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136results about How to "Flexible wiring" patented technology

A. C. brushless double-fed motor

Provided is an ac blushless double-feed motor relating to ac motor field and aiming to overcome defect of blushless double-feed speed regulating motor. The present invention comprises a stator and a rotor. The rotor winding is composed of variable-pole winding which has different pole-pairs number of p1 and p2. Coil type windings are provided on the rotor. The connection between the coil type winding coils is common m phase symmetirical winding with respect to pole-pairs number p1 and p2. The number z of rotor grooves placing the coil type winding coils satisfies relation: z is equal to p1 adding p2, wherein m is integer equal to or more than 2, p1 or p2 is positive integer. The present invention uses winding 'tooth harmonic' theory of ac motor to configure rotor windings so as to make the rotor winding of high conductor utilization rate. The effect of two sets of windings can be completely realized by only one set of winding, thus the motor structure is simplified, the volume is reduced. The wire connection is flexible, the rail manufacture technic is easy. The invention is particularly applicable for large motor.
Owner:HUAZHONG UNIV OF SCI & TECH +1

Flat cable, flat cable sheet, and flat cable sheet producing method

A flat cable includes a signal line extending in a longitudinal direction, a thin dielectric sheet with which the signal line is coated and that has plasticity, a pair of spaced apart ground layers extending in the longitudinal direction and sandwiching the dielectric sheet in its thickness direction, and insulators that coat the pair of ground layers so that they are not exposed to the outside. The cross-sectional size of the signal line in a direction orthogonal to the longitudinal direction, the thickness and width of the dielectric sheet, and so forth are selected to obtain a predetermined characteristic impedance for the cable. Each of the pair of ground layers is sized so as to be substantially wider than the signal line.
Owner:SONY CORP

Busway jack box with high safety performance

The invention relates to a busway jack box with high safety performance. The jack box comprises a box body, wherein a jack seat, pins and a support positioning mechanism are arranged at the bottom of the box body; a locking mechanism is respectively arranged on two sides of the box body; the jack seat is fixed at the bottom of the box body through a fixed seat of the jack seat, and the pins can run through horizontal fixed grooves; a jack seat gasket is arranged at the bottom of the support positioning mechanism, and is arranged around the inner wall of the horizontal fixed groove, and is fixedly connected with the fixed seat of the jack seat through screws, so that the jack box can be jacked accurately, conveniently and quickly, and the safety and reliability of hot plugging can be ensured.
Owner:鼎圣集团有限公司

Novel high-speed and high-precision multi-axis servo motion controller circuit

ActiveCN105242640AStrong ability to upgradeLow costNumerical controlMicrocontrollerHigh resistance
The invention belongs to a servo motion controller circuit, and specifically relates to a novel high-speed and high-precision multi-axis servo motion controller circuit. The circuit comprises an ARM-based intelligent control unit, SCM intelligent control modules, a USB bus communication unit, a data storage unit, an external network communication unit, a power management unit, a debugging and simulation unit, a passive crystal oscillation unit, and a human-computer interaction unit, wherein the USB bus communication unit is connected with N single-chip microcomputer intelligent control modules and is further connected with the ARM-based intelligent control unit through a USB bus, and the ARM-based intelligent control unit is connected with the data storage unit, the external network communication unit, the power management unit, the debugging and simulation unit, the passive crystal oscillation unit and the human-computer interaction unit. The novel high-speed and high-precision multi-axis servo motion controller circuit of the invention has the advantages of low cost, low power consumption, small size, high expansibility, good real-time performance, fast response, simple system wiring, high reliability, long life, and high resistance to electromagnetic interference.
Owner:BEIJING AUTOMATION CONTROL EQUIP INST

Surface sheet winding shaping method of composite material

InactiveCN1911632AAchieve winding moldingWind evenlyProgramme controlComputer controlFiberData file
The present invention is composite material sheet winding formation process and aims at avoiding empty and sliding during winding onto irregular surface. The composite material sheet winding formation process includes the first determining the empty core mold position, constituting core mold data by means of CAD technology and outputting core mold data file in the IEGES format to obtain the detail information of the surface and detect and optimize the empty points; and the subsequent increasing the winding angle to eliminate fiber empty and fiber sliding. The present invention has the beneficial effects of high versatility for winding formation of revolving body and non-revolving body, easy line profile control, convenient winding angle regulation and complete elimination of empty and sliding in winding onto irregular surface.
Owner:HARBIN INST OF TECH

Optical wavelength reflector and manufacture method thereof

The invention provides an optical wavelength reflector which comprises a first optical fiber, a first optical fiber built-in slot, a second optical fiber, a second optical fiber built-in slot, a multi-layer optical coating layer and a packaging structure, wherein the first optical fiber is fixed in the first optical fiber built-in slot; the second optical fiber is fixed in the second optical fiber built-in slot; and the packaging structure is used for packaging an assembly formed by the first optical fiber, the second optical fiber, the first optical fiber built-in slot, the second optical fiber built-in slot and the multi-layer optical coating layer. The invention has the advantages of high temperature stability, low cost, stable reflection bandwidth range, long service life, and the like and can be used for long-term outside work.
Owner:BROADEX TECH

Universal interconnect die

A device for electrically interconnecting one or more semiconductor devices to provide for flexibility in wiring and preventing long or shorted leads and methods for fabricating and using same. The device has a substrate with a plurality of substantially concentric electrically-conductive paths, each of the plurality of electrically-conductive paths being electrically isolated from each other and formed on a first surface of the substrate. At least one of the plurality of electrically-conductive paths is arranged concentrically so as to substantially span a width of the first surface of the substrate. A plurality of bonding pads is electrically coupled to each of the electrically-conductive paths. The plurality of bonding pads is coupled to one of the electrically-conductive paths and is electrically isolated from bonding pads located on any other electrically-conductive path. The entire interconnect device may be mounted in a standard leadframe product.
Owner:ATMEL CORP

Wiring robot of automatic wiring machine

The invention discloses a wiring robot of an automatic wiring machine. The wiring robot comprises a six-freedom-degree mechanical arm and a multifunctional mechanical hand mounted at the end of the six-freedom-degree mechanical arm. The multifunctional mechanical hand comprises a wiring head, a grabbing head, a switching mechanism, a switching drive motor and a vidicon. The wiring head and the grabbing head are fixed to the bottom face and the inner side face of the switching mechanism correspondingly, and the position of the wiring head is perpendicular to that of the grabbing head. The switching drive motor is connected to the outer side face of the switching mechanism, and the switching mechanism is driven by a drive shaft of the switching drive motor to rotate. A pneumatic clamping jaw is arranged at the end of the grabbing head. The wiring head is overall of a hollow structure, a wiring channel is arranged in the wiring head, a wire inlet is formed in the upper end of the wiring channel in the direction perpendicular to the wiring channel, and a wire outlet is formed in the other end of the wiring channel. The vidicon is fixed above the switching drive motor through a connecting plate and located at the top of the multifunctional mechanical hand. The wiring robot is high in circuit controllability and flexible in wiring, and material taking and wiring can be completed through the mechanical hand.
Owner:CHANGCHUN UNIV OF SCI & TECH +1

Two-bus communication and power supply MCU system

The invention discloses a two-bus communication and power supply MCU system, and the system comprises an intermediate control module, a terminal module and a bus power supply communication circuit. The intermediate control module is in communication connection with external equipment through serial port communication, and the intermediate control module is in communication and power supply connection with the terminal module through the bus power supply communication circuit; the intermediate control module comprises a first driving circuit module, a first decoding circuit module and a first MCU module with a serial port communication module; the first MCU module is in communication connection with external equipment through the serial port communication module and is used for receiving anequipment instruction of the external equipment and sending a control instruction to the external equipment; the terminal module comprises an RX-TX circuit module, a DC-DC circuit module, an open circuit and short circuit detection module, a second drive circuit module and a second MCU module. The system has the characteristics of high detection precision and good stability.
Owner:HANGZHOU BINGJIAN TECH CO LTD

Pre-magnetizing device of power supply transformer and pre-magnetizing method thereof

The invention relates to a pre-magnetizing device of a power supply transformer and a pre-magnetizing method thereof, which are applicable to limiting impulse current when connecting a large transformer into a power grid and further protecting the power supply transformer and the power grid, in particular to being applicable to marine electric propulsion systems. The pre-magnetizing device comprises a pre-magnetizing transformer for connecting with the power supply transformer; and a pre-magnetizing switch device for switching-on and switching-off is arranged at the input end of the pre-magnetizing transformer, and the pre-magnetizing switch device comprises a main contact, an instantaneous auxiliary contact and a delay auxiliary contact. The pre-magnetizing method of the power supply transformer relates to the pre-magnetizing procedure. The pre-magnetizing device has the advantages of small volume, small heat value, simple structure, flexible wiring, safety, stability, in-situ installation in a power supply transformer body or a power distribution screen, low overall cost, convenient replacement and maintenance and the like.
Owner:武汉长海电力推进和化学电源有限公司

Printed circuit board and mobile terminal

The invention discloses a printed circuit board which comprises a first signal layer, a first substrate, a first reference layer, a second substrate and a second reference layer, wherein the first signal layer, the first substrate, the first reference layer, the second substrate and the second reference layer are laminated. An RF signal line comprises a first line segment and a second line segment which are electrically connected. The width of the first line segment is smaller than that of the second line segment. The characteristic impedance of the first line segment refers to the first reference layer, and the characteristic impedance of the second line segment refers to the second reference layer. The characteristic impedance of the first line segment is equal to that of the second line segment. The printed circuit board has low RF signal transmission loss. The invention further discloses a mobile terminal.
Owner:GUANGDONG OPPO MOBILE TELECOMM CORP LTD

Optical fiber distribution box

The invention discloses an optical fiber distribution box which comprises a case body, wherein a wire inlet management chamber, a wire outlet management chamber, a mold box containing chamber and a wiring chamber are formed in the case body; the mold box containing chamber is used for containing at least one distribution mold box, and the distribution mold box is wired by the wiring chamber; the optical fiber distribution box further comprises wire arrangement trough plates; a plurality of wire arrangement straight slots are formed in the wire arrangement trough plates; the wire inlet management chamber and the wiring chamber are partitioned by a wire arrangement trough plate, and the wire outlet management chamber and the wiring chamber are partitioned by the other wire arrangement troughplate. Therefore, led-in and led-out cables are orderly arranged in the wire arrangement straight slots on the wire arrangement trough plates, and the cables in the wiring chamber are neatly distributed. Meanwhile, since the distribution mold box is a distributing box, multiple distribution mold boxes are arranged in the mold box containing chamber, and the optical fiber distribution box has higher distribution capacity. Moreover, the cables can be selectively accessed onto different distribution mold boxes during wire distribution, and distribution is flexible.
Owner:深圳市耐兹康科通信有限公司

Self-propelled trolley and self-propelled trolley conveying system

InactiveCN103204358AIncrease driving frictionFlexible wiringMechanical conveyorsDrive wheelEngineering
The invention relates to the field of conveying appliances and particularly discloses a self-propelled trolley and a self-propelled trolley conveying system. The self-propelled trolley comprises a trolley body with a lateral opening and a driving wheel arranged at an upper opening end of the trolley body, the driving wheel is carried on the top surface of a track to run, the self-propelled trolley further comprises a sustaining wheel and a sustaining wheel pressing mechanism, the sustaining wheel is installed at a lower opening end of the trolley body, and the sustaining wheel pressing mechanism drives the sustaining wheel to tightly adhere to the bottom surface of an uphill section of the track to run. The self-propelled trolley conveying system comprises the track and a plurality of self-propelled trolleys carried on the track to run. According to the self-propelled trolley, a sustaining wheel structure is arranged on the trolley body, the sustaining wheel can tightly adhere to the bottom surface of the uphill section of the track to run, thereby the driving friction force between the driving wheel and the track is increased, the self-propelled trolley can independently climb up without auxiliary equipment, and the system operating efficiency is increased.
Owner:HUBEI HUACHANGDA INTELLIGENT EQUIP

Method for reasonably earthing and setting cross river-sea shield tunnel

The embodiment of the invention provides a method for reasonably earthing and setting a cross river-sea shield tunnel. The method comprises the following steps: acquiring tunnel design and a construction parameter and determining physical and mechanical parameters of an earthing layer and a water layer on the tunnel; calculating a muddy water support pressure upper limit value capable of guaranteeing shield tunneling safety under different earthing thicknesses; calculating a muddy water support pressure lower limit value capable of guaranteeing shield tunneling safety under different earthingthicknesses; calculating a shield muddy water support pressure allowable difference value capable of guaranteeing tunneling safety under different earthing thicknesses; determining the maximal fluctuation range of shield muddy water support pressure in the tunneling process; enabling the maximal fluctuation range of the shield muddy water support pressure to be equal to the shield muddy water support pressure allowable difference value under a certain earthing thickness to acquire the minimal earthing thickness and considering safety coefficient to acquire earthing thickness. According to themethod, the rationality of the earthing thickness of the cross river-sea shield tunnel is guaranteed, and cleavage and instable failure of the tunneling face of the cross river-sea shield tunnel are avoided.
Owner:BEIJING JIAOTONG UNIV

Cold and hot compress eye patch

InactiveCN104605982AImprove the effect of hot and cold compresses on the eyesEasy to operateEye-masksTherapeutic coolingEngineeringRefrigeration
The invention relates to a cold and hot compress eye patch. The cold and hot compress eye patch comprises a patch body. A cold water bag, a hot water bag, a central control pressure stabilizer and a wiring line are arranged in the patch body. The cold water bag and the hot water bag are closely attached to the top and the bottom inside the patch body respectively. Refrigeration and heating devices used for refrigerating the cold water bag and heating the hot water bag are arranged between the cold water bag and the hot water bag. The central control pressure stabilizer is located between the cold water bag and the hot water bag. The refrigeration and heating devices are connected with the central control pressure stabilizer through lines. The central control pressure stabilizer is connected with one end of the wiring line, and the other end of the wiring line extends out of the patch body and is detachably connected with an external power supply. Compared with the prior art, the cold and hot compress eye patch is easy to operate, convenient to carry, capable of conducting refrigerating and heating at the same time and good in eye cold and hot compress effect.
Owner:黄海廷

Efficient energy-saving generatrix groove

The invention relates to an efficient energy-saving generatrix groove. The efficient energy-saving generatrix groove comprises a generatrix groove shell body, a plurality of bus bars arranged in the generatrix groove shell body, a jack box, a socket device and a cable wiring column; the shell body has a simple structure, is convenient to mount and has a good heat dissipation effect; meanwhile, the jack box with a high safety performance is arranged so that accurate, convenient and rapid jacking of the jack box is ensured; and meanwhile, the safety and reliability of hot plugging are ensured.
Owner:鼎圣集团有限公司

LED lighting panel

The invention provides an LED lighting panel. Conductive paste is filled in one step using grooves and through holes to extract a circuit pattern from the lower surface of an insulating substrate, wherein the circuit pattern can realize flexible wiring, which is more advantageous for finding a failing LED chip because multiple through holes can be detected; copper pins can avoid the overflow of the conductive paste, reduce the use of the conductive paste, and provide better conductivity; in addition, the flipping method of the LED does not require solder balls or wire bonding, and the LED is directly bonded to a bonding layer, so that the LED lighting panel is thinner and prevents side light emission.
Owner:常州市万象灯业有限公司

Protection system of full-functional belt conveyer

A protection system of a full-functional belt conveyer comprises a nose controller and a belt protection device, wherein the nose controller is arranged in the position of the nose of the belt conveyer, and includes a switching power supply, a bus interface converter, a PLC (Programmable Logic Controller) and a touch-control display screen; bus communication modules are internally fixed on switches of the belt protection device respectively, and are electrically connected with the switches in the belt protection device respectively; and all the bus communication modules are connected together through a two-wire system bus, and are connected with the PLC in the nose controller through the bus interface converter. Through the adoption of the protection system, the control wiring of the protection device is reduced, the material cost and the construction cost of a control cable are reduced, the wiring manner of the communication bus is flexible and can be freely topological, and the bus communication modules can set the address on line through software or a handheld programmer, so that the address is set simply and conveniently.
Owner:PINGDINGSHAN ZHONGXUAN AUTOMATIC CONTROL SYST

High voltage isolation transformer

The present invention provides a high voltage isolation transformer, comprising one or more sub-transformers; when the sub-transformer is provided with one, the high voltage isolation transformer is equivalent to the sub-transformer; when multiple sub-transformers are provided, the plurality of sub-transformers are connected in a cascade form, and each sub-transformer is connected in parallel withan equalizing device. The high voltage isolation transformer provided by the invention avoids the situation that partial discharge is difficult to control, the voltage level can be extended to hundreds of kilovolts and above, heat dissipation of windings is facilitated, effective insulation isolation of the compact space can be realized, and the difficulty of transformer insulation design and manufacturing process difficulty and volume can be effectively reduced. The high voltage isolation transformer in the invention has high insulation tolerance strength and low field strength distribution,simultaneously, effective suppression of the partial discharge can be realized, low partial discharge design of the transformer is realized, and the magnitude of partial discharge in the voltage level above hundred kilovolts does not exceed 50pC. The high voltage isolation transformer has the advantages of small structural size, high mechanical strength and flexible installation.
Owner:GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +1

Full-automatic home roll wire arrangement device for multi-wire cutting machine

The invention discloses a full-automatic home roll wire arrangement device for a multi-wire cutting machine. A steel wire wound around a wire winding and unwinding shaft is wound in a wire groove of a home roll through a guide wheel. An electric linear platform is fixed between the guide wheel and the home roll. The electric linear platform is fixedly connected with the top end of a fixing plate. A position sensor and a reel are mounted at the lower end of the fixing plate. The steel wire is led out of the guide wheel and then wound in the wire groove of the home roll through the reel. A mounting block is fixed to the bottom end of the fixing plate. A detection sensor is fixed to the mounting block. The detection sensor and the position sensor can both be driven by the electric linear platform to move in the axial direction of the home roll. The detection sensor is close to the home roll and opposite to the wire groove in the home roll in position. The electric linear platform, the detection sensor, a rotary encoder and the position sensor are all connected with a control system of the multi-wire cutting machine. The full-automatic home roll wire arrangement device is compact in structure, high in automation degree, easy to operate, flexible in wire arrangement and high in adaptability.
Owner:48TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP

Movable pipeline installation assisting device

The invention discloses a movable pipeline installation assisting device. The movable pipeline installation assisting device comprises a one-way moving joint type mechanical arm, a conveying and transporting system, a lifting steel frame system, a conveying and connecting system, an enclosure structure and a fixable wheel train. The one-way moving joint type mechanical arm serves as a body and is matched with the conveying and transporting system and the conveying and connecting system, the pipeline position can be adjusted on an actual construction engineering project site, constructors are assisted in completing pipeline butt joint hoop groove pressing work, the labor cost is saved, the site wiring efficiency is improved, by adjusting the conveying and transporting system, the conveying and connecting system, the fixable wheel train and a lifting steel frame system, the height position can be flexibly changed along with the change of the construction site, and the assembly working efficiency of site wiring is improved. Through combined assembly of the one-way moving joint type mechanical arm, the conveying system and an elevator, the movable pipeline installation assisting device with a brand new using effect is achieved.
Owner:QINGDAO TECHNOLOGICAL UNIVERSITY

Low-loss bending-resistant fiber to home

The invention discloses a low-loss bending-resistant fiber to the home. The low-loss bending-resistant fiber to the home is characterized in that a rare-earth-doped fiber core is adopted, an inner cladding layer and an outer cladding layer are formed on the surface of the rare-earth-doped fiber core from interior to exterior, and a primary coating layer, a buffering layer, a secondary coating layer and an outer protection layer are arranged on the surface of the cladding layer from interior to exterior in sequence. The low-loss bending-resistant fiber to the home is simple in structure, the transmission loss is effectively reduced, the brittleness of the fiber is improved, the bending performance of the low-loss bending-resistant fiber to the home is good, the low-loss bending-resistant fiber to the home can be directly arranged in the fields of indoor parts, electric control cabinets, ship electric devices and the like, and wiring connection is flexible and convenient.
Owner:安徽天龙电器线缆集团有限公司

A driving circuit of a display panel and an image display device

A driving circuit of a display panel and an image display device are disclosed, the driving circuit comprising: a ramp DAC adapted to output a first ramp voltage, the first ramp voltage linearly changing over time in a preset voltage range according to a preset step; a data gating circuit, accessing i digital video signals, the data gating module is suitable for generating a corresponding data gating signal at the moment associated with the numerical value of each digital video signal according to each digital video signal, the data gating signal is used for gating the first ramp voltage to directly or indirectly serve as data voltage, and the data voltage is used for controlling the display state of a pixel circuit in the display panel; wherein the slope DAC is M bits, the number of bitsof each digital video signal is N, M is less than or equal to N, and i, M and N are positive integers. By adopting the technical scheme, the area of the driving circuit of the display panel can be effectively reduced.
Owner:SEEYA OPTRONICS LTD

Aluminum alloy bonding wire

The invention discloses an aluminum alloy bonding wire, which is a soft wedge-shaped bonding wire during an ultrasonic bonding process and can prevent a chip from being broken and further display high-temperature strength after a wiring process. The invention provides the aluminum alloy bonding wire, which is composed of scandium (Sc) of 0.15 to 0.5 weight percent and aluminum with the balance purity being over 99.99 weight percent. The aluminum alloy bonding wire further has cold wire-drawing tissues in forcibly soluable aluminum substrates and vickers hardness ranging from 21 to 30. The aluminum alloy bonding wire can be strengthened by adding zirconium (Zr) of 0.01 to 0.2 weight percent. The aluminum alloy bonding wire is soft during a bonding process, thus the bonding wire can be connected without breaking the chip. Furthermore, by performing timely thermal processing after the bonding process, the high-temperature strength of the aluminum alloy bonding wire can be improved.
Owner:TANAKA DENSHI KOGYO KK

Vibration monitoring system for opencut tunnel impacted by rockfalls and monitoring method

The invention provides a vibration monitoring system for an opencut tunnel impacted by rockfalls and a monitoring method and relates to a safety monitoring technology. The vibration monitoring systemfor the opencut tunnel impacted by the rockfalls comprises a sensor part, a collector part and a monitoring center, the sensor part comprises acceleration sensors and video monitoring devices, and theacceleration sensors are arranged and distributed on a top plate of the opencut tunnel; the visual range of the video monitoring devices includes the tunnel top of the opencut tunnel and the top plate of the opencut tunnel, and the video monitoring devices are linked to the monitoring center in a wired transmission mode; the collector part is connected with the acceleration sensors and linked tothe monitoring center through a communication network, and a monitoring center system includes an intelligent monitoring application server and a data server and is used for monitoring storage of dataand early warning information and pushing client side data. The problem is solved that it is difficult to evaluate the damage of the opencut tunnel since the structure of the opencut tunnel and the structure of a top cushion layer of the opencut tunnel are diversified.
Owner:CHINA RAILWAY ERYUAN ENG GRP CO LTD

Liquid level seal connector and underwater connection signal transmission and air guide method thereof

The invention relates to a liquid level seal connector and an underwater connection signal transmission and air guide method thereof. The connector comprises a cable. One end of the cable is sleeved by a casing cap. The front end of the casing cap can be sleeved in a sensor casing body of a transmitter sensing part. A first sealing device is arranged at the joint of the casing cap and the sensor casing body. A second sealing device which is used for sealing the cable and the casing cap is arranged on the tail end of the casing cap. A plug of a connector is arranged in the casing cap. The plug is connected with the cable. The socket of the inserter is arranged in the sensor casing body and is connected with a transmitter signal line, so as to form an integral connector structure. According to the invention, the casing cap is sleeved in the sensor casing body; the transmitter sensing part, the cable and a power supply can be flexibly separated, which is convenient for replacement and maintenance; through first and second sealing devices, the casing cap and the sensor casing body are sealed to form a cavity; the cable, the plug and the socket are arranged in the cavity and are effectively isolated from an external medium; and the liquid level seal connector has the advantages of good sealing effect, high protection degree and great reliability.
Owner:MICRO SENSOR

Method for judging position of failure cell in energy storage type sodium-sulfur cell module

ActiveCN103105588AFlexible wiringShort cooling channelsElectrical testingElectrical batteryVoltage
The invention discloses a method for judging the position of a failure cell in an energy storage type sodium-sulfur cell module. The energy storage type sodium-sulfur cell module consists of a plurality of sub-loops which are sequentially connected in series; each sub-loop is formed by connecting a plurality of sodium-sulfur cell series-connection units with one another in parallel; each sodium-sulfur cell series-connection unit is formed by sequentially connecting a plurality of single sodium-sulfur cells in series; and the position of the sodium-sulfur cell series-connection unit in which the failure cell is located is judged by comparing the comparison voltage of each sodium-sulfur cell series-connection unit and the variation rate of the end voltage of each sodium-sulfur cell series-connection unit. According to the method provided by the invention, the quantity of voltage collection wires led out from a thermal insulating box is greatly reduced on the premise of ensuring that the position of the failure cell is accurately judged, so that the wiring manner is relatively sensitive, a heat radiation channel of the thermal insulating box is reduced, and the thermal insulating box keeps a constant temperature. Meanwhile, the volume of data collected by a cell management unit is further greatly reduced, and system resources can be saved.
Owner:EAST CHINA ELECTRIC POWER TEST & RES INST +2

Ceramic lining plate of power module

The invention discloses a ceramic lining plate of a power module. The ceramic lining plate comprises a first metal layer, a second metal layer and a third metal layer which are sequentially arranged from top to bottom, wherein a first ceramic layer is arranged between the first metal layer and the second metal layer, a second ceramic layer is arranged between the second metal layer and the third metal layer, the first metal layer is configured to be an emitter region and a control signal terminal region which are isolated with each other, the second metal layer is configured to be a collectorregion, the second metal layer also can further extend to an upper surface of the first ceramic layer via a through hole, grooves are formed in an upper surface of the lining plate along a thickness direction and are respectively used for installing a first power chip and a second power chip, and the grooves extend to the first metal layer from the first metal layer. By the ceramic lining plate, the technical problems that a circuit interconnection structure of the ceramic lining plate of an existing power module is large in stray inductance, a welding tool is needed to be used during chip welding, a metal liner on a front surface of the lining plate is a combination layer of strong electricity and weak electricity and interconnection between the lining plates is relatively complicated canbe solved.
Owner:ZHUZHOU CRRC TIMES SEMICON CO LTD
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