Solid State Battery Power Unit for Portable Liquid Discharge

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Solution Overview

Problem

Portable mobile devices, such as portable printing apparatuses, face a trade-off between longer battery life and portability, as increasing battery capacity to enhance longevity results in larger devices, and carrying additional charging equipment compromises portability.

Innovation Solution

A liquid discharge apparatus and power unit configuration that includes a power supply circuit converting alternating voltage to direct voltage, a solid state battery for storing electric charge, and a switch circuit to manage power output, allowing for efficient power management without the need for external charging adapters.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of moving object

If battery capacity is increased to extend powering duration, then battery life is improved, but device size increases

Engineering Contradiction:
Improvebattery lifeVSAvoiddevice size
Core Design Contradiction:
Duration of action of moving objectVSVolume of moving object

Solution Approach 1:

The power unit is divided into multiple functional modules: power supply circuit (with rectifier and voltage regulator), solid state battery, and charging circuit, each performing specific functions. This segmentation allows for compact arrangement and efficient space utilization within the device housing.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The power supply circuit, solid state battery, and charging circuit are merged into a single integrated power unit housed together in one housing. This combination eliminates the need for external charging adapters and reduces overall device complexity while maintaining long battery life.

Inventive Principle:
Principle #5Merging (Combining)

2Adaptability or versatility

If additional power supply equipment is carried for charging, then battery charging capability is improved, but portability deteriorates

Engineering Contradiction:
Improvecharging capabilityVSAvoidportability
Core Design Contradiction:
Adaptability or versatilityVSWeight of moving object

Solution Approach 1:

The charging circuit is merged with the power supply circuit and solid state battery into a single integrated power unit. This eliminates the need for separate external charging adapters, maintaining full charging capability while preserving device portability.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The device contains its own charging circuit that can charge the solid state battery using power from the power supply circuit. The system is self-sufficient and does not require external charging equipment, enabling portability while maintaining charging capability.

Inventive Principle:
Principle #25Self-service

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

This configuration enables longer battery life without increasing device size, maintaining portability by integrating power management within the device and using a solid state battery with enhanced safety and flexibility.

Implementation Method 1

a power supply circuit configured to convert an alternating voltage into a first direct voltage and a second direct voltage

Methodology Applied
Scientific EffectElectromagnetic rectification: Electromagnetic Induction

Implementation Method 2

a solid state battery configured to output a third direct voltage corresponding to a stored electric charge

Methodology Applied
Scientific EffectElectrochemical energy storage: Battery (electricity)

Data Source

PatentUS11465408B2Liquid discharge apparatus, mobile device, and power unit
Publication Date: 2022.10.11 SEIKO EPSON CORP
  • US11465408B2 patent drawing
  • US11465408B2 patent drawing
  • US11465408B2 patent drawing

AI summary

A liquid discharge apparatus includes a drive signal output circuit configured to output a drive signal, a power unit configured to supply a power source voltage to the drive signal output circuit, and a first housing that accommodates the drive signal output circuit, and the power unit. The power unit includes a power supply circuit configured to convert an alternating voltage into a first direct voltage and a second direct voltage, and output the first direct voltage, a substrate on which the power supply circuit is provided, a solid state battery configured to output a third direct voltage corresponding to a stored electric charge, a charging circuit configured to store an electric charge in the solid state battery based on the second direct voltage, and a second housing that accommodates the power supply circuit, the solid state battery, and the charging circuit.