Separator for secondary battery, manufacturing method thereof, method for manufacturing secondary battery comprising the separator and secondary battery manufactured by the method
US-12183949-B2 · Dec 31, 2024 · US
Methods related to x-ray sensitive battery separators
US2016011127A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016011127-A1 |
| Application number | US-201514859471-A |
| Country | US |
| Kind code | A1 |
| Filing date | Sep 21, 2015 |
| Priority date | Jan 19, 2010 |
| Publication date | Jan 14, 2016 |
| Grant date | — |
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Abstract
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A method for detecting the position of a separator relative to electrodes in a secondary lithium battery includes the steps of: providing a secondary lithium battery including a positive electrode, a negative electrode, a X-ray sensitive separator located between the electrodes, and a can or pouch housing the electrodes and separator, the X-ray sensitive separator comprising a microporous membrane having a X-ray detectable element dispersed therein or thereon, the X-ray detectable element comprising at least 2 and no greater than 20 weight % of the membrane; subjecting the secondary lithium battery to X-ray radiation; determining the position of the separator relative to the electrodes; and approving or rejecting the secondary lithium battery based upon the position of the separator relative to the electrodes.
First claim
Opening claim text (preview).
We claim: 1 . A method for detecting the position of a separator relative to electrodes in a secondary lithium battery comprising the steps of: providing a secondary lithium battery including a positive electrode, a negative electrode, a X-ray sensitive separator located between the electrodes, and a can or pouch housing the electrodes and separator, the X-ray sensitive separator comprising a microporous membrane having a X-ray detectable element dispersed therein or thereon, the X-ray detectable element comprising at least 2 and no greater than 20 weight of the membrane; subjecting the secondary lithium battery to X-ray radiation; determining the position of the separator relative to the electrodes; and approving or rejecting the secondary lithium battery based upon the position of the separator relative to the electrodes. 2 . The method of claim 1 wherein the X-ray detectable element comprising 2 to 10 weight % of the membrane. 3 . The method of claim 1 wherein the X-ray detectable element comprising 2 to 5 weight % of the membrane. 4 . The method of claim 1 wherein the X-ray detectable element comprising about 4 weight % of the membrane. 5 . The method of claim 1 wherein the X-ray detectable element being selected from the group consisting of metal, metal oxide, metal phosphate, metal carbonate, X-ray fluorescent material, metal salt, metal sulfate, or mixtures thereof, and any of the foregoing metals being selected from the group consisting of Zn, Ti, Mn, Ba, Ni, W, Hg, Si, Cs, Sr, Ca, Rb, Ta, Zr, Al, Pb, Sn, Sb, Cu, Fe, and mixtures thereof. 6 . The method of claim 1 wherein the X-ray detectable element being barium sulfate. 7 . The method of claim 1 wherein the X-ray detectable element is in a coating on the membrane. 8 . The method of claim 7 wherein the coating is a ceramic coating. 9 . The method of claim 8 wherein the X-ray detectable element being barium. 10 . The method of claim 1 wherein the X-ray detectable element is at least one of dispersed therein, coated thereon, or added thereto.
Assignees
Inventors
Classifications
- H01M10/4235Primary
Safety or regulating additives or arrangements in electrodes, separators or electrolyte (H01M10/4242 takes precedence) · CPC title
comprising three or more layers · CPC title
Porosity · CPC title
- G01N23/083Primary
the radiation being X-rays · CPC title
Inorganic material · CPC title
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- What does patent US2016011127A1 cover?
- A method for detecting the position of a separator relative to electrodes in a secondary lithium battery includes the steps of: providing a secondary lithium battery including a positive electrode, a negative electrode, a X-ray sensitive separator located between the electrodes, and a can or pouch housing the electrodes and separator, the X-ray sensitive separator comprising a microporous membr…
- Who is the assignee on this patent?
- Celgard Llc
- What technology area does this patent fall under?
- Primary CPC classification H01M10/4235. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Jan 14 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).