12月12日，海辰儲能在主題為“三體·新世界”首屆海辰儲能生態(tài)日上，重磅發(fā)布全球首款kAh長時儲能專用電池MIC 1130Ah。這是海辰儲能針對電力儲能往更大規(guī)模發(fā)展趨勢，專為長時儲能市場打造的千安時級超大容量電池。MIC 1130Ah的體積能量密度達到400Wh/L，提升15%以上，能幫助儲能直流側(cè)系統(tǒng)降本25%（相較于280Ah產(chǎn)品）。同時滿足長時儲能所需要的超大容量、超長壽命、超高安全、超低成本的需求。

儲能大發(fā)展，困局卻難破？

隨著各國發(fā)展大規(guī)模的可再生能源發(fā)電，將帶來更大規(guī)模的儲能市場需求；并且為提升可再生能源利用率，驅(qū)動著儲能往4-8小時的長時儲能快速發(fā)展。與此同時，單體儲能電站規(guī)模逐步向GWh、甚至TWh級別邁進，進一步使得市場對于長時儲能專用電池的需求更為迫切。然而，盡管已有300Ah+大容量電池，但這些嘗試并未真正從底層創(chuàng)新來尋求突破，依然滿足不了市場對更大容量、更高效率、更長壽命、更低成本的需求。

近期儲能市場的價格內(nèi)卷，讓市場呈現(xiàn)“紅海競爭”之勢，產(chǎn)業(yè)發(fā)展迎來階段性市場調(diào)整。從儲能長期持續(xù)健康發(fā)展來看，仍需要儲能企業(yè)更深入儲能技術(shù)研發(fā)和需求洞察，不斷開拓新的儲能深度細分市場，建立儲能應(yīng)用場景縱向和橫向多維度發(fā)展路徑。

超大電池：全新75580尺寸電池簡化集成復(fù)雜度，系統(tǒng)集成效率提升至35%

以主流280Ah電池為例，現(xiàn)有直流側(cè)儲能系統(tǒng)的集成效率僅為25%。大量的系統(tǒng)空間和成本被浪費在非儲能部件上。海辰儲能沒有選擇“小修小補”，而是從客戶應(yīng)用場景著手、正向開發(fā)。在基于20尺集裝箱儲能系統(tǒng)下，減少電池串并聯(lián)數(shù)量和模組數(shù)量，海辰儲能通科學(xué)探索大容量電池的尺寸設(shè)計邊界，在平衡了過流、發(fā)熱、容量、制造工藝等諸多要素后，找到現(xiàn)階段長時儲能電池的最優(yōu)解——MIC 1130Ah。其75580的尺寸定義，可使20尺集裝箱儲能系統(tǒng)中電芯數(shù)量大幅減少，模組數(shù)量減少至原來的三分之一，系統(tǒng)集成效率提升至35%。

全新設(shè)計：MIC 1130Ah讓直流側(cè)儲能系統(tǒng)綜合成本下降25%，壽命可達25年

千安時電池容量的大幅提升，讓儲能系統(tǒng)內(nèi)的電池機械件成本降低58%，電池單Wh成本降低15%；系統(tǒng)模組的數(shù)量大幅減少，讓系統(tǒng)中的高/低壓和熱管理連接件，模組BMU，MSD等等零部件用量成倍減少，采用MIC 1130Ah電池的系統(tǒng)非電芯部件降本40%；大容量電池還提升系統(tǒng)制造效率，減少制造設(shè)備投資。綜合來看，直流側(cè)系統(tǒng)綜合降本可達25%。

通過全極耳疊片技術(shù)、SEI膜主動靶向快速修復(fù)技術(shù)和高電導(dǎo)碳層包覆技術(shù)等的加持，海辰儲能MIC 1130Ah電芯在循環(huán)性能方面得到了大幅提升，可以在15000次循環(huán)后，電池SOH仍大于60%；在每天一充一放的情況下，令儲能系統(tǒng)的服務(wù)壽命可長達25年。

更大突破：攻克大容量電池產(chǎn)熱和安全兩大挑戰(zhàn)

超大容量下的大電流是MIC 1130Ah“與生俱來”的特性，需要解決因此而來的產(chǎn)熱問題，才能讓超大電池的“降本增效”發(fā)揮的安心無虞。另外，超大電池本身蘊藏著大能量，若在熱失控情況下又如何實現(xiàn)精準快速排氣？

要解決產(chǎn)熱難題，海辰儲能從化學(xué)體系、結(jié)構(gòu)和工藝多方面出發(fā)進行設(shè)計。全新低粘高導(dǎo)電解液，降低液相阻抗；多元摻雜磷酸鐵鋰正極和低表面缺陷石墨負極，減少熱效應(yīng)，提升熱穩(wěn)定性和結(jié)構(gòu)穩(wěn)定性。無模切全極耳和極簡三明治頂蓋，擴大通路，縮短過流路徑；以及率先采用先進的多層涂布技術(shù)，打造離子快速出口，加速離子遷移。多項創(chuàng)新技術(shù)的疊加，同時降低電子和離子的阻抗，電池直流內(nèi)阻（DCR）降低67%，工作時電池溫升小于5℃。

在電池內(nèi)部，創(chuàng)新性的設(shè)計了3x3三維立體氣道和定向開閥結(jié)構(gòu)，快速、精準、定向的排出電池?zé)崾Э貢r產(chǎn)生的氣體。在MIC 1130Ah能量是280Ah四倍的情況下，電芯熱失控內(nèi)部溫度被控制在700℃以內(nèi)，和280Ah電池相當(dāng)。

聚焦儲能 攜手共赴星辰大海

據(jù)咨詢機構(gòu)伍德麥肯茲統(tǒng)計，全球投運及在建的長時儲能項目，價值已超過300億美元。近三年投資的項目若全部建成投運，長時儲能裝機總量預(yù)計新增5700萬千瓦，這相當(dāng)于2022年全球長時儲能總裝機規(guī)模的3倍左右。伴隨海辰儲能發(fā)布其全球首款kAh長時儲能專用電池之際，未來采用MIC 1130Ah的儲能系統(tǒng)創(chuàng)新將為行業(yè)帶來更多想象空間。

本次生態(tài)日活動上，海辰儲能“全球首款集成MIC電池的6MWh儲能系統(tǒng)”同時發(fā)布。該儲能系統(tǒng)，得益于電池的1130Ah超大容量，將帶來儲能系統(tǒng)的全面躍升。系統(tǒng)擁有超大能量、超高面積能量密度、超低成本、超低LCOS以及更高系統(tǒng)安全性，為長時儲能大規(guī)模應(yīng)用發(fā)展提供系統(tǒng)支撐。

海辰儲能真誠邀請儲能行業(yè)的伙伴們攜手推動儲能技術(shù)的不斷升級，實現(xiàn)行業(yè)的共贏發(fā)展。讓我們攜手并肩，共同打造更為高效、安全、可持續(xù)的儲能未來。

On December 12th, at HiTHIUM’s first Eco-Day, HiTHIUM unveiled itsfirst kAh battery cell design for long-duration storage, called “MIC 1130Ah”. The new product will represent new battery technology for the utility-scale energy storage market, breaking the 1kAh barrier for the first time.

In the dynamic global expansion of renewable energy demand, the growth of market demand has led to the urgent need for the rapid development of long-duration energy storage. In ordre to address the main concerns of capacity, efficiency, lifespan and cost, MIC 1130Ah has been introduced as an excellent solution characterized by ultra-high capacity, extended life, superior safety performance and remarkable cost-effectiveness.

Multiple breakthroughs innovations havebeen achieved in MIC 1130Ah product, like reducing the number of battery consumption in series and parallel base on the 20-foot container Battery Energy Storage System (BESS) and consequently lower modules quantity to one third than the original amount. At the same time, the system integration efficiency increases to 35%, higher than actual 25% of 280Ah cell. Compared with 280Ah cell, MIC 1130Ah has reached to more than 15% increased energy density, reaching 400Wh/L. With 1 cycle per day, MIC 1130Ah can reach to 25 years lifespan and lower LCOS.

Compared to the 280Ah, MIC 1130Ah stands out even more with its noteworthy cost reductions: a 15% decrease in Cell BoM cost per Wh, a 40% cut in system BoM per Wh, a 20% reduction in manufacturing cost per Wh, and a concurrent 20% decrease in manufacturing CAPEX per Wh. Collectively, these improvements culminate in a 25% reduction in the overall cost of the DC system.

Since heat accumulation during the charge and discharge process and safety stability has always been critical points for the high capacity batteries, HITHIUM has made more efforts and proposed its own innovation solutions. With the improvement of chemistry, structure and process of battery cell, MIC 1130Ah accomplished 67% lower of cell DCR compared with 280Ah cell, and performed low internal rising temperature within 5°C. Innovatively using multi-doping lithium-iron phosphate and low defect graphite is contributed to improve cell’s active safety, which guarantee thermal and structural stabilities. To ensure cell’s passive safety, HiTHIUM proposed its 3*3+1 gas flow path and directional precision vent, which target gas venting precisely during thermal runaway of batteries. And thus, MIC 1130Ah has achieved excellent temperature control of thermal runaway, which is quite similar to the 280Ah (<700°C) even though the capacity of MIC 1130Ah is four times than 280Ah.

During the event, HiTHIUM also announced the world premier of the “First 6MWh BESS integrated withMIC 1130Ah”, providing system support for the development of long-duration utility-scale energy storage application. Wood Mackenzie reports that the value of long-duration energy storage projects globally has surpassed $30 billion. With an anticipated addition of 57 million kWh after the completion of projects in the next three years, three times more than in 2022, the future of BESS based on HiTHIUM's MIC 1130Ah will bring vast development opportunities for the industry in this trend.