Showing papers on "Electrical connection published in 2015"

Welding techniques for battery cells and resulting electrical contact resistances

Abstract: In large battery assemblies, which are integrated, for example, in electric vehicles or stationary storage systems, up to several thousand single battery cells are connected together. Every single cell connection influences the functionality and efficiency of the whole battery system. Resistance spot, ultrasonic or laser beam welding are mostly used for connecting battery cells in the production of large battery assemblies. Each of these welding techniques has its own characteristics depending on the material properties and contact geometry. Cell casing and terminal dimensions may constrain possible contact geometries. For example, pouch cells provide detached tabs, whereas cells with hard casing provide a certain area of the casing for electrical connection. Consequently, it is a challenging task to find the most suitable welding technique and welding parameters for each individual battery assembly. This paper presents a comprehensive overview on joining battery cells by resistance spot, ultrasonic and laser beam welding. The specific features, advantages and dependencies of each welding technique for connecting cells are discussed. In addition, a quantitative analysis on welded test samples reveals the ultimate tensile strength and heat input into a battery cell. A novel measuring and calculation method was designed and applied to assess the electrical contact resistance itself. The electrical contact resistance occurs as a result of the joint and not in the bulk material. Therefore, it is a criterion which may be transferred to any size of joint partners.

Semiconductor device and manufacturing method thereof

Abstract: The present invention provides a semiconductor device and a manufacturing method thereof, the semiconductor device comprises a first substrate, an inter-metallic compound layer and a second substrate, the first substrate has a plurality of first electrical connection pads, the inter-metallic compound layer is formed on each the first electrical connection pads, and has a thickness of 0.5 to 5 [mu] m, the second substrate has a plurality of second electrical connection pads, and each of the second electrical connection pads correspondingly connects to the inter-metallic compound layer on each of the first electrical connection pads. The present invention is able to reduce cost and improve yield and reliability.

Chiplets with connection posts

Abstract: A component includes a plurality of electrical connections on a process side opposed to a back side of the component. Each electrical connection includes an electrically conductive multi-layer connection post protruding from the process side. A printed structure includes a destination substrate and one or more components. The destination substrate has two or more electrical contacts and each connection post is in contact with, extends into, or extends through an electrical contact of the destination substrate to electrically connect the electrical contacts to the connection posts. The connection posts or electrical contacts are deformed. Two or more connection posts can be electrically connected to a common electrical contact.

Exploring the electrical wiring of screen-printed configurations utilised in electroanalysis

Abstract: In this technical note the often overlooked issue of electrically connecting screen-printed electrode sensors is considered. The electrical connection of screen-printed electrodes to the potentiostat/electronics can be a main issue when a true electrochemical response is trying to be obtained and if one does not have a stable electrical connection, the results that are obtained may lack reproducibility and therefore maybe discredited as “another failed electrochemical probe/analyte”. This paper considers the case of electrically connecting screen-printed with crocodile clips and compares that to the use of edge-connectors demonstrating the precise connection of an electrode setup when utilising crocodile clips can result in extremely reproducible electrochemical outputs when applied correctly.

Electrical methods and systems for concrete testing

Abstract: Hundreds of thousands of concrete bridges and hundreds of billions of tons of concrete require characterization with time for corrosion. Accordingly, protocols for rapid testing and improved field characterization systems that automatically triangulate electrical resistivity and half-cell corrosion potential measurements would be beneficial allowing discrete/periodic mapping of a structure to be performed as well as addressing testing for asphalt covered concrete. Further, it is the low frequency impedance of rebar in concrete that correlates to corrosion state but these are normally time consuming vulnerable to noise. Hence, it would be beneficial to provide a means of making low frequency electrical resistivity measurements rapidly. Further, prior art techniques for electrical rebar measurements require electrical connection be made to the rebar which increases measurement complexity/disruption/repair/cost even when no corrosion is identified. Beneficially a method of determining the state of a rebar without electrical contact is taught.

Rigid circuit board with flexibly attached module

Abstract: An electrical interconnection system comprises a bifurcated, multilayer flex circuit having electrode pads on the inner surfaces of the bifurcation. Electronic components are mounted on one or both sides of the flex circuit by conventional means. When the bifurcation is spread apart, the electrode pads are alignable with respective contacts on a printed circuit board. After bonding the pads to the contacts by soldering, conductive adhesive, or other means, a secure electrical connection is maintained while still allowing the flex circuit to bend somewhat from side to side, creating additional design options not available with rigidly mounted components and modules.

Using skin resistance measurements to determine timing of bio-telemetry measurements

Abstract: Wearable devices are provided including electrical contacts to detect voltages or other biosignals when mounted to the skin of a wearer. The impedance between a pair of the electrical contacts can be detected and the device operated based on the detected impedance. The device can detect an electrocardiogram or other biopotentials using the electrical contacts if the detected impedance falls below a specified threshold. The device could indicate that the detected impedance is below the specified threshold, e.g., such that a wearer could contact one of the electrical contacts with a finger to allow detection of an electrocardiogram between the arms of the wearer. The device could indicate that the detected impedance remains greater than the specified threshold, e.g., such that a wearer could re-mount the wearable device to improve the electrical connection between the electrical contacts and the wearer's skin.

Snap button fastener providing electrical connection

Abstract: Embodiments are generally directed to a snap button fastener providing electrical connection. An embodiment of a fastener includes a first mechanical part, the first mechanical part including at least a stud portion, the first mechanical part including a first electrical connector; a second mechanical part, the second mechanical part including at least a socket portion with a spring element and the socket portion, the second mechanical part including a second electrical connector. The stud portion of the first mechanical part and the socket portion of second mechanical part, if separated, are to interlock upon the application of a first force towards each other, and, if interlocked, to separate upon the application of a second force away from each other. The first electrical connector and the second electrical connector are to be electrically connected when the first mechanical part and the mechanical part are interlocked, and first electrical connector and the second electrical connector are to be disconnected when the first mechanical part and second mechanical part are separated.

Heat radiation assembly and electric device

Abstract: The invention provides a heat radiation assembly and an electric device, wherein the heat radiation assembly comprises: a screening element which is arranged with a through hole thereupon and is in electrical connection with ground copper of PCT board, the PCT board being equipped with heat radiation electrical elements; a heat tube which is positioned on the through hole, the heat tube being in electrical connection with the screening element, together, the heat tube, the PCT board and the screening element constituting an electromagnetic screen cover which can hold a heat radiation electrical element; an elastic thermal interface material which is arranged between the heat tube and the heat radiation electrical element and is cemented to the heat tube and the heat radiation electrical element. In the technical solution herein, the through hole on the screen element cements the thermal interface material on the heat radiation electrical element and the heat tube, which enables heat of the heat radiation electrical element to be transmitted to the heat tube via thermal interface material, thus reducing heat resistance of the heat radiation assembly and shortening heat transmission path between the heat radiation electrical element and the heat tube.

Flexible interconnects for modules of integrated circuits and methods of making and using the same

Abstract: Flexible interconnects, flexible integrated circuit systems and devices, and methods of making and using flexible integrated circuitry are presented herein. A flexible integrated circuit system is disclosed which includes first and second discrete devices that are electrically connected by a discrete flexible interconnect. The first discrete devices includes a first flexible multi-layer integrated circuit (IC) package with a first electrical connection pad on an outer surface thereof. The second discrete device includes a second flexible multi-layer integrated circuit (IC) package with a second electrical connection pad on an outer surface thereof. The discrete flexible interconnect is attached to and electrically connects the first electrical connection pad of the first discrete device to the second electrical connection pad of the second discrete device.

Cover assemblies, kits and methods for covering electrical cables and connections

Abstract: A cover assembly for covering and electrically insulating an electrical connection includes a joint body including a tubular inner sleeve and an integral semiconductor layer. The inner sleeve is formed of an elastically expandable, electrically insulating material and having an outer surface and opposed first and second terminal ends. The inner sleeve defines a through passage extending axially from a first end opening at the first terminal end of the inner sleeve to a second terminal end opening at the second end of the inner sleeve. The semiconductor layer is disposed on the outer surface of the inner sleeve and is formed of an electrically semiconductive material. The semiconductor layer extends axially from a first terminal end of the semiconductor layer to an opposing second terminal end of the semiconductor layer. The first terminal end of the semiconductor layer is spaced apart from the first terminal end of the inner sleeve a prescribed semiconductor truncation distance to define a tubular band of the outer surface that is not covered by the semiconductor layer.

Main-gate-free and high-efficiency back-contact solar cell module, main-gate-free and high-efficiency back-contact solar cell assembly, and preparation process thereof

Abstract: The present invention relates to the field of solar cells, and in particular to a main-gate-free and high-efficiency back-contact solar cell module, a main-gate-free and high-efficiency back-contact solar cell assembly, and a preparation process thereof. The solar cell module, comprising cells and an electrical connection layer, a backlight side of the cells having P-electrodes connected to a P-type doping layer and N-electrodes connected to a N-type doping layer, is characterized in that the electrical connection layer comprises a number of parallel leads each electrically connected to the P-electrodes or the N-electrodes. The present invention has the beneficial effect that a main-gate-free and high-efficiency back-contact solar cell module, a main-gate-free and high-efficiency back-contact solar cell assembly, and a preparation process thereof are provided, which can effectively the short-circuiting of the P-electrodes and the N-electrodes and has the advantages of low cost, high hidden-cracking resistance, high efficiency and high stability.

Contactless electroluminescence imaging for cell and module characterization

Abstract: Module performance can be characterized by imaging using baseline and periodic images to track defects and degradation. Both thermal images, which can be acquired during sunny operating conditions, and photoluminescence images, which could be acquired at night, can be collected without electrical connection. Electroluminescence (EL) images, which are useful to detect many types of defects such as cracks, interconnect and solder faults, and resistances, have typically required electrical connection to drive current in the cells and modules. Here, a contactless EL imaging technique is proposed, which provides an EL image without the need for electrical connection to drive current through the module. Such EL imaging has the capability to be collected at night without disruption to daytime power generation.

Led driver operating from unfiltered mains on a half-cycle by half-cycle basis

Abstract: An analog electronic circuit for driving a string of LEDs including input terminals for accepting connection to AC voltage, a current regulation circuit operatively coupled to receive an AC voltage from the input terminals and to provide an output for connection to drive the string of LEDs. Included is a current regulation circuit configured to limit the current flow through the string of LEDs on a half-cycle basis to a predetermined value. Also disclosed are an overvoltage circuit configured to switch off electrical connection between the AC voltage and the string of LEDs upon the AC reaching a predetermined high voltage value on a half-cycle basis in order to limit power. Overtemperature and power factor correction are also addressed. Also improving efficiency by shorting part of the LED string during the lower voltage phase of the input AC voltage.

Superconducting bump bonds

Abstract: A device (100) includes a first chip (104) having a first circuit element (112), a first interconnect pad (116) in electrical contact (118) with the first circuit element, and a barrier layer (120) on the first interconnect pad, a superconducting bump bond (106) on the barrier layer, and a second chip (102) joined to the first chip by the superconducting bump bond, the second chip having a quantum circuit element (108), in which the superconducting bump bond provides an electrical connection between the first circuit element and the quantum circuit element.

Transcutaneous electrical nerve stimulation (tens) apparatus

Abstract: Provided is a transcutaneous electrical nerve stimulation (TENS) apparatus, which includes an electric signal generator configured to generate an electrical stimulation signal, an electrode configured to transmit an electrical stimulation corresponding to the electrical stimulation signal generated by the electric signal generator to a user, and a connection unit configured to connect the electric signal generator to the electrode, wherein the electrode includes a pair of annular contact points for an electrical connection with the electric signal generator. Here, the connection unit may include magnetic material.

Switching status check with circuit parts of an insulation monitor

Abstract: A battery management system for a high-voltage battery that has a switching device with controllable switching elements for establishing and disconnecting an electrical connection between the poles of the high-voltage battery and the connection points for a consumer network, and a device for insulation monitoring. The poles and connection points are each switched to a reference potential for insulation measurement via a voltage divider. The battery management system may have a device for checking the switching status of the controllable switching elements by means of measuring devices for determining the electrical voltage. The measuring devices are arranged so that they measure the voltage between the output of the respective voltage divider and the reference potential. The device for checking the switching status of the controllable switching elements has a device for comparing the measured voltage values of the two measuring devices. A controllable switching element is switched between each of their assigned voltage dividers.

Interchangeable cable connection system

Abstract: An electrical connection device for electrically connecting an electronic component of the type having a plurality of electrical connection points. The electrical connection device includes an electrical cable extending between first and second ends with at least one of the ends including an interface plug with a first set of internal contacts in electrical communication with the electrical cable. The device also includes at least one connector adapter including a first end configured for connection to the interface plug and a second end defining an electrical connector. The at least one connector adapter includes a second set of internal contacts configured to conductively engage the first set of internal contacts such that the electrical connector is in electrical communication with the electrical cable.

Power supply equipment power supply interface device with slide chutes

Abstract: The invention provides a power supply equipment power supply interface device with slide chutes. The power supply interface device comprises a jack base device (9) and a plug device (8). The plug device (8) is used for being plugged in the cavity of the jack base device (9) and the tail end of the plug device (8) is provided with a connecting notch (82) used for being connected with a connecting protrusion (92) in the cavity so that electrical connection is realized. The jack base device (9) comprises an end part wall (91), a transverse side wall (99) and a base body (98) opposite to the end part wall (91) so that the cavity is formed through enclosing. The plug device (8) is provided with a positioning protrusion (81) used for being connected with the external side of the end part wall (91). The cavity is internally provided with a guiding sleeve (7) which is fixedly connected with the internal side of the end part wall (91) and the base body (98). The guiding sleeve (7) is provided with two opposite guiding slots which transversely extend in a diameter direction.

System for Tracking and Analyzing Display Case Usage

Abstract: A system for tracking and analyzing display case usage is disclosed. The system preferably includes a display case having a door and a transparent liquid crystal display (LCD) housed within said door. A CPU is preferably in electrical connection with the transparent LCD as well as a door sensor. The CPU is adapted to store information regarding the content being shown on the LCD and whether the door is open or closed. A network connection allows the CPU to transmit this information to a remote location. A temperature sensor can also be in electrical connection with the CPU in some embodiments and this data can also be stored and transmitted to a remote location.

Pixel control circuit

Abstract: A pixel control circuit includes an organic light emitting diode, a driving transistor, a driving circuit, a discharge circuit and a compensation circuit. The driving transistor is used to turn on or turn off the organic light emitting diode. The discharge circuit is used to control the electrical connection between the organic light emitting diode and an initial voltage to timely provide a discharge path for the organic light emitting diode. The compensation circuit is used to compensate a conducting current for the organic light emitting diode when the organic light emitting diode emits light so that the conducting current is independent of a threshold voltage of the driving transistor. The driving circuit is used to control the electrical connection between a predetermined voltage and the driving transistor to make the organic light emitting diode emit light.

Power supply unit provided with electric indicator lamp and used for flexible circuit

Abstract: The invention discloses a power supply unit provided with an electric indicator lamp and used for a flexible circuit (2), wherein a circuit body of the flexible circuit (2) is flexible and is connected to electric equipment; a connecting plug (21) is arranged at the tail end of the circuit body; the connecting plug (21) is matched with a wire holder (8) in the power supply unit and is used for electrical connection; the power supply unit comprises a rack (9) and a driving motor (7) fixed in a left body (98) of the rack (9); and a screw (71) driven by the driving motor (7) is provided with a tail end used for being rotatably fixed in a right longitudinal plate (93) of the rack (9).

Method and apparatus for power sharing

Abstract: A method is provided comprising: detecting an electrical connection between a first device having a first battery and a second device having a second battery; receiving an indication of a residual power of the second battery; displaying, by the first device, a power sharing interface based on the indication of the residual power of the second battery; detecting an input to the interface specifying a threshold amount of power; transmitting power from the first battery to the second device until the threshold amount of power is transmitted.

Access control system using a wearable access sensory implementing an energy harvesting technique

Abstract: A method for operating a Wearable Access Sensor (“WAS”). The methods comprise: capturing RF energy by the WAS, where the RF energy is emitted within a surrounding environment from equipment disposed at an access point of a restricted area; passing the RF energy through a switch that is normally in a position which provides an electrical connection between an antenna of the WAS and a full wave rectifier of the WAS; performing operations by the WAS to convert the RF energy into direct current for generating electric power; supplying the electric power to an energy storage device of the WAS for charging the energy storage device to a pre-determined voltage level; and supplying power from the energy storage device to a controller of the WAS when a voltage level of the energy storage device is equal to or greater than the pre-determined voltage level.

Lateral/vertical transistor structures and process of making and using same

Abstract: A microfluidic device can include a base an outer surface of which forms one or more enclosures for containing a fluidic medium. The base can include an array of individually controllable transistor structures each of which can comprise both a lateral transistor and a vertical transistor. The transistor structures can be light activated, and the lateral and vertical transistors can thus be photo transistors. Each transistor structure can be activated to create a temporary electrical connection from a region of the outer surface of the base (and thus fluidic medium in the enclosure) to a common electrical conductor. The temporary electrical connection can induce a localized electrokinetic force generally at the region, which can be sufficiently strong to move a nearby micro-object in the enclosure.

Motor-driven compressor

Abstract: [Problem] To minimize a decrease in sealing between a housing and an inverter cover in a motor-driven compressor while guaranteeing an electrical connection between the housing and the inverter cover. [Solution] An inverter-integrated motor-driven compressor, wherein the circumferential edge of a metal inverter cover (7) is securely fastened by a bolt (8) to a metal inverter case (6) constituting a housing of the motor-driven compressor. The inverter case (6) and the inverter cover (7) are sealed together by an annular insulating gasket (9) disposed therebetween. The inverter case (6) and the inverter cover (7) are electrically connected by a convex part (63) formed in the side of the inverter case (6), and the convex part (63) is positioned further mediolaterally inward in the inverter case (6) than are the bolt (8) and the insulating gasket (9).

Atomisation assembly and electronic cigarette

Abstract: An atomisation assembly and an electronic cigarette. The atomisation assembly comprises a mouthpiece cap (201), a liquid storage assembly (202) and an atomisation core assembly (203), the liquid storage assembly (202) comprising a liquid storage sleeve (301), the liquid storage sleeve (301) being internally provided with a ventilation tube (302) in communication with the mouthpiece cap (201), a liquid storage cavity (303) used for storing e-liquid being formed between the liquid storage sleeve (301) and the ventilation tube (302), the liquid storage assembly (202) also comprising a liquid separation plate (305) and liquid-guiding cotton (306). The atomisation core assembly (203) comprises an atomisation base (601), an electric heating wire assembly (602) and an electrical connection assembly, an end portion of the electric heating wire assembly (602) abutting the liquid-guiding cotton (306). The atomisation assembly makes it easy for a user to check the remaining amount of e-liquid at any time, and according to the remaining amount of e-liquid, thereby estimate the length of time for which the atomisation assembly can still be used. The atomisation assembly effectively prevents leakage of the e-liquid, and prevents a user from drawing in un-atomised e-liquid.

Charging station for providing electrical energy for an electrically drivable vehicle and charging installation assembly comprising the charging station

Abstract: The invention relates to charging station for providing electrical power to an electrically operable vehicle, comprising a housing having an opening, an opening associated with closing element for selectively enabling and / or closing the opening, at least one of accessible outside the housing plug element for producing a charge associated with the vehicle a guided in the housing power supply line having a plurality of electrical conductors for connection to a supply network, associated with said plug-in element internal electrical connection line having a plurality of electrical conductors, one associated with the plug-in element protection switch, a line fuse for securing at least of individual electrical conductors of the internal electrical connecting line and one of the internal electrical connection line associated switching unit for selectively establishing and interrupting an electrically conductive connection between the plug-in element and the power supply line, wherein is provided a plurality of spaced apart and each other not electrically conductively connected to connecting rails in the housing, on each of which an electrical conductor of the power supply line on the one hand and a corresponding electrical conductor of the internal electrical connection line on the other hand, electrically conductively connected

Securing device for connecting to a display device

Abstract: A description is provided of a wearable device that is made up of a display device and a securing device that provides at least an overlay portion to provide electrical connection to the display device. The display device and the securing device may both contain electrical circuitry. The overlay connection to the display device can create an electrical connection between the electrical circuitry on the display device and the electrical circuitry in the securing device.

Battery including an on-cell indicator

Abstract: The invention is directed toward a battery including an on-cell indicator. The battery including an on-cell indicator includes at least one electrochemical cell; at least one on-cell indicator; a printed circuit board; and at least one integrated circuit. The at least one electrochemical cell includes a first terminal and a second terminal. The at least one on-cell indicator includes at least one on-cell indicator terminal. The printed circuit board includes at least one on-cell indicator contact and at least one electrochemical cell contact. The at least one electrochemical cell contact is in electrical connection with the first terminal of the at least one electrochemical cell. At least one conductive trace includes an on-cell indicator interconnect and a printed circuit board interconnect. The on-cell indicator interconnect is in electrical connection with the at least one on-cell indicator terminal. The printed circuit board interconnect is in electrical connection with the at least one on-cell indicator terminal. At least one integrated circuit is in electrical connection with the printed circuit board.