Pressure Adjustment Valve for Power Storage Module
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Solution Overview
Problem
The existing power storage modules face challenges in easily examining the pressure adjustment valve before assembly, improving liquid injection operability, stabilizing internal pressure, suitably adjusting pressure in multiple internal spaces with a common valve, and adjusting the valve opening pressure to a desired value.
Innovation Solution
The power storage module design includes a laminated body with bipolar electrodes, a frame body with multiple openings for pressure adjustment valves, and a pressure adjustment valve configuration featuring a base member with communication holes, an elastic member, and a pressing member, allowing for pre-assembly examination, improved liquid injection, and precise pressure control through strategically arranged communication holes and groove portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pressure adjustment valve is assembled to the bipolar battery before examination, then the valve can function normally, but it becomes difficult to examine the valve opening pressure in advance
Solution Approach 1:
The patent applies preliminary action by enabling examination of the pressure adjustment valve before final assembly. The communication holes in the base member allow air to be sent into the valve mechanism to confirm proper operation and measure valve opening pressure independently, before the valve is permanently installed in the bipolar battery assembly.
2Device complexity
If one common pressure adjustment valve is provided for multiple internal spaces, then the device complexity is reduced, but the seal pressure varies due to position differences
Solution Approach 1:
The patent applies local quality by providing multiple communication holes in the base member, each positioned to communicate with different internal spaces. This allows a single pressure adjustment valve to serve multiple functions with locally optimized communication paths, maintaining uniform seal pressure across different positions while using one valve.
3Stability of the object's composition
If the pressure adjustment valve is assembled after battery assembly, then the internal space is sealed, but it is difficult to examine the valve before assembly
Solution Approach 1:
The patent enables preliminary examination of the pressure adjustment valve by incorporating communication holes in the base member that allow air to be introduced into the valve mechanism before final assembly. This preliminary action confirms proper valve operation and measures opening pressure independently, while the valve still performs its sealing function when assembled.
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 configuration enables easy examination and assembly of pressure adjustment valves, enhances liquid injection operability, stabilizes internal pressure, allows for effective pressure adjustment across multiple internal spaces, and adjusts the valve opening pressure to a desired value, improving the overall functionality of the power storage module.
Implementation Method 1
an elastic member arranged to block second opening ends of the plurality of communication holes
Implementation Method 2
a pressing member pressing the elastic member against the base member
Implementation Method 3
a method for manufacturing a power storage module, in which the examination of the pressure adjustment valve is facilitated, includes: a step of sending air into each of the communication holes
Data Source
AI summary
A power storage module 12 according to a first aspect includes: a laminated body 30 in which bipolar electrodes 32 including an electrode plate 34, a positive electrode 36, and a negative electrode 38, are laminated; a frame body 50 provided with an opening 50a communicated with a plurality of internal spaces V; and a pressure adjustment valve 60 connected to the opening 50a. The pressure adjustment valve 60 includes a base member 70 connected to the opening 50a and provided with a plurality of communication holes 74 respectively communicated with the plurality of internal spaces V, a valve body 80 arranged to shut opening ends 76a of the plurality of communication holes 74, and a cover member 90 pressing the valve body 80 against the base member 70.