Hybrid Battery Capacitor Assembly Thermal Management
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Solution Overview
Problem
Conventional hybrid vehicle battery systems face challenges in managing high current loads and extending battery life due to the need for significant capacity and discharge rates, which leads to increased size, cost, and reduced efficiency, especially when supporting key-on engine starting and hybrid drive cycles.
Innovation Solution
A battery and capacitor assembly for hybrid vehicles that includes a plurality of battery cells and capacitor cells arranged in a cell stack with integrated cooling and heating mechanisms, utilizing thermoelectric devices and heatsink plates to manage temperature independently for each type of cell, and a control module to regulate power and current supply based on temperature sensors, allowing for efficient energy distribution and reduced battery size and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If battery capacity and discharge rate are increased to meet high current loads, then power supply capability is improved, but battery size and cost increase
Solution Approach 1:
The power supply system is segmented into two distinct components: a battery for steady-state power supply and a capacitor for high-current pulse loads. This segmentation allows each component to be optimized for its specific function, enabling the battery to be smaller while still meeting overall system requirements.
Solution Approach 2:
The capacitor provides partial power supply action during high-current events, handling the excessive current demands that the battery cannot efficiently provide. This partial action by the capacitor allows the battery to operate within its optimal current range.
2Reliability
If battery capacity is increased to support key-on engine starting, then reliability is improved, but battery size and cost increase
Solution Approach 1:
The starting function is segmented from the battery's general power supply role and assigned to the capacitor. This allows the battery to be sized for steady-state operations while the capacitor handles the high-current starting pulses, improving reliability without increasing battery size.
Solution Approach 2:
The capacitor acts as an intermediary component between the battery and the high-current starting loads. It receives power from the battery and delivers it during starting events, protecting the battery from excessive current demands.
3Productivity
If independent temperature control is implemented for battery and capacitor cells, then performance optimization is improved, but device complexity increases
Solution Approach 1:
The thermal management system is segmented into separate heating and cooling mechanisms for the battery and capacitor. This allows independent temperature control optimized for each component's specific thermal requirements while maintaining manageable system complexity through modular design.
4Volume of moving object
If capacitor cells are integrated with battery cells in a common assembly, then packaging efficiency is improved, but manufacturing complexity increases
Solution Approach 1:
The battery cells and capacitor cells are merged into a single integrated assembly with shared housing, mounting structure, and thermal management components. This merging achieves packaging efficiency by utilizing space effectively while the modular cell design keeps manufacturing complexity manageable.
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 reduces battery size and cost while improving battery life by allowing the capacitor to handle high current loads and pulse-type vehicle loads, minimizing battery peak charge loads, and optimizing energy usage, leading to enhanced power management and reduced packaging costs.
Implementation Method 1
a cooling plate, a pair of end brackets, and a housing. The plurality of capacitor cells are arranged adjacent to the plurality of battery cells such that the plurality of battery cells and the plurality of capacitor cells form a cell stack
Implementation Method 2
utilizing thermoelectric devices and heatsink plates to manage temperature independently for each type of cell
Implementation Method 3
utilizing thermoelectric devices and heatsink plates to manage temperature independently for each type of cell
Data Source
AI summary
A battery and capacitor assembly for a hybrid vehicle includes a plurality of battery cells, a plurality of capacitor cells, a cooling plate, a pair of end brackets, and a housing. The plurality of capacitor cells are arranged adjacent to the plurality of battery cells such that the plurality of battery cells and the plurality of capacitor cells form a cell stack. The pair of end brackets are disposed at opposite ends of the cell stack and are attached to the cooling plate. The pair of end brackets compress the plurality of battery cells and the plurality of capacitor cells. The housing is attached to the cooling plate and encloses the cell stack and the pair of end brackets.