42results about "Contacts heating/cooling" patented technology

The present invention relates to a three-position disconnector switch, comprising: an earthing contact (1), a power out contact (2), a power in contact (3), a piston (4), and a threaded rod (5). A length of the piston is such that in a first switch position an outer surface of a wall of the piston makes an electrical contact between the power out contact and the power in contact. The length of the piston is such that in a second switch position the outer surface of the wall of the piston does not make an electrical contact with either the earthing contact or the power in contact. The length of the piston is such that in a third switch position the outer surface of wall of the piston makes an electrical contact between the earthing contact and the power out contact. The piston comprises an inner threaded section (7) configured to engage with the threaded rod, wherein a length of the inner threaded section is less than the length of the piston. Rotation of the threaded rod is configured to engage with the inner threaded section to move the switch between the different switch positions.

The invention relates to a circuit breaker comprising:-a switching element (2); -a first terminal (1); -a second terminal (1); a heat sink (7); and-an air duct (8); wherein the switching element comprises two contacts, the two contacts are configured to be in contact with each other and can also be separated from each other, the two contacts are a fixed contact and a movable contact, and when the two contacts are separated from each other, the first terminal is electrically connected to one of the two contacts, and when the two contacts are electrically connected to the other of the two contacts, the second terminal is electrically connected to the other of the two contacts. The second terminal is electrically connected to the other one of the two contacts; wherein the heat sink is connected to the first part of the circuit breaker; wherein the first opening end of the air pipe is connected to the radiator, so that air leaving the radiator can enter the air pipe; and wherein at least a portion of the air duct is oriented vertically or oriented at an angle to the vertical direction.

To provide a conductive member with a cooling structure which can reduce the weight and the size.SOLUTION: A conductive member 1 with a cooling structure includes: a conductor plate 11; a groove member 12 which extends along a partial shape 11a of the conductor plate 11, has a shape such that a flow channel groove 121 constituting a part of a coolant flow channel 1a flowing a coolant therein is provided, and is formed of an insulating resin; a metal cover 13 that is a metal cover constituting a coolant flow channel 1a by blocking a groove opening 121a of the flow channel groove 121, and with which the conductor plate 11 is overlapped; a pair of coolant inlet and outlet 14 provided on the metal cover 13, and a heat transfer material 15 which is sandwiched between the metal cover 13 and the conductor plate 15, and is brought into close contact with the metal cover 13 and the conductor plate 11.SELECTED DRAWING: Figure 2

The application discloses a vacuum switch fluid heat dissipation device and method and a vacuum switch, relates to the technical field of high-voltage electrical apparatuses, and comprises a fluid circulation pipeline arranged in a static contact and a static guide rod; the fluid circulation pipeline is connected with an external circulation cooling system. By reasonably distributing the fluid circulation pipeline in the switch contact and matching the distribution characteristics of the high-temperature area of the switch contact, the fluid medium can be fully utilized for heat dissipation according to the temperature characteristic distribution of the switch contact, the high-temperature area of the switch contact can be favorably radiated, the heat dissipation area of the switch contact is larger, the heat dissipation efficiency is higher, and the influence of high temperature on the switch contact is avoided. The vacuum switch fluid heat dissipation device is applied to the vacuum switch, the switch contact in the vacuum switch is effectively cooled and radiated, the aging of the contact material and the guide rod material is avoided, the service life of the contact and the guide rod is prolonged, and the normal work and safe operation of the vacuum switch are ensured.

The utility model provides a copper contact with an arc protection structure, which relates to the technical field of copper contacts and comprises a base, the top of the base is fixedly connected with a shell and a plurality of supporting rods, and permanent magnet rings are fixedly connected among the top ends of the supporting rods. The outer surface of the permanent magnet ring is fixedly connected with a spiral heat dissipation plate, a surrounding wire is spirally wound on the outer surface of the permanent magnet ring, one end of the surrounding wire is electrically connected with an output wire, and the other end of the surrounding wire is electrically connected with a receiving wire. According to the utility model, an external magnetic field is applied through the permanent magnet ring to change the path of an electric arc, so that the path of the electric arc deflects, the electric arc is easier to disperse and extinguish, and meanwhile, the electric arc can be guided to a heat absorption area at the spiral heat dissipation plate to absorb heat generated by the electric arc, thereby reducing the temperature of the electric arc and reducing the damage of the electric arc to a surrounding wire; therefore, the arc-proof effect is achieved.

A circuit breaker includes upper and lower terminals, a switching element, an insulation housing, a heat collector, and a heatsink. The upper terminal is connected to a fixed contact of the switching element. The lower terminal is connected to a moveable contact of the switching element. The insulation housing at least partially surrounds the upper and lower terminals, and the switching element. The heat collector is partially embedded within the insulation housing. The heat collector is separated from the upper and lower terminals, and the switching element. A surface of the heat collector facing outwards from the circuit breaker is uncovered and connects to the heatsink.

The invention provides an electrical contact assembly. The electrical contact assembly comprises an electrical contact, a laminated soldering lug and a supporting piece, the laminated soldering lug is arranged between the electric contact and the supporting piece and is connected with the electric contact and the supporting piece in a welding manner; one side face of the laminated soldering lug is a first soldering face, the other side face opposite to the first soldering face is a second soldering face, the first soldering face is welded to the electrical contact, and the second soldering face is welded to the supporting piece; the laminated soldering lug is made of a layered composite material and comprises 2N + 1 material layers, the (2N + 1) th material layer in the laminated soldering lug is made of silver alloy, the 2Nth material layer in the laminated soldering lug is made of copper or copper alloy, and N is a positive integer greater than 0. According to the invention, through the technical means of setting the laminated soldering lug of the solder layer as the multilayer material layer, the temperature rise of the electrical contact assembly is reduced, and the problem of slippage failure of the electrical contact caused by resistance heat of the solder layer is avoided, so that the overload tolerance capability of a switching electric appliance product is improved, and the service life of the switching electric appliance product is prolonged.

The present invention relates to a circuit breaker, comprising: - a switching element (2); - a first terminal (1); - a second terminal (1); - a heatsink (7); and - an airduct (8); wherein the switching element comprises two contacts configured to be brought into contact with each other and configured to be separated from each other, wherein the two contacts are a fixed contact and a moveable contact, and wherein when the two contacts are separated from each other the first terminal is electrically connected to one of the two contacts and the second terminal is electrically connected to the other of the two contacts; wherein the heatsink is connected to a first part of the circuit breaker; wherein a first open end of the airduct is connected to the heatsink, such that air exiting the heatsink can enter the airduct; and wherein at least a portion of the airduct is oriented vertically or oriented at an angle to the vertical.

A relay device includes a first contact, a second contact, a first conductor, a second conductor, a housing, and a heat transfer member. The first contact and the second contact are switchable between a state of being close to each other and a state of being separated from each other. The first contact is electrically coupled at the first conductor. the second contact is electrically coupled at the second conductor. The housing accommodates the first contact, the second contact, the first conductor, and the second conductor. The heat transfer member is higher in thermal conductivity than the housing. The heat transfer member extends from outside the housing to inside the housing and is in contact with one or both of the first conductor and the second conductor.

The utility model relates to the technical field of bridge-type contact structures, and discloses a bridge-type contact structure with a heat dissipation function, which comprises a bus copper bar and contact bridge mounting pieces, the contact bridge mounting pieces are arranged on the upper side and the lower side of the bus copper bar, a fixing plate is fixedly arranged on the bus copper bar, and the fixing plate is connected with the contact bridge mounting pieces; a plurality of contact bridges and spring pieces are arranged in the contact bridge mounting piece, and the spring pieces are mounted above the contact bridges; and a plurality of heat dissipation grid sheets are arranged on the contact bridge mounting piece. According to the utility model, the plurality of heat dissipation grid sheets are used to substantially reduce temperature rise, the spring sheet is used to press the contact bridge, the balance of pressure at two ends of the contact sheet and the assembly efficiency are substantially improved, the contact bridge installation member is positioned and fixed on the upper and lower sides of the bus copper bar through the fixing plate, and then the heat dissipation grid sheets are used to dissipate heat of the bridge-type contact. The contact surface area with air is increased, the temperature rise is effectively reduced, the contact oxidation risk is reduced, conductivity and heat dissipation are considered, and a good heat dissipation function is achieved.

The utility model provides a static contact structure and a switching device, and relates to the technical field of electrical equipment. The static contact structure provided by the utility model comprises a contact piece, a contact point, a connecting block and a terminal strip. The contact is connected to one side of the contact piece and used for being matched with a moving contact structure, the connecting block and the terminal strip are connected to the other side of the contact piece at intervals, and the connecting block has guidance quality. In the direction from one side of the contact piece to the other side of the contact piece, the projection of the connecting block covers the projection of the contact. As such, the connection block may also provide a flow path for the current. Through the arrangement of the connecting block, the sectional area of a part used for bearing current between the contact and the terminal strip can be larger, so that the current-carrying capacity of the part is larger, the temperature rise problem at the static contact structure is improved, and the temperature rise of a switching device carrying the static contact structure can be reduced.

Power distribution unit (1) with at least two electrical connection areas, namely at least one first electrical connection area (2, 2') and at least one second electrical connection area (3, 3'), wherein the first electrical connection area (2, 2') has at least one fixed first electrical contact element (4a-4g) and the second electrical connection area (3, 3') has at least one fixed second electrical contact element (5a-5g), wherein the first electrical contact element (4a-4g) and the second electrical contact element (5a-5g) are electrically connectable and disconnectable via at least one movable third electrical contact element (6a-6g), wherein the third electrical contact element (6a-6g) is biased into a switching position (A, B) via at least one elastic element (7) and can be actuated into at least one other switching position (A, B) via an actuator unit (8),wherein the actuator unit (8) comprises at least one actuator (9) and at least one switching shaft (10) which is movable via the actuator and, depending on the actuated switching position (A, B), either leaves the third electrical contact element (6a-6g) in the pre-tensioned switching position (A, B) or moves it against the spring force of the elastic element (7) into at least one other switching position (A, B), wherein the switching shaft (10) drives a switching wheel (32) via a drive wheel (30) and the combination of switching wheel (32)-drive wheel (30) constitutes a stepping mechanism (41).

A switch unit and a switch cabinet, the switch unit is arranged in the switch cabinet, the switch unit comprises: a static contactor having at least one contact piece; at least one set of knife switches movable between a closed position and an open position to contact or separate from the corresponding contact piece to make the switch unit in a closed state or an open state; wherein the static contactor further comprises a heat sink, and a chamfer is provided between the heat sink and the contact piece, and the heat sink is configured to dissipate heat at the static contactor to the outside.

An electrical distribution unit (1) comprising at least two electrical connection regions, having respectively at least a first and a second fixed electrical contact element that can be electrically connected and disconnected via at least a third movable electrical contact element (6a-6g), pre-stressed in a switching position (A, B) via at least one elastic element (7), and actuated in at least one other switching position (A, B) via an actuator unit (8) having at least one actuator (9) and at least one commutator shaft (10) movable via the actuator, the actuator unit (8) driving a commutator wheel (32) via a drive wheel (30), and the commutator wheel (32)-drive wheel (30) combination constituting a stepper transmission (41). [Fig 3]

The present invention relates to a circuit breaker, comprising: - an upper terminal (1); - a lower terminal (2); - a switching element (3); - an insulation housing (6); - a heat collector (7); and - a heatsink (8); wherein the upper terminal is electrically connected to a fixed contact of the switching element; wherein the lower terminal is electrically connected to a moveable contact of the switching element; wherein the insulation housing surrounds at least part of the upper terminal, at least part of the lower terminal, at least part of the switching element; wherein the heat collector is at least partially embedded within the insulation housing, wherein the heat collector is separated from the at least part of the upper terminal, the at least part of the lower terminal, and the at least part of the switching element by material of the insulation housing; wherein at least a part of a surface of the heat collector facing outwards from the circuit breaker is not covered by material of the insulation housing; and wherein the heatsink is connected to the part of the surface of the heat collector facing outwards from the circuit breaker.

A heat transfer assembly for a vacuum circuit breaker includes a plate having a plurality of fins and adapted to be removably attached to a conductor casing, and a shield adapted to be removably connected to the conductor casing. The shield is arranged outwardly and surrounding the plate to contain electric field within a space defined between the shield and the plate. The shield includes a plurality of openings to allow a flow of an insulation gas between the space and exterior of the shield.

A gas-insulated switch includes: a heat generator that generates heat when principal current flows; and an electrical connector (40) that is a portion of electrical connection between a rod-shaped conductor and a cylindrical conductor forming a conduction path of the principal current, wherein the electrical connector (40) includes: a plurality of ring-shaped conductors (84a, 84b, 84c, 84d) placed between the rod-shaped conductor (88) and the cylindrical conductor (89), the plurality of ring-shaped conductors (84a, 84b, 84c, 84d) includes first ring-shaped conductors (84b, 84c, 84d) and a second ring-shaped conductor (84a), the second ring-shaped conductor (84a) being disposed at a position more distant from the heat generator than the first ring-shaped conductors (84b, 84c, 84d), and an insulating layer (85) is provided between the first ring-shaped conductors (84b, 84c, 84d) and the cylindrical conductor (89) or between each of the first ring-shaped conductors (84b, 84c, 84d) and the rod-shaped conductor (88).

The utility model relates to a static contact structure, an electric appliance and a high-voltage electric appliance. The key points of the technical scheme are that the static contact structure comprises a plug, a diverter connected with the plug, a static contact connected with the diverter and an arc striking assembly connected with the static contact; the arc striking assembly is arranged above the shunt; the static contact and the arc striking assembly are respectively provided with a bending part, the connecting path of the static contact and the arc striking assembly is wave-shaped, and the part, far away from the static contact, of the arc striking assembly is parallel to the shunt; a high-voltage electric appliance or an electric appliance comprises a main body, a moving contact and a static contact structure. The moving contact and the static contact are matched with each other to control the on-off of the main body circuit; the static contact structure has the beneficial effects that the connecting path of the static contact and the arc striking assembly is wavy, the heat dissipation path and area are increased, and the heat dissipation efficiency of the static contact structure is improved.

The invention provides an electric moving contact device which at least comprises a moving contact supporting piece and a moving contact, the moving contact supporting piece is made of a steel material, the moving contact is made of a copper material, the moving contact supporting piece is provided with an upper block, a middle block and a lower block, the upper block is provided with a driven part, the middle block is provided with a driven part, and the lower block is provided with a driven part. The middle block is provided with a fulcrum portion, the lower block is provided with a moving contact supporting portion, the moving contact is arranged on the moving contact supporting portion of the lower block, and the moving contact and the steel moving contact supporting portion of the lower block are fixedly or movably arranged together. Heat generated after current passes through the moving contact is guided to the middle block and the upper block through a steel material, a magnetic field generated after current passes through the moving contact acts on the moving contact supporting piece, and the moving contact supporting piece emits an electromagnetic field to a moving contact arc generation position after being magnetized to drive arc deformation or / and displacement. Therefore, the heat dissipation performance and the arc extinguishing capability of the switch can be greatly improved.

A contact finger structure comprises a connecting gate plate and is characterized in that the connecting gate plate comprises at least two partition plates which are arranged in parallel at intervals, a connecting block is arranged between the two partition plates in a pivoted mode, a plurality of terminal shafts are arranged at one end of the connecting gate plate, and the two ends of each terminal shaft penetrate through the two partition plates respectively. Heat dissipation grooves are formed in the positions, close to the wiring end shaft, of the two partition plates. When bearing a short-circuit current, the isolation switch can reduce the heating phenomenon of a terminal shaft of the isolation switch without affecting the strength, so as to ensure the reliable operation in the worst environment.

The utility model discloses a moving contact of a high-voltage vacuum circuit breaker, which comprises a moving contact, the head of the moving contact is provided with a support ring, and the end face of the support ring is uniformly provided with a plurality of contact pieces which are bent towards the direction far away from the axis of the support ring at equal intervals by taking a circle point as the axis. The contact piece is provided with an abutting part, the contact piece is provided with an inclined guide part and is arranged above the abutting part, the head part of the moving contact is provided with a concave cavity, and the concave cavity is provided with a plurality of inclined heat dissipation holes. According to the utility model, a multi-contact-piece layered contact mode is adopted, so that the moving contact is closed before the static contact, the stress is balanced, the conductive area is enlarged, and the local resistance and heat are reduced; the elastic contact piece enhances the occlusion tightness, and cooperates with the honeycomb-shaped heat dissipation holes in the moving contact to improve the air convection efficiency, and through the above design scheme, the product has the advantages of uniform stress, reduced local temperature rise, prolonged service life and the like.

The utility model discloses a power distribution unit of a power battery, the power battery and a vehicle, the power distribution unit comprises a shell with a containing cavity, and the containing cavity is provided with an opening; the relay is arranged in the containing cavity and comprises a bottom edge, a first side edge, a second side edge, a third side edge and a fourth side edge, the first side edge, the second side edge, the third side edge and the fourth side edge are sequentially arranged in the circumferential direction, at least one of the side edges adheres to the opposite cavity wall of the containing cavity, and the bottom edge adheres to the cavity bottom of the containing cavity. As the relay is bonded with the shell and the bonding glue has curing time, the relay is connected with the conductive busbar during bonding, and the connection part of the contact of the relay and the conductive busbar can be adjusted by using the activity of the bonding glue when the bonding glue is not cured; therefore, the problem that the connection part of the contact of the relay and the conductive busbar is stressed due to a size gap generated by superposition of manufacturing tolerances is solved, the problem that the connection part of the contact of the relay and the conductive busbar is loosened due to stress and the contact area is reduced is solved, and the problem that the working temperature of the relay exceeds a threshold value is solved.

The application relates to a smart park energy operation and maintenance management method based on big data applied to the technical field of energy operation and maintenance management, wherein through the design of a fault prediction unit and a power consumption redistribution unit, power consumption equipment can be reselected at least twice, so that the power supply mode of the power consumption equipment is maintained in a safe and stable state, compared with the prior art, the occurrence of unplanned power outage is greatly reduced, and the economic loss caused by the unplanned power outage to the production activities of the smart park is effectively reduced; in cooperation with the setting of a contact precooling unit, the switch contact of a static switch (STS) can be pre-cooled in advance before power supply switching, the temperature peak value of the switch contact after switching can be effectively reduced in the vertical direction, the cooling time of the switch contact after switching can be reduced in the horizontal direction, the stable switching of the static switch (STS) to the power supply mode is effectively maintained, the smart power supply in the park is effectively maintained, and the stable operation of the power consumption equipment in the park is ensured.

The invention relates to the technical field of low-voltage electric appliances, in particular to a drawer type switch. The invention provides a drawer type switch. The core of the drawer type switch is that a contact system and an electric connection structure both adopt an integrated design of multi-branch parallel and integrated molding. Specifically, a contact body of a static contact and a plurality of first branch rows are integrally formed, and a second body row of a movable busbar and a plurality of second branch rows are integrally formed; correspondingly, the first wiring component and the second wiring component also adopt a bus bar and a multi-branch bar which are integrally formed. And heat dissipation intervals are arranged among the branch rows. According to the structure, the surface of a current flowing path is increased through a multi-branch row structure, the current carrying capacity is improved under the alternating current working condition, meanwhile, contact resistance in split connection is eliminated through integrated forming, shunt is conducted through multi-branch parallel connection, a heat dissipation air channel is formed, the heat dissipation capacity is remarkably improved, temperature rise is effectively controlled, meanwhile, material lap joint redundancy is reduced, and the service life of the heat dissipation device is prolonged. And the optimization of the copper consumption is realized.

The invention relates to a power distribution unit having at least one first electrical connection region and at least one second electrical connection region, a first electrical contact element of the first electrical connection region and a second electrical contact element of the second electrical connection region being electrically connectable and disconnected via at least one movable third electrical contact element, the third electrical contact element is biased in a switching arrangement by means of at least one elastic element and can be actuated in at least one different switching arrangement by means of an actuator unit having at least one actuator and at least one switching shaft which can be moved by means of the actuator, and on the basis of the actuated switch setting, the third electrical contact element is in a biased switch setting or the third electrical contact element is moved in at least one different switch setting against the spring force of the elastic element, the switch shaft drives the switch wheel via the drive wheel, the switch wheel-drive wheel combination forming a step gear.

The utility model belongs to the technical field of isolating switches, and discloses an isolating switch contact knife, which comprises a contact knife body for an isolating switch, grooves are formed on two side walls of the contact knife body, a plurality of cylindrical bumps positioned in the grooves are integrally formed on the side walls of the contact knife body side by side, and the bumps are arranged on the side walls of the contact knife body. A plurality of through open holes are formed between the other two side walls of the contact knife body side by side, a connecting piece is integrally formed at the top of the contact knife body, the top of the connecting piece is sleeved with an insulating handle, and the diameter values of the connecting holes are sequentially increased. The connecting part and the contact knife body, the protruding block and the contact knife body, and the connecting piece and the contact knife body are all of a casting integrally-formed structure. According to the scheme, the defect that heat dissipation of the contact knife body is relatively slow due to the fact that the structure of the contact knife body is not optimized is overcome.

A switching device (100) for opening and closing a circuit is provided. The switching device comprises a vacuum interrupter unit (124) with a first stem (126) and a second stem (128). The switching device further comprises a rigid contact member (140) having a slot (142) and a contact arm (144). The switching device further comprises a compressible contact member (150) positioned inside the slot of the rigid contact member. In the switching device, the second stem is configured to move linearly; such that in a first position, the second stem is in electrical engagement with the compressible contact member thereby closing the circuit, and in the second position, the second stem is out of electrical engagement with the compressible contact member thereby opening the circuit.

To provide a conductor member with a cooling structure capable of improving the cooling efficiency of a conductor member.SOLUTION: A conductor member 1 with a cooling structure includes a conductor member 11, a refrigerant case 12 formed of insulating resin and provided with a pair of refrigerant inlets and outlets for allowing a refrigerant to flow in and out, and a heat transfer member 13 having a first portion 131 connected to the conductor member 11 and a second portion 132 connected to the refrigerant case 12 in a state of contacting the refrigerant inside the refrigerant case 12, thereby connecting the conductor member 11 and the refrigerant case 12 to each other and receiving heat generated in the conductor member 11 at the first portion 131 and transferring it from the second portion 132 to the refrigerant flowing inside the refrigerant case 12.SELECTED DRAWING: Figure 3