WO2017169728A1 - Battery pack - Google Patents
Battery pack Download PDFInfo
- Publication number
- WO2017169728A1 WO2017169728A1 PCT/JP2017/010119 JP2017010119W WO2017169728A1 WO 2017169728 A1 WO2017169728 A1 WO 2017169728A1 JP 2017010119 W JP2017010119 W JP 2017010119W WO 2017169728 A1 WO2017169728 A1 WO 2017169728A1
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- WO
- WIPO (PCT)
- Prior art keywords
- case
- battery
- battery pack
- battery cell
- bus bar
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- 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
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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
- H01M10/627—Stationary installations, e.g. power plant buffering or backup power supplies
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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
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/643—Cylindrical cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6562—Gases with free flow by convection only
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
- H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
- H01M50/227—Organic material
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/271—Lids or covers for the racks or secondary casings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present invention relates to a battery pack in which a plurality of battery cells are stored in a fixed position of a holder case, and more particularly to a battery pack in which a middle portion of a battery cell is stored in a state of being exposed inside the holder case.
- a device including a battery pack in which battery cells such as a lithium ion secondary battery and a nickel hydride secondary battery that can be used repeatedly are connected in multiple series and in parallel is employed.
- battery cells such as a lithium ion secondary battery and a nickel hydride secondary battery that can be used repeatedly are connected in multiple series and in parallel.
- lithium ion secondary batteries are frequently used in recent years because they are lightweight but have high electromotive force and high energy density.
- the battery pack can increase the output voltage by connecting a large number of battery cells in series, and can increase the output current by connecting them in parallel.
- the number of battery cells to be stored tends to increase.
- battery cells generate heat when charged and discharged with a large current, it is also important to ensure heat dissipation.
- This battery pack includes a battery holder formed with a large number of cylindrical battery storage portions in order to store a large number of battery cells.
- This battery holder is divided into two in the middle of the battery cell, and has a structure in which the battery cell is sandwiched and held from both sides by a pair of divided cases.
- the above battery holder is generally made of resin from the standpoint of insulation and the like, and when each of these two divided cases is injection-molded with a mold, the number of cylindrical battery storage portions As the value increases, the frictional resistance during demolding increases. For this reason, even if it was going to comprise the battery holder which accommodates many battery cells, there existed a problem that metal mold
- a battery pack having a structure in which only the both ends are accommodated in the battery accommodating portion and the intermediate portion of the battery cell is exposed without accommodating the entire cylindrical battery cell in the battery accommodating portion.
- a cylindrical battery storage portion that stores an end portion of a battery cell is provided on the inner surface of a pair of split cases formed by dividing the battery holder into two. Since this battery holder inserts only the edge part of a battery cell in a battery accommodating part, the intermediate part of a battery cell can be exposed and the heat dissipation characteristic of this part can be improved.
- JP 2007-317579 A International Publication Number WO2012 / 132135
- the battery holder 92 that holds both ends of the battery cell in the battery storage portion has one end of the battery cell 91 inserted into the battery storage portion 93 of one split case 92X (lower case in the figure).
- the other end of the battery cell 91 is inserted into the battery housing portion 93 of the other split case 92Y (upper case in the figure) and is sandwiched from both sides.
- the position of the other end of the battery cell 91 having one end inserted into the battery housing portion 93 of one split case 92X moves back and forth and left and right, the other end of the battery cell 91 is moved to the other split case 92Y. It is difficult to promptly guide the battery storage unit 93.
- the battery holder can be easily assembled by making it easier to specify the orientation of the battery to be inserted when the depth of the cylindrical portion which is the battery housing portion formed in the pair of cases is increased, but the mold becomes complicated. This makes it difficult to remove the mold and increases the manufacturing cost. Furthermore, the area of the battery cell exposed inside the battery holder is also reduced, and the heat dissipation characteristics are deteriorated. On the other hand, if the battery housing is shallow, the mold structure is simplified and the mold can be easily removed. As a result, the manufacturing cost can be reduced, and the area of the battery cell exposed inside the battery holder can be increased. It becomes difficult to hold the product so as to be sandwiched between the two, and the efficiency of the assembly work is reduced.
- the battery holder is shallow and the battery holder and the mold have a simple structure, and the battery holder of the battery holder made up of a pair of cases is quickly guided to both ends of the battery cell to make many Nipping the battery cell from both sides is a contradictory property, and both cannot be satisfied at the same time.
- the present invention has been made in view of such a background, and one of its purposes is to make the holder case simple, simplify the structure of the mold, make it easy to remove the mold, and reduce the manufacturing cost. It is also possible to provide a battery pack in which a large number of battery cells are arranged while being positioned between a pair of cases, and both ends of the battery cells can be easily held and sandwiched from both sides by a pair of cases. Furthermore, an object of the present invention is to provide a battery pack capable of improving heat dissipation characteristics by exposing a large area of the middle part of the battery cell in the holder case while holding both ends of the battery cell with the holder case.
- a plurality of battery cells 1 formed by closing the opening of a cylindrical, bottomed outer can 11 with a sealing plate 12.
- a holder case 2 for holding the plurality of battery cells 1 in a parallel posture and holding the electrode terminals 13 provided at both ends of each battery cell 1 on the same surface.
- the holder case 2 includes a first case 2X provided with a plurality of holding portions 21 for inserting and holding one end portion of the battery cell 1, and a holding portion for inserting and holding the other end portion of the battery cell 1.
- the second case 2Y is provided with a plurality of 21 inside, and a plurality of battery cells 1 are sandwiched from both sides in the longitudinal direction by the first case 2X and the second case 2Y to hold both ends of the plurality of battery cells 1. While being held by the part 21, the intermediate part of the plurality of battery cells 1 is exposed in the holder case 2. Further, the battery pack is disposed between the holding portion 21 of the first case 2X and the holding portion 21 of the second case 2Y, and a positioning spacer 3 for holding and positioning the intermediate portions of the plurality of battery cells 1 is provided. I have.
- both end portions of the battery cells are positioned in the first case and the second case.
- the battery cell can be clamped from both sides in the longitudinal direction while being guided to the holding portion. For this reason, the both ends of the plurality of battery cells can be easily and easily guided to the holding portions of the first case and the second case, and the assembling work can be efficiently performed.
- the holding portions formed in the first case and the second case can be formed shallowly, Accordingly, the first case and the second case can be manufactured easily and easily at a low cost by using a mold having a simple structure.
- the positioning spacer 3 is a perforated plate which penetrates the battery cell 1 and opens a plurality of insertion holes 3A for holding the intermediate part of the battery cell 1,
- the battery cell 1 can be inserted into the insertion hole 3A and positioned.
- the battery cell can be inserted into the insertion hole opened in the perforated plate while the positioning spacer has a simple structure, so that the plurality of battery cells can be reliably positioned.
- the holder case 2 can be formed of a thermosetting resin.
- the first case and the second case can be easily manufactured using a thermosetting resin by making the shapes simple.
- excellent heat resistance and chemical resistance can be realized by molding the holder case with a thermosetting resin.
- the depth of the holding portion 21 of the first case 2X and the second case 2Y is 25% or less of the total length of the battery cell 1, and the thickness of the positioning spacer 3 is increased. Can be 10% or less of the total length of the battery cell 1.
- the depth of the holding portion of the first case and the second case is reduced, and the thickness of the positioning spacer is reduced, so that the area where the battery cell is exposed in the holder case is widened and effective.
- the depth of the holding part of the first case and the second case is set to 25% or less of the total length of the battery cell, and the thickness of the positioning spacer is set to 10% or less of the total length of the battery cell.
- An area of 40% or more of the surface can be exposed to effectively dissipate heat.
- the first case 2X and the second case 2Y are provided around the end plate portion 22 and the end plate portion 22 provided with a plurality of holding portions 21 on the inner surface.
- the outer shape of the whole wall is substantially rectangular, and the opposing opening edges of the peripheral wall 23 are connected to each other to form a hollow portion 20 that exposes the intermediate portion of the battery cell 1 inside.
- the positioning spacer 3 can be sandwiched between the peripheral walls 23 of the first case 2X and the second case 2Y which are opposed to each other, and can be arranged at a fixed position.
- the first case and the second case are configured by an end surface plate portion provided with a plurality of holding portions on the inner surface and a peripheral wall formed along the periphery of the end surface plate portion, and the outer shape is substantially rectangular.
- the outer shape is substantially rectangular.
- At least one of the first case 2X and the second case 2Y is provided with a step recess 23A for fitting the positioning spacer 3 along the opening edge of the peripheral wall 23.
- the positioning spacer can be placed at a fixed position by fitting the positioning spacer to the stepped recess provided along the opening edge of at least one of the first case or the second case.
- the battery pack of the seventh embodiment it is possible to further include a pair of bus bar plates 4 arranged on the outer sides of the end face plate portions 22 of the first case 2X and the second case 2Y.
- a plurality of battery cells 1 are arranged in the same direction and accommodated in a holder case 2, and the first case 2 ⁇ / b> X and the second case 2 ⁇ / b> Y have a connection hole 24 penetrating the bottom surface of the holding portion 21 and an end plate portion 22.
- the electrode terminals 13 of the battery cells 1 are exposed through the connection holes 24, and the electrode terminals 13 are connected to the bus bar plate 4 so that the plurality of battery cells 1 can be connected in parallel.
- a plurality of battery cells are arranged in the same direction and stored in the holder case, and the battery terminal electrode terminals inserted into the holding parts of the first case and the second case are connected to the connection holes opened in the end face plate part.
- a plurality of battery cells can be easily connected in parallel by exposing and connecting this electrode terminal to a bus bar plate arranged outside the end face plate portion.
- this battery pack arranges a pair of bus bar plates outside the end plate portions of the first case and the second case, it effectively dissipates heat conducted from both ends of the battery cells via the bus bar plate. it can.
- the pair of bus bar plates 4 are arranged on the outer sides of the first bus bar plate 4X and the second case 2Y arranged outside the first case 2X.
- 2 bus bar plates 4Y each bus bar plate 4 is provided with bent pieces 41, 43 bent along the peripheral wall 23 from the outer peripheral edge of the end face plate portion 22, and the tip ends of the bent pieces 41, 43 are Furthermore, the external connection parts 42 and 44 can be provided by bending.
- the first bus bar plate 4X has a bent piece 41 arranged on the first surface 2A which is the side surface of the holder case 2 having a rectangular outer shape, and the second bus bar plate 4Y is a side surface facing the first surface 2A.
- the bent piece 43 can be arranged on the third surface 2C.
- the positive and negative external connection portions are arranged on the opposing side surfaces of the holder case, so that the battery pack can be safely connected while preventing harmful effects such as a short circuit.
- the holder case 2 is fitted to guide the bent piece 41 to the first surface 2A on which the bent piece 41 of the first bus bar plate 4X is arranged.
- a fitting recess 27 for guiding the bent piece 43 is provided on the third surface 2C on which the bent piece 43 of the second bus bar plate 4Y is disposed, and the fitting concave portion 27 is externally provided.
- a stepped surface 28 on which the connecting portion 44 is disposed can be formed.
- the bent pieces arranged on the first surface and the third surface of the holder case can be reliably externally connected while being guided to the fitting recesses and arranged at a fixed position.
- the bent piece which is a metal piece, is prevented from projecting to the surface side of the holder case, effectively preventing problems such as short circuits. Can be prevented.
- the fitting recess provided on the third surface of the holder case is provided with a stepped surface on which the external connection portion of the second bus bar plate is arranged, the external connection portion of the second bus bar plate is provided on this surface. Secure external connection.
- the external connection portion of the first bus bar plate of the adjacent battery pack is provided on the upper surface of the external connection portion of the second bus bar plate arranged on the step surface. Arranged in a stacked state and can be securely connected.
- FIG. 2 is a sectional view taken along line II-II of the battery pack shown in FIG.
- FIG. 3 is a cross-sectional view of the battery pack shown in FIG. 1 taken along the line III-III. It is a disassembled perspective view of the battery pack shown in FIG. It is the disassembled perspective view which looked at the battery pack shown in FIG. 4 from the lower side. It is a disassembled perspective view of the holder case of the battery pack shown in FIG. 7A to 7D are schematic cross-sectional views showing an assembly process of the battery pack shown in FIG.
- FIG. 3 is a partially enlarged exploded perspective view of a first bus bar plate.
- each element constituting the present invention may be configured such that a plurality of elements are configured by the same member and the plurality of elements are shared by one member. It can also be realized by sharing.
- the battery pack of the present invention can be used as a power source for a stationary power storage facility.
- a power storage device for a power plant, power generation facility, factory, or public facility the battery pack is charged by solar power generation or wind power generation, or at midnight. It can be applied to a power storage device that is charged with electric power and discharged when necessary.
- a plurality of battery packs can be connected and connected in series and / or in parallel to increase the output to constitute a power storage device.
- the power storage device can control charging / discharging of each battery pack by connecting a plurality of battery packs in a daisy chain and connecting a controller to the terminal end.
- the battery pack of the present invention is not limited to such a power source for power storage facilities, but is also used for a street light power source that charges sunlight during the day and discharges it at night, a traffic light that is driven during a power failure, and a computer server Needless to say, the present invention can also be used for a backup power supply for a wireless base station such as a mobile phone or a mobile phone.
- FIG. 1 is a perspective view of the battery pack
- FIG. 2 is a cross-sectional view taken along line II-II of the battery pack of FIG. 1
- FIG. 3 is a cross-sectional view taken along line III-III of FIG. 1
- FIG. 5 is an exploded perspective view of the battery pack of FIG. 4 viewed from below
- FIG. 6 is an exploded perspective view of the holder case.
- the battery pack 10 shown in these drawings includes a plurality of battery cells 1 in which openings of a cylindrical and bottomed outer can 11 are closed with a sealing plate 12, and a plurality of battery cells 11 are parallel to each other. And a holder case 2 that holds the electrode terminals 13 provided at both ends of each battery cell 1 in a posture to be arranged on the same surface.
- the holder case 2 includes a first case 2X provided with a plurality of holding portions 21 for inserting and holding one end portion of the battery cell 1, and a holding portion for inserting and holding the other end portion of the battery cell 1. 2nd case 2Y which provided multiple 21 inside.
- the holder case 2 includes a first case 2X and a second case 2Y sandwiching the plurality of battery cells 1 from both sides in the longitudinal direction, holding both end portions of the plurality of battery cells 1 by the holding portions 21, and holding an intermediate portion.
- the battery pack 10 includes a positioning spacer 3 that is disposed between the holding portion 21 of the first case 2X and the holding portion 21 of the second case 2Y and holds the middle portion of the battery cell 1 while positioning. ing.
- the battery cell 1 is a lithium ion secondary battery that can be charged and discharged.
- the battery cell is not limited to a lithium ion secondary battery, and may be a battery that can be charged and discharged, such as a nickel metal hydride battery or a nickel cadmium battery.
- a cylindrical battery is used in the battery pack of the present embodiment.
- the present invention is not limited to this, and a square battery or a flat battery may be used.
- the battery cell 1 stores an electrode body (not shown) in a cylindrical and bottomed outer can 11 and is filled with an electrolyte solution to open the outer can 11.
- the part is closed with a sealing plate 12.
- the battery cell 1 uses the bottom surface of the outer can 11 as both end surfaces and the sealing plate 12 closed in an insulating state at the opening of the outer can 11 as positive and negative electrode terminals 13.
- the battery cell 1 shown in FIG. 6 has a metal plate formed in a disk shape having a central recess without providing a convex electrode on the sealing plate 12 while increasing the strength by using the outer can 11 as iron or an iron alloy. Is used.
- a sealing plate 12 aluminum or an aluminum alloy can be used.
- the battery cell 1 having this structure can reduce the strength of the aluminum sealing plate 12 relative to the iron outer can 11. For this reason, when problems such as abnormally high internal pressure occur due to overcharge or internal short circuit, etc., the aluminum sealing plate 12 is opened preferentially, and the internal gas etc. is quickly released to the outside. It can be discharged to guarantee safety.
- the battery cell may have a structure in which a convex electrode is provided on the sealing plate. In this battery cell, a safety valve is provided on the sealing plate or the convex electrode, and when the internal pressure of the battery rises, the safety valve can be opened to exhaust the internal gas from the exhaust port.
- the holder case 2 shown in FIGS. 2, 3, and 6 accommodates a plurality of battery cells 1 in a parallel posture.
- the plurality of battery cells 1 are arranged in the same direction. That is, in the figure, the bottom end of the outer can 11 is positioned downward, and the end closed by the sealing plate 12 is positioned upward.
- the holder case 2 holds the electrode terminals 13 provided at both ends of each battery cell 1 at a fixed position in a posture where they are arranged on the same surface.
- the holder case 2 is divided into a first case 2X and a second case 2Y in the longitudinal direction of the battery cell 1 and in the middle of the thickness direction.
- the first case 2X and the second case 2Y are each provided with a holding portion 21 for inserting and holding the end of the cylindrical battery cell 1 individually.
- the first case 2 ⁇ / b> X and the second case 2 ⁇ / b> Y include an end surface plate portion 22 provided with a plurality of holding portions 21 into which end portions of the battery cell 1 are inserted on the inner surface, and a peripheral wall formed along the periphery of the end surface plate portion 22. 23.
- the first case 2 ⁇ / b> X and the second case 2 ⁇ / b> Y have an overall outer shape of a substantially rectangular shape, and the opposing opening edges of the peripheral wall 23 are connected to each other.
- maintenance part 21 is formed in the shape which can insert and hold
- the holding portion 21 shown in the figure has a shape that follows the outer peripheral surface of the battery cell 1 and preferably has a shape that allows the outer peripheral surface of the battery cell 1 to approach or contact the outer peripheral surface of the battery cell 1 without a gap.
- a plurality of recesses are provided inside the end face plate portion 22.
- the plurality of holding portions 21 are formed so that the battery cell 1 inserted therein can be held in a substantially vertical posture with respect to the end face plate portion 22.
- the holder case 2 forms a holding portion 21 having an inner cylindrical shape so that the cylindrical battery cell 1 can be accommodated.
- these holding portions 21 join the first case 2 ⁇ / b> X and the second case 2 ⁇ / b> Y so as to sandwich the battery cell 1 from both sides, thereby connecting the plurality of battery cells 1.
- the holder case 2 can be stored in a fixed position.
- the holding portion is a cylindrical portion having an inner shape that follows the outer shape of the battery cell, and a plurality of the cylindrical portions can be arranged.
- the plurality of holding portions 21 are provided in a predetermined arrangement inside the first case 2X and the second case 2Y, respectively.
- the number of holding parts 21 formed in the holder case 2 is determined by the number of battery cells 1 to be stored.
- the holder case 2 is provided with 66 holding portions 21 in the first case 2X and the second case 2Y, respectively.
- the holding portions 21 of the holder case 2 shown in FIG. 6 are formed in 9 rows from the second surface 2B to the fourth surface 2D, and in each row, the holding portions 21 face the first surface 2A to the third surface 2C.
- a total of 66 holding portions 21 are provided by arranging 7 to 8 pieces in a straight line at equal intervals. Therefore, the holder case 2 has a structure that can accommodate up to 66 battery cells 1.
- the holding portions 21 formed over multiple rows are arranged so that the adjacent battery cells 1 are located between adjacent battery cells 1 in one row, that is, in a staggered state.
- the battery cell 1 can be arranged in a space-saving manner
- the depth of the holding portion 21 formed in the concave shape is 5 to 30%, preferably 10 to 25%, more preferably 15 to 25% of the length of the battery cell 1. Furthermore, by joining the first case 2X and the second case 2Y so as to sandwich the battery cell 1 from both sides, the two holding portions 21 store and hold both ends of the battery cell 1, and the battery cell. A hollow portion 20 is formed in the holder case 2 so that the intermediate portion of the battery cell is exposed in the holder case 2. Thereby, since each battery cell which the intermediate part of the battery cell 1 adjoins can be spaced apart, the cooling effect of a battery cell can be improved.
- a connection hole 24 penetrating the bottom surface of the holding portion 21 is opened in the end face plate portion 22.
- the end surface plate portion 22 exposes the electrode terminal 13 from the connection hole 24 opened on the outer surface in a state where the end portion of the battery cell 1 is inserted into the holding portion 21 provided inside.
- the connection hole 24 is made smaller than the outer shape of the outer can 11 of the battery cell 1 inserted into the holding portion 21 so as to prevent passage of the battery cell 1. .
- the end portion of the battery cell 1 inserted into the holding portion 21 can be stopped at a fixed position of the connection hole 24 without penetrating the end face plate portion 22.
- the electrode terminal 13 of the battery cell 1 exposed from the connection hole 24 of the end face plate portion 22 is connected to the bus bar plate 4 disposed outside the end face plate portion 22 as will be described in detail later.
- the first case 2X and the second case 2Y shown in FIG. 4 to FIG. 6 have a storage recess 25 in which the bus bar plate 4 is disposed on the outer surface of the end face plate portion 22.
- the first case 2 ⁇ / b> X and the second case 2 ⁇ / b> Y shown in the drawing have a peripheral wall 23 provided around the end face plate part 22 protruding outside the end face plate part 22, and are formed by the protruding part and the end face plate part 22.
- the recessed portion to be stored is used as a storage recess 25 to store the bus bar plate 4.
- the bus bar plate 4 is disposed in the storage recess 25 and the outside of the storage recess 25 is closed by the cover member 5.
- the holder case 2 can also have a vent opening in the peripheral wall 23 that is the side surface. Thereby, ventilation is made inside and outside the holder case 2, and the heat dissipation characteristics of the battery cell 1 stored in the holder case 2 can be further improved.
- the first case 2X and the second case 2Y are formed by injection molding using a mold.
- the holder case 2 is made of a member having excellent insulating properties, preferably a resin.
- a resin thermoplastic resins such as PC (polycarbonate), PP (polypropylene), and PBT, and thermosetting resins such as unsaturated phenol resins and unsaturated polyesters can be used.
- thermosetting resin it is formed by compression molding or injection compression molding.
- the structure in which the holder case is molded with a thermoplastic resin can simplify the injection molding using a mold, and can reduce the manufacturing cost by using an inexpensive thermoplastic resin.
- the holder case since the holder case may be heated to a high temperature when the battery cell is abnormal, it can be manufactured from a thermoplastic resin according to the capacity and number of battery cells used, the usage environment, and the required heat resistance. it can.
- the structure in which the holder case 2 is molded with a thermosetting resin increases the time for injecting the molten resin into the mold during molding using the mold, and is heated and cured after the injection. Since a process is required, there is a problem that mass production cannot be efficiently performed in a short time, and a problem that the manufacturing cost is increased by using an expensive thermosetting resin.
- the plurality of battery cells 1 are arranged at fixed positions by interposing the positioning spacer 3 between the first case 2X and the second case 2Y constituting the holder case 2, so that the first Even if the holding portions 21 formed in the case 2X and the second case 2Y are shallow, it is possible to hold the battery cells with the holding portions 21 while sandwiching both end portions from both sides. That is, by forming the holding portion 21 into which the end of the battery cell 1 is inserted shallow, the amount of resin to be used is reduced while reducing the manufacturing cost while making the mold simple structure. Can be mass-produced.
- thermosetting resin since the holder case made of thermosetting resin has excellent heat resistance, as described above, even if it is heated to high temperature due to ignition or smoke when the above occurs, it will melt Thus, similar firing to adjacent battery cells is effectively prevented. Moreover, since the thermosetting resin is also excellent in chemical resistance, it is possible to prevent adverse effects caused by the electrolyte solution discharged from the battery cell. From the above viewpoint, here, a thermosetting resin is preferably used as the resin for manufacturing the holder case.
- the positioning spacer 3 is disposed between the holding part 21 of the first case 2X and the holding part 21 of the second case 2Y, holds the intermediate part of the plurality of battery cells 1, and these battery cells 1 Specify the position of.
- the positioning spacer 3 shown in FIG. 6 is a perforated plate having a plurality of insertion holes 3 ⁇ / b> A that penetrate the battery cell 1 and hold the middle part of the battery cell 1. 3 A of insertion holes opened by the positioning spacer 3 are provided in the position facing the holding
- the insertion hole 3 ⁇ / b> A has an inner shape that comes into contact with the outer peripheral surface of the battery cell 1, so that an intermediate portion of the battery cell 1 can be held at a fixed position.
- the positioning spacer 3 holds the middle part of the battery cell 1 inserted into the insertion hole 3 ⁇ / b> A so that the battery cell 1 can be positioned at a fixed position in the holder case 2.
- the above battery pack 10 holds the plurality of battery cells 1 with the positioning spacer 3 and holds the both ends of the battery cell 1 from both sides between the first case 2X and the second case 2Y.
- a large number of battery cells 1 can be easily inserted into the opposing holding portions 21 while being positioned.
- the battery cell 1 is inserted into the insertion hole 3A of the positioning spacer 3, and the end on the insertion side is the first.
- the battery cell 1 can be positioned and positioned in the first case 2X by being inserted into the holding portion 21 of the case 2X (see FIG. 7B).
- This structure can hold the battery cell while positioning the battery cell substantially in the same state as the battery storage part that stores about half the length of the battery cell 1. Therefore, the opposite end portion can be quickly inserted into the opposing holding portion, and both end portions of the battery cell 1 can be held so as to be sandwiched from both sides. Thereby, the work efficiency at the time of an assembly can be improved.
- the positioning spacer 3 can be easily inserted through the battery cell 1 by reducing its thickness, and the region exposed in the holder case 2 can be widened while holding the middle part of the battery cell 1. it can. Therefore, the thickness of the positioning spacer can be preferably 10% or less of the total length of the battery cell.
- Such positioning spacer 3 can be made of resin or metal.
- the above positioning spacer 3 is sandwiched between the peripheral walls 23 facing each other of the first case 2X and the second case 2Y, and is arranged in the middle of the holder case 2.
- the holder case 2 shown in the figure is provided with a step recess 23A for fitting the positioning spacer 3 along the opening edge of the peripheral wall 23 of the first case 2X which is the lower case.
- the positioning spacer 3 is sandwiched between the opposing peripheral walls 23 of the first case 2X and the second case 2Y in a state where the positioning spacer 3 is fitted and positioned in the stepped recess 23A of the first case 2X. Wear it and fix it in place.
- the step recess can be provided in the second case.
- the positioning spacer can also be fixed to the holder case by bonding or by screwing or locking structure.
- the holder case 2 in which the plurality of battery cells 1 are housed is connected to the connection boss 29 provided at the opposing position of the first case 2X and the second case 2Y as shown in FIG. 39 is screwed to fix the first case 2X and the second case 2Y.
- a connecting boss 29 is integrally formed on the end plate portion 22 and the peripheral wall 23.
- the first case and the second case can be connected to each other via a connecting bolt and a nut.
- the battery pack 10 of FIGS. 2 to 5 includes a bus bar plate 4 on the upper and lower outer sides of the holder case 2 for connecting the electrode terminals 13 at both ends of the plurality of battery cells 1 stored in the holder case 2.
- the bus bar plate 4 is a flat metal plate that covers the outside of the end face plate portion 22, and a plurality of bus bar plates 4 are connected to connect the electrode terminals 13 of the plurality of battery cells 1 exposed from the connection holes 24 of the end face plate portion 22.
- the through hole 40 is opened. These through holes 40 are opened at positions facing the connection holes 24 opened in the end face plate portion 22.
- the bus bar plate 4 is electrically connected to the electrode terminals 13 of the plurality of battery cells 1 housed in the holder case 2.
- the battery pack 10 shown in the drawing is a first bus bar plate 4X disposed on the lower surface side of the first case 2X which is the lower case of the holder case 2 and outside the end surface plate portion 22, and a first case which is an upper case.
- a second bus bar plate 4Y disposed on the upper surface side of the two cases 2Y and outside the end surface plate portion 22 is provided.
- These bus bar plates 4 have a shape and a size that cover the entire end surface plate portion 22, and are sized so that the electrode terminals 13 of all the battery cells 1 accommodated in the holder case 2 can be connected.
- the bus bar plate 4 is fixed to the holder case 2 via a set screw 38 passing through the bus bar plate 4. With this structure, the bus bar plate 4 can be securely fixed to a fixed position of the holder case 2.
- the bus bar plate 4 is connected to the battery cell 1 via the lead plate 45 as shown in FIGS.
- the lead plate 45 shown in FIGS. 8 and 9 is a thin metal plate.
- the lead plate 45 has a connection hole 45A at a position facing the through hole 40 of the bus bar plate 4 and is connected to the connection piece 46 at the connection hole 45A. 47 are provided.
- the connection pieces 46 and 47 are integrally connected to the lead plate 45.
- the lead plate 45 is fixed to the bus bar plate 4 so that the connection pieces 46 and 47 are located in the through holes 40 opened in the bus bar plate 4.
- the bus bar plate 4 shown in FIGS. 8 and 9 is connected to three lead plates 45.
- connection pieces 46 and 47 of the lead plate 45 are connected to the battery cell 1 by connecting the connection pieces 46 and 47 of the lead plate 45 to the electrode terminal 13 of the battery cell 1. Therefore, the connection pieces 46 and 47 are disposed at positions facing the connection terminals 13 exposed from the connection holes 24. As shown in FIG. 10, the connection pieces 46 and 47 are formed in a shape and size that are welded to the connection terminal 13 in a state where the welding rod 60 is pressed. Further, the lead plate 45 shown in FIG. 8 has a fusing part 48 formed between the opening edge of the coupling hole 45 ⁇ / b> A and the connection piece 46. The fusing part 48 shown in the drawing is a long and thin line and is formed in a crank shape.
- the fusing part 48 is cut in a state where an overcurrent flows, so that the electrode terminal 13 of the battery cell 1 can be reliably cut off from the lead plate 45. Yes.
- an adhesive tape as a fixing member 49 is stuck to the surface of the fusing part in order to protect the fusing part 48 formed thin.
- This adhesive tape is a tape that is melted by heat. In a state where the fusing part 48 is melted, the adhesive tape is also melted and cut.
- the bus bar plate 4 to which the lead plate 45 is fixed is arranged in a state of being laminated on the outer surface of the end face plate portion 22, and the connection piece 47 of the lead plate 45 is connected to the connection hole of the end face plate portion 22. 24.
- the connection piece 47 disposed in the connection hole 24 is welded to the electrode terminal 13 of the battery cell 1.
- the welding rod 60 is welded by pressing the connection piece 47 of the lead plate 45 to the electrode terminal 13 exposed from the connection hole 24 of the end face plate portion 22.
- the welding rod 60 is welded while passing through the through hole 40 of the bus bar plate 4 and pressing the connection piece 47 against the electrode terminal 13 of the battery cell 1.
- the electrode terminals 13 at both ends of the plurality of battery cells 1 housed in the holder case 2 are connected to the first bus bar plate 4X and the second bus bar plate 4Y, whereby the plurality of battery cells are connected. 1 are connected in parallel.
- the bus bar plate 4 shown in FIGS. 4 and 5 includes bent pieces 41 and 43 bent along the peripheral wall 23 from the outer peripheral edge of the end face plate portion 22, and the distal ends of the bent pieces 41 and 43. The portions are further bent to form external connection portions 42 and 44.
- the battery pack 10 shown in FIGS. 1 to 5 is a side surface facing the holder case 2 having a rectangular outer shape, and a bent piece 41 is disposed on the first surface 2A, and the bent piece is formed on the third surface 2C. 43 is arranged.
- the first bus bar plate 4X has a bent piece 41 arranged along the first surface 2A of the holder case 2.
- the bent piece 41 is formed so as to rise from the lower surface side of the first case 2X along the first surface 2A, and the front end portion is bent in the horizontal direction to form the external connection portion 42.
- the holder case 2 has a fitting recess 26 that guides the bent piece 41 on the first surface 2A on which the bent piece 41 of the first bus bar plate 4X is disposed. Thus, by guiding the bent piece 41 to the fitting recess 26, the bent piece 41 is prevented from projecting to the surface side of the holder case 2 while the bent piece 41 is disposed at a fixed position. Yes.
- the second bus bar plate 4Y has a bent piece 43 disposed along the third surface 2C of the holder case 2.
- the bent piece 43 is formed so as to hang down from the upper surface side of the second case 2Y along the second surface 2C, and the distal end portion thereof is bent in the horizontal direction to form an external connection portion 44.
- the holder case 2 has a fitting recess 27 for guiding the bent piece 43 on the third surface 2C where the bent piece 43 of the second bus bar plate 4Y is arranged. Further, a stepped surface 28 on which the external connection portion 44 is disposed is formed in the fitting recess 27.
- the bent piece 43 and the external connection portion 44 are arranged while the bent piece 43 and the external connection portion 44 are arranged at fixed positions. Is prevented from projecting to the surface side of the holder case 2.
- the external connection portion 44 can be reliably externally connected to the stepped surface 28.
- the cover member 5 has a shape and a size covering the upper and lower surfaces of the holder case 2.
- the cover member 5 shown in the figure includes a flat closing plate portion 51 that follows the outer shape of the holder case 2 and a cover portion 52 that is connected to the periphery of the closing plate portion 51.
- the cover 52 is locked and fixed to a locking projection 31 provided on the outer peripheral surface of the holder case 2.
- the cover 52 shown in FIGS. 2 to 5 has a locking hole as a locking portion 53 for locking the locking projection 31.
- the cover member 5 locks the cover 52 with the holder case 2.
- the protrusion 31 is locked in a locked state in a locked state.
- the cover member 5 shown in FIGS. 1 to 5 includes a first cover member 5X that covers the outside on the first case 2X side, and a second cover member 5Y that covers the outside on the second case 2Y side. Yes.
- the first cover member 5X is provided with a cover portion 52 in a state of covering the four side surfaces of the first case 2X.
- the second cover member 5Y is provided with a cover portion 52 that faces three surfaces of the four side surfaces of the second case 2Y except the first surface 2A.
- the second cover member 5Y is fixed to the second surface 2B to the fourth surface 2D with the above-described locking structure, and passes through the bent piece 43 of the second bus bar plate 4Y on the first surface. Open without providing cover 52 to allow
- the above battery pack 10 is assembled in the following steps shown in FIG. (1)
- the positioning spacer 3 is disposed in the opening of the first case 2X.
- the positioning spacer 3 is, for example, arranged in a fitted state in a stepped recess 23A formed along the opening edge of the peripheral wall 23 of the first case 2X and fixed to a fixed position.
- the battery cell 1 is inserted into the insertion hole 3A of the positioning spacer 3 disposed in the opening of the first case 2X, and the end on the insertion side is held by the first case 2X. Insert into part 21.
- the first case 2 ⁇ / b> X and the second case 2 ⁇ / b> Y are connected to each other in a state where both ends of the plurality of battery cells 1 are held by the respective holding portions 21, and the plurality of battery cells 1 are accommodated inside the holder case 2. .
- the second cover member 5Y is disposed above the second bus bar plate 4Y. Arrange and connect to the holder case 2.
- the battery pack 10 described above stores the battery cells 1 in 65 places except for one place among the 66 holding portions 21 provided in the holder case 2. That is, the battery pack 10 has 65 battery cells 1 having a battery capacity of 4.62 Ah / cell connected in parallel via the bus bar plate 4 and has a large capacity of about 3V to 4.15V. A battery pack 10 is configured. It should be noted that the number, arrangement and connection of the battery cells 1 stored in the holder case 2 are not limited to this, and needless to say, it can be changed depending on the required voltage and output capacity.
- the battery pack 10 described above can connect a plurality of battery packs 10 in series as shown in FIG.
- the first bus bar plate disposed on the left side surface of the battery pack 10 positioned on the right side is connected to the external connection portion 44 of the second bus bar plate 4Y disposed on the right side surface of the battery pack 10 positioned on the left side.
- the state which connects the 4X external connection part 42 is shown.
- the external connection portions 42 and 44 stacked on each other are fixed to the holder case 2 by the connection screw 61 being screwed in the fitting recess 27. In this way, by connecting the external connection portions 42 and 44 facing each other in the battery packs adjacent to each other inside the fitting recess 27, connection can be made while reliably preventing unintended contact with the outside.
- the present invention is a battery pack in which a plurality of battery cells are held in a hollow shape in a holder case, and can be suitably used as a power source for a mounting-type power storage facility or as a backup power source for various battery devices. .
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Abstract
The present invention gives a holder case a simple structure, simplifies the structure of a mold, and reduces manufacturing cost. In the present invention, a large number of battery cells are simply and easily arranged while being positioned between a pair of cases. This battery pack comprises a plurality of battery cells that are obtained by blocking an opening section of an outer packaging canister with a sealing plate, and a holder case that holds the plurality of battery cells in a mutually parallel arrangement. The holder case comprises a first case and a second case that are each provided with a plurality of holding sections to an inner side thereof, sandwiches the plurality of battery cells from both sides in a lengthwise direction with the first case and the second case, and holds both end sections of the plurality of battery cells with the holding sections, while having a structure that exposes, within the holder case, a middle section of the plurality of battery cells. The battery pack further comprises a positioning spacer that is arranged between the holding sections of the first case and the holding sections of the second case, and holds and positions the middle section of the plurality of battery cells.
Description
本発明は、複数の電池セルをホルダーケースの定位置に収納してなる電池パックに関し、とくに、電池セルの中間部をホルダーケースの内部に表出する状態で収納してなる電池パックに関する。
The present invention relates to a battery pack in which a plurality of battery cells are stored in a fixed position of a holder case, and more particularly to a battery pack in which a middle portion of a battery cell is stored in a state of being exposed inside the holder case.
近年、太陽光や風力等の自然エネルギーを利用した発電が注目されている。これ等の発電方法は、石油や石炭等の限りある化石燃料をエネルギーとして使用する発電方法に比べて、資源が枯渇しない再生可能エネルギーを使用する地球環境に優しいクリーンな発電方法として、さらなる導入、普及が期待されている。ただ、この種の発電では、発電量が昼夜の時間帯や天候等に作用されるという問題点がある。このため、安定した電力供給を実現するために、発電された電力を蓄電する設備の需要が高まってきている。また、再生可能エネルギーによる発電に限らず、火力発電や原子力発電等の発電においても、24時間タービンを回して発電を継続する場合、深夜に発電された電力を、使用量が多くなる昼間に供給できるように蓄電する設備が求められている。
In recent years, power generation using natural energy such as sunlight and wind power has attracted attention. These power generation methods are further introduced as a clean environment-friendly power generation method that uses renewable energy that does not deplete resources compared to power generation methods that use limited fossil fuels such as oil and coal as energy. It is expected to spread. However, this type of power generation has a problem in that the amount of power generation is affected by daytime and nighttime, weather, and the like. For this reason, in order to implement | achieve stable electric power supply, the demand of the facility which stores the electric power generated is increasing. In addition to power generation using renewable energy, in power generation such as thermal power generation and nuclear power generation, when power generation is continued by turning the turbine for 24 hours, the power generated at midnight is supplied in the daytime when the amount of use increases. There is a need for equipment that can store electricity so that it can be used.
このような蓄電装置として、繰り返し使用できるリチウムイオン二次電池やニッケル水素二次電池等の電池セルを多直列多並列に接続してなる電池パックを備える装置が採用されている。中でもリチウムイオン二次電池は、軽量でありながら、起電力が高く、高エネルギー密度であるため、近年では多用されている。電池パックは、多数の電池セルを直列に接続して出力電圧を高くでき、また並列に接続して出力電流を大きくできる。特に近年の大容量化の要求から、収納する電池セルの数が多くなる傾向にある。しかしながら、電池セルは大電流で充放電すると発熱するため、放熱性を確保することも重要となる。
As such a power storage device, a device including a battery pack in which battery cells such as a lithium ion secondary battery and a nickel hydride secondary battery that can be used repeatedly are connected in multiple series and in parallel is employed. Among them, lithium ion secondary batteries are frequently used in recent years because they are lightweight but have high electromotive force and high energy density. The battery pack can increase the output voltage by connecting a large number of battery cells in series, and can increase the output current by connecting them in parallel. In particular, due to the recent demand for large capacity, the number of battery cells to be stored tends to increase. However, since battery cells generate heat when charged and discharged with a large current, it is also important to ensure heat dissipation.
多数の電池セルを備える電池パックとして、円筒形の電池セルを筒状の電池収納部に収納する電池ホルダを備える電池パックが開発されている(特許文献1参照)。この電池パックは、多数の電池セルを収納するために、筒状の電池収納部を多数形成してなる電池ホルダを備えている。この電池ホルダは、電池セルの中間において二分割されており、一対の分割ケースで電池セルを両側から挟み込むようにして保持する構造としている。以上の電池ホルダは、絶縁性などの観点から樹脂製とすることが一般的であり、このような二分割された分割ケースを各々金型で射出成形する場合、筒状の電池収納部の数が増えるに従い、脱型時の摩擦抵抗が増加する。このため、多数の電池セルを収納する電池ホルダを構成しようとしても、金型成型が困難となって製造コストが高騰するという問題があった。
As a battery pack including a large number of battery cells, a battery pack including a battery holder that stores cylindrical battery cells in a cylindrical battery storage unit has been developed (see Patent Document 1). This battery pack includes a battery holder formed with a large number of cylindrical battery storage portions in order to store a large number of battery cells. This battery holder is divided into two in the middle of the battery cell, and has a structure in which the battery cell is sandwiched and held from both sides by a pair of divided cases. The above battery holder is generally made of resin from the standpoint of insulation and the like, and when each of these two divided cases is injection-molded with a mold, the number of cylindrical battery storage portions As the value increases, the frictional resistance during demolding increases. For this reason, even if it was going to comprise the battery holder which accommodates many battery cells, there existed a problem that metal mold | molding became difficult and manufacturing cost rose.
これに対して、円筒状の電池セル全体を電池収納部に収納することなく、両端部のみを電池収納部に収納して電池セルの中間部を表出させる構造の電池パックも提案されている(特許文献2参照)。この電池パックは、電池ホルダを2分割してなる一対の分割ケースの内面に、電池セルの端部を収納する筒状の電池収納部を設けている。この電池ホルダは、電池セルの端部のみを電池収納部に挿入するので、電池セルの中間部を表出させて、この部分の放熱特性を向上できる特徴がある。
On the other hand, there has also been proposed a battery pack having a structure in which only the both ends are accommodated in the battery accommodating portion and the intermediate portion of the battery cell is exposed without accommodating the entire cylindrical battery cell in the battery accommodating portion. (See Patent Document 2). In this battery pack, a cylindrical battery storage portion that stores an end portion of a battery cell is provided on the inner surface of a pair of split cases formed by dividing the battery holder into two. Since this battery holder inserts only the edge part of a battery cell in a battery accommodating part, the intermediate part of a battery cell can be exposed and the heat dissipation characteristic of this part can be improved.
電池セルの両端部を電池収納部で保持する電池ホルダ92は、図12に示すように、一方の分割ケース92X(図においては下ケース)の電池収納部93に電池セル91の一端を挿入した状態で、他方の分割ケース92Y(図においては上ケース)の電池収納部93に電池セル91の他端を挿入して両側から挟持する。このとき、一方の分割ケース92Xの電池収納部93に一端が挿入された電池セル91の他端の位置が前後左右に移動する状態となると、電池セル91の他端を他方の分割ケース92Yの電池収納部93に速やかに案内するのが難しくなる。とくに、多数の電池セル91を収納する場合には、全ての電池セル91の他端を同じタイミングで対向する分割ケース92Yの電池収納部93に挿入する必要があって、この作業に手間がかかる。困ったことに、この問題点は、電池収納部93を浅くして電池セル91が表出する領域を広くするほど顕著になる。
As shown in FIG. 12, the battery holder 92 that holds both ends of the battery cell in the battery storage portion has one end of the battery cell 91 inserted into the battery storage portion 93 of one split case 92X (lower case in the figure). In the state, the other end of the battery cell 91 is inserted into the battery housing portion 93 of the other split case 92Y (upper case in the figure) and is sandwiched from both sides. At this time, when the position of the other end of the battery cell 91 having one end inserted into the battery housing portion 93 of one split case 92X moves back and forth and left and right, the other end of the battery cell 91 is moved to the other split case 92Y. It is difficult to promptly guide the battery storage unit 93. In particular, when storing a large number of battery cells 91, it is necessary to insert the other ends of all the battery cells 91 into the battery storage portions 93 of the divided case 92Y that face each other at the same timing. . Unfortunately, this problem becomes more prominent as the battery storage portion 93 is made shallower and the region where the battery cell 91 is exposed is widened.
すなわち、電池ホルダは、一対のケースに形成される電池収納部である筒部の深さを深くすると挿入される電池の姿勢を特定し易くして組み立てを楽にできるが、金型が複雑になって脱型も難しくなり、また製造コストも高くなる。さらに、電池ホルダの内部に表出する電池セルの面積も小さくなり放熱特性が低下する。反対に電池収納部を浅くすると、金型の構造を簡単にして脱型もし易くなる。このため、製造コストを低減でき、さらに、電池ホルダの内部に表出する電池セルの面積も大きくできるが、多数の電池セルを電池ホルダの定位置に配置しながら、対向する一対のケースで両側から挟み込むように保持するのが難しくなり、組み立て作業の効率が低下する。以上のように、電池収納部を浅くして電池ホルダや金型を簡単な構造とすることと、一対のケースからなる電池ホルダの電池収納部に電池セルの両端部を速やかに案内して多数の電池セルを両側から挟持することは、互いに相反する特性であり、両方を同時に満たすことはできなかった。
That is, the battery holder can be easily assembled by making it easier to specify the orientation of the battery to be inserted when the depth of the cylindrical portion which is the battery housing portion formed in the pair of cases is increased, but the mold becomes complicated. This makes it difficult to remove the mold and increases the manufacturing cost. Furthermore, the area of the battery cell exposed inside the battery holder is also reduced, and the heat dissipation characteristics are deteriorated. On the other hand, if the battery housing is shallow, the mold structure is simplified and the mold can be easily removed. As a result, the manufacturing cost can be reduced, and the area of the battery cell exposed inside the battery holder can be increased. It becomes difficult to hold the product so as to be sandwiched between the two, and the efficiency of the assembly work is reduced. As described above, the battery holder is shallow and the battery holder and the mold have a simple structure, and the battery holder of the battery holder made up of a pair of cases is quickly guided to both ends of the battery cell to make many Nipping the battery cell from both sides is a contradictory property, and both cannot be satisfied at the same time.
本発明は、このような背景に鑑みてなされたものであり、その目的の一は、ホルダーケースを簡単な構造として、金型の構造を簡単にし、脱型もし易くし、しかも製造コストを低減でき、さらには多数の電池セルを一対のケースの間に位置決めしながら配置し、電池セルの両端部を一対のケースで両側から簡単に保持して挟持できる電池パックを提供することにある。
さらに、本発明は、電池セルの両端部をホルダーケースで保持しながら、電池セルの中間部の広い面積をホルダーケース内に表出させて放熱特性を向上できる電池パックを提供することにある。 The present invention has been made in view of such a background, and one of its purposes is to make the holder case simple, simplify the structure of the mold, make it easy to remove the mold, and reduce the manufacturing cost. It is also possible to provide a battery pack in which a large number of battery cells are arranged while being positioned between a pair of cases, and both ends of the battery cells can be easily held and sandwiched from both sides by a pair of cases.
Furthermore, an object of the present invention is to provide a battery pack capable of improving heat dissipation characteristics by exposing a large area of the middle part of the battery cell in the holder case while holding both ends of the battery cell with the holder case.
さらに、本発明は、電池セルの両端部をホルダーケースで保持しながら、電池セルの中間部の広い面積をホルダーケース内に表出させて放熱特性を向上できる電池パックを提供することにある。 The present invention has been made in view of such a background, and one of its purposes is to make the holder case simple, simplify the structure of the mold, make it easy to remove the mold, and reduce the manufacturing cost. It is also possible to provide a battery pack in which a large number of battery cells are arranged while being positioned between a pair of cases, and both ends of the battery cells can be easily held and sandwiched from both sides by a pair of cases.
Furthermore, an object of the present invention is to provide a battery pack capable of improving heat dissipation characteristics by exposing a large area of the middle part of the battery cell in the holder case while holding both ends of the battery cell with the holder case.
上記の目的を達成するために、本発明の第1の形態に係る電池パックによれば、筒状で有底の外装缶11の開口部を封口板12で閉塞してなる複数の電池セル1と、複数の電池セル1を互いに平行な姿勢とし、かつ各電池セル1の両端に設けられた電極端子13を同一面に配置する姿勢で保持するホルダーケース2とを備えている。ホルダーケース2は、電池セル1の一方の端部を挿入して保持する保持部21を内側に複数設けた第1ケース2Xと、電池セル1の他方の端部を挿入して保持する保持部21を内側に複数設けた第2ケース2Yとを備え、第1ケース2Xと第2ケース2Yで複数の電池セル1を長手方向の両側から挟持して、複数の電池セル1の両端部を保持部21で保持すると共に、複数の電池セル1の中間部をホルダーケース2内に表出させる構造としている。さらに、電池パックは、第1ケース2Xの保持部21と第2ケース2Yの保持部21との間に配置されて、複数の電池セル1の中間部を保持して位置決めする位置決スペーサー3を備えている。
In order to achieve the above object, according to the battery pack of the first embodiment of the present invention, a plurality of battery cells 1 formed by closing the opening of a cylindrical, bottomed outer can 11 with a sealing plate 12. And a holder case 2 for holding the plurality of battery cells 1 in a parallel posture and holding the electrode terminals 13 provided at both ends of each battery cell 1 on the same surface. The holder case 2 includes a first case 2X provided with a plurality of holding portions 21 for inserting and holding one end portion of the battery cell 1, and a holding portion for inserting and holding the other end portion of the battery cell 1. The second case 2Y is provided with a plurality of 21 inside, and a plurality of battery cells 1 are sandwiched from both sides in the longitudinal direction by the first case 2X and the second case 2Y to hold both ends of the plurality of battery cells 1. While being held by the part 21, the intermediate part of the plurality of battery cells 1 is exposed in the holder case 2. Further, the battery pack is disposed between the holding portion 21 of the first case 2X and the holding portion 21 of the second case 2Y, and a positioning spacer 3 for holding and positioning the intermediate portions of the plurality of battery cells 1 is provided. I have.
上記構成により、第1ケースと第2ケースの間に配置される複数の電池セルの中間部を位置決スペーサーで保持して位置決めすることで、電池セルの両端部を第1ケースと第2ケースの保持部に案内しながら、電池セルを長手方向の両側から挟持できる。このため、複数の電池セルの両端部を第1ケースと第2ケースの保持部に簡単かつ容易に案内して、組立作業を効率よくできる。また、組み立て時において、第1ケースと第2ケースの間に配置される位置決スペーサーで複数の電池セルを位置決めできるので、第1ケース及び第2ケースに形成される保持部を浅く形成でき、これにより、簡単な構造の金型を使用して第1ケースと第2ケースを簡単かつ容易に、しかも低コストに製造できる。
With the above configuration, by positioning the intermediate portions of the plurality of battery cells arranged between the first case and the second case with the positioning spacers, both end portions of the battery cells are positioned in the first case and the second case. The battery cell can be clamped from both sides in the longitudinal direction while being guided to the holding portion. For this reason, the both ends of the plurality of battery cells can be easily and easily guided to the holding portions of the first case and the second case, and the assembling work can be efficiently performed. Further, at the time of assembly, since the plurality of battery cells can be positioned by the positioning spacer disposed between the first case and the second case, the holding portions formed in the first case and the second case can be formed shallowly, Accordingly, the first case and the second case can be manufactured easily and easily at a low cost by using a mold having a simple structure.
また、第2の形態に係る電池パックによれば、位置決スペーサー3が、電池セル1を貫通させて、電池セル1の中間部を保持する挿通孔3Aを複数開口してなる多孔プレートで、挿通孔3Aに電池セル1を嵌入して電池セル1を位置決めすることができる。上記構成により、位置決スペーサーを簡単な構造としながら、多孔プレートに開口された挿通孔に電池セルを嵌入して、複数の電池セルを確実に位置決めできる。
Moreover, according to the battery pack which concerns on a 2nd form, the positioning spacer 3 is a perforated plate which penetrates the battery cell 1 and opens a plurality of insertion holes 3A for holding the intermediate part of the battery cell 1, The battery cell 1 can be inserted into the insertion hole 3A and positioned. With the configuration described above, the battery cell can be inserted into the insertion hole opened in the perforated plate while the positioning spacer has a simple structure, so that the plurality of battery cells can be reliably positioned.
さらに、第3の形態に係る電池パックによれば、ホルダーケース2を熱硬化性樹脂で成形することができる。上記構成により、第1ケースと第2ケースとを簡単な形状とすることで、熱硬化性樹脂を使用して容易に製造できる。とくに、ホルダーケースを熱硬化性樹脂で成形することで、優れた耐熱性と耐薬品性を実現できる。
Furthermore, according to the battery pack according to the third embodiment, the holder case 2 can be formed of a thermosetting resin. With the above-described configuration, the first case and the second case can be easily manufactured using a thermosetting resin by making the shapes simple. In particular, excellent heat resistance and chemical resistance can be realized by molding the holder case with a thermosetting resin.
さらにまた、第4の形態に係る電池パックによれば、第1ケース2X及び第2ケース2Yの保持部21の深さを電池セル1の全長の25%以下とし、位置決スペーサー3の厚さを電池セル1の全長の10%以下とすることができる。
Furthermore, according to the battery pack of the fourth embodiment, the depth of the holding portion 21 of the first case 2X and the second case 2Y is 25% or less of the total length of the battery cell 1, and the thickness of the positioning spacer 3 is increased. Can be 10% or less of the total length of the battery cell 1.
上記構成により、第1ケース及び第2ケースの保持部の深さを浅くし、位置決スペーサーの厚さを薄くすることで、電池セルがホルダーケース内に表出する面積を広くして効果的に放熱できる。とくに、第1ケース及び第2ケースの保持部の深さを電池セルの全長の25%以下とし、位置決スペーサーの厚さを電池セルの全長の10%以下とすることで、電池セルの外周面の40%以上の領域を表出させて効果的に放熱できる。
With the above configuration, the depth of the holding portion of the first case and the second case is reduced, and the thickness of the positioning spacer is reduced, so that the area where the battery cell is exposed in the holder case is widened and effective. Can dissipate heat. In particular, the depth of the holding part of the first case and the second case is set to 25% or less of the total length of the battery cell, and the thickness of the positioning spacer is set to 10% or less of the total length of the battery cell. An area of 40% or more of the surface can be exposed to effectively dissipate heat.
さらにまた、第5の形態に係る電池パックによれば、第1ケース2X及び第2ケース2Yが、複数の保持部21を内側面に設けた端面プレート部22と、端面プレート部22の周囲に沿って形成された周壁23とを備え、全体の外形を略矩形状として、周壁23の対向する開口縁を互いに連結して、内部に電池セル1の中間部を表出させる中空部20を形成し、第1ケース2X及び第2ケース2Yの対向する周壁23で位置決スペーサー3を挟着して定位置に配置することができる。
Furthermore, according to the battery pack of the fifth embodiment, the first case 2X and the second case 2Y are provided around the end plate portion 22 and the end plate portion 22 provided with a plurality of holding portions 21 on the inner surface. And a peripheral wall 23 formed along the outer wall 23. The outer shape of the whole wall is substantially rectangular, and the opposing opening edges of the peripheral wall 23 are connected to each other to form a hollow portion 20 that exposes the intermediate portion of the battery cell 1 inside. In addition, the positioning spacer 3 can be sandwiched between the peripheral walls 23 of the first case 2X and the second case 2Y which are opposed to each other, and can be arranged at a fixed position.
上記構成により、第1ケースと第2ケースとを、複数の保持部を内面に設けた端面プレート部と、この端面プレート部の周囲に沿って形成された周壁とで構成し、外形を略矩形状として、周壁の対向する開口縁を互いに連結することで、ホルダーケースを簡単な構造としながら、内部に形成される収納室の定位置に複数の電池セルを配置できる。さらに、第1ケースと第2ケースの対向する周壁で位置決スペーサーを挟着することで、位置決スペーサーを正確な位置に配置して、電池セルを正確に位置決めできる。
With the above-described configuration, the first case and the second case are configured by an end surface plate portion provided with a plurality of holding portions on the inner surface and a peripheral wall formed along the periphery of the end surface plate portion, and the outer shape is substantially rectangular. By connecting the opposing opening edges of the peripheral walls to each other as a shape, a plurality of battery cells can be arranged at fixed positions in a storage chamber formed inside while the holder case has a simple structure. Furthermore, by positioning the positioning spacer between the opposing peripheral walls of the first case and the second case, the positioning spacer can be placed at an accurate position, and the battery cell can be accurately positioned.
さらにまた、第6の形態に係る電池パックによれば、第1ケース2X及び第2ケース2Yの少なくとも一方は、周壁23の開口縁に沿って位置決スペーサー3を嵌合させる段差凹部23Aを設けることができる。上記構成により、第1ケースまたは第2ケースの少なくとも一方の開口縁に沿って設けた段差凹部に位置決スペーサーを嵌合させて位置決スペーサーを定位置に配置できる。
Furthermore, according to the battery pack of the sixth embodiment, at least one of the first case 2X and the second case 2Y is provided with a step recess 23A for fitting the positioning spacer 3 along the opening edge of the peripheral wall 23. be able to. With the above configuration, the positioning spacer can be placed at a fixed position by fitting the positioning spacer to the stepped recess provided along the opening edge of at least one of the first case or the second case.
さらにまた、第7の形態に係る電池パックによれば、さらに、第1ケース2X及び第2ケース2Yの端面プレート部22の外側に配置される一対のバスバープレート4を備えることができる。この電池パックは、複数の電池セル1を、同じ向きに並べてホルダーケース2に収納し、第1ケース2X及び第2ケース2Yは、保持部21の底面を貫通する接続孔24を端面プレート部22に開口して、接続孔24から電池セル1の電極端子13を露出させて、電極端子13をバスバープレート4に接続して複数の電池セル1を並列に接続することができる。
Furthermore, according to the battery pack of the seventh embodiment, it is possible to further include a pair of bus bar plates 4 arranged on the outer sides of the end face plate portions 22 of the first case 2X and the second case 2Y. In this battery pack, a plurality of battery cells 1 are arranged in the same direction and accommodated in a holder case 2, and the first case 2 </ b> X and the second case 2 </ b> Y have a connection hole 24 penetrating the bottom surface of the holding portion 21 and an end plate portion 22. The electrode terminals 13 of the battery cells 1 are exposed through the connection holes 24, and the electrode terminals 13 are connected to the bus bar plate 4 so that the plurality of battery cells 1 can be connected in parallel.
上記構成により、複数の電池セルを同じ向きに並べてホルダーケースに収納し、第1ケース及び第2ケースの保持部に挿入された電池端部の電極端子を端面プレート部に開口された接続孔から露出させ、この電極端子を端面プレート部の外側に配置されるバスバープレートに接続することで複数の電池セルを簡単に並列接続できる。さらに、この電池パックは、第1ケース及び第2ケースの端面プレート部の外側に一対のバスバープレートを配置するので、バスバープレートを介して、電池セルの両端から伝導される熱を効果的に放熱できる。
With the above configuration, a plurality of battery cells are arranged in the same direction and stored in the holder case, and the battery terminal electrode terminals inserted into the holding parts of the first case and the second case are connected to the connection holes opened in the end face plate part. A plurality of battery cells can be easily connected in parallel by exposing and connecting this electrode terminal to a bus bar plate arranged outside the end face plate portion. Furthermore, since this battery pack arranges a pair of bus bar plates outside the end plate portions of the first case and the second case, it effectively dissipates heat conducted from both ends of the battery cells via the bus bar plate. it can.
さらにまた、第8の形態に係る電池パックによれば、一対のバスバープレート4が、第1ケース2Xの外側に配置される第1のバスバープレート4Xと第2ケース2Yの外側に配置される第2のバスバープレート4Yからなり、各バスバープレート4は、端面プレート部22の外周縁から周壁23に沿って折曲された折曲片41、43を備え、折曲片41、43の先端部をさらに折曲して外部接続部42、44を設けることができる。第1のバスバープレート4Xは、外形を矩形状とするホルダーケース2の側面である第1面2Aに折曲片41を配置し、第2のバスバープレート4Yは、第1面2Aと対向する側面である第3面2Cに折曲片43を配置することができる。
Furthermore, according to the battery pack of the eighth aspect, the pair of bus bar plates 4 are arranged on the outer sides of the first bus bar plate 4X and the second case 2Y arranged outside the first case 2X. 2 bus bar plates 4Y, each bus bar plate 4 is provided with bent pieces 41, 43 bent along the peripheral wall 23 from the outer peripheral edge of the end face plate portion 22, and the tip ends of the bent pieces 41, 43 are Furthermore, the external connection parts 42 and 44 can be provided by bending. The first bus bar plate 4X has a bent piece 41 arranged on the first surface 2A which is the side surface of the holder case 2 having a rectangular outer shape, and the second bus bar plate 4Y is a side surface facing the first surface 2A. The bent piece 43 can be arranged on the third surface 2C.
上記構成により、ホルダーケースの両面に配置される一対のバスバープレートの折曲片をホルダーケースの対向する側面に配置することで、これ等の折曲片が互いに干渉するのを確実に防止できる。また、複数の電池パックを外部接続する際においても正負の外部接続部をホルダーケースの対向する側面に配置することで、ショート等の弊害を確実に阻止しながら安全に接続できる。
With the above configuration, by arranging the bent pieces of the pair of bus bar plates arranged on both sides of the holder case on the opposite side surfaces of the holder case, it is possible to reliably prevent these bent pieces from interfering with each other. Further, even when a plurality of battery packs are externally connected, the positive and negative external connection portions are arranged on the opposing side surfaces of the holder case, so that the battery pack can be safely connected while preventing harmful effects such as a short circuit.
さらにまた、第9の形態に係る電池パックによれば、ホルダーケース2が、第1のバスバープレート4Xの折曲片41が配置される第1面2Aに、折曲片41を案内する嵌合凹部26を備えて、第2のバスバープレート4Yの折曲片43が配置される第3面2Cに、折曲片43を案内する嵌合凹部27を備えて、この嵌合凹部27には外部接続部44を配置する段差面28を形成することができる。
Furthermore, according to the battery pack of the ninth embodiment, the holder case 2 is fitted to guide the bent piece 41 to the first surface 2A on which the bent piece 41 of the first bus bar plate 4X is arranged. A fitting recess 27 for guiding the bent piece 43 is provided on the third surface 2C on which the bent piece 43 of the second bus bar plate 4Y is disposed, and the fitting concave portion 27 is externally provided. A stepped surface 28 on which the connecting portion 44 is disposed can be formed.
上記構成により、ホルダーケースの第1面と第3面に配置される折曲片を嵌合凹部に案内して定位置に配置しながら確実に外部接続できる。とくに、ホルダーケースの表面から後退した嵌合凹部に折曲片を案内することで、金属片である折曲片がホルダーケースの表面側に突出するのを防止して、ショート等の弊害を有効に防止できる。また、ホルダーケースの第3面に設けた嵌合凹部には、第2のバスバープレートの外部接続部を配置する段差面を設けているので、この面において第2のバスバープレートの外部接続部を確実に外部接続できる。例えば、複数の電池パックを直列に接続する場合には、この段差面に配置される第2のバスバープレートの外部接続部の上面に、隣接する電池パックの第1のバスバープレートの外部接続部を積層状態で配置して確実に接続できる。
With the above configuration, the bent pieces arranged on the first surface and the third surface of the holder case can be reliably externally connected while being guided to the fitting recesses and arranged at a fixed position. In particular, by guiding the bent piece into the mating recess that has receded from the surface of the holder case, the bent piece, which is a metal piece, is prevented from projecting to the surface side of the holder case, effectively preventing problems such as short circuits. Can be prevented. In addition, since the fitting recess provided on the third surface of the holder case is provided with a stepped surface on which the external connection portion of the second bus bar plate is arranged, the external connection portion of the second bus bar plate is provided on this surface. Secure external connection. For example, when a plurality of battery packs are connected in series, the external connection portion of the first bus bar plate of the adjacent battery pack is provided on the upper surface of the external connection portion of the second bus bar plate arranged on the step surface. Arranged in a stacked state and can be securely connected.
以下、本発明の実施形態を図面に基づいて説明する。ただし、以下に示す実施形態は、本発明の技術思想を具体化するための電池パックを例示するものであって、本発明は電池パックを以下のものに特定しない。また、本明細書は、特許請求の範囲に示される部材を、実施形態の部材に特定するものでは決してない。特に実施形態に記載されている構成部品の寸法、材質、形状、その相対的配置等は特に特定的な記載がない限りは、本発明の範囲をそれのみに限定する趣旨ではなく、単なる説明例にすぎない。さらに以下の説明において、同一の名称、符号については同一若しくは同質の部材を示しており、詳細説明を適宜省略する。さらに、本発明を構成する各要素は、複数の要素を同一の部材で構成して一の部材で複数の要素を兼用する態様としてもよいし、逆に一の部材の機能を複数の部材で分担して実現することもできる。
Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the embodiment described below exemplifies a battery pack for embodying the technical idea of the present invention, and the present invention does not specify the battery pack as follows. Moreover, this specification does not specify the member shown by the claim as the member of embodiment by any means. In particular, the dimensions, materials, shapes, relative arrangements, and the like of the component parts described in the embodiments are not intended to limit the scope of the present invention only to specific examples unless otherwise specifically described. Only. Furthermore, in the following description, the same name and reference sign indicate the same or the same members, and detailed description will be omitted as appropriate. Furthermore, each element constituting the present invention may be configured such that a plurality of elements are configured by the same member and the plurality of elements are shared by one member. It can also be realized by sharing.
本発明の電池パックは、載置型の蓄電用設備の電源として利用でき、例えば発電所や発電施設用、工場用、公共施設用の蓄電装置として、太陽光発電や風力発電で充電し、あるいは深夜電力で充電して、必要時に放電する蓄電装置に適用できる。このような用途においては、複数の電池パックを連結して、これらを直列及び/又は並列に接続して出力を大きくして蓄電装置を構成できる。蓄電装置は、複数の電池パックを数珠繋ぎに接続して、終端にコントローラを接続して、各電池パックの充放電を制御することができる。ただし、本発明の電池パックは、このような蓄電用設備の電源に限らず、日中の太陽光を充電して夜間に放電する街路灯用の電源や、停電時に駆動する信号機やコンピュータサーバ用のバックアップ電源、携帯電話等の無線基地局用のバックアップ電源装置等にも利用可能であることはいうまでもない。
The battery pack of the present invention can be used as a power source for a stationary power storage facility. For example, as a power storage device for a power plant, power generation facility, factory, or public facility, the battery pack is charged by solar power generation or wind power generation, or at midnight. It can be applied to a power storage device that is charged with electric power and discharged when necessary. In such an application, a plurality of battery packs can be connected and connected in series and / or in parallel to increase the output to constitute a power storage device. The power storage device can control charging / discharging of each battery pack by connecting a plurality of battery packs in a daisy chain and connecting a controller to the terminal end. However, the battery pack of the present invention is not limited to such a power source for power storage facilities, but is also used for a street light power source that charges sunlight during the day and discharges it at night, a traffic light that is driven during a power failure, and a computer server Needless to say, the present invention can also be used for a backup power supply for a wireless base station such as a mobile phone or a mobile phone.
図1~図6に、本発明の一実施形態に係る電池パックを示している。これらの図において、図1は電池パックの斜視図、図2は図1の電池パックのII-II線断面図、図3は図1の電池パックのIII-III線断面図、図4は図1の電池パックの分解斜視図、図5は図4の電池パックを下側から見た分解斜視図、図6はホルダーケースの分解斜視図をそれぞれ示している。
1 to 6 show a battery pack according to an embodiment of the present invention. In these drawings, FIG. 1 is a perspective view of the battery pack, FIG. 2 is a cross-sectional view taken along line II-II of the battery pack of FIG. 1, FIG. 3 is a cross-sectional view taken along line III-III of FIG. 1 is an exploded perspective view of the battery pack 1, FIG. 5 is an exploded perspective view of the battery pack of FIG. 4 viewed from below, and FIG. 6 is an exploded perspective view of the holder case.
これ等の図に示す電池パック10は、筒状で有底の外装缶11の開口部を封口板12で閉塞してなる複数の電池セル1と、複数の電池セル11を互いに平行な姿勢とし、かつ各電池セル1の両端に設けられた電極端子13を同一面に配置する姿勢で保持するホルダーケース2とを備えている。ホルダーケース2は、電池セル1の一方の端部を挿入して保持する保持部21を内側に複数設けた第1ケース2Xと、電池セル1の他方の端部を挿入して保持する保持部21を内側に複数設けた第2ケース2Yとを備えている。ホルダーケース2は、第1ケース2Xと第2ケース2Yで複数の電池セル1を長手方向の両側から挟持して、複数の電池セル1の両端部を保持部21で保持して中間部をホルダーケース2内に表出させている。さらに、電池パック10は、第1ケース2Xの保持部21と第2ケース2Yの保持部21との間に配置されて、電池セル1の中間部を位置決めしながら保持する位置決スペーサー3を備えている。
The battery pack 10 shown in these drawings includes a plurality of battery cells 1 in which openings of a cylindrical and bottomed outer can 11 are closed with a sealing plate 12, and a plurality of battery cells 11 are parallel to each other. And a holder case 2 that holds the electrode terminals 13 provided at both ends of each battery cell 1 in a posture to be arranged on the same surface. The holder case 2 includes a first case 2X provided with a plurality of holding portions 21 for inserting and holding one end portion of the battery cell 1, and a holding portion for inserting and holding the other end portion of the battery cell 1. 2nd case 2Y which provided multiple 21 inside. The holder case 2 includes a first case 2X and a second case 2Y sandwiching the plurality of battery cells 1 from both sides in the longitudinal direction, holding both end portions of the plurality of battery cells 1 by the holding portions 21, and holding an intermediate portion. Expressed in Case 2. Further, the battery pack 10 includes a positioning spacer 3 that is disposed between the holding portion 21 of the first case 2X and the holding portion 21 of the second case 2Y and holds the middle portion of the battery cell 1 while positioning. ing.
(電池セル1)
電池セル1は、充放電できるリチウムイオン二次電池である。ただ、電池セルは、リチウムイオン二次電池に限定されず、ニッケル水素電池やニッケルカドミウム電池等の充放電できる電池であってもよい。さらに、本実施例の電池パックでは、円筒形電池が使用されているが、これに限定されず、角形電池や扁平形電池とすることもできる。 (Battery cell 1)
Thebattery cell 1 is a lithium ion secondary battery that can be charged and discharged. However, the battery cell is not limited to a lithium ion secondary battery, and may be a battery that can be charged and discharged, such as a nickel metal hydride battery or a nickel cadmium battery. Furthermore, in the battery pack of the present embodiment, a cylindrical battery is used. However, the present invention is not limited to this, and a square battery or a flat battery may be used.
電池セル1は、充放電できるリチウムイオン二次電池である。ただ、電池セルは、リチウムイオン二次電池に限定されず、ニッケル水素電池やニッケルカドミウム電池等の充放電できる電池であってもよい。さらに、本実施例の電池パックでは、円筒形電池が使用されているが、これに限定されず、角形電池や扁平形電池とすることもできる。 (Battery cell 1)
The
電池セル1は、図6の一部拡大図に示すように、筒状で有底の外装缶11に電極体(図示せず)を収納すると共に、電解液を充填して外装缶11の開口部を封口板12で閉塞している。電池セル1は、両端面である外装缶11の底面と、この外装缶11の開口部に絶縁状態で閉塞された封口板12とを正負の電極端子13としている。
As shown in a partially enlarged view of FIG. 6, the battery cell 1 stores an electrode body (not shown) in a cylindrical and bottomed outer can 11 and is filled with an electrolyte solution to open the outer can 11. The part is closed with a sealing plate 12. The battery cell 1 uses the bottom surface of the outer can 11 as both end surfaces and the sealing plate 12 closed in an insulating state at the opening of the outer can 11 as positive and negative electrode terminals 13.
図6に示す電池セル1は、外装缶11を鉄または鉄合金として強度を高くすると共に、封口板12には凸部電極を設けることなく、中央凹となる円板形状に形成された金属板を使用している。このような封口板12として、アルミニウム又はアルミニウム合金が使用できる。この構造の電池セル1は、鉄製の外装缶11に対してアルミニウム製の封口板12の強度を低くすることができる。このため、過充電や内部短絡等により、内圧が異常に高くなる等の問題が生じた際には、アルミニウム製の封口板12を優先的に開放させて、内部のガス等を速やかに外部に排出して安全性を保証することができる。ただ、電池セルは、図示しないが、封口板に凸部電極を設けた構造とすることもできる。この電池セルは、封口板や凸部電極に安全弁を設けて、電池の内圧が上昇すると、安全弁を開弁して内部のガスを排気口から排気することができる。
The battery cell 1 shown in FIG. 6 has a metal plate formed in a disk shape having a central recess without providing a convex electrode on the sealing plate 12 while increasing the strength by using the outer can 11 as iron or an iron alloy. Is used. As such a sealing plate 12, aluminum or an aluminum alloy can be used. The battery cell 1 having this structure can reduce the strength of the aluminum sealing plate 12 relative to the iron outer can 11. For this reason, when problems such as abnormally high internal pressure occur due to overcharge or internal short circuit, etc., the aluminum sealing plate 12 is opened preferentially, and the internal gas etc. is quickly released to the outside. It can be discharged to guarantee safety. However, although not shown, the battery cell may have a structure in which a convex electrode is provided on the sealing plate. In this battery cell, a safety valve is provided on the sealing plate or the convex electrode, and when the internal pressure of the battery rises, the safety valve can be opened to exhaust the internal gas from the exhaust port.
(ホルダーケース2)
図2、図3、及び図6に示すホルダーケース2は、複数の電池セル1を互いに平行な姿勢で収納している。複数の電池セル1は、同じ向きとなるように配置されている。すなわち、図においては、外装缶11の底側の端部が下方となり、封口板12で閉塞された端部側が上方となる姿勢で配置されている。ホルダーケース2は、各電池セル1の両端に設けられた電極端子13を同一面に配置する姿勢で定位置に保持している。 (Holder case 2)
Theholder case 2 shown in FIGS. 2, 3, and 6 accommodates a plurality of battery cells 1 in a parallel posture. The plurality of battery cells 1 are arranged in the same direction. That is, in the figure, the bottom end of the outer can 11 is positioned downward, and the end closed by the sealing plate 12 is positioned upward. The holder case 2 holds the electrode terminals 13 provided at both ends of each battery cell 1 at a fixed position in a posture where they are arranged on the same surface.
図2、図3、及び図6に示すホルダーケース2は、複数の電池セル1を互いに平行な姿勢で収納している。複数の電池セル1は、同じ向きとなるように配置されている。すなわち、図においては、外装缶11の底側の端部が下方となり、封口板12で閉塞された端部側が上方となる姿勢で配置されている。ホルダーケース2は、各電池セル1の両端に設けられた電極端子13を同一面に配置する姿勢で定位置に保持している。 (Holder case 2)
The
ホルダーケース2は、図6に示すように、電池セル1の長手方向であって、厚さ方向の中間において、第1ケース2Xと第2ケース2Yに二分割されている。第1ケース2Xと第2ケース2Yは、それぞれ円筒状の電池セル1の端部を個別に挿入して保持するための保持部21を内側に設けている。第1ケース2Xと第2ケース2Yは、電池セル1の端部を挿入する複数の保持部21を内側面に設けた端面プレート部22と、端面プレート部22の周囲に沿って形成された周壁23とを備えている。第1ケース2Xと第2ケース2Yは、全体の外形を略矩形状として、周壁23の対向する開口縁を互いに連結している。
As shown in FIG. 6, the holder case 2 is divided into a first case 2X and a second case 2Y in the longitudinal direction of the battery cell 1 and in the middle of the thickness direction. The first case 2X and the second case 2Y are each provided with a holding portion 21 for inserting and holding the end of the cylindrical battery cell 1 individually. The first case 2 </ b> X and the second case 2 </ b> Y include an end surface plate portion 22 provided with a plurality of holding portions 21 into which end portions of the battery cell 1 are inserted on the inner surface, and a peripheral wall formed along the periphery of the end surface plate portion 22. 23. The first case 2 </ b> X and the second case 2 </ b> Y have an overall outer shape of a substantially rectangular shape, and the opposing opening edges of the peripheral wall 23 are connected to each other.
(保持部21)
保持部21は、電池セル1の端部を挿入して保持できる形状に形成されている。図に示す保持部21は、電池セル1の外周面に沿う形状であって、好ましくは電池セル1の外周面に接近ないし接触して、電池セル1の外周面との間を隙間なくできる形状の凹部として端面プレート部22の内側に複数設けている。複数の保持部21は、ここに挿入される電池セル1を端面プレート部22に対して略垂直姿勢で保持できるように形成されている。ここでは、電池セル1は円筒形二次電池を使用しているため、円筒形の電池セル1を収納できるように、ホルダーケース2は、内部を円柱状とする保持部21を形成している。これ等の保持部21は、図6の分解斜視図に示すように、第1ケース2Xと第2ケース2Yとを電池セル1の両側から挟み込むように接合することで、複数の電池セル1をホルダーケース2の内部の定位置に収納可能としている。ただ、保持部は、電池セルの外形に沿う形状の内形を有する筒部とし、この筒部を複数並べることもできる。 (Holding part 21)
The holding |maintenance part 21 is formed in the shape which can insert and hold | maintain the edge part of the battery cell 1. FIG. The holding portion 21 shown in the figure has a shape that follows the outer peripheral surface of the battery cell 1 and preferably has a shape that allows the outer peripheral surface of the battery cell 1 to approach or contact the outer peripheral surface of the battery cell 1 without a gap. A plurality of recesses are provided inside the end face plate portion 22. The plurality of holding portions 21 are formed so that the battery cell 1 inserted therein can be held in a substantially vertical posture with respect to the end face plate portion 22. Here, since the battery cell 1 uses a cylindrical secondary battery, the holder case 2 forms a holding portion 21 having an inner cylindrical shape so that the cylindrical battery cell 1 can be accommodated. . As shown in the exploded perspective view of FIG. 6, these holding portions 21 join the first case 2 </ b> X and the second case 2 </ b> Y so as to sandwich the battery cell 1 from both sides, thereby connecting the plurality of battery cells 1. The holder case 2 can be stored in a fixed position. However, the holding portion is a cylindrical portion having an inner shape that follows the outer shape of the battery cell, and a plurality of the cylindrical portions can be arranged.
保持部21は、電池セル1の端部を挿入して保持できる形状に形成されている。図に示す保持部21は、電池セル1の外周面に沿う形状であって、好ましくは電池セル1の外周面に接近ないし接触して、電池セル1の外周面との間を隙間なくできる形状の凹部として端面プレート部22の内側に複数設けている。複数の保持部21は、ここに挿入される電池セル1を端面プレート部22に対して略垂直姿勢で保持できるように形成されている。ここでは、電池セル1は円筒形二次電池を使用しているため、円筒形の電池セル1を収納できるように、ホルダーケース2は、内部を円柱状とする保持部21を形成している。これ等の保持部21は、図6の分解斜視図に示すように、第1ケース2Xと第2ケース2Yとを電池セル1の両側から挟み込むように接合することで、複数の電池セル1をホルダーケース2の内部の定位置に収納可能としている。ただ、保持部は、電池セルの外形に沿う形状の内形を有する筒部とし、この筒部を複数並べることもできる。 (Holding part 21)
The holding |
複数の保持部21は、第1ケース2X及び第2ケース2Yの内側にそれぞれ所定の配列で設けられている。ホルダーケース2に形成される保持部21の数は、収納する電池セル1の本数によって決定される。本実施例においては、ホルダーケース2は、第1ケース2X及び第2ケース2Yにそれぞれ66個の保持部21を設けている。図6に示すホルダーケース2の保持部21は、第2面2Bから第4面2Dに向かって9列に並べて形成されると共に、各列においては、第1面2Aから第3面2Cに向かって7~8個を等間隔で直線状に並べて、全体で66個の保持部21を設けている。したがって、このホルダーケース2は、最大で66本の電池セル1を収納できる構造としている。また、多列にわたって形成される保持部21は、隣接する列間では、ひとつの列内で隣り合う電池セル1の間に隣の列の電池セル1が位置するように、すなわち千鳥配列の状態で省スペースに電池セル1を配置できるようにしている。
The plurality of holding portions 21 are provided in a predetermined arrangement inside the first case 2X and the second case 2Y, respectively. The number of holding parts 21 formed in the holder case 2 is determined by the number of battery cells 1 to be stored. In the present embodiment, the holder case 2 is provided with 66 holding portions 21 in the first case 2X and the second case 2Y, respectively. The holding portions 21 of the holder case 2 shown in FIG. 6 are formed in 9 rows from the second surface 2B to the fourth surface 2D, and in each row, the holding portions 21 face the first surface 2A to the third surface 2C. A total of 66 holding portions 21 are provided by arranging 7 to 8 pieces in a straight line at equal intervals. Therefore, the holder case 2 has a structure that can accommodate up to 66 battery cells 1. In addition, the holding portions 21 formed over multiple rows are arranged so that the adjacent battery cells 1 are located between adjacent battery cells 1 in one row, that is, in a staggered state. Thus, the battery cell 1 can be arranged in a space-saving manner.
凹部形状に形成された保持部21の深さは、電池セル1の長さの5~30%、好ましくは10~25%、さらに好ましくは、15~25%とする。さらに、第1ケース2Xと第2ケース2Yとで、電池セル1を両側から挟み込むように接合することで、2つの保持部21で電池セル1の両端部分を収納して保持すると共に、電池セル1の中間部分をホルダーケース2の内部に表出させて、ホルダーケース2の内部に、電池セルの中間部分を表出させる中空部20を形成している。これにより、電池セル1の中間部分が隣接する各電池セルの間が離間できるため、電池セルの冷却効果を向上させることができる。
The depth of the holding portion 21 formed in the concave shape is 5 to 30%, preferably 10 to 25%, more preferably 15 to 25% of the length of the battery cell 1. Furthermore, by joining the first case 2X and the second case 2Y so as to sandwich the battery cell 1 from both sides, the two holding portions 21 store and hold both ends of the battery cell 1, and the battery cell. A hollow portion 20 is formed in the holder case 2 so that the intermediate portion of the battery cell is exposed in the holder case 2. Thereby, since each battery cell which the intermediate part of the battery cell 1 adjoins can be spaced apart, the cooling effect of a battery cell can be improved.
さらに、第1ケース2X及び第2ケース2Yは、保持部21の底面を貫通する接続孔24を端面プレート部22に開口している。この端面プレート部22は、内側に設けた保持部21に電池セル1の端部を挿入する状態で、外側面に開口された接続孔24から電極端子13を露出させている。さらに、接続孔24は、図2と図3に示すように、保持部21に挿入される電池セル1の外装缶11の外形よりも小さくして、電池セル1の通過を阻止する構造としている。これにより、保持部21に挿入される電池セル1の端部を端面プレート部22に貫通させることなく接続孔24の定位置で停止できるようにしている。端面プレート部22の接続孔24から露出される電池セル1の電極端子13は、詳細には後述するが、端面プレート部22の外側に配置されるバスバープレート4に接続される。
Furthermore, in the first case 2X and the second case 2Y, a connection hole 24 penetrating the bottom surface of the holding portion 21 is opened in the end face plate portion 22. The end surface plate portion 22 exposes the electrode terminal 13 from the connection hole 24 opened on the outer surface in a state where the end portion of the battery cell 1 is inserted into the holding portion 21 provided inside. Further, as shown in FIGS. 2 and 3, the connection hole 24 is made smaller than the outer shape of the outer can 11 of the battery cell 1 inserted into the holding portion 21 so as to prevent passage of the battery cell 1. . Thus, the end portion of the battery cell 1 inserted into the holding portion 21 can be stopped at a fixed position of the connection hole 24 without penetrating the end face plate portion 22. The electrode terminal 13 of the battery cell 1 exposed from the connection hole 24 of the end face plate portion 22 is connected to the bus bar plate 4 disposed outside the end face plate portion 22 as will be described in detail later.
図4~図6に示す第1ケース2X及び第2ケース2Yは、端面プレート部22の外側面に、バスバープレート4を配置する収納凹部25を形成している。図に示す第1ケース2X及び第2ケース2Yは、端面プレート部22の周囲に設けた周壁23を端面プレート部22の外側にも突出させており、この突出部と端面プレート部22とで形成される凹部を収納凹部25としてバスバープレート4の収納スペースとしている。図に示すホルダーケース2は、収納凹部25にバスバープレート4を配置すると共に、この収納凹部25の外側をカバー部材5で閉塞している。
The first case 2X and the second case 2Y shown in FIG. 4 to FIG. 6 have a storage recess 25 in which the bus bar plate 4 is disposed on the outer surface of the end face plate portion 22. The first case 2 </ b> X and the second case 2 </ b> Y shown in the drawing have a peripheral wall 23 provided around the end face plate part 22 protruding outside the end face plate part 22, and are formed by the protruding part and the end face plate part 22. The recessed portion to be stored is used as a storage recess 25 to store the bus bar plate 4. In the holder case 2 shown in the figure, the bus bar plate 4 is disposed in the storage recess 25 and the outside of the storage recess 25 is closed by the cover member 5.
さらに、ホルダーケース2は、図示しないが、側面である周壁23に通気口を開口することもできる。これによりホルダーケース2の内外において換気がなされて、ホルダーケース2に収納される電池セル1の放熱特性をさらに向上できる。
Furthermore, although not shown, the holder case 2 can also have a vent opening in the peripheral wall 23 that is the side surface. Thereby, ventilation is made inside and outside the holder case 2, and the heat dissipation characteristics of the battery cell 1 stored in the holder case 2 can be further improved.
(成形樹脂)
このような第1ケース2Xと第2ケース2Yは、それぞれ金型を使用した射出成形により形成される。ホルダーケース2は、絶縁性に優れた部材、好適には樹脂で構成される。このような樹脂として、PC(ポリカーボネート)やPP(ポリプロピレン)、PBT等の熱可塑性樹脂や、不飽和フェノール樹脂や不飽和ポリエステル等の熱硬化性樹脂が使用できる。なお、熱硬化性樹脂の場合、圧縮成形や射出圧縮成形により形成される。 (Molded resin)
Thefirst case 2X and the second case 2Y are formed by injection molding using a mold. The holder case 2 is made of a member having excellent insulating properties, preferably a resin. As such a resin, thermoplastic resins such as PC (polycarbonate), PP (polypropylene), and PBT, and thermosetting resins such as unsaturated phenol resins and unsaturated polyesters can be used. In the case of a thermosetting resin, it is formed by compression molding or injection compression molding.
このような第1ケース2Xと第2ケース2Yは、それぞれ金型を使用した射出成形により形成される。ホルダーケース2は、絶縁性に優れた部材、好適には樹脂で構成される。このような樹脂として、PC(ポリカーボネート)やPP(ポリプロピレン)、PBT等の熱可塑性樹脂や、不飽和フェノール樹脂や不飽和ポリエステル等の熱硬化性樹脂が使用できる。なお、熱硬化性樹脂の場合、圧縮成形や射出圧縮成形により形成される。 (Molded resin)
The
ホルダーケースを熱可塑性樹脂で成形する構造は、金型を使用した射出成形を簡単にできると共に、安価である熱可塑性樹脂を使用することで製造コストを低減できる。ただ、ホルダーケースは、電池セルの異常時に高温に加熱される虞があるので、使用する電池セルの容量や本数、使用環境、要求される耐熱性能に応じて、熱可塑性樹脂で製造することができる。
The structure in which the holder case is molded with a thermoplastic resin can simplify the injection molding using a mold, and can reduce the manufacturing cost by using an inexpensive thermoplastic resin. However, since the holder case may be heated to a high temperature when the battery cell is abnormal, it can be manufactured from a thermoplastic resin according to the capacity and number of battery cells used, the usage environment, and the required heat resistance. it can.
これに対して、ホルダーケース2を熱硬化性樹脂で成形する構造は、金型を使用した成形時において、溶融樹脂を金型に注入する時間が長くなると共に、注入後において加熱して硬化させる工程を要するため、短時間で効率よく多量生産できない問題点と、高価である熱硬化性樹脂を使用することで製造コストが高騰する問題点があった。しかしながら本発明の電池パックでは、ホルダーケース2を構成する第1ケース2Xと第2ケース2Yの間に位置決スペーサー3を介在させることにより複数の電池セル1を定位置に配置するので、第1ケース2X及び第2ケース2Yに形成される保持部21を浅くしても、電池セルの両端部を両側から挟み込みながら保持部21で保持することが可能となる。すなわち、電池セル1の端部を挿入する保持部21を浅く形成することで、金型を簡単な構造としつつ、使用する樹脂の量を低減して、製造時間を短縮しながら製造コストを低減でき、多量生産することが可能となる。また、熱硬化性樹脂製のホルダーケースは、優れた耐熱性を有するので、前述のように、電池セルに以上が生じた際に発火や発煙により高温に加熱されることがあっても、溶融されることなく隣接する電池セルへの類焼が有効に防止される。また、熱硬化性樹脂は耐薬品性にも優れているため、電池セルから排出される電解液等による弊害も防止できる。以上のような観点から、ここでは、ホルダーケースを製造する樹脂として、好ましくは熱硬化性樹脂を使用する。
In contrast, the structure in which the holder case 2 is molded with a thermosetting resin increases the time for injecting the molten resin into the mold during molding using the mold, and is heated and cured after the injection. Since a process is required, there is a problem that mass production cannot be efficiently performed in a short time, and a problem that the manufacturing cost is increased by using an expensive thermosetting resin. However, in the battery pack of the present invention, the plurality of battery cells 1 are arranged at fixed positions by interposing the positioning spacer 3 between the first case 2X and the second case 2Y constituting the holder case 2, so that the first Even if the holding portions 21 formed in the case 2X and the second case 2Y are shallow, it is possible to hold the battery cells with the holding portions 21 while sandwiching both end portions from both sides. That is, by forming the holding portion 21 into which the end of the battery cell 1 is inserted shallow, the amount of resin to be used is reduced while reducing the manufacturing cost while making the mold simple structure. Can be mass-produced. In addition, since the holder case made of thermosetting resin has excellent heat resistance, as described above, even if it is heated to high temperature due to ignition or smoke when the above occurs, it will melt Thus, similar firing to adjacent battery cells is effectively prevented. Moreover, since the thermosetting resin is also excellent in chemical resistance, it is possible to prevent adverse effects caused by the electrolyte solution discharged from the battery cell. From the above viewpoint, here, a thermosetting resin is preferably used as the resin for manufacturing the holder case.
(位置決スペーサー3)
位置決スペーサー3は、第1ケース2Xの保持部21と第2ケース2Yの保持部21との間に配置されて、複数の電池セル1の中間部を保持して、これ等の電池セル1の位置を特定する。図6に示す位置決スペーサー3は、電池セル1を貫通させて、電池セル1の中間部を保持する挿通孔3Aを複数開口してなる多孔プレートとしている。位置決スペーサー3に開口される挿通孔3Aは、上下に配置される第1ケース2X及び第2ケース2Yの保持部21と対向する位置に設けられている。さらに、挿通孔3Aは、電池セル1の外周面に接触する内形としており、電池セル1の中間部を定位置に保持できるようにしている。この位置決スペーサー3は、挿通孔3Aに挿入される電池セル1の中間部を保持することで、電池セル1をホルダーケース2内の定位置に位置決めできるようにしている。 (Positioning spacer 3)
Thepositioning spacer 3 is disposed between the holding part 21 of the first case 2X and the holding part 21 of the second case 2Y, holds the intermediate part of the plurality of battery cells 1, and these battery cells 1 Specify the position of. The positioning spacer 3 shown in FIG. 6 is a perforated plate having a plurality of insertion holes 3 </ b> A that penetrate the battery cell 1 and hold the middle part of the battery cell 1. 3 A of insertion holes opened by the positioning spacer 3 are provided in the position facing the holding | maintenance part 21 of 1st case 2X and 2nd case 2Y arrange | positioned up and down. Further, the insertion hole 3 </ b> A has an inner shape that comes into contact with the outer peripheral surface of the battery cell 1, so that an intermediate portion of the battery cell 1 can be held at a fixed position. The positioning spacer 3 holds the middle part of the battery cell 1 inserted into the insertion hole 3 </ b> A so that the battery cell 1 can be positioned at a fixed position in the holder case 2.
位置決スペーサー3は、第1ケース2Xの保持部21と第2ケース2Yの保持部21との間に配置されて、複数の電池セル1の中間部を保持して、これ等の電池セル1の位置を特定する。図6に示す位置決スペーサー3は、電池セル1を貫通させて、電池セル1の中間部を保持する挿通孔3Aを複数開口してなる多孔プレートとしている。位置決スペーサー3に開口される挿通孔3Aは、上下に配置される第1ケース2X及び第2ケース2Yの保持部21と対向する位置に設けられている。さらに、挿通孔3Aは、電池セル1の外周面に接触する内形としており、電池セル1の中間部を定位置に保持できるようにしている。この位置決スペーサー3は、挿通孔3Aに挿入される電池セル1の中間部を保持することで、電池セル1をホルダーケース2内の定位置に位置決めできるようにしている。 (Positioning spacer 3)
The
以上の電池パック10は、複数の電池セル1を位置決スペーサー3で位置決めしながら、第1ケース2Xと第2ケース2Yとで電池セル1の両端部を両側から挟み込むように保持することで、多数の電池セル1を位置決めしながら簡単に対向する保持部21に挿入することができる。例えば、図7に示すように第1ケース2Xの開口部に位置決スペーサー3を配置した状態で、位置決スペーサー3の挿通孔3Aに電池セル1を挿通し、挿入側の端部を第1ケース2Xの保持部21に挿入することで、電池セル1を位置決めしながら第1ケース2Xに配置できる(図7B参照)。この状態で、第1ケース2Xに配置された多数の電池セル1は、下端が第1ケース2Xの保持部21に挿入されると共に、中間部が位置決スペーサー3の挿通孔3Aで位置決めされるので、上側の端部が前後左右に移動することなく、第2ケース2Yの保持部21に挿入されにくくなる自体を解消できる。すなわち、第1ケース2Xに配置された多数の電池セル1は、中間部が位置決スペーサー3によって定位置に保持されることで、上側の端部の位置が位置決めされて、第2ケース2Yを上から被せる状態で確実に電池セル1の上側端部を第2ケース2Yの保持部21に挿入できる(図7C参照)。この構造は、実質的には、電池セル1の約半分の長さを収納する電池収納部と同じ状態で電池セルを位置決めしながら保持できる。したがって、反対側の端部を速やかに対向する保持部に挿入して、電池セル1の両端部を両側から挟み込むように保持できる。これにより、組立時の作業能率を向上できる。
The above battery pack 10 holds the plurality of battery cells 1 with the positioning spacer 3 and holds the both ends of the battery cell 1 from both sides between the first case 2X and the second case 2Y. A large number of battery cells 1 can be easily inserted into the opposing holding portions 21 while being positioned. For example, as shown in FIG. 7, with the positioning spacer 3 disposed in the opening of the first case 2X, the battery cell 1 is inserted into the insertion hole 3A of the positioning spacer 3, and the end on the insertion side is the first. The battery cell 1 can be positioned and positioned in the first case 2X by being inserted into the holding portion 21 of the case 2X (see FIG. 7B). In this state, a large number of battery cells 1 arranged in the first case 2X have their lower ends inserted into the holding portion 21 of the first case 2X, and their intermediate portions are positioned by the insertion holes 3A of the positioning spacer 3. Therefore, it is possible to eliminate the fact that the upper end portion is not easily inserted into the holding portion 21 of the second case 2Y without moving back and forth, left and right. That is, the battery cell 1 arranged in the first case 2X has the middle portion held in place by the positioning spacer 3, so that the position of the upper end is positioned, and the second case 2Y is The upper end portion of the battery cell 1 can be reliably inserted into the holding portion 21 of the second case 2Y while being covered from above (see FIG. 7C). This structure can hold the battery cell while positioning the battery cell substantially in the same state as the battery storage part that stores about half the length of the battery cell 1. Therefore, the opposite end portion can be quickly inserted into the opposing holding portion, and both end portions of the battery cell 1 can be held so as to be sandwiched from both sides. Thereby, the work efficiency at the time of an assembly can be improved.
位置決スペーサー3は、その厚さを薄くすることで電池セル1を挿通しやすくできると共に、電池セル1の中間部を保持する状態で、ホルダーケース2内に表出する領域を広くすることができる。したがって、位置決スペーサーの厚さは、好ましくは、電池セルの全長の10%以下とすることができる。このような位置決スペーサー3は、樹脂製とし、あるいは金属製とすることもできる。
The positioning spacer 3 can be easily inserted through the battery cell 1 by reducing its thickness, and the region exposed in the holder case 2 can be widened while holding the middle part of the battery cell 1. it can. Therefore, the thickness of the positioning spacer can be preferably 10% or less of the total length of the battery cell. Such positioning spacer 3 can be made of resin or metal.
以上の位置決スペーサー3は、第1ケース2Xと第2ケース2Yの対向する周壁23で挟着されてホルダーケース2の中間に配置されている。図に示すホルダーケース2は、下ケースである第1ケース2Xの周壁23の開口縁に沿って位置決スペーサー3を嵌合させる段差凹部23Aを設けている。このホルダーケース2は、位置決スペーサー3を第1ケース2Xの段差凹部23Aに嵌合させて位置決めする状態で、第1ケース2Xと第2ケース2Yの対向する周壁23で位置決スペーサー3を挟着して定位置に固定する。ただ、段差凹部は、第2ケースに設けることもできる。また、位置決スペーサーは、接着して、あるいはネジ止めや係止構造によりホルダーケースに固定することもできる。
The above positioning spacer 3 is sandwiched between the peripheral walls 23 facing each other of the first case 2X and the second case 2Y, and is arranged in the middle of the holder case 2. The holder case 2 shown in the figure is provided with a step recess 23A for fitting the positioning spacer 3 along the opening edge of the peripheral wall 23 of the first case 2X which is the lower case. In the holder case 2, the positioning spacer 3 is sandwiched between the opposing peripheral walls 23 of the first case 2X and the second case 2Y in a state where the positioning spacer 3 is fitted and positioned in the stepped recess 23A of the first case 2X. Wear it and fix it in place. However, the step recess can be provided in the second case. The positioning spacer can also be fixed to the holder case by bonding or by screwing or locking structure.
以上のようにして、内部に複数の電池セル1が収納されるホルダーケース2は、図6に示すように、第1ケース2Xと第2ケース2Yの対向位置に設けた連結ボス29に連結ネジ39がねじ込まれて第1ケース2Xと第2ケース2Yが固定される。図に示す第1ケース2Xは、端面プレート部22と周壁23に連結ボス29を一体的に成形して設けている。ただ、第1ケースと第2ケースは、連結ボルトとナットを介して互いに連結することもできる。
As described above, the holder case 2 in which the plurality of battery cells 1 are housed is connected to the connection boss 29 provided at the opposing position of the first case 2X and the second case 2Y as shown in FIG. 39 is screwed to fix the first case 2X and the second case 2Y. In the first case 2X shown in the figure, a connecting boss 29 is integrally formed on the end plate portion 22 and the peripheral wall 23. However, the first case and the second case can be connected to each other via a connecting bolt and a nut.
(バスバープレート4)
さらに、図2~図5の電池パック10は、ホルダーケース2の上下の外側に、ホルダーケース2に収納される複数の電池セル1の両端の電極端子13を接続するバスバープレート4を備えている。バスバープレート4は、端面プレート部22の外側をカバーする平板状の金属板であって、端面プレート部22の接続孔24から表出する複数の電池セル1の電極端子13を接続するために複数の貫通孔40を開口している。これ等の貫通孔40は、端面プレート部22に開口された接続孔24と対向する位置に開口されている。 (Bus bar plate 4)
Further, thebattery pack 10 of FIGS. 2 to 5 includes a bus bar plate 4 on the upper and lower outer sides of the holder case 2 for connecting the electrode terminals 13 at both ends of the plurality of battery cells 1 stored in the holder case 2. . The bus bar plate 4 is a flat metal plate that covers the outside of the end face plate portion 22, and a plurality of bus bar plates 4 are connected to connect the electrode terminals 13 of the plurality of battery cells 1 exposed from the connection holes 24 of the end face plate portion 22. The through hole 40 is opened. These through holes 40 are opened at positions facing the connection holes 24 opened in the end face plate portion 22.
さらに、図2~図5の電池パック10は、ホルダーケース2の上下の外側に、ホルダーケース2に収納される複数の電池セル1の両端の電極端子13を接続するバスバープレート4を備えている。バスバープレート4は、端面プレート部22の外側をカバーする平板状の金属板であって、端面プレート部22の接続孔24から表出する複数の電池セル1の電極端子13を接続するために複数の貫通孔40を開口している。これ等の貫通孔40は、端面プレート部22に開口された接続孔24と対向する位置に開口されている。 (Bus bar plate 4)
Further, the
バスバープレート4は、ホルダーケース2に収納される複数の電池セル1の電極端子13に電気接続される。図に示す電池パック10は、ホルダーケース2の下ケースである第1ケース2Xの下面側であって、端面プレート部22の外側に配置される第1のバスバープレート4Xと、上ケースである第2ケース2Yの上面側であって、端面プレート部22の外側に配置される第2のバスバープレート4Yとを備えている。これ等のバスバープレート4は、端面プレート部22の全体を被覆する形状と大きさを有しており、ホルダーケース2に収納される全ての電池セル1の電極端子13を接続できる大きさとしている。バスバープレート4は、これを貫通する止ネジ38を介してホルダーケース2に固定される。この構造は、バスバープレート4をホルダーケース2の定位置に確実に固定できる。
The bus bar plate 4 is electrically connected to the electrode terminals 13 of the plurality of battery cells 1 housed in the holder case 2. The battery pack 10 shown in the drawing is a first bus bar plate 4X disposed on the lower surface side of the first case 2X which is the lower case of the holder case 2 and outside the end surface plate portion 22, and a first case which is an upper case. A second bus bar plate 4Y disposed on the upper surface side of the two cases 2Y and outside the end surface plate portion 22 is provided. These bus bar plates 4 have a shape and a size that cover the entire end surface plate portion 22, and are sized so that the electrode terminals 13 of all the battery cells 1 accommodated in the holder case 2 can be connected. . The bus bar plate 4 is fixed to the holder case 2 via a set screw 38 passing through the bus bar plate 4. With this structure, the bus bar plate 4 can be securely fixed to a fixed position of the holder case 2.
バスバープレート4は、図8~図10に示すように、リード板45を介して電池セル1に接続される。図8と図9に示すリード板45は、薄い金属板であって、バスバープレート4の貫通孔40と対向する位置に連結孔45Aを開口すると共に、この連結孔45Aに位置して接続片46、47を備えている。接続片46、47は、リード板45に一体的に連結して形成されている。リード板45は、接続片46、47がバスバープレート4に開口された貫通孔40に位置するようにバスバープレート4に固定されている。図8と図9に示すバスバープレート4は、3枚のリード板45が連結されている。
The bus bar plate 4 is connected to the battery cell 1 via the lead plate 45 as shown in FIGS. The lead plate 45 shown in FIGS. 8 and 9 is a thin metal plate. The lead plate 45 has a connection hole 45A at a position facing the through hole 40 of the bus bar plate 4 and is connected to the connection piece 46 at the connection hole 45A. 47 are provided. The connection pieces 46 and 47 are integrally connected to the lead plate 45. The lead plate 45 is fixed to the bus bar plate 4 so that the connection pieces 46 and 47 are located in the through holes 40 opened in the bus bar plate 4. The bus bar plate 4 shown in FIGS. 8 and 9 is connected to three lead plates 45.
バスバープレート4は、リード板45の接続片46、47が電池セル1の電極端子13に溶着されて、電池セル1に接続される。したがって、接続片46、47は、接続孔24から表出する接続端子13と対向する位置に配置されている。接続片46、47は、図10に示すように、溶接ロッド60が押圧される状態で、接続端子13に溶着される形状と大きさに形成されている。さらに、図8に示すリード板45は、連結孔45Aの開口縁と接続片46との間に溶断部48を形成している。図に示す溶断部48は、細長い線状であってクランク状に形成されており、過電流が流れる状態で溶断されて、電池セル1の電極端子13をリード板45から確実に遮断できる構造としている。図に示すリード板45は、細く形成された溶断部48を保護するために、固定部材49である接着テープを溶断部の表面に張着している。この接着テープは、熱により溶融されるテープで、溶断部48が溶断される状態では、接着テープも溶融されて切断されるようにしている。
The bus bar plate 4 is connected to the battery cell 1 by connecting the connection pieces 46 and 47 of the lead plate 45 to the electrode terminal 13 of the battery cell 1. Therefore, the connection pieces 46 and 47 are disposed at positions facing the connection terminals 13 exposed from the connection holes 24. As shown in FIG. 10, the connection pieces 46 and 47 are formed in a shape and size that are welded to the connection terminal 13 in a state where the welding rod 60 is pressed. Further, the lead plate 45 shown in FIG. 8 has a fusing part 48 formed between the opening edge of the coupling hole 45 </ b> A and the connection piece 46. The fusing part 48 shown in the drawing is a long and thin line and is formed in a crank shape. The fusing part 48 is cut in a state where an overcurrent flows, so that the electrode terminal 13 of the battery cell 1 can be reliably cut off from the lead plate 45. Yes. In the lead plate 45 shown in the figure, an adhesive tape as a fixing member 49 is stuck to the surface of the fusing part in order to protect the fusing part 48 formed thin. This adhesive tape is a tape that is melted by heat. In a state where the fusing part 48 is melted, the adhesive tape is also melted and cut.
リード板45が固定されたバスバープレート4は、図10に示すように、端面プレート部22の外側面に積層される状態で配置され、リード板45の接続片47が端面プレート部22の接続孔24に配置される。接続孔24に配置された接続片47は、電池セル1の電極端子13に溶着される。溶接時において、溶接ロッド60は、図10に示すように、リード板45の接続片47を端面プレート部22の接続孔24から表出する電極端子13に押圧して溶着する。溶接ロッド60は、バスバープレート4の貫通孔40を通過して接続片47を電池セル1の電極端子13に押圧する状態で溶着する。以上のようにして、ホルダーケース2に収納された複数の電池セル1の両端の電極端子13が、第1のバスバープレート4Xと第2のバスバープレート4Yとに接続されることで複数の電池セル1が並列に接続される。
As shown in FIG. 10, the bus bar plate 4 to which the lead plate 45 is fixed is arranged in a state of being laminated on the outer surface of the end face plate portion 22, and the connection piece 47 of the lead plate 45 is connected to the connection hole of the end face plate portion 22. 24. The connection piece 47 disposed in the connection hole 24 is welded to the electrode terminal 13 of the battery cell 1. At the time of welding, as shown in FIG. 10, the welding rod 60 is welded by pressing the connection piece 47 of the lead plate 45 to the electrode terminal 13 exposed from the connection hole 24 of the end face plate portion 22. The welding rod 60 is welded while passing through the through hole 40 of the bus bar plate 4 and pressing the connection piece 47 against the electrode terminal 13 of the battery cell 1. As described above, the electrode terminals 13 at both ends of the plurality of battery cells 1 housed in the holder case 2 are connected to the first bus bar plate 4X and the second bus bar plate 4Y, whereby the plurality of battery cells are connected. 1 are connected in parallel.
さらに、図4と図5に示すバスバープレート4は、端面プレート部22の外周縁から周壁23に沿って折曲された折曲片41、43を備えており、折曲片41、43の先端部をさらに折曲して外部接続部42、44としている。図1~図5に示す電池パック10は、外形を矩形状とするホルダーケース2の対向する側面であって、第1面2Aに折曲片41を配置し、第3面2Cに折曲片43を配置している。このように一対のバスバープレート4の折曲片41、43をホルダーケース2の対向する側面に配置することで、これ等の折曲片41、43が互いに干渉するのを阻止している。
Further, the bus bar plate 4 shown in FIGS. 4 and 5 includes bent pieces 41 and 43 bent along the peripheral wall 23 from the outer peripheral edge of the end face plate portion 22, and the distal ends of the bent pieces 41 and 43. The portions are further bent to form external connection portions 42 and 44. The battery pack 10 shown in FIGS. 1 to 5 is a side surface facing the holder case 2 having a rectangular outer shape, and a bent piece 41 is disposed on the first surface 2A, and the bent piece is formed on the third surface 2C. 43 is arranged. Thus, by arrange | positioning the bending pieces 41 and 43 of a pair of bus-bar plate 4 in the side surface which the holder case 2 opposes, these bending pieces 41 and 43 are prevented from interfering with each other.
第1のバスバープレート4Xは、ホルダーケース2の第1面2Aに沿って折曲片41を配置している。この折曲片41は、第1ケース2Xの下面側から第1面2Aに沿って立ち上がるように形成されると共に、先端部を水平方向に折曲して外部接続部42としている。ホルダーケース2は、第1のバスバープレート4Xの折曲片41が配置される第1面2Aに、折曲片41を案内する嵌合凹部26を形成している。このように、折曲片41を嵌合凹部26に案内することで、折曲片41を定位置に配置しながら、折曲片41がホルダーケース2の表面側に突出するのを防止している。
The first bus bar plate 4X has a bent piece 41 arranged along the first surface 2A of the holder case 2. The bent piece 41 is formed so as to rise from the lower surface side of the first case 2X along the first surface 2A, and the front end portion is bent in the horizontal direction to form the external connection portion 42. The holder case 2 has a fitting recess 26 that guides the bent piece 41 on the first surface 2A on which the bent piece 41 of the first bus bar plate 4X is disposed. Thus, by guiding the bent piece 41 to the fitting recess 26, the bent piece 41 is prevented from projecting to the surface side of the holder case 2 while the bent piece 41 is disposed at a fixed position. Yes.
第2のバスバープレート4Yは、ホルダーケース2の第3面2Cに沿って折曲片43を配置している。この折曲片43は、第2ケース2Yの上面側から第2面2Cに沿って垂れ下がるように形成されると共に、先端部を水平方向に折曲して外部接続部44としている。ホルダーケース2は、第2のバスバープレート4Yの折曲片43が配置される第3面2Cに、折曲片43を案内する嵌合凹部27を形成している。さらに、この嵌合凹部27には外部接続部44を配置する段差面28を形成している。このように、折曲片43及び外部接続部44を嵌合凹部27に案内することで、折曲片43及び外部接続部44を定位置に配置しながら、折曲片43及び外部接続部44がホルダーケース2の表面側に突出するのを防止している。また、段差面28において、外部接続部44を確実に外部接続できるようにしている。
The second bus bar plate 4Y has a bent piece 43 disposed along the third surface 2C of the holder case 2. The bent piece 43 is formed so as to hang down from the upper surface side of the second case 2Y along the second surface 2C, and the distal end portion thereof is bent in the horizontal direction to form an external connection portion 44. The holder case 2 has a fitting recess 27 for guiding the bent piece 43 on the third surface 2C where the bent piece 43 of the second bus bar plate 4Y is arranged. Further, a stepped surface 28 on which the external connection portion 44 is disposed is formed in the fitting recess 27. In this way, by guiding the bent piece 43 and the external connection portion 44 to the fitting recess 27, the bent piece 43 and the external connection portion 44 are arranged while the bent piece 43 and the external connection portion 44 are arranged at fixed positions. Is prevented from projecting to the surface side of the holder case 2. In addition, the external connection portion 44 can be reliably externally connected to the stepped surface 28.
(カバー部材)
さらに、電池パック10は、図1~図6に示すように、バスバープレート4が固定されたホルダーケース2の上面側及び下面側の外側に位置して、バスバープレート4を被覆するカバー部材5を備えている。図に示すカバー部材5は、バスバープレート4の表面を被覆して絶縁している。カバー部材5は、絶縁性部材とすることが好ましく、好適には樹脂製とする。これにより、絶縁性と軽量化を安価に実現できる。また耐久性と熱伝導性を考慮すれば、アルミニウムなど金属製のカバー部材も利用できる。この場合は、金属製のカバー部材の表面を、ラミネートフィルムやビニールなどの絶縁性部材で被覆し、あるいは絶縁性の塗料を塗布して絶縁することもできる。 (Cover member)
Further, as shown in FIGS. 1 to 6, thebattery pack 10 is provided with a cover member 5 that covers the bus bar plate 4 and is positioned outside the upper surface side and the lower surface side of the holder case 2 to which the bus bar plate 4 is fixed. I have. The cover member 5 shown in the figure covers and insulates the surface of the bus bar plate 4. The cover member 5 is preferably an insulating member, and is preferably made of resin. Thereby, insulation and weight reduction can be realized at low cost. In view of durability and thermal conductivity, a metal cover member such as aluminum can also be used. In this case, the surface of the metal cover member can be covered with an insulating member such as a laminate film or vinyl, or can be insulated by applying an insulating paint.
さらに、電池パック10は、図1~図6に示すように、バスバープレート4が固定されたホルダーケース2の上面側及び下面側の外側に位置して、バスバープレート4を被覆するカバー部材5を備えている。図に示すカバー部材5は、バスバープレート4の表面を被覆して絶縁している。カバー部材5は、絶縁性部材とすることが好ましく、好適には樹脂製とする。これにより、絶縁性と軽量化を安価に実現できる。また耐久性と熱伝導性を考慮すれば、アルミニウムなど金属製のカバー部材も利用できる。この場合は、金属製のカバー部材の表面を、ラミネートフィルムやビニールなどの絶縁性部材で被覆し、あるいは絶縁性の塗料を塗布して絶縁することもできる。 (Cover member)
Further, as shown in FIGS. 1 to 6, the
カバー部材5は、ホルダーケース2の上下面を被覆する形状と大きさを有している。図に示すカバー部材5は、ホルダーケース2の外形に沿う平板状の閉塞プレート部51とこの閉塞プレート部51の周囲に連結してなるカバー部52とを備えている。カバー部52は、ホルダーケース2の外周面に設けた係止凸部31に係止して固定される。図2~図5に示すカバー部52は、係止凸部31を係止する係止部53として係止穴を開口しているこのカバー部材5は、カバー部52をホルダーケース2の係止凸部31に係止状態で係止させて定位置に固定される。
The cover member 5 has a shape and a size covering the upper and lower surfaces of the holder case 2. The cover member 5 shown in the figure includes a flat closing plate portion 51 that follows the outer shape of the holder case 2 and a cover portion 52 that is connected to the periphery of the closing plate portion 51. The cover 52 is locked and fixed to a locking projection 31 provided on the outer peripheral surface of the holder case 2. The cover 52 shown in FIGS. 2 to 5 has a locking hole as a locking portion 53 for locking the locking projection 31. The cover member 5 locks the cover 52 with the holder case 2. The protrusion 31 is locked in a locked state in a locked state.
図1~図5に示すカバー部材5は、第1ケース2X側の外側をカバーする第1のカバー部材5Xと、第2ケース2Y側の外側をカバーする第2のカバー部材5Yとを備えている。第1のカバー部材5Xは、第1ケース2Xの4つの側面をカバーする状態でカバー部52を設けている。第2のカバー部材5Yは、第2ケース2Yの4つの側面のうち第1面2Aを除く3面に対向してカバー部52を設けている。第2のカバー部材5Yは、第2面2B~第4面2Dに対して、前述の係止構造で固定すると共に、第1面においては、第2のバスバープレート4Yの折曲片43を通過させるべくカバー部52を設けることなく開放している
The cover member 5 shown in FIGS. 1 to 5 includes a first cover member 5X that covers the outside on the first case 2X side, and a second cover member 5Y that covers the outside on the second case 2Y side. Yes. The first cover member 5X is provided with a cover portion 52 in a state of covering the four side surfaces of the first case 2X. The second cover member 5Y is provided with a cover portion 52 that faces three surfaces of the four side surfaces of the second case 2Y except the first surface 2A. The second cover member 5Y is fixed to the second surface 2B to the fourth surface 2D with the above-described locking structure, and passes through the bent piece 43 of the second bus bar plate 4Y on the first surface. Open without providing cover 52 to allow
以上の電池パック10は、図7に示す以下の工程で組み立てられる。
(1)図7Aに示すように、第1ケース2Xの開口部に位置決スペーサー3を配置する。位置決スペーサー3は、例えば、その外周縁が、第1ケース2Xの周壁23の開口縁に沿って形成された段差凹部23Aに嵌合状態で配置されて定位置に固定される。
(2)図7Bに示すように、第1ケース2Xの開口部に配置された位置決スペーサー3の挿通孔3Aに電池セル1を挿通すると共に、挿入側の端部を第1ケース2Xの保持部21に挿入する。この状態で、第1ケース2Xに配置された多数の電池セル1は、下端が第1ケース2Xの保持部21に挿入されると共に、中間部が位置決スペーサー3の挿通孔3Aで位置決めされて定位置に固定される。
(3)図7Cに示すように、第2ケース2Yを上から被せる状態で降下させて、第2ケース2Yの保持部21に電池セル1の上側端部を案内する。このとき、複数の電池セル1は、上端部が定位置に固定されているので、この上端部を第2ケース2Yの保持部21に速やかに案内して挿入できる。第1ケース2Xと第2ケース2Yは、複数の電池セル1の両端部をそれぞれの保持部21で保持する状態で互いに連結されて、ホルダーケース2の内部に複数の電池セル1が収納される。
(4)さらに、図7Dに示すように、ホルダーケース2の下面側に第1のバスバープレート4Xを配置して複数の電池セル1の一方の電極端子13を接続した後、第1のバスバープレート4Xの下方に第1のカバー部材5Xを配置してホルダーケース2に連結する。また、ホルダーケース2の上面側に第2のバスバープレート4Yを配置して複数の電池セル1の他方の電極端子を接続した後、第2のバスバープレート4Yの上方に第2のカバー部材5Yを配置してホルダーケース2に連結する。 Theabove battery pack 10 is assembled in the following steps shown in FIG.
(1) As shown in FIG. 7A, thepositioning spacer 3 is disposed in the opening of the first case 2X. The positioning spacer 3 is, for example, arranged in a fitted state in a stepped recess 23A formed along the opening edge of the peripheral wall 23 of the first case 2X and fixed to a fixed position.
(2) As shown in FIG. 7B, thebattery cell 1 is inserted into the insertion hole 3A of the positioning spacer 3 disposed in the opening of the first case 2X, and the end on the insertion side is held by the first case 2X. Insert into part 21. In this state, a large number of battery cells 1 arranged in the first case 2X have their lower ends inserted into the holding portion 21 of the first case 2X, and their intermediate portions are positioned by the insertion holes 3A of the positioning spacer 3. Fixed in place.
(3) As shown in FIG. 7C, thesecond case 2 </ b> Y is lowered while being covered from above, and the upper end portion of the battery cell 1 is guided to the holding portion 21 of the second case 2 </ b> Y. At this time, since the upper ends of the plurality of battery cells 1 are fixed in place, the upper ends can be quickly guided and inserted into the holding portion 21 of the second case 2Y. The first case 2 </ b> X and the second case 2 </ b> Y are connected to each other in a state where both ends of the plurality of battery cells 1 are held by the respective holding portions 21, and the plurality of battery cells 1 are accommodated inside the holder case 2. .
(4) Further, as shown in FIG. 7D, after the firstbus bar plate 4X is arranged on the lower surface side of the holder case 2 and one electrode terminal 13 of the plurality of battery cells 1 is connected, the first bus bar plate A first cover member 5X is arranged below 4X and connected to the holder case 2. Further, after the second bus bar plate 4Y is arranged on the upper surface side of the holder case 2 and the other electrode terminals of the plurality of battery cells 1 are connected, the second cover member 5Y is disposed above the second bus bar plate 4Y. Arrange and connect to the holder case 2.
(1)図7Aに示すように、第1ケース2Xの開口部に位置決スペーサー3を配置する。位置決スペーサー3は、例えば、その外周縁が、第1ケース2Xの周壁23の開口縁に沿って形成された段差凹部23Aに嵌合状態で配置されて定位置に固定される。
(2)図7Bに示すように、第1ケース2Xの開口部に配置された位置決スペーサー3の挿通孔3Aに電池セル1を挿通すると共に、挿入側の端部を第1ケース2Xの保持部21に挿入する。この状態で、第1ケース2Xに配置された多数の電池セル1は、下端が第1ケース2Xの保持部21に挿入されると共に、中間部が位置決スペーサー3の挿通孔3Aで位置決めされて定位置に固定される。
(3)図7Cに示すように、第2ケース2Yを上から被せる状態で降下させて、第2ケース2Yの保持部21に電池セル1の上側端部を案内する。このとき、複数の電池セル1は、上端部が定位置に固定されているので、この上端部を第2ケース2Yの保持部21に速やかに案内して挿入できる。第1ケース2Xと第2ケース2Yは、複数の電池セル1の両端部をそれぞれの保持部21で保持する状態で互いに連結されて、ホルダーケース2の内部に複数の電池セル1が収納される。
(4)さらに、図7Dに示すように、ホルダーケース2の下面側に第1のバスバープレート4Xを配置して複数の電池セル1の一方の電極端子13を接続した後、第1のバスバープレート4Xの下方に第1のカバー部材5Xを配置してホルダーケース2に連結する。また、ホルダーケース2の上面側に第2のバスバープレート4Yを配置して複数の電池セル1の他方の電極端子を接続した後、第2のバスバープレート4Yの上方に第2のカバー部材5Yを配置してホルダーケース2に連結する。 The
(1) As shown in FIG. 7A, the
(2) As shown in FIG. 7B, the
(3) As shown in FIG. 7C, the
(4) Further, as shown in FIG. 7D, after the first
以上の電池パック10は、図6に示すように、ホルダーケース2に設けた66個の保持部21の内、1箇所を除く65箇所に電池セル1を収納している。すなわち、この電池パック10は、電池容量を4.62Ah/セルとする65本の電池セル1をバスバープレート4を介して並列に接続して、出力電圧が約3V~4.15Vの大容量の電池パック10を構成している。なお、ホルダーケース2に収納される電池セル1の数、配列及び接続に関してはこれに限られるものではなく、必要とされる電圧や出力容量によって変更が可能なことは言うまでもない。
As shown in FIG. 6, the battery pack 10 described above stores the battery cells 1 in 65 places except for one place among the 66 holding portions 21 provided in the holder case 2. That is, the battery pack 10 has 65 battery cells 1 having a battery capacity of 4.62 Ah / cell connected in parallel via the bus bar plate 4 and has a large capacity of about 3V to 4.15V. A battery pack 10 is configured. It should be noted that the number, arrangement and connection of the battery cells 1 stored in the holder case 2 are not limited to this, and needless to say, it can be changed depending on the required voltage and output capacity.
さらに、以上の電池パック10は、図11に示すようにして複数の電池パック10を直列に接続することができる。図11では、左側に位置する電池パック10の右側面に配置された第2のバスバープレート4Yの外部連結部44に、右側に位置する電池パック10の左側面に配置された第1のバスバープレート4Xの外部連結部42を接続する状態を示している。互いに積層される外部連結部42、44同士は、嵌合凹部27において、連結ネジ61がねじ込まれてホルダーケース2に固定される。このように、互いに隣接する電池パックの対向する外部連結部42、44同士を嵌合凹部27の内側で連結することで、外部との意図しない接触を確実に防止しながら接続できる。
Furthermore, the battery pack 10 described above can connect a plurality of battery packs 10 in series as shown in FIG. In FIG. 11, the first bus bar plate disposed on the left side surface of the battery pack 10 positioned on the right side is connected to the external connection portion 44 of the second bus bar plate 4Y disposed on the right side surface of the battery pack 10 positioned on the left side. The state which connects the 4X external connection part 42 is shown. The external connection portions 42 and 44 stacked on each other are fixed to the holder case 2 by the connection screw 61 being screwed in the fitting recess 27. In this way, by connecting the external connection portions 42 and 44 facing each other in the battery packs adjacent to each other inside the fitting recess 27, connection can be made while reliably preventing unintended contact with the outside.
本発明は、複数の電池セルをホルダーケース内において中空状に保持してなる電池パックであって、載置型の蓄電用設備の電源として、あるいは種々の電池機器のバックアップ用電源として好適に利用できる。
The present invention is a battery pack in which a plurality of battery cells are held in a hollow shape in a holder case, and can be suitably used as a power source for a mounting-type power storage facility or as a backup power source for various battery devices. .
1…電池セル
2…ホルダーケース
2X…第1ケース
2Y…第2ケース
2A…第1面
2B…第2面
2C…第3面
2D…第4面
3…位置決スペーサー
3A…挿通孔
4…バスバープレート
4X…第1のバスバープレート
4Y…第2のバスバープレート
5…カバー部材
5X…第1のカバー部材
5Y…第2のカバー部材
10…電池パック
11…外装缶
12…封口板
13…電極端子
20…中空部
21…保持部
22…端面プレート部
23…周壁
23A…段差凹部
24…接続孔
25…収納凹部
26…嵌合凹部
27…嵌合凹部
28…段差面
29…連結ボス
31…係止凸部
38…止ネジ
39…連結ネジ
40…貫通孔
41…折曲片
42…外部接続部
43…折曲片
44…外部接続部
45…リード板
45A…連結孔
46…接続片
47…接続片
48…溶断部
49…固定部材
51…閉塞プレート部
52…カバー部
53…係止部
60…溶着ロッド
61…連結ネジ
91…電池セル
92…電池ホルダ
92X…分割ケース
92Y…分割ケース
93…電池収納部
DESCRIPTION OFSYMBOLS 1 ... Battery cell 2 ... Holder case 2X ... 1st case 2Y ... 2nd case 2A ... 1st surface 2B ... 2nd surface 2C ... 3rd surface 2D ... 4th surface 3 ... Positioning spacer 3A ... Insertion hole 4 ... Bus bar Plate 4X ... 1st bus bar plate 4Y ... 2nd bus bar plate 5 ... Cover member 5X ... 1st cover member 5Y ... 2nd cover member 10 ... Battery pack 11 ... Exterior can 12 ... Sealing plate 13 ... Electrode terminal 20 ... hollow part 21 ... holding part 22 ... end face plate part 23 ... peripheral wall 23A ... step recess 24 ... connection hole 25 ... storage recess 26 ... fitting recess 27 ... fitting recess 28 ... step surface 29 ... connecting boss 31 ... locking protrusion Portion 38 ... Set screw 39 ... Connection screw 40 ... Through hole 41 ... Bending piece 42 ... External connection part 43 ... Bending piece 44 ... External connection part 45 ... Lead plate 45A ... Connection hole 46 ... Connection piece 47 ... Connection piece 48 ... Fusing part 49 ... Fixing member 1 ... closing plate part 52 ... cover portion 53 ... locking portion 60 ... welding rod 61 ... connecting screw 91 ... battery cell 92 ... Battery holder 92X ... split case 92Y ... split case 93 ... battery housing
2…ホルダーケース
2X…第1ケース
2Y…第2ケース
2A…第1面
2B…第2面
2C…第3面
2D…第4面
3…位置決スペーサー
3A…挿通孔
4…バスバープレート
4X…第1のバスバープレート
4Y…第2のバスバープレート
5…カバー部材
5X…第1のカバー部材
5Y…第2のカバー部材
10…電池パック
11…外装缶
12…封口板
13…電極端子
20…中空部
21…保持部
22…端面プレート部
23…周壁
23A…段差凹部
24…接続孔
25…収納凹部
26…嵌合凹部
27…嵌合凹部
28…段差面
29…連結ボス
31…係止凸部
38…止ネジ
39…連結ネジ
40…貫通孔
41…折曲片
42…外部接続部
43…折曲片
44…外部接続部
45…リード板
45A…連結孔
46…接続片
47…接続片
48…溶断部
49…固定部材
51…閉塞プレート部
52…カバー部
53…係止部
60…溶着ロッド
61…連結ネジ
91…電池セル
92…電池ホルダ
92X…分割ケース
92Y…分割ケース
93…電池収納部
DESCRIPTION OF
Claims (9)
- 筒状で有底の外装缶の開口部を封口板で閉塞してなる複数の電池セルと、
前記複数の電池セルを互いに平行な姿勢とし、かつ各電池セルの両端に設けられた電極端子を同一面に配置する姿勢で保持するホルダーケースと、
を備え、
前記ホルダーケースは、
前記電池セルの一方の端部を挿入して保持する保持部を内側に複数設けた第1ケースと、
前記電池セルの他方の端部を挿入して保持する保持部を内側に複数設けた第2ケースとを備え、
前記第1ケースと前記第2ケースで前記複数の電池セルを長手方向の両側から挟持して、前記複数の電池セルの両端部を前記保持部で保持すると共に、該複数の電池セルの中間部を前記ホルダーケース内に表出させる構造としており、
さらに、前記第1ケースの保持部と前記第2ケースの保持部との間に配置されて、前記複数の電池セルの中間部を保持して位置決めする位置決スペーサーを備えることを特徴とする電池パック。 A plurality of battery cells formed by closing the opening of a cylindrical and bottomed outer can with a sealing plate;
A holder case for holding the plurality of battery cells in a parallel posture and holding the electrode terminals provided at both ends of each battery cell in a posture on the same plane;
With
The holder case is
A first case in which a plurality of holding portions for inserting and holding one end of the battery cell are provided inside;
A second case provided with a plurality of holding portions on the inside for inserting and holding the other end of the battery cell;
The plurality of battery cells are sandwiched from both sides in the longitudinal direction by the first case and the second case, and both end portions of the plurality of battery cells are held by the holding portion, and an intermediate portion of the plurality of battery cells Is structured to be exposed in the holder case,
The battery further comprises a positioning spacer that is disposed between the holding part of the first case and the holding part of the second case and holds and positions intermediate parts of the plurality of battery cells. pack. - 請求項1に記載される電池パックであって、
前記位置決スペーサーが、前記電池セルを貫通させて、該電池セルの中間部を保持する挿通孔を複数開口してなる多孔プレートで、前記挿通孔に前記電池セルを嵌入して該電池セルを位置決めするようにしてなる電池パック。 The battery pack according to claim 1,
The positioning spacer is a perforated plate having a plurality of insertion holes that penetrate the battery cell and hold the middle part of the battery cell, and the battery cell is inserted into the insertion hole. A battery pack designed to be positioned. - 請求項1または2に記載される電池パックであって、
前記ホルダーケースが熱硬化性樹脂で成形されてなる電池パック。 The battery pack according to claim 1 or 2,
A battery pack in which the holder case is formed of a thermosetting resin. - 請求項1から3のいずれか一項に記載される電池パックであって、
前記第1ケース及び前記第2ケースの前記保持部の深さが前記電池セルの全長の25%以下で、前記位置決スペーサーの厚さが前記電池セルの全長の10%以下である電池パック。 The battery pack according to any one of claims 1 to 3,
The battery pack in which the depth of the holding portion of the first case and the second case is 25% or less of the total length of the battery cell, and the thickness of the positioning spacer is 10% or less of the total length of the battery cell. - 請求項1から4のいずれか一項に記載される電池パックであって、
前記第1ケース及び前記第2ケースは、複数の前記保持部を内側面に設けた端面プレート部と、前記端面プレート部の周囲に沿って形成された周壁とを備え、全体の外形を略矩形状として、前記周壁の対向する開口縁を互いに連結して、内部に前記電池セルの中間部を表出させる中空部を形成しており、
前記第1ケース及び前記第2ケースの対向する前記周壁で前記位置決スペーサーを挟着して定位置に配置してなる電池パック。 The battery pack according to any one of claims 1 to 4,
The first case and the second case include an end surface plate portion having a plurality of the holding portions provided on an inner surface, and a peripheral wall formed along the periphery of the end surface plate portion, and the entire outer shape is substantially rectangular. As the shape, the opposing opening edges of the peripheral walls are connected to each other to form a hollow part that exposes the middle part of the battery cell inside,
A battery pack that is arranged at a fixed position with the positioning spacer sandwiched between the peripheral walls facing the first case and the second case. - 請求項5に記載される電池パックであって、
前記第1ケース及び前記第2ケースの少なくとも一方は、前記周壁の開口縁に沿って前記位置決スペーサーを嵌合させる段差凹部を設けてなる電池パック。 The battery pack according to claim 5,
A battery pack in which at least one of the first case and the second case is provided with a step recess for fitting the positioning spacer along the opening edge of the peripheral wall. - 請求項5または6に記載される電池パックであって、
さらに、前記第1ケース及び前記第2ケースの端面プレート部の外側に配置される一対のバスバープレートを備えており、
前記複数の電池セルは、同じ向きに並べて前記ホルダーケースに収納されており、
前記第1ケース及び前記第2ケースは、前記保持部の底面を貫通する接続孔を前記端面プレート部に開口して、前記接続孔から前記電池セルの電極端子を露出させると共に、前記電極端子を前記バスバープレートに接続して前記複数の電池セルを並列に接続してなる電池パック。 The battery pack according to claim 5 or 6, wherein
Furthermore, it has a pair of bus bar plates arranged outside the end face plate portions of the first case and the second case,
The plurality of battery cells are stored in the holder case side by side in the same direction,
In the first case and the second case, a connection hole that penetrates the bottom surface of the holding portion is opened in the end surface plate portion, and the electrode terminal of the battery cell is exposed from the connection hole. A battery pack formed by connecting the plurality of battery cells in parallel to the bus bar plate. - 請求項7に記載される電池パックであって、
前記一対のバスバープレートは、前記第1ケースの外側に配置される第1のバスバープレートと前記第2ケースの外側に配置される第2のバスバープレートからなり、各バスバープレートは、前記端面プレート部の外周縁から周壁に沿って折曲された折曲片を備え、前記折曲片の先端部をさらに折曲して外部接続部としており、
前記第1のバスバープレートは、外形を矩形状とする前記ホルダーケースの側面である第1面に前記折曲片を配置しており、
前記第2のバスバープレートは、前記第1面と対向する側面である第3面に前記折曲片を配置してなる電池パック。 The battery pack according to claim 7, wherein
The pair of bus bar plates includes a first bus bar plate disposed outside the first case and a second bus bar plate disposed outside the second case, and each bus bar plate includes the end plate portion. Comprising a bent piece that is bent along the peripheral wall from the outer peripheral edge, and further bending the tip of the bent piece as an external connection part,
The first bus bar plate has the bent piece disposed on a first surface which is a side surface of the holder case having a rectangular outer shape,
The second bus bar plate is a battery pack in which the bent piece is arranged on a third surface which is a side surface facing the first surface. - 請求項5または6に記載される電池パックであって、
前記ホルダーケースは、前記第1のバスバープレートの前記折曲片が配置される前記第1面に、該折曲片を案内する嵌合凹部を備えており、前記第2のバスバープレートの前記折曲片が配置される前記第3面に、該折曲片を案内する嵌合凹部を備えると共に、この嵌合凹部に前記外部接続部を配置する段差面を備える電池パック。
The battery pack according to claim 5 or 6, wherein
The holder case is provided with a fitting recess for guiding the bent piece on the first surface on which the bent piece of the first bus bar plate is disposed, and the folding of the second bus bar plate is performed. A battery pack including a fitting recess for guiding the bent piece on the third surface on which the bent piece is arranged, and a stepped surface on which the external connection portion is arranged in the fitting recess.
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110915021A (en) * | 2017-10-16 | 2020-03-24 | 株式会社Lg化学 | Battery module and battery pack |
WO2020214383A1 (en) * | 2019-04-15 | 2020-10-22 | Robert Bosch Gmbh | Battery module including insulating bus bar assemblies |
WO2021039550A1 (en) * | 2019-08-30 | 2021-03-04 | パナソニックIpマネジメント株式会社 | Electrical storage module |
WO2021039551A1 (en) * | 2019-08-30 | 2021-03-04 | パナソニックIpマネジメント株式会社 | Power storage module |
WO2021107429A1 (en) * | 2019-11-25 | 2021-06-03 | 주식회사 엘지에너지솔루션 | Battery module and battery pack |
JP2021529419A (en) * | 2018-06-25 | 2021-10-28 | アルマ マター ストゥディオラム−ウニベルシタ ディ ボローニャ | Power module and how to assemble it |
WO2021221306A1 (en) * | 2020-04-29 | 2021-11-04 | 주식회사 엘지에너지솔루션 | Battery module and battery pack comprising same |
WO2022255100A1 (en) | 2021-06-04 | 2022-12-08 | 株式会社Gsユアサ | Power storage device |
EP4145618A4 (en) * | 2020-05-18 | 2023-11-08 | BYD Company Limited | Battery, battery pack, and vehicle |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010015958A (en) * | 2008-07-07 | 2010-01-21 | Toyota Motor Corp | Power storage module and its manufacturing method |
JP2012094330A (en) * | 2010-10-26 | 2012-05-17 | Sony Corp | Battery unit |
WO2012132135A1 (en) * | 2011-03-31 | 2012-10-04 | 三洋電機株式会社 | Battery pack |
CN203983361U (en) * | 2014-05-30 | 2014-12-03 | 合肥国轩高科动力能源股份公司 | Cylindrical lithium battery module is skeleton fixedly |
WO2015162841A1 (en) * | 2014-04-25 | 2015-10-29 | パナソニックIpマネジメント株式会社 | Battery block |
-
2017
- 2017-03-14 JP JP2018508964A patent/JP6859319B2/en active Active
- 2017-03-14 WO PCT/JP2017/010119 patent/WO2017169728A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010015958A (en) * | 2008-07-07 | 2010-01-21 | Toyota Motor Corp | Power storage module and its manufacturing method |
JP2012094330A (en) * | 2010-10-26 | 2012-05-17 | Sony Corp | Battery unit |
WO2012132135A1 (en) * | 2011-03-31 | 2012-10-04 | 三洋電機株式会社 | Battery pack |
WO2015162841A1 (en) * | 2014-04-25 | 2015-10-29 | パナソニックIpマネジメント株式会社 | Battery block |
CN203983361U (en) * | 2014-05-30 | 2014-12-03 | 合肥国轩高科动力能源股份公司 | Cylindrical lithium battery module is skeleton fixedly |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20200251695A1 (en) * | 2017-10-16 | 2020-08-06 | Lg Chem, Ltd. | Battery module and battery pack |
JP2020528649A (en) * | 2017-10-16 | 2020-09-24 | エルジー・ケム・リミテッド | Battery module and battery pack |
US11688911B2 (en) | 2017-10-16 | 2023-06-27 | Lg Energy Solution, Ltd. | Battery module and battery pack |
CN110915021A (en) * | 2017-10-16 | 2020-03-24 | 株式会社Lg化学 | Battery module and battery pack |
JP2021529419A (en) * | 2018-06-25 | 2021-10-28 | アルマ マター ストゥディオラム−ウニベルシタ ディ ボローニャ | Power module and how to assemble it |
WO2020214383A1 (en) * | 2019-04-15 | 2020-10-22 | Robert Bosch Gmbh | Battery module including insulating bus bar assemblies |
CN113994531A (en) * | 2019-04-15 | 2022-01-28 | 罗伯特·博世有限公司 | Battery module with insulated bus bar assembly |
CN113994536A (en) * | 2019-08-30 | 2022-01-28 | 松下知识产权经营株式会社 | Electricity storage module |
WO2021039550A1 (en) * | 2019-08-30 | 2021-03-04 | パナソニックIpマネジメント株式会社 | Electrical storage module |
WO2021039551A1 (en) * | 2019-08-30 | 2021-03-04 | パナソニックIpマネジメント株式会社 | Power storage module |
EP4024420A4 (en) * | 2019-08-30 | 2022-11-09 | Panasonic Intellectual Property Management Co., Ltd. | Electrical storage module |
JP2022523987A (en) * | 2019-11-25 | 2022-04-27 | エルジー エナジー ソリューション リミテッド | Battery module and battery pack |
CN113767514A (en) * | 2019-11-25 | 2021-12-07 | 株式会社Lg新能源 | Battery module and battery pack |
JP7285946B2 (en) | 2019-11-25 | 2023-06-02 | エルジー エナジー ソリューション リミテッド | Battery modules and battery packs |
WO2021107429A1 (en) * | 2019-11-25 | 2021-06-03 | 주식회사 엘지에너지솔루션 | Battery module and battery pack |
WO2021221306A1 (en) * | 2020-04-29 | 2021-11-04 | 주식회사 엘지에너지솔루션 | Battery module and battery pack comprising same |
EP4145618A4 (en) * | 2020-05-18 | 2023-11-08 | BYD Company Limited | Battery, battery pack, and vehicle |
WO2022255100A1 (en) | 2021-06-04 | 2022-12-08 | 株式会社Gsユアサ | Power storage device |
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