HV Terminal Sealing Structure for Airtight Battery Modules
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Solution Overview
Problem
Conventional battery modules suffer from moisture penetration through exposed high voltage (HV) terminals, leading to performance degradation and durability issues.
Innovation Solution
A battery module with airtightness to the HV terminal is designed, featuring a sealing part that is inserted and fastened to the battery module case, allowing electrical connection while preventing external moisture ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the HV terminal is formed with an exposed structure to enable external electrical connection, then electrical connectivity is improved, but moisture penetration resistance deteriorates
Solution Approach 1:
A sealing part is introduced as an intermediary component between the battery module case and the external environment. This sealing part includes a through-hole that allows the HV terminal to pass through while maintaining airtightness, thus enabling electrical connection without direct exposure of the terminal to the external environment.
Solution Approach 2:
The HV terminal is nested within the sealing part, which itself is nested within the battery module case. This nested structure allows the terminal to be electrically connected externally while being protected by the sealing part that prevents moisture penetration.
2Ease of operation
If the HV terminal is exposed to the outside for electrical connection, then electrical connectivity is improved, but durability deteriorates
Solution Approach 1:
The sealing part serves as a protective intermediary that shields the HV terminal from direct exposure to the external environment. The through-hole in the sealing part allows electrical connection while the sealing structure protects the terminal from environmental factors that would reduce durability.
Solution Approach 2:
The sealing part acts as a protective shell or film that covers the HV terminal. This shell structure maintains airtightness while allowing the terminal to function electrically, thereby protecting the terminal and improving overall system durability.
3Ease of operation
If the HV terminal is exposed externally, then electrical connection is simplified, but performance stability deteriorates
Solution Approach 1:
The sealing part is introduced as a mediator between the internal battery environment and external connections. It maintains the internal environment stability while allowing electrical connection, thus preserving performance stability without compromising ease of connection.
Solution Approach 2:
The sealing part creates a protected, inert environment for the HV terminal by preventing exposure to external moisture and contaminants. This protected environment maintains the terminal's performance stability while the through-hole structure allows electrical connection to pass through.
Data Source
AI summary
The present invention relates to a battery module and a battery pack, and provides airtightness, particularly, a sealing property for a high voltage (HV) terminal, thereby preventing the penetration of moisture from the outside and increasing the durability of the battery pack.