424results about "Cooling bus-bar installations" patented technology

The invention relates to the technical field of bus ducts, and discloses an efficient heat dissipation bus duct with a waterproof function, which comprises an upper cover plate, a lower cover plate and conducting bars vertically arranged between the upper cover plate and the lower cover plate, the conducting bars are symmetrically arranged in groups, and a heat dissipation cavity is formed between the two groups of conducting bars; the upper cover plate and the lower cover plate are respectively provided with convection heat dissipation holes communicated with the heat dissipation cavity, and the convection heat dissipation holes and the heat dissipation cavity form an air convection air channel which is used for conducting convection heat dissipation on the conducting bar. According to the invention, the conductive bars are arranged at intervals to cooperate with the convection heat dissipation holes to form the convection heat dissipation cavity for the inner cavity of the bus duct, so that the efficient heat dissipation performance of the bus duct is ensured; through arrangement of the sealing strips and the hydrophobic protrusions, on the premise that the sealing performance of the conducting bar is guaranteed, water flow in the heat dissipation cavity can be prevented from flowing to gaps among the conducting bar, the inner heat dissipation plate and the cover plate, and the waterproof performance of the whole bus duct is improved.

The invention provides a bus duct temperature field dynamic regulation and control system based on edge calculation, and relates to the technical field of bus ducts. The bus duct temperature field dynamic regulation and control system based on edge calculation comprises a shell, an edge calculation gateway, a protection plate and a connector. The temperature data is processed in real time through the edge computing gateway, the temperature control response time is shortened to 200 milliseconds from 5 seconds of a traditional single-chip microcomputer, the problem of local overheating caused by response lag in the prior art is effectively solved, meanwhile, the TEC module, the phase change material and the air cooling structure are adopted for cooperative heat dissipation, the temperature control precision of a hot spot area reaches + / -0.5 K, and the temperature control accuracy of the hot spot area reaches + / -0.5 K. The safety of a power supply system is remarkably improved, an IP68-level sealing structure is formed by combining resin packaging with a high-thermal-conductivity insulating layer, heat balance is achieved through active heat absorption of a phase change material and active refrigeration of TEC in a completely closed environment, the defect that in the prior art, the protection level is insufficient (below IP54) due to forced air cooling is overcome, and the power supply system adapts to severe industrial environments such as humid and dusty environments.

The invention relates to the technical field of bus duct thermal protection, in particular to a bus duct thermal protection method and system based on intelligent monitoring, and the method comprises the steps: obtaining a packet loss delay bandwidth generation state label, calling an unstable link collection path node congestion rate port number to generate a scheduling table, collecting a temperature rise rate displacement, calculating a thermal slope and combining field disturbance to obtain a trigger value, and comparing thermal triggering with thermal accumulation to identify a high-temperature-sensitive section mark, and calling the mark to compare a cutoff threshold value to generate a starting result. By collecting multi-dimensional data such as packet loss, delay and bandwidth for dynamic analysis, the state of a communication link can be evaluated in real time, an unstable link can be found, an accurate triggering boundary value is generated by combining parameters such as thermal load, electric field intensity and harmonic waves, cooling or power-off protection is started in time by matching with a heat flow trend before a high-temperature-sensitive area appears, and the reliability of the system is improved. Response lag of a traditional technology is avoided, an intelligent response mechanism is innovated to achieve accurate and flexible thermal protection, stable and safe operation of equipment is guaranteed, and overheating accidents are reduced.

The invention discloses an electrical transmission member, an electrical transmission assembly, an electrical connection assembly and an electrical connection device. The electrical transmission member includes: a pair of conductors; and an insulator, wherein the pair of conductors are wrapped in the insulator. A cooling passage allowing a cooling fluid to pass through is formed in the insulator, and the cooling passage is located between the pair of conductors so that the pair of conductors can be cooled by the cooling fluid flowing through the cooling passage. The cooling passage is large in cooling area and high in cooling efficiency, so that the pair of conductors can be fully cooled by the cooling fluid flowing through the cooling passage, and the temperature rise of the electric transmission piece can be effectively reduced under the condition that the sectional area of the conductors is not increased.

An apparatus for connecting an electrical component to an insulated component to be electrically insulated therefrom includes an electrically insulating heat transfer unit for transferring heat between the electrical component and the insulated component to be electrically insulated therefrom; an attachment unit for attaching the electrical component to the electrically insulating heat transfer unit; and an electrically insulating support for arranging the electrically insulating heat transfer unit on the insulated component. The attachment unit is overmolded with the electrically insulating heat transfer unit. The electrically insulating support is arranged on the electrically insulating heat transfer unit in such a way that the electrically insulating support presses the electrically insulating heat transfer unit against the insulated component.

The invention discloses an electrical transmission member, an electrical transmission assembly, an electrical connection assembly and an electrical connection device. The electrical transmission member includes: a pair of conductors having a flat shape and arranged to face each other at an interval in a width direction thereof; and an insulator wrapping the pair of conductors and forming a cooling passage, each conductor having two side surfaces facing each other in the width direction thereof, the cooling passage being located between the side surfaces of the pair of conductors such that the pair of conductors can be cooled by a cooling fluid flowing through the cooling passage. The cooling passage is large in cooling area and high in cooling efficiency, so that the pair of conductors can be fully cooled by the cooling fluid flowing through the cooling passage, and the temperature rise of the electric transmission piece can be effectively reduced under the condition that the sectional area of the conductors is not increased.

A thermal and mechanical management device for conducting heat from a hot source to a cold source in a gas insulated electrical switching gear comprising a heat pipe formed as a spring element and at least partially formed as an S-shaped spring element. The S-shaped spring element following a path comprising a first arcuate portion, a second arcuate portion opposing the first portion, and being framed by a frame bordered by both the hot source and the cold source. The arc measure of each of the first and second arcuate portions being at least 180 degrees.

A propulsion system for an aircraft can include an electric power source and an propulsion assembly having a propulsor. An electric power bus can electrically connect the electric power source to the propulsion assembly. The electric power source can be configured to provide electrical power to the electric power bus. An inverter converter controller can be positioned along the electric power bus and can be electrically connected to the electric power source at a location downstream of the electric power source and upstream of the electric propulsion assembly.

The invention relates to the related technical field of bus ducts, in particular to a high-heat-dissipation-performance composite bearing assembly type intensive bus duct structure and a heat dissipation method thereof.The high-heat-dissipation-performance composite bearing assembly type intensive bus duct structure comprises two cover bodies and two side plates which are fixed to form an assembly frame used for fixing conducting bars, and further comprises plugging pieces movably arranged on the cover bodies, the cover body is provided with a blocking piece, the blocking piece is matched with an air inlet formed in the cover body, the blocking piece can be driven by a driving mechanism arranged in the assembling frame to switch the conduction state and the blocking state of the air inlet, and after external air enters the assembling frame through the air inlet, the external air passes through a heat dissipation air channel formed in the assembling frame and a through hole formed in the side plate; in the presence of thermal expansion, the pressure of the outer insulating part and the middle insulating part on the conducting bar is reduced, so that the heat dissipation between the conducting bar and the outer insulating part and between the conducting bar and the middle insulating part is facilitated, the heat dissipation efficiency can be effectively improved, the operation stability of the bus duct is ensured, and the risk of equipment failure is reduced.

Power converter (1) with: a switching circuit (20); a capacitor module (3) which is electrically connected to the switching circuit; an auxiliary capacitor module (5) connected in parallel to the capacitor module; and a device housing (12) which contains the switching circuit, the capacitor module and the auxiliary capacitor module, wherein The capacitor module includes: a capacitor element (31), a capacitor housing (32) that contains the capacitor element, an encapsulation resin (33) that encapsulates the capacitor element in the capacitor housing, and a capacitor busbar (4) which connects the capacitor element to a power terminal of the switching circuit, wherein the capacitor busbar includes: an element connection section (41) that is connected to the capacitor element within the encapsulation resin, a connecting section (42) which is connected to the power connection outside the encapsulation resin, and a power supply connection section (43) which is connected to a power supply wiring (54) outside the encapsulation resin, wherein the power supply wiring is electrically connected to a DC power supply, wherein the capacitor busbar includes a DC path (44) which represents a current path between the terminal connection section and the power supply connection section, and the DC path is exposed to the outside of the encapsulation resin, the auxiliary capacitor module is connected to the power supply connection section of the capacitor busbar, the auxiliary capacitor module is detachably attached to the power supply connection section by means of a fastening element (11), and a fastening direction of a fastening element (135) that secures the auxiliary capacitor module and a fastening direction of the fixing element are the same.

The utility model relates to the technical field of bus ducts, and discloses a bus duct with a heat dissipation structure, which comprises a bus duct body, a top plate positioned at the top of the bus duct body and connecting modules positioned on two sides of the bus duct body, and one side, far away from the connecting modules, of the bus duct body is provided with a flow guide assembly in sliding connection with a chute. A through hole is formed in the side, close to the flow guide assembly, of the bus duct body, and a heat dissipation assembly is arranged on the side, away from the bus duct body, of the through hole. According to the bus duct with the heat dissipation structure, the sealing rubber strips are rapidly installed in the grooves, then the heat conduction plates and the through holes are arranged in an inserted connection mode, expansion buckles and positioning holes are matched to serve as matching components, rapid installation of the heat conduction plates and the bus duct body can be achieved, and then locking blocks and the expansion buckles serve as the matching components, so that the heat dissipation structure is formed. The heat conduction plate and the bus duct body can be quickly fixed, and the heat conduction plate and the bus duct body can be quickly disassembled when the heat dissipation assembly is cleaned in the later period.

The invention discloses a bus duct structure and an assembly method thereof, and the bus duct structure comprises a housing which is provided with at least one installation groove. The insulating layer is attached to and covers the inner surface of the mounting groove; the insulating layer is arranged in the mounting groove, the groove opening of the mounting groove can allow the connecting row to enter or exit from the mounting groove along the depth direction of the mounting groove, the connecting row is embedded in the mounting groove through the groove opening of the mounting groove, and the connecting row is in contact with the insulating layer in an attached manner. According to the bus duct structure and the assembly method thereof provided by the invention, the assembly steps can be effectively simplified, and the temperature rise can be reduced.

The invention relates to the field of laminated busbars, and provides a laminated busbar with a heat dissipation structure in order to solve the problems that an existing laminated busbar is low in heat dissipation efficiency, the temperature of the busbar is likely to be too high, the current-carrying capacity and the insulation performance of the busbar can be reduced, and the stability and the service life of a whole power electronic system can be possibly affected. Comprising a lamination main body, an insulation packaging layer and a heat dissipation pipeline. The laminated main body is formed by alternately overlapping a plurality of conducting layers and insulating medium layers, and the insulating medium layers are arranged between the adjacent conducting layers; the insulating packaging layer coats the outer surface of the laminated main body; the heat dissipation pipeline is embedded in the insulation packaging layer; the two ends of the heat dissipation pipeline extend out of the insulation packaging layer. According to the invention, the water cooling channel formed by the heat dissipation pipeline is directly contacted with the laminated main body, and the cooling medium can quickly take away heat, so that the heat dissipation bottleneck caused by traditional insulation film packaging is solved; the heat dissipation pipeline is embedded in the insulation packaging layer, does not occupy too much space additionally, and meets the installation requirements of high-power-density equipment.

The utility model discloses a connecting structure of a high-efficiency heat dissipation type bus duct, and particularly relates to the technical field of bus ducts, the connecting structure comprises bus ducts and a connecting mechanism connected outside the connecting end of the two bus ducts, the connecting mechanism comprises a first shell and a second shell which are symmetrically connected, two end parts of the first shell are provided with outer dislocation plates, and the outer dislocation plates are provided with inner dislocation plates. Inner staggered plates matched with the outer staggered plates in structure are arranged at the two ends of the second shell, fastening bolts are connected to the two ends of each outer staggered plate, and concave cavities are formed in the outer side walls of the first shell and the second shell. The outer dislocation plates and the inner dislocation plates are arranged, the outer dislocation plates at the two ends of the first shell and the inner dislocation plates at the two ends of the second shell are attached in a staggered mode, then the fastening bolts are screwed on to achieve locking, and therefore stable connection of the first shell and the second shell is kept. And the clamping structure is arranged to further maintain the stability of the connected ends of the two bus ducts after connection, so that the heat dissipation of the bus ducts is not affected, and the heat dissipation effect is improved.

The utility model provides a novel intensive bus duct, which comprises a shell, connecting side plates, separators and busbars, the shell is provided with an accommodating cavity with two open ends, the accommodating cavity is divided by the separators to form a plurality of accommodating grooves, and the busbars and the accommodating grooves are arranged in a one-to-one correspondence manner to form an inner splicing type structure. A plurality of busbars can be integrally arranged in one shell, so that the space layout is optimized, the space utilization rate is improved, heat dissipation is facilitated, the performance of the bus duct is improved, and the service life of the bus duct is prolonged; the connecting side plates are oppositely arranged at the opening end of the shell, are used for protecting the joint part of the busbar, and are in nested connection with the bus connecting structure; the shells and the connecting side plates are integrally formed, so that the overall mechanical strength is improved, the shells of the two groups of bus ducts do not need to be manually aligned and fixed, the assembly process is simplified, the assembly difficulty and time are reduced, and the stability and reliability of the bus duct are improved due to the reduction of connecting points and the reduction of fault risks.

The invention relates to a cooling arrangement (1) with at least one busbar (2, 3) or with two busbars (2, 3), which are used in particular as electrical supply lines (8, 9) in an electrically powered motor vehicle, wherein the at least one busbar (2, 3) has a substantially flat contact area (4) on which at least one Peltier element (5) is arranged, wherein the respective Peltier element (5) has a first side (6) and an opposing second side (7) and two electrical supply lines (8, 9) to the Peltier element (5), wherein the first side (6) is arranged in contact with the busbar (2, 3), wherein a cooling element (10) is provided which is arranged such that the second side (7) of the Peltier element (5) is arranged in contact with the cooling element (10).

The invention relates to the technical field of bus ducts, and particularly provides a sealing plate assembly of a heat dissipation type bus duct connection area, which comprises a top plate, a bottom plate and two side plates arranged oppositely, the two side plates are arranged between the top plate and the bottom plate, and the two side plates, the top plate and the bottom plate enclose to form a connection area outer cover space. The top plate comprises lap joint sections located at the two ends of the top plate and a middle section located between the two lap joint sections, and the two lap joint sections are in lap joint with the outer sides of the tops of the adjacent bus duct sections respectively. A heat transfer path is formed between the closing plate assembly on the outer side of the connection area and the adjacent bus duct sections, heat generated in the operation process of the connection area can be diffused to the adjacent bus duct sections, the heat diffusion range is enlarged, local gathering of heat near the connection area is reduced, and the service life of the bus duct is prolonged. And the heat dissipation capability of the connection area is improved, and meanwhile, the sealing protection requirement of the connection area is considered.

An electrical connection unit comprises an electronic component, a base element with an opening, a busbar, a metal element, and a heat transfer element. The busbar is supported by the base element and is electrically connected to the electronic component. The metal element comprises a main body and a protruding section. The main body is located on the side of the base element opposite the electronic component. The protruding section extends from the main body through the opening and faces the electronic component. Alternatively, the protruding section extends from the main body through the opening and faces a connection component that connects the electronic component and the busbar.The heat transfer element is positioned between the electronic component and the protruding section or between the connecting component and the protruding section.

The invention relates to the technical field of electric connection, in particular to a cylindrical conductive array busbar flexible connection structure and a tubular busbar system. The flexible connection structure comprises a plurality of cylindrical conductive monomers which are arranged in a preset array and are arranged at intervals; a connection terminal or base for electrically connecting to an external conductor; and an end connection assembly mechanically fixing and electrically connecting the end of the conductive monomer to the connection terminal or the base body. According to the tubular bus system, a flexible connection structure is embedded among a plurality of tubular bus single bodies which are divided along the axial direction, so that a through forced heat dissipation air channel is formed in a tubular bus; the inner wall of the air duct is provided with heat exchange fins and / or an axial fan arranged along the axis, a power source of the axial fan is taken from spanning voltage at the two ends of the flexible connection, and self-adaptive air volume adjustment positively correlated with current is achieved. According to the invention, the flexible connection under the working conditions of bending, twisting and high current carrying in any direction can be obtained, and the ventilation condition in the tubular bus is improved.

The invention discloses a bus duct for high-voltage equipment connection and a high-voltage connection structure, and belongs to the technical field of high-voltage electrical equipment, and the bus duct comprises a housing which is internally provided with a channel penetrating through two ends, the channel is used for accommodating a bus bar, and the housing is an insulating material part; the multiple layers of bus bar groups are arranged in the channel at intervals in a layered mode, each layer of bus bar group comprises at least three bus bars, the at least three bus bars on the same layer are arranged at intervals, a gap is formed between the bus bar group and the inner wall of the shell, and the two ends of the bus bar group are located at the two ends of the shell respectively and used for being detachably connected with the high-voltage electrical equipment; the high-voltage connection structure comprises a bus duct, high-voltage power distribution equipment and a high-voltage transformer. Stable and reliable electrical connection is provided for high-voltage electrical equipment, it is ensured that the connecting position has high process quality, the heating phenomenon at the terminal head is effectively reduced, the occurrence rate of electrical faults is reduced, the technical requirement for operators is lowered, and meanwhile the construction cost is greatly saved.

The utility model relates to the technical field of bus ducts, and discloses a bus duct capable of being connected side by side, which comprises a first bus duct, a second bus duct, a third bus duct, a fixed block I and a fixed block II, and a connecting block is fixedly mounted on one surface, close to the second bus duct, of the fixed block I. According to the bus duct capable of being connected side by side, rapid positioning among the first bus duct, the second bus duct and the third bus duct can be achieved through cooperation of the connecting blocks and the connecting grooves, and rapid limiting of the connecting plates can be achieved through cooperation of the limiting rods, the second limiting grooves and the first limiting grooves; the rapid connection among the first bus duct, the second bus duct and the third bus duct is realized, the installation efficiency is high, the maintenance is convenient after long-time use, the heat dissipation of the copper bars in the first bus duct is convenient through the design of the ventilation holes, the copper bars in the first bus duct are prevented from working in a high-temperature environment for a long time, the damage is avoided, and the service life of the bus duct is prolonged. The overall normal use is influenced, and the practicability is relatively high.

The application discloses a high-strength connector-free dual-power bus duct and relates to the technical field of bus ducts. The high-strength connector-free dual-power bus duct comprises a tray, a main power supply, a standby power supply, an N-phase conductor and a PE-phase conductor, wherein the tray is provided with a plurality of placement grooves distributed at intervals; the main power supply comprises a first A-phase conductor, a first B-phase conductor and a first C-phase conductor; the standby power supply comprises a second A-phase conductor, a second B-phase conductor and a second C-phase conductor; the N-phase conductor and the PE-phase conductor are sequentially placed in the corresponding placement grooves; and an insulation clamping piece is arranged above the main power supply, the standby power supply, the N-phase conductor and the PE-phase conductor, and the insulation clamping piece is provided with a plurality of insulation clamping blocks, and every two adjacent conductors are separated by the insulation clamping blocks. The high-strength connector-free dual-power bus duct can improve the stability and safety of the bus duct.

The utility model discloses a heat dissipation type easy-to-connect bus duct, the end part of a liquid return pipe is connected with a liquid storage box at the back of a bus duct body, the bottom of the liquid storage box is connected with a miniature liquid pump, and the bottom of the miniature liquid pump is connected with a liquid collection pipe along the length of the bus duct body. According to the liquid cooling device, a circulating liquid conveying and distributing structure is formed by the liquid inlet pipe, the liquid return pipe, the liquid storage box, the micro liquid pump and the liquid collecting pipe, so that cooling liquid in the liquid storage box can be quickly and uniformly distributed into a plurality of groups of cooling pipes; cooling liquid in the cooling pipes is used for adsorbing heat generated during operation of the wire copper bars, the heat can be taken away along with flowing of the cooling liquid, the temperature of the wire copper bars during operation is reduced, and the cooling pipes are arranged on the side edges of the adjacent wire copper bars, so that uniformity and sufficiency of cooling treatment on the wire copper bars are guaranteed, and the service life of the wire copper bars is prolonged. And stable and long-time operation of the lead copper bar is ensured.

The utility model relates to the technical field of dense bus ducts, and discloses a high-protection dense bus duct which comprises a bus duct structure, a protection structure and an installation structure are installed on the bus duct structure, the bus duct structure comprises a bus duct, and the protection structure comprises a sliding groove, a limiting block, a first fastening bolt, a first protection plate and a second fastening bolt. The first fastening bolt is installed on the bus duct through the limiting block, the first protection plate is slidably installed on the bus duct through the sliding rail and the sliding groove, the second fastening bolt is installed on the side wall of the first protection plate in a threaded mode, the second protection plate is slidably installed in the first protection plate, and a threaded hole is formed in one end of the first protection plate. According to the protection structure, the second protection plate can be adjusted more flexibly, accurate positioning can be carried out according to actual requirements, different environment or installation requirements can be met, and maintenance personnel can conveniently adjust the state of the protection plate.

The utility model relates to the technical field of bus ducts, in particular to a bus duct with a waterproof structure, which comprises a first conducting bar and a second conducting bar, fixing plates are arranged at the upper ends and the lower ends of the first conducting bar and the second conducting bar, and radiating fins are arranged on the left surfaces and the right surfaces of the first conducting bar and the second conducting bar. A sealing assembly is installed on the outer surface of the front end of the first conducting bar, and a butt joint assembly is installed on the outer surface of one end of the back face of the second conducting bar. The sealing assembly comprises a groove, and the groove is formed in the sealing assembly. According to the utility model, the first sealing gasket and the second sealing gasket are attached more firmly, and water is prevented from entering between the first conducting bar and the second conducting bar due to subsequent loosening, so that the sealing gaskets are attached more tightly and cannot be loosened subsequently, and the service life of the sealing gaskets is prolonged. And subsequently, the threaded rod can be screwed and rotated for multiple times to adjust the attaching tightness of the sealing gasket again.

The utility model discloses a bus duct with a dual dustproof structure, which belongs to the technical field of bus ducts, and comprises a bus duct body, two sides of the bus duct body are respectively and fixedly connected with four copper bars, and two end surfaces of the periphery of the bus duct body are respectively provided with four chutes. The two sides of the bus duct body are respectively connected with a protection frame in a penetrating and sliding manner. According to the bus duct with the double dustproof structures, by arranging a protection frame, a spring and a rubber inclined block, the protection frame is pulled, so that the protection frame drives an elastic clamping block to slide in a sliding groove, and meanwhile, a copper bar extrudes an inclined surface of the rubber inclined block along with movement of the protection frame, so that the rubber inclined block drives a limiting plate to move towards two sides of a through groove along with extrusion of the copper bar; therefore, the limiting plates extrude springs in the through grooves, the springs drive rubber inclined blocks to be tightly attached to the surfaces of the copper bars through elastic force, the copper bars are fixedly clamped, shaking of the copper bars is avoided, and the stability of the bus duct body in use is improved.

The utility model relates to the technical field of jack boxes, in particular to a branching device of a bus duct jack box, which comprises a jack box body, a heat dissipation structure and a branching structure, the heat dissipation structure comprises a filter screen and a heat dissipation fan, and the inner wall of the right side of the jack box body is fixedly connected with the filter screen and the heat dissipation fan. The branching structure comprises bases, a first clamping plate and a second clamping plate, the inner wall of the jack box body is fixedly connected with six bases, the tops of the bases are fixedly connected with the first clamping plate, the first clamping plate is slidably connected with a sliding rod, the top of the sliding rod is fixedly connected with a limiting plate, the sliding rod is slidably connected with the second clamping plate, and the second clamping plate is in threaded connection with a threaded rod. The threaded rod is rotationally connected with the first clamping plate. According to the utility model, the branching structure is arranged, so that a wire can be clamped, an operator can sort out the wire conveniently, and maintenance is facilitated. According to the utility model, the heat dissipation structure is arranged, so that the entering air can be filtered, and the heat dissipation performance of the jack box body is improved.

The present invention relates to a positioning device for positioning a sheet-shaped electrical conductor on a cooler, comprising a protrusion which is provided in the electrical conductor, wherein the protrusion has a defined height and is configured to form a gap between the electrical conductor and the cooler and wherein the gap has essentially the defined height of the protrusion.

The present invention relates to an electrical cabinet (31) equipped with a high-power converter (11), the high-power converter (11) comprising at least three power modules (12), at least one reactor (13), a cooling system (14) configured to cool the at least three power modules (12) and the at least one reactor (13), and a plurality of high-power conductors (1) that establish a three-phase current path from the power inlet (15) of the electrical cabinet (31) to the power outlet (16) of the electrical cabinet (31) via the at least three power modules (12) and the at least one reactor (13), wherein at least one of the high-power conductors (1) is manufactured at least partially by additive manufacturing.

The utility model discloses a power assembly busbar heat dissipation device, and relates to the technical field of power electronic devices. The device comprises a busbar, a water cooling plate and a power assembly, the busbar comprises a first busbar and a second busbar, the water-cooling plate comprises a first water-cooling plate and a second water-cooling plate, the first water-cooling plate is arranged between the power assembly and the first busbar, and the second water-cooling plate is arranged between the second busbar and the first busbar. According to the power assembly busbar heat dissipation device provided by the utility model, through the arrangement of the busbar and the water cooling plate, the busbar is directly contacted with the water cooling plate, so that the heat dissipation efficiency of the busbar can be accelerated; the water cooling plate is close to the power assembly at the same time, and direct heat dissipation of the power assembly can be accelerated.