WO2000057502A1 - Dispositif de degazage pour batterie - Google Patents

Dispositif de degazage pour batterie Download PDF

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Publication number
WO2000057502A1
WO2000057502A1 PCT/NZ1999/000032 NZ9900032W WO0057502A1 WO 2000057502 A1 WO2000057502 A1 WO 2000057502A1 NZ 9900032 W NZ9900032 W NZ 9900032W WO 0057502 A1 WO0057502 A1 WO 0057502A1
Authority
WO
WIPO (PCT)
Prior art keywords
cells
condensation
battery
floor
condensation chambers
Prior art date
Application number
PCT/NZ1999/000032
Other languages
English (en)
Inventor
Ian G. Mawston
Wong Sheung Lung
Original Assignee
Glory Win International Group Limited
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 Glory Win International Group Limited filed Critical Glory Win International Group Limited
Priority to GB0028442A priority Critical patent/GB2353630A/en
Priority to JP2000607291A priority patent/JP2002540567A/ja
Priority to AU31764/99A priority patent/AU3176499A/en
Priority to PCT/NZ1999/000032 priority patent/WO2000057502A1/fr
Priority to CN99807789A priority patent/CN1306679A/zh
Publication of WO2000057502A1 publication Critical patent/WO2000057502A1/fr

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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
    • H01M50/30—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 pertains to a venting system for a battery.
  • the present invention relates to a venting system for a lead-acid storage battery that may be used for automotive vehicles.
  • Lead-acid storage batteries are well known in the art. Lead acid storage batteries are used for a variety of applications, including in vehicles such as automobiles, trucks, boats, airplanes, and in light utility vehicles such as golf carts.
  • a lead-acid storage battery typically comprises a battery case for housing the active elements of the battery.
  • the active elements are maintained in separate compartments commonly referred to as "cells" .
  • a typical lead-acid storage battery has at least six cells, each producing a potential of 2 volts.
  • the cells are usually rectangular, each cell comprising a plurality of alternating positive and negative plates divided by separators.
  • the positive plates normally contain lead dioxide as their active material and the negative plates normally contain metallic lead in a highly porous structure as their active material.
  • the separators are made of sheets of porous, nonconducting material to insulate each positive and negative plate from its immediate neighbor.
  • the lead-acid storage battery is activated by the introduction into the cells of an aqueous solution known as an electrolyte.
  • the electrolyte is a concentrated solution of sulfuric acid and water that has a predetermined specific gravity.
  • the specific gravity of the electrolyte is chemically designed to fulfill the electrochemical requirements of the battery.
  • Electrolyte introduced into the cells causes a chemical reaction to take place.
  • the positive plates chemically react to the electrolyte to produce water and lead sulfate.
  • the negative plates chemically react to the electrolyte to produce lead sulfate.
  • the reactions within the positive and negative plates continue until the electrolyte becomes diluted with water.
  • the battery is said to have been “discharged. "
  • a feature of the lead-acid storage battery is that it is chemically reversible.
  • the process of discharging the battery is reversed by passing a current through the positive and negative plates in a direction opposite to the direction of discharge. As current passes through the plates, the lead sulfate is split into lead and SO 4 and the water is split into hydrogen and oxygen.
  • the SO 4 combines with the hydrogen to produce sulfuric acid.
  • the oxygen combines with the lead to form lead dioxide. This process is known in the art as "charging”.
  • venting systems wherein the gases are vented through baffled passages and vent holes in the cover of the battery.
  • venting system designs that are well known in the art: the vertical-type venting system and the horizontal-type venting system.
  • a typical vertical-type venting system includes a vent plug, a filler well, and baffles.
  • the vent plug generally includes a deep cylindrical chamber having a floor which fits into the filler well. As gases are vertically vented from the cells, the heavier electrolyte falls to the chamber floor.
  • the chamber floor is formed to slope toward a central dual purpose drain and vent opening through which the gases rise vertically and the electrolyte collected on the chamber floor drains back into the cells.
  • the horizontal-type venting system typically includes a plurality of elongated trapping chambers, a dual purpose drain and vent opening (similar to that of the vertical-type venting system), baffles, and at least one exhaust port.
  • the plurality of elongated trapping chambers extend horizontally across at least a portion of the battery.
  • the dual purpose drain and vent opening is located laterally from the exhaust port. Accordingly, the electrolyte and gases that enter the chamber must traverse the length of the chamber to reach the exhaust port.
  • the baffles control the flow of the gases and the floors of the chamber are usually sloped to encourage the return of electrolyte to the cells through the dual purpose drain and vent opening.
  • Horizontal-type venting systems may also include a manifold system that allows the communication or mixing of gases between and among the plurality of elongate trapping chambers.
  • the use of the manifold system is intended to reduce the amount of exhaust ports needed to vent the gases and, as a result, reduce costs.
  • U.S. Patents 4,371,591 , 4,486,516, 4,891,270, and 5,424, 146, are representative of the horizontal-type venting system.
  • the horizontal-type venting system is considered an improvement over the vertical-type venting system.
  • the horizontal-type venting system is intended to maximize the area in which the gases may be vented.
  • Designs of horizontal-type venting systems often included many complex and intricate parts. The complexity of the parts is intended to force the gases to traverse a tortuous path before exiting through the exhaust port.
  • the horizontal-type venting system of this type are often also difficult to assemble and costly to manufacture.
  • U.S. Patent 4,486,516 shows a horizontal-type venting system having an electrolyte drainage aperture, an exhaust port, an antechamber, and a sump.
  • the venting system also includes a partition means that segregates the sump from the antechamber.
  • the antechamber has a canted floor sloping downwardly to the sump.
  • the sump is further defined by an inclined floor lying beneath the canted floor that slopes toward an aperture.
  • the partition means includes a number of intricate and interrelated walls that define the tortuous path that the gases must traverse before entering the exhaust port. Yet, the design of the horizontal -type venting system shown in that patent is costly to manufacture because so many interrelated and intricate parts are used.
  • a venting system for a lead-acid storage battery should maximize the use of the space above the battery case to vent the gases from within the cells. Also, the venting system should have the additional feature of promoting the efficient and quick return of electrolyte to the cells. Moreover, it continues to be desirable to design a venting system that is easy to manufacture and is cost effective. Thus, the ability to not only promote the venting of the gases from within the cells, but also to quickly return as much electrolyte as possible to the cells remains a challenge and a need in the art. Thus, it is an object of this invention to provide a venting system which maximizes the space available to vent gases from the cells.
  • a further object of this invention is to provide a venting system that is easy to assemble and manufacture, efficiently vents gases, and returns electrolyte to the cells of the battery.
  • the present invention relates to a venting system for a lead-acid storage battery.
  • the battery includes a battery case, a cover, and a lid.
  • the case includes a longitudinal axis, an open top, and a plurality of cells. Each of the cells contain the active elements of the battery, including electrolyte.
  • the cover is designed to be mounted onto the top portion of the case.
  • a plurality of condensation chambers are formed on the top surface of the cover.
  • Each of the condensation chambers include a housing for collecting gases vented from the cells of the battery.
  • the housing is defined by an open top, a pair of opposed side walls and opposed end walls joined at their respective corners, and a floor joined to the bottom end of the aforesaid walls.
  • the floor of each of the condensation chambers is horizontal and defines a channel along the longitudinal axis of the condensation chamber.
  • a sump depends downward from each of the condensation chambers. Each sump is in registry with a first opening in the floor of each of the condensation chambers.
  • the sump includes a lower portion, an aperture, and a floor.
  • the floor of the sump depends from the lower portion and slopes generally downward toward the bottom end of the aperture.
  • the floor of the sump is disposed at an angle to the horizontal.
  • a lid is provided to cover each of the condensation chambers.
  • the lid includes an inner surface defined by four walls joined at their respective corners.
  • a plurality of divider walls extend vertically from the inner surface of the lid intermediate the inner walls. Each of the divider walls are aligned perpendicular to the longitudinal axis. The divider walls are equally spaced from one another consistent with the relative width of the housing of each of the condensation chambers.
  • the divider walls partition the inner surface into a plurality of cells. The cells form and further define a top portion of each of the condensation chambers.
  • a plurality of exhaust openings extend from the inner surface of the lid. The exhaust openings are positioned to vent to the ambient the gases that flow into the condensation chambers. Each of the exhaust openings are associated with at least one of the condensation chambers.
  • the exhaust openings include a cylindrical chamber, a transfer passage, and a port.
  • the cylindrical chamber has a first opening that serves as an inlet for the gases that flow into the condensation chambers.
  • the cylindrical chamber includes a second opening that is joined to the inlet of the transfer passage.
  • the outlet of the transfer passage is connected to the port which is disposed within one of the outer walls of the lid.
  • a plurality of baffles also extend from the inner surface of the lid to the condensation chambers.
  • Each of the baffles control the flow of and promote the condensation of electrolyte.
  • the baffles are aligned along a line perpendicular to the longitudinal axis and extend into the housing of each of the condensation chambers. In the preferred embodiment, at least one baffle is associated with each condensation chamber.
  • Figure 1 is a perspective view of a battery containing a venting system as contemplated by the present invention, including a cover and a lid.
  • Figure 2 is an exploded perspective view of the cover and the lid of the battery shown in Figure 1, including a plurality of condensation chambers.
  • Figure 3 is a section view of a condensation chamber as seen along line 3-3 of Figure 1.
  • Figure 4 is a section view of the condensation chambers as seen along line 4-4 of Figure 1.
  • Figure 5 is an enlarged perspective view of a portion of the lid as shown in Figure 2.
  • Figure 6 is a section view of a condensation chamber as seen along line 6-6 of Figure 1.
  • FIG. 1 there is shown a perspective view of a fully assembled battery designated by the numeral 10.
  • the battery 10 includes a battery case 12, a cover 14, and a lid 16.
  • the venting system of the present invention is contained within the battery 10 intermediate the cover 14 and the lid 16.
  • the case 12 is rectangular with an open top and four upstanding walls 18 to 24 attached at each respective corner to form a box.
  • the case 12 has a longitudinal axis parallel to and intermediate walls 18 and 20.
  • Walls 18 to 24 further define a housing for containing the active elements of the battery 10, including electrolyte.
  • a plurality cells (not shown) are provided within the housing. Each of the cells are arranged side-by-side along and perpendicular to the longitudinal axis and share at least one common wall. Each of the cells produce a potential of two volts.
  • the case 12, as well as the other elements of the battery 10 described herein, may be manufactured from injection molded thermoplastic material. Other processes and techniques known in the art may be used to manufacture the components of the battery 10. However, the process of manufacturing the components of the battery 10 as discussed herein forms no significant part of the present invention; thus, further discussion is unnecessary.
  • the cover 14 is mounted to the top portion of the case 12 to enclose the cells within the housing.
  • the cover 14 is rectangular, having approximately the same length and width defined by walls 18 to 24 of the case 12.
  • the cover 14 includes a top surface 26 and four walls 28 to 34 attached at their respective corners. When attached, walls 28 to 34 wrap around and support the periphery of the cover 14, each wall extending downward from the top surface 26 to engage the upper ends of one of the walls 18 to 24.
  • the cover 14 may be heat sealed to the case 12 using techniques generally known in the art.
  • a pair of battery terminals are provided near the corners of the top surface 26.
  • a positive terminal 36 is located near the corner of walls 28 and 32.
  • a negative terminal 38 is located near the corner of walls 28 and 34 along a side of the top surface 26 directly opposite to the position of the positive terminal 36.
  • a control box 40 located on the top surface 26 is a control box 40.
  • the box 40 includes a lid 41 and four walls 42 to 48 joined at their respective corners to define its rectangular configuration.
  • the box 40 is located near wall 28 intermediate the positive terminal 36 and the negative terminal 38.
  • the box 40 serves as a container for an electrical control device that regulates the distribution of the voltage generated in the cells of the battery 10.
  • the box 40 is optional and forms no significant part of the present invention.
  • a support base 50 is provided on the top surface 26, and has a side edge in close proximity with wall 30 of the cover 14. The rear end of the base 50 is positioned adjacent wall 44 of the box 40.
  • the base 50 has a generally L-shaped rectangular configuration formed by upstanding walls 52 to 58.
  • the base 50 includes an interior space (not shown) generally defined by walls 52 to 58. To further define its length, walls 56 and 58, respectively, are located slightly inward of walls 32 and 34 of the top surface 26.
  • the base 50 includes a flange 70 that extends laterally between walls 56 and 58. The flange 70 serves to guide the relative position of the lid 16 when the battery 10 is assembled.
  • FIG 2 there is shown an exploded perspective view of the lid 16 and the cover 14 illustrated in Figure 1.
  • a plurality of condensation chambers 60 are formed on a portion of the top surface 26 of the cover 14, aligned with and over the cells of the battery 10.
  • the condensation chambers 60 extend across the top surface 26 having outer ends that are slightly inward of walls 32 and 34 of the cover 14.
  • the condensation chambers 60 are provided within the interior space of the base 50 such that walls 52 to 58 of the base 50 wrap around and serve to provide additional support to the periphery of the condensation chambers 60.
  • Each of the condensation chambers 60 are arranged side-by-side along a line perpendicular to the longitudinal axis of the battery 10 such that each condensation chamber shares at least one common wall.
  • Each of the condensation chambers 60 are defined by a pair of opposed side walls 64 to 66 and opposed end walls 68 to 70 that are attached at their respective ends to form a continuous elongated rectangular housing 62.
  • the housing 62 serves as an area for receiving the gases vented from the cells.
  • the housing 62 includes an open top and a floor 72 which depends from the bottom portion of walls 64 to 70.
  • the gases generated in each cell may flow directly upward into one or more of the condensation chambers 60.
  • the one-to-one relationship between and among the cells and the condensation chambers 60 is representative of the preferred embodiment.
  • lid 16 is provided to permanently enclose and seal each of the condensation chambers 60.
  • the lid 16 includes an outer surface 74 and an inner surface 76.
  • the rectangular configuration of the outer surface 74 is formed by walls 78 to 84 which surround its four outer edges.
  • walls 78 to 84 are aligned to overlie the top porton of walls 52 to 58 of the base 50.
  • the lid 16 includes an inner surface 76 having approximately the same rectangular length and width as the condensation chambers 60.
  • the inner surface 76 is defined by inner walls 86 to 92 which are positioned slightly inward of outer walls 78 to 84, thus leaving a small space therebetween.
  • walls 86 to 92 may be heat sealed atop walls 64a to 70a of the collective condensation chambers 60 to permanently enclose the each of the separate condensation chambers 60 within the base 50.
  • a plurality of divider walls 94 extend from the inner surface 76 toward the condensation chambers 60 generally between walls 86 to 92.
  • the divider walls 94 are aligned perpendicular to the longitudinal axis of the battery 10.
  • Each of the divider walls 94 are equally spaced from each other to correspond with the spacing between side walls 64 and 66 of the condensation chambers 60.
  • the spacing between each of the divider walls 94 serves to partition the inner surface 76 into a plurality of cells 96.
  • each of the cells 96 will serve as a top portion for and further define each of the condensation chambers 60.
  • Exhaust openings or assemblies 98 are provided within the lid 16 to serve as a means for ventilating to the ambient the gases collected in the condensation chambers 60.
  • the exhaust openings 98 are formed at opposite ends of the lid 16 along a common axis essentially facing away from one another.
  • the exhaust openings 98 extend downward from the inner surface 76 and have a depth substantially the same as the divider walls 94.
  • Each of the exhaust openings 98 include a port 100, a transfer passage 102, and a cylindrical chamber 104.
  • the cylindrical chamber 104 is positioned intermediate two adjacent cells 96, essentially divided in half by divider wall 94.
  • a porous material 106 may be disposed within the cylindrical chamber 104 to extinguish and prevent any external flame from igniting the gases within the condensation chambers 60.
  • the cylindrical chamber 104 has an opening (not shown) connected to the inlet of the transfer passage 102.
  • the outlet of the transfer passage 102 is connected to port 100.
  • Port 100 is provided within walls 82 and 84 of the lid 16 and serves as an opening for the gases to exit to the atmosphere.
  • a recess 107 is formed within one of the side walls 64 or 66 of the condensation chambers 60 to provide an opening below the cylindrical chamber 104. As a result, the gas collected in the condensation chambers 60 may rise upward to enter the exhaust openings 98.
  • FIG. 1 A rectangular opening or recess 124 is provided in each of the divider walls 94 adjacent to wall 88.
  • the opening 124 rises upward toward the inner surface 76 and extends laterally along a portion of the length of the divider wall 94.
  • the openings 124 are arranged along a common axis that is parallel to the longitudinal axis of the case 12.
  • the openings 124 provide a means in which the gases collected in the condensation chambers 60 may flow between and among each other before entering the exhaust openings 98.
  • the opening 124 within the central divider wall 97 is eliminated.
  • the condensation chambers 60 are divided into two separate groups, each group being associated with only one exhaust opening 98.
  • the gases that flow into the condensation chambers 60 will flow generally outward from the central wall 97 toward each of the exhaust openings 98.
  • a plurality of baffles 102 depend downward from the inner surface 76 into the condensation chambers 60.
  • the baffles 102 are disposed within each of the cells 96 of the lid 16 and are aligned perpendicular to the divider walls 94.
  • Each of the baffles 102 are rectangular and include a planar surface that is disposed in a plane parallel to the longitudinal axis.
  • the baffles 102 control the flow of the gases in the condensation chamber 60 and promote the condensation of vaporized electrolyte.
  • the length of each of the baffles 102 should be less than the width of the condensation chambers 60 so that when the lid 16 is assembled, each of the baffles 102 will fit comfortably within the housing 62.
  • each of the baffles 102 should have an appropriate depth so that its bottom end does not touch the floor 72 of the condensation chamber 60.
  • the baffles 102 are positioned to prevent electrolyte from reaching exhaust openings 98. As illustrated in Figure 2, at least one baffle 102 is provided within each of the cells 96 of the lid 16. The baffles 102 are arranged in two parallel rows, each being appropriately spaced from one another to divide the cells 96 into separate compartments. Other arrangements and designs of the baffles 102 may be chosen consistent with the present invention.
  • FIG. 3 there is shown a section view of one of the outer condensation chambers 60 with the lid 16 assembled.
  • walls 86 and 88 of the lid 16 are appropriately secured atop of walls 68a and 70a of the condensation chamber 60.
  • divider wall 94 is secured atop one of the common side walls 64 or 66 of the condensation chamber 60 to complete the enclosure.
  • outer walls 78 and 80 overlie walls 52 and 54 of the base 50 and the exhaust assembly 98 is seated within recess 107.
  • baffle 102 Located next to the exhaust opening 98 is baffle 102 which extends to a position above floor 72.
  • the floor 72 is disposed in a plane horizontal to the top surface 26 of the cover 14.
  • the floor 72 is further defined by a first opening 104 that is located toward one of the end walls of the condensation chamber 60.
  • a sump 108 depends downward from each of the condensation chambers 60.
  • the sump 108 has an opening 109 that is in registry with the first opening 104.
  • Each of the sumps 108 have a generally cylindrical configuration and include a lower portion 110, an aperture 112, and a floor 114.
  • the aperture 112 is located at the bottom end of the lower portion 110.
  • the aperture 112 is provided to serve as a means of ventilating the gases from the cells into the condensation chambers 60 and also as a means to promote the return of electrolyte to the cells.
  • the floor 114 of the sump 108 depends from the bottom end of the lower portion 110 sloping downwardly toward the bottom portion of the aperture 112. As shown, the floor 114 is disposed at an angle to the horizontal to promote the return of the condensate into the cells. In the preferred embodiment, the floor 114 has an angle of inclination relative to the horizontal anywhere between 0° and 90°.
  • a battery acid fill tube 116 is disposed within a second opening 105 in the floor 72 of each of the condensation chambers 60.
  • Tube 116 has a cylindrical configuration and is positioned on the floor 72 of the condensation chamber 60 at an end opposite to that of the position of the sump 108.
  • the tubes 116 are generally arranged along a line parallel to the longitudinal axis.
  • the internal structure of the tube 116 is best shown in Figure 3. As illustrated, the tube 116 extends both above and below the floor 72 such that its bottom end opens to the cells of the battery 10.
  • the top end of the tube 116 has an opening located along the same central axis as the opening of the bottom end.
  • a ridge 117 extends around the circumference of the tube 16 having a diameter greater than the diameter of either the top or bottom opening.
  • a plurality of battery acid fill tube plugs 120 extend below the inner surface 76 of the lid 16.
  • the plugs 120 are disposed within a plurality of holes (not shown) in the lid 16, each hole being surrounded by a cylindrical wall 125 that also projects downward from the inner surface 76 of the lid 16.
  • the cylindrical wall 125 has the same diameter as the ridge 117 of the tube 116.
  • Each of the plugs 120 are pushed into their corresponding holes so that their top surface 122 will be substantially flush with the outer surface 74 of the lid 16 (see also Figure 1).
  • a tubular structure 123 projects downwardly from the top surface 122 of the plug 120 having a diameter slightly greater than the diameter of the hole in the lid 16.
  • a recess is provided around the tubular structure 123 matching the diameter of the hole. After the plug 120 is pushed into the hole, the lower end of the tubular structure 123 will be disposed within the cylindrical wall 125 and positioned slightly above the top opening of the tube 116.
  • the plug 120 serves to prevent any gases or electrolyte from escaping after the battery 10 has been fully assembled.
  • the plugs 120 will reflux any electrolyte that may be entrapped by the gases. Accordingly, the tube 116 and plug 120 provide an additional means to return electrolyte to the cells of the battery 10.
  • FIG 4 there is shown a section view of a group of condensation chambers 60. The side-by-side alignment of the condensation chambers 60 is also shown. As explained previously, in the preferred embodiment, the condensation chambers 60 are positioned directly above the cells of the battery 10 so that each condensation chamber 60 is associated with a single cell of the battery 10.
  • each of the condensation chambers 60 is further defined by a channel 130 that extends substantially the length of each condensation chamber 60.
  • the floor 72 and channel 130 form a substantially V-shaped cross-section with the open end of the V facing upward and the apex of the V lying in a plane parallel to the horizontal.
  • the channel 130 directs the flow of condensate into the sump 108 through the first opening 104.
  • Figure 4 further illustrates the flow of the gases into the exhaust openings 98.
  • the gases collected in the condensation chambers 60 rise into the bottom end of the cylindrical chamber 104.
  • the gases will enter the porous element 106 and then flow through the transfer passage 102 before exiting to the ambient through the port 100. This process is repeated as the battery 10 continues to produce gases.
  • Figure 5 is helpful in illustrating the relative projection of the transfer passage 102 through the inner wall 90 and outer wall 82 of the lid 16 to connect to the port 100.
  • FIG 6 there is shown one of the interior condensation chambers 78.
  • a pair of baffles 102 extend into the condensation chamber 60.
  • each baffle 102 controls the flow of the gases and promotes the condensation of vaporized electrolyte.
  • the baffles 102 are located intermediate walls 86 and 88 of the condensation chamber 60.
  • the pair of baffles 102 partition the housing 62 into three compartments.
  • Figure 6 further illustrates the relative position of opening 124 in the divider wall 94.
  • FIG. 2-5 there is shown a preferred embodiment of the venting system for the battery 10.
  • a plurality of ducts 132 are provided intermediate the cover 14 and the lid 16.
  • the ducts 132 are defined by a pair of channels which form a means or a path for the gases to ventilate from the cells and flow into the condensation chambers 60.
  • the first channel 134 includes a wall 135 that is located adjacent one of the end walls of the condensation chamber 60.
  • the first channel 134 has an opening at each end wherein the bottom end opens into the cells of the battery 10.
  • the second channel 136 is provided in the lid 16 in spaced relation to the first channel 134.
  • the second channel 136 has an opening at its bottom end that is in registry with the opening at the top end of the first channel 134.
  • the second channel 136 is further defined by a wall 138 that is located inward and away from inner wall 86 to form a space for receiving gases vented from the cells.
  • a recess 140 is provided in wall 138 so that the gases that rise upward from the cells through the first channel 134 may flow into the condensation chambers 60 (see Figure 4).
  • the ducts 132 described above are optional and other means for further ventilating gases into the condensation chambers 60 may be used.
  • the novel venting system described above provides significant advantages not contained in the prior art.
  • the condensation chambers 60 provide a volume of space to ventilate in a controlled manner the gases generated in the cells of the battery 10. In keeping with the invention, the number, height, and spacing between each of the condensation chambers 60 may vary with the particular design needed for the battery. Thus, the present invention provides flexibility with regard to the location and position of the condensation chambers 60 formed on the top surface 26. As an alternative embodiment, the condensation chambers 60 may be located below the top surface 26 thereby reducing the overall height of the battery 10.
  • the improvement of the present invention over other venting systems relates in part to the form of the floor 72 and the position of the sump 108. It continues to be desirable to return electrolyte to the cells of the battery.
  • the channel 130 provides a coliable path for the condensate to follow so that it may drain directly into the sump 108.
  • the angle of the floor 114 of the sump 108 further promotes the return of electrolyte to the cells.
  • the present invention described herein fills the need to maximize the venting of gases from within the cells of the battery 10. Further, the present invention fills the need for a simple, cost effective, and efficient venting system for a lead-acid storage battery.
  • the present invention utilizes fewer parts than the venting systems discussed previously.
  • the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof and, accordingly, reference should be made to the appended claims, rather than to the foregoing specification, as indicating the scope of the invention.

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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)

Abstract

L'invention concerne un dispositif de dégazage pour une batterie composée d'une pluralité d'éléments. Ce dispositif comprend un couvercle de batterie, une pluralité de chambres de condensation et une plaque de fermeture. Les chambres de condensation sont formées sur au moins une partie de la surface supérieure du couvercle. Chaque chambre de condensation comporte un fond et un compartiment qui reçoit les gaz en provenance des éléments de batterie, un bac de vidange s'étendant vers le bas dans le fond de chaque chambre de condensation. Le bac de vidange comprend une ouverture et un fond incliné par rapport à l'horizontale. L'ouverture sert à la fois à l'évacuation des gaz provenant de l'intérieur des éléments et au retour des électrolytes dans les éléments. L'angle du fond favorise le retour du condensat qui s'écoule dans le bac. La plaque de fermeture sert à couvrir chaque chambre de condensation. Plusieurs déflecteurs montés à l'intérieur de la plaque de fermeture s'avancent dans chaque chambre de condensation.
PCT/NZ1999/000032 1999-03-22 1999-03-22 Dispositif de degazage pour batterie WO2000057502A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB0028442A GB2353630A (en) 1999-03-22 1999-03-22 A venting system for a battery
JP2000607291A JP2002540567A (ja) 1999-03-22 1999-03-22 バッテリ用換気システム
AU31764/99A AU3176499A (en) 1999-03-22 1999-03-22 A venting system for a battery
PCT/NZ1999/000032 WO2000057502A1 (fr) 1999-03-22 1999-03-22 Dispositif de degazage pour batterie
CN99807789A CN1306679A (zh) 1999-03-22 1999-03-22 蓄电池的排气系统

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/NZ1999/000032 WO2000057502A1 (fr) 1999-03-22 1999-03-22 Dispositif de degazage pour batterie

Publications (1)

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WO2000057502A1 true WO2000057502A1 (fr) 2000-09-28

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PCT/NZ1999/000032 WO2000057502A1 (fr) 1999-03-22 1999-03-22 Dispositif de degazage pour batterie

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JP (1) JP2002540567A (fr)
CN (1) CN1306679A (fr)
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EP1589596A2 (fr) * 2004-04-21 2005-10-26 Biasin SRL Couvercle pour un bac d'accumulateur
DE102013203036A1 (de) 2013-02-25 2014-08-28 Robert Bosch Gmbh Batteriezelle mit galvanischem Element sowie Batterie und Kraftfahrzeug mit der Batteriezelle
ITVI20130298A1 (it) * 2013-12-17 2015-06-18 Biasin S R L Coperchio per accumulatore elettrico con camera di sfiato del gas
US10056650B2 (en) 2015-09-01 2018-08-21 Gs Yuasa International Ltd. Lead-acid battery
US10193113B2 (en) 2013-07-25 2019-01-29 Johnson Controls Techology Company Vent adapter for lead-acid battery systems
US10319969B2 (en) 2015-03-30 2019-06-11 Gs Yuasa International Ltd. Lead-acid battery and method of manufacturing lid member of lead-acid battery
USD886060S1 (en) 2018-01-19 2020-06-02 Cps Technology Holdings, Llc Battery vent adapter

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JP4715090B2 (ja) * 2003-11-28 2011-07-06 株式会社Ｇｓユアサ 鉛蓄電池
JP4715091B2 (ja) * 2003-11-28 2011-07-06 株式会社Ｇｓユアサ 鉛蓄電池
JP4698153B2 (ja) * 2004-02-13 2011-06-08 古河電池株式会社 蓄電池排気構造
KR100818057B1 (ko) * 2006-11-01 2008-03-31 이강복 자동차용 배터리 케이스를 제조하기 위한 금형, 이를이용한 제조 방법 및 이에 의해 제조되는 자동차용 배터리케이스
JP5148862B2 (ja) * 2006-11-02 2013-02-20 古河電池株式会社 蓄電池の排気構造
JP4516098B2 (ja) * 2007-07-10 2010-08-04 古河電池株式会社 蓄電池
JP2009129720A (ja) * 2007-11-23 2009-06-11 Furukawa Battery Co Ltd:The 蓄電池用排気ノズル成形法
KR101811271B1 (ko) 2011-11-16 2017-12-22 에스케이이노베이션 주식회사 배터리팩
CN105591159A (zh) * 2014-11-10 2016-05-18 江苏永昌新能源科技有限公司 一种锂电池
CN105529414B (zh) * 2016-01-06 2018-11-13 浙江汇同电源有限公司 一种蓄电池
CN105529415B (zh) * 2016-01-06 2018-11-13 浙江汇同电源有限公司 一种蓄电池
JP2020013795A (ja) * 2019-09-02 2020-01-23 株式会社Ｇｓユアサ 鉛蓄電池に使用される中蓋の製造方法
PL4016708T3 (pl) 2020-10-19 2023-02-20 Jiangsu Contemporary Amperex Technology Limited Akumulator, urządzenie elektryczne i sposób oraz urządzenie do przygotowywania akumulatora
HUE063718T2 (hu) 2020-10-19 2024-01-28 Jiangsu Contemporary Amperex Tech Ltd Telep, energiafelhasználó készülék, továbbá eljárás és készülék telep gyártásához
CN112018321B (zh) * 2020-10-19 2021-04-06 江苏时代新能源科技有限公司 电池、用电装置、制备电池的方法和设备
WO2022082397A1 (fr) 2020-10-19 2022-04-28 江苏时代新能源科技有限公司 Batterie, appareil électrique, et procédé et dispositif de préparation de batterie
CN117276798A (zh) * 2021-03-15 2023-12-22 宁德时代新能源科技股份有限公司 电池、用电装置、制备电池的方法和装置

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1589596A2 (fr) * 2004-04-21 2005-10-26 Biasin SRL Couvercle pour un bac d'accumulateur
EP1589596A3 (fr) * 2004-04-21 2006-05-31 Biasin SRL Couvercle pour un bac d'accumulateur
DE102013203036A1 (de) 2013-02-25 2014-08-28 Robert Bosch Gmbh Batteriezelle mit galvanischem Element sowie Batterie und Kraftfahrzeug mit der Batteriezelle
US10193113B2 (en) 2013-07-25 2019-01-29 Johnson Controls Techology Company Vent adapter for lead-acid battery systems
US11799165B2 (en) 2013-07-25 2023-10-24 Cps Technology Holdings Llc Vent adapter for lead-acid battery systems
ITVI20130298A1 (it) * 2013-12-17 2015-06-18 Biasin S R L Coperchio per accumulatore elettrico con camera di sfiato del gas
US10319969B2 (en) 2015-03-30 2019-06-11 Gs Yuasa International Ltd. Lead-acid battery and method of manufacturing lid member of lead-acid battery
US10056650B2 (en) 2015-09-01 2018-08-21 Gs Yuasa International Ltd. Lead-acid battery
USD886060S1 (en) 2018-01-19 2020-06-02 Cps Technology Holdings, Llc Battery vent adapter

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CN1306679A (zh) 2001-08-01
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GB2353630A (en) 2001-02-28
AU3176499A (en) 2000-10-09

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