CN212778236U - Device for improving baking efficiency of battery cell - Google Patents
Device for improving baking efficiency of battery cell Download PDFInfo
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- CN212778236U CN212778236U CN202021736235.4U CN202021736235U CN212778236U CN 212778236 U CN212778236 U CN 212778236U CN 202021736235 U CN202021736235 U CN 202021736235U CN 212778236 U CN212778236 U CN 212778236U
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- baffle
- aluminum
- battery cell
- plastic
- electric core
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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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Abstract
The utility model relates to a soft packet of lithium ion battery preparation technical field discloses an improve device that electric core toasted efficiency, including the baffle, fix the backup pad in the baffle top, inside the baffle was located an electric core plastic-aluminum membrane gasbag, the backup pad met with plastic-aluminum membrane gasbag top, and the backup pad both ends are provided with the portion of bending, and the portion of bending is located the plastic-aluminum membrane gasbag outside. The utility model has the advantages of it is following and effect: the device can enable the aluminum plastic film air bag to be always in a separated state, and in the battery cell baking process, moisture can be fully diffused from the inside to the outside of the pole piece, so that the battery cell baking efficiency is improved; and electric core is at the evacuation in-process, and inside gas can be taken out completely, can not appear because of inside naked electric core diaphragm crumple, the electric core surface fold that the local deformation of plastic-aluminum membrane caused, can improve electric core outward appearance well.
Description
Technical Field
The utility model relates to a soft packet of lithium ion battery preparation technical field, in particular to improve device that electric core toasted efficiency.
Background
With the wide demand and the vigorous development of new energy automobiles in society, the power battery is particularly concerned as a core part. Due to the large energy density, small internal resistance and relatively high safety, the soft package lithium ion battery is favored by broadcast battery enterprises in recent years. The main procedures of manufacturing the soft package lithium ion battery comprise pulping, coating, sheet making, positive and negative pole piece lamination, battery cell assembly and packaging, battery cell baking, liquid injection, formation, aging, secondary sealing, capacity grading and the like. Moisture control of the whole battery core manufacturing process is particularly important, and a lot of serious problems can be caused by unqualified battery core moisture, such as electrolyte lithium salt decomposition, battery core flatulence, poor cycle life, self-discharge and the like.
Wherein the moisture control before the liquid injection of the lithium ion battery is the most critical. At present, the battery cell baking mode before liquid injection generally adopts that the battery cell is tightly attached to be arranged in a battery cell storage box side by side, and then the storage box is placed into an oven to be baked. This method mainly has the following problems: the battery cell is baked for a relatively long time, and the surface of the battery cell after being baked has obvious wrinkles, which seriously affects the appearance of the battery cell. The main reasons are as follows: after general packaging, the aluminum-plastic film air bag above the battery cell main body is tightly attached or the opening of the air bag is narrow and the air path is single, and the phenomenon particularly occurs on the battery cell with smaller thickness. In the process of vacuumizing the oven, when the gas in the battery cell is not completely pumped out, the air bag above the battery cell is basically completely attached, and the situation can cause that the moisture of the battery cell in the aluminum-plastic film is diffused to an external channel to be narrow and the moisture diffusion rate is slow; in addition, in the process of vacuumizing the battery core, due to the fact that an outgoing airflow channel inside the battery core is narrow and airflow is disordered, a diaphragm of the inside naked battery core is wrinkled, an aluminum-plastic film is locally deformed, residual gas still exists in the battery core, and the appearance of the battery core is affected.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an improve device that electric core toasted efficiency has and can not only shorten electric core toasting time, also can show the effect that improves electric core outward appearance simultaneously.
The above technical purpose of the present invention can be achieved by the following technical solutions: the air bag bending device comprises a baffle and a supporting plate fixed above the baffle, wherein the baffle is positioned inside an aluminum-plastic film air bag, the supporting plate is connected with the top of the aluminum-plastic film air bag, bending parts are arranged at two ends of the supporting plate, and the bending parts are positioned on the outer side of the aluminum-plastic film air bag.
Through adopting above-mentioned technical scheme, when toasting electric core, prop open aluminium-plastic membrane gasbag opening, insert the aluminium-plastic membrane gasbag of electric core top with the baffle bottom in, aluminium-plastic membrane gasbag top is arranged in to the backup pad, and aluminium-plastic membrane gasbag both sides can make the baffle be located the aluminium-plastic membrane gasbag through the backup pad, and outside the portion of bending of backup pad both sides was located the aluminium-plastic membrane gasbag, can prevent that the baffle from falling into in the aluminium-plastic membrane gasbag.
The utility model discloses a further set up to: the backup pad thickness is between 1 ~ 2mm, and the backup pad is the ya keli material, and the surface is smooth, and the edges and corners is through the processing of polishing.
Through adopting above-mentioned technical scheme, the backup pad is the ya keli material, the glossy board in surface, and the edges and corners is through the processing of polishing, can not fish tail plastic-aluminum membrane gasbag, and thickness is 1 ~ 2mm, and the quality is lighter, and thinner board also easily warp to bend.
The utility model discloses a further set up to: the included angle between the bending part and the bottom surface of the supporting plate is not more than 90 degrees.
Through adopting above-mentioned technical scheme, the portion of bending forms the contained angle that is not more than 90 with the backup pad bottom surface, can make the position of baffle remain stable at evacuation, the in-process of blowing repeatedly, avoids the baffle to drop from the plastic-aluminum membrane gasbag top.
The utility model discloses a further set up to: the distance between the bent part and the baffle is 2-10 mm.
Through adopting above-mentioned technical scheme, the interval between portion of bending and the baffle is adjusted according to the size of battery, makes that the baffle is placed more stably.
The utility model discloses a further set up to: the depth of the baffle plate inserted into the aluminum-plastic film air bag is 1/2-2/3 of the height of the aluminum-plastic film air bag.
By adopting the technical scheme, the baffle is positioned in the aluminum-plastic film air bag, when the air bag is vacuumized, the two sides of the aluminum-plastic film air bag can be prevented from being tightly attached by the baffle, the aluminum-plastic film air bag can be always in a separated state, namely, the top of the aluminum-plastic film air bag is always kept with a certain opening, and the moisture in the battery cell pole piece in the aluminum-plastic film can be completely diffused. The gas in the clearance between the aluminum plastic film and the battery core can be completely pumped away, and the wrinkles on the outer surface of the battery core caused by the wrinkles of the diaphragm of the internal naked battery core and the local deformation of the aluminum plastic film can be avoided.
The utility model discloses a further set up to: the width of the baffle is 20-40 mm.
The utility model discloses a further set up to: the thickness of the baffle is between 5mm and 8 mm.
Through adopting above-mentioned technical scheme, the baffle width carries out corresponding adjustment along with the size of preparation electric core, and thickness is less can alleviate the weight of baffle, avoids pressing electric core plastic-aluminum membrane shell to warp.
The utility model discloses a further set up to: the supporting plate and the baffle plate are in a vertical crossing structure.
The utility model has the advantages that:
1. the device enables the battery cell aluminum plastic film shell to be always in a separation state, and in the battery cell baking process, moisture can be fully diffused from the inside of the pole piece to the outside, so that the battery cell baking efficiency is improved.
2. And electric core is at the evacuation in-process, and inside gas can be taken out completely, can not appear because of inside naked electric core diaphragm crumple, the electric core surface fold that the local deformation of plastic-aluminum membrane caused, can improve electric core outward appearance well.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the present embodiment.
Fig. 2 is a schematic diagram of the position relationship between the baffle, the support plate and the cell aluminum-plastic film air bag.
In the figure, 1, a baffle; 2. a support plate; 3. a bending part; 4. a battery cell aluminum plastic film shell; 401. an electric core; 402. an aluminum plastic film air bag; 403. and (4) opening.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the specific embodiments. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
The utility model provides an improve device that electric core toasted efficiency, as shown in fig. 1 ~ 2, including baffle 1 of ya keli material, the yakeli backup pad 2 that bonds the fastening together after high temperature melting, cooling is passed through to baffle 1 top, and backup pad 2 sets up with baffle 1 vertical cross, and 2 both sides of backup pad are deformed into two portions of bending 3 after passing through high temperature melting. The bottom of the support plate 2 is connected with two ends of an opening 403 of the aluminum plastic film air bag, and the bending parts 3 at two ends of the support plate 2 are positioned outside the cell aluminum plastic film air bag 402, so that the baffle plate 1 is inserted into the cell aluminum plastic film air bag 402. When the oven is vacuumized, the baffle plate 1 is positioned in the aluminum-plastic film air bag 402, and two ends of the opening 403 of the aluminum-plastic film air bag cannot be completely attached, so that the situation that the moisture in the pole piece of the battery cell 401 cannot be completely discharged due to too early attachment of the opening 403 of the aluminum-plastic film air bag or narrow opening 403 and single air path of the air bag in the vacuuming process is avoided; the baffle 1 can make the plastic-aluminum membrane gasbag 402 keep the open state all the time, and the inside and outside atmospheric pressure of vacuum pumping in-process plastic-aluminum membrane shell 4 is balanced, and the air current is even, has also avoided electric core 401 inside diaphragm to crumple, the local deformation of plastic-aluminum membrane in vacuum pumping to influence the problem of electric core 401 outward appearance.
Preferably, the thickness of the support plate 2 is 1mm, the width of the baffle plate 1 is 40mm, the thickness of the baffle plate 1 is 5mm, and the depth of the baffle plate 1 inserted into the cell aluminum-plastic film airbag 402 is 1/2 of the height of the cell aluminum-plastic film airbag 402.
Further optimized, the included angle between the bending part 3 and the bottom surface of the support plate 2 is 90 degrees, and the distance between the bending part 3 and the baffle plate 1 is 10 mm.
The utility model provides an improve device theory of operation that electric core toasted efficiency: before baking the battery cell 401, opening 403 of the battery cell aluminum-plastic film airbag is opened, the bottom of the baffle plate 1 is inserted into the aluminum-plastic film airbag 402 above the battery cell 401, the support plate 2 is arranged at the top of the aluminum-plastic film airbag 402, the baffle plate 1 can be positioned in the aluminum-plastic film airbag 402 through the support plate 2 at two sides of the aluminum-plastic film airbag 402, the bent parts 3 at two sides of the support plate 2 are positioned outside the aluminum-plastic film airbag 402, and the baffle plate 1 can be prevented from falling into the aluminum-plastic film airbag 402; then, the battery cell 401 with the baffle 1 is placed into an oven for baking, in the baking process, the aluminum plastic film air bag 402 is always in a separated state under the action of the baffle 1, and moisture can be fully diffused outwards from the interior of the battery cell 401; in the evacuation process, because the existence of baffle 1, plastic-aluminum membrane gasbag 402 can not laminate completely, can not appear because of inside naked electric core diaphragm crumple, electric core 401 surface fold that the local deformation of plastic-aluminum membrane caused. And after the battery cell is baked, packaging, cutting off the aluminum plastic film air bag after packaging to obtain a standard battery cell, and finally performing processes such as liquid injection, charging activation and the like.
Claims (8)
1. The utility model provides an improve battery core and toast device of efficiency which characterized in that: including baffle (1), fix backup pad (2) of baffle (1) top, baffle (1) are located inside plastic-aluminum membrane gasbag (402), backup pad (2) meet with plastic-aluminum membrane gasbag (402) top, backup pad (2) both ends are provided with portion of bending (3), portion of bending (3) are located the plastic-aluminum membrane gasbag (402) outside.
2. The device of claim 1, wherein the device for improving the baking efficiency of the battery cell is characterized in that: the thickness of the support plate (2) is 1-2 mm.
3. The device of claim 1, wherein the device for improving the baking efficiency of the battery cell is characterized in that: the included angle between the bending part (3) and the bottom surface of the supporting plate (2) is not more than 90 degrees.
4. The device of claim 1, wherein the device for improving the baking efficiency of the battery cell is characterized in that: the distance between the bending part (3) and the baffle (1) is 2-10 mm.
5. The device of claim 1, wherein the device for improving the baking efficiency of the battery cell is characterized in that: the depth of the baffle (1) inserted into the aluminum-plastic film air bag (402) is 1/2-2/3 of the height of the aluminum-plastic film air bag (402).
6. The device of claim 1, wherein the device for improving the baking efficiency of the battery cell is characterized in that: the width of the baffle (1) is 20-40 mm.
7. The device of claim 1, wherein the device for improving the baking efficiency of the battery cell is characterized in that: the thickness of the baffle (1) is 5-8 mm.
8. The device of claim 1, wherein the device for improving the baking efficiency of the battery cell is characterized in that: the supporting plate (2) and the baffle (1) are in a vertical crossing structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021736235.4U CN212778236U (en) | 2020-08-19 | 2020-08-19 | Device for improving baking efficiency of battery cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021736235.4U CN212778236U (en) | 2020-08-19 | 2020-08-19 | Device for improving baking efficiency of battery cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212778236U true CN212778236U (en) | 2021-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021736235.4U Active CN212778236U (en) | 2020-08-19 | 2020-08-19 | Device for improving baking efficiency of battery cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212778236U (en) |
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2020
- 2020-08-19 CN CN202021736235.4U patent/CN212778236U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210930 Address after: 441000 No.18 Wuxi Road, high tech Zone, Xiangyang City, Hubei Province Patentee after: CAMEL GROUP NEW ENERGY CELL Co.,Ltd. Address before: Floor g6-1001, Wuhan New Energy Research Institute building, 999 Gaoxin Avenue, Donghu New Technology Development Zone, Wuhan City, Hubei Province, 430000 Patentee before: Camel Group Wuhan New Energy Technology Co.,Ltd. |
|
| TR01 | Transfer of patent right |