CN203537216U

CN203537216U - Power module

Info

Publication number: CN203537216U
Application number: CN201320524386.7U
Authority: CN
Inventors: 朱善论; 何露喜
Original assignee: Shenzhen Hopewind Electric Co Ltd
Current assignee: Shenzhen Hopewind Electric Co Ltd
Priority date: 2013-08-27
Filing date: 2013-08-27
Publication date: 2014-04-09
Anticipated expiration: 2023-08-27

Abstract

The utility model discloses a power module, comprising a power unit and a plastic cement protecting shell used for protecting the power unit. The power unit and the plastic cement protecting shell are fixedly connected through a fixed connecting piece. The plastic cement protecting shell is externally equipped with a metal protecting plate. The metal protecting plate can prevent fragments of the plastic cement protecting shell blown-up due to explosion of the power unit from bursting out. When the power unit explodes due to overheating or other reasons, the strength of the metal protecting plate is relatively high so that the metal protecting plate cannot be blown into pieces; and at the same time, the metal protecting plate can prevent the plastic cement shell from being blown into pieces. Even if the plastic cement shell is blown into pieces, the metal protecting plate can effectively prevent the fragments of the blown-up plastic cement protecting shell from bursting out at high speed to damage other adjacent power modules, cables, and the like, thereby preventing the generation of unnecessary loss.

Description

Power model

Technical field

The utility model relates to a kind of power model.

Background technology

Power model (such as igbt transistor, metal-oxide-semiconductor etc.) is a kind of conventional power device on the electric products such as wind energy converter, photovoltaic DC-to-AC converter, frequency converter.Power model, when work, can produce a large amount of heats, in the design of electric product, need to consider fully the heat radiation of power model.Heat dispersion designs bad, the phenomenon that power model is easily blasted.Certainly, the phenomenon that power model also can be blasted because of the impact of other factors.Power model explosion time, the fragment of its blast can splash at a high speed to surrounding, and this fragment can cause fatal harm to the electric components of periphery, cable etc.

In the middle of actual electric product design, in order to reduce the coverage of power model blast, conventionally can be at the peripheral Plastic Banded, Armour Piercing, Discarding Sabot shell of installing of power model.An effect of this Plastic Banded, Armour Piercing, Discarding Sabot shell can be protected splashing of blast fragment, and another effect can prevent dust ingoing power module.

Yet this protecting crust normally by plastic cement make, intensity is limited, at power model instant of detonation Plastic Banded, Armour Piercing, Discarding Sabot shell, is also easy to go up fragmentate, these fragments can cause certain injury equally to the electric components of periphery, cable etc.Existing solution is: thus by adopting new plastic material or new technology to improve the intensity of Plastic Banded, Armour Piercing, Discarding Sabot shell, reduce quantity, the flying speed that slows down after Plastic Banded, Armour Piercing, Discarding Sabot shell demolition, thereby reduce the destruction to other electric components, cable etc.But the Plastic Banded, Armour Piercing, Discarding Sabot shell impact resistance that adopts new material or new technology to make is limited, protection effect is also unreliable, and cost is also higher.

Utility model content

The technical problems to be solved in the utility model is, for the Plastic Banded, Armour Piercing, Discarding Sabot shell of the above-mentioned power model of prior art, easily by the defect of scraping and other parts being damaged, provides a kind of power model with metal protection plate.

The utility model solves the technical scheme that its technical problem adopts: a kind of power model is provided; comprise power cell and for the protection of the Plastic Banded, Armour Piercing, Discarding Sabot shell of power cell; described power cell is fixedly connected with by fixed connecting piece with described Plastic Banded, Armour Piercing, Discarding Sabot shell; the outside metal protection plate of installing of described Plastic Banded, Armour Piercing, Discarding Sabot shell, described metal protection plate can stop that described Plastic Banded, Armour Piercing, Discarding Sabot shell flies out because of the described power cell explosion time fragment producing of going up.

In power model described in the utility model, the thickness of described metal protection plate is less than the thickness of described Plastic Banded, Armour Piercing, Discarding Sabot shell.

In power model described in the utility model, the thickness of described metal protection plate is 0.5 millimeter-3 millimeters.

In power model described in the utility model, described metal protection plate is the tabular of middle part projection.

In power model described in the utility model, described metal protection plate comprises lug boss and divides the first fixed part and the second fixed part that is located at described lug boss both sides, is equipped with the installing hole for fixing described metal protection plate on described the first fixed part and the second fixed part.

In power model described in the utility model, described Plastic Banded, Armour Piercing, Discarding Sabot shell is provided with the through hole corresponding with the installing hole of described metal protection plate, and described metal protection plate and described Plastic Banded, Armour Piercing, Discarding Sabot shell are fixedly installed togather by passing successively the screw of described installing hole and described through hole.

In power model described in the utility model, the end of described the first fixed part extends to form first extension vertical with described the first fixed part to the side away from described lug boss, the end of described the second fixed part extends to form second extension vertical with described the second fixed part to the side away from described lug boss, and described the first extension and the second extension are coated on respectively the two ends of described Plastic Banded, Armour Piercing, Discarding Sabot shell to fix described Plastic Banded, Armour Piercing, Discarding Sabot shell.

In power model described in the utility model, described the second fixed part is provided with ventilating opening, described Plastic Banded, Armour Piercing, Discarding Sabot shell is provided with the ventilation slot corresponding with described ventilating opening, and described ventilating opening is connected with described ventilation slot so that the dissipation of heat that described power cell produces.

In power model described in the utility model, described metal protection plate is made by steel plate or aluminium alloy.

In power model described in the utility model, the top of described power cell or bottom arrange a capacitance module, and described capacitance module is fixedly connected with described fixed connecting piece.

Implement power model of the present utility model, there is following beneficial effect: by a metal protection plate is installed outside Plastic Banded, Armour Piercing, Discarding Sabot shell, when power cell is because the reason such as overheated causes explosion time, because the intensity of metal protection plate is larger, it can not scraped, and metal protection plate can prevent that Plastic Banded, Armour Piercing, Discarding Sabot shell from being scraped simultaneously; Even if Plastic Banded, Armour Piercing, Discarding Sabot shell is scraped, metal protection plate can effectively stop by the outside power model that flies out at a high speed and injure other vicinity of the fragment of the Plastic Banded, Armour Piercing, Discarding Sabot shell after scraping, electric components, cable etc., avoids producing unnecessary extraneoas loss.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:

Fig. 1 is the schematic layout pattern of the power model in the electric equipment that provides of the utility model preferred embodiment;

Fig. 2 is the structural representation of the power model that provides of the utility model preferred embodiment.

Embodiment

For technical characterictic of the present utility model, object and effect being had more clearly, understand, now contrast accompanying drawing and describe embodiment of the present utility model in detail.

As shown in Figure 1, power model 100 is fixedly mounted in the middle of the regulator cubicle 101 of electric product conventionally, and electric product can be wind electric converter, photovoltaic DC-to-AC converter, high voltage converter etc.The periphery of power model 100 also fixedly mounts the (not shown)s such as some other electric components, cable conventionally, in the middle of regulator cubicle 101, conventionally comprises a plurality of power models 100.

As shown in Figure 2, the power model 100 that the utility model preferred embodiment provides comprises fixed connecting piece 10, power cell 20, Plastic Banded, Armour Piercing, Discarding Sabot shell 30, metal protection plate 40 and capacitance module 50.

Wherein, fixed connecting piece 10 is roughly frame shape and has certain heat sinking function, so that different power cells 20 is all fixed on this fixed connecting piece 10, and power cell 20 is also fixedly connected with by fixed connecting piece 10 with Plastic Banded, Armour Piercing, Discarding Sabot shell 30.Capacitance module 50 is arranged on top or the bottom of power cell 20 and is fixedly connected with fixed connecting piece 10.In the present embodiment, power cell 20 can be igbt transistor, metal-oxide-semiconductor.

Be appreciated that, owing to including a plurality of power models 100 in a regulator cubicle, and 100 highly denses of the power model in electric equipment, close arrangement each other makes the gap between each power model 100 less, again because the operating current of power model 100 is generally larger, the heat that power model 100 produces is also very large, so power model 100 exists the possibility of blasting when overheated.Power cell 20 is groundwork devices of power model 100, and the blast of power model 100 also can be caused by the high power work voltage of power cell 20.

Plastic Banded, Armour Piercing, Discarding Sabot shell 30 is the tabular of middle part projection substantially, is arranged on power cell 20, and for the protection of power cell 20.Plastic Banded, Armour Piercing, Discarding Sabot shell 30 is made by plastic material, when power cell 20 is blasted because of overheated or other reason, because the intensity of Plastic Banded, Armour Piercing, Discarding Sabot shell 30 is limited, Plastic Banded, Armour Piercing, Discarding Sabot shell 30 also can be scraped, and the fragment of its generation will produce the movement tendency outwards flying out at a high speed.In the present embodiment, Plastic Banded, Armour Piercing, Discarding Sabot shell 30 is provided with through hole 302 and ventilation slot 304, the dissipation of heat of ventilation slot 304 for power cell 20 is produced; Screw (not shown) can be fixedly installed togather Plastic Banded, Armour Piercing, Discarding Sabot shell 30 and metal protection plate 40 through through hole 302, and the quantity of through hole 302 is three, certainly in other embodiments, the quantity of through hole 302 can, for one, two or more, not limit at this yet.

Metal protection plate 40 is fixedly mounted on Plastic Banded, Armour Piercing, Discarding Sabot shell 30 outsides, and the physical dimension of metal protection plate 40 and Plastic Banded, Armour Piercing, Discarding Sabot shell 30 suitable, be also the tabular of middle part projection; Metal protection plate 40 is outwards flown out at a high speed by the fragment producing after scraping for stopping Plastic Banded, Armour Piercing, Discarding Sabot shell 30, thereby avoids the fragment of Plastic Banded, Armour Piercing, Discarding Sabot shell 30 to damage adjacent power module 100, electric components or cable etc., has reduced unnecessary extraneoas loss.In the present embodiment, metal protection plate 40 is made by steel plate or aluminium alloy, has stronger rigidity, is also difficult for being scraped under the percussion of huge external force.The thickness of metal protection plate 40 is slightly less than the thickness of Plastic Banded, Armour Piercing, Discarding Sabot shell 30, and the thickness of metal protection plate 40 is between 0.5 millimeter-3 millimeters particularly.

Metal protection plate 40 comprises lug boss 401, the first fixed part 402, the second fixed part 403, the first extension 405 and the second extension 406.Wherein, the first fixed part 402 and the second fixed part are located at the both sides of lug boss 401 for 403 minutes, and the first fixed part 402 and the second fixed part 403 are in same level, lug boss 401 equals lug boss 401 with respect to the vertical range of the second fixed part 403 with respect to the vertical range of the first fixed part 402, and lug boss 401 equates with respect to the vertical height of the first fixed part 402 and the second fixed part 403.On the first fixed part 402 and the second fixed part 403, be equipped with the installing hole 404 of fixing this metal protection plate 40, particularly, the first fixed part 402 is provided with spaced two installing holes 404, the second fixed part 403 is provided with an installing hole 404, and these three installing holes 404 are corresponding with the position of through hole 302 on Plastic Banded, Armour Piercing, Discarding Sabot shell 30, thereby screw can be fixedly installed togather metal protection plate 40 and Plastic Banded, Armour Piercing, Discarding Sabot shell 30 through installing hole 404 and through hole 302 successively.Preferably, the second fixed part 403 is provided with ventilating opening 407, ventilating opening 407 is rectangle, and this ventilating opening 47 is corresponding with the position of ventilation slot 304 on Plastic Banded, Armour Piercing, Discarding Sabot shell 30, so that the heat that power cell 20 produces distributes by ventilation slot 304 and the ventilating opening 407 being interconnected successively, thereby reduce the probability of power cell 20 blasts.

The first extension 405 is along the end of the first fixed part 402 to extending away from a side of lug boss 401 and perpendicular with the first fixed part 402, the second extension 406 is along the end of the second fixed part 403 to extending away from a side of lug boss 401 and perpendicular with the second fixed part 403, the first extension 405 and the second extension 406 are parallel to each other, and the first extension 405 and the second extension 406 for the both sides that are coated on respectively Plastic Banded, Armour Piercing, Discarding Sabot shell 30 to fix this Plastic Banded, Armour Piercing, Discarding Sabot shell 30.

Be appreciated that, the planform of metal protection plate 40 of the present utility model is not limited to foregoing description, be that metal protection plate 40 can be done adaptive change according to the structure of Plastic Banded, Armour Piercing, Discarding Sabot shell 30 is different, if make the structure of metal protection plate 40 and Plastic Banded, Armour Piercing, Discarding Sabot shell 30 suitable.So long as in the scheme of the outer increase metal protection of Plastic Banded, Armour Piercing, Discarding Sabot shell 30 plate 40, all belong to protection range of the present utility model.

Power model 100 of the present utility model, by at the outer installation metal protection of Plastic Banded, Armour Piercing, Discarding Sabot shell 30 plate 40, when power cell 20 is because the reason such as overheated causes explosion time, because the intensity of metal protection plate 40 is larger, it can not scraped, and metal protection plate 40 can prevent that Plastic Banded, Armour Piercing, Discarding Sabot shell 30 from being scraped simultaneously; Even if Plastic Banded, Armour Piercing, Discarding Sabot shell 30 is scraped, metal protection plate 40 can effectively stop and by Plastic Banded, Armour Piercing, Discarding Sabot shell 30 fragments after scraping, outwards at a high speed flown out and damage other contiguous power model 100 or cable etc., avoids producing unnecessary extraneoas loss.And metal protection plate 40 of the present utility model is with low cost, easy for installation, and can meet the electrical demands of power model 100.

By reference to the accompanying drawings embodiment of the present utility model is described above; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; rather than restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not departing from the scope situation that the utility model aim and claim protect, also can make a lot of forms, within these all belong to protection of the present utility model.

Claims

1. a power model; comprise power cell (20) and for the protection of the Plastic Banded, Armour Piercing, Discarding Sabot shell (30) of power cell (20); described power cell (20) is fixedly connected with by fixed connecting piece (10) with described Plastic Banded, Armour Piercing, Discarding Sabot shell (30); it is characterized in that; the outside metal protection plate (40) of installing of described Plastic Banded, Armour Piercing, Discarding Sabot shell (30), described metal protection plate (40) can stop that described Plastic Banded, Armour Piercing, Discarding Sabot shell (30) flies out because of described power cell (20) the explosion time fragment producing of going up.

2. power model according to claim 1, is characterized in that, the thickness of described metal protection plate (40) is less than the thickness of described Plastic Banded, Armour Piercing, Discarding Sabot shell (30).

3. power model according to claim 1, is characterized in that, the thickness of described metal protection plate (40) is 0.5 millimeter-3 millimeters.

4. power model according to claim 1, is characterized in that, described metal protection plate (40) is the tabular of middle part projection.

5. power model according to claim 4, it is characterized in that, described metal protection plate (40) comprises lug boss (401) and divides the first fixed part (402) and the second fixed part (403) that is located at described lug boss (401) both sides, is equipped with the installing hole (404) for fixing described metal protection plate (40) on described the first fixed part (402) and the second fixed part (403).

6. power model according to claim 5, it is characterized in that, described Plastic Banded, Armour Piercing, Discarding Sabot shell (30) is provided with the through hole (302) corresponding with the installing hole (404) of described metal protection plate (40), and described metal protection plate (40) is fixedly installed togather by passing successively the screw of described installing hole (404) and described through hole (302) with described Plastic Banded, Armour Piercing, Discarding Sabot shell (30).

7. power model according to claim 6, it is characterized in that, the end of described the first fixed part (402) extends to form first extension (405) vertical with described the first fixed part (402) to the side away from described lug boss (401), the end of described the second fixed part (403) extends to form second extension (406) vertical with described the second fixed part (403) to the side away from described lug boss (401), described the first extension (405) and the second extension (406) are coated on respectively the two ends of described Plastic Banded, Armour Piercing, Discarding Sabot shell (30) to fix described Plastic Banded, Armour Piercing, Discarding Sabot shell (30).

8. power model according to claim 5, it is characterized in that, described the second fixed part (403) is provided with ventilating opening (407), described Plastic Banded, Armour Piercing, Discarding Sabot shell (30) is provided with the ventilation slot (304) corresponding with described ventilating opening (407), and described ventilating opening (407) is connected with described ventilation slot (304) so that the dissipation of heat that described power cell (20) produces.

9. power model according to claim 1, is characterized in that, described metal protection plate (40) is made by steel plate or aluminium alloy.

10. power model according to claim 1, is characterized in that, the top of described power cell (20) or bottom arrange a capacitance module (50), and described capacitance module (50) is fixedly connected with described fixed connecting piece (10).