Pressure Control Valve Layout for Cleaner Power Storage Module Venting
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Solution Overview
Problem
In existing power storage modules, the discharge of gas from pressure control valves can lead to the scattering of electrolyte, posing a risk of short circuits and inefficiencies.
Innovation Solution
The power storage module incorporates a pressure control valve with a housing featuring a first and second hole on its outer surface, where the first hole discharges electrolyte in a controlled manner, and the second hole discharges gas, separated by a protrusion to prevent gas from blowing against the electrolyte, thereby minimizing scattering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If gas is discharged from the outlet port, then gas can escape from the housing, but electrolyte may be discharged together with gas and scattered
Solution Approach 1:
The outlet port is divided into two separate holes: a first hole for electrolyte discharge and a second hole for gas discharge. This segmentation allows each substance to be discharged through its own dedicated pathway, preventing electrolyte scattering while maintaining gas venting functionality.
Solution Approach 2:
A protrusion is introduced as an intermediary structure between the first hole and second hole. This protrusion acts as a physical barrier that blocks gas discharged from the second hole from blowing against electrolyte discharged from the first hole, thereby preventing electrolyte scattering while allowing both substances to escape.
2Device complexity
If a single outlet port is used, then the structure is simple, but gas flow path and electrolyte discharge path are mixed causing scattering
Solution Approach 1:
The single outlet port is segmented into two separate holes (first hole and second hole) with distinct functions. The first hole handles electrolyte discharge while the second hole handles gas discharge. This segmentation increases structural complexity slightly but effectively prevents electrolyte scattering by separating the discharge paths.
Solution Approach 2:
A protrusion is added as an intermediary element between the two holes. This protrusion serves as a physical separator that prevents gas from the second hole from interfering with electrolyte discharge from the first hole, thereby solving the scattering problem while maintaining relatively simple overall structure.
3Length of stationary object
If the first hole and second hole are positioned close together, then the housing wall thickness is reduced, but gas discharged from the second hole may blow against electrolyte from the first hole
Solution Approach 1:
A protrusion is positioned between the first hole and second hole to act as a protective intermediary. This protrusion extends into the housing interior and creates a physical barrier that blocks gas discharged from the second hole from blowing against electrolyte discharged from the first hole. This allows the holes to be positioned close together without causing scattering.
Solution Approach 2:
The solution moves from a two-dimensional planar arrangement of holes to a three-dimensional configuration by adding a protrusion that extends into the housing interior. This dimensional change creates a spatial barrier that prevents gas-electrolyte interaction while maintaining compact hole positioning.
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 design effectively suppresses electrolyte scattering, reducing the risk of short circuits and enhancing the module's operational efficiency by ensuring controlled discharge of gases and electrolytes.
Implementation Method 1
the electrolyte is discharged in a dripping manner from the first hole positioned vertically below
Implementation Method 2
since gas such as hydrogen gas and oxygen gas generated in the power storage module is lighter than air, the gas is discharged from the second hole positioned vertically above
Implementation Method 3
the first protrusion protrudes outward from the outer wall surface along the first direction, and extends so as to partition between the first hole and the second hole... gas discharged from the second hole is blocked by the first protrusion
Data Source
AI summary
A power storage module includes a module main body having an electrode stack in which a plurality of electrodes are stacked; and a pressure control valve attached to the module main body. The pressure control valve includes a housing having a first wall that has a communication hole, a second wall, and a first protrusion formed in the second wall, and a valve body accommodated in the housing so as to close the communication hole. The second wall has a first hole that is opened at an outer surface of the second wall, and a second hole that is opened at the outer surface, the second hole being positioned vertically above the first hole. The first protrusion protrudes outward from the outer surface along a first direction, and extends so as to partition between the first hole and the second hole, as viewed in the first direction.