Abstract: The present disclosure relates to a method for producing a negative electrode material for a secondary battery having excellent electrochemical performance by using a silicon oxide with a low oxygen content, and a negative electrode material for a secondary battery produced by the method, a secondary battery, wherein the method comprises a gel-forming step of introducing SiCl4 and then ethylene glycol into a reactor at a temperature of 0° C. to 25° C. under an inert atmosphere to form a gel; a preheating step of heating the gel to a temperature of 200° C. to 500° C.; and a heat treatment step of heating the gel subjected to the preheating step to a temperature of 500° C. to 1100° C. to form a silicon oxide.

Abstract: Disclosed herein are a motor assembly and a cleaner having the same. The motor assembly includes a rotor configured to rotate and a stator configured to electromagnetically interact with the rotor. The stator includes a pair of stator bodies disposed to be symmetrical to each other with the rotor in between, each stator body having at least two stator cores arranged in parallel to each other.

Abstract: Disclosed herein are a rotor and a method of manufacturing the rotor. The rotor includes a rotor assembly including magnets and rotor cores, and a molding unit including a first molding unit disposed by being firstly injection molded to support the rotor assembly before the magnets are magnetized and a second molding unit disposed by being secondly injection molded to support the rotor assembly after the magnets are magnetized.

Abstract: A motor assembly having an internal channel passing an interior of a rotor, and a method for producing the same are provided. The motor assembly includes an adhesive flowing along the internal channel, and the rotor can be firmly coupled and improving durability and production efficiency of the rotor.

Abstract: The present invention provides a motor and a washing machine including the same. The motor according to an embodiment of the present invention includes a hall sensor which is positioned on the upper surface of a rotor and detects the position of a magnet provided in the rotor by using the leakage magnetic flux of the magnet, and thereby can accurately detect the position of the rotor by the hall sensor.

Abstract: Disclosed herein are a motor assembly and a cleaner having the same. The motor assembly includes a rotor configured to rotate and a stator configured to electromagnetically interact with the rotor. The stator includes a pair of stator bodies disposed to be symmetrical to each other with the rotor in between, each stator body having at least two stator cores arranged in parallel to each other.

Abstract: Disclosed herein is a washing machine having an improved structure that maintains efficiency over a certain level both in washing and dehydration. The washing machine includes a body, a tub disposed within the body, a drum rotatably disposed within the tub, and a motor coupled to a rear surface of the tub to drive the drum. The motor includes a stator including a plurality of stator cores and a plurality of magnets arranged between the stator cores, and a rotor rotatably disposed at an inner side or outer side of the stator.

Abstract: A motor includes an enhanced strength of a stator, the stator being formed with a plurality of core plates stacked one on top of another, and a rotor rotatably disposed at an inner side or at an outer side of the stator. Each core plate includes a body provided in a shape of an arc, a plurality of teeth radially extended from the body, and having a coil wound thereto, at least one first slit part formed on the body by being slit in a radial direction of the body, and at least one second slit part formed on the body by being slit in a circumferential direction of the body.

Abstract: A motor realizes mechanical field-weakening control by controlling the leakage magnetic flux from the rotor cores of the motor. The motor includes a stator, a rotor including rotor cores circumferentially spaced apart from one another inside the stator and permanent magnets disposed between the respective rotor cores which extend radially from the stator, and a magnetic flux adjustment unit including a ring-shaped main frame, magnetic substance portions extending from the main frame so as to be circumferentially spaced apart from one another and non-magnetic regions defined between the magnetic substance portions. The magnetic flux adjustment unit is rotatable to control the leakage magnetic flux from the rotor cores.

Abstract: A motor having a structure capable of achieving an enhancement in durability and a washing machine, to which the motor is applied. The motor includes a stator including a plurality of stator cores arranged in a circumferential direction, and coils respectively wound around the stator cores, and a rotor rotatably arranged inside or outside the stator. The rotor includes a plurality of rotor cores arranged in a circumferential direction of the rotor, a plurality of magnets each disposed between neighboring ones of the rotor cores, a molded body having a bridge to support the plurality of rotor cores and the plurality of magnets, and a coupler including coupling ribs outwardly extending from an outer circumferential surface of the bridge in a radial direction of the rotor, and coupling grooves formed at inner ends of the rotor cores supported by the bridge, to receive the coupling ribs, respectively.

Abstract: The present invention provides a motor and a washing machine including the same. The motor according to an embodiment of the present invention includes a hall sensor which is positioned on the upper surface of a rotor and detects the position of a magnet provided in the rotor by using the leakage magnetic flux of the magnet, and thereby can accurately detect the position of the rotor by the hall sensor.

Abstract: Disclosed herein are a rotor and a method of manufacturing the rotor. The rotor includes a rotor assembly including magnets and rotor cores, and a molding unit including a first molding unit disposed by being firstly injection molded to support the rotor assembly before the magnets are magnetized and a second molding unit disposed by being secondly injection molded to support the rotor assembly after the magnets are magnetized.

Abstract: A motor having a structure capable of achieving a reduction in magnetic flux leakage occurring at a rotor and a washing machine, to which the motor is applied. The motor includes a stator including a plurality of stator cores arranged in a circumferential direction, and coils respectively wound around the stator cores, and a rotor rotatably arranged inside the stator. The rotor includes a plurality of rotor cores arranged in a circumferential direction of the rotor, a plurality of magnets each disposed between neighboring ones of the rotor cores such that the magnet extends in an axial direction of the rotor outwardly of upper and lower surfaces of the neighboring rotor cores, and a molded body to support the plurality of rotor cores and the plurality of magnets. The molding body includes a shaft hole, to which a motor shaft is coupled.

Abstract: A motor includes a stator and a rotor rotatably disposed at an inside or outside of the stator. The rotor includes a plurality of rotor cores radially disposed, a plurality of magnets respectively disposed between the rotor cores, a molding to support the rotor cores and the magnets and define an accommodation space to accommodate an inner magnetizing yoke to magnetize the magnets, and a gap maintaining portion formed at at least one section of an inner circumferential surface of the molding in order to maintain a gap between an outer circumferential surface of the inner magnetization yoke and inner circumferential surfaces of the rotor cores between about 2 mm and about 5 mm when the inner magnetization yoke is accommodated in the accommodation space to magnetize the magnets.

Abstract: A motor having a structure that enhances durability of the motor. The motor includes a stator and a rotor rotatably disposed at an inside outside of the stator. The rotor includes a plurality of rotor cores radially disposed and a plurality of magnets respectively disposed between rotor cores. The area of a lateral surface of each of the magnets adjoining a lateral surface of a corresponding one of the rotor cores is greater than the area of an imaginary plane connecting one end of an upper end portion of each of the magnets to one end of a lower end portion of each of the magnets.

Abstract: A motor may adjust interlinkage magnetic flux of a rotor and a stator so as to rotate at high speed by lowering torque during a dehydration operation of a washing machine. The motor includes a rotor in which a plurality of magnets and a plurality of rotor cores are alternately arranged in a circumferential direction of the rotor, the plural magnets being magnetized in the circumferential direction so that the same polarities thereof face each other, a stator around which a coil is wound, and a magnetic flux adjustment member to adjust interlinkage magnetic flux of the rotor and the stator by adjusting leakage magnetic flux. The magnetic flux adjustment member includes a ring-shaped variable magnetic substance, and a pressing member which presses the magnetic substance and varies the shape thereof.

Abstract: Disclosed herein is a washing machine having an improved structure that maintains efficiency over a certain level both in washing and dehydration. The washing machine includes a body, a tub disposed within the body, a drum rotatably disposed within the tub, and a motor coupled to a rear surface of the tub to drive the drum. The motor includes a stator including a plurality of stator cores and a plurality of magnets arranged between the stator cores, and a rotor rotatably disposed at an inner side or outer side of the stator.

Abstract: A motor having a structure capable of achieving an enhancement in durability and a washing machine, to which the motor is applied. The motor includes a stator including a plurality of stator cores arranged in a circumferential direction, and coils respectively wound around the stator cores, and a rotor rotatably arranged inside or outside the stator. The rotor includes a plurality of rotor cores arranged in a circumferential direction of the rotor, a plurality of magnets each disposed between neighboring ones of the rotor cores, a molded body having a bridge to support the plurality of rotor cores and the plurality of magnets, and a coupler including coupling ribs outwardly extending from an outer circumferential surface of the bridge in a radial direction of the rotor, and coupling grooves formed at inner ends of the rotor cores supported by the bridge, to receive the coupling ribs, respectively.

Abstract: A motor having a structure capable of achieving a reduction in magnetic flux leakage occurring at a rotor and a washing machine, to which the motor is applied. The motor includes a stator including a plurality of stator cores arranged in a circumferential direction, and coils respectively wound around the stator cores, and a rotor rotatably arranged inside the stator. The rotor includes a plurality of rotor cores arranged in a circumferential direction of the rotor, a plurality of magnets each disposed between neighboring ones of the rotor cores such that the magnet extends in an axial direction of the rotor outwardly of upper and lower surfaces of the neighboring rotor cores, and a molded body to support the plurality of rotor cores and the plurality of magnets. The molding body includes a shaft hole, to which a motor shaft is coupled.

Abstract: An apparatus for magnetizing magnets provided among a plurality of cores of a motor of a washing machine and a method thereof, is capable of fully magnetizing a magnet forming a rotor and including a plurality of teeth disposed around two cores of the plurality of cores, the two cores being laterally provided while interposing one of the magnets therebetween, and a coil being provided around the plurality of teeth to form a magnetic flux to magnetize the one magnet interposed between the two cores laterally provided.