting pipe connecting piece, explosion venting pipe external diameter is less than the internal diameter of explosion venting pipe connecting piece, explosion venting pipe cup joints in the explosion venting pipe connecting piece, explosion venting pipe connecting piece is fixed to be set up on electric core shell, explosion venting pipe is fixed to be provided with explosion venting film.
Preferably, the explosion venting pipe connecting piece is provided with a first connecting section and a second connecting section, the first connecting section is used for being sleeved with the explosion venting pipe, and the second connecting section is used for being fixedly connected with the battery cell shell.
Preferably, the diameter of the first connecting section is larger than the diameter of the second connecting section.
Preferably, a explosion venting pipe fixing part is arranged between the explosion venting pipe and the explosion venting pipe connecting piece, the explosion venting pipe fixing part is an annular groove arranged on the outer circumference of the explosion venting pipe, an annular bulge is correspondingly arranged on the inner circumference of the explosion venting pipe connecting piece, and the annular groove is clamped with the annular bulge; or
Let out the pipe fixing part and be in for setting up let out the interior ascending ring channel of pipe connecting piece of exploding, it is protruding that the periphery of pipe of exploding upwards correspondingly is provided with the annular to let out, the ring channel with the protruding joint of annular.
Preferably, the explosion venting pipe and the explosion venting pipe connecting piece are fixed by at least one of bonding, hot melting, welding and screw connection.
Preferably, the explosion venting pipe connecting piece is a nonmetal connecting pipe, and the explosion venting pipe is a metal pipe.
Preferably, an inner connecting piece is further arranged in the first connecting section, and the explosion venting pipe is detachably connected to the inner connecting piece.
In order to solve the above problem, the utility model discloses a technical scheme be, provide an electricity core shell, be provided with electrolyte shared pipeline on the electricity core shell, electrolyte shared pipeline explodes subassembly fixed connection with foretell letting out.
Preferably, the explosion venting assembly is provided with a sealing ring, and when the explosion venting pipe connecting piece is fixedly connected with the shared pipeline, the sealing ring seals the explosion venting pipe connecting piece and the electrolyte shared pipeline.
In order to solve the problem, the utility model discloses a technical scheme be, including battery case, battery case includes outer apron, be provided with as above-mentioned arbitrary on the outer apron let out explode the exhaust passage of subassembly, exhaust passage with the inside intercommunication of battery case, let out the blast pipe and pass outer apron extends to the battery case is external.
The utility model has the advantages that: the utility model discloses an explosion venting assembly only uses explosion venting pipe and explosion venting pipe connecting piece to connect the explosion venting work that electrolyte shared unit can accomplish whole large capacity battery, in the use, even take place battery thermal runaway, this stable in structure's connection fixed mode also can guarantee that the thermal runaway flue gas in the battery gets rid of according to predetermineeing the track, serious accidents such as battery explosion can not take place, and this application simple structure, small, light in weight, simple installation, safe firm.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of the structure of an explosion venting assembly in one embodiment;
FIG. 2 is a schematic sectional view of an explosion venting assembly in one embodiment;
FIG. 3 is a schematic diagram of the structure of an explosion venting assembly in one embodiment;
FIG. 4 is a schematic view of an explosion venting assembly in one embodiment;
fig. 5 is a schematic structural view of a large-capacity battery in one embodiment.
Reference numerals are as follows:
100-cell casing
200-electrolyte sharing pipeline
500-explosion venting assembly
51-explosion venting pipe
52-explosion venting pipe connecting piece
521-first connection section
522-second connection section
53-explosion venting film
54-exhaust channel
55-inner connecting piece
600-Battery case
61-outer cover plate
Detailed Description
While embodiments of the invention have been disclosed above, it is not intended that they be limited to the applications set forth in the specification and examples. It can be applicable to various and be fit for the utility model discloses a field completely. Additional modifications will readily occur to those skilled in the art. Therefore, the invention is not to be limited to the specific details and illustrations shown and described herein, without departing from the general concept as defined by the appended claims and their equivalents.
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The detailed description appropriately refers to the attached drawings, and particularly discloses an explosion venting assembly, a cell shell and a high-capacity battery. But detailed description thereof will be omitted unnecessarily. For example, detailed descriptions of already known matters and repetitive descriptions of actually the same configurations may be omitted. This is to avoid unnecessarily obscuring the following description, and to facilitate understanding by those skilled in the art. The drawings and the following description are provided for those skilled in the art to fully understand the present application, and are not intended to limit the subject matter recited in the claims.
All embodiments and alternative embodiments of the present application may be combined with each other to form new solutions, if not specifically stated. All technical and optional features of the present application may be combined with each other to form new solutions, if not otherwise specified.
The terms "comprises" and "comprising" as used herein mean either open or closed unless otherwise specified. For example, "comprising" and "comprises" may mean that other components not listed may also be included or included, or that only listed components may be included or included.
It is understood that relational terms such as "first," "second," and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
Example 1
As shown in fig. 1 to 3, the present embodiment provides an explosion venting assembly 500, which includes an explosion venting pipe 51 and an explosion venting pipe connector 52, wherein an outer diameter of the explosion venting pipe 51 is smaller than an inner diameter of the explosion venting pipe connector 52, the explosion venting pipe 51 is sleeved in the explosion venting pipe connector 52, the explosion venting pipe connector 52 is fixedly disposed on the cell casing 100, and an explosion venting film 53 is fixedly disposed on the explosion venting pipe 51.
In some embodiments, the explosion venting assembly 500 is disposed on a pressure relief pipeline after parallel connection of a plurality of cells. In other embodiments, the squib connector 52 is fixedly disposed on the electrolyte sharing system 200.
The explosion venting pipe connector 52 is provided with a first connecting section 521 and a second connecting section 522, wherein the first connecting section 521 is used for sleeving the explosion venting pipe 51, and the second connecting section 522 is used for fixedly connecting with an explosion venting port of the cell shell 100.
In some embodiments, the explosion vent pipe connector 52 is a straight cylinder shape, and in order to adapt to the sleeving of the explosion vent pipe 51, the inner diameter of the explosion vent pipe connector 52 is different, and the inner diameter of the part sleeved with the explosion vent pipe 51 is larger.
In some embodiments, to maintain the uniformity of the wall of the flare tube coupling 52, the diameter of the first coupling section 521 is greater than the diameter of the second coupling section 522. The different diameter coupling ends also create a natural transition from large to small in the overall profile of the detonator connector 52.
As shown in fig. 3, a venting tube fixing portion is disposed between the venting tube 51 and the venting tube connector 52, the venting tube fixing portion is an annular groove 551 disposed on the outer circumference of the venting tube, an annular protrusion 552 is correspondingly disposed on the inner circumference of the venting tube connector, and the annular groove 551 is engaged with the annular protrusion 552. In some embodiments, the explosion venting pipe fixing part is an annular groove arranged on the inner circumference of the explosion venting pipe connecting piece, an annular protrusion is correspondingly arranged on the outer circumference of the explosion venting pipe upwards, and the annular groove is clamped with the annular protrusion.
In some embodiments, the second connection segment 522 is fixedly connected to an electrolyte sharing line fixedly disposed on the cell casing. The electrolyte sharing pipeline comprises a pipeline 21, and a sealing ring is arranged on the pipeline 21 and clamped with the second connecting section 522.
The fixing mode of the explosion venting pipe 51 and the explosion venting pipe connecting piece 52 is at least one of bonding, hot melting, welding and screw connection. The explosion venting pipe connecting piece 52 is a nonmetal connecting pipe, and the explosion venting pipe 51 is a metal pipe.
As shown in fig. 4, an inner connecting member 55 is further provided in the first connecting section 521, and the explosion venting pipe 51 is detachably connected to the inner connecting member 55. The explosion venting pipe 51 is detachably arranged, so that the liquid replacement and liquid supplementation of the electrode liquid can be realized when the electrolyte sharing pipeline is connected.
Example 2
Fig. 4 is a schematic view of the assembled explosion venting assembly of the large-capacity battery. The large capacity battery includes an outer cap plate 61 and a can 600. The outer cover plate 61 is provided with the exhaust passage 54 of the explosion venting assembly 500, the exhaust passage 54 is communicated with the inside of the outer battery case 600, and the explosion venting pipe 51 extends to the outside of the battery case 600 through the outer cover plate 61. The explosion venting assembly 500 extends through the upper cover plate 61 to the outside of the battery case. An electrolyte sharing pipeline 200 is arranged on the cell casing 100, and the electrolyte sharing pipeline 200 is fixedly connected with the explosion venting assembly 500 described in embodiment 1.
The explosion venting assembly 500 is provided with a sealing ring that seals the explosion venting tube connector 52 with the electrolyte sharing pipeline 200 when the explosion venting tube connector 52 is fixedly connected with the electrolyte sharing pipeline 200.
As shown in fig. 1 to 3, the present embodiment provides an explosion venting assembly 500, which includes an explosion venting pipe 51 and an explosion venting pipe connector 52, wherein an outer diameter of the explosion venting pipe 51 is smaller than an inner diameter of the explosion venting pipe connector 52, the explosion venting pipe 51 is sleeved in the explosion venting pipe connector 52, the explosion venting pipe connector 52 is fixedly disposed on the cell casing 100, and an explosion venting film 53 is fixedly disposed on the explosion venting pipe 51.
In some embodiments, the explosion venting assembly 500 is disposed on a pressure venting pipeline after parallel connection of a plurality of cells. In other embodiments, the squib connector 52 is fixedly disposed on the electrolyte sharing system 200.
The explosion venting pipe connector 52 is provided with a first connecting section 521 and a second connecting section 522, the first connecting section 521 is used for sleeving the explosion venting pipe 51, and the second connecting section 522 is used for fixedly connecting with an explosion venting port of the cell shell 100.
In some embodiments, the detonation tube connector 52 is a straight tube, and in order to accommodate the sleeved detonation tube 51, the inside diameter of the detonation tube connector 52 is different, and the inside diameter of the portion sleeved with the detonation tube 51 is larger.
In some embodiments, to maintain uniformity of the wall of the detonator connector 52, the diameter of the first connector segment 521 is greater than the diameter of the second connector segment 522. The different diameter coupling ends also create a natural transition from large to small in the overall profile of the detonator connector 52.
As shown in fig. 3, a explosion venting pipe fixing portion is disposed between the explosion venting pipe 51 and the explosion venting pipe connecting member 52, the explosion venting pipe fixing portion is an annular groove 551 disposed on the outer circumference of the explosion venting pipe, an annular protrusion 552 is correspondingly disposed on the inner circumference of the explosion venting pipe connecting member, and the annular groove 551 is clamped with the annular protrusion 552. In some embodiments, the explosion venting pipe fixing part is an annular groove arranged on the inner circumference of the explosion venting pipe connecting piece, an annular protrusion is correspondingly arranged on the outer circumference of the explosion venting pipe upwards, and the annular groove is clamped with the annular protrusion.
In some embodiments, the second connection segment 522 is fixedly connected to an electrolyte sharing line fixedly disposed on the cell casing. The electrolyte sharing pipeline comprises a pipeline 21, and a sealing ring is arranged on the pipeline 21 and clamped with the second connecting section 522.
The explosion venting pipe 51 and the explosion venting pipe connecting piece 52 are fixed in at least one of bonding, hot melting, welding and screw connection. The explosion venting pipe connecting piece 52 is a nonmetal connecting pipe, and the explosion venting pipe 51 is a metal pipe.
As shown in fig. 4, an inner connecting member 55 is further provided in the first connecting section 521, and the explosion venting pipe 51 is detachably connected to the inner connecting member 55. The explosion venting pipe 51 is detachably arranged, so that the liquid replacement and liquid supplementation of the electrode liquid can be realized when the electrolyte sharing pipeline is connected.
The above summary of the present application is not intended to describe each disclosed embodiment or every implementation of the present application. The following description more particularly exemplifies illustrative embodiments. At various points throughout this application, guidance is provided through a list of embodiments that can be used in various combinations. In each instance, the list is provided only as a representative group and should not be construed as exhaustive.
Claims (10)
1. The utility model provides an let out and explode subassembly, its characterized in that, is including letting out the explosion tube and letting out the explosion tube connecting piece, let out the explosion tube outside diameter and be less than let out the inside diameter of explosion tube connecting piece, let out the explosion tube cup joint let out in the explosion tube connecting piece, let out the explosion tube connecting piece fixed the setting on electric core shell, let out the explosion tube fixed and be provided with let out the rupture membrane.
2. The explosion venting assembly of claim 1, wherein the explosion venting tube connector is provided with a first connecting section and a second connecting section, the first connecting section is configured to be sleeved with the explosion venting tube, and the second connecting section is configured to be fixedly connected with the cell casing.
3. The explosion venting assembly of claim 2, wherein said first connecting section has a diameter greater than a diameter of said second connecting section.
4. The explosion venting assembly according to claim 1, wherein a explosion venting pipe fixing part is arranged between the explosion venting pipe and the explosion venting pipe connecting piece, the explosion venting pipe fixing part is an annular groove arranged on the outer circumference of the explosion venting pipe, an annular protrusion is correspondingly arranged on the inner circumference of the explosion venting pipe connecting piece, and the annular groove is clamped with the annular protrusion; or the explosion venting pipe fixing part is arranged in an annular groove in the inner circumferential direction of the explosion venting pipe connecting piece, an annular protrusion is correspondingly arranged in the outer circumference of the explosion venting pipe in the upward direction, and the annular groove is clamped with the annular protrusion.
5. The explosion venting assembly of claim 1, wherein said explosion venting tube is secured to said explosion venting tube connector by at least one of adhesive bonding, heat staking, welding, and screwing.
6. The explosion venting assembly of claim 2 wherein said explosion venting tube connector is a non-metallic connecting tube and said explosion venting tube is a metallic tube.
7. A detonator assembly according to claim 2 wherein an inner connector is also provided in said first connecting section, said detonator being removably connected to said inner connector.
8. A battery cell casing, wherein an electrolyte sharing pipeline is arranged on the battery cell casing, and the electrolyte sharing pipeline is fixedly connected with the explosion venting assembly of any one of claims 1 to 7.
9. The cell casing of claim 8, wherein the explosion venting assembly is provided with a sealing ring that seals the explosion venting tube connector and the electrolyte shared line when the explosion venting tube connector is fixedly connected with the shared line.
10. A high capacity battery comprising a battery case, wherein the battery case comprises an outer cover plate, the outer cover plate is provided with a vent passage of the explosion venting assembly according to any one of claims 1 to 7, the vent passage is communicated with the inside of the battery case, and the explosion venting pipe passes through the outer cover plate and extends out of the battery case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222273139.6U CN218525695U (en) | 2022-08-29 | 2022-08-29 | Let out and explode subassembly, electric core casing, large capacity battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222273139.6U CN218525695U (en) | 2022-08-29 | 2022-08-29 | Let out and explode subassembly, electric core casing, large capacity battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218525695U true CN218525695U (en) | 2023-02-24 |
Family
ID=85243341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222273139.6U Active CN218525695U (en) | 2022-08-29 | 2022-08-29 | Let out and explode subassembly, electric core casing, large capacity battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218525695U (en) |
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2022
- 2022-08-29 CN CN202222273139.6U patent/CN218525695U/en active Active
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