CN208570361U - Height heat dissipation thin film capacitor for electric vehicle - Google Patents
Height heat dissipation thin film capacitor for electric vehicle Download PDFInfo
- Publication number
- CN208570361U CN208570361U CN201820708120.0U CN201820708120U CN208570361U CN 208570361 U CN208570361 U CN 208570361U CN 201820708120 U CN201820708120 U CN 201820708120U CN 208570361 U CN208570361 U CN 208570361U
- Authority
- CN
- China
- Prior art keywords
- copper
- capacitor
- bar
- thin film
- heat dissipation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The utility model relates to thin film capacitor technical fields, specially a kind of high heat dissipation thin film capacitor for electric vehicle, it can be compact-sized, it is small in size, it is at low cost, good heat dissipation effect, it includes shell, extraction electrode, capacitor body and potting compound are provided in shell, it is characterized in that, shell is the plastic casing that bottom is equipped with cooling metal plate, cooling metal plate with the cooling device inside electric car for connecting, capacitor body connects copper bus-bar by copper sheet, copper bus-bar is integrated to be formed with extraction electrode, copper bus-bar is close to cooling metal plate setting, insulating paper is provided between copper bus-bar and cooling metal plate.
Description
Technical field
The utility model relates to thin film capacitor technical field, specially a kind of high heat dissipation thin-film capacitor for electric vehicle
Device.
Background technique
With countries in the world start pay attention to ecological environment protection, electric car on energy demand prediction, in environmental protection
Exclusive advantage becomes various countries and puts into the emphasis that great effort, material resources, financial resources are researched and developed one after another.
Electric machine controller is new-energy automobile core component, and thin film capacitor is that electric machine controller is only second to power module
Important Components, play DC support in electric machine controller circuit.One is absorbing from inverter to " DC-
The amplitude pulsating current that Link " is asked for prevents it from generating amplitude pulsating volage in the impedance of " DC-Link ", makes inversion
The mains fluctuations at device end are maintained at allowed band；The second is preventing from the voltage overshoot of " DC-Link " and instantaneous excessively electric
Press the influence to inverter.
Present thin film capacitor for electric vehicle uses high temperature polypropylene screen as medium as DC support capacitor,
Have many advantages, such as that self-repairing capability, resistance to overvoltage capabilities are strong, the service life is long.But thin-film capacitor has the stringent upper limit using temperature,
85 DEG C or more there is drop volume, use the risk that there is thermal failure at 110 DEG C.And under the use condition of electric car, only
It is that environment is possible to reach 85 DEG C or more in the controller case of capacitor work, along with capacitor can inherently pass through high frequency
High current, the fever of itself can make high 10 ~ 20 DEG C of its operating temperature it is even higher.And the development of Control of Electric Vehicles now
Toward higher frequency, higher power density, smaller volume development, for the operating ambient temperature of capacitor, radiating condition is had also been proposed
Higher limitation.
The inside of traditional electric car electricity container relies only on potting compound without radiator, and shell etc. is by inner core
Son/electrode heat passes directed outwards, and potting compound, enclosure material diversification make thermal conductivity between unlike material different, conduction
The distance of distance makes capacitor thermal resistance different, so that capacitor application link operating condition is complicated, failure risk is high.Because of fuse, mother
Discharge heat and cause internal temperature rise of hot spot high, capacitor reduced service life, it is quick-fried that when inclement condition, even will cause fuse hot melt
It is fried to wait failure.
In the application to ensure that capacitor will not exceed the operating temperature range of capacitor because of temperature, when general type selecting, can be stayed
Very big surplus capacity can make product cost height, volume big in this way, cause to waste.And electric machine controller proposes product toward height now
Power, high density, miniaturization improve, higher to the requirement of capacitor under such requirement.
Therefore, cause electric control function to fail to prevent capacitor from generating heat in the process, or cause whole system unavailable, design
A kind of thin film capacitor with high heat dispersion be a current technical problem urgently to be solved and one be conducive to it is electronic
The technological innovation that automobile is broken through toward high stability, higher performance.
Summary of the invention
At high cost, volume is big in order to solve, the problem of heat dissipation effect difference, and it is electronic that the utility model provides a kind of high heat dissipation
Automobile thin film capacitor, can be compact-sized, small in size, at low cost, good heat dissipation effect.
Its technical solution is such that a kind of high heat dissipation thin film capacitor for electric vehicle comprising shell draws electricity
Pole is provided with capacitor body and potting compound in the shell, which is characterized in that the shell is that bottom is equipped with cooling metal
The plastic casing of plate, for the cooling metal plate for connecting with the cooling device inside electric car, the capacitor body is logical
Copper sheet connection copper bus-bar is crossed, the copper bus-bar is integrated to be formed with the extraction electrode, and the copper bus-bar is close to described
Cooling metal plate setting, is provided with insulating paper between the copper bus-bar and the cooling metal plate.
It is further characterized by the potting compound is high-thermal-conductivity epoxy resin；
The cooling metal plate is clad aluminium, and the copper sheet is copper plate；
The capacitor body is formed in parallel by least two single, is plated on the metallized film of the capacitor body
There is aluminium film, the aluminium film edges at two ends is equipped with thickening layer；
The copper bus-bar include lamination arrangement upper layer copper bar, intermediate insulation plate and lower layer's copper bar, the upper layer copper bar with
Lower layer's copper bar passes through the copper sheet respectively and connects the capacitor body, the extraction electrode connect the upper layer copper bar and
Lower layer's copper bar.
After the structure of the utility model, since shell is the plastic casing that bottom is equipped with cooling metal plate, this is cold
But metal plate is with the cooling device inside electric car for connect, copper bus-bar and extraction electrode can be integrated shape simultaneously
At, copper bus-bar shortens thermally conductive distance in cooling metal plate setting, integral heat sink structure design, and it is compact-sized, it is small in size,
It is at low cost, the integral heat sink power of capacitor is effectively improved, the heat radiation power of capacitor is improved 2 ~ 3 times, greatly side
Just the requirement of the high use occasion of high current, heating power is met.
Detailed description of the invention
Fig. 1 is the utility model external structure schematic diagram；
Fig. 2 is the utility model schematic diagram of internal structure；
Fig. 3 is capacitor body mounting structure schematic diagram；
Fig. 4 is capacitor body structural schematic diagram；
Fig. 5 is copper sheet structural schematic diagram；
Fig. 6 is copper bus-bar structural schematic diagram；
Fig. 7 is schematic diagram of housing structure；
Fig. 8 is cooling metal plate structure schematic diagram.
Specific embodiment
As shown in Fig. 1 to Fig. 8, a kind of high heat dissipation thin film capacitor for electric vehicle comprising shell 1, extraction electrode, shell
Capacitor body 3 and potting compound 5 are provided in body 1, shell 1 is the plastic casing 11 that bottom is equipped with cooling metal plate 12, cold
But metal plate 12 can be cooling water pipeline or air-cooled radiator, have for connecting with the cooling device inside electric car
Effect reduces capacitor operating temperature, and capacitor body 3 connects copper bus-bar 2 by copper sheet 4, and copper bus-bar 2 is integrated with extraction electrode
Structure is formed, and copper bus-bar 2 is arranged close to cooling metal plate 12, is provided with insulating paper between copper bus-bar 2 and cooling metal plate 12.
Potting compound is the low linear expansion coefficient epoxy resin of high thermal conductivity, has the effect of that high thermal conductivity is fire-retardant；Cooling metal plate
12 be clad aluminium, and copper sheet 4 is copper plate.The cooling metal plate 12 and its linear expansion coefficient of epoxy resin of selection need to be close to modelings
Expect shell, by cooling metal plate 12 while a part as shell, in the case where playing heat spreading function, while saving space, save
Material, save the cost.
Capacitor body 3 is formed in parallel by two kinds of single 31,32, is coated with aluminium on the metallized film of capacitor body 3
Film, aluminium film edges at two ends are equipped with thickening layer, the film for selecting sheet resistance low, while selecting the film of narrower width as far as possible, make
Electric current is most short in the path that fuse flows through, and reduces capacitor itself and generates heat, copper plate 41 and copper plate 42 be respectively used to single 31,
32 connection；Copper bus-bar 2 includes upper layer copper bar 21, intermediate insulation plate 23 and the lower layer's copper bar 22 of lamination arrangement, upper layer copper bar 21
Capacitor body 31,32, extraction electrode connection upper layer copper bar 21 and lower layer's copper bar connects by copper sheet 4 respectively with lower layer copper bar 22
22；Potting compound fills 1 inner cavity of shell.
The utility model capacitor can also greatly reduce volume other than greatly improving heat radiation power, and capacitor is whole
Volume is about 3/4ths of former scheme, reduces installation dimension, facilitates the Miniaturization Design of client's complete machine；The utility model capacitor
Device by optimization of inside structure, make it is compact-sized, while it is internal use stack bus bar technology, it is spuious can also to effectively reduce capacitor
Inductance enhances the stability of automatically controlled performance, improves service life；The utility model capacitor is the capacitor design of the type
Standardized element, client have great convenience in selection application aspect, are more convenient for standardizing, the scale for being conducive to product makes
With.
Claims (5)
1. a kind of high heat dissipation thin film capacitor for electric vehicle comprising shell, extraction electrode are provided with capacitor in the shell
Device fuse and potting compound, which is characterized in that the shell is the plastic casing that bottom is equipped with cooling metal plate, the cooling gold
Belong to plate for connecting with the cooling device inside electric car, the capacitor body connects copper bus-bar, the copper by copper sheet
Busbar is integrated to be formed with the extraction electrode, and the copper bus-bar is arranged close to the cooling metal plate, and the copper is female
Insulating paper is provided between row and the cooling metal plate.
2. a kind of high heat dissipation thin film capacitor for electric vehicle according to claim 1, which is characterized in that the potting compound
For high-thermal-conductivity epoxy resin.
3. a kind of high heat dissipation thin film capacitor for electric vehicle according to claim 1, which is characterized in that the cooling gold
Category plate is clad aluminium, and the copper sheet is copper plate.
4. a kind of high heat dissipation thin film capacitor for electric vehicle according to claim 1, which is characterized in that the capacitor
Fuse is formed in parallel by least two single, and aluminium film, the aluminium film two are coated on the metallized film of the capacitor body
End margin is equipped with thickening layer.
5. a kind of high heat dissipation thin film capacitor for electric vehicle according to claim 1, which is characterized in that the copper bus-bar
Upper layer copper bar, intermediate insulation plate and lower layer's copper bar including lamination arrangement, the upper layer copper bar lead to respectively with lower layer's copper bar
It crosses the copper sheet and connects the capacitor body, the extraction electrode connects the upper layer copper bar and lower layer's copper bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820708120.0U CN208570361U (en) | 2018-05-14 | 2018-05-14 | Height heat dissipation thin film capacitor for electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820708120.0U CN208570361U (en) | 2018-05-14 | 2018-05-14 | Height heat dissipation thin film capacitor for electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208570361U true CN208570361U (en) | 2019-03-01 |
Family
ID=65483289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820708120.0U Active CN208570361U (en) | 2018-05-14 | 2018-05-14 | Height heat dissipation thin film capacitor for electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208570361U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108735509A (en) * | 2018-05-14 | 2018-11-02 | 无锡宸瑞新能源科技有限公司 | A kind of high heat dissipation thin film capacitor for electric vehicle |
| CN115483027A (en) * | 2022-09-27 | 2022-12-16 | 成都宏明电子股份有限公司 | Surface-mounted film capacitor capable of positioning capacitor core group through lead-out sheet |
-
2018
- 2018-05-14 CN CN201820708120.0U patent/CN208570361U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108735509A (en) * | 2018-05-14 | 2018-11-02 | 无锡宸瑞新能源科技有限公司 | A kind of high heat dissipation thin film capacitor for electric vehicle |
| CN115483027A (en) * | 2022-09-27 | 2022-12-16 | 成都宏明电子股份有限公司 | Surface-mounted film capacitor capable of positioning capacitor core group through lead-out sheet |
| CN115483027B (en) * | 2022-09-27 | 2023-07-14 | 成都宏明电子股份有限公司 | Surface-mounted film capacitor capable of positioning capacitor core group through lead-out sheet |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108735509A (en) | A kind of high heat dissipation thin film capacitor for electric vehicle | |
| JP4775475B2 (en) | Power converter | |
| CN107294312B (en) | A kind of electric vehicle motor controller structure | |
| CN206282731U (en) | A kind of thin film capacitor used for electric vehicle for carrying heat abstractor | |
| CN107786070B (en) | Intelligent power module, motor controller and vehicle | |
| CN208570361U (en) | Height heat dissipation thin film capacitor for electric vehicle | |
| CN205283407U (en) | Power conversion device | |
| CN207354068U (en) | A kind of IGBT power module and the power modules for including it | |
| CN208045617U (en) | Battery modules and electric vehicle | |
| JP6999777B1 (en) | Power converter | |
| CN212113470U (en) | Adopt female metal casing film capacitor who arranges externally | |
| CN211184790U (en) | Electric bicycle lithium cell heat radiation structure | |
| CN209731873U (en) | Power switching devices | |
| CN108925103A (en) | A kind of motor controller assemblies | |
| CN214012755U (en) | Novel large capacity super capacitor module | |
| CN210296126U (en) | Bus capacitor of new energy motor controller | |
| CN211152526U (en) | Anti-interference integrated radiating capacitor module | |
| CN211128734U (en) | Busbar capacitor assembly heat dissipation device and electric automobile driving motor controller | |
| CN204425175U (en) | High voltage transducer power unit | |
| CN208836465U (en) | A kind of high-power low pressure inverter structure | |
| CN112532148A (en) | Motor controller and electric automobile | |
| CN219698291U (en) | IGBT module structure unit | |
| CN111442419A (en) | Electrical apparatus box structure and air condensing units | |
| CN110996606A (en) | Anti-interference integrated heat dissipation capacitor module and preparation method thereof | |
| CN212752103U (en) | Modular power module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |