WO2012173069A1 - Unité d'alimentation pour énergie électrique et véhicule équipé de l'unité d'alimentation - Google Patents

Unité d'alimentation pour énergie électrique et véhicule équipé de l'unité d'alimentation Download PDF

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Publication number
WO2012173069A1
WO2012173069A1 PCT/JP2012/064852 JP2012064852W WO2012173069A1 WO 2012173069 A1 WO2012173069 A1 WO 2012173069A1 JP 2012064852 W JP2012064852 W JP 2012064852W WO 2012173069 A1 WO2012173069 A1 WO 2012173069A1
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WO
WIPO (PCT)
Prior art keywords
outer peripheral
power supply
separator
supply device
peripheral wall
Prior art date
Application number
PCT/JP2012/064852
Other languages
English (en)
Japanese (ja)
Inventor
岡田　渉
Original Assignee
三洋電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三洋電機株式会社 filed Critical 三洋電機株式会社
Publication of WO2012173069A1 publication Critical patent/WO2012173069A1/fr

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Classifications

    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • 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
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • H01M50/293—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by the material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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 is mainly used for a power source of a motor for driving a vehicle such as a hybrid vehicle, a fuel cell vehicle, and an electric vehicle, or used as a power source for storing power of a solar cell, and such a power source device. It relates to a vehicle provided.
  • a structure in which a large number of rectangular batteries are stacked with separators interposed therebetween has been developed.
  • the power supply device with this structure insulates adjacent batteries by sandwiching a separator between square batteries.
  • the power supply device has a large number of prismatic batteries stacked and both ends thereof are sandwiched between end plates and fixed in an insulated state.
  • This power supply device is characterized in that the space efficiency of the battery can be increased and the charging capacity with respect to the entire volume can be increased.
  • a power supply device in which a large number of prismatic batteries are stacked by being insulated with separators has a problem in that if condensation occurs on the surface of the battery depending on the usage environment, the condensed water leaks or a short current flows to the adjacent prismatic battery. In particular, in a state where the relative humidity of the air is high, condensed water tends to adhere to the surface of the outer can of the square battery.
  • the power supply device in which the prismatic batteries are stacked does not connect all the prismatic batteries in parallel, but increases the output voltage by connecting all the prismatic batteries or a plurality of prismatic batteries in series. When adjacent prismatic batteries are connected in series, a potential difference is generated between the outer cans of the adjacent prismatic batteries.
  • An important object of the present invention is that by arranging a plurality of prismatic batteries in a stacked state, it is possible to effectively prevent short-circuiting and leakage of the prismatic batteries due to condensed water while increasing the charge / discharge capacity with respect to the volume.
  • An object of the present invention is to provide a power supply device for electric power that can effectively prevent intrusion and a vehicle including the power supply device.
  • the power supply device for electric power includes a battery block 3 in which a plurality of rectangular batteries 1 are arranged in a stacked state with a separator 2 interposed therebetween.
  • the separator 2 is sandwiched between the rectangular batteries 1 to insulate the adjacent rectangular batteries 1, and provided along the outer periphery of the main body 21 so as to cover the outer peripheral surface of the rectangular battery 1.
  • an outer peripheral wall 22 having an opposing edge 22A facing the adjacent separator 2.
  • the separator 2 includes a packing 6 made of a rubber-like elastic body that is disposed on the opposing edge 22A and that closely contacts the opposing edge 22A and the adjacent separator 2.
  • the above power supply device can effectively prevent short-circuiting or leakage of the rectangular battery due to condensed water while arranging a plurality of rectangular batteries in a stacked state to increase the charge / discharge capacity with respect to the volume.
  • the packing 6 can be disposed on the opposing edge 22 ⁇ / b> A of the outer peripheral wall 22 that covers both side surfaces and the bottom surface of the rectangular battery 1 in the outer peripheral wall 22. Since the above power supply device covers the both sides and bottom of the prismatic battery with the outer peripheral wall that is in close contact with the packing, it is possible to reliably prevent the condensed water of the prismatic battery from flowing out. For this reason, it is possible to reliably prevent the condensed water from flowing out to cause an electric leakage, and it is also possible to reliably prevent a short current from flowing by shorting the outer can of the adjacent rectangular battery.
  • the power supply device for power of the present invention is located on both sides of the upper surface of the battery block 3 in addition to the outer peripheral wall 22 that covers both side surfaces and the bottom surface of the rectangular battery 1, and the outer peripheral wall 22 that covers the upper surface of the rectangular battery 1.
  • the packing 6 can also be arranged on the opposite edge 22A.
  • the above power supply device can prevent dew condensation adhering to the surface of the rectangular battery from flowing out of the outer peripheral wall, and covers both sides of the upper surface of the battery block with a sealed outer peripheral wall. It is possible to more reliably prevent dust and moisture from entering the surface.
  • the outer peripheral wall 22 is formed on both surfaces of the main body portion 21, and the packing 6 is opposed to the opposite edge 22 ⁇ / b> A of one of the outer peripheral walls 22 among the outer peripheral walls 22 formed on both surfaces.
  • the opposing edge 22A and the opposing edge 22A of the separator 2 adjacent to each other can be brought into close contact with each other.
  • the power supply device described above can be arranged inside the outer peripheral wall in which square batteries are arranged at fixed positions on both sides of the separator and the square batteries are sealed with packing.
  • the adjacent separator is arrange
  • the outer peripheral wall of an adjacent separator can be arrange
  • the separator 2 has guide grooves 26 for guiding the packing 6 on the opposing edge 22A of the outer peripheral wall 22, and guides the packing 6 having an O-shaped cross section in the guide groove 26. be able to.
  • the above power supply apparatus can arrange
  • the packing 6 has fitting grooves 6b and 6c for guiding the opposing edge 22A of the outer peripheral wall 22 of the separator 2, and the outer peripheral wall of the separator 2 is inserted into the fitting grooves 6b and 6c. 22 opposing edges 22A can be fitted.
  • the above power supply device can arrange
  • the packing 6 can be bonded and fixed to the facing edge 22 ⁇ / b> A of the outer peripheral wall 22 of the separator 2.
  • the above power supply device can be fixed so as not to be displaced to the opposite edge by adhering packing. For this reason, the opposed edges can be stably and reliably adhered with the packing.
  • the separator 2 is made of plastic, and the packing 6 can be insert-molded and fixed. Since the power supply device described above can insert-mold the packing and place it at a fixed position, the packing can reliably and closely contact the opposing edges.
  • the power supply device for electric power according to the present invention can be provided with the packing 6 by applying uncured resin along the facing edge 22 ⁇ / b> A of the outer peripheral wall 22.
  • the above power supply device can seal the gap
  • the power supply device for electric power of the present invention can cool the prismatic battery 1 of the battery block 3 through the cooling plate 31 by connecting the cooling plate 31 to the surface of the battery block 3 in a thermally coupled state.
  • the power supply device described above can be used safely while preventing each of the square batteries from being cooled to a set temperature and preventing electric leakage due to condensation, electric shock, and short-circuit current.
  • the separator 2 can integrally form the main body 21 and the outer peripheral wall 22 with plastic.
  • the power supply device described above is characterized in that a separator that covers the battery block with an outer peripheral wall can be easily and easily produced at a low cost and in large quantities.
  • a plurality of rectangular batteries 1 in which battery blocks 3 are stacked on each other are sandwiched by a pair of end plates 4 from both ends in the stacking direction.
  • the plurality of prismatic batteries 1 can be fixed in the stacked state by the pair of end plates 4.
  • the above power supply apparatus can improve the adhesiveness of packing by fastening a battery block in a lamination direction with a bind bar.
  • the vehicle of the present invention can include the power supply device described above.
  • FIG. 1 It is a perspective view of the power supply device for electric power concerning one Example of this invention. It is a disassembled perspective view of the power supply device for electric power shown in FIG. It is a partially expanded exploded perspective view which shows the laminated structure of a square battery and a separator. It is an expanded sectional view which shows the laminated structure of a square battery and a separator. It is an expanded sectional view which shows the connection structure of packing and an outer peripheral wall. It is an expanded sectional view which shows another example of the packing connected with an outer peripheral wall. It is an expanded sectional view which shows another example of the packing connected with an outer peripheral wall. It is an expanded sectional view which shows another example of the packing connected with an outer peripheral wall. It is an expanded sectional view which shows another example of the packing connected with an outer peripheral wall.
  • the power supply device for a vehicle is mainly used in a power supply device that is mounted on an electric vehicle such as a hybrid car or an electric vehicle, supplies electric power to a travel motor of the vehicle, and travels the vehicle, or a solar battery. It is used for a power supply device that stores the electric power and outputs it at night or during daytime peak power.
  • 1 to 4 includes a battery block 3 in which a plurality of rectangular batteries 1 are arranged in a stacked state with a separator 2 interposed therebetween.
  • a plurality of prismatic batteries 1 stacked on each other are sandwiched by a pair of end plates 4 from both ends in the stacking direction.
  • the pair of end plates 4 are connected by a bind bar 5 to fix the plurality of prismatic batteries 1 in a stacked state with the pair of end plates 4.
  • the square battery 1 is a lithium ion secondary battery.
  • the prismatic battery is not specified as a lithium ion secondary battery, and any battery that can be charged, such as a nickel metal hydride battery, can also be used.
  • an electrode body in which positive and negative electrode plates are stacked is housed in an outer can 11 and filled with an electrolyte solution, which is hermetically sealed.
  • the outer can 11 has a predetermined thickness in which an upper surface, both side surfaces, and a bottom surface are square, and an opening on the upper surface is hermetically closed with a sealing plate 12.
  • the outer can 11 and the sealing plate 12 are made of conductive metal such as aluminum or aluminum alloy, and the outer can 11 is manufactured by deep drawing a metal plate.
  • the outer can 11 has a cylindrical shape that is thinner than the width and has opposite sides facing each other, and closes the bottom surface.
  • the sealing plate 12 has positive and negative electrode terminals 13 fixed to both ends via an insulating material 14.
  • the positive and negative electrode terminals 13 are connected to built-in positive and negative electrode plates.
  • the lithium ion secondary battery does not connect the outer can 11 to the electrode.
  • the outer can since the outer can is connected to the electrode plate through the electrolytic solution, it has an intermediate potential between the positive and negative electrode plates.
  • one electrode terminal can be connected to the outer can with a lead wire. This rectangular battery can be fixed to the sealing plate without insulating the electrode terminal connected to the outer can.
  • the sealing plate 12 is provided with an opening 16 of the safety valve 15.
  • the safety valve 15 opens when the internal pressure of the outer can 11 becomes higher than a set value, and prevents the outer can 11 from being damaged.
  • the safety valve 15 is opened, the internal gas is discharged from the opening 16 of the sealing plate 12 to the outside.
  • the opening 16 of the safety valve 15 is provided in the sealing plate 12. The rectangular battery 1 discharges gas upward from the opening 16 of the safety valve 15 to be opened.
  • the stacked rectangular batteries 1 are connected in series or in parallel with each other by connecting adjacent electrode terminals 13.
  • the square batteries connected in parallel do not generate a potential difference in the outer can.
  • the power supply device that increases the output increases the output voltage by connecting all the square batteries in series without connecting them in parallel.
  • the square battery 1 connected in series generates a potential difference with the outer can 11 of the adjacent square battery 1. Therefore, the power supply device stacks the adjacent rectangular batteries 1 in an insulated state with the separator 2 sandwiched between the outer cans 11 of the adjacent rectangular batteries 1.
  • the separator 2 sandwiched between the respective square batteries 1 is laminated by shutting off the adjacent square battery 1, so that the temperature of any one of the square batteries 1 becomes abnormally high and the thermal runaway occurs. Even if it becomes a state, there exists an effect
  • Separator 2 is made of plastic and is manufactured by injection molding.
  • the separator 2 is sandwiched between the rectangular batteries 1 to insulate the adjacent rectangular batteries 1, and the outer periphery that is provided along the outer periphery of the main body 21 and covers the outer peripheral surface of the rectangular battery 1.
  • a wall 22 The separator 2 is made of plastic and is formed by integrally molding the main body 21 and the outer peripheral wall 22.
  • the main body 21 is sandwiched between adjacent rectangular batteries 1 for insulation. Therefore, the main body portion 21 is a quadrangular plate shape whose outer shape is substantially equal to the outer shape of the prismatic battery 1, and is partially provided with a recess 23 without providing a through hole.
  • the separator 2 in FIG. 3 is provided with a plurality of rows of recesses 23 extending in the horizontal direction.
  • the separator 2 in this figure is provided with recesses 23 at different positions on both surfaces, and a deeper recess 23 is provided.
  • the concave portion 23 of the separator 2 stores condensed water generated on the surface of the rectangular battery 1 and does not leak outside. Further, the expansion of the outer can 11 can be absorbed.
  • the separator 2 in this figure is provided with an outer peripheral wall 22 so as to cover both sides of the upper surface of the prismatic battery 1.
  • the outer peripheral wall 22 is provided along the outer periphery of the main body 21 so as to cover the bottom surface, both side surfaces, and a part of the upper surface of the rectangular battery 1.
  • the outer peripheral wall 22 provided at this position covers both side surfaces and the bottom surface of the battery block 3 and further covers both side portions of the top surface.
  • the outer peripheral wall 22 provided along both side edges of the main body 21 closely contacts or approaches both side surfaces of the prismatic battery 1, and the outer peripheral wall 22 provided along the bottom surface closely contacts the bottom surface of the prismatic battery 1.
  • the outer peripheral wall 22 provided along the upper surface of the main body portion 21 is provided at a position that covers the insulating material 14 that is a fixing portion of the electrode terminal 13 fixed to the upper surface of the sealing plate 12.
  • the separator 2 is sandwiched between the prismatic batteries 1, and the outer peripheral wall 22 of the separator 2 covers the surface of the battery block 3 in a state where the prismatic battery 1 and the separator 2 are stacked. That is, the separator 2 that is sandwiched and stacked between the rectangular batteries 1 covers the surface of the battery block 3 that is the outer peripheral surface of the rectangular battery 1 with the outer peripheral wall 22. Further, a packing 6 made of a rubber-like elastic body is disposed on the opposing edge 22A of the outer peripheral wall 22 so that the outer peripheral wall 22 of the adjacent separator 2 covers the surface of the battery block 3 without a gap.
  • the packing 6 is sandwiched between the opposing edges 22A of the outer peripheral walls 22 of the adjacent separators 2 and closes the gap formed at the opposing edges 22A of the adjacent separators 2 with a watertight structure. That is, the packing 6 is in close contact with the opposing edge 22A without a gap, and the prismatic battery 1 is disposed inside the outer peripheral wall 22 to be in close contact.
  • the separator 2 connects the opposing edge 22A of the outer peripheral wall 22 to a fixed position with a fitting structure.
  • the separator 2 in FIG. 3 is provided with a fitting convex portion 24 on the opposite edge 22A of one outer peripheral wall 22 and a fitting concave portion 25 on the opposite edge 22A of the other outer peripheral wall 22 to fit the fitting convex portion 24. It is inserted into the recess 25 and connected to a fixed position.
  • the separator 2 in this figure is provided with pin-shaped fitting convex portions 24 at the corners of the outer peripheral wall 22 on one side, and a hole shape in which the pin-shaped fitting convex portions 24 are inserted into the corners on the other side. Insertion recess 25 is provided. In this separator 2, pin-shaped fitting convex portions 24 are inserted into hole-shaped fitting concave portions 25, and are connected to each other in a fixed position.
  • the separator 2 is provided with the packing 6 only on one opposing edge 22A, and the opposing edge 22A of the adjacent separator 2 is sealed without a gap through the packing 6. That is, as shown in FIG. 4, the separator 2 to which the outer peripheral walls 22 are connected to each other has the packing 6 sandwiched between the opposed edges 22 ⁇ / b> A facing each other, and the gap between the opposed edges 22 ⁇ / b> A is formed in the watertight structure via the packing 6. It is sealed.
  • the separator can also be provided with packings on both opposing edges, so that the packings are in close contact with each other, and the gap between the opposing edges can be sealed in the watertight structure.
  • a guide groove 26 for guiding the packing 6 ⁇ / b> A is provided along the opposing edge 22 ⁇ / b> A of the outer peripheral wall 22, and the packing 6 ⁇ / b> A having an O-shaped cross section is guided in the guide groove 26.
  • the packing 6A protrudes from the guide groove 26 without being compressed.
  • the packing 6 protruding from the guide groove 26 is pressed and elastically deformed by the opposing edge 22A or the packing 6A of the adjacent separator 2, and the clearance between the opposing edges 22A is sealed in a watertight structure by an elastic restoring force.
  • a general O-ring can also be used as packing with an O-shaped cross section.
  • a fitting groove 6b for guiding the opposing edge 22A of the outer peripheral wall 22 of the separator 2 is provided in the packing 6B, and the opposing edge 22A of the outer peripheral wall 22 of the separator 2 is fitted into the fitting groove 6b.
  • the fitting groove 6b has a width and a depth that prevent insertion of the opposing edge 22A.
  • FIG. 7 shows that the fitting groove 6c for guiding the facing edge 22A of the outer peripheral wall 22 of the separator 2 is provided on both surfaces of the packing 6C, and the facing edge 22A is fitted into one of the fitting grooves 6c. Is connected to the opposing edge 22A of one separator 2.
  • the fitting groove 6c has a shape in which the lateral width is increased toward the opening so that the opposing edge 22A of the separator 2 can be smoothly inserted, and the lateral width and depth that cannot be removed by inserting the opposing edge 22A of the separator 2 It is said. With this structure, the packing 6C can be easily and reliably connected to the facing edge 22A so as not to be displaced.
  • the packing 6C is connected to the facing edge 22A of one separator 2 disposed so as to be opposed, and the separator 2 is laminated, so that the facing edge 22A of the other separator 2 is fitted into the fitting groove 6c.
  • the gap between the opposing edges 22A of the adjacent separators 2 is sealed. Therefore, this structure is suitable for a structure in which the packing 6C is connected to one opposing edge 22A.
  • the packing 6 elastically protrudes from the facing edge 22A, is pressed against the facing edge 22A of the adjacent separator 2 and elastically deforms, and seals the gap between the facing edges 22A in a watertight structure.
  • the packing 6D in FIG. 8 has a shape in which the bonding surface of the facing edge 22A is planar and the opposite seal surface protrudes in an arch shape. This packing 6D is fixed only to one opposing edge 22A arranged opposite to each other, and the gap between the opposing edges 22A of the separator 2 is sealed in a watertight structure with one packing 6D, or arranged oppositely.
  • the two packings 6D are pressed against each other, and the gap between the opposing edges 22A is sealed in a watertight structure.
  • the packing 6E of FIG. 9 has a flat adhesive surface and two parallel rows of protrusions 6e on the seal surface. This packing 6E is fixed only to the facing edge 22A of one separator 2 disposed so as to be opposed, and is suitable for sealing the gap between the facing edges 22A in a watertight structure with one packing 6E.
  • the packing 6 can be fixed so as to protrude from the opposing edge 22A by insert molding in the step of molding the plastic separator 2.
  • the packing 6 ⁇ / b> F in FIG. 10 is provided with an undercut-like protruding portion 6 f embedded in the outer peripheral wall 22 so that it can be securely molded to the outer peripheral wall 22 by insert molding.
  • This packing 6 is fixed so that it does not come off at the exact position of the outer peripheral wall 22, and seals the gap between the opposing edges 22 ⁇ / b> A in a watertight structure.
  • the packing can be provided by applying an uncured resin along the opposing edge 22A of the outer peripheral wall 22.
  • This packing is a pre-process for assembling as a battery block, that is, in a state where the separators are not stacked, applied to the facing edges, or stacked as a battery block, and the gap between the facing edges of adjacent separators. To seal the gap between the opposing edges in a watertight structure.
  • the separator 2 is provided with one of the packings 6 shown in FIGS. 5 to 10 at the facing edge 22A of one separator 2 disposed opposite to the other separator, and a packing having a different structure is provided at the facing edge of the other separator. It is also possible to seal the gaps at the opposite edges by providing differently shaped packings.
  • the packing 6C having the shape shown in FIG. 7 is fixed to the facing edge 22A of one separator 2, and the packing 6A shown in FIGS. 5, 6, 8, and 10 is fixed to the facing edge 22A of the other separator 2.
  • 6B, 6D, 6F, and the packing 6 can be pressed together to seal the gap between the opposing edges 22A in a watertight structure.
  • the battery block 3 is laminated with the separator 2 sandwiched between the rectangular batteries 1, and both end surfaces thereof are pressed by the end plate 4, and the outer wall 22 is sealed by the packing 6.
  • the gap formed in the facing edge 22A is sealed in a watertight structure.
  • the packing 6 is elastically deformed by pressing the battery block 3 with the end plate 4 with a predetermined pressure or with a compression having a predetermined size, so that the opposing edge 22A of the adjacent separator 2 is watertight.
  • the structure is hermetically sealed.
  • the end plate 4 is made of hard plastic or made of metal such as aluminum or its alloy.
  • the end plate 4 has the same outer shape as the square battery 1 in order to sandwich the square battery 1 with a large area.
  • the square end plate 4 has the same size as the square battery 1 or slightly larger than the square battery 1.
  • the end plate 4 can be connected to the prismatic battery 1 so as not to be displaced by adopting a fitting structure on the laminated surface with the prismatic battery 1.
  • This fitting structure can be the same as the fitting structure between the rectangular battery 1 and the separator 2 described above. However, it is not always necessary to use the same structure as the prismatic battery fitting structure, and any shape that can fit the prismatic battery and the end plate without misalignment can be used.
  • the end of the bind bar 5 made of a metal plate is connected to the end plate 4. Both ends of the bind bar 5 are connected to the end plate 4 via set screws 19.
  • the end plate 4 that connects the bind bar 5 with a set screw 19 is provided with a female screw hole 4 a into which the set screw 19 is screwed.
  • the female screw hole 4 a is provided on the outer surface of the end plate 4, and connects the bind bar 5 by screwing a set screw 19 that passes through the bent portion 5 ⁇ / b> A of the bind bar 5.
  • the bind bar 5 shown in the figure is fixed to the end plate 4 with a set screw 19, but the end of the bind bar is bent inward to connect to the end plate, or the end is crimped to the end plate. It can also be linked.
  • a bind bar 5 is connected to an upper end and a lower end of an end plate 4, and a pair of end plates 4 are fixed by two bind bars 5.
  • both ends of the bind bar 5 are fixed to the end plate 4.
  • the end plate 4 that fixes the end of the bind bar 5 with the set screw 19 has a female screw hole 4 a at the connection position of the bind bar 5.
  • the bind bar 5 is manufactured by processing a metal plate having a predetermined thickness into a predetermined width.
  • the bind bar 5 fixes both ends to the end plate 4 and connects the pair of end plates 4 to hold the prismatic battery 1 in a compressed state.
  • the bind bar 5 fixes the pair of end plates 4 to a predetermined size, and fixes the prismatic battery 1 stacked between them to a predetermined compressed state.
  • the bind bar 5 is manufactured by processing a metal plate having a strength that does not extend due to the expansion pressure of the square battery 1, for example, a stainless steel plate such as SUS304 or a metal plate such as a steel plate into a width and thickness having sufficient strength.
  • the bind bar can also process the metal plate into a groove shape or an L shape in cross section. Since the binding bar 5 having this shape can increase the bending strength, it has a feature that the rectangular batteries to be stacked can be firmly fixed to a predetermined compression state while narrowing the width.
  • the bind bar 5 is provided with a bent portion 5A at the end, and the bent portion 5A is fixed to the end plate 4.
  • the bent portion 5A is provided with a through hole of a set screw 19 and is fixed to the end plate 4 via a set screw 19 inserted therein.
  • a cooling plate 31 is connected to the lower surface of the battery block 3 in a thermally coupled state, and the prismatic battery 1 is forcibly cooled by the cooling plate 31.
  • the cooling plate 31 is connected to the lower surface of the outer peripheral wall 22 that covers the lower surface of the battery block 3 through a heat conductive sheet 32 that is deformed by pressing or through a heat conductive paste.
  • the heat conductive sheet 32 is compressed and deformed between the outer peripheral wall 22 covering the bottom surface of the battery block 3 and the cooling plate 31, and closely contacts the cooling plate 31 in a surface contact state. Further, the power supply device having this structure is coated with an insulating heat conductive paste such as silicon oil on the surface of the heat conductive sheet 32 so that the surface contact between the outer peripheral wall 22 and the cooling plate 31 can be reliably and stably brought into surface contact. It can also be brought into close contact with the state.
  • an insulating heat conductive paste such as silicon oil
  • the above power supply device connects each square battery 1 to the cooling plate 31 in a thermally coupled state via the heat conductive sheet 32 or the heat conductive paste, and cools each square battery 1 with the cooling plate 31.
  • the cooling plate 31 is provided with a refrigerant path 33 for circulating the refrigerant therein.
  • the refrigerant path 33 is supplied with a refrigerant such as Freon or carbon dioxide in a liquid state, vaporizes the refrigerant inside, and cools the cooling plate 31 with heat of vaporization.
  • the cooling plate 31 connects the refrigerant path 33 to the cooling mechanism 30.
  • the cooling mechanism 30 includes a compressor 36 that pressurizes the gaseous refrigerant vaporized in the refrigerant path 33, a cooling heat exchanger 37 that cools and liquefies the refrigerant compressed by the compressor 36, and the cooling heat exchanger 37. And an expansion valve 38 for supplying the refrigerant liquefied in the refrigerant path 33.
  • the liquid refrigerant supplied via the expansion valve 38 is vaporized in the refrigerant path 33 in the cooling plate 31, cools the cooling plate 31 with heat of vaporization, and is discharged to the cooling mechanism 30. Therefore, the refrigerant circulates through the refrigerant path 33 of the cooling plate 31 and the cooling mechanism 30 to cool the cooling plate 31.
  • the cooling mechanism 30 cools the cooling plate 31 to a low temperature by the heat of vaporization of the refrigerant, but the cooling plate can also be cooled regardless of the heat of vaporization.
  • the cooling plate supplies a refrigerant such as brine cooled to a low temperature to the refrigerant path, and cools the cooling plate directly with the low-temperature refrigerant instead of the heat of vaporization of the refrigerant.
  • the cooling mechanism 30 controls the cooling state of the cooling plate 31 with a temperature sensor (not shown) that detects the temperature of the prismatic battery 1. That is, when the temperature of the prismatic battery 1 becomes higher than the preset cooling start temperature, the coolant is supplied to the cooling plate 31 to cool, and when the prismatic battery 1 becomes lower than the cooling stop temperature, the cooling plate 31 is supplied with the cooling plate 31. The supply of the refrigerant is stopped, and the rectangular battery 1 is controlled to a preset temperature range.
  • the above power supply devices can be used as in-vehicle power supplies.
  • a vehicle equipped with a power supply device an electric vehicle such as a hybrid vehicle or a plug-in hybrid vehicle that runs with both an engine and a motor, or an electric vehicle that runs only with a motor can be used, and is used as a power source for these vehicles. .
  • FIG. 11 shows an example in which a power supply device is mounted on a hybrid vehicle that runs with both an engine and a motor.
  • a vehicle HV equipped with the power supply device 90 shown in this figure includes an engine 96 for traveling the vehicle HV and a motor 93 for traveling, a power supply device 90 for supplying power to the motor 93, and power generation for charging a battery of the power supply device 90.
  • the power supply device 90 is connected to the motor 93 and the generator 94 via the DC / AC inverter 95.
  • the vehicle HV travels by both the motor 93 and the engine 96 while charging / discharging the battery of the power supply device 90.
  • the motor 93 is driven to drive the vehicle when the engine efficiency is low, for example, during acceleration or low-speed driving.
  • the motor 93 is driven by power supplied from the power supply device 90.
  • the generator 94 is driven by the engine 96 or is driven by regenerative braking when the vehicle is braked, and charges the battery of the power supply device 90.
  • FIG. 12 shows an example in which a power supply device is mounted on an electric vehicle that runs only with a motor.
  • a vehicle EV equipped with the power supply device 90 shown in this figure includes a motor 93 for traveling the vehicle EV, a power supply device 90 that supplies power to the motor 93, and a generator that charges the battery of the power supply device 90. 94.
  • the power supply device 90 is connected to the motor 93 and the generator 94 via the DC / AC inverter 95.
  • the motor 93 is driven by power supplied from the power supply device 90.
  • the generator 94 is driven by energy when regeneratively braking the vehicle EV, and charges the battery of the power supply device 90.
  • this power supply apparatus can be used not only as a power source for a moving body but also as a stationary power storage facility.
  • a power source for home and factory use a power supply system that is charged with sunlight or midnight power and discharged when necessary, or a streetlight power supply that charges sunlight during the day and discharges at night, or during a power outage It can also be used as a backup power source for driving signals.
  • FIG. The power supply device 80 shown in this figure forms a battery unit 82 by connecting a plurality of battery packs 81 in a unit shape. In each battery pack 81, a plurality of rectangular batteries 1 are connected in series and / or in parallel.
  • Each battery pack 81 is controlled by a power controller 84.
  • the power supply device 80 drives the load LD after charging the battery unit 82 with the charging power supply CP. For this reason, the power supply device 80 has a charge mode and a discharge mode.
  • the load LD and the charging power source CP are connected to the power supply device 80 via the discharging switch DS and the charging switch CS, respectively.
  • ON / OFF of the discharge switch DS and the charge switch CS is switched by the power supply controller 84 of the power supply device 80.
  • the power controller 84 switches the charging switch CS to ON and the discharging switch DS to OFF to permit charging from the charging power supply CP to the power supply device 80.
  • the power controller 84 turns off the charging switch CS and turns on the discharging switch DS to discharge.
  • the mode is switched to permit discharge from the power supply device 80 to the load LD.
  • the charge switch CS can be turned on and the discharge switch DS can be turned on to supply power to the load LD and charge the power supply device 80 at the same time.
  • the load LD driven by the power supply device 80 is connected to the power supply device 80 via the discharge switch DS.
  • the power supply controller 84 switches the discharge switch DS to ON, connects to the load LD, and drives the load LD with the power from the power supply device 80.
  • the discharge switch DS a switching element such as an FET can be used. ON / OFF of the discharge switch DS is controlled by the power supply controller 84 of the power supply device 80.
  • the power controller 84 also includes a communication interface for communicating with external devices. In the example of FIG. 13, the host device HT is connected according to an existing communication protocol such as UART or RS-232C. Further, if necessary, a user interface for the user to operate the power supply system can be provided.
  • Each battery pack 81 includes a signal terminal and a power supply terminal.
  • the signal terminals include a pack input / output terminal DI, a pack abnormality output terminal DA, and a pack connection terminal DO.
  • the pack input / output terminal DI is a terminal for inputting / outputting signals from other pack batteries and the power supply controller 84
  • the pack connection terminal DO is for inputting / outputting signals to / from other pack batteries which are child packs.
  • the pack abnormality output terminal DA is a terminal for outputting the abnormality of the battery pack to the outside.
  • the power supply terminal is a terminal for connecting the battery packs 81 in series and in parallel.
  • the battery units 82 are connected to the output line OL via the parallel connection switch 85 and are connected in parallel to each other.
  • the power supply device can be suitably used as a power supply device for a plug-in hybrid electric vehicle, a hybrid electric vehicle, an electric vehicle or the like that can switch between the EV traveling mode and the HEV traveling mode.
  • a backup power supply device that can be mounted on a rack of a computer server, a backup power supply device for a wireless base station such as a mobile phone, a power storage device for home use and a factory, a power supply for a street light, etc.
  • it can be used as appropriate for applications such as a backup power source such as a traffic light.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

L'invention a pour but d'agencer une pluralité de batteries rectangulaires en une pile pour augmenter la capacité de charge et de décharge par rapport au volume, tout en prévenant efficacement la mise en court-circuit et la fuite des batteries rectangulaires dues à la condensation de l'eau et en prévenant en outre efficacement la contamination par l'eau et par la poussière. A cet effet, selon l'invention une unité d'alimentation pour alimentation électrique comprend un bloc de batteries [3] dans lequel plusieurs batteries rectangulaires [1] sont disposées en une pile avec un séparateur [3] interposé entre les batteries rectangulaires [1]. Le séparateur [2] comprend une unité principale [21] interposée entre deux batteries rectangulaires adjacentes [1] pour isoler les batteries rectangulaires [1] et une paroi périphérique extérieure [22] disposée le long de la périphérie extérieure de l'unité principale [21] pour couvrir la surface périphérique extérieure d'une batterie rectangulaire [1], la paroi périphérique extérieure [22] ayant un bord de face [22A] qui fait face au séparateur adjacent [2]. Le séparateur [2] comporte aussi un bourrage [6] qui est disposé dans le bord de face [22A] et qui comprend un corps élastique du type du caoutchouc qui adhère au séparateur [2] adjacent au bord de face [22A].
PCT/JP2012/064852 2011-06-15 2012-06-09 Unité d'alimentation pour énergie électrique et véhicule équipé de l'unité d'alimentation WO2012173069A1 (fr)

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JP2011133729 2011-06-15

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JP2014222593A (ja) * 2013-05-13 2014-11-27 プライムアースＥｖエナジー株式会社 組電池
WO2015145927A1 (fr) * 2014-03-25 2015-10-01 三洋電機株式会社 Système de batterie
JP2016054108A (ja) * 2014-09-04 2016-04-14 株式会社Ｇｓユアサ 蓄電装置
JP2016152072A (ja) * 2015-02-16 2016-08-22 株式会社豊田自動織機 電池モジュール及び電池モジュールの製造方法
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JP2011014321A (ja) * 2009-06-30 2011-01-20 Sanyo Electric Co Ltd バッテリシステム
JP2011100699A (ja) * 2009-11-09 2011-05-19 Sanyo Electric Co Ltd 車両用電源装置及びこれを備える車両並びに車両用電源装置の製造方法

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JP2010198818A (ja) * 2009-02-24 2010-09-09 Gs Yuasa Corp 電気化学デバイス及び積層型電気化学デバイス
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Publication number Priority date Publication date Assignee Title
JP2014222593A (ja) * 2013-05-13 2014-11-27 プライムアースＥｖエナジー株式会社 組電池
WO2015145927A1 (fr) * 2014-03-25 2015-10-01 三洋電機株式会社 Système de batterie
CN105794017A (zh) * 2014-03-25 2016-07-20 三洋电机株式会社 电池系统
JPWO2015145927A1 (ja) * 2014-03-25 2017-04-13 三洋電機株式会社 バッテリシステム
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DE102014217511B4 (de) 2014-09-02 2024-05-16 Robert Bosch Gmbh Batteriezellenmodul mit einer Anordnung zum Schutz gegen Feuchtigkeit
JP2016054108A (ja) * 2014-09-04 2016-04-14 株式会社Ｇｓユアサ 蓄電装置
JP2016152072A (ja) * 2015-02-16 2016-08-22 株式会社豊田自動織機 電池モジュール及び電池モジュールの製造方法
WO2016132801A1 (fr) * 2015-02-16 2016-08-25 株式会社豊田自動織機 Module de batterie et procédé de fabrication de module de batterie
US10388934B2 (en) 2015-02-16 2019-08-20 Kabushiki Kaisha Toyota Jidoshokki Battery module and method for manufacturing battery module

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