CN108565117A - A kind of thin film capacitor for electric vehicle of integrated EMC schemes - Google Patents
A kind of thin film capacitor for electric vehicle of integrated EMC schemes Download PDFInfo
- Publication number
- CN108565117A CN108565117A CN201810122344.8A CN201810122344A CN108565117A CN 108565117 A CN108565117 A CN 108565117A CN 201810122344 A CN201810122344 A CN 201810122344A CN 108565117 A CN108565117 A CN 108565117A
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- China
- Prior art keywords
- copper bar
- electric vehicle
- lower layer
- capacitor body
- thin film
- 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.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 32
- 239000010409 thin film Substances 0.000 title claims abstract description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 45
- 229910052802 copper Inorganic materials 0.000 claims abstract description 45
- 239000010949 copper Substances 0.000 claims abstract description 45
- 238000000605 extraction Methods 0.000 claims abstract description 7
- 150000001875 compounds Chemical class 0.000 claims abstract description 4
- 238000009413 insulation Methods 0.000 claims abstract description 4
- 239000002131 composite material Substances 0.000 claims abstract description 3
- 239000010410 layer Substances 0.000 claims description 21
- 239000002356 single layer Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 7
- 238000001914 filtration Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/33—Thin- or thick-film capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/228—Terminals
- H01G4/248—Terminals the terminals embracing or surrounding the capacitive element, e.g. caps
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The present invention relates to new-energy automobile applications, specially a kind of thin film capacitor for electric vehicle of integrated EMC schemes, it is simple in structure, it is small, meet the requirement of EMC standards, use cost is low, it includes shell, it is provided with copper bar and capacitor body in the shell, the copper bar is internal composite lamainated structure, including extraction electrode and compound upper layer copper bar, intermediate insulation plate, lower layer's copper bar, the extraction electrode is divided into two groups, one group of exit connects IGBT module, another group of exit is busbar input terminal, the capacitor body is directly connected to lower layer's copper bar on one side, another side connects the upper layer copper bar by connecting plate, it is provided with a pair of of Y capacitance between the upper layer copper bar and lower layer's copper bar, close to the busbar input terminal, the exit of the Y capacitance connects grounding insert-pin.
Description
Technical field
The present invention relates to new-energy automobile application, specially a kind of thin-film electro for electric vehicle of integrated EMC schemes
Container.
Background technology
With the development of economy with the raising of living standards of the people, automobile providing quick, comfortable, convenient life for people
While be also faced with the energy and environmental protection dual-pressure.Based on this, traditional auto industry is just rapidly toward new-energy automobile
Direction transition and development, the whole world multinational specifies the fuel vehicle timetable that prohibits selling, the almost all of mainstream automotive company in the whole world
All announce the transition plan of electric vehicle.
The main direction of development of current new-energy automobile is electric vehicle, refers to being driven with motor using vehicle power supply as power
Motor car wheel travels, and meets the vehicle of road traffic, security legislation requirements.Its operation principle：Accumulator --- electric current ---
--- motor --- power drive system --- drives running car to electric governor（Road), it can be seen that, mainly still
Application about " electricity " and control technology.
Compared with conventional fuel oil automobile, the switching device in electric automobile high-voltage electrical system can generate stronger outside in the car
Electromagnetic noise, and the control and sensing network inside electric vehicle are highly prone to interfere, power source to electric vehicle electricity
Magnetic environment is considerably complicated, from inter-system interference to two levels problem that all to encounter some EMC related, example are interfered in system
As vehicle radiation-emitting is exceeded, Vehicular charger conducted emission is exceeded, radio AM UHF band receptions exception, CAN distorted signals,
Situations such as " falling high pressure " failure, power-assisted steering device failure, battery cell overvoltage, therefore the EMC problems of electric vehicle are more tight
It is high.Especially once since EMC influences signal quality, it is possible to cause vehicle driving safety problem, be China's ev industry
Change a common problem for having to face, it is necessary to cause the great attention of each electric vehicle manufacturer.
Nowadays, automobile industry has formulated vehicle the standard and test specification in terms of stringent electromagnetic compatibility, first zero
Part itself have to be by emc testing, after being integrated into vehicle, and vehicle will also pass through Electro Magnetic Compatibility comprehensive assessment.Electromagnetism
Compatibility have right of veto by one vote, if Electro Magnetic Compatibility cannot meet corresponding regulation test request, will cause product cannot on
City.European and American developed countries attach great importance to the research to automotive EMC, and countries in the world and related international organizations formulate
Numerous standards and regulation carrys out the electromagnetic compatibility problem of restricting vehicle.The 1st electromagnetic compatibility country is issued since l983 in China
Since standard GB39O7-l983, also issued multiple national standards in relation to electromagnetic compatibility.
Currently, traditional EMC control methods include the devices such as LC filters, inductor, filtering magnet ring, external Y capacitance.Tool
Body has following 4 kinds of modes：
1.LC filters are generally made of filter condenser and reactor, in parallel with harmonic source, play the work of filtering and reactive-load compensation
With it can allow the signal of low frequency to pass through, and have inhibiting effect to High-frequency Interference.But the LC filters are relatively applicable in alternating current
Net and high frequency switch power, it is not applicable to the electric vehicle of battery DC power supply.
2. the characteristics of inductor utilizes the electric current in energy-storage reactor L that cannot be mutated, an inductance of connecting in the loop, when
A back-emf will be induced when output current changes, in L, keep output current wave more smooth.But the shortcomings that inductance
It is that volume is big, it is of high cost.
3. filtering magnet ring is a kind of high magnetic conductivity Ferrite Material of utilization, when there is high-frequency energy to pass through magnetic material, electricity
These energy will be converted into thermal energy consumption and dissipated by resistive component.Thus constitute a low-pass filter so that high frequency noise
Signal is greatly attenuated, and can be ignored to the impedance of low frequency useful signal.But the shortcomings that filtering magnet ring is：It needs to be stuck in
On DC bus so that controller volume increases, and space availability ratio reduces.
4. external Y capacitance is mounted at electric vehicle motor controller DC bus input terminal or DC suppling equipment
The capacitance of power input end, the capacitance can inhibit and eliminate Conduction Interference, and electric vehicle operation is made to meet safety standard requirements.But
Equally the shortcomings that external Y capacitance, is：It is needed in close to DC bus end so that controller volume increases, space availability ratio
It reduces.
By can be seen that the prior art has the following defects to the analytic explanation of traditional EMC filter circuit above：Volume
Larger, cost is higher, installs and uses inconvenience；Simultaneously because the distribution of Various Components on the line, it is possible to produce larger
Distributed inductance, increases more interference sources to circuit instead, and EMC effects are bad instead.
Invention content
To solve the above-mentioned problems, the present invention provides a kind of thin film capacitor for electric vehicle of integrated EMC schemes, knots
Structure is simple, small, meets the requirement of EMC standards, and use cost is low.
Its technical solution is such：A kind of thin film capacitor for electric vehicle of integrated EMC schemes comprising shell,
It is provided with copper bar and capacitor body in the shell, which is characterized in that the copper bar is internal composite lamainated structure, including is drawn
Go out electrode and compound upper layer copper bar, intermediate insulation plate, lower layer's copper bar, the extraction electrode is divided into two groups, and one group of exit connects
Connect IGBT module, another group of exit is busbar input terminal, and the capacitor body is directly connected to lower layer's copper bar, another on one side
The upper layer copper bar is connected by connecting plate on one side, a pair of of Y capacitance is provided between the upper layer copper bar and lower layer's copper bar,
Close to the busbar input terminal, the exit of the Y capacitance connects grounding insert-pin.
It is further characterized by the busbar input end is provided with magnet ring；
The capacitor body is set to lower layer's copper bar side, and the capacitor body is to be welded to connect the lower layer on one side
Copper bar, the connecting plate are copper coin；
The capacitor body is flat single layer core subgroup, and thin-film width size is 10-25mm in the capacitor body.
After capacitor using the present invention, the exit of the copper bar of capacitor body connection is directly connected to IGBT module, even
It connects distance and reaches most short, entire loop stray inductance accomplishes minimum, the theoretically only device inductance of capacitance and module, such energy
The reverse peak voltage for effectively reducing its circuit, there is an apparent EMC improvements, built-in Y capacitance, from busbar input terminal compared with
Ground terminal is drawn in close position, effectively eliminates common mode interference part, inhibits and eliminate Conduction Interference, and overall structure is simple, both full
Small, light-weight, the at low cost requirement that the present electric vehicle of foot requires also meets stringent EMC standards requirement.
Description of the drawings
Fig. 1 is external structure schematic diagram of the present invention；
Fig. 2 is that the present invention removes epoxy resin structural schematic diagram；
Fig. 3 is internal structure schematic diagram of the present invention；
Fig. 4 is the structural schematic diagram after being equipped with magnet ring；
Fig. 5 is capacitor body structural schematic diagram；
Fig. 6 is structure of copper bar elevational schematic view；
Fig. 7 is structure of copper bar stereoscopic schematic diagram；
Fig. 8 is equivalent circuit diagram of the present invention.
Specific implementation mode
See shown in Fig. 1 to Fig. 8, a kind of thin film capacitor for electric vehicle of integrated EMC schemes it include shell 1, shell 1
It is inside provided with copper bar 2 and capacitor body 4 and epoxy resin 8, copper bar 2 includes compound upper layer copper bar 21, intermediate insulation plate 22
With lower layer copper bar 23, one group of 24 connection IGBT module of 2 extraction electrode of copper bar, another group 25 be busbar input terminal, capacitor core
Son 4 connects upper layer copper bar 21, upper layer copper bar 21 and lower layer's copper for one side directly welding lower layer copper bar 23, another side by copper coin 3
It is provided with a pair of of Y capacitance 5 between row 23, close to busbar input terminal, the exit of Y capacitance 5 connects grounding insert-pin 6.
For practical solution demand, can busbar input end be provided with high magnetic conductivity ferrite bead 7, constitute one
Low-pass filter so that high frequency noise signal is greatly attenuated, and effectively eliminates the interference of high frequency section.
Capacitor body 4 is flat single layer core subgroup, and thin-film width is 10-25mm in capacitor body, and electric current flows through
Distance shortens, while capacitor body 4 being made to be welded direct on copper bar 2, increases 2 overlapping area of copper bar, to reduce itself self-induction,
Down within 10nH；The DC support capacitance is alternatively arranged as filtering purposes simultaneously, eliminates the DM EMI on circuit.
Claims (4)
1. a kind of thin film capacitor for electric vehicle of integrated EMC schemes comprising shell, be provided in the shell copper bar and
Capacitor body, which is characterized in that the copper bar is internal composite lamainated structure, including extraction electrode and compound upper copper
Row, intermediate insulation plate, lower layer's copper bar, the extraction electrode are divided into two groups, and one group of exit connects IGBT module, another group of extraction
End is busbar input terminal, and the capacitor body is directly connected to lower layer's copper bar on one side, another side connects institute by connecting plate
Upper layer copper bar is stated, a pair of of Y capacitance is provided between the upper layer copper bar and lower layer's copper bar, the close busbar input terminal,
The exit of the Y capacitance connects grounding insert-pin.
2. a kind of thin film capacitor for electric vehicle of integrated EMC schemes according to claim 1, which is characterized in that institute
It states busbar input end and is provided with magnet ring.
3. a kind of thin film capacitor for electric vehicle of integrated EMC schemes according to claim 1, it is characterised in that described
Capacitor body is set to lower layer's copper bar side, and the capacitor body is to be welded to connect lower layer's copper bar, institute on one side
It is copper coin to state connecting plate.
4. a kind of thin film capacitor for electric vehicle of integrated EMC schemes according to claim 1, it is characterised in that described
Capacitor body is flat single layer core subgroup, and thin-film width size is 10-25mm in the capacitor body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810122344.8A CN108565117A (en) | 2018-02-07 | 2018-02-07 | A kind of thin film capacitor for electric vehicle of integrated EMC schemes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810122344.8A CN108565117A (en) | 2018-02-07 | 2018-02-07 | A kind of thin film capacitor for electric vehicle of integrated EMC schemes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108565117A true CN108565117A (en) | 2018-09-21 |
Family
ID=63531232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810122344.8A Pending CN108565117A (en) | 2018-02-07 | 2018-02-07 | A kind of thin film capacitor for electric vehicle of integrated EMC schemes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108565117A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109755023A (en) * | 2019-01-31 | 2019-05-14 | 德威(苏州)新能源有限公司 | A kind of modularization capacitor group device |
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| CN201976383U (en) * | 2011-03-01 | 2011-09-14 | 山东奥太电气有限公司 | Mounting device of IGBT component for welding machine |
| CN102693838A (en) * | 2011-09-16 | 2012-09-26 | 日精电机(扬州)有限公司 | Thin film capacitor |
| KR101194063B1 (en) * | 2011-06-28 | 2012-10-22 | 삼화콘덴서공업주식회사 | Package type thin film capacitor |
| KR20150072477A (en) * | 2013-12-19 | 2015-06-30 | 현대자동차주식회사 | Film capacitor module for suppressing noise and Inverter for vehicle having the same |
| CN104934223A (en) * | 2015-06-28 | 2015-09-23 | 无锡宸瑞新能源科技有限公司 | Thin-film capacitor for automobile |
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| CN106061145A (en) * | 2016-06-14 | 2016-10-26 | 珠海英搏尔电气股份有限公司 | Electrical component assembly for electric vehicle |
| CN206922646U (en) * | 2017-04-01 | 2018-01-23 | 苏州汇川联合动力系统有限公司 | Motor in electric automobile driver and high voltage bus filter circuit |
| CN207868074U (en) * | 2018-02-07 | 2018-09-14 | 无锡宸瑞新能源科技有限公司 | The thin film capacitor for electric vehicle of integrated EMC schemes |
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2018
- 2018-02-07 CN CN201810122344.8A patent/CN108565117A/en active Pending
Patent Citations (12)
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|---|---|---|---|---|
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| CN101154932A (en) * | 2006-09-26 | 2008-04-02 | 艾默生网络能源系统有限公司 | EMC filter circuit |
| CN201976383U (en) * | 2011-03-01 | 2011-09-14 | 山东奥太电气有限公司 | Mounting device of IGBT component for welding machine |
| KR101194063B1 (en) * | 2011-06-28 | 2012-10-22 | 삼화콘덴서공업주식회사 | Package type thin film capacitor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109755023A (en) * | 2019-01-31 | 2019-05-14 | 德威(苏州)新能源有限公司 | A kind of modularization capacitor group device |
| CN109755023B (en) * | 2019-01-31 | 2024-03-29 | 德威(苏州)新能源有限公司 | Modularized capacitor bank device |
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