公开(公告)号：US20160183754A1

公开(公告)日：2016-06-30

申请号：US14977947

申请日：2015-12-22

Applicant: LG ELECTRONICS INC.

Inventor： Hoyong JANG ,  Seokhee CHO ,  Dukho HAM

IPC: A47L9/28 ,  H02J7/00

CPC classification number: A47L9/2884 ,  A47L9/2842 ,  H02J7/0031 ,  H02J7/0063 ,  H02J7/007 ,  H02J2007/004 ,  H02J2007/0067

Abstract: Provided is a battery discharge control system including a voltage sensor configured to sense a voltage across a battery and a controller configured to calculate an expected voltage based on a recovery voltage of the battery and the voltage across the battery, compare the expected voltage and a predetermined final discharge voltage, and determine whether to apply power to a load having the battery as a power source.

Abstract translation: 提供一种电池放电控制系统，包括：电压传感器，被配置为感测电池两端的电压;以及控制器，被配置为基于电池的恢复电压和电池两端的电压来计算期望电压，将预期电压和预定电压进行比较 最终放电电压，并确定是否对具有电池的负载作为电源施加电力。

公开(公告)号：US20160213218A1

公开(公告)日：2016-07-28

申请号：US15009315

申请日：2016-01-28

Applicant: LG ELECTRONICS INC.

Inventor： Dukho HAM ,  Hoon CHOI ,  Seokhee CHO

IPC: A47L11/40

CPC classification number: A47L11/4005 ,  A47L5/362 ,  A47L9/2884 ,  A47L11/4008

Abstract: A vacuum cleaner may include: a cleaner body having a suction motor; a suction unit in communication with the cleaner body and to suction air and dust; a battery; a battery management system configured to detect a state of the battery; a charger configured to apply a charging current to the battery and thus to charge the battery; a body connector to which a charging connector for supplying commercial power to the cleaner body is able to be separably connected; and a controller configured to control charging of the battery. The controller may attempt charging of the battery when it is detected that the charging connector is connected to the body connector, and the controller may reattempt the charging of the battery when the charging of the battery is not normally performed.

Abstract translation: 真空吸尘器可以包括：具有抽吸马达的吸尘器本体; 抽吸单元与吸尘器主体连通并吸入空气和灰尘; 一个电池 电池管理系统，被配置为检测所述电池的状态; 充电器，被配置为向电池施加充电电流，从而对电池充电; 用于向吸尘器主体供应商业电力的充电连接器能够可分离地连接的主体连接器; 以及配置为控制电池的充电的控制器。 当检测到充电连接器连接到主体连接器时，控制器可以尝试对电池充电，并且当电池的充电不正常地执行时，控制器可能会重新尝试对电池的充电。

公开(公告)号：US20200162008A1

公开(公告)日：2020-05-21

申请号：US16629267

申请日：2018-07-05

Applicant: LG Electronics Inc.

Inventor： Hansu JUNG ,  Seokhee CHO ,  Jungmoon JE

IPC: H02P27/12 ,  H02P21/18 ,  H02P21/22 ,  H02P21/36

Abstract: The present invention relates to a motor drive apparatus and, more particularly, to a motor drive apparatus capable of immediately restarting by maintaining sensorless control during a stop operation of a motor. The motor drive apparatus comprises: an inverter for driving a motor by using an AC voltage; and a control unit for controlling operations of a switching element included in the inverter. At this time, when a stop command is input, the control unit decreases a duty ratio of a PWM signal until a present speed of the motor becomes smaller than a predetermined minimum speed, thereby decreasing the revolutions per minute of the motor. Then, when a restart command is input in a state where the duty ratio of the PWM signal is decreased, the control unit can immediately restart the motor by increasing the duty ratio of the PWM signal.

公开(公告)号：US20210207304A1

公开(公告)日：2021-07-08

申请号：US16073444

申请日：2017-01-24

Applicant: LG Electronics Inc.

Inventor： Seongwoo KIM ,  Younghan CHO ,  Seokhee CHO

IPC: D06F33/34 ,  D06F34/18

Abstract: The present invention relates to a method for controlling a laundry machine, comprising a cloth sensing step of sensing the cloth of laundry, wherein the cloth sensing step comprises: a weight sensing step of sensing the weight of the laundry; a photographing step of photographing the inside of a drum; a volume sensing step of sensing the volume of the laundry inside the drum by mean of the captured image; and a density calculation step of calculating the density of the laundry on the basis of the sensed volume and weight.

公开(公告)号：US20200169202A1

公开(公告)日：2020-05-28

申请号：US16620432

申请日：2018-06-05

Applicant: LG Electronics Inc.

Inventor： Kwang Sik KIM ,  Chungill LEE ,  Seokhee CHO

IPC: H02P21/00 ,  H02P27/08 ,  H02P27/16 ,  H02P21/18 ,  H02P21/20 ,  H02P21/22 ,  H02M7/49

Abstract: The present invention relates to a motor driving apparatus and, more specifically, to a motor driving apparatus for selectively performing identical phase overmodulation compensation or minimum distance overmodulation compensation according to a command speed when an output voltage command value of an inverter indicates an overmodulation voltage.

公开(公告)号：US20170054394A1

公开(公告)日：2017-02-23

申请号：US15238894

申请日：2016-08-17

Applicant: LG ELECTRONICS INC.

Inventor： Hansu JUNG ,  Hoyong JANG ,  Seokhee CHO

IPC: H02P21/18 ,  H02P6/24 ,  H02P27/06 ,  H02P6/20

CPC classification number: H02P21/18 ,  D06F25/00 ,  H02P3/22 ,  H02P6/20 ,  H02P6/24 ,  H02P27/06

Abstract: Disclosed herein are a motor driving apparatus and a home appliance including the same. The motor driving apparatus includes a direct current (DC) link capacitor, an inverter, a DC link voltage detector, and a controller. The controller controls rheostatic braking to be performed in order to stop the motor, performs bootstrap operation of gate terminals of the upper arm switching elements of the inverter during a first period for starting the motor, and determines whether the motor stops during the first period based on the DC voltage detected by the DC link voltage detector or the output current detected by the output current detector. Accordingly, it is possible to conveniently determine whether the motor stops in the sensorless type motor driving apparatus.

Abstract translation: 这里公开了一种电动机驱动装置和包括其的家用电器。 电动机驱动装置包括直流（DC）连杆电容器，逆变器，直流链路电压检测器和控制器。 控制器控制要进行的变阻器制动以停止电动机，在起动电动机的第一时段期间对变频器的上臂开关元件的栅极端子进行自举操作，并且确定电动机在第一时段期间是否停止 由直流链路电压检测器检测到的直流电压或由输出电流检测器检测到的输出电流。 因此，可以方便地确定电动机是否在无传感器型电动机驱动装置中停止。