CN101964408A - Battery pack - Google Patents

Battery pack Download PDF

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Publication number
CN101964408A
CN101964408A CN201010236960XA CN201010236960A CN101964408A CN 101964408 A CN101964408 A CN 101964408A CN 201010236960X A CN201010236960X A CN 201010236960XA CN 201010236960 A CN201010236960 A CN 201010236960A CN 101964408 A CN101964408 A CN 101964408A
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CN
China
Prior art keywords
monocell
battery pack
back slab
corbel back
join domain
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.)
Pending
Application number
CN201010236960XA
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Chinese (zh)
Inventor
水田克二
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Electric Co Ltd
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Sanyo Electric Co Ltd
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Filing date
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Publication of CN101964408A publication Critical patent/CN101964408A/en
Pending legal-status Critical Current

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The invention provides a battery pack with high impact resistance capable of preventing the cost from increasing, comprising a shell with a housing space inside, a plurality of single batteries housed in the housing space and a guide plate for connecting the single batteries. The guide plate (101a) is a flat plate shaped and formed by integrating an area (A) connected with a terminal of one single battery, an area (B) connected with the terminal of another single battery and a connection area (C) connecting the area (A) with the area (B). The connection area on the guide plate (101a) is formed into an inverted V shape, or squared-C-shape or U-shape with an upper connected part when the virtual linear line AX3 of the centers P1,P2 of the connection areas (A)(B) emerges out.

Description

Battery pack
Technical field
The present invention relates to a kind of Battery pack, relate in particular to shape the corbel back slab that connects between a plurality of monocells of being accommodated.
Background technology
Battery pack is used to communication equipment such as pocket walkie-talkie, electric tool, also has in the extensive uses such as electric assisted bicycle, hybrid vehicle, electric automobile (patent documentation 1 to 3).Employed Battery pack mostly adopts under serial or parallel connection or series-parallel state the structure that a plurality of cylindrical shape monocells is housed in the housing in these purposes.Below, the type of attachment of using Fig. 6 to monocell of the prior art is described.
As shown in Figure 6, in the Battery pack, make two pitch circle tubular monocell 900a, 900b with the tube heart alignment of each battery of Y direction and on X-direction adjacent state be set up in parallel.And, connect by corbel back slab 901 between the terminal of cylindrical shape monocell 900a, 900b.
Corbel back slab 901 is for being processed into the metallic plate of strip, and the end 901a of one side is connected with the end face spot welding of cylindrical battery 900a, and the end 901b of its opposite side is connected with the end face spot welding of cylindrical battery 900b.In the example of Fig. 6, two pitch circle tubular monocell 900a, 900b connect by corbel back slab 901 under the state of butt between the outer peripheral face each other.
(patent documentation)
Patent documentation 1 TOHKEMY 2001-291500 communique
Patent documentation 2 TOHKEMY 2005-93363 communiques
Patent documentation 3 TOHKEMY 2008-287993 communiques
Yet, for above-mentioned Battery pack of the prior art, under the situation that is subjected to falling etc. from the impact of outside, shown in the arrow among Fig. 6, cylindrical shape monocell 900a, 900b are subjected to the power in the Z-direction vibration, thus, can expect the situation that can dislocate in the junction of corbel back slab 901 and each cylindrical shape monocell 900a, 900b.Especially,, require its resistance to impact height, even require it to be subjected to dislocate from the connection between the impact monocell of outside for employed Battery packs of pocket equipment such as walkie-talkies.
, the quantity that increases the connecting portion between monocell and the corbel back slab can cause that production efficiency is low, the cost of Battery pack increases, and therefore is difficult to adopt this scheme.
Summary of the invention
The object of the present invention is to provide a kind of cost that can suppress to increase and the high Battery pack of resistance to impact.
A kind of Battery pack comprises that inside is provided with the housing of receiving space, is housed in a plurality of monocells and the corbel back slab that is connected that is used between described a plurality of monocell of described receiving space, and has following feature.
In Battery pack of the present invention, when observing extract first monocell that adjoins each other and second monocell out from described a plurality of monocells, described first monocell and described second monocell dispose under the state of butt between the outer peripheral face each other.And, the corbel back slab that connects described first monocell and described second monocell is a tabular, and the connecting area that leaves configuration and second join domain that be connected with the terminal of described second monocell of distance and link described first join domain and described second join domain by first join domain of the terminal that connects described first monocell, with respect to described first join domain is provided with integratedly and forms.Described connecting area with the state of deviating from from the imaginary line at the center of the center that links described first join domain and described second join domain, is formed the shape of Ha font, コ font or U font that top is bonded.
In Battery pack of the present invention, be used for the corbel back slab of the connection between first monocell and second monocell, between first join domain and second join domain, have connecting area.And, the connecting area of corbel back slab, owing to form the Ha font that top is bonded or the shape of コ font or U font with the state that breaks away from from imaginary line, even so make under the situation of battery vibration because of the impact that is subjected to from the outside, also can be center and corbel back slab bending with the connecting area, and as playing a role for the buffer area of impacting.Therefore, in Battery pack of the present invention, each of first monocell and second monocell and corbel back slab is connected suffered impact and cushioned by the connecting area on the corbel back slab, so connecting portion is difficult to dislocation.
Particularly, as mentioned above, battery is subjected under the situation from the impact of outside because of falling etc., each monocell with the direction of reporting to the leadship after accomplishing a task with the monocell closure of adjacency on move or vibration.At this moment, use under the situation of strip corbel back slab of the prior art as shown in Figure 6, the connecting portion of monocell and corbel back slab (spot welding connecting portion) is subjected to the effect of shearing force, and dislocation takes place to connect easily.
Relative therewith, in Battery pack of the present invention, the connecting area of corbel back slab, owing to form the Ha font that top is bonded or the shape of コ font or U font with the state that breaks away from from imaginary line, so this part can absorb impact by self strain to above-mentioned impact.Therefore, in Battery pack of the present invention, owing to can relax the suffered shearing force of above-mentioned connecting portion, so have the resistance to impact higher than the Battery pack of prior art.
In addition, in Battery pack of the present invention, owing to can obtain high resistance to impact by the connecting area that above-mentioned shape is set on corbel back slab, so there is no need to increase the pad between corbel back slab and the monocell, also need not to increase the process number of manufacturing, thereby can not cause cost to increase.
In addition, in Battery pack of the present invention, corbel back slab is a tabular, so can also suppress to produce the redundant space in the housing.For example, on corbel back slab, though the zone that can form accordion-like (snake abdomen shape) is to substitute connecting area, but need increase the space at the thickness direction of corbel back slab in order to form accordion-like in this case, but, in the present invention, because corbel back slab of the present invention is a tabular, so compare with the situation that connecting area is formed accordion-like, need not to produce unnecessary space.In addition, can make flat corbel back slab by stamping-out processing etc., thus compare with the situation of the corbel back slab that adopts the three-dimensional manufacturing that behind stamping-out, needs pressure processing, make the corbel back slab operation few aspect have advantage.
Therefore, Battery pack of the present invention has high resistance to impact not increasing under the condition of cost.
In the Battery pack of the present invention, for example can adopt following distortion.
In stating Battery pack of the present invention, at the connecting area of corbel back slab, can adopt butt joint between the edge (
Figure BSA00000205685500031
I closes わ せ) part be processed to have the structure of curvature (R processing).By the part of the butt joint between the edge of connecting area being carried out curvature processing, even under situation about being subjected to, also can suppress extension from the crack of this butted part etc. from the impact of outside, can also suppress stress in addition and concentrate.
In addition, in the Battery pack of the invention described above, each of a plurality of monocells is face shaping cylindraceous, be identical shape, the shape of described corbel back slab and size can be set as follows, that is, described connecting area is inclusive in the envelope zone that the end face by described first monocell and second monocell constitutes.
Need to prove, above-mentioned " being included in the envelope zone " is meant, when observing in abutting connection with first monocell of configuration and second monocell with the axial outside of the circular end surface quadrature of each monocell, under the situation of drawing two external imaginary lines, the connecting area of corbel back slab is included between these two imaginary lines.
Description of drawings
Fig. 1 is the stereogram of the surface structure of the Battery pack 1 in the expression execution mode.
Fig. 2 is the three-dimensional exploded view of the internal structure of expression Battery pack 1.
Fig. 3 is the stereogram of 10 structure of the core component that comprised in the structure of expression Battery pack 1.
Fig. 4 (a) is the partial perspective view after the part of core component 10 is amplified in expression, and Fig. 4 (b) is the three-dimensional exploded view of the annexation of expression corbel back slab 101a and monocell 100a, 100b.
Fig. 5 is the vertical view of the structure of expression corbel back slab 101a;
Fig. 6 is the stereogram of the syndeton of expression monocell 900a of the prior art, 900b and corbel back slab 901.
Description of reference numerals
1 Battery pack
10 core components
11,12 housing parts
13 double-faced adhesive tapes
14a~14h Waterproof Breathable thin slice
100a~100f monocell
101a~101d corbel back slab
102 circuit breaker elements
103 terminal components
103a~103d corbel back slab
104a~104e charging terminal
105f~105h terminal that discharges
106 thermistor elements
107 diode elements
108 circuit breaker elements
109 locking bars
110~113 insulation boards
Embodiment
Below, describe for example for being used to implement embodiments of the present invention.Need to prove, employed in the following description execution mode, just structure of the present invention for convenience of explanation and action effect and the example that uses, remove its essence partly, the present invention is not limited to following execution mode.
1, the surface structure of Battery pack 1
Below, use Fig. 1 that the surface structure of the Battery pack 1 in the execution mode is described.
As shown in Figure 1, the outward appearance of Battery pack 1 is the rectangular shape after each bight is processed by R.In Fig. 1, the inboard of the outward appearance of Battery pack 1, the housing parts of upside 11 are illustrated, and the housing parts of downside is concealed at the Z-direction downside.
The end limit annex of the X-direction left end of housing parts 11 is provided with five 11a to 11e of window portion, and the part of charging terminal 104a to 104e is exposed.In addition, also be provided with three 11f to 11h of window portion on the end face on the X-direction right side of housing parts 11, discharge terminal 105f to 105h is exposed.
2,1 of Battery pack internal structure
Below, use Fig. 2 and Fig. 3 that the internal structure of Battery pack 1 is described.
As shown in Figure 2, for Battery pack 1, in the inner space that constitutes by housing parts 11 and housing parts 12, contain the core component 10 that comprises as six joint monocell 100a to 100f of inscape.This six joints monocell 100a to 100f has identical cylindrical shape each other, and is being set up in parallel under the state of butt between the outer peripheral face mutually, so that the tube heart is along Y direction.
Need to prove that in the Battery pack 1, housing parts 11 and housing parts 12 constitute by resin material.
In the inner space, except that core component 10, also contain double-faced adhesive tape 13 in housing parts 11 and 10 insertions of core component.And, offer eight air vent hole 12a to 12g on the housing parts 12 of the downside of Z-direction, be pasted with Waterproof Breathable thin slice 14a to 14h at each air vent hole 12a to 12g.Waterproof Breathable thin slice 14a to 14h has waterproof and saturating wet function concurrently.Waterproof Breathable thin slice 14a to 14h for example can be by extending the film after processing polytetrafluoroethylregenerated and polyether polyols with reduced unsaturation is compound obtains.
10, six joint monocell 100a to 100f are connected in series by four corbel back slab 101a to 101d and circuit breaker element 102 for core component.Particularly, monocell 100a and monocell 100b are connected in series by corbel back slab 101a, monocell 100b and monocell 100c are connected in series by corbel back slab 101b, monocell 100c and monocell 100d are connected in series by corbel back slab 101c, monocell 100d and monocell 100e are connected in series by circuit breaker element 102, and monocell 100e and monocell 100f are connected in series by corbel back slab 101d.
Need to prove, circuit breaker element 102, has the structure of extending element lead 102b, 102c from the two ends of the 102a of element body portion, the fore-end of element lead 102b is connected with the gate terminal that forms at the end face of monocell 100d, and the fore-end of the element lead 102c of an other side is connected with the gate terminal of the end face of monocell 100e.In addition, between the outer peripheral face of circuit breaker element 102 and monocell 100d, 100e, be inserted with insulation board 110.
Be bent and be processed into wavy insulation board 113, connect at the Z-direction downside with the six joint monocell 100a that are set up in parallel.The insulation board 111,112 that is processed to arcuation along each side of monocell 100a and monocell 100f respectively with its butt.
As shown in Figure 2, on six batteries 100a to 100f, dispose the terminal component 103 of framework dress across insulation board 111 to 113.Terminal component 103 constitutes as follows, that is, charging terminal 104a to 104e, discharge terminal 105f to 105h, heat-sensitive electronic component 106, diode element 107, circuit breaker element 108 connect by corbel back slab 103a to 103d....In addition, for terminal component 103, locking bar 109 is installed in the X-direction left side.
As shown in Figure 3, in the core component 10, on monocell 100a to 100f, dispose terminal component 103, with the downside of encirclement Z-direction and the left and right sides of X-direction in the mode of between battery, not staying big interval.Charging terminal 104a to 104e with across the state configuration of insulation board 111 on the outer peripheral face of monocell 100a, discharge terminal 105f to 105h is with across the state configuration of insulation board 112, the 113 outer peripheral face side at monocell 100f.
3, corbel back slab 101a to 101d
At first, use Fig. 4 instruction book battery 100a, 100b to be connected with corbel back slab 101a's.
Shown in Fig. 4 (a), corbel back slab 101a is connected by the side end face, front of formed positive terminal and monocell 100b on the side end face, front of spot welding connection and monocell 100a.
Shown in Fig. 4 (b), corbel back slab 101a only is connected with monocell 100a at the positive terminal place, and does not contact with other part.Need to prove, between monocell 100a and corbel back slab 101a, also insulation board can be inserted into the part the position that connects except spot welding.
4, the shape of corbel back slab 101a to 101d
Below, be example with corbel back slab 101a, use Fig. 5 that the shape of corbel back slab 101a to 101d is described.
As shown in Figure 5, corbel back slab 101a is made of one piece of conductive plate, and in vertical view, the regional A and the area B that are used for being connected respectively with monocell 100a and monocell 100b are configured to be complementary with the spacing of monocell 100a and monocell 100b.That is, for the center P separately of regional A and area B 1, P 2, by the axle A at these centers X1, A X2Between spacing be equivalent to the spacing (referring to Fig. 3) of the monocell 100a and the monocell 100b of core component 10.
Need to prove, in regional A and area B, offer otch 101a in order to prevent to produce vortex flow 1And otch 101a 2
The connecting area C that on corbel back slab 101a, forms regional A and area B and between the two, link.Connecting area C is with respect to center P 1And center P 2The imaginary line A that links X3, be formed Ha font, コ font, circuitous shape ((going into the river) the shape portion C of confluxing of U font that top is bonded 1).That is, corbel back slab 101a in the present embodiment, be not as corbel back slab 901 of the prior art only for strip, but be formed Ha font that top is bonded or コ font, U font on the whole.
In addition, as shown in Figure 5, for corbel back slab 101a, the part band curvature of the butt joint between each edge in connecting area C ground forms.Particularly, the shape portion C of confluxing of connecting area C 1By the position of lining with curvature R 1Form, the each several part that is connected on regional A and area B is with curvature R 2And R 3Form.
Need to prove that in Fig. 5, though be that example is illustrated with corbel back slab 101a, other corbel back slab 101b to 101d also has identical structure.
5, superiority
Monocell 1 for present embodiment, the connecting area C of the corbel back slab 101a to 101d of core component 10 is formed Ha font, コ font or the U font (see figure 5) that top is bonded, so this connecting area C absorbs the function of impacting for impacting (referring to Fig. 5 arrow F) strain takes place because of falling etc. thereby have.Therefore, the resistance to impact height of Battery pack 1.
In addition, in the Battery pack 1, the join domain C of Ha font, コ font or the U font that is bonded by the above-mentioned top that is provided with as corbel back slab 101a to 101d, can obtain high resistance to impact, so there is no need to increase the pad (solder joint number) between corbel back slab 101a to 101d and the monocell 100a to 100f, also there is no need to increase the process number in the manufacturing, thereby can suppress the increase of cost.
In addition, the corbel back slab 101a to 101d of Battery pack 1, even for tabular also has the function of absorb impacting as described above, so, and compare for absorbing the situation of impacting the connecting area that forms accordion-like etc., can also be suppressed at the unnecessary space of generation in the housing.
In addition, Battery pack 1 for present embodiment, the shape of the connecting area C of corbel back slab 101a to 101d and be sized to and satisfy following requirement, be connecting area C with respect to six joint monocell 100a to 100f, be inclusive in the envelope zone that the circular end surface by these monocells constitutes in the X-direction configured in series.Therefore, utilize the connecting area C of corbel back slab 101a to 101d, need not to be provided with unnecessary space, thereby improve whole miniaturization and optimize space efficiency.
Need to prove, above-mentioned " being included in the envelope zone " is meant, with above-mentioned the same, when observing six joint monocell 100a to 100f in abutting connection with configuration with the direction of principal axis outside of the circular end surface quadrature of each monocell, under the situation of drawing two external imaginary lines, the connecting area C of corbel back slab 101a to 101d is included between these two imaginary lines.
In addition, the flat corbel back slab 101a to 101d of Battery pack 1 can make with few operation by stamping-out processing etc., thus compare with the situation of the corbel back slab that adopts the three-dimensional that behind stamping-out, needs pressure processing to make, make the corbel back slab operation few aspect have advantage.
In addition, for the corbel back slab 101a to 101d of Battery pack 1, at connecting area C, because the curvature of the part of edge butt joint each other is formed R 1, R 2, R 3So, even under situation about being subjected to, also can suppress the extension of crackle etc. from the part of this butt joint from the impact of outside, in addition, can also suppress the part that stress focuses on butt joint.
(other business)
In the above-described embodiment, though monocell 100a to 100f has columnar face shaping separately, in addition can also adopt monocell with square appearance shape.In addition, in above-mentioned execution mode 1, though adopted six joint monocell 100a to 100f built-in example of structure, the quantity of built-in battery is not limited to this, also can be for below five joints, otherwise also can for seven save more than.
In addition, in the above-described embodiment, though the connecting area C of corbel back slab 101a to 101d be shaped as the コ font, also can make it slicker and more sly, and become U-shaped.Otherwise, link the part of the edge butt joint each other of all the other C, not necessarily leave no choice but have curvature R shown in Figure 5 1, R 2, R 3, get final product and only carry out taper cut-out (テ one パ one カ Star ト).
In addition, though in addition the inner example that has adopted six joint monocell 100a to 100f to be the form that is connected in series of Battery pack 1 can also adopt to be connected in parallel or the structure of connection in series-parallel connection.
In addition, in the above-described embodiment,, also can adopt the structure that connects the above monocell of three joints by a corbel back slab though adopted the structure that connects two joint monocells by a corbel back slab.In this, under the situation,, can obtain the effect identical between each monocell and join domain with above-mentioned effect by connecting area C as shown in Figure 5 is set.
The present invention is used to realize having the superior Battery pack of resistance to impact height and cost aspect as the power supply with the portable unit headed by the communication equipment.

Claims (4)

1. a Battery pack is characterized in that, comprises that inside is provided with the housing of receiving space, is housed in a plurality of monocells and the corbel back slab that is connected that is used between described a plurality of monocell of described receiving space,
When first monocell that extraction adjoins each other from described a plurality of monocells and second monocell are observed,
Described first monocell and described second monocell be with the state configuration of butt between the outer peripheral face each other,
The corbel back slab that connects described first monocell and described second monocell is a tabular, and the connecting area that leaves the configuration of distance ground and second join domain that is connected with the terminal of described second monocell and link described first join domain and described second join domain by first join domain of the terminal that is connected in described first monocell, with respect to described first join domain is provided with integratedly and forms
Described connecting area with the state of deviating from from the imaginary line at the center of the center that links described first join domain and described second join domain, forms the shape of Ha font, コ font or U font that top is bonded.
2. Battery pack as claimed in claim 1 is characterized in that, in described connecting area, the part of the butt joint between the edge is processed to have curvature.
3. the Battery pack shown in claim 1 or 2 is characterized in that, each of described a plurality of monocells has face shaping cylindraceous, and is mutually the same shape,
The shape and the size of described corbel back slab are set as follows, that is, described connecting area is inclusive in the envelope zone that the end face by described first monocell and described second monocell constitutes jointly.
4. as any described Battery pack in the claim 1 to 3, it is characterized in that, described a plurality of monocells so that between all axles parallel mode be provided with side by side.
CN201010236960XA 2009-07-22 2010-07-21 Battery pack Pending CN101964408A (en)

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KR101890565B1 (en) 2011-02-14 2018-08-23 가부시키가이샤 한도오따이 에네루기 켄큐쇼 Lighting device
JP6098254B2 (en) * 2013-03-15 2017-03-22 三洋電機株式会社 Battery pack
JP7172576B2 (en) * 2018-12-25 2022-11-16 トヨタ自動車株式会社 assembled battery

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