WO2010016474A1 - 鉛蓄電池 - Google Patents
鉛蓄電池 Download PDFInfo
- Publication number
- WO2010016474A1 WO2010016474A1 PCT/JP2009/063781 JP2009063781W WO2010016474A1 WO 2010016474 A1 WO2010016474 A1 WO 2010016474A1 JP 2009063781 W JP2009063781 W JP 2009063781W WO 2010016474 A1 WO2010016474 A1 WO 2010016474A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lid
- terminal
- gas
- guide
- convex portion
- Prior art date
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 19
- 239000002253 acid Substances 0.000 claims description 15
- 238000000465 moulding Methods 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 63
- 230000000694 effects Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000978 Pb alloy Inorganic materials 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
Images
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
- H01M50/30—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
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/308—Detachable arrangements, e.g. detachable vent plugs or plug systems
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
-
- 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
- H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
-
- 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
- H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
- H01M50/367—Internal gas exhaust passages forming part of the battery cover or case; Double cover vent systems
-
- 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 lead storage battery that is particularly suitable for mounting on a vehicle such as a motorcycle or an automobile, and more specifically, a battery case including at least one cell chamber or a plurality of cell chambers, and an upper portion of the battery case.
- a lid covering the opening and a top opening of the lid are closed so as to form a guide path on the lid for guiding the gas exhausted from an exhaust hole formed in the lid corresponding to the cell chamber.
- the present invention relates to a lead storage battery including an upper lid.
- the lead storage battery is configured as follows, for example.
- a battery case having a cell chamber partitioned into a plurality of parts, and a lid that covers an upper opening of the battery case, wherein the lid has a recess formed on an upper surface, and the recess has a bottom wall that forms a bottom, A vertical wall raised upward from the outer peripheral edge of the bottom wall, and provided with an annular protrusion protruding upward on the bottom wall located on the inner side of the vertical wall, and on the inner side of the protrusion
- the bottom wall is provided with exhaust holes for exhausting the gases from the plurality of cell chambers, and the lid body is formed to form a space for collecting the gases exhausted from the plurality of exhaust holes to a specific cell chamber side.
- An upper lid for closing the recess is provided.
- the upper lid includes a joining portion joined by welding to the protruding portion, and is formed on the bottom wall corresponding to the specific cell chamber so as to discharge the gas collected in the specific cell chamber to the outside.
- a second exhaust hole different from the exhaust hole formed in the bottom wall is provided on the bottom wall, and an exhaust path for guiding the gas from the second exhaust hole to the exhaust port is guided to a partition on the periphery of the second exhaust hole.
- Patent Document 1 A structure in which an upper cover is formed on a wall and the exhaust path is configured in a tunnel shape has already been proposed (see, for example, Patent Document 1).
- the present invention intends to solve the bonding state between the lid body and the upper lid, the bonding state between the protruding portion on the peripheral edge of the second exhaust hole and the bonding portion of the upper lid, and the protrusion of the lid body.
- the lead storage battery which can be confirmed in both the joining state of a joint part and the junction part of an upper cover is provided.
- the lead storage battery of the present invention includes a battery case provided with a plurality of partitioned cell chambers, and a lid that covers an upper opening of the battery case, and is provided on the upper surface of the lid.
- a concave portion recessed downward and an upper lid for closing the concave portion, and the concave portion has a bottom wall forming the bottom portion and a vertical wall raised upward from the outer peripheral edge of the bottom wall.
- An annular projecting portion projecting upward on a bottom wall located on the inner side of the vertical wall, and an exhaust hole for exhausting gases from the plurality of cell chambers on the inner bottom wall of the projecting portion,
- a space for collecting the gas exhausted from the plurality of exhaust holes to a specific cell chamber side is formed by joining the projecting portion and a joint portion provided on the upper lid, and the projecting portion and the vertical portion
- An annular groove formed with the wall is covered with the outer periphery of the upper lid, and collected in the specific cell chamber.
- the bottom wall is provided with a second exhaust hole different from the exhaust hole formed in the bottom wall corresponding to the specific cell chamber, and is discharged from the second exhaust hole.
- the battery case includes: a battery case having at least one cell chamber; and a lid body that covers an upper opening of the battery case.
- the upper surface of the lid body is recessed downward.
- the concave portion is formed and has an upper lid for closing the concave portion, and the concave portion has a bottom wall forming a bottom portion and a vertical wall raised upward from an outer peripheral edge of the bottom wall.
- a ring-shaped protruding portion that protrudes upward on the bottom wall located inside, and an exhaust hole that exhausts gas from the cell chamber on the inner bottom wall of the protruding portion, and the gas exhausted from the exhaust hole A guide path that guides the outside to the outside by connecting the projection and the joint provided on the upper lid.
- the annular groove formed between the protruding portion and the vertical wall is covered with the outer peripheral edge of the upper lid, and the guide path is formed separately from the groove.
- the guide path includes an upper guide part that moves the gas discharged from the exhaust hole upward, a horizontal guide part that moves the gas from the upper guide part in a horizontal direction, and the Since it has a first guide path consisting of a lower guide part that moves gas from the horizontal guide part downward and a second guide path that guides gas from the lower guide part to the discharge port,
- the level in the height direction can be made lower than the level in the height direction of the upper lid to make it difficult for the gas to reach the vicinity of the terminal.
- the lead storage battery of the present invention includes a locked portion on one of the lid body and the upper lid, and a locking portion that locks on the locked portion on the other side. It is formed of a pair of holes, one of the pair of holes is formed in a size that prevents the locking portion that locks the hole from moving in the horizontal direction, and the other hole is a pair of holes. You may form in a long hole long in the opposing direction.
- the pair of locking portions are locked to the pair of holes, and the lid body and the upper lid are moved closer to each other from the locked state.
- the attachment of the upper lid to the lid body is completed.
- the other hole is formed as a long hole that is long in the opposing direction of the pair of holes, it is difficult to position the upper lid and the lid due to differences in shrinkage after molding, temperature changes after molding, and changes over time. Even in this case, it can be absorbed well by the long holes. In such a case, the distance in the facing direction of the pair of locking portions changes, but the positional relationship in the direction orthogonal to the facing direction of the pair of locking portions does not change.
- Means for joining and integrating the protruding portion of the lid and the joint portion of the upper lid include using an adhesive in addition to heat welding.
- the electrode plate group is accommodated in each of the cell chamber or the plurality of cell chambers, and a pole column extending from the electrode plate group is inserted into the lid body and welded.
- a conductive part for connecting the terminal to the bushing is formed integrally with the bushing and the terminal to form a terminal part, and at least a lower part of the bushing and the conductive part Are embedded in the lid by insert molding, there is a difference in shrinkage due to the temperature drop after insert molding between the lid portion near the terminal portion and the lid portion away from the terminal portion.
- the positioning described above may be difficult, and the present invention is effective.
- the discharge port may include a cutout portion that allows gas to be discharged from the radial direction of the discharge port.
- the second exhaust hole is provided through the cutout portion even when a foreign object comes into contact with the discharge port and the discharge port surface is closed by providing the cutout portion that allows gas to be discharged from the radial direction of the discharge port.
- the gas from can be discharged reliably.
- the guide path includes a first guide path formed on the inner side of the projecting portion surrounding the second exhaust hole, and a bottom that forms the groove from a part of the first guide path.
- You may comprise by the tunnel-shaped 2nd guide path which reaches the discharge port which penetrates the downward direction of a wall and a vertical wall, and discharges
- the lead storage battery of the present invention embeds the lower part of each terminal of the positive and negative electrodes on each side of the lid and the longitudinal ends of the side, and projects the upper part.
- a protrusion may be formed on the periphery and / or the vicinity of a portion where the upper portion of each terminal protrudes from the lid.
- the lid body in which the terminal portion is embedded as the temperature decreases after insert molding It is possible to prevent the resin part on the back side from being deformed into a concave shape and the resin part on the cover body side from which the terminal portion is exposed to be convex to be deformed.
- the protrusions are located on the first convex portion at the periphery of the portion where the upper portion of each terminal is protruded, and on both sides in the longitudinal direction in the vicinity of the first convex portion, And the 2nd convex part and 3rd convex part which protrude upwards rather than this 1st convex part are provided,
- the opening which can insert a nut in the said terminal is a side edge of the said 2nd convex part, or the 3rd convex part
- the bottom surface of the opening may be lower than the upper surface of the second or third convex portion.
- the first convex portion is provided in each terminal, so that the front side portion of the lid in which the lower portion of the terminal is embedded is convex, and the back side portion is suppressed from being deformed.
- An opening into which the nut can be inserted is formed at a side end of the second convex portion or a side end of the third convex portion, and a bottom surface of the opening is made lower than an upper surface of the second convex portion or the third convex portion.
- the inserted nut can be prevented from dropping, and when the nut is placed on the upper surface of the second convex portion or the third convex portion and slid into the inside of the terminal opening to be inserted, The problem that it becomes difficult to insert the nut can be avoided.
- the defective state of the joint between the projection of the lid that separates the guide path and the groove and the joint of the upper lid and the joint between the annular projection of the bottom wall and the joint of the upper lid can be detected. It can be detected by the presence or absence of a pressure drop.
- the level in the height direction of the discharge port becomes lower than the level in the height direction of the upper lid, and the gas discharged from the discharge port is the upper lid or It is difficult to reach the vicinity of the terminal along the periphery of the lid.
- FIG. 1 It is a top view of the cover body equipped with the upper cover. It is a top view of the cover body before mounting
- (A) is a right side view of the lid, (b) is a front view of the lid, (c) is a cross-sectional view taken along line AA in FIG. 2, and (d) is a cross-sectional view taken along line AB in FIG. .
- (A) is a top view which shows the circumference
- FIG. 7 It is a perspective view which shows the periphery of a 2nd exhaust hole.
- An upper lid is shown, (a) is a plan view thereof, (b) is a bottom view thereof, (c) is a front view thereof, and (d) is a sectional view taken along line CC in FIG. 7 (b).
- (A) is a left side view of a lid body having no convex portion, and (b) is a left side view of the lid body having a convex portion.
- (A) is a top view which shows the 2nd cover body equipped with the upper cover
- (b) is a bottom view of the upper cover which covers the recessed part of the cover body of (a).
- FIG. 1 and 2 show a lid 1 of the lead storage battery of the present invention.
- FIG. 1 shows a state in which an upper lid 5 to be described later is mounted
- FIG. 2 shows a state before the upper lid 5 to be described later is mounted.
- the lid 1 is formed of a synthetic resin in a rectangular shape in a plan view, and covers an upper opening of a battery case (not shown) provided with a plurality of partitioned cell chambers.
- the lead-acid battery provided with the lid 1 is particularly suitable when mounted on a vehicle such as a motorcycle or an automobile, but can also be used for other purposes.
- the long side direction of the lid 1 is the left-right direction, and the direction orthogonal to the long side direction is the front-rear direction.
- the lid 1 is provided with a pair of left and right terminals 2 and 3 on one long side (front end in the front-rear direction) so as to be located at both ends in the long side direction (left-right direction), respectively.
- a first lid portion 1A and a second lid portion 1B having an upper surface higher than the upper surface of the first lid portion 1A are provided.
- the recessed part 4 dented below is formed in the upper surface of the said 2nd cover part 1B.
- the concave portion 4 is formed over a wide range from the end on the first lid portion 1A side of the upper surface of the second lid portion 1B to a position slightly closer to the rear side than a position halved in the front-rear direction. .
- the flat surface 1F without the recessed part 4 on the other long side (front-rear direction rear end side), it can be used as a space for attaching a seal or the like with a model number or the like on the flat surface 1F. I am doing so.
- the flat surface 1F on the upper surface of the lid 1 can be used as a space for sticking a sticker, and if a reference symbol for checking various data is written on the sticker, a process before the upper lid 5 is attached.
- Data for example, data at the time of liquid injection, can be collated based on the reference numerals (conventionally, if described based on Patent Document 1, such a seal is provided after the top lid 19 is mounted, that is, liquid injection is performed.
- the left terminal 2 is a negative terminal
- the right terminal 3 is a positive terminal
- the concave portion 4 has a bottom wall 4A that forms a bottom portion, and a vertical wall 4B that rises upward from the outer peripheral edge of the bottom wall 4A. Further, inside the concave portion 4, an annular projecting portion 4 ⁇ / b> C projecting upward is provided at a portion of the bottom wall 4 ⁇ / b> A located inside the vertical wall 4 ⁇ / b> B. Although the upper surface of this protrusion 4C is lower than the height of the vertical wall 4B, it does not necessarily have to be the same height at any position.
- the outer peripheral edge 5G of the upper lid 5 covers the groove portion 4M when the lower end of the joint portion 5C of the upper lid 5 and the protruding portion 4C of the lid body 4 are melted and integrated as described later.
- the upper surface of the upper lid 5 and the flat surface 1F of the lid 1 are arranged on substantially the same plane.
- the bottom wall 4A on the inner side of the protrusion 4C is provided with exhaust holes 4D for exhausting gases from the plurality (six in the figure) of the cell chambers. Yes. Note that the number of cell chambers may not be six. As shown in FIGS. 1, 2, and 7A, 7B, 7C, and 7D, the gas exhausted from the plurality of exhaust holes 4D is collected to a specific cell chamber side. In order to form this space, an upper lid 5 that closes the inside of the protruding portion 4C is provided.
- the protruding portion 4C is formed in a substantially rectangular shape in plan view of FIG. 2, and includes a curved portion in which that portion enters the inside so as to bypass a second exhaust hole 4F described later.
- the bottom wall 4A is formed on an inclined surface positioned downward toward the exhaust hole 4D, and the electrolyte solution escaped from each exhaust hole 4D can be returned to the corresponding exhaust hole 4D side. It is designed to function as a possible guide surface. Furthermore, it is provided with extending portions 4E and 4E that extend inward from the opposing positions of the projecting portion 4C to form a gap between the adjacent exhaust holes 4D, and only the gas exhausted from the exhaust holes 4D is a protrusion. The inside of 4C moves freely, and it can prevent as much as possible that the electrolyte solution which escaped from exhaust hole 4D moves to the other exhaust hole 4D side which adjoins.
- FIG. 2 and 3 and FIG. 4C a pair of left and right cylinders that are welded by inserting a pole column (not shown) for taking out electric power, extending from the battery case, into the recess 4.
- the bushings 6 and 7 are embedded.
- the bushings 6 and 7 are connected to the lower sides of the terminals 2 and 3 juxtaposed in the horizontal direction with the bushings 6 and 7 by a conductive portion (not shown).
- the terminals 2 and 3, the bushings 6 and 7, and the conductive portion are integrally formed of lead or a lead alloy to constitute a terminal portion, and the conductive portion is embedded in the lid 1.
- the upper lid 5 is formed of a synthetic resin, and as shown in FIG. 7B, a joint portion 5C having the same outer shape and the same size as the projection portion 4C joined to the projection portion 4C; An outer peripheral edge 5G that covers an annular groove 4M formed between the protruding portion 4C and the vertical wall 4B, and the lower end of the joint portion 5C of the upper lid 5 and the upper end of the protruding portion 4C of the lid body 1 are in a molten state. Then, by combining the protruding portion 4C of the recess 4 and the joint portion 5C of the upper lid 5, both can be melted and integrated.
- the second exhaust hole 4F is provided with a porous filter and a valve (not shown) for the purpose of explosion-proof, prevention of backflow of gas from the outside, and adjustment of internal pressure.
- the joint 5C is also provided with portions corresponding to the pair of extending portions 4E and 4E provided at five locations of the projecting portion 4C, and these are also referred to as the joint 5C.
- the material of the lid 1 and the upper lid 5 is preferably a thermoplastic resin such as polypropylene resin, but may be other synthetic resins.
- a thermoplastic resin such as polypropylene resin
- a second exhaust hole 4F different from the exhaust hole 4D formed in the bottom wall 4A is provided in the bottom wall 4A provided with the fourth exhaust hole 4D from the left in FIG. 1, and the cell provided with this exhaust hole 4D
- gas from other cell chambers is collected through the exhaust hole 4D, and the gas is guided from the second exhaust hole 4F to the outside (see FIG. 5C). Is formed around the groove 4M.
- the specific cell chamber may not be the above-described place. That is, the guide path 8 shown in FIG. 7B protrudes downward from the lower surface of the upper lid 5 and protrudes from the bottom wall 4A so as to match the annular joint 5T.
- the first guide path 9 (see FIG. 5A and FIG.
- the first guide path 9 includes an upper guide portion 9A for moving the gas from the second exhaust hole 4F upward, It is formed by a horizontal guide portion 9B that moves the gas from the upper guide portion 9A in the horizontal direction and a lower guide portion 9C that moves the gas from the horizontal guide portion 9B downward, and the gas from the lower guide portion 9C is
- the second guide route 10 is handed over.
- the upper guide portion 9A guides the gas from the second exhaust hole 4F up to a predetermined height above the cylindrical first upper guide portion 9a and the gas from the first upper guide portion 9a further upward. Accordingly, a cylindrical second upper guide portion 9b having a larger diameter than the first upper guide portion 9a is provided.
- the horizontal guide portion 9B includes a left-right direction guide portion 9c that moves gas to one side in the left-right width direction (right side in FIG. 2) of the lid 1, and a gas guided to the end of the left-right direction guide portion 9c in the guide direction.
- the gas from the second exhaust hole 4F moves through the upper guide portion 9A, the horizontal guide portion 9B, the lower guide portion 9C, and the second guide path 10 to the discharge port.
- the level in the height direction of the discharge port 4K is lower than the level in the height direction of the upper lid 5 (the level in the height direction of the horizontal guide portion 9B).
- the exhausted gas can be made difficult to reach the vicinity of the terminal.
- the second guide path 10 has a discharge port 4K formed in the vertical wall 4B by inserting a rod (a hole-forming rod) into the mold, and forward of the lower guide portion 9C from the vertical wall 4B.
- a tunnel-like through hole 10A is formed between the side wall 9h and the side wall 9h.
- the electrolyte mist and gas discharged from the second exhaust hole 4F pass through the upper guide portion 9A that moves upward, and the valve and the porous filter. Is moved to the horizontal guide portion 9B that moves in the horizontal direction, is further transferred to the second guide path 10 through the lower guide portion 9C that is moved downward, and is then discharged to the outside through the discharge port 4K. It will be.
- the level in the height direction of the discharge port 4K is lower than the level in the height direction of the upper lid 5, and Since the gas reaches the discharge port 4K via the two guide paths 10, there is an advantage that the gas discharged from the discharge port 4K can hardly reach the vicinity of the terminals 2 and 3 along the periphery of the upper lid 5 or the lid body 1.
- the guide path 8 that guides the gas discharged from the second exhaust hole 4F to the discharge port 4K, bypassing the lower side of the groove 4M, the height level of the discharge port 4K is increased.
- the groove 4M and the guide path 8 are not connected, and the discharge port 4K can be connected only to the guide path 8. it can. Accordingly, with the upper lid 5 attached, a guide route is provided by applying pressurized air into the groove 4M with the space between the inner surface 4b of the vertical wall 4B and the outer peripheral surface 5N of the upper lid 5 shown in FIG.
- Each of the bonding states can be detected by the presence or absence of a pressure drop of the pressurized air.
- the discharge port 4 ⁇ / b> K has an annular donut-shaped protrusion 4 ⁇ / b> G protruding from the surface of the vertical wall 4 ⁇ / b> B constituting the lid body 1, and a protrusion 4 ⁇ / b> G in a circumferential direction of the protrusion 4 ⁇ / b> G.
- Three cutouts 4L, 4N, and 4P are provided that allow the discharged gas to be discharged from the radial direction of the protrusion 4G.
- the three cutouts extend through the center of the discharge port 4K to the left and right cutouts 4L and 4P formed on both sides in the left-right direction of the lid 1, and extend to the lower end side of the lid 1 through the center of the discharge port 4K.
- the lower notch 4N is formed as described above. Accordingly, the gas is discharged through the three notches 4L, 4N, and 4P even in the state where the foreign matter is in contact with the surface of the protrusion 4G while omitting the notch extending upward so that dust does not easily collect. It can be done.
- the number of notches 4L, 4N, and 4P, the size of the width, and the like can be freely changed. In addition, you may provide the notch by denting the surface of the vertical wall 4B, without providing the said protrusion 4G.
- one of the lid 1 and the upper lid 5 is provided with a locked portion, and the other is locked to be locked to the locked portion.
- the locking portion protrudes downward from the lower surface of the upper lid 5, and has a circular cross section and an internal hollow cylindrical shape (a solid rod-like body may be used).
- the locked portion includes a pair of left and right holes 11, 12, and one of the pair of left and right holes 11, 12 is locked to the hole 11.
- the portion 5D is formed in a size that prevents the horizontal movement of the portion 5D, and the other hole 12 is formed in a long hole in the direction opposite to the pair of holes 11, 12, that is, an oval shape. Therefore, as described above, before the joint portions 5C and 5T of the upper lid 5 are melted and integrated with the protrusions 4C and 4T of the lid body 1, a pair of locking portions with respect to the pair of holes 11 and 12 is provided. By positioning 5D and 5E, the positioning of the protrusions 4C and 4T of the lid 1 and the joints 5C and 5T of the upper lid 5 is completed, and the lid 1 and the upper lid 5 are moved closer to each other from that state.
- the projecting portions 4C and 4T of the lid 1 and the joint portions 5C and 5T of the upper lid can be reliably joined. And by forming one hole 12 as a long hole, even when the lid 1 and the upper lid 5 are difficult to position due to differences in shrinkage after molding, temperature changes after molding, changes over time, etc. Even when the upper lid 5 expands and contracts in the longitudinal direction according to the room temperature, the long hole 12 absorbs it well so that the engagement is performed smoothly.
- the electrode plate group is accommodated in each of the plurality of cell chambers, and as shown in FIG. 11, the bushing 7 in which the pole column 12 extending from the electrode plate group is inserted and welded to the lid 5.
- a conductive portion 13 for connecting the terminal 3 to the bushing 7 is formed integrally with the bushing 7 and the terminal 3 to form a terminal portion, and at least the bushing 7 of the terminal portions is formed.
- the lower portion and the conductive portion 13 are embedded in the lid body 2 by insert molding.
- a black portion B indicates a welded portion in which the bushing 7 and the pole 12 are welded by a burner or the like.
- the outer diameter of the upper end side of the pole column 12 is smaller than the outer diameter of the lower end side, but the inner diameter of the upper portion of the bushing 7 is made smaller than the inner diameter of the lower portion, If the outer diameter on the upper end side is made smaller than the outer diameter on the lower end side, the pole column 12 can be easily inserted into the bushing 7, and misalignment during insertion can be prevented.
- the terminals 2 and 3 are formed in the rectangular top plate portions 2A and 3A and in the front view of the four sides of the top plate portions 2A and 3A.
- the bolts 15 penetrated through the through holes 2a.
- the nut 14 can be fixed to the terminal 2 with a bolt 15 by screwing the tip into a nut 14 inserted into the terminal 2.
- An external lead wire (a wire that can be connected to an on-vehicle electrical component or the like) that is not illustrated is sandwiched and fixed between the bolt 15 and the nut 14.
- the bolt 15 By forming the two through holes 2a, 2b and 3a, 3b, the bolt 15 can be inserted into the terminals 2, 3 from either the upper side or the front side.
- the lid 1 will be described in detail. As shown in FIGS. 1, 2 and 4A to 4D, the terminals 2 and 3 of the first lid portion 1A of the lid 1 are arranged. A protrusion 13 whose upper surface 13a is higher than the upper surface 13R of the first lid portion 1A is formed at a location where the lower portion is embedded and the upper portion is protruded.
- a pair of protrusions extending from the two longitudinal directions of one side of the terminal side of the second lid portion 1B to the end (front end in the front-rear direction) of the lid body 1 and projecting from the upper surface of the first lid portion 1A.
- the first lid part is formed with extension parts 1C, 1D, and is surrounded by the pair of extension parts 1C, 1D and the vertical walls of the second lid part 1B located at both ends in the longitudinal direction (left-right direction) of one side.
- the protrusion 13 is formed on 1A, and the terminals 2 and 3 are integrally molded on the protrusion 13.
- the protrusions 13 are positioned on both sides of the first convex portion 13A in which the lower ends of the terminals 2 and 3 are embedded, and in the longitudinal direction of one side of the first convex portion 13A, and the upper surface of the first convex portion 13A.
- the second convex portion 13B having an upper surface 13b protruding upward from 13a and a third convex portion 13C having the same upper surface 13c are inserted, and the nut 14 of the terminal 2 is inserted as shown in FIG.
- An opening 2H is formed at the end of the third convex portion 13C (the same opening 3H of the terminal 3 is formed at the end of the second convex portion 13B), and a bottom surface 2G of the opening 2H is formed on the third convex portion 13C. It is lower than the upper surface 13c (the bottom surface 3G of the opening 3H is lower than the upper surface 13b of the second convex portion 13B).
- the first convex portion 13A, the second convex portion 13B, and the third convex portion 13C are formed so as to be integrated with the vertical wall of the lid 1.
- the openings 2H and 3H into which the nut 14 can be inserted are formed at the side end of the third convex portion 13C or the side end of the second convex portion 13B of the terminal 2 or 3, and the bottom surfaces 2G and 3G of the opening. Is made lower than the upper surface 13c of the third convex portion 13C or the upper surface 13b of the second convex portion 13B, so that the nut 14 is disposed on the upper surface 13c of the third convex portion 13C as shown in FIG. It can be slid and inserted into the inside of the terminal 2 through the opening 2H.
- the nut 14 inserted into the terminal 2 does not fall because the bottom surface 2G of the opening 2H of the terminal 2 is lower than the top surface 13c of the third convex portion 13C.
- FIG. 4D only the left terminal 2 is shown, but the right terminal 3 is the same.
- the nut 14 is inserted into the terminals 2 and 3 from the right side, and the second convex portions provided on the left and right sides respectively.
- 13B and the 3rd convex part 13C are arrange
- the upper surface 13b of the said 2nd convex part 13B and the upper surface 13c of the 3rd convex part 13C are set to the same height, you may make it different.
- the nut 14 has a rectangular parallelepiped shape, and the nut 14 can be moved and guided stably while being in surface contact with the upper surface 13b of the second convex portion 13B or the upper surface 13c of the third convex portion 13C which is a flat surface. There is.
- FIG. 4 (d) shows a state before the nut 14 is inserted into the left terminal 2
- FIG. 4 (c) shows a state in which the nut 14 is inserted into the left terminal 2 and then the inserted nut 14 is bolt 15
- the state fixed in the terminal 2 is shown.
- the portion of the lid body 1 is deformed into a convex shape, and the back side portion of the lid body 1 is formed.
- the terminals 2 and 3 are insert-molded when the lid body 1 is molded, as shown in FIG. 8B, the terminal 2 side of the lower end 1Z of the lid body 1 can be suppressed.
- the bend is reduced unlike FIG. Actually, the vertical dimension L1 of the extended line of the lower end 1Z and the bent line on the side away from the terminal 2 in FIG. 8A and the side of the side away from the terminal 2 in FIG.
- the second and third convex portions 13B and 13C have a problem that when the nut is placed on the upper surface and slid and inserted into the terminal through the opening of the terminal, it becomes difficult to insert the nut due to the above-described deformation. What is necessary is just to define the height dimension and the formation range in planar view with respect to the said dimension L, and it is not limited to what is shown by a figure. Further, the shapes of the three convex portions 13A, 13B, and 13C are not limited to those shown in the drawing. Furthermore, the convex portions 13A, 13B, and 13C do not necessarily have to be provided.
- FIG. 1 and FIG. 2 only a part of the wall surface in the longitudinal center portion (portions where the exhaust holes 4K are provided) located between the positive and negative terminals of the lid, although it was located in the front end face direction of the battery case from (the part where the positive and negative electrode terminals are provided), as shown in FIG. 9, all the wall surfaces in the central part in the longitudinal direction (over the left and right extending parts 1C and 1D).
- the effect of suppressing deformation of the lid can be enhanced by positioning the wall surface in the front end surface direction of the battery case relative to the wall surfaces (positive and negative electrode terminal portions) at both ends in the longitudinal direction.
- the effect of suppressing deformation of the lid 1 can be enhanced.
- the entire wall surface at the center in the longitudinal direction is the front end of the battery case. Even if it is the same position as the wall surface (the part where the positive and negative electrode terminals are provided) at both ends in the longitudinal direction with respect to the surface, it is only necessary to provide the first convex part 13A, the second convex part 13B, and the third convex part 13C.
- the guide path does not include the left-right direction guide portion 9c, but includes only the front-rear direction guide portion 9d).
- the guide path 8 for guiding to the discharge port 4K is formed by bypassing the groove 4M by forming the tunnel-shaped through hole 10A, but the second exhaust hole 4F is formed by the U-shaped wall portion.
- the guide path 8 may be formed by bypassing the groove portion 4M by surrounding the wall portion and connecting both end portions of the wall portion to the vertical wall 4B.
- the horizontal guide portion 9B is provided with a slope, the level in the height direction of the discharge port 4K can be made lower than the level in the height direction of the upper lid 5, but the lower guide portion 9C is not provided, The horizontal guide portion 9B is not provided.
- the level in the height direction of the discharge port 4K can be set as described above and the discharged gas can hardly reach the vicinity of the terminal, the continuous horizontal guide portion 9B and the lower guide portion can be obtained. 9C.
- the horizontal guide portion 9B is guided to the left and right direction guide portion 9c that moves the gas to one side in the left and right width direction (right side in FIG. 2) of the lid 1 and the end of the left and right direction guide portion in the guide direction.
- the front and rear direction guide portion 9d that moves the generated gas to one side in the front and rear direction of the lid body 1 (downward in FIG. 2) is configured, but the front and rear direction guide portion 9d is omitted and only the left and right direction guide portion 9c is configured. May be.
- the gas discharge port 4K protrudes from the front surface of the vertical wall 4B.
- the gas discharge port 4K is composed of only the left and right direction guide portion 9c, it is flush with the front surface of the vertical wall 4B. Can be.
- the left-right direction guide part 9c was set as the structure moved to the right side in FIG. 2, the structure moved to the left side may be sufficient.
- the horizontal guide portion 9B is omitted by shifting the position of the second exhaust hole 4F shown in FIG. 2 to the rear side in the front-rear direction, and only the front-rear direction guide portion along the front-rear direction with respect to the second exhaust hole 4F. It can also consist of.
- the space exhausted from the exhaust hole 4D for each cell chamber is collected in a specific cell chamber, and the gas collected in the space is guided to the outside through the second exhaust hole 4F.
- the second exhaust hole 4F for exhausting air from a specific place is omitted and exhausted from an arbitrary place.
- the discharge port 4K is provided in the front surface, if the direction and length of a 1st guide route or a 2nd guide route are considered, it can be provided in a side surface or a rear surface.
- the joints 5C and 5T of the upper lid 5 and the protrusions 4C and 4T of the lid 1 are melted so that the projections 4C and 4T of the lid 1 and the joints 5C and 5T of the upper lid 5 are integrated.
- a configuration in which the joint portions 5C and 5T of the upper lid 5 and the protruding portions 4C and 4T of the lid body 1 are integrated by an adhesive may be employed.
- the other hole 12 is formed in a long hole that is long in the opposing direction of the pair of holes 11, that is, an oval shape.
- the other hole 12 may have a rectangular shape with both ends squared.
- the upper cover 5 was comprised from the rectangular-shaped thing, what kind of shapes, such as a square, an ellipse, or a circle, may be sufficient.
- the locking portion is composed of a rod-shaped body, any shape can be used as long as the locking portion can be locked in the hole of the locked portion, the locking portion is a hole, and the locked portion is a rod-shaped body. It may be.
- a guide path is provided for collecting gas in a specific cell chamber and guiding the gas from the cell chamber to the outside through the second exhaust hole.
- the second exhaust hole may be omitted.
- FIGS. 12 (a) and 12 (b) This specific configuration is shown in FIGS. 12 (a) and 12 (b).
- a concave portion 4 that is recessed downward is formed on the upper surface of the lid 1, and the concave portion 4 is raised upward from the bottom wall 4A that forms the bottom portion and the outer peripheral edge of the bottom wall 4A.
- a vertical wall 4B is provided, and the six exhaust holes 4D and the second exhaust holes 4F are formed in the bottom wall 4A. Then, the second exhaust hole 4F is surrounded by an arcuate wall 4H and projecting portions 4I projecting forward from both ends of the wall 4H and continuing to the vertical wall 4B are further formed, and the pair of linear shapes
- the guide path is formed inside the protrusions 4I, 4I.
- the guide path is formed by joining the wall portion 4H and the projecting portions 4I and 4I to an annular joint portion 5T (see FIG. 12B) provided on the lower surface of the upper lid 5 so as to match the guide portion.
- the upper guide portion is formed and moved upward from the second exhaust hole 4F, and is composed of two guide portions that move forward from the upper end of the upper guide portion. Further, an annular protrusion 4C is formed by protruding upward on the bottom wall 4A inside the vertical wall 4B, and a groove 4M is formed between the protrusion 4C and the vertical wall 4B.
- the protruding portion 4C is bonded to a bonding portion 5C provided on the lower surface of the upper lid 5 and different from the bonding portion 5T, thereby sealing the inner side of the protruding portion 4C, and the groove portion 4M to the outer periphery of the upper lid 5. Covered with 5G. 4E shown in FIG.
- the upper lid 5 is provided with extending portions corresponding to these extending portions 4E and 4E.
- the groove 4M is formed between the annular protrusion 4C, the vertical wall 4B, the wall 4H, and the protrusions 4I and 4I.
- a mounted state by applying pressurized air into the groove 4M from the gap between the vertical wall 4B and the upper lid 5, the projections 4I and 4I of the lid body 1 that separates the guide path and the groove 4M, and the joint of the upper lid 5 5T, the bonding state between the wall portion 4H and the bonding portion 5T of the upper lid 5, and the protruding portion 4C of the lid body 1 that isolates the space and the groove portion 4M, respectively, and the bonding portion 5C of the upper lid 5
- a defective bonding state can be detected by the presence or absence of a pressure drop in the pressurized air.
- the gas is moved to the horizontal guide portion 9 ⁇ / b> B to one side in the left-right width direction (right side in FIG. 2).
- a front-rear direction guide part 9d for moving the gas guided to the end of the left-right direction guide part 9c to the one end in the front-rear direction (lower side in FIG. 2).
- the left-right direction guide part 9c is abbreviate
- a guide path is provided for collecting gas in a specific cell chamber and leading the cell chamber to the outside through the second exhaust hole.
- the second exhaust hole is omitted with the space as a guide path.
- the gas discharge port 4K protrudes from the front surface of the vertical wall 4B.
- the gas discharge port 4K is composed of only the left and right direction guide portion 9c, it is flush with the front surface of the vertical wall 4B. Can be.
- the rod (hole forming rod) to be inserted into the mold becomes long and it becomes difficult to form the discharge port 4K.
- the front end of the lid 1 It is better not to be on the same plane.
- the left-right direction guide part 9c was set as the structure moved to the right side in FIG. 2, the structure moved to the left side may be sufficient.
- the battery case having a plurality of cell chambers is shown, but a battery case having one cell chamber may be used.
- an exhaust hole for discharging from the cell chamber to the outside through the guide path is provided in a state communicating with the guide path.
- SYMBOLS 1 Cover body, 1A ... 1st cover part, 1B ... 2nd cover part, 1C, 1D ... Extension part, 1F ... Flat surface, 1Z ... Lower end, 2, 3 ... Terminal, 2A, 3A ... Top plate part, 2B, 3B ... front plate portion, 2C, 3C ... rear plate portion, 2D, 3D ... left plate portion, 2G, 3G ... bottom surface, 2H, 3H ... opening, 2a, 2b, 3a, 3b ... through hole, 4 ... recess 4A ... Bottom wall, 4B ... Vertical wall, 4C, 4T ... Projection part, 4D ... Exhaust hole, 4E ...
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
Description
複数に仕切られたセル室を備えた電槽と、該電槽の上部開口を覆う蓋体とを備え、該蓋体は上面に凹部が形成され、該凹部は、底部を形成する底壁とその底壁の外周縁から上方に立ち上げられた縦壁とを有し、前記縦壁よりも内側に位置する底壁に上方へ突出する環状の突出部を備えるとともに、該突出部の内側の底壁に前記複数のセル室からのガスをそれぞれ排気する排気孔を備え、該複数の排気孔から排気されたガスを特定のセル室側へ集めるための空間を形成するべく、前記蓋体の凹部を閉じる上蓋を備えている。
そして、前記上蓋は、前記突出部に溶着により接合される接合部を備え、前記特定のセル室に集められたガスを外部に排出するべく、該特定のセル室に対応する前記底壁に形成された前記排気孔とは異なる第2排気孔を該底壁に備え、第2排気孔からのガスを外部へ排出するための排出口まで案内する排気経路を、第2排気孔の周縁の仕切壁に上蓋を接合することにより形成し、前記排気経路をトンネル状に構成したものが既に提案されている(例えば、特許文献1参照)。
また、前述した、複数の排気孔から排気されたガスを特定のセル室に集めるための空間を、少なくとも1つのセル室からのガスを外部に導く案内経路とし、第2排気孔を省略して形成したことを特徴とし、具体的には、少なくとも1つのセル室を備えた電槽と、該電槽の上部開口を覆う蓋体とを備え、かつ前記蓋体の上面には、下方に凹んだ凹部が形成されるとともに該凹部を閉じる上蓋を備え、前記凹部は、底部を形成する底壁とその底壁の外周縁から上方に立ち上げられた縦壁とを有し、前記縦壁よりも内側に位置する底壁に上方へ突出する環状の突出部を備え、該突出部の内側の底壁に前記セル室からのガスを排気する排気孔を備え、該排気孔から排気されたガスを外部に導く案内経路を、前記突出部と前記上蓋に設けた接合部とを接合することで形成し、かつ前記突出部と前記縦壁との間に形成される環状の溝部を前記上蓋の外周縁で覆うとともに、前記案内経路を前記溝部と隔離して形成したことを特徴としている。
なお、ここで言う特定のセル室の数は、例えばセル室が6個の場合、3個ずつのセル室から2個の特定のセル室に集める構成にするなど、1個でなくてもよい。
上記のように、少なくとも案内方向の異なる3つの案内部を備えさせることによって、排出口の高さ方向のレベルが上蓋の高さ方向のレベルより低くなり、排出口から排出されたガスが上蓋あるいは蓋体の周縁を伝って端子の近傍に達し難くできる。
前記凹部4は、第2蓋部分1Bの上面のうちの第1蓋部分1A側端から前後方向で半分となる位置よりも少し後側に寄った位置までの広い範囲に渡って形成されている。また、他方の長辺側(前後方向後端側)に凹部4の無いフラット面1Fを備えさせることによって、そのフラット面1Fに型番などが記されたシールなどを貼るスペースとして利用することができるようにしている。このように、蓋体1の上面のフラット面1Fがシールを貼るスペースとして利用できることで、前記シールに種々のデータと照合するための参照符号を記載しておけば、上蓋5の装着前の工程におけるデータ、例えば注液時のデータを前記参照符号に基づいて照合することができる(従来は、特許文献1に基づいて説明すれば、このようなシールは上蓋19の装着後、すなわち注液して上蓋19の装着後に上蓋19の表面に貼っていたため、シールにこのような参照符号を記載していても、前記参照符号に基づいて注液時のデータを照合することができなかった)。図2において左側の端子2が負極端子であり、右側の端子3が正極端子である。
そして、図1、図2及び図7(a),(b),(c),(d)に示すように、前記複数の排気孔4Dから排気されたガスを特定のセル室側へ集めるための空間を形成するべく、前記突出部4Cの内側を閉じる上蓋5を備えている。前記突出部4Cは、図2の平面視においてほぼ長方形状に構成され、後述する第2排気孔4Fを迂回することができるように、その部分が内側に入り込んだ湾曲部を備えている。また、前記底壁4Aは、前記排気孔4Dに向かうほど下方に位置する傾斜面に形成されており、各排気孔4Dから逸出してきた電解液を該当する各排気孔4D側へ戻すことができる案内面として機能するようにしている。さらに、突出部4Cの相対向位置から内側に延びて隣り合う各排気孔4Dの間に間隙を形成する延出部4E,4Eを備えており、排気孔4Dから排気されたガスのみが突起部4Cの内側を自由に移動し、排気孔4Dから逸出してきた電解液が隣り合う他の排気孔4D側へ移動することを可及的に阻止することができるようにしている。
前記端子2,3とブッシング6,7と導通部とを鉛又は鉛合金にて一体成型することにより端子部を構成し、導通部が蓋体1に埋設された状態になっている。
前記上方案内部9Aは、第2排気孔4Fからのガスを上方の所定高さまで立ち上げる円筒状の第1上方案内部9aと、この第1上方案内部9aからのガスを更に上方まで案内するべく、第1上方案内部9aよりも大きな直径を有する円筒状の第2上方案内部9bとを備えている。
また、前記水平案内部9Bは、蓋体1の左右幅方向一方側(図2では右側)へガスを移動させる左右方向案内部9cと、左右方向案内部9cの案内方向終端に案内されたガスを蓋体1の厚み方向(前記左右幅方向と直交する前後方向)一方側(図2では下側)へ移動させる前後方向案内部9dとを備えている。
ところで、鉛蓄電池を車に搭載して使用する場合に、第2排気孔4Fからのガスは上方案内部9A、水平案内部9B、下方案内部9C、第2案内経路10を移動して排出口4Kから排出されるが、図5(c)に示すように、排出口4Kの高さ方向のレベルは上蓋5の高さ方向のレベル(水平案内部9Bの高さ方向のレベル)より低くしたことで、排出されたガスを端子の近傍に達し難くすることができる。
しかしながら、前記のように案内方向の異なる3つの案内部9A,9B,9Cを備えていることから、排出口4Kの高さ方向のレベルが上蓋5の高さ方向のレベルより低くなり、さらに第2案内経路10を経て排出口4Kに至っていることから、排出口4Kから排出されたガスが上蓋5あるいは蓋体1の周縁を伝って端子2,3の近傍に達し難くできる利点がある。
従って、上蓋5を装着した状態で、図1に示す縦壁4Bの内側面4bと上蓋5の外周面5Nとの間を密閉下にして溝部4M内に加圧エアを加えることによって、案内経路8と溝部4Mを隔離する蓋体1の突出部4Tと上蓋5の接合部5Tとの接合状態、及び前記空間と溝部4Mを隔離する蓋体1の突出部4Cと上蓋5の接合部5Cとの接合状態、のそれぞれの不良を加圧エアの圧力低下の有無で検出することができる。
図7(a)~(d)に示すように、前記係止部が、前記上蓋5の下面に下方に突出させ、断面形状円形で内部中空の円筒形状(内部が中実の棒状体でもよい)を有する左右一対の筒体5D,5Eからなっている。
また、図2に示すように、前記被係止部が左右一対の孔11,12からなり、前記左右一対の孔11,12のうちの一方の孔11をその孔11に係止する係止部5Dの水平方向への移動を阻止する大きさに形成し、かつ、他方の孔12を一対の孔11,12の対向方向に長い長孔、つまり長円形に形成している。
従って、前述のように上蓋5の接合部5C,5Tを溶融して蓋体1の突出部4C,4Tに合わせて一体化させる前に、一対の孔11,12に対して一対の係止部5D,5Eが係止して、蓋体1の突出部4C,4Tと上蓋5の接合部5C,5Tとの位置決めが完了し、その状態から蓋体1と上蓋5とを接近移動させることにより、蓋体1の突出部4C,4Tと上蓋の接合部5C,5Tとを確実に接合させることができるようになっている。そして、一方の孔12を長孔に形成することによって、蓋体1と上蓋5とが成型後の収縮率の違いや成型後の温度変化、経時変化等によって位置決めが困難になった場合でも、上蓋5が室温に応じて長手方向に伸縮した場合でも、それを長孔12が良好に吸収して係合がスムーズに行われるようになっている。
上記のように、ナット14を挿入可能な開口2H,3Hを前記端子2又は3の第3凸部分13Cの側端又は第2凸部分13Bの側端に形成し、前記開口の底面2G,3Gを前記第3凸部分13Cの上面13c又は第2凸部分13Bの上面13bよりも低くすることによって、図4(d)に示すように、第3凸部分13Cの上面13cにナット14を配置して滑らせて端子2の開口2Hより内部へ落とし込んで挿入することができる。そして、端子2内に挿入されたナット14は端子2の開口2Hの底面2Gが第3凸部分13Cの上面13cより低くなっていることで落下しないようになっている。図4(d)では、左側の端子2のみ図示しているが、右側の端子3も同様になっている。尚、図では、左右端子を同一構造の端子を用いている関係上、いずれの端子2,3へも右側からナット14を挿入することになり、また、左右それぞれに備えている第2凸部分13Bと第3凸部分13Cとが左右方向で反対の位置関係になるように配置されている。また、前記第2凸部分13Bの上面13bと第3凸部分13Cの上面13cとを同一高さに設定しているが、異ならせてもよい。
尚、前記第2、第3凸部分13B,13Cはその上面にナットを配置して滑らせて端子の開口より内部に落とし込んで挿入する場合に、上記した変形によってナットが挿入できにくくなるという問題を回避するものであり、上記寸法Lに対してその高さ寸法及び平面視における形成範囲を定めればよく、図に示されるものに限定されるものではない。また、それら3つの凸部分13A,13B,13Cの形状もまた、図に示されるものに限定されるものではない。さらに、凸部分13A,13B,13Cは必ずしもすべてを具備しなくてもよい。
図12(a)では、蓋体1の上面に下方に凹んだ凹部4を形成し、その凹部4が底部を形成する底壁4Aと、その底壁4Aの外周縁から上方に立ち上げられた縦壁4Bとを備え、前記底壁4Aに前記6個の排気孔4Dと前記第2排気孔4Fとを形成している。そして、前記第2排気孔4Fを円弧状の壁部4Hにより包囲するとともにこの壁部4Hの両端からそれぞれ前方に突出して前記縦壁4Bに連なる突出部4Iをさらに形成し、該一対の直線状の突出部4I,4Iの内側に前記案内経路を形成している。この案内経路は、前記壁部4H及び突出部4I,4Iと、これに合致するように上蓋5の下面に備えた環状の接合部5T(図12(b)参照)とが接合されることで形成され、第2排気孔4Fから上方に移動させる上方案内部とこの上方案内部の上端から前方へ移動させる水平案内部の2つの案内部から構成されている。また、前記縦壁4Bよりも内側の底壁4Aに上方に突出して環状の突出部4Cを形成し、該突出部4Cと前記縦壁4Bとの間に溝部4Mを形成している。この突出部4Cは、前記上蓋5の下面に備えられた、前記接合部5Tとは異なる接合部5Cに接合することによって、突出部4Cの内側を密閉し、前記溝部4Mを上蓋5の外周縁5Gで覆っている。尚、図12(a)に示す4Eは、前記突出部4Cの相対向位置から内側に延びて隣り合う排気孔4D,4D間に位置する間隙を形成するための延出部4E,4Eである。これら延出部4E,4Eに対応する延出部を前記上蓋5に備えている。
Claims (14)
- 少なくとも1つのセル室を備えた電槽と、該電槽の上部開口を覆う蓋体とを備え、かつ前記蓋体の上面には、下方に凹んだ凹部が形成されるとともに該凹部を閉じる上蓋を備え、前記凹部は、底部を形成する底壁とその底壁の外周縁から上方に立ち上げられた縦壁とを有し、前記縦壁よりも内側に位置する底壁に上方へ突出する環状の突出部を備え、該突出部の内側の底壁に前記セル室からのガスを排気する排気孔を備え、該排気孔から排気されたガスを外部に導く案内経路を、前記突出部と前記上蓋に設けた接合部とを接合することで形成し、かつ前記突出部と前記縦壁との間に形成される環状の溝部を前記上蓋の外周縁で覆うとともに、前記案内経路を前記溝部と隔離して形成したことを特徴とする鉛蓄電池。
- 前記案内経路が、前記排気孔から排出されたガスを上方に移動させる上方案内部、該上方案内部からのガスを水平方向に移動させる水平案内部、及び該水平案内部からのガスを下方に移動させる下方案内部からなる第1案内経路と、前記下方案内部からのガスを前記排出口に案内する第2案内経路とを備えたことを特徴とする請求項1記載の鉛蓄電池。
- 前記蓋体及び前記上蓋の一方に被係止部を備え、かつ、他方に該被係止部に係止する係止部を備え、前記被係止部が一対の孔からなり、前記一対の孔のうちの一方の孔をその孔に係止する係止部の水平方向への移動を阻止する大きさに形成し、かつ、他方の孔を一対の孔の対向方向に長い長孔に形成したことを特徴とする請求項1又は2記載の鉛蓄電池。
- 前記セル室に極板群が収納されるとともに、前記蓋体に、前記極板群から延びる極柱が挿入されて溶接されるブッシング及び端子を備え、かつ前記ブッシングに前記端子を接続するための導通部がブッシング及び端子と一体成形されて端子部を形成するとともに、前記端子部のうちの少なくともブッシングの下側部分と前記導通部とがインサート成型によって蓋体に埋め込まれていることを特徴とする請求項1記載の鉛蓄電池。
- 前記蓋体の一辺側でかつ該一辺の長手方向両端部のそれぞれに、正、負極の各端子の下側部分を埋設し、上側部分を突設させるとともに、前記蓋体の、各端子の上側部分が突設される箇所の周縁及び/又はその近傍に突起部を形成したことを特徴とする請求項4記載の鉛蓄電池。
- 前記突起部が、前記各端子の上側部分が突設される箇所の周縁の第1凸部分と、該第1凸部分の近傍の長手方向両側に位置し、かつ、該第1凸部分よりも上方に突出する第2凸部分及び第3凸部分とを備え、前記端子に、ナットを挿入可能な開口を前記第2凸部分の側端又は第3凸部分の側端に形成し、前記開口の底面を前記第2凸部分又は第3凸部分の上面よりも低くしたことを特徴とする請求項5記載の鉛蓄電池。
- 複数に仕切られたセル室を備えた電槽と、該電槽の上部開口を覆う蓋体とを備え、かつ前記蓋体の上面には、下方に凹んだ凹部が形成されるとともに該凹部を閉じる上蓋を備え、前記凹部は、底部を形成する底壁とその底壁の外周縁から上方に立ち上げられた縦壁とを有し、前記縦壁よりも内側に位置する底壁に上方へ突出する環状の突出部を備え、該突出部の内側の底壁に前記複数のセル室からのガスをそれぞれ排気する排気孔を備え、該複数の排気孔から排気されたガスを特定のセル室側へ集めるための空間を、前記突出部と前記上蓋に設けた接合部とを接合することで形成し、かつ前記突出部と前記縦壁との間に形成される環状の溝部を前記上蓋の外周縁で覆い、前記特定のセル室に集められたガスを外部に排出するべく、前記特定のセル室に対応する前記底壁に形成された前記排気孔とは異なる第2排気孔を該底壁に備え、前記第2排気孔から排出されたガスを外部に導く案内経路を、前記溝部と隔離して形成したことを特徴とする鉛蓄電池。
- 前記案内経路が、前記第2排気孔から排出されたガスを上方に移動させる上方案内部、該上方案内部からのガスを水平方向に移動させる水平案内部、及び該水平案内部からのガスを下方に移動させる下方案内部からなる第1案内経路と、前記下方案内部からのガスを前記排出口に案内する第2案内経路とを備えたことを特徴とする請求項7記載の鉛蓄電池。
- 前記排出口が、ガスを排出口の径方向から排出可能となる切欠部を備えたことを特徴とする請求項8記載の鉛蓄電池。
- 前記案内経路を、第2排気孔を包囲する突出部の内側に形成される第1案内経路と、該第1案内経路の一部から前記溝部を形成する底壁の下方と縦壁を貫通してガスを外部に排出する排出口に至るトンネル状の第2案内経路とで構成したことを特徴とする請求項7記載の鉛蓄電池。
- 前記蓋体及び前記上蓋の一方に被係止部を備え、かつ、他方に該被係止部に係止する係止部を備え、前記被係止部が一対の孔からなり、前記一対の孔のうちの一方の孔をその孔に係止する係止部の水平方向への移動を阻止する大きさに形成し、かつ、他方の孔を一対の孔の対向方向に長い長孔に形成したことを特徴とする請求項7又は8記載の鉛蓄電池。
- 前記複数のセル室の各々に極板群が収納されるとともに、前記蓋体に、前記極板群から延びる極柱が挿入されて溶接されるブッシング及び端子を備え、かつ前記ブッシングに前記端子を接続するための導通部がブッシング及び端子と一体成形されて端子部を形成するとともに、前記端子部のうちの少なくともブッシングの下側部分と前記導通部とがインサート成型によって蓋体に埋め込まれていることを特徴とする請求項7記載の鉛蓄電池。
- 前記蓋体の一辺側でかつ該一辺の長手方向両端部のそれぞれに、正、負極の各端子の下側部分を埋設し、上側部分を突設させるとともに、前記蓋体の、各端子の上側部分が突設される箇所の周縁及び/又はその近傍に突起部を形成したことを特徴とする請求項12記載の鉛蓄電池。
- 前記突起部が、前記各端子の上側部分が突設される箇所の周縁の第1凸部分と、該第1凸部分の近傍の長手方向両側に位置し、かつ、該第1凸部分よりも上方に突出する第2凸部分及び第3凸部分とを備え、前記端子に、ナットを挿入可能な開口を前記第2凸部分の側端又は第3凸部分の側端に形成し、前記開口の底面を前記第2凸部分又は第3凸部分の上面よりも低くしたことを特徴とする請求項13記載の鉛蓄電池。
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AU2009278426A AU2009278426B8 (en) | 2008-08-08 | 2009-08-04 | Lead-Acid battery |
CN200980127404.4A CN102089900B (zh) | 2008-08-08 | 2009-08-04 | 铅蓄电池 |
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Publication number | Publication date |
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KR20110042266A (ko) | 2011-04-26 |
AU2009278426B2 (en) | 2014-02-20 |
CN102089900B (zh) | 2014-03-12 |
US20110135979A1 (en) | 2011-06-09 |
EP2320494A1 (en) | 2011-05-11 |
CN102089900A (zh) | 2011-06-08 |
AU2009278426B8 (en) | 2014-03-06 |
KR101552872B1 (ko) | 2015-09-18 |
BRPI0912471B1 (pt) | 2020-11-17 |
US8652669B2 (en) | 2014-02-18 |
AU2009278426A1 (en) | 2010-02-11 |
BRPI0912471A2 (pt) | 2019-12-24 |
EP2320494B1 (en) | 2018-04-11 |
EP2320494A4 (en) | 2014-03-19 |
CA2733168A1 (en) | 2010-02-11 |
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