Battery Tray Insulation Pad for Uniform Cell Temperature Control
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Solution Overview
Problem
Conventional secondary battery charging and discharging systems experience temperature deviations among battery cells due to uneven heat distribution, leading to capacity deviations and reduced selectivity in determining cell defects.
Innovation Solution
Incorporation of an insulation pad made of materials like nitrile butadiene rubber, natural rubber, or silicone rubber, which contacts one surface of the outermost battery cell, along with a cooling system that includes a blowing fan and perforated plates to manage airflow, minimizing temperature deviations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple batteries are charged/discharged simultaneously in series, then charging/discharging speed is improved, but temperature increase and insulation difficulty worsen
Solution Approach 1:
The patent divides the battery system into individually controllable units by introducing switching elements (first and second switches) for each battery. This allows selective activation of batteries based on temperature conditions, enabling parallel charging/discharging of multiple batteries when temperatures are acceptable, while isolating overheated batteries to prevent thermal runaway.
Solution Approach 2:
The patent implements dynamic control of the battery system by continuously monitoring temperature and adjusting the charging/discharging configuration in real-time. The control unit dynamically switches between series connection mode (for faster charging when temperatures are low) and isolated/parallel modes (when temperatures rise), optimizing both charging speed and thermal management throughout the process.
2Productivity
If multiple batteries are charged/discharged simultaneously in series, then charging/discharging speed is improved, but insulation control difficulty worsens
Solution Approach 1:
The patent segments the battery system into independently controllable modules with individual switching elements. This modular approach simplifies insulation control by allowing the system to treat each battery as a separate unit that can be independently activated or isolated, reducing the complexity of managing insulation across the entire system compared to treating all batteries as a single unit.
Solution Approach 2:
The patent introduces switching elements (first and second switches) as intermediary components between the batteries and the charging/discharging system. These switches act as mediators that simplify insulation control by providing clear on/off states for each battery, making it easier to manage electrical isolation and prevent current leakage compared to complex multi-battery series connections without individual control.
3Reliability
If insulation is not properly controlled, then battery life is reduced due to overheating, but adding insulation control mechanisms increases device complexity
Solution Approach 1:
The patent implements a self-service temperature monitoring and control system where each battery's temperature is independently monitored and the system automatically adjusts the charging/discharging configuration based on detected temperature conditions. This self-regulating mechanism extends battery life by preventing overheating without requiring complex external control systems, as the batteries essentially monitor and protect themselves through the integrated temperature sensing and switching control.
Solution Approach 2:
The patent incorporates temperature feedback control by continuously monitoring battery temperature and using this information to dynamically adjust the charging/discharging operation. The control unit receives temperature feedback from each battery and automatically modifies the system configuration (activating or isolating specific batteries) to maintain safe operating temperatures, thereby extending battery life through simple feedback-based control rather than complex predictive algorithms.
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
The system effectively maintains uniform temperatures among battery cells, reducing the risk of defective cell determination by enhancing temperature consistency and stability.
Implementation Method 1
a lower temperature increase is achieved in the secondary battery according to one embodiment of the present invention. That is, it has been found that a temperature increase of the secondary battery can be reduced by disposing of a heat-insulating member (insulation pad) between the case and the secondary battery
Implementation Method 2
discharge the heating element and the insulation pad between the case and the secondary battery
Data Source
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AI summary
A secondary battery charging and discharging system includes a tray configured to accommodate a plurality of battery cells, an insulation pad disposed in the tray, the insulation pad being disposable between the tray and an outermost battery cell among the plurality of battery cells so as to be contactable with one surface of the outermost battery cell, a charging and discharging part configured to be electrically connected to first and second electrode leads of the plurality of battery cells accommodated in the tray, and a cooler configured to cool the plurality of battery cells accommodated in the tray. A method of controlling an inner temperatures of a secondary battery charging and discharging system is also provided.