Nr Electric Co., Ltd

Nr Engineering Co., Ltd

Longi Solar Technology (taizhou) Co., Ltd.

Bsh Hausgeraete Gmbh

China Pharmaceutical University

Nr Electric Engineering Co., Ltd.

Zhangjiagang Duplus Chemical Co., Ltd.

Huawei Technologies Co., Limited

Jun Chen

Guang Wang

Qixue Zhang

Hui Shen

Huazhong Li

Wei Yan

Bin Li

Kai Wang

Hua Li

Jiyu Liu

Quanrong Shen

Debao Zhao

Yaoyao Ji

Zigang Guo

Jiasheng Chen

Shouping Zhong

Yong Wang

Peng Chen

Jie Zhang

Jinhui Chen

Huimin Wang

Xiangjian Shi

Weiqun Liu

Yuchun Wu

Weiwei Shao

Honglin Wang

Xiuwei Wu

Tao Sun

Guojie Li

Huijuan Wang

Yao Wang

Baoli Xu

A conductive interconnection member includes: a conductive layer (), and an insulating layer () and electrical connectors () located on one side of the conductive layer (). The conductive layer () is provided with a conductive circuit; the insulating layer () is provided with openings (), and the electrical connectors () are located in the openings () of the insulating layer (); the electrical connectors () include a first electrical connector () and a second electrical connector (); the first electrical connector () is used to be electrically connected to a first electrode () of a back contact solar cell () and the conductive circuit; the second electrical connector () is used to be electrically connected to a second electrode () of a back contact solar cell () and the conductive circuit; and the polarities of the first electrode () and the second electrode () are opposite.

Conductive interconnection member of imbricate assembly, imbricate assembly, and manufacturing method

The present disclosure discloses a manufacturing method and a manufacturing device for an interconnection piece. The manufacturing method comprises providing a solder strip, and performing forming treatment on the solder strip to obtain a plurality of structural solder strips; and providing a flexible insulating substrate, and compounding the plurality of structural solder strips on the flexible insulating substrate at intervals to obtain the interconnection piece. Each structural solder strip is provided with two soldering portions and a connecting portion located between the two soldering portions, and the connecting portion is respectively connected to the two soldering portions; at least a part of the connecting portion is located on the flexible insulating substrate, and the two soldering portions extend out of the flexible insulating substrate.

Manufacturing method and manufacturing apparatus for interconnection member

A back contact solar cell assembly includes at least one cell string including multiple back contact solar cells and multiple electrically conducting lines. Each first electrodes includes first main grid lines and first fine grid lines. Each second electrodes includes second main grid lines and second fine grid lines. Each electrically conducting lines includes a first part conductively connecting the first main grid line of a first back contact solar cell, and a second part conductively connecting the second main grid lines of a neighboring second back contact solar cell. The first part is provided with at least one deformation cushioning component. At the shadow face of the first back contact solar cell, in the direction where the second fine grid lines are provided, the minimum distance between the projection of the deformation cushioning component and the second fine grid lines is greater than or equal to 0.3 mm.

Back contact solar cell assembly

A bio-based moisture absorption and sweat discharging multifunctional finishing agent and a preparation method and application thereof is provided, a structural formula of which is:

Bio-based moisture absorption and sweat discharging multifunctional finishing agent and preparation method and application thereof

An automatic door device includes a driving motor and a transmission system. An input end of the transmission system is coupled to an output shaft of the driving motor, an output end of the transmission system is coupled to a door shaft, and the transmission system has a transmission link to transmit an output torque of the driving motor to the door shaft. A clutch mechanism is disposed on the transmission link of the transmission system. Accordingly, when the door is subjected to an external force, the transmission link between the door and the driving motor can be automatically disconnected, so that while an automatic door function implemented, it is ensured that a user may not be affected by the resistance brought by the automatic door device when the user opens/closes the door manually, thereby optimizing user experience.

Automatic door device and household appliance

The present invention discloses a method for detecting open phase of a startup/standby transformer based on optical CT. A startup/standby transformer in a power plant is in a no-load condition for a long time as a standby power supply. Once a single-phase open phase fault occurs, there is no significant change in the voltage phasor and voltage sequence component of each side. If not found in time, the defect may pose a great threat to the safe operation of the power plant. In the present invention, the optical CT is used to detect a three-phase current of the high-voltage side of the startup/standby transformer. If the current satisfies an open phase criterion, it is determined that an open phase fault occurs, and then, an alarm signal is given after a delay and an operator is informed to handle the fault in time. Therefore, the operation reliability of the startup/standby transformer system in the power plant is enhanced.

Method for detecting open phase of startup/standby transformer based on optical CT

The present invention discloses a method for quickly eliminating ferromagnetic resonance of a voltage transformer. The method includes: first sampling a three-phase voltage and an open-delta voltage of a voltage transformer; calculating a flux linkage corresponding to a zero-sequence voltage by means of an integral algorithm; and when detecting that ferromagnetic resonance occurs in the mutual inductor, further checking whether the absolute value of the flux linkage corresponding to the zero-sequence voltage or the absolute value of the open-delta voltage respectively falls within a set range, and if yes, starting a secondary resonance elimination loop for resonance elimination. The present invention also discloses a corresponding device for quickly eliminating ferromagnetic resonance of a voltage transformer. The present method and device accurately analyze and control resonance elimination trigger time based on a conventional secondary resonance elimination principle, and can effectively eliminate the impact of the core saturation of a voltage transformer on a resonance elimination process, thereby greatly improving the success probability of single resonance elimination.

Method and device for quickly eliminating ferromagnetic resonance of voltage transformer

The present invention relates to a type of aryl benzofuran amidated derivatives, the medical use thereof, and the preparation method; said derivatives have antioxidation activity, and xanthine oxidase inhibitory activity, and can be used for antioxidation and for preparing compositions, drugs and health products and treating gout and hyperuricemia.

Type of aryl benzofuran amidated derivative and medical use thereof

A method and apparatus for identifying an open phase of a circuit breaker on the basis of voltage. The method comprises: a protection apparatus measures three-phase voltages at two sides of a circuit breaker; respectively calculates a vector difference and an effective value of the voltages at two sides of the circuit breaker; when the phase voltages at two sides are both greater than 80% to 90% of a rated voltage, and the voltage vector difference at two sides of the one-phase or two-phase circuit breaker is greater than a set voltage, it is determined that the circuit breaker has an open phase; and actuates an alarming or tripping operation after a short time delay t.

Method and apparatus for identifying open phase of circuit breaker on basis of voltage

A relay protection method against LC parallel circuit detuning faults comprises the steps of: a relay protection device samples a current of a parallel LC, that is, a reactor and a capacitor, and samples a total current flowing through the whole LC; convert the current of the reactor into a current of an equivalent capacitor; calculate amplitudes of the current of the equivalent capacitor and a current of a realistic capacitor and calculate an amplitude of the total current flowing through the LC; calculate a current amplitude ratio of the equivalent capacitor to the realistic capacitor; and when the amplitude of the total current flowing through the LC is large enough, send an alarm signal or a trip after a setting time delay if the current ratio exceeds a preset upper and lower limit range. Also provided is a corresponding relay protection device.

Relay protection method and apparatus against LC parallel circuit detuning faults

A frequency-conversion differential protection method for an output transformer of a static frequency convertor system. The method comprises: a protection device measuring a three-phase current at each side of an output transformer of an SFC system; according to the connection manner of the output transformer, using a triangle side as a reference to conduct phase correction on a star side; at the same time, taking into account different secondary rated currents at each side of the transformer to adjust a balance coefficient of each side, so as to form sampling values of a correcting current and a differential current at each side, and using a startup and shut-down protection algorithm free from frequency influence in generator protection to calculate amplitude values of the correcting current, the differential current and a restraint current; and according to the magnitudes of the differential current and the restraint current, using the ratio restraint differential characteristic to achieve the frequency-conversion ratio differential protection of the output transformer. The present protection method is suitable for large-scale frequency change. Compared with the current quick-breaking protection, the sensitivity of internal failure detection in the output transformer is greatly improved.

Frequency-conversion differential protection method for output transformer of static frequency converter system

Embodiments of the present invention disclose a current source converter differential protection method, including: sampling, by a relay protection device, secondary side currents of current transformers on two sides of a protected current source converter, to obtain incomer-side three-phase currents, and outgoer-side three-phase currents; rectifying the incomer-side three-phase currents and the outgoer-side three-phase currents, to obtain an incomer-side input current and an outgoer-side output current which are equivalent; converting the incomer-side input current and the outgoer-side output current according to a current ratio of the current transformers on the two sides, to acquire a transient differential current and a transient restraint current; acquiring a differential current and a restraint current according to the transient differential current and the transient restraint current; and achieving differential protection according to the differential current and the restraint current. The embodiments of the present invention further disclose a relay protection device correspondingly.

Current source converter differential protection method and relay protection device

Growing community of inventors

Jiangsu, China

Jun Chen