Cycle Test Method for Rechargeable Battery Capacity Regeneration
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Solution Overview
Problem
Rechargeable batteries used in emergency lighting systems, such as NiCD, NiMH, and lithium-ion batteries, face capacity degradation over time, leading to reduced emergency supply duration, and existing methods lack automation for optimizing battery capacity and monitoring in potentially explosive environments.
Innovation Solution
A cycle test method automates battery formation through controlled charging and discharging cycles, including temperature management, monitoring, and redundant deep discharge protection, allowing for regeneration of battery capacity and safe operation in explosive areas, with a separate housing and supply device designed for explosion-proof connections and parameter recording.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple charging/discharging cycles are performed to form the battery and optimize capacity, then battery capacity is improved, but time consumption increases
Solution Approach 1:
The battery is automatically formed during the first startup by performing multiple charging/discharging cycles before normal operation begins. This preliminary formation process optimizes battery capacity in advance, so that subsequent operations can proceed without time loss from capacity issues.
Solution Approach 2:
The system automatically detects when battery formation is needed and executes the charging/discharging cycles without requiring manual intervention. The supply device autonomously manages the formation process, reducing the time burden on users while still achieving capacity optimization.
2Use of energy by moving object
If the battery is charged to 100% capacity, then energy storage is improved, but temperature increases due to heat generation
Solution Approach 1:
The charging process is interrupted periodically to allow the battery to cool down. After charging to a certain level, the supply device pauses the charging operation for a predetermined time, enabling heat dissipation before resuming charging. This periodic interruption continues until the battery reaches 100% capacity, balancing energy storage with temperature management.
3Reliability
If automated cycle testing is implemented to regenerate battery capacity, then reliability is improved, but device complexity increases
Solution Approach 1:
The supply device is designed to perform multiple functions: normal charging, battery formation, capacity optimization, and fault detection. By making the supply device universal, the system achieves improved reliability through automated cycle testing without adding separate dedicated devices, thus limiting the increase in overall system complexity.
Solution Approach 2:
The supply device continuously monitors battery parameters during charging and discharging cycles, using this feedback to automatically adjust the formation process. This closed-loop control ensures reliable capacity regeneration while keeping the control system manageable through intelligent algorithms rather than complex hardware.
4Measurement precision
If battery parameters are continuously monitored and recorded, then measurement precision is improved, but loss of information increases due to data management requirements
Solution Approach 1:
The supply device automatically records and manages battery parameter data without requiring external intervention. The system self-manages the data storage and analysis, converting raw measurement data into actionable insights about battery health and formation progress, thereby reducing the information management burden on users while maintaining high measurement precision.
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 method effectively optimizes battery capacity, extends emergency lighting duration, and provides self-healing capabilities, ensuring reliable operation by regenerating batteries and alerting users to malfunctions through error messages if capacity improvements are not achieved.
Implementation Method 1
During the charging, a certain part of the supplied power is generally converted into heat, which is drawn off again in this way.
Data Source
AI summary
The invention relates to a cycle test method for at least one rechargeable battery (1) having, in particular, a single-battery emergency lamp (2) as a load, wherein the battery (1) is connected to a supply device (3) for charging/discharging at the location of use, comprising the following steps:i) charging the battery (1) by means of the supply device (3);ii) interrupting the charging for a time, in particular a specified time, in order to lower the temperature of the battery (1);iii) discharging the battery (1) to a specified remaining voltage value; andiv) performing steps i) to iii) multiple times.