12月12日，海辰储能在主题为“三体·新世界”首届海辰储能生态日上，重磅发布全球首款kAh长时储能专用电池MIC 1130Ah。这是海辰储能针对电力储能往更大规模发展趋势，专为长时储能市场打造的千安时级超大容量电池。MIC 1130Ah的体积能量密度达到400Wh/L，提升15%以上，能帮助储能直流侧系统降本25%（相较于280Ah产品）。同时满足长时储能所需要的超大容量、超长寿命、超高安全、超低成本的需求。
储能大发展，困局却难破？
随着各国发展大规模的可再生能源发电，将带来更大规模的储能市场需求；并且为提升可再生能源利用率，驱动着储能往4-8小时的长时储能快速发展。与此同时，单体储能电站规模逐步向GWh、甚至TWh级别迈进，进一步使得市场对于长时储能专用电池的需求更为迫切。然而，尽管已有300Ah+大容量电池，但这些尝试并未真正从底层创新来寻求突破，依然满足不了市场对更大容量、更高效率、更长寿命、更低成本的需求。
近期储能市场的价格内卷，让市场呈现“红海竞争”之势，产业发展迎来阶段性市场调整。从储能长期持续健康发展来看，仍需要储能企业更深入储能技术研发和需求洞察，不断开拓新的储能深度细分市场，建立储能应用场景纵向和横向多维度发展路径。
超大电池：全新75580尺寸电池简化集成复杂度，系统集成效率提升至35%
以主流280Ah电池为例，现有直流侧储能系统的集成效率仅为25%。大量的系统空间和成本被浪费在非储能部件上。海辰储能没有选择“小修小补”，而是从客户应用场景着手、正向开发。在基于20尺集装箱储能系统下，减少电池串并联数量和模组数量，海辰储能通科学探索大容量电池的尺寸设计边界，在平衡了过流、发热、容量、制造工艺等诸多要素后，找到现阶段长时储能电池的最优解——MIC 1130Ah。其75580的尺寸定义，可使20尺集装箱储能系统中电芯数量大幅减少，模组数量减少至原来的三分之一，系统集成效率提升至35%。
全新设计：MIC 1130Ah让直流侧储能系统综合成本下降25%，寿命可达25年
千安时电池容量的大幅提升，让储能系统内的电池机械件成本降低58%，电池单Wh成本降低15%；系统模组的数量大幅减少，让系统中的高/低压和热管理连接件，模组BMU，MSD等等零部件用量成倍减少，采用MIC 1130Ah电池的系统非电芯部件降本40%；大容量电池还提升系统制造效率，减少制造设备投资。综合来看，直流侧系统综合降本可达25%。
通过全极耳叠片技术、SEI膜主动靶向快速修复技术和高电导碳层包覆技术等的加持，海辰储能MIC 1130Ah电芯在循环性能方面得到了大幅提升，可以在15000次循环后，电池SOH仍大于60%；在每天一充一放的情况下，令储能系统的服务寿命可长达25年。
更大突破：攻克大容量电池产热和安全两大挑战
超大容量下的大电流是MIC 1130Ah“与生俱来”的特性，需要解决因此而来的产热问题，才能让超大电池的“降本增效”发挥的安心无虞。另外，超大电池本身蕴藏着大能量，若在热失控情况下又如何实现精准快速排气？
要解决产热难题，海辰储能从化学体系、结构和工艺多方面出发进行设计。全新低粘高导电解液，降低液相阻抗；多元掺杂磷酸铁锂正极和低表面缺陷石墨负极，减少热效应，提升热稳定性和结构稳定性。无模切全极耳和极简三明治顶盖，扩大通路，缩短过流路径；以及率先采用先进的多层涂布技术，打造离子快速出口，加速离子迁移。多项创新技术的叠加，同时降低电子和离子的阻抗，电池直流内阻（DCR）降低67%，工作时电池温升小于5℃。
在电池内部，创新性的设计了3x3三维立体气道和定向开阀结构，快速、精准、定向的排出电池热失控时产生的气体。在MIC 1130Ah能量是280Ah四倍的情况下，电芯热失控内部温度被控制在700℃以内，和280Ah电池相当。
聚焦储能 携手共赴星辰大海
据咨询机构伍德麦肯兹统计，全球投运及在建的长时储能项目，价值已超过300亿美元。近三年投资的项目若全部建成投运，长时储能装机总量预计新增5700万千瓦，这相当于2022年全球长时储能总装机规模的3倍左右。伴随海辰储能发布其全球首款kAh长时储能专用电池之际，未来采用MIC 1130Ah的储能系统创新将为行业带来更多想象空间。
本次生态日活动上，海辰储能“全球首款集成MIC电池的6MWh储能系统”同时发布。该储能系统，得益于电池的1130Ah超大容量，将带来储能系统的全面跃升。系统拥有超大能量、超高面积能量密度、超低成本、超低LCOS以及更高系统安全性，为长时储能大规模应用发展提供系统支撑。
海辰储能真诚邀请储能行业的伙伴们携手推动储能技术的不断升级，实现行业的共赢发展。让我们携手并肩，共同打造更为高效、安全、可持续的储能未来。
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.
