CN-122025421-A - Capacitor and vehicle

CN122025421ACN 122025421 ACN122025421 ACN 122025421ACN-122025421-A

Abstract

The invention discloses a capacitor and a vehicle, and relates to the technical field of capacitors. The capacitor comprises a shell, a sealing piece and at least one capacitor component, the capacitor component is arranged in the installation cavity through an opening of the shell, and two sides of an insulating plate of the capacitor component are respectively provided with a limiting groove, so that the capacitor component is limited in the shell along the front-back left-right direction, and meanwhile, the capacitor component can be limited to be separated from the installation cavity upwards by being clamped in the clamping grooves. After the capacitor assembly is fixed in the shell, sealing materials such as epoxy resin and the like can be filled in the shell until the sealing materials are solidified to form a sealing element, so that the resistance of the capacitor to external impact and vibration is improved, the waterproof and dustproof performances of the capacitor are improved, the heat conduction and heat transfer capacity is improved, and different terminals are mutually insulated. Because the capacitor is limited by the limiting structure of the capacitor, the use of the jig can be canceled, the production cost is reduced, the production period is shortened, and the jig does not occupy the factory space.

Inventors

LI YONGKANG
LI HAOFENG
LI JIANHAO
MIBU TAKASHI
NAKATA TAKAHIRO

Assignees

松下电子部品（江门）有限公司

Dates

Publication Date: 20260512
Application Date: 20260130

Claims (10)

1. A capacitor, comprising: The shell is provided with an opening and at least one mounting cavity, two opposite wall surfaces of the mounting cavity are respectively provided with a limit groove, the limit grooves extend along the up-down direction and penetrate through the upper end opening of the mounting cavity, and the inner wall of the mounting cavity is also provided with one of a buckle or a clamping groove; the capacitor assembly comprises a capacitor core, an insulating plate and two terminals, wherein the two terminals are arranged at intervals and are respectively connected with the insulating plate, the lower ends of the terminals are connected with the capacitor core, at least one of the two terminals is provided with the buckle or the other one of the clamping grooves, the capacitor assembly is arranged in the mounting cavity, two sides of the insulating plate are respectively arranged in the limiting groove and are abutted with the bottom wall of the limiting groove, the limiting groove is used for limiting the position and downward displacement of the insulating plate along the front, back, left and right directions, and the buckle is clamped with the clamping groove so as to limit the capacitor assembly to be separated from the mounting cavity upwards; and the sealing piece is connected with the shell and seals the opening, and the terminal penetrates through the sealing piece.
2. The capacitor of claim 1, wherein a plurality of partitions are arranged in the shell at intervals along a first direction, the partitions divide an inner cavity of the shell into a plurality of mounting cavities, the number of the capacitor assemblies is the same as that of the mounting cavities, and the capacitor assemblies are arranged in the mounting cavities in a one-to-one correspondence manner.
3. The capacitor of claim 2, wherein the limiting grooves are formed in two sides of the partition plate along the first direction, two blocking ribs are arranged on the side wall of the shell, facing the partition plate, at intervals along the second direction, groove bodies are arranged on one side, facing the other blocking rib, of the blocking ribs, the limiting grooves are formed by the groove bodies of the two blocking ribs, and the second direction is perpendicular to the first direction.
4. The capacitor of claim 3, wherein the inner wall of the housing is provided with a buckle, the buckle is positioned between the two retaining ribs, and the terminal closest to the buckle is provided with the clamping groove matched with the buckle in a clamping way.
5. The capacitor of claim 2, wherein the terminal is provided with the clamping groove, the buckle is connected to the partition board, the buckle comprises a hook portion, the width of the hook portion along the first direction gradually increases along the up-down direction, the hook portion is clamped with the clamping groove, and the lower end face of the hook portion is arranged at intervals with the bottom wall of the clamping groove.
6. The capacitor of claim 5, wherein at least a portion of the separator has a notch extending through an upper end of the separator, a bottom wall of the notch has a post extending in an up-down direction, both sides of the post in the first direction are provided with the snap fastener, and a passage groove is formed between the post and a side wall of the notch.
7. The capacitor of claim 5, wherein the separator has two notches extending through an upper end of the separator, each notch has a post, the side of the post facing the adjacent terminal has the fastener, and a passage groove is formed between the post and a side wall of the notch.
8. The capacitor of claim 1, wherein the lower end surface of the insulating plate and the upper end surface of the capacitor core are spaced apart.
9. The capacitor of claim 8, wherein the lower end surface of the insulating plate is provided with at least one protruding rib, and the protruding rib is abutted against the upper end surface of the capacitor core, or the protruding rib and the upper end surface of the capacitor core are arranged at intervals.
10. Vehicle, characterized in that it comprises a capacitor according to any one of claims 1 to 9.

Description

Capacitor and vehicle Technical Field The invention relates to the technical field of capacitors, in particular to a capacitor and a vehicle. Background The film capacitor is a capacitor corresponding to high voltage and large current, is used for a hybrid power vehicle/electric vehicle and an industrial conversion circuit, and has the functions of smoothing, absorbing, noise suppression and the like. The capacitor comprises a shell and a capacitor component, wherein the capacitor component is required to be filled with epoxy resin from an opening of the shell after being mounted on the shell. Before injection, a terminal limiting injection jig is required to limit the capacitor assembly so as to fix the relative position of the capacitor assembly in the shell, and epoxy resin is injected subsequently. However, by adopting the scheme, the capacitors of different types all need terminal limiting injection type jigs with corresponding shapes, so that the production cost is high, the period is long, and after the production period is finished, the jigs can occupy the factory space and waste resources. Disclosure of Invention The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the capacitor, the limit structure of the capacitor is used for realizing limit, the use of the jig can be canceled, the production cost is reduced, the production period is shortened, and the jig does not occupy the factory space. The invention also provides a vehicle with the capacitor. The capacitor comprises a shell, a capacitor body and a capacitor body, wherein the shell is provided with an opening and at least one mounting cavity, two opposite wall surfaces of the mounting cavity are respectively provided with a limit groove, the limit grooves extend along the up-down direction and penetrate through the upper end opening of the mounting cavity, and one of a buckle or a clamping groove is further arranged on the inner wall of the mounting cavity; the capacitor assembly comprises a capacitor core, an insulating plate and two terminals, wherein the two terminals are arranged at intervals and are respectively connected with the insulating plate, the lower ends of the terminals are connected with the capacitor core, at least one of the two terminals is provided with the buckle or the other one of the clamping grooves, the capacitor assembly is arranged in the mounting cavity, two sides of the insulating plate are respectively arranged in the limiting groove and are abutted with the bottom wall of the limiting groove, the limiting groove is used for limiting the position and downward displacement of the insulating plate along the front, back, left and right directions, and the buckle is clamped with the clamping groove so as to limit the capacitor assembly to be separated from the mounting cavity upwards; and the sealing piece is connected with the shell and seals the opening, and the terminal penetrates through the sealing piece. The capacitor provided by the embodiment of the invention has at least the following beneficial effects: Install in the installation cavity through setting up the opening that the electric capacity subassembly passes through the shell, and the spacing groove is located respectively to electric capacity subassembly's insulation board both sides to limit electric capacity subassembly along the position of left and right directions around in the casing, the buckle joint is in the draw-in groove simultaneously, can restrict electric capacity subassembly upwards break away from the installation cavity. Therefore, after the capacitor assembly is fixed in the shell, sealing materials such as epoxy resin and the like can be filled in the shell until the sealing materials are solidified to form a sealing element, so that the resistance of the capacitor to external impact and vibration is improved, the waterproof, dustproof and dampproof performances of the capacitor are improved, the heat conduction and heat transfer capacity is improved, and different terminals are mutually insulated. Because the capacitor is limited by the limiting structure of the capacitor, the use of the jig can be canceled, the production cost is reduced, the production period is shortened, and the jig does not occupy the factory space. According to some embodiments of the invention, a plurality of partition boards are arranged in the shell at intervals along the first direction, the partition boards divide the inner cavity of the shell into a plurality of installation cavities, the number of the capacitor assemblies is the same as that of the installation cavities, and the capacitor assemblies are installed in the installation cavities in a one-to-one correspondence manner. According to some embodiments of the present invention, the two sides of the partition board along the first direction are respectively provided with the limit groove, the side wall of the hous