Battery Module BMS Power Supply Blocking Mechanism
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Solution Overview
Problem
Battery modules consume unnecessary power due to the continuous operation of the Battery Management System (BMS) even when not in use, which reduces efficiency and increases energy costs.
Innovation Solution
A battery module design that includes a first connection terminal and a BMS with a power supply blocking mechanism, where power is only supplied to the BMS when the module is in use, and a housing with recesses for the connection terminals to minimize power consumption during idle periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the BMS is continuously operated to manage the battery, then the battery management function is maintained, but power is unnecessarily consumed when the battery module is not in use
Solution Approach 1:
The BMS power supply is made dynamic rather than static. The BMS is powered on only when the battery module is connected to an external device (detected via the first connection terminal), and powered off when disconnected. This dynamic power supply state allows the system to maintain reliable battery management during operation while eliminating unnecessary power consumption during idle periods.
Solution Approach 2:
The power supply parameter to the BMS is changed based on operational status. When the battery module is not in use, the power supply parameter is set to zero (off). When the module is connected and in use, the power supply parameter is activated (on). This parameter change resolves the contradiction by adapting power consumption to actual operational needs.
2Reliability
If the BMS is continuously powered to ensure battery control, then battery safety and management are maintained, but energy costs increase during idle periods
Solution Approach 1:
Instead of continuous operation, the BMS operates periodically based on connection events. The BMS is activated only during periods when the battery module is connected to and in use with an external device, and remains inactive during idle periods. This periodic operation pattern maintains battery control reliability when needed while minimizing energy loss during non-operational periods.
3Reliability
If the first terminal and second terminal are always electrically connected, then the BMS can continuously monitor the battery, but power consumption occurs during non-operational periods
Solution Approach 1:
The electrical connection between the first terminal and second terminal is extracted or removed during non-operational periods. When the battery module is disconnected from external devices, the first terminal and second terminal are electrically decoupled, effectively taking out the power supply path to the BMS. This prevents power consumption during idle periods while allowing continuous monitoring when the module is in use.
Data Source
AI summary
A battery modules includes: a battery having a positive electrode and a negative electrode; a first connection terminal including communication terminals, a first terminal, and a second terminal, the second terminal being electrically decoupled from the first terminal and connected to the negative electrode of the battery, and the communication terminals being for communicating with outside the battery module; and a battery management system (BMS) configured to control the battery, and including a first power terminal connected with the positive electrode of the battery, a second power terminal connected with the first terminal of the first connection terminal, and a data terminal connected with the communication terminals.