CN-224232521-U - Double-wall hollow Y2 film capacitor and new energy automobile capacitor module

Abstract

The utility model discloses a double-wall hollow Y2 film capacitor and a new energy automobile capacitor module, wherein the double-wall hollow Y2 film capacitor comprises a capacitor core and a packaging shell for packaging the capacitor core, a packaging cavity is arranged in the packaging shell, and hollow areas which are arranged around the packaging cavity are also arranged in each side wall of the packaging shell. The utility model obviously improves the mechanical strength and rigidity of the packaging shell by integrally utilizing the design of the double-wall hollow shell, and the capacitor core can buffer the transmission of stress through the hollow area after being packaged by epoxy resin, so that the stress is prevented from being concentrated on the capacitor core, the stable structure of a film and the like in the capacitor core is ensured, and the stable electrical performance of the capacitor is further ensured. The improved Y2 film capacitor can stably operate, and compared with a traditional capacitor, the application range of the capacitor is effectively widened, so that the capacitor can meet the working requirement of higher voltage level.

Inventors

• ZHANG YONGPAN

Assignees

• 上海鹰峰电子科技股份有限公司

Dates

Publication Date

20260512

Application Date

20250508

Claims (3)

1. 1. The double-wall hollow Y2 film capacitor comprises a capacitor core (200) and is characterized by further comprising a packaging shell (100) for packaging the capacitor core (200), wherein a packaging cavity is formed in the packaging shell (100), and hollow areas (110) which are arranged around the packaging cavity are further formed in each side wall of the packaging shell (100).
2. 2. The double-wall hollow Y2 film capacitor as set forth in claim 1, wherein the surface of said capacitor core (200) is further covered with an encapsulation layer (300), and the encapsulation layer (300) is made of epoxy resin.
3. 3. A new energy automobile capacitor module, characterized in that the capacitor module is internally provided with the double-wall hollow type Y2 film capacitor as claimed in any one of claims 1-2.

Description

Double-wall hollow Y2 film capacitor and new energy automobile capacitor module Technical Field The utility model relates to the technical field of relay testing, in particular to a double-wall hollow Y2 film capacitor and a new energy automobile capacitor module. Background In the field of electronic equipment manufacturing, capacitors are widely used as key electronic components in various circuits, wherein Y2 film capacitors play an important role in the aspects of alternating current power supply filtering, electromagnetic interference resistance and the like. The existing Y2 film capacitor has a plurality of defects in structural design, cannot meet the current and future application requirements, and mainly comprises the following aspects: Conventional Y2 film capacitors typically employ a single layer housing to encapsulate the capacitive core. In practical use, especially in some fields with high requirements on the stability of the capacitor, such as automotive electronics, industrial control and other fields, the mechanical strength and rigidity of the single-layer shell are limited. When receiving outside impact, vibration or receive certain pressure in the production process, the shell takes place to warp easily, and then influences the normal work of electric capacity core, leads to the electric capacity core to damage even, has reduced the reliability and the life of condenser. The existing capacitor shell is difficult to effectively resist the stress generated in the curing process of the packaging layer. These stresses can act on the core, possibly causing the displacement and deformation of the film inside the core, affecting the electrical performance of the capacitor, such as increased capacitance deviation, increased loss, etc., and seriously failing the capacitor. In addition, at different working environment temperatures, temperature stress concentration can occur due to different thermal expansion coefficients of materials such as the capacitor core, the shell and the like. The stress concentration acts on the internal structure of the capacitor for a long time, so that key parts such as internal connection points, films and the like can be gradually damaged, and the service life of the capacitor is further shortened. Conventional capacitor structural designs do not provide enough buffer space for the capacitive core to cope with electric field variations in high voltage environments. When the voltage exceeds a certain threshold, partial discharge phenomenon is easy to occur, so that the performance of the capacitor can be reduced, serious faults such as short circuit and the like can be caused, and the use of the capacitor in a high-voltage application scene is limited. Disclosure of utility model Aiming at the defects in the prior art, the utility model aims to provide a double-wall hollow Y2 film capacitor which can improve the mechanical strength, effectively resist stress, enhance the voltage resistance performance and effectively meet the requirements of the electronic equipment industry on high-performance capacitors. The technical scheme includes that the double-wall hollow Y2 film capacitor comprises a capacitor core and further comprises an encapsulation shell for encapsulating the capacitor core, wherein an encapsulation cavity is arranged in the encapsulation shell, and hollow areas which are arranged around the encapsulation cavity are further arranged in each side wall of the encapsulation shell. In the technical scheme, the shell is used for packaging the capacitor core, the hollow area is arranged in the shell and surrounds the packaging cavity, so that the shell forms a double-wall hollow shell, the shell has higher mechanical strength and rigidity, stress generated in the epoxy resin curing process can be effectively resisted, the stress generated in the capacitor packaging curing process can be absorbed and dispersed, and meanwhile, the damage to the internal structure of the capacitor due to stress concentration caused by temperature change can be reduced. In addition, the hollow structure can provide extra buffer space, further absorb and disperse stress, and improve the voltage resistance of the capacitor. Preferably, the surface of the capacitor core is further coated with an encapsulation layer, and the encapsulation layer is made of epoxy resin. The utility model also provides a new energy automobile capacitor module, wherein the hollow Y2 thin film capacitor with the middle double walls is arranged in the capacitor module. After the capacitor module is installed, the capacitor module can be used for inhibiting electromagnetic interference and improving electrical safety. The utility model has the beneficial effects that through unique structural design and material selection, the utility model has obvious beneficial technical effects in the aspects of capacitor performance improvement, internal structure protection, application expansion and the like, and has