CN104332787A - AC copper busbar - Google Patents
AC copper busbar Download PDFInfo
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- CN104332787A CN104332787A CN201410048961.XA CN201410048961A CN104332787A CN 104332787 A CN104332787 A CN 104332787A CN 201410048961 A CN201410048961 A CN 201410048961A CN 104332787 A CN104332787 A CN 104332787A
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- millimeters
- length
- oval hole
- copper
- line
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
- H01R25/16—Rails or bus-bars provided with a plurality of discrete connecting locations for counterparts
Abstract
The invention discloses an AC copper busbar. A first waist circular hole and two second waist circular holes are formed on one end board. The center of the first waist circular hole is in the central axis of the end board. The straight edge of the AC copper busbar is vertical to the central axis and furthermore the distance between the straight edge and the edge of the end board is 23.5 millimeters. The arc diameter of the first waist circular hole is 5-6 millimeters. The length range of the first waist circular hole is smaller than the first length for 4 millimeters. The two second waist circular holes are respectively arranged at two sides of the central axis. The distance between the straight edge of each second waist circular hole and the edge of the end board is 17 millimeters. The arc diameter of each waist circular hole is 5-6 millimeters. The length of each second waist circular hole is 16.5-19.5 millimeters. The AC copper busbar has functions of complementing a defect of impedance inconsistency at AC output ends of parallel-connected IGBT module of an existing AC copper busbar, settling current non-uniformity caused by impedance inconsistency through re-configuring a current path in a manner of digging holes on one end board of the AC copper busbar, and satisfying an industrial requirement.
Description
Technical field
The present invention relates to a kind of AC copper-line.
Background technology
Along with the fast development of power electronic technology, frequency converter forward Large Copacity develops.At present often adopting multiple IGBT(insulated gate bipolar transistor) module is directly parallel on AC copper-line to improve the power grade of frequency converter.But there is electric current distribution uneven phenomenon in multiple IGBT module parallel, the development of serious restriction big-power transducer.Uneven reason is relevant with the inconsistency of the parameter of IGBT module own on the one hand, and on the other hand and drive singal asynchronous relevant, then to have be exactly that the AC and DC copper bar impedance parameter of the direct parallel connection with IGBT module is inconsistent relevant.
For the existing AC copper-line 1 for three groups of IGBT module in parallel, see Fig. 1 and Fig. 2, described AC copper-line is symmetrical structure, comprises one first end plate 11 and second end plate 12 be fixedly connected with described first end plate 11, and described first end plate 11 adopts one-body molded with described second end plate 12.Described first end plate 11 is round rectangle, the side of described first end plate 11 is used for the ac terminal of three groups of IGBT module in parallel, and the ac terminal of described three groups of IGBT module is arranged on described first end plate 11 respectively by circular hole 111 and 112, circular hole 113 and 114, circular hole 115 and 116.Point-blank, described straight line parallel is in the edge 117 of described first end plate 11 near the side of circular hole 111-116 at the center of circular hole 111-116.Described second end plate 12 is with the rectangle of 90 degree of bendings, and the side of described second end plate 12 is for connecting load, and described load is arranged on described second end plate 12 by circular hole 121 and 122, and the opposite side of described second end plate 12 is fixedly connected with described first end plate 11.
When described AC copper-line 1 and load, three groups of IGBT module are connected and access electric power system, described AC copper-line 1 flows through first-harmonic and is 50Hz and superposition ripple is the alternating current of 2kHz to 4kHz.The stray inductance of described AC copper-line 1 is relevant with the frequency of fundamental current component, and when frequency is only 50Hz, described stray inductance is very little, and negligible, the dead resistance of described AC copper-line 1 becomes the principal element of the current-sharing affecting described AC copper-line 1.The current path be communicated with due to each IGBT module is different, thus causes the unbalanced degree of impedance high, can not reach the effect of current-sharing.
The existing AC copper-line 2 for four groups of IGBT module in parallel, see Fig. 3, substantially identical with AC copper-line 1 structure for three groups of IGBT module in parallel, difference is, the side of the first end plate 21 of AC copper-line 2 is used for the ac terminal of four groups of IGBT module in parallel, and the ac terminal of described four groups of IGBT module is arranged on described first end plate 21 respectively by circular hole 211 and 212, circular hole 213 and 214, circular hole 215 and 216, circular hole 217 and 218.After described AC copper-line 2 is connected with load, four groups of IGBT module, there is the problem that the unbalanced degree of impedance is high equally, have impact on the power grade of frequency converter.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the inconsistent defect of existing AC copper-line output impedance, and the unbalanced degree providing a kind of output impedance is low, process simple AC copper-line.
The present invention is solved the problems of the technologies described above by following technical proposals:
A kind of AC copper-line, the side of an one end plate is used for the ac terminal of three groups of IGBT module in parallel, the ac terminal often organizing IGBT module is arranged on described end plate respectively by two circular holes, is characterized in, described end plate is formed with one first oval hole and two the second oval holes, described first oval hole be centrally located at described end plate on the axis at the edge of the side of described circular hole and the straight flange in described first oval hole perpendicular to described axis, described first oval hole is 23.5 millimeters near the straight flange of described circular hole to the distance of described end plate near the edge of the side of described circular hole, the scope of the diameter of the circular arc on the both sides in described first oval hole is 5 to 6 millimeters, the length of the straight flange in described first oval hole adds that the length of described diameter is less than or equal to one first length and deducts 1 millimeter and be more than or equal to described first length and deduct 4 millimeters, described first length be two circular holes for arranging one group of IGBT module centre-to-centre spacing with for arranging the centre-to-centre spacing sum of two circular holes adjacent in four circular holes of two groups of adjacent IGBT module, two described second oval holes lay respectively at the both sides of described axis, the straight flange in described second oval hole is perpendicular to described axis, described second oval hole is 17 millimeters near the straight flange of described circular hole to the distance of described end plate near the edge of the side of described circular hole, vertical range between the axis perpendicular to described straight flange in described second oval hole and the axis of described AC copper-line equals 1/2 of the length sum of the length of the diameter of the circular arc on the both sides in described first oval hole and the straight flange in described first oval hole and adds a predetermined constant, the scope of described predetermined constant is 13.75 to 15.25 millimeters, the scope of the diameter of the circular arc on the both sides in described second oval hole is 5 to 6 millimeters, the length of the straight flange in described second oval hole adds that the scope of the length of the diameter of the circular arc on the both sides in described second oval hole is 16.5 to 19.5 millimeters.
Described AC copper-line is after being provided with described first oval hole, the second oval hole, shape there occurs change, thus make the path of the electric current flow through also there occurs change, after testing, the unbalanced degree of impedance of described AC copper-line, within 4%, meets the requirement of the unbalanced degree of the impedance of power equipment to AC copper-line.In addition, it should be noted that, the material of described AC copper-line is not merely copper, and those skilled in the art know, the AC copper-line surface for arranging IGBT module also needs through the insulation processing such as zinc-plated, to press.
Preferably, the length of the straight flange in described first oval hole adds that the length of described diameter is less than or equal to described first length and deducts 1 millimeter and be more than or equal to described first length and deduct 3 millimeters.After testing, the unbalanced degree of the impedance of the AC copper-line of the technical program is within 3%.
Preferably, the length of the straight flange in described first oval hole adds that the length of described diameter is less than or equal to described first length and deducts 1 millimeter and be more than or equal to described first length and deduct 2 millimeters.After testing, the unbalanced degree of the impedance of the AC copper-line of the technical program is within 2%.
Preferably, the length of the straight flange in described first oval hole adds that the length of described diameter equals described first length and deducts 1 millimeter.After testing, the length that the unbalanced degree of the impedance of the AC copper-line of the technical program is more better than the straight flange in described first oval hole adds that the length of described diameter is less than or equal to described first length and deducts 1 millimeter and be more than or equal to the technical scheme that described first length deducts 2 millimeters.
Preferably, the length of the straight flange in described second oval hole adds that the scope of the length of the diameter of the circular arc on the both sides in described second oval hole is 18.5 to 19.5 millimeters.After testing, the unbalanced degree of the impedance of the AC copper-line of the technical program is within 3%.
Preferably, the length of the straight flange in described second oval hole adds that the length of the diameter of the circular arc on the both sides in described second oval hole equals 19.5 millimeters.After testing, the unbalanced degree of the impedance of the AC copper-line of the technical program is within 2%.
Preferably, the diameter of the circular arc on the diameter of the circular arc on the both sides in described first oval hole and the both sides in described second oval hole is 6 millimeters.The unbalanced degree of impedance of the AC copper-line of the technical program is minimum.
In addition, the combination in any of above technical scheme also falls within the scope of protection of the present invention.
A kind of AC copper-line, the side of an one end plate is used for the ac terminal of four groups of IGBT module in parallel, and the ac terminal often organizing IGBT module is arranged on described end plate respectively by two circular holes, is characterized in, described end plate is formed with one the 3rd oval hole, described 3rd oval hole be centrally located at described end plate on the axis at the edge of the side of described circular hole and the straight flange in described 3rd oval hole perpendicular to described axis, described 3rd oval hole is 23.5 millimeters near the straight flange of described circular hole to the distance of described end plate near the edge of the side of described circular hole, the scope of the diameter of the circular arc on the both sides in described 3rd oval hole is 5 to 6 millimeters, the length of the straight flange in described 3rd oval hole adds that the length of the arc diameter on described 3rd both sides, oval hole equals the centre-to-centre spacing of two circular holes for arranging one group of IGBT module and 2 times for arranging the centre-to-centre spacing sum of two circular holes adjacent in four circular holes of two groups of adjacent IGBT module.
Described AC copper-line is after being provided with described 3rd oval hole, and shape there occurs change, thus makes the path of the electric current flow through also there occurs change.After testing, the unbalanced degree of the impedance of described AC copper-line meets the requirement of the unbalanced degree of the impedance of power equipment to AC copper-line.
Preferably, the diameter of the circular arc on the both sides in described 3rd oval hole is 6 millimeters.The unbalanced degree of impedance is now minimum.
Positive progressive effect of the present invention is: the present invention is by the mode redistribution current path of borehole on an end plate of AC copper-line, the impedance realizing three groups or four groups IGBT module ac output ends in parallel is consistent, thus solve the inconsistent uneven flow phenomenon brought of impedance, meet industrial requirement.AC copper-line of the present invention also has the advantage that processing is simple, be applicable to batch production.
Accompanying drawing explanation
Fig. 1 is the stereogram of the existing AC copper-line for three groups of IGBT module in parallel.
Fig. 2 is the front view of the existing AC copper-line for three groups of IGBT module in parallel.
Fig. 3 is the front view of the existing AC copper-line for four groups of IGBT module in parallel.
Fig. 4 is the stereogram of the AC copper-line for three groups of IGBT module in parallel of the embodiment of the present invention 1.
Fig. 5 is the front view of the AC copper-line for three groups of IGBT module in parallel of the embodiment of the present invention 1.
The structural representation of AC copper-line when Fig. 6 is the emulation of the embodiment of the present invention 1.
Fig. 7 is the front view of the AC copper-line for four groups of IGBT module in parallel of the embodiment of the present invention 2.
Embodiment
Embodiment 1
See Fig. 4 and Fig. 5, the AC copper-line 1 ' of the present embodiment obtains arrange one first oval hole and two the second oval holes on the first end plate 11 of existing AC copper-line 1 after, and the shape and structure of existing AC copper-line 1 has been illustrated in the introduction, therefore repeat no more, supplement relevant design parameter (AC copper-line 1 ' in figure is identical with described AC copper-line 1 and part that is that marked in fig. 1 and 2 continues to use the Reference numeral in Fig. 1 and Fig. 2) at this.
Described first end plate 11 is being 139 millimeters perpendicular to the length on the direction, axis of described AC copper-line 1 ', and be 40 millimeters being parallel to the length on direction, described axis, thickness is 5 millimeters.The diameter of circular hole 111-116 is 6.5 millimeters, and the centre-to-centre spacing of circular hole 111 and 112, circular hole 113 and 114, circular hole 115 and 116 is 22 millimeters, and the centre-to-centre spacing of circular hole 112 and 113, circular hole 114 and 115 is 28 millimeters.The end face being parallel to described first end plate 11 after described second end plate 12 bends is 80 millimeters being parallel to the length on direction, described axis, and be 40 millimeters perpendicular to the Length x Width on direction, described axis, thickness is 5 millimeters.The diameter of circular hole 121 and 122 is 9 millimeters, and both centre-to-centre spacing is 22 millimeters, and both center is 15 millimeters to the distance in the face 123 ' of confluxing of described second end plate 12.
The following describes the described first oval hole 118 ' of described AC copper-line 1 ' and the position in two described second oval holes 119 ' and size.
See Fig. 4 and Fig. 5, described first oval hole 118 ' be centrally located at described first end plate 21 on the axis at the edge 117 of the side of circular hole 111-116 and the straight flange in described first oval hole 118 ' perpendicular to described axis.Described first oval hole 118 ' is 23.5 millimeters near the straight flange of circular hole 111-116 to the distance at described edge 117.The diameter D of the circular arc on the both sides in described first oval hole 118 '
1be 6 millimeters, the L in described first oval hole 118 '
1length equal one first length and deduct 1 millimeter, wherein, L
1for the length of the straight flange in described first oval hole 118 ' adds described diameter D
1described first length be two circular holes for arranging one group of IGBT module centre-to-centre spacing with for arranging the centre-to-centre spacing of two circular holes adjacent in four circular holes of two groups of adjacent IGBT module, for the present embodiment, described first length equals circular hole 111 and equals 50 millimeters, i.e. the L in described first oval hole 118 ' with the centre-to-centre spacing of circular hole 113
1equal 49 millimeters.
Two described second oval holes 119 ' lay respectively at the both sides of described axis, and the straight flange in described second oval hole 119 ' is perpendicular to described axis.Described second oval hole 119 ' is 17 millimeters near the straight flange of circular hole 111-116 to the distance at the edge 117 of described first end plate 11.Vertical range between the axis perpendicular to described straight flange in described second oval hole 119 ' and the axis of described AC copper-line 1 ' equals the diameter D of the circular arc on the both sides in described first oval hole 118 '
1a predetermined constant is added with 1/2 of the length sum of the straight flange in described first oval hole 118 ', the scope of wherein said predetermined constant is 13.75 to 15.25 millimeters, the predetermined constant value of the present embodiment is 13.75 millimeters, so, the vertical range between the axis perpendicular to described straight flange in the second oval hole 119 ' described in the present embodiment and the axis of described AC copper-line 1 ' equals 38.25 millimeters.The diameter D of the circular arc on the both sides in described second oval hole 119 '
2be 6 millimeters, the L in described second oval hole 119 '
2be 19.5 millimeters, L
2length for the straight flange in described second oval hole 119 ' adds the diameter D of the circular arc on the both sides in described second oval hole 119 '
2.
Those skilled in the art know, not often adopt directly to be linked into the method for electrical network or other electric power system to the unbalanced degree of the impedance detecting AC copper-line in the prior art, this is because this method cost is high, difficulty large, easily affect the operation of miscellaneous equipment.The unbalanced method of the impedance of general detection AC copper-line adopts LCR electric bridge (a kind of use the method for inductance measuring, electric capacity, resistance, impedance of microprocessor technology) to measure, but require higher in view of showing (a kind of instrument for inductance measuring, electric capacity, resistance, impedance) certainty of measurement to LCR, general being difficult to is measured accurately.MAXWELL software (a kind of finite element analysis software is usually used in the analysis of the aspects such as ac/dc magnetic field, electrostatic field and transient electromagnetic field) is adopted to carry out electrostatic field emulation to AC copper-line.
Concrete, the emulation mode of the AC copper-line 1 ' of the present embodiment is: above apply the direct current of 300A as driving source in described face 123 ' of confluxing; The electric current flowing into the IGBT module that circular hole 111-116 is arranged is detected by the mode arranging copper sheet on AC copper-line 1 ', such as, see Fig. 6, circular hole 111-116 pastes a foursquare copper sheet 111 '-116 respectively ', all there is a circular hole identical with described circular hole 111 size at the center of each described copper sheet, copper sheet 111 '-116 ' align with the center of circular hole 111-116 respectively, and copper sheet 111 '-116 ' be not in contact with each other.Like this, described driving source simulates the load in practical application, and the electric current flowing through each copper sheet is the electric current flowing into each IGBT module.Flow through copper sheet 111 '-116 by measuring ' electric current, calculate the unbalanced degree of impedance of AC copper-line 1 ', obtain following result:
Table 1
Wherein, the unbalanced degree of impedance=(flowing through the mean value of the electric current of a copper sheet-the flow through electric current of all copper sheets)/(flowing through the mean value of the electric current of all copper sheets), takes absolute value.
As can be seen from Table 1, as the D in described first oval hole 118 '
1=6 millimeters, L
1=49 millimeters, the D in described second oval hole 119 '
2=6 millimeters, L
2when=19.5 millimeters, the unbalanced degree of impedance of AC copper-line 1 ' is within 2%, illustrate completely different from the current path on existing AC copper-line 1, current path on described AC copper-line 1 ' is subject to the impact in the first oval hole 118 ' and the second oval hole 119 ', be reallocated, make the impedance of the ac output end of three groups of IGBT module in parallel consistent, solve the inconsistent uneven flow phenomenon brought of impedance, meet industrial requirement.
On the basis of AC copper-line 1 ', adjust the D in described first oval hole 118 '
1length, adopt same test environment measurement to flow through copper sheet 111 '-116 ' electric current, the unbalanced degree of the impedance calculated, obtains following result:
Table 2
Associative list 1 and table 2 can be found out, as the D in described first oval hole 118 '
15 to 6 millimeters time, the unbalanced degree of impedance of AC copper-line 1 ', within 3%, can make the impedance of the ac output end of three groups of IGBT module in parallel consistent equally, but D
1effect when=5 millimeters is not as D
1effect when=6 millimeters, and D
1the unbalanced degree of impedance when=4 millimeters has even exceeded 4%, can not ensure that the impedance of the ac output end of three groups of IGBT module in parallel is consistent.
On the basis of AC copper-line 1 ', adjust the L in described first oval hole 118 '
1length, adopt same test environment measurement to flow through copper sheet 111 '-116 ' electric current, the unbalanced degree of the impedance calculated, obtains following result:
Table 3
Associative list 1 and table 3 can be found out, as the L in described first oval hole 118 '
148 millimeters to 49 millimeters time, the unbalanced degree of impedance of AC copper-line 1 ', also within 2%, can reach equally and make the impedance of the ac output end of three groups of IGBT module in parallel consistent.As the L in described first oval hole 118 '
147 millimeters to 49 millimeters time, the unbalanced degree of impedance is within 3%.As the L in described first oval hole 118 '
146 millimeters to 49 millimeters time, the unbalanced degree of impedance is within 4%.But work as L
1the unbalanced degree of impedance when=45 millimeters has even exceeded 4%, can not ensure that the impedance of the ac output end of three groups of IGBT module in parallel is consistent.
On the basis of AC copper-line 1 ', adjust the D in described second oval hole 119 '
2length, adopt same test environment measurement to flow through copper sheet 111 '-116 ' electric current, the unbalanced degree of the impedance calculated, obtains following result:
Table 4
Associative list 1 and table 4 can be found out, as the D in described second oval hole 119 '
25 to 6 millimeters time, the unbalanced degree of impedance of AC copper-line 1 ', within 4%, can make the impedance of the ac output end of three groups of IGBT module in parallel consistent equally, but D
2effect when=5 millimeters is not as D
2effect when=6 millimeters, and D
2the unbalanced degree of impedance when=4 millimeters has exceeded 4%, can not ensure that the impedance of the ac output end of three groups of IGBT module in parallel is consistent.
On the basis of AC copper-line 1 ', adjust the L in described second oval hole 119 '
2length, adopt same test environment measurement to flow through copper sheet 111 '-116 ' electric current, the unbalanced degree of the impedance calculated, obtains following result:
Table 5
Associative list 1 and table 5 can be found out, as the L in described second oval hole 119 '
218.5 millimeters to 19.5 millimeters time, the unbalanced degree of impedance of AC copper-line 1 ' can ensure within 3%.As the L in described second oval hole 119 '
216.5 millimeters to 19.5 millimeters time, the unbalanced degree of impedance is within 4%.But work as L
2when being less than 16.5 millimeters, the unbalanced degree of impedance has exceeded 4%, can not ensure that the impedance of the ac output end of three groups of IGBT module in parallel is consistent.
In sum, D
1at 5 millimeters to 6 millimeters, L
1at 46 millimeters to 49 millimeters, D
2at 5 millimeters to 6 millimeters and L
216.5 millimeters to 19.5 millimeters time, the unbalanced degree of impedance of AC copper-line 1 ' is within 4%.
Further by L in above-mentioned scope
1be adjusted to 47 millimeters to 49 millimeters, and/or, L
2when being adjusted to 18.5 millimeters to 19.5 millimeters, the unbalanced degree of impedance of AC copper-line 1 ' is within 3%.
Again in above-mentioned scope further by D
1be adjusted to 6 millimeters, and/or, L
1be adjusted to 48 millimeters to 49 millimeters, and/or, D
2be adjusted to 6 millimeters, and/or, L
2when being adjusted to 19.5 millimeters, the unbalanced degree of impedance of AC copper-line 1 ' is within 2%.
Wherein most preferredly be combined as D
1=6 millimeters, L
1=49 millimeters, and/or, D
2=6 millimeters, and/or, L
2=19.5 millimeters, the unbalanced degree of impedance is now minimum.
As can be seen from the present embodiment, the present invention is by the mode of borehole on existing AC copper-line, and redistribution current path, makes the impedance of each ac output end of IGBT module in parallel consistent, have good practical function.
Embodiment 2
See Fig. 7, the AC copper-line 2 ' of the present embodiment obtains arrange one the 3rd oval hole 23 ' on the first end plate 21 of existing AC copper-line 2 after, and the shape and structure of existing AC copper-line 2 has been illustrated in the introduction, therefore repeat no more, supplement relevant design parameter (part that the AC copper-line 2 ' in figure is identical with described AC copper-line 2 continues to use the Reference numeral in Fig. 3) at this.
Described first end plate 21 is being 189 millimeters perpendicular to the length on the direction, axis of described AC copper-line 2 '.Described 3rd oval hole 23 ' be centrally located at described first end plate 21 on the axis at the edge 219 of the side of circular hole 211-218 and the straight flange in described 3rd oval hole 23 ' perpendicular to described axis.Described 3rd oval hole 23 ' is 23.5 millimeters near the straight flange of circular hole 211-218 to the distance at described edge 219, the scope of the diameter of the circular arc on described 3rd both sides, oval hole 23 ' is 5 to 6 millimeters, the length of the straight flange in described 3rd oval hole 23 ' adds that the length of the arc diameter on described 3rd both sides, oval hole 23 ' equals the centre-to-centre spacing of two circular holes for arranging one group of IGBT module and 2 times for arranging the centre-to-centre spacing sum of two circular holes adjacent in four circular holes of two groups of adjacent IGBT module, namely the centre-to-centre spacing of circular hole 212 and circular hole 216 is equaled, namely equal 100 millimeters.
MAXWELL software is adopted to carry out electrostatic field emulation to the AC copper-line 2 ' of the present embodiment, emulation mode is with embodiment 1, current path on described AC copper-line 2 ' is subject to the impact in the 3rd oval hole 23 ', be reallocated, make the impedance of the ac output end of four groups of IGBT module in parallel consistent, solve the inconsistent uneven flow phenomenon brought of impedance, concrete emulation mode is similar to the AC copper-line 1 ' in embodiment 1 with result, does not repeat them here.
Wherein, when the diameter of the circular arc on the both sides in described 3rd oval hole 23 ' is 6 millimeters, the unbalanced degree of impedance is minimum.
Although the foregoing describe the specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, protection scope of the present invention is defined by the appended claims.Those skilled in the art, under the prerequisite not deviating from principle of the present invention and essence, can make various changes or modifications to these execution modes, but these change and amendment all falls into protection scope of the present invention.
Claims (9)
1. an AC copper-line, the side of an one end plate is used for the ac terminal of three groups of IGBT module in parallel, the ac terminal often organizing IGBT module is arranged on described end plate respectively by two circular holes, it is characterized in that, described end plate is formed with one first oval hole and two the second oval holes;
Described first oval hole be centrally located at described end plate on the axis at the edge of the side of described circular hole and the straight flange in described first oval hole perpendicular to described axis, described first oval hole is 23.5 millimeters near the straight flange of described circular hole to the distance of described end plate near the edge of the side of described circular hole, the scope of the diameter of the circular arc on the both sides in described first oval hole is 5 to 6 millimeters, the length of the straight flange in described first oval hole adds that the length of described diameter is less than or equal to one first length and deducts 1 millimeter and be more than or equal to described first length and deduct 4 millimeters, described first length be two circular holes for arranging one group of IGBT module centre-to-centre spacing with for arranging the centre-to-centre spacing sum of two circular holes adjacent in four circular holes of two groups of adjacent IGBT module,
Two described second oval holes lay respectively at the both sides of described axis, the straight flange in described second oval hole is perpendicular to described axis, described second oval hole is 17 millimeters near the straight flange of described circular hole to the distance of described end plate near the edge of the side of described circular hole, vertical range between the axis perpendicular to described straight flange in described second oval hole and the axis of described AC copper-line equals 1/2 of the length sum of the length of the diameter of the circular arc on the both sides in described first oval hole and the straight flange in described first oval hole and adds a predetermined constant, the scope of described predetermined constant is 13.75 to 15.25 millimeters, the scope of the diameter of the circular arc on the both sides in described second oval hole is 5 to 6 millimeters, the length of the straight flange in described second oval hole adds that the scope of the length of the diameter of the circular arc on the both sides in described second oval hole is 16.5 to 19.5 millimeters.
2. AC copper-line as claimed in claim 1, is characterized in that, the length of the straight flange in described first oval hole adds that the length of described diameter is less than or equal to described first length and deducts 1 millimeter and be more than or equal to described first length and deduct 3 millimeters.
3. AC copper-line as claimed in claim 2, is characterized in that, the length of the straight flange in described first oval hole adds that the length of described diameter is less than or equal to described first length and deducts 1 millimeter and be more than or equal to described first length and deduct 2 millimeters.
4. AC copper-line as claimed in claim 3, it is characterized in that, the length of the straight flange in described first oval hole adds that the length of described diameter equals described first length and deducts 1 millimeter.
5. AC copper-line as claimed in claim 1, it is characterized in that, the length of the straight flange in described second oval hole adds that the scope of the length of the diameter of the circular arc on the both sides in described second oval hole is 18.5 to 19.5 millimeters.
6. AC copper-line as claimed in claim 5, it is characterized in that, the length of the straight flange in described second oval hole adds that the length of the diameter of the circular arc on the both sides in described second oval hole equals 19.5 millimeters.
7. as the AC copper-line in claim 1-6 as described in any one, it is characterized in that, the diameter of the circular arc on the diameter of the circular arc on the both sides in described first oval hole and the both sides in described second oval hole is 6 millimeters.
8. an AC copper-line, the side of an one end plate is used for the ac terminal of four groups of IGBT module in parallel, and the ac terminal often organizing IGBT module is arranged on described end plate respectively by two circular holes, it is characterized in that, described end plate is formed with one the 3rd oval hole;
Described 3rd oval hole be centrally located at described end plate on the axis at the edge of the side of described circular hole and the straight flange in described 3rd oval hole perpendicular to described axis, described 3rd oval hole is 23.5 millimeters near the straight flange of described circular hole to the distance of described end plate near the edge of the side of described circular hole, the scope of the diameter of the circular arc on the both sides in described 3rd oval hole is 5 to 6 millimeters, the length of the straight flange in described 3rd oval hole adds that the length of the arc diameter on described 3rd both sides, oval hole equals the centre-to-centre spacing of two circular holes for arranging one group of IGBT module and 2 times for arranging the centre-to-centre spacing sum of two circular holes adjacent in four circular holes of two groups of adjacent IGBT module.
9. AC copper-line as claimed in claim 8, it is characterized in that, the diameter of the circular arc on the both sides in described 3rd oval hole is 6 millimeters.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410048961.XA CN104332787B (en) | 2014-02-12 | 2014-02-12 | AC copper-line |
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|---|---|---|---|
| CN201410048961.XA CN104332787B (en) | 2014-02-12 | 2014-02-12 | AC copper-line |
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| CN104332787A true CN104332787A (en) | 2015-02-04 |
| CN104332787B CN104332787B (en) | 2017-01-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109309301A (en) * | 2017-07-27 | 2019-02-05 | 中航光电科技股份有限公司 | A kind of conductive terminal and its crimp |
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| US20110308834A1 (en) * | 2010-06-18 | 2011-12-22 | Fuji Electric Holdings Co., Ltd. | Laminated bus bar |
| CN203423609U (en) * | 2013-09-06 | 2014-02-05 | 上海电气集团股份有限公司 | AC outlet wire bar |
| CN203734086U (en) * | 2014-02-12 | 2014-07-23 | 上海新时达电气股份有限公司 | AC copper bar |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110308834A1 (en) * | 2010-06-18 | 2011-12-22 | Fuji Electric Holdings Co., Ltd. | Laminated bus bar |
| CN203423609U (en) * | 2013-09-06 | 2014-02-05 | 上海电气集团股份有限公司 | AC outlet wire bar |
| CN203734086U (en) * | 2014-02-12 | 2014-07-23 | 上海新时达电气股份有限公司 | AC copper bar |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109309301A (en) * | 2017-07-27 | 2019-02-05 | 中航光电科技股份有限公司 | A kind of conductive terminal and its crimp |
| CN109309301B (en) * | 2017-07-27 | 2020-10-27 | 中航光电科技股份有限公司 | Conductive terminal and crimping mold thereof |
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| CN104332787B (en) | 2017-01-04 |
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