CN102195010A - Battery pack with guide plate - Google Patents

Battery pack with guide plate Download PDF

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Publication number
CN102195010A
CN102195010A CN2010101356462A CN201010135646A CN102195010A CN 102195010 A CN102195010 A CN 102195010A CN 2010101356462 A CN2010101356462 A CN 2010101356462A CN 201010135646 A CN201010135646 A CN 201010135646A CN 102195010 A CN102195010 A CN 102195010A
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CN
China
Prior art keywords
battery
guide plate
mentioned
external shell
power brick
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Granted
Application number
CN2010101356462A
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Chinese (zh)
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CN102195010B (en
Inventor
米田晴彦
福川浩市
拜野真己
米山慎吾
寺田润史
近藤敏郎
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.)
Panasonic New Energy Co ltd
Yamaha Motor Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Yamaha Motor Co Ltd
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Application filed by Sanyo Electric Co Ltd, Yamaha Motor Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to CN201010135646.2A priority Critical patent/CN102195010B/en
Publication of CN102195010A publication Critical patent/CN102195010A/en
Application granted granted Critical
Publication of CN102195010B publication Critical patent/CN102195010B/en
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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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  • Battery Mounting, Suspending (AREA)

Abstract

The invention discloses a battery pack. A battery combination (9) connected with terminal electrodes (1A) of a plurality of batteries is accommodated in an external shell (2) through a guide plate (3); each battery (1) is accommodated in the external shell (2) under the condition that the inner faces of a heat dissipation shell (10) on at least one opposite side is opposite to the terminal electrode (1A); the guide plate (3) connected on the terminal electrode (1A) of the battery (1) is thermally coupled to the inner face of the heat dissipation shell (10) by the battery pack; the external shell (2) is made of plastics; an inner-face protruding part (12) thermally coupled with the guide plate (3) in a face contacted state is arranged on the inner face of the heat dissipation shell part (10) in a protruding manner; a concave part (13) is arranged outside the inner-face protruding part (12) by the heat dissipation part (10); and the heat of the battery (1) is conducted to the inner-face protruding part (12) of the heat dissipation shell part (10) from the guide plate (3), so as to emit heat to outside from the external shell (2).

Description

The power brick that possesses guide plate
Technical field
The present invention relates to a kind of power brick (battery pack) of on the tip electrodes of a plurality of chargeable batteries, welding guide plate (lead plate) and forming, particularly the power brick of each battery being dispelled the heat by guide plate.
Background technology
For the power brick that a plurality of batteries are connected with the guide plate serial or parallel connection, it is important that each battery-efficient ground is dispelled the heat.Particularly, serial or parallel connection connects a plurality of and bigger power brick of electric current that discharge and recharge, and the caloric value of battery is bigger, and it is important that the heating of battery is dispelled the heat efficiently.In order to realize this heat radiation, people develop a kind of power brick of dispelling the heat from the guide plate that is connected on the battery (referring to TOHKEMY 2005-317456 communique).
The power brick that the spy opens the 2005-317456 communique is provided with the lead-in wire protuberance on guide plate, utilize this lead-in wire protuberance that guide plate is dispelled the heat, and by guide plate battery is dispelled the heat.The power brick of this structure thereby is difficult to increase area of dissipation owing to dispel the heat by the lead-in wire protuberance.In addition,, have current potential, thereby can not make its outside give prominence to and dispel the heat to external shell because this lead-in wire protuberance is connected on the tip electrodes of battery.
In order to increase area of dissipation, people also develop a kind of power brick that external shell is used to dispel the heat (referring to TOHKEMY 2001-76696 communique).
The spy opens the power brick of 2001-76696 communique and accommodate a plurality of cylindrical secondary batteries in external shell, and radiating part is set on external shell.Near the configuration thermal-arrest portion battery of the central portion of being accommodated in external shell conducts the heat of this thermal-arrest portion by the radiating part of heat pipe (heat pipe) to external shell, dispel the heat.This structure to thermal-arrest portion, conducts to the radiating part of external shell with the heat of this thermal-arrest portion by heat pipe with the heat conduction of battery, dispels the heat to the outside.The power brick of this structure need be provided with special-purpose member such as thermal-arrest portion and heat pipe in order to dispel the heat, have the comparatively complicated shortcoming of the required structure of heat radiation.
Summary of the invention
The present invention is that purpose is developed to solve this shortcoming.Free-revving engine of the present invention is, provides a kind of radiator structure simple, and the power brick that the heat of each battery can be dispelled the heat to the outside of external shell effectively.
Power brick of the present invention possesses: a plurality of chargeable batteries 1; Guide plate 3 is connected on the tip electrodes 1A of this battery 1; External shell 2 is being accommodated and is being passed through the battery combination 9 that this guide plate 3 connects battery 1.External shell 2 has the radiating shell portion 10 that the heat of battery 1 is dispelled the heat on the one side at least at opposed face, and become the opposed state of inner face that makes tip electrodes 1A and this radiating shell portion 10, each battery 1 is contained in the external shell 2 under the state that is parallel to each other.And power brick is disposed at the mode of the inner face of radiating shell portion 10 with the guide plate on the tip electrodes 1A that will be connected battery 13, accommodates battery combination 9 in external shell 2, guide plate 3 is thermally coupled to the inner face of radiating shell portion 10.External shell 2 is a plastics system, be provided with surface contact state and the inner face protuberance 12 that is provided in inboard guide plate 3 thermal couplings in that the inner face of radiating shell portion 10 is outstanding, radiating shell portion 10 is provided with recess 13 in the outside of inner face protuberance 12, the heat of battery 1 is carried out heat conduction from guide plate 3 to the inner face protuberance 12 of radiating shell portion 10, dispel the heat to the outside from external shell 2.
It is simple that above-mentioned power brick has the heat radiation of structure, and the feature that can dispel the heat from external shell the heat of each battery to the outside effectively.Its former because, above-mentioned power brick will be attached at the guide plate on the tip electrodes of each battery, carry out thermal coupling with the inner face protuberance that makes it in the radiating shell portion that is arranged on external shell in that inner face is given prominence to, and, by this inner face protuberance is set recess is set on external shell, inner face protuberance the heat of battery from guide plate heat conduction to radiating shell portion dispels the heat to the outside from external shell.This structure is close to the inner face protuberance with thermal coupling state and guide plate on the area of broad, can dispel the heat the heat of guide plate to the outside efficiently.
In addition, above-mentioned power brick connects guide plate on the tip electrodes of whole battery two ends settings, the heat of this guide plate is dispelled the heat to the outside from the radiating shell portion of external shell.This radiator structure also realizes and can evenly cool off all batteries, reduces the temperature difference of each battery and the feature evenly cooled off.
Power brick of the present invention can be provided with radiating shell portion 10 on external shell 2 opposed two sides.
This power brick can be on the two sides of external shell the inner face protuberance of set radiating shell portion, carry out heat conduction from the guide plate that two ends connected of battery, the heat of battery is dispelled the heat to the outside very efficiently.
Power brick of the present invention can be provided with fin 14 in one piece on the recess 13 of radiating shell portion 10.
This power brick is increasing area of dissipation by the fin on the lateral surface that is arranged on the inner face protuberance, when dispelling the heat efficiently, utilizes this fin to strengthen the inner face protuberance, prevents distortion.The inner face protuberance that does not deform becomes the state of reliably being close to the surface of guide plate, keeps desirable thermal coupling, makes the heat conduction of carrying out from guide plate good, dispels the heat efficiently.Particularly, even if because of the thermal conduction plate of battery is heated, heating makes intensity decreases to the guide plate after the heating to the inner face protuberance, and the fin that also is set at the outside is strengthened, and prevents distortion.Thereby although become the heated state of battery, the inner face protuberance still is close to guide plate with the thermal coupling state on the area of broad reliably, and the heat of guide plate is dispelled the heat to the outside efficiently.
Power brick of the present invention can possess inner casing 4, and battery 1 is disposed on the precalculated position.This inner casing 4 can be provided with and insert battery 1 and it is disposed at the battery installation section 22 of the both ends open in precalculated position, and be provided with interlocking recess 21 on the surface, the guide plate 3 that this interlocking recess 21 will be connected on the tip electrodes 1A of the battery 1 that is arranged on this battery installation section 22 is disposed at the precalculated position.Make the profile of the inner face protuberance 12 in the radiating shell portion 10 that is arranged on external shell 2, become and can be inserted into interlocking recess 21 and be disposed at the shape in precalculated position, inner face protuberance 12 is directed to interlocking recess 21, with the thermal coupling state configuration in guide plate 3.
Above-mentioned power brick can be carried out thermal coupling with guide plate reliably and makes it not the occurrence positions skew being arranged on inner face protuberance on the external shell, and the heat of battery is dispelled the heat efficiently.Its former because, utilize inner casing, guide plate and inner face protuberance are disposed on the precalculated position.
Power brick of the present invention can be provided with a plurality of guide plates 3 are rabbeted recess 21 with parallel state configuration in the multiple row in precalculated position on inner casing 4, in the radiating shell portion 10 of external shell 2, a plurality of inner face protuberances 12 that insert in each interlocking recess 21 is set.
Above-mentioned power brick can be in the guide plate short circuit that prevents adjacency reliably, by each guide plate cool batteries efficiently.
Power brick of the present invention can clip elasticity heat exchange sheet 7 between inner face protuberance 12 raised faces that are provided with on the external shell 2 and guide plate 3.
Above-mentioned power brick can be utilized the elasticity heat exchange sheet, and the heat heat conduction more efficiently of guide plate to the inner face protuberance, is dispelled the heat efficiently.
Power brick of the present invention can be provided with the elasticity pressing tablet 33 that is pressed into the tip electrodes 1A of battery 1 by elasticity with the metallic plate of guide plate 3 as elastically deformable.This elasticity pressing tablet 33 can be outstanding towards tip electrodes 1A elasticity, and this elasticity pressing tablet 33 by being pressed on the tip electrodes 1A, is made it to be electrically connected.
Above-mentioned power brick need not be linked to the method for guide plate with spot welding etc. on the tip electrodes of battery, just can be when guide plate be electrically connected on tip electrodes reliably, guide plate is close to the raised face of inner face protuberance under even more ideal state, under desirable state, is carried out thermal coupling.Its former because, be arranged on elasticity pressing tablet on the guide plate by elasticity by being pressed on the tip electrodes and being electrically connected, and utilize this elasticity pressing tablet to push the reaction of tip electrodes, the raised face of inner face protuberance pushed and is close to by guide plate by elasticity.
Above-mentioned and other purpose of the present invention, with and feature, will become more obvious according to the detailed description of hereinafter carrying out with accompanying drawing.
Description of drawings
Fig. 1 is the stereogram of the related power brick of one embodiment of the invention.
Fig. 2 is the exploded perspective view of power brick shown in Figure 1.
Fig. 3 is the rear isometric view of power brick shown in Figure 2.
Fig. 4 is that exploded perspective view is amplified in the part of power brick battery combination shown in Figure 2.
Fig. 5 is the exploded perspective view of battery combination shown in Figure 4.
Fig. 6 is that power brick major part shown in Figure 1 is amplified the part section stereogram.
Fig. 7 is the exploded perspective view of the related power brick of another embodiment of the present invention.
Fig. 8 is another routine amplification stereogram of expression guide plate.
Embodiment
Below, embodiments of the invention are described with reference to the accompanying drawings.The power brick of Fig. 1 to Fig. 6 is accommodated battery combination 9 in external shell 2.Battery combination 9 is by guide plate 3 series connection and a plurality of chargeable batteries 1 that are connected in parallel.
[external shell]
Fig. 2, Fig. 3 and external shell 2 shown in Figure 6 are the box-shapeds that have the radiating shell portion 10 that the heat of battery 1 is dispelled the heat on opposed faces, accommodate battery combination 9 in inside.Though the external shell 2 in the accompanying drawing is provided with radiating shell portion 10 on opposed two sides, external shell also can only be provided with radiating shell portion on the one side of opposed faces.External shell 2 in the accompanying drawing makes radiating shell portion 10 forms squarely outward, is made as by perisporium 11 and links this shape around square.This external shell 2 is accommodated battery combination 9 so that each battery 1 becomes plumbness with respect to radiating shell portion 10, and is configured to make the tip electrodes 1A of all batteries 1 mutually opposed with the inner face of radiating shell portion 10.Under this state battery combination 9 is accommodated power brick in the external shell 2, its each battery 1 is accommodated in the external shell 2 under the state that is parallel to each other.Owing on the tip electrodes 1A of all batteries 1, connecting guide plate 3, thereby between battery 1 and radiating shell portion 10, setting guide plate 3.
External shell 2 is shaped plastic products and produces.In this external shell 2, be thermally coupled to the inner face protuberance 12 on the guide plate 3 that sets the inboard with surface contact state, outstanding being arranged on the inner face of radiating shell portion 10.Inner face protuberance 12 carries out thermal coupling with the surface of its raised face and guide plate 3.Inner face protuberance 12 directly is close to raised face as shown in Figure 6 with the surface of guide plate 3, perhaps as shown in Figure 7, be close to via the surface of elasticity heat exchange sheet 7 and guide plate 3, carries out thermal coupling with guide plate 3.Moreover external shell 2 at its arranged outside recess 13, makes fin 14 integrally formed settings by inner face protuberance 12 is set on this recess 13 in radiating shell portion 10.
The battery combination 9 of Fig. 2 to Fig. 4 disposes a plurality of guide plates 3 with being separated from each other on its two sides.On the external shell 2, the mode that is coupled with the surface heat with each guide plate 3 is provided with a plurality of inner face protuberances 12.The battery combination 9 of accompanying drawing is packed battery 1 in the plastic inner casing 4, is configured on the precalculated position.Inner casing 4 is provided with multiple row interlocking recess 21, and a plurality of guide plates 3 are disposed on the precalculated position under parallel state.External shell 2 in radiating shell portion 10, is provided with a plurality of inner face protuberances 12 that are used for inserting each interlocking recess 21 as Fig. 2, Fig. 3 and shown in Figure 6.Inner face protuberance 12 make its outer form can insert in the interlocking recess 21 battery combination 9 is disposed at shape on the precalculated position of external shell 2.Inner face protuberance 12 makes its outer forming with the interior shape of rabbeting recess 21 compare slightly little shape, inserts and makes it not occurrence positions skew in the interlocking recess 21.This external shell 2 can insert inner face protuberance 12 in the interlocking recess 21 of inner casing 4, prevents the offset between external shell 2 and the battery combination 9.Thereby this external shell 2 can be contained in battery combination 9 on the precalculated position, and the raised face of inner face protuberance 12 and the surface of guide plate 3 are carried out thermal coupling.
Fig. 2, Fig. 3 and external shell 2 shown in Figure 6 are not provided with fin 14 in the mode of not giving prominence to from the surface of radiating shell portion 10 on recess 13.The fin 14 configuration multiple row raised lines of accompanying drawing make it mutual intersection.This fin 14 can be strengthened radiating shell portion 10 when enlarging area of dissipation.Particularly, configuration multiple row raised line make it cross one another fin 14 with its strengthen with prevent inner face protuberance 12 in length and breadth to distortion, raised face stably can be pressed on the surface of guide plate 3 and carry out thermal coupling.In addition,, do not increase, can also prevent fin 14 outstanding damages in addition because of fin 14 makes the profile of external shell 2 so that the structure of the fin 14 of recess 13 not to be set from the outstanding mode in the surface of external shell 2.But it is outstanding that the fin of recess also can be increased the surface that makes it from external shell, further enlarges area of dissipation and improve radiating effect.Though top fin 14 is arranged on the raised line in the recess 13, fin also can be arranged on the interior local protuberance of recess or recess is configured as concaveconvex shape, is provided with.
But, in the recess that the radiating shell portion of external shell not necessarily must form in the outside of inner face protuberance fin is set.This external shell makes the inner face of inner face protuberance carry out thermal coupling with surface contact state and guide plate, dispels the heat from the inside-out portion of recess.
External shell 2 adopts shapings such as ABS resin, is the border with the centre of perisporium 11, is divided into two, adopts screw to twist solid or embedded etc. linking method and fixes.External shell 2 can be designed as purposes or purpose, behaviour in service and battery 1 profile that will accommodate and the corresponding different shape of number with power brick.Fig. 1 extremely external shell 2 shown in Figure 3 is divided into the 1st external shell 2A and the 2nd external shell 2B.External shell 2 shown in the drawings is in order to link the 2nd external shell 2B and the 1st external shell 2A, links protuberance 15 and be provided with along outer peripheral face.To link protuberance 15 and interlink, link the 1st external shell 2A and the 2nd external shell 2B.Moreover, under this state, twist admittedly with screw, fix external shell 2.The 1st external shell 2A and the 2nd external shell 2B are the roughly shape of symmetry.
Also have, in the accompanying drawings,, that is to say the use external shell 2 that makes a perisporium 11 with facing down, the facing down of fin 14 that be provided with of the radiating shell portion 10 of external shell 2 used though under the state that erects, use external shell 2.In addition, can be according to the situation of external shell 2 uses, selection comprises that the power brick of the embodiment of external shell 2 is provided with face, is used.
[battery combination]
Fig. 2 to Fig. 5 represents battery combination 9.The battery combination 9 of these accompanying drawings possesses: a plurality of chargeable batteries 1, and adjacency sets under the state that is parallel to each other; Inner casing 4 is disposed at battery 1 on the precalculated position; A plurality of guide plates 3 are welded on the tip electrodes 1A that is configured in each battery 1 in the inner casing 4, connect the battery 1 of adjacency.
The battery 1 of accompanying drawing is a cylindrical battery, and the tip electrodes 1A at two ends is positioned at one side, and more piece is arranged as the multilayer multiple row.The battery combination 9 of accompanying drawing be arranged in the accompanying drawings 6 layers up and down, about 14 row.The battery 1 of the row of adjacency staggers up and down and arranges, so that adjacent battery 1 is positioned in the middle of it mutually.This arrangement can make columnar battery approaching mutually, is arranged as multiple row.But power brick of the present invention is not defined as this state with the number and the configuration of battery.For example, can be the chessboard clathrate also with cell arrangement.
[battery]
Battery 1 is chargeable battery.Though the power brick of accompanying drawing is made as cylinder battery with battery 1, in battery, also can use square battery or thin battery.In the present embodiment, use the lithium ion battery of cylinder type as battery 1.Lithium ion battery is suitable for big capacity, powerful power brick.It is former because lithium ion battery can increase the capacity with respect to volume or weight.But power brick of the present invention is not defined as lithium ion battery with battery, can use the secondary cell of Ni-MH battery or nickel-cadmium cell etc. yet.
[inner casing]
Battery combination 9 shown in Figure 5 is inserted battery 1 in the battery installation section 22 of inner casing 4, be configured on the precalculated position.Inner casing 4 is configured as the shape with cylindrical battery installation portion 22 as shown in Figure 5.Battery installation section 22 is configured as the interior shape that can insert cylinder battery.The inner casing 4 of accompanying drawing is provided with 84 battery installation section 22, makes it to insert the battery 1 of 6 layer of 14 row.Battery installation section 22 is with both ends open.The power brick of Fig. 5 is being divided into 2 with inner casing 4 as the left and right directions in the accompanying drawing of cylindrical battery 1 length direction.About inner casing 4 with the both ends open of battery installation section 22, be configured as the shape that can insert cylindrical battery 1.Inner casing 4 adopts insulating component shapings such as plastics.By be provided with shape after the battery installation section 22 with the inner casing 4 of plastics forming by battery 1 subregion is arranged, just can correctly locate a plurality of batteries 1 on one side arranges on one side, and, just can prevent to bring out the thermal runaway of battery 1 by each battery 1 is separated respectively independently.Be divided into 2 and the inner casing 4 that is shaped and linking under 2 the state, the tip electrodes 1A that makes battery 1 is exposed to the outside from the peristome of battery installation section 22.Be exposed to the method welding guide plate 3 that adopts spot welding or laser welding etc. on the outside tip electrodes 1A.As the plastic material of inner casing 4, can utilize Merlon.This strength of materials is big, has the character that the electrolyte for the lithium ion battery that spills is difficult to dissolve.Also have, ABS resin is owing to have the character that the electrolyte for the lithium ion battery that spills is easy to decompose, thereby right and wrong are preferred.
Inner casing 4 will be rabbeted recess 21 and be shaped and be provided with on the two sides with the both ends open of battery installation section 22, and this interlocking recess 21 embeds and installation wire guide plate 3 is disposed at it on precalculated position.Guide plate 3 is directed on the interlocking recess 21, is connected on the tip electrodes 1A of battery 1.Thereby interlocking recess 21 is arranged on the position that has disposed the guide plate 3 that is connected on the tip electrodes 1A.
[guide plate]
Guide plate 3 is directed in the interlocking recess 21 of inner casing 4, in the enterprising spot welding of the tip electrodes 1A of battery 1 or laser welding and connection, the battery 1 of adjacency is connected and is connected in parallel.The battery combination 9 of Fig. 2 to Fig. 4 is provided with clearance for insulation 6 with many sheet guide plates 3 and is arranged parallel to each other, and is welded on the tip electrodes 1A of battery 1.The battery combination 9 of Fig. 4 is arranged the guide plate 3 of 7 row on an end of battery 1 (being the end of upper left side) in Fig. 4, connect the battery 1 of 6 * 2 row on each guide plate 3.In addition, on another end of battery 1 (being the end of lower right side), arrange the guide plates 3 of 8 row in Fig. 4, the guide plate 3 of both sides is connected the battery 1 of 6 * 1 row as output guide plate 3X, and on remaining 6 row guide plates 3, connect the batteries 1 of 6 * 2 row.This guide plate 3 is connected in parallel and is in 6 batteries 1 of same row, the battery 1 that is connected in series and is in adjacent column.That is to say,, be connected in parallel 6, be connected in series 14, promptly connect to 6 parallel connections and 14 series connection 84 batteries 1.Moreover, be disposed at the output guide plate 3X of both sides, battery 1 another end (being the end of lower right side) in Fig. 4, the output that is connected to 84 battery 1 two ends of 6 14 series connection in parallel is connected on the lead-out terminal 36.The output guide plate 3X of accompanying drawing is at its lateral margin, is provided with to be used for the efferent 3B that is connected with lead-out terminal 36.Output guide plate 3X is provided with the bending sheet being connected in parallel 6 banded connecting portion lateral margin bending, and this bending sheet as efferent 3B, is equipped on the side of inner casing 4, is connected on the lead-out terminal 36.This output guide plate 3X is owing to make efferent 3B become the tabular of wider width, thereby can reduce the resistance of efferent 3B.Moreover in Fig. 4, the efferent 3B of the output guide plate 3X on the left of being equipped on is connected on the lead-out terminal 36 via protection component 37.This protection component 37 is if flowed the then electric current blocking element of breaking current of overcurrent, for example can use fuse or circuit breaker, PTC etc.The lead-out terminal 36 set peristome 16 (referring to Fig. 2 and Fig. 3) from the binding protuberance 15 of external shell 2 that is connected on the efferent 3B of both sides exposes to the outside.Moreover, as shown in Figure 1,, supply to electronic equipment one side by be connected in the flexible cord 40 on the lead-out terminal 36 that exposes from external shell 2 via bolt 41.External shell 2 shown in the drawings makes along the insulation wall outstanding linking lead-out terminal 36 sidepieces that expose on the protuberance 15 17 integrally formed and be provided with, and utilizes this insulation wall 17 to protect the connecting portion of lead-out terminal 36 and flexible cord 40.
Guide plate 3 will use the less and heat conduction good metal plate of resistance, nickel plate for example, the metallic plate of plated with nickel etc. on the surface of iron, ferroalloy or copper, copper alloy etc.The metallic plate that guide plate 3 used thicknesses are suitable for welding most, for example metallic plate of 0.1mm～0.3mm.No matter the guide plate 3 that carries out spot welding or laser welding is blocked up or thin excessively, all can't be welded on the tip electrodes 1A of battery 1 under the desirable state.Blocked up guide plate is owing to make its fusion need bigger heat energy in order to heat, thereby the harmful effect that battery heats is increased.In addition, its resistance of Bao guide plate or thermal resistance are bigger excessively, and do not have enough intensity.Therefore, guide plate will be considered the electric current and the purposes that flow, is set at best thickness.
The guide plate 3 of Fig. 4 and Fig. 6 carries out on the weld part of spot welding at the tip electrodes 1A to battery 1, is provided with the slit 31 that reduces the welding idle current.The guide plate 3 of accompanying drawing is provided with vertical slit 31A on weld part, about this vertical slit 31A, be provided with lateral slit 31B discretely with vertical slit 31A.This guide plate 3 by the both sides that are pressed in vertical slit 31A, is welded in the electrode of spot welding on the tip electrodes 1A of battery 1 with the both sides of vertical slit 31A.Moreover guide plate 3 is provided with protuberance 3A in the top, is used for being connected with circuit substrate 5.The protuberance 3A of guide plate 3 is connected on the circuit substrate 5 by lead-in wire (lead) 35.
Being welded in the guide plate 3 that the tip electrodes 1A of battery 1 connects stably is connected on the battery 1.The guide plate 3 of Fig. 8 is provided with elasticity pressing tablet 33, and this elasticity pressing tablet 33 adopts the metallic plate of elastically deformable to make, and is pressed into the tip electrodes 1A of battery 1 by elasticity.With 33 bendings of elasticity pressing tablet, make it outstanding towards tip electrodes 1A elasticity.This guide plate 3 utilizes the inner face protuberance 12 of external shell 2 to be pushed towards tip electrodes 1A, and elasticity pressing tablet 33 is electrically connected with tip electrodes 1A.The guide plate 3 of accompanying drawing is provided with a plurality of elasticity pressing tablets 33, the center from tip electrodes 1A of making it to periphery with radial extension.Each elasticity pressing tablet 33 becomes big from the center of tip electrodes 1A towards the periphery width.In addition, between each elasticity pressing tablet 33 gap is set, it is shaped as, and can not produce under the situation of interference at each elasticity pressing tablet 33, pushes tip electrodes 1A.The guide plate 3 of this structure presses on a plurality of elasticity pressing tablets 33 on the tip electrodes 1A independently, is electrically connected, and it is not good to eliminate connection.Its former because, any elasticity pressing tablet 33 all is electrically connected with tip electrodes 1A, it is good to eliminate connection.This guide plate 3 presses on elasticity pressing tablet 33 on the tip electrodes 1A, utilizes its reaction by flexibly by on the raised face that is pressed in inner face protuberance 12.That is to say that the elasticity of elasticity pressing tablet 33 presses on leading section elasticity on the tip electrodes 1A, the part elasticity that guide plate 3 is not provided with elasticity pressing tablet 33 presses on the raised face of inner face protuberance 12.Thereby, this structure eliminate connection between guide plate 3 and the tip electrodes 1A not good in, guide plate 3 contacts under desirable state with inner face protuberance 12, the heat of tip electrodes 1A effectively heat conduction to inner face protuberance 12.In addition, can guide plate 3 be come off from tip electrodes 1A, to be suitable for resembling the purposes of bearing vibration for motor vehicle power brick most because of vibration waits.
[circuit substrate]
The circuit substrate 5 that connects each guide plate 3 is installed electronic unit etc., the computing circuit of the charging control of formation battery 1 and protective circuit etc., installation battery 1 residual capacity.In addition, on circuit substrate 5, carry out residual capacity, unusual, discharge stops (instruction), the computing that stops various information such as (instructions) of charging, obtain etc., with these information, being communicated to this power brick by lead (lead wire) 38 is the electronic equipment (for example electric bicycle) of power supply.Then, according to these information, electronic equipment is carried out various controls.Fig. 1 is provided with the wire openings 18 of lead wire 38 to external shell 2 superincumbent perisporiums 11 shown in Figure 3, from this wire openings 18 lead 38 is drawn out to the outside.
Circuit substrate 5 in Fig. 2 to Fig. 5, fixing and remain in inner casing 4 above.Inner casing 4 is provided with a plurality of positioning ribs 23 for circuit substrate 5 is guided on the precalculated position in one piece around circuit substrate 5.Circuit substrate 5 is directed at the top of inner casing 4 and by on positioning rib 23 area surrounded, twists admittedly with screw, is fixed on the inner casing 4.
Be installed on protective circuit on the circuit substrate 5 and be detect battery 1 overcharging or overdischarge come Control current circuit, detect the circuit that overcharges breaking current of battery 1 etc.Protective circuit possesses the voltage detecting circuit (not shown) that detects battery 1 voltage in order to detect overcharging or overdischarge of battery 1.Voltage detecting circuit detects each cell voltage via guide plate 3, prevents to overcharge or overdischarge.
[elasticity heat exchange sheet]
Power brick shown in Figure 7 sets elasticity heat exchange sheet 7 between the surface of the inner face of external shell 2 and guide plate 3, by this elasticity heat exchange sheet 7, the inner face protuberance 12 of external shell 9 is clung on the surface of guide plate 3.This elasticity heat exchange sheet 7 is clipped on the inner face of guide plate 3 and external shell 2, and the heat of guide plate 3 is carried out heat conduction to external shell 2.This elasticity heat exchange sheet 7 is can strain and heat conduction is good, thin slice with resiliency, is the flexure strip that for example is made of silicones.Though not shown, elasticity heat exchange sheet 7 is close to a face and guide plate 3, the inner face of the inner face protuberance 12 of another face and external shell 2 is close to, and the heat of guide plate 3 is carried out heat conduction to external shell 2 efficiently.Make the two-sided elasticity heat exchange sheet of being close to guide plate 3 and external shell 27, the heat of guide plate 3 is carried out heat conduction to external shell 2 efficiently, the heat of battery 1 is dispelled the heat to the outside of external shell 2 effectively by guide plate 3.Elasticity heat exchange sheet 7 can be thickeied, and the inner face of its two sides and guide plate 3 and external shell 2 is close to.In addition, all right attenuation is carried out heat conduction to external shell 2 efficiently with the heat of guide plate 3.Thereby the thickness of this elasticity heat exchange sheet 7 will be considered the close property and the heat conduction of guide plate 3 and external shell 2 for example are made as 0.5mm to 3mm.Above elasticity heat exchange sheet 7, battery combination 9 is being contained in the external shell 2, under the 1st external shell 2A of binding external shell 2 and the state of the 2nd external shell 2B, pushed a little, utilize flexible recuperability, a face and guide plate 3 are close to, the inner face of another face and external shell 2 is close to.
Above following assembling of power brick.
(1) as shown in Figure 5, a plurality of batteries 1 direction is in accordance with regulations inserted the battery installation section 22 of inner casing 4.A plurality of batteries 1 insert so that the battery that is arranged above and below in the accompanying drawings 1 becomes identical direction, about the battery 1 arranged be reverse.After whole battery 1 is inserted into the battery installation section 22 of inner casing 4, link a pair of inner casing 4.
(2) as shown in Figure 4, at the upper fixed circuit substrate 5 of inner casing 4.Circuit substrate 5 is guided in the inboard of the top and positioning rib 23 of inner casing 4, twists with screw and fixes.
(3) guide plate 3 is arranged on the interlocking recess 21 of inner casing 4, is welded on the tip electrodes 1A of each battery 1, fix.Guide plate 3 adopts the method for spot welding or laser welding etc., is welded on the tip electrodes 1A of the battery 1 that exposes from battery installation section 22 peristomes of inner casing 4.The guide plate 3 that adjoins each other is arranged as and clearance for insulation 6 is set and does not contact.Moreover, with the protuberance 3A of guide plate 3,35 be connected on the circuit substrate 5 by going between.
(4) as shown in Figures 2 and 3, battery combination 9 is contained in the external shell 2.At this moment, make the inner face protuberance 12 of radiating shell portion 10 inner faces that are arranged at external shell 2,, make the guide plate 3 and the raised face of inner face protuberance 12 carry out thermal coupling with the guide plate 3 opposed states of battery combination 9.Inner face protuberance 12 shown in Figure 6 is close to raised face surface direct and guide plate 3, carries out thermal coupling.In addition, power brick shown in Figure 7 is configured under the state that clips elasticity heat exchange sheet 7 between the inner face of guide plate 3 and external shell 2, via elasticity heat exchange sheet 7, inner face protuberance 12 is close to the surface of guide plate 3 is carried out thermal coupling.Battery combination 9 is contained in the external shell 2, so that guide plate 3 inner face direct with the thermal coupling state and external shell 2 is close to, perhaps via elasticity heat exchange sheet 7, is close to the inner face of thermal coupling state and external shell 2.
(5) the 1st external shell 2A and the 2nd external shell 2B of connection external shell 2.
Utilizability on the industry
The purposes that power brick of the present invention can be applicable to best that electric wheelchair, electric bicycle, battery-operated motor cycle, electric tool, operation connect a plurality of cell parallels with robot etc. and be connected in series increasing power to be used them.
Although shown and different preferred embodiment of the present invention be described, but obviously the invention is not restricted to those skilled in the art disclosed specific embodiment, these specific embodiments just are used for describing concept of the present invention and can not be interpreted as limitation of the scope of the invention, and this also is applicable to the modifications and variations that fall into the scope of the invention that the claims of enclosing define.

Claims (16)

1. power brick possesses:
A plurality of chargeable batteries (1);
Guide plate (3) is connected to the tip electrodes (1A) of above-mentioned battery (1);
External shell (2) is accommodated the battery combination (9) that connects battery (1) by above-mentioned guide plate (3),
It is characterized in that,
Above-mentioned external shell (2) opposed at least the one side on have the radiating shell portion (10) that the heat of battery (1) is dispelled the heat, and become the opposed state of inner face that makes tip electrodes (1A) and this radiating shell portion (10), each battery (1) is accommodated under the state that is parallel to each other in the above-mentioned external shell (2)
Be disposed at the mode of the inner face of radiating shell portion (10) with the above-mentioned guide plate (3) on the tip electrodes (1A) that will be connected battery (1), in above-mentioned external shell (2), accommodate above-mentioned battery combination (9), above-mentioned guide plate (3) is thermally coupled to the inner face of radiating shell portion (10)
Above-mentioned external shell (2) is a plastics system, be provided with surface contact state and the inner face protuberance (12) that is provided in inboard guide plate (3) thermal coupling in that the inner face of radiating shell portion (10) is outstanding, radiating shell portion (10) is provided with recess (13) in the outside of inner face protuberance (12), the heat of battery (1) is carried out heat conduction from guide plate (3) to the inner face protuberance (12) of radiating shell portion (10), dispel the heat to the outside from external shell (2).
2. power brick as claimed in claim 1 is characterized by,
Above-mentioned external shell (2) has radiating shell portion (10) on opposed two sides.
3. power brick as claimed in claim 1 is characterized by,
On the recess (13) of above-mentioned radiating shell portion (10), be provided with fin (14) in one piece.
4. power brick as claimed in claim 3 is characterized by,
Above-mentioned external shell (2) is provided with on above-mentioned recess (13) not from the outstanding fin (14) in the surface of radiating shell portion (10).
5. power brick as claimed in claim 4 is characterized by,
Above-mentioned fin (14) is configured to the multiple row raised line and crosses one another.
6. power brick as claimed in claim 1 is characterized by,
Also possess inner casing (4), above-mentioned battery (1) is disposed on the precalculated position.
7. power brick as claimed in claim 6 is characterized by,
This inner casing (4) has insertion battery (1) and it is disposed at the battery installation section (22) of the both ends open in precalculated position, and be provided with interlocking recess (21) on the surface, the guide plate (3) that this interlocking recess (21) will be connected on the tip electrodes (1A) of the battery (1) that is arranged on this battery installation section (22) is disposed at the precalculated position; And,
Make the profile of the inner face protuberance (12) in the radiating shell portion (10) that is arranged on external shell (2), become the shape that can be inserted into above-mentioned interlocking recess (21) and be disposed at the precalculated position, inner face protuberance (12) be directed to the interlocking recess (21), with the thermal coupling state configuration in guide plate (3).
8. power brick as claimed in claim 6 is characterized by,
Above-mentioned inner casing (4) has a plurality of guide plates (3) with a plurality of interlocking recesses (21) of parallel state configuration on the precalculated position, in the radiating shell portion (10) of above-mentioned external shell (2), be provided with a plurality of inner face protuberances (12) that insert in each interlocking recess (21).
9. power brick as claimed in claim 8 is characterized by,
The profile of above-mentioned inner face protuberance (12) is the little shape of interior shape than interlocking recess (21), is inserted in the above-mentioned interlocking recess (21) and can offset.
10. power brick as claimed in claim 1 is characterized by,
Clip elasticity heat exchange sheet (7) between the raised face of the inner face protuberance (12) that on above-mentioned external shell (2), is provided with and the guide plate (3).
11. power brick as claimed in claim 10 is characterized by,
Elasticity heat exchange sheet (7) is the elastic sheet that is made of silicones.
12. power brick as claimed in claim 10 is characterized by,
A face of above-mentioned elasticity heat exchange sheet (7) is close to guide plate (3), and another face is close to the inner face of the inner face protuberance (12) of external shell (2), and the heat of guide plate (3) is carried out heat conduction to external shell (2).
13. power brick as claimed in claim 1 is characterized by,
Above-mentioned guide plate (3) is the metallic plate of elastically deformable, have by the elasticity pressing tablet (33) of elasticity by the tip electrodes that is pressed in battery (1) (1A), this elasticity pressing tablet (33) is outstanding towards tip electrodes (1A) elasticity, this elasticity pressing tablet (33) by elasticity by being pressed in tip electrodes (1A) and being electrically connected.
14. power brick as claimed in claim 13 is characterized by,
Above-mentioned guide plate (3) is provided with center from tip electrodes (1A) to a plurality of elasticity pressing tablets (33) of periphery with radial extension.
15. power brick as claimed in claim 14 is characterized by,
Above-mentioned elasticity pressing tablet (33) becomes big from the center of tip electrodes (1A) towards the periphery width.
16. power brick as claimed in claim 1 is characterized by,
Above-mentioned guide plate (3) is soldered to the tip electrodes (1A) of battery (1) and is connected.
CN201010135646.2A 2010-03-10 2010-03-10 Battery pack with guide plate Active CN102195010B (en)

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CN113036284A (en) * 2019-12-23 2021-06-25 本田技研工业株式会社 Electricity storage device
US11417923B2 (en) * 2017-07-24 2022-08-16 Sanyo Electric Co., Ltd. Battery pack and manufacturing method therefor
GB2606039A (en) * 2021-08-18 2022-10-26 Twi Ltd Electron beam welding method and apparatus

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US11417923B2 (en) * 2017-07-24 2022-08-16 Sanyo Electric Co., Ltd. Battery pack and manufacturing method therefor
WO2019163549A1 (en) * 2018-02-22 2019-08-29 三洋電機株式会社 Battery pack and method for producing same
CN111699571A (en) * 2018-02-22 2020-09-22 三洋电机株式会社 Battery pack and method for manufacturing same
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GB2606039A (en) * 2021-08-18 2022-10-26 Twi Ltd Electron beam welding method and apparatus
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GB2606039B (en) * 2021-08-18 2023-05-31 Twi Ltd Electron beam welding method and apparatus

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Effective date of registration: 20230828

Address after: Osaka, Japan

Patentee after: Panasonic New Energy Co.,Ltd.

Patentee after: Yamaha Motor Co.,Ltd.

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Patentee before: Sanyo Electric Co.,Ltd.

Patentee before: Yamaha Motor Co.,Ltd.