CN208444866U - Battery - Google Patents
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- CN208444866U CN208444866U CN201820511950.4U CN201820511950U CN208444866U CN 208444866 U CN208444866 U CN 208444866U CN 201820511950 U CN201820511950 U CN 201820511950U CN 208444866 U CN208444866 U CN 208444866U
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- cover plate
- encapsulating film
- encapsulation part
- battery
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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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Abstract
The utility model discloses a kind of batteries.Battery includes battery core and encapsulating film, and encapsulating film is used for packaging electric core, and encapsulating film includes the first encapsulation part, and first encapsulation part forms the first opening, for closing the first opening after the first encapsulation part folding.Encapsulating film according to the present utility model, by encapsulating film in the way of folding packaging electric core, it not only can simplify the component and operating process of packaging electric core, but also it can be to avoid hot edge seal caused by heat-seal mode in the related technology, so as to improve the effective volume of encapsulating film, to improve the utilization rate of encapsulating film, and then the energy density of battery core can be improved.
Description
Technical field
The utility model relates to electrochemical appliance technical fields, specifically, more particularly to a kind of battery.
Background technique
Battery due to its portability, energy density is high, long using time lifetime, self discharge is low, and memory-less effect etc. is excellent
Point is widely used in day electronic product.During battery processing and manufacturing, due to the limitation of packaged type, encapsulation is usual
Cause the reduction of battery core energy density.
Utility model content
The utility model aims to solve at least one of the technical problems existing in the prior art.For this purpose, the utility model mentions
A kind of battery out, the battery have the advantages that packaging effect is good, energy density is high.
According to the battery of the utility model embodiment, comprising: battery core；Encapsulating film, the encapsulating film is for encapsulating the electricity
Core, the encapsulating film are hollow cylinder, and the encapsulating film includes the first encapsulation part, and first encapsulation part forms the first opening,
First encapsulation part is open after folding for closing described first.
According to the battery of the utility model embodiment, by encapsulating film in the way of folding packaging electric core, not only can be with
Simplify the component and operating process of packaging electric core, but also can be to avoid heat-sealing caused by heat-seal mode in the related technology
Side, so as to improve the effective volume of encapsulating film, to improve the utilization rate of encapsulating film, and then the energy that battery core can be improved is close
Degree.
Some embodiments according to the present utility model, first encapsulation part includes the first cover plate and the second cover plate, described
First cover plate and second cover plate bonding.
In some embodiments of the utility model, first cover plate and second cover plate are laminated.
In some embodiments of the utility model, first encapsulation part further includes third cover plate and the 4th cover plate,
In the circumferential direction of first encapsulation part, first cover plate, the third cover plate, second cover plate and the 4th lid
Piece is arranged successively, and first cover plate and second cover plate are arranged outside the third cover plate and the 4th cover plate.
In some embodiments of the utility model, first cover plate is Nian Jie with third cover plate, first cover plate with
The 4th cover plate bonding.
In some embodiments of the utility model, first cover plate includes: first end, the first end and described the
The stacking of three cover plates；Second end, the second end and the 4th cover plate are laminated.
Further, the first end is located at the outside of the third cover plate, and the second end is located at the 4th cover plate
Outside.
Some embodiments according to the present utility model, the encapsulating film further include the second encapsulation part, second encapsulation part
The second opening is formed, second encapsulation part is open after folding for closing described second.
In some embodiments of the utility model, second encapsulation part has the through-hole passed through for tab.
Some embodiments according to the present utility model, the thickness of first encapsulation part are more than or equal to 0.1mm and are less than etc.
In 0.3mm.
Some embodiments according to the present utility model, the encapsulating film are aluminum plastic film.
Some embodiments according to the present utility model, the encapsulating film are integrally formed part.
The additional aspect and advantage of the utility model will be set forth in part in the description.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will
Become obvious and be readily appreciated that, in which:
Fig. 1 is the status diagram after the encapsulating film packaging electric core of battery in the related technology；
Fig. 2 is the status diagram during the encapsulating film packaging electric core according to the battery of the utility model embodiment；
Fig. 3 is the status diagram during the encapsulating film packaging electric core according to the battery of the utility model embodiment；
Fig. 4 is the structural schematic diagram according to the encapsulating film of the battery of the utility model embodiment；
Fig. 5 is the structural schematic diagram according to the encapsulating film of the battery of the utility model embodiment；
Fig. 6 is the structural schematic diagram according to the encapsulating film of the battery of the utility model embodiment；
Fig. 7 is the structural schematic diagram according to the encapsulating film of the battery of the utility model embodiment；
Fig. 8 is the structural schematic diagram according to the encapsulating film of the battery of the utility model embodiment；
Fig. 9 is the structural schematic diagram according to the encapsulating film of the battery of the utility model embodiment；
Figure 10 is the structural schematic diagram according to the encapsulating film of the battery of the utility model embodiment；
Figure 11 is the structural schematic diagram according to the encapsulating film of the battery of the utility model embodiment.
Appended drawing reference:
Battery 1000,
Encapsulating film 1, battery core 2, tab 3,
First encapsulation part 10, the second encapsulation part 11,
First cover plate 110, first end 111, second end 112, the second cover plate 120, third cover plate 130, the 4th cover plate 140,
Through-hole 210, filled layer 220,
5th cover plate 230, the 6th cover plate 240, the 7th cover plate 250, the 8th cover plate 260,
Viscose glue part 300,
Aluminum plastic film 1 ', side sealing 10 ', closedtop side 20 '.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and should not be understood as to the utility model
Limitation.
In the description of the present invention, it should be understood that term " length ", " width ", " thickness ", "top", "bottom",
The orientation or positional relationship of the instructions such as "inner", "outside", " circumferential direction " be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for describing the utility model and simplifying description, rather than the device or element of indication or suggestion meaning must have specific side
Position is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, define " first ",
The feature of " second " can explicitly or implicitly include one or more of the features.In the description of the present invention,
Unless otherwise indicated, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
In the related technology, as shown in Figure 1, the packaged type of lithium ion soft-package battery mainly passes through the encapsulation of aluminum plastic film 1 ',
Battery is formed with closedtop side 20 ' and two side sealings 10 ', and closedtop side 20 ' and two side sealings 10 ' can generate bigger invalid
Volume reduces battery core energy density.
As shown in Fig. 2-Fig. 3, according to the battery 1000 of the utility model embodiment, including encapsulating film 1 and battery core 2, encapsulation
Film 1 is used for packaging electric core 2.Encapsulating film 1 is hollow cylinder, i.e., hollow and both ends open structure, encapsulating film 1 includes first opening
Mouthful.Extend the first encapsulation part 10 in the edge of first opening.First encapsulation part 10 is open after folding for closing first.
According to the battery 1000 of the utility model embodiment, by encapsulating film 1 in the way of folding packaging electric core 2, no
It only can simplify the component and operating process of packaging electric core 2, but also can be to avoid produced by heat-seal mode in the related technology
Hot edge seal to improve the utilization rate of encapsulating film 1, and then battery can be improved so as to improve the effective volume of encapsulating film 1
1000 energy density, to improve the working performance of battery 1000.
As shown in Fig. 2-Fig. 3, according to some embodiments of the present invention, encapsulating film 1 is hollow cylinder, and encapsulating film 1 also wraps
The second opening is included, the edge of the second opening extends the second encapsulation part 11, and the second encapsulation part 11 is opened after folding for closing second
Mouthful.It is understood that the second encapsulation part 11 can be by being open inner bending to close the second opening, so as to incite somebody to action to second
It blocks the end face of 2 other end of battery core.Thus, it is possible to improve the potting of battery core 2, hot edge seal can also be avoided the formation of, is mentioned
The effective area of high encapsulating film 1, so as to improve the energy density of battery core 2.Encapsulating film 1 can be encapsulated by way of folding
Battery core 2.
For example, as shown in Fig. 2, encapsulating film 1 can be in hollow cylinder, hollow cylinder before 1 packaging electric core 2 of encapsulating film
Encapsulating film 1 among have space, battery core 2 can be located at the space in.The encapsulating film 1 of hollow cylinder is for being coated at battery core 2.
The both ends open of encapsulating film 1, is respectively configured to the first opening and the second opening.Corresponding 1 end of encapsulating film of first opening
Extend the first encapsulation part 10 in edge.Extend the second encapsulation part 11 in the edge of corresponding 1 end of encapsulating film of second opening.The
One encapsulation part 10 can be towards the first opening inner bending to close the first opening, and the second encapsulation part 20 can be towards in the second opening
Bending is to close the second opening.
It should be noted that being not construed as limiting for the concrete shape of encapsulating film 1, for example, as shown in Fig. 2, when the formation of battery core 2
When for cuboid, encapsulating film 1 can be formed as rectangle hollow cylinder, encapsulating film 1 for housing in battery core 2, and encapsulating film 1
The periphery wall of battery core 2 can be attached at.First encapsulation part 10 is used to be bonded with an end face of battery core 2 after folding.Second encapsulation
Portion 11 is used to be bonded with another end face of battery core 2 after folding.Thus, it is possible to reduce the invalid package area of encapsulating film 1, improve
The utilization rate of encapsulating film 1 can also improve the stability of 2 encapsulating structure of battery core.
As shown in Figure 4-Figure 7, some embodiments according to the present utility model, the first encapsulation part 10 include the first cover plate 110
With the second cover plate 120, the first cover plate 110 and the second cover plate 120 bonding.For example, the first cover plate 110 and the second cover plate 120 can be with
It is bonded by viscose glue part 300.Thus, it is possible to be bonded together the first cover plate 110 and the second cover plate 120 by viscose glue part 300, from
And the connective stability of the first cover plate 110 and the second cover plate 120 can be improved.
As shown in Figure 5, Figure 7, in some embodiments of the utility model, viscose glue part 300 can be set to the first cover plate
110.For example, as shown in Figure 5 and 7, viscose glue part 300 can be set to 110 free end of the first cover plate end face, viscose glue part 300
Between the end face of the free end of the end face and the second cover plate 120 of the free end of the first cover plate 110.Thus, it is possible to utilize viscose glue
Part 300 fills the gap between the end face of the free end of the first cover plate 110 and the end face of the free end of the second cover plate 120, not only
First cover plate 110 and the second cover plate 120 can be bonded together, setting for the first cover plate 110 and the second cover plate 120 can also be reduced
Size is set, so as to reduce the production cost of encapsulating film 1.
As shown in figure 4, in some embodiments of the utility model, the first cover plate 110 and 120 part of the second cover plate layer
It is folded.Thus, it is possible to viscose glue part 300 is set to the first cover plate 110 part be overlapped with the second cover plate 120, consequently facilitating by first
Cover plate 110 is bonded together with the second cover plate 120, can also improve the connective stability of the first cover plate 110 and the second cover plate 120,
So as to improve the structural stability of 1 packaging electric core 2 of encapsulating film.For example, as Figure 6-Figure 7, the first encapsulation part 10 can be with
Be formed as rectangle hollow cylinder, the opposite two side walls of the first encapsulation part 10 are respectively the first cover plate 110 and the second cover plate
120, the first cover plate 110 and the second cover plate 120 can be bent in packaging electric core 2, a part of the first cover plate 110 after bending with
A part stacking of the second cover plate 120 after bending, is equipped with viscose glue part 300, glues between the first cover plate 110 and the second cover plate 120
First cover plate 110 and the second cover plate 120 can be bonded together by glue part 300, so as to by the first cover plate 110 and the second cover plate
120 are fixed at the position for closing the first opening.
As shown in figures s-11, in some embodiments of the utility model, the first encapsulation part 10 can also include third
Cover plate 130 and the 4th cover plate 140, in the circumferential direction of the first encapsulation part 10, the first cover plate 110, third cover plate 130, second
Cover plate 120 and the 4th cover plate 140 connect from beginning to end, the internal bend that third cover plate 130 and the 4th cover plate 140 are open towards first.
As a result, convenient for the first opening of the first encapsulation part 10 closing, the potting of the first encapsulation part can also be improved.
It should be noted that " head and the tail connect " mentioned herein can refer to one end and the third cover plate of the first cover plate 110
130 one end connection, the other end of third cover plate 130 are connect with one end of the second cover plate 120, the other end of the second cover plate 120
It is connect with one end of the 4th cover plate 140, the other end of the 4th cover plate 140 is connect with the other end of the first cover plate 110.Here
" connection " can be contact connectio, be also possible to be fixedly connected.First cover plate 110, third cover plate 130, the second cover plate 120 and
Four cover plates 140 can be four parts of separation independent of one another.First cover plate 110, third cover plate 130, the second cover plate 120 and
Four cover plates 140 are also possible to integral piece.
As shown in figure 9, the part of viscose glue part 300 and third cover plate 130 are viscous in some embodiments of the utility model
It connects, another part of viscose glue part 300 is Nian Jie with the 4th cover plate 140.It should be noted that it is mentioned herein " viscose glue part 300
Part " and " another part of viscose glue part 300 " are the component part on viscose glue part 300, and viscose glue part 300 includes " viscose glue part 300
Part " and " another part of viscose glue part 300 ", " part of viscose glue part 300 " can be viscous with " another part of viscose glue part 300 "
The same area part on glue part 300 is also possible to different zones part on viscose glue part 300.Thus, it is possible to pass through viscose glue part 300
Third cover plate 130 and the 4th cover plate 140 are limited to folded state, and then the packaged stability of encapsulating film 1 can be improved.
As Figure 9-Figure 11, in some embodiments of the utility model, the first cover plate 110 and third cover plate 130 are viscous
It connects, the first cover plate 110 is Nian Jie with the 4th cover plate 140.Further, as Figure 9-Figure 11, the first cover plate 110 and third cover plate
130 stackings, the first cover plate 110 and the 4th cover plate 140 are laminated.As a result, convenient for viscose glue part 300 and third cover plate 130, the 4th cover plate
140 bonding.Further, as shown in Fig. 9-Figure 10, the first cover plate 110 include first end 111 and second end 112, first
End 111 is laminated with third cover plate 130, and second end 112 and the 4th cover plate 140 are laminated.It is understood that first end 111 is the
Close to one end of third cover plate 130 on one cover plate 110, second end 112 is on the first cover plate 110 close to the one of the 4th cover plate 140
End, first end 111 and second end 112 can be symmetrical.Thus, it is possible to it is convenient for the setting of viscose glue part 300, it can be easily
First end 111 and third cover plate 130 are bonded together, second end 112 and the 4th cover plate 140 are bonded together, can also be improved
The structural stability of 1 packaging electric core 2 of encapsulating film.
Further, as shown in Fig. 9-Figure 10, first end 111 is located at the outside of third cover plate 130, and second end 112 is located at
The outside of 4th cover plate 140.For example, can be divided the first encapsulation part 10 according to foldable structure is first as shown in Fig. 9-Figure 10
Cover plate 110, third cover plate 130, the second cover plate 120 and the 4th cover plate 140, wherein the first cover plate 110 and 120 phase of the second cover plate
Right, third cover plate 130 and the 4th cover plate 140 are opposite.
It, can be first by third cover plate 130 and the 4th cover plate 140 towards the interior lateral bending of the first opening during encapsulation
Folding, at least partly third cover plate 130 can be bonded with the end face of battery core 2, and at least partly the 4th cover plate 140 can be with battery core 2
End face fitting, then the internal bend that the first cover plate 110 and the second cover plate 120 are open towards first, one of the first cover plate 110
It is point Chong Die with a part of third cover plate 130, with portion adhesive part 300 between the first cover plate 110 and third cover plate 130, the
A part of one cover plate 110 partly overlaps with the 4th the another of cover plate 140, also has between the 4th cover plate 140 and the first cover plate 110
There is portion adhesive part 300.
Certainly, first end 111 can also be located at the inside of third cover plate 130, and second end 112 is located at the 4th cover plate 140
Inside.
As shown in figure 3, some embodiments according to the present utility model, the second encapsulation part 11 has leads to for what tab 3 passed through
Hole 210.It is understood that the through-hole 210 of perforation, battery core 2 can be formed after the second encapsulation part 11 folds the second opening of closing
Tab 3 can be threaded through in through-hole 210.It is connect as a result, convenient for tab 3 with external component.Further, as shown in figure 3, it is logical
Filled layer 220 can be equipped between the internal perisporium in hole 210 and the periphery wall of tab 3.It is understood that when tab 3 is threaded through
When in through-hole 210, filled layer 220 is filled between the inner wall of through-hole 210 and the portion perimeter wall of tab 3.Filled layer as a result,
220 can seal the gap between tab 3 and through-hole 210, so as to improve the leakproofness of 1 packaging electric core 2 of encapsulating film.
Further, filled layer 220 can be rubber parts.For example, filled layer 220 can be the rubber with viscosity
Part.Filled layer 220 can not only seal the gap between through-hole 210 and tab 3 as a result, and filled layer 220 can also be by tab 3
It is Nian Jie with the second encapsulation part 11, so that tab 3 is fixed in through-hole 210, avoid tab 3 from shaking, so as to improve tab 3
Mounting stability, and then the performance of battery 1000 can be improved.
Some embodiments according to the present utility model, the thickness of the first encapsulation part 10 are more than or equal to 0.1mm and are less than or equal to
0.3mm.In other words, for the thickness at the most thick position of the first encapsulation part 10 no more than 0.3 millimeter, the first encapsulation part 10 is most thin
Thickness at position cannot be below 0.1 millimeter.It can guarantee the structural strength of encapsulating film 1, as a result, to improve encapsulating film 1
Packaged stability, can also be excessive to avoid the volume of encapsulating film 1, to improve the energy density of battery core 2.
Further, the thickness of the second encapsulation part 11 is more than or equal to 0.1mm and is less than or equal to 0.3mm.In other words, the second envelope
For thickness at the most thick position in dress portion 11 no more than 0.3 millimeter, the thickness at the most thin position of the second encapsulation part 11 cannot be low
In 0.1 millimeter.It can guarantee the structural strength of encapsulating film 1 as a result, to improve the packaged stability of encapsulating film 1, can also keep away
The volume for exempting from encapsulating film 1 is excessive, to improve the energy density of battery core 2.
Some embodiments according to the present utility model, encapsulating film 1 can be aluminum plastic film.Aluminum plastic film has high barrier property
And good cold stamping shaped property, paracentesis resistance, electrolyte resistance stability and electrical property (including insulating properties), based on above special
Property, aluminum plastic film often as packaging electric core encapsulating film, and aluminum plastic film at ontology, material is more, so as to reduce battery
1000 manufacturing cost.
Some embodiments according to the present utility model, encapsulating film 1 are integrally formed part.Thus, it is possible to improve the envelope of battery core 2
Leakproofness is filled, can also avoid the formation of hot edge seal, improves the effective area of encapsulating film 1, it is close so as to the energy that improves battery core 2
Degree.Encapsulating film 1 can by way of folding packaging electric core 2.
Below with reference to Fig. 2-Fig. 3 and Fig. 8-Figure 10 detailed description according to the battery 1000 of the utility model embodiment.It is worth
Understand, it is described below to be merely illustrative, rather than to the concrete restriction of the utility model.
It should be noted that the battery 1000 of the utility model embodiment can be one-shot battery, or secondary electricity
Pond.Secondary cell is rechargeable battery, and relative to one-shot battery, secondary cell can be charged and discharged repeatedly.Mostly
Number mobile device such as mobile phone and laptop are all made of secondary cell power supply.In addition, as electric vehicle, hybrid power is used for
Active development has been obtained in the alternative energy source of the fossil fuel of vehicle etc., secondary cell.In different types of secondary cell,
Lithium ion secondary battery is since its high voltage and high-energy density are by broadly.
As shown in Fig. 2-Fig. 3, battery 1000 includes encapsulating film 1 and battery core 2, and encapsulating film 1 is used for packaging electric core 2.Such as Fig. 8 institute
Show, before 1 packaging electric core 2 of encapsulating film, encapsulating film 1 is in hollow cylinder, and the encapsulating film 1 of hollow cylinder is for being coated at battery core 2
Periphery wall, the open at one end of encapsulating film 1 form the first encapsulation part 10, and the first encapsulation part 10 can be by the first opening inner bending
To block the first opening.The other end of encapsulating film 1, which also opens wide, forms the second encapsulation part 11, and the second encapsulation part 11 can be by the
Two opening inner bendings are to block the second opening.
As Figure 8-Figure 10, the first encapsulation part 10 includes the first cover plate 110, third cover plate 130,120 and of the second cover plate
4th cover plate 140, in the circumferential direction of the first encapsulation part 10, the first cover plate 110, third cover plate 130,120 and of the second cover plate
4th cover plate 140 connects from beginning to end.First by third cover plate 130 and the 4th cover plate 140 towards 10 internal bend of the first encapsulation part, then will
First cover plate 110 and the second cover plate 120 towards 10 internal bend of the first encapsulation part, the both ends of the first cover plate 110 respectively with third
Cover plate 130 and the overlapping of the 4th cover plate 140, the middle section of the first cover plate 110 is Chong Die with the second cover plate 120, the first cover plate 110 and
It is bonded between third cover plate 130 by viscose glue part 300, it is viscous by viscose glue part 300 between the first cover plate 110 and the 4th cover plate 140
It connects, the first cover plate 110 is Nian Jie by viscose glue part 300 with the second cover plate 120.
As shown in Fig. 2-Fig. 3, the second encapsulation part 11 includes the 5th cover plate 230, the 6th cover plate 240, the 7th cover plate 250 and the
Eight cover plates 260, in the circumferential direction of the second encapsulation part 11, the 5th cover plate 230, the 6th cover plate 240, the 7th cover plate 250 and
Eight cover plates 260 connect from beginning to end.First by the 5th cover plate 230 and the 7th cover plate 250 towards 11 internal bend of the second encapsulation part, then by
Towards 11 internal bend of the second encapsulation part, the both ends of the 6th cover plate 240 are covered with the 5th respectively for six cover plates 240 and the 8th cover plate 260
Piece 230 and the overlapping of the 7th cover plate 250, the middle section of the 6th cover plate 240 is Chong Die with the 8th cover plate 260, the 6th cover plate 240 and the
It is bonded between five cover plates 230 by viscose glue part 300, it is Nian Jie by viscose glue part 300 between the 6th cover plate 240 and the 7th cover plate 250,
6th cover plate 240 is Nian Jie by viscose glue part 300 with the 8th cover plate 260.
As shown in figure 3, the second encapsulation part 11 has the through-hole 210 passed through for tab 3.The internal perisporium of through-hole 210 is equipped with
Filled layer 220.When tab 3 is threaded through in through-hole 210, the peripheral wall surfaces of the second encapsulation part 11 corresponding to through-hole 210 with wear
Filled layer 220 is filled between the portion perimeter wall of the tab 3 in through-hole 210.Encapsulating film 1 can be plastic-aluminum seamless film.
Encapsulating film 1 is a multilayered structure, and encapsulating film 1 includes the thermal adhesive layer with bonding characteristics as sealing,
What metal material was formed is used to keep mechanical strength and is used as the metal layer and insulating layer for stopping aqueous vapor.
Battery core 2 may include being connected to the first pole piece, the second pole piece and being arranged between the first pole piece and the second pole piece
Partition, tab 3 tool there are two, one of tab 3 is electrically connected to the first pole piece, another tab 3 is electrically connected to the second pole
Piece.Battery core 2 can be formed by the first pole piece, partition and the second pole piece coiling.First pole piece is positive plate, and the second tab is cathode
Piece.
Positive plate includes plus plate current-collecting body and the positive-active material coated in the lithium base oxide on plus plate current-collecting body surface
The bed of material.Tab 3 on positive plate can be fixed by welding on plus plate current-collecting body, can also directly be cut by plus plate current-collecting body
It is formed.Negative electrode tab includes negative current collector and the negative electrode active material that is arranged on negative current collector, and negative current collector is aluminium foil,
Negative electrode active material includes carbon material.Tab 3 in negative electrode tab can be fixed by welding on negative current collector, can also be led to
It crosses negative current collector directly to cut to be formed, the material of negative lug generally can be nickel or nickel alloy.Separator is arranged in anode
Insulating effect is played between piece and negative electrode tab.Separator can be by polyethylene, polypropylene or polyethylene and polyacrylic combination
Object is formed.The width of separator is greater than the width of positive plate and negative electrode tab, can effectively prevent in this way positive plate and negative electrode tab it
Between short circuit.
In the related technology, as shown in Figure 1, battery core encapsulation rushes hole mode using aluminum plastic film 1 ', lithium ion battery is in wrap molding
It is inevitably generated bilateral side sealing 10 ' and closedtop side 20 ' in the process.
The encapsulating film 1 of the utility model embodiment by setting hollow cylinder aluminum plastic film for encapsulating film 1, and passes through head
The mode of tail flanging, increases the flanging thickness (0.3mm) of a head flanging thickness (0.3mm) and a tail portion, but goes
In addition to the width (0.7mm) of the length (0.23mm) and two side sealings of head hot edge seal length (1.7mm) and tail portion edge sealing,
So as to improve the energy density of battery core 2, by theoretic calculating, the encapsulating film 1 of the utility model embodiment encapsulates electricity
Hole mode is rushed relative to using aluminum plastic film in the related technology after core 2,2.5%-3% can be improved in the capacity of battery core 2.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are contained at least one embodiment or example of the utility model.In the present specification, to above-mentioned art
The schematic representation of language may not refer to the same embodiment or example.Moreover, description specific features, structure, material or
Person's feature can be combined in any suitable manner in any one or more of the embodiments or examples.
While there has been shown and described that the embodiments of the present invention, it will be understood by those skilled in the art that:
These embodiments can be carried out with a variety of variations, modification, replacement in the case where not departing from the principles of the present invention and objective
And modification, the scope of the utility model are defined by the claims and their equivalents.
Claims (10)
1. a kind of battery, wherein include:
Battery core；
Encapsulating film, for encapsulating the battery core, the encapsulating film is hollow cylinder, and the encapsulating film includes the first encapsulation part, institute
It states the first encapsulation part and forms the first opening, first encapsulation part is open after folding for closing described first.
2. battery according to claim 1, wherein first encapsulation part includes the first cover plate and the second cover plate, described
First cover plate and second cover plate bonding.
3. battery according to claim 2, wherein first cover plate and second cover plate are laminated.
4. battery according to claim 2, wherein first encapsulation part further includes third cover plate and the 4th cover plate,
In the circumferential direction of first encapsulation part, first cover plate, the third cover plate, second cover plate and the 4th lid
Piece is arranged successively, and first cover plate and second cover plate are arranged outside the third cover plate and the 4th cover plate.
5. battery according to claim 4, wherein first cover plate is Nian Jie with the third cover plate, first lid
Piece is Nian Jie with the 4th cover plate.
6. battery according to claim 5, wherein first cover plate includes:
First end, the first end and the third cover plate are laminated；
Second end, the second end and the 4th cover plate are laminated.
7. battery according to claim 1, wherein the encapsulating film further includes the second encapsulation part, second encapsulation part
The second opening is formed, second encapsulation part is open after folding for closing described second.
8. battery according to claim 7, wherein second encapsulation part has the through-hole passed through for tab.
9. battery according to claim 1, wherein the thickness of first encapsulation part be more than or equal to 0.1mm and be less than etc.
In 0.3mm.
10. battery according to claim 1, wherein the encapsulating film is integrally formed part.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111261806A (en) * | 2020-03-27 | 2020-06-09 | 湖北亿纬动力有限公司 | High-strength soft package battery, manufacturing method thereof and battery module |
| CN111725441A (en) * | 2019-03-22 | 2020-09-29 | 宁德新能源科技有限公司 | Battery packaging structure |
-
2018
- 2018-04-11 CN CN201820511950.4U patent/CN208444866U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111725441A (en) * | 2019-03-22 | 2020-09-29 | 宁德新能源科技有限公司 | Battery packaging structure |
| CN111725441B (en) * | 2019-03-22 | 2023-08-11 | 宁德新能源科技有限公司 | Battery packaging structure |
| CN111261806A (en) * | 2020-03-27 | 2020-06-09 | 湖北亿纬动力有限公司 | High-strength soft package battery, manufacturing method thereof and battery module |
| CN111261806B (en) * | 2020-03-27 | 2022-11-11 | 湖北亿纬动力有限公司 | High-strength soft package battery, manufacturing method thereof and battery module |
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