CN204577247U - Be applied to the film capacitor radiator structure of vehicle inverter - Google Patents
Be applied to the film capacitor radiator structure of vehicle inverter Download PDFInfo
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- CN204577247U CN204577247U CN201420866900.XU CN201420866900U CN204577247U CN 204577247 U CN204577247 U CN 204577247U CN 201420866900 U CN201420866900 U CN 201420866900U CN 204577247 U CN204577247 U CN 204577247U
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Abstract
The utility model discloses a kind of film capacitor radiator structure being applied to vehicle inverter, the positive and negative busbar that described film capacitor comprises film fuse, is connected with film fuse both positive and negative polarity end face, described film fuse and positive and negative busbar are located in the open shell in bottom, described shell is located on coldplate, and described positive and negative busbar is dispelled the heat by coldplate; All the other whole heating faces of described film fuse or remainder heating face are coated with heat conduction busbar, this heat conduction busbar is extended to form by positive busbar and/or negative busbar, positive and negative busbar and between heat conduction busbar and outer casing inner wall, busbar extension and all fill potting compound between heat conduction busbar and film fuse.The utility model makes the heating of film fuse and busbar effectively conduct, and fuse effectively can completely cut off ambient temperature higher than 100 degree and the homogeneous temperature on each surface, therefore can give full play to the current capacity of electric capacity.
Description
Technical field
The utility model is relevant with vehicle electric power converter technique, specifically belongs to a kind of film capacitor radiator structure being applied to vehicle inverter.
Background technology
Electric automobile enters automobile market because of the advantage such as fuel-economizing, environmental protection, and be subject to increasing attention, wherein electric machine controller (inverter) kernel component that is electric automobile, it and motor together constitute " engine " of new-energy automobile, have tremendous influence to the Cost And Performance of electric automobile.
Kernel component in inverter---capacitor, it occupies the cost of inverter more than 20% and the volume of more than 30%, therefore the design quality of capacitor greatly have impact on performance and the power density of whole inverter, in the eurypalynous capacitor of crowd, more commonly film capacitor and electrolytic capacitor, and film capacitor replaces traditional electrolytic capacitor by large-scale application in electric automobile just gradually because parasitic parameter is little, temperature frequency characteristic is good, have the features such as self-healing property.
As Fig. 1 a, shown in Fig. 1 b, film fuse is reeled by the polyacrylic film 1 of one side evaporated metal layer 2 and forms, be roughly the rectangular structure with fillet, the heat conduction of its plastic film itself is also bad, and the evaporation layer above plastic film is metal level, this evaporation layer has good thermal conductivity, thin-film capacitor entirety is made to have heat conducting nonisotropic, heat conducts out than the axial direction be easier to along winding, that is Fig. 1 a, in Fig. 1 b, thermal conductivity along Y-axis will far above the thermal conductivity along X-axis and Z axis, the wherein wireline reel of Y-axis and plastic film, when the wireline reel of plastic film is parallel to horizontal plane, with the short transverse of capacitor core for Z axis, perpendicular to YZ plane is X-axis.The positive busbar of thin-film capacitor welds with the end face being parallel to XZ plane in fuse, and negative busbar welds with the other end being parallel to XZ plane in fuse, and namely positive and negative busbar is all perpendicular to the wireline reel of fuse.
In order to prevent from external moisture or air from entering causing capacitor to be corroded and with the insulation of external refrigeration plate, conventional films capacitor as shown in Figure 2, capacitor core 3 and positive and negative busbar 4,5 are wrapped up by the plastic casing 7 of epoxy resin 6 potting compound of 3-4mm and 2mm, because the thermal conductivity of epoxy resin 6 used and plastic casing 7 only has 2-3W/mK, therefore traditional film capacitor has higher thermal-conduction resistance, radiating effect extreme difference, the heat that fuse and busbar distribute is difficult to conduction out.
Although each face of film fuse is all wrapped up by epoxy resin 6 and shell 7, because of the difference of cooling condition and environment, the temperature in each face still differs greatly.The generally vertical placement of traditional film fuse, namely the wireline reel of fuse is perpendicular to coldplate 8, positive and negative busbar 4,5 is parallel to coldplate 8, be convenient to heat radiation like this, due to the both positive and negative polarity of capacitor from coldplate 8 apart from different, so higher away from the electrode place fuse temperature of coldplate 8, in addition, the ambient temperature of other several surperficial position of fuse is not identical yet, some surfaces adjacent connection IGBT or high-tension battery pin and additionally heated, as the top etc. of film fuse, therefore the Temperature Distribution of whole capacitor core is extremely unbalanced.Current capacity in view of film capacitor depends on the hottest spot temperature of whole film fuse, therefore capacitive energy is difficult to play, and current capacity is greatly limited.
In electric/hybrid automobile, the higher harmonic current absorbing vehicle-mounted inverter generation is responsible for by film capacitor, and the inverter of a 50kW can produce the harmonic current of more than 100A.Especially in hybrid power system, the ambient temperature peak value of inverter can reach 105 degree, peak value water-cooled temperature can reach 90 degree, under the impact of the heater members such as inverter internal busbar, the ambient temperature peak value of capacitor can reach more than 120 degree, the maximum temperature tolerated due to the polypropylene screen of capacitor film fuse only has 105 degree, so time capacitor do not allow the operation that powers on.In fact, even if the ambient temperature of capacitor is lower than 100 degree, owing to being limited to high thermal resistance and the temperature distributing disproportionation of film capacitor, traditional capacitance is also difficult to bear the heat power consumption that electric current causes, and therefore these usually become the hot bottleneck problem of automobile-used high-power inverter.
Not damaged in order to make capacitor normally work, a kind of general method is the capacitance (higher than system ripple demand) significantly increasing capacitor, reduce the current density under capacitor unit capacitance and power consumption, but this significantly can increase volume and the cost of electric capacity, especially for hybrid vehicle, it all has higher requirement to the volume of inverter and cost, and this is obviously difficult to be accepted.Another method arranges capacitor temperature transducer, carries out power deratng when its excess temperature, cause the Power output of whole power drive system by the hot bottleneck of capacitor like this limit, reduce inverter performance.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of film capacitor radiator structure being applied to vehicle inverter, the thermal resistance of capacitor can be reduced, solve inner core and busbar heat production be difficult to shed and core material heatproof low between contradiction, effectively avoid whole capacitor core temperature distributing disproportionation to weigh, and improve the ability of capacitor.
For solving the problems of the technologies described above, the film capacitor radiator structure of what the utility model provided be applied to vehicle inverter, the positive and negative busbar that described film capacitor comprises film fuse, is connected with film fuse both positive and negative polarity end face, described film fuse and positive and negative busbar are located in the open shell in bottom, described shell is located on coldplate, and described positive and negative busbar is dispelled the heat by coldplate; All the other whole heating faces of described film fuse or remainder heating face are coated with heat conduction busbar, and this heat conduction busbar is extended to form by positive busbar and/or negative busbar.
When the positive and negative busbar of film fuse is vertical with coldplate, described positive and negative busbar is bent to form busbar extension respectively near one end of coldplate, described two busbar extensions are contacted with coldplate by insulating paper, or two busbar extensions are stacked and contacted by insulating paper therebetween, the busbar extension being positioned at bottom is contacted with coldplate by insulating paper.
Wherein a kind of preferred structure is that described positive busbar extends to form positive busbar extension near one end of coldplate to the direction near negative busbar, and described negative busbar extends to form negative busbar extension near one end of coldplate to the direction near positive busbar; Described positive busbar extending part is above negative busbar extension and contacted with negative busbar extension by insulating paper, and negative busbar extension is contacted with coldplate by insulating paper; Or described negative busbar extending part is above positive busbar extension and contacted with positive busbar extension by insulating paper, positive busbar extension is contacted with coldplate by insulating paper.
Wherein another preferred structure is, described positive busbar extends to form positive busbar extension near one end of coldplate to the direction near negative busbar, and described negative busbar extends to form negative busbar extension near one end of coldplate to the direction near positive busbar; Described positive busbar extension and negative busbar extension be not in contact with each other mutually or the end of positive busbar extension by the ends contact of insulating paper and negative busbar extension, described positive busbar extension is all contacted with coldplate by insulating paper with negative busbar extension.
Wherein another kind of preferred structure is, described positive busbar extends to form positive busbar extension near one end of coldplate to the direction away from negative busbar, described negative busbar extends to form negative busbar extension near one end of coldplate to the direction away from positive busbar, and described positive busbar extension is all contacted with coldplate by insulating paper with negative busbar extension.
Wherein another kind of preferred structure is, described positive busbar extends to form positive busbar extension near one end of coldplate to the direction near negative busbar, negative busbar extends to form negative busbar extension near one end of coldplate to the direction away from positive busbar, or positive busbar extends to form positive busbar extension near one end of coldplate to the direction away from negative busbar, negative busbar extends to form negative busbar extension near one end of coldplate to the direction near positive busbar, described positive busbar extension is not contacted with negative busbar extension or is contacted by insulating paper, the two is all contacted with coldplate by insulating paper.
When the positive and negative busbar of film fuse is parallel with coldplate, the busbar be connected with film fuse upper surface extends to along film fuse side bottom film fuse and is also outwards bent to form busbar extension, described busbar extension and do not contact with the busbar that film fuse lower surface connects or contacted by insulating paper, the two is all contacted with coldplate by insulating paper; Or, the busbar be connected with film fuse upper surface to extend to along film fuse side bottom film fuse and bends inwards and forms busbar extension, described busbar extending part is below the busbar connected with film fuse lower surface and contacted by insulating paper therebetween, and busbar extension is contacted with coldplate by insulating paper simultaneously.
In said structure, between described positive and negative busbar and outer casing inner wall, between heat conduction busbar and film fuse, between heat conduction busbar and outer casing inner wall, between film fuse and busbar extension, all fill potting compound.
Preferably, described coldplate is cooled plate, and described positive and negative busbar and heat conduction busbar are copper bar.
Usefulness of the present utility model is:
1) heat that film fuse both positive and negative polarity produces all can conduct to outside electric capacity by positive and negative busbar, simultaneously because other end face of film fuse can arrange heat conduction busbar as required, the heat that film fuse other position except both positive and negative polarity is produced can be guided on coldplate by heat conduction busbar nearby;
2) because each surface of film fuse is based on the basal temperature (lower than 90 degree) of same coldplate (cooled plate), therefore fuse effectively can completely cut off the ambient temperature higher than 100 degree, and the uniformity of temperature profile on each surface of fuse, ensure that film fuse gives full play to its current capacity;
3) because the thermal resistance of film fuse to coldplate reduces greatly, capacitor allows higher current density, therefore capacitance is greatly reduced, and volume and cost all can effectively reduce.
Accompanying drawing explanation
Fig. 1 a is the front view of film fuse;
Fig. 1 b is the end view of film fuse;
Fig. 2 is the radiator structure schematic diagram of traditional film capacitor;
Fig. 3 a is that the radiator structure of the utility model first embodiment is at the cutaway view perpendicular to X-direction;
Fig. 3 b is the cutaway view of radiator structure at A-A place of the utility model first embodiment;
Fig. 3 c is copper bar bending sketch map in the radiator structure of the utility model first embodiment;
Fig. 4 a is that the radiator structure of the utility model second embodiment is at the cutaway view perpendicular to X-direction;
Fig. 4 b is the cutaway view of radiator structure at B-B place of the utility model second embodiment;
Fig. 4 c is copper bar bending sketch map in the radiator structure of the utility model second embodiment;
Fig. 5 a is that the radiator structure of the utility model the 3rd embodiment is at the cutaway view perpendicular to X-direction;
Fig. 5 b is the cutaway view of radiator structure at C-C place of the utility model the 3rd embodiment;
Fig. 5 c is copper bar bending sketch map in the radiator structure of the utility model the 3rd embodiment;
Fig. 6 is the schematic diagram of another kind of busbar extension in the radiator structure of the utility model the 3rd embodiment;
Fig. 7 is a kind of schematic diagram of the radiator structure of the utility model the 4th embodiment;
Fig. 8 is the another kind of schematic diagram of the radiator structure of the utility model the 4th embodiment;
Fig. 9 is the schematic diagram of the radiator structure of the utility model the 5th embodiment;
Figure 10 is the heat conduction schematic diagram of radiator structure of the present utility model.
Wherein description of reference numerals is as follows:
1 is plastic film; 2 is metal level; 3 is capacitor core; 4 is positive busbar; 5 is negative busbar; 6 is epoxy resin; 7 is shell; 8 is coldplate;
10 is film fuse; 11 is shell; 12 is negative copper bar; 13 is positive copper bar; 14 is cooled plate; 15 is epoxy resin; 16 is insulating paper; 17 is hot environment.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
What the utility model provided is applied to the film capacitor radiator structure of vehicle inverter in hot environment 17, described film capacitor comprises film fuse 10 and positive and negative busbar, described film fuse 10 is formed by plastic film 1 coiling centered by a wireline reel (Y-axis), and plastic film 1 one side evaporation one metal level 2, described positive and negative busbar is connected with two end faces perpendicular to wireline reel in film fuse 10 respectively.Film fuse 10 and positive and negative busbar are located in the open shell 11 in bottom, and described shell 11 is located on coldplate, and described positive and negative busbar is dispelled the heat by coldplate.
In order to make the both positive and negative polarity of capacitor and coldplate apart from identical, core film takes horizontal mode to place, the i.e. wireline reel (Y-axis) of film fuse 10 parallel with coldplate (the positive and negative busbar of film fuse 10 is vertical with coldplate), positive and negative busbar is bent to form busbar extension respectively near one end of coldplate, two kinds of busbar extensions are contacted with coldplate by insulating paper 16, or two kinds of busbar extensions are stacked and contacted by insulating paper 16 therebetween, the busbar extension being positioned at bottom is contacted with coldplate by insulating paper 16;
The whole end face or the portion end surface that are parallel to wireline reel in film fuse 10 are coated with heat conduction busbar, between positive and negative busbar and shell 11 inwall, between heat conduction busbar and film fuse 10, between heat conduction busbar and shell 11 inwall, all fill potting compound between film fuse 10 and busbar extension.
In each of the embodiments described below, positive and negative busbar is for negative copper bar 12 and positive copper bar 13 (thermal conductivity is for 390W/mK), heat conduction busbar is also copper bar, is certainly not limited thereto, and other thermal conductivity is high and conductance is high, and (thermal conductivity is greater than 30W/mK, resistivity is less than 0.02 Ω * mm
2/ m) material.
In the utility model first embodiment, as shown in Figure 3 a, the positive copper bar 13 at capacitor anode place extends to form positive copper bar extension near one end of coldplate to the direction near negative copper bar 12, the negative copper bar 12 at capacitor anode place extends to form negative copper bar extension near one end of coldplate to the direction near positive copper bar 13, positive copper bar extending part is also contacted with negative copper bar extension by insulating paper 16 above negative copper bar extension, and negative copper bar extension is contacted with coldplate by insulating paper 16.Certainly, the position of positive copper bar extension and negative copper bar extension can exchange, and namely negative copper bar extending part is contacted with positive copper bar extension by insulating paper 16 above positive copper bar extension, and positive copper bar extension passes through insulating paper 16 and contact with coldplate.
Each end face of definition film fuse 10, in Fig. 3 a, in Y direction, its right end face is the right side of film fuse 10, the left side of relative with right side is film fuse 10, it Z-direction is the lower surface of film fuse 10 near the end face of coldplate, the upper surface of relative with lower surface is film fuse 10, in Fig. 3 b, in X-direction, its right end face is the rear end face of film fuse 10, the front end face of relative with rear end face is film fuse 10.In the present embodiment, positive copper bar 13 is except being welded on the left side of film fuse 10 and being formed except positive copper bar extension below film fuse 10, also bend on the front end face extending and cover film fuse 10 and form heat conduction busbar, simultaneously, negative copper bar 12 is except being welded on the right side of film fuse 10 and being formed except negative copper bar extension below film fuse 10, also bending extends the rear end face and upper surface formation heat conduction busbar that cover film fuse 10, as shown in Fig. 3 b, Fig. 3 c.In figure 3 c, left side is the shape before negative copper bar 12 bending, represented by dotted arrows bending track, the wherein right side of dotted portion cover film fuse 10, the upper surface of dotted line upper section cover film fuse 10, the lower surface of dotted line inferior portion cover film fuse 10, the rear end face of dotted line right part cover film fuse 10, and right side is the shape that positive copper bar 13 extends to form, the wherein left side of dotted portion cover film fuse 10, the front end face of dotted line left part cover film fuse 10, the lower surface of dotted line inferior portion cover film fuse 10.Certainly, the heat conduction busbar of each end face is not limited to aforementioned manner, and the heat conduction busbar of certain end face both can extend bending by positive copper bar 13 and form, and also can extend bending by negative copper bar 12 and form, those skilled in the art can combination in any.
Positive copper bar extension and negative copper bar extension are formed with perforate to carry out embedding, between positive and negative copper bar 13,12 and shell 11 inwall, between heat conduction busbar and film fuse 10, between heat conduction busbar and shell 11 inwall, between film fuse 10 and copper bar extension, all fill potting compound (as epoxy resin 15), ensure that film fuse 10 moisture completely cuts off.
In the utility model second embodiment, as shown in fig. 4 a, positive copper bar 13 extends to form positive copper bar extension near one end of coldplate to the direction near negative copper bar 12, negative copper bar 12 extends to form negative copper bar extension near one end of coldplate to the direction near positive copper bar 13, leave a gap between the end of positive copper bar extension and the end of negative copper bar extension, positive copper bar extension is all contacted with coldplate by insulating paper 16 with negative copper bar extension.Certainly, the end of positive copper bar extension also can by the ends contact of insulating paper 16 with negative copper bar extension, and both guarantees are isolated.
In the present embodiment, positive copper bar 13 is except being welded on the left side of film fuse 10 and being formed except positive copper bar extension below film fuse 10, also bend on the front end face extending and cover film fuse 10 and form heat conduction busbar, simultaneously, negative copper bar 12 is except being welded on the right side of film fuse 10 and being formed except negative copper bar extension below film fuse 10, also bending extends the rear end face and upper surface formation heat conduction busbar that cover film fuse 10, as Fig. 4 b, shown in Fig. 4 c, certainly, the heat conduction busbar of each end face is not limited to aforementioned manner, the heat conduction busbar of certain end face both can extend bending by positive copper bar 13 and form, also can extend bending by negative copper bar 12 to form, those skilled in the art can combination in any.
The present embodiment can carry out embedding by the clearance for insulation between positive copper bar extension and negative copper bar extension, perforate can certainly carry out embedding, between positive and negative copper bar 13,12 and shell 11 inwall, between heat conduction busbar and film fuse 10, between heat conduction busbar and shell 11 inwall, between film fuse 10 and copper bar extension, all fill potting compound (as epoxy resin 15), ensure that film fuse 10 moisture completely cuts off.
In the utility model the 3rd embodiment, as shown in Figure 5 a, positive copper bar 13 extends to form positive copper bar extension near one end of coldplate to the direction away from negative copper bar 12, negative copper bar 12 extends to form negative copper bar extension near one end of coldplate to the direction away from positive copper bar 13, and positive copper bar extension is all contacted with coldplate by insulating paper 16 with negative copper bar extension.
In the present embodiment, positive copper bar 13 is except being welded on the left side of film fuse 10 and being formed except positive copper bar extension below film fuse 10, also bend on the front end face extending and cover film fuse 10 and form heat conduction busbar, simultaneously, negative copper bar 12 is except being welded on the right side of film fuse 10 and being formed except negative copper bar extension below film fuse 10, also bending extends the rear end face and upper surface formation heat conduction busbar that cover film fuse 10, as Fig. 5 b, shown in Fig. 5 c, certainly, the heat conduction busbar of each end face is not limited to aforementioned manner, the heat conduction busbar of certain end face both can extend bending by positive copper bar 13 and form, also can extend bending by negative copper bar 12 to form, those skilled in the art can combination in any.
In the present embodiment, positive copper bar extension and negative copper bar extension oppositely extend, the bottom opening completely of film fuse 10, can as embedding mouth, between positive and negative copper bar 13,12 and shell 11 inwall, between heat conduction busbar and film fuse 10, between heat conduction busbar and shell 11 inwall, between film fuse 10 and copper bar extension, all fill potting compound (as epoxy resin 15), ensure that film fuse 10 moisture completely cuts off.
Certainly, positive copper bar extension and negative copper bar extension also can extend in the same way, as positive copper bar 13 extends to form positive copper bar extension near one end of coldplate to the direction near negative copper bar 12, and negative copper bar 12 extends to form negative copper bar extension to the direction away from positive copper bar 13 near one end of coldplate, as shown in Figure 6, or positive copper bar 13 extends to form positive copper bar extension near one end of coldplate to the direction away from negative copper bar 12, negative copper bar 12 extends to form negative copper bar extension near one end of coldplate to the direction near positive copper bar 13, the two is all contacted with coldplate by insulating paper 16.This structure to those skilled in the art, can be expected easily by aforementioned three embodiments.Positive copper bar extension and negative copper bar extension can not contact to leave embedding mouth and carry out embedding, or positive copper bar extension contacts by insulating paper 16 is isolated with negative copper bar extension, only needs perforate on the positive copper bar extension below film fuse 10 or negative copper bar extension to carry out embedding to carry out embedding.
Except several situation above, film fuse 10 also can take vertical mode to place, the i.e. wireline reel (Y-axis) of film fuse 10 vertical with coldplate (the positive and negative busbar of film fuse 10 is parallel with coldplate), now positive copper bar 13 is connected with film fuse 10 lower surface or bears copper bar 12 and is connected with film fuse 10 lower surface.In following 4th, the 5 two embodiment, be connected (namely the positive pole of capacitor is in below) for positive copper bar 13 with film fuse 10 lower surface and be explained.
In the utility model the 4th embodiment, as shown in Figure 7, the negative copper bar 12 be connected with film fuse 10 upper surface extends to along film fuse 10 side bottom film fuse 10 and is also outwards bent to form negative copper bar extension, this negative copper bar extension and do not contact with the positive copper bar 13 that film fuse 10 lower surface connects or contacted by insulating paper 16, the two is all contacted with coldplate by insulating paper 16.In the present embodiment, negative copper bar 12 extends to film fuse 10 and all forms the heat conduction busbar in wrap film fuse 10 sidepiece heating face in (or part) side, it to continue to extend to bottom film fuse 10 and is outwards bent to form some negative copper bar extensions, as shown in Figure 7, Figure 8, negative copper bar 12 can be extended to any side by those skilled in the art, can determine the quantity of negative copper bar extension as required simultaneously.Certainly, the heat conduction busbar in portion sides heating face also can be bent by positive copper bar 13 and form.
5th embodiment of the present utility model, as shown in Figure 9, the negative copper bar 12 be connected with film fuse 10 upper surface to extend to along film fuse 10 side bottom film fuse 10 and bends inwards and forms negative copper bar extension, this negative copper bar extending part is below the positive copper bar 13 connected with film fuse 10 lower surface and contacted by insulating paper 16 therebetween, and negative copper bar 12 extension is contacted with coldplate by insulating paper 16 simultaneously.The heat conduction busbar that negative copper bar 12 extends bending can cover all sidepieces heating face, can certainly sidepiece heating face, cover part, the heat conduction busbar that all the other sidepieces heating face extends bending by positive copper bar 13 wraps up, and concrete bending mode those skilled in the art of heat conduction busbar can arrange arbitrarily.
In the above-described embodiments, coldplate is cooled plate 14, can certainly be the coldplate of other form, as ventilation panel etc.
In the utility model, heat conduction busbar is bent by positive copper bar 13 and/or negative copper bar 12 to form, and is overall busbar form, but be not limited thereto, also can adopt separate form, namely positive and negative copper bar is only bent to form copper bar extension, heat conduction busbar is absolute construction, then is connected with positive and negative copper bar.
In addition, in the above-described embodiments, the arbitrary surfaces of film fuse 10 all has the busbar of heat conduction, this is best form, ambient temperature difference residing for film fuse 10 surface can certainly arrange the mulching method of busbar, the surface not high in ambient temperature can not cover heat conduction busbar, but certainly has copper bar extension bottom the film fuse 10 of coldplate, with the heat that the busbar of conducting membranes fuse 10 top and/or sidepiece spreads out of, and cool each parcel face copper bar.
In above-described embodiment and accompanying drawing 3a, 4a, 5a, although define positive copper bar 13 in the left side of film fuse 10, negative copper bar 12 is on the right side of film fuse 10, but because film fuse 10 is nonpolarity, so film fuse 10 has the characteristic of complete electrical equivalent perpendicular to two end faces of wireline reel, the polarity of the busbar be namely connected with film fuse about 10 two ends can be exchanged, and this is apparent for those skilled in the art, therefore in this explanation.
In the utility model, film fuse 10 is surrounded by potting compound, ensure that the moisture-proof of electric capacity.The heating of capacitor thin film fuse 10 and copper bar is all drawn outside capacitance body to coldplate place by the copper bar of high heat conductance (390W/mK), copper bar extends arbitrarily other surface of parcel fuse simultaneously, the heat on wrapped surface is guided to bottom coohng by copper bar nearby, and heat dissipation path as shown in Figure 10.Because each surface of fuse is based on same cooling water basal temperature (lower than 90 degree), therefore fuse effectively can completely cut off the ambient temperature higher than 100 degree, and the homogeneous temperature on each surface of fuse, fuse can give full play to its current capacity.The utility model greatly reduces the thermal resistance of film fuse 10 to coldplate, and allow electric capacity to have higher current density, therefore capacitance is greatly reduced, volume and cost all can effectively reduce.
Be described in detail the utility model by specific embodiment above, this embodiment is only preferred embodiment of the present utility model, and it not limits the utility model.When not departing from the utility model principle; those of ordinary skill in the art by other embodiments all that the modes such as any amendment, equivalent replacement, improvement obtain, all should be considered as in the technology category protected at the utility model under the prerequisite not making creative work.
Claims (11)
1. be applied to a film capacitor radiator structure for vehicle inverter, the positive and negative busbar that described film capacitor comprises film fuse, is connected with film fuse both positive and negative polarity end face, it is characterized in that,
Described film fuse and positive and negative busbar are located in the open shell in bottom, and described shell is located on coldplate, and described positive and negative busbar is dispelled the heat by coldplate;
All the other whole heating faces of described film fuse or remainder heating face are coated with heat conduction busbar, and this heat conduction busbar is extended to form by positive busbar and/or negative busbar.
2. the film capacitor radiator structure being applied to vehicle inverter according to claim 1, it is characterized in that, when the positive and negative busbar of described film fuse is vertical with coldplate, described positive and negative busbar is bent to form busbar extension respectively near one end of coldplate, described two busbar extensions are contacted with coldplate by insulating paper, or two busbar extensions are stacked and contacted by insulating paper therebetween, the busbar extension being positioned at bottom is contacted with coldplate by insulating paper.
3. the film capacitor radiator structure being applied to vehicle inverter according to claim 2, is characterized in that,
Described positive busbar extends to form positive busbar extension near one end of coldplate to the direction near negative busbar, and described negative busbar extends to form negative busbar extension near one end of coldplate to the direction near positive busbar;
Described positive busbar extending part is above negative busbar extension and contacted with negative busbar extension by insulating paper, and negative busbar extension is contacted with coldplate by insulating paper; Or described negative busbar extending part is above positive busbar extension and contacted with positive busbar extension by insulating paper, positive busbar extension is contacted with coldplate by insulating paper.
4. the film capacitor radiator structure being applied to vehicle inverter according to claim 2, is characterized in that,
Described positive busbar extends to form positive busbar extension near one end of coldplate to the direction near negative busbar, and described negative busbar extends to form negative busbar extension near one end of coldplate to the direction near positive busbar;
Described positive busbar extension and negative busbar extension be not in contact with each other mutually or the end of positive busbar extension by the ends contact of insulating paper and negative busbar extension, described positive busbar extension is all contacted with coldplate by insulating paper with negative busbar extension.
5. the film capacitor radiator structure being applied to vehicle inverter according to claim 2, it is characterized in that, described positive busbar extends to form positive busbar extension near one end of coldplate to the direction away from negative busbar, described negative busbar extends to form negative busbar extension near one end of coldplate to the direction away from positive busbar, and described positive busbar extension is all contacted with coldplate by insulating paper with negative busbar extension.
6. the film capacitor radiator structure being applied to vehicle inverter according to claim 2, it is characterized in that, described positive busbar extends to form positive busbar extension near one end of coldplate to the direction near negative busbar, negative busbar extends to form negative busbar extension near one end of coldplate to the direction away from positive busbar, or positive busbar extends to form positive busbar extension near one end of coldplate to the direction away from negative busbar, negative busbar extends to form negative busbar extension near one end of coldplate to the direction near positive busbar, described positive busbar extension is not contacted with negative busbar extension or is contacted by insulating paper, the two is all contacted with coldplate by insulating paper.
7. the film capacitor radiator structure being applied to vehicle inverter according to claim 1, it is characterized in that, when the positive and negative busbar of described film fuse is parallel with coldplate, the busbar be connected with film fuse upper surface extends to along film fuse side bottom film fuse and is also outwards bent to form busbar extension, described busbar extension and do not contact with the busbar that film fuse lower surface connects or contacted by insulating paper, the two is all contacted with coldplate by insulating paper.
8. the film capacitor radiator structure being applied to vehicle inverter according to claim 1, it is characterized in that, when the positive and negative busbar of described film fuse is parallel with coldplate, the busbar be connected with film fuse upper surface to extend to along film fuse side bottom film fuse and bends inwards and forms busbar extension, described busbar extending part is below the busbar connected with film fuse lower surface and contacted by insulating paper therebetween, and busbar extension is contacted with coldplate by insulating paper simultaneously.
9. the film capacitor radiator structure being applied to vehicle inverter as claimed in any of claims 1 to 8, it is characterized in that, between described positive and negative busbar and outer casing inner wall, between heat conduction busbar and film fuse, between heat conduction busbar and outer casing inner wall, between film fuse and busbar extension, all fill potting compound.
10. the film capacitor radiator structure being applied to vehicle inverter as claimed in any of claims 1 to 8, is characterized in that, described coldplate is cooled plate.
The 11. film capacitor radiator structures being applied to vehicle inverter as claimed in any of claims 1 to 8, it is characterized in that, described positive and negative busbar and heat conduction busbar are copper bar.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420866900.XU CN204577247U (en) | 2014-12-31 | 2014-12-31 | Be applied to the film capacitor radiator structure of vehicle inverter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420866900.XU CN204577247U (en) | 2014-12-31 | 2014-12-31 | Be applied to the film capacitor radiator structure of vehicle inverter |
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| CN204577247U true CN204577247U (en) | 2015-08-19 |
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| CN201420866900.XU Active CN204577247U (en) | 2014-12-31 | 2014-12-31 | Be applied to the film capacitor radiator structure of vehicle inverter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105899050A (en) * | 2016-06-12 | 2016-08-24 | 厦门市福工动力技术有限公司 | Motor controller for new energy automobile |
| CN110808167A (en) * | 2019-09-29 | 2020-02-18 | 深圳市禾望电气股份有限公司 | Capacitor with a capacitor element |
| CN111668026A (en) * | 2020-07-01 | 2020-09-15 | 威海汉城成镐电子有限公司 | Filtering film capacitor of low-thermal-resistance automobile battery pack management system |
| CN111868860A (en) * | 2018-03-29 | 2020-10-30 | 京瓷株式会社 | Film capacitor, connection type capacitor, inverter, and electric vehicle |
-
2014
- 2014-12-31 CN CN201420866900.XU patent/CN204577247U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105899050A (en) * | 2016-06-12 | 2016-08-24 | 厦门市福工动力技术有限公司 | Motor controller for new energy automobile |
| CN111868860A (en) * | 2018-03-29 | 2020-10-30 | 京瓷株式会社 | Film capacitor, connection type capacitor, inverter, and electric vehicle |
| CN110808167A (en) * | 2019-09-29 | 2020-02-18 | 深圳市禾望电气股份有限公司 | Capacitor with a capacitor element |
| CN111668026A (en) * | 2020-07-01 | 2020-09-15 | 威海汉城成镐电子有限公司 | Filtering film capacitor of low-thermal-resistance automobile battery pack management system |
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