Battery Pack Cooling Assembly for Shared Cell and BDU Heat Control
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Solution Overview
Problem
The use of separate temperature control systems for Battery Disconnect Units (BDUs) and batteries in battery packs leads to wasted energy, increased costs, and suboptimal space utilization due to the separate systems occupying a larger space.
Innovation Solution
A unified cooling assembly is integrated with the battery pack to dissipate heat for both cells and BDUs, controlled by a single control system based on cell temperature, eliminating the need for separate cooling strategies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two separate temperature control systems are used for BDU and battery, then temperature control reliability is improved, but device complexity and space occupation increase
Solution Approach 1:
The patent merges the BDU cooling system and battery cooling system into a single integrated temperature control system. The cooling assembly includes a cooling medium circulation system that can simultaneously cool both the BDU and battery cells through shared cooling channels and fluid circulation paths, reducing system complexity while maintaining temperature control reliability
Solution Approach 2:
The cooling assembly is designed with multi-functionality to serve both BDU and battery cooling needs. The circulation system can dynamically allocate cooling capacity to different components based on real-time temperature requirements, allowing a single system to perform multiple temperature control functions
2Measurement precision
If two separate temperature control systems are used for BDU and battery, then temperature control precision is improved, but space utilization rate deteriorates
Solution Approach 1:
The cooling assembly employs a nested structure where cooling channels for the BDU and battery are integrated within a shared housing. The circulation system components (pump, reservoir, controllers) are consolidated into a single integrated unit that occupies less space than two separate systems would require
Solution Approach 2:
The patent combines the cooling medium circulation paths for BDU and battery into a shared system with common pumps, reservoirs, and control units. This merging reduces the total space required for temperature control components while maintaining the ability to independently regulate temperatures of both components
3Reliability
If two separate temperature control systems are used for BDU and battery, then temperature control effectiveness is improved, but energy consumption increases
Solution Approach 1:
The integrated cooling assembly uses a single circulation system that can dynamically allocate cooling capacity to BDU or battery based on real-time thermal demands. The shared pump and cooling medium system reduce redundant energy consumption compared to two independent systems operating simultaneously
Solution Approach 2:
The temperature control system employs dynamic control strategies where the circulation flow rates and cooling activation are adjusted in real-time based on the actual thermal conditions of BDU and battery. This dynamic allocation optimizes energy consumption by activating cooling only when and where needed
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 integration reduces energy waste, lowers temperature control costs, and improves space utilization by using a single cooling strategy for both cells and BDUs.
Implementation Method 1
a cooling assembly provided at a side portion of the cell and a side portion of the battery disconnect unit and configured for dissipating heat for the cell and the battery disconnect unit
Data Source
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AI summary
The present application discloses a battery pack, a temperature control method, a battery management system, and a computer readable medium. The battery pack includes: at least one cell; a battery disconnect unit configured for controlling discharging of the cell and charging of the cell in a fast charging mode; a cooling assembly provided at a side portion of the cell and a side portion of the battery disconnect unit and configured for dissipating heat for the cell and the battery disconnect unit; and a control system electrically connected to the cooling assembly and the cell and configured for turning on the cooling assembly according to a temperature of the cell.