Abstract: A dual-motor drive assembly and a vehicle are disclosed. The dual-motor drive assembly comprises a first motor and a second motor arranged coaxially, a first gear transmission, a second gear transmission, and one or more idle gear pairs. The first gear transmission is driven by the first motor, and the second gear transmission is driven by the second motor. The idle gear pairs are respectively arranged in the first gear transmission and the second gear transmission and are configured to increase a distance between an output shaft of the first motor and an end shaft of the first gear transmission.

Abstract: The present disclosure belongs to the field of energy materials, and relates to a preparation method of a solid electrolyte, in particular to a method for forming a membrane by using an electrolyte to activate a porous powder material prepared by in-situ polymerization of a polymer on the surfaces of cellulose nanocrystals, and then hot-pressing. According to the technical solution of the present disclosure, cellulose nanocrystals are used as templates, the powder material with a porous structure is prepared by in-situ polymerization growth of the polymer on the surfaces of the cellulose nanocrystals, a small amount of electrolyte is used to activate the powder, and the solid electrolyte is prepared by hot-pressing membrane formation. The solid electrolyte prepared by the present disclosure has excellent electrochemical performance and mechanical performance, and a broad application prospect.

Abstract: The present disclosure belongs to the field of energy materials, and relates to a preparation method of a solid electrolyte, in particular to a method for forming a membrane by using an electrolyte to activate a porous powder material prepared by in-situ polymerization of a polymer on the surfaces of cellulose nanocrystals, and then hot-pressing. According to the technical solution of the present disclosure, cellulose nanocrystals are used as templates, the powder material with a porous structure is prepared by in-situ polymerization growth of the polymer on the surfaces of the cellulose nanocrystals, a small amount of electrolyte is used to activate the powder, and the solid electrolyte is prepared by hot-pressing membrane formation. The solid electrolyte prepared by the present disclosure has excellent electrochemical performance and mechanical performance, and a broad application prospect.

Abstract: A fingerprint recognition apparatus includes an optical film and an image sensor that are disposed at an interval of a first distance along a first direction. The optical film includes a first area and a second area, transmittances of the first area and the second area are different, the first area and the second area form a first pattern, and when receiving light reflected by a first object, the optical film converts the light into an optical image that has the first pattern and transmits the optical image to the image sensor. The image sensor is configured to receive the optical image and convert the optical image into an electrical signal. The electrical signal is used to construct an image of the first object.

Abstract: A synchronous grinding-deburring method and system for a valve spool based on measurement of an overlap value. In the system, a synchronous grinding-deburring machine is configured to complete automatic clamping of the valve spool workpiece and synchronous precise grinding-deburring processing of a working edge; a loading-unloading robot is configured to grab and transport the valve spool workpiece; and a charged-coupled device (CCD)-based industrial visual camera is provided to facilitate an automatic assembly of a slide valve pair; a computer-based pneumatic mate-grinding test bench for an electro-hydraulic servo valve is provided for automatic clamping of the servo valve and automatic detection of the overlap value of a servo valve; and an industrial control console is provided for real-time control of a complete workflow and adaptive control of a processing parameter.

Abstract: A voice coil motor for driving a liquid lens and a lens assembly having a voice coil motor, where the voice coil motor includes a plurality of sub motor parts. The sub motor parts can be independently controlled. The sub motor part includes an unmovable part, a movable part, which can move along an optical axis direction relative to the unmovable part, a connection elastic piece, coupled to the liquid lens and the movable part, where when a force is applied to the movable part in the optical axis direction, the movable part drives the connection elastic piece to squeeze the liquid lens.

Abstract: An optical image stabilization module and an electronic device. The optical image stabilization module includes a first bracket, a second bracket, and a third bracket that are nested in sequence from inside to outside, and an optical lens module fixed on the first bracket. A first connection assembly is arranged between the first bracket and the second bracket, to enable the first bracket and the second bracket to form a rotational connection about a first rotation axis. A second connection assembly is arranged between the second bracket and the third bracket, to enable the second bracket and the third bracket to form a rotational connection about a second rotation axis. The first rotation axis, the second rotation axis, and an optical axis of the camera are perpendicular to each other.

Abstract: A lens structure includes a lens tube; a first lens located on a first end-face of the lens tube, where the first lens includes a light converging region and an edge region located at an edge around the light converging region; a light shielding structure covering the edge region of the first lens; and at least one second lens located inside the lens tube. Based on the lens structure, the first lens is disposed on an outer side of a housing of the lens tube. Therefore, an adjustment degree is relatively high, and convenience and flexibility are relatively desirable. In addition, an optical axis of the first lens and an optical axis of the at least one second lens are aligned at a relatively high extent, thereby improving quality of the lens structure and a yield of the lens structure.

Abstract: A synchronous grinding-deburring method and system for a valve spool based on measurement of an overlap value. In the system, a synchronous grinding-deburring machine is configured to complete automatic clamping of the valve spool workpiece and synchronous precise grinding-deburring processing of a working edge; a loading-unloading robot is configured to grab and transport the valve spool workpiece; and a charged-coupled device (CCD)-based industrial visual camera is provided to facilitate an automatic assembly of a slide valve pair; a computer-based pneumatic mate-grinding test bench for an electro-hydraulic servo valve is provided for automatic clamping of the servo valve and automatic detection of the overlap value of a servo valve; and an industrial control console is provided for real-time control of a complete workflow and adaptive control of a processing parameter.

Abstract: A camera substrate assembly, a camera apparatus, and a terminal device, where the camera substrate assembly includes a rigid support plate and a printed circuit board laminated, where at least two mounting holes for accommodating camera chips are disposed on the printed circuit board, the rigid support plate has mounting surfaces facing the mounting holes respectively and are configured to support the camera chips, strength of the rigid support plate is greater than strength of the printed circuit board, and flatness of the mounting surfaces is less than a specified threshold. The mounting holes disposed on the printed circuit board and the mounting surfaces disposed on the rigid support plate are used to support cameras. This avoids impact of warpage on camera mounting when the printed circuit board and a flexible circuit board are laminated, and improves flatness after camera mounting.

Abstract: A camera module includes a lens and a voice coil motor (VCM), and the lens is placed in the VCM, where a first portion of an inner side of the VCM is attached to a first portion of an outer side of the lens, and a second portion of the inner side of the VCM is provided with a screw thread structure recessed relative to the first portion of the inner side of the VCM. The screw thread structure and a second portion of the outer side of the lens form a groove portion, and the groove portion is filled with adhesive. The first portion of the VCM is a lower portion, and the second portion of the VCM is an upper portion. The first portion of the lens is a lower portion, and the second portion of the lens is an upper portion.

Abstract: A force sensor has a first end portion (1), a second end portion (2), a parallel-guiding mechanism (3), a beam (4), and a strain gauge (5). The parallel-guiding mechanism (3) connects the first end portion (1) to the second end portion (2). A main beam (43) of the beam has a flexible wall (435) and a rigid wall (432). A first connecting part (41) connects the flexible wall to the first end portion, and a second connecting part (42) connects the rigid wall to the second end portion. The strain gauge (5) is fixed to the flexible wall (435). The force sensor can measure a relatively small force.

Abstract: A camera module includes a lens and a voice coil motor (VCM), and the lens is placed in the VCM, where a first portion of an inner side of the VCM is attached to a first portion of an outer side of the lens, and a second portion of the inner side of the VCM is provided with a screw thread structure recessed relative to the first portion of the inner side of the VCM. The screw thread structure and a second portion of the outer side of the lens form a groove portion, and the groove portion is filled with adhesive. The first portion of the VCM is a lower portion, and the second portion of the VCM is an upper portion. The first portion of the lens is a lower portion, and the second portion of the lens is an upper portion.

Abstract: A lens structure includes a lens tube and a first lens located on a first end-face of the lens tube. The first lens includes a light converging region and an edge region located at an edge around the light converging region. The lens structure further includes a light shielding structure covering the edge region of the first lens, and at least one second lens located inside the lens tube. The first lens is disposed on an outer side of a housing of the lens tube. An optical axis of the first lens and an optical axis of the at least one second lens are aligned at a relatively high extent.

Abstract: A force sensor has a first end portion (1), a second end portion (2), a parallel-guiding mechanism (3), a beam (4), and a strain gauge (5). The parallel-guiding mechanism (3) connects the first end portion (1) to the second end portion (2). A main beam (43) of the beam has a flexible wall (435) and a rigid wall (432). A first connecting part (41) connects the flexible wall to the first end portion, and a second connecting part (42) connects the rigid wall to the second end portion. The strain gauge (5) is fixed to the flexible wall (435). The force sensor can measure a relatively small force.

Abstract: A camera substrate assembly, a camera apparatus, and a terminal device, where the camera substrate assembly includes a rigid support plate and a printed circuit board laminated, where at least two mounting holes for accommodating camera chips are disposed on the printed circuit board, the rigid support plate has mounting surfaces facing the mounting holes respectively and are configured to support the camera chips, strength of the rigid support plate is greater than strength of the printed circuit board, and flatness of the mounting surfaces is less than a specified threshold. The mounting holes disposed on the printed circuit board and the mounting surfaces disposed on the rigid support plate are used to support cameras. This avoids impact of warpage on camera mounting when the printed circuit board and a flexible circuit board are laminated, and improves flatness after camera mounting.

Abstract: A technology is described for ranking content using user feedback. A method can include presenting a content entry to a plurality of users to enable viewing of the content entry. Positive and negative ratings can be captured about the content entry from the plurality of users. A relative deviation value can be calculated using the positive ratings and negative ratings for the content entry to form a raw rating score using a processor. Another operation can be scaling the raw rating score via a power function to form a controversial rating score using a processor. The content entry may then be displayed in a ranked order with other content entries based on the controversial rating score.

Abstract: Aspects of the subject matter described herein relate to customizing content to the capabilities of a device. In aspects, an editor uses an editorial tool to specify criteria applicable to content. The criteria include rules to apply in generating content based on quantized capabilities of devices. A publishing component that receives a request for content first detects the capabilities of the requesting device. Then, the publishing component classifies the capabilities of the device and applies the criteria to the classifications in customizing content to deliver to the device.

Abstract: The present invention falls within the field of purifying oil-laden wastewater, which provides a method for purifying coke-cooling wastewater in a delayed coking process in petroleum chemical field. The method comprises the following steps: (a) cooling the coke-cooling wastewater produced in a delayed coking process to 5-55° C. under 0.1-0.25 MPa absolute pressure, to obtain cooled coke-cooling wastewater; (b) subjecting the cooled coke-cooling wastewater to solid-liquid separation, to obtain a coke breeze phase and a liquid phase; (c) further separating the obtained liquid phase, to obtain an oil phase and a water phase; and (d) further discharging water from the obtained oil phase, to obtain the separated oil phase. The present invention also provides an equipment for carrying out the method.

Abstract: A method of installing a threaded fastener from one side of a hole through a substrate. The fastener includes a collar and a bolt having a head, a threaded tail portion and a tool engagement portion extending from the tail. The method includes: (a) engaging the tool engagement portion with a bolt engagement portion of a tool (b) passing the bolt through to the far side of the hole and supporting it there by way of the tool, (c) passing the collar through the hole while supporting it with the tool; (d) assembling the bolt and collar to form the threaded fastener having a head larger than the hole; (e) engaging a nut to tighten the fastener; and (f) detaching the tool from the fastener. Separation of the bolt engagement portion and the tool engagement portion is prevented by a moveable member, which engages both portions.