Abstract: The user equipment (UE) of an antenna orientation detection system may receive a first set of beacon signals via an antenna at the UE. Each of the first set of beacon signals may be associated with a corresponding indication of an expected beacon location. The UE may calculate an orientation of the antenna based on the first set of beacon signals. The UE may change at least one of a position, the orientation, or a direction of the antenna and receive a second set of beacon signals. The UE may calculate at least one of a set of interfering condition parameters, a set of spoofing condition parameters, or a set of non-line-of-sight (NLOS) condition parameters based on the first set of beacon signals and the second set of beacon signals.

Abstract: A multipath condition detection method includes: determining a first signal quality value corresponding to a first wireless signal, of a first frequency and from a signal source, received by a receiver of a mobile device; determining a second signal quality value corresponding to a second wireless signal, of a second frequency that is different from the first frequency, received by the receiver; and determining whether at least one difference value, corresponding to the first signal quality value and the second signal quality value, is indicative of the mobile device being in a multipath condition with respect to the signal source.

Abstract: A battery is provided. A first conductive member is disposed within an accommodating cavity of the battery, and an insulating adhesive layer is disposed between the first conductive member and a bottom cover, and connects the first conductive member and the bottom cover. A through hole is disposed on the bottom cover, and is covered by the first conductive member. An annular side wall is welded with the bottom cover at an edge on a side close to the bottom cover to form a welding mark. There is a first spacing between the welding mark and the insulating adhesive layer, and a width of the first spacing is more than 3 times of a width of the welding mark. A first electrode tab of a battery core is electrically connected with the first conductive member, and a second electrode tab of the battery core is electrically connected with the housing.

Abstract: An electrode assembly includes at least two electrode plates stacked on each other; the first electrode plate is provided with a first groove, and the first current collector is connected to a first tab in the first groove; the second electrode plate is provided with a first avoidance groove, and the first avoidance groove and the first groove are disposed opposite to each other along a stacking direction of the electrode plates; and the first tab is completely covered by a projection of the first avoidance groove on the first electrode plate. Due to arrangement of an avoidance groove, an increase in a thickness of an electrode assembly caused by a tab may be reduced, so that the thickness of the electrode assembly can be reduced, reducing a volume of the electrode assembly, and further improving an energy density of a battery.

Abstract: An electrode plate includes: an electrode plate body and a tab, the electrode plate body includes a current collector, a first active material layer and a second active material layer; the first active material layer is provided with a groove, a bottom wall of the groove is a first functional surface of the current collector; and the tab is welded to the current collector in the groove to form a welding mark, the welding mark includes a first solder joint and a second solder joint, the first solder joint is located on the tab, the second solder joint is located on the current collector, and the first solder joint and the second solder joint are integrally fused and connected, which effectively enhances a welding strength between the tab and the current collector, so that a reliability of the electrode plate after welding is relatively high.

Abstract: The present application provides a battery. The battery includes a battery cell and a shell. The shell includes a first cover body, a second cover body, and an annular middle frame. The annular middle frame is arranged between the first cover body and the second cover body. The first cover body, the annular middle frame, and the second cover body are sequentially connected to form a closed cavity. The battery cell is arranged in the closed cavity. The battery of the present application can solve a problem that product yield of the shell is affected due to deformation, stacking or cracking of a plate under force in a stamping process.

Abstract: A method for preparing Mg-RE alloys with high strength and ductility using selective laser melting (SLM) additive manufacturing technology includes the following steps of: A. preparing Mg-RE-(Zn)—Zr pre-alloyed spherical powder by gas atomization; B. molding the Mg-RE-(Zn)—Zr pre-alloyed spherical powder using SLM to obtain the Mg-RE alloys with high strength and ductility; and C. conducting heat treatment on the Mg-RE alloys prepared in step B: solid solution+aging treatment or only aging treatment The method adjusts and controls microstructure and mechanical properties of the alloys by adjusting and controlling process parameters of SLM (laser power, scanning speed, hatch spacing, spot diameter, layer thickness, interlayer rotation angle, substrate preheating temperature, partition width and overlapping area width) and process parameters of subsequent heat treatment (temperature and time) to prepare the Mg-RE-(Zn)—Zr alloys with high strength and ductility using SLM process for the first time.

Abstract: The present application discloses an outer shell structure and a battery, the outer shell structure is used for carrying a battery cell. The outer shell structure includes a cover plate, a bottom plate and a shell body, where each of two opposite ends of the shell body both has an opening, the cover plate and the bottom plate cover on the two opposite sides of the shell body respectively; the cover plate, the shell body and the bottom plate together enclose to form an accommodation chamber for accommodating the battery cell; and the outer shell structure includes a conductive assembly disposed on the shell body. The present utility model improves the effective volume of the accommodation chamber of the battery and energy density of the battery.

Abstract: The present disclosure provides a battery, a manufacturing method thereof and an electronic product. The battery cell includes electrodes and tabs, where each of the electrodes includes a current collector and an active material layer, and the current collector includes a coating zone coated with the active material layer and an empty foil zone, and an end of a tab overlaps the empty foil zone and the tab and the empty foil zone are connected by laser welding; the side of the empty foil zone facing away from the tab has a plurality of dot-shaped welding marks arranged at intervals, and the dot-shaped welding marks include a concave part and an annular convex part surrounding the concave part. The contact area between the annular convex part and the separator between the positive electrode and the negative electrode is large, and the separator is less likely to be pierced.

Abstract: The present disclosure provides a button cell and an electronic device. The button cell includes a case, a cell, a conductive member arranged on the case and connected to the case in an insulated manner, and a liquid injection port for injecting an electrolyte solution into an accommodating cavity. A cell is placed in an accommodating cavity of a bottom shell. A first tab is welded to an inner bottom wall of the bottom shell, and then the top cover having the conductive member is connected to the bottom shell in a sealed manner, with a second tab on the cell being electrically connected to the conductive member. Finally, an electrolyte solution is injected into the accommodating cavity. After the electrolyte solution is injected, a sealing member covers the liquid injection port, and the sealing member is connected to the liquid injection port in a sealed manner.

Abstract: A method and a system for mental index prediction are provided. The method includes the following steps. A plurality of images of a subject person are obtained. A plurality of emotion tags of the subject person in the images are analyzed. A plurality of integrated emotion tags in a plurality of predetermined time periods are calculated according to the emotion tags respectively corresponding to the images. A plurality of preferred features are determined according to the integrated emotion tags. A mental index prediction model is established according to the preferred features to predict a mental index according to the emotional index prediction model.

Abstract: Provided is a battery, including a conductive shell and a cover plate assembly, the cover plate assembly and the conductive shell enclose a chamber. The conductive shell or the cover plate assembly are provided with a liquid injection hole communicating with the chamber, a sealing member is disposed on the liquid injection hole to seal the liquid injection hole. A first welding seam and a second welding seam are formed on the sealing member respectively, the first welding seam has a first head end and a first tail end, the second welding seam has a second head end and a second tail end, the first head end is connected to the second tail end, the second head end is connected to the first tail end, the sealing member is connected to the conductive shell or the cover plate assembly by the first welding seam and the second welding seam.

Abstract: The present application provides a battery and an electronic product. The battery includes a housing, a cover assembly and a core body, where the cover assembly is disposed on the housing; the cover assembly includes a conductive part and a top cover, and the top cover is in insulated connection with the conductive part; the conductive part includes a flattening portion and a boss portion, and the boss portion is connected to the flattening portion; a center of the top cover is provided with a through hole, and the boss portion extends into the through hole; and the core body is accommodated in the housing, the core body is connected with a first tab and a second tab, the first tab is connected with the conductive part, and the second tab is connected with the housing.

Abstract: The present application provides a battery and an electronic product, where the battery provided by the present application includes a housing, a battery cell and a sealing plate; the housing is a hollow structure with an opening at one face of the housing; the sealing plate is connected to the opening in a sealing manner; the battery cell is accommodated in an accommodation space between the housing and the sealing plate; at least one end of the battery cell is a cell position-limiting face; at least one face of the housing is provided with a position-limiting structure, a connecting member is further disposed in the accommodation space, and the connecting member and the housing are insulated from each other. The present application provides a battery and an electronic product for at least solving the technical problem of poor installation stability of a battery cell in a housing.

Abstract: The present disclosure provides a battery electrode sheet, a battery and a method for manufacturing the battery electrode sheet. The battery electrode sheet includes an electrode sheet body and a tab, the electrode sheet body is provided with a tab installation groove and a first groove, the tab installation groove being communicated with a first edge of the electrode sheet body, and the first groove being connected to a second edge of the electrode sheet body. The first edge and the second edge are two opposite edges of the electrode sheet body, and the tab is connected in the tab installation groove. The battery electrode sheet of the present disclosure is less prone to fracture and the battery is more reliable.

Abstract: The present application provides a battery and an electronic device. The battery includes an electrode assembly, a lower casing, a first conductive part, and a second conductive part. An opening is provided at a top of the lower casing; the second conductive part covers the opening of the lower casing; the second conductive part and the lower casing define an accommodating cavity; the electrode assembly is located in the accommodating cavity; the first conductive part is connected to a side of the second conductive part facing the accommodating cavity; a sealing layer is provided between the first conductive part and the second conductive part to insulate the two conductive parts; a through hole is formed on the second conductive part; and at least part of a structure of the first conductive part is exposed out of the accommodating cavity via the through hole.

Abstract: The present disclosure provides a battery and a portable electrical device. The battery includes a housing and a battery cell disposed in the housing; the battery cell includes electrodes and tabs, where the electrode includes a current collector and an active material layer, and the current collector includes a coating zone coated and an empty foil zone, and an end of the tab is welded to the empty foil zone by a laser welding process; a surface of the empty foil zone facing away from the tab has a plurality of welding zones arranged at intervals, and each welding zone comprises at least one line-shaped welding mark and a surface of the tab facing away from the empty foil zone has no welding mark. The protrusion of the present disclosure is less likely to pierce a separator between a positive electrode and a negative electrode.

Abstract: Techniques are provided for utilizing reference signals transmitted by network stations to determine the orientation of a wireless node. An example method for determining an orientation of a user equipment includes determining a first location associated with the user equipment, determining a second location associated with a first wireless node, receiving, with the user equipment, a radio frequency signal transmitted from the first wireless node, determining two measurements based at least in part on the first location, the second location, and angle of arrival information associated with the radio frequency signal, determining a gravity vector based on inertial measurements obtained with the user equipment, and computing the orientation of the user equipment based at least in part on the gravity vector and the two measurements.

Abstract: The present disclosure provides a button cell and an electronic device. The button cell includes a case, a cell, a conductive member arranged on the case and connected to the case in an insulated manner, and a liquid injection port for injecting an electrolyte solution into an accommodating cavity. A cell is placed in an accommodating cavity of a bottom shell. A first tab is welded to an inner bottom wall of the bottom shell, and then the top cover having the conductive member is connected to the bottom shell in a sealed manner, with a second tab on the cell being electrically connected to the conductive member. Finally, an electrolyte solution is injected into the accommodating cavity. After the electrolyte solution is injected, a sealing member covers the liquid injection port, and the sealing member is connected to the liquid injection port in a sealed manner.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for jointly training an image embedding model and a text embedding model. In one aspect, a method comprises: processing data from a historical query log of a search system to generate a candidate set of training examples, wherein each training example comprises: (i) a search query comprising a sequence of one or more words, (ii) an image, and (iii) selection data characterizing how often users selected the image in response to the image being identified by a search result for the search query; selecting a plurality of training examples from the candidate set of training examples; and using the training data to jointly train the image embedding model and the text embedding model.