1. A nonaqueous electrolyte battery, comprising:
a case;
a positive electrode provided in the case;
a negative electrode provided in the case and comprising a lithium-titanium composite oxide comprising Na and K, wherein an amount of K is larger than an amount of Na; and
a nonaqueous electrolyte provided in the case.
2. The battery according to claim 1, wherein a sum of the amount of Na and the amount of K is from 0.10% by weight to 3.04% by weight of the lithium-titanium composite oxide.
3. The battery according to claim 1, wherein the lithium-titanium composite oxide comprises a crystallite diameter not larger than 6.9\xd7102 \u212b, and in a X-ray diffractometry curve of the lithium-titanium composite oxide, none of a main peak intensity of a rutile type TiO2, a main peak intensity of an anatase type TiO2 and a main peak intensity of Li2TiO3 is larger than 7 when a main peak intensity of a lithium titanate having a spinel structure is set at 100.
4. The battery according to claim 3, wherein the crystallite diameter of the lithium-titanium composite oxide is not smaller than 1.5\xd7102 \u212b.
5. The battery according to claim 3, wherein the crystallite diameter of the lithium-titanium composite oxide is not smaller than 2.6\xd7102 \u212b.
6. The battery according to claim 3, wherein none of the main peak intensity of the rutile type TiO2, the main peak intensity of the anatase type TiO2 and the main peak intensity of Li2TiO3 is larger than 3.
7. The battery according to claim 3, wherein K and Na are positioned in a Li site of lithium titanate.
8. The battery according to claim 1, wherein the nonaqueous electrolyte comprises at least two kinds of solvents selected from the group consisting of propylene carbonate, ethylene carbonate and \u03b3-butyrolactone.
9. The battery according to claim 1, wherein the nonaqueous electrolyte comprises \u03b3-butyrolactone.
10. The battery according to claim 1, wherein the nonaqueous electrolyte comprises at least three kinds of solvents selected from the group consisting of propylene carbonate, ethylene carbonate, y-butyrolactone, and vinylene carbonate.
11. The battery according to claim 1, wherein the positive electrode comprises a compound represented by LiaNibCocMndO2, where 0\u2266a\u22661.1, 0.1\u2266b\u22660.5, 0\u2266c\u22660.9 and 0.1\u2266d\u22660.5.
12. The battery according to claim 1, wherein the lithium-titanium composite oxide comprises particles having an average particle diameter not larger than 1 \u03bcm.
13. A battery pack comprising nonaqueous electrolyte batteries,
each of the nonaqueous electrolyte batteries comprising:
a case;
a positive electrode provided in the case;
a negative electrode provided in the case comprising a lithium-titanium composite oxide comprising Na and K, wherein an amount of K is larger than an amount of Na; and
a nonaqueous electrolyte provided in the case.
14. The battery pack according to claim 13, further comprising a protective circuit which detects a voltage of each of the nonaqueous electrolyte batteries.
15. A vehicle comprising a battery pack defined in claim 13.
16. A lithium-titanium composite oxide comprising Na and K, and an amount of K is larger than an amount of Na.
17. The lithium-titanium composite oxide according to claim 16, wherein a sum of the amount of Na and the amount of K falls within a range of 0.10% by weight to 3.04% by weight.
18. The lithium-titanium composite oxide according to claim 16, which comprises particles having an average particle diameter not larger than 1 \u03bcm.
19. The lithium-titanium composite oxide according to claim 16, which comprises a crystallite diameter not larger than 6.9\xd7102 \u212b, and in a X-ray diffractometry curve of the lithium-titanium composite oxide, none of a main peak intensity of a rutile type TiO2, a main peak intensity of an anatase type TiO2 and a main peak intensity of Li2TiO3 is larger than 7 when a main peak intensity of a lithium titanate having a spinel structure is set at 100.
20. The lithium-titanium composite oxide according to claim 19, wherein K and Na are positioned in a Li site of lithium titanate.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A self-propelled road milling machine including a milling drum housing mounted on the chassis of the machine, said milling drum housing including a side comprising a power take-off able to transmit the rotational motion from an engine, inside said milling drum housing being alternatively mountable a series of milling drums each of which being made of a single piece including cutting tools on its external surface, said milling machine comprising one milling drum of said series being mounted in an axially sliding way from the side opposed with respect to the side of said power take-off in order to allow the replacement of said milling drum, said milling drum comprising fastening elements radially protruding from an internal surface of the milling drum, the rotation of said milling drum being realized by means of a reduction gear, said reduction gear being mounted at the end of a hollow spacer placed between said reduction gear and said side including the power take-off, in said hollow spacer being present the transmission shaft transmitting the rotatory motion from said power take-off to said reduction gear, said reduction gear being supported on the side opposed with respect to the side of said power take-off by a support wherein said hollow spacer rigidly connects the wall of the milling drum housing corresponding to the side of said power take-off to a support flange of said reduction gear, said reduction gear being connected to a spacer on the side opposed with respect to the side of said power take-off and said spacer engaging with a rotatable flange of said reduction gear, said spacer being connected to said fastening elements of said milling drum and with said support on the wall of said milling drum housing opposed with respect to said power take-off side, said support including bearings, all being coordinated and structured in such a way that said support flange and said hollow spacer are static with respect to the rotary movement of said milling drum.
2. The self-propelled road milling machine according to claim 1 further comprising support means of said milling drum able to support said milling drum from the side of said power take-off, said support means including a static part with respect to the rotary movement of said milling drum and a rotatable part integral with said milling drum once the drum is mounted, between said two parts being interposed a bearing, said static part being fixed on said hollow spacer.
3. The self-propelled road milling machine according to claim 2 wherein said static part of said support means of said milling drum able to support said milling drum from the side of said power take-off include a ring fixed to said hollow spacer by a self-centering clamping.
4. The self-propelled road milling machine according to claim 2 wherein said support means of said milling drum able to support said milling drum from the side of said power take-off are positionable in different points of the external surface of said hollow spacer, said positioning happening with a sliding of said means along said external surface of said hollow spacer, said support means of said milling drum including suitable means to lock said sliding.
5. The self-propelled road milling machine according to claim 1 wherein said series of milling drums includes independent alternatively mountable milling drums made of a single piece having different overall width.
6. The self-propelled road milling machine according to claim 1 wherein said support including bearings and supporting said reduction gear on the side opposed with respect to the side of said power take-off is sliding in a bushing longitudinally with respect to the axis the of said milling drum.
7. The self-propelled road milling machine according to claim 1 wherein the wall of said drum milling housing on the opposed side with respect to the side of said power take-off is hinged according to a vertical axis.
8. The self-propelled road milling machine according to claim 1 further comprising segmented shells able to be mounted on the radially external surface of the portion of said hollow spacer between the end of said milling drum corresponding to the side of said power take-off and between the wall of said milling drum housing on which said power take-off is present, the reciprocal connection of each segment with the radially adjacent segments forming a cylindrical cavity with a diameter corresponding to the major diameter of said hollow spacer.
9. The self-propelled road milling machine according to claim 8 wherein said segmented shells are couples of shells.
10. The self-propelled road milling machine according to claim 8 wherein said segmented shells are thirds of shell.
11. The self-propelled road milling machine according to claim 1 wherein said milling drum housing is provided with a vertically movable rear mouldboard, said mouldboard being provided with scraper tools in the lower edge.
12. The self-propelled road milling machine according to claim 11 wherein said rear mouldboard is hinged on an horizontal axis.
13. The self-propelled road milling machine according to claim 11 wherein said rear mouldboard includes means able to maintain said rear mouldboard in contact with the surface milled with forced or floating action.
14. The self-propelled road milling machine according to claim 1 wherein said milling drum housing is provided with side movable plates including means able to maintain said side movable plates in contact with the surface milled with forced or floating action.
15. The self-propelled road milling machine according to claim 1 further comprising at least one conveyor belt able to transport the material milled by said milling drum to suitable means for the collection of the milled material, said conveyor belt receiving the milled material flowing from an opening of said milling drum housing.
16. The self-propelled road milling machine according to claim 15, further comprising a collecting conveyor belt receiving the milled material flowing from said opening of said milling drum housing and a loading conveyor belt able to transport the milled material to said suitable means for the collection of the milled material.
17. The self-propelled road milling machine according to claim 16 wherein the part of said collecting belt close to said milling drum housing is supported by means maintained in contact with the surface to mill.
18. The self-propelled road milling machine according to claim 1 wherein the discharge of the milled material occurs frontally with respect to the advancing direction of the machine.
19. The self-propelled road milling machine according to claim 1 wherein the discharge of the milled material occurs rearwardly with respect to the advancing direction of the machine.
20. The self-propelled road milling machine according to claim 1 wherein said hollow spacer is made of stainless steel.
21. The self-propelled road milling machine according to claim 1 wherein the radially external surface of said hollow spacer is superficially treated by means of plating.
22. The self-propelled road milling machine according to claim 1 wherein the radially external surface of said hollow spacer is superficially treated by means of chrome coating.