CN208767985U - A kind of high-power doube bridge control frequency converter - Google Patents

Abstract

A kind of high-power doube bridge of the utility model controls frequency converter, is integrated in fixed frame and entirety is fixed to multiple IGBT encapsulation groups of installation leg surface, the positive and negative electrode terminal in IGBT encapsulation group is external to terminal-connecting element；Fixed frame is corresponding installation with IGBT encapsulation group, and installation leg surface is equipped with the terminal plate of protrusion；Terminal plate is passed through out of slot in fixed frame to be connected with IGBT encapsulation group, every group of IGBT encapsulation group includes IGBT encapsulation unit and the laminating bus bar group unit that is stacked above IGBT encapsulation unit, is respectively arranged with latch hook and lock on the contact surface of both fixed frame and installation column；The multiple lock chambers being recessed inwardly are offered on the contact surface of installation column；Lock chamber is distributed in the two sides of terminal plate；Latch hook is installed in lock chamber by its middle part shaft；The contact surface of fixed frame is equipped with lock；It is caught on after in lock insertion lock chamber by the front end of latch hook；The rear end of latch hook is provided with the spring for acting on lock chamber.

Description

A kind of high-power doube bridge control frequency converter

Technical field

The utility model relates to frequency conversion equipment technical fields, control frequency converter more particularly to a kind of high-power doube bridge.

Background technique

Frequency converter is the important component of electric car.Frequency converter is that the electric energy of direct current (DC) form is converted to friendship The electric device of galvanic electricity (AC), then alternating current can be used to drive AC induction motor, be converted to the process of exchange in direct current In, the frequent variation of frequency causes device to generate a large amount of heat, and it is especially reasonable in the technique of production assembly that this allows for device, So that frequency converter is run in the most efficient manner, in existing substrate installation manufacturing process, since device inserting work is one by one Soldering connects again after inserting, and the bothersome time-consuming of inserting process, volume are big, and power is low.

Utility model content

The utility model provides a kind of high-power doube bridge control frequency converter, and which solve the installation columns of main body and entirety It is connected and fixed problem between IGBT encapsulation group, improves traditional attachment, it is not flexible to assemble matching relationship solution structure, Load and unload inconvenient problem.

A kind of high-power doube bridge of the utility model controls frequency converter, is integrated in fixed frame and entirety is fixed to installation column Multiple IGBT encapsulation groups on surface, the positive and negative electrode terminal in IGBT encapsulation group are external to terminal-connecting element；It is characterized by: solid Determining frame with IGBT encapsulation group is corresponding installation, and installation leg surface is equipped with the terminal plate of protrusion；Terminal plate is out of fixed frame It passes through in slot and is connected with IGBT encapsulation group, every group of IGBT encapsulation group includes IGBT encapsulation unit and be stacked in IGBT envelope The laminating bus bar group unit above unit is filled, is respectively arranged with lock on the fixed frame and the contact surface of both installation columns Hook and lock；The multiple lock chambers being recessed inwardly are offered on the contact surface of installation column；The lock chamber is distributed in wiring The two sides of plate；The latch hook is installed in the lock chamber by its middle part shaft；The contact surface of the fixed frame is equipped with institute State lock；It is caught on after in lock insertion lock chamber by the front end of latch hook；The rear end of the latch hook, which is provided with, acts on lock chamber Spring；It is boundary with terminal plate, connects with being additionally provided on described lock chamber the same side and adjacent installation leg surface with lock chamber Logical cavity；It is additionally provided with the raised head for pressing in the rear end of latch hook, and the raised head is oppositely arranged with spring；It is described convex It starts and is pierced by from the cavity；Spring-compressed after raised head is pressed, latch hook is separated with lock；Spring top after release projection head It rises, lock is caught in the front end of latch hook.

Preferably, the front end of the latch hook is additionally provided with oblique slope surface；Snap action is pushed up in oblique slope surface and to side Unlocking hook；The lock is columnar round bar；The latch hook is corresponding with the position of lock.

Preferably, multiple positioning pins used for positioning are additionally provided on the contact surface of installation column；In connecing for fixed frame Contacting surface is equipped with the positioning round orifice of corresponding positioning pin.

Preferably, the installation column is hexagonal prism structure, and revolution side includes three long side surfaces and three Short sides, long side surface and short side one are every an alternate setting, contact surface of the long side surface as Connection Bracket, adjacent in short sides Two groups of IGBT encapsulation groups between capacitance group is installed.

Preferably, the IGBT encapsulation group includes the IGBT encapsulation unit of two groups of side by side parallel setting, the terminal plate It is passed through from the gap between two groups of IGBT encapsulation units.

Preferably, the laminating bus bar group unit is respectively arranged with IGBT pushing plate, anode even by outer layer to internal layer Fishplate bar, negative pole connecting plate and single-phase connecting plate；The IGBT encapsulation unit by support frame, the nitridations of support frame two sides is set It aluminum substrate, the multiple groups IGBT being fitted on the outside of the aluminium nitride substrate and is erected above support frame for clamping two sides multiple groups The spring clip of IGBT forms.

Preferably, positive terminal connector and negative terminal connector are additionally provided in the end of the installation column；Institute It states positive terminal connector while connecting the positive terminal in multiple IGBT encapsulation groups in positive pole connecting plate；The negative pole end Sub- connecting member connects the negative terminal in multiple IGBT encapsulation groups in negative pole connecting plate simultaneously.

The beneficial effects of the utility model are: providing a kind of high-power doube bridge control frequency converter, have the advantage that

1, compared with existing structure, the frequency changer is flexible for installation, convenient disassembly, can carry out according to the actual situation Structure replacement for ease of maintenaince and is safeguarded, structure is avoided to involve.

2, three groups of IGBT encapsulation groups, which are mounted on different planes and reuse positive and negative electrode terminal-connecting element, encapsulates three groups of IGBT Group is chained together, and optimization installation, the magnitude of current that can be exported simultaneously is several times usually, can reach 900 ~ 1200 kilowatts of left sides The right side, power super large occupy small in size, density height, rapid heat dissipation.

Detailed description of the invention

Fig. 1 is a kind of structural schematic diagram of high-power doube bridge control frequency converter of the utility model；

Fig. 2 is the structure chart for installing column；

Fig. 3 is the schematic diagram for installing column and fixed frame cooperation；

Fig. 4 is the schematic diagram of IGBT encapsulation group in the super power frequency converter of doube bridge control；

Fig. 5 is IGBT encapsulating component solution schematic diagram in the super power frequency converter of doube bridge control；

Fig. 6 is single-phase IGBT encapsulating component solution schematic diagram in the super power frequency converter of doube bridge control；

The components in the drawings are labeled as follows: 1, installing column；2, fixed frame；3, IGBT encapsulation group；4, positive terminal connects Fitting；5, negative terminal connector；11, long side；12, short side；21, latch hook；22, it latches；23, lock chamber；24, middle part turns Axis；25, spring；26, cavity；27, raised head；28, positioning pin；31, IGBT encapsulation unit；32, bus bar group unit；311, it props up Support；312, aluminium nitride substrate；313,IGBT；314, spring clip；315, conduction hole；321, IGBT pushing plate；322, anode connects Fishplate bar；323, negative pole connecting plate；324, single-phase connecting plate；322a, positive input terminal；323b, negative input terminal；324c, Phase pole output terminal；325, intercommunicating pore group；3221, the first pad hole group；3231, the second pad hole group；3241, third pad hole Group.

Specific embodiment

The preferred embodiment of the utility model is described in detail with reference to the accompanying drawing, so that the advantages of the utility model It can be easier to be readily appreciated by one skilled in the art with feature, to make the protection scope of the utility model apparent clear Define.

Attached drawing 1 to 6 is please referred to, the utility model includes:

A kind of high-power doube bridge control frequency converter, comprising: installation column 1, fixed frame 2, IGBT encapsulation group 3, positive terminal Connector 4 and negative terminal connector 5, the surface of installation column 1 separately are vertically installed with wiring board group, the top of wiring board group End is provided with connecting terminal block 61, including the first terminal plate 62, the second terminal plate 63 and third terminal plate 64, fixed frame 2 with IGBT encapsulation group 3 is three groups of settings, and three groups of terminal plates are passed through out of slot in fixed frame 2 to be connected with IGBT encapsulation group 3. It is respectively arranged with latch hook 21 and lock 22 on the contact surface of 1 the two of fixed frame 2 and installation column, in the contact of installation column 1 The multiple lock chambers 23 being recessed inwardly are offered on face, lock chamber 23 is distributed in the two sides of terminal plate.Latch hook 21 passes through its middle part Shaft 24 is installed in lock chamber 23, and latch hook 21 can be rotated around its middle part shaft 24.Simultaneously in the contact of fixed frame 2 Face is equipped with lock 22, can be caught on by the front end of latch hook 21 after lock 22 is inserted into lock chamber 23.Therefore, it is necessary to latch hooks 21 Has the external force of locking, external force band moveable lock hook 21 will realize locking connection after catching on lock 22, otherwise release latch hook after external force 21 separate with lock 22, realize separation.

The spring 25 for acting on lock chamber 23 is provided in the rear end of latch hook 21, spring 25 can provide the external force on basis, It is supplied to latch hook 21 to be moved, if one can also be increased on the central rotating shaft of latch hook 21 in order to increase elasticity power Torsional spring.

It is boundary with each terminal plate, is additionally provided with and locks on 23 the same side of lock chamber and adjacent 1 surface of installation column The only cavity 26 that chamber 23 is connected to is additionally provided with the raised head 27 for pressing, and raised head 27 and spring 25 in the rear end of latch hook 21 It is oppositely arranged.Raised head 27 is pierced by from cavity 26, and spring 25 compresses after pressing raised head 27,22 points of latch hook 21 and lock It opens；Otherwise spring 25 jacks up after release projection head 27, and lock 22 is caught in the front end of latch hook 21.

For the ease of the cooperation of lock 21 and latch hook 22, oblique slope surface is additionally provided in the front end of latch hook.When lock 22 is made Latch hook 21 is opened for oblique slope surface and to side, lock 22 is easily facilitated in this way and enters in latch hook 21.General lock 22 is column The round bar of shape, latch hook 21 is corresponding with the position of lock 22, and when fixed frame 2 and the installation assembly of column 1, latch hook 21 can be accurate Cooperate with lock 22.In order to avoid generating the influence that fault causes deformation to structure in an installation, in the contact surface of installation column 1 On be additionally provided with multiple positioning pins used for positioning 28, and the positioning round orifice of corresponding positioning pin is equipped on the contact surface of fixed frame 2. By being installed after being positioned in advance, it can be improved accuracy, avoid maloperation.

Every group of IGBT encapsulation group 3 includes two groups of side by side parallel setting IGBT encapsulation units 31 and is stacked in IGBT encapsulation The laminating bus bar group unit 32 of 31 top of unit, connecting terminal block 61 is passed through from the gap of two groups of IGBT encapsulation units 31, Laminating bus bar group unit 32 is respectively arranged with IGBT pushing plate 321, positive pole connecting plate 322, negative pole connecting plate 323 from outside to inside With single-phase connecting plate 324, the side of positive pole connecting plate 322 is provided with positive input terminal 322a, negative pole connecting plate 323 and anode The ipsilateral of input terminal is provided with negative input terminal 323b, single-phase connecting plate 324 other side opposite with positive input terminal It is provided with phase pole output terminal 324c, the section of positive terminal connector 4 is Y-shaped structure, is used for three groups of IGBT encapsulation groups In positive input terminal 322a series winding, the section of negative terminal connector 5 is also Y-shaped structure, for sealing three groups of IGBT Negative input terminal 323b series winding in dress group, optimization installation can significantly improve output power.

IGBT pushing plate 321, positive pole connecting plate 322, negative pole connecting plate 323 and single-phase connecting plate 324 are in lamination arrangement, just Pole connecting plate 322 is provided with the first pad hole group 3221, is provided with the first pin, cathode on the side of the first pad hole group 3221 Connecting plate 323 is provided with the second pad hole group 3231, and second pin, single-phase company are provided on the side of the second pad hole group 3231 Fishplate bar 324 is provided with third pad hole group 3241, and IGBT encapsulation unit includes several single IGBT, the current collection of each IGBT Pole passes through the first pad hole group and connect with the first pin, and the emitter of IGBT passes through the second pad hole group and connects with second pin It connects, the control terminal of IGBT is connected with IGBT pushing plate.

Laminating bus bar group unit 32 further includes intercommunicating pore group 325, and intercommunicating pore group 325 is set to positive pole connecting plate 322, bears On pole connecting plate 323 and single-phase connecting plate 324, connecting terminal block 61 passes through intercommunicating pore group 325, in order to facilitate connecting terminal block Welding, the side of three terminal plates, which is all provided with, is set to mirror surface structure.

IGBT encapsulation unit 31 by support frame 311, aluminium nitride substrate 312 that 311 two sides of support frame are set, be fitted in It the multiple groups IGBT 313 in the outside of aluminium nitride substrate 312 and is erected above support frame for clamping the spring clip of two sides multiple groups IGBT 314 form, and closing is provided with the hollow draft slot for placing coolant liquid, the connection setting of hollow draft slot inside support frame 311 There is conduction hole 315, conduction hole includes feed liquor conduction hole and the liquid conduction hole out that feed liquor conduction hole two sides are arranged in, frequency converter work When, good heat dissipation effect improves working efficiency.

Installation column is hexagonal prism structure, and revolution side includes three long side surfaces and three short sides, and installation is vertical 1 section of column is hexagonal structure, including three long sides and three short sides, long side 11 and short side 12 every an alternate setting, IGBT encapsulation group 3 is erected in the plane that the long side 11 extends, two groups of adjacent IGBT in the plane that short side 12 extends Position between encapsulation group is equipped with capacitance group, after being installed, is packaged into one with cylinder-like shell outside installation column It is whole.

The beneficial effect of the super power frequency converter of the utility model doube bridge control is: by installing column for three groups of IGBT Encapsulation group, which is mounted on different planes and reuses positive and negative electrode terminal-connecting element, is chained together three groups of IGBT encapsulation groups, optimizes Installation, the magnitude of current that can be exported simultaneously are several times usually, and power super large occupies small in size, excellent heat dissipation performance, hollow support The setting of frame accelerates distributing for heat, ensure that the normal work of IGBT.

The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all Using equivalent structure or equivalent flow shift made by the utility model description, it is applied directly or indirectly in other phases The technical field of pass, is also included in the patent protection scope of the utility model.

Claims (4)

1. a kind of high-power doube bridge controls frequency converter, comprising: be integrated in fixed frame and whole be fixed to installs leg surface Multiple IGBT encapsulation groups, the positive and negative electrode terminal in IGBT encapsulation group are external to terminal-connecting element；It is characterized by: fixed frame with IGBT encapsulation group is corresponding installation, and installation leg surface is equipped with the terminal plate of protrusion；Terminal plate is out of, slot in fixed frame It is connected across with IGBT encapsulation group, every group of IGBT encapsulation group includes IGBT encapsulation unit and be stacked in IGBT encapsulation unit Latch hook and lock are respectively arranged on the contact surface of both the laminating bus bar group unit of top, the fixed frame and installation column Button；The multiple lock chambers being recessed inwardly are offered on the contact surface of installation column；The lock chamber is distributed in the two of terminal plate Side；The latch hook is installed in the lock chamber by its middle part shaft；The contact surface of the fixed frame is equipped with the lock； It is caught on after in lock insertion lock chamber by the front end of latch hook；The rear end of the latch hook is provided with the spring for acting on lock chamber；With Terminal plate is boundary, and is additionally provided with the chamber being connected to lock chamber on described lock chamber the same side and adjacent installation leg surface Road；It is additionally provided with the raised head for pressing in the rear end of latch hook, and the raised head is oppositely arranged with spring；The raised head from It is pierced by the cavity；Spring-compressed after raised head is pressed, latch hook is separated with lock；Spring jacks up after release projection head, latch hook Front end catch on lock.

2. a kind of high-power doube bridge according to claim 1 controls frequency converter, it is characterised in that: the front end of the latch hook is also It is provided with oblique slope surface；Snap action in oblique slope surface and opens latch hook to side；The lock is columnar round bar；The lock Hook is corresponding with the position of lock.

3. a kind of high-power doube bridge according to claim 1 or 2 controls frequency converter, it is characterised in that: in installation column Multiple positioning pins used for positioning are additionally provided on contact surface；The setting circle of corresponding positioning pin is equipped on the contact surface of fixed frame Hole.

4. a kind of high-power doube bridge according to claim 3 controls frequency converter, it is characterised in that: the installation column is six Side shape prism structure, revolution side include three long side surfaces and three short sides, and long side surface and short side one alternate are set every one It sets, contact surface of the long side surface as Connection Bracket, capacitance group is installed between two groups of adjacent IGBT encapsulation groups in short sides.