Segmented Battery Cooling Device for Uniform Temperature Control
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Solution Overview
Problem
Existing temperature control devices for electric vehicle battery modules are inefficient in maintaining uniform temperature and often result in reduced battery lifetime due to excessive heating during high-speed charging processes, requiring improved cooling systems to manage temperature effectively.
Innovation Solution
A temperature control device with a design that includes multiple temperature control cells connected directly to separate collectors, allowing for shorter coolant paths and increased cooling efficiency, with a heat exchanger surface made of thermally conductive materials, and a configuration that doubles the number of cooling cells while maintaining a compact size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If traditional temperature control devices with long coolant paths are used, then the device can cover a larger area, but the cooling efficiency is reduced and battery lifetime is shortened due to excessive heating
Solution Approach 1:
The temperature control device is divided into multiple temperature control cells, each with its own coolant channel connected directly to collectors. This segmentation allows each cell to independently cool battery modules efficiently without long coolant paths, resolving the contradiction between cooling efficiency and battery lifetime protection.
2Area of stationary object
If the number of temperature control cells is increased to improve cooling coverage, then more battery modules can be cooled, but the device complexity and space requirements increase
Solution Approach 1:
The device is segmented into multiple independent temperature control cells, each with simple direct connections to collectors. This allows increased cooling coverage through modular addition of cells without proportionally increasing overall device complexity, as each cell follows the same simple structural pattern.
Solution Approach 2:
Multiple temperature control cells are merged into a single integrated device with shared collectors. This combining approach allows the device to cover larger areas while maintaining relatively simple overall structure through the reuse of common components (collectors) across multiple cells.
3Productivity
If traditional coolant channel configurations are used, then the device structure is simpler, but the coolant volume required increases and cooling efficiency decreases
Solution Approach 1:
The coolant distribution system is segmented into multiple direct connections from collectors to individual temperature control cells. This eliminates long common coolant paths and reduces the total coolant volume required while improving cooling efficiency through shorter, more direct coolant flow paths in each segmented cell.
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 cooling efficiency, maintains uniform battery module temperatures, and extends battery lifetime by reducing the required cooling power and coolant volume, while allowing for a more compact and efficient battery housing.
Implementation Method 1
each temperature control cell having a heat exchanger surface for transferring heat from a battery module, the temperature of which is to be controlled, to the temperature control device or vice versa
Implementation Method 2
at least one temperature control agent channel spaced a distance away from the heat exchanger surface, which is fluidically connected on the inlet or outlet sides to a first temperature control agent collector and at least one second temperature control agent collector
Data Source
AI summary
A temperature control device for a battery housing of a vehicle driven by electric motor. The temperature control device is divided into a plurality of temperature control cells. Each cell has a heat exchanger surface for transmitting heat from a battery module to the temperature control device or vice versa, and at least one temperature control agent channel, which is fluidically connected on an inlet or outlet side to a first temperature control agent collector and on its other side to a second temperature control agent collector. The temperature control device has at least one first temperature control agent collector and at least one second temperature control agent collector, wherein each temperature control cell is connected to a first temperature control agent collector and a second temperature control agent collectors by its at least one temperature control agent channel, without connecting to the at least one temperature control agent channel of another temperature control cell.