CA2318554A1 - Vent cover for battery - Google Patents
Vent cover for battery Download PDFInfo
- Publication number
- CA2318554A1 CA2318554A1 CA002318554A CA2318554A CA2318554A1 CA 2318554 A1 CA2318554 A1 CA 2318554A1 CA 002318554 A CA002318554 A CA 002318554A CA 2318554 A CA2318554 A CA 2318554A CA 2318554 A1 CA2318554 A1 CA 2318554A1
- Authority
- CA
- Canada
- Prior art keywords
- vent
- battery
- well
- battery housing
- pipe
- Prior art date
- Legal status (The legal status 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 status listed.)
- Abandoned
Links
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
- H01M50/308—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
- 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
- H01M50/317—Re-sealable arrangements
- H01M50/325—Re-sealable arrangements comprising deformable valve members, e.g. elastic or flexible valve members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/04—Cells with aqueous electrolyte
- H01M6/06—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid
- H01M6/10—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid with wound or folded electrodes
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
A cover for venting gases from thin metal film battery cells having vents disposed at the center of one end of the cells. The vents comprise cylindrical wells (72) that recess into, and substantially fill, the top portions of battery cell cavities within a battery housing. The cavities are sized to hold the battery cells securely and are configured to provide an electrical serial connection. The wells include pipes (71) which extend outward from the bottom of the wells and lead from openings in the bases of the wells. The openings in the pipes are covered with flexible valve caps (77) and well lids (78) cover the wells. The center point arrangement of the recessed wells permit gases from the battery cells to escape through the openings, yet restrict the electrolyte from exiting the housing. The base of the battery housing does not have vent openings and is interchangeable with the cover so that the battery housing may be oriented with the terminals near the top or the bottom of the case.
Description
VENT COVER FOR BATTERY
BACKGROUND OF THE INVENTION
The present invention relates to electric storage batteries, and more particularly to an arrangement for venting gases from thin metal film battery cells.
Thin metal film (TMF) battery technology provides a compact high power battery cell. Cells of this type are well known and their construction and manufacture have been described in, for example, United States Patent Nos. 3,494,800; 5,045,086;
5,047,300;
5,198,313 and 5,368,961 the disclosures of which are hereby incorporated by reference.
A thin metal film battery cell includes thin metal film plates sealed within a valve-regulated, sealed cell container. The cells include absorptive glass-mat (AGM) separator technology in an electrolyte starved system. The thin metal film plates are made from very thin lead filin pasted on both surfaces with an active material. Plates having positive active material and plates having negative active material are spiral wound with separator material, and terminations are cast-on or soldered to the ends of the spiral roll. The roll is encapsulated in a container which is filled with electrolyte and then sealed.
When thin metal film batteries are charged, the excitation of the positive and negative active materials tends to heat the electrolytic fluid which causes some of the electrolytic fluid to change from a liquid to a gas. This gas accumulates and increases the pressure within the battery case. In extreme overcharging conditions, the accumulated gas can rupture the battery enclosure. Prior art inventions place openings in the battery enclosure to release the gas and prevent built-up pressure within the enclosure; however, the electrolyte may also exit through such openings. Thus, the present invention is directed to the venting of gases accumulated in a thin metal film battery housing while preventing electrolyte from exiting the housing.
SUMMARY OF THE INVENTION
In accordance with the invention, the apparatus includes a battery housing containing at least one cavity for holding a battery cell. The housing is enclosed by a cover having a vent opening at the base of a venting well that is substantially centered and recessed within one end of the cavity so as to substantially fill the top of the cavity.
The venting well also includes a pipe, or well aperture, at its center extending outwardly from the vent opening. A baffle is disposed at an inner end of the well aperture that partially interrupts direct flow through the vent opening.
Preferably, a flexible valve cap is mounted on the top of, and seals to, the well aperture. The valve cap is preferably made of a flexible rubber material that expands at a venting pressure to allow gases from within the cavities to escape and contracts when below the venting pressure to reseal to the well aperture. A well lid or cover closes the top of the well.
Such a vent arrangement is provided above each cell in a multiple cell battery.
The vent may be formed in a top that closes the body into which the cells are mounted.
Preferably, the top is interchangeable with a bottom that does not include the vents.
The foregoing and other obj ects and advantages of the invention will be found in the detailed description that follows. In the description, reference is made to the accompanying drawings which illustrate a preferred embodiment of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of the battery with a center point vent cover according to the present invention with one lid removed;
FIG. 2 is an exploded perspective view of the battery illustrated in Fig. l, showing one thin metal film battery cell and with no lids or caps;
Fig. 3 is a top plan view of the battery case illustrated in Fig. 1 with the top and bottom of the case removed for clarity, showing one thin metal film battery cell in each cavity;
Fig. 4 is a bottom plan view of the battery shown in Fig. 1 with the top and bottom of the case removed for clarity, showing one thin metal film battery cell in each cavity;
Fig. 5 is a cross-sectional view of the battery taken along the plane 5-5-5 shown in Fig. 1;
Fig. 6 is a cross-sectional view of the top of the battery case taken along the line 6-6 illustrated in Fig. 2;
Fig. 7 is a cross-sectional view of the bottom of the battery case taken along the line 7-7 shown in Fig. 2; and Fig. 8 is an enlarged view in cross section of one vent in the top of the battery case.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
As illustrated in Fig. 1 the battery 8 includes a case 10 having a body or housing 12 with a top 14 and a bottom 16 each coupled to the body in a manner known in the art such as by heat sealing. The case 10 is configured to accommodate a plurality of thin metal film cells 18 (Fig. 2) that include a thin metal film 20 coiled in a spiral in a manner generally known in the art (for illustration purposes, the spiral coil is shown in the figures as multiple concentric circles). The film 20 defines an outer cylindrical surface area . . .. .. .. .. .. ..
.. .. . .. . . .. . . ..
. . . . .. . s . . . . . .
. . . . . . . . . .. .
BACKGROUND OF THE INVENTION
The present invention relates to electric storage batteries, and more particularly to an arrangement for venting gases from thin metal film battery cells.
Thin metal film (TMF) battery technology provides a compact high power battery cell. Cells of this type are well known and their construction and manufacture have been described in, for example, United States Patent Nos. 3,494,800; 5,045,086;
5,047,300;
5,198,313 and 5,368,961 the disclosures of which are hereby incorporated by reference.
A thin metal film battery cell includes thin metal film plates sealed within a valve-regulated, sealed cell container. The cells include absorptive glass-mat (AGM) separator technology in an electrolyte starved system. The thin metal film plates are made from very thin lead filin pasted on both surfaces with an active material. Plates having positive active material and plates having negative active material are spiral wound with separator material, and terminations are cast-on or soldered to the ends of the spiral roll. The roll is encapsulated in a container which is filled with electrolyte and then sealed.
When thin metal film batteries are charged, the excitation of the positive and negative active materials tends to heat the electrolytic fluid which causes some of the electrolytic fluid to change from a liquid to a gas. This gas accumulates and increases the pressure within the battery case. In extreme overcharging conditions, the accumulated gas can rupture the battery enclosure. Prior art inventions place openings in the battery enclosure to release the gas and prevent built-up pressure within the enclosure; however, the electrolyte may also exit through such openings. Thus, the present invention is directed to the venting of gases accumulated in a thin metal film battery housing while preventing electrolyte from exiting the housing.
SUMMARY OF THE INVENTION
In accordance with the invention, the apparatus includes a battery housing containing at least one cavity for holding a battery cell. The housing is enclosed by a cover having a vent opening at the base of a venting well that is substantially centered and recessed within one end of the cavity so as to substantially fill the top of the cavity.
The venting well also includes a pipe, or well aperture, at its center extending outwardly from the vent opening. A baffle is disposed at an inner end of the well aperture that partially interrupts direct flow through the vent opening.
Preferably, a flexible valve cap is mounted on the top of, and seals to, the well aperture. The valve cap is preferably made of a flexible rubber material that expands at a venting pressure to allow gases from within the cavities to escape and contracts when below the venting pressure to reseal to the well aperture. A well lid or cover closes the top of the well.
Such a vent arrangement is provided above each cell in a multiple cell battery.
The vent may be formed in a top that closes the body into which the cells are mounted.
Preferably, the top is interchangeable with a bottom that does not include the vents.
The foregoing and other obj ects and advantages of the invention will be found in the detailed description that follows. In the description, reference is made to the accompanying drawings which illustrate a preferred embodiment of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of the battery with a center point vent cover according to the present invention with one lid removed;
FIG. 2 is an exploded perspective view of the battery illustrated in Fig. l, showing one thin metal film battery cell and with no lids or caps;
Fig. 3 is a top plan view of the battery case illustrated in Fig. 1 with the top and bottom of the case removed for clarity, showing one thin metal film battery cell in each cavity;
Fig. 4 is a bottom plan view of the battery shown in Fig. 1 with the top and bottom of the case removed for clarity, showing one thin metal film battery cell in each cavity;
Fig. 5 is a cross-sectional view of the battery taken along the plane 5-5-5 shown in Fig. 1;
Fig. 6 is a cross-sectional view of the top of the battery case taken along the line 6-6 illustrated in Fig. 2;
Fig. 7 is a cross-sectional view of the bottom of the battery case taken along the line 7-7 shown in Fig. 2; and Fig. 8 is an enlarged view in cross section of one vent in the top of the battery case.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
As illustrated in Fig. 1 the battery 8 includes a case 10 having a body or housing 12 with a top 14 and a bottom 16 each coupled to the body in a manner known in the art such as by heat sealing. The case 10 is configured to accommodate a plurality of thin metal film cells 18 (Fig. 2) that include a thin metal film 20 coiled in a spiral in a manner generally known in the art (for illustration purposes, the spiral coil is shown in the figures as multiple concentric circles). The film 20 defines an outer cylindrical surface area . . .. .. .. .. .. ..
.. .. . .. . . .. . . ..
. . . . .. . s . . . . . .
. . . . . . . . . .. .
3 - . . .... .. .. .... .. ..
generally indicated by reference numeral 21, a first end 22, and second end 24. First 26 and second 28 conducting leads are coupled to the respective first 22 and second 24 ends of the S coiled thin metal film 20 such as by welding or an equivalent technique Ia~own in the art. As ~thia metal film battery cells are generally Imown in the art, recognized techniques for manufacturing such cells and the manner in which they generate electricity will not be described herein: For a general description of such cells, reference may be had to Wfl 98/56053A1, ~titl~ 'Modular Electric Storage Battery", and assigned to~the assignee of the present invention, the disclosure of which is incorporated herein by reference.
With reference to Figs. 2 and 3, body 12 includes exterior side walls 30.and 32 cad exterior end rolls 34 and 36 as well as a plurality of partition walls generally indicated by reference numeral 38. Partition walls 3$ interconnect exterior side walls 30 and 32 and exterior end walls 34 and 36 in a modified honeycomb configuration that includes a plurality of generally octagonal shaped cell cavities 40.
In the illustrated embodiment, exterior walls 30, 32, 34, and 36, as well as each of the plurality of partition walls 38, have the same wall thickness 41 (Fig. 3) thereby simplifying the manufacture of case 10. Partition walls 38 include a plurality of first planar segments 46 and second planar segments 48 oriented orthogonal to first planar segments 46.
Second planar segments 48 are further orthogonal to first 30 and second 32 exterior side walls and parallel to first 34 and second 36 exterior end walls. In a similar manner, each of first planar segments 46 are orthogonal to first 34 and second 36 exterior end walls and parallel to first 30 and second 32 exterior side walls. A plurality of arcuate co~ector segments 50 interconnect first 46 and second 48 planar segments as well as couple the planar segments 46 and 48 to the respective exterior side 30 and 32 and end 34 and 36 walls. Each of the arcuate connector segments 50 are integral with one or three other arcuate connector segments 50 to define a plurality of roughly diamond shaped passages 52 or half diamond shaped passages 53, cacti with rounded corners as shown.
The planar segments 46 and 48, the exterior side and end walls, and the arcuate connector segments 50 cooperate to define the octagonal cell cavities 40 for accommodating cells 18. As best illustrated in Fig. 3, cells 18a-18f are each disposed in a cavity 40 (Fig. 2) of body 12. The arcuate configuration of segments 50 is predetemsined to securely retain the cells 18 within each cavity 40. More particularly, in the preferred embodiment; the overall size of each cavity 40 as well as the shape of areuate segments SO arc predetermined so that during the insertion of each cell 18 within each cavity 40, the arcuate segments 50 matingly engage the cell 18 along in excess of fifty percent X50%) of the exterior surface area 21'of film 20. The uniform thiclmess of AM~N~D~L~ ~~IEE~
~ .. .. .. .. .. .~
~. ~~ ~ . . ~ ~ ~
~ ~ ~ ~ ~1 ~ ~ ~ ~ ~ ~
. ~ ~ ~ ~ ~ ~ . .
generally indicated by reference numeral 21, a first end 22, and second end 24. First 26 and second 28 conducting leads are coupled to the respective first 22 and second 24 ends of the S coiled thin metal film 20 such as by welding or an equivalent technique Ia~own in the art. As ~thia metal film battery cells are generally Imown in the art, recognized techniques for manufacturing such cells and the manner in which they generate electricity will not be described herein: For a general description of such cells, reference may be had to Wfl 98/56053A1, ~titl~ 'Modular Electric Storage Battery", and assigned to~the assignee of the present invention, the disclosure of which is incorporated herein by reference.
With reference to Figs. 2 and 3, body 12 includes exterior side walls 30.and 32 cad exterior end rolls 34 and 36 as well as a plurality of partition walls generally indicated by reference numeral 38. Partition walls 3$ interconnect exterior side walls 30 and 32 and exterior end walls 34 and 36 in a modified honeycomb configuration that includes a plurality of generally octagonal shaped cell cavities 40.
In the illustrated embodiment, exterior walls 30, 32, 34, and 36, as well as each of the plurality of partition walls 38, have the same wall thickness 41 (Fig. 3) thereby simplifying the manufacture of case 10. Partition walls 38 include a plurality of first planar segments 46 and second planar segments 48 oriented orthogonal to first planar segments 46.
Second planar segments 48 are further orthogonal to first 30 and second 32 exterior side walls and parallel to first 34 and second 36 exterior end walls. In a similar manner, each of first planar segments 46 are orthogonal to first 34 and second 36 exterior end walls and parallel to first 30 and second 32 exterior side walls. A plurality of arcuate co~ector segments 50 interconnect first 46 and second 48 planar segments as well as couple the planar segments 46 and 48 to the respective exterior side 30 and 32 and end 34 and 36 walls. Each of the arcuate connector segments 50 are integral with one or three other arcuate connector segments 50 to define a plurality of roughly diamond shaped passages 52 or half diamond shaped passages 53, cacti with rounded corners as shown.
The planar segments 46 and 48, the exterior side and end walls, and the arcuate connector segments 50 cooperate to define the octagonal cell cavities 40 for accommodating cells 18. As best illustrated in Fig. 3, cells 18a-18f are each disposed in a cavity 40 (Fig. 2) of body 12. The arcuate configuration of segments 50 is predetemsined to securely retain the cells 18 within each cavity 40. More particularly, in the preferred embodiment; the overall size of each cavity 40 as well as the shape of areuate segments SO arc predetermined so that during the insertion of each cell 18 within each cavity 40, the arcuate segments 50 matingly engage the cell 18 along in excess of fifty percent X50%) of the exterior surface area 21'of film 20. The uniform thiclmess of AM~N~D~L~ ~~IEE~
~ .. .. .. .. .. .~
~. ~~ ~ . . ~ ~ ~
~ ~ ~ ~ ~1 ~ ~ ~ ~ ~ ~
. ~ ~ ~ ~ ~ ~ . .
4 - ~ . .... .. .. .... .. ..
the exterior cast walls 30, 32, 34, and 36 and each partition wall 38 naiformly compresses fhe cell during insertion such as by compressing the glass fiber separators normally included therewithin. Accordingly, the cells 18 are securely nested and retained within the cavities 40.
Finally, as illustrated in Fig. 5, top 14 and stops 62, described in detail below, Iongitudiaally retain the cells 18 within the cavities 40 as shown.
As illustrated, the exterior side walls 30 and 32 , exterior end walls 34 and 36, and partition walls 38 of body 12 are integral with one another. It is preferred that the walls 30, 32, 34, 36 and 38 are formed of a thermally resistant plastic material such as polypropylene through processes known in the art such as stamping, casting, or injection molding.
In order to further defne generally octagonal cell cavities 40, exterior side walls 30 and 32 are connected to exterior end walls 34 and 36 via truncated planar corner segments 54.
As best illustrated in Fig. Z, the exterior walls 30, 32, 34, and 36 ofbody I2 are of a uniform length 56 defining an upper end 58 and a lower end 60. Top I4 is coupled to the case I2 proximate to upper end 58 and bottom 16 is coupled proximate to lower end 60 thereof (Fig.
lj.
In addition to the robustness, retention features, and~maldability of the modified honeycomb configuration of the present invention, the flat surfaces provided by planar segments 46 and 48 facilitate the proper alignment of each cell 18 within its respective cavity 40 and provides a flat surface for complete electrical interconnection-of the culls 18 by welding as hereinafter described. More p~ticularly, as best ilhtsttated in Figs. 3 and 4, the upstanding tabs 27a-27f of the cells I8a-18f are disposed within the cavities 40 adjacent one of the planar surfaces 46 and 48. The welded interconnection between adjacent tabs 27 within the battery case IQ occurs through an orifice 7I formed in the planar segments 46 and 48 as hereinafter described and 8s illustrated in Fig. ~. Those skilled in the art will appreciate that a complete weld connection between adjacent tabs 27 is facilitated by the planar configuration of surfaces 46 and 48.
As shown in Figs. 4 and 5, body 12 further includes a plurality of semicircular stops 62 integral with and extending inwardly from arcuate connector segments 50 and truncated planar corner segments 54. Stops 62 are recessed from lower end 60 {Fig. 5) of these respective segments to properly position the cells 18 within the cell cavities 40 thereby facilitating the electrical interconnection of the cells 18 as hereinafter described.
The configuration of the top 14 will now be described with reference to Figs.
1, 5, 6, and $. The top 14 is preferably formed of the same plastic material as body 12 through stamping, casting, inj ection molding, or other method lmown in ~ti~e art. The top 14 includes an upper planar member 64:, a connecting flange 66 extending downwardly from the periphery of upper member 64, and a plurality of vents 68 (Fig. 6j disposable AMENDED SH~Er within the cell cavities 40 when the top 14 is connected to body 12 (Fig. 5).
Vents 68 allow dissipation of gases generated within case 10 during the charging and discharging cycles of the cells. The vents 68 include venting passages 70 defined by upstanding cylindrical pipes 71 that selectively provide access to the cell cavities 40 for placement of an electrolyte within each of the cell cavities 40.
The vents 68 are partially defined by a cylindrical well 72 interconnecting upper planar member 64 and a well bottom 73. The cylindrical wells 72 of adjacent vents 68 are separated from one another so as to define a recessed cavity 74 that accommodates the upstanding tab 27 on conducting leads 26 or 28 for electrically interconnecting the cells 18 as hereinafter described. Upper 81 and lower 83 sets of ribs are integral with and protrude from the top and bottom surface respectively of each well bottom 73.
The ribs of each set 81 and 83 are aligned perpendicularly and extend from the edges of the wells 72 to provide structural support for the vents 68. On separate, parallel planes, the upper ribs 81 bisect the angles formed by the lower ribs 83. The ribs 81 and 83 are interrupted near their midpoints by the open venting passage 70 of each vent 68. The ribs 81 and 83 and the recessed wells 72 increase the pressure handling capabilities of the case 10.
The bottom of each venting passage 70 is defined by a baffle 75. When adding electrolytic fluid to the battery 8, the baffle 75 disperses the fluid laterally through the venting passage 70 preventing the stream of fluid from damaging the battery cells 18.
A vent opening 76 extends from the well bottom 73 to above and laterally around the baffle 75. A rubber cap 77 is disposed on the top of the pipe 71 above the vent opening 76. The rubber cap 77, made of a polypropylene/polyethylene material such as EPDM, acts as a valve to maintain an air tight seal up to approximately 15 psi. The EPDM
material allows the rubber cap 77 to expand and vent the gases at approximately 20 psi, and then reseal. Each well 72 is enclosed by a lid member 78 sealed to the open top of each cylindrical well 72. The lids 78 have at least one laterally offset opening 78' for the escape of gas from the vent. To reduce the likelihood of a rupture in extreme overcharge conditions, the lids 78 are designed to release at approximately 50-60 psi to rapidly vent the gases. The baffle 75, caps 77 and lids 78 collectively work to prevent electrolytic fluid from exiting the battery 8 when vented or inverted.
As illustrated in Fig. 7, the bottom 16 is configured in a manner substantially similar to the top 14 and includes a lower planar member 79, a connecting flange 80, and upper members 82 recessed from the lower planar member 79 and connected thereto via tapered cylindrical connecting walls 84. Protruding some thickness from the bottom and top surface respectively of the each upper member 82 are upper 85 and lower 87 sets of ribs, each set perpendicularly intersecting at the center of the upper members 82, similar w0 99/36977 to ribs 81 and 83. The bottom 16 does not include the vent arrangement formed in the top 14.
The top 14 and the bottom 16 are connected to body 12 such as by heat sealing or other method known in the art. More particularly, connecting flanges 66 and 80 of top 14 and bottom 16, respectively, are configured to operatively engage exterior side 30 and 32 and end 34 and 36 walls, whereupon the top 14 and the bottom 16 are heat sealed to the body 12 at raised surfaces 89 circumscribing the vents 68 to provide a sealed case that is vented through vents 68 in the top 14.
The electrical interconnection of the cells 18 within the case 10 will now be described with reference to Figs. 3 and 4. As illustrated, adjacent TMF cells are oppositely oriented in a manner generally known in the art for serial connection. Thus, cell 18a is electrically connected to exterior terminal 86 by second conducting lead 28a (Fig. 3) and is electrically connected to cell 18b via the connection of the respective first conducting leads 26a and 26b. The serial electrical connection of the remaining cells 18b-18f is accomplished in a substantially similar manner and is illustrated in the drawings.
As illustrated in Fig. 5, planar segment 46 separating cells 18c and 18d is provided with an orifice 71 for electrically connecting upstanding tabs 27c and 27d in a manner generally known in the art such as welding. Those skilled in the art will appreciate that the electrical interconnection of each of the plurality of cells 18a-18f occurring through second planar segments 48 are made in a manner substantially the same as that illustrated in Fig. 5 for connection to first planar segment 46.
As shown in Fig. 3, the serial electrical connection of cells 18a-18f is completed by electrically connecting the second lead of cell 18f in a manner generally known in the art to terminal 88 which is coupled to the exterior of battery case 12 and, more particularly, to end wall 34.
As indicated above, the position of each cell 18a-18f within its respective cavity is dictated by the positioning of stops 62 as best illustrated in Figs. 3 and 5. More particularly, each of the cells 18a-18f is disposed within a respective cavity 40 until one of the first 26 and second 28 leads connected thereto engage the stops 62 projecting inwardly into the cavity 40. The stops 62 facilitate the proper positioning of the TMF
cells 18 relative to one another to allow precise electrical interconnection, as described above, with relative ease and simplicity.
As seen from the above description and the accompanying drawings, each vent 35 68 is centered over one of the cells 18 and is recessed down toward the level of the top of a cell 18. The result is that there is very little free space in which gas can accumulate without venting. The vent 68 accommodates the venting of gas but restricts the exit of electrolyte. Because the top 14 and bottom 16 contain identical structures for attachment to the body 12, the terminals 86 and 88 can be located at the top by simply reversing the top 14 and bottom 16 before heat sealing to the body 12.
Illustrative embodiments of the invention have been described in considerable detail for the purpose of disclosing practical, operative structures whereby the invention may be practiced advantageously. The designs described are intended to be illustrative only. The novel characteristics of the invention may be incorporated in other structural forms without departing from the scope of the invention as defined in the following claims.
the exterior cast walls 30, 32, 34, and 36 and each partition wall 38 naiformly compresses fhe cell during insertion such as by compressing the glass fiber separators normally included therewithin. Accordingly, the cells 18 are securely nested and retained within the cavities 40.
Finally, as illustrated in Fig. 5, top 14 and stops 62, described in detail below, Iongitudiaally retain the cells 18 within the cavities 40 as shown.
As illustrated, the exterior side walls 30 and 32 , exterior end walls 34 and 36, and partition walls 38 of body 12 are integral with one another. It is preferred that the walls 30, 32, 34, 36 and 38 are formed of a thermally resistant plastic material such as polypropylene through processes known in the art such as stamping, casting, or injection molding.
In order to further defne generally octagonal cell cavities 40, exterior side walls 30 and 32 are connected to exterior end walls 34 and 36 via truncated planar corner segments 54.
As best illustrated in Fig. Z, the exterior walls 30, 32, 34, and 36 ofbody I2 are of a uniform length 56 defining an upper end 58 and a lower end 60. Top I4 is coupled to the case I2 proximate to upper end 58 and bottom 16 is coupled proximate to lower end 60 thereof (Fig.
lj.
In addition to the robustness, retention features, and~maldability of the modified honeycomb configuration of the present invention, the flat surfaces provided by planar segments 46 and 48 facilitate the proper alignment of each cell 18 within its respective cavity 40 and provides a flat surface for complete electrical interconnection-of the culls 18 by welding as hereinafter described. More p~ticularly, as best ilhtsttated in Figs. 3 and 4, the upstanding tabs 27a-27f of the cells I8a-18f are disposed within the cavities 40 adjacent one of the planar surfaces 46 and 48. The welded interconnection between adjacent tabs 27 within the battery case IQ occurs through an orifice 7I formed in the planar segments 46 and 48 as hereinafter described and 8s illustrated in Fig. ~. Those skilled in the art will appreciate that a complete weld connection between adjacent tabs 27 is facilitated by the planar configuration of surfaces 46 and 48.
As shown in Figs. 4 and 5, body 12 further includes a plurality of semicircular stops 62 integral with and extending inwardly from arcuate connector segments 50 and truncated planar corner segments 54. Stops 62 are recessed from lower end 60 {Fig. 5) of these respective segments to properly position the cells 18 within the cell cavities 40 thereby facilitating the electrical interconnection of the cells 18 as hereinafter described.
The configuration of the top 14 will now be described with reference to Figs.
1, 5, 6, and $. The top 14 is preferably formed of the same plastic material as body 12 through stamping, casting, inj ection molding, or other method lmown in ~ti~e art. The top 14 includes an upper planar member 64:, a connecting flange 66 extending downwardly from the periphery of upper member 64, and a plurality of vents 68 (Fig. 6j disposable AMENDED SH~Er within the cell cavities 40 when the top 14 is connected to body 12 (Fig. 5).
Vents 68 allow dissipation of gases generated within case 10 during the charging and discharging cycles of the cells. The vents 68 include venting passages 70 defined by upstanding cylindrical pipes 71 that selectively provide access to the cell cavities 40 for placement of an electrolyte within each of the cell cavities 40.
The vents 68 are partially defined by a cylindrical well 72 interconnecting upper planar member 64 and a well bottom 73. The cylindrical wells 72 of adjacent vents 68 are separated from one another so as to define a recessed cavity 74 that accommodates the upstanding tab 27 on conducting leads 26 or 28 for electrically interconnecting the cells 18 as hereinafter described. Upper 81 and lower 83 sets of ribs are integral with and protrude from the top and bottom surface respectively of each well bottom 73.
The ribs of each set 81 and 83 are aligned perpendicularly and extend from the edges of the wells 72 to provide structural support for the vents 68. On separate, parallel planes, the upper ribs 81 bisect the angles formed by the lower ribs 83. The ribs 81 and 83 are interrupted near their midpoints by the open venting passage 70 of each vent 68. The ribs 81 and 83 and the recessed wells 72 increase the pressure handling capabilities of the case 10.
The bottom of each venting passage 70 is defined by a baffle 75. When adding electrolytic fluid to the battery 8, the baffle 75 disperses the fluid laterally through the venting passage 70 preventing the stream of fluid from damaging the battery cells 18.
A vent opening 76 extends from the well bottom 73 to above and laterally around the baffle 75. A rubber cap 77 is disposed on the top of the pipe 71 above the vent opening 76. The rubber cap 77, made of a polypropylene/polyethylene material such as EPDM, acts as a valve to maintain an air tight seal up to approximately 15 psi. The EPDM
material allows the rubber cap 77 to expand and vent the gases at approximately 20 psi, and then reseal. Each well 72 is enclosed by a lid member 78 sealed to the open top of each cylindrical well 72. The lids 78 have at least one laterally offset opening 78' for the escape of gas from the vent. To reduce the likelihood of a rupture in extreme overcharge conditions, the lids 78 are designed to release at approximately 50-60 psi to rapidly vent the gases. The baffle 75, caps 77 and lids 78 collectively work to prevent electrolytic fluid from exiting the battery 8 when vented or inverted.
As illustrated in Fig. 7, the bottom 16 is configured in a manner substantially similar to the top 14 and includes a lower planar member 79, a connecting flange 80, and upper members 82 recessed from the lower planar member 79 and connected thereto via tapered cylindrical connecting walls 84. Protruding some thickness from the bottom and top surface respectively of the each upper member 82 are upper 85 and lower 87 sets of ribs, each set perpendicularly intersecting at the center of the upper members 82, similar w0 99/36977 to ribs 81 and 83. The bottom 16 does not include the vent arrangement formed in the top 14.
The top 14 and the bottom 16 are connected to body 12 such as by heat sealing or other method known in the art. More particularly, connecting flanges 66 and 80 of top 14 and bottom 16, respectively, are configured to operatively engage exterior side 30 and 32 and end 34 and 36 walls, whereupon the top 14 and the bottom 16 are heat sealed to the body 12 at raised surfaces 89 circumscribing the vents 68 to provide a sealed case that is vented through vents 68 in the top 14.
The electrical interconnection of the cells 18 within the case 10 will now be described with reference to Figs. 3 and 4. As illustrated, adjacent TMF cells are oppositely oriented in a manner generally known in the art for serial connection. Thus, cell 18a is electrically connected to exterior terminal 86 by second conducting lead 28a (Fig. 3) and is electrically connected to cell 18b via the connection of the respective first conducting leads 26a and 26b. The serial electrical connection of the remaining cells 18b-18f is accomplished in a substantially similar manner and is illustrated in the drawings.
As illustrated in Fig. 5, planar segment 46 separating cells 18c and 18d is provided with an orifice 71 for electrically connecting upstanding tabs 27c and 27d in a manner generally known in the art such as welding. Those skilled in the art will appreciate that the electrical interconnection of each of the plurality of cells 18a-18f occurring through second planar segments 48 are made in a manner substantially the same as that illustrated in Fig. 5 for connection to first planar segment 46.
As shown in Fig. 3, the serial electrical connection of cells 18a-18f is completed by electrically connecting the second lead of cell 18f in a manner generally known in the art to terminal 88 which is coupled to the exterior of battery case 12 and, more particularly, to end wall 34.
As indicated above, the position of each cell 18a-18f within its respective cavity is dictated by the positioning of stops 62 as best illustrated in Figs. 3 and 5. More particularly, each of the cells 18a-18f is disposed within a respective cavity 40 until one of the first 26 and second 28 leads connected thereto engage the stops 62 projecting inwardly into the cavity 40. The stops 62 facilitate the proper positioning of the TMF
cells 18 relative to one another to allow precise electrical interconnection, as described above, with relative ease and simplicity.
As seen from the above description and the accompanying drawings, each vent 35 68 is centered over one of the cells 18 and is recessed down toward the level of the top of a cell 18. The result is that there is very little free space in which gas can accumulate without venting. The vent 68 accommodates the venting of gas but restricts the exit of electrolyte. Because the top 14 and bottom 16 contain identical structures for attachment to the body 12, the terminals 86 and 88 can be located at the top by simply reversing the top 14 and bottom 16 before heat sealing to the body 12.
Illustrative embodiments of the invention have been described in considerable detail for the purpose of disclosing practical, operative structures whereby the invention may be practiced advantageously. The designs described are intended to be illustrative only. The novel characteristics of the invention may be incorporated in other structural forms without departing from the scope of the invention as defined in the following claims.
Claims (13)
1. In a battery (8) having a battery housing ( 12) containing a cell cavity (40) for holding a battery cell (18), an apparatus for venting gases from the battery (8), the apparatus comprising:
a battery housing cover (14) having an upper planar member (64) and a vent (68) including a well (72) interconnecting the upper planar member (64) and a bottom wall ( 73} of the vent (68), the vent further including a pipe (7I) extending upward from the bottom wall (73) of the vent (68), the pipe (71) defining a venting passage (70), a bottom portion of the pipe (71) including a vent opening (76) arid a baffle (75) positioned to partially interrupt fluid flow through the vent opening (76),the vent (68) being dimensioned such that when the battery housing cover (14) is sealed to the battery housing (12) the bottom wall (73) of the vent {68) is positioned below an uppermost edge of an upper end of the cell cavity (40);
a valve cap (77) disposed over the top of the pipe (71), the valve cap (77) being made of a flexible material and being sized to hermetically seal the venting passage (70) of the pipe (71) up to a venting pressure within the cavity (40), the valve cap (77) expanding at the venting pressure to allow gases from within the cavity (40) to vent and contracting when below the venting pressure to reseal the venting passage (70) of the pipe (71); and a well lid (78) secured to the top of the well (72), the well lid (78) including at least one opening (78') for the escape of gases.
a battery housing cover (14) having an upper planar member (64) and a vent (68) including a well (72) interconnecting the upper planar member (64) and a bottom wall ( 73} of the vent (68), the vent further including a pipe (7I) extending upward from the bottom wall (73) of the vent (68), the pipe (71) defining a venting passage (70), a bottom portion of the pipe (71) including a vent opening (76) arid a baffle (75) positioned to partially interrupt fluid flow through the vent opening (76),the vent (68) being dimensioned such that when the battery housing cover (14) is sealed to the battery housing (12) the bottom wall (73) of the vent {68) is positioned below an uppermost edge of an upper end of the cell cavity (40);
a valve cap (77) disposed over the top of the pipe (71), the valve cap (77) being made of a flexible material and being sized to hermetically seal the venting passage (70) of the pipe (71) up to a venting pressure within the cavity (40), the valve cap (77) expanding at the venting pressure to allow gases from within the cavity (40) to vent and contracting when below the venting pressure to reseal the venting passage (70) of the pipe (71); and a well lid (78) secured to the top of the well (72), the well lid (78) including at least one opening (78') for the escape of gases.
2. The apparatus of claim 1 wherein:
the well (72) is dimensioned such that when the battery housing cover (14) is sealed to the battery housing (12) the bottom wall (73) of the vent (68) is positioned adjacent the top of the battery cell (18) in order to minimize free space in which gas can accumulate without venting.
the well (72) is dimensioned such that when the battery housing cover (14) is sealed to the battery housing (12) the bottom wall (73) of the vent (68) is positioned adjacent the top of the battery cell (18) in order to minimize free space in which gas can accumulate without venting.
3. The apparatus of claim 2 wherein:
the well (72) of the vent (68) is substantially centered within the upper end of the cavity (40).
_9_
the well (72) of the vent (68) is substantially centered within the upper end of the cavity (40).
_9_
4. The apparatus of claim 3 wherein:
the well lid (78) and the top of the well (72) are dimensioned such that the well lid (78) releases from the top of the well (72) at an overcharge pressure.
the well lid (78) and the top of the well (72) are dimensioned such that the well lid (78) releases from the top of the well (72) at an overcharge pressure.
5. The apparatus of claim 4 wherein:
the bottom wall (73) of the vent (68) includes at least one upper rib (81 }
protruding from a top surface of the bottom wall (73) of the vent (68), and at least one lower rib (83) protruding from a lower surface of the bottom wall (73) of the vent (68).
the bottom wall (73) of the vent (68) includes at least one upper rib (81 }
protruding from a top surface of the bottom wall (73) of the vent (68), and at least one lower rib (83) protruding from a lower surface of the bottom wall (73) of the vent (68).
6. The apparatus of claim 5 wherein:
each upper rib (81 ) extends firm an inner surface of the well (72) to the pipe (71).
each upper rib (81 ) extends firm an inner surface of the well (72) to the pipe (71).
7. A battery (8) comprising:
a battery housing cover ( 12) containing a plurality of cell cavities (40), the cell cavities (40) suitable for holding a battery cell (18);
a battery housing cover (14) having an upper planar member (64) and a plurality of vents (68), each vent (68) including a well (72) interconnecting the upper planar member (64) and a bottom wall (73) of the vent (68), each vent (68) further including a pipe (71 ) extending upward from the bottom wall (73) of the vent (68), the pipe (71) defining a venting passage (70), a bottom portion of the pipe (7I) including a vent opening (76) and a baffle (75) positioned to partially interrupt fluid flow through the vent opening ( 76}, the vent (68) being dimensioned such that when the battery housing cover (14) is sealed to the battery housing (12) the bottom wall (73) of each vent (68) is positioned below an uppermost edge of an upper end of each cell cavity (40);
a plurality of valve caps (77), each valve cap (77) being disposed over the top of the pipe (71) of one the vents (68), each valve cap (77) being made of a flexible material and being sized to hermetically seal the venting passage (70) of its associated pipe ( 71) up to a venting pressure within the cavity (40) below the pipe (71), each valve cap (77) expanding at the venting pressure to allow gases from within the cavity (40) below the pipe (71 ) t0 vent and contracting when below the venting pressure to reseal the venting passage (70) of the pipe (71); and a plurality of well lids (78), each well lid (78) being secured to the top of one of the wells (72), each well lid (78) including at least one opening (78') for the escape of gases.
-9a-
a battery housing cover ( 12) containing a plurality of cell cavities (40), the cell cavities (40) suitable for holding a battery cell (18);
a battery housing cover (14) having an upper planar member (64) and a plurality of vents (68), each vent (68) including a well (72) interconnecting the upper planar member (64) and a bottom wall (73) of the vent (68), each vent (68) further including a pipe (71 ) extending upward from the bottom wall (73) of the vent (68), the pipe (71) defining a venting passage (70), a bottom portion of the pipe (7I) including a vent opening (76) and a baffle (75) positioned to partially interrupt fluid flow through the vent opening ( 76}, the vent (68) being dimensioned such that when the battery housing cover (14) is sealed to the battery housing (12) the bottom wall (73) of each vent (68) is positioned below an uppermost edge of an upper end of each cell cavity (40);
a plurality of valve caps (77), each valve cap (77) being disposed over the top of the pipe (71) of one the vents (68), each valve cap (77) being made of a flexible material and being sized to hermetically seal the venting passage (70) of its associated pipe ( 71) up to a venting pressure within the cavity (40) below the pipe (71), each valve cap (77) expanding at the venting pressure to allow gases from within the cavity (40) below the pipe (71 ) t0 vent and contracting when below the venting pressure to reseal the venting passage (70) of the pipe (71); and a plurality of well lids (78), each well lid (78) being secured to the top of one of the wells (72), each well lid (78) including at least one opening (78') for the escape of gases.
-9a-
8. The battery of claim 7 wherein:
each well (72) is dimensioned such that when the battery housing cover ( 14) is sealed to the battery housing (12) the bottom wall (73) of each vent (68) is positioned adjacent the top of the battery cell {18) in the cell cavity (40) below each vent (72) in order to minimize free space in which gas can accumulate without venting.
each well (72) is dimensioned such that when the battery housing cover ( 14) is sealed to the battery housing (12) the bottom wall (73) of each vent (68) is positioned adjacent the top of the battery cell {18) in the cell cavity (40) below each vent (72) in order to minimize free space in which gas can accumulate without venting.
9. The battery of claim 8 wherein:
the well (72) of each vent (68) is substantially centered within the upper end of the cavity (40) below each vent (72).
the well (72) of each vent (68) is substantially centered within the upper end of the cavity (40) below each vent (72).
10. The battery of claim 9 wherein:
each cavity (40) contains a planar segment (46) to facilitate alignment with an upstanding terminal tab (27) of each battery cell (18).
each cavity (40) contains a planar segment (46) to facilitate alignment with an upstanding terminal tab (27) of each battery cell (18).
11. The battery of claim 10 wherein:
each well (72) is dimensioned such that when the battery housing cover (14) is sealed to the battery housing (12) each terminal tab (27) is positioned between one of the wells ( 72) and one of the planar segments (46).
each well (72) is dimensioned such that when the battery housing cover (14) is sealed to the battery housing (12) each terminal tab (27) is positioned between one of the wells ( 72) and one of the planar segments (46).
12. The battery of claim 11 further including:
a battery housing base (16), the battery housing base (16) and the battery housing cover (14) having identical structures for attachment to the battery housing (12).
a battery housing base (16), the battery housing base (16) and the battery housing cover (14) having identical structures for attachment to the battery housing (12).
13. The battery of claim 12 wherein:
the battery cell (18) is a thin metal film cell.
the battery cell (18) is a thin metal film cell.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US7178998P | 1998-01-19 | 1998-01-19 | |
| US60/071,789 | 1998-01-19 | ||
| PCT/US1999/000985 WO1999036977A1 (en) | 1998-01-19 | 1999-01-18 | Vent cover for battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2318554A1 true CA2318554A1 (en) | 1999-07-22 |
Family
ID=22103615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002318554A Abandoned CA2318554A1 (en) | 1998-01-19 | 1999-01-18 | Vent cover for battery |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US6255014B1 (en) |
| EP (1) | EP1050084A1 (en) |
| JP (1) | JP2002510127A (en) |
| CN (1) | CN1291357A (en) |
| BR (1) | BR9907035A (en) |
| CA (1) | CA2318554A1 (en) |
| MX (1) | MXPA00007032A (en) |
| WO (1) | WO1999036977A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9149961B2 (en) | 2011-08-30 | 2015-10-06 | Johnson Controls Technology Company | System and method for manufacturing a vehicle trim component via concurrent compression forming and injection molding |
| US10093268B2 (en) | 2012-08-27 | 2018-10-09 | Shanghai Yanfeng Jinqiao Automotive Trim Systems Co. Ltd. | Trim component for vehicle interior |
| US10464280B2 (en) | 2011-08-30 | 2019-11-05 | Shanghai Yanfeng Jinqiao Automotive Trim Systems Co. Ltd. | Trim component for vehicle interior |
| US10981532B2 (en) | 2018-06-28 | 2021-04-20 | Shanghai Yanfeng Jinqiao Automotive Trim Systems Co. Ltd. | Vehicle trim component |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002009209A2 (en) * | 1999-01-18 | 2002-01-31 | Johnson Controls Technology Company | Center point vent cover for battery |
| JP4224186B2 (en) * | 1999-06-10 | 2009-02-12 | パナソニック株式会社 | Collective secondary battery |
| WO2002009210A2 (en) * | 2000-07-21 | 2002-01-31 | Johnson Controls Technology Company | Battery case for thin metal film cells |
| DE10038472A1 (en) * | 2000-08-07 | 2002-02-21 | Hoppecke Zoellner Sohn Accu | accumulator |
| US7045236B1 (en) | 2001-08-10 | 2006-05-16 | Johnson Controls Technology Company | Heat and gas exchange system for battery |
| US6828755B1 (en) * | 2001-10-15 | 2004-12-07 | Johnson Controls Technology Company | Battery system module |
| DE10254950B4 (en) * | 2002-11-26 | 2005-02-17 | Vb Autobatterie Gmbh | Accumulator, in particular lead-acid battery |
| US7332243B2 (en) * | 2003-01-09 | 2008-02-19 | Johnson Controls Technology Company | Battery and battery container |
| US7189473B2 (en) * | 2003-06-03 | 2007-03-13 | Eastway Fair Company Limited | Battery venting system |
| CN101436678B (en) * | 2008-12-22 | 2011-05-04 | 浙江海久电池股份有限公司 | Valve-controlled type maintenance-free dry charge lead acid battery capable of being used with side displacement |
| KR101065926B1 (en) * | 2009-07-09 | 2011-09-19 | 삼성에스디아이 주식회사 | Battery pack with multiple unit cells |
| JP5741415B2 (en) * | 2011-12-07 | 2015-07-01 | 株式会社デンソー | Assembled battery |
| JP5604018B2 (en) * | 2012-09-04 | 2014-10-08 | パナソニック株式会社 | Battery block and manufacturing method thereof |
| DE102012221751A1 (en) * | 2012-11-28 | 2014-05-28 | Robert Bosch Gmbh | Battery module with battery module cover and a method for making a battery module cover of a battery module |
| DE102015214526A1 (en) * | 2015-07-30 | 2017-02-02 | Robert Bosch Gmbh | Compact battery module |
| KR102417637B1 (en) * | 2015-10-02 | 2022-07-06 | 삼성에스디아이 주식회사 | A secondary battery |
| JP6633989B2 (en) * | 2016-07-29 | 2020-01-22 | 矢崎総業株式会社 | Battery pack |
| CN114678638B (en) * | 2022-03-31 | 2023-08-15 | 欣旺达电动汽车电池有限公司 | Exhaust components, battery modules and battery packs |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3110634A (en) | 1961-06-29 | 1963-11-12 | Gould National Batteries Inc | Multiple cell battery case |
| US3494800A (en) | 1968-04-08 | 1970-02-10 | Mark Shoeld | Method of making lead acid storage battery |
| GB1378655A (en) | 1972-05-17 | 1974-12-27 | Lucas Industries Ltd | Battery boxes |
| US4346151A (en) | 1980-12-29 | 1982-08-24 | The Gates Rubber Company | Multicell sealed rechargeable battery |
| US4383011A (en) * | 1980-12-29 | 1983-05-10 | The Gates Rubber Company | Multicell recombining lead-acid battery |
| US4460663A (en) | 1983-01-07 | 1984-07-17 | Sab Nife Ab | Battery casing construction and method of making same |
| GB8325949D0 (en) * | 1983-09-28 | 1983-11-02 | Tungstone Batteries Ltd | Electric batteries |
| JPS60131754A (en) | 1983-12-19 | 1985-07-13 | Matsushita Electric Ind Co Ltd | sealed lead acid battery |
| IT1175854B (en) | 1984-07-19 | 1987-07-15 | Accuma Spa | PROCEDURE FOR THE CREATION OF A CONTAINER OR BOX FOR ELECTRIC BATTERY, AS WELL AS CONTAINER OR BOX FOR BATTERY SO OBTAINED |
| JPS62249352A (en) | 1986-04-22 | 1987-10-30 | Shin Kobe Electric Mach Co Ltd | Manufacture of sealed lead-acid battery |
| US5198313A (en) | 1989-06-14 | 1993-03-30 | Bolder Battery, Inc. | Battery end connector |
| US5368961A (en) | 1989-06-14 | 1994-11-29 | Bolder Battery, Inc. | Thin plate electrochemical cell |
| US5047300A (en) | 1989-06-14 | 1991-09-10 | Bolder Battery, Inc. | Ultra-thin plate electrochemical cell |
| US5045086A (en) | 1989-06-14 | 1991-09-03 | Bolder Battery, Inc. | Method for manufacture of electrochemical cell |
| US5356733A (en) | 1993-10-29 | 1994-10-18 | Hawker Energy Products, Inc. | Battery acid deflector |
| US5464701A (en) * | 1995-02-27 | 1995-11-07 | Eagle-Picher Industries, Inc. | Leakproof, valve regulated, maintenance-free lead acid battery |
| US5686202A (en) | 1995-10-18 | 1997-11-11 | Hawker Energy Products, Inc. | Stress resistant battery configuration |
| US6051336A (en) * | 1998-01-19 | 2000-04-18 | Johnson Controls Technology | Battery case for thin metal film cells |
-
1999
- 1999-01-18 MX MXPA00007032A patent/MXPA00007032A/en not_active Application Discontinuation
- 1999-01-18 EP EP99903142A patent/EP1050084A1/en not_active Withdrawn
- 1999-01-18 BR BR9907035-9A patent/BR9907035A/en not_active IP Right Cessation
- 1999-01-18 JP JP2000540592A patent/JP2002510127A/en not_active Withdrawn
- 1999-01-18 CN CN99803156A patent/CN1291357A/en active Pending
- 1999-01-18 WO PCT/US1999/000985 patent/WO1999036977A1/en not_active Ceased
- 1999-01-18 US US09/232,542 patent/US6255014B1/en not_active Expired - Fee Related
- 1999-01-18 CA CA002318554A patent/CA2318554A1/en not_active Abandoned
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9149961B2 (en) | 2011-08-30 | 2015-10-06 | Johnson Controls Technology Company | System and method for manufacturing a vehicle trim component via concurrent compression forming and injection molding |
| US10118325B2 (en) | 2011-08-30 | 2018-11-06 | Shanghai Yanfeng Jinqiao Automotive Trim Systems Co. Ltd. | Vehicle trim component |
| US10464280B2 (en) | 2011-08-30 | 2019-11-05 | Shanghai Yanfeng Jinqiao Automotive Trim Systems Co. Ltd. | Trim component for vehicle interior |
| US10093268B2 (en) | 2012-08-27 | 2018-10-09 | Shanghai Yanfeng Jinqiao Automotive Trim Systems Co. Ltd. | Trim component for vehicle interior |
| US10981532B2 (en) | 2018-06-28 | 2021-04-20 | Shanghai Yanfeng Jinqiao Automotive Trim Systems Co. Ltd. | Vehicle trim component |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002510127A (en) | 2002-04-02 |
| WO1999036977A1 (en) | 1999-07-22 |
| US6255014B1 (en) | 2001-07-03 |
| MXPA00007032A (en) | 2002-06-04 |
| EP1050084A1 (en) | 2000-11-08 |
| CN1291357A (en) | 2001-04-11 |
| BR9907035A (en) | 2000-10-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6255014B1 (en) | Center point vent cover for battery | |
| US7094496B2 (en) | Electrical accumulator batteries | |
| CA1279365C (en) | Electric storage battery | |
| CN101388439B (en) | Pouch for battery and pouch type secondary battery | |
| CA1111103A (en) | Battery and battery container having air-flow passages therethrough | |
| MXPA00007030A (en) | Battery case for thin metal film cells. | |
| US6551741B1 (en) | Battery module | |
| KR101424003B1 (en) | Pouch-type Secondary Battery for preventing swelling phenomena | |
| JP2001313007A (en) | Cell structure with imporoved energy density | |
| CN1321468C (en) | Quadrangular secondary battery having lead plate attached thereto | |
| RU2308791C1 (en) | Packing arrangement for polymeric lithium-ion battery | |
| US6063520A (en) | Lightweight battery container and method for fabrication of same | |
| US5356733A (en) | Battery acid deflector | |
| WO2002009209A2 (en) | Center point vent cover for battery | |
| JPH0992325A (en) | Sealed lead-acid battery and method of manufacturing the same | |
| JPH0471309B2 (en) | ||
| JPH0535579Y2 (en) | ||
| CN220934304U (en) | Batteries and electrical devices | |
| CN223757579U (en) | Secondary battery | |
| CN223680328U (en) | A solid-state battery with a series-parallel structure | |
| JP4582862B2 (en) | Secondary battery | |
| JPH0517814Y2 (en) | ||
| WO2002009210A2 (en) | Battery case for thin metal film cells | |
| JPH0525178Y2 (en) | ||
| KR20070034219A (en) | Square secondary battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |