Abstract: This application relates to a battery module, including a case, a first electrochemical cell layer, a second electrochemical cell layer, a middle separator, and an air supply unit. A main air duct, a first secondary air duct, and a second secondary air duct are disposed in the middle separator. The main air duct penetrates the middle separator. A first ventilation hole and a second ventilation hole are disposed on the case. In this application, by using the middle separator in the battery module, heat dissipation effect of air intake on three sides and air exhaust on one side may be implemented, and a cooling capability for the first electrochemical cell layer and the second electrochemical cell layer may be improved, thereby reducing a temperature difference of the battery module, and improving a service life of the battery module. This application further relates to a transportation means equipped with the battery module.

Abstract: The present application provides a necking method, a necking apparatus, and a battery manufacturing device. The necking method is used for forming a necked portion on a shell with an open end. The necking method includes: forming an annular groove on the shell, where the annular groove extends in a circumferential direction of the shell; and expanding a width of the annular groove towards the open end to form the necked portion. The technical solution of the present application can effectively reduce deformation of the shell, ensure safety of an electrode assembly, and improve performance stability of a battery cell. Meanwhile, pre-necking the shell effectively reduce a risk of deformation resilience of the shell after the necked portion is formed, thereby improving machining precision and structural stability of the necked portion.

Abstract: The present application provides a battery cell, a battery, and an electric apparatus. The battery cell includes a housing and a first protective layer, the housing includes a shell and an end cap, the shell has an opening, the end cap covers the opening, and the end cap is welded to the shell to form a first welded portion. The first protective layer covers a surface of the first welded portion.

Abstract: The battery cell comprises a casing and a first protective layer, the casing having a wall portion, the wall portion being provided with a weak portion, and the weak portion being configured to rupture when the internal pressure or temperature of the battery cell reaches to a threshold value; the first protective layer is arranged on the wall portion and covers at least part of the weak portion. In the battery cell provided by the present application, the battery cell comprises the casing and the first protective layer, the casing has the wall portion, the wall portion is provided with the weak portion, and the weak portion ruptures when the internal pressure or temperature of the battery cell reaches to the threshold value, and the first protective layer covers at least part of the weak portion, so as to protect the weak portion, thus reducing corrosion of the weak portion.

Abstract: The present application discloses a battery cell, a battery, and an electric apparatus. The battery cell includes a housing, an electrode assembly, a current collector assembly, and an anti-oxidation layer. The housing has an accommodating cavity. The electrode assembly is disposed within the accommodating cavity. The current collector assembly is connected to the electrode assembly, and the current collector assembly is connected to a side of the housing facing the accommodating cavity. The anti-oxidation layer is disposed on a side of the housing facing away from the accommodating cavity, and an orthographic projection of the anti-oxidation layer on the housing at least partially overlaps with an orthographic projection of the current collector assembly on the housing. The current collector assembly is disposed in the housing and connected to the electrode assembly, and the electrode assembly is electrically connected to external devices to achieve power transmission.

Abstract: The present application provides a battery cell, a battery, and an electric apparatus. The battery cell includes an electrode assembly, a housing, and a coating, where the electrode assembly is accommodated in the housing, the housing is provided with a welded portion, the welded portion is electrically connected to a tab of the battery cell, and the coating is disposed on an outer side of the housing and covers the welded portion.

Abstract: A temperature control system. The temperature control system includes a plurality of liquid pipelines and a multi-port valve. The multi-port valve includes a valve body and a valve core. The valve body has a mounting cavity, and the valve core is mounted in the mounting cavity. The valve body includes a body and a block-shaped additional portion, the mounting cavity is located on the body, and the block-shaped additional portion is attached to at least a part of a side wall of the body. The valve body includes a plurality of vias, and each via penetrates the block-shaped additional portion and a corresponding side wall of the body. Each liquid pipeline is configured to communicate with one via, there is a battery pack on at least one liquid pipeline, and the temperature control system is configured to control a temperature of the battery pack.

Abstract: Imaging systems and techniques are described. In some examples, an imaging system monitors a characteristic of power usage of the apparatus. The system selects, based on at least the characteristic of power usage of the apparatus, an imaging scheme from a plurality of imaging schemes. Each of the plurality of imaging schemes represents a different division of image processing operations between the at least one processor and a companion device. The system sends image data to the companion device for processing the image data using at least one image processing operation to generate processed image data according to the imaging scheme. In some examples, the at least one image processing operation includes a denoising operation. The system receives the processed image data from the companion device.

Abstract: The disclosure relates to an interaction method, device, electronic apparatus and storage medium., The method-comprising includes: displaying a first feed in a feed page; switching the first feed in the feed page to a second feed in response to a trigger on the feed page; the second feed includes change information of attribute of an object to be recommended; the object to be recommended is an object in a set of to-be-processed objects, and the change information of the attribute of the object to be recommended meets a preset condition; displaying an object summary display page in response to a first selection on the second feed, where the object summary display page includes attribute information of an a to-be-processed object in the set of to-be-processed objects.

Abstract: This application provides a thermal management system, an energy storage system, and a photovoltaic inverter system. The thermal management system includes a coolant system, a refrigerant system, a heat exchange component, and a load-bearing component. The coolant system includes a coolant flow channel plate and a plurality of coolant end components. The refrigerant system includes a refrigerant flow channel plate and a plurality of refrigerant end components. The heat exchange component is configured to perform heat exchange between the coolant system and the refrigerant system. The plurality of coolant end components and the refrigerant flow channel plate are mounted on a same side of the coolant flow channel plate. The load-bearing component is fastened to the coolant flow channel plate, and the load-bearing component includes a mounting through hole. The components of the thermal management system are integrated. This can reduce mounting and maintenance complexity.

Abstract: A facility for conducting a test messaging conversation is described. Under control of a user agent, the facility formulates first messages making up a user side of the test messaging conversation, in a manner that takes into account foregoing messages in the test messaging conversation. The facility receives second messages making up a chatbot side of the test messaging conversation, in a manner that takes into account foregoing messages in the test messaging conversation. The facility compiles a transcript documenting the messages exchanged in the test messaging conversation.

Abstract: A radio frequency (RF) power amplifier based on transformer matching is provided. The RF power amplifier includes: a first-stage amplification circuit configured with an input terminal and an output terminal, wherein the output terminal of the first-stage amplification circuit is configured to be connected to one terminal of a main coil of a first transformer; the first transformer configured to include the main coil and a secondary coil, wherein one terminal of the secondary coil is grounded and the other terminal of the secondary coil is connected to a medium-low power mode input terminal of a power switch; the second-stage amplification circuit configured with an input terminal for receiving the amplified RF signal from the first-stage amplification circuit, wherein an output terminal of the second-stage amplification circuit is configured to be connected to a high power mode input terminal of the power switch.

Abstract: A heat dissipation apparatus includes at least two heating components, at least two fans, and at least two isolation components. Heat dissipation channels are disposed inside the at least two heating components, and a fan is provided in each heat dissipation channel. An isolation component is coupled to an air inlet and/or an air outlet of the heat dissipation channel. The isolation component may isolate an air inlet or air outlet of each heating component from an air inlet or air outlet of another heating component, so as to avoid forming a loop between a heat dissipation channel in which a working fan is located and a heat dissipation channel in which a non-working fan is located.

Abstract: Systems and techniques are described herein for displaying images. For instance, a method for displaying images is provided. The method may include obtaining image data for display at a display of a head-mounted device (HMD); determining a content-based region of interest (ROI) within the image data based on content of the image data; determining a gaze-based ROI of the image data based on gaze information; displaying, at the display, content-based-ROI image data of the content-based ROI at a first resolution; displaying, at the display, gaze-based ROI image data of the gaze-based ROI at a second resolution; and displaying, at the display, peripheral image data outside the content-based ROI and outside the ROI at a third resolution.

Abstract: An energy storage apparatus includes a cabinet, cyclic cooling units, a support, battery modules, and an air supply duct. The support is fastened in an inner cavity of the cabinet, the battery modules are fastened on the support, and the support and the battery modules jointly separate the inner cavity into an air intake region and an air return region. A heat dissipation duct communicating with the air intake region and the air return region is disposed in the battery module. The cyclic cooling unit is located outside the cabinet and includes an air inlet vent and an air return vent. One end of the air supply duct communicates with the air inlet vent, and the other end of the air supply duct communicates with the air intake region. The air return vent communicates with the air return region.

Abstract: An energy storage system includes at least one battery pack and a thermal management system. The battery pack includes a cooling plate and a battery cell. The cooling plate comes in contact with the battery cell to transfer heat energy. The thermal management system includes a control unit, a compressor, a heat exchanger, and at least one first control valve. The control unit is configured to: when a battery cell temperature of the battery pack is greater than or equal to a first temperature threshold, control the compressor to compress a thermal management medium, so that a thermal management medium flows into the heat exchanger; and control opening of the first control valve to control the thermal management medium to flow into the cooling plate in the battery pack to exchange heat with the battery cell, to decrease the battery cell temperature.

Abstract: A power module is provided. The power module includes a housing, a connector, an inductor, a cold plate, and an air-liquid heat exchanger. The connector, the air-liquid heat exchanger, the cold plate, and the inductor are sequentially arranged inside the housing along a first direction. The housing includes a front plate and a rear plate. The front plate and the rear plate are oppositely arranged along the first direction. The connector is arranged between the air-liquid heat exchanger and the front plate along the first direction. The power module has a small size, and has good heat dissipation effect for various heat-generating components, and can reduce heat dissipation costs.

Abstract: The present disclosure provides a receiving circuit for adaptive impedance matching and an operating method thereof. The receiving circuit includes: a first amplification module configured to amplify an input signal input from an input end of the first amplification module to generate a first amplified signal; a frequency mixing module, an input end of which is connected to an output end of the first amplification module, and configured to down-convert the first amplified signal to generate a down-converted signal; and a second amplification module, an input end of which is connected to an output end of the frequency mixing module, and configured to amplify the down-converted signal to generate an output signal, wherein the first amplification module includes an active negative feedback structure for providing adaptive impedance matching in a first bandwidth range.

Abstract: Systems and techniques are described herein for generating foveated image data. For instance, an apparatus for generating foveated image data is provided. The apparatus may include a memory; and a first processor communicatively connected directly to an image sensor and communicatively connected to the memory, the first processor configured to: determine an orientation of at least one eye of a user; store an indication of the orientation in the memory; and provide the indication of the orientation to the image sensor wherein the image sensor is configured to capture a foveated image based on the indication of the orientation, the foveated image comprising a first portion and a second portion, wherein the first portion is based on the indication of the orientation and has a first resolution, and wherein the second portion has a second resolution that is lower than the first resolution.

Abstract: Provided are a ferroelectric memory, a three-dimensional ferroelectric memory, and a three-dimensional ferroelectric memory device. The ferroelectric memory includes a first word line, a first bit line, a first transistor, and a first ferroelectric capacitor pair. The first ferroelectric capacitor pair includes a first ferroelectric capacitor and a second ferroelectric capacitor, and the first ferroelectric capacitor and the second ferroelectric capacitor extend in a first direction. A control terminal of the first transistor is connected to the first word line. A second terminal of the first transistor is connected to the first bit line, and a first terminal of the first transistor is connected to upper electrode plates of the ferroelectric capacitor pair.