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CN-122008927-A - Charging pile

CN122008927ACN 122008927 ACN122008927 ACN 122008927ACN-122008927-A

Abstract

The invention discloses a charging pile, which relates to the technical field of charging piles, wherein the charging pile comprises a plurality of contactors, a power distribution control board and a magnetic shielding layer, the contactors are electrically connected through conductive bars, the power distribution control board is arranged above the contactors and is electrically connected with the contactors for controlling charging power distribution, the magnetic shielding layer is arranged on the back surface of one side of the power distribution control board, which faces the contactors, at least one edge of the magnetic shielding layer exceeds the corresponding edge of a control board body to form an edge protection area, and the magnetic shielding layer is used for inhibiting low-frequency electromagnetic fields generated by current from the conductive bars from being diffracted into the power distribution control board. The technical scheme provided by the invention can solve the problems that the power distribution control board of the charging pile is close to the contact conductive bar, the strong low-frequency electromagnetic interference generated by the conductive bar is difficult to effectively inhibit, and the control board is unstable in work and low in charging safety and reliability.

Inventors

  • FU CHANGSHUN
  • WANG XIAOBO
  • MA LIQUN
  • FU YUFEI

Assignees

  • 公牛集团股份有限公司

Dates

Publication Date
20260512
Application Date
20260325

Claims (10)

  1. 1. A charging pile, comprising: A plurality of contactors (100), and a conductive strip (110) for connecting the plurality of contactors; A power distribution control board (200) which is provided above the plurality of contactors (100) and connects the plurality of contactors (100), and The magnetic shielding layer (300) is arranged on the back surface of the power distribution control board (200) facing the contactor (100), and at least one edge of the magnetic shielding layer (300) exceeds the corresponding edge of the control board body (210) to form an edge protection area (310), and the edge protection area (310) is used for inhibiting low-frequency electromagnetic fields generated by current from the conductive bars (110) from being diffracted into the power distribution control board (200).
  2. 2. The charging stake according to claim 1, characterized in that the magnetic shielding layer (300) extends beyond the control panel body (210) at both side edges in the length and/or width direction of the power distribution control panel (200) to form the edge protection area (310).
  3. 3. The charging stake according to claim 1, characterized in that the power distribution control board (200) is located directly above a plurality of the conductive bars (110) in parallel.
  4. 4. The charging peg of claim 1, wherein the magnetic shielding layer (300) extends beyond the edge of the control panel body (210) by a width of 10mm to 20mm.
  5. 5. The charging stake according to claim 1, characterized in that the ratio of the overstretched dimension of the magnetic shielding layer (300) in either extending direction to the dimension of the control panel body (210) in the width direction is 1/10 to 1/5.
  6. 6. The charging peg of claim 1, wherein the magnetic shielding layer (300) has a thickness of 0.4mm to 0.6mm.
  7. 7. The charging peg of claim 1, wherein the magnetic shielding layer (300) is made of nanocrystalline alloy or amorphous alloy or permalloy.
  8. 8. The charging stake according to claim 1, characterized in that a thermally and electrically conductive adhesive layer (400) is provided between the magnetic shielding layer (300) and the control board body (210), and the thermally and electrically conductive adhesive layer (400) has a thickness of 0.05mm to 0.15mm, and/or an insulating protective layer (500), the insulating protective layer (500) covers the side of the magnetic shielding layer (300) away from the control board body (210), and the outline dimension thereof in the plane is not smaller than the magnetic shielding layer (300).
  9. 9. The charging stake according to any of claims 1 to 8, characterized by further comprising a mounting bracket (600) having a mounting slot with its mouth facing away from the plurality of contactors (100), the power distribution control board (200) being provided in the mounting bracket (600) through the mounting slot, the magnetic shielding layer (300) and the power distribution control board (200) being provided in sequence within the mounting bracket (600).
  10. 10. The charging pile according to claim 9, further comprising two support members (700), the two support members (700) being connected to both ends of the mounting bracket (600), the plurality of conductive bars (110) being juxtaposed between the two support members (700).

Description

Charging pile Technical Field The invention relates to the technical field of charging piles, in particular to a charging pile. Background The output current of the direct current quick charging pile continuously rises, and part of high-power charging piles (such as megawatt charging piles) need to bear power frequency or low-frequency alternating current of 600A or even higher for a long time under the full-load working condition. Because the whole machine space is highly compact, the power distribution control board is usually arranged at the side position of the charging pile, copper bars are required to be connected with the power control board and the power module, the copper material usage amount is increased, and the charging pile is required to be provided with more space. Disclosure of Invention The invention mainly aims to provide a charging pile, and aims to solve the problems that the power distribution control board of the charging pile is close to a conductive bar of a contactor, strong low-frequency electromagnetic interference generated by the conductive bar is difficult to effectively inhibit, and the control board is unstable in work and low in charging safety and reliability. In order to achieve the above object, the present invention provides a charging pile comprising: a plurality of contactors and a conductive strip for connecting the plurality of contactors; A power distribution control board disposed above and connected to the contactors, and The magnetic shielding layer is arranged on the back surface of one side of the power distribution control board, which faces the contactor, and at least one edge of the magnetic shielding layer exceeds the corresponding edge of the control board body so as to form an edge protection area, and the edge protection area is used for inhibiting low-frequency electromagnetic fields generated by current from the conductive bars from being diffracted into the power distribution control board. In one embodiment, the magnetic shielding layer extends beyond the control board body at both side edges in the length and/or width direction of the power distribution control board to form the edge protection area. In one embodiment, the power distribution control board is located directly above the parallel plurality of conductive bars. In one embodiment, the magnetic shielding layer extends beyond the edge of the control panel body by a width of 10mm to 20mm. In one embodiment, the ratio of the overstretched dimension of the magnetic shield layer in either extending direction to the dimension of the control panel body in the width direction is 1/10 to 1/5. In one embodiment, the magnetic shield layer has a thickness of 0.4mm to 0.6mm. In one embodiment, the magnetic shielding layer is made of a nanocrystalline alloy or an amorphous alloy or permalloy. In an embodiment, a heat-conducting and electric-conducting glue layer is arranged between the magnetic shielding layer and the control panel body, and the thickness of the heat-conducting and electric-conducting glue layer is 0.05mm to 0.15mm. In an embodiment, the magnetic shielding device further comprises an insulation protection layer, wherein the insulation protection layer covers one side, far away from the control panel body, of the magnetic shielding layer, and the outline size of the insulation protection layer in a plane is not smaller than that of the magnetic shielding layer. In one embodiment, the power distribution control board further comprises a mounting bracket with a mounting groove, wherein the notch of the mounting groove faces away from the plurality of contactors, and the power distribution control board is arranged on the mounting bracket through the mounting groove. In an embodiment, the electric conduction device further comprises two supporting pieces, wherein the two supporting pieces are connected to two ends of the mounting bracket, and a plurality of electric conduction rows are arranged between the two supporting pieces in parallel. According to the technical scheme, the integral framework of the charging pile is not required to be changed, on the basis of the relative layout of the existing power distribution control board and the contactor, the magnetic shielding layer is arranged on the power distribution control board in a laminating mode, the magnetic shielding layer is arranged on one side surface of the power distribution control board, which faces the contactor, in a plane parallel to the main surface of the power distribution control board, and extends outwards along at least one edge direction, so that the edge of the magnetic shielding layer is located on the outer side of the corresponding edge of the control board body in the direction, and an edge protection area for blocking electromagnetic diffraction is formed. Therefore, by optimizing the spatial relationship and the dimensional fit between the magnetic shielding layer and the control panel, the magnetic shielding