CN206639875U - A kind of soft-package battery - Google Patents
A kind of soft-package battery Download PDFInfo
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- CN206639875U CN206639875U CN201621202584.1U CN201621202584U CN206639875U CN 206639875 U CN206639875 U CN 206639875U CN 201621202584 U CN201621202584 U CN 201621202584U CN 206639875 U CN206639875 U CN 206639875U
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- soft
- piece
- package battery
- lug
- supporter
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model provides a kind of soft-package battery, including core material, supporter and metal tabs piece；The core material forms core on the supporter；The metal tabs piece includes cathode metal lug piece and/or negative metal lug piece；The cathode metal lug piece is connected with multiple positive pole ears of the soft-package battery；The negative metal lug piece is connected with multiple negative lugs of the soft-package battery.The utility model is started with from winding basis, introduce the supporter with guiding core winding, both positive and negative polarity laminating degree can be made more closely and evenly, so as to solve the problems, such as common soft-package battery in terms of cyclicity, stability and uniformity it is poor, be advantageous to the output of big lug stabling current；Simultaneously by the way that multiple positive pole level ears or multiple negative pole level ears are arranged into cathode metal lug piece or negative metal lug piece, so as to facilitate the PUR of the battery of Soft Roll to seal, solves the problems, such as the encapsulation of soft-package battery multi pole ears.
Description
Technical field
Lithium ion battery material technical field is the utility model is related to, is related to a kind of soft-package battery, more particularly to it is a kind of soft
Bag lithium ion battery.
Background technology
Currently, electric automobile obtains rapid development, and domestic market electric automobile yield is up to 37.89 ten thousand within 2015
, increase by about 4 times on a year-on-year basis.Lithium-ion-power cell is the main energy sources that current electric automobile uses, and electrokinetic cell demand is huge,
The outstanding feature that electrokinetic cell need to possess is excellent high rate performance, to meet that electric automobile is starting, accelerate, climbed
And fast charge etc. needs the occasion of high current.
In different contour structures batteries, soft bag lithium ionic cell is due to many advantages, having obtained extensive pass
Note, soft-package battery is exactly to use polymer shell, typically the lithium ion battery of aluminum plastic film encapsulation.It has a safety feature, structure
Upper to use laminated aluminum film, in the case where potential safety hazard occurs, soft-package battery is at most only understood air-blowing and split, quick-fried without occurring
It is fried；In light weight, soft-package battery weight is light by 40% compared with the box hat lithium electricity of equivalent capability, light compared with aluminum-shell battery by 20%；Energy density is high,
Soft-package battery is high by 10%~15% compared with the box hat battery capacity of equivalent specifications size, and high compared with aluminum-shell battery 5%~10%；Internal resistance
Small, the internal resistance of soft-package battery is small compared with lithium battery, greatly reduces the more preferable from power consumption and uniformity of battery, cycle life is more
It is long, the features such as flexible design.
For the internal structure of battery, what the high rate performance of battery embodied is the overall performance of battery, material, electrolyte,
Barrier film, technique, battery core internal structure etc. can influence the high rate performance of battery.Battery core includes positive pole, negative pole and barrier film etc., in work
Skill aspect, reasonable design core strueture, the output to battery high rate performance play an important role.It is thick that core strueture includes pole piece
Degree, the design of anode ring forming mode (winding, lamination, more battery cores), lug etc., if coiling and molding battery core is exactly by each composition of battery core
Material winds form in a certain order.
In the design of these core struetures, manufacture of the lug design for electrokinetic cell is essential to what is considered, big battery core
Multiple lugs are set, then are carried out lamination design, is the common lug design of electrokinetic cell, is common in soft-package battery.It is this
Method is fairly simple, but forthright not high enough again, and internal resistance is larger.In addition, by the method for multiple core in parallel, can also obtain more
Extreme ear structure.However, this method can cause the phenomenon that battery capacity reduces, battery preparation efficiency reduces and uniformity reduces.
And existing soft-package battery, in winding, core is into rarefaction, it is also necessary to by follow-up heat cold pressing and pressure
The anode ring forming process of power chemical conversion, although the fitting tight ness rating of both positive and negative polarity pole piece can get a promotion.But both positive and negative polarity pole piece is bonded
Uniformity must not obtain and ensure, and the pole piece of edge is relatively easy to dry linting and is broken off, so as to influence the hypovolemic of battery and
Uniformity, while technological process is also add, increase production cost.
Therefore, a kind of soft-package battery with higher energy density how is obtained, for electrokinetic cell, it has also become in field
One of each production firm and line research staff's urgent problem to be solved.
Utility model content
In view of this, the technical problems to be solved in the utility model is to provide a kind of soft-package battery, and the utility model carries
The soft bag lithium ionic cell of confession, there is higher energy density, and more preferable forthright, cyclicity and uniformity again；And nothing
Need the anode ring forming process of follow-up heat cold pressing and pressure chemical conversion.
The utility model provides a kind of soft-package battery, including core material, supporter and metal tabs piece；
The core material forms core on the supporter；
The metal tabs piece includes cathode metal lug piece and/or negative metal lug piece；
The cathode metal lug piece is connected with multiple positive pole ears of the soft-package battery；
The negative metal lug piece is connected with multiple negative lugs of the soft-package battery.
Preferably, the material of the supporter is insulator；
The supporter is square body.
Preferably, the material of the supporter include high polymer material, ceramic material, glass material, elastomeric polymer and
One or more in plastics；
The winding side of the supporter has arc-shaped side；The winding face of the supporter is concave surface and/or convex surface.
Preferably, the width of the supporter is 5~25cm；
The thickness of the supporter is 1~10mm；
The length of the supporter is longer 0.5~8mm than the battery core length of the soft-package battery.
Preferably, it is copper, aluminium, electroplating surfaces with tin copper, brass, nickel, corronil, magnesium that the material of the metal tabs piece, which includes,
One or more in aluminium alloy and aluminum titanium alloy；
The metal tabs piece is square body；
The width of the metal tabs piece is less than or equal to the width of the supporter.
Preferably, when the metal tabs piece includes cathode metal lug piece and negative metal lug piece, the positive pole gold
Category lug piece is arranged on one end of the soft-package battery, and the negative metal lug piece is arranged on the another of the soft-package battery
End.
Preferably, multiple positive pole ears of the soft-package battery are connected on the cathode metal lug piece side by side；
Multiple negative lugs of the soft-package battery are connected on the negative metal lug piece side by side.
Preferably, the width of the positive pole ear is 2~70mm；
The width of negative lug is 2~70mm between described；
The material of the lug is identical with the pole piece current collector material of the soft-package battery；Or the positive pole ear is
One or more in aluminium pole ears, almag lug and aluminum titanium alloy lug, the negative lug be nickel lug, copper polar ear,
One or more in corronil lug and brass lug.
Preferably, it is additionally provided with PUR on the metal tabs piece；
The metal tabs piece part is arranged in the encapsulation of the soft-package battery, is partly arranged on the soft-package battery
Encapsulation is outer.
Preferably, it is described to be arranged to weld；
The method of the welding includes the one or more in ultrasonic bonding, laser welding and spot welding.
The utility model provides a kind of soft-package battery, including supporter and metal tabs piece；The electricity of the soft-package battery
Core material forms core on the supporter；The metal tabs piece includes cathode metal lug piece and/or negative pole gold
Belong to lug piece；The cathode metal lug piece is connected with multiple positive pole ears of the soft-package battery；The negative metal pole
Auricle is connected with multiple negative lugs of the soft-package battery.Compared with prior art, the utility model is for existing soft
Bag lithium ion battery, particularly power soft-package battery, core is loose, and the fitting of both positive and negative polarity pole piece is uneven, and the pole of edge
The problem of piece is relatively easy to dry linting and is broken off, so as to have impact on the hypovolemic and uniformity of battery；And due to soft-package battery
Heat-sealable is sealed and play sealing is PUR, is not suitable for multi pole ears design and the setting of multi pole ears is irrational
Problem, causes the high rate performance of battery to reduce the defects of increasing with internal resistance.The utility model is started with from winding basis, and introducing has
The supporter of core winding is guided, both positive and negative polarity laminating degree can be made more closely and evenly, existed so as to solve common soft-package battery
The problem of poor in terms of cyclicity, stability and uniformity, be advantageous to the output of big lug stabling current；Simultaneously by will be multiple
Positive pole level ear or multiple negative pole level ears are arranged to cathode metal lug piece or negative metal lug piece, so as to facilitate the battery of Soft Roll
PUR sealing, solve the problems, such as soft-package battery multi pole ears encapsulation；And Soft Roll lithium-ion electric provided by the utility model
Pond, without anode ring forming processes such as follow-up heat cold pressing and pressure chemical conversions, so as to solve soft-package battery production process it is numerous and diverse and
The problem of cost is higher.
Brief description of the drawings
Scheme the top view for the structure schematic diagram that lA is supporter provided by the utility model and metal tabs piece；
Figure 1B is longitudinal side view of the structure schematic diagram of supporter provided by the utility model and metal tabs piece；
Scheme the transverse side view for the structure schematic diagram that lC is supporter provided by the utility model and metal tabs piece；
The vertical view of the structure schematic diagram for the core that Fig. 2A is obtained by supporter provided by the utility model guiding winding
Schematic diagram；
The transverse direction of the structure schematic diagram for the core that Fig. 2 B are obtained by supporter provided by the utility model guiding winding
Schematic side view；
Soft-package battery after the core aluminum-plastic membrane used for packaging that Fig. 3 A provide for the utility model embodiment 1 is molded the vertical view of sketch
Figure；
Soft-package battery after the core aluminum-plastic membrane used for packaging that Fig. 3 B provide for the utility model embodiment 1 is molded the longitudinal direction of sketch
Side view；
Soft-package battery after the core aluminum-plastic membrane used for packaging that Fig. 3 C provide for the utility model embodiment 1 is molded the transverse direction of sketch
Side view.
Embodiment
In order to further appreciate that the utility model, preferred embodiment of the present utility model is carried out with reference to embodiment
Description, but it is to be understood that these descriptions are simply for further explanation feature and advantage of the present utility model rather than to this reality
With the limitation of new patent requirement.
All raw materials of the utility model, its source is not particularly limited, commercially buying or according to this area skill
It is prepared by conventional method known to art personnel.
All raw materials of the utility model, its specification is not particularly limited, and the utility model preferably uses lithium ion battery
Field regular size.
The utility model provides a kind of soft-package battery, including core material, supporter and metal tabs piece；
The core material forms core on the supporter；
The metal tabs piece includes cathode metal lug piece and/or negative metal lug piece；
The cathode metal lug piece is connected with multiple positive pole ears of the soft-package battery；
The negative metal lug piece is connected with multiple negative lugs of the soft-package battery.
The soft-package battery is not particularly limited the utility model, with Soft Roll lithium ion well known to those skilled in the art
Battery, those skilled in the art can be selected and adjusted according to practical condition, quality requirement and properties of product
Whole, core material described in the utility model preferably includes positive electrode, negative material and barrier film etc., and the soft-package battery is preferably also
Including wrapping film (aluminum plastic film) etc., wherein the core material such as the positive electrode, negative material and barrier film, by winding,
Form the core or battery core of soft-package battery.
Cathode metal lug piece described in the utility model is connected with multiple positive pole ears of the soft-package battery, that is, passes through
It is connected with multiple positive pole ears, forms single cathode metal lug piece.Negative metal lug piece described in the utility model with
Multiple negative lugs of the soft-package battery are connected, i.e., by being connected with multiple negative lugs, form single negative pole gold
Belong to lug piece.The method being connected is not particularly limited the utility model, with connection well known to those skilled in the art
Method, those skilled in the art can be selected and adjusted according to practical condition, quality requirement and properties of product
It is whole, it is described in the utility model be connected preferably weld；The method of the welding more preferably includes ultrasonic bonding, laser welding
With the one or more in spot welding, more preferably ultrasonic bonding, laser welding or spot welding, most preferably ultrasonic bonding.
The shape of the supporter is not particularly limited the utility model, and those skilled in the art can be according to actual life
Production situation, quality requirement and properties of product are selected and adjusted, and in the present embodiment, the supporter is preferably square
Body, more preferably winding side have the square body of arc-shaped side.Its role is to core material is formed wound on the supporter and rolled up
During core, more closely and evenly, winding side is not likely to produce dead folding, dry linting or fractureed both positive and negative polarity laminating degree.
In this embodiment, the winding face of the supporter is also preferably concave surface and/or convex surface, or two volumes of supporter
It is simultaneously concave surface or convex surface simultaneously around face.Its role is to the convex configuration among supporter, can make the fitting of both positive and negative polarity pole piece more
Closely；Concave structure among supporter, the small Volume Changes of battery core pole piece in charge and discharge process can be more accommodated, from
And the stability of battery can be improved.
The size of the supporter is not particularly limited the utility model, and those skilled in the art can be according to reality
The border condition of production, quality requirement and properties of product are selected and adjusted, and in the present embodiment, the size of the supporter is big
The small size preferably according to soft-package battery or core material is adjusted, specifically, the width of the supporter be preferably 5~
25cm, more preferably 10~20cm, most preferably 13~17cm；The thickness of the supporter is preferably 1~10mm, more preferably
3~8mm, most preferably 5~6mm；The length of the supporter is preferably longer 0.5~8mm than the battery core length of the soft-package battery,
It is more preferably longer 2~6mm than battery core length, it is most preferably longer 3~5mm than battery core length.
The material of the supporter is not particularly limited the utility model, with conventional material well known to those skilled in the art
Matter, those skilled in the art can be selected and adjusted according to practical condition, quality requirement and properties of product,
In the present embodiment, the material of the supporter is preferably insulator, more preferably flexible insulator.Its role is to
Further lift the service life of battery.Because battery is during discharge and recharge, small volumetric expansion is had, makes pole piece office
Portion produces stress.Under long-term charge and discharge cycles, pole piece coating is possible to that powder phenomenon-tion can occur, so as to lose activity, drop
Low capacity, stability and uniformity are also destroyed.However, in the case that supporter is flexible, the stress transfer of generation
Onto supporter, the excess tension of pole piece is avoided, so as to keep the stability of pole piece coating, finally ensure that the steady of discharge and recharge
It is qualitative.
The material of supporter described in the utility model is more specifically preferably high polymer material, ceramic material, glass material, bullet
One or more in property polymer and plastics, more preferably high polymer material, ceramic material, glass material, elastomeric polymer
Or plastics.Its role is to, by the core material of the soft-package battery on the supporter, core is formed, so that
Both positive and negative polarity laminating degree more closely and evenly, and also simplify the anode ring forming work of follow-up heat cold pressing and pressure chemical conversion
Sequence.
In the present embodiment, the metal tabs piece preferably includes cathode metal lug piece and/or negative metal lug piece,
More preferably include cathode metal lug piece and negative metal lug piece.Its role is to by cathode metal lug piece (big metal
Piece) linked together with the positive pole multi pole ears of core, a firm structure is formed, the encapsulation for solving soft-package battery multi pole ears is asked
Topic, and the Transition Design of this multi pole ears and big metal tabs piece, can obtain big lug effect, lift times of soft-package battery
Rate performance, battery-heating amount is reduced, soft-package battery is worked suitable for high magnification.
Connected mode between the metal tabs piece and multistage ear is not particularly limited the utility model, art technology
Personnel can be selected and adjusted according to practical condition, quality requirement and properties of product, in the present embodiment, described
Multiple positive pole ears of soft-package battery are preferably connected on the cathode metal lug piece side by side；The multiple of the soft-package battery bear
Pole lug is connected on the negative metal lug piece side by side.Its role is to the transition of multi pole ears and big metal tabs piece is set
Meter, can obtain big lug effect, lift the high rate performance of soft-package battery, reduce battery-heating amount, be applied to soft-package battery
High magnification works.
The method of the connection is not particularly limited the utility model, with connection method well known to those skilled in the art
, those skilled in the art can be selected and adjusted according to practical condition, quality requirement and properties of product, this
Connection described in utility model is preferably to weld；The method of the welding more preferably includes ultrasonic bonding, laser welding and spot welding
In one or more, more preferably ultrasonic bonding, laser welding or spot welding, most preferably ultrasonic bonding.
The shapes and sizes of the metal tabs piece are not particularly limited the utility model, and those skilled in the art can be with
Selected and adjusted according to practical condition, quality requirement and properties of product, in the present embodiment, the metal tabs
Piece is preferably square body, and the width of the metal tabs piece is more preferably less than or equal to the width of the supporter.Its role is to,
Soft-package battery is facilitated to carry out plastic packaging.
The position relationship of the metal tabs piece is not particularly limited the utility model, and those skilled in the art can root
Selected and adjusted according to practical condition, quality requirement and properties of product, in the present embodiment, the metal tabs piece
It is preferably partially disposed in the encapsulation of the soft-package battery, is partly arranged on outside the encapsulation of the soft-package battery.Its role is to,
Soft-package battery is facilitated to carry out plastic packaging.
In this embodiment, it is described when the metal tabs piece includes cathode metal lug piece and negative metal lug piece
Cathode metal lug piece is preferably provided at one end of the soft-package battery, and the negative metal lug piece is preferably provided at described soft
The other end of bag battery.Its role is to cathode metal lug piece and negative metal lug piece are separately positioned on battery core longitudinal direction side
To both ends, the battery core obtained after rolled, encapsulation, fluid injection, sealing, big pole of the two big metal tabs pieces respectively as both positive and negative polarity
Ear, the both ends end to end of battery core are distributed in, are in same one end different from two lugs of both positive and negative polarity of general soft-package battery.This both ends
The both positive and negative polarity lug design of distribution, expands the distance between both positive and negative polarity, so as to improve the security in terms of external short circuit.
The material of the metal tabs piece is not particularly limited the utility model, with well known to those skilled in the art normal
Advise material, those skilled in the art can be selected according to practical condition, quality requirement and properties of product and
Adjustment, in the present embodiment, the material of the metal tabs piece is preferably identical with the pole piece current collector material of the soft-package battery.
The defects of resistance caused by its role is to reduce material difference increases, and high rate performance reduces.
The material of metal tabs piece described in the utility model more specifically preferably include copper, aluminium, electroplating surfaces with tin copper, brass, nickel,
One or more in corronil, magnesium alloy and aluminum titanium alloy, more preferably copper, aluminium, electroplating surfaces with tin copper, brass, nickel, copper
Nickel alloy, magnesium alloy or aluminum titanium alloy.
The other conditions of the metal tabs piece are not particularly limited the utility model, and those skilled in the art can root
Selected and adjusted according to practical condition, quality requirement and properties of product, in the present embodiment, the metal tabs piece
On be preferably additionally provided with PUR.Its role is to for being sealed with encapsulating material aluminum plastic film, easily facilitate soft-package battery
Plastic packaging.
The material of multiple grades of ears of the soft-package battery is not particularly limited the utility model, with those skilled in the art
Well known conventional material, those skilled in the art can enter according to practical condition, quality requirement and properties of product
Row selection and adjustment, in the present embodiment, the both positive and negative polarity lug can directly be formed by the mode being die cut, can also be by welding
Mode obtain.When the both positive and negative polarity lug forms lug by being die cut, its material is consistent with pole piece current collector；The both positive and negative polarity
The material of lug is preferably identical with the collector material of the both positive and negative polarity pole piece of the soft-package battery.It is poor its role is to reduce material
The defects of resistance increases caused by different, and high rate performance reduces.
When the both positive and negative polarity lug obtains lug by welding manner, the material of the multiple positive pole ear is more specifically preferred
Including the one or more in aluminium pole ears, almag lug and aluminum titanium alloy lug, more preferably aluminium pole ears, almag pole
Ear or aluminum titanium alloy lug.The material of multiple negative lugs described in the utility model more specifically preferably include nickel lug, copper polar ear,
One or more in corronil lug and brass lug, more preferably nickel lug, copper polar ear, corronil lug or brass
Lug.
The size of the single lug is not particularly limited the utility model, with well known to those skilled in the art
Lug size, those skilled in the art can be selected according to practical condition, quality requirement and properties of product
And adjustment, in the present embodiment, the width of the single positive pole ear is preferably 2~70mm, and more preferably 10~50mm is optimal
Elect 20~40mm as；The width of the single negative lug is preferably 2~70mm, more preferably 10~50mm, is most preferably
20~40mm.
Referring to figure lA, Figure 1B and figure lC, figure lA, Figure 1B, figure lC are respectively supporter and metal provided by the utility model
The top view of the structure schematic diagram of lug piece, longitudinal side view and transverse side view.Wherein, Figure 1A is top view, Tu1BWei
Longitudinal side view, Fig. 1 C are transverse side view；1 is supporter body, and 2 be cathode metal lug piece and negative metal lug piece,
3 be the PUR being arranged on cathode metal lug piece and negative metal lug piece.
Referring to Fig. 2A and Fig. 2 B, Fig. 2A, Fig. 2 B are respectively that supporter guiding winding provided by the utility model is obtained
The schematic top plan view of the structure schematic diagram of core and horizontal schematic side view.Wherein, Fig. 2A is schematic top plan view, and Fig. 2 B are horizontal stroke
To schematic side view；4 be just (negative) pole multi pole ears, and 5 be core.
The utility model above-mentioned steps provide a kind of soft-package battery containing supporter and metal tabs piece, and this practicality is new
The soft bag lithium ionic cell that type provides, is made up of the core containing supporter and multipole ear structure, electrolyte and aluminum plastic film etc..
Core includes both positive and negative polarity pole piece, barrier film and supporter.Battery by aging, chemical conversion, degasification, cut airbag, two envelopes, lateral edge
Sanction, folding, after scalding, resultant battery can be obtained.
Soft-package battery provided by the utility model, both positive and negative polarity is located at the both ends of battery, than in general lug in the same side
Soft-package battery has more the security in terms of external short circuit occurs.In addition, it can be carried as both positive and negative polarity lug by big metal tabs piece
Charging and discharging currents it is bigger, meet the high-power occasion of the needs such as electric automobile power battery, automobile starting power supply.Due to using
Aluminum plastic film is as encapsulating material, and for aluminum hull, weight is mitigated, and the overall energy density of battery gets a promotion, this with
The policy requirements of raising of the country to electric automobile power battery energy density are consistent.
Especially during electric automobile and battery product transport and use, especially in the environment often vibrated
Under, the stability of battery structure is very important.Core strueture of the present utility model containing supporter, is guided by supporter
Pole piece coiling and obtain, the battery core that supporter guiding winding obtains, stabilized structure, while big metal tabs piece and core are just
Negative pole multi pole ears weld together, and connect into a more firm structure.
In the application scenario of battery module and battery system, such as electric automobile, honourable energy storage, energy-accumulating power station, distributed storage
Energy, power grid frequency modulation energy-accumulating power station etc., battery with two side terminals be ensure battery pack and system job stability and life-span it is crucial because
Element.Supporter provided by the utility model guiding winding and the core obtained, close structure, greatly promote battery stability,
Uniformity and cyclicity, so as to greatly promote the stability of battery system, reliability and service life.This outer support makes
With the both positive and negative polarity pole piece of the core of acquisition is brought into close contact, and core is molded, the battery core without follow-up heat cold pressing and pressure chemical conversion
Molding procedure, greatly reduce the complexity and cost of process.
Particularly in battery, aspect, battery pole ear of the present utility model are the big metal pole that multistage auricle is welded to connect in groups
Auricle, the thickness of lug is increased, can also obtain the high big lug of hardness, and the structure that is square.In addition, whole core strueture is steady
Gu it is unlikely to deform.These features cause there is easy advantage during battery module combination, such as can be inserted directly into external
In groove.This has stronger application advantage in electric automobile, energy storage field etc..
In order to further illustrate the utility model, with reference to embodiments to a kind of soft-package battery provided by the utility model
It is described in detail, but it is to be understood that these embodiments are implemented under premised on technical solutions of the utility model,
Detailed embodiment and specific operating process are given, simply to further illustrate feature and advantage of the present utility model,
Rather than the limitation to the utility model claims, the scope of protection of the utility model are also not necessarily limited to following embodiments.
Embodiment 1
Using the insulator of elastomeric polymer as supporter, width 10cm, thickness 3mm, length 15cm, supporter
Winding side there is arc-shaped side.The core material such as both positive and negative polarity pole piece and barrier film is wound based on supporter, wound on institute
State on supporter, form core.
Supporter long 2mm more each than core upper and lower ends.Both positive and negative polarity pole piece respectively has three lugs, and lug width is 8mm.Lug
It is welded to by the welding method of ultrasonic wave on pole piece.Positive pole ear material is aluminium pole ears, and negative lug material is corronil
Lug.Positive pole ear and negative lug are separately positioned on the upper and lower ends of core.
The thickness (including supporter) of core is 17mm, and positive pole one end connection cathode metal lug piece, negative pole one end connects
Negative metal lug piece, metal tabs piece width are 7cm, and thickness 0.5mm, cathode metal lug piece material is aluminium, and negative pole is golden
It is brass to belong to lug piece material.Both positive and negative polarity multi pole ears are welded to using the method for ultrasonic bonding by the big of both positive and negative polarity side by side respectively
On sheet metal.
Referring to Fig. 2A and Fig. 2 B, Fig. 2A, Fig. 2 B are respectively that supporter guiding winding provided by the utility model is obtained
The schematic top plan view of the structure schematic diagram of core and horizontal schematic side view.Wherein, Fig. 2A is schematic top plan view, and Fig. 2 B are horizontal stroke
To schematic side view；4 be just (negative) pole multi pole ears, and 5 be core.
Then naked battery core is packaged with aluminum plastic film, the aluminum plastic film in its outer enclosure, with upper and lower metal tabs piece
PUR part is sealed, and one of side is formed by aluminum plastic film doubling, and without being sealed, another side waits to note
Sealed again after liquid, obtain the battery core containing supporter inside core.
After finally being dried to the battery core obtained, carry out fluid injection and sealing, then by aging, chemical conversion, degasification, cut gas
Bag, two envelopes, lateral edge cut out, folding, scald after, obtain finished product soft-package battery.
It is respectively the core envelope that the utility model embodiment 1 provides referring to Fig. 3 A, Fig. 3 B and Fig. 3 C, Fig. 3 A, Fig. 3 B, Fig. 3 C
Fill top view, longitudinal side view and the transverse side view of the soft-package battery shaping sketch after aluminum plastic film.Wherein, Fig. 3 A are vertical view
Figure, Fig. 3 B are the side view of longitudinal direction, and Fig. 3 C are horizontal side view；6 be aluminum plastic film packaging appearance.
On technique effect, the core strueture provided by the utility model with supporter and multipole ear structure, both positive and negative polarity
Pole piece fitting is close, uniform, and the uniformity of the battery core obtained on charge-discharge performance than traditional no supporter winding is high, thus obtains
Battery capacity, internal resistance and the high uniformity of charge-discharge characteristics.
In addition, this closely structure and the high uniformity of discharge and recharge, can improve the cycle performance of battery core, extend battery
Service life.In terms of high rate performance, due to the structure with multi pole ears, the discharge and recharge of more high current can be allowed, there are 3
The battery core of lug, in principle than only one lug battery core 3 times of raising forthright again.Close core strueture is also beneficial to
The lifting forthright again of battery.
Embodiment 2
The insulator of ceramics had into arc as supporter, width 10cm, length 15cm, the winding side of supporter
Side, the arc radius of edge is 1mm, and the winding face of supporter is convex surface, and the middle projecting edge arc of supporter is partly
Footpath 1mm, supporter thick middle 4mm.The core material such as both positive and negative polarity pole piece and barrier film is wound based on supporter, winding
On the supporter, core is formed.
Supporter long 2mm more each than core upper and lower ends.Both positive and negative polarity pole piece is obtained using the method for cross cutting, respectively there is four poles
Ear, lug width are 6mm.Lug is welded on pole piece by the welding method of ultrasonic wave.Positive pole ear and negative lug difference
It is arranged on the upper and lower ends of core.
The thickness (including supporter) of core is 20mm, and positive pole one end connection cathode metal lug piece, negative pole one end connects
Negative metal lug piece, metal tabs piece width are 7cm, and thickness 0.5mm, cathode metal lug piece material is aluminium, and negative pole is golden
It is brass to belong to lug piece material.Both positive and negative polarity multi pole ears are welded to using the method for ultrasonic bonding by the big of both positive and negative polarity side by side respectively
On sheet metal.
Remaining is identical with embodiment 1.
This core structure, there is among supporter the characteristics of to protrude, make the tight ness rating of winding stronger, and lug is adopted
Formed with the mode of cross cutting, so as to further lift the uniformity of performance of battery core, cyclicity and forthright again.
Embodiment 3
Using the insulator of high molecular polymer as supporter, width 12cm, length 18cm, the winding of supporter
Side has arc-shaped side, and the arc radius of edge is 2mm, and the winding face of supporter is concave surface, and the centre of supporter is recessed
Edge arc radius 1mm, supporter thick middle 2mm.The core material such as both positive and negative polarity pole piece and barrier film is carried out based on supporter
Winding, on the supporter, form core.
Supporter long 3mm more each than core upper and lower ends.Both positive and negative polarity pole piece is obtained using the method for cross cutting, respectively there is four poles
Ear, lug width are 10mm.Lug is welded on pole piece by the welding method of ultrasonic wave.Positive pole ear and negative lug difference
It is arranged on the upper and lower ends of core.
The thickness (including supporter) of core is 15mm, and positive pole one end connection cathode metal lug piece, negative pole one end connects
Negative metal lug piece, metal tabs piece width are 8cm, and thickness 0.5mm, cathode metal lug piece material is aluminium, and negative pole is golden
It is brass to belong to lug piece material.Both positive and negative polarity multi pole ears are welded to using the method for ultrasonic bonding by the big of both positive and negative polarity side by side respectively
On sheet metal.
Remaining is identical with embodiment 1.
The bigger core of this area, supporter centre is recessed feature, can reduce battery pole piece in discharge and recharge and produce
Battery core metaboly caused by raw stress, so as to improve the cyclicity of battery.
A kind of soft-package battery provided by the utility model is described in detail above, it is used herein specifically individual
Example is set forth to principle of the present utility model and embodiment, and the explanation of above example is only intended to help and understands this reality
With new method and its core concept, including best mode, and also make it that any person skilled in the art can be real
The utility model is trampled, including is manufactured and using any device or system, and implements the method for any combination.It should be pointed out that for
, can also be new to this practicality on the premise of the utility model principle is not departed from for those skilled in the art
Type carries out some improvement and modification, and these are improved and modification is also fallen into the protection domain of the utility model claims.This reality
With new patent protect scope be defined by the claims, and may include those skilled in the art it is conceivable that other realities
Apply example.If these other embodiments, which have, is not different from the structural element of claim character express, or if they
Including the character express with claim the equivalent structural elements without essence difference, then these other embodiments should be also included in
In the range of claim.
Claims (10)
1. a kind of soft-package battery, it is characterised in that including core material, supporter and metal tabs piece；
The core material forms core on the supporter；
The metal tabs piece includes cathode metal lug piece and/or negative metal lug piece；
The cathode metal lug piece is connected with multiple positive pole ears of the soft-package battery；
The negative metal lug piece is connected with multiple negative lugs of the soft-package battery.
2. soft-package battery according to claim 1, it is characterised in that the material of the supporter is insulator；
The supporter is square body.
3. soft-package battery according to claim 2, it is characterised in that the material of the supporter include high polymer material,
One or more in ceramic material, glass material, elastomeric polymer and plastics；
The winding side of the supporter has arc-shaped side；The winding face of the supporter is concave surface and/or convex surface.
4. soft-package battery according to claim 2, it is characterised in that the width of the supporter is 5~25cm；
The thickness of the supporter is 1~10mm；
The length of the supporter is longer 0.5~8mm than the battery core length of the soft-package battery.
5. soft-package battery according to claim 1, it is characterised in that the material of the metal tabs piece include be copper, aluminium,
One or more in electroplating surfaces with tin copper, brass, nickel, corronil, magnesium alloy and aluminum titanium alloy；
The metal tabs piece is square body；
The width of the metal tabs piece is less than or equal to the width of the supporter.
6. soft-package battery according to claim 1, it is characterised in that the metal tabs piece includes cathode metal lug piece
During with negative metal lug piece, the cathode metal lug piece is arranged on one end of the soft-package battery, the negative metal pole
Auricle is arranged on the other end of the soft-package battery.
7. according to the soft-package battery described in claim 1~6 any one, it is characterised in that the soft-package battery it is multiple just
Pole lug is connected on the cathode metal lug piece side by side；
Multiple negative lugs of the soft-package battery are connected on the negative metal lug piece side by side.
8. soft-package battery according to claim 7, it is characterised in that the width of the positive pole ear is 2~70mm；
The width of the negative lug is 2~70mm；
The material of the lug is identical with the pole piece current collector material of the soft-package battery；Or the positive pole ear is aluminium pole
One or more in ear, almag lug and aluminum titanium alloy lug, the negative lug are nickel lug, copper polar ear, cupro-nickel
One or more in alloy lug and brass lug.
9. soft-package battery according to claim 1, it is characterised in that be additionally provided with PUR on the metal tabs piece；
The metal tabs piece part is arranged in the encapsulation of the soft-package battery, is partly arranged on the encapsulation of the soft-package battery
Outside.
10. soft-package battery according to claim 1, it is characterised in that it is described be connected be connected in welding；
The method of the welding includes the one or more in ultrasonic bonding, laser welding and spot welding.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621202584.1U CN206639875U (en) | 2016-11-07 | 2016-11-07 | A kind of soft-package battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621202584.1U CN206639875U (en) | 2016-11-07 | 2016-11-07 | A kind of soft-package battery |
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|---|---|
| CN206639875U true CN206639875U (en) | 2017-11-14 |
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| CN201621202584.1U Active CN206639875U (en) | 2016-11-07 | 2016-11-07 | A kind of soft-package battery |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106299465A (en) * | 2016-11-07 | 2017-01-04 | 珠海格力电器股份有限公司 | A kind of soft-package battery |
| CN110208711A (en) * | 2019-05-15 | 2019-09-06 | 天津力神电池股份有限公司 | Method for pole piece stress condition in on-line testing cylindrical battery charge and discharge process |
| CN110474013A (en) * | 2019-07-26 | 2019-11-19 | 广东烨晨智能科技有限公司 | It prepares the method for battery pole ear encapsulating structure and prepares the method for lithium battery |
| CN110948111A (en) * | 2019-12-09 | 2020-04-03 | 多氟多新能源科技有限公司 | Composite welding method for tab of soft package lithium ion battery |
| CN114497695A (en) * | 2022-01-12 | 2022-05-13 | 广州小鹏汽车科技有限公司 | Soft packet of lithium cell and electric automobile |
| CN115692819A (en) * | 2022-11-16 | 2023-02-03 | 楚能新能源股份有限公司 | Full-lug battery cell pole group, battery cell pole group manufacturing process and battery |
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2016
- 2016-11-07 CN CN201621202584.1U patent/CN206639875U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106299465A (en) * | 2016-11-07 | 2017-01-04 | 珠海格力电器股份有限公司 | A kind of soft-package battery |
| CN106299465B (en) * | 2016-11-07 | 2019-02-19 | 珠海格力电器股份有限公司 | A kind of soft-package battery |
| CN110208711A (en) * | 2019-05-15 | 2019-09-06 | 天津力神电池股份有限公司 | Method for pole piece stress condition in on-line testing cylindrical battery charge and discharge process |
| CN110208711B (en) * | 2019-05-15 | 2021-04-16 | 天津力神电池股份有限公司 | Method for on-line testing stress condition of pole piece in charging and discharging processes of cylindrical battery |
| CN110474013A (en) * | 2019-07-26 | 2019-11-19 | 广东烨晨智能科技有限公司 | It prepares the method for battery pole ear encapsulating structure and prepares the method for lithium battery |
| CN110474013B (en) * | 2019-07-26 | 2024-03-19 | 上海兰钧新能源科技有限公司 | Method for preparing battery tab packaging structure and method for preparing lithium battery |
| CN110948111A (en) * | 2019-12-09 | 2020-04-03 | 多氟多新能源科技有限公司 | Composite welding method for tab of soft package lithium ion battery |
| CN110948111B (en) * | 2019-12-09 | 2022-02-15 | 多氟多新能源科技有限公司 | Composite welding method for tab of soft package lithium ion battery |
| CN114497695A (en) * | 2022-01-12 | 2022-05-13 | 广州小鹏汽车科技有限公司 | Soft packet of lithium cell and electric automobile |
| CN115692819A (en) * | 2022-11-16 | 2023-02-03 | 楚能新能源股份有限公司 | Full-lug battery cell pole group, battery cell pole group manufacturing process and battery |
| CN115692819B (en) * | 2022-11-16 | 2023-11-03 | 楚能新能源股份有限公司 | Full-lug battery cell electrode group, manufacturing process of battery cell electrode group and battery |
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