Direct current motor

A direct current motor, connected to at least one direct current power supply, characterized by comprising:

• a casing;
• m pairs of brushes fixed within the casing;
• a stator provided within the casing, including m main poles corresponding to the m pairs of brushes, and n field winding parts;
• and
• a rotor provided within the stator, including a plurality of armature windings in a predetermined connection,
• wherein each pair of main poles includes an S-polarity main pole and an N-polarity main pole,
• each pair of brushes includes an S-pole corresponding brush corresponding to the S-polarity main pole, and an N-pole corresponding brush corresponding to the N-polarity main pole,
• the field winding part includes k field winding units,
• each field winding unit is made up of field coils formed by winding an insulated conductor strip, which is made of a metal wire coated with an insulating layer, around the m pairs of main poles,
• m is a positive integer not less than 2, n is 1 or 2, and k is a positive integer not less than 2,
• when n is 1 and k=m, the insulated conductor strip of each field winding unit has one end and the other end,
• all the one ends of the insulated conductor strips are electrically connected to all the S-pole corresponding brushes in the brushes to form first external wiring terminals, while all the other ends are electrically connected to all the N-pole corresponding brushes in the brushes to form second external wiring terminals;
• or, all the one ends of the insulated conductor strips are electrically connected to all the N-pole corresponding brushes in the brushes to form first external wiring terminals, while all the other ends are electrically connected to all the S-pole corresponding brushes in the brushes to form second external wiring terminals, and
• the m first external wiring terminals and the m second external wiring terminals are for electrical connection to two electrodes of the direct current power supply, respectively.

A direct current motor, connected to at least one direct current power supply, characterized by comprising:

• a casing;
• m pairs of brushes fixed within the casing;
• a stator provided within the casing, including m main poles corresponding to the m pairs of brushes, and n field winding parts;
• and
• a rotor provided within the stator, including a plurality of armature windings in a predetermined connection,
• wherein each pair of main poles includes an S-polarity main pole and an N-polarity main pole,
• each pair of brushes includes an S-pole corresponding brush corresponding to the S-polarity main pole, and an N-pole corresponding brush corresponding to the N-polarity main pole,
• the field winding part includes k field winding units,
• each field winding unit is made up of field coils formed by winding an insulated conductor strip, which is made of a metal wire coated with an insulating layer, around the m pairs of main poles,
• m is a positive integer not less than 2, n is 1 or 2, and k is a positive integer not less than 2,
• when n is 2 and k=m, the stator includes a series field winding part and a shunt field winding part,
• the series field winding part includes m series field winding units,
• the shunt field winding part includes m shunt field winding units,
• each series field winding unit is made up of series field coils made with the insulated conductor strip,
• each shunt field winding unit is made up of shunt field coils made with the insulated conductor strip,
• the insulated conductor strip of each series field winding unit has one series end and the other series end,
• the insulated conductor strip of each shunt field winding unit has one shunt end and the other shunt end,
• all the one ends of the insulated conductor strips are electrically connected to all the S-pole corresponding brushes in the brushes;
• or, all the one ends of the insulated conductor strips are electrically connected to all the N-pole corresponding brushes in the brushes,
• the m one series ends of the series field winding units serve as m first external wiring terminals for electrical connection to one electrode of the external direct current power supply,
• the m brushes, which are not connected with the one series ends of the series field winding units, are individually provided with wiring terminals serving as m second external wiring terminals for electrical connection to the other electrode of the external direct current power supply, and
• the m one shunt ends of the shunt field winding units are electrically connected to the m first external wiring terminals, while the m the other shunt ends are electrically connected to the m second external wiring terminals;
• or, the m one shunt ends of the shunt field winding units are electrically connected to the m second external wiring terminals, while the m the other shunt ends are electrically connected to the m first external wiring terminals.

A direct current motor, connected to at least one direct current power supply, characterized by comprising:

• a casing;
• m pairs of brushes fixed within the casing;
• a stator provided within the casing, including m main poles corresponding to the m pairs of brushes, and n field winding parts;
• and
• a rotor provided within the stator, including a plurality of armature windings in a predetermined connection,
• wherein each pair of main poles includes an S-polarity main pole and an N-polarity main pole,
• each pair of brushes includes an S-pole corresponding brush corresponding to the S-polarity main pole, and an N-pole corresponding brush corresponding to the N-polarity main pole,
• the field winding part includes k field winding units,
• each field winding unit is made up of field coils formed by winding an insulated conductor strip, which is made of a metal wire coated with an insulating layer, around the m pairs of main poles,
• m is a positive integer not less than 2, n is 1 or 2, and k is a positive integer not less than 2,
• when n is 2 and k=m, the stator includes a series field winding part and a shunt field winding part,
• the series field winding part includes m series field winding units,
• the shunt field winding part includes m shunt field winding units,
• each series field winding unit is made up of series field coils made with the insulated conductor strip,
• each shunt field winding unit is made up of shunt field coils made with the insulated conductor strip,
• the insulated conductor strip of each series field winding unit has one series end and the other series end,
• the insulated conductor strip of each shunt field winding unit has one shunt end and the other shunt end,
• all the one series ends of the series field winding units are electrically connected to all the S-pole corresponding brushes in the brushes to form joint points;
• or, all the one series ends of the series field winding units are electrically connected to all the N-pole corresponding brushes in the brushes to form joint points,
• the m the other series ends of the series field winding units serve as m first external wiring terminals for electrical connection to one electrode of the external direct current power supply, the m brushes, which are not connected with the one series ends of the series field winding units, are individually provided with wiring terminals serving as m second external wiring terminals for electrical connection to the other electrode of the external direct current power supply, and
• the m one shunt ends of the shunt field winding units are electrically connected to the m second external wiring terminals, while the m the other shunt ends are electrically connected to the electrical joint points of the m series field winding units and the brushes;
• or, the m the other shunt ends of the shunt field winding units are electrically connected to the m second external wiring terminals, while the m one shunt ends are electrically connected to the electrical joint points of the m series field winding units and the brushes.

A direct current motor, connected to at least one direct current power supply, characterized by comprising:

• a casing;
• m pairs of brushes fixed within the casing;
• a stator provided within the casing, including m main poles corresponding to the m pairs of brushes, and n field winding parts;
• and
• a rotor provided within the stator, including a plurality of armature windings in a predetermined connection,
• wherein each pair of main poles includes an S-polarity main pole and an N-polarity main pole,
• each pair of brushes includes an S-pole corresponding brush corresponding to the S-polarity main pole, and an N-pole corresponding brush corresponding to the N-polarity main pole,
• the field winding part includes k field winding units,
• each field winding unit is made up of field coils formed by winding an insulated conductor strip, which is made of a metal wire coated with an insulating layer, around the m pairs of main poles,
• m is a positive integer not less than 2, n is 1 or 2, and k is a positive integer not less than 2,
• the direct current power supply includes at least one first direct current power supply and at least one second direct current power supply,
• when n is 1, the insulated conductor strip of each field winding unit has one end and the other end,
• all the S-pole corresponding brushes or all the N-pole corresponding brushes are individually provided with wiring terminals serving as m first external wiring terminals for electrical connection to one electrode of the first direct current power supply,
• the rest of the brushes, which are not electrically connected with the first external wiring terminals, are individually provided with wiring terminals serving as m second external wiring terminals for electrical connection to the other electrode of the first direct current power supply,
• all the one ends of the insulating conductor strips serve as k third external wiring terminals for electrical connection to the one electrode of the second direct current power supply, and
• all the other ends of the insulated conductor strips serve as k fourth external wiring terminals for electrical connection to the other electrode of the second direct current power supply.