Battery Overcharge Protection Triggering Unit
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Solution Overview
Problem
Existing battery systems lack effective mechanisms for rapid overcharge and deep discharge protection, which can lead to damage and unsafe conditions, particularly in lithium-ion batteries where chemical reactions can occur.
Innovation Solution
A battery system incorporating a triggering unit with an electrically conductive mechanical component that initiates a rapid discharge unit, utilizing a bimetallic strip or conductive contact to create an irreversible electrical connection between poles, ensuring safe disconnection of the energy storage device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a current interruption device is used to protect the battery, then overcharge and deep discharge protection is achieved, but the discharge process is slow and does not enable rapid transition to safe state
Solution Approach 1:
The protection system is segmented into two distinct functional units: a current interruption device for normal protection operations and a rapid discharge unit for emergency situations. This segmentation allows each unit to be optimized for its specific function, enabling both reliable protection and rapid discharge capability.
Solution Approach 2:
The rapid discharge unit is prepared in advance with pre-positioned conductive elements and bonding agents. When triggered by the triggering unit, it can immediately create a low-resistance discharge path without requiring complex real-time control, enabling rapid transition to safe state.
2Speed
If additional electrical and electronic components are added to achieve rapid discharge, then discharge speed is improved, but device complexity increases
Solution Approach 1:
The triggering unit utilizes the battery's own internal resources - the conductive housing and existing electrical connections - to create the rapid discharge path. The bonding agent automatically activates upon triggering, eliminating the need for external actuators, motors, or complex control electronics.
Solution Approach 2:
A bonding agent serves as an intermediary substance that creates the electrical connection between conductive elements. This simple chemical mediator replaces complex mechanical or electronic switching mechanisms, achieving rapid discharge with minimal components.
3Adaptability or versatility
If a mechanical component is used to trigger the rapid discharge unit, then the system can be activated by physical parameters like pressure, but the triggering mechanism adds device complexity
Solution Approach 1:
The conductive housing serves multiple functions: it provides structural containment, acts as an electrical connection path, and serves as one of the conductive elements in the rapid discharge unit. This multi-functionality reduces the need for separate components and simplifies the overall device structure.
Solution Approach 2:
The triggering unit is merged with the rapid discharge unit by using the same conductive elements and bonding agent for both the discharge path and the triggering mechanism. This integration eliminates separate triggering components and simplifies the device structure.
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
Enables quick and safe discharge of the battery, preventing further operation in abnormal states and adhering to safety standards with minimal additional components and complexity.
Implementation Method 1
The material of the contact, the bimetallic strip and/or a coating of the bimetallic strip is selected in such a way that a current flow via an electrically conductive connection between the conductor and the contact between the first pole and the second pole creates an irreversible electrical connection
Implementation Method 2
the conductor has at least one heating resistor arranged on the insulation layer and having a first and a second contact, it being possible to conduct an electric current through the heating resistor via the contacts
Data Source
AI summary
Battery system with overcharge and/or deep discharge protection, comprising at least one electrical energy storage device with a first pole electrically connected to a first electrode of the electrical energy storage device, with a second pole electrically connected to a second electrode of the electrical energy storage device, with a fast discharge unit for electrically discharging the electrical energy storage device, with a first connection electrically connected to the first pole, with a second connection electrically connected to the second pole, characterized in that the battery system includes a trigger unit for triggering the fast discharge unit.