Battery Tray Venting Structure for Rapid Gas Discharge
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Solution Overview
Problem
In existing battery packs, discharged flame, smoke, or gas from anti-explosion valves accumulate and can cause secondary damage or affect other batteries if not promptly discharged.
Innovation Solution
A battery tray with a tray body featuring air passages, inlet vents, and exhaust vents that direct discharged gases outside the battery pack, combined with a battery-pack anti-explosion valve to manage pressure and prevent accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the battery pack uses a sealed enclosure to protect battery cells, then protection against external factors is improved, but discharged gases accumulate inside causing secondary damage
Solution Approach 1:
The patent extracts the harmful discharged gases from the sealed enclosure by providing dedicated exhaust vents that channel these gases outward. The exhaust vents are positioned to receive discharged gases from battery cell anti-explosion valves and conduct them outside the battery pack enclosure, thereby removing the harmful accumulation problem while maintaining the protective sealed structure.
Solution Approach 2:
The patent introduces exhaust vents as intermediary structures that mediate between the sealed enclosure and the external environment. These vents serve as controlled pathways that allow discharged gases to pass through the enclosure boundary without compromising the overall sealed protection, thus resolving the contradiction between sealing and gas discharge.
2Device complexity
If the battery pack maintains a simple sealed structure, then manufacturing complexity is reduced, but the ability to discharge gases quickly is compromised
Solution Approach 1:
The patent segments the battery pack enclosure into multiple functional zones by providing several exhaust vents at different locations. Each exhaust vent is positioned to serve specific battery cells or regions, allowing discharged gases to be rapidly channeled outward from multiple points simultaneously, thus enhancing discharge speed without significantly increasing overall structural complexity.
Solution Approach 2:
The exhaust vents are pre-configured in the enclosure structure at optimal positions to receive discharged gases directly from battery cell anti-explosion valves. This preliminary arrangement ensures that when gas discharge is needed, the pathways are already in place and properly positioned, enabling immediate and rapid gas ejection without requiring complex active control mechanisms.
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
Prevents secondary damage by directly channeling discharged gases outside the battery pack, enhancing safety by ensuring rapid discharge and preventing accumulation.
Implementation Method 1
the partition plates and the side beam are each formed therein with an air passage and are in communication with each other
Implementation Method 2
the inlet vent is configured to introduce a flame, smoke or gas discharged from the battery cell into the air passage
Implementation Method 3
the exhaust vent is configured to discharge the flame, smoke or gas inside the air passage
Data Source
AI summary
Provided are a battery tray and a power battery pack. The battery tray includes a tray body. The tray body includes a base plate, a side beam, and several partition plates, the side beam is disposed around the base plate and defines, together with the base plate, an accommodating space for battery cells. The partition plates are disposed on the base plate and divide the base plate into several regions for placing the battery cells. The partition plates and the side beam are each formed therein with an air passage and are in communication with each other. The partition plates are provided with several inlet vents, and the side beam is provided with at least one exhaust vent. The inlet vent is configured to introduce a flame, smoke or gas discharged from the battery cell into the air passage.