CN204258594U - The isolation rubber cushion blocks of IGBT pipe binding post and frequency converter - Google Patents

Abstract

A kind of isolation rubber cushion blocks of IGBT pipe binding post, described isolation rubber cushion blocks top and sidewall opening form two terminal grooves arranging corresponding to two binding posts of IGBT pipe one end, interval between two terminal grooves is corresponding with the gap between two binding posts, and the interval that two terminal grooves are asked is provided with protruding spaced-apart beams.The isolation rubber cushion blocks of IGBT pipe binding post of the present utility model is arranged on GBT pipe binding post and asks, can effectively ensure electric clearance, stop foreign matter and mislead, and improves the reliability of frequency converter, and structure is simple, and installation aspect is both artistic and practical.The utility model additionally provides a kind of local rationally, the frequency converter that good heat dissipation effect, cost are low.

Description

The isolation rubber cushion blocks of IGBT pipe binding post and frequency converter

Technical field

The utility model belongs to Low Voltage Electrical Apparatus, relates to the isolation rubber cushion blocks of the IGBT pipe binding post of a kind of frequency converter and frequency converter.

Background technology

The birth of frequency converter comes from the demand of alternating current machine to stepless speed regulation, along with the appearance of the parts such as thyristor, static induction transistor, the ambipolar thyristor of high pressure resistant insulation grid, electrical technology has had the change of making rapid progress, frequency converter timing technology also develops thereupon, the special pulse-width modulation VVVF speed regulation technology new step that allowed frequency converter climb up especially.

But along with the continuous extension of power electronic technology application, frequency converter also gradually be deep into industrial every field, therefore market is to the performance requirement of frequency converter, and power requirement also gets more and more, and powerful frequency converter is also born thereupon; Big-power transducer is concerning the layout requirements of structure relative to higher small-power, because the capacity of device, quantity, cooling requirements is all relatively high.Layout unreasonable will cause that whole equipment cooling is poor, volume is large, cost is high.And existing a lot of transducer power device is also as far as possible with high power valve, what cause device like this is excessive according to patience, adds design cost; Radiating mode is also be contained in above a module radiator by unified for device, cause the large weight of monolithic radiator volume large like this, and weight is large, also high to the requirement of assembling, give to produce to install and bring very large inconvenience, sometimes need two assembly crewmans even above to go to install, radiating effect neither be fine simultaneously.

And existing frequency converter device is more, assembling process is complicated, and production line station is too much, and efficiency of assembling is not high.Such as, the electrochemical capacitor voltage withstand class that frequency converter adopts is low, need the parallel connection of multiple electric capacity just can match rated capacity, so cause electric capacity quantity many, mounting means single on complete machine makes whole machine installation time-consuming, design needs the assembly problem considered to increase, and adds design and assembly cost; And, it is all the simple overlap joint adopting copper bar that the both positive and negative polarity of existing capacitor of frequency converter connects, and makes the stray inductance in circuit excessive, needs the fail safe by very jumbo Absorption Capacitance guarantee module on capacitance module, this makes electric capacity cost increase, capacitance module reduced lifetime.

And frequency converter needs minimizing of volume on the one hand, device is many again on the one hand, needs again to ensure the current-carrying between electrical connection, makes the electric clearance between some device terminal there is certain hidden danger in actual applications.Such as, with the terminal of IGBT pipe example, PN terminal distance is very near, because of the requirement of copper bar ampacity, distance between copper bar and copper bar is too near, there is potential safety hazard, generally adopts the fixing hole as far as possible making copper bar eccentric to eliminate this hidden danger, so just make the processing of copper bar become difficulty, actual effect is not good yet.

Summary of the invention

The purpose of this utility model is the defect overcoming prior art, provides a kind of isolation rubber cushion blocks of IGBT pipe binding post of simple structure, high reliability and local rationally, the frequency converter that good heat dissipation effect, cost are low.

For achieving the above object, the utility model have employed following technical scheme:

A kind of isolation rubber cushion blocks of IGBT pipe binding post, described isolation rubber cushion blocks 602 top and sidewall opening form two terminal grooves 6021 arranging corresponding to two binding posts of IGBT pipe 601 one end, interval 6023 between two terminal grooves 6021 is corresponding with the gap 6033 between two binding posts, the interval 6023 between two terminal grooves 6021 is provided with protruding spaced-apart beams 6022.

Further, the bottom of each binding post 603 of IGBT pipe and lateral opening form protective trough 6034, are provided with protective pad 6031 in protective trough 6034; First boss 6024 that arrange corresponding to protective trough 6034 is also provided with in the terminal groove 6021 of described isolation rubber cushion blocks 602, the sidewall notches 6026 forming link terminal 603 sidewall between inner groovy 6025, first boss 6024 corresponding with protective pad 6031 and terminal groove 6021 sidewall is provided with in first boss 6024.

Further, the both sides, each binding post 603 top of IGBT pipe are provided with step surface 6035, extend to form and coordinate fixing hold-down plate surface 6027 with step surface 6035 in described terminal groove 6021 top two side direction terminal groove 6021.

The utility model also provides a kind of frequency converter, the IGBT module 6 comprising radiator and arrange on a heat sink; Described IGBT module 6 comprises multiple IGBT and manages, the two ends of IGBT pipe 601 are provided with the binding post 603 of wiring, between two binding posts 603 of IGBT pipe 601 one end, be provided with described isolation rubber cushion blocks 602, isolation rubber cushion blocks 602 also can isolate binding post and the radiator of IGBT pipe.

Further, described IGBT module 6 comprises three groups of IGBT single-phase modules, often organizes the IGBT pipe that IGBT single-phase module comprises multiple parallel connection.

Further, the mode that described frequency converter adopts vertical ground wall built-up to install, comprise base 9, be provided with the cooling fan 1 of air-draft-type in one end of base 9, other end sidewall is provided with air inlet, and radiator is arranged in base 9 near cooling fan 1; The same side of described radiator is provided with IGBT module 6 and rectification module 3, and rectification module 3 arranges on a heat sink near one end of cooling fan 1, and IGBT module 6 is arranged on radiator on one end of air inlet; One end that base 9 is provided with cooling fan 1 is provided with line terminal 2, and the other end is provided with support 904, is provided with capacitance component in support 904.

Further, described rectification module 3 comprises three groups of diode single-phase modules, often organizes the diode that diode single-phase module comprises multiple parallel connection.

Further, described capacitance component 8 comprises the multiple electrochemical capacitors 803 be fixedly mounted on electric capacity mounting panel 804, it is a capacitance group that every two electrochemical capacitors 803 are connected in series by electric capacity connection copper bar 805, electric capacity mounting panel 804 is provided with multiple capacitance group, and the female copper bar 801 of the electric capacity negative pole arranged by lamination between multiple capacitance group and the female copper bar 802 of capacitance cathode are connected in parallel; Middle level insulation board 807 is provided with between the female copper bar 801 of electric capacity negative pole and the female copper bar 802 of capacitance cathode.

Further, the female copper bar 801 of the electric capacity negative pole of capacitance component and female copper bar 802 side of capacitance cathode are respectively equipped with the negative pole is connected with IGBT module 6 and connect copper bar 8021 and positive pole connects copper bar 8022, and negative pole connection copper bar 8021 is connected copper bar 8022 and is provided with the multiple connecting holes be connected with the binding post of the IGBT pipe of IGBT module 6 with positive pole.

The isolation rubber cushion blocks of IGBT pipe binding post of the present utility model is arranged between GBT pipe binding post, can effectively ensure electric clearance, stop foreign matter and mislead, and improves the reliability of frequency converter, and structure is simple, and installation aspect is both artistic and practical.Frequency converter of the present utility model is rationally distributed, optimizes heat dispersion.Module adopts the mode of multiple parallel connection to reduce costs, and reduces complying with of Module specifications resistance to.Radiator is divided into polylith, reduces single radiator volume, shortens heat dissipation path, improve efficiency of assembling, reduce cost of labor.

Accompanying drawing explanation

Fig. 1 is the wind flow direction schematic diagram of the utility model frequency converter;

Fig. 2 is the structure chart of the utility model frequency converter;

Fig. 3 is the assembling schematic diagram of the utility model frequency converter;

Fig. 4 is the structure chart of the utility model capacitance component;

Fig. 5 is the exploded view of the utility model capacitance component;

Fig. 6 is the schematic diagram of the utility model capacitance component bottom mounting plate;

Fig. 7 is the schematic diagram at the utility model capacitance component top;

Fig. 8 is layout and the connecting circuit figure of the electrochemical capacitor of the utility model capacitance component;

Fig. 9 is that the utility model IGBT manages the assembly structure figure with isolation rubber cushion blocks;

Figure 10 is that the utility model IGBT manages the exploded view with isolation rubber cushion blocks;

Figure 11 is the structure chart bottom the utility model IGBT pipe;

Figure 12 is the structure chart of the utility model isolation rubber cushion blocks.

Embodiment

Below in conjunction with the embodiment that accompanying drawing 1 to 12 provides, further illustrate the embodiment of frequency converter of the present utility model.Frequency converter of the present utility model is not limited to the description of following examples.

As Figure 1-3, frequency converter comprises base 9, is provided with the cooling fan 1 of air-draft-type in one end of base 9, and radiator is arranged in base 9 near cooling fan 1, and described radiator comprises the first radiator 4 and the second radiator 5 be arranged side by side; The same side of described radiator is provided with IGBT module 6 and rectification module 3, rectification module 3 arranges on a heat sink near one end of cooling fan 1, IGBT module 6 is arranged on radiator on one end of air inlet, rectification module 3 closer to cooling fan 1, radiator is also provided with temperature relay 7 than IGBT module 6; One end that base 9 is provided with cooling fan 1 is provided with line terminal 2, and the other end is also provided with capacitance component 8.

Described base 9 comprises pedestal 901, and pedestal 901 end side wall opening is provided with cooling fan 1, and other end sidewall is provided with multiple air inlet, forms the air channel being easy to dispel the heat in pedestal 901; Pedestal 901 open top, near cooling fan 1 one end in the air channel that first radiator 4 and the second radiator 5 are disposed side by side on pedestal, connected by brace 903 between first radiator 4 and the second radiator 5, pedestal 901 top is provided with cover plate 902 near air inlet one end, one end of radiator pushed down by cover plate 902, and pedestal 901, cover plate 902 are fixedly connected with brace 903 and are fixed in base 9 by radiator; Cover plate 902 is equipped with the support 904 installing capacitance component 8, and capacitance component 8 is arranged in support 904.

The mode that frequency converter of the present utility model adopts vertical ground wall built-up to install, air flow is (as shown in Figure 1) from lower to upper, described cooling fan 1 is arranged on the upper end of base 9, be positioned at the top of radiator, adopt the mode of exhausting, ensure that the circulation of air is smooth and easy, and the windage effectively lowered in radiator air passage and noise.Described line terminal 2 is arranged on the position of the corresponding cooling fan 1 in base 9 upper end, line patten's design be enterprising on go out mode, facilitate the line at user scene.

Described rectification module 3 comprises three groups of diode single-phase modules, often organizes diode single-phase module and comprises 6 diodes in parallel.Described rectification module 3 adopts the parallel way of 6 diodes effectively to reduce costs, rectification module 3 is installed on a heat sink near air outlet and line terminal 2, rectification module 3 arranges on a heat sink near one end of cooling fan 1, IGBT module 6 is arranged on radiator on one end of air inlet, rectification module 3 than IGBT module 6 closer to cooling fan 1, inlet wire distance can be shortened like this, simultaneously the caloric value of diode is much smaller than the caloric value of IGBT, be conducive to the hot-fluid trend that radiator vertical ground is installed, meet heat from high toward the principle of low conduction, be conducive to accelerating heat radiation.

Described IGBT module 6 comprises three groups of IGBT single-phase modules, often organizes IGBT single-phase module and comprises three IGBT pipe (insulated gate bipolar transistor) in parallel.Described IGBT module 6 adopts the parallel connection of three IGBT pipes one to export as a phase of inverter side, effectively can reduce device cost, and can be carried out the heat radiation of an alternative module by the heat radiation of multiple little module, the heat radiation of even module; IGBT module is fixed on air inlet position, and near inverter side; The essential core parts of frequency converter are just inverter side, so ensure that the shortest path of inverter circuit can reduce the stray inductance of the input side of inversion pipe as far as possible, thus the dv/dt that IGBT turning on and off can be reduced, the useful life extending IGBT reduces equipment loss.

It is identical with the length of the second radiator 5 with the second radiator 5, first radiator 4 that described radiator comprises the first radiator 4 be disposed side by side in base 9, and the width of the first radiator 4 is less than the second radiator 5; First radiator 4 and the second radiator are disposed in parallel in inside the same air channel of base 9.The width of the first radiator 4 is about 1/2nd, one group of diode single-phase module of the second radiator 5 and one group of IGBT single-phase module is arranged on the first radiator 4, and two groups of diode single-phase modules and two groups of IGBT single-phase modules are arranged on the second radiator 5; Diode single-phase module and IGBT single-phase module are all arranged on the first radiator 4 and the second unidirectional side of radiator 5.Certainly, radiator also can for three pieces of being arranged side by side, or more.First radiator 4 and the second radiator 5 are also listed in inside same air channel, be screwed in base 9, radiator is made the weight and volume that two or more not only can reduce single radiator, but also make it process simply, flexible for installation, heat dissipation path shortens, and radiator can be avoided excessive overweight and cause a workman to install inconvenient problem, can also ensure that the heat dispersion of radiator is more perfect.

Described temperature relay 7 is mainly used in the temperature detection of spreader surface, and multiple temperature relay 7 distributes to arrange in the mode of array and is convenient on a heat sink detect a radiator temperature put.Described capacitance component 8 is arranged in the support 904 of base 9, be placed in inverter side lower end and close inverter side, the upper end of radiator, makes electric capacity and module substantially on same horizontal plane, this layout can reduce the whole height of frequency converter, saves the material cost of radiator.

Frequency changer of the present utility model is reasonable, optimizes heat dispersion; The mode that rectifier diode and IGBT module adopt multiple device to be connected in parallel, reduce complying with of Module specifications resistance to, save cost, avoid being limited to electric elements because electric current is excessive and cause source problem out of stock, the not good problem causing the poor heat radiation of frequency converter of the heat dissipation problem of individual devices can be avoided simultaneously; Radiator is divided into polylith, and separately heat radiation, reduces single radiator volume, shorten heat dissipation path, improve efficiency of assembling, reduce cost of labor, be particularly adapted to the installation of big-power transducer.

The assembling process of frequency converter of the present utility model is simple and convenient, can be completed the assembling of whole machine by an assembly crewman; During assembling, first two module radiators 4,5 are advanced in base from air inlet, with screw, two module radiators are locked at submounts respectively; Give rectification module 3, IGBT module 6 and temperature relay 7 smeared heat conductive silica gel after be separately fixed at above radiator with screw, the installation of above-mentioned three modules can in no particular order, but the direction of installing must be noted; Again the capacitance component 8 assembled directly is contained on support 904.

As Figure 4-8, described capacitance component 8 comprises the multiple electrochemical capacitors 803 be arranged on electric capacity mounting panel 804; Every two electrochemical capacitors 803 connect copper bar 805 by electric capacity, and to be connected in series be a capacitance group, and electric capacity mounting panel 804 is provided with multiple capacitance group, and the female copper bar 801 of electric capacity negative pole arranged by lamination between multiple capacitance group and the female copper bar 802 of capacitance cathode are connected in parallel; Between the female copper bar 801 of electric capacity negative pole and the female copper bar 802 of capacitance cathode, be provided with middle level insulation board 807, the female copper bar 802 of capacitance cathode is provided with upper strata insulation board 806.Described capacitance component 8 comprises 18 electrochemical capacitors, 803,18 electrochemical capacitors 803 and arranges in the mode of array and be fixedly mounted on electric capacity mounting panel 804, and 18 electrochemical capacitors 803 connect copper bar 805 by 9 electric capacity and are connected into nine groups of capacitance group; The upper of the array that electrochemical capacitor 803 forms is stacked with the female copper bar 801 of electric capacity negative pole and the female copper bar 802 of capacitance cathode successively; The female copper bar 801 of electric capacity negative pole hollows out electric capacity with the female copper bar 802 of capacitance cathode and is connected the position of copper bar 805 and ensures electric clearance and creepage distance, the negative pole of capacitance group connects by the female copper bar 801 of electric capacity negative pole, the positive pole of capacitance group connects by the female copper bar 802 of capacitance cathode, realizes being connected in parallel of nine groups of capacitance group; Between the female copper bar 801 of electric capacity negative pole and the female copper bar 802 of capacitance cathode, be provided with middle level insulation board 807, the female copper bar 802 of capacitance cathode is provided with upper strata insulation board 806.The female copper bar 801 of electric capacity negative pole and female copper bar 802 side of capacitance cathode are respectively equipped with negative straps 8011 and positive strap 8021, be respectively equipped with at opposite side the negative pole be connected with IGBT module 6 and connect copper bar 8021 and positive pole connects copper bar 8022, negative pole connects copper bar 8021 and is connected copper bar 8022 with positive pole and is provided with the multiple connecting holes be connected with the binding post of the IGBT pipe of IGBT module 6.

If capacitance component 8 all can be made to take too many space in face in a certain direction by straight line word order or vertical arrangement nine groups of capacitance group, therefore capacitance component 8 of the present utility model adopts the arrangement mode of compound, ensures that taking up room of electric capacity is minimum.The electrochemical capacitor 803 of nine groups of capacitance group forms the array that 6 take advantage of 3, and wherein six groups of capacitance group are arranged side by side the array that composition 6 takes advantage of 2, and 6 electrochemical capacitor 803 order word order compositions 6 of other three groups of electric capacity take advantage of the array of 1, and common formation 6 takes advantage of the array of 3.The array of nine groups of electrochemical capacitors and electrical connection schematic diagram as shown in Figure 8, six groups of capacitance group according to positive pole upper, negative pole under order arrangement, another three groups of capacitance group are according to positive pole on a left side, and negative pole is at right word order.

The main assembling flow path of the utility model capacitance component 8 for: first 18 electrochemical capacitors 803 are arranged on electric capacity mounting panel 804 according to the array shown in Fig. 8, six groups of capacitance group according to positive pole upper, negative pole under order arrangement, another three groups of capacitance group are according to positive pole on a left side, and negative pole is at right word order; During installation with screw electric capacity mounting panel 804 a little fastener guarantee electric capacity do not fall, then according to the direction of the adjustment of both positive and negative polarity as depicted in figure 8 electric capacity, that can not lock is too tight, regulates when facilitating the later stage to install copper bar.Connect copper bar 805 by electrochemical capacitor one group of connection between two with electric capacity, note electric capacity cathode and anode directions.The female copper bar 801 of electric capacity negative pole is installed successively, middle level insulation board 807, the female copper bar 802 of capacitance cathode and upper strata insulation board 806, be fixed on electric capacity with electric capacity split nut 808 by insulation board and busbar, the set bolt of last fastening electric capacity mounting panel By Electrolysis electric capacity, completes assembly and installs.Between the female copper bar 801 of electric capacity negative pole and capacitor terminal, also can be provided with lower floor's insulation board (not shown), ensure the electric property safety between the female copper bar of electric capacity both positive and negative polarity and capacitance shell.

Female for both positive and negative polarity copper bar is made the female copper bar of two pieces of laminations by capacitance component of the present utility model, and hollow out electric capacity and connect the position of row and ensure electric clearance and creepage distance, centre insulating material separates, and ensures electrical performance demands; Not only increase efficiency of assembling, can also the effective stray inductance reducing circuit.If if both positive and negative polarity simply overlaps by the mode that similar electric capacity connects copper bar 805 according to circuit by the both positive and negative polarity copper bar above electrochemical capacitor array, the stray inductance Ls of busbar then can be made very large, thus the dv/dt added above IGBT module, cause module easily to be damaged.The present embodiment capacitance component adopts two pieces of large copper bars, the female copper bar 802 of capacitance cathode and the female copper bar 801 of electric capacity negative pole adopt the mode of lamination, centre insulating material separates, the both positive and negative polarity of electrochemical capacitor is connected according to the mode shown in Fig. 7, the distributed capacitance adopting the female copper bar of the both positive and negative polarity of lamination to be formed can offset the stray inductance between copper bar, extends the useful life of IGBT module.The both positive and negative polarity of distributed capacitance be according to the rectification of frequency converter front end after polarity determine, so be positive pole away from capacitor terminal side in the present embodiment, be negative pole close to terminals side.

Capacitance component compact conformation of the present utility model, easy to assembly, effectively can reduce the stray inductance of circuit, capacitance resistance first assembles as a whole being installed to again on frequency converter, the whole process of installing can be installed on a fixing erecting bed, personnel convenient for assembly install fixing, have effectively shortened the installation rate of complete machine.

Described IGBT module 6 comprises three groups of IGBT single-phase modules, and often organize IGBT single-phase module and adopt three IGBT pipe (insulated gate bipolar transistor) phases as inverter side in parallel to export, IGBT pipe is arranged on a heat sink.The two ends of IGBT pipe 601 are provided with the binding post 603 of wiring, the binding post 603 of IGBT module can be screwed with the copper bar of capacitance component and be connected, between two binding posts 603 of IGBT pipe 601 one end, be provided with the isolation rubber cushion blocks 602 ensureing electric clearance, isolation rubber cushion blocks 602 also can isolate the binding post of IGBT pipe and the stationary plane of radiator.As shown in figure 11, be plastic cement parcel bottom the binding post of IGBT pipe, if the screw installing copper bar is long, bottom can be damaged, cause the stationary plane of screw and IGBT pipe distance too closely to produce electric discharge phenomena; In addition, for the normal process of the ampacity and copper bar that ensure system is unaffected, it is relatively wide that copper bar needs again to do, so just make that the distance between the P pole binding post of IGBT pipe and N pole binding post is too short is less than 8mm, if there is the foreign matter of any conduction to be attached on two-stage copper bar, will directly make two-stage conducting short circuit; So, for preventing Manufacturing Worker from damaging module because by mistake taking screw, and preventing the too short and foreign matter of the electric clearance between P pole binding post and N pole binding post, between the P pole binding post and N pole binding post of IGBT pipe, being provided with isolation rubber cushion blocks 602.

As shown in figs9-12, isolation rubber cushion blocks 602 is provided with between the P pole binding post in IGBT pipe 601 one end and N pole binding post, described isolation rubber cushion blocks 602 top and sidewall opening form two terminal grooves 6021 arranging corresponding to two binding posts of IGBT pipe 601 one end, interval 6023 between two terminal grooves 6021 is corresponding with the gap 6033 between two binding posts, the interval 6023 between two terminal grooves 6021 is provided with protruding spaced-apart beams 6022.

As shown in figure 11, the bottom of described binding post 603 and lateral opening form protective trough 6034, and be provided with protective pad 6031 in protective trough 6034, both sides, binding post 603 top are provided with step surface 6035; As shown in figure 12, first boss 6024 that arrange corresponding to protective trough 6034 is also provided with in the terminal groove 6021 of described isolation rubber cushion blocks 602, the inner groovy 6025 corresponding with protective pad 6031 is provided with in first boss 6024, form the sidewall notches 6026 of link terminal 603 sidewall between the first boss 6024 and terminal groove 6021 sidewall, extend to form in terminal groove 6021 top two side direction terminal groove 6021 and coordinate fixing hold-down plate surface 6027 with the step surface 6035 of both sides, binding post 603 top.

During installation, IGBT pipe is screwed on radiator, locking; Direct afterwards isolation rubber cushion blocks 602 to be inserted between binding post from the side.P pole binding post and the N pole binding post of IGBT are wrapped in terminal groove 6021, and protective pad 6031 is wrapped in inner groovy 6025, the fixed surface of completely isolated IGBT binding post and radiator, and spaced-apart beams 6022 is isolated between two binding posts; The sidewall of the isolation sidewall notches 6026 of rubber cushion blocks 602 and hold-down plate surface 6027 and binding post 603 and step surface 6035 coordinate to be fixed; Can effectively ensure electric clearance, stop foreign matter and mislead, improve the reliability of frequency converter, and structure is simple, installation aspect, both artistic and practical.

Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, some simple deduction or replace can also be made, all should be considered as belonging to protection range of the present utility model.

Claims (9)

1. the isolation rubber cushion blocks of an IGBT pipe binding post, it is characterized in that: described isolation rubber cushion blocks (602) top and sidewall opening form corresponding two terminal grooves (6021) arranged of two binding posts managing (601) one end with IGBT, interval (6023) between two terminal grooves (6021) is corresponding with the gap (6033) between two binding posts, the interval (6023) between two terminal grooves (6021) is provided with protruding spaced-apart beams (6022).

2. isolation rubber cushion blocks according to claim 1, it is characterized in that: the bottom of each binding post (603) of IGBT pipe and lateral opening form protective trough (6034), are provided with protective pad (6031) in protective trough (6034); First boss (6024) that arrange corresponding to protective trough (6034) is also provided with in the terminal groove (6021) of described isolation rubber cushion blocks (602), be provided with the inner groovy (6025) corresponding with protective pad (6031) in first boss (6024), between the first boss (6024) and terminal groove (6021) sidewall, form the sidewall notches (6026) of link terminal (603) sidewall.

3. isolation rubber cushion blocks according to claim 1 and 2, it is characterized in that: each binding post (603) both sides, top of IGBT pipe are provided with step surface (6035), extend to form in described terminal groove (6021) top two side direction terminal groove (6021) and coordinate fixing hold-down plate surface (6027) with step surface (6035).

4. a frequency converter, is characterized in that: the IGBT module (6) comprising radiator and arrange on a heat sink; Described IGBT module (6) comprises multiple IGBT and manages, the two ends of IGBT pipe (601) are provided with the binding post (603) of wiring, between two binding posts (603) of IGBT pipe (601) one end, be provided with the arbitrary described isolation rubber cushion blocks (602) of claim 1-3, isolation rubber cushion blocks (602) also can isolate binding post and the radiator of IGBT pipe.

5. frequency converter according to claim 4, is characterized in that: described IGBT module (6) comprises three groups of IGBT single-phase modules, often organizes the IGBT pipe that IGBT single-phase module comprises multiple parallel connection.

6. frequency converter according to claim 4, it is characterized in that: the mode that described frequency converter adopts vertical ground wall built-up to install, comprise base (9), the cooling fan (1) of air-draft-type is installed in one end of base (9), other end sidewall is provided with air inlet, and radiator is arranged in base (9) near cooling fan (1); The same side of described radiator is provided with IGBT module (6) and rectification module (3), rectification module (3) is arranged on a heat sink near one end of cooling fan (1), and IGBT module (6) is arranged on radiator on one end of air inlet; One end that base (9) is provided with cooling fan (1) is provided with line terminal (2), and the other end is provided with support (904), and support is provided with capacitance component in (904).

7. frequency converter according to claim 6, is characterized in that: described rectification module (3) comprises three groups of diode single-phase modules, often organizes the diode that diode single-phase module comprises multiple parallel connection.

8. frequency converter according to claim 6, it is characterized in that: described capacitance component (8) comprises the multiple electrochemical capacitors (803) be fixedly mounted on electric capacity mounting panel (804), by electric capacity, every two electrochemical capacitors (803) connect that copper bar (805) is connected in series is a capacitance group, electric capacity mounting panel (804) is provided with multiple capacitance group, and the female copper bar (801) of the electric capacity negative pole arranged by lamination between multiple capacitance group and capacitance cathode mother's copper bar (802) are connected in parallel; Middle level insulation board (807) is provided with between the female copper bar (801) of electric capacity negative pole and the female copper bar (802) of capacitance cathode.

9. frequency converter according to claim 8, it is characterized in that: the female copper bar (801) of the electric capacity negative pole of capacitance component and female copper bar (802) side of capacitance cathode are respectively equipped with the negative pole be connected with IGBT module (6) and connect copper bar (8021) and positive pole connects copper bar (8022), and negative pole connection copper bar (8021) is connected copper bar (8022) and is provided with the multiple connecting holes be connected with the binding post of the IGBT pipe of IGBT module (6) with positive pole.