CN108923070A - A kind of packaging method and its device of lithium ion battery - Google Patents
A kind of packaging method and its device of lithium ion battery Download PDFInfo
- Publication number
- CN108923070A CN108923070A CN201810603276.7A CN201810603276A CN108923070A CN 108923070 A CN108923070 A CN 108923070A CN 201810603276 A CN201810603276 A CN 201810603276A CN 108923070 A CN108923070 A CN 108923070A
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- sealing
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- lithium ion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
-
- 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
Abstract
The invention discloses a kind of packaging method of lithium ion battery and its devices, it is characterised in that：Provide the packaging method and device that a kind of first heating encapsulation of lithium ion battery cools down rapidly again, the device includes heat-sealing unit, transmission structure, cold seal unit, wherein the heat-sealing unit carries out heating encapsulation to battery core, is transferred to cold seal unit through transmission structure, then carries out cooling package.Present invention reduces the regulating times for being heat sealed to cold seal, avoid resource and waste of time, improve production efficiency.The present invention can effectively inhibit the flatulence of lithium ion battery, extend the holding time of battery, greatly improve the cycle life and safety of lithium ion battery.
Description
Technical field
The present invention relates to the packaging methods and its device in secondary cell field, more particularly to a kind of lithium ion battery.
Background technique
Lithium ion battery has that energy storage is big, light-weight, power is big, the service life is long, pollution-free and Acclimation temperature range is wide etc. solely
Special advantage is widely used in the fields such as energy storage and electric car, is the major products of Future New Energy Source development.
Since flatulence easily occurs in charge and discharge and storing process for lithium ion battery, and lithium ion battery in the prior art
Shell easily deforms, and outside gassing significantly reduces the cycle life of lithium ion battery, affects the items of lithium ion battery
Performance.Especially soft-package battery aluminum plastic film sealing part easily occurs poorly sealed, and flatulence occurs for battery water suction, and sealing part cannot support
, there is the problems such as leakage in anti-internal pressure.The device of current existing aluminum-plastic membrane used for packaging only has heat sealing functions, but heat-sealing does not live, and seals
Blow-by；It will be sealed again again after packaging cooling after needing to wait for its cooling after heat-sealing, waste time, seriously reduce production efficiency, and
Movement will affect package quality, have an effect on the circulation and safety of battery.Therefore it provides a kind of encapsulation of new type lithium ion battery
Device can be effectively improved status, have a very important significance.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides the packaging methods and its dress of a kind of novel lithium ion battery
It sets, to solve the problems, such as to mention in above-mentioned background technique, it is characterised in that：Provide a kind of first heating encapsulation of lithium ion battery
The packaging method and device cooled down rapidly again, the device include heat-sealing unit, transmission structure, cold seal unit.The wherein heat
Envelope unit can carry out heating encapsulation to battery core, be transferred to cold seal unit through transmission structure, then carry out cooling package.
Further, it is characterised in that：Rapid cooling package again first is encapsulated to battery heating, wherein the heating encapsulation
Temperature is 80 to 200 DEG C, packaging time 1s-4s, and cooling package temperature is -10 DEG C to 30 DEG C, packaging time 1s-3s, institute
The time interval of the heating encapsulation and cooling package stated is 2s to 5s.
Further, it is characterised in that：The heat-sealing unit is single by pneumatic mechanism, strip of paper used for sealing unit, temperature unit, time
Member composition.The pneumatic mechanism is made of adjusting knob and cylinder.The strip of paper used for sealing unit is made of upper and lower strip of paper used for sealing, top heating
Strip of paper used for sealing and lower part heat seal have been equipped with sensor and heater, can adjust temperature by each respective thermoregulator,
The silicon rubber that lower seal item uses balances air-proof condition by cushion seal pressure to a certain extent.The temperature list
Member heats sealing strip up and down and possesses temperature digital display adjuster.The time quantum, Sealing period are controlled by time regulator,
It can arbitrarily be adjusted between 0.1sec~9990h by +/- button.The heat-sealing unit can automatic mode and manual mode control
System, when using automatic mode, the decline of upper sealing strip is controlled by brake service, and Sealing period is controlled by the time on time regulator
System.When using manual mode, the decline of upper sealing strip is controlled by brake service, and Sealing period steps on the time of brake service by foot to control
System.Further, it is characterised in that：.
Further, it is characterised in that：The cold seal unit is by pneumatic mechanism, strip of paper used for sealing unit, time quantum, cooling list
Member composition.The pneumatic mechanism is made of adjusting knob and cylinder.The strip of paper used for sealing unit is made of upper and lower strip of paper used for sealing, in the envelope
The two sides of unit connect cooling unit.The cold wind unit includes Cryogenic air cooler and consolidates on strip of paper used for sealing unit respectively
Two fixed cool air hoses straight up.The time quantum, Sealing period are controlled by time regulator, can be by +/-
Button is arbitrarily adjusted between 0.1sec~9990h.The cold seal unit can automatic mode and manual mode control, using automatic
When mode, the decline of upper sealing strip is controlled by brake service, and Sealing period is controlled by the time on time regulator.Using manual mould
When formula, the decline of upper sealing strip is controlled by brake service, and Sealing period steps on the time of brake service by foot to control.
Traditional cell package needs to waste many times by the way of natural cooling, and heat-sealing temperature is higher to behaviour
It may cause the harm such as scald as personnel.Moreover, researcher recognizes if not cold rapidly with the development of battery industry
But, in heat seal process, temperature is increased, and binder softens, and the adhesive property of binder reduces, it is easier that aluminum plastic film hot sealing layer it
Between and hot sealing layer separated with aluminium foil layer, electrolyte further corrodes, and then seriously affects the package quality of battery, especially lithium from
Producing gas under sub- battery charging and discharging circulation and High temperature storage shortens the holding time.Meanwhile if encapsulation is not close, battery can lead to
The moisture in micropore absorption environment is crossed, causes lithium ion battery flatulence serious.It cools down rapidly after heat-sealing and is produced compared with natural cooling battery
Product sealing part flatness is more preferable, also improves the quality and battery performance of lithium ion battery product.
Further, it is characterised in that：The transmission structure is turntable, and turntable includes a pallet, has clamping on pallet
Device, for fixing battery.The turntable can rotate automatically, two sides battery storing device, have battery limiting, two sides have
Spring chuck corresponds on pallet and is equipped with gas vent at battery bottom.The clamping device includes for limiting battery as left and right
First limiting device of position and the second limiting device of limitation battery front-rear position.Wherein, the first limiting device includes a pair
There is the trend of moving toward one another, opposite direction arrangement fixture block under elastic reaction.Battery is clamped by spring chuck, guarantees rotary course
The position of middle battery maintains to remain unchanged.Package position is most important to the package quality of battery, and one side package area is small, nothing
Method guarantees package quality；Another aspect package area is big, it is understood that there may be the problems such as being heat-shrinked such as diaphragm influences the safety of battery
And yield rate.The setting of spring chuck can also provide elastic buffer effect, and expanding application range of the invention (can be used for
The lithium ion battery of fixed different-thickness), but also the aluminum plastic film of battery surface will not be caused to damage.The exhaust of battery bottom
Play the role of ventilation and heat in hole.
Further, it is characterised in that：The periphery of the spring chuck is provided with positioning hasp, and the positioning hasp
One end be fixed on the rotary base.
In addition, flexible and convenient turntable is used between cold seal due to sealing when being packaged using the present invention, therefore battery
The original heat-sealing device of factory is without buying, and directly addition turntable and cold wind unit can simple realization excellent results of the invention.
The present invention has substantive features and progress compared with the prior art, specifically, first adding the present invention provides a kind of
Heat-seal rapid cooling packaging method and its device again, this method is accurately easy, shortens the regulating time for being heat sealed to cold seal, keeps away
Exempt from resource and waste of time, improves production efficiency.The apparatus structure is simple, it is easy to accomplish.Sealing part can effectively increase electricity
The intensity of internal pressure is resisted in pond, and the battery after encapsulation has the effects that high temperature resistant, moisture-proof, waterproof, can effectively inhibit lithium ion
The flatulence of battery extends the holding time of battery, greatlys improve the cycle life and safety of lithium ion battery.In short, this
The packaging method provided is provided and device improves the safety of cell package and package quality, extends the pot-life, is improved
Packaging efficiency, reduces production cost, moreover it is possible to improve the competitive advantage in market.
Detailed description of the invention
Each exemplary embodiment is described in detail by referring to accompanying drawing, above and other feature and advantage are common for this field
It will become more apparent for technical staff, in the accompanying drawings:
The general structure schematic diagram of Fig. 1 apparatus of the present invention.
The positive structure diagram of the heat-sealing unit of Fig. 2 apparatus of the present invention.
The side structure schematic view of the heat-sealing unit of Fig. 3 apparatus of the present invention.
The positive structure diagram of the cold seal unit of Fig. 4 apparatus of the present invention.
The side structure schematic view of the cold seal unit of Fig. 5 apparatus of the present invention.
Fig. 6 turntable top view of the present invention.
Fig. 7 is station top view of the present invention.
Fig. 8 is station partial sectional view of the present invention.
Fig. 9 is another partial sectional view of station of the present invention.
Specific embodiment
In order to keep technical solution of the present invention and advantage clearer, in the following with reference to the drawings and specific embodiments to the present invention
It is described in detail.
Embodiment 1
Referring to Fig. 1, the present invention provides a kind of first heating encapsulation of lithium ion battery again rapidly cooling packaging method and
Device, the device include heat-sealing unit 1, turntable 2, cold seal unit 3.Wherein the heat-sealing unit 1 can heat battery core
Encapsulation, the cold seal unit 3 can carry out cooling package to battery core, and the battery core is mountable on the turntable 2, and passes through rotation
So that battery core acts between the positions such as hot air unit 1, cooling unit 2.
Wherein, the heating package temperature be 80 to 200 DEG C, packaging time 1s-4s, cooling package temperature be -10
DEG C to 30 DEG C, packaging time 1s-3s, the time interval of the heating encapsulation and cooling package is 2s to 5s.
Wherein, the heat-sealing unit includes the first pneumatic mechanism, the first strip of paper used for sealing unit, temperature unit, time quantum.Institute
The first pneumatic mechanism stated includes adjusting knob and cylinder 7.The first strip of paper used for sealing unit includes that top heat seal and lower part add
Item is sealed, top heat seal 8 and lower part heat seal 9 have been equipped with sensor and heater, can pass through each respective temperature
It spends adjuster and adjusts temperature, the silicon rubber that lower part heat seal uses is balanced close to a certain extent by cushion seal pressure
Strip of paper used for sealing part.The temperature unit heats sealing strip up and down and possesses temperature digital display adjuster.The time quantum, when sealing
Between controlled by time regulator, can arbitrarily be adjusted between 0.1sec~9990h by +/- button.The heat-sealing unit can
Automatic mode and manual mode control, when using automatic mode, the decline of upper sealing strip is controlled by brake service, Sealing period by when
Between time control on adjuster.When using manual mode, the decline of upper sealing strip is controlled by brake service, and Sealing period is stepped on by foot
The time of brake service controls.
The cold seal unit includes the second pneumatic mechanism, the second strip of paper used for sealing unit, the second time quantum, cooling unit.Institute
The second pneumatic mechanism stated includes adjusting knob and cylinder 12.The second strip of paper used for sealing unit includes the cooling strip of paper used for sealing 10 in top and lower part
Cooling strip of paper used for sealing 11 connects cooling unit in the two sides of the second strip of paper used for sealing unit.The cold wind unit includes that Cryogenic air is cold
But device 13 and two cool air hoses straight up fixed on strip of paper used for sealing unit respectively.Second time quantum, when sealing
Between controlled by time regulator, can arbitrarily be adjusted between 0.1sec~9990h by +/- button.The cold seal unit can
Automatic mode and manual mode control, when using automatic mode, the decline of the cooling strip of paper used for sealing in top is controlled by brake service, Sealing period
By the time control on time regulator.When using manual mode, the decline of upper close cooling strip of paper used for sealing is controlled by brake service, when sealing
Between the time of brake service stepped on to control by foot.
The turntable includes support, shaft and pallet 6, and wherein pallet 6 can manually or automatically rotate, and is arranged on pallet 6
There is the station of placing battery, wherein have at station to the first limiting device 4 positioned at left and right sides of battery and front and back
To the second limiting device 5 of limit.
Preferably, shown first limiting device 4 includes spring chuck comprising a pair moves toward one another under elastic reaction
The fixture block of trend, opposite arrangement is (for example, logical by tension spring connection or at least one fixture block between the pair of fixture block
It crosses the compression spring being fixed on pallet 6 and generates power to another fixture block).Battery is clamped by spring chuck, that is, can guarantee rotation
The position of battery maintains to remain unchanged during turning, and can provide elastic buffer effect, but also will not be to the aluminium of battery surface
Plastic film causes to damage.
Preferably, the periphery of the fixture block of the spring chuck is provided with positioning hasp, and one end of the positioning hasp
It is fixed on the pallet 6.It is highly preferred that the fixture block periphery is provided with sliding axle, sliding rail, institute are provided on pallet 6
Stating sliding axle can slide in sliding rail so that fixture block can opposing tray 6 it is mobile and do not fall out except pallet 6.
Preferably, battery corresponds to and is equipped with venthole at bottom on pallet 6, can be preferably to the battery in transmission engineering
It radiates.,.
Although scheme is described with turntable structure above, it is understood that the heat-sealing unit 1 and cold seal list
The transmission that can realize battery between member 3 using other transmission structures 2, for example, conveyer belt etc..
Embodiment 2
Referring to Fig. 7-9, the support holder structure of the embodiment of the present invention 2 is shown, wherein the pallet 6 is formed at station
Groove (groove can through pallet and also not through), first limiting device, the second limiting device are respectively provided with
In groove, first limiting device includes left side limited block 41 and right side limited block 42, and each limit block main body is substantially
The upper surface of trapezium structure and stepped part 412/422 in trapezoidal top, the limited block slopes inwardly, left side limited block 41
By being fixedly connected on the left of helicitic texture 413 and bracket, pass through the adjustable left side limited block 41 of the helicitic texture 413
Horizontal position, the helicitic texture can be bolt, it is however preferred to have the bolt of certain elasticity.The right side limited block 42 is logical
It crosses elastomeric element 423 (such as spring) to connect with pallet 6, the right side limited block 42 passes through the elasticity that elastomeric element 423 applies
Power clamps the left and right sides of battery with left side limited block 41 together.Referring to Fig. 7, the two sides of each limited block 41/42, which have, to be slided
Limited block is located in the sliding rail 64 formed on pallet 6, so that sliding block can be put down in the horizontal direction by moving axis 414/424 by it
It is steady to move and do not deviate from pallet 6.Second limiting device 5 includes upside limited block 51, and specific structure and connection type can
It is identical with left side limited block 41 or right side limited block 52, it repeats no more.
When battery is packed into, the inclined-plane of three limited block top surfaces can guide battery accurately to enter position, and when battery is downward
When mobile, limited block 41 upside limited block 51 in left side can accurately limit the position of battery, and right side limited block 42 slowly moves to the right,
So that battery slips over inclined-plane, the plane that the stepped part of three limited blocks is formed is navigated to, and pass through the elasticity of right side limited block 42
Power clamps it, realizes the accurate positionin and clamping of battery.
Corresponding to various sizes of battery, in a certain range, the limiting device in the presence of a tensile force can be adaptive
It should adjust.Battery biggish for size difference, can be by adjusting the screw thread knot of left side limited block 41 and upside limited block 51
Structure and/or the length or pre-pressing degree for adjusting elastomeric element, and then change the distance between limited block to adapt to.
Embodiment 3：
Illustrate that the structure of the embodiment of the present invention 3, embodiment 3 are being wanted mainly for battery in 2 is implemented continuing with attached drawing 7-9
Inconvenient disadvantage is improved when removing.Specifically, the groove in embodiment 3 on pallet 6 at station is through knot
Structure, the size of 6 upper groove of pallet is also greater than battery, and the top of three limited blocks protrudes from groove.It is corresponding below pallet 6
One fixed disk 61 is set, and fixed disk 61 only forms opening 611 in the station for needing to remove battery, and 611 sizes of the opening allow
Battery passes through.It is described to fix 61 not with the rotation of pallet 6, the gap of very little, such as 0.3-2 millimeters are kept with pallet 6.
When encapsulating normal work, battery is under the clamping of limited block, as pallet 6 rotates together.It is wanted when battery is in
When the position removed, there is opening in the fixed disk 61 below the battery, directly apply downward active force to battery, battery will
The strength is transmitted to stepped part 412/422/512, and stepped part 412/422/512 is relative to 412/424/514 turn of sliding axle
It is dynamic, and spring and/or Elastic Bolts can be deformed therewith without the movement that will limit limited block, battery is then across stepped part
412/422/512 reaches lower section.When battery be in it is non-remove position and when by accidental action downward force, since fixed disk 61 exists
The position is not open, and the rotational action of limited block is restricted, and will not influence the clamping of battery.
The series of detailed descriptions listed above only for feasible embodiment of the invention specifically
Protection scope bright, that they are not intended to limit the invention, it is all without departing from equivalent implementations made by technical spirit of the present invention
Or change should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of packaging system of lithium ion battery, it is characterised in that：Provide a kind of first heating encapsulation of lithium ion battery again
Cooling packaging method and device rapidly, which includes heat-sealing unit, transmission structure, cold seal unit, wherein the heat-sealing
Unit carries out heating encapsulation to battery core, is transferred to cold seal unit through transmission structure, then carries out cooling package.
2. a kind of packaging system of lithium ion battery according to claim 1, it is characterised in that：It is described a kind of first to heat
Rapid cooling package again is encapsulated, wherein the heating package temperature is 80 to 200 DEG C, packaging time is 1s-4s cooling package
Temperature is -10 DEG C to 30 DEG C, packaging time 1s-3s.The time interval of the heating encapsulation and cooling package is 2s to 5s.
3. a kind of packaging system of lithium ion battery according to claim 1, it is characterised in that：The transmission structure is to turn
Disk.
4. a kind of packaging system of lithium ion battery according to claim 3, it is characterised in that：The turntable includes a support
Disk has clamping device on pallet, for fixing battery.
5. a kind of packaging system of lithium ion battery according to claim 3, it is characterised in that：The clamping device includes
For limiting the first limiting device of battery left-right position and the second limiting device of limitation battery front-rear position.
6. a kind of packaging system of lithium ion battery according to claim 5, it is characterised in that：First limiting device
There is the trend of moving toward one another, opposite direction arrangement fixture block under elastic reaction including a pair.
7. a kind of packaging system of lithium ion battery according to claim 1, it is characterised in that：The heat-sealing unit by
Pneumatic mechanism, strip of paper used for sealing unit, temperature unit, time quantum composition.The pneumatic mechanism is made of adjusting knob and cylinder.It is described
Strip of paper used for sealing unit be made of upper and lower strip of paper used for sealing, top heat seal and lower part heat seal have been equipped with sensor and heater, can
To adjust temperature by each respective thermoregulator, the silicon rubber that lower seal item uses is by cushion seal pressure certain
Air-proof condition is balanced in degree.The temperature unit heats sealing strip up and down and possesses temperature digital display adjuster.When described
Between unit, Sealing period controls by time regulator, can arbitrarily be adjusted between 0.1sec~9990h by +/- button.It is described
Heat-sealing unit can automatic mode and manual mode control, when using automatic mode, the decline of upper sealing strip is controlled by brake service,
Sealing period is controlled by the time on time regulator.When using manual mode, the decline of upper sealing strip is controlled by brake service, close
The envelope time steps on the time of brake service by foot to control.
8. a kind of packaging system of lithium ion battery according to claim 1, it is characterised in that：The turntable is by can oneself
Dynamic rotation, two sides battery storing device have battery limiting, and two sides have spring chuck, and battery bottom corresponds to tray bottom and sets
There is gas vent.
9. a kind of packaging system of lithium ion battery according to claim 1, it is characterised in that：The cold seal unit by
Pneumatic mechanism, strip of paper used for sealing unit, time quantum, cooling unit composition.The pneumatic mechanism is made of adjusting knob and cylinder.It is described
Strip of paper used for sealing unit be made of upper and lower strip of paper used for sealing, the strip of paper used for sealing unit two sides connect cooling unit.The cold wind unit includes
Cryogenic air cooler and two cool air hoses straight up fixed on strip of paper used for sealing unit respectively.The time quantum, it is close
The envelope time is controlled by time regulator, can arbitrarily be adjusted between 0.1sec~9990h by +/- button.The cold seal list
Member can automatic mode and manual mode control, when using automatic mode, the decline of upper sealing strip is controlled by brake service, Sealing period
By the time control on time regulator.When using manual mode, the decline of upper sealing strip is controlled by brake service, Sealing period by
Foot steps on the time of brake service to control.
10. a kind of packaging method that any one of -9 packaging systems are implemented according to claim 1, it is characterised in that：First battery is added
Rapid cooling package is cooled down and is sealed wherein the heating package temperature is 80 to 200 DEG C, packaging time 1s-4s again for heat-seal
Filling temperature is -10 DEG C to 30 DEG C, packaging time 1s-3s, the time interval of the heating encapsulation and cooling package be 2s extremely
5s。
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| CN201810603276.7A CN108923070B (en) | 2018-06-12 | 2018-06-12 | Packaging method and device of lithium ion battery |
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| CN201810603276.7A CN108923070B (en) | 2018-06-12 | 2018-06-12 | Packaging method and device of lithium ion battery |
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| CN108923070B CN108923070B (en) | 2020-12-15 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112768780A (en) * | 2021-01-29 | 2021-05-07 | 天津市捷威动力工业有限公司 | Flexible package battery packaging process |
| CN112803076A (en) * | 2021-01-29 | 2021-05-14 | 天津市捷威动力工业有限公司 | Soft package packaging process |
| CN113285146A (en) * | 2021-07-22 | 2021-08-20 | 华东交通大学 | Electric vehicle battery heat preservation device and method |
| CN114899474A (en) * | 2022-06-16 | 2022-08-12 | 华安鑫创(江苏)新能源科技有限公司 | Packaging equipment for lithium battery assembly |
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