Electrical battery assembly and method of manufacture
First Claim
1. An electrical storage battery comprising:
- a case defining an internal volume therein;
a spiral sandwich member disposed inside the internal volume of the case, the spiral sandwich member including;
a positive electrode member;
a negative electrode member;
a separator member physically separating the positive and negative electrode members from one another,an electrolyte; and
a central support member;
wherein the positive electrode, the negative electrode, and the separator are disposed in a spiral configuration around the central support member;
wherein one electrode of the positive and negative electrodes is electrically connected to the central support member and further including a battery terminal coupled to the central support member by a flexible projecting member attached to or integral with the central support member, the flexible projecting member including a tab extending from an arm.
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Accused Products
Abstract
The invention provides electrical storage battery assemblies and related methods for assembling such batteries. A battery assembly includes positive and negative electrode sheets and separator sheets sandwiched together and wrapped around a central mandrel to provide a spiral sandwich electrode assembly. The electrode assembly is housed inside a case that includes a case housing open at two ends and covers closing the two openings. The central mandrel of the electrode assembly is in electrical contact with one of the electrode sheets and a first battery terminal that passes through the case. A projecting member on the central mandrel provides the electrical connection between the electrode and the first battery terminal. The other electrode is in electrical contact with the case. A first insulator lies between the electrode assembly and the projecting member. A second insulator is positioned between the projecting member and the case.
128 Citations
39 Claims
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1. An electrical storage battery comprising:
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a case defining an internal volume therein; a spiral sandwich member disposed inside the internal volume of the case, the spiral sandwich member including; a positive electrode member; a negative electrode member; a separator member physically separating the positive and negative electrode members from one another, an electrolyte; and a central support member; wherein the positive electrode, the negative electrode, and the separator are disposed in a spiral configuration around the central support member; wherein one electrode of the positive and negative electrodes is electrically connected to the central support member and further including a battery terminal coupled to the central support member by a flexible projecting member attached to or integral with the central support member, the flexible projecting member including a tab extending from an arm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An electrical storage battery made by the method of:
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providing a central support member; assembling a spiral sandwich member around the central support member, wherein the spiral sandwich member comprises; at least one positive electrode member; at least one negative electrode member; and a separator member physically separating the positive and negative electrode members from one another but allowing ionic contact between the positive and negative electrode members through an electrolyte; positioning the spiral sandwich member in a case; placing an electrolyte inside the case; electrically connecting one electrode member of the positive and negative electrode members to a first battery terminal through a flexible projecting member integral with the central support member, the flexible projecting member including a tab extending from an arm; and sealing the case. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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22. A method for assembling an electrical storage battery, the method comprising:
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providing a central support member; assembling a spiral sandwich member comprising; at least one positive electrode member; at least one negative electrode member; and a separator member physically separating the positive and negative electrode members from one another but allowing ionic contact between the positive and negative electrode members through an electrolyte; enclosing the assembled spiral sandwich member in a case; placing an electrolyte inside the case; electrically connecting one electrode member of the positive and negative electrode members to a first battery terminal through a flexible projecting member on the central support member, the flexible projecting member including a tab extending from an arm; and sealing the case. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. An electrical storage battery made by the method of:
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providing an electrode assembly including at least one positive electrode, at least one negative electrode, and at least one separator between the electrodes; installing the electrode assembly inside a case housing open at two ends; closing a first end of the case housing with a first cover, wherein an insulator isolates at least one of the electrodes from the first cover, electrically coupling one of the positive and negative electrodes with the case housing; electrically coupling the other of the positive and negative electrodes to a first battery terminal; electrically insulating the first battery terminal from the case housing; closing the second end of the case housing with a second cover having an electrolyte filling hole; placing an electrolyte inside the case tbrough the electrolyte filling hole; sealing the electrolyte filling hole with a plug member in electrical contact with the case housing, wherein the plug member includes a battery terminal pin, the plug member having a plug region configured to be positioned in the electrolyte filling hole, the plug member also having a pin region extending from a top of the plug region and having a narrower diameter than the top of the plug region, the pin region and plug region both being constructed of the same material as the cover. - View Dependent Claims (34, 35, 36)
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37. A method for assembling an electrical storage battery, the method comprising:
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providing an electrode assembly including at least one positive electrode, at least one negative electrode, and at least one separator between the electrodes; installing the electrode assembly inside a case housing open at two ends; closing a first end of the case housing with a first cover, wherein an insulator isolates at least one of the electrodes from the first cover; electrically coupling one of the positive and negative electrodes to the case housing; electrically coupling the other of the positive and negative electrodes to a first battery terminal; electrically insulating the first battery terminal from the case housing; closing the second end of the ease housing with a second cover member having an electrolyte filling hole; placing an electrolyte inside the case through the electrolyte filling hole; sealing the electrolyte filling hole with a plug member in electrical contact with the case housing, wherein the plug member includes a battery terminal pin, the plug member having a plug region configured to be positioned in the electrolyte filling hole, the plug member also having a pin region extending from a top of the plug region and having a narrower diameter than the plug region, the pin region and plug region both being constructed of the same material as the cover. - View Dependent Claims (38, 39)
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Specification