Server Cabinet Battery Self-Test via Discharge Resistor
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Solution Overview
Problem
Existing server cabinet power backup systems face challenges with low accuracy and high costs in self-testing, along with potential safety hazards, due to manual testing methods that do not effectively assess battery attenuation and discharge performance.
Innovation Solution
A server cabinet power backup system with a battery management module that controls connection and disconnection between a battery pack and a self-test resistor for automatic discharge and charge cycles, collecting charge and discharge parameters to calculate attenuation performance, thereby improving accuracy and reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual testing methods are used for battery self-test, then operational simplicity is maintained, but measurement precision and reliability deteriorate due to low accuracy in assessing battery attenuation and discharge performance
Solution Approach 1:
The battery backup unit performs automatic self-testing using its own internal components (battery pack, self-test resistor, battery management module) without requiring external testing equipment or manual intervention. The system autonomously controls charge and discharge cycles, measures electrical parameters, and evaluates battery performance independently, thereby improving measurement precision while avoiding increased device complexity.
Solution Approach 2:
A self-test resistor is introduced as an intermediary component to enable accurate measurement of battery discharge characteristics. The resistor provides a known load that allows the battery management module to precisely measure discharge current, voltage, and time parameters, thereby improving measurement accuracy without requiring complex external testing equipment.
2Measurement precision
If deep discharge testing is performed to accurately assess battery attenuation, then measurement precision improves, but harmful factors increase due to potential safety hazards and impact on other power backup units
Solution Approach 1:
The power backup system is divided into independent battery backup units, each capable of performing self-testing independently. This segmentation ensures that deep discharge testing in one unit does not affect other units or the main server, as each unit operates autonomously with its own battery pack, self-test resistor, and control module. The isolation eliminates harmful impacts on other systems while maintaining measurement precision.
Solution Approach 2:
The system performs safety checks and establishes protective controls before initiating deep discharge testing. The battery management module monitors voltage, current, and temperature parameters throughout the test, and automatically terminates the discharge cycle if safety thresholds are approached, thereby preventing safety hazards while still achieving accurate battery attenuation assessment.
3Reliability
If periodic self-testing is implemented to monitor battery capacity attenuation, then reliability improves, but loss of time increases due to testing duration
Solution Approach 1:
The system performs partial discharge testing rather than complete deep discharge cycles during periodic self-tests. The battery management module conducts sufficient discharge to measure key performance parameters (voltage, current, time) and calculate capacity attenuation, then terminates the test before full depletion. This partial action approach maintains reliability for monitoring battery degradation while significantly reducing test duration compared to complete discharge cycles.
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 system enables precise and automatic self-testing of battery performance, reducing manual operations, saving costs, and ensuring safety by implementing deep discharge and full charge/discharge cycles without affecting other power backup units or the server.
Implementation Method 1
a battery pack 102, a battery management module 103, and a self-test resistor 104... the battery pack 102 to supply power to the self-test resistor 104 to discharge the battery pack 102, and controls the battery pack 102 to be charged after the battery pack 102 is discharged
Implementation Method 2
the battery pack 102 to supply power to the self-test resistor 104 to discharge the battery pack 102
Data Source
Figure 1
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AI summary
Embodiments of the present disclosure provide a server cabinet power backup system and a testing method thereof, and relate to the field of power backup technology. A specific implementation includes: in a self-test process of the power backup unit, the battery management module is configured to: control the battery pack to supply power to the self-test resistor to discharge the battery pack, control the battery pack to be charged after the battery pack is discharged, and collect a charge and discharge parameter of the battery pack, and the battery management module is further configured to: determine attenuation performance of the power backup unit according to the charge and discharge parameter of the battery pack. Thus, the self-test on the battery pack in the power backup unit in the server cabinet power backup system is implemented, which reduces manual operations, and improves a test efficiency of the power backup system.