Battery Backup Fluid Injectors for High-Density Active Cooling
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Solution Overview
Problem
Existing cooling solutions for battery backup units in data centers fail to effectively manage the high heat generated during battery charging and discharging, especially in high power-density environments, and lack a mature design for single-phase coolant applications.
Innovation Solution
An active liquid cooling system with fluid injectors that distribute cooling fluid directly to battery cells, utilizing a manifold and pump system to manage fluid circulation and provide efficient cooling, even during different operational scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If air cooling or liquid cooling is used for battery packs, then cooling capability is provided, but high power density and high packaging density cannot be achieved
Solution Approach 1:
The patent employs liquid cooling technology with cooling channels directly integrated into the battery pack structure. Coolant flows through these channels to efficiently remove heat generated during battery charging and discharging, enabling high power density applications while maintaining compact packaging.
Solution Approach 2:
The cooling system is merged with the battery pack structure itself, where cooling channels are integrated into the battery housing or support structures. This integration eliminates separate cooling components, achieves high packaging density, and maintains effective heat dissipation for high power density operations.
2Power
If batteries are charged or discharged at high rates to meet power demands, then power delivery is improved, but heat generation increases requiring more cooling
Solution Approach 1:
The cooling system operates continuously during battery charging and discharging operations. The coolant circulation maintains continuous heat removal, ensuring that thermal management keeps pace with the continuous power delivery and heat generation throughout the battery operational cycle.
Solution Approach 2:
Coolant acts as an intermediary substance that absorbs heat from the battery cells during charging and discharging. The coolant transfers thermal energy from the high-temperature battery components to the cooling system, enabling high power delivery while controlling temperature through this thermal mediation.
3Temperature
If existing cooling solutions are used, then basic cooling is provided, but thermal management effectiveness is insufficient for high power density applications
Solution Approach 1:
The cooling system implements localized cooling channels positioned strategically near high-heat-generation areas within the battery pack. This local quality approach ensures that critical regions experiencing highest temperatures during high power operations receive targeted cooling, improving overall thermal management reliability.
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 achieves effective thermal management, improves battery performance and lifetime, and allows for modular design and easy maintenance, accommodating various server and IT systems with different cooling modes and deployment scales.
Implementation Method 1
An active liquid cooling system with fluid injectors that distribute cooling fluid directly to battery cells
Implementation Method 2
utilizing a manifold and pump system to manage fluid circulation and provide efficient cooling
Data Source
AI summary
Embodiments are disclosed of a fluid injection apparatus. The fluid injection apparatus includes a supply manifold with a main inlet and a plurality of supply outlets. A manifold pump is fluidly coupled to the main inlet. One or more fluid injectors are adapted to be inserted among battery cells in a battery backup unit. Each fluid injector includes a hollow cylindrical tube having a first end, a second end, and a curved sidewall extending between the first end and the second end. The curved sidewall of each fluid injector includes a plurality of perforations, so that fluid can flow through the plurality of perforations from an interior channel of the fluid injector to an exterior of the fluid injector, and the first end of each fluid injector is fluidly coupled to a corresponding supply outlet.