88results about How to "Improve overcurrent capability" patented technology

The invention relates to a high-rate total-tab type lithium battery and a preparation method thereof. The lithium battery comprises a hollow battery housing with openings in the two ends, a battery cell, an upper cover plate assembly and a lower cover plate assembly, wherein the battery cell is arranged in the battery housing, and the upper cover plate assembly and the lower cover plate assembly are arranged at the two ends of the battery housing respectively and seal the openings in the two ends respectively; the upper cover plate assembly comprises a positive pole terminal, and the lower cover plate assembly comprises a negative pole terminal. The battery cell is of a multi-layer winding structure formed by winding a separator, a positive plate, a separator, a negative plate and a separator in sequence; a positive plate electricity storage part coated with positive materials is arranged at one end of the positive plate, and a positive plate blank part is arranged at the other end; anegative plate electricity storage part coated with negative materials is arranged at one end of the negative plate, and a negative plate blank part is arranged at the other end; the positive plate blank part and the negative plate blank part are arranged at the two ends of the battery cell respectively and welded to the two ends to form a positive total tab and a negative total tab respectively.The positive total tab and the negative total tab are connected with the positive pole terminal and the negative pole terminal respectively.

The invention relates to the technical field of planar transformers, in particular to a planar transformer, electronic equipment and a production method of the planar transformer. The planar transformer comprises a first magnetic core, at least one PCB (printed circuit board) winding, at least one pancake coil and a second magnetic core. The first magnetic core, all the PCB windings, all the pancake coils and the second magnetic cores are coaxially assembled into the planar transformer. On the one hand, a primary/secondary coil formed by the PCB windings and the pancake coils has higher overcurrent capability compared with the traditional winding coil; on the other hand, when the primary/secondary coil with more turns is required to be designed, the number of the turns of the pancake coilscan be increased/decreased transversely, the assembling of multiple layers of the primary/secondary coils can be relatively avoided; a proximity effect and stray capacitance are further reduced; thepower density is increased; and a temperature rise is reduced.

The invention provides a power vehicle window controller applying an MOS tube. The MOS tube is connected in serial with an output circuit of a controller circuit; a grid G thereof is connected with a control terminal of a microprocessor; a drain D thereof is connected with normally closed contacts of two normally open relays; and a source S thereof is connected with a sampling resistor and the control terminal of the microprocessor. When the power vehicle window controller circuit is turned on or turned off, a vehicle window motor can generate a startup heavy current peak value or a back-EMF which impacts relay contacts during the actuation, causes the phenomena of burning or bonding the contacts, and leads to the failure of the operation. The power vehicle window controller utilizes a microprocessor control circuit to switch on the MOS tube after the relay contacts are actuated; and the MOS tube has a rapid switching speed and can entirely bear high-power impact generated by the motor so that the power vehicle window controller can be widely applied to various large-scale vehicles with automotive electrical appliance adopting a 24V power supply.

The invention relates to an oil-immersed water-cooled high-power electric and electronic capacitor, which consists of a shell, a capacitor core set and a cover plate. A cooling device is arranged at a gap between the capacitor core set and the shell; a cover plate assembly is provided with a cooling water inlet interface and a cooling water outlet interface which are connected with an external cooling water pipe; and two ports of the external cooling device are respectively communicated with the water inlet interface and the water outlet interface on the cover plate assembly. When the capacitor works, heat produced by the capacitor is dissipated in the form of heat radiation and heat produced inside the capacitor is brought away when external cooling water flows through the capacitor through the interface on the cover plate assembly, so internal temperature rise of the capacitor can be reduced and a temperature upper limit in the working environment of the capacitor is provided. The invention has the advantages of enhancing overcurrent capability of the capacitor, prolonging the service life of the capacitor, reducing the volume of the capacitor and lowering the manufacturing cost of the capacitor.

The invention provides a leaf spring. The leaf spring comprises two connecting plates and a plurality of elastic pieces. Each elastic piece comprises an inner contact plate, a transition plate and an outer contact plate which are connected in sequence, wherein the two ends of the transition plate are fixedly connected with the two connecting plates respectively, a space exists between every two adjacent elastic pieces, and the first circumferential face where the inner contact plates of all the elastic pieces are located and the second circumferential face where the outer contact plates of all the elastic pieces are located are coaxially arranged. The leaf spring increases the conductive contact area, and has better current passing capacity.

The invention provides a battery assembly. The battery assembly comprises at least one first battery module, at least one second battery module and a conductive element, wherein the first and second battery modules are arranged separately, each battery module comprises at least two batteries, and each battery is provided with a positive electrode and a negative electrode; and the conductive element comprises a first part connected in parallel with the two positive electrodes of the at least two batteries of the first battery module, a second part connected in parallel with the two negative electrodes of the at least two batteries of the second battery module, and a third part connected in series with the positive electrode of one battery of the first battery module and the negative electrode of one battery of the second battery module. Compared with the prior art, the battery assembly has the advantages that: series connection and/or parallel connection among a plurality of batteries can be realized by one integrated conductive element, and the connecting parts of the conductive element are flat, so that the conductive element can bear high over current. Furthermore, the number of the flat connecting parts can be multiple, so that the over current capacity of the conductive element is enhanced.

The invention provides an electrifying buffer circuit and an electrombile motor control system. The electrifying buffer circuit comprises a digital signal processor, an MOSFET drive circuit, a voltage sampling circuit and a buffer power loop. The buffer power loop comprises a power resistor and an MOSFET. The voltage sampling circuit is used for sampling the voltage across the two ends of a main contactor. The digital signal processer is used for sending drive signals to the MOSFET drive circuit to drive the MOSFET to be connected when a buffer electrifying instruction is received and the sampled voltage meets the buffer start starting conditions; when the sampled voltage meets the buffer start finishing conditions, the digital signal processer stops sending the drive signals to the MOSFET drive circuit, and after a Cgs of the MOSFET finishes discharging, signals enabling the main contactor to be closed are output. According to the electrifying buffer circuit and the electrombile motor control system, through the strong overload capacity of the MOSFET, a buffer contactor can be effectively replaced to achieve fast electrifying of capacitive load of a main loop of an electrombile power system.

The invention discloses an oil-immersed copper foil capacitor and a manufacturing technology thereof, and relates to the technical field of capacitors. The oil-immersed copper foil capacitor comprises a core, a copper material lead-out end, an insulating sheath, a sealing plate, oil and a shell, wherein the copper material lead-out end can be welded or adhered to two side polar surfaces of the core according to the area of the lead-out end; the insulating sheath sleeves between the core and the shell to form an insulating band; the sealing plate penetrates through the copper material lead-out end and the shell for sealed combination; the contact part of the copper material lead-out end is welded for sealing, and epoxy filling sealing is executed. The oil-immersed copper foil capacitor is small in size, low in loss, high in heat dissipation property, high in overcurrent and stable in voltage resistance and can bear high frequency and ultrahigh frequency.

The invention relates to the technical field of electromagnetic heating devices, in particular to an electromagnetic heating controller. The electromagnetic is characterized in that a circuit board is provided with a three-phase supply input terminal, a three-phase rectifying module, a filter capacitor, a filter inductor, an IGBT (insulated gate bipolar transistor) module, a resonant capacitor, a power output terminal, an IGBT driving circuit, a power transformer, a control circuit, a radiator, an input mutual inductor and an output mutual inductor; the three-phase supply input terminal, the three-phase rectifying module, the filter capacitor, the IGBT module, the resonant capacitor and the power output terminal are sequentially bridged and connected through red copper bars; the filter inductor is respectively bridged and connected with the three-phase rectifying module and the filter capacitor through red copper bars; and the IGBT module is bridged and connected with the power output terminal through a red copper bar. By adopting the red copper bar bridging scheme, the temperature is low; the temperature resistance is high, and the production process is simple; and the thickness and width of the copper bars for connecting the circuit have no limit, so the over current capability is strong, and the copper bars can be used for the electromagnetic heating controller with power of 8-30 KW, especially for the electromagnetic heating controller with power more than 30KW.

This invention discloses a pin structure component of a module supply including a punch pin, a surface pasted pin and high temperature insulation piece characterizing that the insulation piece locates the pins according to the pin position definition of module supply industrial standard to get the component, which has the advantages of punch pins and total surface pasted pins, and the punch one used for the supply input and output is good in flowing current and a fixed mechanical connection strength, and the surface pasted pin used for assistant function pins occupies less resource of PCB and two of which are combined to one unit after plastic package to strengthen the mechanical strength.

The invention discloses a packaging method of an intelligent power module and the intelligent power module. The method comprises the steps: carrying out the conductive paste printing on the outer surface of a first resin layer after the intelligent power module completes first resin layer packaging, wherein a power chip in the intelligent power module is arranged in the first resin layer; and carrying out second resin layer packaging on the intelligent power module printed by the conductive paste to obtain a packaged and formed intelligent power module, wherein a driving chip of the intelligent power module is placed in the second resin layer. The technical problems that a traditional intelligent power module is electrically connected in a lead bonding mode, so that stray inductance is high, and the current bearing capacity is insufficient are solved.

The invention provides a high-linearity attenuator. The high-linearity attenuator comprises a coarse adjustment attenuation module, a fine adjustment attenuation module, a high-voltage protection module and a low-voltage protection module, the coarse adjustment attenuation module performs coarse adjustment of attenuation on the input differential signal and comprises at least one stage of coarse adjustment attenuation unit, and the coarse adjustment attenuation units are sequentially cascaded and have equal equivalent load impedance; the fine adjustment attenuation module performs attenuationfine adjustment on the signal output by the coarse adjustment attenuation module; the high-voltage protection module and the low-voltage protection module are connected to the input end and the outputend respectively; the coarse adjustment attenuation module and the fine adjustment attenuation module comprise high-linearity switches and resistors, attenuation adjustment is achieved based on on-off of the switches, and the working states of the switches comprise a high-voltage-withstanding partition state and an on-state of a low-on-resistance; and the resistor in the coarse adjustment attenuation module is a metal resistor. The high-linearity attenuator has the advantages of being high in precision, easy to expand the attenuation range, high in linearity, large in bandwidth, high in powerendurance capacity and the like.

The invention relates to electronic equipment, an electric connector and a manufacturing method thereof, the electric connector comprises an insulating seat, a first terminal strip, a second terminal strip and a conducting strip, the insulating seat is provided with a first surface and a second surface which are opposite to each other, the first terminal strip is connected with the insulating seat and is exposed on the first surface, the first terminal strip comprises at least two first power supply terminals, and the second terminal strip comprises at least two second power supply terminals. And the second terminal strip is connected with the insulating seat and exposed on the second surface, the second terminal strip comprises second power supply terminals in one-to-one correspondence with the first power supply terminals, the conducting strip is connected with the insulating seat, and the conducting strip is electrically connected with the first power supply terminals and the second power supply terminals. According to the electronic equipment, the electric connector and the manufacturing method of the electric connector, the first power supply terminal and the second power supply terminal which are correspondingly arranged in the first terminal row and the second terminal row of the electric connector are electrically connected through the conducting strip, so that the cross sectional area of electrification is improved through the conducting strip, the overall impedance is reduced, the overcurrent capacity of the electric connector is improved, and the service life of the electric connector is prolonged. The charging efficiency is improved.

The invention discloses a method for implementing increase of current capacity by a common circuit board in the technical field of battery management. The method comprises the following steps of: S1,selecting a specification copper foil, and windowing on the surface of the copper foil to form a dense net shape; S2, uniformly coating solder paste on each node of the net-shaped copper foil, and carrying out inclined connection to form an inclined solder paste network; S3, carrying out furnace passing processing on the copper foil coated with the solder paste, so that after being molten, the solder paste is shrunk and automatically absorbed on the windowed net-shaped copper foil; and S4, carrying out processing repair on the copper foil subjected to furnace passing processing so as to form solder webbing with a uniform thickness. According to the invention, when the solder paste passes through a furnace, the solder paste is automatically shrunk after being molten and can be absorbed ontothe windowed net-shaped copper foil to form the solder webbing with the uniform thickness, soldering tin is not cut off after being solidified and the soldering tin is large in thickness, so that overcurrent capacity of the copper foil is increased by multiple times; and moreover, according to the method, production steps are not increased, generated benefits are huge, and the defect of excessively low overcurrent capacity of a common copper foil is overcome.

The invention discloses an Ethernet power supply circuit applied to network monitoring equipment. The Ethernet power supply circuit comprises a proportional plus derivative (PD) controller, a DC (direct current)-DC controller, a power switch field effect transistor (FET) tube, a transformer, a rectifying circuit and a voltage detection circuit; an inner metal-oxide semiconductor field effect transistor (MOSFET) tube is arranged in the PD controller; the DC-DC controller, the power switch FET tube and the transformer are sequentially connected to form a DC-DC converter; the rectifying circuit is in feedback connection with the DC-DC controller through the voltage detection circuit; an outer MOSFET tube is connected in parallel with the inner MOSFET tube in the PD controller, and is connected with a level switching circuit; and the PD controller is connected to the level switching circuit. The current through capacity between control input ground (GND) and the ground (GND) of the level switching circuit is improved, and power for the PD controller is saved by 80 percent, so that the PD controller cannot be damaged due to overheat, and the maximum power which can be output by the circuit is improved further.

The invention discloses a jack electric contact assembly and an electric connector. The jack electric contact assembly comprises a sleeve and an elastic contact piece, wherein the elastic contact piece comprises elastic piece parts forming a cage shape and connecting rings connected to two ends of the elastic piece parts, and the elastic piece parts and the connecting rings are inserted into the sleeve; each elastic sheet part is provided with a plurality of abutting parts used for abutting against pin terminals inserted into the elastic sheet part in the axial direction, connecting parts usedfor connecting every two adjacent abutting parts, and positioning parts abutting against the sleeve are convexly arranged on the outer walls of the connecting parts. According to the jack electric contact assembly, the current passing capability of a single electric connector can be improved, meanwhile, the elastic contact piece is positioned and installed in the sleeve, and the connection between the sleeve and the elastic contact piece is optimized.

The invention is suitable for the display technology field and provides a driving circuit, a driving method and a display device. Two identical driving data under a specific gray level are outputted through a control module, one driving data is processed into two identical driving voltages by a source driving module, the two identical driving voltages are then outputted, the other driving data isprocessed into an analog voltage by a digital-to-analog conversion module, magnitudes of one driving voltage and the analog voltage are determined through a voltage comparison control module, when theone driving voltage is less than the analog voltage, the source driving module is controlled for improving a voltage value of the driving voltage, and thereby the driving voltage and overcurrent capability when a data line led out by the source driving module becomes a weak line can be improved, the pass rate of display panels can be effectively improved, and production cost is reduced.

The invention belongs to the capacitor technology field, and especially relates to a coupling capacitor. The technical problems are solved that present technical design is not reasonable and stability is poor. The coupling capacitor comprises a cylindrical metal housing. A winding core is arranged in the metal housing. A first electrode with an end part extending out from the winding core is arranged at one end of the winding core, and a second electrode with an end part extending out from the winding core is arranged at the other end of the winding core. The coupling capacitor is characterized in that an adhesive tape layer coating the winding core is arranged on the winding core. Filling packaging layers are arranged between one end of the metal housing and the winding core and between the other end and the winding core respectively. Compared with the prior art, the coupling capacitor is advantageous in that practicality is strong, the coupling capacitor is stable and reliable, the high-frequency loss is small, the over-current capability is strong, the temperature drift is small, and the temperature of the whole capacitor is low.

The invention provides a cable connector structure which comprises a male connector and a female connector, wherein the male connector comprises a male conductive contact pin electrically connected with a cable core wire, a male rubber coating fixedly connected with a cable insulating layer, a male plug plastic connected with the male conductive contact pin, a connecting male seat connected with the male plug plastic, and a male lock catch connected with the connecting male seat; the female connector comprises a female conductive contact pin electrically connected with the cable core wire, a female base plastic connected with the female conductive contact pin, and a female connector connected with the female base plastic; and the male connector and the female connector are connected and matched through a male connector lock catch. The cable connector structure is convenient to connect, high in connection strength, capable of effectively avoiding poor contact at the position of the connector and excellent in overcurrent capacity.