CN212010738U

CN212010738U - IGBT absorption capacitor

Info

Publication number: CN212010738U
Application number: CN202020598178.1U
Authority: CN
Inventors: 朱未; 陈建立; 蔡玲儿; 薛吉; 汪新建
Original assignee: Zhejiang Hongfa Wufeng Capacitor Co ltd
Current assignee: Zhejiang Hongfa Wufeng Capacitor Co ltd
Priority date: 2020-04-20
Filing date: 2020-04-20
Publication date: 2020-11-24
Anticipated expiration: 2030-04-20

Abstract

The utility model discloses an IGBT absorption capacitor, including shell, electric capacity core, two extraction electrode slices include outer fishplate bar, stretch into board and inner connecting plate respectively, outer fishplate bar links to each other with stretching into the board top, the inner connecting plate of one of them extraction electrode slice is established at stretching into the board left surface, the inner connecting plate of another extraction electrode slice is established at stretching into the board right surface, the inner connecting plate of two extraction electrode slices is connected with electric capacity core electricity respectively, electric capacity core and stretch into board, inner connecting plate are located the shell; the extending plate is provided with a limiting groove, the inner side surface of the shell is provided with a plurality of limiting convex parts which are in one-to-one correspondence with the limiting grooves on the two leading-out electrode plates, and the limiting convex parts are respectively in one-to-one insertion fit with the corresponding limiting grooves. The utility model discloses make the position relatively fixed of drawing electrode slice on the shell, skew about can not taking place.

Description

IGBT absorption capacitor

Technical Field

The utility model relates to a condenser field especially relates to a IGBT absorption capacitor ware.

Background

The IGBT absorption capacitor generally includes a case, a capacitor core, and two lead-out electrode plates, each of which includes an outer connection plate, an insertion plate, and an inner connection plate, the outer connection plate is connected to the top end of the insertion plate, and the inner connection plate is disposed on the left side surface or the right side surface of the insertion plate. At present, the leading-out electrode plate of the IGBT absorption capacitor is clamped at the outer side of the top end of the shell only through two limiting plates arranged on the outer connecting plate of the IGBT absorption capacitor, so that the leading-out electrode plate is easy to shift left and right, the position of the leading-out electrode plate on the shell cannot be accurately limited, the position of the leading-out electrode plate on the shell is unstable, and once the position of the leading-out electrode plate on the shell has large deviation, the outer connecting plate of the leading-out electrode plate and the connecting position of an external device are not accurate enough.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the technical problem that prior art exists, provide one kind and can be to drawing the effective spacing IGBT absorption capacitor of electrode slice.

The utility model provides a technical scheme that its technical problem adopted is: an IGBT absorption capacitor comprises a shell, a capacitor core and two lead-out electrode plates, wherein the two lead-out electrode plates respectively comprise an outer connecting plate, a stretching-in plate and an inner connecting plate; the extending plate is provided with a limiting groove, the inner side surface of the shell is provided with a plurality of limiting convex parts which are in one-to-one correspondence with the limiting grooves on the two leading-out electrode plates, and the limiting convex parts are respectively in one-to-one insertion fit with the corresponding limiting grooves.

Furthermore, the limiting groove and the limiting convex part are respectively in a long strip shape and are positioned in the vertical direction.

Furthermore, the bottom end of the limiting groove is open, and the limiting groove penetrates through the front side face and the rear side face of the extending plate.

Furthermore, the limiting convex part is a first L-shaped part, the tail end of one side of the first L-shaped part is integrally connected with the inner side surface of the shell, and one side of the first L-shaped part is in inserted fit with the limiting groove; the other side of the first L-shaped part is matched with the front side of the extending plate.

Furthermore, two second L-shaped pieces are arranged on the inner side surface of the shell, are both in a strip shape and are positioned in the vertical direction; the two second L-shaped pieces correspond to the two leading-out electrode plates one by one, the tail ends of one side of each second L-shaped piece are integrally connected with the inner side face of the shell, one side of each second L-shaped piece is matched with the left side or the right side of the corresponding extending-in plate, and the other side of each second L-shaped piece is matched with the front side of the corresponding extending-in plate.

Furthermore, the extending plate is provided with one limiting groove respectively, the number of the first L-shaped pieces is two, and the two second L-shaped pieces are positioned between the two first L-shaped pieces.

Further, the thickness of the inner connecting plate is smaller than that of the extending plate.

Further, the inner connecting plate is perpendicular to the extending plate and extends towards the front side of the extending plate; the number of the inner connecting plates is at least two, and the at least two inner connecting plates are distributed at intervals up and down.

Furthermore, a downward limiting plate is arranged on the left side and/or the right side of the outer connecting plate, and the limiting plate is clamped on the outer side of the top end of the shell.

Further, outer fishplate bar is the L font, just the vertical part of outer fishplate bar is equipped with the mounting hole, the tail end of the horizontal part of outer fishplate bar with stretch into the top of board an organic whole and link to each other, the left and right sides of the horizontal part of outer fishplate bar is equipped with respectively the limiting plate.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses utilize the spacing groove of limiting plate and the cooperation of pegging graft of spacing convex part of shell medial surface, carry on spacingly to drawing electrode slice, make the position relatively fixed of drawing electrode slice on the shell, skew about can not taking place to ensure that the outer fishplate bar of drawing electrode slice is comparatively accurate with external device hookup location, also make IGBT absorption capacitor's production technology more simple, can save the process that corrects the electrode slice position of drawing

2. The limiting groove is in a long strip shape and is positioned in the vertical direction, so that the verticality of the lead-out electrode plate can be ensured.

3. The limiting convex part is the first L-shaped part, the other side of the first L-shaped part is matched with the front side of the stretching plate to limit the stretching plate, so that the stretching plate is attached to the inner side surface of the shell, the problems that the gap between the stretching plate and the inner side surface of the shell is large and the outer connecting plate is warped due to the fact that the capacitor core forms a 'head-light-foot-heavy' state, and meanwhile, follow-up procedures are simpler and work efficiency is high are solved.

4. The second L-shaped piece is further arranged on the inner side face of the shell and can be matched with the first L-shaped piece to further limit the lead-out electrode plate, so that the limit precision of the lead-out electrode plate is improved.

The present invention will be described in further detail with reference to the accompanying drawings and examples; however, the present invention is not limited to the embodiment.

Drawings

FIG. 1 is an exploded schematic view of the present invention;

fig. 2 is a schematic perspective view of one of the lead-out electrode plates of the present invention;

fig. 3 is a front view of one of the extraction electrode plates of the present invention;

fig. 4 is a top view of the housing of the present invention;

fig. 5 is a schematic perspective view of the present invention;

fig. 6 is a schematic perspective view of the lead-out electrode plate and the housing of the present invention in a fitted state;

FIG. 7 is a top view of FIG. 6;

3 fig. 3 8 3 is 3 a 3 sectional 3 view 3 a 3- 3 a 3 of 3 fig. 3 7 3. 3

Detailed Description

In an embodiment, please refer to fig. 1-8, the present invention relates to an IGBT absorption capacitor, which includes a housing 1, a capacitor core 2, and two leading electrode plates 3, wherein the two leading electrode plates 3 respectively include an outer connecting plate 31, an extending plate 32 and an inner connecting plate 33, the outer connecting plate 31 is connected to the top end of the extending plate 32, the inner connecting plate 33 of one leading electrode plate is disposed on the left side of the extending plate 32, the inner connecting plate 33 of the other leading electrode plate is disposed on the right side of the extending plate 32, the inner connecting plates 33 of the two leading electrode plates are respectively electrically connected to the capacitor core 2, and the capacitor core 2, the extending plate 32 and the inner connecting plate 33 are disposed in the housing 1. The extending plate 32 is provided with a limiting groove 321, the inner side surface of the housing 1 is provided with two limiting convex parts which are in one-to-one correspondence with the limiting grooves 321 on the two leading-out electrode plates 3, and each limiting convex part is respectively in one-to-one insertion fit with the corresponding limiting groove 321.

In this embodiment, the limiting groove 321 and the limiting convex part are respectively in a long strip shape and are located in the vertical direction. The bottom end of the limiting groove 321 is open, and the limiting groove 321 penetrates through the front side surface and the rear side surface of the extending plate 32. The side of the extending plate 32 adjacent to the inner side of the housing 1 is defined as the rear side, and the side of the extending plate 32 adjacent to the capacitor core 2 is defined as the front side.

In this embodiment, the limiting protrusion is a first L-shaped member 11, the tail end of one side 111 of the first L-shaped member 11 is integrally connected with the inner side surface of the housing 1, and one side 111 of the first L-shaped member 11 is inserted into the limiting groove 321; the other side 112 of the first L-shaped element 11 is fitted on the front side of the insertion plate 32. The other sides 112 of the two first L-shaped elements 11 are arranged opposite to each other.

In this embodiment, two second L-shaped members 12 are further disposed on the inner side surface of the housing 1, the two second L-shaped members 12 are located between the two first L-shaped members 11, and the two second L-shaped members 12 are both in a strip shape and are located in the vertical direction. The two second L-shaped members 12 correspond to the two leading-out electrode sheets 3 one by one, the tail ends of one side 121 of the two second L-shaped members 12 are integrally connected with the inner side surface of the housing 1, one side 121 of each of the two second L-shaped members 12 is respectively matched with the left side or the right side of the corresponding extending-in plate 32, and the other side 122 of each of the two second L-shaped members 12 is respectively matched with the front side of the corresponding extending-in plate 32.

In this embodiment, the inner connecting plate 33 is perpendicular to the extending plate 32 and extends toward the front side of the extending plate 32; the number of the inner connecting plates 33 is two, and the two inner connecting plates 33 are distributed at intervals up and down. The inner connecting plate 33 is in a strip shape, and the thickness of the inner connecting plate 33 is smaller than that of the extending plate 32, so that the inner connecting plate 33 is thinner and is easier to be welded and fixed with the capacitor core 2.

In this embodiment, the left side and the right side of the external connection plate 31 are respectively provided with a downward limiting plate 312. Specifically, outer fishplate bar 31 is the L font, just outer fishplate bar 31's vertical part is equipped with mounting hole 311, outer fishplate bar 31's horizontal part the tail end with the top that stretches into board 32 is integrative links to each other, outer fishplate bar 31's horizontal part's the left and right sides is equipped with respectively limiting plate 312. In other embodiments, the outer plate 31 is in a straight shape.

The utility model discloses a IGBT absorption capacitor, during the equipment, carry out welded fastening with the relative both sides face of electric capacity core 2 respectively with two fishplate bar 33 that draw the electrode slice earlier, again with electric capacity core 2 together with stretch into board 32, fishplate bar 33 is put into shell 1, at this in-process, with respectively stretching into one side of first L type spare 11 of bottom opening alignment of the spacing groove 321 of board 32, and push down and draw electrode slice 3, make one side 111 of first L type spare 11 insert in the spacing groove 321, another side 112 cooperation of first L type spare 11 is stretching into board 32 front side, one side 121 cooperation of this second L type spare 12 is stretching into board 32 left side or right side, another side 122 cooperation of this second type spare L12 is stretching into board 32 front side, and simultaneously, two spacing piece cards on shell 1 top outside on fishplate bar 31, as shown in fig. 6-8. Finally, epoxy resin is poured into the housing 1.

The utility model discloses a IGBT absorption capacitor, its utilization is stretched into spacing groove 321 of board 32 and the 11 cooperations of first L type spare of 1 medial surface of shell, can prevent to draw electrode slice 3 about taking place to squint on the one hand, ensures to draw electrode slice 3 stable in position on the shell, and on the other hand can prevent to draw electrode slice 3's external board 33 and take place to rock, the perk to ensure to draw electrode slice 3's the straightness that hangs down, need not to correct when making follow-up epoxy that pours into, the process is more simple, work efficiency is high.

The above embodiments are only used to further illustrate the present invention, but the present invention is not limited to the embodiments, and any simple modification, equivalent change and modification of the technical entity of the present invention to the above embodiments all fall into the protection scope of the present invention.

Claims

1. An IGBT absorption capacitor comprises a shell, a capacitor core and two lead-out electrode plates, wherein the two lead-out electrode plates respectively comprise an outer connecting plate, a stretching-in plate and an inner connecting plate; the method is characterized in that: the extending plates of the two leading-out electrode plates are respectively provided with a limiting groove, the inner side surface of the shell is provided with a plurality of limiting convex parts which are in one-to-one correspondence with the limiting grooves on the two leading-out electrode plates, and the limiting convex parts are respectively in one-to-one insertion fit with the corresponding limiting grooves.

2. The IGBT snubber capacitor of claim 1, wherein: the limiting groove and the limiting convex part are respectively in a long strip shape and are positioned in the vertical direction.

3. The IGBT snubber capacitor of claim 2, wherein: the limiting groove bottom end is opened, and the limiting groove penetrates through the front side face and the rear side face of the stretching-in plate.

4. The IGBT snubber capacitor of claim 3, wherein: the limiting convex part is a first L-shaped part, the tail end of one side of the first L-shaped part is integrally connected with the inner side surface of the shell, and one side of the first L-shaped part is in inserted fit with the limiting groove; the other side of the first L-shaped part is matched with the front side of the extending plate.

5. The IGBT snubber capacitor of claim 4, wherein: the inner side surface of the shell is also provided with two second L-shaped pieces which are both in a strip shape and are positioned in the vertical direction; the two second L-shaped pieces correspond to the two leading-out electrode plates one by one, the tail ends of one side of each second L-shaped piece are integrally connected with the inner side face of the shell, one side of each second L-shaped piece is matched with the left side or the right side of the corresponding extending-in plate, and the other side of each second L-shaped piece is matched with the front side of the corresponding extending-in plate.

6. The IGBT snubber capacitor of claim 5, wherein: the extending-in plate is respectively provided with one limiting groove, the number of the first L-shaped pieces is two, and the two second L-shaped pieces are positioned between the two first L-shaped pieces.

7. The IGBT snubber capacitor of claim 1, wherein: the thickness of the inner connecting plate is smaller than that of the extending plate.

8. The IGBT snubber capacitor of claim 1 or 6, wherein: the inner connecting plate is perpendicular to the extending plate and extends towards the front side of the extending plate; the number of the inner connecting plates is at least two, and the at least two inner connecting plates are distributed at intervals up and down.

9. The IGBT snubber capacitor of claim 1, wherein: and downward limiting plates are arranged on the left side and/or the right side of the outer connecting plate and clamped outside the top end of the shell.

10. The IGBT snubber capacitor of claim 9, wherein: the outer fishplate bar is L font, just the vertical part of outer fishplate bar is equipped with the mounting hole, the tail end of the horizontal part of outer fishplate bar with stretch into the integrative linking to each other in top of board, the left and right sides of the horizontal part of outer fishplate bar is equipped with respectively the limiting plate.