Battery Pack Sensing Terminal Integration
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Solution Overview
Problem
Existing battery pack designs face challenges in optimizing terminal structures for measuring state variables like temperature and voltage efficiently, which affects the detection of abnormal operations and control of charging and discharging processes, and complicates the manufacturing process.
Innovation Solution
The battery pack incorporates first and second sensing terminals connected to bus bars via connectors that form a plate-shaped structure, allowing for easy insertion and stable coupling, enabling precise measurement of temperatures and voltages, and transmitting these signals to a battery management system for monitoring and control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional terminal structures are used for measuring state variables, then the detection of abnormal operations can be achieved, but the manufacturing process becomes complicated and the structure is not optimized
Solution Approach 1:
The patent combines the temperature sensing terminal and voltage sensing terminal into a single integrated terminal structure mounted on the bus bar. This merging simplifies the manufacturing process by reducing the number of separate components and assembly steps, while maintaining the ability to detect both temperature and voltage for comprehensive abnormal operation detection.
Solution Approach 2:
The terminal structure is designed to serve multiple functions simultaneously: it acts as both a temperature sensing point and a voltage sensing point, and also serves as an electrical connection element. This multi-functionality reduces the overall component count and simplifies the manufacturing process while ensuring reliable detection of abnormal operations through multiple parameters.
2Device complexity
If separate terminals are used for temperature and voltage measurement, then precise measurement can be achieved, but the device complexity increases
Solution Approach 1:
While the terminal is integrated, it contains distinct sensing regions: a first sensing terminal portion for temperature measurement and a second sensing terminal portion for voltage measurement. This segmentation within the integrated structure allows precise measurement of different state variables while presenting a unified, simpler external structure that reduces overall device complexity.
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
This design enhances the efficiency of detecting abnormal operations and controlling battery states, while simplifying the manufacturing process by providing a robust and efficient connection method for sensing terminals, thereby improving the overall performance and reliability of the battery pack.
Implementation Method 1
a first sensing terminal (80) connected to the connectors (130) and configured to measure temperatures of the battery cells (10)
Implementation Method 2
a second sensing terminal (90) connected to the connectors (130) and configured to measure voltages of the battery cells (10)
Data Source
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AI summary
A battery pack includes at least one battery cell, a connector on the at least one battery cell, the connector including first and second connection parts integral with each other, and first and second sensing terminals insertable into the first and second connection parts, respectively, the first and second sensing terminals being configured to measure a temperature and a voltage of the battery cell, respectively.