Abstract: A method for determining a charging time includes obtaining a maximum monomer voltage of a cell of a battery, and under a condition that the maximum monomer voltage is determined to be greater than or equal to a value, determining, based on a charging voltage of the battery, the charging time of the battery.

Abstract: The present invention relates to a cloud software service resource allocation method based on QoS model self-correction, the method comprising: step S1: performing online self-learning to obtain a QoS prediction model; step S2: collecting runtime data under a certain workload, and improving the accuracy of the QoS prediction model under a current workload through self-correction control; step S3: constructing a fitness function in combination with the quality of service (QoS) and the cloud resource cost (Cost), and searching for a target resource allocation scheme by using an improved particle swarm optimization algorithm; step S4: comparing the current resource allocation situation with the searched target resource allocation scheme to obtain a difference therebetween, and then adjusting resources according to a certain proportion; and step S5: repeating steps S2 to S4 until the current resource allocation situation is the same as the target resource allocation scheme which means that resource adjustment is

Abstract: A water-retaining material, including: a polymer chain segment provided by a hydrophilic polymer; and a proton carrier group grafted to the polymer chain segment. The polymer chain segment contains a hydrophilic group. A method for preparing a water-retaining material, includes: performing, in a reaction system including an activator and a catalyst, a grafting reaction between a hydrophilic polymer and a proton carrier compound to yield the water-retaining material. The water-retaining material contains a polymer chain segment containing a hydrophilic group. A water-retaining proton exchange membrane, includes a matrix. The matrix is doped with a water-retaining material; and the water-retaining material including the above water-retaining material.

Abstract: A computing system includes a host device and an acceleration device. The host device is in a communication connection with the acceleration device. The host device is configured to send invocation information to the acceleration device. The invocation information indicates a storage address of the first data. The acceleration device is configured to receive the invocation information from the host device, obtain the first data from a memory based on the storage address, and perform the to-be-processed task based on the first data to obtain a processing result. The host device notifies the acceleration device of the storage address, and the acceleration device directly obtains the data from the memory based on the storage address such that the host device is prevented from obtaining the data from the memory.

Abstract: A method for determining a remaining charging time of a battery. The method includes obtaining a first charging current and a second charging current. The first charging current is a present charging current of the battery, and the second charging current is a charging current of the battery when the battery is fully charged. The method further includes determining an average charging current value based on the first charging current and the second charging current, and determining the remaining charging time based on the average charging current value.

Abstract: A phase change heatsink, a process for manufacturing the heatsink, and a communication device having the heatsink are disclosed. The phase change heatsink includes a heatsink base and a phase change heat spreader integrated into the heatsink base. The phase change heat spreader includes a cover attached to the heatsink base and defines an enclosed cavity, in which one or more support pillars are provided in the enclosed cavity to extend from the heatsink base to the cover, and which is partially filled with refrigerant. The process comprises steps of: a) die-casting the heatsink base to shape the cavity and the support pillars; b) attaching the cover to the heatsink base to enclose the cavity; and c) filling a certain amount of refrigerant into the cavity through a filling port, and scaling the filling port. The attaching step b) further comprises a step b1) of sealing a periphery of the cover to the heatsink base, and a step b2) of bonding a central portion of the cover to the support pillars.

Abstract: The present application relates to the technical field of compressors, and in particular, to a composite gas diffusion layer, a preparation method thereof, a membrane electrode, and an electrochemical hydrogen compressor. The composite gas diffusion layer applied to an electrochemical hydrogen compressor includes: a base layer, a hydrophobic layer, and a water-absorbing layer, and the base layer, the hydrophobic layer, and the water-absorbing layer are sequentially stacked. The composite gas diffusion layer of the present application is designed for an inherent problem of the drying up of the anode during the operation of the electrochemical hydrogen compressor, and by arranging a layered structure for water absorption/hydrophobicity, the composite gas diffusion layer can improve the compression performance of the membrane electrode of the compressor and reduce the ohmic impedance of the membrane electrode.

Abstract: This application provides a charging control method, a charging control device, an electronic device, and a storage medium. The charging control method includes: obtaining fastest-charge data, where a charging time in the fastest-charge data is less than or equal to a minimum charging time for a same state-of-charge (SOC) increment section in historical charging processes; and performing charging control on a battery based on the fastest-charge data. By obtaining the fastest-charge data and performing charging control on the battery based on the fastest-charge data, the charging control method according to this application can ensure that the charging time is close to or equal to the minimum charging time in historical charging processes, thereby effectively increasing the charging speed.

Abstract: A heatsink and a communication device having the heatsink are disclosed. The heatsink comprises a heatsink base and a plurality of heatsink fins. Each heatsink fin includes a fin bottom joined to the heatsink base and a fin top opposite to the fin bottom. A plurality of flow channels are formed in at least one of the heatsink fins to extend obliquely from the fin bottom towards the fin top. The plurality of flow channels merge into a public channel formed at the fin top.

Abstract: This application discloses a charging duration determining method, a BMS, a battery, and an electrical device. The method includes: determining a charge temperature of a battery; estimating, in a case that the charge temperature exceeds a first specified range, a first duration to be taken to adjust the charge temperature of the battery to the first specified range; estimating a second duration to be taken to charge the battery to a target SOC after the charge temperature of the battery has been adjusted to the first specified range; and determining, based on a charge start time of the battery, the first duration, and the second duration, a duration to be taken to charge the battery to the target SOC. The charging duration determined for the battery according to this application is more accurate, and facilitates users to accurately learn the charging status of the battery in time.

Abstract: A method for determining a charging time includes obtaining a maximum monomer voltage of a cell of a battery, and under a condition that the maximum monomer voltage is determined to be greater than or equal to a value, determining, based on a charging voltage of the battery, the charging time of the battery.

Abstract: A method for determining a remaining charging time of a battery. The method includes obtaining a first charging current and a second charging current. The first charging current is a present charging current of the battery, and the second charging current is a charging current of the battery when the battery is fully charged. The method further includes determining an average charging current value based on the first charging current and the second charging current, and determining the remaining charging time based on the average charging current value.

Abstract: This application provides a method and a device for estimating a remaining charging time of a battery, and a battery management system. The method includes: determining a minimum charging time of each type of battery cell at a Kth charging phase based on a charge request current value of each type of battery cell at the Kth charging phase; and determining the remaining charging time of the battery when the Kth charging phase of any type of battery cell in the battery is a target state-of-charge phase, where the remaining charging time of the battery is a smallest one of accumulation values, each accumulation value being an accumulation of minimum charging times of a type of battery cell in the battery at all charging phases.

Abstract: This application provides a method and a device for estimating a remaining charging time of a battery, and a battery management system. The method includes: determining a minimum charging time of each type of battery cell at a Kth charging phase based on a charge request current value of each type of battery cell at the Kth charging phase; and determining the remaining charging time of the battery when the Kth charging phase of any type of battery cell in the battery is a target state-of-charge phase, where the remaining charging time of the battery is a smallest one of accumulation values, each accumulation value being an accumulation of minimum charging times of a type of battery cell in the battery at all charging phases.

Abstract: The present invention relates to a cloud software service resource allocation method based on QoS model self-correction, the method comprising: step S1: performing online self-learning to obtain a QoS prediction model; step S2: collecting runtime data under a certain workload, and improving the accuracy of the QoS prediction model under a current workload through self-correction control; step S3: constructing a fitness function in combination with the quality of service (QoS) and the cloud resource cost (Cost), and searching for a target resource allocation scheme by using an improved particle swarm optimization algorithm; step S4: comparing the current resource allocation situation with the searched target resource allocation scheme to obtain a difference therebetween, and then adjusting resources according to a certain proportion; and step S5: repeating steps S2 to S4 until the current resource allocation situation is the same as the target resource allocation scheme which means that resource adjustment is

Abstract: A device and method for measuring amplitude of a scanning mirror are disclosed. The device includes a light source (20) for outputting an optical signal; a diaphragm (21) for modifying size and shape of a light spot of the optical signal output by the light source (20); a scanning mirror retainer for placing a scanning mirror (22) to be measured, the scanning mirror, after being retained, being able to periodically reflect the optical signal; a photoelectric sensor (23) including three or more sensing elements and configured to detect and collect the optical signal reflected by the scanning mirror (22); and a signal acquisition and processing unit (24) for processing a signal collected by the photoelectric sensor (23) to derive an amplitude of the scanning mirror (22). Therefore, it is possible to characterize the scanning mirror (22) before the scanning mirror (22) is used, determining performance of the scanning mirror (22).

Abstract: A bipolar plate of a proton exchange membrane fuel cell is prepared from graphite powder, thermosetting resin and an electrically conductive polymer. The electrically conductive polymer has good electrically conductive properties, and can be cured by heating, which improves the strength and air tightness while ensuring the electrical conductivity of the graphite/thermosetting resin composite bipolar plate. A method of preparing the bipolar plate is further provided, including dispersing the graphite powder in a first organic solvent to obtain a first mixture; dispersing the electrically conductive polymer in a second organic solvent to obtain a second mixture; uniformly mixing the first mixture and the second mixture followed by heating and drying to obtain a powder mixture; mixing, the powder mixture and the thermosetting resin followed by ball milling, thermal press curing, cooling and demolding to obtain the bipolar plate.