CN107681069A - Battery can and battery - Google Patents
Battery can and battery Download PDFInfo
- Publication number
- CN107681069A CN107681069A CN201710638357.6A CN201710638357A CN107681069A CN 107681069 A CN107681069 A CN 107681069A CN 201710638357 A CN201710638357 A CN 201710638357A CN 107681069 A CN107681069 A CN 107681069A
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- China
- Prior art keywords
- battery
- battery cover
- corner
- cover
- lower face
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000003780 insertion Methods 0.000 claims abstract description 41
- 230000037431 insertion Effects 0.000 claims abstract description 41
- 230000001815 facial effect Effects 0.000 claims abstract description 9
- 206010068051 Chimerism Diseases 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000007373 indentation Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 abstract description 15
- 238000004544 sputter deposition Methods 0.000 abstract description 13
- 210000000988 bone and bone Anatomy 0.000 abstract description 9
- 238000005286 illumination Methods 0.000 abstract description 7
- 230000005611 electricity Effects 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 229910000838 Al alloy Inorganic materials 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 230000009194 climbing Effects 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010273 cold forging Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011255 nonaqueous electrolyte Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000001144 postural effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
- H01M50/591—Covers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
- H01M50/169—Lids or covers characterised by the methods of assembling casings with lids by welding, brazing or soldering
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The present invention provides battery can and battery.The battery can optimize the insertion guided bone that battery cover inserts to rectangular cell can body, and can prevent in the insertion in metallic foreign body intrusion battery can body, welding when sputtering thing dispersed into battery can body and to power-generating member illumination beam.The stage portion (15) for the lower section for reaching battery cover is formed at least one of a pair of short edges side of sidewall portion (12) of battery can body (10) and four corners (13), position beyond stage portion, it is less than the opening position of stage portion in the vertical direction, the lower position for forming the lower section for reaching battery cover is facial (14), battery cover has the lower face side corner (24) arranged from periphery to downside and lower surface holding section (25) relative with the stage portion of battery can body in the vertical direction, the lower face side corner of battery cover is formed as the position less than the lower surface holding section and the lower position facial contact or opposed in the vertical direction.
Description
Technical field
The present invention relates to the battery can for welding square battery can body and battery cover and forming and possesses the battery can
Battery.
Background technology
In recent years, battery-driven hybrid vehicle, electric automobile, pocket computer, electric tool are increasing.As
Such battery, lithium rechargeable battery are its representatives, as the battery shape, possess the battery can of metal rectangular-shape
The rectangular cell for being used as the battery can for housing power-generating member is popularized.Battery can is by the battery can that is formed as having bottom square tube shape
Main body and the battery cover engaged with the side wall of the battery can body are formed.The side wall of battery can body and the periphery of battery cover by
Welded on circumferential complete cycle.
In this battery can, using the welding method from top irradiation energy light beam, the periphery as welding battery cover
With the method for the side wall of battery can body.Because if from the side illumination beam of battery can, weld length extends, weldering
It is elongated to connect the time, welding equipment maximization and high priceization etc., therefore unfavorable.Because can be welded from top illumination beam, because
The periphery of this battery cover is the shape for the inner side that side wall can be inserted from above into for battery can body.It is strong in order to stablize its welding
Degree is, it is necessary to the chimeric gap that reduces as far as possible between battery can body and battery cover and be allowed to uniform.When inserting the battery cover,
If the sidewall friction of the periphery of battery cover and battery can body, it is likely that produce metallic foreign body and invade in battery can body
Receiving space.The reason for metallic foreign body is likely to become defective insulation.In order to suppress the generation of metallic foreign body, and in battery cover
Periphery, battery can body side wall between be suitably set in length direction, the chimeric gap on width.In order to stable
Weld strength, chimeric gap is reduced, need the parts precision of high battery can body and battery cover, assembly equipment
Precision, and then cause equipment cost increase, the assembling cycle time lengthening of battery can, so as to as the important of raising manufacturing cost
Factor.
In addition, on the one hand, by the long side side of sidewall portion of battery can body the long side side surface part for pressing on battery cover shape
Under state, the long side side of sidewall portion of battery can body is fixed, and makes a pair of the long side side surface parts and battery of the periphery of battery cover
Under the chimerism that a pair of long side side of sidewall portion of the side wall of can body are close to, implement from top illumination beam.On the other hand, in electricity
Between Chi Gai short brink face and edged surface portion and the short side side of sidewall portion of battery can body and corner, set according to chimeric gap
Fixed, the flat deformation of battery can body, can produce the gap on the direction at a right angle with above-below direction.If shone from top
The light beam penetrated is reached in battery can body by the gap, or the power-generating member being contained in battery can body can be damaged,
Occur that sputtering thing disperses into battery can body, once there is the above situation, then may result in electrically bad.In addition,
No matter the periphery of battery cover relative to battery can body side wall step-down or uprise in contrast, all easily occur welding not
It is good.
As these bad countermeasures are prevented, in the past, the medial surface of short side side of sidewall portion, corner in battery can body
Lower position face formed with the stage portion and the position being configured at beyond the stage portion for being at least configured at a position.Lower position
Face is in the position less than stage portion, positioned at the lower section of the battery cover.By these stage portions, lower position face, light is prevented
Beam is irradiated to the power-generating member for the receiving space being configured in battery can body, prevents that sputter thing disperses into battery can body.
Particularly, stage portion also turns into the position of the insertion extreme position of regulation battery cover.If the battery cover inserted is in above-below direction
On abut to the stage portion of battery can body, then battery cover can not be inserted further downwards.The insertion limit position of battery cover
Put and be set to appropriate position for welding.In addition, because it is difficult to which stage portion is cold-pressed by longer scope in the circumferential
Uniform height is processed as, so using lower position face, to make cold presswork become easy (patent document 1,2).
In addition, the battery cover of patent document 2 has curved lower face side corner, the lower face side corner is from its periphery
To downside on circumferential complete cycle it is continuous.When inserting battery cover, in the lower face side corner of battery cover and the side of battery can body
During the upper-end contact of wall, the lower face side corner can be slided along the upper end of the side wall, by the battery cover to the inner side of the side wall
Guiding.So, if making the underside shape of battery cover there is insertion guided bone relative to the upper end of the side wall of battery can body,
Then occurs position skew when battery cover is carried, the insertion of battery cover will not also deteriorate.This case is by battery cover
Periphery and battery can body side wall between chimeric gap be set in the case of very little be favourable.That is, by chimeric gap
Be set to it is smaller, carry when there is position skew when, the lower surface of battery cover is easier to be upper with the side wall of battery can body
End forms contact, but can prevent metallic foreign body by foregoing insertion guided bone, and prevents battery cover from climbing battery can
The upper end of the side wall of main body and cause manufacturing equipment stop situation.Further, it is possible to avoid foregoing parts precision, assembling system
The high precision int of the precision of manufacturing apparatus.
Patent document 1：Japanese Unexamined Patent Publication 2014-10936 publications
Patent document 2：Japanese Unexamined Patent Publication 2013-93119 publications
However, in battery can as patent document 2, it can reliably prevent metallic foreign body intrusion, sputtering thing from dispersing
The stage portion for being only limitted to battery can body present in circumferential scope.In circumferential scope existing for lower position face, it is relative and
Speech, it is significantly open into battery can body between the lower surface of battery cover and lower position face, exist and be easier to allow metal
In foreign matter intrusion battery can body, sputter the problem of thing disperses into battery can body.
The content of the invention
In view of above-mentioned background, problem to be solved by this invention is, with the shape optimum battery cover of battery cover to square
The insertion of battery can body insertion guided bone, and when preventing the insertion with the stage portion of battery can body and lower position face
Thing is sputtered when metallic foreign body is invaded into battery can body, welded to disperse into battery can body and to power-generating member irradiation light
Beam, and prevent metallic foreign body intrusion battery can body is interior, sputters thing to be dispersed into battery can body to a greater degree.
To realize above-mentioned problem, the present invention forms a kind of battery can, possessed：Battery can body and with the battery can body
The battery cover of engagement, the battery can body have side wall, the side wall by a pair of long side side of sidewall portion, a pair of short edges side of sidewall portion and
Four corner compositions for connecting the long side side of sidewall portion adjacent in the circumferential and the short side side of sidewall portion, the battery cover have
Periphery, a pair of long side side surface parts of this week cause, a pair of short edges side surface part and four connect the long side adjacent in the circumferential
The edged surface portion of side surface part and short brink face is formed, and can insert the battery can body in the periphery of the battery cover
Under the chimerism of the inner side of side wall, by the periphery and the sidewall weld, in the short side side of sidewall portion of the battery can body
In the corner, in stage portion of at least one position formed with the lower section for reaching the battery cover, beyond the stage portion
Position, in the vertical direction less than the position of the stage portion, the lower position face formed with the lower section for reaching the battery cover,
The battery cover has：Lower face side corner, the lower face side corner arranges from the periphery of the battery cover to downside, with described
During insertion, in the upper-end contact of the lower face side corner and the side wall of the battery can body, lower face side corner edge should
Upper end is slided, and the battery cover is guided to the inner side of the side wall；With lower surface holding section, its in the vertical direction with the battery
The stage portion of can body is relative, is engaged by the stage portion of the battery can body with the lower surface of the battery cover
The contact in portion, the insertion extreme position that the battery cover inserts to the battery can body is determined, the battery can is characterised by, institute
The lower surface holding section for stating battery cover is formed at the lower face side corner higher than the battery cover in the vertical direction
Position, the lower face side corner of the battery cover is formed as, in the vertical direction less than the position of the lower surface holding section
Place is put, with the lower position facial contact or opposed.
According to said structure, from the stage portion of the battery can body and the lower surface holding section of battery cover by battery cover to electricity
The insertion of pond can body insertion is limited to the extreme position for being adapted to welding, so as to prevent that metallic foreign body invades in the insertion
In battery can body, further, it is possible to prevent from sputtering thing to battery during welding by the lower position face of battery can body, stage portion
Dispersed in can body and to power-generating member illumination beam.
In addition, because good insertion guided bone can be obtained by the lower face side corner of battery cover, therefore, correspondingly
It can avoid parts precision, the high precision int of assembly equipment precision, and by the side of the periphery of battery cover and battery can body
Chimeric between wall is set to small, stable weld strength, in addition, can also prevent foregoing light beam from irradiating.
Also, because the lower face side corner of battery cover is low with battery can body in the position less than lower surface holding section
Position facial contact is opposed, therefore when inserting battery cover, also can be in the lower face side corner by electricity even if dislocation be present
Chi Gai is directed to after the inner side of the side wall of battery can body, by lower surface holding section and stage portion limitation insertion.It is therefore not necessary to
Worry to produce metallic foreign body because of stage portion with the contact in lower face side corner, and in the circumferential model where lower position face
Enclose, because of the lower face side corner and lower position facial contact so that closed between two positions, or to be less than between two positions gap special
The battery can of sharp document 2.Therefore, the present invention is better able to prevent in metallic foreign body intrusion battery can body, sputters thing to battery
Dispersed in can body.
Preferably, the lower position face of the battery can body has planar portions, and the planar portions are located at described
The side wall of battery can body and the lower section in gap caused by all intermarginal energy of the battery cover, along the side at a right angle with above-below direction
To extension.Metallic foreign body, sputtering thing are the small materials into the gap, and therefore, they are expected to remain in the lower section edge in the gap
With above-below direction on the flat part of direction at a right angle extension.Therefore, it is possible to more prevent the intrusion of metallic foreign body, sputter thing
Disperse.
Possessing the battery of battery can involved in the present invention can more prevent in metallic foreign body intrusion battery can body, splash
Penetrate thing to disperse into battery can body, therefore underproof generation can be prevented.
As described above, battery can involved in the present invention, can be excellent with the shape of battery cover by using said structure
The insertion guided bone that electrochemical cell lid inserts to rectangular cell can body, and the stage portion and low level of battery can body can be passed through
Putting face prevents that metallic foreign body invades into battery can body in the insertion, sputtering thing disperses into battery can body when welding
And to power-generating member illumination beam, and be better able to prevent metallic foreign body from invading into battery can body, sputter thing to electricity
Dispersed in the can body of pond.
Brief description of the drawings
(a) in Fig. 1 is completed in the battery can body involved by first embodiment of the battery cover in the present invention
The partial top view of battery can at the time of standard is inserted, (b) in Fig. 1 are the parts of the Ib-Ib lines of (a) in described Fig. 1
Amplification view, (c) in Fig. 1 are the enlarged partial sectional views of the Ic-Ic lines of (a) in described Fig. 1.
Fig. 2 is the outward appearance for the battery for possessing the battery can involved by the first embodiment of the present invention from oblique upper
The overall perspective view of outward appearance is shown.
Fig. 3 is to show to make Fig. 1 battery cover and the exploded partial perspective view of the appearance before the insertion of battery can body face.
Fig. 4 is the insertion guiding function in the lower face side corner with showing battery cover in (b) identical section in Fig. 1
Enlarged partial sectional view.
Fig. 5 is the direction of illumination and mesh of energy beam when showing welding in Fig. 1 in the section of the V-V lines in (a)
The enlarged partial sectional view of cursor position.
Fig. 6 is inserted completing standard of the battery cover in the battery can body involved by second embodiment of the present invention
The partial top view of battery can at the time of entering.
(a) in Fig. 7 is to complete battery cover in the battery can body involved by third embodiment of the present invention
Standard insertion at the time of battery can partial top view, (b) in Fig. 7 is the VIIb-VIIb lines of (a) in described Fig. 7
Enlarged partial sectional view.
Description of reference numerals
10 ... battery can bodies；11 ... long side side of sidewall portion；12 ... short side side of sidewall portion；13 ... corners；14th, 42 ... lower position faces
Portion；15 ... stage portions；20 ... battery covers；21 ... long side side surface parts；22 ... short brinks face；23 ... edged surface portions；24 ... lower surfaces
Side corner sections；25 ... lower surfaces holding section；41 ... planar portions；G ... gaps.
Embodiment
Below based on Fig. 1~Fig. 5, illustrate that first of an example as battery can and battery involved in the present invention is real
Apply mode.
As shown in Figure 2 and Figure 3, the battery is square closed type battery, possesses the metal system that outer shape is rectangular-shape
Battery can.
The battery can is by the battery can body 10 for being formed as having bottom square tube shape and the battery cover engaged with battery can body 10
20 are formed.
Battery cover 20 is inserted from above into the side for the square tube shape for being formed at the battery can body 10 relative to battery can body 10
The inner side of wall.The periphery of the side wall of the battery can body 10 of the battery and the battery cover 20 inserted on the inside of it quilt on circumferential complete cycle
Airtight welding.In addition, in the present invention, above-below direction is the rectilinear direction for instigating battery can main body 10 and the face of battery cover 20.
In addition, the circumferential side wall side of one week referred in the side at a right angle with above-below direction upwards about the square tube shape of battery can body 10
To.In (b) in Fig. 1, (c), Fig. 4, Fig. 5, above-below direction is consistent with the above-below direction of the present invention in figure.
Receiving space in battery can body 10 contains the power-generating member for omitting diagram, electrolyzer etc..In battery cover
20 are provided with positive and negative extreme sub 31 electrically connected with power-generating member, 31.For example, in the case of lithium rechargeable battery, make
For foregoing power-generating member, the convoluted electrode body of flat can be enumerated.In addition, as electrolyzer, for example, can enumerate non-
Aqueous electrolyte, gel, polymer.In battery cover 20 formed with safety valve, sealing liquid mouth.
As shown in Fig. 2 battery can body 10, battery cover 20 are respectively to have symmetry in length direction and width
Shape.In addition, in the present invention, battery can body 10, the length direction of battery cover 20 refer to respectively provide battery can body 10,
Two imaginary planes of the total length (length that the edge of the object orientation measurement at a right angle with above-below direction goes out) of battery cover 20 are just
To direction.In addition, width refers to the direction at a right angle with length direction.Generally, length direction and width are in electricity
There is no difference between pond can body 10 and battery cover 20.
Battery can body 10, battery cover 20 press processing and integrally formed by cold forging respectively.As battery can body 10, electricity
The material of pond lid 20, stainless steel, nickel-clad steel plate, aluminium alloy etc. can be enumerated, but in terms of processability, corrosion resistance, lightness
Consider, preferably aluminium alloy.Battery can body 10 for example by the metal pattern above and below the flat board of aluminium alloy is sandwiched and while applies
Crunch is configured with bottom tube-like while the drawing process of the plate deformation enabled aluminum alloy to.In addition, battery cover 20 for example passes through
Punch process is scaled off and formed from the plate stamping of aluminium alloy.
As shown in Figure 2 and Figure 3, battery can body 10 has a side wall, the side wall by a pair of long side side of sidewall portion 11,11, it is short a pair
Avris wall portion 12,12 and connection in the circumferential four corners 13 of adjacent long side side of sidewall portion 11 and short side side of sidewall portion 12,13,
13rd, 13 form.The side wall of battery can body 10 forms side and the opening of battery can body 10.
In addition, on the one hand, battery can body 10 is the bottom lock that diagram is continuously omitted by the lower end with the side wall
Shape.On the other hand, the upper end of the side wall of battery can body 10 is provided the height of the side wall by the bottom relative to omission diagram
End face form.The upper end of the side wall of battery can body 10 is all highly continuous with identical on circumferential complete cycle.
Long side side of sidewall portion 11 is with continuous along its length solid between the corner 13,13 for spreading all over two adjacent positions
Part.Short side side of sidewall portion 12, which has, spreads all between the corner 13,13 at two adjacent positions continuous solid part in the width direction
Point.Corner 13 is in the continuous solid section of arc-shaped with spreading all between adjacent long side side of sidewall portion 11 and short side side of sidewall portion 12.
The medial surface and lateral surface of long side side of sidewall portion 11 extend with above-below direction along its length respectively.
The lateral surface of short side side of sidewall portion 12 extends with above-below direction in the width direction.The lateral surface in corner 13 is in R planars (circle
Arc transition face).
Short side side of sidewall portion 12 and corner 13 medial surface formed with lower position face 14, lower position face 14 is under
Side is gradually to inner side increase short side side of sidewall portion 12, the thickness in corner 13.In addition, short side side of sidewall portion 12 medial surface formed with edge
The stage portion 15 that length direction protrudes.
On the one hand, stage portion 15 is the width center of the short side side of sidewall portion 12 in short side side of sidewall portion 12 and corner 13
The flat part that portion extends along its length.
On the other hand, lower position face 14 be in short side side of sidewall portion 12 and corner 13 positioned at circumferential top bar portion 15 with
Outer position (that is, the width two side portions in addition to the central portion of width of short side side of sidewall portion 12 and corner 13
Circumferential universe) place and in the vertical direction be located at less than stage portion 15 be positioned against lower section, the inclined rake in inside side.
Formed inclination angle is between lower position face 14 and lower direction, with moving closer to short side side of sidewall portion from corner 13 in the circumferential
12 and become larger.
In a pair of short edges side of sidewall portion 12 and the medial surface in four corners 13, from the continuous part upward of lower position face 14
It is vertically extending with continuously partly distinguishing upward from stage portion 15.
Battery cover 20 has a periphery, a pair of long side side surface parts 21 of this week cause, 21, a pair of short edges side surface part 22,22 and
Four edged surface portions 23 for connecting long side side surface part 21 adjacent in the circumferential and short brink face 22 are formed.
The side that battery cover 20 and battery can body 10 are provided on circumferential complete cycle of all cause battery covers 20 of battery cover 20
Chimeric lateral parts between wall are formed.
Long side side surface part 21 by regulation battery cover 20 and battery can body 10 in battery cover 20 long side side of sidewall portion 11 it
Between chimeric peripheral part form.A pair of long side side surface parts 21,21 are (whole for the length of the width of regulation battery cover 20
Width) position.
Short brink face 22 by regulation battery cover 20 and battery can body 10 in battery cover 20 short side side of sidewall portion 12 it
Between chimeric peripheral part form.A pair of short edges side surface part 22,22 is (complete for the length of the length direction of regulation battery cover 20
It is long) position.
Edged surface portion 23 is by the chimeric between the regulation battery cover 20 in battery cover 20 and the corner 13 of battery can body 10
Peripheral part is formed.
A pair of long side side surface parts 21,21, a pair of short edges side surface part 22,22 and four difference of edged surface portions 23 are along the vertical direction
Extension.Edged surface portion 23 is connected between adjacent long side side surface part 21 and short brink face 22, in R planars.
Between the periphery of battery cover 20 and the side wall of battery can body 10, chimeric gap is set with circumferential complete cycle.
The chimeric gap is set as below 0.05mm size in the longitudinal direction, is set as below 0.10mm in the direction of the width.
In the transportation process that battery cover 20 is inserted to the inner side of the side wall of battery can body 10, battery cover 20 is moved to battery can master
The top of body 10.Now, the target location of carrying is set to, the width of battery cover 20 and the center of length direction and electricity
The width of pond can body 10 and the central alignment of length direction, but dimensional tolerance, the positioning precision of handling device be present
The limit.Therefore, at the time of battery cover 20 is inserted into defined insertion extreme position from upper direction battery can main body 10, in electricity
Between the periphery of pond lid 20 and the side wall of battery can body 10, it is the chimeric of lateral deviation, gap can be produced.
In addition, as shown in (a) in Fig. 1~(c), Fig. 3, battery cover 20 have in the vertical direction with battery can body 10
14 overlapping lower face side corner 24 of lower position face and relative with the stage portion 15 of battery can body 10 in the vertical direction
Lower surface holding section 25.
In lower face side corner 24, from a pair of short edges side surface part 22,22 of battery cover 20 and four edged surface portions 23 remove with
Beyond the continuous part in lower surface holding section 25 (being the width middle body of each short brink face 22 in illustrated example)
Whole lower edge margin arranges to downside.Lower face side corner 24 with downward gradually and move closer to battery cover 20
The mode of central axial line tilts.In addition, the central axial line of battery cover 20 refers to the vacation for halving battery cover 20 along its length
Think the imaginary line in above-below direction that plane is intersected with the imaginary plane for halving battery cover 20 in the width direction.
As it was previously stated, as shown in double dot dash line in Fig. 4, inserted by inner side of the battery cover 20 to the side wall of battery can body 10
It is fashionable, when battery cover 20 deviate from defined position relative to battery can body 10, the lower face side corner 24 of battery cover 20
With the upper-end contact of the side wall of battery can body 10, and along the upper end slide, by inner side from battery cover 20 to the side wall guiding (ginseng
The arrow seen in the figure.), finally, as shown in solid in the figure, battery cover 20 is contained in the side of battery can body 10 completely
The inner side of wall.Such as diagrammatically shown, the parts precision and insertion of battery can body 10 and battery cover 20 of the double dot dash line in Fig. 4
The positioning precision of the assembly equipment of battery cover 20, relative in the longitudinal direction embedding of battery can body 10 and battery cover 20
Close the deficiency that seems for setting.Therefore, insertion guided bone of the lower face side corner 24 to battery cover 20 becomes important, but lower surface
As long as the configuration of side corner sections 24, shape can guide battery cover 20 to the inner side of the side wall of battery can body 10, suitably determine
.In addition, in figure the battery cover 20 of double dot dash line show it is issuable relative to battery can master under foregoing precision
The insert state that the side wall of body 10 deviates to greatest extent.
In addition, as shown in figure 3, in battery cover 20 formed with downward from the lower edge margin of a pair of long side side surface parts 21,21
Second lower face side corner 26 of side arrangement.Between the throughout lower surface side corner sections 24 of second lower face side corner 26 in the circumferential
Continuously, and have and lower face side corner identical inclination angle.Second lower face side corner 26 is to be used to avoid battery cover 20
Complex-shapedization part, therefore can suitably omit.Certainly, if foregoing parts precision, positioning precision are for width
Also seem deficiency for the chimeric setting in degree direction, then the second lower face side corner 26 also becomes important.
As shown in (a) in Fig. 1~(c), Fig. 3, lower surface holding section 25 is higher than lower face side corner in the vertical direction
24 position, be formed as the flat planar along the direction extension at a right angle with above-below direction.Lower surface holding section 25 is from each short side
The lower end of the width central portion of side surface part 22 extends along its length.Lower surface holding section 25 is open downwards, positioned at from
In the recess that the peripheral indentation of lower face side corner 24 and battery cover 20 is formed.Lower surface holding section 25 and corresponding stage portion 15
Abut in the vertical direction.By each lower surface holding section 25 with the abutting contact of corresponding stage portion 15, it is specified that battery cover
20 relative to battery can body 10 insertion extreme position.
Foregoing lower surface holding section 25 and lower face side corner 24 are as in the past, can pass through upper and lower grip block
The punch process of the metal pattern of material is formed, and the manufacture of battery cover 20 is not especially difficult.
In addition, lower surface holding section 25, which is set to size in length and width directions, is more than battery can body 10
Stage portion 15.The size difference of the two is set the size more than foregoing chimeric gap.This is in order in foregoing insertion
During battery cover 20, even if battery cover 20 deviates to greatest extent in the range of chimeric gap, the edge of stage portion 15 also will not
Contacted with lower face side corner 24, so as to prevent the generation of metallic foreign body.
As shown in (c) in Fig. 1, the angled manner in the lower face side corner 24 of battery cover 20 is, low in the vertical direction
In the position of lower surface holding section 25, lower face side corner 24 is set to be contacted with the lower position face 14 of battery can body 10.Such as Fig. 1
In (b) shown in, the contact of the two is set to, each lower surface holding section 25 in battery cover 20 in the vertical direction with
During the insertion limiting condition that the corresponding stage portion 15 of battery can body 10 abuts, in the whole circumferential scope of lower position face 14
Produce the contact.Particularly, in the circumferential scope of short side side of sidewall portion 12, lower position 14 contacts with lower face side corner 24 of face
Form contacts for face, the circumferential scope in corner 13, lower position face 14 and the contact form in lower face side corner 24 with
It is upwardly away from short side side of sidewall portion 12 week and is gradually varied to linear contact lay.
In addition, the rank between the lower face side corner 24 and lower surface holding section 25 of setting battery cover 20 in the vertical direction
Step difference in the vertical direction and lower position face between poor, battery can body 10 the lower position face 14 of ladder and stage portion 15
Portion 14 and lower face side corner 24 are respectively relative to the inclination angle of above-below direction, with when in foregoing insertion limiting condition,
The periphery of battery cover 20 and the upper end of the side wall of battery can body 10 are identical height on circumferential complete cycle.
If under foregoing insertion limiting condition, the stationary fixture illustrated with omission is in the width direction in the form of entire surface
A pair of long side side of sidewall portion 11,11 of battery can body 10 are clamped, then each long side side of sidewall portion 11 is in the width direction with the shape of entire surface
Formula is close to the corresponding long side side surface part 21 of battery cover 20.As a result, the side wall of battery can body 10 produces flat deformation,
Along with foregoing chimeric gap, battery cover 20 short brink face 22 and battery can body 10 short side side of sidewall portion 12 it
Between, between the corner 13 of the edged surface portion 23 of battery cover 20 and battery can body 10, may produce at a right angle with above-below direction
Gap g on direction.In addition, omit diagram, the seam between the edged surface portion 23 of battery cover 20 and the corner 13 of battery can body 10
Gap gs of the gap g between the short brink face 22 and the short side side of sidewall portion 12 of battery can body 10 no more than battery cover 20 is big
Small generation.
In gap g as generation and battery cover 20 each long side side surface part 21 length corresponding with battery can body 10
Avris wall portion 11 is close in the direction of the width and the upper end of the side wall of the periphery of battery cover 20 and battery can body 10 is in circumference
It is essentially under mutually level chimerism, by the periphery of battery cover 20 and the sidewall weld of battery can body 10 on complete cycle.
The foregoing lower position face 14 of battery can body 10, battery can body 10 a pair of short edges side of sidewall portion 12,12 with
And in four corners 13,13,13,13 when in foregoing chimerism can with corresponding short brink face 22 and angle
In the circumferential scope that gap g is produced between face 23, the inside inclined mode in side is that position is less than gap g in the vertical direction
Position, reach the lower section in the lower face side corner 24 of battery cover 20.
In addition, the foregoing stage portion 15 of battery can body 10, in a pair of short edges side of sidewall portion 12,12 of battery can body 10
And in four corners 13,13,13,13 when in foregoing chimerism can with corresponding short brink face 22 and
In the circumferential scope that gap g is produced between edged surface portion 23, the mode protruded inwardly is that present position is different from low in the circumferential
The position of position face 14, position are less than gap g position in the vertical direction, reach the lower surface holding section 25 of battery cover 20
Lower section.
Under foregoing chimerism, to the target location irradiation energy light beam LS of blacking in Fig. 5.As the energy light
Beam, laser beam, electron beam etc. can be enumerated.As laser, the CW such as optical fiber laser lasers, YAG laser can be enumerated
Isopulse laser.The irradiation is circumferentially advanced.Thus, connect the side wall of the periphery of battery cover 20 and battery can body 10 is airtight
Close.
The battery can is part as described above (referring to Fig. 1), and battery cover 20 is being inserted from upper direction battery can main body 10
When entering to the inner side of the side wall of battery can body 10, even if because parts precision, assembly device precision on the limit,
, also can be because from battery cover when the upper end of the lower face side corner 24 of battery cover 20 and the side wall of battery can body 10 forms friction
Upper end sliding contact of 20 periphery to the continuous skewed lower face side corner 24 in downside and the side wall of battery can body 10
Insertion guided bone and battery cover 20 is successfully directed to the inner side of the side wall of battery can body 10, therefore metal can be prevented
The generation of foreign matter and prevent that the climbing because of battery cover from causing manufacturing equipment to stop, correspondingly, additionally it is possible to avoid parts precision, group
The high precision int of the precision of manufacturing equipment is filled, and the chimeric between the side wall of the periphery of battery cover and battery can body is set to
It is small, so as to stablize weld strength.
In addition, the battery can be by the insertion guided bone in the lower face side corner 24 of battery cover 20 by chimeric setting
Must be small, therefore in the chimerism that the side wall in the periphery to battery cover 20 and battery can body 10 is welded, even if
Short brink face 22, edged surface portion 23 short side side of sidewall portion 12 corresponding with battery can body 10, corner 13 in battery cover 20 it
Between can produce gap g in the case of, gap g can be also set to it is small, so as to prevent in light beam irradiation battery can body 10
Power-generating member.
In addition, relative to battery can body 10, side wall of the battery can in battery cover 20 from upper direction battery can main body 10
Inner side insertion when, each lower surface holding section 25 stage portion 15 corresponding with battery can body 10 of battery cover 20 can be passed through
The contact abutted in the vertical direction, battery cover 20 is defined as suitable profit relative to the insertion extreme position of battery can body 10
The position welded with the light beam irradiation come from above.
In addition, the relevant battery can, because the lower face side corner 24 of battery cover 20 is less than lower surface holding section 25
Position contacts with the lower position face 14 of battery can body 10, therefore when inserting battery cover 20, even if battery cover 20 and battery
The upper-end contact of the side wall of can body 10, also battery cover 20 can be directed to battery can body 10 in the lower face side corner 24
After the inner side of side wall, produce the insertion formed by lower surface holding section 25 and stage portion 15 and limit.Therefore, it is not necessary to worry because of platform
The contact with lower face side corner 24 of rank portion 15 and produce metallic foreign body.
In addition, the battery can enables in particular to prevent the lower surface card of the stage portion 15 and battery cover 20 in battery can body 10
Between conjunction portion 25, in foregoing insertion battery cover 20 in caused metallic foreign body intrusion battery can body 10, and it is also outstanding
It can prevent that caused sputtering thing disperses into battery can body 10 during the welding under foregoing chimerism.
And then the battery can battery cover 20 by by regulation inserted the inner side of battery can body 10 at the time of, battery cover
20 lower face side corner 24 contacts in the position less than lower surface holding section 25 with the lower position face 14 of battery can body 10,
Close between the lower face side corner 24 and lower position face 14, therefore during this period, also can especially prevent in foregoing insertion
During battery cover 20 in caused metallic foreign body intrusion battery can body 10, and also it can especially prevent in foregoing chimerism
Under welding when it is caused sputtering thing disperse into battery can body 10.Therefore, the battery can is compared with previous example, more
It can prevent in metallic foreign body intrusion battery can body 10, sputtering thing disperses into battery can body 10.
In addition, the battery is more prevented in metallic foreign body intrusion battery can body 10, sputtering thing disperses to battery can body
In 10, therefore underproof generation can be prevented.
Illustrate second embodiment involved in the present invention based on Fig. 6.Hereafter illustrate with first embodiment emphatically not
Same point.
As shown in fig. 6, about the battery can involved by second embodiment, in battery can body formed with multiple stage portions
15th, 15 and battery cover with it is corresponding configuration be different from first embodiment formed with multiple lower surface holding sections 25, this point.
So, if in the direction of the width in a manner of being distributed, stage portion 15 is formed at multiple positions, then can more improve battery
The postural stability of lid 20.
Illustrate the 3rd embodiment involved in the present invention based on Fig. 7.Hereafter illustrate with first embodiment emphatically not
Same point.
Battery can involved by 3rd embodiment is in the side wall of battery can body in gap g lower section and in circumference
The upper position different from stage portion 15, formed with the planar portions 41 along the direction extension at a right angle with above-below direction, from the plane
Portion 41 is different from first embodiment formed with lower position face 42, this point.Planar portions 41 are set to width and its top
Gap g width it is equal.Metallic foreign body, sputtering thing are can to enter gap g less material, therefore are expected to remain in
In planar portions 41 of the gap g lower section along the direction extension at a right angle with above-below direction.Therefore, the battery can be further
Prevent the intrusion of metallic foreign body, sputter dispersing for thing.
In addition, in the battery can, with the formation of planar portions 41, the inclination angle of lower position face 42 is slightly changed.With
It, is in the insertion limiting condition abutted in lower surface holding section 25 with stage portion about 15, the lower surface side angle of battery cover
Portion 24 and lower position face 42 not substantial contact, but to be narrower than gap g interval and lower position 42 opposed, this point of face
Also different from first embodiment.This it is opposed interval by planar portions 41 and lower position face 42 the edge intersected between provide,
It is set to sufficiently smaller than gap g.Metallic foreign body, the small material that sputtering thing is the size that can enter gap g, so if with
Interval less than gap g makes lower face side corner 24 and lower position face 42 opposed, even if then metallic foreign body, sputtering thing are from plane
Fallen into portion 41 in the receiving space of battery can body, can also hang over lower face side corner 24, so as to prevent from invading, disperse.
Current disclosed embodiment is all to illustrate in all respects, is not considered as restricted contents.Therefore, it is of the invention
Scope shown by claims, and be intended to include whole changes in the implication and scope that are equal with the scope of claims
More.
For example, second embodiment and the 3rd embodiment can be combined.
Furthermore it is possible to which stage portion to be formed to each corner of battery can body, and lower position face is only formed at short side
Side of sidewall portion.Furthermore it is possible to the long side side of sidewall portion in battery can body adds stage portion, lower position face.In addition, though by low level
Put face whole or be formed partially in rake, but can also by lower position face be entirely formed to above-below direction into
The flat part at right angle.
In addition, the chimeric between battery cover and battery can body is not limited to set the situation in gap, can also incite somebody to action
Battery cover press-in is embedded in the inner side of the side wall of battery can body.Sum it up, in parts precision and used assembly
In the positioning precision of equipment, as long as in the range of can be by the lower face side corner guiding insertion battery cover of battery cover, just
The generation of metallic foreign body and the stopping of the manufacturing equipment caused by the climbing of battery cover can be prevented, therefore can be in the scope
It is interior, chimeric gap is set to it is as small as possible, or for the chimeric setting magnitude of interference.
Claims (5)
1. a kind of battery can, possesses：Battery can body (10) and the battery cover (20) engaged with the battery can body (10),
The battery can body (10) has side wall, and the side wall is by a pair of long side side of sidewall portion (11), a pair of short edges side of sidewall portion (12)
And four corner (13) structures for connecting the long side side of sidewall portion (11) adjacent in the circumferential and the short side side of sidewall portion (12)
Into,
The battery cover (20) has a periphery, a pair of long side side surface parts (21) of this week cause, a pair of short edges side surface part (22) and
The edged surface portion (23) of the adjacent long side side surface part (21) and the short brink facial (22) is formed in the circumferential for four connections,
Can the periphery of the battery cover (20) insert the battery can body (10) side wall inner side chimerism under,
By the periphery and the sidewall weld,
In the short side side of sidewall portion (12) and the corner (13) of the battery can body (10), at least one position shape
Into the stage portion (15) for having the lower section for reaching the battery cover (20), the position beyond the stage portion (15), in above-below direction
The upper position less than the stage portion (15), the lower position formed with the lower section for reaching the battery cover (20) is facial (14,42),
The battery cover (20) has：Lower face side corner (24), week of the lower face side corner (24) from the battery cover (20)
Edge arranges to downside, with the insertion, in the side wall of the lower face side corner (24) and the battery can body (10)
During upper-end contact, the lower face side corner (24) is slided along the upper end, and the battery cover (20) is guided to the inner side of the side wall；With
Lower surface holding section (25), its in the vertical direction with the stage portion (15) of the battery can body (10) relatively,
The stage portion (15) and the lower surface holding section (25) of the battery cover (20) by the battery can body (10)
Contact, determine the insertion extreme position that the battery cover (20) inserts to the battery can body (10),
The battery can is characterised by,
The lower surface holding section (25) of the battery cover (20) is formed at higher than the battery cover (20) in the vertical direction
The position of the lower face side corner (24),
The lower face side corner (24) of the battery cover (20) is formed as, and engages in the vertical direction less than the lower surface
The opening position in portion (25), contacted with the lower position facial (14,42) or opposed.
2. battery can according to claim 1, it is characterised in that
The lower position of the battery can body (10) facial (42) has planar portions (41), and the planar portions (41) are located at
The lower section in gap (g) caused by energy between the side wall of the battery can body (10) and the periphery of the battery cover (20), along with
Above-below direction direction extension at a right angle.
3. battery can according to claim 2, it is characterised in that
The lower face side corner (24) of the battery cover (20) be formed as with the interval less than the gap (g) with it is described low
Position face (42) is opposed.
4. battery can according to any one of claim 1 to 3, it is characterised in that
The lower surface holding section (25) of the battery cover (20) is formed as extending along with above-below direction direction at a right angle
Flat planar, and positioned at out of, the lower face side corner (24) and the peripheral indentation of the battery cover (20) recess, to
Lower section is open, and is set as that the size on length direction and width is more than the step of the battery can body (10)
Portion (15),
The lower face side corner (24) of the battery cover (20) from a pair of short edges side surface part (22) of the battery cover (20) and
Whole lower edge margins in addition to the continuous part of the lower surface holding section (25) in four edged surface portions (23) are downward
Side arranges.
A kind of 5. battery, it is characterised in that
Possesses the battery can any one of Claims 1-4.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-151882 | 2016-08-02 | ||
| JP2016151882A JP6085058B1 (en) | 2016-08-02 | 2016-08-02 | Battery can and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107681069A true CN107681069A (en) | 2018-02-09 |
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ID=58095274
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720946171.2U Active CN207082565U (en) | 2016-08-02 | 2017-07-31 | Battery can and battery |
| CN201710638357.6A Pending CN107681069A (en) | 2016-08-02 | 2017-07-31 | Battery can and battery |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720946171.2U Active CN207082565U (en) | 2016-08-02 | 2017-07-31 | Battery can and battery |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6085058B1 (en) |
| CN (2) | CN207082565U (en) |
| WO (1) | WO2018025549A1 (en) |
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|---|---|---|---|---|
| JP6879897B2 (en) * | 2017-12-21 | 2021-06-02 | プライムアースＥｖエナジー株式会社 | Secondary battery |
| KR102351248B1 (en) | 2018-12-10 | 2022-01-17 | 주식회사 엘지에너지솔루션 | Case for secondary battery, secondary battery and battery module |
| JP7444648B2 (en) | 2020-03-12 | 2024-03-06 | 大和製罐株式会社 | Battery case and its manufacturing method |
| AU2020450107B2 (en) * | 2020-05-27 | 2023-11-09 | Contemporary Amperex Technology Co., Limited | Secondary battery, battery module, and device using secondary battery as power source |
| EP3979400B1 (en) | 2020-08-17 | 2023-11-15 | Contemporary Amperex Technology Co., Limited | Battery cell, battery, and method and apparatus for preparing battery cell |
| CN117691269B (en) * | 2024-01-31 | 2024-04-16 | 蜂巢能源科技股份有限公司 | Battery core |
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| JP5652372B2 (en) * | 2011-10-24 | 2015-01-14 | トヨタ自動車株式会社 | Battery case |
| JP5480335B2 (en) * | 2012-06-28 | 2014-04-23 | トヨタ自動車株式会社 | Square battery and method for manufacturing square battery |
| US9716261B2 (en) * | 2013-07-12 | 2017-07-25 | Samsung Sdi Co., Ltd. | Rechargeable battery |
| JP6100192B2 (en) * | 2014-03-27 | 2017-03-22 | プライムアースＥｖエナジー株式会社 | Laser welding apparatus, laser welding method, and battery case |
-
2016
- 2016-08-02 JP JP2016151882A patent/JP6085058B1/en active Active
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2017
- 2017-06-30 WO PCT/JP2017/024196 patent/WO2018025549A1/en active Application Filing
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Also Published As
| Publication number | Publication date |
|---|---|
| CN207082565U (en) | 2018-03-09 |
| JP2018022586A (en) | 2018-02-08 |
| JP6085058B1 (en) | 2017-02-22 |
| WO2018025549A1 (en) | 2018-02-08 |
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Application publication date: 20180209 |