WO2014064888A1 - 電源装置及び電源装置を備える電動車両並びに蓄電装置、電源装置の製造方法 - Google Patents
電源装置及び電源装置を備える電動車両並びに蓄電装置、電源装置の製造方法 Download PDFInfo
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- WO2014064888A1 WO2014064888A1 PCT/JP2013/005840 JP2013005840W WO2014064888A1 WO 2014064888 A1 WO2014064888 A1 WO 2014064888A1 JP 2013005840 W JP2013005840 W JP 2013005840W WO 2014064888 A1 WO2014064888 A1 WO 2014064888A1
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- power supply
- supply device
- bus bar
- thin
- electrode
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/66—Arrangements of batteries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/64—Constructional details of batteries specially adapted for electric vehicles
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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
- H01M50/204—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
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
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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
- H01M50/50—Current conducting connections for cells or batteries
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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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
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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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/521—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material
- H01M50/522—Inorganic material
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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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/521—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material
- H01M50/526—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material having a layered structure
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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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/547—Terminals characterised by the disposition of the terminals on the cells
- H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/552—Terminals characterised by their shape
- H01M50/553—Terminals adapted for prismatic, pouch or rectangular 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/564—Terminals characterised by their manufacturing process
- H01M50/566—Terminals characterised by their manufacturing process by welding, soldering or brazing
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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
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
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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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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Definitions
- the present invention relates to a power supply device in which a plurality of secondary battery cells are stacked, an electric vehicle including the power supply device, a power storage device, and a method for manufacturing the power supply device, and more particularly to an electric vehicle such as a hybrid vehicle, a fuel cell vehicle, an electric vehicle, and an electric motorcycle.
- a power supply device for driving to drive a vehicle mounted on a vehicle and a stationary power supply device for storing electricity for home use and factory use have been developed.
- a large number of rechargeable secondary battery cells are connected in series to form a battery stack, and a plurality of battery stacks are connected in series as necessary. Or they are connected in parallel.
- a battery stack for example, a plurality of rectangular battery cells are stacked with a spacer interposed therebetween, and fastened with a bind bar.
- the electrode terminals of adjacent battery cells are connected by a bus bar.
- the bus bar is welded to the electrode terminal by laser welding (see Patent Document 1).
- Such battery cells have variations such as battery cell manufacturing tolerances. Further, as the plurality of battery cells are stacked, such variations are accumulated, and the error of the fixed portion of the electrode terminal increases. In order to absorb such an error, a method has been adopted in which a long hole is opened in the bus bar 2230 as shown in FIG. 25 and a welding ring 2235 is interposed to be welded to the electrode terminal 2220 of the battery cell 2201.
- the welding ring is arranged at a predetermined position with a parts feeder, the position is imaged with a camera, the position is adjusted by image processing, and then the laser beam is irradiated to perform welding. Has been adopted.
- this method has a problem that it takes time to arrange and position the weld ring.
- the number of battery cells used in power supply devices has increased, and as a result, the number and positions of welding cells have increased, and as a result, the reduction of tact time during manufacturing has become a problem. ing.
- JP 2011-60623 A JP 2012-138190 A JP 2008-146944 A JP 2009-231145 A
- a main object of the present invention is to provide a power supply device capable of welding in a shorter time without using a welding ring, a vehicle including the power supply device, a power storage device, and a method for manufacturing the power supply device.
- the power supply device includes a plurality of battery cells including electrode portions, and a bus bar for connecting the electrode portions of the battery cells. Is formed with a thin portion having a thickness thinner than that of other portions at least at a part of the edge thereof, and can be welded to the electrode portion of the battery cell with the thin portion.
- the edge of the bus bar is formed in a concave shape, and the thin portion can be formed in the concave portion.
- the width of the thin portion can be made smaller than 1 ⁇ 2 of the electrode portion.
- the electrode portion includes a pedestal portion and an electrode terminal protruding from the pedestal portion, and the thin portion is disposed on a side surface of the electrode terminal.
- the electrode terminal has a columnar shape, and the concave portion can be formed in a half moon shape along the columnar shape of the electrode terminal.
- the radius of the half-moon-shaped portion can be made larger than the radius of the electrode terminal. According to the above configuration, an advantage that the position of the electrode terminal is arranged in the half-moon-shaped portion can be adjusted to absorb the displacement of the electrode terminal.
- the thin portion of the bus bar can be formed to be elastically deformable.
- the bus bar can be bent into a mountain shape in a sectional view.
- the thin portion of the bus bar can be bent in the direction opposite to the mountain-shaped bending direction.
- the thin portion can be welded to the electrode portion with a fiber laser.
- the thin-walled portion can be accurately melted with a high-power laser beam having a thin beam diameter, and the reliability of welding can be improved.
- the bus bar can be a clad material joined with dissimilar metals.
- a traveling motor that is supplied with power from the power supply device, a vehicle main body including the power supply device and the motor, And a wheel driven by a motor to cause the vehicle body to travel.
- the power supply device includes a power supply controller that controls charging / discharging of the power supply device, and the power supply controller enables charging of the power supply device with external power, and It can be controlled to charge the power supply device.
- the manufacturing method of a power supply device is a manufacturing method of a power supply device provided with the some battery cell provided with an electrode part, and the electroconductive bus bar which connects the electrode parts of each battery cell, Comprising: Said bus bar Is a top surface of the battery cell stack in which the plurality of battery cells are stacked in a state where the cross-sectional view is bent into a mountain shape, and on each upper surface of the opposing electrode portion between adjacent battery cells, Arranging a thin portion formed on at least a part of an edge of the bus bar; irradiating the thin portion with laser light; penetrating the thin portion and melting it together with the electrode portion; and welding them. And a step of performing. Thereby, at the time of welding a bus bar, the thin part can be directly welded to the electrode part, and there is no need to use a separate member such as a welding ring, and the advantage that the welding process can be saved can be obtained.
- FIG. 6A is a plan view of the bus bar of FIG. 5
- FIG. 6B is a vertical cross-sectional view of the bus bar of FIG. 5 taken along the line VIB-VIB.
- FIG. 6A is a plan view of the bus bar of FIG. 5
- FIG. 6B is a vertical cross-sectional view of the bus bar of FIG. 5 taken along the line VIB-VIB.
- FIG. 6 is a schematic plan view of a bus bar according to Embodiment 2.
- FIG. 6 is a schematic plan view of a bus bar according to Embodiment 3.
- FIG. 11A is a plan view of the bus bar according to Embodiment 4, and
- FIG. 11B is a vertical cross-sectional view of the bus bar in FIG. 11A along the line XIB-XIB. It is a top view which shows the power supply device which connected the battery cell in parallel. It is a top view which shows the example of a connection of the bus-bar which concerns on a comparative example. It is a top view which shows the example of a connection of the bus-bar which concerns on embodiment.
- 10 is a schematic plan view of a bus bar according to Embodiment 5.
- FIG. 5 is a schematic plan view of a bus bar according to Embodiment 5.
- FIG. 17A is a plan view of the bus bar according to Embodiment 3
- FIG. 17B is a vertical sectional view of the bus bar in FIG. 17A along the line XVIIB-XVIIB.
- FIG. 6 is a vertical sectional view of a bus bar according to a fourth embodiment.
- FIG. 19A is a plan view showing a bus bar according to Embodiment 8
- FIG. 19B is a vertical sectional view taken along line XIXB-XIXB in FIG. 19A.
- 20A is a plan view showing the bus bar according to Embodiment 9, and FIG.
- 20B is a vertical sectional view taken along line XXB-XXB in FIG. 20A. It is a top view which shows the position which laser-welds the bus-bar of FIG. It is a block diagram which shows the example which mounts a power supply device in the hybrid vehicle which drive
- the embodiment described below exemplifies a power supply device, an electric vehicle including the power supply device, a power storage device, and a method of manufacturing the power supply device for embodying the technical idea of the present invention.
- the manufacturing method of the power supply device, the electric vehicle including the power supply device, the power storage device, and the power supply device is not specified as follows.
- the dimensions, materials, shapes, relative arrangements, and the like of the constituent members described in the embodiments are not intended to limit the scope of the present invention only to the description unless otherwise specified. It is just an example. Note that the size, positional relationship, and the like of the members shown in each drawing may be exaggerated for clarity of explanation.
- each element constituting the present invention may be configured such that a plurality of elements are constituted by the same member and the plurality of elements are shared by one member, and conversely, the function of one member is constituted by a plurality of members. It can also be realized by sharing.
- the contents described in some examples and embodiments may be used in other examples and embodiments.
- FIG. 1 is an exploded perspective view of the power supply apparatus 100 according to Embodiment 1 of the present invention
- FIG. 2 is an exploded perspective view of the power supply apparatus 100 of FIG. 1
- FIG. 3 is a schematic plan view of the power supply apparatus 100 of FIG.
- FIG. 4 shows a schematic plan view of the bus bar holder 8 removed from FIG.
- the power supply device 100 shown in these drawings includes a plurality of battery cells 1, spacers 50 interposed between the battery cells 1, and battery stacks 2 in which the battery cells 1 and the spacers 50 are alternately stacked. End plates 3 respectively disposed on the end surfaces and fastening means 4 for fastening the end plates 3 to each other are provided. (Battery cell 1)
- the battery cell 1 is a square battery that is wider than the thickness, in other words, is thinner than the width.
- a plurality of the battery cells 1 are stacked in the thickness direction to form a battery stack 2.
- Each battery cell 1 is a lithium ion secondary battery.
- the battery cell may be a secondary battery such as a nickel metal hydride battery or a nickel cadmium battery.
- the battery cell 1 of FIG. 2 is a battery having a rectangular shape with both wide surfaces, and the battery stack 2 is formed by laminating both surfaces so as to face each other.
- Each battery cell 1 is provided with positive and negative electrode portions 20 at both end portions of the sealing plate 10 on the upper surface, and a gas discharge port 12 of the gas discharge valve 11 is provided at the center portion.
- Each electrode portion 20 includes a pedestal portion 22 and an electrode terminal 21 protruding from the pedestal portion 22.
- the electrode terminal 21 is formed in a cylindrical shape.
- the rectangular battery cell 1 has a sealing plate 10 that seals the opening of an outer can that is formed by pressing a metal plate into a cylindrical shape that closes the bottom.
- the sealing plate 10 is a flat metal plate, and its outer shape is the shape of the opening of the outer can.
- the sealing plate 10 is laser welded and fixed to the outer peripheral edge of the outer can so as to airtightly close the opening of the outer can.
- the sealing plate 10 fixed to the outer can has positive and negative electrode portions 20 fixed to both ends thereof, and a gas discharge port 12 is provided between the positive and negative electrode portions 20.
- a gas discharge valve 11 is provided inside the gas discharge port 12.
- the spacer 50 is made of an insulating member in order to insulate the outer cans of the battery cells 1 from each other.
- the end plate 3 is made of a highly rigid member such as a metal.
- the fastening means 4 is similarly composed of a highly rigid metal plate or the like.
- the metal plate is bent in a U shape in a sectional view, and the end portion is fixed to the end plate 3 by screwing or the like.
- the fastening means can be used not only for fastening the battery stack 2 but also as a member for fixing the gas duct 6 to the upper surface of the battery stack 2.
- the second fastening means 5 is provided on the upper surface of the battery stack 2.
- a 2nd fastening means can be abbreviate
- the gas duct can be omitted. (Bus bar holder 8)
- the bus bar holder 8 is fixed to the upper surface of the battery stack 2.
- the bus bar holder 8 is made of an insulating member, and covers the upper surface of the battery cell 1 in order to avoid unintentional conduction between the bus bar 30 and the battery cell 1.
- the bus bar holder 8 has an opening window 24 for exposing the electrode terminal 21 in the state of being fixed to the upper surface of the battery stack 2 in order to electrically connect each electrode terminal 21. Thereby, the electrode terminal 21 is exposed from the opening window 24 while insulating the upper surface of the battery cell 1 except for the part necessary for the electrical connection, thereby maintaining the electrical connection between the electrode terminals 21.
- the bus bar holder 8 is fixed by the second fastening means 5 as shown in the exploded perspective view of FIG.
- the second fastening means 5 is pressed from the upper surface of the bus bar holder 8, and the end of the second fastening means 5 is screwed to the upper surface of the end plate 3.
- the bus bar holder 8 is fixed to the upper surface of the battery stack 2 via the second fastening means 5.
- the bus bar holder fixing structure is not limited to this configuration.For example, the bus bar holder is directly screwed to the end plate, or a fitting structure such as a claw is provided on the bus bar holder to be fitted to the bus bar or the fastening means. Other known fixing structures can be used as appropriate. (Gas duct 6)
- the gas duct 6 is a hollow cylindrical body that extends in the stacking direction of the battery cells 1 and opens a duct discharge portion 6x at an end portion.
- a connection opening is opened at a position corresponding to the gas discharge valve 11 of each battery cell 1.
- Each of the connection openings communicates with the gas discharge port 12 in a state where the gas discharge valve 11 is opened, and the high-pressure gas discharged from the battery cell 1 is guided into the gas duct 6. Further, the inside of the gas duct 6 is closed at one end, and the duct discharge portion 6x is opened at the other end.
- the duct discharge part 6x is connected with a gas discharge path, and discharges gas safely to the outside.
- the gas duct 6 is positioned on the upper surface of the battery stack 2 so that each connection opening communicates with the gas discharge valve.
- the cross section in the extending direction of the gas duct 6 is formed in a horizontally long rectangular shape.
- the internal shape of the gas duct can be any shape such as a tubular shape or an inverted U shape or U shape.
- the second fastening means 5 also serves as a fixing structure for the gas duct 6. That is, the flange portion 6a is formed around the gas duct 6, an opening is provided in the second fastening means 5, and the second fastening means 5 is covered from above the gas duct 6 so that the gas duct 6 passes through the opening portion.
- the gas duct 6 is fixed to the upper surface of the bus bar holder 8 by pressing the peripheral flange 6 a around the opening 6. (Circuit board 9)
- a circuit board 9 on which an electronic circuit is mounted is fixed on the upper surface of the gas duct 6.
- the electronic circuit mounted on the circuit board 9 can be a protection circuit or a control circuit for monitoring the voltage of the battery cell 1 or the like.
- the circuit board 9 is shorter than the length of the gas duct 6 in the longitudinal direction, and is wider than the gas duct 6 in the width direction of the gas duct 6 intersecting the longitudinal direction. (Voltage detection line)
- a voltage detection line for detecting the voltage is fixed to each bus bar 30.
- the voltage detection line is composed of a conductive lead, a harness, a flexible printed circuit board (FPC), or the like, and has one end connected to the circuit board.
- FPC flexible printed circuit board
- the voltage detection line configured by FPC is fixed to the upper surface of the bus bar 30.
- Each battery cell 1 includes a pair of positive and negative electrode portions 20.
- the electrode portions 20 of adjacent battery cells 1 are connected to each other by a conductive bus bar 30.
- the bus bar 30 can be connected in series or in parallel.
- 12 battery cells are connected in series by connecting the positive electrode terminal and the negative electrode terminal of the adjacent battery cell 1 with the bus bar 30.
- the bus bar 30 is melted and fixed to the electrode unit 20 by laser welding.
- the laser light for example, a fiber laser can be preferably used.
- the fiber laser has the advantage that the spot diameter can be made smaller and the output is higher than that of a normal YAG laser or the like. For this reason, it is suitable for precise laser welding. (Bus bar 30)
- the bus bar 30 is preferably made of a metal plate having excellent conductivity and suitable for laser welding.
- a perspective view of the bus bar 30 is shown in FIG. 5, and a plan view and a cross-sectional view are shown in FIGS. 6A and 6B, respectively.
- the bus bar 30 is formed of a plate material having a substantially uniform thickness.
- a thick low-resistance portion made of a metal plate having high conductivity is used.
- the thick part 31 of the bus bar 30 thus configured is a clad material in which different metal plates are combined so that the positive electrode part 20 and the negative electrode part 20 of the battery cell 1 can be easily welded.
- the positive electrode is often an aluminum plate and the negative electrode is a copper plate.
- the bus bar 30 is uniformly formed of either an aluminum plate or a copper plate, either the positive electrode or the negative electrode may be bonded between different metals of copper and aluminum, and the strength may be weakened. Therefore, the bus bar 30 is composed of a clad material that combines a copper plate and an aluminum plate, and the aluminum plate is brought into contact with the positive electrode and the copper plate is brought into contact with the negative electrode so as to be electrically connected to each other, so that the same kind of metals are welded to each other and reliability of joining Can be increased. (Thin part 32)
- a thin portion 32 is partially formed at both ends of the thick portion 31 of the bus bar 30.
- This thin portion includes a welded portion 33 to be welded to the flat surface of the pedestal portion.
- the thin portion 32 is formed thinner than the thick portion 31 at the center of the bus bar 30 as shown in the cross-sectional view of FIG. 6B in order to facilitate melting when the bus bar 30 is welded to the electrode portion 20.
- the thin portion 32 is formed in a step shape in a cross-sectional view. The thinner the bus bar, the easier it is to weld, while the current resistance increases.
- the thin-walled portion is formed in a stepped shape in which the edge of the bus bar is cut out on the upper surface side. In this way, by forming the thinned portion in a shape where the upper surface side is cut out rather than from the lower surface side of the bus bar edge, the lower surface side can be brought into contact with the pedestal portion to be welded over a wide area, and the thinned portion is laser It can be reliably welded by light penetration.
- the edge of the bus bar 30 is preferably not a straight line but a non-linear shape.
- the distance of the welding part 33 can be lengthened and intensity
- it can be recessed in a plan view so that the edge is turned.
- the electrode terminal 21 can be used as a guide when positioning the bus bar 30.
- the bus bar 30 is arranged by the parts feeder, the circular shape of the end face of the electrode terminal 21 is detected by image processing, and the bus bar 30 can be easily arranged along this.
- both ends of the bus bar 30 in the longitudinal direction are formed with a semi-circular thin portion 32 with a constant width d along the periphery of the electrode terminal 21.
- the radius of the curved portion is preferably made larger than the radius of the electrode terminal 21. Accordingly, the electrode terminal 21 can be disposed in the concave portion 34. That is, as shown in the plan view of FIG. 4, the contact area between the back surface of the thick portion 31 and the pedestal portion 22 can be increased by the amount that allows the thick portion 31 to be close to the electrode terminal 21.
- the distance between the electrode terminals 21 varies when the battery cells are stacked.
- the edge of the bus bar 30 is formed as the concave portion 34, so that the positional deviation of the electrode terminal 21 can be absorbed. That is, when the electrode terminal 21 is arranged in the concave portion 34, the gap between the electrode terminal 21 and the edge of the bus bar 30 is absorbed by designing in advance so that a slight gap is formed between the two. it can.
- the distance to be welded can be increased as compared with the case where the edge of the bus bar 30 is linear as described above, and the joint strength is correspondingly increased. Be improved.
- the edge of the bus bar 30 concave, it can be used for both absorbing the displacement of the electrode terminal 21 and improving the bonding strength.
- the concave portion 34 of the thin portion 32 is set as an open end, it is possible to cope with the limit especially when the distance between the electrode terminals 21 is longer than the expected value. That is, as shown in FIG. 25, in the method of forming a long hole in the bus bar and adjusting with a welding ring, only the length of the long hole can be adjusted. Therefore, for example, the battery cell expands to increase the distance between the battery cells. Then, there was a possibility that the bus bar was broken. On the other hand, if it is the concave part 34 made into the open end without making it a closed hole shape, such a fracture
- the thin portion 32 is irradiated with laser light.
- the laser beam is applied to a region indicated by cross hatching in the plan view of FIG. Further, the laser light is irradiated from above the bus bar 30b as shown by a thick line in the cross-sectional view of FIG. Thereby, the thin portion 32 is melted and welded to the lower pedestal portion 22.
- the laser beam is irradiated so as to penetrate the thin portion 32 and melt the pedestal portion 22.
- a fiber laser can be suitably used as described above. Note that it is not necessary to completely melt all of the thin portion 32, it is sufficient that the thin portion 32 is melted to such an extent that sufficient welding is realized, and it is sufficient that a part of the thin portion 32 remains without being melted. (Embodiments 2 and 3)
- the edge of the bus bar is formed in a semicircular shape.
- the shape of the edge of the bus bar is not limited to this, and a shape other than a straight line can be used as appropriate.
- the electrode terminal 21B has a hexagonal shape in plan view, and the concave portion of the end of the bus bar 30B has an inverted isosceles trapezoidal shape accordingly.
- a thin portion 32B is formed in the concave portion.
- the electrode terminal 21C has a quadrangular shape in plan view, and the concave portion of the edge of the bus bar 30C is also opened in a U-shape accordingly. A portion 32C is formed.
- the planar view shape of the electrode terminal 21 is not limited to a cylindrical shape, and any shape such as a polygonal shape or an elliptical shape can be used, and the shape of the concave portion of the edge of the bus bar is also corresponding to this. It can be appropriately modified.
- the concave portion is formed at only one place in the approximate center of the end surface of the bus bar has been described. However, two or more concave portions can be formed.
- thin portions may also be provided at a plurality of locations. Thereby, the distance of the welding part 33 can be lengthened.
- the plurality of concave portions may not be all the same shape, but may be formed in different shapes and patterns.
- the central concave portion can be formed large, and smaller concave portions can be formed on both sides thereof.
- it may be formed in a wave shape or a saw blade shape. In this way, the effect of increasing the joint strength by increasing the distance welded to the base portion 22 is obtained. (Embodiment 4)
- the thin portion is partially formed on the edge of the thick portion 31 of the bus bar.
- a thin portion can also be formed on the entire surface of the edge of the bus bar.
- FIG. 11 Such an example is shown in FIG. 11 as a second embodiment.
- the bus bar 30D shown in this figure has a width a from the end edge of the thick portion 31 to a thin portion 32D.
- the width of the thin portion 32 ⁇ / b> D is preferably smaller than 1 ⁇ 2 of the width of the pedestal portion 22.
- a concave portion can be formed at the center of the thin portion 32D as in the first embodiment. Thereby, as described above, the displacement of the electrode terminal 21 can be absorbed.
- this bus bar 30 connects the electrode portions of the stacked battery cells, there is an advantage that even if the positions of the electrode portions vary in the state where the battery cells are stacked, it can be handled. That is, as shown in the plan view of FIG. 13, when three or more (six in the example of FIG. 13) battery cells 1 are connected by one bus bar 1330, the bus bar is inserted to insert each electrode terminal 21. Due to the restriction of the size of the connection hole opened at 1330, there was a limit to the correspondence of the displacement of the electrode terminal 21 in the horizontal direction. Furthermore, since the battery cell 1 may be displaced in the height direction, it becomes more difficult to cope with it.
- the configuration in which the shape of the concave portion of the edge of the bus bar is formed according to the shape of the electrode terminal has been described.
- the electrode terminal protruding from the pedestal portion is not necessarily essential in welding with the bus bar, and can be omitted. That is, in the above embodiment, the bus bar is welded to the pedestal portion instead of the electrode terminal.
- the electrode terminal is not directly welded in the present embodiment. For this reason, an electrode terminal is not necessarily essential, and it is also possible to omit this.
- FIG. 15 is a power supply device 500 according to the fifth embodiment.
- the thin portion 32 of the bus bar 30 can be fixed at an arbitrary position on the pedestal portion 22 'regardless of the electrode terminals.
- the electrode terminal 21 is used as a positioning guide as described above. That is, the shape of the electrode terminal 21 is detected by image processing, and the bus bar 30 is arranged with this position as a reference. Thus, the electrode terminal 21 functions as a positioning guide that determines the fixing position of the bus bar 30. If the electrode terminal is not provided as in the fifth embodiment, as another positioning guide instead of the electrode terminal, for example, a mark is engraved and printed at an arbitrary position of the pedestal portion, or the rectangular outline of the pedestal portion Etc. can be used. Furthermore, as shown in FIG. 20 to be described later, one or more holes may be opened in the bus bar to form a positioning guide. (Embodiment 6)
- both ends of the bus bar 30E by bending the thick portion 31 into a mountain shape, both ends thereof can be protruded relatively downward.
- the bus bar is made of a clad material of a different metal as described above, it can be easily formed in such a mountain shape by slightly inclining the surfaces where the different metals are joined.
- a bus-bar with respect to a battery cell using a jig
- the edge of the bus bar is elastically deformed by the applied stress, and the gap with the pedestal portion can be eliminated.
- the edge of the bus bar 30E is bent into a valley shape opposite to the mountain shape as shown in the cross-sectional view of FIG. 17B. As a result, the thin portion 32E at the edge of the bus bar 30E is easily elastically deformed.
- the bus bar 30F shown in the cross-sectional view of FIG. 18 as Embodiment 7 has a shape in which the central portion is curved. Even in such a shape, the effect that the thin portion 32F can be elastically deformed as described above is obtained. (Embodiment 8)
- the thick wall portion of the bus bar can be bent, but also the edge of the bus bar can be bent in the opposite direction.
- FIG. 19 Such an example is shown in FIG. 19 as an eighth embodiment.
- the thin-walled portion 32G can be bent with the pedestal portion in a wider area, and a gap is generated during laser welding. You can avoid that.
- the battery cells constituting the battery stack have a problem of being displaced up and down during assembly, but according to this configuration, the thin part is formed in an arc shape, so that the pedestal part is located near the bent part. Can be contacted.
- the present invention is not limited to this configuration, and the welded portion can be provided linearly along the bent portion of the thin portion.
- FIGS. 20 and 21 Such an example is shown in FIGS. 20 and 21 as a ninth embodiment.
- the bus bar 30H can smoothly weld the welded portion by scanning the laser beam linearly during laser welding.
- the distance for laser welding is shorter than in the example in which the welded portion 33 is concave, the area of the welded portion is reduced and the strength is reduced. Therefore, as shown by a broken line in the plan view of FIG.
- the area of the welded portion 33H is gained to increase the bonding strength. Can be improved.
- the plurality of welded portions 33H are provided by being shifted from the bent portion toward the edge of the bus bar 30H.
- the weld strength can be similarly lengthened and the joint strength can be improved by meandering the welded portion in a wavy or zigzag shape along the bent portion of the thin-walled portion. (Bus bar positioning guide 36)
- a positioning guide can be formed on the bus bar.
- the positioning guide for example, a concave shape formed on the edge of the bus bar can be used.
- one or more through holes may be opened in the bus bar.
- the bus bar 30H has a round hole-like through hole formed in the thin portion 32H at the end edge.
- a through hole is opened at each corner of the edge of the bus bar 30H.
- a second through hole 37 is also opened at the center of the thick portion 31H of the bus bar 30H.
- the second through hole 37 is distinguished from these by making the diameter larger than the through hole.
- a notch can be formed in a part of the outer shape of the bus bar to regulate the posture and the top and bottom.
- a U-shaped recess 38 is formed in the upper left of the thick portion 31H of the bus bar 30H. Using the depression 38 as a clue, the vertical posture of the point-symmetric bus bar 30H can be specified.
- the above power supply apparatus can be used as a vehicle-mounted power supply.
- a vehicle equipped with a power supply device an electric vehicle such as a hybrid vehicle or a plug-in hybrid vehicle that runs with both an engine and a motor, or an electric vehicle that runs only with a motor can be used, and is used as a power source for these vehicles. . (Power supply for hybrid vehicles)
- FIG. 22 shows an example in which a power supply device is mounted on a hybrid vehicle that runs with both an engine and a motor.
- a vehicle HV equipped with the power supply device shown in this figure includes an engine 96 and a travel motor 93 that travel the vehicle HV, a power supply device 100 that supplies power to the motor 93, and a generator that charges a battery of the power supply device 100.
- 94 a vehicle main body 90 on which the power supply device 100 and the motor 93 are mounted, and wheels 97 that are driven by the motor 93 and run the vehicle main body.
- the power supply apparatus 100 is connected to a motor 93 and a generator 94 via a DC / AC inverter 95.
- the vehicle HV travels by both the motor 93 and the engine 96 while charging / discharging the battery of the power supply device 100.
- the motor 93 is driven to drive the vehicle when the engine efficiency is low, for example, during acceleration or low-speed driving.
- the motor 93 is driven by power supplied from the power supply device 100.
- the generator 94 is driven by the engine 96 or is driven by regenerative braking when the vehicle is braked to charge the battery of the power supply device 100. (Power supply for electric vehicles)
- FIG. 23 shows an example in which a power supply device is mounted on an electric vehicle that runs only with a motor.
- a vehicle EV equipped with the power supply device shown in this figure includes a traveling motor 93 for traveling the vehicle EV, a power supply device 100 that supplies power to the motor 93, and a generator 94 that charges a battery of the power supply device 100.
- the power supply apparatus 100 is connected to a motor 93 and a generator 94 via a DC / AC inverter 95.
- the motor 93 is driven by power supplied from the power supply device 100.
- the generator 94 is driven by energy when regeneratively braking the vehicle EV and charges the battery of the power supply device 100. (Power storage device for power storage)
- this power supply device can be used not only as a power source for moving bodies but also as a stationary power storage facility.
- a power source for home and factory use a power supply system that is charged with sunlight or midnight power and discharged when necessary, or a streetlight power supply that charges sunlight during the day and discharges at night, or during a power outage It can also be used as a backup power source for driving signals.
- FIG. The power supply apparatus 100 shown in this figure forms a battery unit 82 by connecting a plurality of battery packs 81 in a unit shape. Each battery pack 81 has a plurality of battery cells connected in series and / or in parallel. Each battery pack 81 is controlled by a power controller 84.
- the power supply apparatus 100 drives the load LD after charging the battery unit 82 with the charging power supply CP. For this reason, the power supply apparatus 100 includes a charging mode and a discharging mode.
- the load LD and the charging power source CP are connected to the power supply device 100 via the discharging switch DS and the charging switch CS, respectively.
- ON / OFF of the discharge switch DS and the charge switch CS is switched by the power supply controller 84 of the power supply apparatus 100.
- the power supply controller 84 switches the charging switch CS to ON and the discharging switch DS to OFF to permit charging from the charging power supply CP to the power supply apparatus 100.
- the power controller 84 turns off the charging switch CS and turns on the discharging switch DS to discharge.
- the mode is switched to permit discharge from the power supply apparatus 100 to the load LD.
- the charge switch CS can be turned on and the discharge switch DS can be turned on to supply power to the load LD and charge the power supply device 100 at the same time.
- the load LD driven by the power supply device 100 is connected to the power supply device 100 via the discharge switch DS.
- the power supply controller 84 switches the discharge switch DS to ON, connects to the load LD, and drives the load LD with the power from the power supply apparatus 100.
- the discharge switch DS a switching element such as an FET can be used. ON / OFF of the discharge switch DS is controlled by the power supply controller 84 of the power supply apparatus 100.
- the power controller 84 also includes a communication interface for communicating with external devices.
- the host device HT is connected according to an existing communication protocol such as UART or RS-232C. Further, if necessary, a user interface for the user to operate the power supply system can be provided.
- Each battery pack 81 includes a signal terminal and a power supply terminal.
- the signal terminals include a pack input / output terminal DI, a pack abnormality output terminal DA, and a pack connection terminal DO.
- the pack input / output terminal DI is a terminal for inputting / outputting signals from other pack batteries and the power supply controller 84
- the pack connection terminal DO is for inputting / outputting signals to / from other pack batteries which are child packs.
- the pack abnormality output terminal DA is a terminal for outputting the abnormality of the battery pack to the outside.
- the power supply terminal is a terminal for connecting the battery packs 81 in series and in parallel.
- a power supply device, an electric vehicle including the power supply device, a power storage device, and a method for manufacturing the power supply device according to the present invention include a plug-in hybrid electric vehicle, a hybrid electric vehicle, and an electric vehicle that can switch between an EV traveling mode and an HEV traveling mode. It can utilize suitably as power supplies, such as. Also, a backup power supply device that can be mounted on a rack of a computer server, a backup power supply device for a wireless base station such as a mobile phone, a power storage device for home use and a factory, a power supply for a street light, etc. Also, it can be used as appropriate for applications such as a backup power source such as a traffic light.
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Abstract
Description
(実施の形態1)
(電池セル1)
(バスバーホルダ8)
(ガスダクト6)
(回路基板9)
(電圧検出線)
(ファイバーレーザ)
(バスバー30)
(薄肉部32)
(実施の形態2、3)
(実施の形態4)
(実施の形態5)
(実施の形態6)
(実施の形態7)
(実施の形態8)
(実施の形態9)
(バスバー位置決めガイド36)
(ハイブリッド車用電源装置)
(電気自動車用電源装置)
(蓄電用電源装置)
1…電池セル
2…電池積層体
3…エンドプレート
4…締結手段
5…第二締結手段
6…ガスダクト;6a…鍔部;6x…ダクト排出部
8…バスバーホルダ
9…回路基板
10…封口板
11…ガス排出弁
12…ガス排出口
20…電極部
21、21B、21C…電極端子
22、22’…台座部
24…開口窓
30、30B、30C、30D、30E、30F、30G、30H…バスバー
31、31H…厚肉部
32、32B、32C、32D、32E、32F、32G、32H…薄肉部
33、33H…溶接部
34…凹状部分
36…バスバー位置決めガイド
37…第二貫通孔
38…窪み
50…スペーサ
81…電池パック
82…電池ユニット
84…電源コントローラ
85…並列接続スイッチ
90…車両本体
93…モータ
94…発電機
95…DC/ACインバータ
96…エンジン
97…車輪
1330…バスバー
2201…電池セル
2220…電極端子
2230…バスバー
2235…溶接リング
EV、HV…車両
LD…負荷
CP…充電用電源
DS…放電スイッチ
CS…充電スイッチ
OL…出力ライン
HT…ホスト機器
DI…パック入出力端子;DA…パック異常出力端子;DO…パック接続端子
Claims (22)
- 電極部を備える複数の電池セルと、
前記複数の電池セルの電極部同士を接続するバスバーと
を備える電源装置であって、
前記電極部は、前記バスバーと対向する平坦面を有する台座部を含み、
前記バスバーは、
該バスバーの中央に形成される厚肉部と、
該バスバーの端縁の少なくとも一部に形成され、前記厚肉部よりも厚さを薄くした薄肉部と
を含み、
前記薄肉部は、前記台座部の平坦面と溶接される溶接部を含むことを特徴とする電源装置。 - 請求項1に記載の電源装置であって、
前記薄肉部が、前記バスバーの端縁を、断面視において上面側を切り欠いた段差状に形成されてなることを特徴とする電源装置。 - 請求項1又は2に記載の電源装置であって、
前記薄肉部を、平面視において前記バスバーの端縁から窪ませた凹状に形成してなることを特徴とする電源装置。 - 請求項1から3のいずれか一に記載の電源装置であって、
前記薄肉部の幅が、前記電極部の1/2よりも小さいことを特徴とする電源装置。 - 請求項1から4のいずれか一に記載の電源装置であって、
前記電極部が、前記台座部から突出された電極端子とを備えており、
前記電極端子の側面に前記薄肉部を配置して、前記台座部と固定してなることを特徴とする電源装置。 - 請求項3から5のいずれか一に記載の電源装置であって、
前記電極端子が円柱状であり、
前記凹状部分を、前記電極端子の円柱状に沿う半月状に形成してなることを特徴とする電源装置。 - 請求項6に記載の電源装置であって、
前記半月状部分の半径を、前記電極端子の半径よりも大きくしてなることを特徴とする電源装置。 - 請求項1から7のいずれか一に記載の電源装置であって、
前記バスバーの薄肉部は、弾性変形可能に形成してなることを特徴とする電源装置。 - 請求項1から8のいずれか一に記載の電源装置であって、
前記バスバーは断面視山形状に折曲されてなることを特徴とする電源装置。 - 請求項9に記載の電源装置であって、
前記バスバーの薄肉部が、断面視において前記山形状折曲方向とは逆向きに折曲されてなることを特徴とする電源装置。 - 請求項10に記載の電源装置であって、
前記バスバーの薄肉部と厚肉部との界面近傍を、断面視において前記山形状折曲方向とは逆向きに折曲してなることを特徴とする電源装置。 - 請求項9から11のいずれか一に記載の電源装置であって、
前記溶接部を、前記薄肉部と厚肉部との境界よりも端縁側に位置させてなることを特徴とする電源装置。 - 請求項3から12のいずれか一に記載の電源装置であって、
前記溶接部を、前記薄肉部の折曲部分に沿って設けてなることを特徴とする電源装置。 - 請求項13に記載の電源装置であって、
前記溶接部を、前記薄肉部の折曲部分に沿って複数本設けてなることを特徴とする電源装置。 - 請求項3から12のいずれか一に記載の電源装置であって、
前記溶接部を、前記凹状部分に沿って設けてなることを特徴とする電源装置。 - 請求項1から15のいずれか一に記載の電源装置であって、
前記バスバーは、その上面にバスバーの位置決め用のガイドを形成してなることを特徴とする電源装置。 - 請求項16に記載の電源装置であって、
前記バスバー位置決めガイドが、前記バスバーに開口された一以上の貫通孔であることを特徴とする電源装置。 - 請求項1から17のいずれか一に記載の電源装置であって、
前記薄肉部を前記電極部にファイバーレーザで溶接してなることを特徴とする電源装置。 - 請求項1から18のいずれか一に記載の電源装置であって、
前記バスバーを、異種金属を接合したクラッド材としてなることを特徴とする電源装置。 - 請求項1から19のいずれか一に記載の電源装置を備える電動車両であって、
前記電源装置から電力供給される走行用のモータと、
前記電源装置及び前記モータを搭載してなる車両本体と、
前記モータで駆動されて前記車両本体を走行させる車輪と
を備えることを特徴とする電動車両。 - 請求項1から19のいずれか一に記載の電源装置を備える蓄電装置であって、
前記電源装置への充放電を制御する電源コントローラを備えており、
前記電源コントローラでもって、外部からの電力により前記電源装置への充電を可能とすると共に、前記電源装置に対し充電を行うよう制御可能としてなることを特徴とする蓄電装置。 - 電極部を備える複数の電池セルと、
各電池セルの電極部同士を接続する導電性のバスバーとを備える電源装置の製造方法であって、
前記バスバーを、その断面視を山形状に折曲した状態で、前記複数の電池セルを積層した電池セル積層体の上面であって、隣接する電池セルの間の、隣接する電極部の各上面に形成された平坦面を有する台座部に、該バスバーの端縁の少なくとも一部に形成された、中央の厚肉部よりも厚さを薄くした薄肉部を配置させる工程と、
前記薄肉部にレーザ光を照射して、前記薄肉部を貫通させて、前記薄肉部に含まれる溶接部を前記台座部と共に溶融させて、これらを溶接する工程とを含むことを特徴とする電源装置の製造方法。
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CN201380055124.3A CN104737328B (zh) | 2012-10-26 | 2013-10-01 | 电源装置以及具备电源装置的电动车辆及蓄电装置、电源装置的制造方法 |
JP2014543131A JP6239523B2 (ja) | 2012-10-26 | 2013-10-01 | 電源装置及び電源装置を備える電動車両並びに蓄電装置、電源装置の製造方法 |
US14/429,355 US9673430B2 (en) | 2012-10-26 | 2013-10-01 | Power source device, electric vehicle comprising power source device, accumulator device |
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JP (1) | JP6239523B2 (ja) |
CN (1) | CN104737328B (ja) |
WO (1) | WO2014064888A1 (ja) |
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JP6239523B2 (ja) | 2017-11-29 |
US9673430B2 (en) | 2017-06-06 |
US20150243947A1 (en) | 2015-08-27 |
CN104737328B (zh) | 2017-03-08 |
JPWO2014064888A1 (ja) | 2016-09-08 |
CN104737328A (zh) | 2015-06-24 |
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