Battery processing production line

The invention relates to the technical field of battery processing, and discloses a battery processing production line. The battery processing production line comprises a battery cell feeding device, a first transfer mechanism, a cutting device, a circuit board feeding device, a second transfer mechanism, a third transfer mechanism, a welding device, a fourth transfer mechanism, a bending mechanism, a conveying mechanism, a fifth transfer mechanism and an edge covering device. According to the battery processing production line, battery cell feeding, nickel sheet cutting, circuit board feeding, circuit board and battery cell welding, circuit board bending and coating of the coating box can be automatically completed, all procedures are in automatic butt joint, the automation degree is high, the working efficiency is improved, and the labor cost is reduced.

Power supply device and its designing method

Power supplier is in use for restraining signal interference generated in electronic equipment caused by fluctuant earth current. The power supplier includes a transformer, a first side circuit, second side circuit, and grounded conductor. Through cascaded a capacitor and an inductor, the method connects the first side circuit and the second side circuit to grounded conductor. Added capacitor can filter out noise and interference in DC and low frequencies components as well as help to maintain representation of lowered electromagnetic interference. Added inductor is in use for getting rid of noise in high frequency and interference. Most part of noise and interference signal is not possible to pass through conduction route formed. The result of the grounded method is that interfere degree is reduced greatly.

Partial discharge measurement device for GIS device under site impulse voltage

The invention discloses a partial discharge measurement device for a GIS device under site impulse voltage. The device is used for conducting partial discharge measurement on the GIS device when the GIS device conducts site impulse withstand voltage experiments, the device is used for detecting insulation defects which may exist in the GIS device, and the reliability of the safe operation of the GIS device is improved. The partial discharge measurement device comprises open-loop type rogowski coil sensors, a double-layer shielding cable, a signal differentiator, a signal summer, an attenuator assembly, a filter assembly, a transient voltage clamp device, an I/O data acquisition card and software for measuring and analyzing partial discharge under impulse voltage. The partial discharge measurement device suitable for the GIS device on a site can accurately measure pulse current waveforms of partial discharge, can also more actually obtain the discharge amount of a device with an insulation ...

Discharge monitoring device for two-way switch cabinet

The invention discloses a discharge monitoring device and method for a two-way switch cabinet, and the method comprises the steps: enabling a TEV sensor to be disposed on the surface of the two-way switch cabinet, so as to collect a transient ground voltage signal; the AE sensor is arranged in the two-way switch cabinet to collect ultrasonic signals; the signal processor is respectively connected with output ends of the TEV sensor and the AE sensor so as to carry out band-pass filtering, low-noise amplification and frequency reduction detection on the transient ground voltage signal and the ultrasonic signal, and the ARM processor is connected with an output end of the signal processor so as to identify whether one of a comprehensive change trend delta P% or a transverse comparison level delta m% is greater than a preset percentage; if yes, an early warning signal is sent out.

Charging method for battery

The invention discloses a charging method for a battery. The charging method comprises the following steps of providing a charging voltage to carry out a charging procedure for the battery; then determining whether a charging control variable reaches an adjustment value or not; adjusting the charging voltage by a first voltage differential value if the charging control variable reaches the adjustment value and continuously carrying out the charging procedure to the battery; then determining whether a healthy state value of the battery is smaller than or equal to a critical healthy state value or not; and finally increasing the charging voltage by a second voltage differential value if the healthy state value of the battery is smaller than or equal to the critical healthy state value, and continuously carrying out the charging procedure to the battery. The charging method for the battery can effectively alleviate a recession rate of the battery and increase efficiency of the battery, and ...

Trench semiconductor power device and preparation method thereof

The invention relates to a trench semiconductor power device and a preparation method thereof. The method comprises the following steps: a trench masking is used for eroding an extension layer on a substrate so as to form a plurality of grid trench, and a doping agent is injected to respectively form a source region and a base region; a contact hole masking is used for eroding an interval medium so as to form a contact trench, and the contact trench is filled to form a trench plug; and a metal masking is used for performing the metal erosion to form a metal under layer and a connection line. By adopting the preparation method, the procedures for utilizing the source region masking and the basic region masking can be reduced, and the source region and the basic region can be formed throughthe direct injection, so the parts with novel structure can be prepared with fewer preparation procedures, and the quality and the reliability of the parts can be improved.

Serratia entomopathogenic nematodes symbiotic bacteria

A Serratia genus entomopathogenic nematodes fungal component belongs to the field of biotechnology. The microorganism is the fungal component strain DZ0503SBSH1-2 separated from the intestinal tract of entomopathogenic nematodes Heterorhabditidoides chongmingensis, which is preserved at China typical culture preservation center with a preservation identification serial number of CCTCC M203102 and a preservation date at 20080701. Tested, the DZ0503SBSH1-2 strain fermentation liquor has better insecticidal effect, wherein, the mortality of each group in a 16-hour is 80%, the insecticidal effects of the bacterial strain fermentation liquor after fermentation 30 hours and 48 hours are both better than the other groups, and the larva all dead after being processed by the fermentation liquor for 17 hours. The bacterial cells and fermentation liquor has stronger toxicity to the insect larvae, and has wide development and utilization prospects.

Method for evaluating discharge risk degree of two-way switch cabinet

The invention discloses a two-way switch cabinet discharge risk assessment method, and the method comprises the steps: enabling a TEV sensor and an AE sensor to collect a transient ground voltage signal and an ultrasonic signal of a two-way switch cabinet respectively, and enabling the transient ground voltage signal to be weighted, and enabling the ultrasonic signal to be weighted; the method comprises the following steps: acquiring transient ground voltage signal intensity PT and ultrasonic signal intensity PA based on a transient ground voltage signal and an ultrasonic signal, respectively calculating intensity variation delta PT% and delta PA% of the transient ground voltage signal and the ultrasonic signal before and after time delta t, and respectively calculating levels delta mT% and delta mA% of the transient ground voltage signal and the ultrasonic signal, which are greater than the average intensity of equipment; whether one of the comprehensive change trend delta P% or the transverse ...

Portable partial discharge detecting and diagnosing device

The invention discloses a portable partial discharge detecting and diagnosing device. The device comprises a partial discharge detector, a cable, a pre-sensor and a charger device, wherein the partial discharge detector comprises a lower computer and an upper computer; the lower computer comprises a simulation unit module, an FPGA module, an ARM module, a clock and reset module and a power management module; the upper computer is a Linux industrial personal computer. The portable partial discharge detecting and diagnosing device is provided with a 14-bit 100MHz two-channel acquisition system having the maximum storage depth of 64Mbit; the display of the characteristic spectrum of defects and the model identification of faults can be completed accurately in such a manner of PRPD clustering analysis in combination with impulse waveform time-frequency analysis; meanwhile, a radio-frequency sensor and an ultrahigh-frequency sensor are simultaneously provided, and the pulse current detection ...

Trench semiconductor power device and preparation method thereof

Method and circuit for improving display quality for liquid crystal display screen

The invention is a method and circuit for improving the display quality of LCD screen, synchronizing the vertical synchronizing signal of video signal supplied to a LCD system with a vibrating signal generated by a burst DC-AC converter driving the tube of the system, thus reducing interference noise appearing on the LCD screen. The circuit of the invention mainly includes two semiconductor switches, impedance component and diode, to implement the synchronization.

Method for manufacturing flute with thick insulating bottom and semiconductor device thereof

The invention discloses a method for manufacturing a flute with a thick insulating bottom and a semiconductor device thereof. The method comprises the following steps of: eroding an epitaxial layer on a substrate by using a flute mask to form a plurality of grid flutes, and depositing nitride on the side wall and the upper edge of the flute to generate a third oxidation layer at the bottom of the flute; removing the nitride, and depositing polycrystalline silicon in the flute to generate a fourth oxidation layer so as to finish the manufacture of the flute; and forming a base area and a source area by using a base area mask and a source area mask respectively, forming a contact flute and a flute plug by using a contact hole mask, and performing metal erosion by using a metal mask so as to form a metal cushion layer and finish the manufacture of the device by wiring. The manufacturing method ensures the consistency of side wall grid oxidation layers so that equivalent electric parameters ...

Charging method and charging device

The invention relates to a charging method and a charging device. According to the charging method, a rechargeable battery is charged to a first preset voltage, and then the rechargeable battery is charged to a second preset voltage. Specifically, the method comprises the steps that: (a) a first preset current is regarded as a charging current, and constant-current charging is carried out upon the rechargeable battery according to the first preset current, until the rechargeable battery is charged to the first preset voltage for a first time; (b) a current difference is subtracted from a charging current consumed when the rechargeable battery is charged to the first preset voltage in a previous time, such that a new charging current is obtained; constant-current charging is carried out upon the rechargeable battery according to the new charging current, until the rechargeable battery reaches the first preset voltage again; (c) step (b) is repeated until the new charging current is equal ...

Device for measuring and analyzing partial discharge under surge voltage

The invention discloses a device for measuring and analyzing the partial discharge under surge voltage. Partial discharge measurement is conducted on a GIS while on-site impulse withstand voltage is conducted on the GIS, the device is used for detecting insulation defects possibly existing in the device, and the safety running reliability of the GIS is improved. The device comprises an open-loop type radio frequency current sensor, a dual-layer shielding cable, an attenuator suite, a filter suite, a transient voltage clamping device, an I/O data acquisition card and software for measuring and analyzing partial discharge under surge voltage. The open-loop type radio frequency current sensor is used for inputting acquired signals to the data acquisition card through the attenuator suite, the high-pass filter suite and the transient voltage clamping device in sequence by means of the dual-layer shielding cable. Digital signals acquired by the I/O data acquisition card are displayed and are ...

Transistor structure with thermal protection function

Structure of the disclosed transistor comprises primary N type metal oxide semiconductor (MOS) transistor, secondary P type MOS transistor and thermal protection unit. Drain pole and grid pole of P type MOS transistor are connected to grid pole of N type MOS transistor and thermal protection unit. Integral architecture of the two transistors is similar to N type MOS transistor. Source pole of P type MOS transistor is as grid pole of the disclosed transistor. Drain pole and source pole of the N type MOS transistor are as drain pole and source pole of the disclosed transistor. Based on sensing quantity of heat, interrupting current passing through transistors, and turning on/off transistor, the thermal protection unit prevents failures occurred in the two MOS transistors of the disclosed transistor caused by heat.

Transformer induced switching impulse voltage generation device triggered by IGBTs

The invention discloses a transformer induced switching impulse voltage generation device triggered by IGBTs. The device comprises an AC power supply, a voltage regulator, a current-limiting resistor, a rectifier module, an IGBT module, a main capacitor and a transformer. The power supply charges the main capacitor through the IGBT module, and the IGBT module is turned on through triggering, so that the main capacitor discharges a primary side of the transformer; a switching impulse voltage is induced on a secondary side and measured by an impulse high-voltage bleeder, the impulse high-voltage bleeder is connected with an oscilloscope through a coaxial cable, and the waveform of the switching impulse voltage is displayed on the oscilloscope. By the adoption of the device, non-oscillating and oscillating switching impulse voltages can be generated; except the transformer and the bleeder, all the other components operate in a low-voltage environment, so that the generated voltage is low in ...