Battery Sampling Connector Structure to Avoid FPC Welding Heat
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Solution Overview
Problem
The existing methods for connecting a circuit board to a connecting plate in battery modules pose a risk of damaging electronic devices due to high welding temperatures, affecting measurement precision and reliability, and require high-temperature resistant insulation materials, increasing costs.
Innovation Solution
A sampling component with a connecting part that electrically and mechanically connects the circuit board to the connecting plate without direct welding, using a copper-nickel alloy and a design with bendable tips and buffer structures to reduce thermal risks and material costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the FPC is connected to the connecting plate by welding, then electrical connection is achieved, but the high welding temperature risks damaging the electronic device in the FPC, affecting measurement precision and reliability
Solution Approach 1:
The patent introduces a connecting part as an intermediary component between the FPC and the connecting plate. This connecting part includes a body portion and a connecting portion with first and second connecting sections, allowing the FPC to be connected without direct welding to the connecting plate, thereby avoiding high-temperature damage to the electronic device while maintaining reliable electrical connection.
2Measurement precision
If the FPC is connected to the connecting plate by welding, then electrical connection is achieved, but measurement precision and reliability are affected due to potential damage
Solution Approach 1:
The connecting part serves as a mediator that protects the FPC's electronic device from welding temperature. The FPC is welded to the body portion of the connecting part at a lower temperature interface, while the connecting portion extends to connect with the connecting plate, ensuring measurement precision is maintained without exposure to high welding temperatures at the critical measurement interface.
3Ease of manufacture
If high-temperature resistant insulation materials are used, then welding can be performed, but costs increase
Solution Approach 1:
The connecting part acts as an intermediary that separates the welding process from the FPC's insulation requirements. Standard insulation materials can be used on the FPC since it only needs to connect to the body portion, not directly to the connecting plate. This eliminates the need for expensive high-temperature resistant insulation materials while maintaining manufacturing capability.
Data Source
AI summary
This application relates to a sampling component, a battery module, a battery pack, and a device. The sampling component includes: a circuit board, including a signal collecting portion and an insulation film connected to the signal collecting portion; and a connecting part, including a body portion and a connecting portion, where the body portion is connected to the connecting portion, and the connecting portion is electrically connected to the signal collecting portion. In a height direction, the connecting portion includes a first connecting section and a second connecting section. The first connecting section is connected to the second connecting section. In the height direction, at least a part of the signal collecting portion is located between the first connecting section and the second connecting section.