CN107181005A - One kind winding wound formula battery - Google Patents
One kind winding wound formula battery Download PDFInfo
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- CN107181005A CN107181005A CN201710559795.3A CN201710559795A CN107181005A CN 107181005 A CN107181005 A CN 107181005A CN 201710559795 A CN201710559795 A CN 201710559795A CN 107181005 A CN107181005 A CN 107181005A
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- barrier film
- winding
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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
- H01M10/0583—Construction or manufacture of accumulators with folded construction elements except wound ones, i.e. folded positive or negative electrodes or separators, e.g. with "Z"-shaped electrodes or separators
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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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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- General Chemical & Material Sciences (AREA)
- Primary Cells (AREA)
Abstract
Wound formula battery is wound the invention discloses one kind, including battery core, battery core is formed by multiple winding-structure units by carrier wound of continuous barrier film, winding-structure unit includes horizontally disposed barrier film, by the spaced anode pole piece of barrier film and cathode pole piece, overall winding forms winding-structure unit, windings enclose for 0.5*N, the winding-structure unit of formation is any part intercepted that negative pole/barrier film/positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole is alternately present in repeat unit, battery pole group is formed after multiple winding-structure unit wounds.The present invention is not only without circular arc area, loss is low, circulation expansion is uniform, preparation efficiency is high, electrolyte is evenly distributed, and the wound mode of continuous barrier film makes core more stable, it is easy to the transhipment of core in automatic production line, on the other hand this layer of continuous barrier film also balances the uniformity that electrolyte is distributed in multilayer pole piece.
Description
Technical field
The present invention relates to field of batteries, more particularly to a kind of winding-wound formula battery.
Background technology
Nowadays use explosive growth of the lithium ion battery on electric tool, electrokinetic cell cost, production efficiency and
Long term life and uniformity urgently rapidly break through, so the research to battery module structure is the most important thing.Present battery component
Structure has takeup type, stacked, bag formula, stacks the-structure such as collapsible：Takeup type structure is by continuous positive plate and negative pole
Piece is separated by seperation film and is wound；And in laminated structure, specific construction unit is continuously stacked, and lead to
Seperation film is crossed to separate；Pouched case processed is that first negative pole bag is loaded in diaphragm bag, the structure then stacked in layer；
Stacking-accordion structure first makes the construction unit of stacking, then folds and forms core strueture.
It is specific as follows but the battery of this several structure has respective defect：(1) takeup type structure passes through densely
Wind sheet type negative pole and sheet type positive pole to manufacture takeup type structure, as a result battery structure is circular or oval on section
, because stress caused by the expansion and contraction of electrode is accumulated in battery structure during the charging and discharging of battery, and
When cumulative stress exceedes specified limit, battery structure can be deformed, and the deformation of battery structure causes between the electrodes uneven
Gap, the cycle performance of battery will be drastically deteriorated, and the safety of battery cannot be ensured due to the short circuit of inside battery；(2)
Laminated structure manufactures the battery structure of stacked by sequentially stacking multiple unit negative poles and multiple unit positive poles, it is necessary to big
The time and efforts of amount carrys out the processing of execution sequence stacking, and result is the process low production efficiency；(3) pouched case processed, compared to folded
Chip further increases the bag process of poor efficiency；(4) stacking-accordion structure production efficiency is high, Stability Analysis of Structures, but electrolyte layer
Between difference can influence the long-time quality of battery.
Therefore, preparation efficiency, structural stability how are considered, while take into account the long-term homogeneity of battery, it is a kind of new
Battery structure is worth research.
The content of the invention
Goal of the invention：In order to solve problems of the prior art, it is an object of the invention to provide a kind of preparation efficiency
Winding-wound formula battery that high, waste of raw materials is few, design loss is low, improves product quality, have extended cycle life,
Technical scheme：The present invention proposes a kind of following technical scheme：A kind of winding-wound formula battery, including battery core, institute
State battery core and carry out wound by carrier of continuous barrier film by the winding-structure unit of more than 1 and form, continuous barrier film ending after wound
Place is coated to top right side 1/3rd and fixation；The winding-structure unit includes horizontally disposed barrier film, positive pole pole
Piece, cathode pole piece, the anode pole piece, the cathode pole piece are arranged at intervals by the barrier film respectively, and overall winding forms described
Winding-structure unit, windings are 0.5*N circles, and wherein N is positive integer, the winding-structure unit of formation for negative pole/every
Film/positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole is alternately present in repeat unit
Battery pole group, the battery pole group septation point are formed after the part that can arbitrarily intercept, multiple winding-structure unit wounds
From both sides be anode pole piece, cathode pole piece it is relative to form outermost layer in battery pair, the battery pole group be barrier film, secondary outer layer is
Cathode pole piece, the number of plies that the barrier film is set is more than or equal to one layer, when the number of plies of the barrier film is more than one layer, the barrier film difference
It is arranged in parallel, according to the number of plies that barrier film is selected the need for actual production, controllability is good.
As a further improvement on the present invention, the winding-structure unit outermost layer two sides is all anode pole piece or negative pole
Pole piece, or a wherein face outermost layer are anode pole piece, and a face outermost layer is cathode pole piece, diversified winding-structure list in addition
Member selectivity in a variety of different desired application fields and application environment is wider.
Further, the winding-structure cellular construction is positive pole/barrier film/negative pole/barrier film/positive pole, or negative pole/every
Film/positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole, or positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole/every
Film, or positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole/barrier film/positive pole, or negative pole/barrier film/positive pole/barrier film/negative pole.
It is more highly preferred to, the multiple winding-structure unit is using continuous barrier film as carrier, and continuous wound formation is comprising any
The battery pole group of the layer anode pole piece number of plies.
Further, the multiple winding-structure unit is using continuous barrier film as carrier, and continuous wound formation includes 10-19
The battery pole group of the layer anode pole piece number of plies.
In some embodiments, the winding-structure unit is with the single structure A/ structures structures of structure B+ two of D+ two
The winding-structure unit of tri- kinds of different structures of C is using continuous barrier film as carrier, and the continuous wound formation anode pole piece number of plies is 10/11 layer
The battery pole group.
In some embodiments, the winding-structure unit is with the structure B of structure D+ two of single structure B+ two or list
The winding-structure unit of two structure B of the individual structure D+ of structure B+ two of structure D+ two two kinds of different structures using continuous barrier film as
Carrier, the continuous wound formation anode pole piece number of plies is 12 or 17 layers of the battery pole group.
In some embodiments, the winding-structure unit is single or two with the structure D+ two of structure E+ two structure B+
The winding-structure unit of four kinds of different structures of individual structure C is using continuous barrier film as carrier, the continuous wound formation anode pole piece number of plies
For 13 layers or 15 layers of the battery pole group.
In some embodiments, the winding-structure unit is single or two with the structure D+ two of structure B+ two structure B+
The winding-structure unit of three kinds of different structures of individual structure C is using continuous barrier film as carrier, the continuous wound formation anode pole piece number of plies
For 14 layers or 16 layers of the battery pole group.
In some embodiments, the winding-structure unit is with the structure A/ structures structure B+ two of D+ two structure D+ two
The winding-structure unit of individual structure B+ single structures C three kinds of different structures is using continuous barrier film as carrier, and continuous wound is formed just
The pole pole piece number of plies is 18/19 layer of the battery pole group.
Beneficial effect：Compared with prior art, the present invention has advantages below：(1) compared with winding-structure, no circular arc
Area, programmable NP reduces waste of raw materials than small, and circulation expansion is uniform, and cycle period is long, for Large Copacity battery core monomer,
The separated design theory loss of structure can all be substantially reduced；(2) compared with traditional Z-shaped lamination process, efficiency high, barrier film is damaged
The loss that bad, joint etc. is brought is low；(3) than bag technique efficiency high, operation quantity is few, and homogeneity of product is high, and yields is higher；
(4) compared with stacking-folding technology, different interlayer electrolyte are more evenly distributed, and are failed due to the battery core that interlayer difference is caused
Risk is low, and cycle life is longer.(5) present invention carries out wound using one layer of continuous barrier film, on the one hand makes core more stable, just
The transhipment (such as inhaled using sucker, be not in loosening in structure and fall apart) of core in automatic production line；On the other hand should
The continuous barrier film of layer also balances the uniformity that electrolyte is distributed in multilayer pole piece.
Brief description of the drawings
Fig. 1 is the structural representation before the winding of winding-structure unit one in embodiment 1；
Fig. 2 is the structural representation of both structure A after winding-structure unit one is wound in embodiment 1；
Fig. 3 is the structural representation before the winding of winding-structure unit two in embodiment 1；
Fig. 4 is the structural representation of both structure B after winding-structure unit two is wound in embodiment 1；
Fig. 5 is the structural representation before the winding of winding-structure unit three in embodiment 1；
Fig. 6 is the structural representation of both structure C after winding-structure unit three is wound in embodiment 1；
Fig. 7 is the structural representation of battery pole group in embodiment 1；
Fig. 8 is the structural representation before the winding of winding-structure unit one in embodiment 2；
Fig. 9 is the structural representation of both structure D after winding-structure unit one is wound in embodiment 2；
Figure 10 is the structural representation of battery pole group in embodiment 2；
Figure 11 is the structural representation of battery pole group in embodiment 3；
Figure 12 is the structural representation before the winding of winding-structure unit one in embodiment 4；
Figure 13 is the structural representation of both structure E after winding-structure unit two is wound in embodiment 4；
Figure 14 is the structural representation of battery pole group in embodiment 4；
Figure 15 is the structural representation of battery pole group in embodiment 5；
Figure 16 is the structural representation of battery pole group in embodiment 6；
Figure 17 is the structural representation of battery pole group in embodiment 7；
Figure 18 is the structural representation of battery pole group in embodiment 8；
Figure 19 is the structural representation of battery pole group in embodiment 9；
Figure 20 is the structural representation of battery pole group in embodiment 10.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment, the present invention is furture elucidated, it should be understood that these embodiments are merely to illustrate
The present invention rather than limitation the scope of the present invention, after the present invention has been read, those skilled in the art are each to the present invention's
The modification for planting the equivalent form of value falls within the application appended claims limited range.
Embodiment 1：
Winding-structure unit includes 3 kinds of different structures：Winding-structure unit one, winding-structure unit two, winding-structure
Unit three.
Wherein Fig. 1 is the structure before winding-structure unit one is wound, and provided with one layer of barrier film 11, anode pole piece 11 is located at barrier film
11 lower sections, structure A such as Fig. 2 institutes of winding-structure unit one of the interval of cathode pole piece 13 behind the top of barrier film 11, the circle of winding 0.5
Show, concrete structure is positive pole/barrier film/negative pole/barrier film/positive pole.
Fig. 3 is the structure before winding-structure unit two is wound, parallel to be provided with two layers of barrier film 11, and anode pole piece 12 is located at two layers
In the middle of barrier film 11, cathode pole piece 13 is located at first layer diaphragm, volume located at the lower section of second layer barrier film 11, the interval of cathode pole piece 13
Around 0.5 circle after winding-structure unit two structure B as shown in figure 4, concrete structure be negative pole/barrier film/positive pole/barrier film/negative pole/
Barrier film/positive pole/barrier film/negative pole.
Fig. 5 is the structure before winding-structure list three is wound, and parallel to be provided with two layers of barrier film 11, cathode pole piece is located at two layers of barrier film
In the middle of 11, anode pole piece 12 is respectively separated behind the top of first layer barrier film 11 and the lower section of second layer barrier film 11, the circle of winding 0.5
The structure C of winding-structure unit three as shown in fig. 6, concrete structure be positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole/
Barrier film.
It is that carrier carries out wound, winding-structure unit one, two winding-structure units two, two windings with continuous barrier film 2
It is 10 layers of battery pole group as shown in fig. 7, at the continuous ending of barrier film 2 that construction unit three forms the anode pole piece number of plies after wound successively
At 1/3rd on the right side of cladding to top；Fixed in the way of adhesive tape, heat-sealing or glue connect, the battery pole group after wound utilizes flat
Plate carries out hot pressing, and temperature is 50~100 DEG C, and pressure is 0.1~1.5MPa.
Embodiment 2：
Winding-structure unit includes 3 kinds of different structures：Winding-structure unit one, winding-structure unit two, winding-structure
Unit three.
Wherein Fig. 8 is the structure before winding-structure unit one is wound, and parallel to be provided with two layers of barrier film 11, cathode pole piece 13 is located at
In the middle of two layers of barrier film 11, the interval of anode pole piece 12 is located at the top of first layer barrier film 11, and cathode pole piece 13 is located at the lower section of barrier film 11, volume
Around 0.5 circle after winding-structure unit one structure D as shown in figure 9, concrete structure be positive pole/barrier film/negative pole/barrier film/positive pole/
Barrier film/negative pole/barrier film/positive pole.
As shown in Figure 3-4, the winding method of winding-structure unit two and structure phase in the be the same as Example 1 of winding-structure unit two
Together, it is negative pole/barrier film/positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole.
As seen in figs. 5-6, the winding method of winding-structure unit three and structure phase in the be the same as Example 1 of winding-structure unit three
Together, it is positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole/barrier film.
It is that carrier carries out wound, winding-structure unit one, two winding-structure units two, two windings with continuous barrier film 2
Construction unit three formed successively after wound the anode pole piece number of plies for 11 layers battery pole group as shown in Figure 10, continuous barrier film 2 finishes up
At place's cladding to top right side 1/3rd；Fixed in the way of adhesive tape, heat-sealing or glue connect, the battery pole group after wound is utilized
Flat board carries out hot pressing, and temperature is 50~100 DEG C, and pressure is 0.1~1.5MPa.
Embodiment 3：
Winding-structure unit includes 2 kinds of different structures：Winding-structure unit one, winding-structure unit two.
As shown in Figure 3-4, winding-structure unit is implemented together the winding method of winding-structure unit two and structure phase in example 1
Together, it is negative pole/barrier film/positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole.
As Figure 8-9, the winding method of winding-structure unit one and structure phase in the be the same as Example 2 of winding-structure unit two
Together, it is positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole/barrier film/positive pole.
It is that carrier carries out wound, winding-structure unit one, two winding-structure units two, two windings with continuous barrier film 2
It is as shown in figure 11 for 12 layers of battery pole group that construction unit one forms the anode pole piece number of plies after wound successively；Continuous barrier film 2 finishes up
At place's cladding to top right side 1/3rd；Fixed in the way of adhesive tape, heat-sealing or glue connect, the battery pole group after wound is utilized
Flat board carries out hot pressing, and temperature is 50~100 DEG C, and pressure is 0.1~1.5MPa.
Embodiment 4：
Winding-structure unit includes 4 kinds of different structures：Winding-structure unit one, winding-structure unit two, winding-structure
Unit three, winding-structure unit four.
Wherein Figure 12 is the structure before winding-structure unit one is wound, provided with one layer of barrier film 11, cathode pole piece 11 be located at every
The lower section of film 11, the structure E of winding-structure unit one of the interval of anode pole piece 13 behind the top of barrier film 11, the circle of winding 0.5 is as schemed
Shown in 13, concrete structure is negative pole/barrier film/positive pole/barrier film/negative pole.
As Figure 8-9, the winding method of winding-structure unit one and structure phase in the be the same as Example 2 of winding-structure unit two
Together, it is positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole/barrier film/positive pole.
As shown in Figure 3-4, the winding method of winding-structure unit two and structure phase in the be the same as Example 1 of winding-structure unit three
Together, it is negative pole/barrier film/positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole.
As seen in figs. 5-6, the winding method of winding-structure unit three and structure phase in the be the same as Example 1 of winding-structure unit four
Together, it is positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole/barrier film.
It is that carrier carries out wound, winding-structure unit one, two winding-structure units two, two windings with continuous barrier film 2
Construction unit three, a winding-structure unit four form battery pole group such as Figure 14 that the anode pole piece number of plies is 13 layers after wound successively
It is shown；Coated at the continuous ending of barrier film 2 on the right side of top 1/3rd；Fix, roll up in the way of adhesive tape, heat-sealing or glue connect
The battery pole group of poststack carries out hot pressing using flat board, and temperature is 50~100 DEG C, and pressure is 0.1~1.5MPa.
Embodiment 5：
Winding-structure unit includes 3 kinds of different structures：Winding-structure unit one, winding-structure unit two, winding-structure
Unit three.
As shown in Figure 3-4, winding-structure unit is implemented together the winding method of winding-structure unit two and structure phase in example 1
Together, it is negative pole/barrier film/positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole.
As Figure 8-9, the winding method of winding-structure unit one and structure phase in the be the same as Example 2 of winding-structure unit two
Together, it is positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole/barrier film/positive pole.
As seen in figs. 5-6, the winding method of winding-structure unit three and structure phase in the be the same as Example 1 of winding-structure unit three
Together, it is positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole/barrier film.
It is that carrier carries out wound, winding-structure unit one, two winding-structure units two, two windings with continuous barrier film 2
Construction unit one, a winding-structure unit three form battery pole group such as Figure 15 that the anode pole piece number of plies is 14 layers after wound successively
It is shown；Coated at the continuous ending of barrier film 2 on the right side of top 1/3rd；Fix, roll up in the way of adhesive tape, heat-sealing or glue connect
The battery pole group of poststack carries out hot pressing using flat board, and temperature is 50~100 DEG C, and pressure is 0.1~1.5MPa.
Embodiment 6：
Winding-structure unit includes 4 kinds of different structures：Winding-structure unit one, winding-structure unit two, winding-structure
Unit three, winding-structure unit four.
As illustrated by figs. 12-13, winding-structure unit is implemented together in example 4 that the structure of winding-structure unit one is identical, be negative pole/
Barrier film/positive pole/barrier film/negative pole.
As Figure 8-9, the winding method of winding-structure unit one and structure phase in the be the same as Example 2 of winding-structure unit two
Together, it is positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole/barrier film/positive pole.
As shown in Figure 3-4, the winding method of winding-structure unit two and structure phase in the be the same as Example 1 of winding-structure unit three
Together, it is negative pole/barrier film/positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole.
As seen in figs. 5-6, the winding method of winding-structure unit three and structure phase in the be the same as Example 1 of winding-structure unit four
Together, it is positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole/barrier film.
It is that carrier carries out wound, winding-structure unit one, two winding-structure units two, two windings with continuous barrier film 2
Construction unit three, two winding-structure units four form battery pole group such as Figure 16 that the anode pole piece number of plies is 15 layers after wound successively
It is shown；Coated at the continuous ending of barrier film 2 on the right side of top 1/3rd；Fix, roll up in the way of adhesive tape, heat-sealing or glue connect
The battery pole group of poststack carries out hot pressing using flat board, and temperature is 50~100 DEG C, and pressure is 0.1~1.5MPa.
Embodiment 7：
Winding-structure unit includes 3 kinds of different structures：Winding-structure unit one, winding-structure unit two, winding-structure
Unit three.
As shown in Figure 3-4, winding-structure unit is implemented together the winding method of winding-structure unit two and structure phase in example 1
Together, it is negative pole/barrier film/positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole.
As Figure 8-9, the winding method of winding-structure unit one and structure phase in the be the same as Example 2 of winding-structure unit two
Together, it is positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole/barrier film/positive pole.
As seen in figs. 5-6, the winding method of winding-structure unit three and structure phase in the be the same as Example 1 of winding-structure unit three
Together, it is positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole/barrier film.
It is that carrier carries out wound, winding-structure unit one, two winding-structure units two, two windings with continuous barrier film 2
Construction unit one, two winding-structure units three form battery pole group such as Figure 17 that the anode pole piece number of plies is 16 layers after wound successively
It is shown；Coated at the continuous ending of barrier film 2 on the right side of top 1/3rd；Fix, roll up in the way of adhesive tape, heat-sealing or glue connect
The battery pole group of poststack carries out hot pressing using flat board, and temperature is 50~100 DEG C, and pressure is 0.1~1.5MPa.
Embodiment 8：
Winding-structure unit includes 2 kinds of different structures：Winding-structure unit one, winding-structure unit two.
As Figure 8-9, winding-structure unit is implemented together the winding method of winding-structure unit one and structure phase in example 2
Together, it is positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole/barrier film/positive pole.
As shown in Figure 3-4, winding-structure unit is implemented together the winding method of winding-structure unit two and structure phase in example 1
Together, it is negative pole/barrier film/positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole.
It is that carrier carries out wound, winding-structure unit one, two winding-structure units two, two windings with continuous barrier film 2
Construction unit one, two winding-structure units two form battery pole group such as Figure 18 that the anode pole piece number of plies is 17 layers after wound successively
It is shown；Coated at the continuous ending of barrier film 2 on the right side of top 1/3rd；Fix, roll up in the way of adhesive tape, heat-sealing or glue connect
The battery pole group of poststack carries out hot pressing using flat board, and temperature is 50~100 DEG C, and pressure is 0.1~1.5MPa.
Embodiment 9：
Winding-structure unit includes 4 kinds of different structures：Winding-structure unit one, winding-structure unit two, winding-structure
Unit three, winding-structure unit four.
As shown in Figure 1-2, winding-structure unit is implemented together in example 1 that the structure of winding-structure unit one is identical, be positive pole/every
Film/negative pole/barrier film/positive level.
As shown in Figure 3-4, the winding method of winding-structure unit two and structure phase in the be the same as Example 1 of winding-structure unit two
Together, it is negative pole/barrier film/positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole.
As Figure 8-9, the winding method of winding-structure unit one and structure phase in the be the same as Example 2 of winding-structure unit three
Together, it is positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole/barrier film/positive pole.
As seen in figs. 5-6, the winding method of winding-structure unit three and structure phase in the be the same as Example 1 of winding-structure unit four
Together, it is positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole/barrier film.
It is that carrier carries out wound, winding-structure unit one, two winding-structure units two, two windings with continuous barrier film 2
It is 18 layers that construction unit three, two winding-structure units two, a winder units four form the anode pole piece number of plies after wound successively
Battery pole group it is as shown in figure 19；Coated at the continuous ending of barrier film 2 on the right side of top 1/3rd；With adhesive tape, heat-sealing or
The mode of glue even is fixed, and the battery pole group after wound carries out hot pressing using flat board, and temperature is 50~100 DEG C, pressure for 0.1~
1.5MPa。
Embodiment 10：
Winding-structure unit includes 3 kinds of different structures：Winding-structure unit one, winding-structure unit two, winding-structure
Unit three.
As Figure 8-9, winding-structure unit is implemented together the winding method of winding-structure unit one and structure phase in example 2
Together, it is positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole/barrier film/positive pole.
As shown in Figure 3-4, the winding method of winding-structure unit two and structure phase in the be the same as Example 1 of winding-structure unit two
Together, it is negative pole/barrier film/positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole.
As seen in figs. 5-6, the winding method of winding-structure unit three and structure phase in the be the same as Example 1 of winding-structure unit three
Together, it is positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole/barrier film.
It is that carrier carries out wound, winding-structure unit one, two winding-structure units two, two windings with continuous barrier film 2
It is 19 layers that construction unit one, two winding-structure units two, a winder units three form the anode pole piece number of plies after wound successively
Battery pole group it is as shown in figure 20；Coated at the continuous ending of barrier film 2 on the right side of top 1/3rd；With adhesive tape, heat-sealing or
The mode of glue even is fixed, and the battery pole group after wound carries out hot pressing using flat board, and temperature is 50~100 DEG C, pressure for 0.1~
1.5MPa。
Embodiment 11-30,31 ...：
Required to meet difference of the battery to thickness in actual application, based on embodiment 1-10, in volume
During, increase fixed repeat unit is included from 20 layers of -39 layers of anode pole piece layer with being prepared into the different anode pole piece numbers of plies
Several battery pole groups.
Winding-structure unit as increased by one group of two structure D+, two structure B in embodiment 1 can form anode pole piece number
Winding-structure unit for 20 layers of the battery pole group, two groups of two structure D+ of increase, two structure B can form anode pole piece
Number is 30 layers of the battery pole group, the like form 40 layers, 50 layers so that the battery pole group of any anode pole piece number of plies.
The winding-structure unit of the present invention saves material not only without circular arc area, and circulation expansion is uniform, and cycle period is long,
Preparation efficiency is high, is lost low, and operation quantity is few, and different interlayer electrolyte are more evenly distributed, and structural stability is good, battery it is long-term
Homogeneity is good.And product preparation of the battery in different application field application environment gamut thickness requirements can be met, and
The cladding winding of continuous barrier film, further increases the stability of battery structure, improves battery quality.
Claims (10)
1. a kind of winding-wound formula battery, including battery core, it is characterised in that：The battery core is by the winding-structure unit of more than 1
Be that carrier carries out wound and formed with continuous barrier film (2), coated after wound at continuous barrier film (2) ending to top right side three/
At one and fixation；The winding-structure unit includes horizontally disposed barrier film (11), anode pole piece (12), cathode pole piece (13),
The anode pole piece (12), the cathode pole piece (13) are arranged at intervals by the barrier film (11) respectively, and overall winding forms described
Winding-structure unit, windings are 0.5*N circles, and wherein N is positive integer, the winding-structure unit of formation for negative pole/every
Film/positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole is alternately present in repeat unit
Battery pole group, the battery pole group septation are formed after the part that can arbitrarily intercept, multiple winding-structure unit wounds
(11) both sides of separation, which are anode pole piece (12), cathode pole piece (13) is relative forms outermost layer in battery pair, the battery pole group
For barrier film, secondary outer layer is cathode pole piece；The number of plies that the barrier film (11) is set is more than or equal to one layer, the layer of the barrier film (11)
When number is more than one layer, the barrier film (11) be arranged in parallel respectively.
2. a kind of winding according to claim 1-wound formula battery, it is characterised in that：The winding-structure unit is most
Outer layer two sides is all that either cathode pole piece (13) or a wherein face outermost layer are anode pole piece (12) to anode pole piece (12), separately
Outer face outermost layer is cathode pole piece (13).
3. a kind of winding according to claim 2-wound formula battery, it is characterised in that：The winding-structure cellular construction
For structure A：Positive pole/barrier film/negative pole/barrier film/positive pole, or structure B：Negative pole/barrier film/positive pole/barrier film/negative pole/barrier film/positive pole/
Barrier film/negative pole, or structure C：Positive pole/barrier film/negative pole/barrier film/positive pole/barrier film/negative pole/barrier film, or structure D：Positive pole/barrier film/
Negative pole/barrier film/positive pole/barrier film/negative pole/barrier film/positive pole, or structure E：Negative pole/barrier film/positive pole/barrier film/negative pole.
4. a kind of winding according to claim 1-wound formula battery, it is characterised in that：The multiple winding-structure unit
With continuous barrier film (2) for carrier, continuous wound formation includes the battery pole group of the random layer anode pole piece number of plies.
5. a kind of winding according to claim 4-wound formula battery, it is characterised in that：The multiple winding-structure unit
With continuous barrier film (2) for carrier, continuous wound formation includes the battery pole group of the 10-19 layers of anode pole piece number of plies.
6. a kind of winding according to claim 3-wound formula battery, it is characterised in that：The winding-structure unit is with list
The winding-structure unit of the individual structure B+ two of structure A/ structures D+ two three kinds of different structures of structure C is load with continuous barrier film (2)
Body, the continuous wound formation anode pole piece number of plies is 10/11 layer of the battery pole group.
7. a kind of winding according to claim 3-wound formula battery, it is characterised in that：The winding-structure unit is with list
Two kinds of two structure B of the individual structure B of structure D+ two of structure B+ two or the structure D+ of structure B+ two of single structure D+ two are not
Isostructural winding-structure unit is with continuous barrier film (2) for carrier, and the continuous wound formation anode pole piece number of plies is 12 or 17 layers
The battery pole group.
8. a kind of winding according to claim 3-wound formula battery, it is characterised in that：The winding-structure unit is to tie
The structure D+ two of structure E+ two structure B+ are single or winding-structure unit of four kinds of different structures of two structure Cs is with continuous barrier film
(2) it is carrier, the continuous wound formation anode pole piece number of plies is 13 layers or 15 layers of the battery pole group.
9. a kind of winding according to claim 3-wound formula battery, it is characterised in that：The winding-structure unit is to tie
The structure D+ two of structure B+ two structure B+ are single or winding-structure unit of three kinds of different structures of two structure Cs is with continuous barrier film
(2) it is carrier, the continuous wound formation anode pole piece number of plies is 14 layers or 16 layers of the battery pole group.
10. a kind of winding according to claim 3-wound formula battery, it is characterised in that：The winding-structure unit is to tie
The winding-structure unit of the structure A/ structures structure B+ single structures of structure D+ two of structure B+ two of D+ two C three kinds of different structures
With continuous barrier film (2) for carrier, the continuous wound formation anode pole piece number of plies is 18/19 layer of the battery pole group.
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| CN109560322A (en) * | 2017-12-29 | 2019-04-02 | 蜂巢能源科技有限公司 | The manufacturing method and electrode tinkertoy module of electrode tinkertoy module |
| CN109935911A (en) * | 2017-12-18 | 2019-06-25 | 三星Sdi株式会社 | Electrode assembly |
| CN112038708A (en) * | 2020-10-10 | 2020-12-04 | 合肥国轩高科动力能源有限公司 | Lithium ion battery roll core structure and manufacturing method thereof |
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| CN112038708A (en) * | 2020-10-10 | 2020-12-04 | 合肥国轩高科动力能源有限公司 | Lithium ion battery roll core structure and manufacturing method thereof |
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| CN107181005B (en) | 2018-10-12 |
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