Conductive mat for battery electrode plate reinforcement and methods of use therefor
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01M-004/14
H01M-002/16
H01M-004/04
H01M-004/20
H01M-010/12
출원번호
US-0045579
(2013-10-03)
등록번호
US-9923196
(2018-03-20)
발명자
/ 주소
Guo, Zhihua
Nandi, Souvik
Asrar, Jawed
Dietz, III, Albert G
출원인 / 주소
Johns Manville
대리인 / 주소
Touslee, Robert D.
인용정보
피인용 횟수 :
0인용 특허 :
9
초록▼
According to one embodiment, a plate or electrode for a lead-acid battery includes a grid of lead alloy material, a paste of active material applied to the grid of lead alloy material, and a nonwoven fiber mat disposed at least partially within the paste of active material. The nonwoven fiber mat in
According to one embodiment, a plate or electrode for a lead-acid battery includes a grid of lead alloy material, a paste of active material applied to the grid of lead alloy material, and a nonwoven fiber mat disposed at least partially within the paste of active material. The nonwoven fiber mat includes a plurality of fibers, a binder material that couples the plurality of fibers together, and a conductive material disposed at least partially within the nonwoven fiber mat so as to contact the paste of active material. In some embodiments, the nonwoven fiber mat may have an electrical resistant of less than about 100,000 ohms per square to enable electron flow on a surface of the nonwoven fiber mat.
대표청구항▼
1. A lead-acid battery comprising: a positive electrode;a negative electrode;a separator positioned between the positive electrode and the negative electrode so as to electrically insulate the positive and negative electrodes, the separator including: a microporous polymer film; anda nonwoven fiber
1. A lead-acid battery comprising: a positive electrode;a negative electrode;a separator positioned between the positive electrode and the negative electrode so as to electrically insulate the positive and negative electrodes, the separator including: a microporous polymer film; anda nonwoven fiber mat positioned adjacent the microporous polymer film so as to reinforce the microporous polymer film; andan additional fiber mat positioned adjacent either the positive electrode or the negative electrode to reinforce the positive or negative electrode, the additional fiber mat being impregnated or saturated with the active material of the positive or negative electrode, wherein the additional fiber mat comprises: a plurality of entangled fibers;a binder material that couples the plurality of entangled fibers together; anda conductive material disposed throughout the additional fiber mat so as to contact the positive or the negative electrode, wherein the additional fiber mat has an electrical resistance of less than about 100,000 ohms per square so as to enable electron flow on the surface of the additional fiber mat, and wherein the additional fiber mat has a total tensile strength of at least 30 lbs/3 inch. 2. The lead-acid battery of claim 1, wherein the additional fiber mat has an electrical resistance of less than about 50,000 ohms per square. 3. The lead-acid battery of claim 1, wherein the separator also includes a conductive material disposed on at least one surface of the nonwoven fiber mat or throughout the nonwoven fiber mat such that the nonwoven fiber mat comprises an electrical resistance of less than about 100,000 ohms per square to enable electron flow on the surface of the nonwoven fiber mat. 4. The lead-acid battery of claim 1, wherein the conductive material comprises a plurality of conductive fibers that are entangled with fibers of the additional fiber mat. 5. The lead-acid battery of claim 4, wherein the binder material includes the plurality of conductive fibers prior to application of the binder with the additional fiber mat. 6. The lead-acid battery of claim 1, wherein the plurality of fibers of the additional fiber mat comprise glass fibers. 7. The lead-acid battery of claim 1, wherein the additional fiber mat comprises a first fiber mat that is positioned on a first side of the positive electrode or the negative electrode so that the first fiber mat directly contacts the positive electrode or the negative electrode, and wherein the lead-acid battery further comprises a second fiber mat that is positioned on a second side of the positive electrode or the negative electrode opposite the first side so that the second fiber mat directly contacts the positive electrode or the negative electrode, wherein the second fiber mat comprises a conductive material disposed on at least one surface of the second fiber mat or throughout the second fiber mat such that the second fiber mat has an electrical resistance of less than about 100,000 ohms per square to enable electron flow on the surface of the second fiber mat. 8. A plate or electrode for a lead-acid battery comprising: a grid of lead alloy material;a paste of active material applied to the grid of lead alloy material; anda nonwoven fiber mat disposed at least partially within the paste of active material, the nonwoven fiber mat including: a plurality of entangled fibers;a binder material that couples the plurality of entangled fibers together; anda conductive material disposed within the nonwoven fiber mat so as to contact the paste of active material, the nonwoven fiber mat having an electrical resistance of less than about 100,000 ohms per square to enable electron flow on a surface of the nonwoven fiber mat and the nonwoven fiber mat having a total tensile strength of at least 30 lbs/3 inch. 9. The plate or electrode of claim 8, wherein the nonwoven fiber mat is disposed within the paste of active material between about 0.001 inches and about 0.020 inches. 10. The plate or electrode of claim 8, wherein the nonwoven fiber mat is a first nonwoven fiber mat, and wherein the plate or electrode further comprises a second nonwoven fiber mat disposed at least partially within the paste of active material on a side opposite the first nonwoven fiber mat such that the plate or electrode is disposed between two nonwoven fiber mats. 11. The plate or electrode of claim 10, wherein the two nonwoven fiber mats comprise opposite sides of a bag that encloses or envelopes the paste of the active material and the plate or electrode. 12. The plate or electrode of claim 8, wherein the binder is applied to the nonwoven fiber mat between about 10% and 45% by weight. 13. The plate or electrode of claim 12, wherein the binder includes the conductive material. 14. The plate or electrode of claim 8, wherein the nonwoven fiber mat comprises fibers selected from the group consisting of: glass fibers, polyolefin fibers, and polyester fibers. 15. The plate or electrode of claim 8, wherein the conductive material comprises a plurality of conductive fibers that are entangled with fibers of the nonwoven fiber mat. 16. The plate or electrode of claim 1, wherein the additional fiber mat has a thickness of between about 50 micrometers and 500 micrometers.
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Hinton Carlos E. ; Scortichini Carey L. ; Mussell Robert D., Bipolar plates for electrochemical cells.
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