WO2015056598A1 - Battery pack and mobile body provided with same, and production method for battery pack - Google Patents

Battery pack and mobile body provided with same, and production method for battery pack Download PDF

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Publication number
WO2015056598A1
WO2015056598A1 PCT/JP2014/076741 JP2014076741W WO2015056598A1 WO 2015056598 A1 WO2015056598 A1 WO 2015056598A1 JP 2014076741 W JP2014076741 W JP 2014076741W WO 2015056598 A1 WO2015056598 A1 WO 2015056598A1
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WO
WIPO (PCT)
Prior art keywords
assembled battery
unit cell
adjusting body
sandwiching
interval adjusting
Prior art date
Application number
PCT/JP2014/076741
Other languages
French (fr)
Japanese (ja)
Inventor
正伸 鈴木
Original Assignee
サーチウェア株式会社
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Filing date
Publication date
Application filed by サーチウェア株式会社 filed Critical サーチウェア株式会社
Publication of WO2015056598A1 publication Critical patent/WO2015056598A1/en

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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
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • 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
    • 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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0007—Measures or means for preventing or attenuating collisions
    • 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
    • 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
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • 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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
    • 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
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the 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
    • 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
    • H01M50/267—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders having means for adapting to batteries or cells of different types or different sizes
    • 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
    • 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
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/06—Arrangement in connection with cooling of propulsion units with air cooling
    • 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
    • B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
    • B60K2001/005—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric storage means
    • 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
    • B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
    • B60K2001/0411—Arrangement in the front part of the vehicle
    • 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
    • B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
    • B60K2001/0416—Arrangement in the rear part of the vehicle
    • 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
    • B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
    • B60K2001/0438—Arrangement under the floor
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/545—Temperature
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/547—Voltage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/10—Road Vehicles
    • B60Y2200/11—Passenger cars; Automobiles
    • B60Y2200/112—City movers, small sized city motor vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2306/00—Other features of vehicle sub-units
    • B60Y2306/01—Reducing damages in case of crash, e.g. by improving battery protection
    • 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
    • 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 an assembled battery obtained by combining a plurality of single cells, a mobile body equipped with the assembled battery, and a method for manufacturing the assembled battery.
  • the conventional assembled battery shown in Patent Document 1 includes a laminate in which a plurality of single cells (lithium ion batteries) and a plurality of metal heat radiating plates whose surfaces are insulated are alternately laminated. .
  • a pair of end plates and a fastening belt attached to the end plates are provided around the laminated body, and the pair of end plates and the fastening belt are fastened to each other.
  • FIG. 21 schematically shows a state in which a compressive load is generated in the upper part of the central portion in the longitudinal direction.
  • the state where the assembled battery is deformed into a bow shape is exaggerated.
  • the present invention has been made to solve such a problem, and even if the battery pack is deformed into a bow shape and an excessive compressive load is generated, the electrode of the battery cell may be damaged or the inside of the battery cell may be damaged. It aims at providing the assembled battery which does not have a possibility of electrically short-circuiting, and the mobile body carrying the assembled battery.
  • the assembled battery according to the present invention has a flat clamping surface for clamping the unit cell, and the clamping surfaces face each other in parallel with a gap in a direction perpendicular to the clamping surface.
  • a plurality of sandwiching members arranged side by side, a unit cell placed in each of the gaps, and outside each outer periphery of the unit cell excluding both surfaces sandwiched by a sandwiching surface of the sandwiching member, and each of the gaps
  • a battery pack comprising: a space adjusting body disposed separately; and a holding member that holds the single battery and the space adjusting body in a state of being held by a holding surface of the holding member.
  • the compression rigidity of the unit cell and the interval adjusting body when sandwiched by the clamping member is configured such that the interval adjusting unit is higher than the unit cell.
  • An assembled battery according to a second aspect of the present invention is the assembled battery according to the first aspect, wherein the spacing adjuster surrounds an outer periphery of the unit cell except for both surfaces sandwiched by a sandwiching surface of the sandwiching member. Thus, it is formed in a frame shape.
  • An assembled battery according to a third aspect of the present invention is the assembled battery according to the first aspect, wherein the sandwiching of the single battery out of the outer periphery of the single battery excluding both surfaces sandwiched by the sandwiching surface of the sandwiching member.
  • the spacing adjusting bodies are respectively arranged only on the outer sides of the outer peripheral portions located on both sides in the horizontal direction along the surface.
  • An assembled battery according to a fourth aspect of the present invention is the assembled battery according to any one of the first to third aspects, wherein the spacing adjusting body is a pair of adjacent clamping members facing each other. Positioned between the abutting surface of the spacing adjustment body that abuts one clamping surface of the clamping surfaces and the abutting surface of the spacing adjustment body that abuts the other clamping surface of the pair of clamping surfaces It is divided and joined by a dividing surface, and the dividing surface is inclined with respect to the contact surface of the interval adjusting body.
  • An assembled battery according to a fifth aspect of the present invention is the assembled battery according to any one of the first to fourth aspects, wherein the sandwiching member is configured such that heat generated in the single battery generates heat from the single battery.
  • a heat receiving portion that propagates in contact with the heat receiving portion; and a heat radiating portion that is provided at a side edge of the heat receiving portion and releases heat transmitted to the heat receiving portion to the outside of the assembled battery.
  • the heat radiating portion is sandwiched by the clamping member. It is characterized by being positioned outward from the outer periphery of the interval adjusting body.
  • the assembled battery according to the invention described in claim 6 is the assembled battery according to claim 5, wherein a plurality of fins having a heat dissipation surface are formed in the heat dissipation portion, and these fins are formed thin.
  • the heat radiating portion is configured to have an impact strength lower than that of the interval adjusting body.
  • the assembled battery according to the invention described in claim 7 is the assembled battery according to claim 5 or claim 6, wherein the width dimension of the heat radiating portion in the direction perpendicular to the clamping surface of the clamping member is the same in the same direction. It is larger than the width dimension of a heat receiving part, and is smaller than the dimension which combined the width dimension of the said heat receiving part of the same direction, and the width dimension of the said space
  • a moving body in which the assembled battery according to any one of the first to seventh aspects is mounted.
  • the movable body according to the eighth aspect wherein both ends of the assembled battery in a direction perpendicular to the clamping surface of the clamping member are fixed to the main body of the movable body.
  • the fixed position of the fixed member relative to the main body of the movable body or the fixed position of the both ends of the assembled battery with respect to the fixed member is a distance between the two ends.
  • the fixing position of the fixing member relative to the main body of the moving body is adjusted by adjusting the position of the screw member inserted through an insertion hole made of a long hole formed in the fixing member.
  • the fixing member is fixed to the main body of the movable body by being screwed to the main body of the body, and is performed by changing the relative position of the screw member in the insertion hole, and the fixing members at both ends of the assembled battery.
  • the adjustment of the fixed position is performed by changing the relative positions of the both ends of the assembled battery and the elastic member, with both ends of the assembled battery being supported by the fixing member via elastic members, respectively. It is what.
  • the mobile body according to the invention described in claim 10 is the mobile body according to claim 9, wherein the fixed member is configured such that the impact strength in the horizontal direction is lower than the impact strength in the vertical direction. It is characterized by.
  • the movable body according to an eleventh aspect of the present invention is the movable body according to the ninth or tenth aspect, wherein the assembled battery has both end portions in a direction perpendicular to the clamping surface of the clamping member at the fixed member.
  • the fixed positions of the other parts excluding both end portions of the assembled battery are fixed via the elastic members, and fixed to other fixing members provided in the main body of the movable body via the other elastic members.
  • Both fixed positions of the both ends of the battery with respect to the fixing member are positioned so that the center of gravity position of the assembled battery is close to the virtual straight line passing through both the fixed positions, and the fixed positions of the other parts are the virtual positions It is positioned so as to be close to another virtual straight line passing through the center of gravity of the assembled battery while being orthogonal to the straight line.
  • the mobile body according to the invention described in claim 12 is the mobile body according to any one of claims 8 to 11, wherein the mobile body is disposed at a central portion in plan view, and A vehicle having a boarding area for boarding and a pair of left and right wheels disposed on at least one of the front side and the rear side of the boarding area, and in the plan view,
  • the assembled battery is positioned so that the center of gravity position of the assembled battery is close to a virtual straight line connecting both positions in a region excluding the boarding region between the wheel and the ground contact position. It is.
  • the method for manufacturing an assembled battery according to the invention described in claim 13 includes a step of measuring the thickness of the unit cell, and the divided surfaces of the space adjusting body divided into a pair of space adjusting body pieces at an inclined dividing surface.
  • the pair of interval adjusting body pieces are relatively displaced along the direction in which the dividing surface inclines in a state where they are in contact with each other, and the thickness of the interval adjusting body is set to a predetermined thickness corresponding to the thickness of the unit cell.
  • a plurality of unit cell modules comprising a combination of the step of disposing the gap adjusting body on the outer peripheral side of the unit cell, and the unit of adjusting the spacing arranged on the outer peripheral side of the unit cell. Is interposed between a plurality of clamping members each having a flat clamping surface, and the cell and the gap adjusting body are clamped by the clamping member, and the clamping is held by a holding member. It is.
  • the unit cell and the spacing member are clamped by the clamping surface of the clamping member, and the compression stiffness between the unit cell and the spacing unit is higher in the spacing unit than in the unit cell. Therefore, by setting the thickness of each gap adjustment body appropriately, there is no risk of damaging the cell even if it is firmly held by the holding member. , The holding can be held.
  • the interval adjuster is formed in a frame shape surrounding the outer periphery of the unit cell, the unit cell can be protected by the interval adjuster.
  • the outer periphery of the unit cell excluding both surfaces sandwiched by the sandwiching surface of the sandwiching member, it is only on the outer side of the outer peripheral part respectively positioned on both sides in the horizontal direction along the sandwiching surface of the unit cell. Since the interval adjusters are arranged individually, the thickness of each interval adjuster is individually set to the optimum thickness according to the non-uniform thickness even for single cells with non-uniform thickness. By doing so, the unit cell can be clamped in an optimum state. According to the invention described in claim 4, since the interval adjusting body is divided and joined by the inclined dividing surface, the pair of divided interval adjusting body pieces are relatively appropriately arranged along the inclined direction of the dividing surface.
  • the thickness of the interval adjusting body can be made to correspond to the thickness of each unit cell.
  • the heat dissipating part is positioned outward from the outer periphery of the interval adjusting body sandwiched by the holding members, the interval adjusting body and the unit cell can be protected by the heat dissipating part.
  • the heat radiating portion is formed with a plurality of fins having a heat radiating surface, and these fins are formed thin so that the heat radiating portion has a lower impact strength than the spacing adjuster.
  • the heat radiating portion is plastically deformed to absorb the impact, thereby protecting the unit cell.
  • the width dimension of the heat radiating part in the direction perpendicular to the clamping surface of the clamping member is larger than the width dimension of the heat receiving part in the same direction and the same direction as the width dimension of the heat receiving part in the same direction.
  • the width dimension of the heat radiating portion is set as large as possible, the area of the heat radiating portion can be widened, and the cooling performance can be sufficiently secured.
  • the assembled battery since the assembled battery is mounted on the moving body, the assembled battery can be effectively used as a power source for the moving body.
  • the fixing member is configured such that the impact strength in the horizontal direction is lower than the impact strength in the vertical direction. Even when an impact load is applied due to collision, the fixing member can be easily plastically deformed in the horizontal direction, so that damage to the assembled battery can be reduced.
  • the fixed positions of both ends of the assembled battery with respect to the fixing member are positioned so that the center of gravity of the assembled battery is close to the virtual straight line passing through the fixed positions. Since the fixed position of the other part of the battery is positioned so as to be close to another virtual straight line passing through the center of gravity position of the assembled battery, it moves in combination with the support of the assembled battery via the elastic member. It can suppress suitably that the vibration at the time of a body movement propagates to an assembled battery. According to the twelfth aspect of the present invention, in plan view, the center of gravity position of the assembled battery is close to a virtual straight line connecting both positions in a region excluding the riding region between the center of gravity position of the vehicle and the ground contact position of the wheel.
  • the assembled battery Since the assembled battery is positioned so that the assembled battery is supported through the elastic member, the assembled battery, which is a heavy object, functions as a dynamic damper (vibration control mechanism) to drive the road surface The vibration of the vehicle due to the vibration can be suitably suppressed.
  • the compression rigidity between the unit cell and the interval adjustment body is configured so that the interval adjustment unit is higher than the unit cell, so that there is no possibility of damaging the unit cell even when firmly held by the holding member.
  • Each single cell can be clamped with an optimal compressive force, and the clamping can be maintained.
  • FIG. 1 is an overall view of a vehicle showing a state in which a vehicle equipped with an assembled battery according to an embodiment of the present invention is viewed from diagonally forward and upward.
  • FIG. 2 is a plan view schematically showing a schematic configuration in a state where the vehicle of FIG. 1 is viewed from above. It is a figure which shows the structure which fixes an assembled battery to the vehicle body frame of the vehicle. It is a figure which shows the state which looked at the assembled battery fixed to the vehicle body frame of the vehicle from diagonally upward of the one end part side. It is a figure which shows the state which looked at the assembled battery fixed to the vehicle body frame of the vehicle from the diagonally lower side of the one edge part side.
  • FIG. 1 and FIG. 2 What is shown by the code
  • the direction indicated by the arrow F indicates the front of the vehicle 1, and a pair of left and right front wheels 3, 3 are suspended on the vehicle body frame 7 via the front suspension device 5 at the front of the vehicle 1.
  • a pair of left and right rear wheels 9, 9 are suspended on the body frame 7 via a rear suspension device 11 so as to be freely slidable.
  • the front wheels 3 and 3 and the rear wheels 9 and 9 constitute the “wheel” of the present invention.
  • the vehicle body frame 7 includes a center frame 7a that extends in the left-right direction of the vehicle 1 at the center in the front-rear direction, and the center frame 7a is formed in a hexagonal shape in plan view.
  • the body frame 7 and the center frame 7a constitute the “main body of the moving body” of the present invention.
  • the vehicle body frame 7 includes a hollow tube having a square cross section including the central frame 7a.
  • On the central frame 7a there is a boarding area 13 for passengers to board. In this boarding area 13, as shown in FIG. 1, a seat 15 for passengers to sit and a floor 17 in front of the seats 15 are provided. Is provided.
  • the sheet 15 and the floor 17 are covered with a shield 19, and a transparent body 21 is assembled to the front of the shield 19.
  • the shield 19 and the transparent body 21 form a substantially spherical passenger compartment.
  • a cylindrical shock absorbing member 22 having a rectangular cross section is fitted and fixed by bolts or welding. When the vehicle 1 collides with an obstacle, the bolt or the welded portion is broken, and the shock absorbing member 22 is moved relative to the vehicle body frame 7 to absorb the shock.
  • the assembled batteries 23 are arranged between the left and right front wheels 3, 3 and the riding area 13 in a plan view, and the assembled batteries 23 are also arranged between the left and right rear wheels 9, 9 and the riding area 13.
  • a battery 23 is arranged, and a total of four assembled batteries 23 are mounted.
  • the assembled battery 23 supplies electric power to an electric device mounted on the vehicle 1, and the electric device includes an electric motor, a headlight, and the like for rotationally driving the front wheels 3, 3 or the rear wheels 9, 9. And a control device for controlling the electric motor.
  • the vehicle 1 also includes a handle for steering the front wheels 3 and 3. For convenience of drawing, illustration of electrical devices, handles, etc. is omitted.
  • Each of the assembled batteries 23 is opposed to a portion corresponding to the two hexagonal front sides and a portion corresponding to the two rear sides of the central frame 7a with a certain gap in plan view of the vehicle 1. Arranged and fixed to the central frame 7a. Specifically, each of the assembled batteries 23 is between the other end portions of a pair of support brackets 25, 25 each having one end portion fixed to a portion corresponding to each of the two sides of the hexagonal front side and rear side of the central frame 7a. Each is erected via an elastic member 27. Each support bracket 25 has a base 25a formed in a U shape in a side view shown in FIG. 3C and a substantially isosceles triangle extending from a side end surface of the base 25a in the side view. The battery pack 23 is fixed to the portion corresponding to the apex of the substantially isosceles triangle shape of the main body portion 25b via the elastic member 27.
  • the support brackets 25 and 25 constitute a “fixing member” of the present invention.
  • the base 25a of the support bracket 25 is screwed to the central frame 7a by a screw member 29 with the central frame 7a sandwiched between the upper and lower sides.
  • the insertion hole formed in the base portion 25a of the support bracket 25 through which the screw member 29 is inserted is formed as an oblong slot that is long in the direction along the hexagonal side of the center frame 7a (see FIG. 4 and FIG. 4). (See FIG. 5).
  • FIG. By providing this long hole, the support bracket 25 can be displaced in a direction along the hexagonal side of the central frame 7a, and the fixing position can be arbitrarily adjusted.
  • the support bracket has sufficient mechanical strength to support the assembled battery 23 against vertical vibrations that the vehicle 1 receives while traveling, and is also attached to the support bracket 25 or the support bracket 25 while the vehicle 1 is traveling.
  • the pair of support brackets 25 and 25 have a vertical impact strength that is vertical so that the assembled battery 23 moves in the horizontal direction and absorbs the transmitted shock. It is comprised so that it may become lower than the impact strength of a direction.
  • each assembled battery 23 is substantially isosceles with one end screwed by a screw member 35 to the central portion of the center frame 7a corresponding to the two sides of the hexagonal front and rear sides. It is supported by the other end of a triangular support plate 37 (see FIG. 3A).
  • the support plate 37 constitutes “another fixing member” of the present invention.
  • each assembled battery 23 is supported via a cylindrical elastic member 39 at a portion corresponding to the apex of the approximately isosceles triangle shape of the support plate 37, and the bottom of the approximately isosceles triangle shape is supported. Sites corresponding to both end portions are screwed to the bottom surface of the central frame 7 a by screw members 35.
  • the elastic member 39 is configured by a member made of a rubber member or other resin material.
  • the elastic member 39 constitutes “another elastic member” of the present invention. Details of the fixing structure by the elastic member 39 will be described later.
  • the structures of the left and right wind guide covers 31L and 31R disposed on the front side of the vehicle 1 are configured to be symmetrical with respect to the center in the width direction of the vehicle 1, and the left and right wind guide covers disposed on the rear side of the vehicle 1.
  • the structures of 33L and 33R are configured to be symmetric with respect to the center of the vehicle 1 in the width direction.
  • the air guide covers 31L and 33L will be described in detail, and the description of the air guide covers 31R and 33R will be omitted.
  • the air guide cover 31 ⁇ / b> L has an upper surface portion 41 whose cross-sectional shape is bent in a U-shape and a curved cross-sectional shape that is continuously convex at two locations.
  • Portion 47, side surface portion 49T that covers both side surfaces surrounded by upper surface portion 41, lower surface portion 43, rear surface portion 45, and front surface portion 47, side surface portion 49N (see FIG. 2) on the opposite side, and wind guide cover 31L.
  • partition plates 51 and 53 for guiding the air introduced into the inside to be discharged from two places.
  • the side surface portion 49T of the air guide cover 31L is provided with three notches, and from these notches, a part of the side surface portion of the assembled battery 23 and a part of each of the partition plates 51 and 53 are provided. Is exposed to the outside.
  • the side surface portion 49N of the wind guide cover 31L is provided with a notch portion and an opening 57 (see FIG. 6) for exposing a part of the side surface portion of the assembled battery 23 to the outside.
  • An intake duct 61 for introducing outside air introduced from the front end opening 59F of the front shock absorbing member 22 and passing through the body frame 7 into the air guide cover 31L is inserted.
  • the upper surface portion 41, the lower surface portion 43, the rear surface portion 45, and the front surface portion 47 of the air guide cover 31 ⁇ / b> L are side surface portions by screw members 65 inserted through oblong holes that are long in the horizontal direction and formed at the ends thereof. It is fastened with 49T.
  • the fixing position of the side surface portion 49T with respect to the upper surface portion 41 and the like is arbitrarily adjusted to cope with manufacturing variations in the width dimension of the assembled battery 23. Can do.
  • this long hole may be formed in both the side part 49T side and the side part 49N side, you may make it form only in any one side.
  • a substantially cylindrical fan 67 that rotates around a horizontal axis is disposed between the partition plates 51 and 53 of the wind guide cover 31 ⁇ / b> L and in the vicinity of the partition plate 53.
  • the fan 67 is rotationally driven by an electric motor 69 fixed to the outer surface of the side surface portion 49N of the cover 31L.
  • the end of the rotating shaft of the fan 67 opposite to the electric motor 69 is supported by a bearing member (not shown) fixed to the side surface portion 49T so as to be slidable in the axial direction. It is configured to be able to absorb manufacturing variations in distance to the portion 49T.
  • the fan 67 shown in FIG. 6 is a cross flow fan, but may be a centrifugal fan instead.
  • a temperature sensor (not shown) arranged in the assembled battery 23 measures the temperature of the assembled battery 23, and the electric motor 69 is driven to rotate based on the measured value, and the fan 67 rotates to cool the assembled battery 23. Is configured to do.
  • the fan 67 rotates, the outside air introduced from the opening 59F of the shock absorbing member 22 passes through the body frame 7 and then is introduced into the wind guide cover 31L through the intake duct 61. Air that is heated by cooling the assembled battery 23 by the air introduced into the air guide cover 31L is externally provided from the opening 51a formed by the partition plate 51 and the opening 53a formed by the partition plate 53 and the upper surface portion 41.
  • the opening 51a and the opening 53a may be configured to be connected to an exhaust duct (not shown) disposed on the side portion of the vehicle 1.
  • an exhaust duct (not shown) disposed on the side portion of the vehicle 1.
  • the fan 67 is rotationally driven by the electric motor 69 fixed to the outer side surface of the side surface portion 49N of the air guide cover 33L, and the outside air is provided on the side surface portion 49N via the intake duct 68 disposed on the side portion of the vehicle 1. It is introduced from the opening 57.
  • the air warmed by cooling the battery pack 23 by the air introduced into the air guide cover 33L is guided by the partition plates 51 and 53, and the openings 51a and the partition plate 53 formed by the partition plate 51, and the upper surface portion.
  • 41 is introduced into the rear of the body frame 7 through the exhaust duct 70 from the opening 53 a formed by 41. Thereafter, the air is discharged from the opening 59R at the rear end of the shock absorbing member 22 fitted and fixed to the rear portion of the body frame 7.
  • the connecting portion of either one of the ducts to the wind guide cover 33L has a flexible structure (for example, a bellows structure). By doing so, it is possible to absorb variations in manufacturing of the width dimension of the assembled battery 23 and displacement of the assembled battery 23 due to road surface vibrations when the vehicle 1 is traveling.
  • the gravity center positions of the air guide covers 31L, 31R, 33L, and 33R including the assembled battery 23 housed inside are respectively G11, G12, G13, and G14, and the gravity center position of the vehicle 1 Is set to G2, the ground contact positions of the front wheels 3, 3 and the rear wheels 9, 9 are respectively P1, P2, Q1, Q2, and the virtual straight lines connecting the gravity center position G2 and the ground contact positions P1, P2, Q1, Q2 ( Line segments) are L1, L2, M1, and M2, respectively, so that the center-of-gravity positions G11, G12, G13, and G14 are close to each other on the virtual straight lines L1, L2, M1, and M2 excluding the boarding area 13.
  • the air guide covers 31L, 31R, 33L, 33R are positioned. Note that the weight of each of the air guide covers 31L, 31R, 33L, and 33R including the assembled battery 23 occupies most of the weight, so that the center-of-gravity positions G11, G12, G13, and G14 correspond to the assembled battery 23. It can be said that it is equivalent to the position of the center of gravity.
  • the assembled battery 23 is disposed at a position separated from the boarding area 13, even if gas is generated from the assembled battery 23 when the assembled battery 23 is abnormal, the battery 23 is exposed to the outside air until the gas reaches the boarding area 13. Stirs and disappears.
  • the elastic member is arranged so that the center of gravity G1 is close to the virtual straight line N1 passing through the centers of the pair of elastic members 27, 27 to which both ends of each of the assembled batteries 23 are fixed.
  • the wind guide covers 31L, 31R, 33L, 33R and the assembled batteries 23 are positioned so that the center of gravity G1 is close to a virtual straight line N2 (vertical straight line) passing through the center of 39.
  • the virtual straight line N2 constitutes “another virtual straight line” in the present invention.
  • the direction of the imaginary straight line N2 is the vertical direction. However, if the direction is close to the gravity center position G1 and orthogonal to the imaginary straight line N1, the horizontal direction or the horizontal direction or the vertical direction It may be an inclined direction.
  • the vertical direction is the Z direction
  • the upward direction is the direction Z1
  • the downward direction is the direction Z2.
  • a direction perpendicular to the Z direction and perpendicular to a sandwiching surface 71a of a cooling plate 71 described later is defined as an X direction, and is defined as a direction X1 and a direction X2 according to the respective directions of the X direction.
  • a direction perpendicular to the Z direction and the X direction is defined as a Y direction
  • a direction Y1 and a direction Y2 are defined according to the respective directions of the Y direction.
  • the assembled battery 23 includes a plurality of cooling plates 71 made of aluminum alloy arranged in parallel in a state where the sandwiching surfaces 71a are parallel to each other with a gap in the X direction (constituting the “clamping member” of the present invention).
  • a single battery module disposed in each of the gaps between the cooling plates 71, and held between the cooling plates 71, and holding the holding in a state where the single battery module is held between the holding surfaces 71a of the cooling plate 71
  • the unit cell module includes a unit cell 77 made of a substantially rectangular lithium ion battery and an outer periphery of the unit cell 77 (excluding the surface sandwiched by the sandwiching surface 71a of the cooling plate 71).
  • the compression rigidity of the unit cell 77 and the interval adjusting body 79 when sandwiched between the cooling plates 71 is configured so that the interval adjusting unit 79 is higher than the unit cell 77.
  • the upper surface of the unit cell 77 has a positive electrode terminal 77 a and a negative electrode terminal 77 b, an exhaust port 77 c through which a valve is opened and discharged when the gas generated when the unit cell 77 is abnormal exceeds a predetermined pressure,
  • An injection hole 77d for injecting an electrolytic solution is provided.
  • the injection hole 77d is sealed after the electrolyte is injected.
  • Conductive bus bars 80 bent in an S shape are laser welded to the positive terminal 77 a and the negative terminal 77 b of each unit cell 77.
  • the bus bar 80 laser-welded to the positive terminal 77 a of one unit cell 77 and the bus bar 80 laser-welded to the negative terminal 77 b of the other unit cell 77 of the pair of adjacent unit cells 77, 77 in the assembled battery 23.
  • These end portions are overlapped with each other, and are connected and electrically connected by a bolt inserted through a bolt hole formed in the end portions.
  • a nut is welded to the back surface of the upper end portion of the bus bar 80 located on the lower side when connected.
  • the interval adjusting body 79 includes a pair of first interval adjusting body pieces 79a and second interval adjusting body pieces 79b each having a substantially rectangular frame shape, and the size of each of the interval adjusting body pieces 79a and 79b in the Z direction is the cooling plate 71. Are substantially the same as the dimensions in the Z direction.
  • the first interval adjusting body piece 79a and the second interval adjusting body piece 79b constitute the “interval adjusting body piece” of the present invention.
  • An abutment surface of the first interval adjusting body piece 79a that abuts one clamping surface 71a of a pair of opposing clamping surfaces 71a, 71a between adjacent cooling plates 71, and the other of the pair of clamping surfaces 71a, 71a.
  • the first spacing adjustment body piece 79a and the second spacing adjustment body piece 79b of the spacing adjustment body 79 at a dividing surface 81 positioned between the second spacing adjustment body piece 79b and the abutting surface of the second spacing adjustment body piece 79b. are divided and joined.
  • the dividing surface 81 is a surface parallel to the Z direction, and is inclined with respect to a contact surface of the interval adjusting body 79 with the holding surface 71a.
  • Each cooling plate 71 Is sandwiched between a flat clamping surface 71a (which constitutes the “heat receiving part” of the present invention) that functions as a heat receiving part through which heat generated by the single battery 77 abuts on the single battery 77 and propagates.
  • a heat dissipating part 71b extending to both side edges in the Y direction of the surface 71a and releasing heat transmitted to the holding surface 71a to the outside of the assembled battery 23;
  • the clamping surface 71a is formed to have a dimension in the Y direction slightly larger than the distance adjusting body 79, and a plurality of vent holes 82b through which air can pass are formed in the Z direction inside the clamping surface 71a.
  • Each of the vent holes 82b has a substantially rectangular cross section.
  • the heat dissipating part 71b is extended outward from the outer periphery of both ends in the Y direction of the interval adjusting body 79, and a plurality of fins 83 are formed that have a heat dissipating surface parallel to the Y direction and the Z direction and long in the Z direction. ing.
  • the entire cooling plate 71 is uniformly cooled as air passes through the inside of the air holes 82b formed in the holding surface 71a and between the plurality of fins 83.
  • the flow of air in the air guide cover 33L described above will be described in detail including the vent holes 82b and fins 83 of the assembled battery 23.
  • the outside air introduced into the air guide cover 33 ⁇ / b> L from the openings 55 and 57 is vented to the cooling plates 71 by air blown by the rotation of the fan 67 and guidance by the partition plates 51 and 53 arranged so as to surround the fan 67. 82b... Are sent toward the upper part and then pass downward through the air holes 82b. Thereafter, the air branched and guided to the rear surface 45 side and the front surface 47 side of the air guide cover 33L along the curvature of the lower surface portion 43 of the air guide cover 33L, the fins 83 on both sides of each cooling plate 71. After being sent toward the lower part, it passes between the fins 83. The air that has passed between the fins 83 is guided by the partition plates 51, 53, etc., and is exhausted out of the air guide cover 33L through the openings 51a, 53a.
  • the cooling plate 71 is made of a material including a ventilation hole 82b in the holding surface 71a and a fin 83 in the heat radiating portion 71b except for a through hole into which a bolt 87 of the holding member 75 described later is inserted and a rectangular cutout portion 82a. In this manufacturing stage, it is manufactured by extrusion molding in the Z direction. Since the fins 83 are formed thin, the heat radiation portion 71b has a lower impact strength than the clamping surface 71a.
  • the X-direction width dimension T1 of the heat radiating portion 71b is larger than the X-direction width dimension T2 of the sandwiching surface 71a, and the X-direction width dimension (T2 + T3) is the sum of the width dimension T2 and the X-direction width dimension T3 of the spacing adjuster 79. ) Is set smaller.
  • the X-direction width dimension T1 of the heat radiating portion 71b is set as large as possible, and the heat is effectively radiated by the fins 83 of the heat radiating portion 71b.
  • the holding member 75 includes a pair of substantially rectangular end plates 85 and 85 which are in contact with the outer surfaces of the cooling plates 71 and 71 located at the outermost ends of the plurality of cooling plates 71.
  • Long end circular bolts 87 inserted into a plurality of through holes formed in the end plates 85, 85, and nuts 89 screwed into these bolts 87.
  • the pair of end plates 85, 85, bolts 87, and nuts 89 constitute the “holding member” of the present invention.
  • the unit cells 77 and the spacing adjusters 79 interposed between the plurality of cooling plates 71 are respectively held between the cooling plates 71.
  • the other end of a bolt 85a having a male screw engraved at one end is fixed to the central portion of the pair of end plates 85, 85, and these bolts 85a extend in directions along the directions X1 and X2. Each extends.
  • a plurality of portions are recessed in a hexagonal shape on the outer surface of each end plate 85, 85 to form recesses 85b, thereby saving material and reducing the weight.
  • Four of the plurality of through holes drilled in the end plate 85 are drilled in portions corresponding to the substantially rectangular four corners of the end plate 85, and the remaining two are formed in a substantially rectangular shape of the end plate 85.
  • the protrusions 85c are formed at portions corresponding to the middle of the upper side and the lower side. Corresponding to the four through holes drilled at the four corners of the end plate 85 in a state where the holding members 75 hold the single cells 77 and the gap adjusting bodies 79 by the cooling plates 71.
  • the through holes are formed in the respective portions of the cooling plates 71 and the interval adjusting bodies 79.
  • the four bolts 87 inserted through the four through holes drilled in the four corners of the end plate 85 are connected to the cooling plates 71. It is also inserted into a through hole with the interval adjusting body 79.
  • the two bolts 87 inserted through the two through holes formed in the projecting portion 85c of the end plate 85 are close to the upper and lower sides of the cooling plates 71 and the interval adjusting bodies 79, respectively. Are arranged. These two bolts 87 are inserted in the opposite direction to the four bolts 87 inserted through the through-holes at the four corners of the end plate 85, but may all be the same insertion direction. Further, the six bolts 87 use a bolt in which a male screw is engraved at one end and a hexagonal head is integrally formed at the other end. Instead, a male screw is engraved at both ends. Bolts may be used. In FIG. 8 and FIG. 9, the bolts 87 are appropriately cut for illustration purposes.
  • the through holes drilled in the respective cooling plates 71 are formed in a circular shape whose diameter is substantially equal to the outer diameter of the bolt 87, and the through holes drilled in the respective spacing adjusting bodies 79 are Bolts 87 are formed in oblong elongated holes 90a that are long in the Y direction so that they can move relative to each other in the Y direction.
  • the long hole 90a of the interval adjusting body 79 is a through hole of the interval adjusting body piece 79a and the second interval adjusting body piece 79b constituting the interval adjusting body 79.
  • an injection hole 90b for injecting an adhesive is formed in the Z direction intermediate portion on the direction Y2 side in the first interval adjusting body piece 79a and the Z direction intermediate portion on the direction Y1 side in the second interval adjusting body piece 79b. Each is drilled in the X direction.
  • a through hole 90c is formed as an opening for taking out an electric wire for measuring the voltage of the unit cell 77 (see FIG. 9).
  • a rectangular cutout 91a that is cut out in a concave shape is formed at each intermediate portion in the Y direction at the top of each of the first gap adjustment piece 79a and the second gap adjustment piece 79b.
  • the rectangular cutout portion 91a is formed so as to be positioned at a position substantially coinciding with the respective joint surfaces when the gap adjusting body pieces 79a and 79b are joined.
  • arc-shaped notches 91b are formed at intermediate portions in the Y direction of the inner peripheral surfaces of the upper portions (direction Z1 side) and the lower portions (direction Z2 side) of the gap adjusting body pieces 79a and 79b, respectively.
  • the arcuate notch 91b is formed so as to be positioned at a substantially coincident position when the two spacing adjusting body pieces 79a and 79b are joined.
  • the rectangular cutout portion 91a functions as an exhaust port for discharging the gas discharged from the exhaust port 77c of the unit cell 77 when the unit cell 77 is abnormal.
  • the arc-shaped notch 91 b does not interfere with the inner surface of the interval adjuster 79 without interfering with the interval adjuster 79.
  • the unit cell 77 is turned into a shape that can be removed by rotating and changing its posture.
  • the arcuate notch 91b is used when only a single cell 77 is removed when some of the single cells 77 in the battery pack 23 become defective.
  • a rectangular cutout 91c that is cut out in a concave shape is formed on the direction Y1 side above the first interval adjusting body piece 79a and on the direction Y2 side above the second interval adjusting body piece 79b.
  • a pair of bus bars 80, 80 electrically connected to a pair of adjacent single cells 77, 77 across the cooling plate 71 in the assembled battery 23 are formed of the first interval adjusting piece 79a and the second interval adjusting piece 79b.
  • the rectangular cutout portions 91c and the rectangular cutout portions 82a of the cooling plate 71 between the interval adjusting body pieces 79a and 79b are accommodated in an accommodating portion. It is configured not to protrude significantly from the edge.
  • the first interval adjusting body piece 79a and the second interval adjusting body piece 79b are formed in the same shape except for the through-hole 90c, and are manufactured by extrusion molding in the X direction at the material manufacturing stage.
  • step S5 aging of the plurality of single cells 77 prepared in step S1 is performed.
  • the aging in this case is to perform charging (including full charge) of a preset capacity to a single cell under a preset environmental temperature.
  • step S6 the performance of each of the single cells 77 that has been aged in step S5 is inspected.
  • the inspection is to perform an inspection such as whether or not the discharge characteristics, the voltage and the charging capacity at the time of charging are appropriate, and an appearance inspection at a preset environmental temperature. As a result of the inspection, the unit cell 77 determined to be unsuitable is discarded.
  • each single cell 77... Inspected in step S6 is clamped by the clamping surface 71a of the cooling plate 71 in a preset charging state (including full charge) and at a preset environmental temperature.
  • the surface of the unit cell 77 is clamped by the clamping unit of the measuring apparatus 101 with a preset compressive load.
  • the thickness at that time is measured by the measuring device 101 and stored in the storage device 103 (see step S7, flow F1). Measurement of the thickness of the case is t 0 shown in (a) of FIG. 12.
  • the thickness of the unit cell 77 may be measured at two or more sites (for example, both ends), and the average value or the minimum value of the measured values may be the thickness of the unit cell 77.
  • the unit cell 77 determined to be inappropriate is discarded. Note that the order in which the inspection in step S6 and the measurement in step S7 are performed may be interchanged.
  • the inclined surfaces of the pair of first interval adjusting body pieces 79a and second interval adjusting body pieces 79b arbitrarily selected from the plurality of interval adjusting bodies 79 prepared in step S2 are brought into contact with each other.
  • the distance adjusting body pieces 79a and 79b are relatively moved by operating the servo motor of the measuring device 104 along the direction in which the dividing surface 81 is inclined. While being displaced, the measuring device 104 measures the total thickness of both the distance adjusting body pieces 79a and 79b.
  • the measured value at that time is between an upper limit threshold value and a lower limit threshold value for the interval adjuster set based on the thickness measured value of one single cell 77 arbitrarily selected from the previously measured unit cells 77.
  • the relative positions of the two spacing adjusting body pieces 79a and 79b are specified so as to enter (see step S8, flow F2).
  • 12 (b) to 12 (d) the total thickness of both spacing adjusting body pieces 79a and 79b is the largest value in the case of the relative positions of both spacing adjusting body pieces 79a and 79b shown in FIG. 12 (b).
  • T 1 + s In the case shown in (d), the total thickness is the smallest value (t 1 -s).
  • the intermediate value (t 1 ) is obtained.
  • the upper limit threshold and the lower limit threshold for the interval adjuster can reduce deterioration of the unit cell 77 by compressing and holding the unit cell 77 arbitrarily selected so as to fall within the range of those values. It is a value that can be obtained by experiments.
  • the upper limit threshold is smaller than the thickness value corresponding to the thickness of the unit cell 77 when fully charged (the value calculated based on the thickness measured in step S7).
  • the lower limit threshold is set to a value such that the compression force when the unit cell 77 is compressed until the thickness reaches that value does not exceed the compression strength of the unit cell 77.
  • the unit cell 77 arbitrarily selected and the both-interval adjusting body pieces 79a and 79b whose relative positions are specified are stored in association with each other as members constituting one unit cell module.
  • an adhesive is applied to the injection holes 90b of the both-space adjusting body pieces 79a, 79b in a state where the both-space adjusting body pieces 79a, 79b are held at the relative positions of the both-space adjusting body pieces 79a, 79b specified in step S8. It inject
  • one arbitrarily selected cooling plate 71 among the plurality of cooling plates 71 prepared in step S3 is held horizontally, and on the clamping surface 71a of the cooling plate 71, in step S9, the both-space adjusting body piece 79a.
  • step S7 a cell 77 having a thickness measured in step S7 on the sandwiching surface 71a facing the inner peripheral side of the space adjusting body 79.
  • the cell 77 associated with the interval adjusting body pieces 79a, 79b as a member constituting one cell module is placed (see step S10, flow F4).
  • Positioning of the gap adjusting body 79 and the unit cell 77 on the clamping surface 71a of the cooling plate 71 is performed by a jig.
  • step S10 the gap between the inner peripheral surface of the gap adjusting body 79 and the outer peripheral face of the single battery 77 is maintained while the state of step S10 in which the gap adjusting body 79 and the single battery 77 are placed on the cooling plate 71 is held by a jig.
  • the buffer 107 is filled with the filling device 109, and the cooling plate 71, the interval adjusting body 79, and the unit cell 77 are integrated to produce a combined body (step S11, see FIG. 13).
  • the buffering agent filled at this time include a buffering agent such as an epoxy resin.
  • the buffer remains flexible to some extent after it is cured.
  • Step S1 After the steps from Step 5 to Step 11 are completed for all the unit cells 77 prepared in Step S1, all the joined bodies such as the cooling plate 71 integrated in Step 11 are replaced with the interval adjusting bodies. 79 and unit cells 77 and cooling plates 71 are stacked alternately.
  • the unit cells 77 are stacked in order to insulate the unit cells 77 from being electrically connected to each other via the aluminum alloy cooling plate 71.
  • An insulating sheet having good thermal conductivity is interposed between the contact surfaces of one cooling plate 71 and the other unit cell 77 among the joined bodies.
  • insulating grease may be applied between the contact surfaces in a uniform thickness.
  • the surface layer of the unit cell 77 is made of an aluminum alloy, it may be insulated with an anodized film instead of the insulating sheet.
  • the surface layer of the unit cell 77 is an insulating resin, the insulating sheet and the insulating grease can be omitted.
  • Step S12 the laminated assembly is fastened and clamped by the holding member 75 (a pair of end plates 85, 85, bolts 87, and nuts 89) prepared in Step 4 (Step S12).
  • the tightening torque of the nut 89 with respect to the bolt 87 is a predetermined torque that can give a compressive force that can reduce the deterioration of the unit cell 77, and is a torque that has been obtained in advance by experiments.
  • one end portions of the pair of bus bars 80, 80 are superposed and connected in advance by bolts, and the other end portions of the integrated bus bar pair are connected to each other by a laser welding device. Laser welding is performed on the terminals 77b.
  • Laser welding is performed on the terminals 77b.
  • the completed assembled battery 23 is subjected to a confirmation inspection as to whether or not the performance as the assembled battery is appropriate, and as a result of the inspection, the assembled battery 23 determined to be inappropriate is identified and re-adjusted or discarded.
  • the cell 77 is moved with respect to the space adjuster 79 in the Z direction. Then, it is further rotated about the axis in the X direction to be detached from the interval adjusting body 79. At this time, even when the bus bar 80 is welded by the arc-shaped notch 91 b of the interval adjusting body 79, the single cell 77 can be removed without interfering with the inner peripheral surface of the interval adjusting body 79. As a result, it is possible to safely separate the unit cell 77 and the interval adjuster 79 without destroying the unit cell 77 and releasing the internal electrolyte. The separated interval adjusting body 79 and the single battery 77 are safely recycled by an appropriate method.
  • a new unit cell module including a new unit cell 77 and a distance adjusting body 79 whose thickness is adjusted in accordance with the thickness of the unit cell 77 is prepared.
  • the end portions of the bus bars 80 are laser-welded to the positive terminal 77 a and the negative terminal 77 b of each unit cell 77 at positions positioned with reference to the end surface of the unit cell 77.
  • a new single battery module is positioned at the position of the assembled battery 23 to which the defective battery module is attached, and the assembled battery 23 is assembled with an appropriate compressive force by passing through a bolt as a holding member. The ends of the two are connected with bolts to complete the replacement of the unit cell 77.
  • the upper surface portion 41, the lower surface portion 43, and the rear surface of the wind guide cover 31L so as to cover the surface portions of the assembled battery 23 excluding both end portions including the end plates 85 and 85 of the assembled battery 23 on the side surface portions 49T and 49N.
  • the surface portion 45 and the front surface portion 47 are fixed with a screw member 65.
  • the elastic member 27 is inserted into each bolt 85 a fixed to the end plates 85 at both ends of the assembled battery 23.
  • the elastic member 27 is configured by a structure in which an elastic material made of a rubber member or other resin material is bound to a gap between a metallic outer cylinder and an inner cylinder arranged coaxially.
  • the concave portion 39b of the elastic member 39 assembled on the bottom surface side of the assembled battery 23 is a truncated cone-shaped convex portion 37a provided at the tip of the support plate 37 fixed to the central frame 7a (see FIG. 14).
  • the elastic members 27 whose positions are adjusted by assembling the assembled battery 23 and the like are fitted into the recesses 113 of the support brackets 25 and 25 from above.
  • a pressing member (not shown) is pressed against each elastic member 27 fitted in the recess 113 of each support bracket 25, 25 from above, and is fixed to the recess 113 with a screw member.
  • a fixing method is provided by providing an engaging portion (not shown) and an engaged portion (not shown) on the vehicle side and the assembled battery side, respectively. May be.
  • the long hole for insertion is used to cope with manufacturing variations in the width dimension of the assembled battery 23.
  • either one of the structures is stopped and the bolt male thread portion having a normal length or A circular screw member insertion hole may be used.
  • a connection terminal (not shown) on the assembled battery 23 side and a connection terminal (not shown) on the vehicle 1 side are provided, and the connection terminals are connected to each other in a state where the assembled battery 23 is assembled to the vehicle 1. Both connection terminals are arranged so as to be electrically connected, and are configured to complete the electrical connection at the same time that the assembled battery 23 is assembled to the vehicle 1.
  • each assembled battery 23 is mounted on the vehicle 1 so that each assembled battery 23 can be effectively used as a power source of the vehicle 1.
  • the unit cell 77 and the interval adjuster 79 are sandwiched by the clamping surface 71a of the cooling plate 71, and the compression rigidity between the unit cell 77 and the interval adjuster 79 is as follows. Since the interval adjusting body 79 is configured to be higher than the unit cell 77, the bolts 87 and nuts 89 can be firmly fastened by appropriately setting the thickness of each interval adjusting body 79. There is no risk of damaging the unit cells 77, and each unit cell 77 can be held with an optimum compressive force.
  • the heat conduction between the unit cell 77 and the cooling plate 71 can be improved, and each unit cell 77 can be held firmly, and a bending load is applied to the assembled battery 23 by vibration.
  • the assembled battery 23 becomes difficult to bend.
  • the interval adjusting body 79 that is one of the constituent members of the single cell module receives most of the compressive load.
  • the other unit cell 77 is avoided from receiving an excessive compressive load.
  • interval adjusting body 79 is divided and joined by the inclined dividing surface 81, the pair of divided interval adjusting body pieces 79a and 79b are relatively appropriately displaced along the inclined direction of the dividing surface 81. Thereby, the thickness of the space
  • interval adjustment body 79 can be made into the thickness corresponding to the thickness for every single cell 77.
  • the interval adjusting body 79 is formed in a frame shape surrounding the outer periphery of the unit cell 77, the unit cell 77 can be protected by the interval adjusting body 79. Further, the heat dissipating part 71b of the cooling plate 71 that releases heat transmitted from the unit cell 77 to the clamping surface 71a of the cooling plate 71 to the outside of the assembled battery 23 is outward from the outer periphery of the interval adjusting body 79 that is sandwiched by the cooling plate 71. Therefore, the space adjuster 79 and the unit cell 77 can be protected by the heat radiating portion 71b.
  • each fin 83 ... of the heat radiating portion 71b is formed thin, the heat radiating portion 71b has a lower impact strength than the sandwiching surface 71a, so when an impact force is applied to the assembled battery 23 from the outside, The unit cells 77 are protected by plastic deformation of the fins 83 of the heat dissipating part 71b to absorb the impact.
  • the X-direction width dimension T1 of the heat radiating portion 71b in the direction perpendicular to the clamping surface 71a of the cooling plate 71 is made larger than the X-direction width dimension T2 of the clamping surface 71a in the same direction, as many fins 83 are formed as possible.
  • the area of the heat radiating portion 71b can be increased, and sufficient cooling performance can be ensured.
  • the fixing position of the support bracket 25 with respect to the central frame 7a of the vehicle 1 is configured to be arbitrarily adjustable, the manufacturing variation in the width dimension of the assembled battery 23 laid between the pair of support brackets 25, 25. It can correspond to.
  • the relative position in the axial direction of the elastic member 27 with respect to the bolt 85 a provided on the end plate 85 is configured to be arbitrarily adjustable, the elastic member 27 is installed between the pair of support brackets 25, 25. It is possible to cope with manufacturing variations in the width dimension of the assembled battery 23.
  • the pair of support brackets 25 and 25 are configured such that the impact strength in the horizontal direction is lower than the impact strength in the vertical direction, the battery pack 23 or the support bracket 25 is obstructed while the vehicle 1 is traveling. Even if an impact load is applied due to collision, the pair of support brackets 25 and 25 are easily plastically deformed in the horizontal direction, so that damage to the assembled battery 23 can be reduced.
  • the fixed positions of both ends of the assembled battery 23 with respect to the pair of support brackets 25, 25 are close to the gravity center position G11 of the air guide cover 31L including the assembled battery 23 on the virtual straight line N1 passing through the fixed positions.
  • the fixed position of the bottom surface portion of the assembled battery 23 is positioned so as to be close to the virtual straight line N2 passing through the gravity center position G11, so that the assembled battery 23 is supported via the elastic members 27 and 37. In combination with this, it is possible to suitably suppress the road surface vibration during traveling of the vehicle 1 from propagating to the assembled battery 23.
  • the gravity center positions G12, G13, and G14 of the other air guide covers 31R, 33L, and 33R including the assembled battery 23 are similarly positioned, the same vibration suppressing effect can be achieved.
  • the center of gravity positions G11, G12, G13 of the wind guide covers 31L, 31R, 33L, 33R including the assembled battery 23 on the virtual straight lines L1, L2, M1, M2 excluding the boarding area 13 are shown. Since each of the wind guide covers 31L, 31R, 33L, and 33R is positioned so that the G14 is close to each other, the heavy batteries are coupled with the support of the assembled batteries 23 through the elastic members 27 and 37. By making the assembled battery 23 function as a dynamic damper (vibration control mechanism), vibration of the vehicle 1 due to road surface vibration during traveling can be suitably suppressed.
  • the unit cell 177 of this modification is formed in a flattened rectangular shape than the unit cell 77 of the above embodiment, and the positive electrode terminal 117a and the negative electrode terminal 117b are located at the middle in the vertical direction on both sides of the rectangular shape. Each is provided so as to protrude outward from both sides. Notch portions 121 and 122 are formed on both sides of the interval adjusting body pieces 119a and 119b arranged so as to surround the outer periphery of the unit cell 177, corresponding to the positions of the positive electrode terminal 117a and the negative electrode terminal 117b, respectively. Yes.
  • the member is completely removed from one of the notches 121 on each side of the interval adjusting body pieces 119a and 119b whose thickness is reduced by the inclination of the dividing surface 81 of the interval adjusting body pieces 119a and 119b.
  • the notch 122 is notched in a concave shape.
  • the cooling plate 125 constitutes a “clamping member” of the present invention.
  • Six through holes 125b through which the bolts 87 are inserted are formed in the vicinity of the outer peripheral edge along the outer periphery of the cooling plate 125.
  • the through hole 125b is formed in a circular shape substantially the same as the diameter of the bolt 87.
  • the unit cell 177 of this modification is flat compared to the unit cell 77 of the above embodiment, the capacity of the battery per unit is also small, so that the battery capacity equivalent to the unit cell 77 of the above embodiment is small.
  • more cells than the number of cells 77 in the above embodiment are required.
  • the thickness of the gap adjusting body pieces 119a and 119b and the cooling plate 125 is reduced so that the dimension in the stacking direction does not increase when the unit cell 177 and the cooling plate 125 are stacked.
  • the air holes corresponding to the air holes 82b formed in the cooling plate 71 in the above embodiment are not provided in the cooling plate 125 of this modification.
  • the unit cell 177 of this modification is easy to transmit heat to the cooling plate 125 due to its flatness, and since the number of the cooling plates 125 to be incorporated is large, the heat dissipation is relatively good. There is no problem even if pores are not provided.
  • the example of the interval adjusting body formed in a substantially rectangular frame shape surrounding the entire outer periphery of the unit cell is shown, but like the second modified example shown in FIG.
  • the outer periphery of the unit cell 77 (the outer periphery of the unit cell 77 excluding the surface sandwiched by the sandwiching surface 71a of the cooling plate 71). ) May be arranged only on the outer side of the outer peripheral portion located on both sides in the horizontal direction along the sandwiching surface 71a of the unit cell 77, not in the entire area of (1).
  • the distance adjusting body 127 of this modified example is obtained by cutting the both end portions of both distance adjusting body pieces 79a and 79b of the distance adjusting body 79 in the above-described embodiment at portions near the long holes 90a and leaving the first ends.
  • the gap adjusting body piece 129a and the second gap adjusting body piece 129b are configured.
  • interval adjustment body piece 129b comprise the "space
  • the first interval adjusting body piece 129a is composed of a thin first interval adjusting body piece 131a having a small thickness and a thick first interval adjusting body piece 131b having a large thickness.
  • the second interval adjusting body piece 129b has a thin and thin second interval adjusting body piece 133a that is bonded to the thick first interval adjusting body piece 131b and a thickness that is bonded to the thin first interval adjusting body piece 131a.
  • Thick thick second interval adjusting body piece 133b The thick first interval adjusting body piece 131b and the thick second interval adjusting body piece 133b, and the thin first interval adjusting body piece 131a and the thin second interval adjusting body piece 133a are formed in the same shape. .
  • the (dividing surface 81) is a surface parallel to the Z direction, and is inclined with respect to the contact surface of the interval adjusting body 127 when the interval adjusting body 127 is clamped by the clamping surface 71a of the cooling plate 71. .
  • the distance adjusting body 127 of this modification is provided with the parallelism of the pair of surfaces of the unit cell 77 sandwiched by the sandwiching surface 71a of the cooling plate 71 so as not to become a defective product, the thickness of the unit cell 77 Therefore, even when the pair of surfaces of the unit cell 77 to be sandwiched is not parallel, the unit cell 77 can be sandwiched in an optimum state. That is, the distance adjusting body 127 of this modification includes the relative position in the Y direction between the thick first distance adjusting body piece 131b and the thin second distance adjusting body piece 133a joined together, and the thin first distance adjusting body piece 131a.
  • the interval adjustment is also performed for the unit cell 77 whose thickness is not constant.
  • the thickness of the body 127 can be set to an optimum thickness.
  • the unit cell 77 can be held in an optimum state.
  • the interval adjusting body 127 of this modification surrounds only both sides of the unit cell 77, it does not interfere with the bus bar 80 that connects the positive terminal 77a and the negative terminal 77b of each unit cell 77. , Can save material and reduce size and weight.
  • interval adjustment body in which the joining surface (partition surface 81) with the adjustment body piece 133b inclines in the surface parallel to a Z direction was shown, like the 3rd modification shown in FIG.
  • interval adjustment body which the surface (division surface 81) inclines in the surface parallel to a Y direction may be sufficient.
  • the interval adjusting body 135 of this modification is a combination of four interval adjusting body pieces 137 having the same shape, and each of the interval adjusting body pieces 137. It is formed into a shape.
  • this modified example By joining the inclined divided surfaces 81 of the pair of distance adjusting body pieces 137 and 137 on the direction Y1 side and the direction Y2 side to face each other in the upside down direction, the bonded surface (divided surface 81) becomes the cooling plate 71. It becomes a surface parallel to the Y direction which inclines with respect to the contact surface of the space
  • this modified example also sets the relative position in the Z direction between the pair of interval adjusting body pieces 137 and 137 on the direction Y1 side and the direction Y2 side according to the uneven thickness of the unit cell 77. By adjusting each, the thickness of the space
  • cooling plate 71 in which a plurality of fins 83 that are parallel to the Y direction and the Z direction and have long heat dissipation surfaces in the Z direction are formed.
  • it may be a cooling plate 141 in which a plurality of fins 139... Having heat radiation surfaces parallel to the X direction and the Y direction are formed as in the fourth modification shown in FIG.
  • the cooling plate 141 of this modification is manufactured by extrusion molding in the Z direction at the material manufacturing stage, and the plurality of fins 139 are formed by skiving.
  • the cooling plate 141 constitutes a “clamping member” of the present invention.
  • a pin-shaped fin is formed by further cutting the plurality of fins 139 in the Z direction.
  • the cooling performance does not change greatly depending on the direction of the cooling air introduced into the fin.
  • the cooling plate 141 of this modification it is easy to arrange the assembled battery in the vehicle 1 so that the heat radiation surfaces of the plurality of fins 139 are substantially parallel to the direction in which the traveling wind flows when the vehicle 1 is traveling. Therefore, the traveling wind can be easily introduced into the heat radiation surface of each fin 139... Without guiding the cooling wind to each fin 139.
  • the cooling plate 143 is configured so that the ridge line tracing the tip of the heat radiating unit 71b of each cooling plate 143 has a substantially arc shape, so that the cooling plate 143 has a larger dimension in the Y direction as the cooling plate 143 located at the center in the X direction. 71b may be formed. By doing so, the X direction center part of the assembled battery which becomes the highest temperature at the time of charging / discharging and is likely to retain heat is effectively cooled.
  • the cooling plate 143 constitutes the “clamping member” of the present invention.
  • the side ends of the heat radiation portions 71b of the respective cooling plates 143... May be formed in a substantially arc shape so that the Y-direction dimensions of the respective cooling plates 143. .
  • the Z direction center part of each single cell 77 ... which becomes the highest temperature at the time of charging / discharging and heat tends to stay is effectively cooled.
  • the formation of the substantially arc-shaped ridge line by all the cooling plates 143 and the formation of the substantially arc-shaped shape at the end of each cooling plate 143 are only one of them depending on the temperature condition of the assembled battery 23 at the time of charging / discharging. May be adopted.
  • the above-described embodiments of the present invention and the first to fifth modifications are examples for explaining the present invention, and the present invention is not limited to the above-described embodiments and modifications.
  • the invention can be appropriately changed without departing from the gist or concept of the invention which can be read from the whole of the claims and the specification, and the assembled battery after such change is also included in the technical scope of the present invention. It is.
  • the example in which the assembled battery of the present invention is mounted on the vehicle 1 has been described.
  • the assembled battery of the present invention is mounted on a moving body such as a ship or an airplane other than the vehicle. You may do it.
  • the vehicle in which the assembled battery is mounted on the vehicle may be a three-wheeled vehicle having one wheel on the front side or the rear side and two wheels on the other side.
  • an example of a lithium ion battery has been shown as a unit cell, but in addition to this, a set in which a storage battery element such as a nickel hydride battery or other secondary battery or capacitor is a unit cell. It may be a battery.
  • a storage battery element such as a nickel hydride battery or other secondary battery or capacitor
  • Only one unit cell is sandwiched between the cooling plates.
  • a plurality of flat unit cells such as the unit cell 177 of the first modification example are provided. (For example, 2 to 3)
  • the unit cell modules configured by overlapping and surrounding the outer periphery of the unit cell group with a spacing adjuster are sandwiched by the cooling plates from both sides, and the unit cell modules and the cooling plates are stacked.
  • An assembled battery may be configured.
  • the distance adjusting body pieces of the space adjusting body divided by the inclined dividing surface are relatively displaced so that the thickness of the space adjusting body is the thickness of the unit cell.
  • a plurality of gap adjusting body pieces having front and back surfaces that are parallel to each other without being inclined are appropriately selected and laminated.
  • the thickness of the interval adjusting body may be set to the predetermined thickness.
  • the inclined division pieces may be increased.

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Abstract

The present invention provides the following: a battery pack with which even if the battery pack is deformed in a bow shape causing an excessive compression load to be generated, there is no fear of the electrode of a single battery becoming damaged or an electrical short occurring inside a single battery; a mobile body provided with the battery pack; and a production method for the battery pack. In a state of being sandwiched by cooling plates (71), a single battery (77) and a gap adjusting body (79) that is provided at the outer circumference of the single battery are held together by end plates (85), bolts (87), and nuts (89). The compression stiffness of the single battery and the gap adjusting body is configured so that the compression stiffness of the gap adjusting body is higher than the single battery.

Description

組電池およびこれを搭載した移動体ならびに組電池の製造方法Assembled battery, moving body equipped with the same, and method of manufacturing assembled battery
本発明は、複数の単電池を組み合わせてなる組電池およびその組電池を搭載した移動体ならびに組電池の製造方法に関するものである。 The present invention relates to an assembled battery obtained by combining a plurality of single cells, a mobile body equipped with the assembled battery, and a method for manufacturing the assembled battery.
　特許文献１に示されている従来の組電池は、複数の単電池（リチウムイオン電池）と、表面に絶縁処理が施された複数の金属放熱板とを交互に積層した積層体を備えている。積層体の周囲には、一対の端板と、端板に取り付けられた締め付けベルトとが設けられ、一対の端板と締め付けベルトとは相互に締め付けられている。 The conventional assembled battery shown in Patent Document 1 includes a laminate in which a plurality of single cells (lithium ion batteries) and a plurality of metal heat radiating plates whose surfaces are insulated are alternately laminated. . A pair of end plates and a fastening belt attached to the end plates are provided around the laminated body, and the pair of end plates and the fastening belt are fastened to each other.
特開２００４－２２７７８８号公報JP 2004-227788 A
　しかしながら、従来の組電池では、組電池が搭載された車両の走行時の路面振動により、一対の端板間の組電池の中央部が最も大きく上下動して組電池が弓形状に変形すると、その弓形状の凹側に過度の圧縮荷重が発生する。長手方向中央部の上部に圧縮荷重が発生した様子を図２１に模式的に図示している。なお、図２１では、組電池が弓形状に変形した状態を誇張して図示している。このように、過度の圧縮荷重が発生すると、その圧縮荷重が個々の単電池に加わって単電池の電極が破損したり単電池の内部が電気的に短絡する虞があった。 However, in a conventional assembled battery, when the assembled battery is deformed into a bow shape by the largest vertical movement of the central portion of the assembled battery between the pair of end plates due to road surface vibration during traveling of the vehicle on which the assembled battery is mounted, An excessive compressive load is generated on the concave side of the bow shape. FIG. 21 schematically shows a state in which a compressive load is generated in the upper part of the central portion in the longitudinal direction. In FIG. 21, the state where the assembled battery is deformed into a bow shape is exaggerated. As described above, when an excessive compressive load is generated, the compressive load is applied to each unit cell, and the electrode of the unit cell may be damaged or the inside of the unit cell may be electrically short-circuited.
　本発明は、このような問題を解消するためになされたもので、組電池が弓形状に変形して過度の圧縮荷重が発生しても、単電池の電極が破損したり単電池の内部が電気的に短絡する虞がない組電池およびその組電池を搭載した移動体を提供することを目的とする。 The present invention has been made to solve such a problem, and even if the battery pack is deformed into a bow shape and an excessive compressive load is generated, the electrode of the battery cell may be damaged or the inside of the battery cell may be damaged. It aims at providing the assembled battery which does not have a possibility of electrically short-circuiting, and the mobile body carrying the assembled battery.
　この目的を達成するために、本発明に係る組電池は、単電池を挟持する平坦な挟持面を備え、この挟持面に垂直な方向に間隙を隔てて前記挟持面同士が平行に対向する状態で並設された複数の挟持部材と、前記間隙のそれぞれに置された単電池と、前記挟持部材の挟持面で挟持された両面を除く前記単電池の外周の外側方でかつ前記間隙のそれぞれに別個に配置された間隔調整体と、前記単電池と前記間隔調整体とが前記挟持部材の挟持面で挟持された状態でその挟持を保持する保持部材とを備える組電池であって、前記挟持部材で挟持されたときの前記単電池と前記間隔調整体との圧縮剛性は、前記単電池より前記間隔調整体の方が高くなるように構成されていることを特徴とするものである。 In order to achieve this object, the assembled battery according to the present invention has a flat clamping surface for clamping the unit cell, and the clamping surfaces face each other in parallel with a gap in a direction perpendicular to the clamping surface. A plurality of sandwiching members arranged side by side, a unit cell placed in each of the gaps, and outside each outer periphery of the unit cell excluding both surfaces sandwiched by a sandwiching surface of the sandwiching member, and each of the gaps A battery pack comprising: a space adjusting body disposed separately; and a holding member that holds the single battery and the space adjusting body in a state of being held by a holding surface of the holding member. The compression rigidity of the unit cell and the interval adjusting body when sandwiched by the clamping member is configured such that the interval adjusting unit is higher than the unit cell.
　請求項２に記載した発明に係る組電池は、請求項１に記載の組電池において、前記間隔調整体は、前記挟持部材の挟持面で挟持された両面を除く前記単電池の外周を囲繞するように枠状に形成されていることを特徴とするものである。
　請求項３に記載した発明に係る組電池は、請求項１に記載の組電池において、前記挟持部材の挟持面で挟持された両面を除く前記単電池の外周のうち、前記単電池の前記挟持面に沿う水平方向両側にそれぞれ位置する外周部分の外側方にのみ前記間隔調整体がそれぞれ配置されていることを特徴とするものである。
　請求項４に記載した発明に係る組電池は、請求項１ないし請求項３のうち何れか一つに記載の組電池において、前記間隔調整体は、隣り合う前記挟持部材同士の対向する一対の挟持面のうち一方の挟持面に当接する前記間隔調整体の当接面と、前記一対の挟持面のうち他方の挟持面に当接する前記間隔調整体の当接面との間に位置付けられた分割面で分割接合され、前記分割面は、前記間隔調整体の当接面に対して傾斜していることを特徴とするものである。 An assembled battery according to a second aspect of the present invention is the assembled battery according to the first aspect, wherein the spacing adjuster surrounds an outer periphery of the unit cell except for both surfaces sandwiched by a sandwiching surface of the sandwiching member. Thus, it is formed in a frame shape.
An assembled battery according to a third aspect of the present invention is the assembled battery according to the first aspect, wherein the sandwiching of the single battery out of the outer periphery of the single battery excluding both surfaces sandwiched by the sandwiching surface of the sandwiching member. The spacing adjusting bodies are respectively arranged only on the outer sides of the outer peripheral portions located on both sides in the horizontal direction along the surface.
An assembled battery according to a fourth aspect of the present invention is the assembled battery according to any one of the first to third aspects, wherein the spacing adjusting body is a pair of adjacent clamping members facing each other. Positioned between the abutting surface of the spacing adjustment body that abuts one clamping surface of the clamping surfaces and the abutting surface of the spacing adjustment body that abuts the other clamping surface of the pair of clamping surfaces It is divided and joined by a dividing surface, and the dividing surface is inclined with respect to the contact surface of the interval adjusting body.
　請求項５に記載した発明に係る組電池は、請求項１ないし請求項４のうち何れか一つに記載の組電池において、前記挟持部材は、前記単電池で発生した熱が前記単電池と当接して伝播する受熱部と、前記受熱部の側縁に設けられ前記受熱部に伝播した熱を前記組電池の外部に放出する放熱部とを備え、前記放熱部は、前記挟持部材で挟持した前記間隔調整体の外周より外方に位置付けられていることを特徴とするものである。
　請求項６に記載した発明に係る組電池は、請求項５に記載の組電池において、前記放熱部には放熱面を有する複数のフィンが形成され、これらのフィンが薄肉に形成されていることで前記放熱部は、前記間隔調整体より衝撃強度が低くなるように構成されていることを特徴とするものである。
　請求項７に記載した発明に係る組電池は、請求項５または請求項６に記載の組電池において、前記挟持部材の挟持面に垂直な方向の前記放熱部の幅寸法は、同方向の前記受熱部の幅寸法より大きく、同方向の前記受熱部の幅寸法と同方向の前記間隔調整体の幅寸法とを合わせた寸法より小さいことを特徴とするものである。 An assembled battery according to a fifth aspect of the present invention is the assembled battery according to any one of the first to fourth aspects, wherein the sandwiching member is configured such that heat generated in the single battery generates heat from the single battery. A heat receiving portion that propagates in contact with the heat receiving portion; and a heat radiating portion that is provided at a side edge of the heat receiving portion and releases heat transmitted to the heat receiving portion to the outside of the assembled battery. The heat radiating portion is sandwiched by the clamping member. It is characterized by being positioned outward from the outer periphery of the interval adjusting body.
The assembled battery according to the invention described in claim 6 is the assembled battery according to claim 5, wherein a plurality of fins having a heat dissipation surface are formed in the heat dissipation portion, and these fins are formed thin. The heat radiating portion is configured to have an impact strength lower than that of the interval adjusting body.
The assembled battery according to the invention described in claim 7 is the assembled battery according to claim 5 or claim 6, wherein the width dimension of the heat radiating portion in the direction perpendicular to the clamping surface of the clamping member is the same in the same direction. It is larger than the width dimension of a heat receiving part, and is smaller than the dimension which combined the width dimension of the said heat receiving part of the same direction, and the width dimension of the said space | interval adjustment body of the same direction.
　請求項８に記載した発明に係る移動体は、請求項１ないし請求項７のうち何れか一つに記載の組電池を搭載したものである。
　請求項９に記載した発明に係る移動体は、請求項８に記載の移動体において、前記組電池は、前記挟持部材の挟持面に垂直な方向の両端部が移動体の本体に固定された固定部材にそれぞれ固定され、前記移動体の本体に対する前記固定部材の固定位置または前記組電池の両端部の前記固定部材に対する固定位置のうち少なくとも何れか一方の固定位置は、前記両端部間の距離に応じて任意に調整可能に構成され、前記移動体の本体に対する前記固定部材の固定位置の調整は、前記固定部材に穿設された長孔からなる挿通孔に挿通されたねじ部材が前記移動体の本体に螺着されて前記固定部材が前記移動体の本体に固定され、前記挿通孔内における前記ねじ部材の相対位置を変更することで行われ、前記組電池の両端部の前記固定部材に対する固定位置の調整は、前記組電池の両端部がそれぞれ弾性部材を介して前記固定部材に支持され、前記組電池の両端部と前記弾性部材との相対位置を変更することで行われることを特徴とするものである。 According to an eighth aspect of the present invention, there is provided a moving body in which the assembled battery according to any one of the first to seventh aspects is mounted.
According to a ninth aspect of the present invention, there is provided the movable body according to the eighth aspect, wherein both ends of the assembled battery in a direction perpendicular to the clamping surface of the clamping member are fixed to the main body of the movable body. The fixed position of the fixed member relative to the main body of the movable body or the fixed position of the both ends of the assembled battery with respect to the fixed member is a distance between the two ends. The fixing position of the fixing member relative to the main body of the moving body is adjusted by adjusting the position of the screw member inserted through an insertion hole made of a long hole formed in the fixing member. The fixing member is fixed to the main body of the movable body by being screwed to the main body of the body, and is performed by changing the relative position of the screw member in the insertion hole, and the fixing members at both ends of the assembled battery. Against The adjustment of the fixed position is performed by changing the relative positions of the both ends of the assembled battery and the elastic member, with both ends of the assembled battery being supported by the fixing member via elastic members, respectively. It is what.
　請求項１０に記載した発明に係る移動体は、請求項９に記載の移動体において、前記固定部材は、その水平方向の衝撃強度が鉛直方向の衝撃強度より低くなるように構成されていることを特徴とするものである。
　請求項１１に記載した発明に係る移動体は、請求項９または請求項１０に記載の移動体において、前記組電池は、前記挟持部材の挟持面に垂直な方向の両端部が前記固定部材にそれぞれ前記弾性部材を介して固定され、前記組電池の両端部を除く他の部位の固定位置も移動体の本体に設けられた他の固定部材に他の弾性部材を介して固定され、前記組電池の両端部の前記固定部材に対する両固定位置は、それらの両固定位置を通る仮想直線上に前記組電池の重心位置が近接するように位置付けられ、前記他の部位の固定位置は、前記仮想直線と直交すると共に前記組電池の重心位置を通る他の仮想直線上に近接するように位置付けられることを特徴とするものである。 The mobile body according to the invention described in claim 10 is the mobile body according to claim 9, wherein the fixed member is configured such that the impact strength in the horizontal direction is lower than the impact strength in the vertical direction. It is characterized by.
The movable body according to an eleventh aspect of the present invention is the movable body according to the ninth or tenth aspect, wherein the assembled battery has both end portions in a direction perpendicular to the clamping surface of the clamping member at the fixed member. The fixed positions of the other parts excluding both end portions of the assembled battery are fixed via the elastic members, and fixed to other fixing members provided in the main body of the movable body via the other elastic members. Both fixed positions of the both ends of the battery with respect to the fixing member are positioned so that the center of gravity position of the assembled battery is close to the virtual straight line passing through both the fixed positions, and the fixed positions of the other parts are the virtual positions It is positioned so as to be close to another virtual straight line passing through the center of gravity of the assembled battery while being orthogonal to the straight line.
　請求項１２に記載した発明に係る移動体は、請求項８ないし請求項１１のうち何れか一つに記載の移動体において、前記移動体は、平面視においてその中央部に配設され乗員が搭乗するための乗車領域と、前記乗車領域の前側または後側の少なくとも何れか一方側に配設された左右一対の車輪とを備えた車両からなり、前記平面視において、前記車両の重心位置と前記車輪の接地位置との間の前記乗車領域を除く領域であってこれら両位置を結ぶ仮想直線上に前記組電池の重心位置が近接するように前記組電池が位置付けられることを特徴とするものである。
　請求項１３に記載した発明に係る組電池の製造方法は、単電池の厚さを計測する工程と、傾斜した分割面で一対の間隔調整体片に分割された間隔調整体の前記分割面同士を当接した状態で前記分割面の傾斜する方向に沿って前記一対の間隔調整体片同士を相対変位させて、前記間隔調整体の厚さを前記単電池の厚さに対応した所定の厚さにする工程と、前記間隔調整体を前記単電池の外周側に配置する工程と、前記単電池の外周側に配置した前記間隔調整体と前記単電池との組み合わせからなる複数の単電池モジュールを、平坦な挟持面を備えた複数の挟持部材の間にそれぞれ介在させ前記単電池と前記間隔調整体とを前記挟持部材で挟持した状態でその挟持を保持部材で保持する工程とを備えるものである。 The mobile body according to the invention described in claim 12 is the mobile body according to any one of claims 8 to 11, wherein the mobile body is disposed at a central portion in plan view, and A vehicle having a boarding area for boarding and a pair of left and right wheels disposed on at least one of the front side and the rear side of the boarding area, and in the plan view, The assembled battery is positioned so that the center of gravity position of the assembled battery is close to a virtual straight line connecting both positions in a region excluding the boarding region between the wheel and the ground contact position. It is.
The method for manufacturing an assembled battery according to the invention described in claim 13 includes a step of measuring the thickness of the unit cell, and the divided surfaces of the space adjusting body divided into a pair of space adjusting body pieces at an inclined dividing surface. The pair of interval adjusting body pieces are relatively displaced along the direction in which the dividing surface inclines in a state where they are in contact with each other, and the thickness of the interval adjusting body is set to a predetermined thickness corresponding to the thickness of the unit cell. A plurality of unit cell modules comprising a combination of the step of disposing the gap adjusting body on the outer peripheral side of the unit cell, and the unit of adjusting the spacing arranged on the outer peripheral side of the unit cell. Is interposed between a plurality of clamping members each having a flat clamping surface, and the cell and the gap adjusting body are clamped by the clamping member, and the clamping is held by a holding member. It is.
　請求項１記載の発明によれば、単電池と間隔調整体とが挟持部材の挟持面で挟持され、かつ、単電池と間隔調整体との圧縮剛性は単電池より間隔調整体の方が高くなるように構成されているので、各間隔調整体の厚さを適宜設定することで保持部材で強固に挟持しても単電池を損傷する虞がなく最適な圧縮力で各単電池を挟持し、その挟持を保持することができる。
　請求項２記載の発明によれば、間隔調整体は、単電池の外周を囲繞する枠状に形成されているので、間隔調整体によって単電池を保護することができる。
　請求項３記載の発明によれば、挟持部材の挟持面で挟持された両面を除く単電池の外周のうち、単電池の挟持面に沿う水平方向両側にそれぞれ位置する外周部分の外側方にのみ間隔調整体をそれぞれ配置するようにしたので、厚さが一定でない単電池に対しても、その不均一な厚さに応じてそれぞれの間隔調整体の厚さを最適な厚さに個別に設定することで単電池を最適な状態で挟持することができる。
　請求項４記載の発明によれば、間隔調整体は、傾斜した分割面で分割接合されているので、分割した一対の間隔調整体片同士を分割面の傾斜した方向に沿って相対的に適宜変位させることで、間隔調整体の厚さを各単電池ごとの厚さに対応した厚さにすることができる。
　請求項５記載の発明によれば、放熱部は、挟持部材で挟持した間隔調整体の外周より外方に位置付けられているので、放熱部によって間隔調整体および単電池を保護することができる。 According to the first aspect of the present invention, the unit cell and the spacing member are clamped by the clamping surface of the clamping member, and the compression stiffness between the unit cell and the spacing unit is higher in the spacing unit than in the unit cell. Therefore, by setting the thickness of each gap adjustment body appropriately, there is no risk of damaging the cell even if it is firmly held by the holding member. , The holding can be held.
According to the second aspect of the present invention, since the interval adjuster is formed in a frame shape surrounding the outer periphery of the unit cell, the unit cell can be protected by the interval adjuster.
According to the invention described in claim 3, of the outer periphery of the unit cell excluding both surfaces sandwiched by the sandwiching surface of the sandwiching member, it is only on the outer side of the outer peripheral part respectively positioned on both sides in the horizontal direction along the sandwiching surface of the unit cell. Since the interval adjusters are arranged individually, the thickness of each interval adjuster is individually set to the optimum thickness according to the non-uniform thickness even for single cells with non-uniform thickness. By doing so, the unit cell can be clamped in an optimum state.
According to the invention described in claim 4, since the interval adjusting body is divided and joined by the inclined dividing surface, the pair of divided interval adjusting body pieces are relatively appropriately arranged along the inclined direction of the dividing surface. By displacing, the thickness of the interval adjusting body can be made to correspond to the thickness of each unit cell.
According to the invention described in claim 5, since the heat dissipating part is positioned outward from the outer periphery of the interval adjusting body sandwiched by the holding members, the interval adjusting body and the unit cell can be protected by the heat dissipating part.
　請求項６記載の発明によれば、放熱部には放熱面を有する複数のフィンが形成され、これらのフィンが薄肉に形成されていることで放熱部は、間隔調整体より衝撃強度が低くなるように構成されているので、組電池に外部から衝撃力が加わった場合は、放熱部が塑性変形して衝撃を吸収することで単電池が保護される。
　請求項７記載の発明によれば、挟持部材の挟持面に垂直な方向の放熱部の幅寸法は、同方向の受熱部の幅寸法より大きく、同方向の前記受熱部の幅寸法と同方向の前記間隔調整体の幅寸法とを合わせた寸法より小さいので、放熱部の幅寸法が可及的大きく設定され、放熱部の面積を広くすることができ、冷却性能を十分確保することができる。
　請求項８記載の発明によれば、移動体に組電池を搭載したので、組電池を移動体の電源として有効に活用することができる。 According to the sixth aspect of the present invention, the heat radiating portion is formed with a plurality of fins having a heat radiating surface, and these fins are formed thin so that the heat radiating portion has a lower impact strength than the spacing adjuster. Thus, when an impact force is applied to the assembled battery from the outside, the heat radiating portion is plastically deformed to absorb the impact, thereby protecting the unit cell.
According to the seventh aspect of the present invention, the width dimension of the heat radiating part in the direction perpendicular to the clamping surface of the clamping member is larger than the width dimension of the heat receiving part in the same direction and the same direction as the width dimension of the heat receiving part in the same direction. Therefore, the width dimension of the heat radiating portion is set as large as possible, the area of the heat radiating portion can be widened, and the cooling performance can be sufficiently secured. .
According to the eighth aspect of the invention, since the assembled battery is mounted on the moving body, the assembled battery can be effectively used as a power source for the moving body.
　請求項９記載の発明によれば、移動体の本体に対する固定部材の固定位置または組電池の固定部材に対する固定位置のうち少なくとも何れか一方の固定位置は、組電池の両端部間の距離に応じて任意に調整可能に構成されているので、組電池の両端部間の寸法の製造上のばらつきに対応することができる。
　請求項１０記載の発明によれば、固定部材は、その水平方向の衝撃強度が鉛直方向の衝撃強度より低くなるように構成されているので、車両の走行中に組電池または固定部材に障害物が衝突して衝撃荷重が加わった場合でも、固定部材が水平方向に容易に塑性変形するため組電池への損傷を低減することができる。 According to the ninth aspect of the present invention, at least one of the fixing position of the fixing member with respect to the main body of the movable body and the fixing position with respect to the fixing member of the assembled battery depends on the distance between both ends of the assembled battery. Therefore, it is possible to cope with manufacturing variations in dimensions between both ends of the assembled battery.
According to the tenth aspect of the present invention, the fixing member is configured such that the impact strength in the horizontal direction is lower than the impact strength in the vertical direction. Even when an impact load is applied due to collision, the fixing member can be easily plastically deformed in the horizontal direction, so that damage to the assembled battery can be reduced.
　請求項１１記載の発明によれば、固定部材に対する組電池の両端部の各固定位置は、それらの各固定位置を通る仮想直線上に組電池の重心位置が近接するように位置付けられる一方、組電池の他の部位の固定位置は、組電池の重心位置を通る他の仮想直線上に近接するように位置付けられるので、弾性部材を介して組電池が支持されることと相俟って、移動体の移動時の振動が組電池に伝播するのを好適に抑制することができる。
　請求項１２記載の発明によれば、平面視において、車両の重心位置と車輪の接地位置との間の乗車領域を除く領域であって両位置を結ぶ仮想直線上に組電池の重心位置が近接するように組電池が位置付けられるので、弾性部材を介して組電池が支持されることと相俟って、重量物である組電池をダイナミックダンパー（制振機構）として機能させて走行時の路面振動による車両の振動を好適に抑制することができる。
　請求項１３記載の発明によれば、傾斜した分割面で一対の間隔調整体片に分割された間隔調整体の分割面同士を当接した状態で分割面の傾斜する方向に沿って一対の間隔調整体片同士を相対変位させて、間隔調整体の厚さを単電池の厚さに対応した所定の厚さにするようにしたので、間隔調整体の厚さを各単電池ごとの厚さに対応した厚さにすることができる。これに加え、単電池と間隔調整体との圧縮剛性を単電池より間隔調整体の方が高くなるように構成することで、保持部材で強固に挟持しても単電池を損傷する虞がなく最適な圧縮力で各単電池を挟持し、その挟持を保持することができる。 According to the eleventh aspect of the invention, the fixed positions of both ends of the assembled battery with respect to the fixing member are positioned so that the center of gravity of the assembled battery is close to the virtual straight line passing through the fixed positions. Since the fixed position of the other part of the battery is positioned so as to be close to another virtual straight line passing through the center of gravity position of the assembled battery, it moves in combination with the support of the assembled battery via the elastic member. It can suppress suitably that the vibration at the time of a body movement propagates to an assembled battery.
According to the twelfth aspect of the present invention, in plan view, the center of gravity position of the assembled battery is close to a virtual straight line connecting both positions in a region excluding the riding region between the center of gravity position of the vehicle and the ground contact position of the wheel. Since the assembled battery is positioned so that the assembled battery is supported through the elastic member, the assembled battery, which is a heavy object, functions as a dynamic damper (vibration control mechanism) to drive the road surface The vibration of the vehicle due to the vibration can be suitably suppressed.
According to the thirteenth aspect of the present invention, a pair of intervals along the direction in which the dividing surfaces are inclined in a state where the dividing surfaces of the interval adjusting bodies divided into the pair of interval adjusting body pieces are in contact with each other at the inclined dividing surfaces. Since the adjusting body pieces are relatively displaced so that the thickness of the interval adjusting body is set to a predetermined thickness corresponding to the thickness of the unit cell, the thickness of the interval adjusting unit is set to the thickness of each unit cell. It is possible to make the thickness corresponding to. In addition to this, the compression rigidity between the unit cell and the interval adjustment body is configured so that the interval adjustment unit is higher than the unit cell, so that there is no possibility of damaging the unit cell even when firmly held by the holding member. Each single cell can be clamped with an optimal compressive force, and the clamping can be maintained.
本発明の実施の形態に係る組電池を搭載した車両を前方斜め上方から見た状態を示す車両全体図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall view of a vehicle showing a state in which a vehicle equipped with an assembled battery according to an embodiment of the present invention is viewed from diagonally forward and upward. 図１の車両を上方から見た状態の概略の構成を模式的に示す平面図である。FIG. 2 is a plan view schematically showing a schematic configuration in a state where the vehicle of FIG. 1 is viewed from above. 同車両の車体フレームに組電池を固定する構造を示す図である。It is a figure which shows the structure which fixes an assembled battery to the vehicle body frame of the vehicle. 同車両の車体フレームに固定した組電池をその一方の端部側の斜め上方から見た状態を示す図である。It is a figure which shows the state which looked at the assembled battery fixed to the vehicle body frame of the vehicle from diagonally upward of the one end part side. 同車両の車体フレームに固定した組電池をその一方の端部側の斜め下方から見た状態を示す図である。It is a figure which shows the state which looked at the assembled battery fixed to the vehicle body frame of the vehicle from the diagonally lower side of the one edge part side.
本発明の実施の形態に係る組電池が導風カバーで覆われた状態を、該カバーおよび組電池のそれぞれの一部を破断して側方斜め上方から見た状態を示す図である。It is a figure which shows the state which fractured | ruptured each part of this cover and an assembled battery, and was seen from the diagonally upward direction in the state where the assembled battery which concerns on embodiment of this invention was covered with the wind guide cover. 本発明の実施の形態に係る組電池を側方斜め上方から見た状態を示す外観図である。It is an external view which shows the state which looked at the assembled battery which concerns on embodiment of this invention from side diagonally upward. 本発明の実施の形態に係る組電池を分解した状態を示す外観図である。It is an external view which shows the state which decomposed | disassembled the assembled battery which concerns on embodiment of this invention. 分解した組電池の一部の部材を示す外観図である。It is an external view which shows some members of the assembled battery which decomposed | disassembled. 本発明の実施の形態に係る組電池の組み立て手順を示すフローチャートである。It is a flowchart which shows the assembly procedure of the assembled battery which concerns on embodiment of this invention. 本発明の実施の形態に係る組電池の組み立て手順の一部を模式図で示すフローチャートである。It is a flowchart which shows a part of assembly procedure of the assembled battery which concerns on embodiment of this invention with a schematic diagram.
本発明の実施の形態に係る組電池の単電池と間隔調整体との厚さの関係を示す図である。It is a figure which shows the relationship of the thickness of the cell of the assembled battery which concerns on embodiment of this invention, and a space | interval adjustment body. 本発明の実施の形態に係る組電池の組み立て作業の１つを示す図である。It is a figure which shows one of the assembly operations of the assembled battery which concerns on embodiment of this invention. 同車両の車体フレームに組電池の底部を固定する構造を、一部を破断して示す側面図である。It is a side view which fractures | ruptures a part and shows the structure which fixes the bottom part of an assembled battery to the vehicle body frame of the vehicle. 本発明の実施の形態の第１変形例に係る組電池を分解した状態を示す外観図である。It is an external view which shows the state which decomposed | disassembled the assembled battery which concerns on the 1st modification of embodiment of this invention. 同第１変形例の分解した組電池の一部の部材を示す外観図である。It is an external view which shows a one part member of the assembled battery decomposed | disassembled of the 1st modification. 本発明の実施の形態の第２変形例に係る組電池の一部の部材を示す外観図である。It is an external view which shows a one part member of the assembled battery which concerns on the 2nd modification of embodiment of this invention.
本発明の実施の形態の第３変形例に係る組電池の一部の部材を示す外観図である。It is an external view which shows a one part member of the assembled battery which concerns on the 3rd modification of embodiment of this invention. 本発明の実施の形態の第４変形例に係る組電池の一部の部材を示す外観図である。It is an external view which shows a one part member of the assembled battery which concerns on the 4th modification of embodiment of this invention. 本発明の実施の形態の第５変形例に係る組電池を側方斜め上方から見た状態を示す外観図である。It is an external view which shows the state which looked at the assembled battery which concerns on the 5th modification of embodiment of this invention from the side diagonally upward. 従来の組電池の問題点を説明するための模式図である。It is a schematic diagram for demonstrating the problem of the conventional assembled battery.
　以下、本発明の実施の形態を図１ないし図１４によって詳細に説明する。図１および図２において符号１で示すものは、本発明の実施の形態に係る組電池を搭載した移動体の一例である車両である。矢印Ｆで示す方向は、車両１の前方を示し、車両１の前部には左右一対の前輪３，３が前側懸架装置５を介して車体フレーム７に搖動自在に懸架され、車両１の後部には左右一対の後輪９，９が後側懸架装置１１を介して車体フレーム７に搖動自在に懸架されている。前輪３，３および後輪９，９は、本発明の「車輪」を構成する。 Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. What is shown by the code | symbol 1 in FIG. 1 and FIG. 2 is a vehicle which is an example of the mobile body carrying the assembled battery which concerns on embodiment of this invention. The direction indicated by the arrow F indicates the front of the vehicle 1, and a pair of left and right front wheels 3, 3 are suspended on the vehicle body frame 7 via the front suspension device 5 at the front of the vehicle 1. A pair of left and right rear wheels 9, 9 are suspended on the body frame 7 via a rear suspension device 11 so as to be freely slidable. The front wheels 3 and 3 and the rear wheels 9 and 9 constitute the “wheel” of the present invention.
　車体フレーム７は、その前後方向中央部において、車両１の左右方向にそれぞれ広がる中央フレーム７ａを備え、該中央フレーム７ａは平面視において六角形状に形成されている。車体フレーム７および中央フレーム７ａは、本発明の「移動体の本体」を構成する。車体フレーム７は、中央フレーム７ａを含めて、その横断面が四角形状に形成された中空管で構成されている。中央フレーム７ａ上は、乗員が搭乗するための乗車領域１３となっており、この乗車領域１３には、図１に示すように、乗員が着座するためシート１５と、シート１５の前方にフロア１７が設けられている。 The vehicle body frame 7 includes a center frame 7a that extends in the left-right direction of the vehicle 1 at the center in the front-rear direction, and the center frame 7a is formed in a hexagonal shape in plan view. The body frame 7 and the center frame 7a constitute the “main body of the moving body” of the present invention. The vehicle body frame 7 includes a hollow tube having a square cross section including the central frame 7a. On the central frame 7a, there is a boarding area 13 for passengers to board. In this boarding area 13, as shown in FIG. 1, a seat 15 for passengers to sit and a floor 17 in front of the seats 15 are provided. Is provided.
　シート１５とフロア１７とは遮蔽体１９で覆われ、遮蔽体１９の前部は透明体２１が組み付けられている。遮蔽体１９と透明体２１とで略球状の乗車室が形成されている。車体フレーム７の前部と後部との中空管の外周には、横断面が矩形状の筒状の衝撃吸収部材２２がそれぞれ嵌合されボルトまたは溶接により固定されている。車両１が障害物に衝突したとき、ボルトまたは溶接部が破損して衝撃吸収部材２２が車体フレーム７に対して相対移動することで衝撃を吸収するように構成されている。 The sheet 15 and the floor 17 are covered with a shield 19, and a transparent body 21 is assembled to the front of the shield 19. The shield 19 and the transparent body 21 form a substantially spherical passenger compartment. On the outer periphery of the hollow tube of the front part and the rear part of the body frame 7, a cylindrical shock absorbing member 22 having a rectangular cross section is fitted and fixed by bolts or welding. When the vehicle 1 collides with an obstacle, the bolt or the welded portion is broken, and the shock absorbing member 22 is moved relative to the vehicle body frame 7 to absorb the shock.
　図２に示すように平面視において、左右の前輪３，３と乗車領域１３との間にそれぞれ組電池２３が配置され、左右の後輪９，９と乗車領域１３との間にもそれぞれ組電池２３が配置され、合計４個の組電池２３が搭載されている。組電池２３は、車両１に搭載される電気機器に電力を供給するものであり、該電気機器としては、前輪３，３または後輪９，９を回転駆動するための電動モータ、ヘッドライト等の灯火器および前記電動モータを制御するための制御装置等が挙げられる。その他、車両１には前輪３，３を操舵するためのハンドルも備えている。なお、作図の都合上、電気機器やハンドル等は図示を省略している。 As shown in FIG. 2, the assembled batteries 23 are arranged between the left and right front wheels 3, 3 and the riding area 13 in a plan view, and the assembled batteries 23 are also arranged between the left and right rear wheels 9, 9 and the riding area 13. A battery 23 is arranged, and a total of four assembled batteries 23 are mounted. The assembled battery 23 supplies electric power to an electric device mounted on the vehicle 1, and the electric device includes an electric motor, a headlight, and the like for rotationally driving the front wheels 3, 3 or the rear wheels 9, 9. And a control device for controlling the electric motor. In addition, the vehicle 1 also includes a handle for steering the front wheels 3 and 3. For convenience of drawing, illustration of electrical devices, handles, etc. is omitted.
　各組電池２３…は、車両１の平面視において、中央フレーム７ａの六角形状の前側２辺に相当する部位と後側２辺に相当する部位とにそれぞれ一定の間隙を隔てて対向するように配置され、中央フレーム７ａに固定されている。詳細には各組電池２３…は、中央フレーム７ａの六角形状の前側および後側の各２辺に相当する部位にそれぞれ一端部が固定された一対の支持ブラケット２５，２５の他端部間にそれぞれ弾性部材２７を介して架設されている。各支持ブラケット２５…は、図３の（Ｃ）図に示す側面視においてコの字状に形成された基部２５ａと、同側面視において該基部２５ａの側端面から延設された略二等辺三角形状の本体部２５ｂとを備え、本体部２５ｂの略二等辺三角形状の頂点に相当する部位に組電池２３が弾性部材２７を介して固定されている。支持ブラケット２５，２５は、本発明の「固定部材」を構成する。 Each of the assembled batteries 23 is opposed to a portion corresponding to the two hexagonal front sides and a portion corresponding to the two rear sides of the central frame 7a with a certain gap in plan view of the vehicle 1. Arranged and fixed to the central frame 7a. Specifically, each of the assembled batteries 23 is between the other end portions of a pair of support brackets 25, 25 each having one end portion fixed to a portion corresponding to each of the two sides of the hexagonal front side and rear side of the central frame 7a. Each is erected via an elastic member 27. Each support bracket 25 has a base 25a formed in a U shape in a side view shown in FIG. 3C and a substantially isosceles triangle extending from a side end surface of the base 25a in the side view. The battery pack 23 is fixed to the portion corresponding to the apex of the substantially isosceles triangle shape of the main body portion 25b via the elastic member 27. The support brackets 25 and 25 constitute a “fixing member” of the present invention.
　弾性部材２７による固定構造の詳細については後述する。支持ブラケット２５の基部２５ａは、中央フレーム７ａを上下で挟み込んだ状態でねじ部材２９により中央フレーム７ａに螺着されている。ねじ部材２９が挿通される支持ブラケット２５の基部２５ａに穿設された挿通孔は、中央フレーム７ａの六角形状の辺に沿う方向に長い長円状の長孔に形成されている（図４および図５参照）。なお、この長孔は、組電池２３の両端部を支持する一対の支持ブラケット２５，２５のうち何れか一方の支持ブラケット２５のみに形成するようにしてもよい。この長孔を設けたことで、中央フレーム７ａの六角形状の辺に沿う方向に支持ブラケット２５を変位させて固定位置を任意に調整することができる。 Details of the fixing structure by the elastic member 27 will be described later. The base 25a of the support bracket 25 is screwed to the central frame 7a by a screw member 29 with the central frame 7a sandwiched between the upper and lower sides. The insertion hole formed in the base portion 25a of the support bracket 25 through which the screw member 29 is inserted is formed as an oblong slot that is long in the direction along the hexagonal side of the center frame 7a (see FIG. 4 and FIG. 4). (See FIG. 5). In addition, you may make it form this elongate hole only in any one support bracket 25 among a pair of support brackets 25 and 25 which support the both ends of the assembled battery 23. FIG. By providing this long hole, the support bracket 25 can be displaced in a direction along the hexagonal side of the central frame 7a, and the fixing position can be arbitrarily adjusted.
　支持ブラケットは車両１が走行中に受ける上下方向の振動に対して組電池２３を支持するため充分な機械的強度を有し、また、車両１が走行中に、支持ブラケット２５または支持ブラケット２５に取り付けられた組電池２３が障害物に衝突した場合、組電池２３が水平方向に移動し伝達される衝撃を吸収するように、一対の支持ブラケット２５，２５は、その水平方向の衝撃強度が鉛直方向の衝撃強度より低くなるように構成されている。 The support bracket has sufficient mechanical strength to support the assembled battery 23 against vertical vibrations that the vehicle 1 receives while traveling, and is also attached to the support bracket 25 or the support bracket 25 while the vehicle 1 is traveling. When the assembled battery 23 that has been attached collides with an obstacle, the pair of support brackets 25 and 25 have a vertical impact strength that is vertical so that the assembled battery 23 moves in the horizontal direction and absorbs the transmitted shock. It is comprised so that it may become lower than the impact strength of a direction.
　また、車両１の前側に配置された左右の組電池２３，２３の表面は、その大部分が導風カバー３１Ｌ，３１Ｒでそれぞれ覆われており、車両１の後側に配置された左右の組電池２３，２３の表面は、その大部分が導風カバー３３Ｌ，３３Ｒでそれぞれ覆われている。各組電池２３…の底面の中央部は、中央フレーム７ａの六角形状の前側および後側の各２辺に相当する部位の中央部にそれぞれ一端部がねじ部材３５により螺着された略二等辺三角形状の支持板３７（図３の（Ａ）図参照）の他端部に支持されている。支持板３７は、本発明の「他の固定部材」を構成する。詳しくは、各組電池２３…の底面の中央部が支持板３７の略二等辺三角形状の頂点に相当する部位に円柱状の弾性部材３９を介して支持され、略二等辺三角形状の底辺の両端部に相当する部位がねじ部材３５により中央フレーム７ａの底面に螺着されている。弾性部材３９は、ゴム部材またはその他の樹脂材からなる部材により構成されている。弾性部材３９は、本発明の「他の弾性部材」を構成する。弾性部材３９による固定構造の詳細については後述する。 Further, most of the surfaces of the left and right assembled batteries 23, 23 disposed on the front side of the vehicle 1 are covered with the wind guide covers 31 </ b> L, 31 </ b> R, respectively, and the left and right assembled batteries disposed on the rear side of the vehicle 1. Most of the surfaces of the batteries 23 and 23 are covered with wind guide covers 33L and 33R, respectively. The central portion of the bottom surface of each assembled battery 23 is substantially isosceles with one end screwed by a screw member 35 to the central portion of the center frame 7a corresponding to the two sides of the hexagonal front and rear sides. It is supported by the other end of a triangular support plate 37 (see FIG. 3A). The support plate 37 constitutes “another fixing member” of the present invention. Specifically, the center portion of the bottom surface of each assembled battery 23 is supported via a cylindrical elastic member 39 at a portion corresponding to the apex of the approximately isosceles triangle shape of the support plate 37, and the bottom of the approximately isosceles triangle shape is supported. Sites corresponding to both end portions are screwed to the bottom surface of the central frame 7 a by screw members 35. The elastic member 39 is configured by a member made of a rubber member or other resin material. The elastic member 39 constitutes “another elastic member” of the present invention. Details of the fixing structure by the elastic member 39 will be described later.
　車両１の前側に配置された左右の導風カバー３１Ｌ，３１Ｒの構造は、車両１の幅方向中心に対して対称になるよう構成され、車両１の後側に配置された左右の導風カバー３３Ｌ，３３Ｒの構造は、車両１の幅方向中心に対して対称になるよう構成されている。説明の都合上、導風カバー３１Ｌ，３３Ｌについて詳細に説明し、導風カバー３１Ｒ，３３Ｒについては説明を省略する。 The structures of the left and right wind guide covers 31L and 31R disposed on the front side of the vehicle 1 are configured to be symmetrical with respect to the center in the width direction of the vehicle 1, and the left and right wind guide covers disposed on the rear side of the vehicle 1. The structures of 33L and 33R are configured to be symmetric with respect to the center of the vehicle 1 in the width direction. For convenience of explanation, the air guide covers 31L and 33L will be described in detail, and the description of the air guide covers 31R and 33R will be omitted.
　図４および図５に示すように、導風カバー３１Ｌは、断面形状がへの字状に屈曲形成された上面部４１と、断面形状が下方に凸状に２か所連続して湾曲形成された下面部４３と、上面部４１と下面部４３とのそれぞれの後縁を繋ぐ後面部４５と、下面部４３の前縁から上面部４１の前縁に向かって中途部まで延設された前面部４７と、上面部４１と下面部４３と後面部４５と前面部４７とで囲まれた両側面を塞ぐ側面部４９Ｔおよびその反対側の側面部４９Ｎ（図２参照）と、導風カバー３１Ｌ内に導入した空気を２箇所から外部へ排出する案内をするための仕切板５１，５３とを備えている。 As shown in FIGS. 4 and 5, the air guide cover 31 </ b> L has an upper surface portion 41 whose cross-sectional shape is bent in a U-shape and a curved cross-sectional shape that is continuously convex at two locations. The lower surface 43, the rear surface 45 connecting the rear edges of the upper surface 41 and the lower surface 43, and the front surface extending from the front edge of the lower surface 43 to the middle of the upper surface 41 toward the front edge. Portion 47, side surface portion 49T that covers both side surfaces surrounded by upper surface portion 41, lower surface portion 43, rear surface portion 45, and front surface portion 47, side surface portion 49N (see FIG. 2) on the opposite side, and wind guide cover 31L. There are provided partition plates 51 and 53 for guiding the air introduced into the inside to be discharged from two places.
　導風カバー３１Ｌの上面部４１の前縁と前面部４７の上縁との間には、外気を導入する開口５５が設けられている。導風カバー３１Ｌの側面部４９Ｔには、３箇所の切欠き部が設けられ、それらの切欠き部から、組電池２３の側面部の一部と、仕切板５１，５３のそれぞれの一部とが外部に露出している。導風カバー３１Ｌの側面部４９Ｎには組電池２３の側面部の一部を外部に露出させるための切欠き部と開口５７（図６参照）とが設けられ、該開口５７には、車両１の前側の衝撃吸収部材２２における前端の開口５９Ｆから導入され車体フレーム７内を通過した外気を導風カバー３１Ｌ内に導入するための吸気ダクト６１が挿入されている。 Between the front edge of the upper surface portion 41 of the wind guide cover 31L and the upper edge of the front surface portion 47, an opening 55 for introducing outside air is provided. The side surface portion 49T of the air guide cover 31L is provided with three notches, and from these notches, a part of the side surface portion of the assembled battery 23 and a part of each of the partition plates 51 and 53 are provided. Is exposed to the outside. The side surface portion 49N of the wind guide cover 31L is provided with a notch portion and an opening 57 (see FIG. 6) for exposing a part of the side surface portion of the assembled battery 23 to the outside. An intake duct 61 for introducing outside air introduced from the front end opening 59F of the front shock absorbing member 22 and passing through the body frame 7 into the air guide cover 31L is inserted.
　導風カバー３１Ｌの上面部４１，下面部４３，後面部４５，前面部４７は、それらの端部に形成された水平方向に長い長円状の長孔に挿通されたねじ部材６５により側面部４９Ｔと締結されている。この長孔に対するねじ部材６５の挿通位置を適宜選定することで、上面部４１等に対する側面部４９Ｔの固定位置を任意に調整して、組電池２３の幅寸法の製造上のばらつきに対応することができる。なお、この長孔は、側面部４９Ｔ側と側面部４９Ｎ側との双方の側に形成してもよいが、何れか一方の側のみに形成するようにしてもよい。 The upper surface portion 41, the lower surface portion 43, the rear surface portion 45, and the front surface portion 47 of the air guide cover 31 </ b> L are side surface portions by screw members 65 inserted through oblong holes that are long in the horizontal direction and formed at the ends thereof. It is fastened with 49T. By appropriately selecting the insertion position of the screw member 65 with respect to the long hole, the fixing position of the side surface portion 49T with respect to the upper surface portion 41 and the like is arbitrarily adjusted to cope with manufacturing variations in the width dimension of the assembled battery 23. Can do. In addition, although this long hole may be formed in both the side part 49T side and the side part 49N side, you may make it form only in any one side.
　図６に示すように、導風カバー３１Ｌの仕切板５１，５３間であって仕切板５３の近傍には水平方向の軸回りに回転する略円柱状のファン６７が配置されており、導風カバー３１Ｌの側面部４９Ｎの外側面に固定された電動モータ６９によってファン６７が回転駆動される。ファン６７の回転軸の、電動モータ６９とは反対側の端部は、側面部４９Ｔに固定された軸受部材（図示せず）に軸方向に摺動可能に軸支され、電動モータ６９と側面部４９Ｔとの距離の製造上のばらつきを吸収できるように構成されている。 As shown in FIG. 6, a substantially cylindrical fan 67 that rotates around a horizontal axis is disposed between the partition plates 51 and 53 of the wind guide cover 31 </ b> L and in the vicinity of the partition plate 53. The fan 67 is rotationally driven by an electric motor 69 fixed to the outer surface of the side surface portion 49N of the cover 31L. The end of the rotating shaft of the fan 67 opposite to the electric motor 69 is supported by a bearing member (not shown) fixed to the side surface portion 49T so as to be slidable in the axial direction. It is configured to be able to absorb manufacturing variations in distance to the portion 49T.
　なお、図６に示すファン６７は、クロスフローファンであるが、これに替えて遠心ファンでもよい。組電池２３内に配置された温度センサ（図示せず）によって組電池２３の温度が計測され、その計測値に基づいて電動モータ６９が回転駆動されファン６７が回転することで組電池２３を冷却するように構成されている。ファン６７が回転すると、衝撃吸収部材２２の開口５９Ｆから導入された外気が車体フレーム７内を通過したのち吸気ダクト６１を介して導風カバー３１Ｌ内に導入される。導風カバー３１Ｌ内に導入された空気により組電池２３が冷却されることで温まった空気が仕切板５１で形成された開口５１ａと仕切板５３および上面部４１で形成された開口５３ａとから外部に排出される。
　なお、開口５１ａと開口５３ａとは、車両１の側部に配設された図示されない排気ダクトに接続されるように構成されてもよい。排気ダクトに接続される場合は、高温の排気がそれより低温の吸気に混入する虞がないため、吸気ダクト６１を廃止して、開口５５から直接、外気を導風カバー３１Ｌ内に導入することができる。 The fan 67 shown in FIG. 6 is a cross flow fan, but may be a centrifugal fan instead. A temperature sensor (not shown) arranged in the assembled battery 23 measures the temperature of the assembled battery 23, and the electric motor 69 is driven to rotate based on the measured value, and the fan 67 rotates to cool the assembled battery 23. Is configured to do. When the fan 67 rotates, the outside air introduced from the opening 59F of the shock absorbing member 22 passes through the body frame 7 and then is introduced into the wind guide cover 31L through the intake duct 61. Air that is heated by cooling the assembled battery 23 by the air introduced into the air guide cover 31L is externally provided from the opening 51a formed by the partition plate 51 and the opening 53a formed by the partition plate 53 and the upper surface portion 41. To be discharged.
The opening 51a and the opening 53a may be configured to be connected to an exhaust duct (not shown) disposed on the side portion of the vehicle 1. When connected to the exhaust duct, there is no possibility that hot exhaust gas will be mixed into the intake air having a lower temperature. Therefore, the intake duct 61 is eliminated and the outside air is directly introduced into the air guide cover 31L from the opening 55. Can do.
　次に、車両１の後側の導風カバー３３Ｌについて説明する。導風カバー３３Ｌの側面部４９Ｎの外側面に固定された電動モータ６９によってファン６７が回転駆動されて外気が車両１の側部に配設された吸気ダクト６８を介して側面部４９Ｎに設けられた開口５７から導入される。導風カバー３３Ｌ内に導入された空気により組電池２３が冷却されることで温まった空気が仕切板５１，５３により案内されて、仕切板５１で形成された開口５１ａと仕切板５３および上面部４１で形成された開口５３ａとから排気ダクト７０を介して車体フレーム７後部の内部に導入される。その後、車体フレーム７の後部に嵌合固定された衝撃吸収部材２２の後端の開口５９Ｒから排出される。 Next, the air guide cover 33L on the rear side of the vehicle 1 will be described. The fan 67 is rotationally driven by the electric motor 69 fixed to the outer side surface of the side surface portion 49N of the air guide cover 33L, and the outside air is provided on the side surface portion 49N via the intake duct 68 disposed on the side portion of the vehicle 1. It is introduced from the opening 57. The air warmed by cooling the battery pack 23 by the air introduced into the air guide cover 33L is guided by the partition plates 51 and 53, and the openings 51a and the partition plate 53 formed by the partition plate 51, and the upper surface portion. 41 is introduced into the rear of the body frame 7 through the exhaust duct 70 from the opening 53 a formed by 41. Thereafter, the air is discharged from the opening 59R at the rear end of the shock absorbing member 22 fitted and fixed to the rear portion of the body frame 7.
　なお、空気の流動抵抗を低減することからすると、吸気ダクト６８と排気ダクト７０とは何れか一方のみ配設するのが望ましい。しかし、高温の排気がそれより低温の吸気に混入しないように排気口と吸気口とを離隔して設けるために導風カバー３３Ｌの両端部に両ダクト６８，７０を配設する場合は、少なくとも何れか一方のダクトの導風カバー３３Ｌへの接続部を柔軟性を有する構造（例えば蛇腹構造）にしておくことが望ましい。そうすることで、組電池２３の幅寸法の製造上のばらつきや車両１の走行時の路面振動による組電池２３の変位を吸収することができる。 Note that it is desirable to dispose only one of the intake duct 68 and the exhaust duct 70 from the viewpoint of reducing the air flow resistance. However, when both the ducts 68 and 70 are disposed at both ends of the air guide cover 33L so as to separate the exhaust port and the intake port so that the high temperature exhaust gas does not enter the lower temperature intake air, at least It is desirable that the connecting portion of either one of the ducts to the wind guide cover 33L has a flexible structure (for example, a bellows structure). By doing so, it is possible to absorb variations in manufacturing of the width dimension of the assembled battery 23 and displacement of the assembled battery 23 due to road surface vibrations when the vehicle 1 is traveling.
　また、図２に示すように、内部に収納された組電池２３を含んだ導風カバー３１Ｌ，３１Ｒ，３３Ｌ，３３Ｒの各重心位置をそれぞれＧ１１，Ｇ１２，Ｇ１３，Ｇ１４とし、車両１の重心位置をＧ２とし、前輪３，３と後輪９，９の各接地位置をそれぞれＰ１，Ｐ２，Ｑ１，Ｑ２とし、重心位置Ｇ２と各接地位置Ｐ１，Ｐ２，Ｑ１，Ｑ２とを結ぶ各仮想直線（線分）をそれぞれＬ１，Ｌ２，Ｍ１，Ｍ２としたとき、乗車領域１３を除く各仮想直線Ｌ１，Ｌ２，Ｍ１，Ｍ２上に各重心位置Ｇ１１，Ｇ１２，Ｇ１３，Ｇ１４がそれぞれ近接するように各導風カバー３１Ｌ，３１Ｒ，３３Ｌ，３３Ｒが位置付けられている。なお、組電池２３を含んだ各導風カバー３１Ｌ，３１Ｒ，３３Ｌ，３３Ｒの重量は、その割合では組電池２３が大部分を占めるので、重心位置Ｇ１１，Ｇ１２，Ｇ１３，Ｇ１４は、組電池２３の重心位置と等価であると言える。 Further, as shown in FIG. 2, the gravity center positions of the air guide covers 31L, 31R, 33L, and 33R including the assembled battery 23 housed inside are respectively G11, G12, G13, and G14, and the gravity center position of the vehicle 1 Is set to G2, the ground contact positions of the front wheels 3, 3 and the rear wheels 9, 9 are respectively P1, P2, Q1, Q2, and the virtual straight lines connecting the gravity center position G2 and the ground contact positions P1, P2, Q1, Q2 ( Line segments) are L1, L2, M1, and M2, respectively, so that the center-of-gravity positions G11, G12, G13, and G14 are close to each other on the virtual straight lines L1, L2, M1, and M2 excluding the boarding area 13. The air guide covers 31L, 31R, 33L, 33R are positioned. Note that the weight of each of the air guide covers 31L, 31R, 33L, and 33R including the assembled battery 23 occupies most of the weight, so that the center-of-gravity positions G11, G12, G13, and G14 correspond to the assembled battery 23. It can be said that it is equivalent to the position of the center of gravity.
　これによって、組電池２３等の重量物が全て乗車領域１３の下方に配置され質量が集中する場合と比べて、乗車領域１３の高さを低くすることができ車両１の乗降性を良好にすることができる上、質量の分散化が図れることで、質量の集中化による車両１の旋回時の過度の俊敏性が回避でき乗り心地が良好になる。また、組電池２３等の重量物は、上述した各位置にそれぞれ弾性部材２７，３９を介して位置付けられ支持されることから、ダイナミックダンパー（制振機構）としても機能し、車両１の走行時の路面振動を好適に抑制することができる。さらに、乗車領域１３から離隔した位置に組電池２３が配設されているので、組電池２３の異常時に組電池２３からガスが発生した場合でも乗車領域１３に該ガスが到達するまでに外気に撹拌され消失する。 This makes it possible to reduce the height of the boarding area 13 and improve the boarding / exiting performance of the vehicle 1 as compared with the case where all heavy objects such as the assembled battery 23 are arranged below the boarding area 13 and the mass is concentrated. In addition, since the mass can be distributed, excessive agility at the time of turning of the vehicle 1 due to the concentration of the mass can be avoided, and the ride comfort is improved. In addition, since heavy objects such as the assembled battery 23 are positioned and supported at the above-described positions via the elastic members 27 and 39, respectively, they function as dynamic dampers (vibration control mechanisms). Can be suitably suppressed. Further, since the assembled battery 23 is disposed at a position separated from the boarding area 13, even if gas is generated from the assembled battery 23 when the assembled battery 23 is abnormal, the battery 23 is exposed to the outside air until the gas reaches the boarding area 13. Stirs and disappears.
　また、図３に示すように、各組電池２３…の両端部が固定された一対の弾性部材２７，２７の中心を通る仮想直線Ｎ１上に重心位置Ｇ１が近接するように、かつ、弾性部材３９の中心を通る仮想直線Ｎ２（鉛直方向の直線）上に重心位置Ｇ１が近接するように導風カバー３１Ｌ，３１Ｒ，３３Ｌ，３３Ｒおよび各組電池２３…が位置付けられている。これによって、車両１の走行時等の路面からの振動に対しても組電池２３等の重量物が安定的に支持される。前記仮想直線Ｎ２は、本発明の「他の仮想直線」を構成する。なお、本実施の形態では、仮想直線Ｎ２の方向を鉛直方向としたが、重心位置Ｇ１に近接し、かつ、仮想直線Ｎ１に直交する方向であれば水平方向または水平方向もしくは鉛直方向に対して傾斜した方向であってもよい。 Further, as shown in FIG. 3, the elastic member is arranged so that the center of gravity G1 is close to the virtual straight line N1 passing through the centers of the pair of elastic members 27, 27 to which both ends of each of the assembled batteries 23 are fixed. The wind guide covers 31L, 31R, 33L, 33R and the assembled batteries 23 are positioned so that the center of gravity G1 is close to a virtual straight line N2 (vertical straight line) passing through the center of 39. As a result, heavy objects such as the assembled battery 23 are stably supported against vibrations from the road surface when the vehicle 1 is traveling. The virtual straight line N2 constitutes “another virtual straight line” in the present invention. In the present embodiment, the direction of the imaginary straight line N2 is the vertical direction. However, if the direction is close to the gravity center position G1 and orthogonal to the imaginary straight line N1, the horizontal direction or the horizontal direction or the vertical direction It may be an inclined direction.
（組電池２３の構成）
　次に、組電池２３の構成について図７ないし図９を参照して説明する。これらの図において、上下方向をＺ方向とし、上方向を方向Ｚ１、下方向を方向Ｚ２とする。Ｚ方向に直交し、かつ、後述する冷却板７１の挟持面７１ａに垂直な方向をＸ方向とし、Ｘ方向のそれぞれの向きに応じて方向Ｘ１、方向Ｘ２とする。Ｚ方向とＸ方向とに直交する方向をＹ方向とし、Ｙ方向のそれぞれの向きに応じて方向Ｙ１と方向Ｙ２とする。 (Configuration of assembled battery 23)
Next, the configuration of the assembled battery 23 will be described with reference to FIGS. In these drawings, the vertical direction is the Z direction, the upward direction is the direction Z1, and the downward direction is the direction Z2. A direction perpendicular to the Z direction and perpendicular to a sandwiching surface 71a of a cooling plate 71 described later is defined as an X direction, and is defined as a direction X1 and a direction X2 according to the respective directions of the X direction. A direction perpendicular to the Z direction and the X direction is defined as a Y direction, and a direction Y1 and a direction Y2 are defined according to the respective directions of the Y direction.
　組電池２３は、Ｘ方向に間隙を隔てて挟持面７１ａ同士が平行になる状態で並設されたアルミニウム合金製の複数の冷却板７１…（本発明の「挟持部材」を構成する。）と、各冷却板７１…間の間隙のそれぞれに配置され冷却板７１で挟持された単電池モジュールと、該単電池モジュールが冷却板７１の挟持面７１ａで挟持された状態でその挟持を保持する保持部材７５とを備える。前記単電池モジュールは、図９に示すように、略直方体状のリチウムイオン電池からなる単電池７７と該単電池７７の外周（冷却板７１の挟持面７１ａで挟持された面を除いた単電池７７の外周）を囲繞するように各冷却板７１…間の間隙のそれぞれに配置されたアルミニウム合金製の間隔調整体７９とを備える。各冷却板７１…で挟持されたときの単電池７７と間隔調整体７９との圧縮剛性は、単電池７７より間隔調整体７９の方が高くなるように構成されている。 The assembled battery 23 includes a plurality of cooling plates 71 made of aluminum alloy arranged in parallel in a state where the sandwiching surfaces 71a are parallel to each other with a gap in the X direction (constituting the “clamping member” of the present invention). , A single battery module disposed in each of the gaps between the cooling plates 71, and held between the cooling plates 71, and holding the holding in a state where the single battery module is held between the holding surfaces 71a of the cooling plate 71 And a member 75. As shown in FIG. 9, the unit cell module includes a unit cell 77 made of a substantially rectangular lithium ion battery and an outer periphery of the unit cell 77 (excluding the surface sandwiched by the sandwiching surface 71a of the cooling plate 71). 77 and an interval adjusting body 79 made of an aluminum alloy disposed in each of the gaps between the cooling plates 71 so as to surround the outer periphery of 77. The compression rigidity of the unit cell 77 and the interval adjusting body 79 when sandwiched between the cooling plates 71 is configured so that the interval adjusting unit 79 is higher than the unit cell 77.
　単電池７７の上面部には、正極端子７７ａおよび負極端子７７ｂと、単電池７７の異常時に発生するガスを所定の圧力を超えたとき弁が開いて排出する排気口７７ｃと、単電池７７内に電解液を注入するための注入孔７７ｄとが設けられている。なお、注入孔７７ｄは、電解液が注入された後、密栓される。各単電池７７…の正極端子７７ａおよび負極端子７７ｂには、Ｓの字状に屈曲形成された導電性のバスバー８０がそれぞれレーザー溶着されている。組電池２３において隣り合う一対の単電池７７，７７のうち一方の単電池７７の正極端子７７ａにレーザー溶着されたバスバー８０と他方の単電池７７の負極端子７７ｂにレーザー溶着されたバスバー８０とは、それらの端部同士が重合され、それら端部に穿設されたボルト孔に挿通されたボルトにより連結され電気的に接続されている。なお、連結される際に下側に位置するバスバー８０の上端部の裏面にはナットが溶着されている。 The upper surface of the unit cell 77 has a positive electrode terminal 77 a and a negative electrode terminal 77 b, an exhaust port 77 c through which a valve is opened and discharged when the gas generated when the unit cell 77 is abnormal exceeds a predetermined pressure, An injection hole 77d for injecting an electrolytic solution is provided. The injection hole 77d is sealed after the electrolyte is injected. Conductive bus bars 80 bent in an S shape are laser welded to the positive terminal 77 a and the negative terminal 77 b of each unit cell 77. The bus bar 80 laser-welded to the positive terminal 77 a of one unit cell 77 and the bus bar 80 laser-welded to the negative terminal 77 b of the other unit cell 77 of the pair of adjacent unit cells 77, 77 in the assembled battery 23. These end portions are overlapped with each other, and are connected and electrically connected by a bolt inserted through a bolt hole formed in the end portions. A nut is welded to the back surface of the upper end portion of the bus bar 80 located on the lower side when connected.
　間隔調整体７９は、それぞれ略矩形枠状の一対の第１間隔調整体片７９ａと第２間隔調整体片７９ｂとを備え、各間隔調整体片７９ａ，７９ｂのＺ方向の寸法は冷却板７１のＺ方向の寸法と略同一に構成されている。第１間隔調整体片７９ａおよび第２間隔調整体片７９ｂは、本発明の「間隔調整体片」を構成する。隣り合う冷却板７１同士の対向する一対の挟持面７１ａ，７１ａのうち一方の挟持面７１ａに当接する第１間隔調整体片７９ａの当接面と、前記一対の挟持面７１ａ，７１ａのうち他方の挟持面７１ａに当接する第２間隔調整体片７９ｂの当接面との間に位置付けられた分割面８１で間隔調整体７９の第１間隔調整体片７９ａと第２間隔調整体片７９ｂとが分割接合されている。分割面８１は、Ｚ方向に平行な面であり、間隔調整体７９の挟持面７１ａへの当接面に対して傾斜している。 The interval adjusting body 79 includes a pair of first interval adjusting body pieces 79a and second interval adjusting body pieces 79b each having a substantially rectangular frame shape, and the size of each of the interval adjusting body pieces 79a and 79b in the Z direction is the cooling plate 71. Are substantially the same as the dimensions in the Z direction. The first interval adjusting body piece 79a and the second interval adjusting body piece 79b constitute the “interval adjusting body piece” of the present invention. An abutment surface of the first interval adjusting body piece 79a that abuts one clamping surface 71a of a pair of opposing clamping surfaces 71a, 71a between adjacent cooling plates 71, and the other of the pair of clamping surfaces 71a, 71a. The first spacing adjustment body piece 79a and the second spacing adjustment body piece 79b of the spacing adjustment body 79 at a dividing surface 81 positioned between the second spacing adjustment body piece 79b and the abutting surface of the second spacing adjustment body piece 79b. Are divided and joined. The dividing surface 81 is a surface parallel to the Z direction, and is inclined with respect to a contact surface of the interval adjusting body 79 with the holding surface 71a.
　各冷却板７１…は、単電池７７で発生した熱が単電池７７と当接して伝播する受熱部として機能する平坦な挟持面７１ａ（本発明の「受熱部」を構成する。）と、挟持面７１ａのＹ方向両側縁に延設され挟持面７１ａに伝播した熱を組電池２３の外部に放出する放熱部７１ｂとを備える。挟持面７１ａの上縁部の方向Ｙ２側には、凹状に切り欠かれた矩形状切欠部８２ａが形成されている。挟持面７１ａは、Ｙ方向の寸法が間隔調整体７９よりやや大きく形成され、挟持面７１ａの内部には、空気が通過できる複数の通気孔８２ｂ…がＺ方向に穿設されている。各通気孔８２ｂ…の横断面は略矩形状に形成されている。 Each cooling plate 71... Is sandwiched between a flat clamping surface 71a (which constitutes the “heat receiving part” of the present invention) that functions as a heat receiving part through which heat generated by the single battery 77 abuts on the single battery 77 and propagates. A heat dissipating part 71b extending to both side edges in the Y direction of the surface 71a and releasing heat transmitted to the holding surface 71a to the outside of the assembled battery 23; On the side of the upper edge portion of the clamping surface 71a in the direction Y2, a rectangular cut portion 82a that is cut into a concave shape is formed. The clamping surface 71a is formed to have a dimension in the Y direction slightly larger than the distance adjusting body 79, and a plurality of vent holes 82b through which air can pass are formed in the Z direction inside the clamping surface 71a. Each of the vent holes 82b has a substantially rectangular cross section.
　放熱部７１ｂは、間隔調整体７９のＹ方向両端の外周より外方に延設され、Ｙ方向およびＺ方向に平行で、かつ、Ｚ方向に長い放熱面を有する複数のフィン８３…が形成されている。挟持面７１ａの内部に穿設された通気孔８２ｂ…内と複数のフィン８３…間とを空気が通過することで冷却板７１全体が均一に冷却される。ここで、上述した導風カバー３３Ｌ内の空気の流れを、組電池２３の通気孔８２ｂ…およびフィン８３…を含めて詳細に説明する。開口５５，５７から導風カバー３３Ｌ内に導入された外気は、ファン６７の回転による送風とファン６７を囲むように配置された仕切板５１，５３による案内とによって各冷却板７１…の通気孔８２ｂ…上部に向かって送られたのち各通気孔８２ｂ…内を下方に向かって通過する。その後、導風カバー３３Ｌの下面部４３の湾曲に沿って導風カバー３３Ｌの後面部４５側と前面部４７側とに分岐案内された空気は、各冷却板７１…の両側部のフィン８３…下部に向かって送られたのち各フィン８３…間を上方に向かって通過する。各フィン８３…間を通過した空気は、仕切板５１，５３等によって案内されて開口５１ａ，５３ａから導風カバー３３Ｌ外に排気される。 The heat dissipating part 71b is extended outward from the outer periphery of both ends in the Y direction of the interval adjusting body 79, and a plurality of fins 83 are formed that have a heat dissipating surface parallel to the Y direction and the Z direction and long in the Z direction. ing. The entire cooling plate 71 is uniformly cooled as air passes through the inside of the air holes 82b formed in the holding surface 71a and between the plurality of fins 83. Here, the flow of air in the air guide cover 33L described above will be described in detail including the vent holes 82b and fins 83 of the assembled battery 23. The outside air introduced into the air guide cover 33 </ b> L from the openings 55 and 57 is vented to the cooling plates 71 by air blown by the rotation of the fan 67 and guidance by the partition plates 51 and 53 arranged so as to surround the fan 67. 82b... Are sent toward the upper part and then pass downward through the air holes 82b. Thereafter, the air branched and guided to the rear surface 45 side and the front surface 47 side of the air guide cover 33L along the curvature of the lower surface portion 43 of the air guide cover 33L, the fins 83 on both sides of each cooling plate 71. After being sent toward the lower part, it passes between the fins 83. The air that has passed between the fins 83 is guided by the partition plates 51, 53, etc., and is exhausted out of the air guide cover 33L through the openings 51a, 53a.
　冷却板７１は、後述する保持部材７５のボルト８７が挿通される貫通孔および矩形状切欠部８２ａを除き、挟持面７１ａの内部の通気孔８２ｂ…および放熱部７１ｂのフィン８３…を含めて素材の製造段階ではＺ方向の押し出し成型により製造されている。各フィン８３…が薄肉に形成されていることにより放熱部７１ｂは、挟持面７１ａより衝撃強度が低くなっている。また、放熱部７１ｂのＸ方向幅寸法Ｔ１は、挟持面７１ａのＸ方向幅寸法Ｔ２より大きく、該幅寸法Ｔ２と間隔調整体７９のＸ方向幅寸法Ｔ３とを合わせたＸ方向幅寸法（Ｔ２＋Ｔ３）より小さく設定されている。これによって、放熱部７１ｂのＸ方向幅寸法Ｔ１が可及的大きく設定され、放熱部７１ｂのフィン８３…によって効果的に放熱される。 The cooling plate 71 is made of a material including a ventilation hole 82b in the holding surface 71a and a fin 83 in the heat radiating portion 71b except for a through hole into which a bolt 87 of the holding member 75 described later is inserted and a rectangular cutout portion 82a. In this manufacturing stage, it is manufactured by extrusion molding in the Z direction. Since the fins 83 are formed thin, the heat radiation portion 71b has a lower impact strength than the clamping surface 71a. Further, the X-direction width dimension T1 of the heat radiating portion 71b is larger than the X-direction width dimension T2 of the sandwiching surface 71a, and the X-direction width dimension (T2 + T3) is the sum of the width dimension T2 and the X-direction width dimension T3 of the spacing adjuster 79. ) Is set smaller. Thus, the X-direction width dimension T1 of the heat radiating portion 71b is set as large as possible, and the heat is effectively radiated by the fins 83 of the heat radiating portion 71b.
　保持部材７５は、複数の冷却板７１…のうち最も外側に位置するＸ方向両端の冷却板７１，７１の外側面にそれぞれ当接された略矩形状の一対の端板８５，８５と、これらの端板８５，８５に穿設された複数の貫通孔にそれぞれ挿通された長尺の横断面円形状のボルト８７と、これらのボルト８７に螺合されるナット８９とを備える。一対の端板８５，８５、ボルト８７およびナット８９は、本発明の「保持部材」を構成する。ボルト８７とナット８９とで締結されることで、複数の冷却板７１…間にそれぞれ介在された単電池７７と間隔調整体７９とを各冷却板７１…で挟持した状態でその挟持が保持される。
　また、一対の端板８５，８５の中央部には、一端部に雄ねじが刻設されたボルト８５ａの他端部が固着されており、これらのボルト８５ａは、方向Ｘ１，Ｘ２に沿う方向にそれぞれ延びている。 The holding member 75 includes a pair of substantially rectangular end plates 85 and 85 which are in contact with the outer surfaces of the cooling plates 71 and 71 located at the outermost ends of the plurality of cooling plates 71. Long end circular bolts 87 inserted into a plurality of through holes formed in the end plates 85, 85, and nuts 89 screwed into these bolts 87. The pair of end plates 85, 85, bolts 87, and nuts 89 constitute the “holding member” of the present invention. By being fastened by the bolts 87 and nuts 89, the unit cells 77 and the spacing adjusters 79 interposed between the plurality of cooling plates 71 are respectively held between the cooling plates 71. The
In addition, the other end of a bolt 85a having a male screw engraved at one end is fixed to the central portion of the pair of end plates 85, 85, and these bolts 85a extend in directions along the directions X1 and X2. Each extends.
　各端板８５，８５の外側面には、複数の部位を六角形状に窪ませて凹部８５ｂ…が形成され、その分、材料の節約および軽量化を図っている。端板８５に穿設された複数の貫通孔のうち４個は、端板８５の略矩形状の四隅に相当する部位に穿設され、残りの２個は、端板８５の略矩形状の上辺と下辺のそれぞれの中間に相当する部位にそれぞれ形成された突出部８５ｃに穿設されている。各単電池７７…および各間隔調整体７９…の各冷却板７１…による挟持を保持部材７５により保持している状態において、端板８５の四隅に穿設された前記４個の貫通孔に対応する、各冷却板７１…および各間隔調整体７９…のそれぞれの部位に貫通孔が穿設されている。これによって、端板８５の四隅に穿設された前記４個の貫通孔に挿通された４本のボルト８７は、一対の端板８５，８５の貫通孔に加え、各冷却板７１…と各間隔調整体７９…との貫通孔にも挿通される。 A plurality of portions are recessed in a hexagonal shape on the outer surface of each end plate 85, 85 to form recesses 85b, thereby saving material and reducing the weight. Four of the plurality of through holes drilled in the end plate 85 are drilled in portions corresponding to the substantially rectangular four corners of the end plate 85, and the remaining two are formed in a substantially rectangular shape of the end plate 85. The protrusions 85c are formed at portions corresponding to the middle of the upper side and the lower side. Corresponding to the four through holes drilled at the four corners of the end plate 85 in a state where the holding members 75 hold the single cells 77 and the gap adjusting bodies 79 by the cooling plates 71. The through holes are formed in the respective portions of the cooling plates 71 and the interval adjusting bodies 79. As a result, the four bolts 87 inserted through the four through holes drilled in the four corners of the end plate 85 are connected to the cooling plates 71. It is also inserted into a through hole with the interval adjusting body 79.
　一方、端板８５の突出部８５ｃに穿設された２個の貫通孔に挿通された２本のボルト８７は、各冷却板７１…および各間隔調整体７９…の上方および下方にそれぞれ近接して配置されている。これらの２本のボルト８７は、端板８５の四隅の貫通孔に挿通された前記４本のボルト８７とは挿通方向が逆向きになってるが、全て同一の挿通方向であってもよい。また、前記６本のボルト８７は、一端部に雄ねじが刻設され他端部に六角形状の頭部が一体形成されたボルトを使用したが、これに替えて両端部とも雄ねじが刻設されたボルトを使用してもよい。なお、図８および図９では、作図の都合上、ボルト８７を適宜切断して図示している。 On the other hand, the two bolts 87 inserted through the two through holes formed in the projecting portion 85c of the end plate 85 are close to the upper and lower sides of the cooling plates 71 and the interval adjusting bodies 79, respectively. Are arranged. These two bolts 87 are inserted in the opposite direction to the four bolts 87 inserted through the through-holes at the four corners of the end plate 85, but may all be the same insertion direction. Further, the six bolts 87 use a bolt in which a male screw is engraved at one end and a hexagonal head is integrally formed at the other end. Instead, a male screw is engraved at both ends. Bolts may be used. In FIG. 8 and FIG. 9, the bolts 87 are appropriately cut for illustration purposes.
　各冷却板７１…に穿設された前記貫通孔は、その直径がボルト８７の外径と略等しい円形状に形成されており、各間隔調整体７９…に穿設された前記貫通孔は、ボルト８７がＹ方向に相対移動できるようにＹ方向に長い長円状の長孔９０ａに形成されている。なお、本実施の形態では、間隔調整体７９の長孔９０ａは、間隔調整体７９を構成する第１間隔調整体片７９ａと第２間隔調整体片７９ｂの双方の間隔調整体片の貫通孔をそれぞれ同様の長円状の長孔に形成している。また、第１間隔調整体片７９ａにおける方向Ｙ２側のＺ方向中間部と第２間隔調整体片７９ｂにおける方向Ｙ１側のＺ方向中間部とには、接着剤を注入するための注入孔９０ｂがＸ方向にそれぞれ穿設されている。第２間隔調整体片７９ｂ上部における中央よりやや方向Ｙ２側には、単電池７７の温度を計測するために単電池７７内に配設された温度センサ（図示せず）に接続される電線や単電池７７の電圧を計測するための電線を取り出すための開口として貫通孔９０ｃが穿設されている（図９参照）。 The through holes drilled in the respective cooling plates 71 are formed in a circular shape whose diameter is substantially equal to the outer diameter of the bolt 87, and the through holes drilled in the respective spacing adjusting bodies 79 are Bolts 87 are formed in oblong elongated holes 90a that are long in the Y direction so that they can move relative to each other in the Y direction. In the present embodiment, the long hole 90a of the interval adjusting body 79 is a through hole of the interval adjusting body piece 79a and the second interval adjusting body piece 79b constituting the interval adjusting body 79. Are formed in the same oblong slot. Further, an injection hole 90b for injecting an adhesive is formed in the Z direction intermediate portion on the direction Y2 side in the first interval adjusting body piece 79a and the Z direction intermediate portion on the direction Y1 side in the second interval adjusting body piece 79b. Each is drilled in the X direction. An electric wire connected to a temperature sensor (not shown) disposed in the unit cell 77 in order to measure the temperature of the unit cell 77 slightly to the direction Y2 side from the center in the upper part of the second interval adjusting body piece 79b A through hole 90c is formed as an opening for taking out an electric wire for measuring the voltage of the unit cell 77 (see FIG. 9).
　第１間隔調整体片７９ａと第２間隔調整体片７９ｂとのそれぞれの上部におけるＹ方向中間部には、凹状に切り欠かれた矩形状切欠部９１ａがそれぞれ形成されている。矩形状切欠部９１ａは、両間隔調整体片７９ａ，７９ｂの接合時に、それぞれの接合面に略一致した位置に位置付けられるよう形成されている。また、両間隔調整体片７９ａ，７９ｂのそれぞれの上部（方向Ｚ１側）および下部（方向Ｚ２側）における内周面のＹ方向中間部には、円弧状切欠部９１ｂがそれぞれ形成されている。円弧状切欠部９１ｂは、両間隔調整体片７９ａ，７９ｂの接合時に略一致した位置に位置付けられるよう形成されている。 A rectangular cutout 91a that is cut out in a concave shape is formed at each intermediate portion in the Y direction at the top of each of the first gap adjustment piece 79a and the second gap adjustment piece 79b. The rectangular cutout portion 91a is formed so as to be positioned at a position substantially coinciding with the respective joint surfaces when the gap adjusting body pieces 79a and 79b are joined. In addition, arc-shaped notches 91b are formed at intermediate portions in the Y direction of the inner peripheral surfaces of the upper portions (direction Z1 side) and the lower portions (direction Z2 side) of the gap adjusting body pieces 79a and 79b, respectively. The arcuate notch 91b is formed so as to be positioned at a substantially coincident position when the two spacing adjusting body pieces 79a and 79b are joined.
　矩形状切欠部９１ａは、単電池７７の異常時に単電池７７の排気口７７ｃから排出されたガスを排出するための排気口として機能する。円弧状切欠部９１ｂは、バスバー８０がレーザー溶着された状態の単電池７７を間隔調整体７９から取り外す際、間隔調整体７９の内周面に単電池７７が干渉することなく間隔調整体７９に対して単電池７７を回動させその姿勢を変化させて取り外すことができる形状に切り欠かれている。該円弧状切欠部９１ｂは、組電池２３中の一部の単電池７７が不良となった場合に、その単電池７７だけを取り外すとき等に利用される。 The rectangular cutout portion 91a functions as an exhaust port for discharging the gas discharged from the exhaust port 77c of the unit cell 77 when the unit cell 77 is abnormal. When the unit cell 77 with the bus bar 80 laser-welded is removed from the interval adjuster 79, the arc-shaped notch 91 b does not interfere with the inner surface of the interval adjuster 79 without interfering with the interval adjuster 79. On the other hand, the unit cell 77 is turned into a shape that can be removed by rotating and changing its posture. The arcuate notch 91b is used when only a single cell 77 is removed when some of the single cells 77 in the battery pack 23 become defective.
　また、第１間隔調整体片７９ａ上部の方向Ｙ１側および第２間隔調整体片７９ｂ上部の方向Ｙ２側には、凹状に切り欠かれた矩形状切欠部９１ｃがそれぞれ形成されている。組電池２３において冷却板７１を挟んで隣り合う一対の単電池７７，７７に電気的に接続された一対のバスバー８０，８０は、第１間隔調整体片７９ａおよび第２間隔調整体片７９ｂの各矩形状切欠部９１ｃと、これらの間隔調整体片７９ａ，７９ｂ間の冷却板７１の矩形状切欠部８２ａとで形成された収容部に収容され、間隔調整体７９と冷却板７１との上縁から大きく食み出さないように構成されている。第１間隔調整体片７９ａと第２間隔調整体片７９ｂとは、貫通孔９０ｃを除き同一の形状に形成されており、素材の製造段階ではＸ方向の押し出し成型により製造される。 In addition, a rectangular cutout 91c that is cut out in a concave shape is formed on the direction Y1 side above the first interval adjusting body piece 79a and on the direction Y2 side above the second interval adjusting body piece 79b. A pair of bus bars 80, 80 electrically connected to a pair of adjacent single cells 77, 77 across the cooling plate 71 in the assembled battery 23 are formed of the first interval adjusting piece 79a and the second interval adjusting piece 79b. The rectangular cutout portions 91c and the rectangular cutout portions 82a of the cooling plate 71 between the interval adjusting body pieces 79a and 79b are accommodated in an accommodating portion. It is configured not to protrude significantly from the edge. The first interval adjusting body piece 79a and the second interval adjusting body piece 79b are formed in the same shape except for the through-hole 90c, and are manufactured by extrusion molding in the X direction at the material manufacturing stage.
＜組電池２３の組み立て手順＞
　次に、組電池２３の組み立て手順（本発明の「組電池の製造方法」を構成する。）について、図１０ないし図１３を参照して説明する。なお、下記のステップＳ１ないしＳ１２とフローＦ１ないしＦ４とは、それぞれ図１０と図１１とに示したものである。
　まず、希望する電源容量分の個数以上の単電池７７と、希望する電源容量分の単電池７７の個数と同じ個数の間隔調整体７９（第１間隔調整体片７９ａおよび第２間隔調整体片７９ｂ）と、その個数より1つ多い個数の冷却板７１と、保持部材７５と、複数のバスバー８０等を準備する（ステップＳ１，Ｓ２，Ｓ３，Ｓ４）。 <Assembly procedure of assembled battery 23>
Next, the procedure for assembling the assembled battery 23 (which constitutes “the assembled battery manufacturing method” of the present invention) will be described with reference to FIGS. 10 to 13. The following steps S1 to S12 and flows F1 to F4 are those shown in FIGS. 10 and 11, respectively.
First, the number of unit cells 77 equal to or greater than the number of desired power supply capacities and the same number of interval adjusters 79 as the number of unit cells 77 corresponding to the desired power source capacity (first interval adjuster piece 79a and second interval adjuster piece) 79b), a number of cooling plates 71, one holding member 75, and a plurality of bus bars 80, which are one more than the number, are prepared (steps S1, S2, S3, S4).
　次に、ステップＳ１で準備した複数の単電池７７のエージングを行う（ステップＳ５）。この場合のエージングとは、予め設定された環境温度下で単電池に予め設定された容量の充電（満充電を含む。）を行うことである。
　次に、ステップＳ５でエージングを行った各単電池７７…の性能の検査を行う（ステップＳ６）。この場合の検査とは、予め設定された環境温度下で各単電池７７…の放電特性および充電時の電圧や充電容量が適正か否か等の検査や外観の検査を行うことである。検査の結果、不適と判定された単電池７７は廃棄される。 Next, aging of the plurality of single cells 77 prepared in step S1 is performed (step S5). The aging in this case is to perform charging (including full charge) of a preset capacity to a single cell under a preset environmental temperature.
Next, the performance of each of the single cells 77 that has been aged in step S5 is inspected (step S6). In this case, the inspection is to perform an inspection such as whether or not the discharge characteristics, the voltage and the charging capacity at the time of charging are appropriate, and an appearance inspection at a preset environmental temperature. As a result of the inspection, the unit cell 77 determined to be unsuitable is discarded.
　次に、ステップＳ６で検査した各単電池７７…を、予め設定された充電状態（満充電を含む。）で、かつ、予め設定された環境温度下で、冷却板７１の挟持面７１ａで挟持される単電池７７の面を予め設定された圧縮荷重で計測装置１０１の挟持部により挟持する。そのときの厚さを計測装置１０１で計測して記憶装置１０３に記憶する（ステップＳ７、フローＦ１参照）。そのときの厚さの計測値は、図１２の（ａ）図に示すｔ０となる。単電池７７の厚さは、２箇所以上の部位（例えば両端部）を計測して、それらの計測値の平均値または最小値を単電池７７の厚さとしてもよい。計測装置１０１で計測したときの厚さが、予め設定された単電池用の上限閾値と下限閾値との間に入らないため不適と判定された単電池７７は廃棄される。なお、ステップＳ６の検査とステップＳ７の計測とは、実施する順番を入れ替えてもよい。 Next, each single cell 77... Inspected in step S6 is clamped by the clamping surface 71a of the cooling plate 71 in a preset charging state (including full charge) and at a preset environmental temperature. The surface of the unit cell 77 is clamped by the clamping unit of the measuring apparatus 101 with a preset compressive load. The thickness at that time is measured by the measuring device 101 and stored in the storage device 103 (see step S7, flow F1). Measurement of the thickness of the case is t 0 shown in (a) of FIG. 12. The thickness of the unit cell 77 may be measured at two or more sites (for example, both ends), and the average value or the minimum value of the measured values may be the thickness of the unit cell 77. Since the thickness measured by the measuring device 101 does not fall between the preset upper limit threshold and lower limit threshold for the unit cell, the unit cell 77 determined to be inappropriate is discarded. Note that the order in which the inspection in step S6 and the measurement in step S7 are performed may be interchanged.
　次に、ステップＳ２で準備した複数の間隔調整体７９のうち任意に選んだ一対の第１間隔調整体片７９ａと第２間隔調整体片７９ｂとの傾斜面同士を当接させ計測装置１０４のサーボモータを作動させて一定の圧縮荷重を付与した状態で、これら両間隔調整体片７９ａ，７９ｂを分割面８１の傾斜する方向に沿って、計測装置１０４のサーボモータを作動させて相対的に変位させながら、これら両間隔調整体片７９ａ，７９ｂの全厚さを計測装置１０４により計測する。そのときの計測値が、先に計測した単電池７７のうち任意に選んだ１つの単電池７７の厚さ計測値に基づいて設定された間隔調整体用の上限閾値と下限閾値との間に入るように両間隔調整体片７９ａ，７９ｂの相対位置を特定する（ステップＳ８、フローＦ２参照）。図１２の（ｂ）ないし（ｄ）図においては、（ｂ）図に示す両間隔調整体片７９ａ，７９ｂの相対位置の場合が両間隔調整体片７９ａ，７９ｂの全厚さが最も大きい値（ｔ１＋ｓ）となり、（ｄ）図に示す場合が全厚さが最も小さい値（ｔ１－ｓ）となり、（ｃ）図に示す場合がそれらの中間の値（ｔ１）となる。 Next, the inclined surfaces of the pair of first interval adjusting body pieces 79a and second interval adjusting body pieces 79b arbitrarily selected from the plurality of interval adjusting bodies 79 prepared in step S2 are brought into contact with each other. In a state where a constant compression load is applied by operating the servo motor, the distance adjusting body pieces 79a and 79b are relatively moved by operating the servo motor of the measuring device 104 along the direction in which the dividing surface 81 is inclined. While being displaced, the measuring device 104 measures the total thickness of both the distance adjusting body pieces 79a and 79b. The measured value at that time is between an upper limit threshold value and a lower limit threshold value for the interval adjuster set based on the thickness measured value of one single cell 77 arbitrarily selected from the previously measured unit cells 77. The relative positions of the two spacing adjusting body pieces 79a and 79b are specified so as to enter (see step S8, flow F2). 12 (b) to 12 (d), the total thickness of both spacing adjusting body pieces 79a and 79b is the largest value in the case of the relative positions of both spacing adjusting body pieces 79a and 79b shown in FIG. 12 (b). (T 1 + s). In the case shown in (d), the total thickness is the smallest value (t 1 -s). In the case shown in (c), the intermediate value (t 1 ) is obtained.
　前記間隔調整体用の上限閾値および下限閾値は、それらの値の範囲内に入るように、任意に選んだ前記単電池７７を圧縮して保持すれば該単電池７７の劣化を低減することができる値で、実験により求めた値である。前記間隔調整体用の上限閾値および下限閾値のうち上限閾値は単電池７７の満充電時の厚さに相当する厚さの値（ステップＳ７で計測した厚さに基づいて算出した値）より小さな値に設定しており、下限閾値はその値の厚さになるまで単電池７７を圧縮したときの圧縮力が単電池７７の圧縮強度を超えないような値に設定している。任意に選んだ前記単電池７７と相対位置を特定した両間隔調整体片７９ａ，７９ｂとを１つの単電池モジュールを構成する部材として関連付けて保管する。 The upper limit threshold and the lower limit threshold for the interval adjuster can reduce deterioration of the unit cell 77 by compressing and holding the unit cell 77 arbitrarily selected so as to fall within the range of those values. It is a value that can be obtained by experiments. Of the upper limit threshold and the lower limit threshold for the interval adjuster, the upper limit threshold is smaller than the thickness value corresponding to the thickness of the unit cell 77 when fully charged (the value calculated based on the thickness measured in step S7). The lower limit threshold is set to a value such that the compression force when the unit cell 77 is compressed until the thickness reaches that value does not exceed the compression strength of the unit cell 77. The unit cell 77 arbitrarily selected and the both-interval adjusting body pieces 79a and 79b whose relative positions are specified are stored in association with each other as members constituting one unit cell module.
　次に、ステップＳ８で特定した両間隔調整体片７９ａ，７９ｂの相対位置で両間隔調整体片７９ａ，７９ｂを保持した状態で両間隔調整体片７９ａ，７９ｂの各注入孔９０ｂに接着剤を注入装置１０５により注入し、該接着剤により両間隔調整体片７９ａ，７９ｂを仮固定する（ステップＳ９、フローＦ３参照）。
　次に、ステップＳ３で準備した複数の冷却板７１のうち任意に選んだ１つの冷却板７１を水平に保持し、その冷却板７１の挟持面７１ａ上に、ステップＳ９で両間隔調整体片７９ａ，７９ｂを仮固定してなる間隔調整体７９を載置すると共に、その間隔調整体７９の内周側に臨む挟持面７１ａ上に、ステップＳ７で厚さを計測した単電池７７であって両間隔調整体片７９ａ，７９ｂと１つの単電池モジュールを構成する部材として関連付けた単電池７７を載置する（ステップＳ１０、フローＦ４参照）。冷却板７１の挟持面７１ａ上での間隔調整体７９と単電池７７との位置決めは治具によって行われる。 Next, an adhesive is applied to the injection holes 90b of the both-space adjusting body pieces 79a, 79b in a state where the both-space adjusting body pieces 79a, 79b are held at the relative positions of the both-space adjusting body pieces 79a, 79b specified in step S8. It inject | pours with the injection | pouring apparatus 105, and both space | interval adjustment body piece 79a, 79b is temporarily fixed with this adhesive agent (refer step S9, flow F3).
Next, one arbitrarily selected cooling plate 71 among the plurality of cooling plates 71 prepared in step S3 is held horizontally, and on the clamping surface 71a of the cooling plate 71, in step S9, the both-space adjusting body piece 79a. 79b are temporarily fixed, and a cell 77 having a thickness measured in step S7 on the sandwiching surface 71a facing the inner peripheral side of the space adjusting body 79. The cell 77 associated with the interval adjusting body pieces 79a, 79b as a member constituting one cell module is placed (see step S10, flow F4). Positioning of the gap adjusting body 79 and the unit cell 77 on the clamping surface 71a of the cooling plate 71 is performed by a jig.
　次に、間隔調整体７９と単電池７７とを冷却板７１に載置したステップＳ１０の状態を治具によって保持したまま間隔調整体７９の内周面と単電池７７の外周面との間隙に緩衝剤１０７を充填装置１０９により充填して冷却板７１と間隔調整体７９と単電池７７とを一体化して結合体を製作する（ステップＳ１１、図１３参照）。このとき充填する緩衝剤としては、エポキシ系樹脂等の緩衝剤が挙げられる。緩衝剤は、硬化した後も、ある程度の柔軟性は残存する。
　次に、ステップ５からステップ１１までのステップを、ステップＳ１で準備した全ての単電池７７について終了するまで行ったのち、ステップ１１で一体化した冷却板７１等の全ての結合体を間隔調整体７９および単電池７７と冷却板７１とが交互になるよう積層する。 Next, the gap between the inner peripheral surface of the gap adjusting body 79 and the outer peripheral face of the single battery 77 is maintained while the state of step S10 in which the gap adjusting body 79 and the single battery 77 are placed on the cooling plate 71 is held by a jig. The buffer 107 is filled with the filling device 109, and the cooling plate 71, the interval adjusting body 79, and the unit cell 77 are integrated to produce a combined body (step S11, see FIG. 13). Examples of the buffering agent filled at this time include a buffering agent such as an epoxy resin. The buffer remains flexible to some extent after it is cured.
Next, after the steps from Step 5 to Step 11 are completed for all the unit cells 77 prepared in Step S1, all the joined bodies such as the cooling plate 71 integrated in Step 11 are replaced with the interval adjusting bodies. 79 and unit cells 77 and cooling plates 71 are stacked alternately.
　このとき、単電池７７の表面層がステンレス製またはアルミニウム合金製の場合は、アルミニウム合金製の冷却板７１を介して単電池７７同士が互いに電気的に導通しないよう絶縁するために、積層する前記結合体同士のうち一方の冷却板７１と他方の単電池７７との当接面の間に熱伝導性のよい絶縁シートを介在させておく。なお、該絶縁シートに替えて当接面の間に絶縁性グリスを均一な厚さに塗布してもよい。また、単電池７７の表面層がアルミニウム合金製の場合は、絶縁シートに替えて陽極酸化被膜により絶縁するようにしてもよい。また、単電池７７の表面層が絶縁性樹脂の場合は、前記絶縁シートや絶縁性グリスは省略することができる。 At this time, when the surface layer of the unit cell 77 is made of stainless steel or aluminum alloy, the unit cells 77 are stacked in order to insulate the unit cells 77 from being electrically connected to each other via the aluminum alloy cooling plate 71. An insulating sheet having good thermal conductivity is interposed between the contact surfaces of one cooling plate 71 and the other unit cell 77 among the joined bodies. Instead of the insulating sheet, insulating grease may be applied between the contact surfaces in a uniform thickness. Further, when the surface layer of the unit cell 77 is made of an aluminum alloy, it may be insulated with an anodized film instead of the insulating sheet. Further, when the surface layer of the unit cell 77 is an insulating resin, the insulating sheet and the insulating grease can be omitted.
　次に、積層した前記結合体を、ステップ４で準備した保持部材７５（一対の端板８５，８５、ボルト８７、ナット８９）により締結して挟持する（ステップＳ１２）。ボルト８７に対するナット８９の締め付けトルクは、単電池７７の劣化を低減することができる圧縮力を付与できる所定のトルクで、実験により予め求めておいたトルクである。
　次に、一対のバスバー８０，８０の一端部同士を重合してボルトにより予め連結し、一体となったバスバー対の各他端部をレーザー溶着装置により各単電池７７…の正極端子７７ａおよび負極端子７７ｂにそれぞれレーザー溶着する。
　以上で、組電池２３の組み立てを終了し、図７に示す組電池２３が完成する。完成した組電池２３は、組電池としての性能が適正か否かの確認検査が行われ、検査の結果、不適と判定された組電池２３は原因を特定して再調整または廃棄される。 Next, the laminated assembly is fastened and clamped by the holding member 75 (a pair of end plates 85, 85, bolts 87, and nuts 89) prepared in Step 4 (Step S12). The tightening torque of the nut 89 with respect to the bolt 87 is a predetermined torque that can give a compressive force that can reduce the deterioration of the unit cell 77, and is a torque that has been obtained in advance by experiments.
Next, one end portions of the pair of bus bars 80, 80 are superposed and connected in advance by bolts, and the other end portions of the integrated bus bar pair are connected to each other by a laser welding device. Laser welding is performed on the terminals 77b.
Thus, the assembly of the assembled battery 23 is finished, and the assembled battery 23 shown in FIG. 7 is completed. The completed assembled battery 23 is subjected to a confirmation inspection as to whether or not the performance as the assembled battery is appropriate, and as a result of the inspection, the assembled battery 23 determined to be inappropriate is identified and re-adjusted or discarded.
＜単電池７７の保守方法＞
　次に、組電池２３の保守方法について説明する。
　まず、使用中の組電池２３または保守対象の組電池２３について、組電池２３内の複数のセンサーで検出された温度，電圧および充放電状態を監視し、組電池２３内の劣化または故障している単電池７７を特定する。
　単電池７７の劣化または故障が特定された場合は、次の手順により単電池モジュール単位（単電池７７および間隔調整体７９）で新しいものに交換される。
　劣化または故障が特定された不良の単電池モジュールとその隣の単電池モジュールとの単電池７７同士を連結するバスバー対のボルトを外し、さらに保持部材７５のボルト８７…を外すことにより、不良の単電池モジュールだけを組電池２３から取り外すことができる。 <Maintenance method for single cell 77>
Next, a maintenance method for the assembled battery 23 will be described.
First, with respect to the assembled battery 23 in use or the maintenance target assembled battery 23, the temperature, voltage, and charge / discharge state detected by a plurality of sensors in the assembled battery 23 are monitored, and the assembled battery 23 has deteriorated or failed. The unit cell 77 is specified.
When the deterioration or failure of the unit cell 77 is specified, the unit cell unit (unit cell 77 and interval adjusting body 79) is replaced with a new unit by the following procedure.
By removing the bolts of the bus bar pair that connect the unit cells 77 of the defective unit cell module for which deterioration or failure is specified and the adjacent unit cell module, and further removing the bolts 87 of the holding member 75, Only the single battery module can be removed from the assembled battery 23.
　なお、取り外した不良の単電池モジュールは、間隔調整体７９と単電池７７との間に部分的に充填された緩衝剤１０７を剥離した後、単電池７７を間隔調整体７９に対し、Ｚ方向の軸回りに回動させた後、さらにＸ方向の軸回りに回動させて間隔調整体７９から離脱させる。この際、間隔調整体７９の円弧状切欠部９１ｂにより、バスバー８０が溶着された状態でも、間隔調整体７９の内周面に単電池７７が干渉することなく単電池７７を取り外すことができる。この結果、単電池７７を破壊して内部の電解質を放出することなく、安全に単電池７７と間隔調整体７９を分離することができる。なお、分離された間隔調整体７９および単電池７７は、適宜の方法で安全にリサイクルされる。 In the removed defective cell module, after the buffer agent 107 partially filled between the space adjuster 79 and the cell 77 is peeled off, the cell 77 is moved with respect to the space adjuster 79 in the Z direction. Then, it is further rotated about the axis in the X direction to be detached from the interval adjusting body 79. At this time, even when the bus bar 80 is welded by the arc-shaped notch 91 b of the interval adjusting body 79, the single cell 77 can be removed without interfering with the inner peripheral surface of the interval adjusting body 79. As a result, it is possible to safely separate the unit cell 77 and the interval adjuster 79 without destroying the unit cell 77 and releasing the internal electrolyte. The separated interval adjusting body 79 and the single battery 77 are safely recycled by an appropriate method.
　次に、新しい単電池７７と該単電池７７の厚さに対応して厚さ調整された間隔調整体７９とからなる新しい単電池モジュールが用意される。この新しい単電池モジュールには、各単電池７７の正極端子７７ａおよび負極端子７７ｂにそれぞれバスバー８０の端部が単電池７７の端面を基準として位置決めされた位置にレーザー溶着されている。
　次に、不良の電池モジュールが取り付けられていた組電池２３の位置に新しい単電池モジュールを位置させ、保持部材であるボルトを貫通させて適宜な圧縮力で組電池２３を組み付け、最後にバスバー８０の端部同士をボルトにて連結して単電池７７の交換が完了する。 Next, a new unit cell module including a new unit cell 77 and a distance adjusting body 79 whose thickness is adjusted in accordance with the thickness of the unit cell 77 is prepared. In this new unit cell module, the end portions of the bus bars 80 are laser-welded to the positive terminal 77 a and the negative terminal 77 b of each unit cell 77 at positions positioned with reference to the end surface of the unit cell 77.
Next, a new single battery module is positioned at the position of the assembled battery 23 to which the defective battery module is attached, and the assembled battery 23 is assembled with an appropriate compressive force by passing through a bolt as a holding member. The ends of the two are connected with bolts to complete the replacement of the unit cell 77.
＜組電池２３および導風カバー３１Ｌの組み付け手順＞
　次に、組電池２３および導風カバー３１Ｌの組み付け手順について説明する。
　まず、導風カバー３１Ｌの側面部４９Ｔ，４９Ｎの切欠き部から組電池２３の各端板８５，８５を外部に露出させた状態で側面部４９Ｔ，４９Ｎを組電池２３の冷却板７１に当接させる。このとき、ファン６７および電動モータ６９を側面部４９Ｔ，４９Ｎに組み付ける。
　次に、側面部４９Ｔ，４９Ｎに組電池２３の各端板８５，８５を含む両端部分を除いた組電池２３の表面部分を覆うように導風カバー３１Ｌの上面部４１，下面部４３，後面部４５，前面部４７をねじ部材６５で固定する。
　なお、導風カバー３１Ｌの下面部４３の組付けに際しては、組電池２３を組付ける際に、弾性部材３９に穿設された貫通孔３９ａにボルト８７を予め挿通させて組電池２３のＸ方向中央に位置させ、導風カバー３１Ｌの下面部４３に穿設された貫通孔４３ａから弾性部材３９を挿通して下面部４３が組付けられる（図１４参照）。
　次に組電池２３の両端の端板８５に固定された各ボルト８５ａに弾性部材２７をそれぞれ挿通する。弾性部材２７は、同軸に配置された金属性の外筒と内筒との間隙にゴム部材またはその他の樹脂材からなる弾性材料が結着された構造によって構成されている。 <Assembly procedure of assembled battery 23 and wind guide cover 31L>
Next, a procedure for assembling the assembled battery 23 and the air guide cover 31L will be described.
First, the side portions 49T and 49N are brought into contact with the cooling plate 71 of the assembled battery 23 in a state where the end plates 85 and 85 of the assembled battery 23 are exposed to the outside from the notches of the side portions 49T and 49N of the air guide cover 31L. Make contact. At this time, the fan 67 and the electric motor 69 are assembled to the side surfaces 49T and 49N.
Next, the upper surface portion 41, the lower surface portion 43, and the rear surface of the wind guide cover 31L so as to cover the surface portions of the assembled battery 23 excluding both end portions including the end plates 85 and 85 of the assembled battery 23 on the side surface portions 49T and 49N. The surface portion 45 and the front surface portion 47 are fixed with a screw member 65.
When assembling the lower surface portion 43 of the air guide cover 31L, when the assembled battery 23 is assembled, a bolt 87 is inserted in advance in the through hole 39a formed in the elastic member 39 so that the X direction of the assembled battery 23 is reached. The lower surface portion 43 is assembled by inserting the elastic member 39 from the through hole 43a formed in the lower surface portion 43 of the air guide cover 31L in the center (see FIG. 14).
Next, the elastic member 27 is inserted into each bolt 85 a fixed to the end plates 85 at both ends of the assembled battery 23. The elastic member 27 is configured by a structure in which an elastic material made of a rubber member or other resin material is bound to a gap between a metallic outer cylinder and an inner cylinder arranged coaxially.
　次に、中央フレーム７ａに固定された一対の支持ブラケット２５，２５におけるＵの字状の凹部１１３（図４参照）に前記弾性部材２７の外筒部分を嵌合するように、ボルト８５ａに対する弾性部材２７の軸方向の相対位置を調整したのち、各ボルト８５ａにナット１１５（図４参照）をそれぞれ螺着する。ナット１１５を螺着するボルト８５ａの雄ねじ部は、ボルト８５ａに対する弾性部材２７の軸方向の相対位置を任意に調整できるように軸方向に長目に刻設されている。ナット１１５はダブルナット構造とし、螺着したナットが緩まないようにしている。 Next, the elasticity against the bolt 85a so that the outer cylindrical portion of the elastic member 27 is fitted into the U-shaped recess 113 (see FIG. 4) of the pair of support brackets 25, 25 fixed to the central frame 7a. After adjusting the relative position of the member 27 in the axial direction, a nut 115 (see FIG. 4) is screwed to each bolt 85a. The male thread portion of the bolt 85a to which the nut 115 is screwed is engraved in the axial direction so that the relative position in the axial direction of the elastic member 27 with respect to the bolt 85a can be arbitrarily adjusted. The nut 115 has a double nut structure so that the screwed nut is not loosened.
＜組電池２３の車両１への組み付け手順＞
　次に、組電池２３の底面側に組み付けていた弾性部材３９の凹部３９ｂを、中央フレーム７ａに固定された支持板３７の先端部に設けられた円錐台状の凸部３７ａ（図１４参照）に嵌合すると共に各支持ブラケット２５，２５の凹部１１３に、前記組電池２３等の組み付けで位置調整された各弾性部材２７を上方から嵌合する。 <Assembly procedure of assembled battery 23 to vehicle 1>
Next, the concave portion 39b of the elastic member 39 assembled on the bottom surface side of the assembled battery 23 is a truncated cone-shaped convex portion 37a provided at the tip of the support plate 37 fixed to the central frame 7a (see FIG. 14). The elastic members 27 whose positions are adjusted by assembling the assembled battery 23 and the like are fitted into the recesses 113 of the support brackets 25 and 25 from above.
　次に、各支持ブラケット２５，２５の凹部１１３に嵌合した各弾性部材２７を上方から押圧するように押圧部材（図示せず）をそれぞれ押し当ててねじ部材により凹部１１３に固定する。
　なお、ねじ部材により固定される押圧部材に替えて、車両側と組電池側にそれぞれに係合部（図示せず）と被係合部（図示せず）を設けることにより固定する方法であってもよい。 Next, a pressing member (not shown) is pressed against each elastic member 27 fitted in the recess 113 of each support bracket 25, 25 from above, and is fixed to the recess 113 with a screw member.
Instead of the pressing member fixed by the screw member, a fixing method is provided by providing an engaging portion (not shown) and an engaged portion (not shown) on the vehicle side and the assembled battery side, respectively. May be.
　なお、弾性部材２７の軸方向の位置調整のために長目に刻設したボルト８５ａの雄ねじ部と、支持ブラケット２５の位置調整のためにその基部２５ａに長目に穿設したねじ部材２９の挿通用の長孔とは、何れの構成も組電池２３の幅寸法の製造上のばらつきに対応するためのものであるが、何れか一方の構成を止めて通常の長さのボルト雄ねじ部または円形状のねじ部材挿通用孔にしてもよい。
　なお、組電池２３側の接続端子（図示せず）と車両１側の接続端子（図示せず）とが設けられ、組電池２３が車両１に組付けられた状態で両接続端子同士が互いに電気的に接続されるように両接続端子がそれぞれ配置されており、組電池２３を車両１に組み付けると同時に該電気的接続が完了するように構成されている。 It should be noted that a male threaded portion of a bolt 85a engraved on the long side for adjusting the axial position of the elastic member 27 and a screw member 29 formed on the long side of the base 25a for adjusting the position of the support bracket 25. The long hole for insertion is used to cope with manufacturing variations in the width dimension of the assembled battery 23. However, either one of the structures is stopped and the bolt male thread portion having a normal length or A circular screw member insertion hole may be used.
Note that a connection terminal (not shown) on the assembled battery 23 side and a connection terminal (not shown) on the vehicle 1 side are provided, and the connection terminals are connected to each other in a state where the assembled battery 23 is assembled to the vehicle 1. Both connection terminals are arranged so as to be electrically connected, and are configured to complete the electrical connection at the same time that the assembled battery 23 is assembled to the vehicle 1.
　以上の作業により、導風カバー３１Ｌ内に組み込まれた組電池２３の中央フレーム７ａへの固定作業が終了する。
　同様の方法により、他の３個の組電池２３の中央フレーム７ａへの固定作業も行うことで、全ての組電池２３の中央フレーム７ａへの固定作業が終了する。このようにして、各組電池２３…が車両１に搭載されることで、各組電池２３…を車両１の電源として有効に活用することができる。 With the above operation, the fixing operation of the assembled battery 23 incorporated in the air guide cover 31L to the central frame 7a is completed.
By fixing the other three assembled batteries 23 to the central frame 7a by the same method, the fixing work of all the assembled batteries 23 to the central frame 7a is completed. In this way, each assembled battery 23 is mounted on the vehicle 1 so that each assembled battery 23 can be effectively used as a power source of the vehicle 1.
　上述したような本発明の実施の形態によれば、単電池７７と間隔調整体７９とが冷却板７１の挟持面７１ａで挟持され、かつ、単電池７７と間隔調整体７９との圧縮剛性は単電池７７より間隔調整体７９の方が高くなるように構成されているので、各間隔調整体７９…の厚さを適宜設定することで、ボルト８７とナット８９とで強固に締結しても単電池７７を損傷する虞がなく最適な圧縮力で各単電池７７…を挟持することができる。また、強固に締結することで単電池７７と冷却板７１との熱伝導を良好にすると共に、各単電池７７…を強固に保持することができ、振動によって組電池２３に曲げ荷重が加わっても組電池２３が撓みにくくなる。また、組電池２３に圧縮荷重が発生して単電池モジュールに過度の圧縮荷重が付与されても単電池モジュールの構成部材のうちの一方である間隔調整体７９が圧縮荷重の殆どを受けることになり、他方の単電池７７は過度の圧縮荷重を受けることが回避される。
　また、間隔調整体７９は、傾斜した分割面８１で分割接合されているので、分割した一対の間隔調整体片７９ａ，７９ｂ同士を分割面８１の傾斜した方向に沿って相対的に適宜変位させることで、間隔調整体７９の厚さを各単電池７７ごとの厚さに対応した厚さにすることができる。 According to the embodiment of the present invention as described above, the unit cell 77 and the interval adjuster 79 are sandwiched by the clamping surface 71a of the cooling plate 71, and the compression rigidity between the unit cell 77 and the interval adjuster 79 is as follows. Since the interval adjusting body 79 is configured to be higher than the unit cell 77, the bolts 87 and nuts 89 can be firmly fastened by appropriately setting the thickness of each interval adjusting body 79. There is no risk of damaging the unit cells 77, and each unit cell 77 can be held with an optimum compressive force. Further, by firmly fastening, the heat conduction between the unit cell 77 and the cooling plate 71 can be improved, and each unit cell 77 can be held firmly, and a bending load is applied to the assembled battery 23 by vibration. However, the assembled battery 23 becomes difficult to bend. Further, even if a compressive load is generated in the assembled battery 23 and an excessive compressive load is applied to the single cell module, the interval adjusting body 79 that is one of the constituent members of the single cell module receives most of the compressive load. Thus, the other unit cell 77 is avoided from receiving an excessive compressive load.
Further, since the interval adjusting body 79 is divided and joined by the inclined dividing surface 81, the pair of divided interval adjusting body pieces 79a and 79b are relatively appropriately displaced along the inclined direction of the dividing surface 81. Thereby, the thickness of the space | interval adjustment body 79 can be made into the thickness corresponding to the thickness for every single cell 77. FIG.
　また、間隔調整体７９は、単電池７７の外周を囲繞する枠状に形成されているので、間隔調整体７９によって単電池７７を保護することができる。また、単電池７７から冷却板７１の挟持面７１ａに伝播した熱を組電池２３の外部に放出する冷却板７１の放熱部７１ｂを、冷却板７１で挟持した間隔調整体７９の外周より外方に位置付けたので、放熱部７１ｂによって間隔調整体７９および単電池７７を保護することができる。 Further, since the interval adjusting body 79 is formed in a frame shape surrounding the outer periphery of the unit cell 77, the unit cell 77 can be protected by the interval adjusting body 79. Further, the heat dissipating part 71b of the cooling plate 71 that releases heat transmitted from the unit cell 77 to the clamping surface 71a of the cooling plate 71 to the outside of the assembled battery 23 is outward from the outer periphery of the interval adjusting body 79 that is sandwiched by the cooling plate 71. Therefore, the space adjuster 79 and the unit cell 77 can be protected by the heat radiating portion 71b.
　また、放熱部７１ｂの各フィン８３…が薄肉に形成されていることにより放熱部７１ｂは挟持面７１ａより衝撃強度が低くなっているので、組電池２３に外部から衝撃力が加わった場合は、放熱部７１ｂのフィン８３…が塑性変形して衝撃を吸収することで単電池７７が保護される。
　また、冷却板７１の挟持面７１ａに垂直な方向の放熱部７１ｂのＸ方向幅寸法Ｔ１を、同方向の挟持面７１ａのＸ方向幅寸法Ｔ２より大きくしたので、フィン８３を可及的多く形成して放熱部７１ｂの面積を広くすることができ、冷却性能を十分確保することができる。 Further, since each fin 83 ... of the heat radiating portion 71b is formed thin, the heat radiating portion 71b has a lower impact strength than the sandwiching surface 71a, so when an impact force is applied to the assembled battery 23 from the outside, The unit cells 77 are protected by plastic deformation of the fins 83 of the heat dissipating part 71b to absorb the impact.
Further, since the X-direction width dimension T1 of the heat radiating portion 71b in the direction perpendicular to the clamping surface 71a of the cooling plate 71 is made larger than the X-direction width dimension T2 of the clamping surface 71a in the same direction, as many fins 83 are formed as possible. Thus, the area of the heat radiating portion 71b can be increased, and sufficient cooling performance can be ensured.
　また、車両１の中央フレーム７ａに対する支持ブラケット２５の固定位置は任意に調整可能に構成されているので、一対の支持ブラケット２５，２５間に架設される組電池２３の幅寸法の製造上のばらつきに対応することができる。
　また、端板８５に設けられたボルト８５ａに対する弾性部材２７の軸方向の相対位置は任意に調整可能に構成されているので、一対の支持ブラケット２５，２５間に弾性部材２７を介して架設される組電池２３の幅寸法の製造上のばらつきに対応することができる。 Further, since the fixing position of the support bracket 25 with respect to the central frame 7a of the vehicle 1 is configured to be arbitrarily adjustable, the manufacturing variation in the width dimension of the assembled battery 23 laid between the pair of support brackets 25, 25. It can correspond to.
Further, since the relative position in the axial direction of the elastic member 27 with respect to the bolt 85 a provided on the end plate 85 is configured to be arbitrarily adjustable, the elastic member 27 is installed between the pair of support brackets 25, 25. It is possible to cope with manufacturing variations in the width dimension of the assembled battery 23.
　また、一対の支持ブラケット２５，２５は、その水平方向の衝撃強度が鉛直方向の衝撃強度より低くなるように構成されているので、車両１の走行中に組電池２３または支持ブラケット２５に障害物が衝突して衝撃荷重が加わった場合でも、一対の支持ブラケット２５，２５が水平方向に容易に塑性変形するため組電池２３への損傷を低減することができる。 Further, since the pair of support brackets 25 and 25 are configured such that the impact strength in the horizontal direction is lower than the impact strength in the vertical direction, the battery pack 23 or the support bracket 25 is obstructed while the vehicle 1 is traveling. Even if an impact load is applied due to collision, the pair of support brackets 25 and 25 are easily plastically deformed in the horizontal direction, so that damage to the assembled battery 23 can be reduced.
　また、一対の支持ブラケット２５，２５に対する組電池２３の両端部の各固定位置は、それらの固定位置を通る仮想直線Ｎ１上に、組電池２３を含む導風カバー３１Ｌの重心位置Ｇ１１が近接するように位置付けられる一方、組電池２３の底面部の固定位置は、前記重心位置Ｇ１１を通る仮想直線Ｎ２上に近接するように位置付けられるので、弾性部材２７，３７を介して組電池２３が支持されることと相俟って、車両１の走行時の路面振動が組電池２３に伝播するのを好適に抑制することができる。また、組電池２３を含む他の導風カバー３１Ｒ，３３Ｌ，３３Ｒの各重心位置Ｇ１２，Ｇ１３，Ｇ１４についても同様に位置付けられているので、同様の振動抑制効果を奏することができる。 Further, the fixed positions of both ends of the assembled battery 23 with respect to the pair of support brackets 25, 25 are close to the gravity center position G11 of the air guide cover 31L including the assembled battery 23 on the virtual straight line N1 passing through the fixed positions. On the other hand, the fixed position of the bottom surface portion of the assembled battery 23 is positioned so as to be close to the virtual straight line N2 passing through the gravity center position G11, so that the assembled battery 23 is supported via the elastic members 27 and 37. In combination with this, it is possible to suitably suppress the road surface vibration during traveling of the vehicle 1 from propagating to the assembled battery 23. Further, since the gravity center positions G12, G13, and G14 of the other air guide covers 31R, 33L, and 33R including the assembled battery 23 are similarly positioned, the same vibration suppressing effect can be achieved.
　さらにまた、平面視において、乗車領域１３を除く各仮想直線Ｌ１，Ｌ２，Ｍ１，Ｍ２上に、組電池２３を含む各導風カバー３１Ｌ，３１Ｒ，３３Ｌ，３３Ｒの重心位置Ｇ１１，Ｇ１２，Ｇ１３，Ｇ１４がそれぞれ近接するように各導風カバー３１Ｌ，３１Ｒ，３３Ｌ，３３Ｒが位置付けられるので、弾性部材２７，３７を介して各組電池２３…を支持したことと相俟って、重量物である組電池２３をダイナミックダンパー（制振機構）として機能させて走行時の路面振動による車両１の振動を好適に抑制することができる。 Furthermore, in plan view, the center of gravity positions G11, G12, G13 of the wind guide covers 31L, 31R, 33L, 33R including the assembled battery 23 on the virtual straight lines L1, L2, M1, M2 excluding the boarding area 13 are shown. Since each of the wind guide covers 31L, 31R, 33L, and 33R is positioned so that the G14 is close to each other, the heavy batteries are coupled with the support of the assembled batteries 23 through the elastic members 27 and 37. By making the assembled battery 23 function as a dynamic damper (vibration control mechanism), vibration of the vehicle 1 due to road surface vibration during traveling can be suitably suppressed.
　次に、本発明の５つの変形例について以下に述べる。なお、これらの変形例の説明で参照する図において、上述した実施の形態で説明したものと同一または同等の部材等については、同一符号を付し詳細な説明は省略する。これらの変形例においても、上述した本発明の実施の形態と同一または同等の構成については、同様の作用・効果を奏することができるのは言うまでもない。
　（第１変形例）
　上述した実施の形態では、正極端子７７ａと負極端子７７ｂとが上部に設けられた単電池７７を組み込んだ組電池２３の例を示したが、図１５および図１６に示す第１変形例のように、正極端子１１７ａと負極端子１１７ｂとが両側部にそれぞれ設けられた単電池１７７を組み込んだ組電池１２３でもよい。 Next, five modifications of the present invention will be described below. Note that in the drawings referred to in the description of these modified examples, the same or equivalent members as those described in the above-described embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. Also in these modified examples, it goes without saying that the same actions and effects can be achieved with the same or equivalent configurations as those of the above-described embodiment of the present invention.
(First modification)
In the above-described embodiment, an example of the assembled battery 23 in which the unit cell 77 in which the positive electrode terminal 77a and the negative electrode terminal 77b are provided is shown. However, as in the first modification shown in FIGS. In addition, the battery pack 123 may include a unit cell 177 in which a positive electrode terminal 117a and a negative electrode terminal 117b are provided on both sides.
　この変形例の単電池１７７は、前記実施の形態の単電池７７より扁平な矩形状に形成されており、正極端子１１７ａと負極端子１１７ｂとは、矩形状の両側部の上下方向中間部に該両側部から外側方に向かって突出するようにそれぞれ設けられている。単電池１７７の外周を囲繞するように配置される間隔調整体片１１９ａ，１１９ｂの両側部には、正極端子１１７ａと負極端子１１７ｂとの位置に対応して切欠部１２１，１２２がそれぞれ形成されている。間隔調整体片１１９ａ，１１９ｂの分割面８１が傾斜していることで肉厚が薄くなった間隔調整体片１１９ａ，１１９ｂの各側部の一方の切欠部１２１は部材が完全に除去され、他方の切欠部１２２は凹状に切り欠かれている。 The unit cell 177 of this modification is formed in a flattened rectangular shape than the unit cell 77 of the above embodiment, and the positive electrode terminal 117a and the negative electrode terminal 117b are located at the middle in the vertical direction on both sides of the rectangular shape. Each is provided so as to protrude outward from both sides. Notch portions 121 and 122 are formed on both sides of the interval adjusting body pieces 119a and 119b arranged so as to surround the outer periphery of the unit cell 177, corresponding to the positions of the positive electrode terminal 117a and the negative electrode terminal 117b, respectively. Yes. The member is completely removed from one of the notches 121 on each side of the interval adjusting body pieces 119a and 119b whose thickness is reduced by the inclination of the dividing surface 81 of the interval adjusting body pieces 119a and 119b. The notch 122 is notched in a concave shape.
　単電池１７７を挟持する冷却板１２５の方向Ｙ１またはＹ２側の何れか一方の側部にも単電池１７７の正極端子１１７ａまたは負極端子１１７ｂの位置に対応して凹状に切り欠かれた矩形状切欠部１２５ａが形成されている。冷却板１２５は、本発明の「挟持部材」を構成する。冷却板１２５の外周に沿うように外周縁の近傍には、ボルト８７を挿通する貫通孔１２５ｂが６個穿設されている。該貫通孔１２５ｂは、ボルト８７の直径と略同一の円形状に形成されている。 A rectangular cutout which is cut out in a concave shape corresponding to the position of the positive electrode terminal 117a or the negative electrode terminal 117b of the single battery 177 on either side in the direction Y1 or Y2 side of the cooling plate 125 sandwiching the single battery 177 A portion 125a is formed. The cooling plate 125 constitutes a “clamping member” of the present invention. Six through holes 125b through which the bolts 87 are inserted are formed in the vicinity of the outer peripheral edge along the outer periphery of the cooling plate 125. The through hole 125b is formed in a circular shape substantially the same as the diameter of the bolt 87.
　この変形例の単電池１７７は、前記実施の形態の単電池７７に比べて、扁平な分、１個当たりの電池の容量も少ないため、前記実施の形態の単電池７７と同等の電池の容量を得るためには、前記実施の形態の単電池７７の個数より多い単電池を必要とする。そのため、単電池１７７と冷却板１２５とを積層したときに積層方向の寸法が大きくならないように間隔調整体片１１９ａ，１１９ｂおよび冷却板１２５の厚さを薄くしている。その結果、前記実施の形態における冷却板７１に穿設された通気孔８２ｂに相当する通気孔は、この変形例の冷却板１２５には設けられていない。この変形例の単電池１７７は、扁平な分、冷却板１２５に熱が伝播し易い上、組み込まれる冷却板１２５の個数が多いので放熱性が比較的良いこともあって、冷却板１２５に通気孔を設けなくても支障はない。 Since the unit cell 177 of this modification is flat compared to the unit cell 77 of the above embodiment, the capacity of the battery per unit is also small, so that the battery capacity equivalent to the unit cell 77 of the above embodiment is small. In order to obtain the above, more cells than the number of cells 77 in the above embodiment are required. For this reason, the thickness of the gap adjusting body pieces 119a and 119b and the cooling plate 125 is reduced so that the dimension in the stacking direction does not increase when the unit cell 177 and the cooling plate 125 are stacked. As a result, the air holes corresponding to the air holes 82b formed in the cooling plate 71 in the above embodiment are not provided in the cooling plate 125 of this modification. The unit cell 177 of this modification is easy to transmit heat to the cooling plate 125 due to its flatness, and since the number of the cooling plates 125 to be incorporated is large, the heat dissipation is relatively good. There is no problem even if pores are not provided.
　（第２変形例）
　上述した実施の形態および第１変形例では、単電池の外周全域を囲繞する略矩形枠状に形成された間隔調整体の例を示したが、図１７に示す第２変形例のように、車両１の走行時に水平方向より上下方向の衝撃荷重を受ける頻度が高いことに配慮して、単電池７７の外周（冷却板７１の挟持面７１ａで挟持された面を除いた単電池７７の外周）の全域ではなく単電池７７の挟持面７１ａに沿う水平方向両側にそれぞれ位置する外周部分の外側方にのみ間隔調整体１２７を配置するようにしてもよい。この変形例の間隔調整体１２７は、前記実施の形態における間隔調整体７９の両間隔調整体片７９ａ，７９ｂの両側部を長孔９０ａ近傍の部位で切断して残った両端部をそれぞれ第１間隔調整体片１２９ａと第２間隔調整体片１２９ｂとして構成したものである。第１間隔調整体片１２９ａおよび第２間隔調整体片１２９ｂは、本発明の「間隔調整体片」を構成する。 (Second modification)
In the above-described embodiment and the first modified example, the example of the interval adjusting body formed in a substantially rectangular frame shape surrounding the entire outer periphery of the unit cell is shown, but like the second modified example shown in FIG. Considering that the impact load in the vertical direction is higher than the horizontal direction when the vehicle 1 is traveling, the outer periphery of the unit cell 77 (the outer periphery of the unit cell 77 excluding the surface sandwiched by the sandwiching surface 71a of the cooling plate 71). ) May be arranged only on the outer side of the outer peripheral portion located on both sides in the horizontal direction along the sandwiching surface 71a of the unit cell 77, not in the entire area of (1). The distance adjusting body 127 of this modified example is obtained by cutting the both end portions of both distance adjusting body pieces 79a and 79b of the distance adjusting body 79 in the above-described embodiment at portions near the long holes 90a and leaving the first ends. The gap adjusting body piece 129a and the second gap adjusting body piece 129b are configured. The 1st space | interval adjustment body piece 129a and the 2nd space | interval adjustment body piece 129b comprise the "space | interval adjustment body piece" of this invention.
　第１間隔調整体片１２９ａは、厚さの薄い薄型第１間隔調整体片１３１ａと厚さの厚い厚型第１間隔調整体片１３１ｂとで構成されている。第２間隔調整体片１２９ｂは、厚型第１間隔調整体片１３１ｂと接合される厚さの薄い薄型第２間隔調整体片１３３ａと、薄型第１間隔調整体片１３１ａと接合される厚さの厚い厚型第２間隔調整体片１３３ｂとで構成されている。厚型第１間隔調整体片１３１ｂと厚型第２間隔調整体片１３３ｂ同士および薄型第１間隔調整体片１３１ａと薄型第２間隔調整体片１３３ａ同士は、それぞれ同一の形状に形成されている。厚型第１間隔調整体片１３１ｂと薄型第２間隔調整体片１３３ａとの接合面（分割面８１）および薄型第１間隔調整体片１３１ａと厚型第２間隔調整体片１３３ｂとの接合面（分割面８１）は、Ｚ方向に平行な面であり、間隔調整体１２７が冷却板７１の挟持面７１ａで挟持されるときの間隔調整体１２７の当接面に対してそれぞれ傾斜している。 The first interval adjusting body piece 129a is composed of a thin first interval adjusting body piece 131a having a small thickness and a thick first interval adjusting body piece 131b having a large thickness. The second interval adjusting body piece 129b has a thin and thin second interval adjusting body piece 133a that is bonded to the thick first interval adjusting body piece 131b and a thickness that is bonded to the thin first interval adjusting body piece 131a. Thick thick second interval adjusting body piece 133b. The thick first interval adjusting body piece 131b and the thick second interval adjusting body piece 133b, and the thin first interval adjusting body piece 131a and the thin second interval adjusting body piece 133a are formed in the same shape. . Joint surface (division surface 81) between the thick first interval adjusting body piece 131b and the thin second interval adjusting body piece 133a and joining surface between the thin first interval adjusting body piece 131a and the thick second interval adjusting body piece 133b. The (dividing surface 81) is a surface parallel to the Z direction, and is inclined with respect to the contact surface of the interval adjusting body 127 when the interval adjusting body 127 is clamped by the clamping surface 71a of the cooling plate 71. .
　この変形例の間隔調整体１２７は、冷却板７１の挟持面７１ａで挟持される単電池７７の一対の面の平行度は、不良品とはならない程度に具備しているものの単電池７７の厚さが一定でないため、挟持される単電池７７の一対の面が平行でない場合でも単電池７７を最適な状態で挟持することができる。すなわち、この変形例の間隔調整体１２７は、互いに接合される厚型第１間隔調整体片１３１ｂと薄型第２間隔調整体片１３３ａとのＹ方向相対位置および薄型第１間隔調整体片１３１ａと厚型第２間隔調整体片１３３ｂとのＹ方向相対位置を単電池７７の不均一な厚さに応じてそれぞれ個別に調整することで、厚さが一定でない単電池７７に対しても間隔調整体１２７の厚さを最適な厚さに設定することができる。この結果、単電池７７を最適な状態で挟持することができる。
　また、この変形例の間隔調整体１２７は、単電池７７の両側のみを囲繞するものであるので、各単電池７７の正極端子７７ａと負極端子７７ｂとを接続するバスバー８０と干渉することがなく、材料を節約して小型化、軽量化することができる。 Although the distance adjusting body 127 of this modification is provided with the parallelism of the pair of surfaces of the unit cell 77 sandwiched by the sandwiching surface 71a of the cooling plate 71 so as not to become a defective product, the thickness of the unit cell 77 Therefore, even when the pair of surfaces of the unit cell 77 to be sandwiched is not parallel, the unit cell 77 can be sandwiched in an optimum state. That is, the distance adjusting body 127 of this modification includes the relative position in the Y direction between the thick first distance adjusting body piece 131b and the thin second distance adjusting body piece 133a joined together, and the thin first distance adjusting body piece 131a. By adjusting the relative position in the Y direction with respect to the thick second interval adjusting body piece 133b individually according to the non-uniform thickness of the unit cell 77, the interval adjustment is also performed for the unit cell 77 whose thickness is not constant. The thickness of the body 127 can be set to an optimum thickness. As a result, the unit cell 77 can be held in an optimum state.
In addition, since the interval adjusting body 127 of this modification surrounds only both sides of the unit cell 77, it does not interfere with the bus bar 80 that connects the positive terminal 77a and the negative terminal 77b of each unit cell 77. , Can save material and reduce size and weight.
　（第３変形例）
　上述した第２変形例では、厚型第１間隔調整体片１３１ｂと薄型第２間隔調整体片１３３ａとの接合面（分割面８１）および薄型第１間隔調整体片１３１ａと厚型第２間隔調整体片１３３ｂとの接合面（分割面８１）は、Ｚ方向に平行な面で傾斜している間隔調整体の例を示したが、図１８に示す第３変形例のように、前記接合面（分割面８１）がＹ方向に平行な面で傾斜している間隔調整体であってもよい。この変形例の間隔調整体１３５は、同一の形状をした４個の間隔調整体片１３７を組み合わせたものであり、各間隔調整体片１３７…はＹ方向から見て、Ｚ方向に長い略台形状に形成されている。 (Third Modification)
In the second modified example described above, the joint surface (divided surface 81) between the thick first interval adjusting body piece 131b and the thin second interval adjusting body piece 133a, and the thin first interval adjusting body piece 131a and the thick second interval. Although the example of the space | interval adjustment body in which the joining surface (partition surface 81) with the adjustment body piece 133b inclines in the surface parallel to a Z direction was shown, like the 3rd modification shown in FIG. The space | interval adjustment body which the surface (division surface 81) inclines in the surface parallel to a Y direction may be sufficient. The interval adjusting body 135 of this modification is a combination of four interval adjusting body pieces 137 having the same shape, and each of the interval adjusting body pieces 137. It is formed into a shape.
　方向Ｙ１側と方向Ｙ２側とのそれぞれ一対の間隔調整体片１３７，１３７の傾斜した分割面８１同士を上下逆向きに対向させ接合させることで、接合面（分割面８１）は、冷却板７１の挟持面７１ａで挟持されるときの間隔調整体１３５の当接面に対して傾斜するＹ方向に平行な面となる。この変形例も前記第２変形例と同様に、方向Ｙ１側と方向Ｙ２側との一対の間隔調整体片１３７，１３７同士のＺ方向相対位置を単電池７７の不均一な厚さに応じてそれぞれ調整することで、間隔調整体１３５の厚さを単電池７７にとって最適な厚さに設定することができる。この結果、単電池７７を最適な状態で挟持することができる。 By joining the inclined divided surfaces 81 of the pair of distance adjusting body pieces 137 and 137 on the direction Y1 side and the direction Y2 side to face each other in the upside down direction, the bonded surface (divided surface 81) becomes the cooling plate 71. It becomes a surface parallel to the Y direction which inclines with respect to the contact surface of the space | interval adjustment body 135 when it is clamped by this clamping surface 71a. Similarly to the second modified example, this modified example also sets the relative position in the Z direction between the pair of interval adjusting body pieces 137 and 137 on the direction Y1 side and the direction Y2 side according to the uneven thickness of the unit cell 77. By adjusting each, the thickness of the space | interval adjustment body 135 can be set to the optimal thickness for the cell 77. FIG. As a result, the unit cell 77 can be held in an optimum state.
　（第４変形例）
　上述した実施の形態および第２，第３の各変形例では、Ｙ方向およびＺ方向に平行で、かつ、Ｚ方向に長い放熱面を有する複数のフィン８３…が形成された冷却板７１の例を示したが、図１９に示す第４変形例のように、Ｘ方向およびＹ方向に平行な放熱面を有する複数のフィン１３９…が形成された冷却板１４１であってもよい。この変形例の冷却板１４１は、素材の製造段階ではＺ方向の押し出し成型により製造され、複数のフィン１３９…はスカイブ加工により形成される。冷却板１４１は、本発明の「挟持部材」を構成する。なお、複数のフィン１３９…を、さらにＺ方向に切削加工することで、ピン状のフィンが形成される。ピン状のフィンの場合は、フィンに導入される冷却風の方向によって冷却性能が大きく変化することがない。
　この変形例の冷却板１４１によれば、車両１の走行時に走行風が流れる方向に対して複数のフィン１３９…の放熱面が略平行になるように組電池を車両１に配置することが容易になるので、そうすることで、電動ファン等で各フィン１３９…に冷却風を導くことなく走行風を各フィン１３９…の放熱面に簡単に導入することができる。 (Fourth modification)
In the above-described embodiment and the second and third modifications, an example of the cooling plate 71 in which a plurality of fins 83 that are parallel to the Y direction and the Z direction and have long heat dissipation surfaces in the Z direction are formed. However, it may be a cooling plate 141 in which a plurality of fins 139... Having heat radiation surfaces parallel to the X direction and the Y direction are formed as in the fourth modification shown in FIG. The cooling plate 141 of this modification is manufactured by extrusion molding in the Z direction at the material manufacturing stage, and the plurality of fins 139 are formed by skiving. The cooling plate 141 constitutes a “clamping member” of the present invention. In addition, a pin-shaped fin is formed by further cutting the plurality of fins 139 in the Z direction. In the case of a pin-shaped fin, the cooling performance does not change greatly depending on the direction of the cooling air introduced into the fin.
According to the cooling plate 141 of this modification, it is easy to arrange the assembled battery in the vehicle 1 so that the heat radiation surfaces of the plurality of fins 139 are substantially parallel to the direction in which the traveling wind flows when the vehicle 1 is traveling. Therefore, the traveling wind can be easily introduced into the heat radiation surface of each fin 139... Without guiding the cooling wind to each fin 139.
　（第５変形例）
　上述した実施の形態および第１ないし第４の各変形例では、各冷却板のＹ方向長さを同一にした例を示したが、図２０に示す第５変形例の冷却板１４３のように、各冷却板１４３…の放熱部７１ｂの先端をなぞった稜線が略円弧状になるように、冷却板１４３のＹ方向寸法がＸ方向中央部に位置する冷却板１４３ほど大きくなるように放熱部７１ｂを形成してもよい。そうすることで、充放電時に最も高温になり、熱が滞留し易い組電池のＸ方向中央部が効果的に冷却される。冷却板１４３は、本発明の「挟持部材」を構成する。 (5th modification)
In the above-described embodiment and each of the first to fourth modified examples, the example in which the lengths in the Y direction of the respective cooling plates are the same is shown, but like the cooling plate 143 of the fifth modified example shown in FIG. The cooling plate 143 is configured so that the ridge line tracing the tip of the heat radiating unit 71b of each cooling plate 143 has a substantially arc shape, so that the cooling plate 143 has a larger dimension in the Y direction as the cooling plate 143 located at the center in the X direction. 71b may be formed. By doing so, the X direction center part of the assembled battery which becomes the highest temperature at the time of charging / discharging and is likely to retain heat is effectively cooled. The cooling plate 143 constitutes the “clamping member” of the present invention.
　さらに、図２０に示すように、各冷却板１４３…のＹ方向寸法がＺ方向中央部ほど大きくなるように各冷却板１４３…の放熱部７１ｂの側端を略円弧状に形成してもよい。そうすることで、充放電時に最も高温になり、熱が滞留し易い各単電池７７…のＺ方向中央部が効果的に冷却される。なお、全ての冷却板１４３による略円弧状の稜線の形成と各冷却板１４３側端の略円弧状の形成とは、充放電時における組電池２３の温度状況に応じて何れか一方の形成のみを採用してもよい。 Further, as shown in FIG. 20, the side ends of the heat radiation portions 71b of the respective cooling plates 143... May be formed in a substantially arc shape so that the Y-direction dimensions of the respective cooling plates 143. . By doing so, the Z direction center part of each single cell 77 ... which becomes the highest temperature at the time of charging / discharging and heat tends to stay is effectively cooled. In addition, the formation of the substantially arc-shaped ridge line by all the cooling plates 143 and the formation of the substantially arc-shaped shape at the end of each cooling plate 143 are only one of them depending on the temperature condition of the assembled battery 23 at the time of charging / discharging. May be adopted.
　上述した本発明の実施の形態および第１ないし５の各変形例は本発明を説明するための一例であり、本発明は、前記の実施の形態および各変形例に限定されるものではなく、特許請求の範囲と明細書との全体から読み取れる発明の要旨または思想に反しない範囲で適宜変更可能であり、そのような変更後の組電池等もまた、本発明の技術的範囲に含まれるものである。
　例えば、上述した実施の形態および各変形例においては、本発明の組電池を車両１に搭載した例を示したが、車両以外に船舶や飛行機等の移動体に本発明の組電池を搭載するようにしてもよい。また、組電池を車両に搭載する場合の車両としては、四輪車以外に、前側または後側の何れか一方側が１輪で他方側が２輪の三輪車であってもよい。 The above-described embodiments of the present invention and the first to fifth modifications are examples for explaining the present invention, and the present invention is not limited to the above-described embodiments and modifications. The invention can be appropriately changed without departing from the gist or concept of the invention which can be read from the whole of the claims and the specification, and the assembled battery after such change is also included in the technical scope of the present invention. It is.
For example, in the above-described embodiment and each modification, the example in which the assembled battery of the present invention is mounted on the vehicle 1 has been described. However, the assembled battery of the present invention is mounted on a moving body such as a ship or an airplane other than the vehicle. You may do it. In addition to the four-wheeled vehicle, the vehicle in which the assembled battery is mounted on the vehicle may be a three-wheeled vehicle having one wheel on the front side or the rear side and two wheels on the other side.
　また、上述した実施の形態および各変形例においては、単電池としてリチウムイオン電池の例を示したが、これ以外にニッケル水素電池その他の二次電池あるいはキャパシタ等の蓄電素子を単電池とした組電池であってもよい。
　また、上述した実施の形態および各変形例においては、単電池を１個だけ冷却板間に挟持するようにしたが、前記第１変形例の単電池１７７のような扁平な単電池を複数個（例えば２ないし３個）重ねてそれら単電池群の外周を間隔調整体で囲繞して構成された単電池モジュールを両側から冷却板で挟持し該単電池モジュールと冷却板とを積層するようにして組電池を構成してもよい。 Further, in the above-described embodiment and each modification, an example of a lithium ion battery has been shown as a unit cell, but in addition to this, a set in which a storage battery element such as a nickel hydride battery or other secondary battery or capacitor is a unit cell. It may be a battery.
In the above-described embodiment and each modification, only one unit cell is sandwiched between the cooling plates. However, a plurality of flat unit cells such as the unit cell 177 of the first modification example are provided. (For example, 2 to 3) The unit cell modules configured by overlapping and surrounding the outer periphery of the unit cell group with a spacing adjuster are sandwiched by the cooling plates from both sides, and the unit cell modules and the cooling plates are stacked. An assembled battery may be configured.
　さらにまた、上述した実施の形態および各変形例においては、傾斜した分割面で分割された間隔調整体の間隔調整体片同士を相対変位させて、間隔調整体の厚さを単電池の厚さに対応した所定の厚さにする例を示したが、これに替えて、傾斜することなく互いに平行な表面と裏面とを有し厚さの異なる複数の間隔調整体片を適宜選定して積層することで間隔調整体の厚さを前記所定の厚さにするようにしてもよい。なお、この代替例では、前記所定の厚さに合致させるために積層する間隔調整体片の個数が多くなる可能性があるが、上述した実施の形態および各変形例のように、傾斜した分割面で分割された間隔調整体片同士を相対変位させて前記所定の厚さにする場合は、そのような虞はない。 Furthermore, in the above-described embodiment and each modification, the distance adjusting body pieces of the space adjusting body divided by the inclined dividing surface are relatively displaced so that the thickness of the space adjusting body is the thickness of the unit cell. However, instead of this, a plurality of gap adjusting body pieces having front and back surfaces that are parallel to each other without being inclined are appropriately selected and laminated. By doing so, the thickness of the interval adjusting body may be set to the predetermined thickness. In this alternative example, there is a possibility that the number of interval adjusting body pieces to be stacked in order to match the predetermined thickness may increase. However, as in the above-described embodiment and each modification example, the inclined division pieces may be increased. When the distance adjusting body pieces divided on the surface are relatively displaced to have the predetermined thickness, there is no such a possibility.
　　１　　車両（移動体）
　　３　　前輪（車輪）
　　７　　車体フレーム（移動体の本体）
　７ａ　　中央フレーム（移動体の本体）
　　９　　後輪（車輪）
　１３　　乗車領域
　２３，１２３　　組電池
　２５　　支持ブラケット（固定部材）
　２７　　弾性部材
　２９　　ねじ部材
　３７　　支持板（他の固定部材）
　３９　　弾性部材（他の弾性部材）
　７１，１２５，１４１，１４３　　冷却板（挟持部材）
　７１ａ　挟持面（受熱部）
　７１ｂ　放熱部
　７７，１７７　　単電池
　７９，１２７，１３５　　間隔調整体
　７９ａ，１２９ａ　　第１間隔調整体片（間隔調整体片）
　７９ｂ，１２９ｂ　　第２間隔調整体片（間隔調整体片）
　８１　　分割面
　８３　　フィン
　８５　　端板（保持部材）
　８５ａ　ボルト
　８７　　ボルト（保持部材）
　８９　　ナット（保持部材）
１１９ａ，１１９ｂ，１３７　　間隔調整体片
Ｇ１１，Ｇ１２，Ｇ１３，Ｇ１４，Ｇ２　　重心位置
Ｌ１，Ｌ２，Ｍ１，Ｍ２　　仮想直線
　Ｎ１　　仮想直線
　Ｎ２　　仮想直線（他の仮想直線）
Ｐ１，Ｐ２，Ｑ１，Ｑ２　　接地位置
　Ｔ１　　Ｘ方向幅寸法（幅寸法）
　Ｔ２　　Ｘ方向幅寸法（幅寸法） 1 Vehicle (moving body)
3 Front wheels
7 Body frame (main body of moving body)
7a Center frame (main body of moving body)
9 Rear wheel
13 Riding area 23,123 Battery assembly 25 Support bracket (fixing member)
27 Elastic member 29 Screw member 37 Support plate (other fixing member)
39 Elastic members (other elastic members)
71, 125, 141, 143 Cooling plate (clamping member)
71a Clamping surface (heat receiving part)
71b Heat radiation part 77, 177 Cell 79, 127, 135 Interval adjusting body 79a, 129a First interval adjusting body piece (interval adjusting body piece)
79b, 129b Second interval adjusting body piece (interval adjusting body piece)
81 Dividing surface 83 Fin 85 End plate (holding member)
85a bolt 87 bolt (holding member)
89 Nut (holding member)
119a, 119b, 137 Distance adjusting body pieces G11, G12, G13, G14, G2 Center of gravity positions L1, L2, M1, M2 Virtual straight line N1 Virtual straight line N2 Virtual straight line (other virtual straight lines)
P1, P2, Q1, Q2 Grounding position T1 X direction width dimension (width dimension)
T2 X direction width dimension (width dimension)

Claims (13)

  1. 　単電池を挟持する平坦な挟持面を備え、この挟持面に垂直な方向に間隙を隔てて前記挟持面同士が平行に対向する状態で並設された複数の挟持部材と、
    　前記間隙のそれぞれに置された単電池と、
    　前記挟持部材の挟持面で挟持された両面を除く前記単電池の外周の外側方でかつ前記間隙のそれぞれに別個に配置された間隔調整体と、
    　前記単電池と前記間隔調整体とが前記挟持部材の挟持面で挟持された状態でその挟持を保持する保持部材とを備える組電池であって、
    　前記挟持部材で挟持されたときの前記単電池と前記間隔調整体との圧縮剛性は、前記単電池より前記間隔調整体の方が高くなるように構成されていることを特徴とする組電池。     A plurality of sandwiching members provided in parallel in a state where the sandwiching surfaces face each other in parallel with a gap in a direction perpendicular to the sandwiching surface provided with a flat sandwiching surface for sandwiching the unit cells;
    A single cell placed in each of the gaps;
    An interval adjuster separately disposed on the outer side of the outer periphery of the unit cell excluding both surfaces sandwiched by the sandwiching surface of the sandwiching member and in each of the gaps,
    A battery assembly comprising: a holding member that holds the unit cell and the interval adjusting body in a state of being sandwiched by a sandwiching surface of the sandwiching member;
    The assembled battery is configured such that the compression rigidity of the unit cell and the interval adjusting body when sandwiched between the clamping members is higher than that of the unit cell.
  2. 　請求項１に記載の組電池において、
      前記間隔調整体は、前記挟持部材の挟持面で挟持された両面を除く前記単電池の外周を囲繞するように枠状に形成されていることを特徴とする組電池。     The assembled battery according to claim 1,
    The battery pack is characterized in that the gap adjusting body is formed in a frame shape so as to surround an outer periphery of the unit cell except for both surfaces sandwiched by a sandwiching surface of the sandwiching member.
  3. 　請求項１に記載の組電池において、
    　前記挟持部材の挟持面で挟持された両面を除く前記単電池の外周のうち、前記単電池の前記挟持面に沿う水平方向両側にそれぞれ位置する外周部分の外側方にのみ前記間隔調整体がそれぞれ配置されていることを特徴とする組電池。     The assembled battery according to claim 1,
    Of the outer periphery of the unit cell excluding both surfaces sandwiched by the sandwiching surface of the sandwiching member, the spacing adjusters are respectively only on the outer sides of the outer peripheral portions respectively positioned on both sides in the horizontal direction along the sandwiching surface of the unit cell. An assembled battery characterized by being arranged.
  4. 　請求項１ないし請求項３のうち何れか一つに記載の組電池において、
    　前記間隔調整体は、隣り合う前記挟持部材同士の対向する一対の挟持面のうち一方の挟持面に当接する前記間隔調整体の当接面と、前記一対の挟持面のうち他方の挟持面に当接する前記間隔調整体の当接面との間に位置付けられた分割面で分割接合され、
    　前記分割面は、前記間隔調整体の当接面に対して傾斜していることを特徴とする組電池。     The assembled battery according to any one of claims 1 to 3,
    The spacing adjustment body is provided on a contact surface of the spacing adjustment body that abuts one clamping surface of a pair of opposing clamping surfaces of the adjacent clamping members and the other clamping surface of the pair of clamping surfaces. Divided and joined by a dividing surface positioned between the abutting surfaces of the spacing adjusting bodies that abut,
    The assembled battery is characterized in that the dividing surface is inclined with respect to the contact surface of the interval adjusting body.
  5. 　請求項１ないし請求項４のうち何れか一つに記載の組電池において、
    　前記挟持部材は、前記単電池で発生した熱が前記単電池と当接して伝播する受熱部と、前記受熱部の側縁に設けられ前記受熱部に伝播した熱を前記組電池の外部に放出する放熱部とを備え、
    　前記放熱部は、前記挟持部材で挟持した前記間隔調整体の外周より外方に位置付けられていることを特徴とする組電池。     The assembled battery according to any one of claims 1 to 4,
    The sandwiching member releases heat that is generated at the unit cell in contact with the unit cell and propagates in contact with the unit cell, and heat that is transmitted to the heat receiver unit at a side edge of the heat receiver unit. And a heat dissipating part
    The assembled battery according to claim 1, wherein the heat dissipating part is positioned outward from an outer periphery of the interval adjusting body sandwiched by the sandwiching member.
  6. 　請求項５に記載の組電池において、
    　前記放熱部には放熱面を有する複数のフィンが形成され、これらのフィンが薄肉に形成されていることで前記放熱部は、前記間隔調整体より衝撃強度が低くなるように構成されていることを特徴とする組電池。     The assembled battery according to claim 5,
    A plurality of fins having a heat radiating surface are formed in the heat radiating portion, and the fins are formed thin so that the heat radiating portion is configured to have a lower impact strength than the interval adjusting body. A battery pack characterized by.
  7. 　請求項５または請求項６に記載の組電池において、
    　前記挟持部材の挟持面に垂直な方向の前記放熱部の幅寸法は、同方向の前記受熱部の幅寸法より大きく、同方向の前記受熱部の幅寸法と同方向の前記間隔調整体の幅寸法とを合わせた寸法より小さいことを特徴とする組電池。     The assembled battery according to claim 5 or 6,
    The width dimension of the heat radiating part in the direction perpendicular to the clamping surface of the clamping member is larger than the width dimension of the heat receiving part in the same direction, and the width of the gap adjusting body in the same direction as the width dimension of the heat receiving part in the same direction. An assembled battery having a size smaller than the combined size.
  8. 　請求項１ないし請求項７のうち何れか一つに記載の組電池を搭載した移動体。 A mobile body on which the assembled battery according to any one of claims 1 to 7 is mounted.
  9. 　請求項８に記載の移動体において、
    　前記組電池は、前記挟持部材の挟持面に垂直な方向の両端部が移動体の本体に固定された固定部材にそれぞれ固定され、前記移動体の本体に対する前記固定部材の固定位置または前記組電池の両端部の前記固定部材に対する固定位置のうち少なくとも何れか一方の固定位置は、前記両端部間の距離に応じて任意に調整可能に構成され、
    　前記移動体の本体に対する前記固定部材の固定位置の調整は、前記固定部材に穿設された長孔からなる挿通孔に挿通されたねじ部材が前記移動体の本体に螺着されて前記固定部材が前記移動体の本体に固定され、前記挿通孔内における前記ねじ部材の相対位置を変更することで行われ、
    　前記組電池の両端部の前記固定部材に対する固定位置の調整は、前記組電池の両端部がそれぞれ弾性部材を介して前記固定部材に支持され、前記組電池の両端部と前記弾性部材との相対位置を変更することで行われることを特徴とする移動体。     The moving body according to claim 8,
    The assembled battery is fixed to a fixing member having both ends in a direction perpendicular to the clamping surface of the clamping member fixed to the main body of the moving body, and the fixed position of the fixing member with respect to the main body of the moving body or the assembled battery The fixing position of at least any one of the fixing positions of the both end portions with respect to the fixing member is configured to be arbitrarily adjustable according to the distance between the both end portions,
    Adjustment of the fixing position of the fixing member with respect to the main body of the moving body is performed by screwing a screw member inserted through an insertion hole made of a long hole formed in the fixing member into the main body of the moving body. Is fixed to the main body of the moving body, is performed by changing the relative position of the screw member in the insertion hole,
    The adjustment of the fixing position of the both ends of the assembled battery with respect to the fixing member is performed by the both ends of the assembled battery being supported by the fixing member via elastic members, and the relative positions of the both ends of the assembled battery and the elastic members are adjusted. A moving object characterized by being performed by changing a position.
  10. 　請求項９に記載の移動体において、
    　前記固定部材は、その水平方向の衝撃強度が鉛直方向の衝撃強度より低くなるように構成されていることを特徴とする移動体。     The moving body according to claim 9,
    The moving member according to claim 1, wherein the fixing member is configured such that the impact strength in the horizontal direction is lower than the impact strength in the vertical direction.
  11. 　請求項９または請求項１０に記載の移動体において、
    　前記組電池は、前記挟持部材の挟持面に垂直な方向の両端部が前記固定部材にそれぞれ前記弾性部材を介して固定され、
    　前記組電池の両端部を除く他の部位の固定位置も移動体の本体に設けられた他の固定部材に他の弾性部材を介して固定され、
    　前記組電池の両端部の前記固定部材に対する両固定位置は、それらの両固定位置を通る仮想直線上に前記組電池の重心位置が近接するように位置付けられ、
    　前記他の部位の固定位置は、前記仮想直線と直交すると共に前記組電池の重心位置を通る他の仮想直線上に近接するように位置付けられることを特徴とする移動体。     The moving body according to claim 9 or 10,
    In the assembled battery, both end portions in a direction perpendicular to the clamping surface of the clamping member are fixed to the fixing member via the elastic member,
    The fixing positions of other parts excluding both ends of the assembled battery are also fixed to other fixing members provided in the main body of the moving body via other elastic members,
    Both fixed positions with respect to the fixing member at both ends of the assembled battery are positioned so that the center of gravity position of the assembled battery is close to the virtual straight line passing through the both fixed positions,
    The fixed position of the other part is positioned so as to be close to another virtual straight line that is orthogonal to the virtual straight line and passes through the center of gravity of the assembled battery.
  12. 　請求項８ないし請求項１１のうち何れか一つに記載の移動体において、
    　前記移動体は、平面視においてその中央部に配設され乗員が搭乗するための乗車領域と、前記乗車領域の前側または後側の少なくとも何れか一方側に配設された左右一対の車輪とを備えた車両からなり、
    　前記平面視において、前記車両の重心位置と前記車輪の接地位置との間の前記乗車領域を除く領域であってこれら両位置を結ぶ仮想直線上に前記組電池の重心位置が近接するように前記組電池が位置付けられることを特徴とする移動体。     The mobile body according to any one of claims 8 to 11,
    The moving body includes a boarding area that is disposed in a central portion in plan view and on which at least one of a front side and a rear side of the boarding area is disposed, and a pair of left and right wheels disposed on the front side or the rear side of the boarding area. A vehicle equipped with
    In the plan view, the assembled battery is positioned so that the center of gravity of the battery pack is close to a virtual straight line connecting the two positions in a region excluding the riding region between the center of gravity of the vehicle and the ground contact position of the wheel. A moving body in which an assembled battery is positioned.
  13. 　単電池の厚さを計測する工程と、
    　傾斜した分割面で一対の間隔調整体片に分割された間隔調整体の前記分割面同士を当接した状態で前記分割面の傾斜する方向に沿って前記一対の間隔調整体片同士を相対変位させて、前記間隔調整体の厚さを前記単電池の厚さに対応した所定の厚さにする工程と、
    　前記間隔調整体を前記単電池の外周側に配置する工程と、
    前記単電池の外周側に配置した前記間隔調整体と前記単電池との組み合わせからなる複数の単電池モジュールを、平坦な挟持面を備えた複数の挟持部材の間にそれぞれ介在させ前記単電池と前記間隔調整体とを前記挟持部材で挟持した状態でその挟持を保持部材で保持する工程とを備える組電池の製造方法。     Measuring the thickness of the cell;
    Relative displacement of the pair of interval adjusting body pieces along the direction in which the dividing surface inclines while the dividing surfaces of the interval adjusting body divided into a pair of interval adjusting body pieces in contact with each other on the inclined dividing surface. Letting the thickness of the gap adjusting body be a predetermined thickness corresponding to the thickness of the unit cell,
    Arranging the spacing adjuster on the outer peripheral side of the unit cell;
    A plurality of unit cell modules formed by a combination of the interval adjusting body and the unit cell arranged on the outer peripheral side of the unit cell are interposed between a plurality of clamping members each having a flat clamping surface, and the unit cell And a step of holding the holding member with the holding member in a state where the gap adjusting member is held by the holding member.
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