Hybrid Battery Pack Thermal Management via Solid-State Surround
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Solution Overview
Problem
Combining batteries with different properties, such as lithium ion and electrolytic solution-based batteries, complicates temperature management, leading to increased system size and reduced energy density and durability.
Innovation Solution
Incorporating a solid-state battery module with a broad temperature range to surround an electrolytic solution-based battery module, creating a simplified temperature adjustment system, improved thermal insulation, and enhanced durability by separating battery types and using vacuum environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If an electrolytic solution-based battery and other batteries are combined, then the power source system can achieve higher performance, but the temperature adjustment system becomes complicated and increases in size
Solution Approach 1:
The battery pack is divided into separate battery modules (electrolytic solution-based battery module and solid-state battery module), each with its own characteristics. The temperature adjustment system is also segmented to manage only the electrolytic solution-based battery module, simplifying the overall system while maintaining high performance through modular design.
2Power
If an electrolytic solution-based battery and other batteries are combined, then the power source system can achieve higher performance, but the energy density is reduced
Solution Approach 1:
The patent combines electrolytic solution-based batteries (high power) and solid-state batteries (high energy density) into a single battery pack. By merging these two types with complementary characteristics, the system achieves both high performance and high energy density, as the solid-state batteries occupy the space that would otherwise be wasted with empty modules.
3Power
If an electrolytic solution-based battery and other batteries are combined, then the power source system can achieve higher performance, but the durability is reduced
Solution Approach 1:
The patent applies different quality characteristics to different parts of the system: electrolytic solution-based batteries provide high power output capability, while solid-state batteries provide high durability and broad temperature range. By assigning specific functions to specific battery types in different locations, the system achieves both high performance and high durability.
4Temperature
If solid-state battery module is arranged under vacuum environment, then the thermal insulation performance is improved, but the manufacturing complexity increases
Solution Approach 1:
The solid-state battery module is arranged in a vacuum environment (inert atmosphere) within the battery pack. This vacuum layer provides excellent thermal insulation, protecting the solid-state batteries from external temperature effects and improving overall system thermal management without requiring active heating or cooling systems.
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 configuration simplifies the temperature adjustment system, improves energy density and durability, reduces heat generation, and enhances safety by preventing electrolyte leakage and heat transfer, while maintaining performance across varying temperatures.
Implementation Method 1
the solid-state battery module is arranged under vacuum environment
Implementation Method 2
the thermal insulation performance of the solid-state battery module is improved
Data Source
AI summary
Provided is a battery pack having excellent energy density and durability.A battery pack 100 includes solid-state battery modules 102 each configured such that a plurality of solid-state battery cells containing a solid electrolyte is stacked and electrolytic solution-based battery modules 32 each configured such that a plurality of electrolytic solution-based battery cells containing an electrolytic solution is stacked, the solid-state battery modules 102 and the electrolytic solution-based battery modules 32 being combined and housed in the pack. The solid-state battery modules 102 are arranged to surround the electrolytic solution-based battery modules 32.