Innovating Energy Devices.

バッテリー開発の最前線で、専門的な知見をもとに次世代エナジーデバイスの革新を牽引する。

Expert Services

R&D support and consulting based on specialized knowledge.
専門的な知見による研究開発支援とコンサルティング

Energy Device R&D

Next-generation material development using advanced analysis and simulation.
  • Electrochemical Reaction Analysis電気化学反応の精密解析
  • Material Performance Optimization新規材料のパフォーマンス最適化
  • Virtual Prototyping & Designバーチャルプロトタイピング
  • Degradation Root Cause Analysis劣化の根本原因究明

Consulting

Professional insights for all challenges in battery development.
  • Development Support開発支援
  • Process Improvementプロセス改善
  • Data Analysis Servicesデータ解析
  • Educational Support教育支援

Updates

Latest simulator releases, modeling enhancements, and tool updates.
最新のシミュレータ公開・機能拡張・更新情報

2026.08
Thin-Film Solid-State Battery (TFSSB) Simulator Launched 薄膜全固体電池シミュレータ(移動境界・応力OCVシフト・EIS解析)を公開
2026.08
Battery Simulator Web - SPMe & Pack Thermal Studio (3D FVM + CFD) Released 3D熱連成モジュール(SPMe+3D FVM熱伝導+CFD冷却流動)を公開
2026.07
Battery Simulator Web - SPMe-LifeFitting Updated (DC-R Output Added) 劣化寿命予測シミュレータに直流内部抵抗(DC-R)自動算出機能を追加・更新
View Full Update History / 全ての更新履歴を見る

Digital Solutions

Original analysis tools for efficient device development.
効率的な開発を実現する独自開発の解析ツール

📊

Excel DRT

Accelerated Relaxation Time Distribution analysis via optimized Excel VBA algorithms.
🔋

Battery Simulator Web - SPM

Physics-based electrochemical simulation for quick estimation of battery behavior (Single Particle Model).
🧪

Battery Simulator Web - SPMe

Advanced SPM considering electrolyte concentration gradients and potential drop.
⚙️

SPMe Curve Fitting Tool

Automated parameter identification from experimental data using SPMe physics engine.

Battery Simulator Web - SPMe-LifeFitting

Physics-based battery degradation kinetics (LLI, LAM) and lifetime simulation engine.
💡

SPMe to SPICE

Extract temperature-sensitive LTspice subcircuits from physical battery models.
🧬

Battery Simulator Web - DFN

Detailed Doyle-Fuller-Newman (DFN) model electrochemical simulation in the browser.
🧪

Electrolyte Simulator - DNN

Deep Neural Network predictor for multi-component electrolyte transport properties (conductivity, diffusivity, transference number).

Battery Simulator Web - Electrolyte DNN + SPMe

Interactive web application combining electrolyte property estimation DNN with SPMe solver.
⚖️

Energy, Power, and Cost Trade-offs

Evaluate the relationship between physical battery design and active material costs (BOM).
🧊

Battery Simulator Web - SPMe & Pack Thermal Studio

Multi-physics simulator coupling SPMe electrochemistry, 3D finite volume thermal networks (FVM), and CFD pack cooling fluidics.
🔬

Thin-Film Solid-State Battery (TFSSB)

High-fidelity 1D chemo-mechanical and electrochemical simulation engine for all-solid-state micro-batteries (LiPON, moving boundaries, stress OCV, EIS).

Physics Model Matrix

Comparative overview of physics formulations and use cases.
シミュレーション物理モデルの比較と選定ガイド

Model / Tool
モデル / ツール名
Key Physics & Equations
支配方程式・主要物理
Speed / Complexity
計算速度 / 規模
Best Application / Use Case
適用領域・推奨ユースケース
Links
解説リンク
SPM (Single Particle)
単一粒子モデル
Spherical Fickian solid diffusion + Butler-Volmer kinetics
球状固体拡散 + バトラー・ボルマー反応速度論
Ultra Fast (~1ms) Low-to-medium C-rate (<0.5C), thin electrodes, real-time BMS
低〜中レート(<0.5C)、薄膜電極、リアルタイムBMS
Theory
SPMe (SPM + Electrolyte)
電解液考慮SPM
Solid diffusion + asymptotic liquid concentration & potential drop
固体拡散 + 電解液濃度勾配・電位降下の漸近近似
Very Fast (~5ms) Moderate C-rates (0.5C–3C), standard EV cells, rapid parameter sweeps
標準EVレート(0.5C〜3C)、一般セル設計、高速パラメータ探索
Theory
DFN (Newman P2D)
Newman P2Dモデル
Coupled solid/liquid PDEs across electrode thickness & non-uniform kinetics
厚み方向の固液連成偏微分方程式 + 不均一反応分布
High Precision (~100ms) High C-rates (>3C), thick commercial electrodes, liquid depletion analysis
急速充電(>3C)、厚膜電極、液中イオン枯渇解析
Theory
TFSSB (Solid-State)
薄膜全固体電池モデル
LiPON 1D transport + Stefan moving boundary + hydrostatic stress OCV shift
LiPON固体輸送 + Stefan移動境界 + 静水圧応力OCVシフト
Coupled Physics (~20ms) Thin-film micro-batteries, Li metal plating/stripping, chemo-mechanics & EIS
薄膜全固体電池、Li金属析出溶解、ケモメカニクス、EIS解析
Theory
LifeFitting
寿命・劣化解析
SPMe + SEI growth kinetics + LLI / LAM degradation
SPMe + SEI成長速度論 + LLI / LAM劣化モード分離
Fast Multi-cycle Cycle/calendar life prediction, warranty estimation, degradation deconvolution
サイクル/カレンダー寿命予測、保証期間評価、劣化要因特定
Theory
Module 3D Thermal
3D熱連成モジュール
SPMe electrochemistry + 3D Finite Volume (FVM) thermal + CFD cooling network
単セルSPMe + 3次元有限体積(3D FVM)熱伝導 + CFD冷却流動
Interactive 3D Battery pack thermal runaway, cell-to-cell thermal gradients, cooling channel design
パック熱暴走予測、セル間温度ばらつき、冷却流路最適化
Theory
Electrolyte DNN
電解液物性DNN
Deep Neural Network trained on multi-component solvent/salt formulations
多成分溶媒/塩ブレンドの物性を学習した多層ニューラルネットワーク
Instant (<1ms) Conductivity, diffusivity, transference number screening for novel formulations
新規電解液レシピの導電率・拡散係数・輸率の高速スクリーニング
Theory
Excel DRT
緩和時間分布解析
Tikhonov regularization deconvolution of EIS impedance spectra
Tikhonov正則化・L-curve法によるEISインピーダンス逆畳み込み
High Resolution Impedance feature separation without pre-assumed equivalent circuits
等価回路モデルを事前仮定しない電極反応プロセスの高分解能分離
Tool Page

Problem-to-Solution Selection Guide

Find the ideal physical modeling tool tailored to your specific engineering challenge.
開発課題・解析目的に応じた最適なシミュレーションツールの逆引き選定ガイド

High-Rate / Fast Charge
High C-Rates (>2C) & Thick Electrode Design
急速充電(>2C)および厚膜電極の液中イオン枯渇解析

Need to evaluate liquid concentration depletion, solid-liquid phase overpotentials, and non-uniform local current density across electrode thickness.

Recommended: BattSimWeb-DFN
Standard EV Screening
Rapid Multi-Condition Screening (0.5C - 2C)
実用0.5C〜2C領域の高速スクリーニング・多数条件比較

Need high accuracy accounting for electrolyte diffusion overpotentials while requiring millisecond-level solving speeds for large parameter sweeps.

Recommended: BattSimWeb-SPMe
Thermal & Pack Design
Pack Heat Generation & 3D Cooling Architecture
モジュール発熱・3次元温度分布・冷却流動(CFD)連成解析

Evaluate multi-cell thermal gradients, hotspot propagation, and bottom liquid / tab cooling effectiveness coupled with electrochemical heat sources.

Recommended: BattSimWeb-Module
Degradation & Life
Aging Kinetics & Lifetime Prediction (SEI / LLI / LAM)
劣化要因同定・サイクル寿命予測・直流内部抵抗(DC-R)評価

Identify physical degradation modes (SEI growth, Loss of Lithium Inventory, Loss of Active Material) and predict multi-cycle capacity retention & DC-R increase.

Recommended: BattSimWeb-LifeFit
All-Solid-State
Solid-State Micro-Batteries & Li Metal Moving Boundaries
薄膜全固体電池(LiPON)・金属Li析出溶解・応力OCVシフト

Model thin-film solid-state cells with Stefan moving boundary tracking for Li plating/stripping, hydrostatic stress-induced OCV shifts, and dynamic EIS spectra.

Recommended: BattSimWeb-TFSSB
Electrolyte Formulation
Solvent Blend Optimization & Transport Property Prediction
多成分電解液溶媒ブレンドの物性予測・セル特性連成評価

Instantaneously predict ionic conductivity, diffusivity, and transference numbers from solvent ratios via deep neural networks, and simulate cell-level rate capability.

Recommended: ElSim-BattSim-SPMe
Circuit & BMS Co-Simulation
Power Circuit Simulation & SPICE Subcircuit Generation
BMS制御・回路シミュレータ(LTspice)連携等価回路モデル生成

Transform physics-based electrochemical parameters into temperature-sensitive electrical equivalent subcircuits (.subckt) for seamless power electronics design.

Recommended: SPMe to SPICE
Cost & Dimensioning
Electrode Dimensioning & BOM Material Cost Optimization
極板寸法設計・エネルギー密度・部材原材料コスト(BOM)トレードオフ

Quantify the direct trade-off between coating thickness, active material mass loading, cell power/energy ratio, and active material Bill of Materials cost.

Recommended: BattSimWeb-Econo
Impedance Analysis
EIS Reaction Mechanism Separation & DRT Deconvolution
交流インピーダンス(EIS)の素過程分離・緩和時間分布解析

Separate overlapping semicircles in battery EIS spectra into distinct physical peaks (contact, SEI, charge transfer, diffusion) without arbitrary equivalent circuit assumptions.

Recommended: Excel DRT
Parameter Identification
Automated Parameter Fitting from Experimental Curves
実測充放電電圧カーブからの物理パラメータ自動同定

Extract kinetic, transport, and thermodynamic parameters directly from experimental charge/discharge curves using automated multi-step non-linear optimization.

Recommended: BattSimWeb-Fitting

Battery Engineering FAQ

Direct answers to frequently asked technical and modeling questions.
電気化学モデリング・シミュレーションに関する技術FAQ

Q
What is the criteria for choosing between SPM, SPMe, and DFN models? SPM、SPMe、DFNモデルの使い分けの基準は何ですか?

SPM (Single Particle Model) is optimal for low-to-medium C-rates (<0.5C) and thin electrodes where electrolyte concentration gradients are negligible, offering ultra-fast execution (~1 ms). SPMe (SPM with Electrolyte) captures liquid-phase concentration and potential drops via asymptotic expansions, enabling accurate simulation for standard EV operating regimes (0.5C–3C) within milliseconds. DFN (Doyle-Fuller-Newman / P2D) solves fully coupled solid-liquid PDEs across electrode thickness, essential for high C-rates (>3C), thick commercial electrodes, and electrolyte depletion analysis.

SPM(単一粒子モデル)は、電解液の濃度変化が無視できる低〜中Cレート(<0.5C)や薄型電極で超高速に計算したい場合に最適です。SPMe(電解液考慮SPM)は電解液の濃度勾配と電位降下を漸近近似で解くことで、実用的な0.5C〜3C領域を高精度かつミリ秒単位でシミュレーションできます。DFN(Newman P2Dモデル)は、厚膜電極や急速充電(>3C)など、電極厚み方向の液中イオン枯渇や不均一反応分布を正確に捉えたい場合に適しています。

Q
What key physics and chemo-mechanical phenomena are modeled in TFSSB? 全固体電池シミュレータ(TFSSB)ではどのような物理現象を考慮していますか?

BattSimWeb-TFSSB models thin-film solid-state cells with solid electrolytes (e.g., LiPON) and lithium metal anodes. It couples Stefan moving boundary conditions for lithium plating/stripping thickness evolution, hydrostatic stress generation with stress-induced equilibrium potential shifts (Stress-induced OCV shift), solid-state ion transport, and dynamic electrochemical impedance spectroscopy (EIS Nyquist) directly in the browser.

BattSimWeb-TFSSBは、LiPONなどの固体電解質と金属リチウム負極からなる薄膜全固体電池に対応しています。リチウムの析出・溶解に伴う膜厚変化を解くStefan移動境界(Moving Boundary)、インターカレーションに伴う格子体積変化と静水圧応力(Hydrostatic Stress)による化学ポテンシャル・平衡電位変化(Stress-induced OCV shift)、さらに周波数応答(EIS Nyquist)の連成計算をWebブラウザ上で完全実行します。

Q
How are battery heat generation, 3D thermal networks, and pack cooling evaluated? セルの発熱とパックの3次元冷却はどう評価できますか?

BattSimWeb-Module (SPMe & Pack Thermal Studio) couples single-cell SPMe electrochemical heat generation (irreversible reaction overpotentials, ohmic/Joule losses, and reversible entropic heat) with a module-level 3D Finite Volume Method (3D FVM) thermal network and fluid cooling (CFD channel/bottom cooling). This enables real-time visualization of cell-to-cell thermal gradients and hotspot evolution.

BattSimWeb-Module(SPMe & Pack Thermal Studio)では、各単セルの電気化学発熱(過電圧熱・オーム損ジュール熱・可逆エントロピー熱)をリアルタイム計算し、モジュール全体の3次元有限体積法(3D FVM)熱伝導ネットワークおよびボトム液冷・タブ冷却等の流体冷却(CFD流動)に連成します。セル間の温度ばらつきや最大温度上昇を3Dで即座に評価できます。

Q
Are these battery simulation tools free and secure to use for proprietary data? シミュレータの実行環境の安全性(機密保持)や利用料金について教えてください。

All ED&C simulation tools run 100% on the client side (in your web browser) using WebAssembly/JavaScript and are completely free to use. No model parameters, experimental data, or simulation results are ever uploaded to external servers, ensuring maximum IP protection for confidential R&D projects.

ED&Cの全シミュレーションツールは、Webブラウザ(Chrome, Edge, Safari, Firefox)上で100%クライアントサイドで動作し、完全無料です。データが外部サーバーに送信されることは一切なく、機密性の高い材料パラメータでも安全に計算可能です。

About the Developer

Background, research focus, and philosophy behind ED&C.
開発者紹介・専門領域・開発思想

Yuki Kusachi

Electrochemical Modeling Specialist & Battery R&D Consultant

Over 20 years of dedicated R&D experience across lithium-ion battery materials, cell engineering, electrolyte formulation, electrochemical analysis, and physics-based modeling. Having pivoted into battery research from an earlier 5-year foundation as a semiconductor engineer, I recognized the transformative potential of applying rigorous mathematical and physical modeling to energy storage devices. Driven by a mission to help experimental, chemistry-focused researchers and corporate engineers directly experience the core benefits and intuitive insights of modeling—as an accessible first step before investing in heavy, complex commercial simulators (even with certain model simplifications)—I develop and provide zero-install, confidential, client-side simulation suites that run seamlessly inside modern web browsers.

20年以上にわたりリチウムイオン電池の材料研究、セル開発、電解液研究、電気化学解析、および物理モデリングに従事。約5年間の半導体エンジニアとしての経験から電池研究へとピボットした背景から、半導体業界で培われた数理モデリングの強力なアプローチを電池分野へ広げることの計り知れない可能性を実感。化学系出身者が多い電池開発の現場や企業の実務エンジニアの方々に、高価で複雑な商用シミュレータを本格導入する前のファーストステップとして、モデル固有の前提や制限はあるものの、まずは手軽にモデリングの利点と直感的な洞察力を体感していただきたいという強い思いから、環境構築不要・100%クライアントサイド実行の独自シミュレーションスイートを開発・無償提供しています。

Electrochemical Modeling (SPM / SPMe / DFN) EIS & DRT Analysis Solid-State Batteries (TFSSB) 3D Thermal & FVM Simulation Electrolyte Transport DNN Degradation Kinetics & Life Prediction
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Technical Insights

Knowledge base and R&D insights for battery engineering.
次世代バッテリー開発に向けた専門コラム・技術解説

Explore Articles

Contact

We are actively welcoming new projects and consulting inquiries.
Whether you need technical support, custom modeling, or R&D acceleration, please feel free to reach out.

新たなプロジェクトやコンサルティングのご依頼を積極的にお受けしております。
技術的な課題解決からR&Dの加速まで、どんなことでもお気軽にご相談ください!

Academic & Literature Citation (BibTeX)
@misc{kusachi2025edandc,
  author = {Yuki Kusachi},
  title = {YK Energy Device \& Consulting: Physics-Based Battery Simulation Suite},
  year = {2025},
  url = {https://www.edandc.com/},
  note = {Accessed: 2026}
}