Battery Pack BMS Wake-Up for Overheat and Pressure Protection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing battery systems face challenges in providing sustained high-power output for extended periods, particularly in applications like electric vehicles, where a single battery may not suffice due to capacity and power consumption issues, leading to the need for modular battery solutions with effective management and safety features to prevent accidents like overheating and explosion.
Innovation Solution
A battery pack with a modular structure comprising multiple cells and a battery management system (BMS) that includes a mechanical or electronic switch triggered by temperature and pressure sensors to detect abnormal conditions, switching to a wake-up mode to prevent safety hazards and initiate protection operations, such as cell balancing and alarm signaling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If a single battery is used in mobile devices, then the device structure remains simple, but the operating time is limited and insufficient for high-power applications
Solution Approach 1:
The battery system is divided into multiple individual battery cells, each with its own management circuit. These segmented cells can be independently monitored and managed, allowing the system to achieve extended operating time through parallel configuration while maintaining manageable complexity through modular design.
Solution Approach 2:
The patent transitions from a single-dimension battery approach to a multi-dimensional battery module architecture, organizing multiple cells in series and parallel configurations. This dimensional expansion enables simultaneous achievement of high voltage, high current, and extended operating time while maintaining structural organization through standardized module design.
2Power
If multiple batteries are connected to form a battery module for extended driving, then the output voltage and current increase, but the risk of overheating and safety accidents increases
Solution Approach 1:
Temperature and pressure sensors are pre-installed within the battery module to detect abnormal conditions before they lead to dangerous situations. The system performs preliminary monitoring of thermal and pressure states, enabling early warning and preventive action before overheating or explosion can occur.
Solution Approach 2:
The patent implements a feedback mechanism where sensors continuously monitor temperature and pressure conditions, and this information is fed back to the control system. When abnormal conditions are detected, the system automatically responds by activating warning signals or disconnecting the battery module, creating a closed-loop safety system that dynamically adjusts to prevent harmful effects.
3Reliability
If a battery management system with sensors and switches is implemented, then safety and battery health monitoring improve, but the device complexity increases
Solution Approach 1:
Each battery cell is equipped with its own management circuit that can independently monitor its voltage, temperature, and charge state. This self-service approach allows individual cells to manage their own health status without requiring constant centralized control, improving reliability through distributed monitoring while reducing overall system complexity through autonomy at the cell level.
Solution Approach 2:
The battery management system is designed with multi-functional components that perform multiple tasks. For example, the control circuit not only monitors battery status but also manages charging/discharging operations, activates warning signals, and controls the mechanical switch for disconnection. This universal design reduces the number of separate components needed, improving reliability through comprehensive monitoring while minimizing complexity through functional integration.
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
The solution ensures reliable high-power output, prevents potential accidents like explosion or ignition by detecting overheating and high pressure, and effectively manages battery health and charging states, ensuring safe operation and passenger evacuation protocols.
Implementation Method 1
a mechanical or electronic switch triggered by temperature and pressure sensors to detect abnormal conditions
Implementation Method 2
a mechanical or electronic switch triggered by temperature and pressure sensors to detect abnormal conditions
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Provided are a battery pack, and a transportation apparatus including the battery pack. The battery pack includes a battery module, a battery management system configured to control charging and discharging operations of the battery module, a power supply terminal arranged to supply operation power, and a switch connected between the power supply terminal and the battery management system, and configured to be turned on in response to an abnormal situation of the battery module. Accordingly, it is possible to provide a battery pack, and a transportation apparatus including the battery pack, which may start a suitable protection operation by waking up a battery management system for monitoring a state of the battery pack, and by controlling a charge/discharge operation thereof, by detecting an abnormal situation of a battery module even when the battery management system is in a sleep mode.