CN112908710A - Aluminum electrolytic capacitor module integrated with Y capacitor - Google Patents
Aluminum electrolytic capacitor module integrated with Y capacitor Download PDFInfo
- Publication number
- CN112908710A CN112908710A CN202110195103.8A CN202110195103A CN112908710A CN 112908710 A CN112908710 A CN 112908710A CN 202110195103 A CN202110195103 A CN 202110195103A CN 112908710 A CN112908710 A CN 112908710A
- Authority
- CN
- China
- Prior art keywords
- capacitor
- aluminum electrolytic
- electrolytic capacitor
- conductive copper
- module
- 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 114
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 61
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 60
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910052802 copper Inorganic materials 0.000 claims abstract description 34
- 239000010949 copper Substances 0.000 claims abstract description 34
- 230000005611 electricity Effects 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000004065 semiconductor Substances 0.000 claims description 2
- 239000003985 ceramic capacitor Substances 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 claims 1
- 238000003466 welding Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 239000011888 foil Substances 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Inverter Devices (AREA)
Abstract
An aluminum electrolytic capacitor module integrated with a Y capacitor comprises an aluminum electrolytic capacitor, positive and negative conductive copper bars, the Y capacitor and a ground wire, wherein the aluminum electrolytic capacitor is electrically connected with the positive and negative conductive copper bars correspondingly; and meanwhile, the Y capacitor effectively inhibits the common-mode interference of the power electronic device, and the EMC reliability of the whole power electronic device system is improved.
Description
The technical field is as follows:
the invention relates to an aluminum electrolytic capacitor integrated module, in particular to a Y capacitor and aluminum electrolytic capacitor integrated module which is used for inhibiting EMI electromagnetic interference of a power electronic device, improving EMC reliability, preventing aluminum foil polarization of a negative electrode of an aluminum electrolytic capacitor and prolonging the service life of the aluminum electrolytic capacitor.
Background art:
the power electronic device comprises a switching power supply, an inverter or a frequency converter and other power supply equipment, the output voltage and frequency are adjusted by the switch of the IGBT/MOSFET semiconductor device, and the actually required power supply voltage can be provided according to the load so as to achieve the aim of energy saving.
The power electronic device adopts a pulse modulation technology (PWM), and can superpose higher harmonics at an output end, the higher harmonics can generate differential mode interference at the output end, and the higher harmonics are mainly transmitted on a positive electrode and a negative electrode of a direct current bus at an input side and an alternating current cable from the aspect of a differential mode current transmission path; at the moment when the IGBT/MOSFET tube is switched on or off, high Du/Dt can be generated, parasitic capacitance to the ground is continuously charged and discharged through a switching device, a metal lead, a radiating fin, a shell and the like in a loop, common mode current is generated, and radiation interference can be generated by the differential mode current and the common mode current.
A power wire in the power electronic device generates strong radiation to form a high-efficiency radiation antenna; when the power electronic complete machine system works, a loop formed by differential mode current can form a loop antenna, and electromagnetic interference is radiated outwards; the power electronic device generally adopts a metal shell for electromagnetic shielding, and when a gap exists in the shielding shell, a gap antenna is formed to radiate electromagnetic interference outwards; a large amount of radiated noise interference signals not only affect the radio equipment around the power electronic device, but also affect the operational reliability of the electronic control unit of the power electronic device by conduction or radiation, especially the electronic control unit with high electromagnetic sensitivity in the high-voltage high-power electronic device system, and the problem of electromagnetic compatibility EMC caused by this is particularly prominent and needs to be paid more attention.
In order to balance voltage fluctuation caused by IGBT switches in the power electronic integrated device, a power bus capacitor is required to be adopted for filtering so as to stabilize voltage.
Generally, aluminum electrolytic capacitors are discrete structures and include products with lead wires, soldering lugs, bolts and other leading-out modes, users need to combine the products in series and parallel, and integrate various performance parameters to adapt to indexes of the products such as voltage, power, ripple current, correction frequency, temperature coefficient and the like, so that a power bus filter capacitor of the capacitor combination for power electronic devices is formed.
The aluminum electrolytic capacitor module integrating the discrete aluminum electrolytic capacitors into a whole can enhance the heat dissipation capability and optimize the electrical performance, and the small aluminum electrolytic capacitor integrated module products disclosed in patent 202011082745.9 or 202011082897.9 greatly improve the ripple current capability, the high-frequency characteristic, the long service life and other electrical properties.
Due to the fact that multiple electromagnetic radiation noises exist in a power electronic system device, particularly higher harmonics exist on a power direct-current bus, and an aluminum electrolytic capacitor cannot effectively absorb or filter out the higher harmonics smoothly, reverse pulse current formation can be conducted on a negative electrode foil by electrolyte inside the aluminum electrolytic capacitor, and then a large amount of gas and heat are generated to enable the aluminum electrolytic capacitor to age and fail quickly.
Safety capacitors are generally used for preventing electric shock and protecting personal safety, X capacitors are used for suppressing circuit differential mode interference, and Y capacitors are used for suppressing circuit common mode interference.
The invention content is as follows:
the invention provides an aluminum electrolytic capacitor module integrated with a Y capacitor, which aims to prevent aluminum foil polarization of a cathode of an aluminum electrolytic capacitor, prolong the service life and improve the reliability of the aluminum electrolytic capacitor, and simultaneously help to improve EMI electromagnetic interference of a power electronic complete machine system and improve EMC reliability.
The utility model provides an integrated Y electric capacity's aluminum electrolytic capacitor module, includes aluminum electrolytic capacitor, positive negative pole conductive copper bar, Y electric capacity and earth connection, wherein aluminum electrolytic capacitor positive negative pole and positive negative pole conductive copper bar correspond the electricity and connect, and the Y electric capacity has two kinds of electricity of positive pole conductive copper bar ground wire and negative pole conductive copper bar ground wire to be connected, and Y electric capacity and aluminum electrolytic capacitor constitute the circuit parallel structure on positive negative pole conductive copper bar.
The Y capacitor is integrated through the aluminum electrolytic capacitor module, so that the problem that the electrolyte in the aluminum electrolytic capacitor carries out reverse pulse current formation on the negative electrode foil due to higher harmonics existing on a power direct current bus is effectively solved, and the aluminum electrolytic capacitor is prevented from aging and losing efficacy in advance; and meanwhile, the Y capacitor effectively inhibits the common-mode interference of the power electronic device, and the EMC reliability of the whole power electronic device system is improved.
Description of the drawings:
the above and other features of the present invention will be presented in the following description with reference to the accompanying drawings;
FIG. 1: the structure diagram of the circuit of the aluminum electrolytic capacitor module integrated with the Y capacitor;
FIG. 2: the positive and negative electrode conductive copper bars, the Y capacitor and the aluminum electrolytic capacitor are assembled together;
FIG. 3: the Y capacitor and the grounding wire are assembled schematically;
FIG. 4: and the appearance schematic diagram of the integrated Y capacitor of the aluminum electrolytic capacitor module.
The figures in the drawings represent the following:
1-positive electrode conductive copper bar
11-positive electrode conductive copper bar negative electrode terminal through hole
2-negative electrode conductive copper bar
3-Y capacitor
31-positive electrode conductive copper bar ground wire bridging capacitor
32-negative electrode conductive copper bar ground wire cross-over capacitor
4-aluminium electrolytic capacitor
5-earth wire
51-ground terminal
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to the following detailed description and accompanying drawings. In the following embodiments, numerous details are set forth in order to provide a better understanding of the present invention. However, those skilled in the art will readily recognize that certain features may be replaced or omitted by other elements, materials, methods, or the like in various instances. In some cases, related operations are not shown or described in the specification, so as to avoid obscuring the core of the present application from excessive description, and to enable those skilled in the art to fully understand the related operations from the description in the specification and the general knowledge in the art.
The following are preferred embodiments:
as shown in fig. 1, which is a circuit structure diagram of an aluminum electrolytic capacitor module integrated with Y capacitors, a plurality of aluminum electrolytic capacitors 4 are connected in parallel with two series Y capacitors 31 and 32, and bridged between positive and negative conductive copper bars 1 and 2, and a ground wire 5 is led out between the two series Y capacitors 31 and 32.
As shown in fig. 2, the assembly diagram of the positive and negative electrode conductive copper bars, the Y capacitor and the aluminum electrolytic capacitor is shown, the positive and negative electrode laminated conductive copper bars 1 and 2 at the front part of the aluminum electrolytic capacitor module are connected in parallel with the aluminum electrolytic capacitor 4, integrated inside the capacitor module and correspondingly electrically connected, meanwhile, the Y capacitor 31 is electrically connected with the positive electrode conductive copper bar 1, and the lead of the Y capacitor 32 passes through the positive electrode conductive copper bar through hole 11 and is electrically connected with the negative electrode conductive copper bar 2.
As shown in fig. 3, which is an assembly diagram of the Y capacitor and the ground line, the lead wires on the other sides of the Y capacitors 31 and 32 are electrically connected to the ground copper bar 5, so that the Y capacitor 31 is formed to bridge the positive conductive copper bar 1 and the ground line 5, the Y capacitor 31 is connected to the negative conductive copper bar 2 and the ground line 5, and the ground copper bar 5 has a through terminal 51.
As shown in fig. 4, which is an appearance schematic diagram of an integrated Y capacitor of an aluminum electrolytic capacitor module, a bus terminal structure is arranged at the front end of the aluminum electrolytic capacitor module, positive and negative conductive copper bars 1 and 2 are electrically connected with positive and negative power buses of the whole machine, and a grounding wire adapter terminal 51 is arranged at the rear end of the aluminum electrolytic capacitor module and is led out from the interior of the aluminum electrolytic capacitor module for electrically connecting with a grounding wire of the whole machine.
The invention has been described above using specific examples, which are only intended to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.
Claims (10)
1. The utility model provides an integrated Y electric capacity's aluminum electrolytic capacitor module, includes aluminum electrolytic capacitor, positive negative pole conductive copper bar, Y electric capacity and earth connection, wherein aluminum electrolytic capacitor positive negative pole and positive negative pole conductive copper bar correspond the electricity and connect, and the Y electric capacity has two kinds of electricity of positive pole conductive copper bar earth connection and negative pole conductive copper bar earth connection to be connected, and Y electric capacity and aluminum electrolytic capacitor constitute the parallel circuit structure on positive negative pole conductive copper bar.
2. The aluminum electrolytic capacitor module of claim 1, wherein the aluminum electrolytic capacitor module comprises: including any structural manner of aluminum electrolytic capacitor module.
3. The aluminum electrolytic capacitor module of claim 1, wherein the aluminum electrolytic capacitor module comprises: the aluminum electrolytic capacitor bank can be connected to the positive and negative conductive copper bars in parallel, or can be connected in series or in series-parallel.
4. The Y-capacitor integrated aluminum electrolytic capacitor module as claimed in claim 1, wherein the Y-capacitor is characterized in that: any kind of capacitor such as a ceramic capacitor or a film capacitor may be used.
5. The aluminum electrolytic capacitor module integrated with Y capacitor as claimed in claims 1 and 4, wherein the Y capacitor is characterized in that: one Y capacitor can be used in a bridging mode, and a plurality of Y capacitors can be used in a bridging mode in parallel.
6. The Y-capacitor integrated aluminum electrolytic capacitor module as claimed in claim 1, wherein the Y-capacitor electrical connection is characterized by: the Y capacitor can be connected with the positive conductive copper bar and the negative conductive copper bar in series and simultaneously electrically connected with the ground wire in two ways, and the Y capacitor can be independently electrically connected with the positive conductive copper bar or the negative conductive copper bar and the ground wire in one way.
7. The aluminum electrolytic capacitor module integrated with Y capacitor as claimed in claim 1, 5, wherein the position of Y capacitor is characterized by: the Y capacitor or the Y capacitor bank can be internally arranged in the aluminum electrolytic capacitor module or externally hung outside the aluminum electrolytic capacitor module.
8. The aluminum electrolytic capacitor module integrated with Y capacitor as claimed in claim 1, 5, 7, wherein the electrical connection of the Y capacitor or the Y capacitor bank is characterized in that: the welding mode or the screw tightening mode can be adopted to electrically connect the synchronous aluminum electrolytic capacitor module with the power semiconductor module.
9. The Y-capacitor integrated aluminum electrolytic capacitor module as claimed in claim 1, wherein the ground line is characterized by: the metal conducting wire can be a metal conducting bar in any shape.
10. The aluminum electrolytic capacitor module with integrated Y capacitor as claimed in claims 1 and 8, wherein the grounding line is characterized by: the direct leading-out can be connected with the ground wire of the whole machine, and the switching terminal can also be arranged and then connected with the ground wire of the whole machine.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110195103.8A CN112908710A (en) | 2021-02-19 | 2021-02-19 | Aluminum electrolytic capacitor module integrated with Y capacitor |
PCT/CN2021/138356 WO2022151899A1 (en) | 2021-01-15 | 2021-12-15 | Aluminum electrolytic capacitor integrated module |
US18/571,147 US20240212944A1 (en) | 2021-01-15 | 2021-12-15 | Aluminum electrolytic capacitor integrated module |
EP21918122.9A EP4280241A1 (en) | 2021-01-15 | 2021-12-15 | Aluminum electrolytic capacitor integrated module |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110195103.8A CN112908710A (en) | 2021-02-19 | 2021-02-19 | Aluminum electrolytic capacitor module integrated with Y capacitor |
Publications (1)
Publication Number | Publication Date |
---|---|
CN112908710A true CN112908710A (en) | 2021-06-04 |
Family
ID=76124200
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202110195103.8A Pending CN112908710A (en) | 2021-01-15 | 2021-02-19 | Aluminum electrolytic capacitor module integrated with Y capacitor |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN112908710A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022151899A1 (en) * | 2021-01-15 | 2022-07-21 | 周旺龙 | Aluminum electrolytic capacitor integrated module |
-
2021
- 2021-02-19 CN CN202110195103.8A patent/CN112908710A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022151899A1 (en) * | 2021-01-15 | 2022-07-21 | 周旺龙 | Aluminum electrolytic capacitor integrated module |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN102104332A (en) | Integrated high-power chopper and high-frequency switch power supply | |
CN210839411U (en) | Filter module, motor controller and motor controller assembly | |
CN112908710A (en) | Aluminum electrolytic capacitor module integrated with Y capacitor | |
CN201054848Y (en) | Electromagnetic interference restraint device, electronic ballast system and compact energy-saving lamp | |
CN117294151A (en) | Power converter | |
CN216905797U (en) | Modular DC-DC energy storage adapter | |
CN214592401U (en) | Integrated power unit module | |
CN207304392U (en) | A kind of high voltage frequency conversion power unit connected by pcb board | |
CN113381593B (en) | Front-end auxiliary circuit of high-power capacitive load instrument | |
CN213783127U (en) | IGBT module structure | |
CN217824753U (en) | High-power inverter circuit IGBT power device peak voltage suppression circuit board | |
CN219086990U (en) | Integrated capacitor, motor controller and motor assembly | |
WO2023044848A1 (en) | Switching circuit and power supply device | |
CN219437423U (en) | Air-cooled heat dissipation charger power module | |
CN216873085U (en) | Full-wave rectification-based reverse connection prevention isolation filter circuit for direct-current power supply | |
CN205178897U (en) | Dc -to -ac converter and power mainboard thereof | |
CN218526296U (en) | Filter of hybrid electric vehicle motor controller and hybrid electric vehicle | |
CN218102976U (en) | Compact type power unit module | |
CN213125829U (en) | 80 megawatt high-voltage high-power frequency converter structure | |
CN217115943U (en) | Motor power supply system and motor unit | |
CN214228115U (en) | Power supply filter circuit and power supply filter device | |
CN214674857U (en) | High-power LED power supply | |
CN219145270U (en) | Silicon controlled series resonance power unit | |
CN216794835U (en) | Miniaturized economical power unit module | |
CN215956281U (en) | High-reliability AC/DC conversion device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination |