Wireless Device Energy Discharge Limiting Module

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Solution Overview

Problem

Rechargeable energy storage components in mobile devices face reduced energy storage capacity and recharging cycles when operating outside their specified temperature range of −10° C. to +60° C., necessitating a method to extend their operational temperature range and prolong their useful life.

Innovation Solution

An energy discharge limiting module within wireless communication devices senses temperature thresholds and adjusts the discharge energy rate to maintain the device within specified tolerances, reducing power drain by disabling non-essential features, reconfiguring network registrations, and lowering discharge rates when temperatures exceed the range, thereby ensuring continued operation over an extended temperature range.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If rechargeable energy storage components operate outside their specified temperature range, then the operational temperature range is extended, but the energy storage capacity and number of recharging cycles are reduced

Engineering Contradiction:
Improveoperating temperature rangeVSAvoidenergy storage capacity and recharging cycles
Core Design Contradiction:
TemperatureVSReliability

Solution Approach 1:

The system dynamically adjusts the discharge energy rate based on real-time temperature sensing. When the temperature exceeds the specified range, the controller automatically reduces the discharge energy rate to prevent damage to the energy storage component, while still allowing operation to continue. This dynamic adjustment resolves the contradiction by adapting the operating parameters to temperature conditions.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The invention changes the discharge energy rate parameter in response to temperature variations. By sensing the temperature and adjusting the discharge energy rate accordingly, the system allows extended temperature operation while maintaining reliability through parameter modification. The controller modifies operational parameters based on temperature feedback to balance extended range with component protection.

Inventive Principle:
Principle #35Parameter changes

2Duration of action of stationary object

If the discharge energy rate is reduced to protect the energy storage device, then the useful life is prolonged, but the power output and operational performance are limited

Engineering Contradiction:
Improveuseful life of energy storage deviceVSAvoiddischarge energy rate and power output
Core Design Contradiction:
Duration of action of stationary objectVSPower

Solution Approach 1:

The system implements dynamic control of the discharge energy rate based on temperature conditions. During normal temperature operation, the full discharge energy rate is maintained for optimal performance. When temperature exceeds specifications, the controller dynamically reduces the discharge energy rate to protect the energy storage component, thereby prolonging its useful life while minimizing impact on power output during critical periods.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The invention employs a feedback mechanism where temperature sensors continuously monitor the temperature of the energy storage component, and the controller adjusts the discharge energy rate based on this feedback. This closed-loop control ensures that the discharge rate is optimized for both performance and component protection, reducing power output only when necessary to extend device lifespan.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS7978088B2Device and method to prolong the life of an energy source
Publication Date: 2011.07.12 GOOGLE TECHNOLOGY HOLDINGS LLC
  • US7978088B2 patent drawing
  • US7978088B2 patent drawing
  • US7978088B2 patent drawing

AI summary

A wireless communication device (200) and method (300) adapted to prolong the useful life of an energy storage device is disclosed. In its simplest form, it can include: determining (310) a limit temperature discharge energy rate of an energy storage device; sensing (320) a temperature range threshold in proximity to the energy storage device; and adjusting (330) a discharge energy rate in response to the determined limit temperature discharge energy rate (310) and sensed temperature range threshold (320). The device (200) and method (300) can automatically and dynamically manage current drain of an energy storage device when a certain temperature range threshold is reached, to maintain the energy storage device within desired specifications and tolerances. This can prolong the useful life of the energy storage device and help to maintain a maximum recharging capacity.