CN216872556U

CN216872556U - Megawatt-level high-power energy storage converter cabinet

Info

Publication number: CN216872556U
Application number: CN202220384003.XU
Authority: CN
Inventors: 刘耘甫; 杨四海; 张洪涛; 董振录; 庞羽
Original assignee: BEIJING IN-POWER ELECTRIC CO LTD
Current assignee: BEIJING IN-POWER ELECTRIC CO LTD
Priority date: 2022-02-23
Filing date: 2022-02-23
Publication date: 2022-07-01
Anticipated expiration: 2032-02-23

Abstract

The utility model provides a megawatt high-power energy storage converter cabinet, which belongs to the technical field of converter equipment and comprises a direct current cabinet body, a direct current control assembly, a reactor assembly, a capacitor assembly, a power assembly and a fan, wherein cabinet doors are arranged on the front side and the rear side of the direct current cabinet body, air inlets are formed in the cabinet doors, and the interior of the direct current cabinet body is divided into an upper layer and a lower layer; the reactor assembly is placed on the rear side of the lower layer of the direct current cabinet body, and the direct current control assembly is placed on the front side of the lower layer of the direct current cabinet body; the capacitor assembly is placed on the rear side of the upper layer of the direct current cabinet body, the power assembly is placed on the front side of the upper layer of the direct current cabinet body, the power assembly comprises a radiator, and radiating holes of the radiator are arranged in the vertical direction; the fan is installed at the top of the direct current cabinet body. According to the megawatt high-power energy storage converter cabinet, each functional area is divided into detailed areas according to the circuit connection relation among all the components, and the heat dissipation efficiency of the reactor assembly and the direct current control assembly is improved.

Description

Megawatt-level high-power energy storage converter cabinet

Technical Field

The utility model belongs to the technical field of converter equipment, and particularly relates to a megawatt high-power energy storage converter cabinet.

Background

With the revolution of renewable energy sources replacing fossil energy, the promotion of energy internet and the development of high-power loads of electric vehicles and the like, the intelligent power grid system deserves deep thinking in aspects of stability, safety and the like of a power grid, and has great challenges of intelligent control and optimization coordination on the power generation, transmission and utilization sides; the energy storage technology has potential advantages for flexible adjustment of a power system, and has great popularization and application in multiple fields of frequency modulation, peak regulation, demand response, a microgrid, multi-energy complementation and the like, along with the technical development and price reduction of energy storage devices, the commercial application of taking a battery, a super capacitor assembly and a fuel cell as the energy storage devices inevitably becomes a trend, and an energy storage converter (PCS) is a core part for realizing energy bidirectional flow in the energy storage application, so the demand of the energy storage converter (PCS) is increased year by year.

The common layout form of the high-power converter in the current market does not clearly divide each functional area, so the overall layout is loose, the space utilization rate is low, and the heat dissipation effect is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a megawatt high-power energy storage converter cabinet, and aims to solve the problems of unreasonable layout, low space utilization rate and poor heat dissipation effect of the conventional high-power converter.

In order to realize the purpose, the utility model adopts the technical scheme that: the utility model provides a megawatt level high-power energy storage converter cabinet, includes: the direct current cabinet comprises a direct current cabinet body, a direct current control assembly, a reactor assembly, a capacitor assembly, a power assembly and a fan, and is characterized in that cabinet doors are arranged on the front side and the rear side of the direct current cabinet body, air inlets are formed in the cabinet doors, and the interior of the direct current cabinet body is divided into an upper layer and a lower layer; the reactor assembly is placed on the rear side of the lower layer of the direct current cabinet body, and the direct current control assembly is placed on the front side of the lower layer of the direct current cabinet body; the capacitor assembly is placed on the rear side of the upper layer of the direct current cabinet body, the power assembly is placed on the front side of the upper layer of the direct current cabinet body, the power assembly comprises a radiator, and radiating holes of the radiator are arranged in the vertical direction; the fan is installed at the top of the direct current cabinet body.

In one possible implementation, the capacitor assembly includes a first laminated busbar and a plurality of capacitor bodies; the first laminated busbar is arranged in the vertical direction, and the capacitor body is fixedly mounted on the side wall of the first laminated busbar in the horizontal direction.

In a possible implementation manner, the first laminated busbar divides the upper layer of the dc cabinet into two mutually independent spaces.

In a possible implementation manner, the capacitor assembly further includes a supporting plate, the supporting plate is arranged in parallel with the first laminated busbar, and a plurality of mounting holes matched with the capacitor body are formed in the supporting plate.

In one possible implementation manner, the number of the power assemblies is multiple, and the power assemblies are uniformly arranged along the horizontal direction; and a heat dissipation gap is reserved between every two adjacent power assemblies.

In one possible implementation manner, the power assembly includes a second laminated busbar and a power unit; the second laminated busbar is used for connecting the power unit and the first laminated busbar and is positioned on one side of the first laminated busbar, which is deviated from the capacitor body.

In a possible implementation manner, a supporting seat is installed at the bottom of the power unit, and the supporting seat is fixedly connected with the direct current cabinet body.

In a possible implementation manner, the second laminated busbar includes a first connecting plate and a second connecting plate, and the first connecting plate and the second connecting plate are arranged in an L shape; the first connecting plate is attached to the side wall of the first laminated busbar, and the second connecting plate is attached to the side wall of the power unit.

In one possible implementation, a dimension of the first connecting plate in the vertical direction is smaller than a dimension of the second connecting plate in the vertical direction.

In a possible implementation manner, the number of the fans is two, and the fans are arranged side by side along the length direction of the direct current cabinet body.

Compared with the prior art, according to the scheme shown in the embodiment of the application, cabinet doors are arranged on the front side and the rear side of a direct current cabinet body, an air inlet is formed in each cabinet door, the interior of the direct current cabinet body is divided into an upper layer and a lower layer, a direct current control assembly and a reactor assembly are respectively arranged in front of and behind the lower layer of the direct current cabinet body, and a power assembly and a capacitor assembly are respectively arranged in front of and behind the upper layer of the direct current cabinet body; according to the megawatt high-power energy storage converter cabinet, detailed region division is performed on each functional region according to the circuit connection relation among all the components, so that the layout of the whole machine is more compact, and the space utilization rate is improved. Through the fan at the top of the direct current cabinet body and the heat dissipation holes in the radiator, external cold air enters the cabinet body through the air inlet in the cabinet door, the heat generated by the reactor assembly and the direct current control assembly upwards passes through the heat dissipation holes in the radiator along with the air flow, and finally the fan is used for pumping out hot air from the cabinet body, so that the heat dissipation efficiency of the reactor assembly and the direct current control assembly is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a megawatt high-power energy storage converter cabinet according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a megawatt high-power energy-storage converter cabinet (with a cabinet door removed) according to an embodiment of the present invention;

fig. 3 is a left side view of a megawatt high-power energy-storage converter cabinet according to an embodiment of the present invention;

fig. 4 is a schematic perspective view of a power module according to an embodiment of the present invention;

FIG. 5 is an enlarged view of a portion of FIG. 4 at A;

FIG. 6 is a front view of a power module provided by an embodiment of the present invention;

fig. 7 is a perspective view of a second laminated busbar according to an embodiment of the present invention.

In the figure: 1. a DC cabinet body; 101. a cabinet door; 102. an air inlet; 2. a DC control component; 3. a reactor component; 4. a capacitive component; 401. a first laminated busbar; 402. a capacitor body; 403. a support plate; 5. a power component; 501. a heat sink; 502. heat dissipation holes; 503. a second laminated busbar; 504. a power unit; 505. a supporting seat; 506. a first connecting plate; 507. a second connecting plate; 6. a fan.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Referring to fig. 1 to fig. 5, a megawatt high-power energy storage converter cabinet according to the present invention will be described. The megawatt high-power energy storage converter cabinet comprises: the direct current cabinet comprises a direct current cabinet body 1, a direct current control assembly 2, a reactor assembly 3, a capacitor assembly 4, a power assembly 5 and a fan 6, and is characterized in that cabinet doors 101 are arranged on the front side and the rear side of the direct current cabinet body 1, an air inlet 102 is formed in each cabinet door 101, and the interior of the direct current cabinet body 1 is divided into an upper layer and a lower layer; the reactor component 3 is placed at the rear side of the lower layer of the direct current cabinet body 1, and the direct current control component 2 is placed at the front side of the lower layer of the direct current cabinet body 1; the capacitor assembly 4 is placed on the rear side of the upper layer of the direct current cabinet body 1, the power assembly 5 is placed on the front side of the upper layer of the direct current cabinet body 1, the power assembly 5 comprises a radiator 501, and heat dissipation holes 502 of the radiator 501 are arranged in the vertical direction; the fan 6 is arranged at the top of the direct current cabinet body 1.

Compared with the prior art, the megawatt-level high-power energy-storage converter cabinet provided by the embodiment has the advantages that the cabinet doors 101 are arranged on the front side and the rear side of the direct-current cabinet body 1, the cabinet doors 101 are provided with the air inlets 102, the interior of the direct-current cabinet body 1 is divided into an upper layer and a lower layer, the direct-current control assembly 2 and the reactor assembly 3 are respectively arranged in front of and behind the lower layer of the direct-current cabinet body 1, and the power assembly 5 and the capacitor assembly 4 are respectively arranged in front of and behind the upper layer of the direct-current cabinet body 1; according to the megawatt high-power energy storage converter cabinet, detailed region division is performed on each functional region according to the circuit connection relation among all the components, so that the layout of the whole machine is more compact, and the space utilization rate is improved. Through fan 6 at the top of the direct current cabinet body 1 and the louvre 502 on the radiator 501, outside cold wind enters into the cabinet body via the air intake 102 on the cabinet door 101, and reactor subassembly 3 and direct current control subassembly 2 produce heat and upwards pass through the louvre 502 of radiator 501 along with the air current, utilize fan 6 to take out the hot-air from the cabinet body at last, have promoted the radiating efficiency to reactor subassembly 3 and direct current control subassembly 2.

In some embodiments, referring to fig. 4, the capacitor assembly 4 includes a first laminated bus bar 401 and a plurality of capacitor bodies 402; the first laminated busbar 401 is arranged along the vertical direction, and the capacitor body 402 is fixedly mounted on the side wall of the first laminated busbar 401 along the horizontal direction. In this embodiment, the first laminated busbar 401 is a flat plate and is disposed along the vertical direction. A plurality of capacitor bodies 402 are fixedly mounted on the side wall of the first laminated busbar 401, thereby facilitating assembly of the capacitor assembly 4. The capacitor bodies 402 are vertically aligned with each other to ensure a flow rate of the airflow through the capacitor bodies 402 from bottom to top. The lower end of the first laminated busbar 401 is in plug-in fit with the direct-current cabinet 1, and an enough dismounting space is reserved between the upper end of the first laminated busbar 401 and the direct-current cabinet 1.

In some embodiments, referring to fig. 3 and fig. 4, the first laminated busbar 401 divides the upper layer of the dc cabinet 1 into two mutually independent spaces. In this embodiment, the first laminated busbar 401 separates the capacitor body 402 from other components located on the upper layer of the dc cabinet 1, so as to prevent heat generated by the capacitor body 402 from affecting normal operation of the other components.

In some embodiments, referring to fig. 4, the capacitor assembly 4 further includes a supporting plate 403, the supporting plate 403 is disposed in parallel with the first laminated busbar 401, and the supporting plate 403 is provided with a plurality of mounting holes matching with the capacitor body 402. In this embodiment, the plurality of capacitor bodies 402 are symmetrically arranged on the first laminated busbar 401 in two upper and lower groups, and the capacitor bodies 402 of each group are uniformly arranged on the first laminated busbar 401. One end of the capacitor body 402 is fixedly connected to the first laminated busbar 401, and the other end of the capacitor body 402 is in a suspended state, so that the capacitor body 402 is prone to shake. By connecting a plurality of capacitor elements 4 with the support plate 403, the stability of the capacitor body 402 is improved.

In some embodiments, referring to fig. 4, the number of the power assemblies 5 is plural, and the power assemblies are uniformly arranged along the horizontal direction; a heat dissipation gap is left between two adjacent power assemblies 5. In this embodiment, the capacitor body 402 and the power components 5 are respectively located on two sides of the first laminated busbar 401, and the plurality of power components 5 are uniformly arranged along the horizontal direction, so that the space in the dc cabinet 1 is fully utilized. And a heat dissipation gap is reserved between two adjacent power assemblies 5, so that the heat dissipation effect on the power assemblies 5 can be improved on one hand, and a sufficient installation space can be provided for the matching of the power assemblies 5 on the other hand.

In some embodiments, referring to fig. 4 and fig. 6, the power assembly 5 includes a second laminated bus bar 503 and a power unit 504; the second laminated busbar 503 is used for connecting the power unit 504 and the first laminated busbar 401, and the second laminated busbar 503 is located on one side of the first laminated busbar 401 away from the capacitor body 402. In this embodiment, the second laminated busbar 503 is used for supporting the power unit 504 and keeping a certain distance between the power unit 504 and the first laminated busbar 401. The heat sink 501 is fixedly mounted on the power unit 504, and a lower end of the heat sink 501 contacts the dc cabinet 1, thereby supporting the power unit 504. The power unit 504 is arranged on the second laminated busbar 503 in the vertical direction, so that the internal space of the direct current cabinet 1 is fully utilized, and the power density is improved.

In some embodiments, referring to fig. 6, a support base 505 is installed at the bottom of the power unit 504, and the support base 505 is fixedly connected with the dc cabinet 1. In this embodiment, the supporting base 505 is an insulating member. The support base 505 is connected with the power unit 504 and the dc cabinet 1 through screws. The support base 505 is correspondingly provided with a long hole for mounting a screw, so that the support base 505 is convenient to assemble. The supporting seat 505 can keep the power unit 504 and the dc cabinet 1 relatively stable. The supporting seat 505 and the connection end of the direct current cabinet body 1 are located in the heat dissipation gap between two adjacent power assemblies 5, so that the supporting seat 505 can be conveniently disassembled and assembled.

In some embodiments, referring to fig. 4, fig. 6 and fig. 7, the second laminated busbar 503 includes a first connecting plate 506 and a second connecting plate 507, and the first connecting plate 506 and the second connecting plate 507 are disposed in an L shape; the first connecting plate 506 is attached to the side wall of the first laminated busbar 401, and the second connecting plate 507 is attached to the side wall of the power unit 504. In this embodiment, the first connecting plate 506 and the second connecting plate 507 are integrally formed by a bending process, so that the integrally formed structure has higher strength and is more durable. The first connecting plate 506 is detachably connected to the first laminated busbar 401 by screws, and the second connecting plate 507 is detachably connected to the power unit 504 by screws. The first connecting plate 506 is located in the middle of the first laminated busbar 401, and the installation positions of the capacitor body 402 and the first connecting plate 506 are staggered up and down, so that the first connecting plate 506 and the capacitor body 402 are prevented from being disassembled and assembled.

In some embodiments, referring to fig. 7, the size of the first connecting plate 506 in the vertical direction is smaller than the size of the second connecting plate 507 in the vertical direction. In this embodiment, the second connection plate 507 is matched with the size of the power module 5. Because the size of the first connecting plate 506 along the vertical direction is smaller than that of the second connecting plate 507 along the vertical direction, the contact area between the second laminated busbar 503 and the first laminated busbar 401 is reduced, so that the installation space of the capacitor body 402 on the first laminated busbar 401 is increased, and the number of the capacitor bodies 402 on the first laminated busbar 401 is increased.

In some embodiments, referring to fig. 2, the number of the fans 6 is two, and the fans are arranged side by side along the length direction of the dc cabinet 1. In this embodiment, two fans 6 correspond the setting with capacitor assembly 4 and power component 5 respectively to promote the radiating efficiency of the direct current cabinet body 1.

The above description is intended to be illustrative of the preferred embodiment of the present invention and should not be taken as limiting the utility model, but rather, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.

Claims

1. A megawatt high-power energy storage converter cabinet comprises: the direct current cabinet comprises a direct current cabinet body, a direct current control assembly, a reactor assembly, a capacitor assembly, a power assembly and a fan, and is characterized in that cabinet doors are arranged on the front side and the rear side of the direct current cabinet body, air inlets are formed in the cabinet doors, and the interior of the direct current cabinet body is divided into an upper layer and a lower layer; the reactor assembly is placed on the rear side of the lower layer of the direct current cabinet body, and the direct current control assembly is placed on the front side of the lower layer of the direct current cabinet body; the capacitor assembly is placed on the rear side of the upper layer of the direct current cabinet body, the power assembly is placed on the front side of the upper layer of the direct current cabinet body, the power assembly comprises a radiator, and radiating holes of the radiator are arranged in the vertical direction; the fan is installed at the top of the direct current cabinet body.

2. The megawatt high-power energy-storage converter cabinet according to claim 1, wherein the capacitor assembly comprises a first laminated busbar and a plurality of capacitor bodies; the first laminated busbar is arranged in the vertical direction, and the capacitor body is fixedly mounted on the side wall of the first laminated busbar in the horizontal direction.

3. The megawatt high-power energy-storage converter cabinet according to claim 2, wherein the first laminated busbar divides the upper layer of the dc cabinet into two mutually independent spaces.

4. The megawatt high-power energy-storage converter cabinet according to claim 2, wherein the capacitor assembly further comprises a supporting plate, the supporting plate is arranged in parallel with the first laminated busbar, and a plurality of mounting holes matched with the capacitor body are formed in the supporting plate.

5. The megawatt high-power energy-storage converter cabinet according to claim 1, wherein the number of the power components is multiple and is uniformly arranged along the horizontal direction; and a heat dissipation gap is reserved between every two adjacent power assemblies.

6. The megawatt high-power energy-storage converter cabinet according to claim 2, wherein the power assembly comprises a second laminated busbar and a power unit; the second laminated busbar is used for connecting the power unit and the first laminated busbar and is positioned on one side of the first laminated busbar, which is deviated from the capacitor body.

7. The megawatt high-power energy-storage converter cabinet according to claim 6, wherein a support seat is installed at the bottom of the power unit, and the support seat is fixedly connected with the DC cabinet body.

8. The megawatt high-power energy-storage converter cabinet according to claim 6, wherein the second laminated busbar comprises a first connecting plate and a second connecting plate, and the first connecting plate and the second connecting plate are arranged in an L shape; the first connecting plate is attached to the side wall of the first laminated busbar, and the second connecting plate is attached to the side wall of the power unit.

9. The megawatt high power energy-storage converter cabinet according to claim 8, wherein the dimension of the first connecting plate in the vertical direction is smaller than the dimension of the second connecting plate in the vertical direction.

10. The megawatt high-power energy-storage converter cabinet according to claim 1, wherein the number of the fans is two, and the fans are arranged side by side along the length direction of the direct-current cabinet body.