Battery Pack Detector Insulation for Cell Monitoring
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Solution Overview
Problem
Existing battery packs for devices like electric vehicles and hybrid vehicles face challenges in efficiently monitoring and managing the voltage and temperature of multiple battery cells, particularly in densely packed configurations, which can lead to issues such as overheating and malfunctions.
Innovation Solution
A battery pack design featuring a cell block with a detector module that includes an insulative body, voltage detection leads, and temperature detection leads, which are securely fixed and positioned to monitor the state information of three adjacent battery cells, allowing for efficient detection of voltage and temperature data while minimizing physical and electrical interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If battery cells are densely packed to increase capacity, then the quantity of battery cells increases, but the ability to monitor voltage and temperature accurately deteriorates
Solution Approach 1:
The battery pack is divided into multiple cell blocks, with each cell block containing a specific number of battery cells (e.g., 3 cells). Each cell block has its own detector that monitors voltage and temperature for the cells within that block. This segmentation allows accurate monitoring of individual cells while maintaining high overall battery capacity through the modular structure.
2Measurement precision
If detectors are placed close to battery cells to improve monitoring, then measurement precision improves, but electrical interference between leads increases
Solution Approach 1:
An insulative body is introduced as an intermediary component between the detector leads and the battery cells. This insulative body physically supports the voltage detection lead and temperature detection lead, positioning them close to the battery cell for accurate monitoring while simultaneously providing electrical insulation to prevent interference with adjacent cells. The insulative body may include features such as through-holes for lead passage and pressing portions to secure leads in position.
3Measurement precision
If multiple detectors are installed to monitor all battery cells, then measurement precision improves, but device complexity increases
Solution Approach 1:
The detector design is made universal and multi-functional. Each detector is capable of monitoring both voltage and temperature for multiple battery cells within its cell block. The detector structure, including the insulative body with standardized lead routing and cell interface features, can be replicated across different cell blocks, simplifying installation and maintenance while providing comprehensive monitoring coverage throughout the battery pack.
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 monitoring and management of battery cell states, preventing malfunctions like overheating and improving the overall reliability and safety of the battery pack by providing accurate and reliable voltage and temperature data.
Implementation Method 1
an insulative body, a voltage detection lead, and a temperature detection lead, wherein the insulative body faces an outer peripheral surface of a first battery cell... and the voltage detection lead and the temperature detection lead are at least partially surrounded and fixed by the insulative body
Data Source
AI summary
A battery pack including a cell block including a group of battery cells electrically connected to each other; and a detector on a lateral surface of the cell block, the detector including an insulative body, a voltage detection lead, and a temperature detection lead, wherein the insulative body faces an outer peripheral surface of a first battery cell, the outer peripheral surface being exposed at the lateral surface of the cell block, and the voltage detection lead and the temperature detection lead are at least partially surrounded and fixed by the insulative body.