CN203826480U - Extrusion coating die head for lithium ion batteries - Google Patents
Extrusion coating die head for lithium ion batteries Download PDFInfo
- Publication number
- CN203826480U CN203826480U CN201420246337.6U CN201420246337U CN203826480U CN 203826480 U CN203826480 U CN 203826480U CN 201420246337 U CN201420246337 U CN 201420246337U CN 203826480 U CN203826480 U CN 203826480U
- Authority
- CN
- China
- Prior art keywords
- die head
- lithium ion
- slurry
- lower die
- consistency
- Prior art date
- 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.)
- Expired - Lifetime
Links
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 19
- 238000007765 extrusion coating Methods 0.000 title abstract 3
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000001125 extrusion Methods 0.000 claims description 15
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 239000002002 slurry Substances 0.000 abstract description 14
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 description 10
- 238000000576 coating method Methods 0.000 description 10
- 238000009826 distribution Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Battery Electrode And Active Subsutance (AREA)
Abstract
The utility model discloses an extrusion coating die head for lithium ion batteries. The die head comprises a feeding valve, a feeding pipe, an upper die head, a lower die head, a bolt and a mesh gasket, wherein the feeding pipe is connected with the lower die head, the lower die head is connected and fixed with the upper die head through the bolt, and the mesh gasket is installed above a material cavity of the lower die head in parallel. Compared with the prior art, the extrusion coating die head for the lithium ion batteries has the advantages that the reasonably-punched mesh gasket is installed in the material cavity, so that slurry can be evenly distributed in a gap layer through holes of the mesh gasket, the uniform transverse pressure of the slurry in the gap layer of the die head is guaranteed, the transverse consistency of the slurry when the slurry is extruded out of slits is good, the consistency of transverse weightof pole pieces is ensured to be high finally, and the consistency of cell properties is realized.
Description
[technical field]
The utility model relates to lithium ion battery apparatus field, relates in particular to a kind of extrusion coated die head of lithium ion battery.
[background technology]
The proportion of the battery core performance of lithium ion battery among battery pack overall performance is very large, because in the total system of many group battery core series and parallels, single battery core performance inconsistent by causing whole battery performance according to the poorest performance, even can cause the inefficacy of whole battery pack.In affecting the factors of battery consistency, pole piece weight consistency is the most important thing, and it not only directly affects the whole volume performance of battery pack, also affects voltage, power and the life-span etc. of whole group of battery core, and decision pole coating quality, be exactly coating machine operation.
Traditional extrusion coated mould head feeding mode is by screw pump feed at present, then through gap valve system, opens respectively different valves when coating and gap, and slurry enters buffering cavity from the feeder sleeve at die head bottom or back.Owing to can not opening too much inlet in cavity, adding spreading mass is the fluid of thickness, after entering die cavity, needs depended on pressure to flow to cavity everywhere, then by a slit, is expressed into foil surface by follow-up continuous pressure.Due to the difference of slurry in the mobile distance of inside cavity and distribution, will inevitably cause slurry at slit place, to have transverse pressure non-uniform phenomenon, slurry skewness, it is inhomogeneous that final result is exactly coating pole piece surface density cross direction profiles out, and this impact of consistency on battery core capacity is very large.
In view of above drawback, be necessary to provide a kind of extrusion coated die head of lithium ion battery to overcome above-mentioned defect in fact.
[utility model content]
The purpose of this utility model is to provide a kind of extrusion coated die head of lithium ion battery, and it makes the transverse pressure of coating sizing-agent more even, makes the coating horizontal distribution of weight of pole piece out more even, has promoted the consistency of battery core capacity.
To achieve these goals, the utility model adopts following technical scheme: a kind of extrusion coated die head of lithium ion battery, it comprises inlet valve, feeder sleeve, upper die head, lower die head, bolt, mesh pad, described feeder sleeve connects lower die head, described lower die head and upper die head are bolted fixing, and described mesh pad is installed in parallel in the top, material chamber of counterdie point.
As a kind of improvement of the extrusion coated die head of a kind of lithium ion battery of the utility model, the material of described mesh pad is stainless steel;
As a kind of improvement of the extrusion coated die head of a kind of lithium ion battery of the utility model, the position of opening of described mesh pad is that middle rare both sides are close.
During coating, when slurry enters through feeder sleeve behind the material chamber of lower die head, owing to being subject to the pressure of follow-up supplied materials, slurry in material chamber can enter clearance layer by the perforate uniform distribution of mesh pad, laterally pressure is even in the clearance layer of die head to have guaranteed slurry, and then horizontal high conformity while guaranteeing that slurry is extruded slit, finally guarantee that the consistency of the horizontal weight of pole piece is high, realize the consistency of battery core performance.
The beneficial effects of the utility model are: the perforate by mesh pad is led, the clearance layer that makes data evenly enter coating die head, and while having guaranteed pole coating, the consistency of horizontal weight is high, realizes the consistency of battery core performance.
[accompanying drawing explanation]
Fig. 1 is the schematic diagram of the extrusion coated die head of a kind of lithium ion battery of the utility model;
Fig. 2 is the mesh pad figure of the extrusion coated die head of a kind of lithium ion battery of the utility model.
[embodiment]
Please refer to shown in Fig. 1, Fig. 2, below in conjunction with case study on implementation, the utility model is described in further detail.
The extrusion coated die head of a kind of lithium ion battery of the utility model, execution mode is such: lower die head 1 is connected and is fixed by bolt 7 with upper die head 2, feeder sleeve 4 connects the material chamber 5 of lower die head, and mesh pad 6 is arranged on the material top in chamber 5 and the junction of clearance layer 9.
When coating machine is worked, open inlet valve 3, slurry enters the material chamber 5 of lower die head by feeder sleeve 4, through mesh pad 6, be uniformly distributed and enter in clearance layer 9 again, owing to being subject to the pressure of follow-up supplied materials, slurry flows to clearance aperture 8 by clearance layer 9, is evenly coated in along with steel Kun 10 rotates and foil 11 surfaces of average rate process.
The extrusion coated die head of a kind of lithium ion battery of the utility model, be not restricted to described in specification and execution mode, therefore for the personnel of familiar field, can easily realize additional advantage and modification, therefore in the situation that do not deviate from the spirit and scope of the universal that claim and equivalency range limit, the utility model is not limited to specific details, representational equipment and illustrates here and the examples shown of describing.
Claims (3)
1. the extrusion coated die head of a lithium ion battery, it comprises inlet valve, feeder sleeve, upper die head, lower die head, bolt, mesh pad, described feeder sleeve connects lower die head, described lower die head and upper die head are bolted fixing, it is characterized in that: described mesh pad is installed in parallel in the top, material chamber of counterdie point.
2. the extrusion coated die head of a kind of lithium ion battery according to claim 1, is characterized in that: the material of described mesh pad is stainless steel.
3. the extrusion coated die head of a kind of lithium ion battery according to claim 1, is characterized in that: the position of opening of described mesh pad is that middle rare both sides are close.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420246337.6U CN203826480U (en) | 2014-05-06 | 2014-05-06 | Extrusion coating die head for lithium ion batteries |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420246337.6U CN203826480U (en) | 2014-05-06 | 2014-05-06 | Extrusion coating die head for lithium ion batteries |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203826480U true CN203826480U (en) | 2014-09-10 |
Family
ID=51481947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420246337.6U Expired - Lifetime CN203826480U (en) | 2014-05-06 | 2014-05-06 | Extrusion coating die head for lithium ion batteries |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203826480U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106984499A (en) * | 2017-02-20 | 2017-07-28 | 江苏中兴派能电池有限公司 | Extrusion coated die pressure control device |
| CN109789357A (en) * | 2016-09-30 | 2019-05-21 | 日立金属株式会社 | Manufacture the method and device of ceramic honeycomb filter |
| WO2024011460A1 (en) * | 2022-07-13 | 2024-01-18 | 宁德时代新能源科技股份有限公司 | Pressing and coating apparatus, electrode sheet coater, and battery production system |
-
2014
- 2014-05-06 CN CN201420246337.6U patent/CN203826480U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109789357A (en) * | 2016-09-30 | 2019-05-21 | 日立金属株式会社 | Manufacture the method and device of ceramic honeycomb filter |
| CN106984499A (en) * | 2017-02-20 | 2017-07-28 | 江苏中兴派能电池有限公司 | Extrusion coated die pressure control device |
| WO2024011460A1 (en) * | 2022-07-13 | 2024-01-18 | 宁德时代新能源科技股份有限公司 | Pressing and coating apparatus, electrode sheet coater, and battery production system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20180428 Granted publication date: 20140910 |
|
| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20210428 Granted publication date: 20140910 |
|
| PD01 | Discharge of preservation of patent | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20210428 Granted publication date: 20140910 |
|
| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20240428 Granted publication date: 20140910 |