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CN-224217913-U - Busbar structure and circuit breaker

CN224217913UCN 224217913 UCN224217913 UCN 224217913UCN-224217913-U

Abstract

The application provides a busbar structure and a circuit breaker, wherein the busbar structure comprises a busbar, a radiating component and a mounting bracket, wherein the busbar is used for being mounted on a circuit breaker base of the circuit breaker and is connected with an external conducting piece, the radiating component is connected to at least one side of the busbar and is in heat exchange contact with the busbar to radiate the busbar, the mounting bracket is respectively connected with the busbar and the circuit breaker base, so that heat generated during operation of the busbar can be timely transferred to the radiating component to exchange heat, the radiating component can radiate and cool the busbar, the radiating efficiency and the radiating performance of the busbar are improved, the working temperature of the busbar is reduced, the good temperature rise effect is realized, the phenomenon that the busbar and peripheral parts thereof are aged too fast and have damaged performance is avoided to a certain extent, the working performance and the service life of the busbar and the peripheral parts thereof are ensured, the use safety is improved, and the working performance and the service life of the circuit breaker with the busbar structure are further ensured.

Inventors

  • Xun chun
  • CHENG YIFENG

Assignees

  • 德力西电气有限公司

Dates

Publication Date
20260508
Application Date
20250530

Claims (10)

  1. 1. A busbar structure for a circuit breaker, the busbar structure comprising: the busbar is used for being mounted on a breaker seat body of the breaker and connected with an external conductive piece; A heat dissipation component connected to at least one side of the busbar and in heat exchange contact with the busbar to dissipate heat of the busbar, and The circuit breaker comprises a mounting bracket, wherein one side of the mounting bracket is connected with the busbar, the other side of the mounting bracket is used for being connected with the circuit breaker base body, and at least part of the heat dissipation assembly is located on one side of the mounting bracket, which is used for facing the external conductive piece.
  2. 2. The busbar structure of claim 1, wherein the heat dissipating assembly comprises a heat sink and a plurality of heat sinks; The heat dissipation seat is provided with a horizontal section and a vertical section, the horizontal section is in heat exchange contact with the busbar, the vertical section is arranged on one side of the horizontal section, which is away from the busbar, and a plurality of heat dissipation fins are arranged on one side of the horizontal section, which is used for facing the external conductive piece, at intervals.
  3. 3. The busbar structure of claim 2, wherein a plurality of the fins are spaced apart along the length of the vertical section; And/or a plurality of the cooling fins are arranged at intervals along the width direction of the vertical section; And/or the shape of the horizontal section facing to one side of the busbar is matched with the shape of the area of the busbar corresponding to the horizontal section.
  4. 4. The busbar structure of claim 1, wherein the number of the heat dissipation assemblies is two, and the two heat dissipation assemblies are separately disposed on two sides of the busbar along the thickness direction of the busbar.
  5. 5. The busbar structure of claim 1, wherein the busbar is provided with a first connection hole, the heat sink assembly is provided with a second connection hole, and the busbar and the heat sink assembly are connected by a first fastener passing through the first connection hole and the second connection hole.
  6. 6. The busbar structure of claim 5, wherein at least two first connecting holes are formed in the busbar at intervals, at least two second connecting holes are formed in the busbar, at least two first fastening pieces are formed in the busbar, and the first connecting holes, the second connecting holes and the first fastening pieces are connected in a one-to-one correspondence.
  7. 7. The busbar structure of claim 1, wherein the heat dissipating component is integrally formed with the mounting bracket; Or be provided with first connecting hole on the female row, be provided with the second connecting hole on the radiator module, be provided with the third connecting hole on the installing support, female row radiator module the installing support is through wearing to establish first connecting hole the second connecting hole the first fastener in the third connecting hole links together, just radiator module corresponds the installing support with the junction of circuit breaker pedestal has dodges the hole.
  8. 8. The busbar structure of claim 1, wherein a first mounting hole is formed in a side of the mounting bracket, which is used for being connected with the circuit breaker base, a second mounting hole is formed in the circuit breaker base, and the mounting bracket is mounted on the circuit breaker base through a second fastener penetrating through the first mounting hole and the second mounting hole.
  9. 9. A circuit breaker, comprising a circuit breaker base and a busbar structure according to any one of claims 1 to 8; the busbar structure is arranged on the breaker base body.
  10. 10. The circuit breaker of claim 9, wherein the circuit breaker base has a mounting cavity disposed therein, the mounting cavity having an opening for an externally facing conductive member, the busbar structure being disposed within the mounting cavity; The circuit breaker base is provided with a plurality of installation cavities at intervals, the busbar structure is a plurality of, one busbar structure is correspondingly installed in one installation cavity.

Description

Busbar structure and circuit breaker Technical Field The application relates to the technical field of electrical equipment, in particular to a busbar structure and a circuit breaker. Background Low voltage circuit breakers are important electrical components in low voltage distribution systems, such as drawer type circuit breakers, which not only switch on and off the circuit infrequently with load, but also automatically trip to shut down the fault circuit when the circuit is shorted, overloaded, and low voltage (or no voltage), thereby protecting the line and the consumer. The busbar of the low-voltage circuit breaker is an important part for connecting the circuit breaker with an external conductive part, and when the circuit breaker works, the busbar needs to bear and break larger current. In the related art, the bus bar has higher working temperature under the conditions of long-time running and working, long-time severe environment and the like, so that the bus bar and peripheral parts thereof are aged too fast, the performance is damaged, the service life is shortened, potential safety hazards exist, and the performance and the service life of the circuit breaker are influenced. Disclosure of utility model The application provides a busbar structure and a circuit breaker, which are used for solving the problem that the working temperature of a busbar is relatively high under the conditions of long-time operation, long-time severe environment and the like, realizing the cooling and the temperature rising of the busbar, ensuring the performance and the service life of the busbar and peripheral parts thereof. In a first aspect, the application provides a busbar structure for a circuit breaker, the busbar structure comprising a busbar for mounting to a circuit breaker housing of the circuit breaker and for connection with an external conductive member. And the heat dissipation assembly is connected to at least one side of the busbar and is in heat exchange contact with the busbar so as to dissipate heat of the busbar. And one side of the mounting bracket is connected with the busbar, the other side of the mounting bracket is used for being connected with the circuit breaker base, and at least part of the heat dissipation assembly is positioned on one side of the mounting bracket, which is used for facing the external conductive piece. According to the busbar structure, the heat radiating component is arranged on at least one side of the busbar and is in heat exchanging contact with the busbar, namely, heat of the busbar can be transmitted to the heat radiating component for heat exchanging, and the heat radiating component can radiate and cool the busbar, so that when the busbar structure is used, heat generated during working can be transmitted to the heat radiating component in time for heat exchanging, the heat radiating efficiency and the heat radiating performance of the busbar are improved, the working temperature of the busbar is reduced, a better temperature rising effect is realized, and accordingly the phenomenon that the busbar and peripheral parts thereof are damaged due to too high working temperature under the conditions of long-time running work, long-time severe environment and the like is avoided to a certain extent, the working performance and the service life of the busbar and the peripheral parts thereof are guaranteed, the service safety is improved, and further the performance of the circuit breaker with the busbar structure is guaranteed, and the service life of the circuit breaker is prolonged. Meanwhile, the busbar is assembled on the circuit breaker base body through the mounting bracket, so that the busbar is convenient to assemble on the circuit breaker. Since at least part of the heat dissipation assembly is arranged on the side of the mounting bracket for facing the external conductive member, i.e. the mounting bracket is located on the side of at least part of the heat dissipation assembly for facing away from the external conductive member, the mounting bracket does not interfere with the assembly and heat dissipation of the heat dissipation assembly and thus does not interfere with the heat dissipation of the busbar. In one possible design, the heat dissipating assembly includes a heat sink and a plurality of heat sinks. The heat dissipation seat has horizontal segment and vertical section, and horizontal segment and female heat transfer contact, and vertical section sets up the one side of deviating from female row at horizontal segment, and a plurality of fin intervals set up the one side that is used for towards outside electrically conductive piece at horizontal segment. Through above-mentioned scheme, make the radiating component include the radiating seat, the radiating seat has horizontal segment and vertical section, with horizontal segment and female heat transfer contact of arranging, the heat transfer path is great, and the heat of being convenient for female