10377 results about "Busbar" patented technology

The invention provides a rapid welding storage battery busbar structure and a manufacturing process, and relates to the field of lead-acid storage batteries, the rapid welding storage battery busbar structure comprises a plate group, a non-lead metal strip, a non-lead metal positive terminal and a non-lead metal negative terminal, the non-lead metal strip and the non-lead metal positive terminal are made of metal or alloy with the conductivity higher than that of lead, and the non-lead metal strip is electrified to be rapidly heated and is welded with the cluster group tab and the non-lead metal positive and negative terminals at the same time, and after being firmly welded, the non-lead metal strip is cut to form a busbar and is sealed by glue. According to the lead-acid storage battery, metal with the conductivity higher than that of lead is adopted to replace lead and lead-based alloy to serve as the busbar of the lead-acid storage battery, the gravimetric specific energy of the lead-acid storage battery is improved, the material cost of the lead-acid storage battery is reduced, the mode of welding by heating the metal strip is adopted to replace the technology of manufacturing the busbar through hot melting of lead, the production efficiency is improved, and the energy consumption is reduced; meanwhile, clean production is achieved, and lead pollution in the traditional production process is avoided.

This application presents an adaptive arc suppression method for ground faults in distribution networks, merging active and passive relay protection strategies. The method proceeds as follows: based on collected ground parameters, the fault phase is identified; compensation current is calculated from the fault's electromotive force, ground leakage resistance, and ground capacitance; current is injected at the neutral point according to the compensation current; finally, the arc suppression scheme is executed based on the zero-sequence voltage of the network's busbars. This approach incorporates both voltage- and current-based methods, addressing the limitation of fixed operation scenarios in traditional arc suppression methods. By quickly adapting to various fault situations, this method ensures an efficient and prompt response tailored to specific scenario requirements.

The present disclosure is to provide a cylindrical secondary battery that facilitates connecting a busbar by having both positive and negative electrodes on one side, and that has highly reliable electrical contact between an electrode assembly and a case. To that end, the present disclosure provides a secondary battery comprising: an electrode assembly; a case for housing the electrode assembly; a current collector plate welded to the electrode assembly and case; and a cap plate, located above the current collector plate, for sealing the case.

The invention discloses a copper bar connection state detection method and system, particularly relates to the technical field of copper bar state detection, and is used for solving the problem of poor early recognition of copper bar connection deterioration. According to the method, resistance and temperature rise conditions at the joint of the copper bars are measured synchronously in the load change process, signal denoising is realized in combination with finite difference filtering, and characteristic evolution conditions at the joint are captured; the method comprises the steps of determining an analysis window based on a real-time load change event, constructing a thermoelectric track point set and dividing a load rising and falling period, forming a continuous dynamic thermoelectric response curve, dividing a temperature rising track and a temperature falling track through a temperature change trend, extracting a resistance drift amount and a hysteresis loop area, and identifying a connection degradation trend and a structure fatigue characteristic. And connection state information generated by thermal stress action and thermal cycle asymmetry is obtained during load change, and a detection strategy is adjusted according to an analysis result, so that early degradation identification and intelligent risk grading of the copper bar connection state are carried out, and the sensitivity and accuracy of copper bar detection are improved.

The invention discloses a DC voltage divider parameter anomaly detection method based on harmonic characteristics, and the method comprises the steps: deploying an isolation type voltage sensor at a bus of a DC power transmission system, carrying out the voltage sampling through combining with an ADC, carrying out the data buffering and preprocessing, extracting a fundamental wave component and a target harmonic component through the fast Fourier transform, and calculating the harmonic distortion rate. And constructing a low-voltage arm capacitance and harmonic distortion rate model based on a voltage divider secondary circuit equivalent circuit and an energy distribution principle, and calibrating the low-voltage arm capacitance and harmonic distortion rate model. And designing a multi-objective optimization scheduling algorithm based on energy storage capacity and capacitance characteristics, and realizing dynamic power distribution and harmonic suppression of the system. And after abnormal triggering, the system automatically loads a capacitance compensation coefficient, adaptively adjusts algorithm parameters in combination with a measurement loop PI control link, reduces a harmonic amplification effect, and ensures that a measurement error is within an acceptable range. Harmonic monitoring precision and capacitance compensation optimization capability of the direct-current power transmission system are effectively improved, and stable operation of the system is guaranteed.

The invention discloses a power distribution cabinet bus temperature change analysis and early warning method and system, and relates to the technical field of power distribution cabinets, and the method comprises the steps: collecting the temperature data of a three-phase bus of a power distribution cabinet, dividing a temperature sequence into time-space units, and calculating the spatial characteristics and time characteristics of each time-space unit; performing frequency domain analysis on the temperature data of the space-time unit, decomposing the temperature data to obtain a low-frequency component, an intermediate-frequency component and a high-frequency component, extracting sub-components of different time scales, and calculating a time coupling feature, a space coupling feature and a physical coupling feature; fault-free data is collected to establish a normal mode library, historical fault data is collected to establish a fault mode library, the deviation degree of features and a baseline is calculated in real time, and marking and feedback updating are carried out on potential new faults; on the basis of distributed monitoring, temperature abnormal points are positioned, reconstruction errors of all scales are calculated, the abnormal origin scale is determined, and graded early warning is triggered, so that the problem that a traditional monitoring method is insufficient in fault recognition capability is solved.

A method, system, and readable storage medium for fault line selection in distribution networks is provided. The method includes: obtaining the zero-sequence current of each feeder and the zero-sequence voltage of the busbar within a preset time window after a fault occurs; using these to process the feeder's short-time window zero-sequence instantaneous power curve cluster in the distribution network through KPCA (Kernel Principal Component Analysis) for dimensionality reduction, determining the principal component scores; and performing BIRCH (Balanced Iterative Reducing and Clustering using Hierarchies) clustering based on these scores to identify whether a feeder is faulted. This clustering process allows for precise and rapid identification of the faulted feeder, even when the current is small, improving detection accuracy. This solves the problem of quickly identifying the faulted feeder in a small current grounding distribution network during single-phase grounding faults.

The invention discloses a Busbar welding seam segmentation method and system based on improved YOLOv11, and the method comprises the steps: constructing a Busbar welding seam segmentation model which takes a YOLOv11 model as a reference network, and comprises a backbone network, a neck network, a head network and mask branches; an LSKA module is embedded after each down-sampling stage of the backbone network of the YOLOv11 model; a CIoU loss function in the training process of the YOLOv11 model is replaced by a Focaler-IoU loss function; the LSKA module is used for enhancing the feature sensing ability of the model to a welding seam global structure and a pole small target by linear calculation complexity through a decomposable large kernel convolution structure; and collecting an image of a Busbar welding area, inputting the image into the trained Busbar welding seam segmentation model, and outputting binary masks of the welding seam and the pole. According to the method and the system, feature attention to the welding seam and the pole column area is enhanced, feature extraction of the welding seam area is enhanced, it is ensured that the mask boundary is clear, and wrong segmentation is reduced.

The invention relates to the technical field of power batteries, and discloses a plastic uptake support CCS integrated busbar assembly, which comprises a plastic uptake support body, busbar bodies, a wiring harness assembly and a collection nickel sheet, the plastic uptake support body is provided with a plurality of positioning grooves and riveting columns, the positioning grooves are fixedly connected in series with the plurality of busbar bodies through the riveting columns, and the collection nickel sheet is connected with the wiring harness assembly. The busbar bodies comprise a series busbar, a bridging busbar, a positive leading-out electrode busbar and a negative leading-out electrode busbar, the blister support body is provided with a wire harness buckle, the wire harness buckle is located between the two groups of busbar bodies, a wire is fixed on the wire harness buckle, the acquisition nickel sheet is welded on the busbar bodies through laser, and the acquisition nickel sheet is upwarped in a non-breaking manner after being welded. According to the plastic uptake support CCS integrated busbar assembly, the wiring harness buckle can simply, conveniently and quickly fix the wiring harness and prevent the wiring harness from being separated from the plastic uptake support, a traditional mode of fixing the wiring harness through hot pressing or hot riveting is replaced, and the product cost is greatly reduced.

A conductor connection terminal (1) with a spring-loaded clamp connection (3) is described, which has a clamping spring (4) and a busbar (5), wherein an electrical conductor (2) can be clamped to the busbar (5) by means of a clamping leg (7) of the clamping spring (4). The conductor connection terminal (1) has an actuating means with an actuating lever (9), which has an actuating section (13) engaging the clamping leg and can be pivoted between a release position, in which the electrical conductor (2) is freely movable between the clamping leg (7) and the busbar (5), and a clamping position in which the clamping leg (7) clamps the electrical conductor (2) to the busbar (5).The actuating lever (9) can be pivoted in its release position into an over-center position in which the actuating lever (9) automatically holds its release position, and that the actuating means has a return means (17) which is designed to pivot the actuating lever (9) from the over-center position into the clamping position by the action of force (F) on the return means (17) of an electrical conductor (2) inserted into the conductor connection terminal (1).

A cable adapter for a server chassis is disclosed. The cable adapter comprises an adapter body having a first surface with a key slot. The key slot is configured to receive a key rib on a busbar clip of the server chassis. A pair of latches are pivotably attached to opposite sides of the adapter body. Each latch has a latch arm that extends across an open end of the adapter body when in a closed position. The latch arms are configured to engage one or more latching ribs on the blades of the busbar clip such as by hooking around the latching ribs. A pair of connectors inside the adapter body configured to engage blades of the busbar clip.

A connection terminal for connecting a conductor is formed as a direct plug-in terminal with a clamping spring arranged in a housing with a resilient clamping leg which can move into an open position and into a locking position. There is provided an actuating device to press down the clamping leg into the open and locking positions for the insertion of a conductor. The housing has a conductor insertion channel for insertion of the conductor into a clamping point between a free end of the clamping leg and a busbar. The actuation device furthermore has a pressing element and a pivoting element which interacts with the pressing element at least when the clamping leg moves into the locking position. At least one releasing mechanism is provided to release the locking state of the clamping leg of the clamping spring. The pivoting element is formed to act on the pressing element and the pressing element is formed to act on the clamping spring, in particular the clamping leg. Wherein the pivoting element, when pivoting after the clamping leg is locked in the locking state, can be moved further up into a stop position, in which it comes to bear on a counter-stop.

The invention discloses a PDU module and a charging device, and relates to the technical field of power distribution, the PDU module comprises a control board, PCBs, a first control group and a first conductive assembly, the PCBs are connected to the control board at intervals, the first control group comprises a plurality of first relays forming an n * n triangular matrix, and the first relays are fixed on the PCBs. The first conductive assembly respectively realizes electrical communication and cross bridging of relays in the same row and in the same column through the first conductive member, the second conductive member and the bridging busbar. According to the scheme, through the triangular matrix layout, the total number of relays is remarkably reduced on the premise that the same control function as a traditional full matrix is achieved; and meanwhile, the relays are integrated on the PCB and are uniformly controlled by the control panel, so that a large number of connectors and wire harnesses are omitted, the module volume, the material cost and the assembly cost are effectively reduced, and a flexible power distribution function is realized.

A conductor connection terminal (1) with an insulating housing (3) having a conductor entry channel (2), a busbar (4), a clamping spring (5), and an actuating element (6) is described. The clamping spring (5) has a contact leg (7), a spring arch (8), and a clamping leg (9). The clamping leg (9), together with the busbar (4), forms a clamping point (10) for an electrical conductor (11) that can be inserted into the conductor entry channel (2), and can be moved between an open position (O) and a closed position (S) for opening and closing the clamping point (10). The conductor connection terminal (1) is designed for automatic displacement of the clamping leg (9) into the closed position (S) when an electrical conductor (11) is inserted into the conductor connection terminal (1). The actuating element (6) is designed to move the clamping leg (9) into the open position (O).The actuating element (6) is designed to be rotatable about its longitudinal axis (L) and has an actuating cam (12) which is designed to displace the clamping leg (9) into the open position (O) depending on a rotation angle (α) of the actuating element (6).

The power conversion device provided by the invention comprises a direct current end, a positive direct current bus, a negative direct current bus, a positive bus capacitor, a negative bus capacitor, at least three inverter bridge arms, a switch unit, a controller, filter inductors corresponding to the at least three inverter bridge arms one by one, a filter capacitor and an alternating current end. And the third end of each inverter bridge arm sequentially passes through the filter inductor, the filter capacitor and the switch unit corresponding to each inverter bridge arm and then is connected with the midpoint of the bus. The controller controls the switch unit to be switched off or the impedance of the switch unit to be increased when the voltage of the power grid is smaller than or equal to a first voltage threshold value; and after the switch unit is switched off or the impedance of the switch unit is increased, the modulation wave of each inverter bridge arm is controlled to be the modulation wave after the first common-mode modulation signal is superposed on the initial modulation wave of each inverter bridge arm, so that the amplitude of the modulation wave of each inverter bridge arm is increased. Furthermore, not only can the loss of the switching tube in each inverter bridge arm be balanced, but also the problem of common-mode oscillation caused by modulation wave change can be improved.

The invention provides a preparation method of a back contact cell assembly and the back contact cell assembly, and relates to the technical field of solar cells, a long cell string is firstly prepared, confluence fixing glue layers are formed on the back surfaces of a first piece, a tail piece and a middle piece, and then a first interconnection strip and a second interconnection strip are arranged. A plurality of long battery strings are then laid on the substrate. And an insulating isolation strip is arranged on the second interconnection strip at the preset position. And then bus bars are arranged on the insulating isolating bars and the bus fixing adhesive layer, and finally, a back plate is laid and laminated welding is carried out. Compared with the prior art, the bus bar can be hidden on the back surface of the battery, so that the size of the battery is increased, the space utilization rate of the module is improved, and the power of the module is improved. And meanwhile, by preparing the bus bar fixing adhesive layer in advance, high-temperature welding on the edge of the battery piece when the bus bar is fixed in the conventional technology is avoided, the warping phenomenon of the battery piece can be effectively avoided, the risk of subfissure or piece cracking is reduced, and the quality and yield of the battery are improved.

The invention provides an integrated busbar assembly and a battery module. The integrated busbar assembly comprises an integrated busbar and a cooling plate, the integrated busbar comprises a busbar body and a structure support member. The busbar body and the cooling plate are arranged on a first surface in a first direction of the structural support member; one end of the busbar body in the first direction is used for being connected with a battery; the cooling plate is arranged on at least one side of the busbar body in the second direction, and the first direction is perpendicular to the second direction. According to the integrated busbar assembly, the cooling plate is arranged on the structure supporting piece of the integrated busbar, and the cooling plate and the busbar body are adjacently arranged and located at the same height position, so that stacking of the cooling plate and the integrated busbar is avoided, the thickness of the integrated busbar assembly is reduced, and the height of the battery module is effectively reduced; the mechanical strength of the cooling plate is effectively improved by supporting the cooling plate through the structural supporting piece.

The present invention discloses a front-terminal vertical wide-tab direct-connected bipolar lead-acid battery and an assembly method thereof. Specifically, a new battery structure is proposed, in which the busbars between the single compartments in a conventional battery are removed, and the connection between the single compartments is replaced by a bipolar plate connection method. The plates and separators are stacked horizontally into a battery slot layer by layer in a specific arrangement order, the tabs are widened, and a row of holes are punched in the middle of the tabs of the bipolar plates. After the lamination is completed, metal rods are inserted into the holes to connect the pole groups and tabs in parallel, the pole groups are locked with a pressing plate, and each monomer is sealed by glue injection. The two halves are then bonded into a whole by glue sealing or heat sealing, and the battery is turned into an upright state. The busbars at the turning points are welded, the terminals are welded, and the side covers are sealed to complete the battery assembly. This structure can greatly improve the high-current and high-rate discharge performance of the battery, and effectively solve the high-rate discharge and assembly problems of lead-acid batteries, providing key support for technological innovation, performance breakthroughs and market expansion of lead-acid batteries.

An acoustic wave device includes a support, a piezoelectric layer, an IDT electrode including first and second busbars and first and second electrode fingers, and a first insulating film on the piezoelectric layer and that covers tip end portions of the second electrode fingers. In a multilayer body including the support and the piezoelectric layer, a cavity is provided on a side of the support with respect to the piezoelectric layer. In plan view, an outer peripheral edge of the cavity includes first and second outer peripheral edge portions facing each other in an electrode-finger extending direction. The first outer peripheral edge portion is on a side of the first busbar, and the first insulating film extends on the side of the first busbar, and, in plan view, overlaps the first outer peripheral edge portion of the cavity.

The invention provides a high-voltage power supply and distribution system for an electric vertical take-off and landing aircraft, and belongs to the technical field of power supply and distribution regulation control systems, and the system comprises a main bus bar module which is used for the current collection and distribution of an energy storage battery and a ground DC bus high-voltage power supply, and is provided with a fuse for overload cut-off; the output bus bar module comprises six mutually-independent motor load output channels and two mutually-independent high-voltage output channels, and each motor load output channel supplies power to the two symmetrically-arranged motors at the same time and is used for distributing 12 motor loads and 2 high-voltage output loads; the power-on buffer module is used for power-on buffer of 12 paths of motor loads and restraining power-on impact current; the self-locking control module has a motor load output control self-locking function, and can keep normal output of motor load current under the condition that the monitoring unit fails; and the monitoring unit module is used for monitoring the input voltage, the output voltage and the load current, and performing power-on buffer control and high-voltage contactor self-locking control on the motor load.

A conductive member includes a first connection body and a second connection body connected to the first connection body. The first connection body is configured to be clamped with an outer peripheral side of one cell of two adjacent battery cells. The second connection body is configured to be in contact with a pole of the other cell of the two adjacent battery cells. The conductive member is clamped with the outer peripheral side of the battery cell through the first connection body. The busbar is configured to clamp the conductive member with the outer peripheral side of the battery cell through the first connection body.

The invention relates to a spring-loaded clamping connection having a clamping spring and a busbar, wherein an electrical conductor can be clamped to the busbar by means of a clamping leg of the clamping spring. The clamping legs are displaceable between a pre-tightening position and a clamping position. The invention further relates to a connection terminal having such a spring-loaded clamping connection and to a guide sleeve for a spring-loaded clamping connection.

A connector part for a charging system for charging an electric vehicle includes: a plug-in portion for plugging connection to a mating connector part; at least one electric plug contact disposed on the plug-in portion so as to transmit a charging current; at least one busbar electrically connected to the at least one plug contact, the at least one busbar being connectable to a load conductor and having a face portion extending flat along a plane; and a cooling unit having a housing disposed on the face portion for conducting a coolant flow, the housing being open at a side facing the face portion, an electrically insulating separating layer being disposed between the housing and the face portion, the face portion being disposed on a first side of the separating layer so as to flow the coolant flow on a second side of the separating layer.

The utility model discloses a busbar, battery module and battery pack, the busbar includes at least two conducting strip, by setting the first weak part and the second weak part above the thinning area, when the pressure is released, the thinning area will be burst open by the high pressure gas in the single battery, and the impact force will break the first weak part and the second weak part. Therefore, the pressure release valve can efficiently and smoothly release pressure; and when the first weak part and the second weak part are disconnected, the circuit connection between the two adjacent single batteries is also disconnected, so that short-circuit protection is realized, and finally, dual protection of pressure relief protection and battery cell short-circuit protection is synchronously realized. In addition, the first weak part and the second weak part are fused due to overcurrent when being subjected to strong current, and dual protection can also be achieved. The battery module with the busbar can realize dual protection of internal pressure relief protection and battery cell short-circuit protection of the battery module. The battery pack with the battery module has higher safety performance.

The invention discloses a front terminal vertical wide tab direct-connection bipolar lead-acid battery and an assembly method thereof, and particularly provides a novel battery structure, a busbar between single partitions in a conventional battery is removed, and the connection between the single partitions is replaced by a bipolar pole plate connection mode; the polar plates and the partition plates are horizontally stacked into a battery jar layer by layer according to a specific arrangement sequence, tabs are widened, a row of holes are punched in the middles of the tabs of the bipolar polar plates, metal rods are inserted into the holes to enable the tabs of a polar group to be connected in parallel after lamination is completed, the polar group is locked by a pressing plate, and each monomer is sealed through glue injection. Then the two half parts are bonded into a whole through glue sealing or heat sealing, the battery is turned to be in a vertical state, then a busbar at the turning position is welded, a terminal is welded, a side cover is sealed, and battery assembling is completed; according to the structure, the large-current high-rate discharge performance of the battery can be greatly improved, the problems of high-rate discharge and assembly of the lead-acid battery are effectively solved, and a key support is provided for technical innovation, performance spanning and market expansion of the lead-acid battery.

The invention relates to the technical field of electric power conductive parts, in particular to a busbar using a conductive extrusion molding material as a shield, which comprises the following steps: S1, selecting a high-voltage insulating conductive material; s2, raw material pretreatment quality detection; s3, carrying out extrusion molding on the high-voltage insulating layer; s4, extruding and coating the conductive shielding layer; s5, carrying out secondary extrusion molding on the double-layer insulation structure; s6, processing the cutting edge of the busbar; s7, bending and forming the busbar; s8, peeling and punching the busbar; and S9, packaging and quality assurance testing. The 70% high-voltage insulating layer (crosslinked polyethylene) is used for providing the excellent dielectric strength of at least 35 kV / mm, electric shock and short circuit accidents are effectively prevented, safe operation of a power system is ensured, the 30% high-purity copper or aluminum alloy conductive shielding layer achieves the electromagnetic shielding effectiveness larger than or equal to 80 dB, electromagnetic interference (EMI) is remarkably inhibited, and the service life of the cable is prolonged. The influence of electromagnetic noise on surrounding equipment is reduced, and the stability and reliability of the system are improved.

The invention discloses a photovoltaic system night insulation impedance detection method, which comprises the following steps: before a photovoltaic system works at night, power is taken from a power grid through a power taking framework to supply power to a bus cathode of the system, so that ground insulation impedances of positive and negative electrodes of all photovoltaic group strings and the power taking framework form a grounding loop; the ground insulation resistance of the direct current side of the system is calculated by measuring the voltage of the power taking framework; when the photovoltaic system works at night, ground insulation fault positioning is carried out by controlling the power taking framework and the switching tubes of the DC / DC units. The beneficial effects of the invention are that the system can achieve the online detection of the night insulation resistance of a photovoltaic system, and the whole detection architecture is simple in structure, and even does not need to modify an existing hardware circuit, thereby effectively reducing the cost.

A battery pack according to an embodiment of the present disclosure includes a plurality of battery cells, a busbar assembly disposed on one side of the plurality of battery cells and electrically connected to the plurality of battery cells, and a cooling unit disposed between the plurality of battery cells and secured to the busbar assembly.

The invention relates to the technical field of power transmission and distribution switches, and discloses a vacuum bypass switch, which comprises an insulating shell, a static end copper bar, a movable end copper bar, a vacuum switch tube, an insulator, a pull rod and a permanent magnetic mechanism, the pull rod is driven by a magnetic field generated by the permanent magnet assembly to drive the moving end copper bar to move in the direction away from the vacuum switch tube so as to realize opening. The first coil and / or the second coil generate / generates a target magnetic field opposite to the magnetic field generated by the permanent magnet assembly in direction under the power-on effect so as to drive the pull rod to drive the movable end copper bar to move towards the vacuum switch tube, and closing is achieved. Closing is achieved through the first coil and / or the second coil, the problem that closing cannot be achieved due to single-coil faults is avoided, and the problem of thermal runaway caused by continuous energization of the single coil is solved. The invention also discloses a bypass switch control system, which controls the energization of the first coil and the second coil through the first energizing loop and the second energizing loop respectively to ensure the reliable closing of the vacuum bypass switch.

The invention relates to the technical field of solar cells, and particularly discloses a solar cell module and a photovoltaic system, and the solar cell module comprises a cell string which comprises an edge cell string; the edge confluence piece and the edge battery string are arranged on the edge of the same side of the battery assembly in the second direction, and the edge confluence piece is arranged in an extending mode in the second direction; the edge confluence welding strip is used for electrically connecting the edge battery string and the edge confluence piece, the edge confluence welding strip comprises a main body section and a bent section, the main body section is arranged in an extending mode in the first direction, and the bent section is arranged on the side, close to the edge confluence piece, of the main body section and on battery pieces in the edge battery string; one end close to the edge of the corresponding side of the battery assembly in the second direction is an edge end, and the bent section is bent in the direction far away from the edge end in the second direction. The hidden crack risk of the edge area of the battery assembly can be effectively reduced, the packaging effect is improved, and then the production yield and the long-term reliability of the battery assembly are improved.