2016年9月,川源科技前身推出“全球首款”極片電阻測試儀; 2017年3月,川源科技公司成立,正式發(fā)布G1系列極片電阻產(chǎn)品; 2020年9月,發(fā)布 “全閉環(huán)式伺服氣動控制系統(tǒng)”及G2系列產(chǎn)品; 2021年4月,發(fā)布“新一代全閉環(huán)伺服電動控制系統(tǒng)”豐富產(chǎn)品系列; 2022年6月,發(fā)布全球首款一鍵式極片面密度、壓實密度、厚度、電導(dǎo)率的G3系列產(chǎn)品; 2022年7月,發(fā)布全球首款“多電極極片電阻測試系統(tǒng)Magic系列”-實現(xiàn)極片面電阻分解測量;
L3:極片電阻測試的必要性
當(dāng)前,極片電阻的評價研發(fā)與生產(chǎn)中逐漸成為主流,主要基于其在提高電池開發(fā)效率與生產(chǎn)可靠性及降低降低開發(fā)與生產(chǎn)成本方面;
The evaluation of electrode resistance has gradually become the mainstream in R&D and production. It is mainly based on the improvement of R&D efficiency and Manufacturing reliability.
技術(shù)發(fā)展迭代
基材/極片電阻測試原理
采用可控壓四線制雙探頭電阻法,基于高精度位移、電壓電流、壓力、溫濕度傳感,實現(xiàn)持續(xù)、精準(zhǔn)、穩(wěn)定監(jiān)測極片極致條件下電阻特性。
解決方案1:極片整體電阻測試(G2, G2A, G2R)
相比于傳統(tǒng)四探針,ACCFILM的四端子測試方法(排除接觸電阻)才適用于膜片電阻測試。
Compared with the traditional four probe, the strategy of ACCFILM electrode resistance test system is really suitable for battery electrode resistance test.
解決方案2:底涂電阻&面密度等綜合測試系統(tǒng)(G3)
ACCFILM膜片電阻測試系統(tǒng)集成高精密質(zhì)量傳感器,實現(xiàn)極片電阻、厚度、壓實密度、面密度等多參數(shù)測量一站式測量,綜合效率提高60%y以上,成本降低60%以上(四個測試工序合并成一個)。
The ACCFILM test system integrates high-precision quality sensors to realize one-stop measurement of electrode resistance, thickness, and density, which greatly improves test efficiency(>60%).
解決方案3:極片整體電阻測試&涂層電阻分解 (Magic 3R)
基于電極極片的多層結(jié)構(gòu),通過在四端子測量法的基礎(chǔ)上新增測量電極,形成全新的多電極測量方案,首次實現(xiàn)極片整體電阻及極片涂層電阻的分解,為極片電阻評估提供新的方法。
Based on the structure of the electrode, a new multi-probe measurement scheme is formed by adding a measuring probe on the basis of the four-probe method, which realizes the decomposition of electrode resistance for the first time, and provides a new method for the evaluation of the polar resistance.
測試系統(tǒng)概覽
產(chǎn)品特色與優(yōu)勢Features and Advantages
可靠性分析(R&R)
R&R可區(qū)分的類別數(shù)為8;(一般≥5即表示測量系統(tǒng)可接受)
The number of distinguishable R & R categories is 8( Generally ≥ 5 means the measurement system is acceptable);
應(yīng)用領(lǐng)域與方向
鋰電池、超級電容器等二次電池相關(guān)領(lǐng)域的生產(chǎn)制造企業(yè)、大學(xué)及科研院所科研及生產(chǎn)過程;
Manufacturing enterprises, universities and scientific research institutes of lithium battery, supercapacitor and other secondary battery related fields;
涂炭基材開發(fā)評估與生產(chǎn)環(huán)境控制參數(shù)指導(dǎo)
精準(zhǔn)測量底涂技術(shù)開發(fā)膜片的電阻變化,為極片工藝開發(fā)提供有力技術(shù)支持;
通過研究膜片在不同濕度存儲后的膜片電阻值,來為生產(chǎn)確定工序控制時間做數(shù)據(jù)支撐。以下實例可以看出,811膜片的存儲越低濕度越有利于膜片的穩(wěn)定性10%RH的濕度可考慮用于811體系的生產(chǎn)控制濕度。
極片配方開發(fā)評估
在漿料配方開發(fā)中,引入膜片電阻參數(shù),提前對配方的物性進行分析,能提前對電芯的性能進行預(yù)測判斷,較大程度提高研發(fā)效率,降低研發(fā)成本;
The introduction of electrode resistance parameters can analyze the physical properties of the formula, which can predict and judge the performance of the cell in advance, improve efficiency and reduce cost;
Step Mode_壓力加載與緩釋控制模式下極片電阻分析
基于新一代伺服控制技術(shù),可以實現(xiàn)極片在不同速率+Step壓力加載與釋放條件下電阻及厚度等相關(guān)特性測量與評價,為極片及鋰電池分析的評估提供了新的測量表征維度;
可以看出:不同極片在相同模式下反應(yīng)出
連續(xù)線性模式_不同生命周期極片評估
生產(chǎn)制程穩(wěn)定性監(jiān)控
當(dāng)前,與電芯性能穩(wěn)定性關(guān)聯(lián)度最高的“膜片電阻”未進行監(jiān)控;
The electrode resistance, which has the highest correlation with cell performance, is not monitored;
膜片電阻監(jiān)控的導(dǎo)入,可降低生產(chǎn)風(fēng)險、提高生產(chǎn)效率及產(chǎn)品可靠性;
The introduction of electrode resistance monitoring can reduce production risk, improve production efficiency and reliability;
不同溫度極片電阻分析
基于新一代伺服壓力控制與精密循環(huán)控溫技術(shù),控溫型膜片電阻測試系統(tǒng)可以實現(xiàn)不同溫度下(-20~250℃)極片導(dǎo)電性測量與評價。Based on a new generation of servo pressure control and precision cyclic temperature control technology, the new test system can realize the measurement of the conductivity of electrode at different temperatures (-20~250 °C).
示例:在RT~150℃區(qū)間內(nèi),某正極極片的電阻隨便溫度平臺的升高電阻階梯下降,總下降比例約為9%。Example: From RT~150°C, the resistance of positive electrode gradually decreases at different temperature, and the overall decrease ratio is about 9%.
極片電阻正反面分解
基于新型多探針測量技術(shù),新一代膜片電阻儀能實現(xiàn)極片整體電阻測量及其正反面電阻的分解,為產(chǎn)品開發(fā)及失效分析提供新的評價方法;Based on the multi-probe technology, the overall resistance, A and B sides can be tested, providing a new method for R&D and FA.
正極極片的正反面電阻基本一致,正反面電阻之和與整體電阻一致,證明測量方法的可靠性; The A and B sides of the positive electrode are basically the same, and the A and B sides are consistent with the overall resistance, which proves the reliability of the measurement method;
審核編輯黃宇
-
電阻測試儀
+關(guān)注
關(guān)注
2文章
148瀏覽量
25366
發(fā)布評論請先 登錄
相關(guān)推薦
評論