Battery Module Temperature Sensor Integration on Circuit Board
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Solution Overview
Problem
The high manufacturing costs of battery modules for electronic equipment, such as electric vehicles, due to the need for separate structures and adhesives for temperature sensor installation and additional connections to a protective circuit module, hinder efficient temperature measurement and control.
Innovation Solution
A battery module design incorporating a circuit board with a first temperature sensor adjacent to bus bars and a second temperature sensor spaced from them, both connected to a controller that calculates an estimated temperature of each battery cell by accounting for temperature differences using a correction coefficient stored in a lookup table, reducing the need for separate structures and adhesives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If temperature sensors are directly installed on battery cells with separate structures and adhesives, then temperature measurement accuracy is improved, but manufacturing cost increases excessively
Solution Approach 1:
The patent merges the temperature sensor mounting function with the existing circuit board structure. The circuit board serves dual purposes: electrical connection and temperature sensing platform. This eliminates the need for separate sensor mounting structures and adhesives, reducing manufacturing cost while maintaining measurement capability through strategic sensor placement on the circuit board near the battery cells.
2Measurement precision
If multiple temperature sensors are installed on battery cells, then temperature measurement coverage is improved, but device complexity increases
Solution Approach 1:
The circuit board is designed to serve multiple functions: electrical connection for battery cells and temperature sensing platform. By placing multiple temperature sensors on the circuit board at different locations, the system achieves comprehensive temperature monitoring coverage without requiring separate sensor mounting structures for each sensor, thereby reducing overall structural 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 temperature measurement accuracy and reduces manufacturing costs by integrating temperature sensors and controllers on the circuit board, allowing for precise temperature estimation of battery cells while minimizing thermal influences from the circuit board.
Implementation Method 1
a first temperature sensor on the circuit board to measure a first temperature of the battery cells
Implementation Method 2
a second temperature sensor on the circuit board and spaced from the first temperature sensor, the second temperature sensor to measure a second temperature from the circuit board
Implementation Method 3
a controller on the circuit board to receive information indicative of the first temperature and the second temperature and to calculate an estimated temperature of each of the battery cells
Data Source
AI summary
An apparatus includes: a first temperature sensor; a second temperature sensor; a circuit board adjacent to one or more battery cells; and a controller to calculate a temperature of the one or more battery cells based on signals output from the first and second temperature sensors. The first temperature sensor may be closer to the one or more battery cells than the second temperature sensor, and the second temperature sensor may be closer to at least one circuit of the circuit board than the first temperature sensor.