Switching power supply unit and disk array system
First Claim
1. A switching power supply unit which has charge accumulating unit and can supply an electric power to a load in case of emergency, wherein:
- an electric power converting circuit and a state monitoring and control unit having a state monitoring unit of said charge accumulating unit and a control unit for controlling said electric power converting circuit are connected to said charge accumulating unit;
said electric power converting circuit is connected to a direct-current line in said switching power supply unit so that a charge and a discharge of said charge accumulating unit can be performed; and
a backup unit having said charge accumulating unit and said state monitoring and control unit is detachably provided in a casing of said switching power supply unit.
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Accused Products
Abstract
An object of the invention is to provide a small and low-cost switching power supply unit with a backup function in which a proper circuit construction can be selected by simple method when it is necessary to compensate for the instantaneous drop or power failure and a disk array system having the switching power supply unit. To accomplish the object, a backup unit which can insert and pull out its hot line into a switching power supply unit casing and has a secondary battery and its state monitoring/control unit is built in the unit, and proper charge/discharge management of the secondary battery can be made. When the backup unit is unnecessary, a backup unit formed by a plurality of capacitors whose hot lines can be similarly inserted and pulled out can be built in an enclosing space of the backup unit.
55 Citations
14 Claims
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1. A switching power supply unit which has charge accumulating unit and can supply an electric power to a load in case of emergency, wherein:
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an electric power converting circuit and a state monitoring and control unit having a state monitoring unit of said charge accumulating unit and a control unit for controlling said electric power converting circuit are connected to said charge accumulating unit;
said electric power converting circuit is connected to a direct-current line in said switching power supply unit so that a charge and a discharge of said charge accumulating unit can be performed; and
a backup unit having said charge accumulating unit and said state monitoring and control unit is detachably provided in a casing of said switching power supply unit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A switching power supply unit which has a charge accumulating unit and supplies an electric power to a load in case of emergency, wherein
either a first backup unit having a secondary battery and a state monitoring and control unit of said secondary battery or a second backup unit having a capacitor and a state monitoring and control unit of said capacitor is detachably connected to a connector provided in a casing of said switching power supply unit.
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11. A disk array system having a switching power supply unit which has a charge accumulating unit and supplies an electric power to a load in case of emergency, wherein
said switching power supply unit is arranged in a rack casing of said disk array system and said switching power supply unit can insert and pull out a hot line into/from said disk array system.
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13. A disk array system which has charge accumulating unit and can supply an electric power to a load in case of emergency, wherein
either a first backup unit having a secondary battery and a state monitoring and control unit of said secondary battery or a second backup unit having a capacitor and a state monitoring and control unit of said capacitor is detachably connected to a connector provided in a rack casing of said disk array system.
Specification