CN209497272U - A kind of electric control box and SVG cellular construction - Google Patents

Abstract

A kind of electric control box and SVG cellular construction, electric control box include the box body of electrical isolation, further include board, one or more of alternating current bus bar component and DC master row component；Board is configured in box body, including one or more of driving plate, monitor board and power panel, contact pin type connection and/or joint type connection between board；Alternating current bus bar component and DC master row component are mounted on box body lower part, and alternating current bus bar and DC master row one end are located in box body, and the other end stretches out outside box body, and extension elongation is greater than length in box；Insulation barrier is equipped between DC master row；SVG cellular construction further includes (PCC) power, and capacitor storehouse component, stack bus bar, ducting assembly and confluence busbar, the device have the adaptability of high altitude localities adverse circumstances, meanwhile, also there is universal adaptability to the environment of other low altitude areas.

Description

A kind of electric control box and SVG cellular construction

Technical field

The utility model relates to high pressure transmission & distribution electrical domain more particularly to a kind of electric control box for adapting to high altitude environment And SVG cellular construction.

Background technique

SVG is a kind of equipment for reactive compensation, and in recent decades, electric power energy industry at home and abroad has extensively Application.High altitude localities, for example, the ground such as Tibet Qinghai in China be usually richly stored with wind energy, solar energy, water energy, The resources such as heat.In the mistake that these energy are converted into electric energy and are conveyed by electrical power trans mission/distribution system to other areas by power generator Cheng Zhong usually can use SVG.

High altitude localities has due to its unique geography and climate feature, and new application environment is provided for SVG, meanwhile, New challenge is brought for the designer of SVG, is mainly shown as the following aspects:

First: the usual day and night temperature in high altitude localities is big, this there can possibly be formed largely condensation, meanwhile, the ground Area have it is larger there may be big dust storm, dust, salt fog, ice and snow, this just puts forward new requirements our degree of protection, such as While where taking into account heat dissipation, its degree of protection grade is improved, is the new challenge that designer faces；

Second: high altitude localities rarefaction of air, the insulation performance in air can reduce, usually between increasing electrical body or Gap between person's electrical body and casing guarantees insulation performance；But from the manufacturing cost of industrial products and transportation cost, It transports convenience etc. to consider, it is desirable that we improve power density, improve space utilization rate, and how the two is taken into account, and be to set A major challenge that meter person faces.

Third: high altitude localities is scarcely populated, and oxygen is thin, meanwhile, the field of employment of SVG is probably far from cities and towns And the place in village, the maintenance that this results in this area SVG are extremely difficult.The SVG of current each producer generally has more line Beam, more plug connector.Its quantity increases, and will increase potential fault point, reduces the reliability of equipment.How section is passed through Reasonable conceptual design is learned, the quantity of connector is reduced, accomplishes few harness even without harness, to improve the long-term running of equipment Reliability is a major challenge again that design all suffers from.

Utility model content

The technical problem to be solved by the utility model is to provide a kind of electric control box and SVG cellular constructions, can The particular surroundings of High aititude is adapted to, longtime running is reliable and stable.

The utility model is achieved through the following technical solutions:

A kind of electric control box, it is characterised in that:

Box body including electrical isolation further includes board, one of alternating current bus bar component and DC master row component or more Kind；

Board is configured in box body, including one or more of driving plate, monitor board and power panel, contact pin between board Formula connection and/or joint type connection；

Alternating current bus bar component and DC master row component are mounted on box body lower part, and alternating current bus bar and DC master row one end are located at box In vivo, the other end stretches out outside box body, and extension elongation is greater than length in box；Insulation barrier is equipped between DC master row.

By device sealings such as the highest electrification boards of most sensitive and failure rate in the electric control box of insulation, outside box body Shell plays the effects of waterproof and dustproof, insulated enclosure, so that the degree of protection of product is improved, to adapt to high altitude localities more Severe natural environment；Contact pin type and/or joint type connection are electrically connected as between plate, to reduce the use of connection wiring harness, to protect Demonstrate,prove the long-term running reliability of equipment；Compact-sized in box, for each board laminated configuration in box body, space utilization rate is high, thus It ensure that the higher power density of final products.

Further, all boards and busbar can be separately mounted in the independent multiple electric control box of multilayer, It may be mounted in a monoblock type electric control box, a kind of preferred monoblock type electric control box and inner mounting structure are: The box body includes top cover, center, middle partition and the cassette bottom stacked on top of one another for configuring, being fixed as one；The dismountable installation of top cover On center, center is dismountable to be mounted in cassette bottom, in the middle dismountable mounting box bottom top opening of partition；Power panel is removable Dress formula is mounted on center, and driving plate is dismountable to be mounted on middle partition；Monitor board contact pin type is connected in driving plate, monitoring Joint type connects between plate and power panel；Alternating current bus bar component and DC master row component are mounted on cassette bottom two sides.By in box Each board and busbar are successively fixed in box body by center, middle partition, not only convenient for the dismounting maintenance of board, busbar, but also benefit Electrical connection between board, moreover it is possible to enough heat dissipations and installation space are reserved between board, busbar.

Further, to avoid the mating surface between each layer structure of box body such as steam from penetrating into tray interior, the exchange Mating surface between busbar component and DC master row component and cassette bottom, between top cover and center, between center and cassette bottom is equipped with Sealed groove, filling with sealant in sealed groove.Sealed groove can be used with individual pen, can also be used cooperatively with multi-turn, and fan is formed The sealing structure of palace formula.

Further, sealing flange is also set in the mating surface, raised sealing flange is located at another match in a mating surface In the sealed groove being recessed on conjunction face, the sealing ditch of " u "-shaped is formed.Sealing ditch can be used with individual pen, and can also be cooperated with multi-turn makes With forming mazy sealing structure.

Further, the dismountable installation includes that bolt, buckle or elastic slice are positioned and passed through by positioning column It is fixed etc. the dismountable installation of other likes.It is positioned, is can be realized between each board and each layer of box body by positioning column It is quickly accurately positioned, avoids because alignment problem damages component, bolt, buckle, elastic slice or other similar mounting structure energy It is enough will very easily assembly is fixed as one between board and each layer of box body, and dismantle when needed it is also very convenient.

Further, the top cover is equipped with waterproof vent valve, while anti-condensation, in turn ensures outer gas in control box It presses identical；Optical fiber wire bushing, such as elastic rubber set, silica gel sheath are arranged on the fiber entrance of center, in the same of protection optical fiber When be also avoided that steam enters in box body from aperture.

A kind of SVG cellular construction, it is characterised in that: including as above any electric control box.

Further, the SVG cellular construction further includes (PCC) power；(PCC) power includes stacked on top of one another is fixed as one IGBT and radiator, gate pole plate is weldingly fixed on the pin at the top of IGBT, substrate and the radiating fin one of radiator at Type, radiating fin are located at base plate bottom；Box body bottom is equipped with the opening being covered on the outside of gate pole plate and IGBT, driving plate and gate pole Contact pin type connects between plate；Alternating current bus bar and DC master row are located at that the intracorporal one end of box is dismountable to be fixed on IGBT output cathode On IGBT output negative pole；Mating surface between box body and radiator is equipped with sealed groove, filling with sealant in sealed groove. Gate pole plate and IGBT are wrapped in inside by box body bottom, and protective action is played to it, and the opening of box body bottom passes through convenient for contact pin And the connection between copper bar and IGBT, also be conducive to part gate pole plate and IGBT on heat radiate upwards, sealed groove and its Mating surface between box body and radiator is fully sealed interior sealant, prevents steam etc. from penetrating into.

Further, the box body bottom of the electric control box is insulated heat plastic box body, to reach mesh resistant to high temperature , simultaneously because the thermal coefficient of material is low, heat can be reduced to the greatest extent and be transmitted in control box box body from (PCC) power；In cassette bottom Other box body components of side are insulating and heat-conducting plastics box body, while being provided with several holes in middle partition and center top surface, so that The heat of box body lower part can be conducted upwards by hole, and heat exchange occurs by heat-conducting plastic shell and air；The electricity Gas control box box body bottom is equipped with the protrusion of indent and (PCC) power top is separated, to reduce connecing for box body and (PCC) power Touching, will be in the heat transfer of (PCC) power to control box to reduce as far as possible.

Further, the SVG cellular construction further includes capacitor storehouse component, stack bus bar, ducting assembly and confluence busbar； Capacitor storehouse component, stack bus bar and electric control box are arranged in juxtaposition；Ducting assembly is configured at radiator both ends；Alternating current bus bar and straight Stream busbar is electrically connected with respective confluence busbar contact respectively.Compact layout and structure, the power for further ensuring product are close Degree, improves space utilization rate.

The utility model has the beneficial effects that:

1, the device sealings such as the highest electrification board of most sensitive and failure rate are passed through in the electric control box of insulation Certain structure design reaches the degree of protection of IP65, while being mounted with the breather valve of waterproof and breathable, anti-condensation same When, in turn ensure that control box inner and outer air pressure is identical；

2, the thermal conductivity of electric control box box body different parts differs greatly, and is designed by hollow structure, forms bottom Portion is heat-insulated, box body outside conduction heat transfer channel from bottom to top, and box body is enable to take into account heat dissipation, heat-insulated function；

3, all with insulation barrier structure inside and outside electric control box box body, between the copper bar for reinforcing DC master row component Insulation, under the premise of not increasing busbar spacing, adapt to rarefaction of air place insulation requirements；

4, the connection between plate is connected using contact pin type and/or joint type, is substantially reduced the usage quantity of harness, is improved Equipment dependability, meanwhile, and a possibility that provided for mass automated production；

It is improved by structure of the above series of to unit, makes it have the adaptability of high altitude localities adverse circumstances, Meanwhile also there is universal adaptability to the environment of other low altitude areas.

Detailed description of the invention

Fig. 1 is the schematic perspective view of electric control box

Fig. 2, Fig. 3 are respectively that Fig. 1 faces explosive view and exploded perspective figure

Fig. 4, Fig. 5 be respectively cassette bottom face and top view

Fig. 6 is the stereoscopic schematic diagram of DC master row component

Fig. 7 is the mounting structure schematic diagram of DC master row component and cassette bottom

Fig. 8 is the mounting structure schematic diagram of center, middle partition and cassette bottom

Fig. 9 is the fit structure schematic diagram of optical fiber and optical fiber wire bushing

Figure 10 is the mounting structure stereoscopic schematic diagram of each board and (PCC) power inside electric control box

Figure 11 is the left view of Figure 10

Figure 12 is the mounting structure stereoscopic schematic diagram of bottom frame, DC master row component and (PCC) power

Figure 13 is a kind of schematic perspective view of SVG cellular construction

In Fig. 1~13: 1 is capacitor storehouse component, and 2 be stack bus bar, and 3 be electric control box, and 301 be cassette bottom, and 302 be interval Plate, 303 be driving plate, and 304 be monitor board, and 305 be center, and 306 be optical fiber wire bushing, and 307 be power panel, and 308 be top cover, 309 be waterproof vent valve, and 310 be board programming mouth, and 311 be alternating current bus bar component, and 312 be DC master row component, and 3121 be straight Busbar is flowed, 3122 be DC master row seat, and 313 be insulation barrier, and 314 be sealed groove, and 315 be sealing flange, and 316 be protuberance Portion, 317 be positioning column, and 318 be buckle, and 4 be (PCC) power, and 401 be gate pole plate, and 402 be IGBT, and 4021 export just for IGBT Pole, 4022 be IGBT output negative pole, and 403 be radiator, and 5 be ducting assembly, and 6 be confluence busbar.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawing.

Embodiment 1

Electric control box 3 as shown in Figures 1 to 3, including electrical isolation box body and it is configured at the intracorporal board of box, exchange is female Arrange component 311 and DC master row component 312；Box body include configuration stacked on top of one another, the dismountable top cover 308 being fixed as one, Center 305, middle partition 302 and cassette bottom 301；Board includes driving plate 303, monitor board 304 and power panel 307, contact pin between board Formula connection and/or joint type connection.

Specifically, top cover 308 is mounted on center 305 by bolt, and center 305 passes through the positioning column in cassette bottom 301 317 positioning, then be mounted in cassette bottom 301 by bolt, middle partition 302 passes through in 301 top opening of bolt mounting box bottom；Monitoring Plate 304 and power panel 307 are positioned by the positioning column 317 on center 305, then are separately mounted to about 305 center by buckle Two sides；Driving plate 303 is positioned by the positioning column 317 on middle partition 302, then is mounted on middle partition 302 by buckle；Monitoring 304 contact pin type of plate is connected in driving plate 303, and the Plug pin patch bay on monitor board 304 and the contact pin in driving plate 303 correspond； Joint type connects between monitor board 304 and power panel 307.

Alternating current bus bar component 311 and DC master row component 312 are mounted on 301 two sides of cassette bottom, and DC master row component 312 includes The DC master row seat 3122 of insulation and conductive DC master row 3121, alternating current bus bar component 311 include the alternating current bus bar seat of insulation And alternating current bus bar.Alternating current bus bar and 3121 one end of DC master row are located in box body, and the other end stretches out outside box body, and extension elongation is greater than Length in box；Insulation barrier 313 is equipped between DC master row 3121；As shown in Figure 5, Figure 7, it is located at the intracorporal insulation barrier of box 313 are integrally formed with cassette bottom 301, are located at the intracorporal insulation barrier 313 of box and are integrally formed with DC master row seat 3122.

Many ventilative cavities are provided on center 305, middle partition 302 is in grid framework shape, outside from bottom to top to be formed Heat dissipation channel.

To prevent extraneous steam from entering in box body, top cover 308 is equipped with waterproof vent valve 309；The fiber entrance of center 305 On be arranged optical fiber wire bushing 306, optical fiber wire bushing 306 and the incoming fiber optic fit structure of monitor board 304 are as shown in Figure 9.Exchange Mating surface between busbar component 311 and cassette bottom 301, between DC master row component 312 and cassette bottom 301 is equipped with sealed groove 314, filling with sealant in sealed groove 314, such sealing structure is as shown in Figure 7.Between top cover 308 and center 305, center Also set sealing flange 315 in mating surface between 305 and cassette bottom 301, raised sealing flange 315 is located at another in a mating surface In the sealed groove 314 being recessed in mating surface, the sealing ditch of " u "-shaped is formed, such sealing structure is as shown in Figure 8.

Embodiment 2

The SVG cellular construction as shown in Figure 10~12 further includes (PCC) power 4；(PCC) power 4 includes fixation stacked on top of one another The IGBT402 and radiator 403 being integrated, gate pole plate 401 are weldingly fixed on the pin at the top of IGBT402, radiator 403 Substrate and radiating fin are integrally formed, and radiating fin is located at base plate bottom.

Cassette bottom 301 is positioned by positioning column 317 and radiator 403, is bolted on the substrate of radiator 403； Cassette bottom 301 is equipped with the opening being covered on the outside of gate pole plate 401 and IGBT402, contact pin type between driving plate 303 and gate pole plate 401 It connects, the contact pin on Plug pin patch bay and gate pole plate 401 in driving plate 303 corresponds；Alternating current bus bar and DC master row 3121 It is fixed on IGBT output cathode 4021 and IGBT output negative pole 4022 in the intracorporal one end of box is dismountable, it is intracorporal to be located at box Insulation barrier 313 simultaneously plays the IGBT output cathode 4021 and IGBT output negative pole 4022 of DC master row 3121 and its connection The effect for reinforcing insulation, as shown in Fig. 7, Figure 12；Mating surface between box body and radiator 403 is equipped with sealed groove 314, close Seal filling with sealant in groove 314.

The positioning column 317 of middle 302 bottom of partition passes through cassette bottom 301 and is open, in the aperture on insertion gate pole plate 401, is used for The positioning of middle partition 302.

Cassette bottom 301 is insulated heat plastic box body, and top cover 308, center 305, middle partition 302 are insulating and heat-conducting plastics box Body；As shown in Figure 4, Figure 5, electric control box box body bottom is equipped at the top of the protrusion 316 and (PCC) power 4 of indent and is separated.

Embodiment 3

SVG cellular construction as shown in fig. 13 that further includes that capacitor storehouse component 1, stack bus bar 2, ducting assembly 5 and confluence are female Row 6；Capacitor storehouse component 1, stack bus bar 2 and electric control box 3 are arranged in juxtaposition；Ducting assembly 5 is configured at 403 both ends of radiator； Alternating current bus bar and DC master row 3121 are electrically connected with respective 5 contact of confluence busbar respectively.

The sensing elements such as board used in traditional SVG are sealed in box by electric control box scheme as shown in Figures 1 to 3 In vivo, meanwhile, which is made of plastic material.Since plastics have insulating properties, which solves lead under the conditions of rarefied air Electric body (such as alternating current bus bar component 311, DC master row component 312 and driving plate 303, monitor board 304 and power panel 307) and electricity The problem of gas control box shell clearance for insulation and creepage distance deficiency.

Electric control box as shown in Figure 2 includes following a few parts: cassette bottom 301, middle partition 302, driving plate 303, monitoring Plate 304, center 305, optical fiber wire bushing 306, power panel 307, top cover 308, waterproof vent valve 309, board programming mouth 310 are handed over Flow busbar component 311, DC master row component 312.

Cassette bottom 301 is in hollow frame shape in lowest part, and bottom corresponds to gate pole plate 401 and IGBT402 is equipped with opening, opening Between be protrusion 316；Cassette bottom 301 is positioned by the positioning column 317 and (PCC) power 4 of its underpart, passes through bolt and radiator 4 Substrate install fix；Driving plate 303 is positioned by the positioning column 317 on middle partition 302, is then fixed on by buckle 318 On middle partition 302；Middle partition 302 is positioned by the positioning column 317 and gate pole plate 401 of its bottom, and then middle partition 302 passes through spiral shell Bolt is fixed in cassette bottom 301；The contact pin on Plug pin patch bay and IGBT gate pole plate 401 in driving plate 303 corresponds；Monitor board 304 and power panel 307 positioned by the positioning column 317 on center 305, it is then fixed by the buckle 318 on center 305；In Frame 305 is positioned by the positioning column 317 and cassette bottom 301 on 301 top of cassette bottom, on monitor board 304 on Plug pin patch bay and driving plate 303 Contact pin corresponds, and then center 305 is connected by bolt with cassette bottom 301；Last top cover 308 passes through bolt and center 305 are connected, and electrical control box main body is completed.

In the present embodiment, in order to reach the degree of protection of IP65, while heat dissipation design is taken into account again, electric control box 3 is made Following special designing:

First, using grooved seal structure, and sealing is encrypted in slot, to achieve the purpose that water proof and dust proof.Cassette bottom 301 with Between (PCC) power 4, DC master row seat 3122 and cassette bottom 301, alternating current bus bar seat and cassette bottom 301, carried out using mode one in Fig. 7 Sealing, i.e., corresponding side mating surface are equipped with sealed groove 314, filling with sealant in sealed groove 314；Cassette bottom 301 is in Between frame 305, center 305 and top cover 308, is sealed using two row of mode in Fig. 8, i.e., be respectively equipped with sealed groove in mating surface 314 and sealing flange 315, raised sealing flange 315 is located at the sealed groove 314 being recessed in another mating surface in a mating surface It is interior, the sealing ditch of " u "-shaped is formed, filling with sealant in ditch is sealed.

Second, connection uses contact pin structure or joint structure between board, so that power panel is removed inside electric control box Outside 307 two groups of inlet wires, without other harness, the quantity of components is greatly reduced, reduces incipient fault rate.

Third, by IGBT, this body structure is limited, and the distance between direct current outlet row is relatively close, for its strong insulation performance, It controls and is all provided with insulation barrier 313 inside and outside box cassette bottom 301 (see Fig. 7, Figure 12).

4th, for electric control box, the substrate temperature and IGBT402 and 401 temperature of gate pole plate of radiator 4 are most To approach a heat source at last, radiates in order to balance, protuberance processing, the base of protrusion 316 and radiator 4 have been done to cassette bottom 301 Plate is detached from, and is contacted with reducing with the substrate of radiator 4, to reduced as far as possible by the heat transfer of (PCC) power 4 to control box Interior (Fig. 4,5,12)；Simultaneously as SVG is in the process of running, the copper bar temperature of alternating current bus bar and DC master row 3121 is higher, because Cassette bottom 301 is designed to that a strip, narrower width reduce the size of control box inner copper line to the greatest extent, so that copper bar to the greatest extent may be used by this Can it is exposed outside cassette bottom 301.

5th, in the selection of electric control box, what cassette bottom 301 was selected is insulated heat plastics, such as ABS+PC, to reach Purpose resistant to high temperature can reduce heat to the greatest extent from (PCC) power 4 and be transmitted to control box box simultaneously because the thermal coefficient of material is low In vivo；The other components of electric control box (top cover 308, center 305 and middle partition 302) use insulation edge heat-conducting plastic, while Middle partition 302 and 305 top surface of center increase many holes, so that (alternating current bus bar component 311 and direct current are female for the heat of box body lower part The partial heat on heat and (PCC) power 4 on row's component 312) it can be conducted upwards by hole, and pass through thermally conductive modeling Expect that heat exchange occurs for shell and air.

6th, in order to achieve the purpose that waterproof and breathable, electric control box inner and outer air pressure is made to keep the same, added on control box Waterproof vent valve 309 is filled, external steam cannot be introduced into avoid generation condensation in electric control box, but air can flow It is dynamic, meanwhile, at positions such as fiber outlets, there is corresponding rubber optical fiber wire bushing 306 to be protected, while protecting optical fiber Also it is avoided that steam enters in box body from aperture.

To sum up, by the optimization design to electric control box and SVG cellular construction, the program is had the following characteristics that

(1) have and adapt to that high altitude localities dust storm is big, day and night temperature is big, the condensation particular surroundings such as again；

(2) insulating requirements of rarefaction of air environment are adapted to；

(3) there is higher reliability, reduce failure rate and frequency of maintenance to greatest extent.

Claims (10)

1. a kind of electric control box, it is characterised in that:

The electric control box (3) includes the box body of electrical isolation, further includes board, alternating current bus bar component (311) and DC master row One or more of component (312)；

Board is configured in box body, including one of driving plate (303), monitor board (304) and power panel (307) or more Kind, contact pin type connection and/or joint type connection between board；

Alternating current bus bar component (311) and DC master row component (312) are mounted on box body, alternating current bus bar and DC master row (3121) One end is located in box body, and the other end stretches out outside box body, and extension elongation is greater than length in box；It is equipped between DC master row (3121) exhausted Edge baffle (313).

2. electric control box according to claim 1, it is characterised in that:

The box body includes top cover (308), center (305), middle partition (302) and the box stacked on top of one another for configuring, being fixed as one Bottom (301)；

Top cover (308) is dismountable to be mounted on center (305), and center (305) is dismountable to be mounted on cassette bottom (301), in In dismountable mounting box bottom (301) top opening of partition (302)；

Power panel (307) is dismountable to be mounted on center (305), and driving plate (303) is dismountable to be mounted on middle partition (302) On；

Monitor board (304) contact pin type is connected on driving plate (303), and joint type connects between monitor board (304) and power panel (307) It connects；

Alternating current bus bar component (311) and DC master row component (312) are mounted on cassette bottom (301) two sides.

3. electric control box according to claim 2, it is characterised in that: the alternating current bus bar component (311) and direct current are female It arranges between component (312) and cassette bottom (301), between top cover (308) and center (305), between center (305) and cassette bottom (301) Mating surface be equipped with sealed groove (314), sealed groove (314) interior filling with sealant.

4. electric control box according to claim 3, it is characterised in that: sealing flange (315) are also set in the mating surface, Raised sealing flange (315) is located in the sealed groove (314) being recessed in another mating surface in one mating surface, forms " u "-shaped Sealing ditch.

5. electric control box according to claim 2, it is characterised in that: the dismountable installation includes passing through positioning column (317) it positions and is fixed by bolt, buckle (318) or the dismountable installation of elastic slice.

6. electric control box according to claim 2, it is characterised in that: the top cover (308) is equipped with waterproof vent valve (309)；Optical fiber wire bushing (306) are arranged on the fiber entrance of center (305).

7. a kind of SVG cellular construction, it is characterised in that: including the electric control box as described in the claims 1~6 are any (3)。

8. SVG cellular construction according to claim 7, it is characterised in that: the SVG cellular construction further includes (PCC) power (4)；

(PCC) power (4) includes the IGBT (402) and radiator (403) stacked on top of one another being fixed as one, gate pole plate (401) welding It is fixed on the pin at the top of IGBT (402), the substrate and radiating fin of radiator (403) are integrally formed, and radiating fin is located at Base plate bottom；

Box body bottom is equipped with the opening being covered on the outside of gate pole plate (401) and IGBT (402), driving plate (303) and gate pole plate (401) contact pin type connects between；

Alternating current bus bar and DC master row (3121) are located at that the intracorporal one end of box is dismountable to be fixed on IGBT output cathode (4021) On IGBT output negative pole (4022)；

Mating surface between box body and radiator (403) is equipped with sealed groove (314), filling sealing in sealed groove (314) Glue.

9. SVG cellular construction according to claim 8, it is characterised in that: the box body bottom of the electric control box (3) is Insulated heat plastic box body, top are insulating and heat-conducting plastics box body；The box body bottom of the electric control box (3) is equipped with indent It is separated at the top of protrusion (316) and (PCC) power (4).

10. SVG cellular construction according to claim 8, it is characterised in that: the SVG cellular construction further includes capacitor storehouse Component (1), stack bus bar (2), ducting assembly (5) and confluence busbar (6)；

Capacitor storehouse component (1), stack bus bar (2) and electric control box (3) are arranged in juxtaposition；

Ducting assembly (5) is configured at radiator (403) both ends；

Alternating current bus bar and DC master row (3121) are electrically connected with respective confluence busbar (6) contact respectively.