Abstract: The present disclosure relates to the technical field of batteries, and in particular to a wound cell, a battery structure, a flexible display device and a hot pressing device. The wound cell has a first end face and a second end face which are opposite to each other in a winding axis direction, and an outer surface located between the first end face and the second end face. The outer surface comprises four side planes which are sequentially connected end to end, and the joints of at least two adjacent side planes are chamfered. A tab protrudes from at least one of the first end surface and the second end surface, and is capable of being bent to the side planes.

Abstract: Provided is a vehicle-mounted display module. The vehicle-mounted display module vehicle-mounted display module includes an auxiliary deformation device and a deformable display screen; wherein the auxiliary deformation device comprises a drive mechanism, a securing mechanism, and a support mechanism; the securing mechanism is disposed on a side of the drive mechanism and is securably connected to the drive mechanism, and the securing mechanism is configured to secure a first local structure of the drive mechanism; the support mechanism is disposed on a side, away from the securing mechanism, of the drive mechanism and is securably connected to the drive mechanism, and the support mechanism is configured to reciprocate in a first direction under drive of a second local structure of the drive mechanism.

Abstract: The present disclosure provides a connecting member for a flexible battery, a flexible battery, an electronic device, and a manufacturing method. The connecting member includes: a first polymer layer; a flexible conductive layer on a surface of the first polymer layer, the flexible conductive layer being in direct contact with the first polymer layer; a bonding layer on a side of the flexible conductive layer away from the first polymer layer; and a second polymer layer on a side of the bonding layer away from the flexible conductive layer.

Abstract: A display device includes a support shell, a roller, a first support plate, a second support plate, at least one group of track support assemblies, and a flexible display panel. A plurality of support bars arranged in an array between the first support plate and the second support plate. A first planar display portion is fixedly connected to the first support plate, a second planar display portion is fixedly connected to the second support plate, and a curled display portion is in contact with at least part of the plurality of support bars but is not connected to the at least part of the plurality of support bars.

Abstract: A display device includes a first housing, a second housing, a roller, a pulley assembly, a stressed member, and a flexible display panel. The first housing includes a fixed portion and a sliding portion slidably connected to the fixed portion. The second housing is fixedly connected to a side of the fixed portion away from the sliding portion, and an angle between the first housing and the second housing is less than 180 degrees. The roller is disposed between the first housing and the second housing, and the roller is rotatably connected to at least one of the first housing and the second housing. The pulley assembly comprises a pulley block in the first housing, and a tension belt wound around the pulley block, and the pulley block is respectively connected to the fixed portion and the sliding portion.

Abstract: Provided is a retractable mechanism for a display device. The retractable mechanism includes: a first housing, a second housing, and a drive assembly, the first housing being movably connected to the second housing; wherein the drive assembly is disposed in the first housing and is connected to the first housing; the retractable mechanism has a connected state and a disconnected state, in the connected state, the second housing is connected to the drive assembly and is able to extend or retract relative to one side of the first housing under driving by the drive assembly, in the disconnected state, the second housing is separated from the drive assembly; and the retractable mechanism is configured to be switched from the connected state to the disconnected state in response to an acceleration of the second housing moving relative to the first housing being greater than a predetermined value.

Abstract: A display apparatus, includes: a flexible display panel; a power device, connected to the flexible display panel, where the power device drives the flexible display panel to move in response to a driving signal; and a control device, connected to the power device, where the control device is used to control the power device to operate at a first rate in a first movement stage of the flexible display panel, and control the power device to operate at a second rate in a second movement stage of the flexible display panel, and the second rate is greater than the first rate.

Abstract: Disclosed is a fracture plugging simulation experimental device and an experimental method thereof. The device comprises a simulated wellbore, a simulated formation, a simulated fracture, a plurality of pressure sensors and vales, a mixing barrel, a liquid injection port and a pressurization port, a liquid collection tank, a plugging fluid storage tank, a heating device, etc. The method comprises: loading the simulated formation with the simulated fracture in the simulated wellbore, closing the second valve and turning on the mixing device, injecting a lost circulation material into the mixing barrel, closing the liquid injection port and turning on the heating device and pressurizing, stopping pressurizing and opening the second valve to establish a plugging process, turning on the plunger pump to continue pressurizing, and collecting a fluid pressure change of the simulated fracture in the plugging process; and calculating a pressure-bearing capacity of plugged fracture.

Abstract: Disclosed is a system for optimizing a particle size distribution of a lost circulation material. The system comprises a data acquisition module, a communication module, an experimental module, a particle size distribution optimization module, and a plugging and filling module. The data acquisition module is configured to obtain a target feature particle size. The experimental module is configured to obtain the target feature particle size, and set a plurality of experimental schemes for fracture plugging; conduct fracture plugging experiments to obtain experimental results; evaluate a plurality of fracture plugging effects of each of the plurality of experimental schemes. The particle size distribution optimization module is configured to obtain the plurality of fracture plugging effects, determine a particle size distribution rule, and obtain optimized particle size distribution data by optimizing the particle size distribution of the lost circulation material.

Abstract: Driving method, apparatus, and sliding-rollable display device are disclosed. The sliding-rollable display device includes a movable housing, a driving motor and a flexible display screen, at least a portion of which covers the movable housing. The driving motor drives the movable housing to move between first and second positions, the first position is a position of the movable housing when the sliding-rollable display device is fully rolled and the second position is a position of the movable housing when the sliding-rollable display device is fully unrolled. A sensing element is provided on the movable housing, sensing modules are arranged at the first and second positions for detecting the sensing element. The driving motor is controlled to drive the movable housing to move to the first or second position, and to stop driving the movable housing when a first timer expires.

Abstract: Disclosed is a fracture plugging simulation experimental device and an experimental method thereof. The device comprises a simulated wellbore, a simulated formation, a simulated fracture, a plurality of pressure sensors and vales, a mixing barrel, a liquid injection port and a pressurization port, a liquid collection tank, a plugging fluid storage tank, a heating device, etc. The method comprises: loading the simulated formation with the simulated fracture in the simulated wellbore, closing the second valve and turning on the mixing device, injecting a lost circulation material into the mixing barrel, closing the liquid injection port and turning on the heating device and pressurizing, stopping pressurizing and opening the second valve to establish a plugging process, turning on the plunger pump to continue pressurizing, and collecting a fluid pressure change of the simulated fracture in the plugging process; and calculating a pressure-bearing capacity of plugged fracture.

Abstract: Provided is a retractable mechanism for a display device. The retractable mechanism includes: a first housing, a second housing, and a drive assembly, the first housing being movably connected to the second housing; wherein the drive assembly is disposed in the first housing and is connected to the first housing; the retractable mechanism has a connected state and a disconnected state, in the connected state, the second housing is connected to the drive assembly and is able to extend or retract relative to one side of the first housing under driving by the drive assembly, in the disconnected state, the second housing is separated from the drive assembly; and the retractable mechanism is configured to be switched from the connected state to the disconnected state in response to an acceleration of the second housing moving relative to the first housing being greater than a predetermined value.

Abstract: Disclosed is a system for optimizing a particle size distribution of a lost circulation material. The system comprises a data acquisition module, a communication module, an experimental module, a particle size distribution optimization module, and a plugging and filling module. The data acquisition module is configured to obtain a target feature particle size. The experimental module is configured to obtain the target feature particle size, and set a plurality of experimental schemes for fracture plugging; conduct fracture plugging experiments to obtain experimental results; evaluate a plurality of fracture plugging effects of each of the plurality of experimental schemes. The particle size distribution optimization module is configured to obtain the plurality of fracture plugging effects, determine a particle size distribution rule, and obtain optimized particle size distribution data by optimizing the particle size distribution of the lost circulation material.

Abstract: Provided is a vehicle-mounted display module. The vehicle-mounted display module vehicle-mounted display module includes an auxiliary deformation device and a deformable display screen; wherein the auxiliary deformation device comprises a drive mechanism, a securing mechanism, and a support mechanism; the securing mechanism is disposed on a side of the drive mechanism and is securably connected to the drive mechanism, and the securing mechanism is configured to secure a first local structure of the drive mechanism; the support mechanism is disposed on a side, away from the securing mechanism, of the drive mechanism and is securably connected to the drive mechanism, and the support mechanism is configured to reciprocate in a first direction under drive of a second local structure of the drive mechanism.

Abstract: Provided are a battery module manufacturing device and a battery module manufacturing method. The battery module manufacturing device includes a cell hot pressing assembly, and the cell hot pressing assembly includes a first hot pressing part and a second hot pressing part which are oppositely disposed; the first hot pressing part includes at least one upper pressing head, and the side of each upper pressing head facing the second hot pressing part is provided with a piston inner pressing head; the second hot pressing part includes at least one lower pressing head in one-to-one correspondence to the upper pressing head, the side of each lower pressing head facing the first hot pressing part is provided with two parallel side baffles, a limiting gap is formed between the two side baffles.

Abstract: The present disclosure provides a semiconductor structure and a method for forming the semiconductor structure. The method includes: providing a substrate including a device region and a guard ring region surrounding the device region; and forming a power device in the device region and forming a guard ring in the guard ring region, wherein the guard ring is doped with a first dopant ion that is formed by a partial doping process used in a formation of the power device, and a conductivity type of the first dopant ion in the guard ring is different from a device type of the power device. Since the guard ring is formed by the necessary doping process used in forming the power device, additional photomask process and doping process for forming the guard ring is omitted, effectively reducing process steps and process costs.

Abstract: Embodiments of the present disclosure provide a battery, which includes a plurality of energy storage units; and a connecting portion that connects the plurality of energy storage units together in parallel, where the connecting portion is made of a flexible material. The embodiments of the present disclosure further provides a display panel, which includes the above battery and a flexible display module, where the battery is provides on a back side of the flexible display module, the battery is electrically connected with the flexible display module for providing power to the flexible display module.

Abstract: A method, a computer device and a readable medium user's intent mining are disclosed. The method includes: obtaining text feature information corresponding to behavior data of a user; extracting an intent information list corresponding to the behavior data by using a pre-trained intent extracting model; and obtaining the target intent information of the user from the intent information list corresponding to the behavior data of the user, according to the text feature information and the intent information list corresponding to the behavior data, and a preset semantic similarity threshold, and adding the target intent information of the user to an intent information queue for advertisement recommendation.