Dynamic Charge Stop Voltage Control for Battery Lifespan
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Solution Overview
Problem
Rechargeable battery power sources in electronic devices, such as label producing apparatuses, deteriorate quickly when charged to a fully-charged state, leading to reduced lifespan, and existing technologies do not adequately consider methods to prolong battery life by avoiding full charges.
Innovation Solution
An electronic apparatus with a CPU that acquires capacity-related information and decides a charge stop voltage based on this information to control the charging process, stopping at a voltage lower than the fully-charged state to prevent battery deterioration, using a decision table that considers factors like printing rate, tape width, tape type, and ambient temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the battery power source is charged to a fully-charged state, then the charging capacity is maximized, but the battery deteriorates quickly and lifespan is reduced
Solution Approach 1:
The patent applies partial action by charging the battery only to a predetermined voltage level (e.g., 4.2V or 4.35V) rather than charging to the maximum possible voltage (fully-charged state). This partial charging approach prevents the battery from reaching conditions that cause rapid deterioration, thereby extending battery lifespan while still providing sufficient charging capacity for device operation
Solution Approach 2:
The patent changes the voltage parameter threshold for stopping charging. Instead of charging to the traditional fully-charged voltage level, the system dynamically adjusts the stop voltage to a predetermined lower level. This parameter change effectively balances charging capacity with battery health preservation, resolving the contradiction between maximizing charge and extending lifespan
2Reliability
If the charging process is stopped before full charge, then battery deterioration is prevented, but the charging capacity is reduced
Solution Approach 1:
The system performs partial charging by stopping at a predetermined voltage threshold, accepting reduced charging capacity as a necessary trade-off to prevent battery deterioration. This approach recognizes that slightly less charge is preferable to the long-term cost of battery replacement
Solution Approach 2:
The charging control system uses feedback mechanisms to monitor battery voltage during charging and automatically stops when the predetermined voltage level is reached. This feedback control ensures consistent partial charging that protects battery health while providing adequate power for device operation
Data Source
AI summary
The disclosure discloses an electronic apparatus including a charging device, a plurality of operation mechanisms, and a CPU. The CPU is configured to execute an information acquisition process, a voltage decision process, and a charging control process. In the information acquisition process, capacity-related information corresponding to a charging capacity required for operation of the operating mechanisms is acquired. In the voltage decision process, a charge stop voltage is decided in accordance with the capacity-related information acquired. In the charging control process, the charging device is controlled to stop the charging process by using as a trigger an attainment of the charge stop voltage decided after start of the charging process.