Abstract: A method for removing calcium ions from high concentration organic wastewater is provided. The method comprises the steps of: (1) introducing high concentration organic wastewater containing Ca2+, inorganic carbon and a seed crystal into a reactor with a molar ratio of Ca2+ to inorganic carbon of 1:(3.2-6.2); (2) adjusting the hydrogen ion activity ?(H+) and ionic strength of the solution in the reactor; (3) sequentially stirring and precipitating in the reactor to convert Ca2+ in the high concentration organic wastewater into calcium carbonate which is then precipitated for calcium removal.

Abstract: Disclosed are a method, a device and a non-transitory storage medium. The method includes: deploying a detection satellite to fly in one detection orbital plane opposite to the satellites in the large-scale constellation, to sequentially detect satellites flying in one target orbital plane of the large-scale constellation in a manner that an approach distance between the detection satellite and a satellite being detected is within a set detection distance, transmitting the detection satellite from the one detection orbital plane to another detection orbital plane in virtue of Earth oblateness perturbation, so as to sequentially detect satellites flying in another target orbital plane of the large-scale constellation in a manner that the approach distance between the detection satellite and a satellite being detected is within the set detection distance, and stopping the detection satellite from detecting until all satellites of the large-scale constellation have been detected.

Abstract: The present application provides a battery module and an electric vehicle. The battery module includes a case, a longitudinal beam, and a tray. The case is provided with at least one exhaust port. The longitudinal beam is disposed in the case and is abutted against a bottom surface of the case to partition accommodating areas in the case on both sides of the longitudinal beam along a width direction. The tray is disposed in one of the accommodating areas and is configured to install a battery cell. A through hole opposite to an end of the battery cell is defined on the tray, the tray is spaced from the bottom surface of the case to define a pressure relief cavity, the through hole and the exhaust port are respectively communicated with the pressure relief cavity.

Abstract: The present application discloses a battery cell module and a battery system. The battery cell module includes a plurality of battery cell assemblies. Each of the battery cell assemblies includes a battery cell, an end cover, and a base. A first end of the battery cell is connected to the end cover, and a second end of the battery cell is connected to the base. End covers of adjacent ones of the battery cell assemblies are detachably connected to each other, and bases of the adjacent ones of the battery cell assemblies are detachably connected to each other.

Abstract: The present application discloses a battery cell module and a battery system. The battery cell module includes a plurality of battery cells and a plurality of end covers. Each of the battery cells is provided with one of the end covers, and adjacent two of the end covers are detachably connected to each other, so that the plurality of battery cells are relatively fixed into a group.

Abstract: A battery pack and a vehicle are provided. The battery pack includes a base plate assembly, a side beam assembly, and at least one battery cell group. The side beam assembly is disposed at an outer periphery of the base plate assembly. The side beam assembly and the base plate assembly define an accommodating cavity, and the accommodating cavity includes at least one installation area. The installation area is provided with the battery cell group. The battery cell group includes a plurality of battery cells, and the plurality of battery cells are fixedly disposed on the base plate assembly. According to the battery pack and the vehicle, each battery cell is fixedly disposed on the base plate assembly in the installation area. The plurality of the battery cells disposed in installation area defines a battery cell group.

Abstract: The present application provides a battery box body and a battery module. The battery box body incudes a base plate assembly and a side beam assembly, where the base plate assembly is divided into a first region and a second region. Where a first pressure relief cavity is defined by an outer plate and an inner plate of the base plate assembly, the battery cells are occluded on a portion of a cavity wall of the first pressure relief cavity. A second pressure relief cavity is defined by the support plate and the inner plate, and other portion of the cavity wall of the first pressure relief cavity is communicated with the second pressure relief cavity. A third pressure relief cavity is defined by an inner cavity of the side beam assembly, the side beam assembly is installed with a pressure relief valve communicated with the third pressure relief cavity.

Abstract: Disclosed are a system and a method for capturing a space target. The system includes a plurality of capturing devices, a delivery device, a launching device, and a deceleration and recovery device, each of the plurality of capturing devices is configured to be launched into a target orbit to capture a defunct space target, the delivery device is configured to deliver, along a preset delivery trajectory, each of the plurality of capturing devices to a first preset location in the launching device, the launching device is configured to launch each of the plurality of capturing devices located at the first preset location into the target orbit to capture the defunct space target, and the deceleration and recovery device is configured to decelerate each of the plurality of capturing devices after it is launched and flies a preset distance.

Abstract: A battery module and an electric vehicle are provided by the present application. The battery module includes a case body and at least one tray; at least one exhaust port is defined in the case body, at least one tray mounting cavity is defined in the case body, and the case body includes a first mounting surface surrounding a periphery of the tray; the tray is disposed in the tray mounting cavity to divide the tray mounting cavity into a cell accommodating cavity located above the tray and a pressure relief cavity located below the tray, the tray is provided with through holes facing battery cells, the pressure relief cavity is communicated with the through holes and the exhaust port, respectively, and the cell accommodating cavity is configured to accommodate the battery cells; the tray includes a second mounting surface, and the second mounting surface abuts against the first mounting surface.

Abstract: This application relates to the artificial intelligence (AI) field, and specifically, to a voice quality enhancement method and a related device. The method includes: after a PNR mode is enabled, obtaining a noisy voice signal and target voice-related data, where the noisy-carrying voice signal includes a voice signal of a target user and an interfering noise signal, and the target voice-related data indicates a voice feature of the target user; and performing noise reduction on the noisy voice signal based on the target voice-related data by using a trained voice noise reduction model to obtain a noise-reduced voice signal of the target user, where the voice noise reduction model is implemented based on a neural network. In embodiments of this application, voice of a target person can be enhanced, and interference can be suppressed.

Abstract: A method for recognizing navigable regions for a mobile platform includes segregating a plurality of three-dimensional scanning points based at least in part on a plurality of grids referenced relative to a portion of the mobile platform, identifying a subset of scanning points from the plurality of scanning points based at least in part on the segregating of the plurality of scanning points, and recognizing a region navigable by the mobile platform based at least in part on positions of the subset of scanning points. Individual two-dimensional grids are associated with corresponding distinct sets of segregated scanning points. The subset of scanning points indicates one or more obstacles in an environment adjacent to the mobile platform.

Abstract: An illumination device includes a light tube holder including two connectors for receiving either a light-emitting diode (LED) tube or a fluorescent tube. One of the connectors includes a rotary member rotatably received in a through hole defined in a retainer, and three conductive elastic pieces positioned in the retainer around the through hole. One conductive piece is electrically connected to an LED tube drive circuit board and a fluorescent tube drive circuit board, and the other two conductive pieces are electrically connected to the LED and fluorescent tube drive circuit boards, respectively. The rotary member can be rotated to first and second positions, wherein at the first position, the LED tube can be activated, and at the second position the fluorescent tube can be activated.

Abstract: An illumination device includes a light tube holder including two connectors for receiving either a light-emitting diode (LED) tube or a fluorescent tube. One of the connectors includes a rotary member rotatably received in a through hole defined in a retainer, and three conductive elastic pieces positioned in the retainer around the through hole. One conductive piece is electrically connected to an LED tube drive circuit board and a fluorescent tube drive circuit board, and the other two conductive pieces are electrically connected to the LED and fluorescent tube drive circuit boards, respectively. The rotary member can be rotated to first and second positions, wherein at the first position, the LED tube can be activated, and at the second position the fluorescent tube can be activated.