Battery Cell Interconnection With Internal Temperature Control
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Solution Overview
Problem
High-energy batteries, such as those used in vehicles, face reduced lifespan due to increased temperature during charging and use, necessitating effective temperature control to maintain performance and longevity.
Innovation Solution
Incorporation of a central temperature control mechanism within battery cells, utilizing a heat transfer fluid and hollow metal plates to modulate temperature, allowing for both cooling and heating, and eliminating the need for bus bars by electrical coupling via external tabs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If temperature is increased during charging, then charging speed is improved, but battery lifespan is reduced
Solution Approach 1:
A heating element is integrated within the battery cell structure to preheat the battery before charging begins. This preliminary heating action increases the battery temperature to optimal levels for fast charging, enabling higher charging speeds without subjecting the battery to excessive temperature increases during the charging process itself, thereby preserving battery lifespan.
Solution Approach 2:
The patent employs active temperature control by adjusting the temperature of the battery before and during charging. By controlling the temperature parameter within optimal ranges, the system enables fast charging while preventing temperature-related degradation. The heating element and control system modify the temperature parameter dynamically to balance charging speed and battery longevity.
2Power
If temperature is increased during use, then operational performance is improved, but battery lifespan is reduced
Solution Approach 1:
The heating element preheats the battery to optimal operating temperature before high-power discharge begins. This preliminary action ensures the battery is at the ideal temperature for maximum power output without requiring excessive temperature increases during operation, thereby maintaining operational performance while preventing thermal degradation and extending battery lifespan.
Solution Approach 2:
The system dynamically controls the temperature parameter of the battery during operation. By maintaining the temperature within optimal ranges through active heating and cooling control, the battery can deliver maximum power performance without undergoing thermal stress that would reduce its lifespan. The temperature parameter is adjusted in real-time to balance performance and durability.
3Duration of action of stationary object
If temperature is decreased during charging, then battery lifespan is extended, but charging speed is reduced
Solution Approach 1:
The heating element raises the battery temperature to optimal levels before charging begins. This preliminary heating ensures that the battery is at the ideal temperature for fast charging, allowing high charging speeds to be achieved without requiring excessive temperature increases during charging. By preparing the battery in advance, the system extends lifespan while maintaining fast charging capability.
4Duration of action of stationary object
If temperature is decreased during use, then battery lifespan is extended, but operational performance is reduced
Solution Approach 1:
The heating element preheats the battery to optimal operating temperature before high-power discharge begins. This preliminary action ensures the battery reaches ideal temperature for maximum power output without requiring excessive temperature increases during operation. By preparing the battery in advance, the system extends lifespan while maintaining peak operational performance.
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 solution extends battery lifespan by effectively managing temperature fluctuations, improving charging efficiency and operational performance while eliminating the need for bus bars in interconnecting battery cells.
Implementation Method 1
Incorporation of a central temperature control mechanism within battery cells, utilizing a heat transfer fluid and hollow metal plates to modulate temperature
Implementation Method 2
utilizing a heat transfer fluid and hollow metal plates to modulate temperature
Data Source
AI summary
A battery interconnection system incorporating a temperature control mechanism having a first battery cell and a second battery cell is provided. The first battery cell has an electrically positive tab and an electrically negative tab. The second battery cell has an electrically positive tab and a electrically negative tab. The electrically positive tab of the first battery cell couples with the electrically positive tab of the second battery cell. Moreover, the electrically negative tab of the first battery cell couples with the electrically negative tab of the second battery cell. The first battery cell includes a cathode electrically coupled with the electrically positive tab of the first battery cell and the second battery cell includes a cathode electrically coupled with the electrically positive tab of the second battery cell. The first battery cell also has an anode electrically coupled with the a electrically negative tab of the first battery cell and the second battery cell has an anode electrically coupled with the electrically negative tab of the second battery cell.