UPS Battery Monitoring with Timed Low-Power Check Modes
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Solution Overview
Problem
Existing battery management systems (BMS) in UPS devices face high energy consumption and inadequate monitoring during storage and transportation, leading to potential safety issues due to prolonged inactivity and inability to detect emergencies.
Innovation Solution
A UPS battery management system with a micro control unit and functional modules operating in normal, sleep, and timed check modes, where only essential modules are activated during the timed check mode to monitor battery state intermittently, reducing energy consumption while ensuring continuous monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the BMS is turned off during storage and transportation to reduce energy consumption, then energy consumption is reduced, but the BMS cannot monitor or detect battery emergencies
Solution Approach 1:
The BMS is divided into two operational states: a low-power state where only essential monitoring functions remain active, and a full-power state for complete battery management. This segmentation allows the system to reduce energy consumption while maintaining critical safety monitoring capabilities during storage and transportation.
Solution Approach 2:
The BMS implements periodic self-checks and monitoring cycles even in low-power mode, allowing it to detect battery emergencies at regular intervals without requiring continuous full operation. This periodic action ensures safety monitoring while significantly reducing overall energy consumption during extended storage periods.
2Use of energy by moving object
If the BMS is turned off to reduce energy consumption, then energy consumption is reduced, but the restart time becomes extremely long and inconvenient
Solution Approach 1:
The BMS maintains certain core functions and system readiness in a low-power state before full shutdown, including basic voltage monitoring and communication interfaces. This preliminary maintenance of critical subsystems allows for much faster restart times while still achieving significant energy savings during storage and transportation.
3Use of energy by moving object
If the BMS is turned off to reduce energy consumption, then energy consumption is reduced, but the ability to record battery state during storage and transportation is lost
Solution Approach 1:
The BMS separates monitoring functions into critical safety parameters that require continuous or periodic monitoring versus non-critical data that can be recorded on-demand. This segmentation enables the system to maintain essential battery state recording capabilities while operating in low-power mode, ensuring energy savings without complete loss of information.
Solution Approach 2:
The system performs periodic status checks and data logging even in low-power mode, recording battery voltage, temperature, and other critical parameters at scheduled intervals. This periodic data collection maintains the ability to track battery state during storage and transportation while consuming minimal energy.
Data Source
AI summary
The present invention provides a UPS battery management system, including a micro control unit and a plurality of functional modules connected to the micro control unit. The plurality of functional modules include a first group of functional modules and a second group of functional modules. The first group of functional modules is used for battery checking, and the micro control unit is configured to control the states of the functional modules so that the UPS battery management system has the following working modes: a normal working mode, wherein the micro control unit is configured to turn on the plurality of functional modules; a sleep mode, wherein the micro control unit is configured to turn off the plurality of functional modules; and a timed check mode, wherein the micro control unit is configured to, when in the sleep mode, turn on only the first group of functional modules at regular intervals so as to check a battery. The battery management system of the present invention has well-developed functions, can continuously monitor the state of a battery, has high safety performance and low energy consumption, and is convenient to operate.