Battery Module End Plate With Laser-Shielding Connector
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Solution Overview
Problem
Conventional battery modules face safety hazards due to battery explosions caused by laser beams passing through gaps during welding, which compromises the structural reliability and safety performance.
Innovation Solution
An end plate for a battery module featuring a connector with a light shielding part that blocks laser radiation, enhancing weldability and safety by preventing laser-induced explosions, and including a connector with a plugging part and connecting part that securely attaches to the side plate, along with a terraced light shielding part and elastomer for additional protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If laser welding is used to connect end plates and side plates, then welding efficiency is improved, but laser beams pass through gaps and cause battery explosions
Solution Approach 1:
A light shielding part is introduced as an intermediary component between the laser beam and the battery. This light shielding part blocks the laser beam from passing through the gap, preventing battery explosion while allowing the welding process to continue efficiently.
Solution Approach 2:
The connector is divided into multiple functional parts: a light shielding part for blocking laser radiation, and a connecting part for mechanical attachment. This segmentation allows each part to perform its specific function optimally without interfering with the other.
2Reliability
If a connector is added to improve weldability and block laser radiation, then safety performance is improved, but device complexity increases
Solution Approach 1:
The light shielding function and the connecting function are merged into a single connector component. The light shielding part and connecting part are integrated, eliminating the need for separate components and reducing overall structural complexity while maintaining safety performance.
Solution Approach 2:
The connector is designed to perform multiple functions simultaneously: it provides mechanical connection between the end plate and side plate, and it blocks laser radiation through its light shielding part. This multi-functionality reduces the number of components needed.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively improves the structural reliability and safety of battery modules by preventing battery explosions during welding, ensuring enhanced safety performance and reliable connections between the end plate and side plate.
Implementation Method 1
The connector is provided with a light shielding part, and the light shielding part is located on a side of the connector that faces the side plate, and located between the connector and the side plate
Data Source
AI summary
This application relates to an end plate of a battery module as well as a battery module. The end plate includes a body and a connector connected to the body. The body is fixedly connected to a side plate through the connector. The connector is provided with a light shielding part. The light shielding part is located on a side of the connector that faces the side plate, and located between the connector and the side plate. In the end plate as well as the battery module according to this application, the end plate includes the body and the connector, and weldability between the body and the side plate is improved by the connector. The connector includes a light shielding part that avoids the problem of battery explosion caused by a laser beam radiated to a battery inside the battery module, and improves safety performance of the battery.