CN100477334C - Battery having specific package structure - Google Patents
Battery having specific package structure Download PDFInfo
- Publication number
- CN100477334C CN100477334C CNB2004800409253A CN200480040925A CN100477334C CN 100477334 C CN100477334 C CN 100477334C CN B2004800409253 A CNB2004800409253 A CN B2004800409253A CN 200480040925 A CN200480040925 A CN 200480040925A CN 100477334 C CN100477334 C CN 100477334C
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- battery
- battery container
- bonding part
- lower body
- upper body
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- 239000003792 electrolyte Substances 0.000 claims abstract description 8
- 230000001681 protective effect Effects 0.000 claims description 10
- 239000000084 colloidal system Substances 0.000 claims description 2
- 238000005056 compaction Methods 0.000 claims description 2
- 238000005452 bending Methods 0.000 claims 1
- 238000003475 lamination Methods 0.000 claims 1
- 238000003860 storage Methods 0.000 abstract description 13
- 238000007789 sealing Methods 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 6
- 238000004806 packaging method and process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 244000287680 Garcinia dulcis Species 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Images
Classifications
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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
- H01M10/04—Construction or manufacture in general
- H01M10/0431—Cells with wound or folded electrodes
-
- 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
- H01M10/04—Construction or manufacture in general
- H01M10/0436—Small-sized flat cells or batteries for portable equipment
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
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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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The present invention provides a battery having a structure for increasing the power storage capacity and output thereof. In accordance with the present invention, in a battery comprising an electrode assembly including anode plates, cathode plates and separators; and a battery case, both side bonding portions of which are folded toward adjacent sides thereof, for accommodating the electrode assembly and a designated amount of electrolyte, and sealing the electrode assembly such that two electrode terminals connected to corresponding electrode taps of the anode and cathode plates of the electrode assembly are exposed to the outside, an upper bonding portion of the battery case is folded toward the upper end of the battery case, and/or common portions of the upper bonding portion and both side portions of the battery case are cut off, and/or inner corners corresponding to the upper bonding portion have larger radiuses of curvature, and/or receipt portions for receiving the electrode assembly are respectively formed in upper and lower bodies of the battery case. The battery having the above structure has high power storage capacity and output at the same size of the battery package, and high sealing capacity and safety.
Description
Background technology
The present invention relates to a kind of battery with such encapsulating structure, this structure can improve the storage volume and the output of its electric energy, this battery more particularly, the last bonding part of battery is folding towards the upper end of battery container to be increased battery container pro rata and is contained in the length of the electrode assemblie in the battery container with the width that reduces along the longitudinal with the bonding part, power storage capacity and output with the battery of the cell package that increases same size, preferably, wherein the interior angle corresponding to last bonding part has the sealing property that larger radius of curvature provides high-quality, more preferably, the upper body and the lower body of battery container are separated from each other, and the holding portion in order to the hold electrodes assembly is respectively formed in upper body and the lower body, with power storage capacity and the output that further improves battery.
Just as Fig. 1 to 5 represented, lithium ion polymer battery 10 comprised one comprised anode, negative electrode and place anode and negative electrode between the electrode assemblie 20 of dividing plate, battery container 30, the electrolyte that is used for hold electrodes assembly 20 and specified amount, the electrode terminal 40 of the anode that is connected to electrode assemblie 20 with two of sealings and the correspondence lead-in wire of negative electrode, these two electrode terminals externally expose like this.
Hereinafter, referring to figs. 1 to 5, the assembling process of the conventional lithium ion polymer battery 10 with above-mentioned encapsulating structure will be introduced in detail.
At first, electrode terminal 40 is connected on the respective lead of the anode of electrode assemblie 20 and negative electrode by ultrasonic bonding or spot welding, and electrode assemblie 20 is arranged into the holding portion 30a of lower body 32, and the electrolyte of specified amount also is injected into holding portion 30a.Upper body 34 covers above the lower body 32, and such two electrode terminals 40 just externally expose.The extension of lower body and upper body 32 and 34 is in contact with one another and passes through Hot welding (not shown) hot pressing (pressingly heated), thereby obtains the last bonding part 30 ' and the side engagement part 30 of battery container 30 ".
Subsequently, the side engagement part 30 of the lower body of battery container 30 and upper body 32 and 34 " be folded to the sides adjacent of battery container 30 with a right angle.Protective circuit 50 vertically is arranged on the bonding part 30 ' towards battery container, and electrode terminal 40 can be connected to the appropriate section (with reference to figure 5) on the protective circuit 50 like this.
Because it is limited having the length of the conventional batteries of said structure, and the last bonding part of conventional batteries battery container is along the longitudinal extension of battery container, the assembly that holds in the battery container, the length that is to say electrode assemblie is conditional, has therefore reduced the storage volume of electric energy and the output of battery.
Summary of the invention
Therefore, the present invention designs at above problem, target of the present invention provides a battery with encapsulating structure, in this battery, the proportional increase of width that the last bonding part of the length of the electrode assemblie that holds in the length of the holding portion of battery container and the holding portion and battery container takies on vertically at battery container, thereby increase the storage volume and the output of the electric energy of onesize cell package.
Further object of the present invention is, a kind of battery with encapsulating structure is provided, in this battery, the last bonding part of battery container is easy to towards the upper end of battery container folding, and two outstanding sides of last bonding part are circular, can prevent like this workman when treatment of battery by on the outstanding side of bonding part injure.
Another one target of the present invention is, a kind of battery with encapsulating structure is provided, in this battery, even on the excision battery container public domain of bonding part and two side portions, will go up the bonding part after the upper end of battery container is folding, by fabulous sealing property, in battery, keep the decompression state that causes by vacuum corresponding to the interior angle of the electrode assemblie of public part.
The present invention also has a target to be, a kind of battery with encapsulating structure is provided, in this battery, the upper body and the lower body of battery container are separated from each other, and the holding portion that is used for the hold electrodes assembly is respectively formed at upper body and lower body, with the thickness and the length of increase electrode assemblie, thus storage volume and its output of maximization electric energy.
According to the present invention, the above and other target can realize that it comprises by a kind of battery: electrode assemblie, and this electrode assemblie comprises positive plate, minus plate and dividing plate; Battery container, its bonding part, both sides all is folded to adjacent side, in order to the battery container of hold electrodes assembly and specified amount electrolyte, and seal this electrode assemblie, two electrode terminals of contact conductor that are connected to the correspondence of the anode of electrode assemblie and minus plate so externally expose, wherein the last bonding part of battery container is folded to the upper end of battery container, so the length of electrode assemblie can increase, with the power storage capacity and the output of raising battery, and two bucklings that are arranged into the electrode terminal of bonding part along this electrode shell.
Preferably, the last bonding part of battery container and the public domain of two side portions can be resected to the appointment size.The excision size of public part is by when the size decision that folding and side engagement part goes up the lap of bonding part and side engagement part towards the battery container both sides when folding towards the upper end of battery container of last bonding part.Therefore, when the bonding part size was big, the public portion size that excise was also big.
The excision end of the last bonding part of battery container and the public part of two side portions can be circular, and this can prevent that the workman from being injured by the wedge angle of the excision end of public part in the battery assembling process.
Preferably, because the minimizing of the bonding part width that causes of the public part of excision, big radius of curvature can be arranged in order to compensate corresponding to the interior angle of last bonding part.Because the excision of public part, divide in last bonding part and side engagement portion intersection public part width less than on the width of bonding part and side engagement part, so this public part has low sealing property.
Because folding upper end with the contact battery container, last bonding part, protective circuit is disposed in the upper end of battery container, like this back side of protective circuit with regard to and the last end in contact of battery container.Therefore, has the outer length of cell package of protective circuit mounted thereto less than the outer length of the conventional batteries shown in Fig. 5 encapsulation.
Electrode assemblie can be the stacked electrode assemblie or the electrode assemblie of colloid compaction type.When the interior angle of battery container had above-mentioned larger radius of curvature, the end of electrode assemblie had the shape corresponding to the radius of curvature of this interior angle, to increase the capacity of battery.
The shape of the battery container of battery of the present invention and size are unrestricted, and preferably, this battery container can have a kind of structure of selecting from organize down, and it comprises:
" i " a kind of structure, wherein the lower end of the lower end of upper body and lower body is whole forms, and holding portion only is formed in the lower body;
" ii " a kind of structure, wherein upper body and lower body are separated from one another, and holding portion is formed in the lower body;
" iii " a kind of structure, wherein upper body and lower body are separated from one another, and holding portion is respectively formed in upper body and the lower body;
" iv " a kind of structure, wherein the lower end of the lower end of upper body and lower body is whole forms, and holding portion is respectively formed in upper body and the lower body.
(ii) and (iii), lower body separates with the upper body in structure, and when under the situation about being arranged at electrode assemblie between upper body and the lower body upper body and lower body being engaged with each other, the sealed engagement part must be formed on the top and bottom of battery container.In addition, structure (iv) in, wherein the lower end of the lower end of upper body and lower body is whole forms, and holding portion is respectively formed in upper body and the lower body, the bonding part still needs to be formed on the lower end of battery container, is distorted when folding upper body and the lower body to prevent holding portion.
Preferred, battery can have structure (iii) with structure (iv).In battery of the present invention, battery container mainly is to be made by the aluminium layer compressing tablet, and by deep draw processing formation therein holding portion.Under the degree of depth of the holding portion that handle to obtain by deep draw was 5～6 millimeters or darker situation, aperture and crackle will produce.Therefore, in order to make the battery with high power storage capacity and output, battery preferably has big width.In this case, battery preferably have structure (iii) or structure (iv), and more preferably, battery has structure (iii), so that the battery moulding is easier, and improves product stability.
When the bonding part is formed on the lower end of battery container in the mode identical with last bonding part instantly, can be selectively or preferably have all these configurations in this time bonding part, wherein: (a) the following bonding part of excision battery container and the public part of two side portions intersection; (b) the excision end of the public part of bonding part and two side portions is circular under the battery container; (c) interior angle corresponding to the electrode assemblie of this time bonding part has larger radius of curvature.
Description of drawings
The above and other target of the present invention, feature and advantage can more be well understood to by the detailed description below in conjunction with accompanying drawing:
Fig. 1 to 5 is schematic diagrames of conventional batteries encapsulating structure;
Fig. 6 to 10 is schematic diagrames of battery packaging structure according to an embodiment of the invention;
Figure 11 to 13 is schematic diagrames of battery packaging structure according to another embodiment of the invention;
Figure 14 to 15 is schematic diagrames of battery packaging structure according to still another embodiment of the invention.
Embodiment
Now, the preferred embodiments of the present invention will be described hereinbelow in detail with reference to the accompanying drawings.
Fig. 6 to 10 is perspective illustration and sectional views of the structure and the assembling process of cell package according to an embodiment of the invention.
With reference to figure 6 to 10, the cell package 100 of this embodiment comprises the electrode assemblie 200 that comprises positive plate, minus plate and dividing plate; A folding battery container 300, two of gas-tight seals are connected to the electrode terminal 400 of the counter electrode lead-in wire of the positive plate of this electrode assemblie 200 and minus plate, make external exposed electrodes terminal 400, and it also comprises a lower body 310 and upper body 320.
The last bonding part 311 of battery container 300 is folding to the upper end of battery container 300, under lower body and upper body 310 and 320 join together situation to, causes the length of electrode assemblie 200 to increase, thereby has increased the power storage capacity and the output of cell package 100.Be arranged in of the buckling of two electrode terminals 400 of bonding part 311 along battery container 300.
The public part 340 of last bonding part 311 and side engagement part 312 intersections is cut, goes up bonding part 311 like this and just is easy to fold.Therefore, the folding processing of last bonding part 311 and side engagement part 312 just is easy to carry out.More preferably, the excision end of public part 340 is circular, thereby can prevent that the workman from encapsulating at 100 o'clock not by the sharp-pointed excision end injury of public part 340 in treatment of battery.
By excising the public part 340 of bonding part 311 and side engagement part 312 intersections, the excision end of public part 340 is compared with side engagement part 312 with last bonding part 311 has relatively low sealing property.Under normal condition, the pressure of the electrode assemblie 200 that vacuum causes descends and concentrates on the excision end of public part 340.In order to overcome the above problems, in a preferred embodiment of the invention. the interior angle of going up corresponding to the last bonding part 311 of this battery container 300 has big radius of curvature, thereby obtains the big thickness of bonding part.That is to say,, compensate by the interior angle 314 of going up, thereby obtain fabulous sealing property because the bonding part size that the public part 340 of excision causes reduces.
Here, the interior radius of curvature that goes up the radius of curvature at angle 314 greater than inner lower angle 315.But the interior radius of curvature that goes up angle 314 is not limited to this, can also be to satisfy any value of above-mentioned condition.For example, in order to obtain enough engaging zones around the angle on interior 314 and suitably to disperse to be applied to the pressure of the holding portion of battery container 300, the interior radius of curvature that goes up angle 314 is three times in the radius of curvature of inner lower angle 315 at least.The interior upper limit that goes up the radius of curvature at angle 314 can be a very large numerical value, and the interior inner surface of going up angle 314 can tilt near straight line.
The another one viewpoint is that the interior radius of curvature that goes up angle 314 will be set to a suitable value, can control the stability of battery component 100 like this.Usually, battery needs a kind of structure in order to solve the safety problem that causes because of inappropriate pressure in the battery.For example on the cap assemblies of cylindrical battery, safety valve is installed, is reached or releasing compressed gas during greater than critical value in order to press in the cylindrical battery.On the other hand, when the internal pressure of the battery with said structure of the present invention reaches or during greater than critical value, the junction surface branch of this battery takes apart, thus releasing compressed gas thus.Therefore, when the cell internal pressure with said structure of the present invention reaches or during greater than critical value, compressed gas is known from experience by taking the gap that the bonding part produces apart and is put into the outside from cell row, and the outer surface at junction surface disconnects.From the stability of battery, the battery structure by the specified portions releasing compressed gas provides a kind of high stability battery.Therefore, for example, the interior radius of curvature that goes up angle 314 can be arranged in the scope of an appointment, go up angle 314 like this and under the normal operating conditions of battery, have fabulous sealing property, and under the abnormal work state that produces the battery that high internal pressure causes, be opened with releasing compressed gas thus.
Also with reference to 6 to 10, one safety element (not shown)s of figure, for example fuse, bimetal leaf or PTC can be attached on two electrode terminals 400.Preferably, this safety element uses PTC according to temperature the electric current of battery to be controlled off and on.In order to minimize the outer length of this cell package; wherein protective circuit 500 is arranged on the folding last bonding part 311 to contact the upper end of battery container 300; this protective circuit 500 is parallel to bonding part 311 and arranges that the back side of this protective circuit 500 contacts the outer surface (with reference to Figure 10) of bonding part 311 on this like this.
If it is folding to the upper end of battery container 300 just will to go up bonding part 311 under the situation that public part 340 is not removed fully, the part of public part 340 can be cut or overlapping along diagonal.
Aluminium flake is included in bonding part 311 and side engagement part 312 and the battery container 300, therefore, when last bonding part 311 when the adjacent upper end of battery container 300 is folding, the folded state of last bonding part 311 can keep.
This cell package 300 has as Fig. 6 to above structure shown in Figure 10, and the effect of these structures is as follows:
At first, by side engagement part 312 is folding and will to go up bonding part 311 folding towards the upper end of battery container 300 towards the respective side of battery container 300, can with the last bonding part 311 of this battery container 300 this battery container 300 vertically on shared width pro rata, increase the holding portion 330 of battery container 300 and will be contained in the length of the electrode assemblie 200 in the holding portion 330, thereby increase the storage volume and the output of electric energy of the battery of identical big or small cell package.
Second, because the public part 340 of the last bonding part 311 of battery container 300 and side engagement part 312 is cut, when last bonding part 311 when the upper end of battery container 300 is folding, last bonding part 311 can not hinder side engagement part 312, therefore becoming folds easily.
The 3rd, be circular by excising the last bonding part 311 that public part 340 obtains and the cut-out of side engagement part 312, therefore can prevent the tip injury of the cut part of workman.
The 4th, because the interior radius of curvature that goes up the radius of curvature 314 at angle greater than inner lower angle 315 of battery container 300, battery component can obtain the bonding part of sufficient size around the angle 314 on battery container 300 interior, therefore can provide high sealing performance because of the equiblibrium mass distribution of internal pressure.In addition, the interior radius of curvature that goes up angle 314 can be arranged on a suitable scope, makes Compressed Gas discharge the pressure position that surpasses critical value internally, thereby keeps high safety performance.
Figure 11 to 13 is the schematic diagram of battery packaging structure according to another preferred embodiment.
With reference to fig. 11 to 13, battery container 300 comprises lower body separated from one another 310 and upper body 320, and is respectively formed in lower body 310 and the upper body 320 holding portion 331 and 332 in order to hold electrodes assembly 200.Extend from the lower end of lower body 310 and upper body 320 extension 316 and 326.Under the situation of pack at electrode assemblie 200 holding portion 331 and 332, four extension heat of lower body 310 and upper body 320 merge, formed last bonding part 311, side engagement part 312 and following bonding part 317 (with reference to figure 3B), and last bonding part 311, side engagement part 312 and following bonding part 317 are respectively to upper end, side and the lower end of battery container 300 folding (as Figure 13).
Adopt and the identical mode of last public part the following public part 340 of bonding part 317 and side engagement part 312 confluces under the excision.The excision of public part 340 can be carried out in the initial period of making lower body 310 and upper body 520, and also the stage after the heat fused of bonding part 311,312 and 317 carries out as shown in figure 12.
Corresponding to the lower body 310 of bonding part 317 and the inner lower angle 315 and 325 of upper body 320 have and interior angle 313 larger radius of curvature the same with 323 that go up down.Two lower ends 205 of electrode assemblie 200 have the shape corresponding shape with inner lower angle 315 and 325.
As mentioned above, when battery container 300 is made by deep draw, be difficult to form the holding portion 331 and 332 that has 5～6 millimeters or the bigger degree of depth and do not have defective.If holding portion 331 and 332 is respectively formed in lower body 310 and the upper body 320 as shown in figure 11, then can use battery component 400 with big thickness.The degree of depth of the holding portion 331 of lower body 310 needn't be identical with the holding portion 332 of upper body 320.For convenient battery assembling process, for example easily hold electrolyte, the degree of depth of the holding portion 331 of lower body 310 should be greater than the degree of depth of the holding portion 332 of upper body 320.
Figure 14 and 15 is the schematic diagram of battery packaging structure according to still another embodiment of the invention.
Identical with battery container 300 at last embodiment described in Fig. 6 refer to figs. 14 and 15, the battery container 300 of present embodiment, the lower end of the lower end of its lower body 310 and upper body 320 is integrally formed.Yet the battery container 300 of present embodiment is different from the battery container 300 of last embodiment shown in Figure 6, its holding portion 331 and 332 forms in lower body 310 and upper body 320 respectively, and extend from the lower end of lower body 310 and upper body 320 its extension 316 and 326.This holding portion 331 and 332 can be formed on not to have lower extension and divides in 316 and 326 the lower body 310 and upper body 320.Yet in this case, the lower end of this lower body 310 and upper body 320 may be compromised during deep draw.Therefore, in order to carry out deep draw safely, preferably need lower extension to divide 316 and 326.
Figure 15 has described the vertical view and the end view of the battery container 300 before being sealed in electrode assemblie in the battery container 300.Here, it is cut to be arranged in the public part of both sides of top and bottom of battery container 300.
Cell package of the present invention is not limited to Fig. 6 to said structure shown in Figure 15, and can have other multiple structures.
Can see significantly from foregoing description, the invention provides a kind of structure of cell package, wherein the width that occupied on battery container vertical of the last bonding part of the holding portion of this battery container and the length that is arranged in the electrode assemblie in this holding portion and this battery container increases pro rata, thereby increases the power storage capacity and the output of the cell package of same size.When holding portion was respectively formed in the upper body of battery container and the lower body, this battery maximized its energy storage capacity and output like this.
In addition, by the last bonding part of excision battery container and the public part of two side portions, the last bonding part of this battery container can be easily folding to the upper end of battery container.In addition, be circular because go up two raised sides of bonding part, battery of the present invention can prevent the workman's raised sides of bonding part injury on the quilt when treatment of battery.
In addition, because the interior angle corresponding to the last bonding part of battery container (or bonding part) down and the public part of two side portions confluce has big radius of curvature, even for be easy to on the bonding part be folded to this battery container the upper end and after excising public part, this interior angle provides predetermined sealing property to keep the internal pressure of battery, thereby has predetermined closure size and the internal pressure that can stand this battery.
Be disclosed though the preferred embodiments of the present invention are purpose of description, those skilled in the art will recognize that multiple modification, interpolation and replacement are possible, and can not depart from disclosed scope and spirit of the present invention in the appended claim.
Claims (11)
1. battery comprises:
Electrode assemblie comprises positive plate, minus plate and dividing plate; And
Battery container, its bonding part, both sides is all folding to its adjacent sides, be used for the electrolyte of hold electrodes assembly and specified amount and seal this electrode assemblie, the electrode terminal of the counter electrode lead-in wire of such two positive plates that are connected to this electrode assemblie and minus plate externally exposes
Wherein the last bonding part of this battery container is folding towards the upper end of this battery container, and two electrode terminals that are arranged in bonding part on this vertically carry out bending to this battery container.
2. battery according to claim 1, wherein the public part of the last bonding part of this battery container and bonding part, both sides is cut.
3. battery according to claim 2, wherein the excision end of the public part of the last bonding part of this battery container and bonding part, both sides is circular.
4. according to claim 2 or 3 described batteries, wherein, have big radius of curvature corresponding to the interior angle of bonding part on this, described big radius of curvature can compensate the width of the bonding part of reducing owing to the public part of excision.
5. battery according to claim 1, wherein protective circuit is arranged in the upper end of this battery container, folds to this upper end and should go up the bonding part, and the back side of this protective circuit contacts this upper end like this.
6. battery according to claim 1, wherein this electrode assemblie is lamination type electrode assemblie or colloid compaction type electrode assemblie.
7. battery according to claim 4, wherein the end of this electrode assemblie has the shape to radius of curvature that should interior angle.
8. battery according to claim 1, wherein this battery container has a kind of structure of selecting from following group, and this group comprises:
(i) a kind of structure, wherein the lower end of the lower end of upper body and lower body is whole forms, and holding portion only is formed in the lower body;
(ii) a kind of structure, wherein upper body and lower body are separated from one another, and holding portion is formed in the lower body;
(iii) a kind of structure, wherein upper body and lower body are separated from one another, and holding portion is respectively formed in this upper body and the lower body; And
(iv) a kind of structure, wherein the lower end of the lower end of upper body and lower body is whole forms, and holding portion is respectively formed in this upper body and the lower body.
9. battery according to claim 8, wherein be arranged in and have under the upper body and the situation in the lower body of the battery container of a kind of structure of comprising (ii), selecting (iii) the group at this electrode assemblie, when described upper body and lower body were engaged with each other, the seal joints branch was formed on the top and bottom of battery container; Be arranged under the upper body and the situation in the lower body of the battery container with structure (iv) at this electrode assemblie, when described upper body and lower body were engaged with each other, the seal joints branch was formed on by on the lower end that engages the battery container that upper body and lower body obtain.
10. battery according to claim 8, wherein said battery container have from comprise (iii) and (iv) group a kind of structure of selecting.
11. battery according to claim 10, wherein said battery container has structure (iii).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020040006104 | 2004-01-30 | ||
| KR20040006104 | 2004-01-30 | ||
| KR1020040081532 | 2004-10-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1906779A CN1906779A (en) | 2007-01-31 |
| CN100477334C true CN100477334C (en) | 2009-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800409253A Active CN100477334C (en) | 2004-01-30 | 2004-12-16 | Battery having specific package structure |
Country Status (4)
| Country | Link |
|---|---|
| KR (1) | KR100850865B1 (en) |
| CN (1) | CN100477334C (en) |
| AT (1) | ATE506707T1 (en) |
| DE (1) | DE602004032391D1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105122494A (en) * | 2013-04-11 | 2015-12-02 | 株式会社Lg化学 | Battery cell having rounded corner |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5742869B2 (en) * | 2013-04-16 | 2015-07-01 | 株式会社豊田自動織機 | Power storage device |
| KR101713094B1 (en) * | 2014-04-23 | 2017-03-07 | 주식회사 엘지화학 | A secondary battery with improving capacity |
| KR102221806B1 (en) * | 2014-08-11 | 2021-03-02 | 삼성에스디아이 주식회사 | Curved secondary battery and manufacturing method thereof |
| KR102107000B1 (en) | 2015-12-14 | 2020-05-06 | 주식회사 엘지화학 | Electrode Assembly Employed with Recess Portion on Electrode Plate and Secondary Battery Comprising the Same |
| JP7033459B2 (en) * | 2017-10-12 | 2022-03-10 | マクセル株式会社 | Laminated battery |
| KR20200137419A (en) | 2019-05-30 | 2020-12-09 | 에스케이이노베이션 주식회사 | Pouch-type secondary battery and battery module having thereof |
| CN115004441A (en) * | 2021-07-14 | 2022-09-02 | 宁德新能源科技有限公司 | Electrochemical device and electronic device comprising same |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4154633B2 (en) | 1999-03-12 | 2008-09-24 | ソニー株式会社 | Non-aqueous electrolyte battery |
| JP2002319375A (en) * | 2001-04-19 | 2002-10-31 | Yuasa Corp | Sealed battery |
| US6673488B2 (en) * | 2001-07-23 | 2004-01-06 | Ngk Spark Plug Co., Ltd. | Packaging for polymer electrolytic cell and method of forming same |
-
2004
- 2004-10-12 KR KR1020040081532A patent/KR100850865B1/en active IP Right Grant
- 2004-12-16 DE DE602004032391T patent/DE602004032391D1/de active Active
- 2004-12-16 AT AT04808443T patent/ATE506707T1/en not_active IP Right Cessation
- 2004-12-16 CN CNB2004800409253A patent/CN100477334C/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105122494A (en) * | 2013-04-11 | 2015-12-02 | 株式会社Lg化学 | Battery cell having rounded corner |
| CN105122494B (en) * | 2013-04-11 | 2017-09-19 | 株式会社Lg 化学 | Battery cell with round shape corner |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE506707T1 (en) | 2011-05-15 |
| CN1906779A (en) | 2007-01-31 |
| DE602004032391D1 (en) | 2011-06-01 |
| KR100850865B1 (en) | 2008-08-07 |
| KR20050078183A (en) | 2005-08-04 |
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