CN213516215U - Cylinder lithium ion battery gas tightness test fixture - Google Patents
Cylinder lithium ion battery gas tightness test fixture Download PDFInfo
- Publication number
- CN213516215U CN213516215U CN202022792931.3U CN202022792931U CN213516215U CN 213516215 U CN213516215 U CN 213516215U CN 202022792931 U CN202022792931 U CN 202022792931U CN 213516215 U CN213516215 U CN 213516215U
- Authority
- CN
- China
- Prior art keywords
- sealing
- lithium ion
- ion battery
- side wall
- connecting frame
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 37
- 238000007789 sealing Methods 0.000 claims abstract description 74
- 238000001514 detection method Methods 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 14
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 12
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052744 lithium Inorganic materials 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 11
- 239000008213 purified water Substances 0.000 description 9
- 229910001873 dinitrogen Inorganic materials 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- MZZUATUOLXMCEY-UHFFFAOYSA-N cobalt manganese Chemical compound [Mn].[Co] MZZUATUOLXMCEY-UHFFFAOYSA-N 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
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Abstract
The utility model discloses a belong to the technical field of lithium battery testing, in particular to a cylindrical lithium ion battery air tightness testing clamp, which comprises a connecting frame, wherein the top of the outer side wall of the connecting frame is provided with a sealing end cover, a sealing cylinder is arranged in the connecting frame, a connecting assembly is arranged in the connecting frame, a detection connecting pipe group is arranged in the connecting frame, nitrogen in an external nitrogen bottle enters the interior of a cylindrical lithium ion battery to be detected through an air inlet pipe, if the air tightness of the cylindrical lithium ion battery is not good, the external nitrogen can enter an air outlet pipe through the cylindrical lithium ion battery and enters external pure water in an observation chamber through the air outlet pipe, at the moment, the external pure water has bubbles, otherwise, no bubbles are generated, the operation is convenient, meanwhile, the connecting block and the connecting groove are matched to connect the sealing cylinder and the connecting, and further suitable for the air tightness detection of lithium ion batteries with different sizes.
Description
Technical Field
The utility model relates to a lithium ion battery airtight detection technical field specifically is a cylinder lithium ion battery gas tightness test fixture.
Background
The cylindrical battery is a battery with high capacity, long cycle life and wide use environment temperature. The lithium iron phosphate, lithium cobaltate, lithium manganate, cobalt manganese mixed and ternary material different systems are adopted, and the shells are all steel shells, so that the market distribution range is wide, and batteries with different material systems have different advantages. The cylindrical steel shell ternary system battery is mainly used, and the ternary system battery has the advantages of high capacity, high output voltage, good charge-discharge cycle performance, stable output voltage, capability of discharging with large current, stable electrochemical performance, wide working temperature range, environmental friendliness and low cost. The wide application is in power energy, electric bicycle, electric automobile, energy storage equipment, electric tool, unmanned aerial vehicle etc.. Therefore, the tightness test of the cylindrical battery is particularly important, and the main test items are the breaking pressure, the bursting pressure and the sealing airtightness of the cylindrical battery.
Existing cylindrical cell sealability tests are those which are soaked in water and those which are tested by venting the cell. However, the currently adopted test fixture is designed for a certain point size, the size limitation is large, and the lithium ion battery needs to be put into water for pressure test when the lithium ion battery is tested in the air tightness test.
SUMMERY OF THE UTILITY MODEL
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract of the specification and the title of the application to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made in view of the above and/or other problems with existing tightness test fixtures.
Therefore, the utility model aims at providing a cylinder lithium ion battery gas tightness test fixture can solve current cylinder battery leakproofness test and have and soak in aqueous, has through ventilating to the battery and test. However, the currently adopted test fixture is designed only for a certain point size, the size limitation is large, and the lithium ion battery needs to be put into water for pressure test when the air tightness of the conventional lithium ion battery is tested.
For solving the technical problem, according to the utility model discloses an aspect, the utility model provides a following technical scheme:
the utility model provides a cylinder lithium ion battery gas tightness test fixture which includes: the device comprises a connecting frame, a sealing end cover, a sealing barrel, a connecting assembly and a detection connecting pipe group, wherein the sealing end cover is arranged at the top of the outer side wall of the connecting frame, the sealing cylinder is arranged in the connecting frame and comprises a sealing cavity, a sealing groove and a connecting groove, the center of the inner side wall of the sealing cylinder is provided with the sealing cavity, the upper part of the sealing cavity corresponding to the inner side of the sealing cylinder is provided with the sealing groove, the left side and the right side of the bottom of the outer side wall of the sealing cylinder are provided with the connecting grooves, the connecting component is arranged in the connecting frame, the connecting component consists of a connecting seat, a fixed seat and a connecting block, the connecting seat is hermetically connected with the central position of the inner side wall of the connecting frame, the connecting seat inner side wall left and right sides all joint the fixing base, fixing base top integrated into one piece with the connecting groove snap-fit's connecting block, it locates to detect even the group of tubes in the link.
As a preferred scheme of cylinder lithium ion battery gas tightness test fixture, wherein: the detection connecting pipe set comprises an air inlet pipe and an air outlet pipe, the right end of the air inlet pipe penetrates to the inner side of the connecting frame, the right end of the air inlet pipe extends to the inside of the sealing cavity, and the air outlet pipe is communicated with the sealing cavity.
As a preferred scheme of cylinder lithium ion battery gas tightness test fixture, wherein: the right side wall of the sealing barrel is provided with a through hole corresponding to the air inlet pipe, and the through hole is matched with the cylindrical battery to be detected.
As a preferred scheme of cylinder lithium ion battery gas tightness test fixture, wherein: the observation room has been seted up to link inside wall bottom, link right side wall bottom through the connecting tube with the observation room intercommunication sets up, just the liquid outlet has been seted up on the link right side, the seal valve is installed to the liquid outlet lateral wall.
As a preferred scheme of cylinder lithium ion battery gas tightness test fixture, wherein: the left side and the right side of the outer side wall of the sealing end cover are connected with the connecting frame through fastening bolts, and a sealing gasket in sealing connection with the sealing groove is arranged at the central position of the bottom of the outer side wall of the sealing end cover.
Compared with the prior art: the gas outlet pipe is communicated with the sealing cavity, the external nitrogen bottle is opened to a certain pressure, and then nitrogen in the external nitrogen bottle enters the interior of the cylindrical lithium ion battery to be detected through the gas inlet pipe, if the air tightness of the cylindrical lithium ion battery is not good, external nitrogen can enter the air outlet pipe through the cylindrical lithium ion battery, enters the external purified water in the observation chamber through the air outlet pipe, the external purified water has bubbles at the moment, otherwise, no bubbles are generated, the operation is convenient, meanwhile, the connecting block and the connecting groove are matched to connect the sealing cylinder and the connecting seat, so that the sealing cylinders with different sizes are convenient to mount and dismount, and then be applicable to not unidimensional lithium ion battery's airtight detection, and let in the nitrogen gas of certain atmospheric pressure to the battery of sealed intracavity through the intake pipe, can then measure the disconnection pressure of battery block according to the size that lets in atmospheric pressure, suitability and accuracy height.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail with reference to the accompanying drawings and detailed embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor. Wherein:
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic view of a part of the structure of the present invention.
In the figure: 100 connecting frames, 110 observation chambers, 120 liquid outlets, 121 sealing valves, 200 sealing end covers, 210 fastening bolts, 220 sealing gaskets, 300 sealing cylinders, 310 sealing cavities, 320 sealing grooves, 330 connecting grooves, 400 connecting assemblies, 410 connecting seats, 420 fixing seats, 430 connecting blocks, 500 detection connecting pipe groups, 510 air inlet pipes and 520 air outlet pipes.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways than those specifically described herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Next, the present invention will be described in detail with reference to the schematic drawings, and in the detailed description of the embodiments of the present invention, for convenience of explanation, the sectional view showing the device structure will not be enlarged partially according to the general scale, and the schematic drawings are only examples, and should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
The utility model provides a cylinder lithium ion battery gas tightness test fixture through xxxx, please refer to 1-2, include, link 100, end cover 200, a sealed section of thick bamboo 300, coupling assembling 400 and detection link group 500.
With reference to fig. 1-2, the bottom of the inner sidewall of the connecting frame 100 is provided with an observation chamber 110, the bottom of the right sidewall of the connecting frame 100 is communicated with the observation chamber 110 through a connecting pipe, a proper amount of external purified water is injected into the observation chamber through the connecting pipe for airtight detection, the right side of the connecting frame 100 is provided with a liquid outlet 120, the outer sidewall of the liquid outlet 120 is sleeved with a sealing valve 121, and the sealing valve 121 is used for controlling the connection state of the liquid outlet 120;
referring to fig. 1, the left and right sides of the outer sidewall of the end cap 200 are connected to the connecting frame 100 through fastening bolts 210, and a sealing washer 220 is screwed to the center of the bottom of the outer sidewall of the end cap 200 and is connected to the sealing groove 320;
referring to fig. 1-2, the sealing cylinder 300 is disposed in the connecting frame 100, and specifically, the sealing cylinder 300 includes a sealing cavity 310, a sealing groove 320 and a connecting groove 330, a through hole (not shown) is disposed on a right side wall of the sealing cylinder 300 corresponding to the air inlet pipe 510, the through hole is adapted to a cylindrical battery to be tested, nitrogen gas with a certain air pressure is introduced into the battery in the sealing cavity 310 through the air inlet pipe 510, a breaking pressure of a battery cap is measured according to the introduced air pressure, the sealing cavity 310 adapted to the size of the battery is disposed at a central position of an inner side wall of the sealing cylinder 300, the sealing groove 320 is disposed on the upper side of the sealing cavity 310 corresponding to the inner side of the sealing cylinder 300, the sealing cavity 310 is sealed by the cooperation of the sealing groove 320 and the sealing gasket 220, so as to prevent external air from flowing into and affecting a measurement result, the connecting slot 330 is used for connecting the sealing cylinder 300 and the connecting seat 410 in a matching way with the fixing seat 420;
continuing to refer to fig. 1-2, the connection assembly 400 is disposed in the connection frame 100, the connection assembly 400 is composed of a connection seat 410, a fixed seat 420 and a connection block 430, specifically, the connection seat 410 is hermetically connected to the central position of the inner side wall of the connection frame 100, the fixed seat 420 is clamped on the left and right sides of the inner side wall of the connection seat 410, the connection block 430 clamped and matched with the connection groove 330 is integrally formed at the top end of the fixed seat 420, the connection block 430 is used for being matched with the connection groove 330 to connect the sealing cylinder 300 and the connection seat 410, so that the sealing cylinders 300 with different sizes can be conveniently mounted and dismounted;
continuing to refer to fig. 1-2, the detecting connecting tube set 500 is disposed in the connecting frame 100, the detecting connecting tube set 500 includes an air inlet tube 510 and an air outlet tube 520, the right end of the air inlet tube 510 penetrates the inner side of the connecting frame 100, the air inlet tube 510 is used as a nitrogen gas conveying channel, the right end of the air inlet tube 510 extends into the sealed cavity 310, the air outlet tube 520 is communicated with the sealed cavity 310, by opening the external nitrogen gas bottle to a certain pressure, the nitrogen gas in the external nitrogen gas bottle enters the interior of the cylindrical lithium ion battery to be detected through the air inlet tube 510, if the air tightness of the cylindrical lithium ion battery is not good, the external nitrogen gas enters the air outlet tube 520 through the cylindrical lithium ion battery and enters the external purified water in the observation chamber 110 through the air outlet tube 520, at this time, the external purified water, the external purified water has no bubbles, and the inspector can judge the air tightness of the cylindrical lithium ion battery according to the existence of the bubbles in the external purified water in the observation chamber 110.
The working principle is as follows: when the utility model is used, the air outlet pipe 520 is communicated with the sealed cavity 310, the external nitrogen bottle is opened to a certain pressure, at the moment, the nitrogen in the external nitrogen bottle enters the interior of the cylindrical lithium ion battery to be detected through the air inlet pipe 510, if the air tightness of the cylindrical lithium ion battery is not good, the external nitrogen can enter the air outlet pipe 520 through the cylindrical lithium ion battery and enters the external purified water in the observation room 110 through the air outlet pipe 520, at the moment, the external purified water has bubbles, otherwise, no bubbles are generated, the operation is convenient, meanwhile, the connecting block 430 is matched with the connecting groove 330 to connect the sealing cylinder 300 with the connecting seat 410, the sealing cylinders 300 with different sizes are convenient to install and disassemble, the air tightness detection device is further suitable for the air tightness detection of the lithium ion batteries with different sizes, in addition, the nitrogen with a certain air pressure is introduced into the battery in the sealed, the applicability and the accuracy are high.
While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features of the disclosed embodiments of the present invention can be used in any combination with each other, and the non-exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (5)
1. The utility model provides a cylinder lithium ion battery gas tightness test fixture which characterized in that includes: the connecting frame (100), the sealing end cover (200), the sealing cylinder (300), the connecting assembly (400) and the detection connecting pipe assembly (500), wherein the sealing end cover (200) is arranged at the top of the outer side wall of the connecting frame (100), the sealing cylinder (300) is arranged in the connecting frame (100), the sealing cylinder (300) comprises a sealing cavity (310), a sealing groove (320) and a connecting groove (330), the sealing cavity (310) is formed in the central position of the inner side wall of the sealing cylinder (300), the sealing groove (320) is formed above the sealing cavity (310) corresponding to the inner side of the sealing cylinder (300), the connecting groove (330) is formed in the left side and the right side of the outer side wall of the sealing cylinder (300), the connecting assembly (400) is arranged in the connecting frame (100), and the connecting assembly (400) consists of a connecting seat (410), a fixing seat (420) and a, connecting seat (410) sealing connection in link (100) inside wall central point puts, the equal joint of connecting seat (410) inside wall left and right sides fixing base (420), fixing base (420) top integrated into one piece with connecting groove (330) clamps complex connecting block (430), it locates to detect even nest of tubes (500) in link (100).
2. The cylindrical lithium ion battery airtightness test fixture according to claim 1, wherein the detection connecting tube set (500) comprises an air inlet tube (510) and an air outlet tube (520), the right end of the air inlet tube (510) penetrates through the inside of the connecting frame (100), the right end of the air inlet tube (510) extends into the sealed cavity (310), and the air outlet tube (520) is communicated with the sealed cavity (310).
3. The cylindrical lithium ion battery airtightness test fixture according to claim 2, wherein a through hole is formed in the right side wall of the sealing cylinder (300) at a position corresponding to the air inlet pipe (510), and the through hole is adapted to a cylindrical battery to be tested.
4. The cylindrical lithium ion battery airtightness test fixture according to claim 1, wherein an observation chamber (110) is provided at a bottom portion of an inner side wall of the connection frame (100), a bottom portion of a right side wall of the connection frame (100) is communicated with the observation chamber (110) through a connecting pipe, a liquid outlet (120) is provided at a right side of the connection frame (100), and a sealing valve (121) is installed on an outer side wall of the liquid outlet (120).
5. The cylindrical lithium ion battery airtightness test fixture according to claim 1, wherein the left and right sides of the outer side wall of the end cap (200) are connected to the connecting frame (100) through fastening bolts (210), and a sealing gasket (220) sealingly connected to the sealing groove (320) is disposed at the central position of the bottom of the outer side wall of the end cap (200).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022792931.3U CN213516215U (en) | 2020-11-27 | 2020-11-27 | Cylinder lithium ion battery gas tightness test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022792931.3U CN213516215U (en) | 2020-11-27 | 2020-11-27 | Cylinder lithium ion battery gas tightness test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213516215U true CN213516215U (en) | 2021-06-22 |
Family
ID=76426356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022792931.3U Expired - Fee Related CN213516215U (en) | 2020-11-27 | 2020-11-27 | Cylinder lithium ion battery gas tightness test fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213516215U (en) |
-
2020
- 2020-11-27 CN CN202022792931.3U patent/CN213516215U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210622 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |