Abstract: A consequent-pole motor comprises a rotor and a stator sleeved outside the rotor. The rotor comprises a plurality of permanent magnetic poles evenly spaced along a circumferential direction of the rotor. A plurality of stator teeth is disposed on an inner periphery of the stator along a circumferential direction of the inner periphery. A permanent magnetic pole of the rotor comprises a first permanent magnet mounting groove and a second permanent magnet mounting groove disposed sequentially from outside to inside along a radial direction of the rotor. A first layer permanent magnet is disposed in the first permanent magnet mounting groove, and a second layer permanent magnet is disposed in the second permanent magnet mounting groove. According to the motor, permanent magnets distributed in multiple layers are used, so that the magnetic resistance torque of the motor can be improved, which may increase reluctance torque, thereby increasing electromagnetic torque.

Abstract: The disclosure provides a defrosting control method and device and a multi-split air conditioner. The defrosting control method including: controlling the multi-split air conditioner to enter a continuous heating and defrosting mode under a condition that any external unit meets the preset defrosting condition; detecting sequentially whether the each external unit in the multi-split air conditioner is currently in a frostless state; marking directly a currently detected external unit as having finished defrosting under a condition that the currently detected external unit is currently in a frostless state; defrosting the currently detected external unit under a condition that the currently detected external unit is currently in a frosted state, and marking the currently detected external unit as having finished defrosting after defrosting; and controlling the multi-split air conditioner to exit the mode under a condition that all the external units are marked as having finished defrosting.

Abstract: The present disclosure relates to a motor rotor, a permanent magnet motor, and an electric vehicle. The motor rotor includes a rotor core (1) and permanent magnets (3). The rotor core (1) includes mounting slots (2). The permanent magnets (3) are arranged in the mounting slots (2). An included angle between two mounting slots (2) forming a V-shaped structure in the mounting slots (2) is ?. A numerical value of a thickness of the permanent magnets (3) is L4 when a unit thereof is mm. A numerical value of a width of the permanent magnets (3) is L5 when a unit thereof is mm. 110°???140°. A numerical value of ?=(18 to 20)*L4, L5?2*L4.

Abstract: A water chiller, a water output adjustment method, and an air conditioning system. The water chiller includes: at least two cooling towers used in parallel, a water pressure balance adjustment circuit, and a main control hoard, where each of the at least two cooling towers includes a water pressure pre-adjustment circuit, the main control board is configured to control the water pressure pre-adjustment circuit to realize real-time water output adjustment of the each of the at least two cooling towers, and control the water pressure balance adjustment circuit to achieve a water output balance adjustment among-multiple cooling towers.

Abstract: The present disclosure provides a rotor structure, an electric motor and a rotor manufacturing method. The rotor structure includes a plurality of rotor sheets (100) and a rotating shaft. The rotor sheets (100) are stacked in sequence along an axial direction of the rotor structure. Each of the rotor sheets (100) is provided with a shaft hole (20), a first slot (111), and first filling slots (121) at both ends of the first slot (111). The first slot (111) extends in a direction of a direct axis (3) of the rotor structure and includes slot sections (1110) at opposite sides of the shaft hole (20). The rotating shaft passes through the shaft hole (20) of the plurality of rotor sheets (100). The first slot (111), the first filling slots (121) and the rotating shaft form a first flux barrier layer (101).

Abstract: The disclosure discloses a reservation method and apparatus for an electronic device for improving reservation accuracy, wherein the reservation method includes: receiving a reservation instruction sent by a terminal device, wherein the reservation instruction carries identification information, an operation content, and an execution time of the electronic device; obtaining a current time from a clock source and starts timing, and obtaining a target reference time, wherein the clock source is a clock source of the terminal device, a network device, or the reservation apparatus, and the target reference time is configured to indicate the time after timing; and if determining that a difference value between the target reference time and the execution time is less than values within a preset range, controlling the electronic device to execute the reservation instruction.

Abstract: Disclosed are an on-grid/off-grid scheduling method and apparatus, and an energy storage power supply system. The method is applied to the system. The system includes an energy storage device; the energy storage device is connected to a direct current bus; one end of the direct current bus is connected to a power grid by means of an AC-DC module, and the other end is connected to a load. The method includes: after the energy storage device enters an off-grid operation mode, controlling an output voltage of the energy storage device to decrease once every first preset duration; and every time the output voltage of the energy storage device is controlled to decrease, obtaining an input voltage change situation of the load, and determining, according to the input voltage change situation of the load, whether to control the energy storage device to switch to an on-grid operation mode.

Abstract: A self-starting synchronous reluctance compressor and a refrigeration device system. The self-starting synchronous reluctance compressor includes a cylinder, a flange, a muffling cover, and a motor. The motor comprises a motor rotor. The flange is connected to the cylinder, and the muffling cover is arranged on the flange. A muffling cavity is formed between the muffling cover and the flange, and at least one exhaust port is disposed in the muffling cover. Multiple layers of rotor slots are arranged on the motor rotor, and at least part of the rotor slots axially penetrates the motor rotor. A total cross-sectional area of the at least part of the rotor slots axially penetrating the motor rotor is Sx, and a total cross-sectional area of the at least one exhaust port is Ss, and it is satisfied that Sx>Ss.

Abstract: A positioning method includes: obtaining an integrated signal strength and a first-path signal strength; obtaining an initial distance value between a sending device and a receiving device, and initial position information of the sending device; determining a correction distance value according to the integrated signal strength and the first-path signal strength, and correcting the initial distance value by using the correction distance value, to obtain a target distance value; and correcting the initial position information according to the target distance value, to obtain target position information.

Abstract: A cleaning method for a cleaning device includes: acquiring a grid map of a region to be cleaned; dividing a passable region in the grid map into a plurality of candidate regions; screening the plurality of candidate regions; prioritizing a plurality of screened candidate regions, and corresponding the plurality of screened candidate regions with different priorities to different cleaning parameters; and cleaning the plurality of screened candidate regions according to priority sorting, the cleaning parameters include at least one of a cleaning frequency, cleaning time, cleaning agent addition information and a cleaning mode. Adopting the cleaning method for the cleaning device effectively solves problems in that cleaning efficiency of a robot vacuum cleaner is relatively low in related technologies.

Abstract: A fault processing method for a displacement sensor includes: receiving a plurality of detected signals from a plurality of detecting probes and a given signal of a spare probe, wherein the detecting probes are configured to detect a displacement value of a rotation shaft of a magnetic levitation motor to obtain the detected signals, and the spare probe is configured to replace a faulty probe among the plurality of detecting probes; determining whether there is a faulty probe among the plurality of detecting probes based on the plurality of detected signals and the given signal; and connecting the given signal of the spare probe to the faulty probe corresponding to a case that a determination result is yes.

Abstract: Disclosed are an icon arrangement method, an icon arrangement apparatus, a user terminal, and a storage medium. The method includes: determining a target interface; determining at least one first icon in the target interface and an arrangement position of each first icon in the target interface; determining, from a plurality of second icons on the user terminal, a target icon matching the first icon; determining a target position, corresponding to the target icon, in an interface of the user terminal based on the arrangement position corresponding to the first icon that matches the target icon; and arranging the target icon in the interface of the user terminal based on the target position. In this way, automatic arrangement of icons in the interface of the user terminal can be achieved, thereby improving user experience.

Abstract: A control method of an air conditioner, includes: acquiring a temperature of injected vapor and a pressure of the injected vapor of a compressor of the air conditioner, to obtain a superheat degree of the injected vapor of the compressor of the air conditioner and a continuous duration of the superheat degree of the injected vapor; if the continuous duration is greater than or equal to a first preset value, and if an exhaust temperature of the compressor is less than a critical value of the exhaust temperature of the compressor within the continuous duration, controlling the compressor to be in a shutdown state, and if the continuous duration is less than the first preset value, and if the exhaust temperature of the compressor is less than the critical value of the exhaust temperature of the compressor within the continuous duration, controlling the compressor to remain in an operating state.

Abstract: A room area acquisition method includes: setting a room area initial value according to an air conditioner model parameter; acquiring a stable operation duration and a number of stop times of an air conditioner outdoor unit from starting up and stable operation to stopping at a temperature point; estimating a deviation between the room area initial value and a room area actual value according to the stable operation duration and the number of stop times, and outputting a deviation result; adjusting the room area initial value according to the deviation result, and performing estimation again according to an adjusted room area value; and taking the current room area value as the room area actual value when a deviation result output by current estimation is different from a deviation result output by last estimation.

Abstract: This application provides a method and an apparatus for establishing a scene. The method for establishing the scene includes: receiving current state information of all devices in a target folder sent by a terminal, and the target folder is a set of devices that support scene establishment; establishing a target scene according to the current state information; and sending state information corresponding to the target scene to the terminal, and the state information corresponding to the target scene is locally pre-stored according to user demands.

Abstract: Disclosed are a method, a device and a computer-readable storage medium for registration and login. The method includes: receiving, on a registration device side, registration information used to register a first object; performing a registration operation corresponding to the first object according to the registration information; sending the registration information to a login device that subscribes to the registration information in advance after the registration operation is successful; receiving, on a login device side, the registration information used to successfully register the first object sent by a registration device; receiving login information used to login a second object; and performing a login operation corresponding to the second object if it is determined that the login information has not been used to register the second object and the login information matches the registration information sent by the registration device.

Abstract: A purifying device, including: an air guiding part provided with an air passage, a negative ion generator, and an air guiding cover. The negative ion generator includes an emitting head, and the emitting head is arranged to face the air passage. The air guiding part is provided with a first position limiting structure disposed on an inner wall of the air passage, and the first position limiting structure is provided with a position limiting groove configured to receive the emitting head. The air guiding cover is arranged on a top of the inner wall of the air passage and configured to press and cover the position limiting groove, and the inner wall of the air passage is configured to support the air guiding cover.

Abstract: A single-phase permanent magnet synchronous motor and dust collector. The single-phase permanent magnet synchronous motor includes a plurality of stator teeth, the plurality of stator teeth include at least: a first-type and second-type stator tooth; the first-type and second-type stator teeth enclose an annular working cavity for accommodating a rotor part, where the size of a central angle corresponding to a first contour line of an end face of the first-type stator tooth facing the rotor part is different from the size of a central angle corresponding to a second contour line of an end face of the second-type stator tooth facing the rotor part. The motor has a significantly reduced cogging torque, a greatly reduced torque ripple, and an obviously increased motor output torque. The single-phase permanent magnet synchronous motor is small in size, light in weight, simple in structure, convenient for large-scale manufacture and low in manufacturing cost.

Abstract: The present disclosure provides a current transformer, a method for distributing electric energy using the same, and an electric energy distribution system, and relates to the technical field of household appliances. The method includes: calculating distribution coefficients of energy required for loads according to the number of the loads and rated energy demands of the respective loads; acquiring energy demand ranges of the loads; and distributing energy to the loads according to the energy demand ranges and the distribution coefficients based on energy of a power supply end.

Abstract: A rotor assembly, a compressor and an air conditioner. The rotor assembly includes a first rotor, including a first working portion and a second working portion coaxially arranged, the first working portion and the second working portion are rotatable about a first axis; the first working portion includes a plurality of first helical blades, with a first blade groove being formed between adjacent two of the plurality of first helical blades; at least one first air pressure groove is provided on a first end face of the first working portion away from the second working portion.