CN206164377U - Car dc -to -ac converter - Google Patents
Car dc -to -ac converter Download PDFInfo
- Publication number
- CN206164377U CN206164377U CN201621042831.6U CN201621042831U CN206164377U CN 206164377 U CN206164377 U CN 206164377U CN 201621042831 U CN201621042831 U CN 201621042831U CN 206164377 U CN206164377 U CN 206164377U
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- cooled plate
- vehicle inverter
- link capacitance
- capacitance
- groove
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Abstract
The utility model provides a car dc -to -ac converter, car dc -to -ac converter includes water -cooling board and direct current BUS capacitors, set up flutedly on the water -cooling board, direct current BUS capacitors holding in in the recess. Hold direct current BUS capacitors through set up the recess on the water -cooling board to make the direct current BUS capacitors overwhelming majority surrounded by the water -cooling board, greatly reduced direct current BUS capacitors's whole external environment's temperature and heat dissipation path's thermal resistance, avoid leading to the not good problem of radiating effect because of direct current BUS capacitors shell exposes under high temperature environment, improved the holistic performance of car dc -to -ac converter.
Description
Technical field
The utility model is related to electric machine controller technical field, more particularly to a kind of vehicle inverter.
Background technology
Electric automobile progresses into automobile market because of fuel-economizing, environmental protection, and electric machine controller (vehicle inverter) therein is
Electric automobile kernel component, it together constitutes " engine " of new-energy automobile, the cost to electric automobile with motor
Have an immense impact on performance.
Kernel component in vehicle inverter mainly includes IGBT (Insulated Gate Bipolar
Transistor, insulated gate bipolar transistor) and the DC_Link electric capacity (dc-link capacitance) that is connected with IGBT, IGBT and
The encapsulation of DC_Link electric capacity is good and bad and machinery radiating is arranged, significantly impacts the performance of whole vehicle inverter.
The dc-link capacitance that the vehicle inverter of electric automobile/hybrid vehicle is adopted is generally thin using polypropylene
Membrane capacitance, the advantage of polypropylene screen is：With very high resistance to water, and do not corroded by strong acid and strong base, to organic solvent
There is stronger resistance；Excellent electrical properties, dielectric strength is high, and loss tangent is little and little with the relation of temperature frequency；It is poly-
The shortcoming of propylene film is：Because the oxygen in the easy light of polypropylene, heat and air is corroded, cause media ages and performance becomes
Difference；Temperature tolerance is poor.Although the characteristics of for polypropylene screen, the vehicle inverter of electric automobile/hybrid vehicle is from poly-
Polypropylene film capacitors utensil has many good qualities, but is limited by the shortcoming of polypropylene screen, and sealing is must take into during practical application, dissipates
The problem of heat, greatly to play the performance of polypropylene film capacitor.
Fig. 1 and Fig. 2 is refer to, at present, the polypropylene film capacitor in vehicle inverter typically passes through epoxy resin 6 '
Embedding in plastics (PPS) shell 2 ', due to the thermal resistance of plastic casing 2 ' it is larger so that radiating becomes the head of current urgent need to resolve
Want problem.Existing polypropylene film capacitor radiating mode has two kinds：1) as shown in figure 1, setting in the side of plastic casing 2 '
Cooled plate 1 ' is put, the heat of polypropylene film fuse 3 ' passes sequentially through the busbar 4 ' of polypropylene film capacitor, plastic casing 2 '
It is transmitted to outside DC_Link electric capacity.But it is using the deficiency of the method, because polypropylene film capacitor embedding is in plastics
(PPS) in shell 2 ', its radiating effect is poor.2) as shown in Fig. 2 arranging cooled plate 1 ', electric capacity in the side of plastic casing 2 '
Busbar 4 ' inside device through the adjacent side of cooled plate 1 ' plastic casing 2 ' and by the straight agio cold drawing 1 ' of heat-conduction insulation spacer,
DC_Link electric capacity outside is conducted heat to by busbar 4 '.Wherein, busbar 4 ' includes positive copper bar 40 ', negative copper bar 41 '.But
It is, because ambient temperature is higher, to need large-area busbar to wrap up polypropylene film fuse using the deficiency of the method
It is main in 3 ', Fig. 2 that capacitor outside is conducted heat to by negative copper bar 41 ', the positive copper bar 40 ' in DC_Link electric capacity bottom with it is negative
There is copper bar lamination in copper bar 41 ', between positive copper bar 40 ' and the negative lamination of copper bar 41 ', bear and arranged between copper bar 41 ' and cold water plate 1 '
There is insulating paper 5 ', if lamination effect is bad will to largely effect on radiating effect, structural manufacturing process is complicated.
Existing vehicle inverter is configured as two kinds, and the first is laminated construction, i.e. DC_Link electric capacity, IGBT, water-cooled
Plate 1 ' is distributed from top to bottom, and the IGBT is located between DC_Link electric capacity and cooled plate 1 ', the vehicle inverter of the configuration, by
It is larger in the thermal resistance of DC_Link electric capacity to cooled plate 1 ', cause radiating effect not good.Second is tile arrangement, i.e. IGBT and
DC_Link electric capacity may be contained within cooled plate 1 ', but because DC_Link electric capacity adopts plastic casing 2 ', thermal resistance is larger, causes
Radiating effect is not good.
For the problem that the vehicle inverter of above two configuration is present, in order that DC_Link electric capacity normal work and not
It is damaged, a kind of universal method reduces DC_Link by the way that DC_Link capacitor's capacities (higher than system ripple demand) are significantly increased
Current density and power consumption under unit of capacity capacitance, but this can be significantly increased the volume and cost of electric capacity.And electric automobile/mixing
Power vehicle has higher requirement to the volume and cost of vehicle inverter, as components and parts maximum in vehicle inverter,
The method is difficult to be received.Another method is to arrange capacitor temperature sensor, and in its excess temperature power deratng is carried out, and is made
The power output of whole power drive system is limited by the hot bottleneck of DC_Link electric capacity, reduces vehicle inverter performance.
With the increase and the raising of environment temperature of the power output of electric automobile/hybrid vehicle, capacitor
Ripple current demand gradually increases, and the radiating to capacitor is put forward higher requirement, and those skilled in the art always search for
Meet the solution of this demand.
Utility model content
The purpose of this utility model is to provide a kind of vehicle inverter Primary Component layout and heat sink conception, to solve to make
It is not good with DC_Link electric capacity radiating effect in prior art, cause the problem of vehicle inverter hydraulic performance decline.
To solve above-mentioned technical problem, the utility model provides a kind of vehicle inverter, and the vehicle inverter includes：Water
Cold drawing and dc-link capacitance, open up fluted in the cooled plate, and the dc-link capacitance is placed in the groove.
Optionally, in described vehicle inverter, also including the surface for being arranged at the cooled plate and with the direct current
The IGBT of bus capacitor connection.
Optionally, in described vehicle inverter, the IGBT is located at the cooled plate with the dc-link capacitance
Same surface.
Optionally, in described vehicle inverter, the cooled plate includes the first cooled plate and is arranged at described first
Cooled plate lower section and the second cooled plate contacted with the bottom surface of first cooled plate, the groove is opened in second water-cooled
On plate, the IGBT is arranged in first cooled plate.
Optionally, in described vehicle inverter, the opening of the groove in second cooled plate is towards described
The lower surface of the first cooled plate.
Optionally, in described vehicle inverter, the dc-link capacitance includes fuse and for drawing the core
The busbar of sub- positive and negative electrode, the busbar is connected with the IGBT.
Optionally, in described vehicle inverter, the busbar is connected through first cooled plate with the IGBT.
Optionally, in described vehicle inverter, the dc-link capacitance is by epoxy resin encapsulated in described recessed
In groove.
Optionally, in described vehicle inverter, the dc-link capacitance be polypropylene film capacitor, the core
Son is polypropylene film.
Optionally, in described vehicle inverter, also including the Y capacitance being placed in the groove, the Y capacitance with
The dc-link capacitance is in parallel, and is grounded.
In vehicle inverter provided by the utility model, the vehicle inverter includes cooled plate and dc bus
Electric capacity, opens up fluted in the cooled plate, and the dc-link capacitance is placed in the groove.By opening up in cooled plate
Groove so that the dc-link capacitance overwhelming majority is water cooled plate encirclement, greatly reduces direct current accommodating dc-link capacitance
The temperature and the thermal resistance of heat dissipation path of the whole external environment of bus capacitor, it is to avoid because dc-link capacitance shell is exposed to height
Under warm environment, the problem for causing radiating effect not good improves the overall performance of vehicle inverter.
Description of the drawings
Fig. 1 is the structural representation one of existing polypropylene film capacitor radiating mode；
Fig. 2 is the structural representation two of existing polypropylene film capacitor radiating mode；
Fig. 3 is the semi-cutaway of vehicle inverter in the utility model embodiment one；
Fig. 4 is the semi-cutaway of vehicle inverter in the utility model embodiment two.
In Fig. 1-Fig. 2：1 '-cooled plate；2 '-plastic casing；3 '-polypropylene film fuse；4 '-busbar；40 '-positive copper bar；
41 '-negative copper bar；5 '-insulating paper；6 '-epoxy resin；
In Fig. 3-Fig. 4：1- cooled plates；10- grooves；The cooled plates of 11- first；The cooled plates of 12- second；2-IGBT；30- cores
Son；31- busbars；The positive copper bars of 310-；320- bears copper bar；4- epoxy resin.
Specific embodiment
Below in conjunction with the drawings and specific embodiments pair the utility model proposes vehicle inverter be described in further detail.
According to following explanation and claims, advantages and features of the present utility model will become apparent from.It should be noted that, accompanying drawing is adopted
Very simplified form and use non-accurately ratio, only to it is convenient, lucidly aid in illustrating the utility model embodiment
Purpose.
Embodiment one
Fig. 3 is refer to, it is the semi-cutaway of vehicle inverter in the present embodiment.The vehicle inverter includes：Cooled plate
1st, IGBT2 and dc-link capacitance, open up fluted 10 in the cooled plate 1, the dc-link capacitance is placed in described
In groove 10, IGBT2 is arranged at the surface of the cooled plate 1 and is connected with the dc-link capacitance, wherein, the IGBT2
With the same surface that the dc-link capacitance is located at the cooled plate 1.Accommodated by opening up groove 10 in cooled plate 1 straight
Stream bus capacitor, so that the dc-link capacitance overwhelming majority is water cooled plate 1 and surrounds, greatly reduces the whole of dc-link capacitance
The temperature of individual external environment, is conducive to improving the performance of vehicle inverter.
Further, the dc-link capacitance includes fuse 30 and the busbar for drawing the positive and negative electrode of the fuse 30
31, the busbar 31 is connected with the IGBT2, and specifically, the busbar 31 includes positive copper bar 310 and negative copper bar 320, it is described just
Copper bar 310 is connected with the positive pole of fuse 30, and the negative copper bar 320 is connected with the negative pole of the fuse 30, positive copper bar 310 and negative copper
Row 320 is connected with IGBT2.
In the present embodiment, in order to ensure the dc-link capacitance is combined closely with groove 10, by the way that epoxy resin 4 is filled
It is encapsulated in the gap between the groove 10 and the dc-link capacitance to realize.
The vehicle inverter also includes Y capacitance, and the Y capacitance is placed in the groove 10, the Y capacitance with it is described
Dc-link capacitance is in parallel, and is grounded.In order to improve the compactness and performance of vehicle inverter layout, here by Y capacitance
In being arranged at groove 10, the size of vehicle inverter is reduced, effectively reduce the environment temperature of Y capacitance, further improve vapour
The performance of car inverter.
Embodiment two
Fig. 4 is refer to, it is the semi-cutaway of vehicle inverter in the present embodiment.Embodiment two exists with the difference of embodiment one
It is different in the concrete layout of, vehicle inverter, show as the position of dc-link capacitance and the IGBT2 relative to cooled plate 1
Relation.In embodiment one, the layout structure of vehicle inverter is tile arrangement, i.e., described dc-link capacitance and the IGBT2
It is respectively positioned on the same surface of cooled plate 1.In embodiment two, the layout structure of vehicle inverter is laminated construction, IGBT2, water-cooled
Plate 1, dc-link capacitance is distributed from top to bottom.Specifically, cooled plate 1 is divided into into two parts, i.e. the first cooled plate 11 and is set
It is placed in the lower section of first cooled plate 11 and the second cooled plate 12 contacted with the bottom surface of first cooled plate 11, the groove
10 are opened in second cooled plate 12, and the IGBT2 is arranged in first cooled plate 11, second cooled plate 12
On groove 10 be used for house dc-link capacitance.Wherein, by by the embedding of epoxy resin 4 in the groove 10 and the direct current
Gap between bus capacitor fuse realizing, in Fig. 4, after the embedding of epoxy resin 4, be specifically distributed between busbar and fuse,
Gap between busbar and groove body wall.
In other words, the first cooled plate 11 and the second cooled plate 12 are vertically stacked distribution, and the one of the second cooled plate 12
Face is used for the radiating of IGBT2, and the another side of the second cooled plate 12 is contacted with the one side of the first cooled plate 11.Due to dc bus electricity
The outlet of the busbar 31 of appearance must be in embedding face, and in order to reduce, busbar 31 is long to cause stray inductance excessive, it is preferred that described
The opening of the groove 10 in two cooled plates 12 towards first cooled plate 11 lower surface so that being provided with described
The surface of first cooled plate 11 of IGBT2 is parallel to each other with the surface of second cooled plate 12 for opening up fluted 10, described
Busbar 31 is connected through first cooled plate 11 with the IGBT2, shortens the length needed for busbar 31, and busbar 31 can be with
Using stack bus bar, stray inductance is reduced.First cooled plate can be made full use of based on vehicle inverter structure in the present embodiment
11 upper and lower surface is radiated, and the radiating to the IGBT2 is realized in the upper surface of the first cooled plate 11, the first cooled plate 11
Lower surface realizes that the one side to the dc-link capacitance radiates, and the dc-link capacitance residual surface is placed in groove 10
In, radiated using the second cooled plate 12, under preferably resolving existing dc-link capacitance by exposure to hot environment,
The problem for causing radiating effect not good.
Each embodiment is described by the way of progressive in this specification, and what each embodiment was stressed is and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
To sum up, in vehicle inverter provided by the utility model, the vehicle inverter is including cooled plate and directly
Stream bus capacitor, opens up fluted in the cooled plate, and the dc-link capacitance is placed in the groove.By in water-cooled
Open up groove on plate to accommodate dc-link capacitance, so that the dc-link capacitance overwhelming majority is water cooled plate encirclement, greatly drop
The temperature and the thermal resistance of heat dissipation path of the low whole external environment of dc-link capacitance, it is to avoid because of dc-link capacitance shell
Under being exposed to hot environment, the problem for causing radiating effect not good improves the overall performance of vehicle inverter.
Foregoing description is only the description to the utility model preferred embodiment, not to any limit of the utility model scope
Calmly, the those of ordinary skill in the utility model field does according to the disclosure above content any change, modification, belonging to right will
Seek the protection domain of book.
Claims (10)
1. a kind of vehicle inverter, it is characterised in that include：Cooled plate and dc-link capacitance, open up in the cooled plate
Fluted, the dc-link capacitance is placed in the groove.
2. vehicle inverter as claimed in claim 1, it is characterised in that also including the surface for being arranged at the cooled plate and with
The IGBT of the dc-link capacitance connection.
3. vehicle inverter as claimed in claim 2, it is characterised in that the IGBT is located at institute with the dc-link capacitance
State the same surface of cooled plate.
4. vehicle inverter as claimed in claim 2, it is characterised in that the cooled plate includes the first cooled plate and is arranged at
The first cooled plate lower section and the second cooled plate contacted with the bottom surface of first cooled plate, the groove is opened in described
In second cooled plate, the IGBT is arranged in first cooled plate.
5. vehicle inverter as claimed in claim 4, it is characterised in that the opening of the groove in second cooled plate
Towards the lower surface of first cooled plate.
6. the vehicle inverter as any one of claim 4～5, it is characterised in that the dc-link capacitance includes
Fuse and the busbar for drawing the fuse positive and negative electrode, the busbar is connected with the IGBT.
7. vehicle inverter as claimed in claim 6, it is characterised in that the busbar through first cooled plate with it is described
IGBT connects.
8. vehicle inverter as claimed in claim 1, it is characterised in that the dc-link capacitance passes through epoxy resin encapsulated
In the groove.
9. vehicle inverter as claimed in claim 6, it is characterised in that the dc-link capacitance is polypropylene film electric capacity
Device, the fuse is polypropylene film.
10. the vehicle inverter as any one of claim 7～9, it is characterised in that also including being placed in the groove
In Y capacitance, the Y capacitance is in parallel with the dc-link capacitance, and is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621042831.6U CN206164377U (en) | 2016-09-08 | 2016-09-08 | Car dc -to -ac converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621042831.6U CN206164377U (en) | 2016-09-08 | 2016-09-08 | Car dc -to -ac converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206164377U true CN206164377U (en) | 2017-05-10 |
Family
ID=58651741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621042831.6U Active CN206164377U (en) | 2016-09-08 | 2016-09-08 | Car dc -to -ac converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206164377U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107249275A (en) * | 2017-07-26 | 2017-10-13 | 合肥巨动力系统有限公司 | A kind of Novel motor controller capacitor installation structure |
| CN109509936A (en) * | 2018-12-20 | 2019-03-22 | 常州卡斯特铝精密铸造科技有限公司 | High-efficient Water cold plate for electric vehicle |
| CN110278684A (en) * | 2018-03-14 | 2019-09-24 | 株式会社丰田自动织机 | Power inverter |
| CN110417309A (en) * | 2019-08-02 | 2019-11-05 | 北斗航天汽车（北京）有限公司 | Novel motor controller, electric machine controller manufacturing method and electric car |
-
2016
- 2016-09-08 CN CN201621042831.6U patent/CN206164377U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107249275A (en) * | 2017-07-26 | 2017-10-13 | 合肥巨动力系统有限公司 | A kind of Novel motor controller capacitor installation structure |
| CN110278684A (en) * | 2018-03-14 | 2019-09-24 | 株式会社丰田自动织机 | Power inverter |
| CN109509936A (en) * | 2018-12-20 | 2019-03-22 | 常州卡斯特铝精密铸造科技有限公司 | High-efficient Water cold plate for electric vehicle |
| CN110417309A (en) * | 2019-08-02 | 2019-11-05 | 北斗航天汽车（北京）有限公司 | Novel motor controller, electric machine controller manufacturing method and electric car |
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