WO2018020747A1 - 電池パック - Google Patents

電池パック Download PDF

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Publication number
WO2018020747A1
WO2018020747A1 PCT/JP2017/014401 JP2017014401W WO2018020747A1 WO 2018020747 A1 WO2018020747 A1 WO 2018020747A1 JP 2017014401 W JP2017014401 W JP 2017014401W WO 2018020747 A1 WO2018020747 A1 WO 2018020747A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
opening
battery pack
connector
extending
Prior art date
Application number
PCT/JP2017/014401
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
英史 大石
浩生 植田
Original Assignee
株式会社豊田自動織機
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社豊田自動織機 filed Critical 株式会社豊田自動織機
Publication of WO2018020747A1 publication Critical patent/WO2018020747A1/ja

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Classifications

    • 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
    • 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/271—Lids or covers for the racks or secondary casings
    • H01M50/273—Lids or covers for the racks or secondary casings characterised by the material
    • H01M50/276—Inorganic material
    • 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

  • One aspect of the present invention relates to a battery pack.
  • Patent Document 1 describes a battery pack having a case for housing a battery module.
  • the case of the battery pack described in Patent Document 1 is provided with a through hole that allows the inside of the case to communicate with the outside.
  • the through-hole is provided with a pressure release valve that opens when the pressure inside the case exceeds a specified pressure.
  • the pressure release valve functions as a so-called safety valve that prevents the pressure in the case from rising abnormally.
  • the battery pack is accommodated in a battery accommodating portion of the vehicle as a battery, for example.
  • the pressure release valve breaks, the flow of gas discharged from the inside of the case through the through hole cannot be controlled (regulated). For this reason, there is a possibility that the gas ejected from the inside of the case flows out directly from, for example, an opening for charging provided in the battery housing portion.
  • One aspect of the present invention provides a battery pack capable of controlling the flow of gas discharged from the inside of the housing to the outside.
  • a battery pack includes a battery module, a housing that houses the battery module, and a plate-like lid that closes an opening provided in the housing.
  • the lid includes a fixed portion fixed to the housing and an extending portion extending from the fixed portion so as to reach the peripheral edge of the opening.
  • the extension portion opens so as to be separated from the peripheral portion with the fixed portion as a starting point in response to an increase in pressure in the housing.
  • the housing has a first side surface provided with a first recess that is recessed toward the inside of the housing.
  • the first recess has a bottom surface and an inner wall surface connecting the bottom surface and the first side surface.
  • the opening is provided on the bottom surface.
  • the extending part of the lid body is deformed so as to be separated from the peripheral part from the fixed part as the pressure in the housing increases, thereby opening the opening.
  • a cover body functions as what is called a safety valve which prevents that the pressure in a housing
  • the gas discharged to the outside from the inside of the casing flows out in a direction spreading around the opening from the gap between the peripheral edge portion and the extending portion.
  • the opening is provided on the bottom surface of the first recess provided on the first side surface of the housing. For this reason, it is possible to control the flow of gas discharged from the inside of the housing through the opening to the inner wall surface of the first recess.
  • the housing may have a second side surface facing the side opposite to the inner wall surface.
  • a charging connector may be provided on the second side surface.
  • the charging connector is provided on the second side surface. Therefore, if the battery pack is housed in the battery housing portion of the vehicle so that the second side surface is the front side, the charging connector can be accessed from the opening provided in the battery housing portion. At this time, the gas flowing out from the opening on the first side surface is controlled by the inner wall surface on the opposite side of the second side surface, and thus does not directly reach the opening for charging. Therefore, the gas flowing out from the opening on the first side surface is prevented from flowing directly out of the charging opening.
  • the first side surface may be provided with a second recess that is recessed toward the inside of the housing.
  • An external component may be provided in the second recess.
  • the external component since the external component is provided in the second recess, the flow of gas discharged from the opening provided in the bottom surface of the first recess does not directly hit the external component. Thereby, the influence which the gas discharged
  • the external component include a connector connected to the battery module, a connector connected to a control unit that controls the battery module, and the like.
  • the extending portion may have one end connected to the fixed portion and the other end located on the opposite side of the one end.
  • the other end may face the inner wall surface.
  • the extending part is deformed so as to be separated from the peripheral part starting from the fixed part. Therefore, in the extension part, the other end located on the opposite side of the one end is farther away from the peripheral part than the one end connected to the fixed part. For this reason, the gas in a housing
  • casing tends to flow out from the other end side of an extension part.
  • the other end of the extending part faces the inner wall surface of the first recess. Therefore, the flow of gas flowing out from the inside of the casing surely hits the inner wall surface. For this reason, the flow of the gas flowing out from the inside of the housing can be reliably controlled.
  • a battery pack includes a battery module, a housing that houses the battery module, and a plate-like lid that closes an opening provided in the housing.
  • the lid includes a fixed portion fixed to the housing and an extending portion extending from the fixed portion so as to reach the peripheral edge of the opening.
  • the extension portion opens so as to be separated from the peripheral portion with the fixed portion as a starting point in response to an increase in pressure in the housing.
  • the housing includes a third side surface provided with an opening, and a wall portion standing on the third side surface.
  • the extending part of the lid body is deformed so as to be separated from the peripheral part from the fixed part as the pressure in the housing increases, thereby opening the opening.
  • a cover body functions as what is called a safety valve which prevents that the pressure in a housing
  • the gas discharged to the outside from the inside of the casing flows out in a direction spreading around the opening from the gap between the peripheral edge portion and the extending portion.
  • the opening is provided on the third side surface of the housing, and a wall portion is erected on the third side surface. For this reason, the flow of the gas discharged
  • FIG. 2 is a schematic cross-sectional view taken along the line II-II in FIG. It is a perspective view of the battery pack shown by FIG. It is a side view of the battery pack shown by FIG.
  • FIG. 2 is a top view of the battery pack shown in FIG. 1.
  • FIG. 2 is a partially exploded perspective view of the battery pack shown in FIG. 1. It is a schematic diagram which shows the state which the extension part deform
  • the battery pack according to this embodiment is mounted on a vehicle.
  • the vehicle is, for example, an industrial vehicle.
  • An example of the industrial vehicle is a forklift that performs a cargo handling operation.
  • a reach lift is illustrated as an example of a forklift.
  • FIG. 1 is a side view showing a reach lift.
  • the reach lift 1 includes a vehicle body 2, a cargo handling device 3, and a cab 4.
  • the reach lift 1 is a compact forklift that a driver stands and operates.
  • the body 2 of the reach lift 1 is smaller than the body of the counter-type forklift.
  • the size of the vehicle body 2 in the front-rear direction is relatively small.
  • “front”, “rear”, “left”, and “right” may indicate directions when the direction from the cab 4 toward the cargo handling device 3 is the “front” direction.
  • “upper” and “lower” may indicate a vertically upward direction and a vertically downward direction, respectively.
  • the vehicle body 2 includes a pedestal portion 2a and a main body portion 2b.
  • the pedestal portion 2 a is disposed at the lower part of the vehicle body 2.
  • the pedestal portion 2a has a rectangular parallelepiped shape, for example.
  • a rear wheel (drive wheel and steering wheel) 2c and a caster wheel (not shown) are provided in the lower rear portion of the pedestal portion 2a.
  • the rear right part on the upper surface of the pedestal part 2a is a floor on which the driver stands.
  • the main body 2b is disposed on the top of the pedestal 2a.
  • the main body 2b is substantially L-shaped in plan view.
  • the inside of the main body 2b is a storage space (battery storage portion) Hs for various devices.
  • the front portion of the accommodation space Hs is a space that extends over substantially the entire region of the reach lift 1 in the left-right direction (vehicle width direction).
  • the rear portion of the accommodation space Hs is a space that extends over a substantially left half region of the reach lift 1 in the left-right direction.
  • a traveling motor 2d and a cargo handling motor 2e are disposed on the upper side of the rear portion of the accommodation space Hs.
  • the traveling motor 2d is a motor that is a drive source of the drive wheels.
  • the cargo handling motor 2 e is a motor that is a drive source of the cargo handling device 3.
  • FIG. 2 is a schematic cross-sectional view taken along the line II-II in FIG.
  • the battery pack 10 is accommodated in the front portion of the accommodation space Hs.
  • the left side surface 2s of the vehicle body 2 is provided with a lid 2h that can be opened and closed with respect to an opening 2p for inserting the battery pack 10 into the accommodation space Hs.
  • the opening 2p is also used as a charging opening for accessing a charging connector 80 described later when the battery pack 10 is charged.
  • the battery pack 10 serves as a power source for the traveling motor 2d and the cargo handling motor 2e.
  • the battery pack 10 is housed in the housing space Hs so that a side surface 45 provided with a charging connector 80 to be described later is in front of the side surface 2s.
  • the cargo handling device 3 includes a pair of left and right reach legs 3a, a fork 3b, and a mast 3c.
  • the reach leg 3a is provided forward from the front end of the pedestal 2a.
  • a front wheel 3d is provided at the lower front part of each reach leg 3a.
  • the mast 3c is erected in front of the main body 2b.
  • the mast 3c is attached to a pair of left and right reach legs 3a so as to be movable in the front-rear direction.
  • the mast 3c is movable in the front-rear direction along a pair of left and right reach legs 3a by a driving force of a reach cylinder (not shown).
  • the fork 3b is attached to the mast 3c via a lift bracket 3e.
  • the fork 3b is a member for supporting the load A.
  • the fork 3b is movable in the vertical direction along the mast 3c by a driving force of a lift cylinder (not shown) coupled to the mast 3c.
  • a vacant space on the right side of the rear part of the vehicle body 2 is the floor.
  • the cab 4 is provided with a handle 4a on the left side of the floor.
  • FIG. 3 is a perspective view of the battery pack shown in FIG.
  • FIG. 4 is a side view of the battery pack shown in FIG.
  • FIG. 5 is a top view of the battery pack shown in FIG. 6 is a partially exploded perspective view of the battery pack shown in FIG.
  • FIG. 7 is a schematic diagram showing a state in which the extending portion is deformed.
  • the words “upper” and “lower” will continue to be used. However, depending on the attitude of the battery pack 10, it may not match “upper” and “lower” (that is, vertically upward and vertically downward) in FIG. .
  • the battery pack 10 includes a plurality of battery modules 20, a control unit 30, a housing 40, a lid 50, a first connector 60 (external part), and a second.
  • a connector 70 (external part) and a charging connector 80 are provided.
  • the control unit 30 controls at least the battery module 20.
  • the housing 40 houses the battery module 20 and the control unit 30.
  • the lid 50 is attached to the housing 40.
  • the first connector 60 is used for connecting the battery module 20 to the outside.
  • the second connector 70 is used to connect the control unit 30 to the outside.
  • the charging connector 80 is electrically connected to the battery module 20.
  • the external component is a component exposed to the outside of the battery pack 10 and may be included in the battery pack 10 or may not be included in the battery pack 10. Examples of the external parts include a connector used for connection to the outside of the battery pack 10, a harness connected to the connector, a control lamp, and the like.
  • the battery module 20 includes, for example, a plurality (for example, 7 to 13) of battery cells 21 connected in series with each other.
  • the battery cell 21 is a nonaqueous electrolyte secondary battery such as a lithium ion secondary battery.
  • the battery modules 20 are connected in parallel to each other by, for example, being integrated and connected to the positive and negative bus bars in a terminal block (not shown).
  • the control unit 30 includes, for example, a monitoring ECU (Electronic Control Unit) for monitoring the temperature or voltage of the battery module 20, and electronic components such as an FET relay.
  • the control unit 30 can control charging / discharging of the battery module 20 according to the temperature and voltage of the battery module 20 or according to a request from the reach lift 1 side.
  • the housing 40 has a generally rectangular parallelepiped outer shape as a whole.
  • the housing 40 includes a rectangular parallelepiped first accommodating portion 41 that accommodates the battery module 20, and a rectangular parallelepiped second accommodating portion 42 that accommodates the control unit 30, the terminal block, and the like.
  • the first accommodating portion 41 includes a pair of flat side wall portions 43 facing each other, an upper surface 44 (third side surface), a side surface 45 (second side surface), and a side surface 46.
  • the battery module 20 is fixed to the side wall 43, for example.
  • the upper surface 44 is rectangular.
  • the upper surface 44 connects the side wall portions 43 to each other in the short direction of the upper surface 44 (here, the Y-axis direction).
  • the side surface 45 and the side surface 46 are substantially parallel to each other and face opposite sides in the longitudinal direction of the upper surface 44 (here, the X-axis direction).
  • the side surface 45 and the side surface 46 extend along a direction intersecting (orthogonal) the upper surface 44 from the upper surface 44 (here, the Z-axis direction).
  • the upper surface 44 is located below the upper end portion of the side wall portion 43. Therefore, the upper end portion of the side wall portion 43 is a flat plate-like protruding portion 43 p protruding from the upper surface 44.
  • the side surface 45 is formed with a notch portion 45p that is notched on the upper surface 44 side and one side wall portion 43 side.
  • the bottom surface 45b of the notch 45p is substantially parallel to the side surface 45.
  • the bottom surface 45b is connected to the side surface 45 by an inclined surface 45s inclined with respect to the bottom surface 45b.
  • the side surface 45 faces the side opposite to the other side surface 48 described later in the longitudinal direction of the upper surface 44.
  • the second accommodating portion 42 is provided on the upper surface 44 between the pair of side wall portions 43.
  • the second housing part 42 protrudes from the upper surface 44.
  • the second accommodating portion 42 is provided in a part of the upper surface 44 in the longitudinal direction. More specifically, the second accommodating portion 42 is provided in the central portion excluding both end portions in the longitudinal direction of the upper surface 44.
  • the second housing portion 42 includes an upper surface 47 (first side surface) substantially parallel to the upper surface 44 of the first housing portion 41 and a pair of side surfaces 48 substantially parallel to the side surface 45.
  • the upper surface 47 is, for example, coincident with the upper end of the protruding portion 43p. Therefore, the position of the upper surface 44 of the first housing part 41 is lower than the position of the upper surface 47 of the second housing part 42 by the height of the second housing part 42 (height of the side surface 48).
  • the upper surface 47 defines the outer shape of the housing 40. More specifically, the upper surface 47 is the top surface of the housing 40.
  • the upper surface 44 includes a region 44a and a region 44b located on both ends in the longitudinal direction of the upper surface 44 with the second accommodating portion 42 interposed therebetween.
  • the region 44 a is located on the side surface 45 side with respect to the second housing portion 42.
  • the region 44b is located closer to the side surface 46 than the second housing portion 42.
  • the region 44a is surrounded in three directions by the inner surfaces 43s of the pair of projecting portions 43p and the one side surface 48 of the second housing portion 42.
  • the region 44b is surrounded in three directions by the inner surfaces 43s of the pair of projecting portions 43p and the other side surface 48 of the second housing portion 42.
  • the regions 44 a and 44 b are the bottom surfaces of the recesses 40 a and 40 b provided on the upper surface 47. That is, the recess 40 a (second recess) is recessed toward the inside of the housing 40.
  • the recess 40a has a region 44a as a bottom surface.
  • the recess 40a has an inner surface 43s and one side surface 48 as inner walls.
  • One side surface 48 connects the region 44 a and the upper surface 47.
  • the inner surface 43s extends along a direction (here, the X-axis direction) intersecting (orthogonal) with one side surface 48.
  • the recess 40 b (first recess) is recessed toward the inside of the housing 40.
  • the recess 40b has a region 44b as a bottom surface.
  • the recess 40b has an inner surface 43s and the other side surface 48 as inner walls.
  • the other side surface 48 connects the region 44 b and the upper surface 47.
  • the inner surface 43s extends along a direction intersecting (orthogonal) with the other side surface 48 (here, the X-axis direction).
  • the second accommodating portion 42 and the pair of projecting portions 43p are wall portions erected on the upper surface 44.
  • the 2nd accommodating part 42 has a pair of side surface 48 as a side surface of the wall part.
  • Each protrusion 43p has an inner surface 43s as a side surface of the wall portion.
  • openings A1 and A2 are provided in the region 44b.
  • the openings A1 and A2 have a rectangular shape with the same shape.
  • the openings A1 and A2 are juxtaposed in the longitudinal direction of the upper surface 44.
  • Opening A1 is arrange
  • the opening A2 is disposed on the side surface 46 side.
  • the region 44b has a peripheral edge R that forms the periphery of the openings A1 and A2.
  • the peripheral portion R includes peripheral portions R1 to R3, a pair of peripheral portions R4, and a pair of peripheral portions R5.
  • the peripheral edge portion R1 is located between the opening A1 and the opening A2.
  • the peripheral edge portion R1 extends along the short side direction of the upper surface 44.
  • the peripheral portion R1 is provided with a plurality of screw holes H1 aligned in the Y-axis direction.
  • the plurality of screw holes H1 are used to fix the lid 50 to the peripheral portion R1 with the bolt B.
  • the peripheral portion R2 faces the peripheral portion R1 in the X-axis direction with the opening A1 interposed therebetween.
  • the peripheral portion R2 extends along the Y-axis direction.
  • the peripheral edge portion R2 is located between the opening A1 and the other side surface 48 as viewed from the Z-axis direction.
  • the peripheral portion R3 is opposed to the peripheral portion R1 in the X-axis direction with the opening A2 interposed therebetween.
  • the peripheral portion R3 extends along the Y-axis direction.
  • the peripheral edge portion R3 is located between the opening A2 and the side surface 46 when viewed from the Z-axis direction.
  • the pair of peripheral edge portions R4 face each other in the Y-axis direction with the opening A1 interposed therebetween.
  • Each peripheral portion R4 extends along the X-axis direction.
  • the pair of peripheral edge portions R5 face each other in the Y-axis direction with the opening A2 interposed therebetween.
  • Each peripheral portion R5 extends along the X-axis direction.
  • the lid 50 is made of a general steel material such as SS400 or SPHC.
  • the lid 50 is formed of, for example, a rectangular plate having a thickness of 5 mm.
  • the thickness and rigidity of the lid 50 are smaller than the thickness and rigidity of each part of the housing 40.
  • the lid 50 is disposed on the region 44b and closes the openings A1 and A2.
  • the lid 50 has an inner surface 50a that faces the peripheral edge R in the Z-axis direction.
  • the lid 50 has a fixed portion 51 and extending portions 52 and 53.
  • the fixing part 51 is a part fixed to the housing 40.
  • the fixing portion 51 extends along the Y-axis direction at the center of the lid 50 in the X-axis direction.
  • the fixed portion 51 is provided with a plurality of through holes H2 aligned in the Y-axis direction.
  • the plurality of through holes H2 are provided at positions overlapping the plurality of screw holes H1 when viewed from the Z-axis direction.
  • the fixing portion 51 faces the peripheral portion R1 and is fixed to the peripheral portion R1 with a bolt B. That is, the peripheral portion R1 functions as a fixed portion to which the lid 50 is fixed.
  • the bolt B is inserted through the through hole H2 and fastened to the screw hole H1.
  • the extended portion 52 is a portion that extends from the fixed portion 51 to the peripheral portions R2 and R4 of the peripheral portion R and closes the opening A1.
  • the extending part 52 has one end 52a connected to the fixed part 51 and the other end 52b located on the opposite side of the one end 52a in the X-axis direction. In a state where the extension portion 52 closes the opening A1 (a state where the extension portion 52 is not deformed), the other end 52b faces the other side surface 48 in the X-axis direction.
  • the extending part 52 is not fixed to the housing 40.
  • the extension portion 52 is deformed (for example, elastically deformed (hereinafter the same)) so as to be separated from the peripheral portions R2 and R4 with the fixing portion 51 as a starting point in response to an increase in pressure in the housing 40.
  • the opening A1 is opened. To open the opening A1 is to make the inside of the housing 40 communicate with the outside of the housing 40 through the opening A1.
  • the extended portion 53 is a portion that extends from the fixed portion 51 to the peripheral portions R3 and R5 of the peripheral portion R and closes the opening A2.
  • the extending portion 53 has one end 53a connected to the fixed portion 51 and the other end 53b located on the opposite side of the one end 53a in the X-axis direction.
  • the extending part 53 is not fixed to the housing 40. For this reason, the extending part 53 opens the opening A2 by being deformed so as to be separated from the peripheral edge parts R3 and R5 with the fixing part 51 as a starting point in accordance with an increase in the pressure in the housing 40.
  • the lid 50 opens the openings A1 and A2 by the deformation of the extending parts 52 and 53.
  • the lid body 50 functions as a so-called safety valve, and prevents the pressure in the housing 40 from exceeding a specified pressure.
  • This specified pressure is set lower than the pressure at which the housing 40 is damaged when the pressure in the housing 40 increases.
  • the lid 50 is formed of a thin plate having lower rigidity than the other parts of the housing 40 as described above in order to ensure the ease of deformation of the extending portions 52 and 53.
  • a seal member S is disposed between the peripheral edge R and the lid body 50. Specifically, the seal member S is disposed between the peripheral edge portions R 2 to R 5 and the inner surface 50 a of the lid body 50.
  • the seal member S has, for example, a long shape, and is arranged in a rectangular ring shape so as to surround the openings A1 and A2 together with the peripheral edge portion R1.
  • the sealing member S for example, polyurethane sponge, EPDM (ethylene / propylene / diene rubber) sponge or the like can be used.
  • the seal member S is pressed against the peripheral portions R2 to R5 by the elastic force of the lid 50 in a state where the lid 50 closes the openings A1 and A2, and is compressed by the peripheral portions R2 to R5 and the lid 50. ing. As a result, the seal member S is elastically deformed to exhibit a sealing property, and closes between the peripheral portions R2 to R5 and the lid 50.
  • the sealing property referred to here is a property of hermetically sealing the member to be sealed.
  • the first connector 60 and the second connector 70 are provided in the recess 40a (a space surrounded by the inner surface 43s and the one side surface 48 on the region 44a).
  • the first connector 60 is provided in the region 44a.
  • a harness (external component) connected to a connector (not shown) on the reach lift 1 side is connected to the first connector 60.
  • the first connector 60 electrically connects the battery module 20 to the travel motor 2d and the cargo handling motor 2e of the reach lift 1.
  • the extra length of a harness (not shown) connected to the first connector 60 is routed in the recess 40a.
  • the second connector 70 is provided on one side surface 48.
  • a signal line (external part) connected to a connector (not shown) on the reach lift 1 side is connected to the second connector 70.
  • the second connector 70 electrically connects the control unit 30 to a control unit (not shown) on the reach lift 1 side.
  • the extra length of a signal line (not shown) connected to the second connector 70 is routed in the recess 40a.
  • the charging connector 80 is provided on the side surface 45. More specifically, the charging connector 80 protrudes from the bottom surface 45b of the cutout 45p of the side surface 45. The front end portion of the charging connector 80 is located closer to the bottom surface 45b than the surface of the side surface 45 other than the notch 45p. Therefore, the charging connector 80 is located inside the entire outer shape of the housing 40.
  • the charging connector 80 is electrically connected to the battery module 20 in the first housing portion 41. More specifically, the charging connector 80 is connected to the positive and negative bus bars of the terminal block in the first housing portion 41 using, for example, bolts.
  • a communication hole (not shown) that communicates with a connection portion (for example, the bus bar of the terminal block) between the battery module 20 and the charging connector 80 in the first housing portion 41 is formed.
  • a flat cover 49 that closes the communication hole is provided in the region 44a. Therefore, for example, when the charging connector 80 is replaced, the connecting portion can be accessed through the communication hole with the cover 49 removed.
  • the first connector 60, the second connector 70, and the communication hole are all provided in the recess 40a.
  • the first connector 60 and the like are provided on one side of the housing 40 in the longitudinal direction of the upper surface 44.
  • the concave portion 40a provided with the first connector 60 and the like is disposed on the left side surface 2s side of the vehicle body 2.
  • the extending portions 52 and 53 of the lid 50 are separated from the peripheral portions R2 to R5 with the fixing portion 51 as a starting point in response to an increase in the pressure in the housing 40.
  • the openings A1 and A2 provided in the region 44b of the upper surface 44 are opened.
  • the lid 50 functions as a so-called safety valve that prevents the pressure in the housing 40 from rising abnormally.
  • the gas discharged from the inside of the housing 40 to the outside flows out in a direction spreading around the openings A1 and A2 from the gap between the peripheral edge portions R2 to R5 and the extending portions 52 and 53.
  • the region 44b in which the openings A1 and A2 are provided is the bottom surface of the recess 40b provided in the upper surface 47. For this reason, it is possible to control the flow of the gas discharged from the inside of the housing 40 through the openings A1 and A2 to the pair of inner surfaces 43s and the other side surface 48 which are the inner wall surfaces of the recess 40b. .
  • the second accommodating portion 42 and the pair of projecting portions 43p are erected as a wall portion on the upper surface 44 provided with the openings A1 and A2.
  • the 2nd accommodating part 42 has the side surface 48 as a side surface of a wall part, and each protrusion part 43p has the inner surface 43s as a side surface of a wall part. For this reason, it is possible to control the flow of the gas discharged from the inside of the housing 40 through the openings A1 and A2 to the other side surface 48 and the pair of inner surfaces 43s.
  • a charging connector 80 is provided on a side surface 45 (more specifically, a bottom surface 45 b) facing the other side surface 48. Therefore, if the battery pack 10 is accommodated in the accommodation space Hs of the reach lift 1 so that the side surface 45 is on the near side, the charging connector 80 is easily accessed by opening the lid 2h provided in the accommodation space Hs. It becomes possible. At this time, the gas flowing out from the openings A1 and A2 is controlled by the other side surface 48 opposite to the side surface 45 and the pair of inner surfaces 43s, and therefore does not directly reach the opening 2p of the accommodation space Hs. Therefore, the gas flowing out from the openings A1 and A2 is prevented from flowing out directly from the opening 2p of the accommodation space Hs.
  • the region 44 a in which the first connector 60 is provided is the bottom surface of the recess 40 a provided in the upper surface 47.
  • one side surface 48 provided with the second connector 70 is an inner wall surface of the recess 40a. That is, the first connector 60 and the second connector 70 are provided in the recess 40a. For this reason, the flow of the gas discharged from the openings A1 and A2 provided in the region 44b which is the bottom surface of the recess 40b does not directly hit the first connector 60 and the second connector 70. Thereby, the influence which the gas discharged
  • the second housing portion 42 is positioned as a wall portion between the openings A1 and A2 and the first connector 60 and the second connector 70 on the upper surface 44. Yes. For this reason, the flow of gas discharged from the openings A1 and A2 does not directly hit the first connector 60 and the second connector 70. Thereby, the influence which the gas discharged
  • the extending portion 52 is deformed so as to be separated from the peripheral portions R2 and R4 with the fixed portion 51 as a starting point. Therefore, in the extension part 52, the other end 52b located on the opposite side of the one end 52a is farther away from the peripheral edge portions R2 and R4 than the one end 52a connected to the fixed part 51. For this reason, the gas in the housing
  • the extending portion 53 is deformed so as to be separated from the peripheral portions R3 and R5 with the fixed portion 51 as a starting point. Accordingly, in the extending portion 53, the other end 53b located on the opposite side of the one end 53a is farther away from the peripheral portions R3 and R5 than the one end 53a connected to the fixed portion 51. For this reason, the gas in the housing
  • one aspect of the present invention is not limited to the above.
  • the above can be arbitrarily changed without changing the gist of each claim.
  • the openings A1 and A2 may be provided by being rotated 90 degrees in the region 44b. That is, the openings A ⁇ b> 1 and A ⁇ b> 2 may be arranged in parallel in the short direction of the upper surface 44.
  • the lid 50 is also rotated 90 degrees and fixed to the housing 40.
  • the other end 52b of the extending portion 52 and the other end 53b of the extending portion 53 are opposed to the inner surface 43s. Therefore, the flow of gas flowing out from the inside of the housing 40 surely hits the inner surface 43s. For this reason, the flow of the gas flowing out from the inside of the housing 40 can be reliably controlled.
  • the concave portion 40a includes inner surfaces 43s of a pair of projecting portions 43p and one side surface 48 of the second accommodating portion 42 as three inner wall surfaces. ing.
  • the recess 40a only needs to have at least one inner wall surface.
  • the recess 40b has inner surfaces 43s of a pair of projecting portions 43p and the other side surface 48 of the second accommodating portion 42 as three inner wall surfaces.
  • the recess 40b only needs to have at least one inner wall surface.
  • the housing 40 includes the second accommodating portion 42 and the pair of projecting portions 43p as three wall portions erected on the upper surface 44. However, at least one wall portion is provided. It only has to have.
  • the battery pack 10 it is sufficient that at least one opening A1, A2 is provided.
  • the battery pack 10 only needs to include at least one extending portion 52, 53.
  • the first connector 60, the second connector 70, and the charging connector 80 may be provided on the outer surface 43a of the side wall 43, the region 44a of the upper surface 44, the side surface 45, the side surface 46, or the upper surface 47, for example.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Mounting, Suspending (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Gas Exhaust Devices For Batteries (AREA)
PCT/JP2017/014401 2016-07-27 2017-04-06 電池パック WO2018020747A1 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016147258A JP6620695B2 (ja) 2016-07-27 2016-07-27 電池パック
JP2016-147258 2016-07-27

Publications (1)

Publication Number Publication Date
WO2018020747A1 true WO2018020747A1 (ja) 2018-02-01

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ID=61015854

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Application Number Title Priority Date Filing Date
PCT/JP2017/014401 WO2018020747A1 (ja) 2016-07-27 2017-04-06 電池パック

Country Status (2)

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JP (1) JP6620695B2 (enrdf_load_stackoverflow)
WO (1) WO2018020747A1 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7591726B2 (ja) * 2020-09-25 2024-11-29 パナソニックＩｐマネジメント株式会社 バッテリケースおよび電動アシスト自転車用バッテリ

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011054420A (ja) * 2009-09-02 2011-03-17 Nissan Motor Co Ltd 電池モジュール、組電池、および電池モジュールの製造方法
JP2014017270A (ja) * 2010-03-18 2014-01-30 Mitsubishi Motors Corp バッテリケース及び電池パック
WO2014041970A1 (ja) * 2012-09-14 2014-03-20 日産自動車株式会社 車載用バッテリパックの圧力開放構造

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011054420A (ja) * 2009-09-02 2011-03-17 Nissan Motor Co Ltd 電池モジュール、組電池、および電池モジュールの製造方法
JP2014017270A (ja) * 2010-03-18 2014-01-30 Mitsubishi Motors Corp バッテリケース及び電池パック
WO2014041970A1 (ja) * 2012-09-14 2014-03-20 日産自動車株式会社 車載用バッテリパックの圧力開放構造

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JP2018018659A (ja) 2018-02-01

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