Abstract: This disclosure provides an energy storage apparatus, an energy storage apparatus control method, and a photovoltaic system. The energy storage apparatus includes: a plurality of battery clusters, a plurality of conversion units, a start unit, and a controller. The controller includes a plurality of control units. The start unit is configured to: after receiving a start signal, control a control switch in at least one battery cluster to close, to start a control unit corresponding to the battery cluster. The control unit is configured to: determine, based on a state of the control switch in the battery cluster, whether a black start mode is on; and when determining that the black start mode is on, control a DC-DC converter in the corresponding conversion unit to release electric energy stored in a battery pack in the corresponding battery cluster, to energize a direct current bus.

Abstract: A class of multiphase rubidium titanate functional ceramic materials is provided in this disclosure, the composition of which comprises phases of rubidium n-titanates with chemical formula of Rb2TinO2n+1, that of titanium dioxide with chemical formula of TiO2, and a small amount of optional dopant for the purpose of further improving or adjusting performance of the materials. The said materials are obtained by mixing the sources of rubidium, titanium and optional dopant to get a highly active fine-powdery precursor, and then by making heat-treatment in air of the precursor. The said materials possess unusual electrical and electrochemical properties, such as colossal permittivity up to the order of 109 at room temperature accompanied by relatively low dielectric loss, excellent insulativity accompanied by high ionic conductivity up to 10?3 S/cm, have a broad application prospect in the fields like rechargeable high energy density storage devices, semiconductor devices and catalytic purification.

Abstract: The present disclosure provides a training method of a facial expression embedding model, a facial expression embedding method, and a facial expression embedding device. The method includes: determining a sample set, wherein each sample in the sample set includes three images and a sample label; and training the to-be-trained facial expression embedding model with the sample set, to obtain the trained facial expression embedding model, wherein the to-be-trained facial expression embedding model includes a to-be-trained full face embedding sub-model and a trained identity embedding sub-model, the trained facial expression embedding model includes a trained full face embedding sub-model and the trained identity embedding sub-model, and an output of the trained facial expression embedding model is determined by a difference between an output of the trained full face embedding sub-model and an output of the trained identity embedding sub-model.

Abstract: The present application discloses an interactive intelligent pet feeding device which belongs to the technical field of pet feeding devices, including a feeding device body, the feeding device body including a pet food feeding control device and a shake detection module, the pet food feeding control device being configured to realize quantitative feeding of pet food and prevent jamming of the pet food, the shake detection module being configured to detect the motion state of the feeding device body, the shake detection module being connected to a control module to implement data communication, and the control module implementing data communication with a mobile terminal through a wireless transmission module.

Abstract: The present application discloses an interactive intelligent pet feeding device which belongs to the technical field of pet feeding devices, including a feeding device body, the feeding device body including a pet food feeding control device and a shake detection module, the pet food feeding control device being configured to realize quantitative feeding of pet food and prevent jamming of the pet food, the shake detection module being configured to detect the motion state of the feeding device body, the shake detection module being connected to a control module to implement data communication, and the control module implementing data communication with a mobile terminal through a wireless transmission module.

Abstract: The embodiments of the present disclosure provide a method for hot-plugging, a control device for hot-plugging, and a method and device for voltage balance. In one aspect, in an embodiment of the present disclosure, when there is a battery unit to be replaced in a plurality of parallel battery units, a branch in which the battery unit to be replaced locates may be cut off. Therefore, the technical solution provided by the embodiments of the present disclosure may solve a contradictory problem between the replacement of the battery unit and the normal operation of the power supply system in the related art and a problem caused thereby that the safety and stability of the power supply system are low.

Abstract: The embodiments of the present disclosure provide a method for hot-plugging, a control device for hot-plugging, and a method and device for voltage balance. In one aspect, in an embodiment of the present disclosure, when there is a battery unit to be replaced in a plurality of parallel battery units, a branch in which the battery unit to be replaced locates may be cut off. Therefore, the technical solution provided by the embodiments of the present disclosure may solve a contradictory problem between the replacement of the battery unit and the normal operation of the power supply system in the related art and a problem caused thereby that the safety and stability of the power supply system are low.

Abstract: A technique for managing system drive integrity in data storage systems is disclosed. A plurality of storage drive data structures configured to store data associated with a system drive is created, wherein each storage drive data structure includes a data structure initialization string, a unique storage system identifier, a plurality of unique system drive identifiers associated with respective system drives, and a board replacement flag. Respective data structures are stored on each of the plurality of corresponding system drives. The contents of one or more of the data structures stored on one or more of the plurality of systems drives are read via an instruction initiated by a data store system. A drive type for one or more system drives is determined based on the contents.

Abstract: Embodiments of the present disclosure relate to methods and apparatuses for data copy avoidance where after a data access request is received from the first storage node, what is sent by a second storage node to the first storage node is not an address of a second storage space in a second mirrored cache, but an address of a first storage space in a first cache corresponding to the second storage space. In this way, data access may be implemented directly in the first cache on the first storage node, and can reduce data communication across different storage nodes, eliminate potential system performance bottlenecks, and enhance data access performance.

Abstract: Embodiments of the present disclosure relate to a cache data processing apparatus, computer program product and a method by monitoring power supply statuses of a storage device to determine whether power failure occurs, and sending a power failure event to a processor of the storage device in response to determining that the power failure occurs such that the processor stops a data reading/writing operation of the storage device and flushes cache data to a disk

Abstract: Techniques for a method of processing events are described. A first notification is received regarding an occurrence of a first event identifying a first physical drive coming online. It is determined whether the first event is dependent on one or more other events that have not yet occurred. If it is determined that the first event depends on one or more other events that have not yet occurred, performing first processing to defer processing of the first event until the one or more other events have occurred. If it is determined that the first event does not depend on the one or more other events that have not yet occurred, the first event is processed.

Abstract: Embodiments of the present disclosure relate to methods and apparatuses for data copy avoidance where after a data access request is received from the first storage node, what is sent by a second storage node to the first storage node is not an address of a second storage space in a second mirrored cache, but an address of a first storage space in a first cache corresponding to the second storage space. In this way, data access may be implemented directly in the first cache on the first storage node, and can reduce data communication across different storage nodes, eliminate potential system performance bottlenecks, and enhance data access performance.