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CN-224233539-U - Current transformer and current transformer module

CN224233539UCN 224233539 UCN224233539 UCN 224233539UCN-224233539-U

Abstract

The application discloses a converter and a converter module, wherein the converter comprises a power cavity, a converter main body and a PCB (printed circuit board) component, the power cavity is internally provided with a containing cavity, the converter main body is contained in the containing cavity, the converter main body comprises an alternating current switch, a reactor, the power module, a capacitor pool component and a direct current switch which are electrically connected in sequence, the alternating current switch and the direct current switch are arranged in a first overhaul area of the containing cavity, the reactor and the power module are arranged in a second overhaul area of the containing cavity, the PCB component is contained in the containing cavity and is electrically connected with the converter main body, the PCB component is arranged in the first overhaul area, and the PCB component is arranged above the direct current switch. The converter has compact overall structure layout and size, thereby reducing the occupied area required by the assembly of the converter, and being convenient for the operation and maintenance of the converter by users, and having the effects of improving the overhaul efficiency and reducing the maintenance cost.

Inventors

  • XU WEI
  • ZHAO YI

Assignees

  • 杭州禾迈电力电子股份有限公司

Dates

Publication Date
20260512
Application Date
20250523

Claims (10)

  1. 1. A current transformer, characterized in that the current transformer (100) comprises: The power cavity (10) is internally provided with a containing cavity (11), the containing cavity (11) is provided with a first overhaul area (111) and a second overhaul area (112), and the first overhaul area (111) and the second overhaul area (112) are arranged on two sides of the width direction of the power cavity; The converter body (20) is accommodated in the accommodating cavity (11), the converter body (20) comprises an alternating current switch (21), a reactor (22), a power module (23), a capacitor cell assembly (24) and a direct current switch (25) which are electrically connected in sequence, the alternating current switch (21) and the direct current switch (25) are arranged in the first overhaul region (111), the alternating current switch (21) is arranged below the direct current switch (25), the reactor (22) and the power module (23) are arranged in the second overhaul region (112), and the reactor (22) is arranged below the power module (23); The PCB assembly (30) is contained in the containing cavity (11) and is electrically connected with the converter main body (20), the PCB assembly (30) is arranged in the first overhaul area (111), and the PCB assembly (30) is arranged above the direct current switch (25).
  2. 2. The current transformer according to claim 1, characterized in that the receiving cavity (11) is configured as a closed chamber.
  3. 3. The current transformer according to claim 1, wherein the current transformer (100) further comprises a heat exchange assembly (40), the heat exchange assembly (40) being housed within the housing cavity (11); The heat exchange assembly (40) is arranged on one side, facing the power module (23), of the reactor (22), and sequentially performs air cooling and heat dissipation on the power module (23), the capacitor tank assembly (24), the PCB assembly (30), the direct current switch (25), the alternating current switch (21) and the reactor (22).
  4. 4. A converter according to claim 3, characterized in that the heat exchange assembly (40) comprises a liquid-cooled heat exchanger (41) and a fan, the liquid-cooled heat exchanger (41) is arranged on the air inlet side of the fan, and the fan can draw air from the position where the liquid-cooled heat exchanger (41) is located; wherein the air outlet side of the fan is arranged facing the power module (23).
  5. 5. The converter according to claim 4, wherein the converter (100) further comprises a heat dissipation cavity (51) and a heat exchange device (52), the heat exchange device (52) being mounted in the heat dissipation cavity (51) and being in communication with the liquid-cooled heat exchanger (41) for dissipating heat from a cooling medium in the liquid-cooled heat exchanger (41); Wherein, the heat dissipation cavity (51) is arranged at the top end of the power cavity (10).
  6. 6. The converter according to claim 5, characterized in that a pipe joint (511) is connected between the heat dissipation cavity (51) and the power cavity (10) in a sealing manner, and the pipe joint (511) is respectively communicated with the liquid cooling heat exchanger (41) and the heat exchange device (52).
  7. 7. The converter according to claim 4, wherein the number of the fans is plural, and the plural fans are sequentially arranged at intervals along the longitudinal direction of the liquid-cooled heat exchanger (41).
  8. 8. A converter according to claim 3, characterized in that said converter (100) further comprises a transit fan (60), said transit fan (60) being housed inside said housing cavity (11); The transfer fan (60) is arranged on one side of the capacitor pool assembly (24) facing the PCB assembly (30) and is used for blowing air to the PCB assembly (30).
  9. 9. A current transformer module comprising a plurality of current transformers (100) according to any one of claims 1 to 8, wherein a plurality of said current transformers (100) are connected in parallel.
  10. 10. The current transformer module according to claim 9, wherein a plurality of the current transformers (100) are arranged in parallel along the length direction of the power cavity, and two adjacent current transformers (100) of the plurality of current transformers (100) are in contact with a limit.

Description

Current transformer and current transformer module Technical Field The utility model belongs to the technical field of energy storage equipment, and particularly relates to a converter and a converter module. Background Converters are important components of energy storage devices for controllably converting the voltage, frequency, phase number, and other electrical quantities or characteristics of a power supply system. In the existing converter design, vulnerable key components such as a power module, a PCB assembly, an alternating current switch, a direct current switch and the like are generally distributed in a cabinet, and the layout mode has obvious defects that on one hand, the overall structure of the converter is oversized, the occupied area required by assembly is increased, the space utilization rate is low, and on the other hand, the components are distributed and arranged, so that a user faces a plurality of inconveniences when operating and maintaining, the overhaul efficiency is influenced, and the maintenance cost is increased. Disclosure of utility model In view of the foregoing, it is desirable to provide a current transformer and a current transformer module for solving the above-mentioned problems. A current transformer, the current transformer comprising: The power cavity is internally provided with a containing cavity, the containing cavity is provided with a first overhaul area and a second overhaul area, and the first overhaul area and the second overhaul area are arranged on two sides of the width direction of the power cavity; The converter body is accommodated in the accommodating cavity and comprises an alternating current switch, a reactor, a power module, a capacitor pool assembly and a direct current switch which are electrically connected in sequence, wherein the alternating current switch and the direct current switch are arranged in the first overhaul area, the alternating current switch is arranged below the direct current switch, the reactor and the power module are arranged in the second overhaul area, and the reactor is arranged below the power module; The PCB component is contained in the containing cavity and electrically connected with the converter main body, the PCB component is arranged in the first overhauling area, and the PCB component is arranged above the direct current switch. It can be understood that through the layout of the converter main body and the PCB assembly in the power cavity, the overall structure layout size of the converter is compact, so that the occupied area required by the assembly of the converter can be reduced, and on the other hand, the operation and maintenance of the converter by a user can be facilitated, and the converter has the effects of improving the overhaul efficiency and reducing the maintenance cost. In one embodiment, the receiving chamber is configured as a closed chamber. It can be understood that the converter main body and the PCB assembly are accommodated in the airtight accommodating cavity, so that electronic components of the converter can be well protected from water, the converter can adapt to severe environments, and the operation reliability of the converter is improved. In one embodiment, the converter further comprises a heat exchange assembly, and the heat exchange assembly is accommodated in the accommodating cavity; the heat exchange assembly is arranged on one side, facing the power module, of the reactor, and performs air cooling and heat dissipation on the power module, the capacitor pool assembly, the PCB assembly, the direct current switch, the alternating current switch and the reactor in sequence. It can be understood that the converter main body and the PCB assembly are radiated by utilizing an air cooling radiating mode, and in the process, the use requirements of effective radiation of the power module, the capacitor cell assembly, the PCB assembly, the direct current switch, the alternating current switch and the reactor can be met by utilizing the air cooling radiating path. In one embodiment, the heat exchange assembly comprises a liquid cooling heat exchanger and a fan, wherein the liquid cooling heat exchanger is arranged on the air inlet side of the fan, and the fan can exhaust air from the position where the liquid cooling heat exchanger is located; the air outlet side of the fan is arranged facing the power module. It can be understood that the liquid cooling heat exchanger is utilized to provide cooling capacity for heat dissipation to the converter main body and the PCB assembly, so that the converter main body and the PCB assembly can be effectively cooled to meet the use requirement of heat dissipation of the converter. In one embodiment, the converter further comprises a heat dissipation cavity and a heat exchange device, wherein the heat exchange device is arranged in the heat dissipation cavity and is communicated with the liquid cooling heat exchanger and used for dissipating hea