Bipolar Power Storage Module Voltage Detection With Short-Circuit Members
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing power storage modules experience a decrease in voltage measurement accuracy due to voltage drops between the conductive plates and the power storage modules, affecting detection accuracy.
Innovation Solution
A power storage module design featuring bipolar electrodes with positive and negative terminal electrodes, current collector plates, and short circuit members that connect the terminal electrodes to the current collector plates via conductive adhesive materials or direct contact, allowing for voltage detection without overlapping the terminal electrodes, thus minimizing voltage drop and enhancing measurement accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If voltage detection terminal is connected to conductive plate connected to outermost layer of power storage module, then voltage of each power storage module can be detected, but measurement accuracy of voltage decreases due to voltage drop between power storage module and conductive plate
Solution Approach 1:
The patent introduces a short circuit member as an intermediary component that creates a dedicated low-resistance electrical connection between the conductive plate and the voltage detection terminal. This intermediary pathway bypasses the high-resistance connection through the power storage module, allowing accurate voltage detection without significant voltage drop. The short circuit member effectively mediates between the detection need and the module's current path, resolving the contradiction between measurement accuracy and energy loss.
2Reliability
If conductive plate is used as current path of power storage module, then electrical connection is established, but voltage measurement accuracy decreases due to influence of voltage drop
Solution Approach 1:
The patent segments the electrical connection path into two distinct functions: the conductive plate maintains its role as the current path for power transmission, while a separate short circuit member creates a dedicated detection path for voltage measurement. This segmentation allows the current path to maintain its reliability for power transmission while the detection path provides accurate voltage measurement, eliminating the interference between these two functions.
3Ease of operation
If voltage detection terminal is connected through existing conductive structure, then detection is simplified, but measurement accuracy decreases due to voltage drop influence
Solution Approach 1:
The patent merges the voltage detection function with the existing conductive plate structure by providing a detection terminal that directly contacts the conductive plate. This merging maintains the simplicity of the detection system while the additional short circuit member ensures accurate voltage measurement by creating a low-resistance connection that eliminates voltage drop interference, thus combining structural simplicity with measurement accuracy.
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 suppresses the decrease in voltage measurement accuracy by ensuring the voltage detection portions are at non-overlapping positions, allowing for precise voltage measurement and detecting abnormalities in the connection state, such as peeling of conductive adhesive materials, by maintaining lower electrical resistance.
Implementation Method 1
a positive electrode current collector plate disposed to be stacked on the positive terminal electrode so as to make contact via a positive electrode side conductive adhesive material or directly with a surface of the positive terminal electrode
Data Source
AI summary
A power storage module includes a plurality of bipolar electrodes, a positive terminal electrode, a negative terminal electrode, a positive electrode current collector plate, a negative electrode current collector plate, a positive electrode side short circuit member electrically connecting the positive terminal electrode and the positive electrode current collector plate, and a negative electrode side short circuit member electrically connecting the negative terminal electrode and the negative electrode current collector plate. Positive electrode current collector plate has a positive electrode side voltage detection portion, and positive electrode side short circuit member electrically connects positive terminal electrode and positive electrode side voltage detection portion. Negative electrode current collector plate has a negative electrode side voltage detection portion, and negative electrode side short circuit member electrically connects negative terminal electrode and negative electrode side voltage detection portion.