Capacitor Movable Terminal Fixing for Inverter Assembly
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Solution Overview
Problem
The assembly of inverter systems in hybrid automobiles is inefficient due to the need to route movable terminals within the inverter case without contact with other components and while minimizing space, which complicates the process and reduces work efficiency.
Innovation Solution
A capacitor design with a movable terminal that includes a fixing portion and a temporary fixing portion, allowing the terminal to be securely extended and adjusted within the capacitor case, reducing the need for internal routing and minimizing space requirements, thereby improving assembly efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the movable terminal is routed inside the inverter case to connect to constituent elements, then electrical connection is achieved, but the routing process becomes complex and work efficiency decreases
Solution Approach 1:
The movable terminal is preliminarily fixed to the capacitor case with a fixing portion before assembly, and the extending portion is pre-configured to extend from the capacitor. This preliminary arrangement eliminates the need for complex internal routing during final assembly, improving work efficiency while ensuring reliable electrical connection.
Solution Approach 2:
The capacitor case serves as an intermediary structure that houses the movable terminal's fixing portion and supports the extending portion. This intermediary structure simplifies the connection process by providing a pre-organized pathway for the terminal, reducing assembly complexity.
2Reliability
If the movable terminal is routed inside the inverter case, then connection is established, but space requirements increase due to routing constraints
Solution Approach 1:
The movable terminal is extracted from the capacitor case as an extending portion that protrudes outward. This extraction eliminates the need for the terminal to be routed through the confined internal space of the inverter case, reducing space requirements while maintaining connection stability.
Solution Approach 2:
Instead of routing the terminal horizontally through the inverter case interior, the terminal extends in a different dimension - protruding outward from the capacitor case. This dimensional change bypasses spatial constraints within the inverter case, minimizing the space required for routing.
3Productivity
If the movable terminal extends from the capacitor case, then assembly is simplified, but the terminal may contact other constituent elements
Solution Approach 1:
The fixing portion preliminarily secures the movable terminal at a specific position on the capacitor case, and the extending portion is pre-configured to extend in a controlled direction. This preliminary positioning ensures the terminal reaches its destination without contacting other components, maintaining assembly efficiency while preventing harmful contact.
Solution Approach 2:
The fixing portion and extending portion configuration creates a preliminary anti-action against potential contact with other components. By pre-positioning the terminal with proper clearance and direction control, the design prevents the terminal from being drawn under or contacting other constituent elements during assembly and operation.
Data Source
AI summary
A capacitor including: a capacitor case having a bottom portion and an opening; a capacitor element accommodated in the capacitor case and including a first electrode E1 and a second electrode E2; a first fixed terminal T1 connected to the first electrode E1; a second fixed terminal T2 connected to the second electrode E2; a movable terminal partly accommodated in the capacitor case and including a free end; and a fixing portion that fixes a first portion of the movable terminal, wherein the first fixed terminal T1 and the second fixed terminal T2 each have an extending portion extending toward an outside of the capacitor case, the free end is led to the outside of the capacitor case, and the fixing portion fixes the first portion such that the free end extends in the extending direction of the extending portions.