技術で業界をリード｜LyricのEIS充放電テスター：電池検査分野の中核ツール

急速に発展する現在の新エネルギー分野において、電池性能の正確な評価は業界の進歩を後押しする鍵の一つとなっています。Lyricが新たに開発したEIS充放電テスターは、優れた技術仕様と強力な機能により、電池の研究開発・生産・品質管理に革新的なソリューションを提供します。

LyricのEIS充放電テスターは、技術統合の象徴として、従来の化成分容機能と電気化学インピーダンススペクトル（EIS）検査技術を高度に融合し、2つのプロセスを同時に実行可能としています。主な機能は以下の2つです：

• 化成分容：電池の充放電による活性化や容量選別などの主要工程を実施

• EIS検査：SEI膜抵抗や電荷移動抵抗など、電池状態を多面的に示す中核パラメータをリアルタイムで取得

ハードウェアモジュールとソフトウェア制御のシームレスな連携により、EIS検査と化成分容機能を高度に統合。これにより工程設定が大幅に簡素化され、テストプロセスの柔軟な調整が可能に。詳細なパラメータ設定と異常マーキング機能により、高精度で効率的なテストを実現します。従来の設備切り替えや電池搬送による効率損失と比べ、この統合設計はプロセスの最適化を実現し、大量生産を安定的に支援します。

本設備は0.1Hz〜200kHzの広帯域交流信号と高精度サンプリング技術を採用し、パウチ型、角形、ブレード型など様々なタイプの電池のインピーダンス測定ニーズに対応可能。EIS検査では広範囲の励起電流入力と4段階の調整に対応し、±1%のインピーダンス測定精度を実現。充放電機能では電圧・電流の制御精度がそれぞれ±0.04%FS、±0.05%FSに達し、データの信頼性を確保します。また、正負極性の切り替え機能と、1キャビネットあたり64CHのチャンネル数で高スループット検査にも対応します。

この設備は、Rs（オーム抵抗）、Rf（SEI膜抵抗）、Rct（電荷移動抵抗）などのパラメータを分析し、内部短絡やリチウム析出、一貫性不良など10種類以上の故障を高精度で特定可能。以下のような異常検出に優れた感度を発揮します：

• 化成異常検出：正常セルと異常セルのスペクトル比較により、Rf値の低下でSEI膜未形成を特定

• 初期効率差の分析：初期効率の低いセルではRf、Rctが低下し、性能異常の関連性を明確化

• 極化検出：極化が大きいセルではRf値が上昇し、異常が直感的に判明

• 容量異常識別：容量の小さいセル（1%）はRf値の変化が顕著で、容量選別の科学的根拠となる

測定データは自動解析後MESシステムへアップロードされ、リアルタイムで電池状態を監視可能。チャンネル選択、データ比較、ナイキスト/ボード線図の表示、画像・Excel出力など、詳細かつ柔軟な分析機能を備えています。工程情報と詳細データの表示、インピーダンス自動計算機能により、分析精度と効率が保証され、リスクの低減と生産性・歩留まりの向上に貢献します。

現在、輸入EIS設備は高価かつ用途が限定されており、量産向けに適していません。また、量産段階では電気化学データの欠如により内部欠陥の早期発見が困難でした。LyricのEIS充放電テスターは、独自の知的財産技術を基盤とし、国産高性能検査設備の空白を埋めています。高精度・高信頼性・コストメリットを兼ね備えた本製品は、先進技術と経済合理性を両立し、新エネルギー企業に最適な選択肢を提供。電池検査を「経験判断」から「データドリブン」へと進化させます。

LyricEIS充放電検査装置は、単なるスペックの集合体ではなく、電池科学とエンジニアリング実践を繋ぐ架け橋です。高精度・高効率・高適合性を備え、電池検査の業界標準を再定義しつつあります。新エネルギー産業の高品質化を推進する中で、本装置は技術革新と品質保証を支える中核的存在となるでしょう。

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The Technology of the Industry | Lyric EIS Charge-Discharge Tester: The Core Tool in Battery Detection

In today's rapidly evolving new energy sector, accurate assessment of battery performance has become one of the key drivers of industry advancement. The latest EIS charge-discharge tester launched by Lyric, with its outstanding technical parameters and powerful functional features, offers a brand-new solution for battery R&D, production, and quality control.

Lyric's EIS charge-discharge tester, as a model of technological integration, achieves the coordinated operation of two processes by deeply merging traditional formation and grading functions with electrochemical impedance spectroscopy (EIS) detection technology. Its core functionalities encompass two aspects: Formation and Grading – Performing key processes such as battery charge/discharge activation and capacity sorting. EIS Testing – Acquiring critical parameters like SEI film impedance and charge transfer resistance in real time through electrochemical impedance spectroscopy, providing multidimensional data support for battery status analysis.

Lyric's EIS charge-discharge tester achieves high integration of EIS detection with formation and grading functions through seamless hardware-software coordination. This design significantly simplifies process configuration, supports flexible test flow adjustments, and ensures efficient and precise testing with detailed parameter settings and anomaly flagging capabilities. Compared to the efficiency losses caused by equipment switching and battery handling in traditional setups, this device optimizes the production process with its integrated architecture, delivering stable support for large-scale manufacturing.

High-Precision Detection: Comprehensive Scientific Analysis Across Full Frequency Bands

The equipment employs wide-band AC signals (0.1Hz to 200kHz) and high-precision sampling technology, combined with range adjustment functionality, to meet the impedance measurement requirements of various battery types including consumer-grade pouch cells, power-oriented prismatic cells, and blade batteries. The EIS detection features a wide excitation current input range with 4 adjustable ranges, achieving impedance measurement accuracy of ±1% and covering a frequency range from 0.1Hz to 200kHz. The charge-discharge function achieves voltage and current measurement control accuracies of ±0.04% FS and ±0.05% FS respectively, ensuring reliable data acquisition. Additionally, the equipment features polarity switching capability and offers up to 64 channels per power cabinet, meeting high-throughput testing requirements.

Multi-Type Anomaly Detection: Data-Driven Risk WarningBy analyzing battery parameters including ohmic resistance (Rs), SEI film resistance (Rf), and charge transfer resistance (Rct), the system can accurately identify over 10 types of faults such as internal short circuits, lithium plating, and consistency defects. The technology demonstrates outstanding sensitivity in formation, grading and structural defect detection:

• Formation Anomaly Identification: By comparing the impedance spectra of normal and abnormal batteries, the Rf value of abnormal batteries shows a significant decrease, indicating insufficient SEI film formation and effectively warning of formation defects.

• First-Cycle Efficiency Analysis: Batteries with low initial efficiency show decreased Rf and Rct values, demonstrating the correlation between first-cycle performance and electrochemical characteristics;

• ACT Polarization Testing: Cells with high polarization demonstrate increased Rf values, directly indicating polarization abnormalities

• Capacity Anomaly Identification: Low-capacity cells (1%) display prominent Rf value variations, offering scientific basis for capacity screening.

Intelligent Data Processing: Closed-Loop Management Enhances Manufacturing Efficiency

Test data is automatically analyzed and uploaded to the MES system, enabling real-time monitoring of battery status. The system supports channel selection, data comparison, and Nyquist/Bode plot display, with export capabilities for both image and Excel files to facilitate in-depth analysis. Meanwhile, the function of displaying work step information and detailed data, combined with intelligent impedance value calculation, ensures the accuracy and efficiency of data analysis. This closed-loop management mechanism not only reduces safety risks but also significantly improves production capacity and product yield rates.

A New Benchmark for Domestic Alternatives: Addressing Industry Pain Points

Currently, imported EIS equipment remains prohibitively expensive with limited applicability, failing to meet batch testing requirements. Meanwhile, the lack of electrochemical data during mass production makes it difficult to identify internal battery defects in advance. Lyric’s EIS charge-discharge tester takes independent intellectual property rights as the core, filling the technical gap of domestic high-end testing equipment. With its high precision, high reliability and cost advantages, it provides new energy enterprises with solutions that combine technical advancement and economic feasibility, promoting the comprehensive upgrade of battery testing from "experience-based judgment" to "data-driven".

Lyric’s EIS charge-discharge tester is not just a collection of technical parameters, but also a bridge between battery science and engineering practice. Its characteristics of high precision, high efficiency and high adaptability are redefining the industry standards for battery testing. In the process of the new energy industry moving towards high-quality development, this equipment will undoubtedly become the core force to promote technological innovation and ensure product quality.

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