Abstract: A stator, a motor, and an electric vehicle are provided. The stator includes: a housing, where the housing has an accommodation space, and an oil inlet is disposed on the housing; a ring-shaped iron core punching sheet, where the iron core punching sheet is disposed in the accommodation space, and abuts against an inner wall of the housing; a spacer sleeve, where the spacer sleeve is sleeved in the iron core punching sheet, an outer surface of the spacer sleeve abuts against a side that is of the tooth part and that faces away from the yoke part, and a slot opening of the stator slot fits with the spacer sleeve to form a third cooling channel; and a flow guiding assembly, where the flow guiding assembly is disposed in the accommodation space. The three-layer oil-injection cooling design can improve a heat dissipation capability of the stator.

Abstract: A displacement detector may include a substrate and a membrane having an inner surface facing the substrate. A mounting area may be arranged to fix the membrane along at least part of the perimeter of the membrane, wherein the mounting area, the inner surface and the substrate enclose a back volume. An acoustic compliance of the back volume may be arranged to be the same or larger than an acoustic compliance of the membrane. An optical sensor may be configured to generate a sensor signal indicative of a displacement of the membrane.

Abstract: A power assembly includes a power component and a shell. The shell includes an accommodating structure, a flow diversion structure, a liquid storage structure, a heat dissipation structure, and a heat exchange structure. The accommodating structure is filled with cooling liquid. The flow diversion structure is configured to guide a flow direction of the cooling liquid. The liquid storage structure is configured to store the cooling liquid that is guided by the flow diversion structure to enter the liquid storage structure, and to distribute the cooling liquid that enters the liquid storage structure. The heat dissipation structure is configured to receive the cooling liquid distributed by the liquid storage structure, and to transfer the cooling liquid to the power component to cool the power component. The heat exchange structure is configured to perform heat exchange and cooling on the cooling liquid in the accommodating structure.

Abstract: A stator includes a stator core and a seal kit. The stator core includes a yoke part and a plurality of tooth parts. A tooth root of the tooth part is connected to the yoke part. A tooth top of the tooth part is away from the yoke part. An opening slot is formed between two adjacent tooth parts. The opening slot includes a coil slot and a flow passing slot that communicate with each other. The coil slot extends from the tooth top to the tooth root. The coil slot is configured to accommodate a stator coil. The flow passing slot extends from the tooth root to the yoke part. The seal kit is connected to an inner wall of the opening slot. The seal kit and the inner wall of the flow passing slot jointly form a flow passing passage for a coolant to flow through.

Abstract: A motor, a powertrain, and a device. A plurality of first oil channels are formed between an inner surface of a housing and an outer surface of a stator core, second oil channels are formed at groove roots of coil slots of the stator core, to form double-layer oil channels at the outer surface of the stator core and the root of the coil slot of the stator core, and ensure effective cooling of the stator core and a coil winding. After cooling oil is injected from an oil filling port, a flow direction of the cooling oil in some of the second oil channels is opposite to that of cooling oil in a remaining second oil channel, so that interleaved reverse flows are implemented, and axial temperature of the stator core and the coil winding is more even.

Abstract: This disclosure discloses image sensors, signal processing methods, and related devices for image processing. An example image sensor comprises an optical filter array. The optical filter array is a hyper spectral or multispectral optical filter array and comprises m optical filters and an optical-to-electrical conversion module. The optical-to-electrical conversion module comprises an optical-to-electrical conversion unit and a combining unit. The m optical filters are configured to obtain optical signals of a target object in at least two different spectral bands. The optical-to-electrical conversion unit is configured to convert the optical signals obtained by the m optical filters into electrical signals. The combining unit is configured to combine the electrical signals corresponding to the m optical filters to obtain a combined electrical signal. The optical-to-electrical conversion module is configured to output the combined electrical signal, which is used to generate an image of the target object.

Abstract: A power assembly includes a rotor iron core, a gear set, a rotating shaft, and an oil-pumping system. The rotating shaft is fixedly connected to the rotor iron core and a driving gear in the gear set. The housing has an oil storage pool at a bottom and an oil collection tank at a high location, a part of a structure of a first gear in the gear set is located in the oil storage pool, and the first gear rotates to drive cooling oil in the oil storage pool to be raised and collected by the oil collection tank. The rotating shaft has a cooling oil channel inside. The cooling oil in the oil collection tank flows to the cooling oil channel, to dissipate heat from the rotor iron core.