WO2012057322A1 - 組電池及びこれを用いた車両 - Google Patents
組電池及びこれを用いた車両 Download PDFInfo
- Publication number
- WO2012057322A1 WO2012057322A1 PCT/JP2011/074945 JP2011074945W WO2012057322A1 WO 2012057322 A1 WO2012057322 A1 WO 2012057322A1 JP 2011074945 W JP2011074945 W JP 2011074945W WO 2012057322 A1 WO2012057322 A1 WO 2012057322A1
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- WIPO (PCT)
- Prior art keywords
- battery
- separator
- sub
- bus bar
- rectangular
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/647—Prismatic or flat cells, e.g. pouch cells
-
- 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
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
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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
- H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
- H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
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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
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
- H01M50/291—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
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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
Definitions
- the present invention relates to a battery assembly including a battery stack in which a plurality of rectangular battery cells are stacked with a separator interposed therebetween, and a vehicle using the same, and in particular, mounted on an electric vehicle such as a hybrid vehicle or an electric vehicle to run the vehicle
- the present invention relates to an assembled battery most suitable for a power supply for supplying electric power to a motor and a vehicle using the same.
- a large-capacity power supply device used in in-vehicle applications and the like, a large number of battery cells are connected in series to increase the output voltage and increase the output power. Further, in order to increase the charge capacity with respect to the volume, a power supply device has been developed, in which battery cells are formed from cylindrical to square, and a large number of rectangular battery cells are stacked to form a battery stack (see Patent Document 1).
- a power supply apparatus since the outer case of the rectangular battery cell is made of metal and has a potential in some cases, an insulating separator is interposed between the adjacent rectangular battery cells to prevent short circuiting during stacking. The configuration is adopted.
- the separator is made of resin such as plastic and is formed to have substantially the same size as the rectangular battery cell.
- each rectangular battery cell is provided with an electrode terminal on the upper surface, and after the separator and the rectangular battery cell are stacked to form a battery laminate, these electrode terminals need to be connected to each other by a bus bar.
- the electrode terminal is formed in a cylindrical screw shape, and a screw hole for screwing this screw is formed on the one of the bus bars.
- the screw holes of the bus bar are deviated due to positional deviation or the like at the time of stacking, the electrode terminals can not be inserted and can not be connected to the bus bar.
- the present invention has been made in view of the conventional problems as described above, and a main object thereof is to provide a power supply device capable of facilitating the assembly and positioning operation of a separator.
- a plurality of rectangular battery cells 1 each having an outer shape having a thickness thinner than a width, and the plurality of rectangular shapes And a separator body 20 for insulating the square battery cells 1 from each other by interposing the main surfaces of the battery stack 10 stacked so that the main surfaces of the battery cells 1 face each other.
- the separator body 20 includes a plurality of spacer plates 2 formed in substantially the same size as the main surface of the square battery cell 1, and the plurality of spacer plates 2 as the square battery
- the first sub-separator 21 is provided with a fixing portion 23 for fixing the cell 1 in the stacking direction in a separated state, and the space between the spacer plates 2 inserts the square battery cell 1. It can be formed in the size that can be done.
- the assembly operation of the battery stack can be simplified, and further, By fixing the shape of the first sub-separator in advance, the positioning can be achieved regardless of the lamination of the rectangular battery cells, and the advantage that the fixing of the bus bar is facilitated can be obtained.
- the fixing portion 23 can cover the bottom surface of the battery stack 10.
- the fixing portion 23 can at least partially cover the top surface of the battery stack 10. This has the advantage that the operation of inserting the spacer plate into the gap between the rectangular battery cells placed can be easily performed.
- the separator body 20 further includes the bus bar BB for connecting the electrode terminals provided on the upper surface of the rectangular battery cell 1. And an insulating second sub-separator 22 provided on the upper surface of the battery assembly, the bus bar BB being fixed in a positioned state, and the second sub-separator 22 is connected to the first sub-separator 21.
- the electrode terminals can be connected to each other by the bus bar BB.
- the bus bar can be positioned by the second sub-separator, and when connecting the bus bar to the electrode terminals, connecting the second sub-separator to the separator has an advantage that the connection between both can be extremely easily performed. can get.
- the second sub-separator 22 is divided by the second sub-separator main body 25 and the upper surface of the second sub-separator main body 25 to fix the bus bar BB. It can be constituted by the bus bar portion.
- the second sub-separator is further divided into a second sub-separator main body located in the center row, a first bus bar portion which is divided left and right by the upper surface of the second sub-separator main body, and a second bus bar portion It can be configured.
- the bus bar portion can be further divided into a plurality of bus bar blocks 29.
- the bus bars can be divided into easy-to-handle numbers, and an advantage can be obtained that the task of fixing the bus bars can be performed more easily.
- the second sub-separator main body 25 can be further divided into a plurality of sub-separator blocks 28.
- the spacer plate can be divided into an easy-to-use number, and an advantage can be obtained that the operation of inserting the rectangular battery cells between the spacer plates can be performed more easily.
- the bus bar BB can be insert-molded on the second sub-separator 22. This provides the advantage that the bus bar can be firmly fixed.
- the bus bar BB can be outsert-formed on the second sub-separator 22. This provides the advantage of reducing the cost of fixing the bus bars.
- a pair of arranged end plates 3 and a bind bar 4 for fastening the end plates 3 to each other on the end face of the battery stack 10 can be provided.
- the end plates can be connected by the bind bar to fix the battery stack.
- any of the power supply devices described above can be provided.
- FIG. 1 is a perspective view showing a battery pack according to a first embodiment. It is a disassembled perspective view of the assembled battery of FIG. It is an expansion perspective view which shows the square battery cell of FIG.
- FIG. 7 is an exploded perspective view showing a battery pack according to a second embodiment.
- FIG. 13 is an exploded perspective view showing a battery pack according to a third embodiment.
- FIG. 14 is an exploded perspective view showing a battery pack according to a fourth embodiment.
- FIG. 18 is an exploded perspective view showing a battery pack according to a fifth embodiment. It is a block diagram showing an example which mounts a battery system in a hybrid car which runs with an engine and a motor. It is a block diagram which shows the example which mounts a battery system in the electric vehicle which drive
- each element constituting the present invention may be configured such that a plurality of elements are constituted by the same member and one member is used in common as a plurality of elements, or conversely, the function of one member is realized by a plurality of members It can be shared and realized.
- the contents described in some examples and embodiments may be applicable to other examples and embodiments.
- the assembled battery which concerns on Example 1 is shown in the perspective view of FIG. 1, and the disassembled perspective view of FIG.
- the battery assembly 100 shown in these figures includes a battery stack 10 in which a plurality of rectangular battery cells 1 and spacer plates 2 are stacked, an end plate 3 covering the end face of the battery stack 10, and a binding for fastening the end plates 3 to each other. And a bar 4.
- the battery assembly 100 has a substantially box-like appearance, and a large number of rectangular battery cells 1 are stacked, and held by the end plates 3 from both end faces via the bind bars 4.
- the battery stack 10 is configured by laminating a plurality of square battery cells 1 via the spacer plate 2.
- 18 rectangular battery cells 1 are stacked and connected in series. (Square battery cell 1)
- the rectangular battery cell 1 is composed of an outer can 1A having a rectangular shape whose thickness is thinner than the width, and a sealing plate for closing the top surface of the outer can 1A, that is, the outer can 1A.
- a positive and negative electrode terminal is provided at 1B.
- the positive electrode terminal 1D and the negative electrode terminal 1C are provided at the end of the sealing plate 1B.
- the electrode terminals are electrically connected via the bus bar BB.
- positive and negative electrode terminals are connected by the bus bar BB and connected in series.
- a battery system in which adjacent rectangular battery cells 1 are connected in series with each other can increase the output voltage to increase the output. However, the battery system can also connect adjacent rectangular battery cells in parallel.
- a safety valve 1E is provided at the center of the sealing plate 1B.
- the safety valve opens to release the gas when the internal pressure of the outer can 1A rises.
- a gas duct (not shown) is connected to the safety valve 1E so as to discharge the gas safely.
- the surface of the rectangular battery cell 1 excluding the top surface is subjected to insulation processing. Specifically, the surface of the rectangular battery cell 1 except for the top and bottom surfaces is covered with a covering film.
- the square battery cell 1 is a square battery of a lithium ion secondary battery.
- the rectangular battery cell can also be a secondary battery such as a nickel hydrogen battery or a nickel cadmium battery. (End plate 3)
- a pair of end plates 3 is disposed on both end faces of the battery stack 10 in which the rectangular battery cells 1 and the spacer plates 2 are alternately stacked, and the battery stack 10 is fastened by the pair of end plates 3 .
- the end plate 3 of FIG. 2 has a structure in which a metal plate 32 made of metal such as aluminum is laminated on the outside of a main body 31 made of plastic. However, the end plate may be entirely made of metal or entirely formed of plastic.
- the end plate 3 is provided with projections 33 for fitting the bind bars 4 at the four corners of the surface of the outer metal plate 32.
- the bind bar 4 functions as a fastening means for fastening the rectangular battery cell 1.
- both ends of the frame-shaped metal plate are bent in a U-shape in top view to form a bent piece 41, and a slit 42 for fitting with the projection 33 provided on the end plate 3 is used as the bent piece 41. It is open. Furthermore, a pin hole 43 into which the locking pin 34 provided on the end plate 3 is inserted is also open.
- the bind bar 4 fastens the side surfaces so that the end plate 3 sandwiches the laminated body of the rectangular battery cell 1 and the spacer plate 2 from both end faces. Specifically, the bind bar 4 is inserted into the slit 42 opened in the bent piece 41 by inserting the projection 33 of the end plate 3 into the rectangular battery cell 1 with the spacer plate 2 interposed therebetween. Hold with plate 3 and fix.
- the structure for fixing the bind bar 4 to the end plate 3 is not limited to the above.
- a known fixing structure such as a structure for screwing the bind bar to the end plate using a set screw can be appropriately used.
- the battery stack 10 sandwiches the spacer plate 2 between the stacked rectangular battery cells 1.
- the plurality of rectangular battery cells 1 are stacked so that the main surfaces face each other, and the spacer plate 2 is interposed between the main surfaces to insulate between the rectangular battery cells 1.
- the spacer plate 2 is not separately inserted between the rectangular battery cells, but uses an integrally configured separator body 20.
- the separator body 20 is divided into a plurality of sub-separators. In the first embodiment shown in FIG. 2, the first sub separator 21 and the second sub separator 22 are divided into two. (First sub-separator 21)
- the first sub-separator 21 is composed of a plurality of spacer plates 2 which are substantially parallel and spaced at substantially equal intervals, and a fixing portion 23 which fixes the spacer plate 2.
- the spacer plate 2 corresponds to a conventional single type separator, and is inserted between the rectangular battery cells 1 to electrically and thermally insulate between them. For this reason, the spacer plate 2 is formed to have substantially the same size as the main surface of the rectangular battery cell 1. Furthermore, the spacer plate 2 is not flat but has a shape that is continuously bent in a U-shape in cross section so that a gap is generated in a state where the rectangular battery cell 1 and the spacer plate 2 are in contact with each other.
- the rectangular battery cell 1 can be cooled by passing a cooling gas such as air through the gap.
- a cooling gas such as air
- a cooling gap for cooling the rectangular battery cell 1 can be formed between the spacer plate 2 and the rectangular battery cell 1 when the battery cells 1 are stacked.
- a forced air blowing mechanism is provided (not shown).
- the first sub-separator 21 can also be used as a cooling plate. That is, instead of air cooling, the bottom of battery stack 10 is brought into contact with the first sub-separator, which is a cooling plate, and this cooling plate is cooled by a refrigerant or the like, so that battery stack 10 is directly cooled. Good.
- the cooling plates can be formed like the base portion 21A, and the battery cells can be arranged side by side.
- the spacer plate 2 is a flat one and is inserted between the rectangular battery cells 1.
- the rectangular battery cells 1 may be electrically and thermally isolated.
- the fixing portion 23 fixes the spacer plate 2 so that the distance between the spacer plates 2 is such that the rectangular battery cell 1 can be inserted.
- the fixing portion 23 is formed in a size that covers the bottom surface of the battery stack 10.
- the first sub-separator 21 forms the battery stack 10 by inserting the rectangular battery cell 1 between the spacer plates 2 from the upper side or from the left and right.
- the first sub-separator 21 is preferably integrally formed of an insulating material such as a resin. Thereby, the rectangular battery cell 1 can be reliably positioned and stacked.
- fixing portion 23 on the bottom surface of rectangular battery cell 1
- rectangular battery cell 1 can be aligned in the height direction
- sealing plate 1B on the top surface is arranged almost on the same plane to fix bus bar BB.
- the conventional battery laminate does not have a member for supporting and restricting the rectangular battery cell in the vertical direction, so the upper and lower surfaces may not be aligned, so that fixing with the bus bar or contact with the cooling plate at the bottom surface It was not easy to make it constant.
- the battery pack in the case of an assembled battery for vehicle use, even if the battery pack is narrowed by the bind bar, it may be displaced in the vertical direction due to vibration or shock, and there is also a possibility that the reliability may be deteriorated if the use period is extended.
- the rectangular battery cell 1 since the rectangular battery cell 1 is mounted on the upper surface of the fixing portion 23, there is almost no possibility of such positional deviation, and the rectangular battery cell 1 is stably maintained for a long period of time. The advantage of being able to hold in a fixed posture is obtained.
- the upper surface of the battery stack 10 is covered with the second sub-separator 22 in a state in which the lower surface side of the battery stack 10 is supported by the first sub-separator 21.
- the second sub-separator 22 covers the upper surface of the rectangular battery cell 1 and holds a plurality of bus bars BB connecting the electrode terminals between the rectangular battery cells 1.
- Bus bar BB is preferably fixed in advance to second sub-separator 22. Accordingly, by connecting and fixing the second sub-separator 22 to the first sub-separator 21, the bus bar BB can be fixed at the same time. In particular, since each rectangular battery cell 1 is held in a state of being positioned by the first sub-separator 21, the bus bar BB is similarly held in the positioning state by the second sub-separator 22 to connect these, Each bus bar BB can be arranged at a predetermined position of the rectangular battery cell 1, and an advantage can be obtained that the work of fixing the bus bar BB can be largely saved.
- the bus bar BB can be fixed to the second sub separator 22 by, for example, insert molding or outsert molding.
- the second sub-separator 22 opens the gas discharge port 24 at a position corresponding to the safety valve 1 E of the rectangular battery cell 1 in the center row thereof.
- the gas discharge port 24 is connected to a gas duct (not shown) and discharged, for example, out of the vehicle.
- bus bars BB are fixed to both sides of the central row provided with the gas discharge ports 24 respectively.
- the second sub-separator 22 and the gas duct can be integrally molded and disposed.
- the present invention is not limited to this configuration, and the spacer plate may be fixed to the second sub-separator.
- Example 2 Such an example is shown as Example 2 in FIG.
- the separator body 20 is divided into a first sub-separator 21 and a second sub-separator 22.
- the first sub-separator 21 is constituted only by a base portion 21A corresponding to a fixing portion.
- the second sub-separator 22 has a fixing portion 23 for fixing the spacer plate 2 and projects the spacer plates 2 from below in a posture in which the plurality of spacer plates 2 are separated.
- the other configuration is almost the same as that shown in FIG. 2, and the same members are denoted by the same reference numerals and the detailed description will be omitted.
- the second sub-separator 22 may be divided into a plurality of members.
- Example 3 The battery assembly 300 shown in this figure divides the left and right members into a first bus bar portion 26 and a second bus bar portion 27 from the center row provided with the gas discharge ports 24 at the upper portion of the second sub-separator main body 25. ing.
- Each of the first bus bar portion 26 and the second bus bar portion 27 fixes the bus bar BB.
- the bus bar BB is fixed by insert molding or outsert molding, while the second sub separator body 25 can be formed by ordinary resin molding.
- the production efficiency of the sub-separator can be enhanced.
- conduction with the rectangular battery cell can be separately performed on the positive electrode side and the negative electrode side, and while electrical connection can be reliably performed, the positive electrode side and the negative electrode side can be simultaneously performed. It is also advantageous in that unexpected short circuiting at the time of connection can be avoided and the safety at the time of assembly can be reliably ensured. (Example 4)
- first bus bar portion 26, the second bus bar portion 27, and the second sub-separator main body 25 may not only be integrally formed, but also may be divided. Such an example is shown as Example 4 in FIG.
- the second sub-separator main body 25 is divided into a plurality of sub-separator blocks 28, and the first bus bar portion 26 and the second bus bar portion 27 are each divided into a plurality of bus bar blocks 29 ing.
- sub-separator block 28 is divided into four spacer plates 2 and three gas discharge ports 24 so that three rectangular battery cells 1 can be accommodated, and four sub-separator blocks 28 are separated.
- the second sub-separator main body 25 is configured.
- the bus bar block 29 is also divided into units for fixing the four bus bars BB, and the four bus bar blocks 29 are coupled to form the first bus bar portion 26 and the second bus bar portion 27 respectively.
- another member can also be added in an end surface.
- the end face bus bar portion 29B is connected to the end face of the first bus bar portion 26 and the second bus bar portion 27, and the end face separator 29C is connected to the end face of the second sub separator body 25.
- FIG. 6 is an example, and the number of square battery cells included in the sub separator block 28 and the bus bar block 29 can be appropriately changed to 2 or less or 4 or more. (Example 5)
- the bus bar is fixed to the bus bar block 29 by insert molding, but it is needless to say that the present invention is not limited to this example and may be fixed by outsert molding.
- FIG. 7 Such an example is shown in FIG. 7 as an assembled battery 500 according to the fifth embodiment.
- insert molding by fixing the bus bar BB in the resin of the bus bar block 29, strong fixation is possible.
- outsert molding since the bus bar BB can be fixed after resin molding of the bus bar block 29, the manufacturing cost can be reduced.
- an appropriate type is appropriately selected according to the required specification.
- FIG. 8 shows a vehicle equipped with a battery system for vehicles, and shows an example of a hybrid vehicle HV which travels with both an engine and a motor.
- the hybrid vehicle shown in this figure includes an engine 96 for driving the vehicle and a motor 93 for traveling, a battery system 91 for supplying power to the motor 93, and a generator 94 for charging the battery of the battery system 91.
- the battery system 91 is connected to the motor 93 and the generator 94 via a DC / AC inverter 95.
- the hybrid vehicle travels with both the motor 93 and the engine 96 while charging and discharging the battery of the battery system 91.
- the motor 93 is driven in a region where the engine efficiency is low, for example, at the time of acceleration or low speed traveling to drive the vehicle.
- the motor 93 is powered by the battery system 91 and driven.
- the generator 94 is driven by the engine 96 or driven by regenerative braking when the vehicle is braked to charge the battery of the battery system 91.
- FIG. 9 shows a vehicle equipped with a battery system for the vehicle, and shows an example of an electric vehicle EV which travels only with a motor.
- the electric vehicle shown in this figure includes a traveling motor 93 for traveling the vehicle, a battery system 92 supplying power to the motor 93, and a generator 94 charging the battery of the battery system 92.
- the battery system 92 is connected to the motor 93 and the generator 94 via a DC / AC inverter 95.
- the motor 93 is powered by the battery system 92 and driven.
- the generator 94 is driven by energy when regeneratively braking the vehicle to charge the battery of the battery system 92.
- the assembled battery according to the present invention and a vehicle using the same can be suitably used as a power supply device for a plug-in hybrid electric vehicle, a hybrid electric vehicle, an electric vehicle or the like capable of switching between the EV travel mode and the HEV travel mode.
- Bind bar 10 battery laminate 20: separator body 21: first sub-separator; 21A: base portion 22: second sub-separator 23: fixing portion 24: gas outlet 25: second sub-separator main body 26: first bus bar portion 27 ... second bus bar portion 28 ... sub separator block 29 ... bus bar block 29 B ... end face bus bar portion 29 C ... end face separator 31 ... body portion 32 ... metal plate 33 ... protrusion 34 ... locking pin 41 ... bent piece 42 ... slit 43 ... Pin holes 91, 92: Battery system 93: Motor 94: Generator 95: Inverter 96: Engine BB: Bus bar H , EV ... vehicle
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- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
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- Manufacturing & Machinery (AREA)
- Battery Mounting, Suspending (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
(実施例1)
(角形電池セル1)
(エンドプレート3)
(バインドバー4)
(セパレータ体20)
(第一サブセパレータ21)
(第二サブセパレータ22)
(実施例2)
(実施例3)
(実施例4)
(実施例5)
(電源装置を用いた車両)
1…角形電池セル;1A…外装缶;1B…封口板;1C…負極端子;1D…正極端子
1E…安全弁
2…スペーサ板
3…エンドプレート
4…バインドバー
10…電池積層体
20…セパレータ体
21…第一サブセパレータ;21A…ベース部
22…第二サブセパレータ
23…固定部
24…ガス排出口
25…第二サブセパレータ本体
26…第一バスバー部
27…第二バスバー部
28…サブセパレータブロック
29…バスバーブロック
29B…端面バスバー部
29C…端面セパレータ
31…本体部
32…金属プレート
33…突起
34…周り止めピン
41…折曲片
42…スリット
43…ピン穴
91、92…バッテリシステム
93…モータ
94…発電機
95…インバータ
96…エンジン
BB…バスバー
HV、EV…車両
Claims (11)
- 外形を、幅よりも厚さを薄くした角形とする複数の角形電池セル(1)と、
前記複数の角形電池セル(1)の、主面同士が対向する姿勢となるように積層する電池積層体(10)の、該主面同士の間に介在させて、該角形電池セル(1)間を絶縁するためのセパレータ体(20)と、
を備える組電池であって、
前記セパレータ体(20)は、
前記角形電池セル(1)の主面と略等しい大きさに形成された複数のスペーサ板(2)と、
前記複数のスペーサ板(2)を、前記角形電池セル(1)の積層方向に離間させた状態に固定するための固定部(23)と、
で構成された第一サブセパレータ(21)を備えており、
各スペーサ板(2)同士の隙間は、前記角形電池セル(1)を挿入できる大きさに形成されてなることを特徴とする組電池。 - 請求項1に記載の組電池であって、
前記固定部(23)が、電池積層体(10)の底面を覆うことを特徴とする組電池。 - 請求項1に記載の組電池であって、
前記固定部(23)が、電池積層体(10)の天面を少なくとも部分的に覆うことを特徴とする組電池。 - 請求項1から3のいずれか一に記載の組電池であって、さらに、
前記角形電池セル(1)の上面に設けられた電極端子同士を連結するためのバスバー(BB)を備えており、
前記セパレータ体(20)は、さらに、
前記バスバー(BB)が位置決め状態で固定された、前記電池集合体の上面に設けられる絶縁性の第二サブセパレータ(22)を備えており、
前記第二サブセパレータ(22)を前記第一サブセパレータ(21)に連結することにより、前記バスバー(BB)で前記電極端子同士を接続するよう構成してなることを特徴とする組電池。 - 請求項4に記載の組電池であって、
前記第二サブセパレータ(22)は、
第二サブセパレータ本体(25)と、
前記第二サブセパレータ本体(25)の上面で分割され、前記バスバー(BB)を固定してなるバスバー部で構成されてなることを特徴とする組電池。 - 請求項5に記載の組電池であって、
前記バスバー部はさらに、複数のバスバーブロック(29)に分割されてなることを特徴とする組電池。 - 請求項5に記載の組電池であって、
前記第二サブセパレータ本体(25)はさらに、複数のサブセパレータブロック(28)に分割されてなることを特徴とする組電池。 - 請求項4から7のいずれか一に記載の組電池であって、
前記バスバー(BB)は、前記第二サブセパレータ(22)にインサート成形されてなることを特徴とする組電池。 - 請求項4から7のいずれか一に記載の組電池であって、
前記バスバー(BB)は、前記第二サブセパレータ(22)にアウトサート成形されてなることを特徴とする組電池。 - 請求項1から9のいずれか一に記載の組電池であって、さらに、
前記複数の角形電池セル(1)を、前記スペーサ板(2)を交互に介在させた状態で積層した電池積層体(10)の、積層方向の端面に配置された一対のエンドプレート(3)と、
前記電池積層体(10)端面で前記エンドプレート(3)同士を締結するためのバインドバー(4)と、
を備えることを特徴とする組電池。 - 請求項1から10に記載の組電池を備える車両。
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US13/882,308 US20130273404A1 (en) | 2010-10-30 | 2011-10-28 | Battery pack and vehicle including the same |
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