CN209709110U - A kind of formation of Li-ion batteries exhaust gear with self-sealing function - Google Patents
A kind of formation of Li-ion batteries exhaust gear with self-sealing function Download PDFInfo
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- CN209709110U CN209709110U CN201920485151.9U CN201920485151U CN209709110U CN 209709110 U CN209709110 U CN 209709110U CN 201920485151 U CN201920485151 U CN 201920485151U CN 209709110 U CN209709110 U CN 209709110U
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- self
- sealing
- lithium battery
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- formation
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model discloses a kind of formation of Li-ion batteries exhaust gear with self-sealing function, the negative pressure exhaust for formation of Li-ion batteries.The exhaust gear includes glue nail (1) and air-breathing bar (2)；The glue nail (1) is used to block the liquid injection hole in the lithium battery；The air-breathing bar (2) is used for through glue nail (1) and is connected to the inside of the lithium battery, for carrying out negative pressure exhaust to the lithium battery；Have on the center of the glue nail (1) and accommodates the perforative self-sealing orifice of the air-breathing bar (2) (101)；The self-sealing orifice (101) has elastic self-sealing.The exhaust gear effectively can carry out negative pressure exhaust to the lithium battery in formation process, and it can effectively avoid the electrolyte of lithium battery interior with the contact of outside air in exhaust process and after completing exhaust, to avoid electrolyte in outside air water and other foreign matters be in contact, and then raising lithium battery production quality；Meanwhile it can effectively save cost.
Description
Technical field
The utility model relates to formation of Li-ion batteries exhaust equipment technical field, and in particular to a kind of with self-sealing function
Formation of Li-ion batteries exhaust gear.
Background technique
Lithium ion secondary battery is the battery of a high-performance, environmental protection, energy storage.In recent years, lithium ion secondary battery is with height
Voltage, high energy is close, good cycle life, self-discharge rate are low, memory-less effect, it is environmentally protective the advantages that be widely used in quotient
With fields such as vehicle, special-purpose vehicle, electric bicycle, energy-storage system, medical instruments.To respond the market demand, lithium ion battery is improved
Security performance and service life, production and application cost control be the hot issue wherein studied.
In lithium ion battery preparation process, chemical conversion is one of important procedure.Chemical conversion i.e. fluid injection is shelved after battery into
The activation of row initial charge, forms the process of solid electrolyte interface film (SEI).In the chemical conversion stage, to keep negative terminal surface generation good
Good SEI film, using negative pressure chemical synthesis technology, liquid injection hole is unclosed when chemical conversion, generally will use corrosion-resistant suction nozzle alignment note at this time
Fluid apertures carries out negative inspiratory pressure, the gas generated when Battery formation is discharged, generates SIE film uniform and stable, improves battery performance.
Currently, liquid injection hole glue nail temporary enclosed after a fluid injection, pulls out glue nail before chemical conversion by nail pull out machine or manually,
Sprigging machine glue nail is reused after chemical conversion again by liquid injection hole temporary enclosed.Moreover, traditional negative pressure exhaust structure is only
It is that connection is closed using negative pressure exhaust pipeline and battery liquid-filling hole in Battery formation, the gas row generated when by Battery formation
It walks；And after the completion of chemical conversion, negative pressure exhaust pipeline and battery liquid-filling hole are detached from.In entire production process, from nail pulling to chemical conversion
Equipment and during transporting from formation device to plug pin, liquid injection hole is in opening-wide state, electrolyte and meeting and battery
Moisture in outside air and the contact of other foreign matters, and electrolyte meets water can generate HF, HF can destroy SEI film, cause it is secondary at
Film leads to battery performance deleterious effects battery quality, while bringing great security risk.Old solution be by sprigging machine,
Nail pull out machine, formation device, which are placed in drying shed, control wet, and this greatly increases workshop input costs, and these equipment
It cannot prevent manual operation completely, that is, influence the effect of drying shed, also reduce the comfort level of participant.
Utility model content
The purpose of this utility model is that for the defects or inadequacies for existing technologies, providing a kind of with self-sealing function
Formation of Li-ion batteries exhaust gear.The exhaust gear effectively can carry out negative pressure exhaust to the lithium battery in formation process, and arrange
It can effectively avoid the electrolyte of lithium battery interior with the contact of outside air during gas；After completing exhaust, pass through self-sealing
Effect isolation lithium battery interior environment and outside batteries environment, avoid the moisture in the substance and outside air of cell internal environment
And other foreign matters in outside air are in contact, and then improve the quality of lithium battery and the safety of battery.Meanwhile it can be effective
Save cost.
The purpose of this utility model is achieved through the following technical solutions.
A kind of formation of Li-ion batteries exhaust gear with self-sealing function, the negative pressure exhaust for formation of Li-ion batteries；The tool
The formation of Li-ion batteries exhaust gear for having self-sealing function includes glue nail and air-breathing bar；The glue nail is for blocking in the lithium electricity
On the liquid injection hole in pond；The air-breathing bar is used to follow closely and be connected to the inside of the lithium battery through the glue, for the lithium
Battery carries out negative pressure exhaust；
Have on the center of the glue nail and accommodates the perforative self-sealing orifice of air-breathing bar；The self-sealing orifice has
Elastic self-sealing.
Preferably, the intermediate position of the self-sealing orifice has a self-sealing lock, the both ends of the self-sealing orifice to it is described from
The part for sealing lock is through-hole；The self-sealing lock can strut to form through-hole by external force, be realized by the self-sealing lock
The self-sealing of the self-sealing orifice.
It is furthermore preferred that the self-sealing lock is the elastic from close of the inner wall upward hole central protuberance formation of the self-sealing orifice
Seal lock.
It is furthermore preferred that the through-hole of the both ends of the self-sealing orifice to the self-sealing lock is equal are as follows: by close to the self-sealing
The direction of lock and the gradually smaller bellmouth in aperture.
It is furthermore preferred that the self-sealing lock is located relatively at the nearly outer end of the liquid injection hole of the lithium battery.
It preferably, further include locating piece；The locating piece is used to be arranged in the chemical conversion press of the lithium battery；The suction
Gas bar is telescopic to run through setting on the locating piece；
When the air-breathing bar is followed closely through the glue and when the air-breathing bar detaches glue nail, the locating piece is used
It is kept in contact in glue nail, running through for the air-breathing bar is assisted to position and detach positioning, and prevent the glue nail with described
Air-breathing bar detaches.
It is furthermore preferred that the diameter of the locating piece is greater than the inlet diameter of the self-sealing orifice.
Compared with prior art, the utility model is had the following advantages and beneficial effects:
(1) the formation of Li-ion batteries exhaust gear of the utility model nails on the self-sealing orifice with self-sealing characteristics due to glue,
Make to carry out using the exhaust gear that effectively negative pressure can be carried out to the lithium battery in formation process during formation of Li-ion batteries exhaust
Exhaust, and can effectively avoid the electrolyte of lithium battery interior with the contact of air in exhaust process；And complete exhaust, air-breathing
After bar detaches glue nail, the self-sealing followed closely by glue closes self-sealing orifice so that lithium battery interior environment and lithium battery external ring is isolated
Border avoids other foreign matters in moisture and outside air in the substance and outside air of cell internal environment from being in contact, into
And improve the quality of lithium battery and the safety of battery.
(2) the formation of Li-ion batteries exhaust gear of the utility model nails on the self-sealing orifice with self-sealing characteristics due to glue,
Using the exhaust gear carry out the lithium battery of chemical conversion exhaust before and after the chemical conversion in without nail pulling and plug pin, eliminate nail pulling before chemical conversion
With the process of plug pin after chemical conversion, and lithium battery is in a sealed state, and imperforation transports circular flow, has both ensured lithium battery
Quality and battery safety, also save production line cost of investment；Meanwhile it is wet without drying shed control, reduce dry
Dry room cost of investment.
Detailed description of the invention
Fig. 1 is the part of the formation of Li-ion batteries exhaust gear with self-sealing function of the utility model in specific embodiment
Schematic cross-sectional view；
Attached drawing mark: 1- glue nail, 101- self-sealing orifice, 1010- self-sealing lock, 2- air-breathing bar, 3- locating piece, 4- lithium electricity
Pond, 40- lithium battery liquid injection hole.
Specific embodiment
The technical solution of the utility model is described in further detail below in conjunction with specific embodiments and drawings, but this
The protection scope and embodiment of utility model are without being limited thereto.In the description of the utility model embodiment, it should be noted that
The orientation or positional relationship of the instructions such as term "inner", "outside", "upper", "lower" is to be based on the orientation or positional relationship shown in the drawings,
Either the invention product using when the orientation or positional relationship usually put, or be only used for distinguishing description, merely to just
In description the utility model and simplify description, rather than the device or element of indication or suggestion meaning there must be specific side
Position is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention, can not be interpreted as instruction or
Imply relative importance.
Embodiment 1
It is shown in Figure 1, it is the formation of Li-ion batteries exhaust gear with self-sealing function of the present embodiment, is used for lithium battery
The negative pressure exhaust of chemical conversion.The exhaust gear includes glue nail 1 and air-breathing bar 2；The glue nail 1 is used to block in the lithium battery
On liquid injection hole 40；The air-breathing bar 2 is used for through glue nail 1 and is connected to the inside of the lithium battery 4, for the lithium
Battery 4 carries out negative pressure exhaust.
The closure of glue nail 1 part exposed on lithium battery liquid injection hole 40 is head, and is blocked in lithium battery liquid injection hole 40
The part for going up and entering to lithium battery interior is tail portion.The head diameter of glue nail 1 is greater than tail diameter, to avoid whole glue nail 1
It fills in lithium battery, and is conducive to complete the nail pulling after battery preparation.
Wherein, have on the center of glue nail 1 and accommodate the perforative self-sealing orifice 101 of the air-breathing bar 2；It is described
Self-sealing orifice 101 has elastic self-sealing.
When carrying out the negative pressure exhaust that lithium battery 4 is melted into using the exhaust gear of the present embodiment, glue nail 1 is blocked in lithium battery
Liquid injection hole 40 on, and the self-sealing orifice 101 on glue nail 1 has elastic self-sealing, begins in the case where no external force struts effect
It keeps closed eventually, to guarantee the sealing of lithium battery 4, the electrolyte in lithium battery is avoided to contact with air and destroy SEI film；And
Air-breathing bar 2 is mounted on chemical conversion press.When carrying out negative pressure exhaust, chemical conversion press drives air-breathing bar 2 to push, and makes air-breathing bar 2
One end gradually strut the self-sealing orifice 101 on glue nail 1 and enter to the inside of lithium battery 4, the other end of air-breathing bar 2 is communicated with
Negative pressure cavity, to be connected to lithium battery interior and negative pressure cavity by air-breathing bar 2；Pass through negative pressure ventilation, the air of lithium battery interior again
It is discharged to outside lithium battery by air-breathing bar 2.After completing exhaust, air-breathing bar 2 is extracted, and glue nail 1 is in 2 withdrawal process of air-breathing bar
In due to elasticity effect be gradually recovered leakproofness, make lithium battery 4 continue keep sealing.
In this way, can be effectively in formation process during making using the exhaust gear progress chemical conversion exhaust of lithium battery 4
Lithium battery 4 carries out negative pressure exhaust, and in exhaust process due to the self-sealing of glue nail 1 can ensure air-breathing bar 2 and liquid injection hole it
Between leakproofness；And after completing exhaust, air-breathing bar 2 detaches glue nail 1, self-sealing orifice 101 is closed by the self-sealing of glue nail 1
Lithium battery interior environment and lithium battery external environment is isolated.The electrolyte of lithium battery interior and outer so can be effectively avoided always
The contact of portion's air, thus avoid electrolyte in outside air moisture and other foreign matters be in contact, and then improve lithium electricity
The production quality in pond.
Moreover, lithium battery 4 before and after the chemical conversion in be not necessarily to nail pulling and plug pin, eliminate before being melted into plug pin after nail pulling and chemical conversion
Process, and lithium battery 4 is in a sealed state, imperforation transport circular flow, had both ensured the quality and battery of lithium battery
Safety also saves production line cost of investment；Meanwhile it is wet without drying shed control, reduce drying shed cost of investment.
Specifically, the intermediate position of the self-sealing orifice 101 have self-sealing lock 1010, the two of the self-sealing orifice 101
End to the part of the self-sealing lock 1010 is through-hole.And the self-sealing lock 1010 can strut to form through-hole by external force,
During air-breathing bar 2 runs through under the drive for being melted into press and struts self-sealing orifice 101, one end of air-breathing bar 2 is first gradually stretched
The arrival end of self-sealing orifice 101 is crossed to the through-hole of self-sealing lock 1010, when arriving at self-sealing lock 1010, under external force by
It gradually struts self-sealing lock 1010 and is connected to the outlet end of self-sealing orifice 101 to the through-hole of self-sealing lock 1010, thus the company of completion
Logical lithium battery interior.In this way, realizing the self-sealing of the self-sealing orifice 101 by the self-sealing lock 1010.
In the present embodiment, the self-sealing lock 1010 is that the inner wall upward hole central protuberance of the self-sealing orifice 101 is formed
Elastic self-sealing lock, the elastic self-sealing lock formed along the circumferential inner wall of self-sealing orifice 101 to hole central protuberance is in valve
Closed position.
Moreover, the through-hole of the both ends of the self-sealing orifice 101 to the self-sealing lock 1010 is equal are as follows: by close described from close
Seal lock 1010 direction and the gradually smaller bellmouth in aperture.In the present embodiment, also have in the entrance head end of self-sealing orifice 101
The straight through-hole being connected to bellmouth, and the outlet tail end in self-sealing orifice 101 also has the straight through-hole being connected to bellmouth.
The structure of bellmouth designs, and makes air-breathing bar 2 in the process for entering in self-sealing orifice 101 and strutting self-sealing lock 1010
It is more smooth, and avoid the damage to air-breathing bar 2 and self-sealing lock 1010；Meanwhile the structure design of bellmouth makes self-sealing lock
The elastic self-sealing of 1010 bulge-structure is more superior, and self-sealing lock 1010 is effectively avoided to lead due to excessively thin along hole axial width
The defect of the elastic packing difference of cause, can effectively improve service life.
Further, shown in Figure 1 in the present embodiment, the self-sealing lock 1010 is located relatively at the lithium battery
The nearly outer end of liquid injection hole.Self-sealing lock 1010 is located relatively at the nearly outer end of lithium battery liquid injection hole 40, makes air-breathing bar 2 in external force
Under strut self-sealing lock 1010 during can utmostly reduce active force to lithium battery liquid injection hole 40, to avoid to lithium
The destruction in battery liquid-filling hole 40, and at the same time can effective guarantee self-sealing lock 1010 elastic telescopic space and make full use of from close
Seal the elastic self-sealing of lock 1010.
Further, in the present embodiment, as shown in Figure 1, the exhaust gear further includes locating piece 3；The locating piece 3 is used for
It is arranged on the chemical conversion press of the lithium battery；The air-breathing bar 2 is telescopic to run through setting on the locating piece 3.Institute
When stating self-sealing orifice 101 of the air-breathing bar 2 through glue nail 1, and the suction after the negative pressure exhaust for completing formation of Li-ion batteries
When gas bar 2 detaches glue nail 1, the locating piece 3 is used to be kept in contact with glue nail 1, assists running through for the air-breathing bar 2
Positioning is positioned and detached, and prevents the glue nail 1 from detaching with the air-breathing bar 2.
Specifically, 1 insertion of glue nail is blocked on lithium battery liquid injection hole 40 after 4 fluid injection of lithium battery；When chemical conversion, air-breathing
Bar 2 and locating piece 3 are driven by chemical conversion press to be pushed, and locating piece 3 stops after first contacting glue nail 1, and air-breathing bar 2 continues through positioning
Block 3 pushes, until the self-sealing orifice 101 followed closely glue on 1 struts and enter the inside of lithium battery, progress negative pressure exhaust.Chemical conversion
After, air-breathing bar 2 first detaches；And during air-breathing bar 2 detaches, locating piece 3 continues to keep always to contact with glue nail 1, prevents
Glue nail 1 is extracted with air-breathing bar 2, the self-closed under elastic acting force of glue nail 1.After air-breathing bar 2 is completely withdrawn from glue nail 1, positioning
Block 3 releases and the contact of glue nail 1.
In the present embodiment, the diameter of the locating piece 3 is greater than the inlet diameter of the self-sealing orifice 101, determines to realize
Positioning of the position block 3 on glue nail 1, and 3 card plug of locating piece is avoided to enter in self-sealing orifice 101.
Above embodiments are only the preferred embodiment of the utility model, be only that the technical solution of the utility model make into
The detailed description of one step, but the protection scope of the utility model and embodiment are without being limited thereto, it is any without departing from the utility model
Change, combination, deletion, replacement or modification for being made under Spirit Essence and principle etc. are included in the protection model of the utility model
In enclosing.
Claims (7)
1. a kind of formation of Li-ion batteries exhaust gear with self-sealing function, for the negative pressure exhaust of formation of Li-ion batteries, feature
It is, including glue nail (1) and air-breathing bar (2)；The glue nail (1) is used to block the liquid injection hole in the lithium battery；It is described
Air-breathing bar (2) is used for through glue nail (1) and is connected to the inside of the lithium battery, for carrying out negative pressure to the lithium battery
Exhaust；
Have on the center of the glue nail (1) and accommodates the perforative self-sealing orifice of the air-breathing bar (2) (101)；It is described from close
Sealing of hole (101) has elastic self-sealing.
2. a kind of formation of Li-ion batteries exhaust gear with self-sealing function according to claim 1, which is characterized in that institute
The intermediate position for stating self-sealing orifice (101) has self-sealing lock (1010), and the both ends of the self-sealing orifice (101) are to described from close
The part for sealing lock (1010) is through-hole；The self-sealing lock (1010) can strut to form through-hole by external force, by it is described from
Seal the self-sealing that lock (1010) realize the self-sealing orifice (101).
3. a kind of formation of Li-ion batteries exhaust gear with self-sealing function according to claim 2, which is characterized in that institute
State the elastic self-sealing lock that the inner wall upward hole central protuberance that self-sealing lock (1010) are the self-sealing orifice (101) is formed.
4. a kind of formation of Li-ion batteries exhaust gear with self-sealing function according to claim 2, which is characterized in that institute
The through-hole for stating both ends to the self-sealing lock (1010) of self-sealing orifice (101) is equal are as follows: by close to the self-sealing lock (1010)
Direction and the gradually smaller bellmouth in aperture.
5. a kind of formation of Li-ion batteries exhaust gear with self-sealing function according to claim 2, which is characterized in that institute
State the nearly outer end that self-sealing lock (1010) is located relatively at the liquid injection hole of the lithium battery.
6. described in any item a kind of formation of Li-ion batteries exhaust gears with self-sealing function according to claim 1 ~ 5, special
Sign is, further includes locating piece (3)；The locating piece (3) is used to be arranged in the chemical conversion press of the lithium battery；The air-breathing
Bar (2) is telescopic to run through setting on the locating piece (3)；
It is described when the air-breathing bar (2) is through glue nail (1) and when the air-breathing bar (2) detaches the glue nail (1)
Locating piece (3) is used to be kept in contact with glue nail (1), assists running through for the air-breathing bar (2) to position and detach positioning, and prevent
Only the glue nail (1) detaches with the air-breathing bar (2).
7. a kind of formation of Li-ion batteries exhaust gear with self-sealing function according to claim 6, which is characterized in that institute
The diameter for stating locating piece (3) is greater than the inlet diameter of the self-sealing orifice (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920485151.9U CN209709110U (en) | 2019-04-11 | 2019-04-11 | A kind of formation of Li-ion batteries exhaust gear with self-sealing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920485151.9U CN209709110U (en) | 2019-04-11 | 2019-04-11 | A kind of formation of Li-ion batteries exhaust gear with self-sealing function |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111509299A (en) * | 2020-04-24 | 2020-08-07 | 合肥国轩高科动力能源有限公司 | Lithium battery negative pressure helium returning glue nail beating device |
| CN113394524A (en) * | 2021-06-30 | 2021-09-14 | 苏州清陶新能源科技有限公司 | Sealing assembly and battery negative pressure formation and secondary liquid supplementing method |
| WO2023061218A1 (en) * | 2021-10-11 | 2023-04-20 | 宁德时代新能源科技股份有限公司 | Gas discharge device for battery formation and formation system |
-
2019
- 2019-04-11 CN CN201920485151.9U patent/CN209709110U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111509299A (en) * | 2020-04-24 | 2020-08-07 | 合肥国轩高科动力能源有限公司 | Lithium battery negative pressure helium returning glue nail beating device |
| CN111509299B (en) * | 2020-04-24 | 2022-07-12 | 合肥国轩高科动力能源有限公司 | Lithium battery negative pressure helium returning glue nailing device |
| CN113394524A (en) * | 2021-06-30 | 2021-09-14 | 苏州清陶新能源科技有限公司 | Sealing assembly and battery negative pressure formation and secondary liquid supplementing method |
| CN113394524B (en) * | 2021-06-30 | 2023-11-10 | 苏州清陶新能源科技有限公司 | Sealing assembly and battery negative pressure formation and secondary fluid infusion method |
| WO2023061218A1 (en) * | 2021-10-11 | 2023-04-20 | 宁德时代新能源科技股份有限公司 | Gas discharge device for battery formation and formation system |
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