Battery Box Structure Isolating Pressure Relief Emissions
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Solution Overview
Problem
Existing battery technologies face safety challenges due to the risk of thermal runaway and pressure buildup, which can lead to explosions and fires, especially when high-temperature and high-pressure emissions from a pressure relief mechanism can short-circuit other battery cells or cause damage.
Innovation Solution
A thermal management component with a weakened zone that directs emissions from a pressure relief mechanism into a collection chamber, isolating the electrical chamber and preventing damage to the bus component, while also using a recess and through holes to facilitate emission discharge and cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pressure relief mechanism is provided to release internal pressure, then safety is improved, but high-temperature and high-pressure emissions can short-circuit other battery cells or cause damage
Solution Approach 1:
A thermal management component is introduced as an intermediary between the pressure relief mechanism and the battery cells. This component includes a weakened zone that directs emissions into a collection chamber, preventing direct contact between emissions and other battery cells, thus eliminating the harmful effect while maintaining the safety function
Solution Approach 2:
The harmful emissions are extracted from the main battery system by directing them into a separate collection chamber through the weakened zone of the thermal management component. This isolates the emissions from other battery cells, preventing short circuits and damage while maintaining pressure relief functionality
2Reliability
If a thermal management component is added to direct emissions, then safety is improved, but device complexity increases
Solution Approach 1:
The thermal management component combines multiple functions into a single structure: it serves as both a thermal management device with fluid channels and a emission directing mechanism with a weakened zone. This integration reduces overall system complexity while achieving both thermal management and emission containment functions
Solution Approach 2:
The thermal management component is designed to perform multiple functions simultaneously: thermal management through fluid circulation and emission containment through the weakened zone structure. This multi-functionality eliminates the need for separate components, reducing device complexity while improving safety
3Object-affected harmful factors
If a collection chamber is provided to contain emissions, then harmful effects are reduced, but volume of the battery system increases
Solution Approach 1:
The collection chamber is nested within the existing battery pack structure, utilizing available space efficiently. The thermal management component with its fluid channels and weakened zone is integrated into the battery pack architecture, allowing the collection chamber to contain emissions without significantly increasing the overall battery system volume
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
Enhances battery safety by containing high-temperature and high-pressure emissions, reducing the risk of short circuits and explosions, and improving thermal management efficiency by directing emissions away from critical components.
Implementation Method 1
If the safety of the batteries cannot be ensured, the batteries cannot be used. Therefore, how to enhance the safety of the batteries is an urgent technical problem to be solved in the battery technology.
Implementation Method 2
the pressure relief mechanism is actuated to release the internal pressure
Implementation Method 3
A thermal management component with a weakened zone that directs emissions from a pressure relief mechanism into a collection chamber
Implementation Method 4
a cooling system for cooling battery cells which includes a plate assembly and a plurality of apertures extend through the plate assembly
Data Source
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AI summary
Embodiments of the present application provide a case of a battery, a battery, a power consumption device, and a method and device for preparing a battery. The case includes: an electrical chamber configured to accommodate a plurality of battery cells and a bus component, the bus component being configured to electrically connect the plurality of battery cells, where at least one battery cell of the plurality of battery cells includes a pressure relief mechanism, and the pressure relief mechanism is configured, when an internal pressure or temperature of the battery cell provided with the pressure relief mechanism reaches a threshold, to be actuated to release the internal pressure; a thermal management component configured to accommodate a fluid to adjust temperatures of the plurality of battery cells; and a collection chamber configured to collect, when the pressure relief mechanism is actuated, emissions from the battery cell provided with the pressure relief mechanism; where the thermal management component is configured to isolate the electrical chamber from the collection chamber. According to the technical solutions of the embodiments of the present application, the safety of the battery can be enhanced.