CN208422963U - A kind of secondary cell and encapsulating structure - Google Patents
A kind of secondary cell and encapsulating structure Download PDFInfo
- Publication number
- CN208422963U CN208422963U CN201721489300.6U CN201721489300U CN208422963U CN 208422963 U CN208422963 U CN 208422963U CN 201721489300 U CN201721489300 U CN 201721489300U CN 208422963 U CN208422963 U CN 208422963U
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- encapsulating
- battery
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- type shell
- film
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- 238000000034 method Methods 0.000 claims abstract description 24
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 238000005538 encapsulation Methods 0.000 claims description 16
- 230000007246 mechanism Effects 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 14
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 11
- 229910052782 aluminium Inorganic materials 0.000 abstract description 11
- 229910001416 lithium ion Inorganic materials 0.000 abstract description 11
- 229910052751 metal Inorganic materials 0.000 abstract description 11
- 239000002184 metal Substances 0.000 abstract description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 10
- 230000008901 benefit Effects 0.000 abstract description 9
- 239000004033 plastic Substances 0.000 abstract description 9
- 239000002985 plastic film Substances 0.000 abstract description 7
- 229920006255 plastic film Polymers 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000009466 transformation Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 11
- 150000001875 compounds Chemical class 0.000 description 8
- 238000004806 packaging method and process Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000002347 injection Methods 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000002604 ultrasonography Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 238000010146 3D printing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910000570 Cupronickel Inorganic materials 0.000 description 2
- PFYQFCKUASLJLL-UHFFFAOYSA-N [Co].[Ni].[Li] Chemical compound [Co].[Ni].[Li] PFYQFCKUASLJLL-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000012785 packaging film Substances 0.000 description 2
- 229920006280 packaging film Polymers 0.000 description 2
- 238000012536 packaging technology Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009459 flexible packaging Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- IAIWVQXQOWNYOU-FPYGCLRLSA-N nitrofural Chemical compound NC(=O)N\N=C\C1=CC=C([N+]([O-])=O)O1 IAIWVQXQOWNYOU-FPYGCLRLSA-N 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000004804 winding 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
-
- 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
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
Abstract
The utility model relates to a kind of secondary cell and encapsulating structure, the encapsulating structure is for accommodating battery, including frame-type shell, the first encapsulating film and the second encapsulating film；The frame-type shell, in the tubular structure of both ends open, and hollow setting；First encapsulating film is connected to the lower part of the frame-type shell, is used to support the battery；Second encapsulating film is connected to the top of the frame-type shell, for sealing the battery.Secondary cell encapsulating structure provided by the utility model takes into account the advantages of metal shell, plastic shell and aluminum plastic film encapsulating structure, and simple process, it is easy to carry out transformation and upgrade on current Process ba- sis, compatible existing lithium ion battery manufacture process and BMS management system other than with encapsulating related process.
Description
Technical field
The utility model relates to encapsulation technology field more particularly to a kind of secondary cells and encapsulating structure.
Background technique
In recent years, fast-developing electric car and energy storage industry are to using lithium ion battery, sodium-ion battery as representative
More stringent requirements are proposed for energy density, cost, cyclicity, reliability and the safety of secondary cell.It is with lithium ion battery
Example, conventional lithium ion battery mainly use metal shell, plastic shell, flexible packaging film shell, and three of the above shell has certainly
Oneself characteristic, superiority and inferiority and suitable application field, but advantage and disadvantage are all very prominent, so just foring current several forms
The situation that shell coexists.
The several types shell mechanism Pros and Cons of mainstream are analyzed as follows currently on the market:
1, metal shell: mainly there are the two kinds of material laser welding encapsulation of stainless steel and aluminium alloy, this type shell advantage: knot
Structure intensity is high, assembles convenient for assembled battery, for conventional lithium ion battery can rich partial electrolyte liquid, improve battery and follow
The ring service life；Such shell disadvantage: higher cost, heavier-weight, welding equipment higher cost.
2, plastic shell: main PP material envelope heat-sealing or ultrasound encapsulation, this type shell advantage: structural strength is high, just
Assembled in assembled battery, for conventional lithium ion battery can rich partial electrolyte liquid, improve battery cycle life；It is such
Shell disadvantage: higher cost, heavier-weight, battery radiating efficiency is low, and volume energy density is low.
3, aluminum plastic membrane shell: main aluminum plastic film heat-seal, this type shell advantage: structure is frivolous, and mass energy density is high,
Shape is random, generallys use hot sealing process, and equipment is relatively easy high-efficient；Such shell disadvantage: structural strength low edge is fragile
Damage, is limited to the universal cell thickness≤12mm of aluminum plastic film limit of stretch, structure design limitation is big, and assembled battery is at high cost.
Therefore, it is badly in need of a kind of the advantages of can not only taking into account metal shell, plastic shell and aluminum plastic film encapsulating structure at present,
And the encapsulating structure of simple process.
Summary of the invention
The purpose of this utility model is that aiming at the shortcomings in the prior art, providing a kind of secondary cell of brand new ideas
Encapsulating structure and its technique, the advantages of taking into account metal shell, plastic shell and aluminum plastic film encapsulating structure, and simple process.
To achieve the above object, in a first aspect, the utility model provides a kind of encapsulating structure of secondary cell, for receiving
Hold battery, the encapsulating structure includes frame-type shell, the first encapsulating film and the second encapsulating film；
The frame-type shell, in the tubular structure of both ends open, and hollow setting；
First encapsulating film is connected to the lower part of the frame-type shell, is used to support the battery；
Second encapsulating film is connected to the top of the frame-type shell, for sealing the battery.
Preferably, the frame-type shell with a thickness of 2-100mm.
Preferably, first encapsulating film and second encapsulating film with a thickness of 0.05-5mm.
Preferably, encapsulation fused layer is provided at the frame of the frame-type shell upper and lower surface.
Preferably, the frame-type shell includes subsidiary body needed for secondary cell.
Preferably, the frame-type shell is one of metal, high molecular material, composite material or a variety of.
Preferably, first encapsulating film and second encapsulating film are metal, high molecular material, one in composite material
Kind is a variety of.
Preferably, first encapsulating film and second encapsulating film are conductive material.
Second aspect, the utility model provide a kind of battery, including battery, further include envelope as described in relation to the first aspect
Assembling structure, the battery are contained in the encapsulating structure.
The emphasis of the utility model is the encapsulating structure of frame-type shell and both sides pad pasting, takes into account metal shell, plastic shell
The advantages of with aluminum plastic film encapsulating structure, and simple process, are easy to carry out transformation and upgrade on current Process ba- sis, in addition to encapsulation
Compatible existing lithium ion battery manufacture process and BMS management system outside related process.
Detailed description of the invention
Hereinafter, the embodiments of the present invention are described in detail in conjunction with attached drawing, in which:
Fig. 1 is battery assembling schematic diagram provided by the embodiment of the utility model；
Fig. 2 is a kind of packaging method for secondary battery flow diagram provided by the embodiment of the utility model；
Fig. 3 another packaging method for secondary battery flow diagram provided by the embodiment of the utility model.
Specific embodiment
Below by attached drawing and specific embodiment, the utility model is further detailed, it should be appreciated that
These embodiments, which are only used for being described in more detail, to be used, and but should not be understood as with the utility model is limited in any form, i.e.,
It is not intended to the limitation protection scope of the utility model.
This part carries out general description to the material and test method that arrive used in the utility model experiment.Though
So to realize that many materials and operating method used in the utility model aim are it is known in the art that still the utility model
Still it is described in detail as far as possible herein.It will be apparent to those skilled in the art that within a context, if not specified, this is practical
Novel material therefor and operating method are well known in the art.
Fig. 1 shows the battery assembling schematic diagram of utility model embodiment offer.It should be understood that attached drawing is not drawn to scale
, the example embodiment for being only used as the utility model is illustrated the encapsulating structure of secondary cell.
As shown in Figure 1, the encapsulating structure of the secondary cell of the embodiment, for accommodating battery 3, the encapsulating structure packet
Include frame-type shell 2, the first encapsulating film 1 and the second encapsulating film 4；
The frame-type shell 2, in the tubular structure of both ends open, and hollow setting；First encapsulating film 1 is connected to institute
The lower part for stating frame-type shell 2 is used to support the battery 3；Second encapsulating film 4 is connected to the upper of the frame-type shell 2
Portion, for sealing the battery 3.
In one example, frame-type shell 2, the first encapsulating film 1 and the second encapsulating film 4 be metal, it is high molecular material, compound
One of material is a variety of.Such as: PP, PE, PP/PE are compound, PP/PE/ nylon is compound, copper, nickel, aluminium, copper nickel plating, copper modeling are multiple
It closes, is plastic-aluminum combined, nickel modeling is compound, copper nickel plating modeling is compound.Its inside dimension is suitable with the size of battery 3 of design, it is preferable that
The frame-type shell 2 with a thickness of 2-100mm.First encapsulating film 1 and second encapsulating film 4 with a thickness of 0.05-
5mm.It should be pointed out that frame-type shell 2, the first encapsulating film 1 and the second encapsulating film 4 can be same material, or no
Same material.
In yet another example, frame-type shell 2 can pass through injection molding, forging, 3D printing, compound one or more processes
It realizes；Wherein, frame-type structure 2 also may include battery electrode column, anti-explosion mechanism required for battery, mechanism for filling liquid, secondary sealing machine
The subsidiary bodies such as structure, thermistor PTC.
It preferably, can be by process means such as injection molding, 3D printing, hot compound, ultrasonic, gluing, bolts outside the frame-type
Encapsulation fused layer is provided at the frame of 2 upper and lower surface of shell.
In another example, first encapsulating film 1 and second encapsulating film 4 are conductive material, can be used as battery
Positive and negative anodes output.
Battery 3 is put into a frame-type shell 2, on frame-type shell 2 by the secondary cell encapsulating structure in the present embodiment
The first encapsulating film 1 of lower two sides and the encapsulation of the second encapsulating film 4, frame-type shell 2 and the first encapsulating film 1 and the formation of the second encapsulating film 4
The shell of actual battery, in this way design have broken traditional flexible-packed battery since aluminum plastic film limit of stretch is to cell thickness
Limitation avoids the breakage of angle position, increases battery structure intensity, reduce encapsulation difficulty, volume effective rate of utilization improved, with traditional soft
Packet battery avoids stain corrosion from (avoiding packaging for the high-voltage battery of internal series-connection compared to edge sealing insulativity is improved
The risk of film short circuit breakdown), the advantages of taking into account metal shell, plastic shell and aluminum plastic membrane shell structure.
Fig. 2 shows packaging method for secondary battery flow diagrams provided by the embodiment of the utility model, as shown in Fig. 2,
The packaging method of secondary cell includes the following steps S210-S250, below by taking lithium ion battery as an example:
S210, the first encapsulating film is connect encapsulation with the one side of frame-type shell.
The pre- frame-type shell of first encapsulating film is attached encapsulation on one side, packaging technology can be to utilize glue sealing groove
Glue envelope, utilize the compound heat-sealing heat-sealing of fused layer, the ultrasound using ultrasound lines, the laser or structure curl using metal section
Encapsulation etc..
S220, battery is put into the frame-type shell of the packaged film of one side.
The process for preparing lithium battery is that stirring, coating, roll-in, pole piece cutting, baking pole piece, lamination or winding prepare electricity
Chi Xin toasts battery, removes moisture, i.e., the stand-by mode of early period is as the preparation method of lithium ion battery.So
The battery of preparation is put into afterwards in the frame-type shell of the packaged film of one side.
S230, the tab of battery or pole group are linked together with pole inner current collector body reserved in frame-type shell.
Such as be welded to connect, snap connection, if the stage be welding connect, can be used ultrasound or laser welding mode into
Row welding or other suitable welding manners, here without limitation.
S240, the another side of the second encapsulating film and frame-type shell is packaged.
The packaging technology in the stage is one kind described in step S10.
Compression shaping, and vacuum seal are carried out to packaged encapsulating structure after S250, baking, fluid injection, chemical conversion.
Specifically, subsequent baking, fluid injection, chemical conversion can be as current lithium ion battery preparation method, after the completion of chemical conversion
Vacuum seal while clamp pressing shaping, vacuum degree≤- 0.085Mpa guarantee that upper layer and lower layer packaging film and battery core are smooth tight
Patch.
Fig. 3 shows another packaging method for secondary battery flow diagram provided in an embodiment of the present invention, such as Fig. 3 institute
Show, the packaging method of secondary cell includes the following steps S310-S330, below by taking lithium ion battery as an example:
S310, the tab of battery or pole group are linked together with pole inner current collector body reserved in frame-type shell.
S320, the first encapsulating film and frame-type shell and the second encapsulating film and frame-type shell successively or are together encapsulated.
Compression shaping, and vacuum seal are carried out to packaged encapsulating structure after S330, baking, fluid injection, chemical conversion.
Each step specific operation process has been elaborated in step S210-S250, and details are not described herein.
Battery is packaged with encapsulating structure provided in this embodiment and its packaging method below, and to the electricity after encapsulation
Pond is tested for the property.
Embodiment 1
Nickel cobalt lithium aluminate (NCA)/oxidation Asia is prepared by stirring, coating, roll-in, pole piece cutting, baking pole piece, lamination
The composite negative pole battery core (specific capacity 500mAh/g) of silicon and graphite, N/P ratio are 1.08, nominal capacity 10Ah, average voltage
3.65V, battery core size are as follows: 6*85*110mm, after encapsulation, fluid injection within size 7*90*130mm, battery volume energy density >=
450Wh/L；Battery weight 165g or so, mass energy density >=220Wh/kg.
Embodiment 2
Nickel cobalt lithium aluminate (NCA)/oxidation Asia is prepared by stirring, coating, roll-in, pole piece cutting, baking pole piece, lamination
The composite negative pole battery core (specific capacity 500mAh/g) of silicon and graphite, N/P ratio are 1.08, nominal capacity 0.6Ah, average voltage
59.2V, battery core size are as follows: 6*85*110mm, after encapsulation, fluid injection within size 7*90*118mm, battery volume energy density >=
475Wh/L；Battery weight 155g or so, mass energy density >=230Wh/kg.
Although the utility model has been carried out a degree of description, it will be apparent that, in the spirit for not departing from the utility model
Under conditions of range, the appropriate variation of each condition can be carried out.It is appreciated that the utility model is not limited to the embodiment party
Case, and it is attributed to the scope of the claims comprising the equivalent replacement of each factor.
Above-described specific embodiment, to the purpose of this utility model, technical scheme and beneficial effects carried out into
One step is described in detail, it should be understood that being not used to limit the foregoing is merely specific embodiment of the present utility model
Determine the protection scope of the utility model, within the spirit and principle of the utility model, any modification for being made equally is replaced
It changes, improve, should be included within the scope of protection of this utility model.
Claims (7)
1. a kind of encapsulating structure of secondary cell, for accommodating battery, which is characterized in that the encapsulating structure includes outside frame-type
Shell, the first encapsulating film and the second encapsulating film；
The frame-type shell, in the tubular structure of both ends open, and hollow setting；
First encapsulating film is connected to the lower part of the frame-type shell, is used to support the battery；
Second encapsulating film is connected to the top of the frame-type shell, for sealing the battery.
2. encapsulating structure according to claim 1, which is characterized in that the frame-type shell with a thickness of 2-100mm.
3. encapsulating structure according to claim 1, which is characterized in that first encapsulating film and second encapsulating film
With a thickness of 0.05-5mm.
4. encapsulating structure according to claim 1, which is characterized in that be arranged at the frame of the frame-type shell upper and lower surface
There is encapsulation fused layer.
5. encapsulating structure according to claim 1, which is characterized in that the frame-type shell includes attached needed for secondary cell
Belong to mechanism.
6. encapsulating structure according to claim 1, which is characterized in that first encapsulating film and second encapsulating film are
Conductive material.
7. a kind of secondary cell, including battery, which is characterized in that further include encapsulation knot a method as claimed in any one of claims 1 to 5
Structure, the battery are contained in the encapsulating structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721489300.6U CN208422963U (en) | 2017-11-09 | 2017-11-09 | A kind of secondary cell and encapsulating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721489300.6U CN208422963U (en) | 2017-11-09 | 2017-11-09 | A kind of secondary cell and encapsulating structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208422963U true CN208422963U (en) | 2019-01-22 |
Family
ID=65127835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721489300.6U Active CN208422963U (en) | 2017-11-09 | 2017-11-09 | A kind of secondary cell and encapsulating structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208422963U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111370598A (en) * | 2020-03-13 | 2020-07-03 | 西南大学 | Automatic piezoelectric cell sealing machine |
-
2017
- 2017-11-09 CN CN201721489300.6U patent/CN208422963U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111370598A (en) * | 2020-03-13 | 2020-07-03 | 西南大学 | Automatic piezoelectric cell sealing machine |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200709 Address after: Room 215, building 218, Hongkou Road, Kunlun Street, Liyang City, Changzhou City, Jiangsu Province Patentee after: Jiangsu Weilan New Energy Battery Co., Ltd Address before: 100085, 32-1-1-565, building 32, Haidian District, Beijing Patentee before: BEIJING WELION NEW ENERGY TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right |