Battery Module Circuit Board Layout for Hot and Cold Spot Sensing
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Solution Overview
Problem
Existing battery modules lack effective temperature sensing capabilities, which can lead to variations in charge amount and output due to temperature fluctuations in operating environments.
Innovation Solution
A battery module design that includes a battery cell stack with first and second bus bar frames, a first circuit board with a first temperature sensor, and optionally a second circuit board with a second temperature sensor, allowing for the sensing of both cold and hot spots within the battery cell stack.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If temperature sensing components are added to the battery module, then temperature measurement capability is improved, but device complexity increases
Solution Approach 1:
The temperature sensor is integrated with the circuit board that is already present in the battery module for electrical connections. The circuit board serves dual purposes: electrical connectivity and temperature sensing support, eliminating the need for a separate sensing structure and reducing overall device complexity.
Solution Approach 2:
The circuit board performs multiple functions simultaneously: it provides electrical connections between battery cells and serves as a mounting platform for the temperature sensor. This multi-functionality approach allows temperature sensing capability to be added without proportionally increasing device complexity.
2Measurement precision
If multiple temperature sensors are deployed to detect hot and cold spots, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The battery module is divided into distinct thermal zones (hot spots and cold spots), and temperature sensors are strategically placed in each zone. This segmentation approach allows comprehensive temperature monitoring while minimizing the total number of sensors needed by focusing measurements on critical thermal regions.
Solution Approach 2:
Different sensing capabilities are applied to different locations within the battery module based on their specific thermal characteristics. Temperature sensors are positioned at specific locations (top and bottom surfaces) where thermal variations are most significant, providing locally optimized measurement quality without uniformly instrumenting the entire module.
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 precise temperature sensing of the battery cell stack, allowing for effective control and stabilization of the battery module's performance across varying temperature conditions.
Implementation Method 1
at least one first temperature sensor disposed on the first circuit board
Data Source
AI summary
The present invention relates to a battery module and a device including the same. The battery module according to an embodiment of the present invention includes: a battery cell stack in which a plurality of battery cells are stacked in a first direction; a first bus bar frame and a second bus bar frame, which face each other in a second direction different from the first direction with the battery cell stack therebetween; a first circuit board disposed to face at least a portion of the outermost battery cell disposed at the outermost side among the plurality of battery cells in the first direction; and at least one first temperature sensor disposed on the first circuit board.