Power supply apparatus

Abstract

Disclosed is a power supply apparatus. The power supply apparatus includes a first magnetic core; a second magnetic core having a shape equal to a shape of the first magnetic core; a third magnetic core between the first and second magnetic cores; a first coil wound around one of the first and third magnetic cores; and a second coil wound around one of the second and third magnetic cores.

1 . A power supply apparatus comprising:
 a first magnetic core;   a second magnetic core having a shape equal to a shape of the first magnetic core;   a third magnetic core between the first and second magnetic cores;   a first coil wound around one of the first and third magnetic cores; and   a second coil wound around one of the second and third magnetic cores.   
     
     
         2 . The power supply apparatus of  claim 1 , wherein each of the first and second magnetic cores comprises:
 a first core part;   a second core part extending from one end of the first core part vertically to a length direction of the first core part; and   a third core part extending from an opposite end of the first core part vertically to the length direction of the first core part, and   wherein the third magnetic core is parallel to the first core parts of the first and second magnetic cores.   
     
     
         3 . The power supply apparatus of  claim 2 , wherein the first magnetic core has a shape of ‘U’,
 the second magnetic core is symmetrical to the first magnetic core about the third magnetic core, and 
 the third magnetic core has a shape of ‘|’. 
 
     
     
         4 . The power supply apparatus of  claim 2 , wherein the first and third magnetic cores are spaced apart from each other by a first air gap formed between at least one of the second and third core parts of the first magnetic core and the third magnetic core, and
 the second and third magnetic cores are spaced apart from each other by a second air gap formed between at least one of the second and third core parts of the second magnetic core and the third magnetic core.   
     
     
         5 . The power supply apparatus of  claim 4 , wherein the first air gap is formed in at least one of right sides of the second and third core parts of the first magnetic core and a left side of the third magnetic core, and
 the second air gap is formed in at least one of left sides of the second and third core parts of the second magnetic core and a right side of the third magnetic core.   
     
     
         6 . The power supply apparatus of  claim 2 , wherein the first coil is wound around one of the first to third core parts of the first magnetic core, and
 the second coil is wound around one of core parts of the second magnetic core, which is symmetrical to the core part of the first magnetic core around which the first coil is wound.   
     
     
         7 . The power supply apparatus of  claim 6 , wherein the first coil is wound lengthwise along the first core part of the first magnetic core or wound in a direction crossing a length direction of the first core part of the first magnetic core, and
 the second coil is wound lengthwise along the first core part of the second magnetic core or wound in a direction crossing a length direction of the first core part of the second magnetic core.   
     
     
         8 . The power supply apparatus of  claim 7 , wherein the first coil includes a plurality of first coils disposed on a plurality of regions, respectively, while being connected with each other in series, and
 the second coil includes a plurality of second coils disposed on a plurality of regions, respectively, while being connected with each other in series.   
     
     
         9 . The power supply apparatus of  claim 1 , wherein the third magnetic core comprises:
 a fourth core part;   a fifth core part vertically extending from one end of the fourth core part in a left direction;   a sixth core part vertically extending from one end of the fourth core part in a right direction;   a seventh core part vertically extending from an opposite end of the fourth core part in a left direction; and   an eighth core part vertically extending from the opposite end of the fourth core part in a right direction, and   the first and second magnetic cores are parallel to the fourth core part of the third magnetic core.   
     
     
         10 . The power supply apparatus of  claim 9 , wherein the first and second magnetic cores have a shape of ‘|’, and
 the third magnetic core has a shape of ‘H’. 
 
     
     
         11 . The power supply apparatus of  claim 9 , wherein the first coil is wound lengthwise along the first magnetic core or wound in a direction crossing a length direction of the first magnetic core, and
 the second coil is wound lengthwise along the second magnetic core or wound in a direction crossing a length direction of the second magnetic core.   
     
     
         12 . The power supply apparatus of  claim 9 , wherein the first coil is wound around one of the fifth and sixth core parts, and
 the second coil is wound around one of sixth and eighth core parts, which is symmetrical to the core part around which the first coil is wound.   
     
     
         13 . The power supply apparatus of  claim 12 , wherein the first coil includes a plurality of first coils disposed on a plurality of regions, respectively, while being connected with each other in series, and
 the second coil includes a plurality of second coils disposed on a plurality of regions, respectively, while being connected with each other in series.   
     
     
         14 . The power supply apparatus of  claim 9 , wherein the first and third magnetic cores are spaced apart from each other by a third air gap formed in at least one of between the first magnetic core and the fifth core part and between the first magnetic core and the seventh core part, and
 the second and third magnetic cores are spaced apart from each other by a fourth air gap formed in at least one of between the second magnetic core and the sixth core part and between the second magnetic core and the eighth core part.   
     
     
         15 . The power supply apparatus of  claim 14 , wherein the third air gap is formed in at least one of between a right side of the first magnetic core and a left side of the fifth core part and between the right side of the first magnetic core and a left side of the seventh core part, and
 the fourth air gap is formed in at least one of between a left side of the second magnetic core and a right side of the sixth core part and between the left side of the second magnetic core and the right side of the eighth core part.   
     
     
         16 . The power supply apparatus of  claim 14 , wherein the third air gap is formed in at least one of between a top surface of the first magnetic core and a bottom surface of the fifth core part and between a bottom surface of the first magnetic core and a top surface of the seventh core part, and
 the fourth air gap is formed in at least one of between a top surface of the second magnetic core and a bottom surface of the sixth core part and between a bottom surface of the second magnetic core and a top surface of the eighth core part.   
     
     
         17 . The power supply apparatus of  claim 1 , wherein the first and second magnetic cores have high permeability, and
 the third magnetic core has low permeability.   
     
     
         18 . The power supply apparatus of  claim 1 , wherein the first and second magnetic cores have low permeability, and
 the third magnetic core has high permeability.   
     
     
         19 . The power supply apparatus of  claim 1 , further comprising:
 a fourth magnetic core;   a fifth magnetic core;   a third coil wound around the fourth magnetic core; and   a fourth coil wound around the fifth magnetic core,   wherein the first magnetic core is formed in a first direction about the third magnetic core, the second magnetic core is formed in a second direction about the third magnetic core, the fourth magnetic core is formed in a third direction about the third magnetic core, and the fifth magnetic core is formed in a fourth direction about the third magnetic core.   
     
     
         20 . The power supply apparatus of  claim 19 , wherein the first, second, fourth, and fifth cores have a cross shape about the third magnetic core. 
     
     
         21 . The power supply apparatus of  claim 1 , wherein the first and second coils are inductor coils, and
 the power supply apparatus includes a couple inductor.   
     
     
         22 . The power supply apparatus of  claim 1 , wherein the first coil is a first transformer coil including a primary coil and a secondary coil,
 the second coil is a second transformer coil including a primary coil and a secondary coil, and   the power supply apparatus includes a couple transformer.   
     
     
         23 . The power supply apparatus of  claim 1 , wherein the first coil is an inductor coil,
 the second coil is a transformer coil including a primary coil and a secondary coil, and   the power supply apparatus includes a couple inductor-transformer.