Abstract: A time alignment method for a differential protection device, the differential protection device and a differential protection system are disclosed. The time alignment method includes obtaining a plurality of current sampled values and a count value of each current sampled values; resampling the plurality of current sampled values with sampling frequency of J points/cycle to obtain a plurality of current resampled values; and performing Fourier transform on the plurality of current resampled values to obtain a plurality of temporally arranged current Fourier values, the plurality of current Fourier values includes a reference current Fourier value corresponding to the sampling moment of the current sampled value whose count value is the first value in the plurality of current sampled values, and the reference current Fourier value is determined based on the reference current resampled value and the J?1 current resampled values that temporally arranged before the reference current resampled value.

Abstract: An ultrasonic welding head comprises a welding head main body and first welding teeth; the welding head main body is provided with a welding surface, the first welding teeth protruding from the welding surface; the first welding teeth comprises a plurality of tooth parts, the plurality of tooth parts respectively being a first tooth part to an m-th tooth part which are successively arranged in the protruding direction of the first welding teeth; the n-th tooth part is arranged on the end surface of the end of the (n?1)th tooth part away from the welding surface, the end surface of the end of the (n?1)th tooth part away from the welding surface exceeding the n-th tooth part, and 2?n?m. An ultrasonic welding device, an electrode assembly, a battery cell, a battery, and an electrical device.

Abstract: A battery cell, a battery, and an electric device. The battery cell comprises: a housing assembly, which comprises a housing and a cover plate, wherein the housing has an opening, the cover plate covers the opening, the cover plate has a peripheral side surface, the peripheral side surface and/or the housing is provided with a groove, a connecting portion for sealing the opening is formed between the housing and the cover plate, and the connecting portion is at least partially accommodated in the groove; an electrode terminal, the electrode terminal being arranged on the housing or the cover plate; and an electrode assembly, the electrode assembly being arranged in the housing and being electrically connected to the electrode terminal.

Abstract: The present invention relates to a pyrazolo[1,5-a]pyridine derivative, a preparation method therefor, and a composition and a use thereof. Specifically, the present invention relates to the compound of formula (I) and the use thereof for the treatment and/or prevention of wild type, gene-fusion type (including but not limited to KIF5B, CCDC6 and NCOA4) and mutant type (including but not limited to V804, G810 and M918) RET kinases-related diseases, including diseases or conditions mediated by RET kinase.

Abstract: A system for wireless transmission of power in deep subsurface monitoring includes a casing, an oscillating current source configured to energize the casing, and a wireless telemetry module disposed on the casing. The wireless telemetry module includes a shell, a toroidal antenna disposed within the shell and configured to collect electrical energy from the energized casing, a telemetry transceiver control unit disposed within the shell, a battery pack disposed within the shell, a downhole signal acquisition unit disposed within the shell, and a sensor interface disposed within the shell. The battery pack is configured to store the collected electrical energy. The telemetry transceiver control unit is configured to generate a binary code to drive the toroidal antenna.

Abstract: A film tearing device for tearing a protective film from a workpiece comprises a sucking component, a clamping component, and a drive component. The sucking component is configured for lifting a tongue of the protective film from the workpiece, and the tongue is separate from the workpiece. The clamping component is configured for clamping the tongue lifted by the sucking component. The drive component is configured for moving the sucking component and the clamping component. After the clamping component clamps the tongue, the drive component moves the clamping component and the tongue, to tear the protective film off from the workpiece. By lifting tongue from the workpiece in advance, it is helpful to reduce the probability of the clamping component and the workpiece coming into contact, thereby reducing the probability of the workpiece being scratched.

Abstract: Provided are a data alignment method, a differential protector, and a differential protection system. The data alignment method comprises: obtaining first sampled current data from a first sampling device; receiving a second message from a second differential protector, the second message comprising second sampled current data and its sampling time stamp, first time information of the second differential protector related to a difference in time of reception from receipt of the first message to a second time node, and second time information of the second differential protector related to a second transmission processing delay from the second time node to transmission of the second message; when time synchronization is maintained, calculating and storing a time calculation deviation between a third time node and a first calculated value of the second time node; when time synchronization is lost, determining the third time node according to the stored time calculation deviation.

Abstract: A time alignment method for a differential protection device, the differential protection device and a differential protection system are disclosed. The time alignment method includes obtaining a plurality of current sampled values and a count value of each current sampled values; resampling the plurality of current sampled values with sampling frequency of J points/cycle to obtain a plurality of current resampled values; and performing Fourier transform on the plurality of current resampled values to obtain a plurality of temporally arranged current Fourier values, the plurality of current Fourier values includes a reference current Fourier value corresponding to the sampling moment of the current sampled value whose count value is the first value in the plurality of current sampled values, and the reference current Fourier value is determined based on the reference current resampled value and the J?1 current resampled values that temporally arranged before the reference current resampled value.

Abstract: Provided are a data alignment method, a differential protector, and a differential protection system. The data alignment method comprises: obtaining first sampled current data from a first sampling device; receiving a second message from a second differential protector, the second message comprising second sampled current data and its sampling time stamp, first time information of the second differential protector related to a difference in time of reception from receipt of the first message to a second time node, and second time information of the second differential protector related to a second transmission processing delay from the second time node to transmission of the second message; when time synchronization is maintained, calculating and storing a time calculation deviation between a third time node and a first calculated value of the second time node; when time synchronization is lost, determining the third time node according to the stored time calculation deviation.

Abstract: The present invention relates to a pyrazolo[1,5-a]pyridine derivative, a preparation method therefor, and a composition and a use thereof. Specifically, the present invention relates to the compound of formula (I) and the use thereof for the treatment and/or prevention of wild type, gene-fusion type (including but not limited to KIF5B, CCDC6 and NCOA4) and mutant type (including but not limited to V804, G810 and M918) RET kinases-related diseases, including diseases or conditions mediated by RET kinase.

Abstract: Disclosed is device for calibrating oil-water two-phase flow sensor, the device includes a wellbore model, an oil-water separation mechanism, an oil-water mixing mechanism, an oil inlet mechanism and a water inlet mechanism, the oil-water separation mechanism has a mixture inlet, an oil outlet, and a water outlet. The beneficial effect of the technical scheme proposed in the disclosure is: the oil-water mixture flowing out of the wellbore model is separated by an oil-water separation mechanism, and the separated oil and water are introduced into the oil-water mixing mechanism through an oil inlet mechanism and a water inlet mechanism, respectively, for remixing, the oil-water mixture formed by re-mixing enters the wellbore model, and enters the next cycle, which can realize the reuse of oil and water, the miniaturization of the device, and reduction of the production cost of the device.