Battery Temperature Diode Matrix for Dense Sensing With Less Wiring
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Solution Overview
Problem
Conventional temperature measurement in battery systems using negative temperature coefficient (NTC) sensors is limited by high wiring effort and costs due to the need for multiple sensing lines, restricting the number of temperature sensors and complicating the construction and integration of the battery system.
Innovation Solution
A temperature measurement arrangement utilizing a matrix-topology of first temperature sensing diodes arranged in a grid, connected via a current supply portion, voltage measurement portion, and control portion, allowing concurrent measurement of multiple diodes with reduced wiring complexity and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional NTC sensors with multiple sensing lines are used for temperature measurement, then temperature monitoring capability is achieved, but wiring complexity and system cost increase significantly
Solution Approach 1:
The patent combines multiple temperature sensing diodes into a matrix topology where multiple sensing elements share common current supply lines and voltage measurement lines. This merging approach allows multiple temperature measurement points to be achieved with fewer physical wiring connections compared to conventional individual sensor implementations.
Solution Approach 2:
The current supply lines and voltage measurement lines serve multiple functions and multiple sensing diodes simultaneously. Each line in the matrix is shared by multiple diodes, creating a multi-functional wiring system that reduces overall wiring complexity while maintaining comprehensive temperature monitoring capability across the battery system.
2Measurement precision
If multiple individual temperature sensors are deployed throughout the battery system, then spatial temperature resolution is improved, but system cost and installation complexity increase
Solution Approach 1:
The patent transitions from conventional linear or point-based sensor arrangements to a two-dimensional matrix topology. This dimensional change allows temperature sensing points to be distributed across the battery system in a grid pattern, providing superior spatial resolution while the shared wiring structure maintains manufacturing simplicity.
Solution Approach 2:
The battery system is divided into multiple temperature monitoring zones defined by the matrix grid, with each intersection representing a specific measurement point. This segmentation allows focused temperature monitoring of different battery regions while using a standardized matrix structure that simplifies overall system integration.
3Reliability
If a full matrix of temperature sensing diodes is implemented with dedicated wiring for each diode, then complete temperature coverage is achieved, but wiring effort and cost become prohibitive
Solution Approach 1:
The patent merges the wiring requirements of multiple temperature sensing diodes by implementing shared current supply lines and shared voltage measurement lines in a matrix configuration. This combining approach ensures complete temperature coverage across all diode locations while dramatically reducing the total quantity of wiring required compared to dedicated individual connections.
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
Enables efficient and spatially resolved temperature measurement with improved safety and thermal event detection, simplifying the construction and integration of the temperature measurement system in battery systems.
Implementation Method 1
a plurality of first temperature sensing diodes arranged in a grid and configured to be thermally connectable to battery cells of the battery system
Data Source
AI summary
A temperature measurement arrangement for a battery system includes: temperature sensing diodes in a grid and thermally connectable to battery cells of the battery system, a current supply portion, a voltage measurement portion, and a control portion. The grid has first lines and second lines electrically interconnected with the temperature sensing diodes. A forward direction of each temperature sensing diode pointing from the corresponding first line to the corresponding second line. The current supply portion including current supply connections that are, independently of each other, suppliable with electric current. The first lines are connected between the voltage measurement portion and the current supply portion, and the second lines are connected to the control portion. The control portion connects a selected second line to ground, and the temperature measurement arrangement determines a temperature of the corresponding first temperature sensing diodes by measuring voltages via the voltage measurement portion.