CN217562408U - Take temperature monitoring function and EMC filtering's isolation metallized film capacitor subassembly - Google Patents
Take temperature monitoring function and EMC filtering's isolation metallized film capacitor subassembly Download PDFInfo
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- CN217562408U CN217562408U CN202220508960.9U CN202220508960U CN217562408U CN 217562408 U CN217562408 U CN 217562408U CN 202220508960 U CN202220508960 U CN 202220508960U CN 217562408 U CN217562408 U CN 217562408U
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Abstract
The utility model discloses an isolation metallized film capacitor component with temperature monitoring function and EMC filtering function, which comprises a shell, a positive copper bar, a negative copper bar, a capacitor core, a temperature sensor and an EMC filtering component; the capacitor core comprises a metallized film, a plurality of grooves are formed in the metallized film to divide the metallized film into a plurality of sub-regions, and the sub-regions of the metallized film are connected through fuse wires; the EMC filtering component comprises two groups of common-mode capacitors, a differential-mode capacitor and a magnetic ring; the temperature sensor comprises a sampling head, an outgoing line and a connector, the sampling head is located on the negative copper bar or the positive copper bar, the outgoing line is connected with the sampling head and the connector, the end part of the outgoing line extends out of the shell, and the connector is used for being connected with external equipment. The utility model discloses can avoid the emergence of excessive self-healing, do supervisory control to the security of condenser.
Description
Technical Field
The utility model relates to a film capacitor technical field specifically sets up an isolation metallization film capacitor subassembly of taking temperature monitoring function and EMC filtering.
Background
The metallized film capacitor has self-healing performance, and the occurrence mechanism is as follows: under the action of an external electric field, weak areas (such as holes and defects) of the medium of the metallized organic film are punctured, and the metal electrode layer disappears due to heat generated at the moment of puncturing, so that an insulating area is formed, and the open-circuit state is recovered. The self-healing characteristic can prolong the service life of the thin film capacitor, but excessive self-healing or self-healing with larger energy, such as continuous multilayer self-healing and even avalanche breakdown, occurs.
The high temperature generated when the metallized film capacitor self-heals can cause the organic plastic film to shrink and deform or even melt and carbonize, and the internal temperature of the capacitor can exceed the allowable range (105 ℃ allowed by the polypropylene film) to cause failure due to the high environmental temperature and the heat generated by the reactive power when the film capacitor works.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to solve above-mentioned prior art not enough, provide a can avoid excessive self-healing and high temperature's film capacitor subassembly.
In order to solve the technical problem, the utility model discloses a technical scheme be: an isolated metallized film capacitor component with a temperature monitoring function and EMC filtering comprises a shell, a positive copper bar, a negative copper bar, a capacitor core, a temperature sensor and an EMC filtering component; the capacitor core comprises a metallized film, a plurality of grooves are formed in the metallized film to divide the metallized film into a plurality of sub-regions, and the sub-regions of the metallized film are connected through fuse wires; the capacitor core is positioned between the positive copper bar and the negative copper bar, the end parts of the capacitor core are respectively welded on the positive copper bar and the negative copper bar, the positive copper bar and the negative copper bar are provided with an input terminal and an output terminal, the EMC filtering assembly comprises two groups of common-mode capacitors, a differential-mode capacitor and a magnetic ring, one end of each common-mode capacitor is connected with the negative copper bar or the positive copper bar, the other end of each common-mode capacitor is connected with a ground terminal, the two ends of each differential-mode capacitor are respectively connected with the negative copper bar and the positive copper bar, and the magnetic ring is sleeved outside the input terminal; the positive copper bar and the negative copper bar are positioned in the shell, the input terminal and the output terminal extend out of the shell, and an epoxy resin layer is arranged in the shell for sealing; the temperature sensor comprises a sampling head, an outgoing line and a connector, the sampling head is located on the negative electrode copper bar or the positive electrode copper bar, the outgoing line is connected with the sampling head and the connector, the end part of the outgoing line extends out of the shell, and the connector is used for being connected with external equipment.
Furthermore, three output terminals are respectively arranged on the positive copper bar and the negative copper bar and used for being connected with the IGBT, and the output terminals on the positive copper bar and the negative copper bar are in one-to-one correspondence and are arranged in parallel.
Further, the capacitor core comprises a gold spraying layer and two metalized films, the two metalized films are arranged in a staggered mode and wound into a cylindrical shape, one side of each metalized film is connected with the gold spraying layer, and a strip-shaped blank area is arranged on the other side of each metalized film; a plurality of T-shaped grooves are formed in the metallized film, and the T-shaped grooves are communicated with the strip-shaped blank area.
Further, a strip-shaped groove is arranged between the adjacent T-shaped grooves.
Can find out from above-mentioned technical scheme the utility model has the advantages of it is following: the thin film active area is divided into a plurality of small areas, the small areas are connected through the fuse wire, and when the self-healing energy of the active area exceeds a designed value, the fuse wire is disconnected, so that the occurrence of excessive self-healing is avoided; the temperature sensor with negative temperature coefficient is adopted, the temperature is sensed by testing the resistance value by utilizing the principle that the resistance value of the temperature sensor is reduced along with the rise of the temperature, and when the temperature is overhigh, the working voltage and the working current of the capacitor are reduced, so that the safety of the capacitor is managed and controlled.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an exploded view of the present invention;
FIG. 3 is a schematic diagram of a coiled material for a capacitor core according to the present invention;
fig. 4 is a schematic circuit diagram of the present invention.
Detailed Description
The following description will specifically explain embodiments of the present invention with reference to the accompanying drawings.
As shown in fig. 1, the utility model discloses a take temperature monitor function and EMC filtering's isolation metallization film capacitor subassembly includes shell 1, anodal copper bar 6, negative pole copper bar 7, electric capacity core 2, temperature sensor 4 and EMC filtering subassembly 5.
The specific structure of the capacitor core is shown in fig. 3, the capacitor core comprises a metal spraying layer 21 and two metallized films 22, the two metallized films are arranged in a staggered mode and wound into a column shape, the thickness of the metal spraying layer is 0.7mm, one side of each metallized film is connected with the metal spraying layer, a strip-shaped blank area is arranged on the other side of each metallized film, and the width of each metallized film is 1.5mm; the metallized film is provided with a plurality of T-shaped grooves 24, the metallized film is divided into a plurality of sub-regions, the T-shaped grooves 24 are communicated with the strip-shaped blank regions, and strip-shaped grooves 25 are further arranged between the adjacent T-shaped grooves. The metallized film sub-regions are connected through a fuse wire. Wherein the evaporated layer between the T-shaped groove 24 and the strip-shaped groove 25 may also function as a fuse. When the self-healing energy of the active area exceeds a designed value, the fuse wire is disconnected, so that the occurrence of excessive self-healing is avoided.
As shown in FIG. 4, the EMC filter assembly includes two sets of common mode capacitors 300V.AC 0.22uF + -10%, a differential mode capacitor and a magnetic ring, and a common mode capacitor C Y1 ＝C Y2 300V.AC 0.22uF +/-10%, common-mode capacitance C Y3 ＝C Y4 300V.AC 0.01uF +/-10%, one end of the common-mode capacitor is connected with the negative copper bar or the positive copper bar, the other end of the common-mode capacitor is connected with the grounding terminal, and the differential-mode capacitor C X =300v.ac 0.01auf ± 10%, the two ends of the differential mode capacitor are respectively connected with the negative copper bar and the positive copper bar, the magnetic ring L =1400nH ± 10%, and the magnetic ring is sleeved outside the input terminal. EMC filter module can filter inverseThe conductive interference generated by the transformer switch integrates and encapsulates the EMC filter module and the capacitor to form an assembly, and the assembly can be used for an electric vehicle motor controller, inhibits EMI noise and meets the national standard requirements.
During assembly, the positive copper bar and the negative copper bar are arranged in the shell 1, the input terminal and the output terminal need to extend out of the shell, and an epoxy resin layer is filled in the shell for sealing; the temperature sensor comprises a sampling head made of an NTC thermistor, an outgoing wire and a connector, wherein the outgoing wire is an AWG24# wire, and the connecting terminal is of a model number 5051510200. The sampling head is located negative pole copper bar or anodal copper bar, and sampling head and connector are connected to the lead-out wire, and the shell is stretched out to the lead-out wire tip, and the connector is used for connecting external equipment. The utility model discloses a negative temperature coefficient temperature sensor utilizes its resistance value principle that descends along with the temperature rise, through test resistance value and induced temperature, when the high temperature, reduces the operating voltage and the operating current of condenser, does supervisory control to the security of condenser.
The shell is further provided with a mounting foot component 3, the mounting foot component 3 is connected with the shell through a mortise and tenon structure, and the connecting beam is arranged inside the shell.
Claims (4)
1. The utility model provides a take temperature monitoring function and EMC filtering's isolation metallized film capacitor subassembly which characterized in that: the capacitor comprises a shell, a positive copper bar, a negative copper bar, a capacitor core, a temperature sensor and an EMC filtering component; the capacitor core comprises a metallized film, a plurality of grooves are formed in the metallized film to divide the metallized film into a plurality of sub-regions, and the sub-regions of the metallized film are connected through fuse wires; the capacitor core is positioned between the positive copper bar and the negative copper bar, the end parts of the capacitor core are respectively welded on the positive copper bar and the negative copper bar, the positive copper bar and the negative copper bar are provided with an input terminal and an output terminal, the EMC filtering assembly comprises two groups of common-mode capacitors, a differential-mode capacitor and a magnetic ring, one end of each common-mode capacitor is connected with the negative copper bar or the positive copper bar, the other end of each common-mode capacitor is connected with a grounding terminal, the two ends of each differential-mode capacitor are respectively connected with the negative copper bar and the positive copper bar, and the magnetic ring is sleeved outside the input terminal; the positive copper bar and the negative copper bar are positioned in the shell, the input terminal and the output terminal extend out of the shell, and an epoxy resin layer is arranged in the shell for sealing; temperature sensor includes sampling head, lead-out wire and connector, and the sampling head is located negative pole copper bar or anodal copper bar, and sampling head and connector are connected to the lead-out wire, and the shell is stretched out to the lead-out wire tip, and the connector is used for connecting external equipment.
2. The isolated metallized film capacitor package with temperature monitoring capability and EMC filtering of claim 1, wherein: three output terminals are respectively arranged on the positive copper bar and the negative copper bar and used for being connected with the IGBT, and the output terminals on the positive copper bar and the negative copper bar are in one-to-one correspondence and are arranged in parallel.
3. The isolated metallized film capacitor package with temperature monitoring capability and EMC filtering of claim 1, wherein: the capacitor core comprises a metal spraying layer and two layers of metalized films, wherein the two layers of metalized films are staggered and wound into a cylindrical shape, one side of each metalized film is connected with the metal spraying layer, and the other side of each metalized film is provided with a strip-shaped blank area for insulating between a positive electrode and a negative electrode; a plurality of T-shaped grooves are formed in the metallized film, and the T-shaped grooves are communicated with the strip-shaped blank area.
4. The isolated metallized film capacitor package with temperature monitoring capability and EMC filtering of claim 1, wherein: and a strip-shaped groove is also arranged between the adjacent T-shaped grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220508960.9U CN217562408U (en) | 2022-03-09 | 2022-03-09 | Take temperature monitoring function and EMC filtering's isolation metallized film capacitor subassembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220508960.9U CN217562408U (en) | 2022-03-09 | 2022-03-09 | Take temperature monitoring function and EMC filtering's isolation metallized film capacitor subassembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217562408U true CN217562408U (en) | 2022-10-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220508960.9U Active CN217562408U (en) | 2022-03-09 | 2022-03-09 | Take temperature monitoring function and EMC filtering's isolation metallized film capacitor subassembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217562408U (en) |
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2022
- 2022-03-09 CN CN202220508960.9U patent/CN217562408U/en active Active
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