CN206878097U - Pole piece mends lithium device - Google Patents
Pole piece mends lithium device Download PDFInfo
- Publication number
- CN206878097U CN206878097U CN201720844067.2U CN201720844067U CN206878097U CN 206878097 U CN206878097 U CN 206878097U CN 201720844067 U CN201720844067 U CN 201720844067U CN 206878097 U CN206878097 U CN 206878097U
- Authority
- CN
- China
- Prior art keywords
- lithium
- pole piece
- film
- passage
- pressure roller
- 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.)
- Active
Links
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
Abstract
The utility model provides a kind of pole piece and mends lithium device, and it includes roller press mechanism, and roller press mechanism has the passage that pole piece and lithium film for lithium to be mended pass through.Passage includes first passage and is distributed in the second channel of first passage both sides；The width of first passage extension is less than the width of pole piece and the width of lithium film, pole piece and height of the thickness sum more than first passage of lithium film and the height less than second channel.The part that pole piece and lithium film pass through out of first passage can be by the pressure of roller press mechanism, and the part that pole piece and lithium film pass through out of second channel will not be by the pressure of roller press mechanism.Crackle can be formed between the lithium layer of lithium film part in compression and the not lithium layer of part in compression, so when the lithium layer of lithium film part in compression is peeled off from lithium film, the lithium layer of part in compression is not easy to drag by the edge of the lithium layer of lithium film part in compression and pole piece lithium film, suppress the generation of burr, lithium utilization rate is improved, reduces security risk.
Description
Technical field
Field of battery production is the utility model is related to, more particularly to a kind of pole piece mends lithium device.
Background technology
With the development of modern society, battery turns into the maximum bottleneck of electronic product.Battery energy can be improved by mending lithium technique
Metric density, avoid the irreversible capacitance loss during first charge-discharge due to battery.
Can be laminating in pole piece by lithium film by laminating benefit lithium technology, to supplement the active lithium of pole piece, ensure electricity
The capacity in pond.And in existing benefit lithium technology, the edge uniformity that equipment rolls the lithium film to be formed is poor, and edge has ripple
Unrestrained side and whard to control, and the uniformity of the center section of lithium film is preferable, therefore, in order to ensure to mend the uniformity of lithium, selects lithium
The center section of film carries out overlay film (that is, the width of lithium film is more than the width of pole piece)；But be attached to the lithium of pole piece from
When being peeled off on lithium film, the edge of pole piece easily drags lithium and forms substantial amounts of burr, and burr, which penetrates barrier film, to cause high pressure to survey
It is too low to try excellent rate, even results in battery catches fire, burr comes off also can form lithium simple substance in inside battery, to the security performance of battery
There is significant impact.
Utility model content
In view of problem present in background technology, the purpose of this utility model is that providing a kind of pole piece mends lithium device, its
The generation of burr can be suppressed, improve lithium utilization rate, reduce security risk.
To achieve these goals, the utility model provides a kind of pole piece and mends lithium device, and it includes roller press mechanism, roll-in
Mechanism has the passage that pole piece and lithium film for lithium to be mended pass through.Passage includes first passage and is distributed in first passage both sides
Second channel；The width of first passage extension is less than the width of pole piece and the width of lithium film, the thickness of pole piece and lithium film it
With the height more than first passage and less than the height of second channel.
The beneficial effects of the utility model are as follows：
In lithium device is mended according to pole piece of the present utility model, because the width of first passage extension is less than the width of pole piece
And the width of lithium film, therefore pole piece and lithium film only have center section to be passed through from first passage, and the both ends of pole piece and lithium film
Then extend in second channel.And because the thickness sum of pole piece and lithium film is more than the height of first passage and is less than second channel
Height, so the part that is passed through out of first passage of pole piece and lithium film can be by the pressure of roller press mechanism, and pole piece and lithium film
The part passed through out of second channel will not be by the pressure of roller press mechanism.The lithium layer of lithium film part in compression is under the effect of the pressure
It is attached on pole piece.After pole piece and lithium film pass from the passage of roller press mechanism, the lithium layer of lithium film part in compression is from lithium film
Peel off and be attached on pole piece., can shape between the lithium layer of lithium film part in compression and the not lithium layer of part in compression in nipping process
Into crackle, so when the lithium layer of lithium film part in compression is peeled off from lithium film, the lithium layer of lithium film not part in compression is not easy by lithium film
The lithium layer of part in compression and the edge of pole piece are dragged, and suppress the generation of burr, improve lithium utilization rate, reduce security risk.
Brief description of the drawings
Fig. 1 is the schematic diagram for the embodiment that lithium device is mended according to pole piece of the present utility model；
Fig. 2 is the sectional view that A-A makes along Fig. 1；
Fig. 3 is that Fig. 2 omits the schematic diagram after pole piece and lithium film；
Fig. 4 is the schematic diagram for another embodiment that lithium device is mended according to pole piece of the present utility model；
Fig. 5 is the sectional view that B-B makes along Fig. 4；
Fig. 6 is that Fig. 5 omits the schematic diagram after pole piece and lithium film；
Fig. 7 is another sectional view that B-B makes along Fig. 4；
Fig. 8 is that Fig. 7 omits the schematic diagram after pole piece and lithium film；
Fig. 9 is the another sectional view that B-B makes along Fig. 4；
Figure 10 is another sectional view that B-B makes along Fig. 4；
Figure 11 is the schematic diagram for the another embodiment that lithium device is mended according to pole piece of the present utility model；
Figure 12 is the schematic diagram that the lithium film that lithium device uses is mended according to pole piece of the present utility model；
Figure 13 is the schematic diagram of pole piece and lithium film after roll-in.
Wherein, description of reference numerals is as follows：
The Li Mo retractable volumes mechanism of 1 roller press mechanism 3
The lithium film let off roll of 11 first pressure roller 31
The lithium film wind-up roll of 111 first base portion 32
112 first convex portion P pole pieces
12 second pressure roller L lithium films
121 second base portion L1 lithium layer
122 second convex portion L2 barrier films
13 auxiliary film C-channels
14 auxiliary film let off roll C1 first passages
15 auxiliary film wind-up roll C2 second channels
2 pole piece retractable volume mechanism W widths
21 pole piece let off roll H short transverses
22 pole piece wind-up rolls
Embodiment
With reference to the accompanying drawings lithium device is mended to describe pole piece of the present utility model in detail.
Referring to figs. 1 to Figure 13, mending lithium device according to pole piece of the present utility model includes roller press mechanism 1, and roller press mechanism 1 has
The channel C that pole piece P and lithium film L for lithium to be mended are passed through.Channel C includes first passage C1 and is distributed in first passage C1 both sides
Second channel C2；Width of the width less than pole piece P of first passage C1 extensions and lithium film L width, pole piece P and lithium film L
Thickness sum more than first passage C1 height and less than second channel C2 height.
Reference picture 12, lithium film L generally include barrier film L2 and are arranged on the lithium layer L1 on barrier film L2 surfaces, the benefit lithium work of pole piece
Skill is by the laminating surfaces to pole piece P of lithium film L lithium layer L1.
When pole piece of the present utility model, which mends lithium device, carries out benefit lithium to pole piece P, traction pole piece P and lithium film L passes through roll-in
The first passage C1 of mechanism 1, and pole piece P is relative with lithium film L lithium layer L1.
In lithium device is mended according to pole piece of the present utility model, because the width of first passage C1 extensions is (i.e. along width side
The length extended to W) width less than pole piece P and lithium film L width, therefore pole piece P and lithium film L only have center section from the
Passed through in one channel C 1, and pole piece P and lithium film L both ends are then extended in second channel C2.And due to pole piece P's and lithium film L
Height (length that along short transverse H extends) of the thickness sum more than first passage C1 and the height less than second channel C2,
So the part that is passed through out of first passage C1 of pole piece P and lithium film L can be by the pressure of roller press mechanism 1, and pole piece P and lithium film L
The part passed through out of second channel C2 will not be by the pressure of roller press mechanism 1.The lithium layer L1 of lithium film L part in compression is in pressure
It is attached under effect on pole piece P.Reference picture 13, after pole piece P and lithium film L passes from the channel C of roller press mechanism 1, lithium film L by
The lithium layer L1 of laminate section is peeled off and is attached on pole piece P from lithium film L.
In nipping process, crackle can be formed between the lithium layer L1 of lithium film L part in compression and not the lithium layer L1 of part in compression,
So when the lithium layer L1 of lithium film L part in compression peels off from lithium film L, the lithium layer L1 of lithium film L not part in compression is not easy by lithium film L
The lithium layer L1 and pole piece P of part in compression edge are dragged, and suppress the generation of burr, improve lithium utilization rate, reduce security risk.
In addition, lithium layer L1 peeled off from barrier film L2 required off-type force less than lithium layer L1 is peeled off from pole piece P it is required from
Type power, so the lithium layer L1 of lithium film L part in compression is peeled off and is attached on pole piece P from lithium film L.To ensure to mend the consistent of lithium
Property, lithium layer L1 width is more than pole piece P width.
In lithium device is mended according to pole piece of the present utility model, reference picture 1, Fig. 4 and Figure 11, the pole piece mend lithium device also
Including：Pole piece retractable volume mechanism 2, for setting the pole piece P of lithium to be mended, and draw the channel C that pole piece P passes through roller press mechanism 1；Lithium
Film retractable volume mechanism 3, for setting lithium film L, and draw the channel C that lithium film L passes through roller press mechanism 1.Specifically, pole piece retractable volume
Mechanism 2 includes pole piece let off roll 21 and pole piece wind-up roll 22；Li Mo retractable volumes mechanism 3 includes lithium film let off roll 31 and lithium film is wound
Roller 32.When needing to mend lithium to pole piece P, by pole piece P on pole piece let off roll 21, and the free end for drawing pole piece P passes through
The channel C of roller press mechanism 1 is simultaneously fixed to pole piece wind-up roll 22, and pole piece wind-up roll 22 winds and draws pole piece P motions；Meanwhile will
Lithium film L is wound on lithium film let off roll 31, and the free end for drawing lithium film L passes through the channel C of roller press mechanism 1 and received fixed to lithium film
On winding up roller 32, lithium film wind-up roll 32 winds and draws lithium film L motions.
In lithium device is mended according to pole piece of the present utility model, lithium film retractable volume machine is set according to pole piece P benefit lithium amount
Structure 3.In one embodiment, reference picture 11, Li Mo retractable volumes mechanism 3 are one group, specifically, the conveying of Li Mo retractable volumes mechanism 3 one
Lithium film L is opened, pole piece of the present utility model mends lithium device and mends lithium on a pole piece P surface.In another embodiment, reference picture
1 and Fig. 4, Li Mo retractable volume mechanism 3 be two groups, specifically, Liang Zulimo retractable volumes mechanism 3 convey two lithium film L, two lithium films
L is relative with pole piece P two surfaces respectively, so as to mend lithium on pole piece P two surfaces.
In lithium device is mended according to pole piece of the present utility model, first passage C1 width is smaller 1mm than pole piece P width~
10mm.Preferably, first passage C1 width is smaller 4mm than pole piece P width.
Specifically, in an embodiment of lithium device is mended according to pole piece of the present utility model, reference picture 4 to Figure 10, roll-in
Mechanism 1 includes the first pressure roller 11 and the second pressure roller 12 being oppositely arranged；First pressure roller 11 have the first base portion 111 and relative to
First convex portion 112 of the first base portion 111 protrusion, and formation first passage C1 between the first convex portion 112 and the second pressure roller 12, first
Second channel C2 is formed between the pressure roller 12 of base portion 111 and second.
First convex portion 112 width that W extends in the width direction is identical with first passage C1 width, therefore, the first convex portion
112 and the second gap between pressure roller 12 be exactly roller press mechanism 1 first passage C1, the first base portion 111 and the second pressure roller 12 it
Between gap be exactly second channel C2.Because the first convex portion 112 is protruded relative to the first base portion 111, so first passage C1
Height is also less than second channel C2 height.
The pole piece is mended lithium device and may also include：Drive mechanism, it is connected with the first pressure roller 11.Drive mechanism can drive
One pressure roller 11, to adjust first passage C1 and second channel C2 height as needed, ensures closer or far from the second pressure roller 12
Height of pole piece P and lithium film L the thickness sum more than first passage C1 and the height less than second channel C2.
Wherein, the first convex portion 112 can be cylinder, and the first base portion 111 can be round platform；That is, the first base portion 111 is straight
Footpath progressively reduces in the width direction, so as to form highly different first passage C1 and second channel C2.Or reference picture 5 to
Fig. 9, the first convex portion 112 and the first base portion 111 are cylinder, and the diameter of the first convex portion 112 is more than the straight of the first base portion 111
Footpath.
Reference picture 5 and Fig. 6, the second pressure roller 12 are isometrical cylinder.Or reference picture 7 to Fig. 9, the second pressure roller 12 can have
There are the second base portion 121 and the second convex portion 122 protruded relative to the second base portion 121, and the position of the second convex portion 122 and width
It is corresponding with the first convex portion 112.That is, the gap between the first convex portion 112 and the second convex portion 122 is exactly first passage C1,
Gap between first base portion 111 and the second base portion 121 is exactly second channel C1.
Wherein, reference picture 9, the second convex portion 122 are cylinder, and the second base portion 121 is round platform；Or reference picture 7 and Fig. 8, the
Two convex portions 122 and the second base portion 121 are cylinder, and the diameter of the second convex portion 122 is more than the diameter of the second base portion 121.
In an embodiment of lithium device is mended according to pole piece of the present utility model, referring to figs. 1 to Fig. 3, roller press mechanism 1 is wrapped
Include：First pressure roller 11；Second pressure roller 12, it is oppositely arranged with the first pressure roller 11；And auxiliary film 13, from the first pressure roller 11 and second
Passed through between pressure roller 12 and be attached at the first pressure roller 11, wherein, first passage C1 is formed between the pressure roller 12 of auxiliary film 13 and second,
First pressure roller 11 forms second channel C2 between the part of the both sides of auxiliary film 13 and the second pressure roller 12.
Generally, the gap between the first pressure roller 11 and the second pressure roller 12 is constant, reference picture 3, when auxiliary film 13 is from
After being passed through between one pressure roller 11 and the second pressure roller 12, the gap between the pressure roller 12 of auxiliary film 13 and second is exactly first passage C1,
And positioned at first passage C1 in the width direction W both sides for second channel C2.
The width of auxiliary film 13 is first passage C1 width, and therefore, the width of auxiliary film 13 can be according to lithium to be mended
Depending on the width for the lithium layer L that pole piece P width and needs adds on pole piece P.
Further, roller press mechanism 1 also includes auxiliary film let off roll 14 and auxiliary film wind-up roll 15.When needing to pole piece P
When mending lithium, by auxiliary film 13 wound on auxiliary film let off roll 14, and free end the leading to through roller press mechanism 1 of auxiliary film 13 is drawn
Road C is simultaneously fixed on auxiliary film wind-up roll 15, and auxiliary film wind-up roll 15 winds and draws auxiliary film 13 and moves.
The pole piece is mended lithium device and may also include：Drive mechanism, it is connected with the first pressure roller 11.Drive mechanism can drive
One pressure roller 11, to adjust first passage C1 and second channel C2 height as needed, ensures closer or far from the second pressure roller 12
Height of pole piece P and lithium film L the thickness sum more than first passage C1 and the height less than second channel C2.
In the another embodiment of lithium device is mended according to pole piece of the present utility model, reference picture 10, roller press mechanism 1 includes phase
To the first pressure roller 11 and the second pressure roller 12 of setting.Wherein, the first pressure roller 11 in the width direction W width be less than pole piece P width
The width of degree and lithium film L.Gap between first pressure roller 11 and the second pressure roller 12 is exactly first passage C1, and pole piece P and lithium
Film L both ends are extended to outside the first pressure roller 11.
Claims (10)
1. a kind of pole piece mends lithium device, including roller press mechanism (1)；
Characterized in that,
Roller press mechanism (1) has the passage (C) that pole piece (P) and lithium film (L) for lithium to be mended pass through；
Passage (C) includes first passage (C1) and is distributed in the second channel (C2) of first passage (C1) both sides；
The width of first passage (C1) extension is less than the width of pole piece (P) and the width of lithium film (L), pole piece (P) and lithium film (L)
Thickness sum be more than first passage (C1) height and less than second channel (C2) height.
2. pole piece according to claim 1 mends lithium device, it is characterised in that the pole piece, which mends lithium device, also to be included：
Pole piece retractable volume mechanism (2), for setting the pole piece (P) of lithium to be mended, and pole piece (P) is drawn through roller press mechanism (1)
Passage (C)；
Li Mo retractable volumes mechanism (3), for setting lithium film (L), and draw the passage (C) that lithium film (L) passes through roller press mechanism (1).
3. pole piece according to claim 2 mends lithium device, it is characterised in that
Pole piece retractable volume mechanism (2) includes pole piece let off roll (21) and pole piece wind-up roll (22)；
Li Mo retractable volumes mechanism (3) includes lithium film let off roll (31) and lithium film wind-up roll (32).
4. pole piece according to claim 2 mends lithium device, it is characterised in that Li Mo retractable volumes mechanism (3) is one group or two
Group.
5. lithium device is mended according to pole piece according to any one of claims 1 to 4, it is characterised in that
Roller press mechanism (1) includes the first pressure roller (11) and the second pressure roller (12) being oppositely arranged；
First pressure roller (11) has the first base portion (111) and the first convex portion (112) protruded relative to the first base portion (111),
And first forms first passage (C1), the first base portion (111) and the second pressure roller (12) between convex portion (112) and the second pressure roller (12)
Between formed second channel (C2).
6. pole piece according to claim 5 mends lithium device, it is characterised in that
First convex portion (112) is cylinder, and the first base portion (111) is round platform；Or
First convex portion (112) and the first base portion (111) are cylinder, and the diameter of the first convex portion (112) is more than the first base portion
(111) diameter.
7. pole piece according to claim 5 mends lithium device, it is characterised in that the second pressure roller (12) has the second base portion
(121) the second convex portion (122) and relative to the second base portion (121) protruded, and the position of the second convex portion (122) and width with
First convex portion (112) is corresponding.
8. pole piece according to claim 7 mends lithium device, it is characterised in that
Second convex portion (122) is cylinder, and the second base portion (121) is round platform；Or
Second convex portion (122) and the second base portion (121) are cylinder, and the diameter of the second convex portion (122) is more than the second base portion
(121) diameter.
9. lithium device is mended according to pole piece according to any one of claims 1 to 4, it is characterised in that roller press mechanism (1) includes：
First pressure roller (11)；
Second pressure roller (12), it is oppositely arranged with the first pressure roller (11)；And
Auxiliary film (13), passed through between the first pressure roller (11) and the second pressure roller (12) and be attached at the first pressure roller (11), wherein,
First passage (C1) is formed between auxiliary film (13) and the second pressure roller (12), the first pressure roller (11) is located at auxiliary film (13) both sides
Part and the second pressure roller (12) between formed second channel (C2).
10. pole piece according to claim 9 mends lithium device, it is characterised in that roller press mechanism (1) also unreels including auxiliary film
Roller (14) and auxiliary film wind-up roll (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720844067.2U CN206878097U (en) | 2017-07-12 | 2017-07-12 | Pole piece mends lithium device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720844067.2U CN206878097U (en) | 2017-07-12 | 2017-07-12 | Pole piece mends lithium device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206878097U true CN206878097U (en) | 2018-01-12 |
Family
ID=61330435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720844067.2U Active CN206878097U (en) | 2017-07-12 | 2017-07-12 | Pole piece mends lithium device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206878097U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108615846A (en) * | 2018-05-10 | 2018-10-02 | 上海乾得智能科技有限公司 | A kind of power battery lithium film set composite and method |
| CN110176574A (en) * | 2019-06-14 | 2019-08-27 | 合肥国轩高科动力能源有限公司 | A kind of pre- lithium method of lithium ion battery negative electrode |
| CN112186133A (en) * | 2019-07-05 | 2021-01-05 | 宁德时代新能源科技股份有限公司 | Device for lithium supplement of pole piece |
| WO2023029437A1 (en) * | 2021-09-06 | 2023-03-09 | 苏州清陶新能源科技有限公司 | Lithium replenishment method for negative electrode plate, and device |
-
2017
- 2017-07-12 CN CN201720844067.2U patent/CN206878097U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108615846A (en) * | 2018-05-10 | 2018-10-02 | 上海乾得智能科技有限公司 | A kind of power battery lithium film set composite and method |
| CN110176574A (en) * | 2019-06-14 | 2019-08-27 | 合肥国轩高科动力能源有限公司 | A kind of pre- lithium method of lithium ion battery negative electrode |
| CN110176574B (en) * | 2019-06-14 | 2021-09-10 | 合肥国轩高科动力能源有限公司 | Lithium pre-preparing method for lithium ion battery negative pole piece |
| CN112186133A (en) * | 2019-07-05 | 2021-01-05 | 宁德时代新能源科技股份有限公司 | Device for lithium supplement of pole piece |
| WO2023029437A1 (en) * | 2021-09-06 | 2023-03-09 | 苏州清陶新能源科技有限公司 | Lithium replenishment method for negative electrode plate, and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206878097U (en) | Pole piece mends lithium device | |
| CN207038628U (en) | Pole piece mends lithium device | |
| CN208352428U (en) | A kind of pole piece rolling device | |
| CN106025367B (en) | Calendering tectorial membrane mends lithium all-in-one | |
| CN102569731B (en) | Coating, rolling and slitting integrated machine for pole piece | |
| CN206022517U (en) | A kind of winding type lithium battery pole piece of anti-lug fold | |
| CN102198437A (en) | Device for manufacturing lithium ion secondary battery pole piece and manufacturing method thereof | |
| CN204451441U (en) | A kind of corrugated core clad aluminium automatic producing device | |
| CN209001015U (en) | A kind of equal elongations roller press mechanism of battery pole piece | |
| CN206406557U (en) | A kind of graphene heat conducting film film sticking equipment | |
| CN203300740U (en) | Coating and rolling equipment of lithium ion battery pole piece and coating and rolling direct connection device of lithium ion battery pole piece | |
| CN206813391U (en) | A kind of overlay film cutting integrated machine for touch-screen processing | |
| CN203218371U (en) | Battery pole piece winding roller | |
| CN205022136U (en) | Membrane composite non -woven fabric's device is drenched to workable multilayer | |
| CN203919930U (en) | A kind of Novel film laminating machine | |
| CN207883483U (en) | A kind of magnetic flakes based on amorphous or nanocrystalline strip | |
| CN103367701A (en) | Lithium ion battery positive electrode sheet and battery comprising positive electrode sheet | |
| CN206921920U (en) | A kind of air-flotation type roll forming machine | |
| CN107482151B (en) | Extraction and film penetrating method for lithium battery diaphragm | |
| CN202651265U (en) | Guide device for preventing battery electrode pieces from creasing | |
| CN206454847U (en) | Wrinkle resistant barrier film coating equipment | |
| CN209947983U (en) | Torsion auxiliary feeding mechanism for winding lithium battery cell | |
| CN204714163U (en) | A kind of joint paper apparatus be installed on compounding machine | |
| CN206558340U (en) | A kind of transformer foil-type rectangle winding copper bar stretching structure | |
| CN207265159U (en) | A kind of multisection type polymer battery cathode chip architecture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |