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CN-122026142-A - Busbar assembly and electric connection assembly

CN122026142ACN 122026142 ACN122026142 ACN 122026142ACN-122026142-A

Abstract

The invention discloses a busbar assembly and an electric connection assembly. The busbar assembly comprises a busbar body, a liquid cooling pipe and a busbar, wherein the busbar body is provided with a groove which is formed on the busbar body and extends along the length direction of the busbar body, the liquid cooling pipe is accommodated in the groove of the busbar body and used for cooling the busbar, and the busbar is further provided with a bent flexible part which is connected with the end part of the busbar body, so that the busbar can elastically deform along the length direction. In the invention, the busbar assembly can absorb larger assembly errors and manufacturing errors, and can improve the current carrying capacity without increasing the cross section area of the busbar body.

Inventors

  • ZHANG RONG
  • LUO JIE
  • LIU JIAOYONG
  • YAO WEI

Assignees

  • 泰科电子(上海)有限公司

Dates

Publication Date
20260512
Application Date
20241111

Claims (20)

  1. 1. A busbar assembly, comprising: A busbar (1) having a busbar body (10) and a groove (101) formed on the busbar body (10) and extending in the longitudinal direction (Y) of the busbar body (10), and A liquid cooling tube (3) which is accommodated in a groove (101) of the busbar body (10) for cooling the busbar (1), The busbar (1) further has a bent flexible portion (12) connected to an end of the busbar body (1) so that the busbar (1) can be elastically deformed in the length direction (Y).
  2. 2. The busbar assembly of claim 1, wherein: The busbar body (10) is a single flat conductor, and the flexible portion (12) includes a plurality of bent flexible sheets (12 a) laminated together.
  3. 3. The busbar assembly of claim 2, wherein: The flexible portion (12) is riveted or welded to an end of the busbar body (1) to be electrically connected with the busbar body (1).
  4. 4. Busbar assembly according to claim 2, wherein the flexible sheet (12 a) is bent into an arc or wave shape.
  5. 5. The busbar assembly of claim 1, wherein: The busbar (1) is provided with two flexible parts (12), and the two flexible parts (12) are respectively connected with two ends of the busbar body (1).
  6. 6. The busbar assembly of claim 1, wherein: The busbar (1) has a single flexible portion (12), the single flexible portion (12) being connected to one end of the busbar body (1).
  7. 7. The busbar assembly of claim 1, wherein: The busbar body (10) has opposite sides in a thickness direction (Z) thereof, and the groove (101) is formed on one side of the busbar body (10).
  8. 8. The busbar assembly of claim 1, further comprising: And the insulating heat conduction pad (32) is arranged between the liquid cooling pipe (3) and the busbar body (10) and is used for transferring heat of the busbar body (10) to the liquid cooling pipe (3) and electrically isolating the busbar body (10) from the liquid cooling pipe (3).
  9. 9. The busbar assembly of claim 1, wherein: The liquid cooling tube (3) is in direct thermal contact with the busbar body (10) or is bonded to the busbar body (10) by a thermally conductive glue arranged between the liquid cooling tube (3) and the busbar body (10).
  10. 10. The busbar assembly of claim 8, further comprising: And the plurality of pressing devices (7) are arranged on the busbar body (10) and are used for pressing the liquid cooling pipe (3) in the groove (101) of the busbar body (10) so as to ensure that the liquid cooling pipe (3) is in reliable thermal contact with the insulating heat conducting pad (32) and ensure that the busbar body (10) is in reliable thermal contact with the insulating heat conducting pad (32).
  11. 11. The busbar assembly of claim 10, wherein: the plurality of pressing devices (7) are arranged in a row in the length direction (Y) of the busbar body (10); the pressing device (7) includes: An insulating pressure plate (71) straddling the liquid cooling tube (3), and Two screws (72) for fastening the two ends of the insulating pressing plate (71) to the busbar body (10) respectively, The insulating pressing plate (71) applies a predetermined pressing force on the top of the liquid cooling tube (3).
  12. 12. The busbar assembly of claim 1, wherein: The liquid cooling pipe (3) is flat and has two ends closed, and openings (3 c) allowing cooling liquid to flow through are respectively formed on the top surfaces of the two ends of the liquid cooling pipe (3).
  13. 13. The busbar assembly of claim 12, further comprising: A first pipe joint (3 a) connected to an opening (3 c) at one end of the liquid cooling pipe (3), and And the second pipe joint (3 b) is connected with an opening (3 c) at the other end of the liquid cooling pipe (3).
  14. 14. The busbar assembly of claim 1, wherein: The busbar (1) is provided with a single flexible part (12), and one end of the single flexible part (12) is connected with one end of the busbar body (1); The busbar (1) further has two connection ends (11) for electrically connecting to two busbars, respectively, one of the two connection ends (11) being connected to the other end of the flexible portion (12) and the other being connected to the other end of the busbar body (1).
  15. 15. An electrical connection assembly, comprising: two busbar assemblies, the busbar bodies (10) of which are stacked one above the other, and An insulating spacer (2) clamped between the busbar bodies (10) of the two busbar assemblies, The busbar assembly of any one of claims 1 to 14, the busbar body (10) having first and second sides opposite in a thickness direction (Z) thereof, the first side of the busbar body (10) being against the insulating separator plate (2), the liquid cooling tube (3) being located on the second side of the busbar body (10).
  16. 16. The electrical connection assembly of claim 15, further comprising: -a mounting shell (9) having a top plate (91) and a bottom plate (92) opposite in a thickness direction (Z) of the busbar body (10) and a front opening and a rear side plate (93) opposite in a width direction (X) of the busbar body (10), the two busbar bodies (10) and the insulating barrier (2) being fixedly mounted in the mounting shell (9).
  17. 17. The electrical connection assembly of claim 16, further comprising: -a fastening assembly (6) fastening two busbar bodies (10) and the insulating spacer (2) to a top plate (91) and a bottom plate (92) of the mounting shell (9).
  18. 18. The electrical connection assembly of claim 17, wherein: the electric connection assembly comprises a plurality of fastening assemblies (6), the fastening assemblies (6) are distributed at intervals in the length direction (Y) of the busbar body (10), and two adjacent fastening assemblies (6) are respectively located on two sides of the groove (101).
  19. 19. The electrical connection assembly of claim 17, wherein: the fastening assembly (6) comprises: A first insulating member (61) including an end portion (611) clamped between a top plate (91) and one busbar body (10) of the mounting case (9) and a columnar portion (612) passing through the two busbar bodies (10) and the insulating partition plate (2); A second insulator (62) sandwiched between a bottom plate (92) of the mounting case (9) and the other busbar body (10); a nut (64) fixed to a top plate (91) or a bottom plate (92) of the mounting case (9), and Bolts (63) passing through the top plate (91) and the bottom plate (92) of the mounting case (9) and the columnar portions of the first insulating member (61), The bolt (63) is in threaded connection with the nut (64), and the columnar portion (612) of the first insulator (61) electrically isolates the bolt (63) from the two busbar bodies (10).
  20. 20. The electrical connection assembly of claim 16, wherein: A first pipe joint (3 a) and a second pipe joint (3 b) of a busbar assembly pass through the top plate (91) of the mounting shell (9) and are fixed to the top plate (91) of the mounting shell (9); The first pipe joint (3 a) and the second pipe joint (3 b) of the other busbar assembly pass through the bottom plate (92) of the mounting shell (9) and are fixed to the bottom plate (92) of the mounting shell (9).

Description

Busbar assembly and electric connection assembly Technical Field The invention relates to a busbar assembly and an electric connection assembly comprising the busbar assembly. Background In the prior art, in order to electrically connect the bus bars in two cabinets, it is necessary to provide a horizontal bus bar connection assembly. The existing busbar connection assembly generally comprises an anode busbar and a cathode busbar, wherein two ends of the anode busbar are respectively and electrically connected with the anode busbars in the two cabinets, and two ends of the cathode busbar are respectively and electrically connected with the cathode busbars in the two cabinets. However, existing busbar is rigid and cannot absorb large installation and manufacturing errors, for example +/-10 mm. In addition, in order to be capable of bearing current above 3000A, the size of the existing busbar is large, so that the cross-sectional area of the busbar body is too large, assembly and enclosure are difficult, and cost is high. Disclosure of Invention The present invention is directed to solving at least one of the above-mentioned problems and disadvantages of the prior art. According to one aspect of the present invention, a busbar assembly is provided. The busbar assembly comprises a busbar body, a liquid cooling pipe and a busbar, wherein the busbar body is provided with a groove which is formed on the busbar body and extends along the length direction of the busbar body, the liquid cooling pipe is accommodated in the groove of the busbar body and used for cooling the busbar, and the busbar is further provided with a bent flexible part which is connected with the end part of the busbar body, so that the busbar can elastically deform along the length direction. According to an exemplary embodiment of the invention, the busbar is a single flat conductor, and the flexible portion comprises a plurality of folded flexible sheets laminated together. According to another exemplary embodiment of the present invention, the flexible portion is riveted or welded to an end of the busbar body to be electrically connected with the busbar body. According to another exemplary embodiment of the present invention, the flexible sheet is bent into an arc shape or a wave shape. According to another exemplary embodiment of the present invention, the busbar has two flexible portions connected to both ends of the busbar body, respectively. According to another exemplary embodiment of the invention, the busbar has a single flexible portion connected to one end of the busbar body. According to another exemplary embodiment of the present invention, the busbar body has opposite sides in a thickness direction thereof, and the groove is formed on one side of the busbar body. According to another exemplary embodiment of the present invention, the busbar assembly further comprises an insulating thermal pad disposed between the liquid-cooled tube and the busbar body for transferring heat from the busbar body to the liquid-cooled tube and electrically isolating the busbar body from the liquid-cooled tube. According to another exemplary embodiment of the invention, the liquid cooling tube is in direct thermal contact with the busbar body or is bonded to the busbar body by means of a thermally conductive glue arranged between the liquid cooling tube and the busbar body. According to another exemplary embodiment of the present invention, the busbar assembly further comprises a plurality of pressing means mounted on the busbar body for pressing the liquid cooling tube in the recess of the busbar body to ensure a reliable thermal contact of the liquid cooling tube with the insulating thermal pad and to ensure a reliable thermal contact of the busbar body with the insulating thermal pad. According to another exemplary embodiment of the present invention, the plurality of pressing devices are aligned in a length direction of the busbar body, the pressing devices include an insulating pressing plate straddling the liquid-cooled tube, and two screws respectively fastening both ends of the insulating pressing plate to the busbar body, the insulating pressing plate exerting a predetermined pressing force on a top of the liquid-cooled tube. According to another exemplary embodiment of the present invention, the liquid cooling pipe is flat and has both ends closed, and openings allowing the cooling liquid to flow therethrough are formed on the top surfaces of both ends of the liquid cooling pipe, respectively. According to another exemplary embodiment of the present invention, the busbar assembly further includes a first pipe joint connected to the opening of one end of the liquid cooling pipe, and a second pipe joint connected to the opening of the other end of the liquid cooling pipe. According to another exemplary embodiment of the present invention, the busbar has a single flexible portion, one end of which is connected to one end of the busbar body, and