CN203071146U - Battery box and battery pack comprising same - Google Patents
Battery box and battery pack comprising same Download PDFInfo
- Publication number
- CN203071146U CN203071146U CN2011900005838U CN201190000583U CN203071146U CN 203071146 U CN203071146 U CN 203071146U CN 2011900005838 U CN2011900005838 U CN 2011900005838U CN 201190000583 U CN201190000583 U CN 201190000583U CN 203071146 U CN203071146 U CN 203071146U
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- Prior art keywords
- battery
- mentioned
- side wall
- wall portion
- battery case
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
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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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model provides a battery box and a battery pack comprising the battery box. In the battery box in which a battery unit composed of a plurality of batteries is stored, a minitype structure with low cost is utilized, a structure that poor influence on output performance of the battery pack is avoided and the batteries can be limited to move in the battery box is realized. The battery box (2) comprises a cylindrical side wall part (22), wherein a storage space (24) for storing the battery unit (3) in a state that axial lines are parallel to a bottom surface part (21) is formed on the side wall part; the battery unit is formed by overlapping the plurality of batteries (11) in a mode that the axial lines are parallel to each other; and a plurality of ribs (23) (protruding parts), integrated with the inner surface of the side wall part, which protrude toward the inner side of the storage space are arranged at positions corresponding to the end parts of the axial line directions of the battery on the inner surface of the side wall part opposite to the end parts of the axial line directions of the batteries in the side wall part in a mode that the protruding end part is positioned on a plane orthogonal to the axial lines of the batteries.
Description
Technical field
The utility model relates to the battery case of a plurality of batteries that are electrically connected mutually for folding and unfolding and the battery pack that constitutes by folding and unfolding battery in this battery case.
Background technology
In the past, known have a structure that forms battery pack by a plurality of battery folding and unfoldings that will be electrically connected mutually in battery case.As this structure, for example shown in TOHKEMY 2006-134800 communique, known have a plurality of batteries of folding and unfolding and the structure that is configured in this battery spacer each other in plastic main body box (electromagnetism box).In this structure, in order mutually to be electrically connected a plurality of batteries each other, at the end face of a plurality of batteries wire guide plate is installed.
At this, in the occasion of plastics as described above main body box processed, owing to need so-called draft angle when utilizing the shaping mould moulding, therefore usually, the box side is more to tilt towards the vertical line of the offside mode in the outside of box open side with respect to the box bottom surface.Therefore, between main body box and battery, produce more towards the more big gap of box open side.
In the structure of above-mentioned TOHKEMY 2006-134800 communique, one-body moldedly stop up this gap at the gap plate that is configured on the battery spacer to each other, the movement of limit battery in main body box by utilizing.
Yet, in the occasion of the such structure of above-mentioned TOHKEMY 2006-134800 communique, in order to ensure the intensity of gap plate, need this gap plate to have to a certain degree wall thickness, when increasing the wall thickness of gap plate, correspondingly, battery pack is whole to maximize.
In addition, occasion in the such structure of above-mentioned TOHKEMY 2006-134800 communique, owing to be configured in integrally formed gap plate on the battery spacer to each other, so the configuration of this gap plate is owing to the configuration and the shape that connect battery wire guide plate each other are restricted.That is, owing to need utilize wire guide plate to be connected to each other the axis direction end of a plurality of batteries, therefore need at spacer gap plate be set in the mode of avoiding this wire guide plate.Like this, gap plate complex-shaped, and be difficult to make the suitableeest shape for the movement of limit battery of being shaped as of this gap plate.In other words, be the occasion of the suitableeest shape make gap plate for moving of limit battery, the shape of wire guide plate is restricted on the contrary, therefore has the possibility that the shape of this wire guide plate can't be formed the shape that is suitable for CURRENT DISTRIBUTION.
In addition, the occasion in the such structure of above-mentioned patent documentation 1 when making battery stack more than three grades, owing to can't utilize a profiled part to constitute spacer and gap plate, therefore need be made of a plurality of parts.If like this, then the manufacturing cost of moulding product increases.
The utility model content
Therefore, in the utility model, its purpose is, in the battery case of the battery unit that folding and unfolding is made of the battery of a plurality of columns, utilizes small-sized and low-cost configuration to realize can not exerting an influence to the output performance of battery pack and structure that can the movement of limit battery in battery case.
The battery case of an execution mode of the present utility model possesses the side wall portion that forms the tubular that extends at cylinder axis direction, above-mentioned side wall portion form can be under the state relative with above-mentioned side wall portion of the both ends of the axis direction of above-mentioned battery the folding and unfolding space of folding and unfolding battery unit, this battery unit by with axis each other parallel mode be layered in and be electrically connected this battery mutually under the state of a plurality of batteries of the column that axis direction extends and constitute each other, the position corresponding with the axis direction end of this battery on the inner surface of the side wall portion relative with the axis direction end of above-mentioned battery in above-mentioned side wall portion is positioned at mode on the axis plane orthogonal with above-mentioned battery at the integrally formed side-prominent a plurality of protuberances (first structure) towards above-mentioned folding and unfolding space of the inner surface of above-mentioned side wall portion with jag portion.
Utilize above structure, the battery unit utilization of folding and unfolding in battery case is integrally formed in protuberance on the inner surface of side wall portion of this battery case and is limited in movement in this battery case.And, form protuberance by the mode that is positioned at jag portion on the axis plane orthogonal with battery, dispose the occasion of a plurality of batteries in the mode that is same position at this axis direction with the axis direction end, the gap between the outstanding end of the end face of each battery of battery unit and this protuberance is even.Therefore, in this occasion, can prevent that the amount of movement of each battery in battery case from producing fluctuation.Usually, owing to utilize link to be electrically connected the axis direction end of each battery of battery unit, therefore by in this structure, using said structure, can prevent from connecting material etc. and sustain damage owing to the fluctuation of the amount of movement of each battery.
In addition, in said structure, owing at the inner surface of the side wall portion of battery case protuberance is set, therefore can design shape or the configuration of the axis direction end link each other that is electrically connected battery freely.In addition since on the inner surface of the side wall portion of battery case integrally formed protuberance, therefore can utilize low-cost and small-sized structure to realize the structure of the movement of limit battery.
Therefore, utilize said structure, can realize can not exerting an influence to the output performance of battery pack and the battery case of the movement of limit battery with low-cost and small-sized structure.
In above-mentioned first structure, above-mentioned protuberance arranges (second structure) in the mode of the end parts parallel of the above-mentioned axis direction of outstanding residing above-mentioned plane, end and above-mentioned battery unit.Thus, because the interval of the end of the axis direction of the battery of battery unit and a plurality of protuberances is even, therefore can utilize the movement of limit battery unit more reliably of this protuberance.That is, owing to can utilize said structure to suppress the fluctuation of movement of end of the battery axis direction of battery unit, therefore can prevent this battery unit because the fluctuation of the movement of the interior battery of battery unit sustains damage.
In above-mentioned first or second structure, in the both ends of the cylinder axis direction of above-mentioned side wall portion, at least one side's end forms peristome, above-mentioned side wall portion tilts in inner surface is positioned at the outside gradually to an above-mentioned side's end from the opposing party's end mode, and compare with above-mentioned plane, above-mentioned inner surface is with respect to the inclination big (the 3rd structure) of above-mentioned tube axle.
By like this, can only form protuberance by special method, utilize the formation side wall portions such as shaping mould with draft angle.Therefore, owing to need not form battery case integral body with special method, therefore can easily form battery case.
In any structure of above-mentioned first～the 3rd structure, above-mentioned protuberance is to limit the inner surface (the 4th structure) that mode below the setting of movement of this battery is located at above-mentioned side wall portion with the distance of the part of outstanding end and the side wall portion relative with this protuberance, with the difference of the length of the axis direction of above-mentioned battery.
Thus, can utilize the protuberance movement of limit battery more reliably of the inner surface that is located at side wall portion.
In any structure of above-mentioned first～the 4th structure, above-mentioned protuberance is located at (the 5th structure) on the position relative to each other at the inner surface of relative above-mentioned side wall portion.Thus, the battery unit utilization of folding and unfolding in battery case is located at protuberance restriction on the position relative to each other to the movement of the axis direction of battery.Therefore, can utilize said structure to be limited in the movement of the battery in the battery case more reliably.
In above-mentioned the 5th structure, above-mentioned protuberance is located at respect to the residing parallel plane mode in the outstanding end that is located at the locational protuberance relative with this protuberance with outstanding residing above-mentioned plane, end on the inner surface of above-mentioned side wall portion (the 6th structure).
By like this, because it is even at the both ends of the axis direction of the battery of this battery unit with the interval of the outstanding end of protuberance to be configured in each battery of the battery unit in the battery case, therefore can be suppressed at the fluctuation of the movement of the interior battery of battery unit.
In any structure of above-mentioned first～the 6th structure, in the both ends of the cylinder axis direction of above-mentioned side wall portion, at least one side's end is formed with peristome, above-mentioned protuberance forms the rib shape (the 7th structure) that extends along above-mentioned cylinder axis direction at the inner surface of above-mentioned side wall portion.
By this structure, the protuberance that is made as the rib shape at the inner surface of the side wall portion of battery case works as the reinforcing rib of this side wall portion, realizes that therefore the intensity of battery case improves.
In any structure of above-mentioned first～the 7th structure, have in the both ends of the cylinder axis direction that covers above-mentioned side wall portion, the sealing board of the opposing party's end, above-mentioned sealing board and above-mentioned side wall portion integrally formed (the 8th structure).Thus, can easily form the battery case with side wall portion and sealing board.Therefore, can utilize side wall portion and sealing board to cover the battery unit of folding and unfolding in battery case at wide region more.
The battery pack of an execution mode of the present utility model is by constituting (the 9th structure) in the battery unit folding and unfolding battery case that any structure is put down in writing in first～the 8th structure.Thus, can be realized can not bringing the battery pack that influences and can be limited in the movement of the battery in the battery case to output performance by low-cost and small-sized structure.
In above-mentioned the 9th structure, above-mentioned battery unit also possesses the insulating thin (the tenth structure) that arranges for the link that is electrically connected battery end each other, in the mode of the end that covers above-mentioned link and above-mentioned battery.Thus, can utilize insulating thin protection link, and can prevent the short circuit each other of this link.And, can utilize insulating thin to alleviate the impact that in battery case, is applied on the battery unit.
Battery case according to an execution mode of the present utility model, the position corresponding with the axis direction end of battery on the inner surface of side wall portion is positioned at mode and the integrally formed a plurality of protuberances of above-mentioned inner surface on the axis plane orthogonal with battery with jag portion.Thus, can utilize protuberance to be limited in the movement of the battery in the battery case.And, by forming protuberance at battery case, owing to the shape of the link that can not be subjected to battery unit and the restriction of configuration, therefore can not bring influence to the output performance of battery pack.In addition, because above-mentioned protuberance is integrally formed on the side wall portion, therefore can utilize low-cost and small-sized structure to constitute the battery pack of the movement that can be limited in the battery in the battery case.
Description of drawings
Fig. 1 is the stereogram of schematic configuration of the battery pack of expression execution mode one.
Fig. 2 is the stereogram of the schematic configuration of expression battery case.
Fig. 3 is the stereogram of the schematic configuration of expression battery unit.
Fig. 4 is the exploded perspective view of battery unit.
Fig. 5 is the figure of the schematic configuration of expression battery and spacer.
Fig. 6 is the VI-VI line cutaway view of Fig. 1.
Fig. 7 schematically is illustrated in the occasion of using angled pin to form the rib of battery case, the figure of the pattern during the rib moulding.
Fig. 8 schematically is illustrated in the occasion of using angled pin to form the rib of battery case, make moulding the figure of pattern of the battery case demoulding.
Fig. 9 is the figure of schematic configuration occasion, shaping mould, core and interior slide cores of the expression rib that is used to form battery case.
Figure 10 schematically is illustrated in to use interior slide cores to form the occasion of the rib of battery case, the figure of the pattern during the rib moulding.
Figure 11 schematically is illustrated in to use interior slide cores to form the occasion of the rib of battery case, the figure of the pattern when after making the battery case moulding shaping mould being moved.
Figure 12 schematically is illustrated in to use interior slide cores to form the occasion of the rib of battery case, makes battery case from the figure of the pattern of the shaping mould demoulding.
Figure 13 is the stereogram of schematic configuration of battery case of the battery pack of expression execution mode two.
Figure 14 is illustrated in the figure that the position of the occasion rib of observing battery pack from the side and battery concerns.
Figure 15 is the figure of summary shape of rib of the battery case of other execution modes of expression.
Figure 16 is the figure of summary shape of rib of the battery case of other execution modes of expression.
Figure 17 is the figure of summary shape of protuberance of the battery case of other execution modes of expression.
Embodiment
Below, explain execution mode of the present utility model with reference to accompanying drawing.Identical among the figure or considerable part are marked identical symbol and omit its explanation.
[execution mode one]
(overall structure)
Fig. 1 is the figure of schematic configuration of the battery pack 1 of expression execution mode one of the present utility model.This battery pack 1 constitutes by the battery unit 3 that a plurality of roughly columned batteries 11 that are connected electrically in axis direction mutually and extend constitute by folding and unfolding in the battery case 2 of the case shape of an opening.This battery pack 1 for example is used for the power supply of the power supply of electric tool or used for electric vehicle power supply, portable equipment etc.
As shown in Figure 1, battery unit 3 folding and unfoldings are in battery case 2.As shown in Figures 3 and 4, battery unit 3 possesses spacer 31 for a plurality of batteries 11 of folding and unfolding, the folding and unfolding end thin slice 32～36(link each other that is used for being electrically connected battery 11 in this spacer 31), from the top of this thin slice 32～36 insulating thin 37 of the both ends of the surface of clad battery 11 respectively.
As shown in Figure 4, in this embodiment, be provided with three grades the 31a of hole portion that arranges in the horizontal up and down at spacer 31.Thus, can with axis L mode parallel to each other arrange in the horizontal and stacked three grades of a plurality of battery 11(with reference to Fig. 5).And in the present embodiment, in spacer 31, the 31a of hole portion of neighbouring level forms the position of departing from the horizontal.Thus, can try one's best arranges a plurality of hole 31a of portion thick and fast, can realize miniaturization as spacer 31 integral body.
In addition, the 31a of hole portion that is located on the spacer 31 can not be three grades as the present embodiment, can be one-level or two-stage, more than the level Four.In addition, can not make the 31a of hole portion of neighbouring level is the position of departing from the horizontal, can also be made as be arranged above and below.
In addition, in the present embodiment, spacer 31 be provided with can folding and unfolding the 31a of hole portion of battery 11, constitute the side integral body of utilizing these spacer 31 clad batteries 11, but also spacer can be formed the shape of a part of the side of a clad battery 11.That is, spacer can be the structure of a part of circumferencial direction of the side of a clad battery 11, also can be the structure of a part of axial direction that only covers the side of this battery 11.
In addition, thin slice 32～36 then is not limited to shape shown in Figure 4 if can be electrically connected the structure of a plurality of batteries 11 mutually, can be arbitrary shape.
Insulating thin 37 for example is made of difficulty combustion staple fibre paper.As shown in Figure 4, this insulating thin 37 is installed on the thin slice 32～36 in the mode at the both ends that cover a plurality of batteries 11 respectively.In addition, insulating thin 37 is installed on the spacer 31 in the mode at the both ends of the opening that covers this spacer 31 respectively.In addition, insulating thin 37 utilizes adhesive securement on spacer 31, battery 11 and thin slice 32～36.Thus, constitute battery unit 3 shown in Figure 3.
(structure of battery case)
As mentioned above, battery case 2 is made of the resinous parts that utilize shaping mould to form, and forms the shape of an opening of cuboid.That is, as shown in Figure 2, battery case 2 have in overlooking be OBL bottom surface sections 21(sealing board roughly), be integrally formed in the side wall portion 22 of the outer circumferential side of this bottom surface sections 21.This side wall portion 22 forms the square tube shape that extends at cylinder axis direction, and bottom surface sections 21 is located at the end of the cylinder axis direction of side wall portion 22.Side wall portion 22 has a pair of long side side wall portion 22a that is located at the long side of OBL bottom surface sections 21 roughly, the pair of short edges side side wall portion 22b that is located at the short brink of this bottom surface sections 21.
Thus, in battery case 2 formation can be under the relative state of the axis direction both ends of battery 11 and side wall portion 22 the folding and unfolding space 24 of the above-mentioned battery unit 3 of folding and unfolding.In addition, in battery case 2, utilize the side of side wall portion 22 in the both ends of the cylinder axis direction of this side wall portion 22 end to form box peristome 2a(peristome).
The side wall portion 22 of battery case 2 is in order can successfully battery case 2 to be taken off from this shaping mould when forming battery case 2 by shaping mould and be provided with so-called draft angle.That is, long side side wall portion 22a and short brink side wall portion 22b tilt in the mode of toppling over to the outside of battery case 2 than the position that becomes the right angle with these bottom surface sections 21 angulations with respect to bottom surface sections 21.That is, the inner surface of long side side wall portion 22a and short brink side wall portion 22b is positioned at the outside gradually from the other end of side wall portion 22 towards an end.The angle of inclination (draft angle) of long side side wall portion 22a and short brink side wall portion 22b is the angle of about 1 degree with respect to the vertical line of bottom surface sections 21 for example.In addition, the draft angle of battery case 2 is so long as the angle that can successfully battery case 2 be taken off from shaping mould then can be the angle beyond 1 degree.
Be provided with a plurality of rib 23(protuberances that depth direction at this battery case 2 (from the direction of box peristome 2a side direction bottom surface sections 21 sides of battery case 2, the above-below direction Fig. 2) extends at the inner surface of the long side side wall portion 22a of battery case 2).That is, the cylinder axis direction that forms at side wall portion 22 of these ribs 23 extends.The mode of these ribs 23 on the plane A that is positioned at jag portion on the long side side wall portion 22a with the axis L-orthogonal of battery 11 is made as from bottom surface sections 21 side direction box peristome 2a sides extends (with reference to Fig. 6).As shown in Figure 6, this plane A is the face with the end parts parallel of the axis direction of the battery 11 of battery unit 3.Thus, owing to can utilize rib 23 end of support cells unit 3 equably, therefore can support the battery 11 in this battery unit 3 equably.Therefore, even impact or vibration etc. is applied on the battery pack 1, can prevent that also battery 11 is relatively mobile and this battery unit 3 is sustained damage in battery unit 3.
The thickness of rib 23 is preferably below 1/2 of thickness of the long side side wall portion 22a of battery case 2.In addition, the length of rib 23 can be from the outstanding length of long side side wall portion 22a, also can be the length of lacking to the length of box peristome 2a side than from bottom surface sections 21 sides of this long side side wall portion 22a.
In addition, as shown in Figure 2, these ribs 23 are located at the relative position on a pair of long side side wall portion 22a.Therefore, the rib 23 that is respectively formed on a pair of long side side wall portion 22a of this battery case 2 of the battery unit 3 of folding and unfolding in battery case 2 sandwiches.Thus, battery unit 3 utilization is located at rib 23 on this battery case 2 and is limited in the movement to long side side wall portion 22a side in the battery case 2.The movement of axis direction that can limit battery 11 in addition, in the present embodiment, rib 23 is located at relative position on a pair of long side side wall portion 22a, but is not limited thereto, as long as also can not be arranged on rib 23 on the position relative to each other.
As Fig. 2 and shown in Figure 6, the mode that each rib 23 vertically extends to the box peristome 2a side of this battery case 2 with respect to bottom surface sections 21 with the outstanding end of the inboard that is positioned at battery case 2 is formed on the long side side wall portion 22a.That is, to form the outstanding end draft angle of battery case 2 inboards be zero to rib 23.At this, long side side wall portion 22a tilts towards the mode that box peristome 2a side is positioned at the outside gradually from bottom surface sections 21 sides with inner surface.That is, the inner surface of long side side wall portion 22a tilts with respect to the vertical line of bottom surface sections 21.
According to said structure, more the open side to battery case 2 is more big apart from the projecting height of this long side side wall portion 22a with respect to the long side side wall portion 22a with draft angle for each rib 23.And as shown in Figure 6, the residing plane A in rib 23 outstanding end each other that is formed on a pair of long side side wall portion 22a is parallel.Therefore, folding and unfolding in battery case 2 battery unit 3 and be formed on interval between the outstanding end of the rib 23 on the long side side wall portion 22a of this battery case 2 on the depth direction of this battery case 2 evenly.Thus, the interval of the outstanding end of the end of the axis direction of the battery 11 of formation battery unit 3 and rib 23 is also even on the depth direction of battery case 2.In addition, in Fig. 6, the structure of battery unit 3 is simplified and represent, and make rib 23 than actual size the earth diagram.
In addition, each rib 23 is to utilize the mode below the setting of movement of these each rib 23 limit battery 11 to be located on the inner surface of long side side wall portion 22a with the difference of outstanding interval each other, end and the length of the axis direction of battery 11.At this, the afore mentioned rules value is can be when vibration or impact when being applied on the battery pack 1, and the batteries 11 in the battery case 2 move and make the gap of the degree that battery unit 3 sustains damage.In addition, the afore mentioned rules value is so long as the value that can utilize the bending of the side wall portion 22a of battery case 2 to absorb, can be zero following, be that battery unit 3 is with respect to the rib 23 bulged-in values of battery case 2.
Specifically, the afore mentioned rules value is the value that adds the thickness of the parts (in the present embodiment, being insulating thin 37 and thin slice 32～36) on the axis direction end that is configured in battery 11 in battery unit 3 in the battery unit of obtaining as described later 3 and the gap of rib 23.In addition, because the thickness of these insulating thins 37 and thin slice 32～36 is fully little with respect to the length of the axis direction of battery 11, therefore also can not consider the tolerance of these thickness.
Stipulate as described below in gap between above-mentioned battery unit 3 and the rib 23.
At first, the outstanding end size to each other of the rib 23 of the battery case 2 big occasion of length than the battery axis direction of battery unit 3 is described.
When the length with the battery axis direction of battery unit 3 is made as P, the dimensional tolerance of this length P is made as a%, when the dimensional tolerance that is located at the interval each other, outstanding end of the rib 23 on the long side side wall portion 22a of battery case 2 was made as b%, battery unit 3 had following relation with the gap Y of battery 11 with respect to P, a, b.
P×︱a-b︱≤Y≤P×（a+b）
Then, when the outstanding end of considering rib 23 has draft angle θ, during occasion that battery unit 3 is made of multistage battery 11, shown between battery unit 3 and the rib 23 of height H of central shaft of battery 11 the gap Z by above-mentioned draft angle θ generation by following formula.
Z=2×H×tanθ
By adding this Z at above-mentioned Y, can obtain the battery unit 3 of height H of central shaft of battery 11 and the gap between the rib 23.
At this, there is not the occasion of draft angle in the outstanding end of the rib 23 of battery case 2, the battery unit 3 of the height H of the central shaft of battery 11 and the maximum in the gap between the rib 23 be because Z=0 and Y be maximum, so be
Y=P×（a+b）
On the other hand, have the occasion of draft angle at the rib 23 of battery case 2, therefore the battery unit 3 of the height H of the central shaft of battery 11 and the minimum value in the gap between the rib 23 owing to Y=0 are
Z=2×H×tanθ。
For example, P=65mm, a=b=0.5%, with battery stacked two-stage on above-below direction of diameter 18.3mm, and to make the thickness of spacer be 1mm, H=29.45mm.In addition, making the draft angle of the outstanding end of rib 23 for example is 0.5 degree.In the occasion of this condition, above-mentioned Y, Z are 0≤Y≤0.62mm, Z=0.51mm.
Thus, under these conditions, do not have the occasion of draft angle in the outstanding end of rib 23, the battery unit 3 of the height H of the axis of battery 11 and the gap between the rib 23 are
0≤Y≤0.62mm
On the other hand, under these conditions, when the outstanding end at rib 23 had the draft angle of 0.5 degree, the battery unit 3 of the height H of the axis of battery 11 and the gap between the rib 23 were
0.62≤Y+Z≤1.13mm
In addition, because the tolerance of H and θ is little to the Z influence, for about 0.01mm, therefore can not consider.
In the scope of 0.62≤Y+Z≤1.13mm, because battery unit 3 is mobile in battery case 2, so this battery unit 3 has the possibility that sustains damage.Thus, consider safety, in the occasion of above-mentioned condition, the gap between preferred battery unit 3 and the rib 23 is below the 0.5mm.In addition, as mentioned above, when the occasion that does not have draft angle in the outstanding end of rib 23, gap between battery unit 3 and the rib 23 is 0.62mm, by reducing a, b or make the interval each other, outstanding end of rib 23 of battery case 2 shorter than P, can make the gap between battery unit 3 and the rib 23 is below the 0.5mm.
Then, the outstanding end size to each other of the rib 23 of the battery case 2 little occasion of length than the battery axis direction of battery unit 3 is described.In this occasion, the gap between battery unit 3 and the rib 23 is the scope of battery case 2 energy strains preferably, but such as described below, so long as expand by utilizing heat to make in the battery case 2, can the scope of folding and unfolding battery unit 3 get final product in this battery case 2.
When the length of the battery axis direction of coefficient of linear expansion α, room temperature T1, heating-up temperature T2 and the battery unit 3 of the material that will constitute battery case 2 was P, setting d was by following formula performance.
d=α×（T2-T1）×P
For example, consider to use axis direction length to be the battery of 65mm, and constituted the occasion of battery case 2 by polycarbonate resin.Make coefficient of linear expansion α=6.6 * 10 of polycarbonate resin
-5, make battery case 2 rise to 100 when spending from room temperature 30 degree, d=0.3mm.
Therefore, in the outstanding end size to each other of the rib 23 of the battery case 2 little occasion of length than the battery axis direction of battery unit 3, the length direction both ends that are difficult to be out of shape in battery case 2, the interval each other, outstanding end of preferred rib 23 is below the 0.3mm with the difference of the length of the battery axis direction of battery unit 2.
Yet, as the long side side wall portion 22a of the battery case 2 of moulding product owing to have length direction middle body crooked tendency to the inside, therefore the interval each other, outstanding end that is located at the rib 23 on a pair of long side side wall portion 22a is compared with the length direction end side of long side side wall portion 22a, and length direction central portion side is little.With respect to this, the length direction middle body of the long side side wall portion 22a of battery case 2 can easily be pushed bending as described above open on the direction of returning.Therefore, the interval each other, outstanding end of rib 23 with the difference of the length of the battery axis direction of battery unit 2 so long as below the 0.3mm as above-mentioned result of calculation (producing the result of calculation at crooked length direction both ends), then no problem.
According to more than, if the interval each other, outstanding end of rib 23 is scope as described above (0.3mm is following) with the difference of the length of the battery axis direction of battery unit 2, even then can't be with the occasion of battery unit 3 folding and unfoldings in this battery case 2 owing to the strain of battery case 2, rise and expansion by the temperature that makes battery case 2, can be with battery unit 3 folding and unfoldings in this battery case 2.
In addition, in the present embodiment, owing in the position relative to each other of a pair of long side side wall portion 22a rib 23 is set, the interval each other, outstanding end of therefore using rib 23 is poor with the length of the axis direction of battery 11.When in the position relative to each other rib 23 not being set, as long as the length of the axis direction of the interval of the outstanding end of using rib 23 and the inner surface of relative long side side wall portion 22a and battery 11 is poor.That is, in battery case 2, as long as use part each other the interval relative with the axis direction end of battery 11.
Thus, be the occasion of the structure of stacked multistage a plurality of batteries 11 at battery unit 3, under with the state of battery unit 3 folding and unfoldings in battery case 2, the interval of the axis direction end of battery 11 and the outstanding end of rib 23 is even on the battery stack direction of battery unit 3.Thus, even vibration or impact the occasion be applied on the battery pack 1 because the rib 23 that can utilize battery case 2 each battery 11 of support cells unit 3 equably, therefore can prevent this battery 11 displacement relatively and thin slice 32～36 is sustained damage.
In addition, utilize said structure, below the interval each other, outstanding end of rib 23 and the difference of the length of the battery axis direction of battery unit 3 setting for the movement that can utilize these each rib 23 limit battery unit 3.That is can be to utilize the mode below the setting of movement of these each rib 23 limit battery unit 3 to be located on the inner surface of long side side wall portion 22a with the difference of outstanding interval each other, end and the length of the battery axis direction of battery unit 3 with each rib 23.Thus, under the state of battery unit 3 folding and unfoldings in battery case 2 with stacked a plurality of battery 11 multistagely, the interval between this battery unit 3 and the rib 23 is even in the battery stack direction of battery unit 3.Thus, even vibration or impact the occasion be applied on the battery pack 1, the rib 23 that also can utilize battery case 2 is support cells unit 3 integral body equably, therefore can prevent battery 11 relative displacement and thin slice 32～36 is sustained damage in this battery unit 3.
At this, the afore mentioned rules value is can or not impact in vibration when being applied on the battery pack 1, and the battery units 3 in the battery case 2 move and the gap of the degree that sustains damage.In addition, the afore mentioned rules value is so long as the value that can utilize the bending of the side wall portion 22 of battery case 2 to absorb, can be zero following, be that battery unit 3 is with respect to the rib 23 bulged-in values of battery case 2.
The battery unit 3 of afore mentioned rules value when obtaining the afore mentioned rules value equates with the gap of rib 23.Above-mentioned consideration method when thus, the afore mentioned rules value is defined as with the gap of obtaining battery unit 3 and rib 23 is identical.
In addition, even the interval each other, outstanding end of above-mentioned rib 23 and the difference of the length of the battery axis direction of battery unit 3 also can be used the outstanding end of rib 23 and the interval of relative part when not being provided with rib 23 in the position relative to each other.
In addition, each rib 23 mode at center of being positioned at the axis direction end of each battery 11 in this battery unit 3 under with the state of battery unit 3 folding and unfoldings in battery case 2 with the part with rib 23 arranges.That is, a plurality of ribs 23 supercentral mode of axis direction end of all being positioned at the battery 11 of battery unit 3 with any rib 23 is formed on the long side side wall portion 22a of battery case 2.Thus, can utilize rib 23 displacement of each battery 11 of the battery unit 3 in the limit battery box 2 more reliably.
In addition, need rib 23 be set in the mode at center that any of rib 23 all is positioned at the axis direction end of battery 11, if for preventing because vibration or the degree of impacting the damage that produces can have the part that rib 23 is not set.In addition, consider that the mouldability of battery case 2 or battery unit 3 with respect to the assembling operation of this battery case 2 etc., can arrange R portion or chamfered section etc. in the outstanding end of each rib 23.
As described above, by at battery case 2 rib 23 to be set, be limited in the structure of the movement of the battery unit 3 in this battery case 2, can design the shape of the thin slice 32～36 of this battery unit 3 freely, and can make the spacer 31 of this battery unit 3 be simple structure.Therefore, utilize said structure, realize the reduction of the manufacturing cost of the spacer 31 of battery unit 3 and thin slice 32～36, and can prevent the maximization of battery pack 1 integral body.And, utilizing said structure, because the shape of thin slice 32～36 can be designed to be suitable for the shape of CURRENT DISTRIBUTION, therefore also can prevent from the output performance of battery pack 1 is brought influence.
In addition, in the present embodiment, the draft angle that makes the outstanding end of rib 23 is zero, but this draft angle is zero meaning for comparing to make the moulding product from the little draft angle of the draft angle of shaping mould demoulding necessity successfully by the shaping mould moulding time.That is, the draft angle null representation can't the such draft angle of the demoulding when not weakening when handling then, may not be zero.At length will be in aftermentioned, but as present embodiment, by only forming rib 23 by draft angle zero, can guarantee the mouldability of battery case 2, can form the rib of the movement that can suppress battery unit 3 effectively.
In addition, the outstanding end of rib 23 is extended in the direction vertical with bottom surface sections 21 and is also comprised and allow when vibration or impact when being applied on the battery pack 1, can not make the tendency of displacement of the battery 11 of the degree that this battery unit 3 sustains damage owing to the displacement of the interior battery 11 of battery unit 3.
In addition, the outstanding end of rib 23 almost parallel is each other represented when in rib 23 occasion of setting battery unit 3 each other, even vibration or impact are applied on the battery pack 1, this battery unit 3 also can not concern the position to long side side wall portion 22a side shifting in battery case 2.Therefore, when impact is applied to occasion on the battery pack 1, if battery unit 3 mobile scope in battery case 2 not, then the outstanding end of rib 23 can be not exclusively parallel, can tilt a little with respect to the vertical line of bottom surface sections 21.
Similarly, the interval between the outstanding end of battery unit 3 and rib 23 evenly is also included within vibration or impacts when being applied on the battery pack 1, can not make the fluctuation at the interval of the degree that this battery unit 3 sustains damage owing to the displacement of the battery 11 in the battery unit 3.
(manufacture method of battery case)
Then, use the manufacture method of Fig. 7 and the battery case 2 of Fig. 8 to describe.In addition, because the manufacture method of battery case 2 integral body is with to use shaping mould to carry out the usual way of resin forming identical, therefore following, the forming method of main part to rib 23 describes.In Fig. 7 and Fig. 8, the outstanding part of the opposition side from bottom surface sections 21 to long side side wall portion 22a is the part by the drop gate moulding, removes after battery case 2 moulding.
In addition, in Fig. 7 and Fig. 8, for the side wall portion 22 that relatively the has draft angle manufacture method with rib 23, expression is not provided with the cross section and the cross section that is provided with the part of rib 23 of the long side side wall portion 22a of rib 23 in a figure.That is, in Fig. 7 and Fig. 8, represent to observe the cross section that differs the positions of 90 degree with respect to the bottom surface sections 21 of battery case 2 from the face normal direction across the cross section of the upper portion of center line (single-point line) and the cross section of lower portion.
As mentioned above, rib 23 draft angles that are formed on the battery case 2 are zero, therefore as shown in Figures 7 and 8, for example use angled pin 43 moulding.That is, when for example utilize injection mo(u)lding to form the occasions of battery case 2 a pair of shaping mould 41,41, making draft angle is that the outstanding end of zero rib 23 is by angled pin 43 moulding.
In addition, the other end with being attached at the distolateral opposition side on the sliding part 44 of angled pin 43 forms that more the forward end sectional area is more big.That is, the angled pin 43 that tilts with respect to the matched moulds direction is more more big to this another distolateral preceding end cross-sectional area in order to utilize another distolateral side to form the outstanding end of rib 23 of battery case 2.
As present embodiment, only be the rib 23 of side wall portion 22 by making the part that forms with draft angle zero, other parts of this side wall portion 22 form with the state with draft angle, can guarantee the mouldability of battery case 2, can form the rib of the movement that can suppress battery unit 3 effectively.
In addition, in the present embodiment, the shape of angled pin 43 has and is attached at that another of a distolateral opposition side on the sliding part 44 is distolateral to have the shape that more the forward end sectional area is more big, but is not limited thereto, so long as the shape that works as angled pin also can be other shapes.
On sliding part 44, also link beyond distolateral to be useful at one of above-mentioned angled pin 43 and make battery case 2 distolateral from the outstanding protrudent pin 45 of shaping mould 42.
As shown in Figure 8, after utilizing a pair of shaping mould 41,42 to form battery cases 2, make sliding part 44 near direction (the white direction of arrow among the figure) movement of shaping mould 42 and utilize protrudent pin 45 and angled pin 43 to make battery case 2 from shaping mould 42 demouldings.At this moment, protrudent pin 45 utilizes the slip of sliding part 44 to move to make battery case 2 outstanding at once.On the other hand, angled pin 43 is mobile in the direction that the moving direction with respect to sliding part 44 tilts.In addition, can be attached at slidingly and movingly angled pin 43 on the sliding part 44 one distolateral with respect to sliding part 44 to sliding mobile with the direction of the glide direction quadrature of this sliding part 44.
Thus, another of angled pin 43 is distolateral owing to the rib 23 with respect to battery case 2 leaves to the inboard of this battery case 2, is zero even therefore make these rib 23 draft angles, the also demoulding swimmingly.
The rib 23 of draft angle zero also has the method that slide cores forms in using except the method for using angled pin 43 formation as described above.Below, use Fig. 9～Figure 12 that the method that slide cores in using forms the rib 23 of draft angle zero is described.
In addition, in Fig. 9～Figure 12, for the side wall portion 22 that relatively the has draft angle manufacture method with rib 23, expression is not provided with the cross section and the cross section that is provided with the part of rib 23 of the long side side wall portion 22a of rib 23 in a figure.That is, in Fig. 9～Figure 12, represent to observe the cross section that differs the positions of 90 degree with respect to the bottom surface sections 21 of battery case 2 from the face normal direction across the cross section of the upper portion of center line (single-point line) and the cross section of lower portion.
In using, in the forming method of slide cores, as shown in figure 10, utilize shaping mould 51,52 to form the outside of battery case 2, on the other hand, use the inboard of a part, core 53 and slide cores 54 these battery cases 2 of formation of shaping mould 52.
Shaping mould 51 is fixed dies, has the recess of the outer surface that forms battery case 2.
But shaping mould 52 is dynamic models, has the core 53 of the inboard that can dispose formation battery case 2 and the hole portion of slide cores 54.In addition, shaping mould 52 in the peripheral part of this hole portion, the predetermined of the side wall portion 22 of battery case 2 form the protuberance 52a that the zone has the inner surface that is used to form this side wall portion 22.The mask relative with shaping mould 51 of this protuberance 52a has draft angle, and on the other hand, the face of the hole portion side of shaping mould 52 forms that moving direction at shaping mould 52 extends and be vertical with the bottom surface sections 21 of battery case 2.In addition, be formed with the through hole that protuberance 52a is connected at projected direction at shaping mould 52.In this through hole, can on the projected direction of protuberance 52, dispose protrudent pin 57 movably.
The part that core 53 and interior slide cores 54 will contact with each other respectively forms taper.Specifically, core 53 has under the state that makes shaping mould 51,52 matched moulds the conical surface 53a that the gauge towards shaping mould 51 Widths (left and right directions of Fig. 9～Figure 12) of fixation side diminishes.On the other hand, the gauge that has under the state that makes shaping mould 51,52 matched moulds towards shaping mould 51 Widths (left and right directions of Fig. 9～Figure 12) of fixation side of interior slide cores 54 becomes big conical surface 54a.Thus, when making core 53 to shaping mould 51 side shiftings of fixation side, the conical surface 54a butt of the conical surface 53a of this core 53 and interior slide cores 54 makes in this slide cores 54 mobile to the direction (Fig. 9～Figure 12's is right-hand) of compression compression spring 55.
In above structure, as shown in Figure 9, when making movable side shaping mould 52 close to fixation side shaping mould 51 sides, as mentioned above, in the second half section of matched moulds, core 53 is more close soon than movable side shaping mould 52.At this moment, the conical surface 53a of core 53 contacts with the conical surface 54a of interior slide cores 54, utilizes this core 53, and interior slide cores 54 is mobile to the direction (Fig. 9's is right-hand) of compression compression spring 55.When matched moulds finished, under the state that movably side shaping mould 52 and core 53 also stop, as shown in figure 10, the conical surface 53a of core 53 contacted at their whole with the conical surface 54a of interior slide cores 54.In addition, the symbol 56 of Fig. 9～Figure 12 is holding members.
Under the state of Figure 10, by potting resin in the space that is formed by shaping mould 51,52, core 53 and interior slide cores 54, form battery case 2.After forming battery case 2, as shown in figure 11, movable side shaping mould 52 is moved to the direction of leaving shaping mould 51.As mentioned above, core 53 owing to utilize afterburning parts reinforcing, therefore moves than shaping mould 52 as described above soon, and the conical surface 53a of this core 53 slides mobile with respect to the conical surface 54a of interior slide cores 54.Thus, interior slide cores 54 can not pressed by core 53, utilizes the elastic recovering force of compression spring 55 to move to the direction of leaving movable side shaping mould 52.Afterwards, as shown in figure 12, utilize protrudent pin 57 to make battery case 2 leave shaping mould 52.
In addition, also identical with Fig. 7 and Fig. 8 even in Fig. 9～Figure 12, the outstanding part of the opposition side from bottom surface sections 21 to long side side wall portion 22a is the part that is formed by drop gate, removes after battery case 2 moulding.
(effect of execution mode one)
According to more than, in the present embodiment, in the side wall portion 22 of the battery case 2 of folding and unfolding battery unit 3, the long side side wall portion 22a draft angle that is provided with outstanding end is a plurality of ribs 23 of zero.Thus, even impact the occasion be applied on the battery pack 1, also can utilize rib 23 displacement of the battery unit 3 in the limit battery box 2 equably.Therefore, even the battery unit 3 that stacked multistage electrode 11 forms, the displacement difference of the battery 11 that also can reduce subordinate and higher level's battery 11.Thus, in vibration or impact when being applied on the battery pack 1, the thin slice 32～36 that can prevent from being connected on the end of battery 11 sustains damage.
In addition, rib 23 relatively is located on a pair of long side side wall portion 22a of battery case 2.Thus, can utilize rib 23 to limit the movement of the battery unit 3 of folding and unfolding in this battery case 2 more reliably.
In addition, at least one rib 23 is with under with the state of battery unit 3 folding and unfoldings in battery case 2 in a plurality of ribs 23, and the supercentral mode of observing the end of the battery 11 that is positioned at this battery unit 3 from the side of this battery case 2 arranges.Thus, even the occasion that battery unit 3 moves in battery case 2 also can be utilized rib 23 to support each battery 11 of this battery unit 3 more reliably, thereby can limit the movement of this each battery 11 more reliably.
And therefore a plurality of ribs 23 can realize the structure of the movement of limit battery 11 more reliably with low cost owing to be integrally formed on the long side side wall portion 22a of battery case 2.
In addition, by at battery case 2 rib 23 being set, owing to do not need to arrange in battery unit 3 sides as in the past the mobile limiting structure of battery 11, therefore can realizing the miniaturization of this battery unit 3, and improve the degree of freedom of the design of thin slice 32～36.Thus, can realize the reduction of the manufacturing cost of thin slice 32～36, and can prevent that the be restricted performance of the battery pack 1 that causes of shape by thin slice 32～36 from descending.
In addition, by the mode of on the long side side wall portion 22a of battery case 2, extending with the box peristome 2a side to this battery case 2 from bottom surface sections 21 rib 23 is set, realizes that the intensity of this battery case 2 improves.That is, the rib 23 that is located on the long side side wall portion 22a of battery case 2 works with rib as the reinforcing of this long side side wall portion 22a.
(execution mode two)
Figure 13 represents the schematic configuration of the battery case 61 of execution mode two of the present utility model.This execution mode on the long side side wall portion 63a of battery case 61 so that the structure of rib 64 this point and above-mentioned execution mode one is set is different with the corresponding mode of each battery 11 of battery unit 3.In the following description, to the identical symbol of the structure mark identical with above-mentioned execution mode one and omit explanation, only difference is described.
Specifically, as Figure 13 and shown in Figure 14, be provided with a plurality of rib 64(protuberances shorter than rib 23 length of execution mode one at the long side side wall portion 63a of battery case 61 in the mode corresponding with stacked battery 11 for multistage (for example three grades)).That is, at the long side side wall portion 63a of battery case 61, under the state that battery unit 3 is configured in the battery case 61, be formed with a plurality of a plurality of ribs 64 that 61 box peristome 61a side is extended from bottom surface sections 62 to battery case in the residing part in the end of each battery 11.
In this embodiment, rib 64 has about 1/3 length of length from bottom surface sections 62 sides of long side sidewall 63a to the box peristome 61a side of battery case 61, arranges and form three grades in the horizontal.In addition, in this embodiment, rib 64 is located on the different along the vertical direction positions in neighbouring level.In addition, rib 64 is identical with execution mode one, is formed on the relative respectively position at a pair of long side side wall portion 63a of battery case 61.
In addition, even in this embodiment, as shown in figure 14, when rib 64 was observed from the side of battery case 61, also the mode with the center of the end that is positioned at each battery 11 arranged.Thus, even the occasion that battery pack 60 is vibrated or impacted also can utilize the rib 64 that is located on the battery case 61 to limit the movement of each battery 11 more reliably.
In addition, the rib 64 of present embodiment is also identical with above-mentioned execution mode, can form by using angled pin or interior slide cores.
In Figure 13 and Figure 14, symbol 63 expression side wall portions, symbol 63b represents the short brink side wall portion, symbol 65 expression folding and unfolding spaces.
(effect of execution mode two)
According to more than, in this embodiment, at the long side side wall portion 22a of battery case 2 a plurality of ribs 63 are set in the mode corresponding with each battery 11 of battery unit 3.Thus, can limit the movement of each battery 11 more reliably.Therefore, can prevent the breakage of the thin slice 32～36 of battery unit 3 more reliably.
(other execution modes)
More than, execution mode of the present utility model has been described, above-mentioned execution mode only is used for implementing example of the present utility model.Thus, be not limited to above-mentioned execution mode, can the above-mentioned execution mode of appropriate change and enforcement in the scope that does not break away from its purport.
In the respective embodiments described above, on battery case 2,61 long side side wall portion 22a, 63a, form rib 23,64 in the mode of observing the center of each battery 11 that is positioned at battery unit 3 from battery case 2,61 side.But, be not limited thereto, so long as can be limited in the position of the movement of the battery unit 3 in the battery case 2,61, rib can be set at an arbitrary position.That is, as long as with in vibration or impact when being applied on the battery pack 1, battery unit 3 can damaged degree setting limit the rib of the movement of this battery pack 3, then can be not with whole battery 11 of battery unit 3 rib be set accordingly.But, even in this occasion, when battery unit 3 is mobile in battery case 2,61, because the root portion of the protuberance 32b～36b of thin slice 32～36 is damaged easily, therefore preferably in the mode of the movement of the battery 11 of the periphery that limits this protuberance 32b～36b rib is set.
In the respective embodiments described above, be formed on the rib 23,64 that this battery case 2,61 depth direction (with the bottom surface sections vertical direction) extend at battery case 2,61 long side side wall portion 22a, 63a.But, being not limited thereto, the shape of rib is so long as the shape that jag portion is positioned on the plane A with the axis L-orthogonal of battery 11 then can be arbitrary shape.In addition, so long as outstanding end be positioned on the plane A with the axis L-orthogonal of battery 11 mode to battery case 2,61 side-prominent, then can be the jut with the shape beyond the rib.
Specifically, as shown in figure 15, in the side wall portion 73 of battery case 71, the inner surface of long side side wall portion 73a forms a plurality of ribs 74 that extend abreast with bottom surface sections 72.In this occasion, each rib 74 is located on the long side side wall portion 73a in the mode of the middle body of observing the axis direction end by this battery 11 from the axis direction of battery 11.
These ribs 74 preferably are located at the relative position of a pair of long side side wall portion 73a in the mode of the middle body of the axis direction end by whole battery 11, but other parts of axis direction end that yet can be by battery 11 can be not form accordingly with the axis direction end of whole battery 11 yet.In addition, can be only in a pair of long side side wall portion 73a the long side side wall portion 73a of a side rib 74 is set.That is, rib 74 so long as the configuration of the movement of axis direction that can limit battery 11 then can arrange arbitrarily.In addition, Figure 15 is the figure in cross section of this battery case 71 of the Width middle body that the is illustrated in short brink side wall portion 73b occasion of dissecing battery case 71 along its length.
In addition, as shown in figure 16, in the side wall portion 83 of battery case 81, the inner surface of long side side wall portion 83a forms polygonal ribs 84,85 such as quadrangle or hexagon in the mode of observing the axis direction end of crossing over a plurality of batteries 11 from the axis direction of battery 11.In detail, in the example of Figure 16, at the rib 85 of the rib 84 of long side side wall portion 83a formation rhombus with the hexagon shape of the leap axis direction end of observing the battery 11 that does not overlap with this rib 84 from the axis direction of battery 11.And, in the example of Figure 16, these ribs 84,85 respectively in the outside and the inboard form dual.Thus, can utilize the whole battery 11 of rib 84,85 in stable status lower support battery unit 3 more.
These ribs 84,85 identical with structure shown in Figure 15 preferably are located at the relative position of a pair of long side side wall portion 83a, but also can only be located on a side the long side side wall portion 83a.In addition, in Figure 16, change shape at rib 84 and rib 85, but the shape of rib can be all identical, also can be whole different shapes.In addition, the shape of rib then can be arbitrary shape so long as can limit the shape of movement of the axis direction of this battery 11 by the axis direction end of support cells 11.In addition, Figure 16 is also identical with Figure 15, and the Width middle body that is illustrated in short brink side wall portion 83b dissects the figure in cross section of this battery case 81 of the occasion of battery case 81 along its length.
In addition, as shown in figure 17, in the side wall portion 93 of battery case 91, the inner surface of long side side wall portion 93a form observe from the axis direction of battery 11 outstanding for the toroidal identical with the axis direction end of a plurality of batteries 11 and have the protuberance 94 of the diameter that equates with this axis direction end.It is plane that this protuberance 94 outstanding distolateral forms.Thus, owing to can utilize each protuberance 94 to support each battery 11, therefore can utilize protuberance 94 to limit the movement of the axis direction of this battery 11 more reliably.
In addition, from above-mentioned Figure 15～Figure 17, rib 74,84,85 and protuberance 94 form jag portion respectively and be positioned on the plane A with the axis L-orthogonal of battery 11.That is, rib 74,84,85 and protuberance 94 as long as jag portion is positioned on the plane A with the axis L-orthogonal of battery 11, then can be arbitrary shape.In addition, plane A preferably with the end parts parallel of the battery axis direction of battery unit 3.
In the respective embodiments described above, making battery 11 be columned battery, but be not limited thereto, also can be the battery of other columns.
In the respective embodiments described above, to have the rib 23,64 that draft angle is zero outstanding end in order forming, to use angled pin or interior slide cores, but be not limited thereto, so long as can form rib 23,64 method, then can be additive method.
In the respective embodiments described above, rib 23,64 is located at position relative to each other on battery case 2,61 long side side wall portion 22a, the 63a.But, be not limited thereto, so long as the configuration of support cells 11 in the longitudinal direction then can be configured in rib 23,64 the last different position mutually of long side side wall portion 22a, 63a.In addition, the structure of above-mentioned Figure 15～shown in Figure 17 is also identical.
In the respective embodiments described above, be illustrated in the figure of the state that has disposed battery unit 3 in the battery case 2,61.But, also can lid be installed on the battery case 2,61 in the mode that covers peristome 2a, 61a, also can be so that the mode that the peristome of other battery cases overlaps with peristome 2a, 61a utilizes these other battery cases to cover peristome 2a, 61a.In addition, can be positioned at the mode setting battery box 2,61 of top with bottom surface sections 21,62.
In the respective embodiments described above, in battery case 2,61, integrally formed bottom surface sections 21,62 and side wall portion 22,63, but also integrally formed side wall portion 22,63 only make bottom surface sections 21,62 be different parts.That is, can be the battery case that forms peristome at side wall portion 22,63 cylinder axis direction both ends.In addition, battery case 2,61 side wall portion 22,63 shape are so long as can then can be arbitrary shape in the shape of inboard folding and unfolding battery unit 3.
Utilizability on the industry is as follows.
Battery case of the present utility model can be as the battery case utilization that constitutes battery pack by the battery of a plurality of columns of folding and unfolding.
Claims (10)
1. a battery case is characterized in that,
Possess the side wall portion that forms the tubular that extends at cylinder axis direction,
Above-mentioned side wall portion form can be under the state relative with above-mentioned side wall portion of the both ends of the axis direction of battery the folding and unfolding space of folding and unfolding battery unit, this battery unit by with axis each other parallel mode be layered in and be electrically connected this battery mutually under the state of a plurality of batteries of the column that axis direction extends and constitute each other
The position corresponding with the axis direction end of this battery on the inner surface of the side wall portion relative with the axis direction end of above-mentioned battery in above-mentioned side wall portion is positioned at mode on the axis plane orthogonal with above-mentioned battery at the integrally formed side-prominent a plurality of protuberances towards above-mentioned folding and unfolding space of the inner surface of above-mentioned side wall portion with jag portion.
2. battery case according to claim 1 is characterized in that,
Above-mentioned protuberance arranges in the mode of the end parts parallel of the above-mentioned axis direction of outstanding residing above-mentioned plane, end and above-mentioned battery unit.
3. battery case according to claim 1 and 2 is characterized in that,
In the both ends of the cylinder axis direction of above-mentioned side wall portion, at least one side's end is formed with peristome,
Above-mentioned side wall portion tilts in inner surface is positioned at the outside gradually to an above-mentioned side's end from the opposing party's end mode, and compares with above-mentioned plane, and above-mentioned inner surface is big with respect to the inclination of above-mentioned tube axle.
4. according to each described battery case of claim 1～3, it is characterized in that,
Above-mentioned protuberance is to limit the inner surface that mode below the setting of movement of this battery is located at above-mentioned side wall portion with the distance of the part of outstanding end and the side wall portion relative with this protuberance, with the difference of the length of the axis direction of above-mentioned battery.
5. according to each described battery case of claim 1～4, it is characterized in that,
Above-mentioned protuberance is located on the position relative to each other at the inner surface of relative above-mentioned side wall portion.
6. battery case according to claim 5 is characterized in that,
Above-mentioned protuberance is located on the inner surface of above-mentioned side wall portion with respect to the residing parallel plane mode in the outstanding end that is located at the locational protuberance relative with this protuberance with outstanding residing above-mentioned plane, end.
7. according to each described battery case of claim 1～6, it is characterized in that,
In the both ends of the cylinder axis direction of above-mentioned side wall portion, at least one side's end is formed with peristome,
Above-mentioned protuberance forms the rib shape that extends along above-mentioned cylinder axis direction at the inner surface of above-mentioned side wall portion.
8. according to each described battery case of claim 1～7, it is characterized in that,
Have in the both ends of the cylinder axis direction that covers above-mentioned side wall portion, the sealing board of the opposing party's end, above-mentioned sealing board and above-mentioned side wall portion are integrally formed.
9. a battery pack is characterized in that,
By the battery unit folding and unfolding is constituted in each described battery case of claim 1～8.
10. battery pack according to claim 9 is characterized in that,
Above-mentioned battery unit also possess for the link that is electrically connected battery end each other and
The insulating thin that arranges in the mode of the end that covers above-mentioned link and above-mentioned battery.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2011/062728 WO2012164730A1 (en) | 2011-06-02 | 2011-06-02 | Cell case, and cell pack provided with same |
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| Publication Number | Publication Date |
|---|---|
| CN203071146U true CN203071146U (en) | 2013-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011900005838U Expired - Lifetime CN203071146U (en) | 2011-06-02 | 2011-06-02 | Battery box and battery pack comprising same |
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| Country | Link |
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| JP (1) | JPWO2012164730A1 (en) |
| CN (1) | CN203071146U (en) |
| WO (1) | WO2012164730A1 (en) |
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| JP5955695B2 (en) * | 2012-08-10 | 2016-07-20 | 三洋電機株式会社 | Battery pack |
| JP5751634B2 (en) | 2012-09-28 | 2015-07-22 | 株式会社Ｇｓユアサ | Power storage device |
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| JP2022516829A (en) * | 2018-11-02 | 2022-03-03 | ティーブイエス モーター カンパニー リミテッド | Holder structure for energy storage cell in energy storage device |
| JP7381277B2 (en) | 2019-09-30 | 2023-11-15 | 株式会社マキタ | battery pack |
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| JP3056640B2 (en) * | 1994-06-11 | 2000-06-26 | 本田技研工業株式会社 | Battery storage structure for power supply of electric assist bicycle |
| JP4578147B2 (en) * | 2004-04-30 | 2010-11-10 | 三洋電機株式会社 | Pack battery |
| US7989104B2 (en) * | 2004-10-28 | 2011-08-02 | Samsung Sdi Co., Ltd. | Battery module |
| JP4632754B2 (en) * | 2004-11-09 | 2011-02-16 | 三洋電機株式会社 | Pack battery |
-
2011
- 2011-06-02 JP JP2011553186A patent/JPWO2012164730A1/en active Pending
- 2011-06-02 CN CN2011900005838U patent/CN203071146U/en not_active Expired - Lifetime
- 2011-06-02 WO PCT/JP2011/062728 patent/WO2012164730A1/en active Application Filing
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| US10431783B2 (en) | 2015-03-04 | 2019-10-01 | Lg Chem, Ltd. | Battery pack |
| CN107112449B (en) * | 2015-03-04 | 2019-12-31 | 株式会社Lg 化学 | Battery pack |
| JP2018510465A (en) * | 2015-03-04 | 2018-04-12 | エルジー・ケム・リミテッド | Battery pack |
| CN107112449A (en) * | 2015-03-04 | 2017-08-29 | 株式会社Lg 化学 | Battery pack |
| CN107946501A (en) * | 2016-10-12 | 2018-04-20 | 株式会社杰士汤浅国际 | Electrical storage device |
| CN107302073A (en) * | 2017-08-04 | 2017-10-27 | 珠海市嘉德电能科技有限公司 | Portable multi-function video camera battery group structure |
| CN111164784A (en) * | 2017-09-29 | 2020-05-15 | 三洋电机株式会社 | Power supply device |
| CN111164784B (en) * | 2017-09-29 | 2022-11-08 | 三洋电机株式会社 | Power supply device |
| CN110277516A (en) * | 2018-03-14 | 2019-09-24 | 丰田自动车株式会社 | Electrical storage device |
| CN110277516B (en) * | 2018-03-14 | 2021-12-31 | 丰田自动车株式会社 | Electricity storage device |
| JP2020535600A (en) * | 2018-06-26 | 2020-12-03 | エルジー・ケム・リミテッド | Battery pack and the car that contains it |
| JP7062174B2 (en) | 2018-06-26 | 2022-05-06 | エルジー エナジー ソリューション リミテッド | Battery pack and cars containing it |
| US11482750B2 (en) | 2018-06-26 | 2022-10-25 | Lg Energy Solution, Ltd. | Battery pack and vehicle comprising the same |
| CN113497304A (en) * | 2020-04-01 | 2021-10-12 | 三星Sdi株式会社 | Battery pack |
| US11777172B2 (en) | 2020-04-01 | 2023-10-03 | Samsung Sdi Co., Ltd. | Battery pack |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2012164730A1 (en) | 2014-07-31 |
| WO2012164730A1 (en) | 2012-12-06 |
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