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指导单位:

中国化学与物理电源行业协会

主办单位:

动力电池应用分会

电池中国网

撰稿 |云霓

编辑丨麦子

美编丨CBEA独耀

2025年,储能行业进入新一轮结构性调整阶段。

一方面,储能电芯、系统价格持续下行,技术快速迭代,储能装机规模快速增长。在极致降本增效、差异化竞争压力下,储能电芯作为核心部件,已由280Ah、314Ah加速向着更大容量快速迭代。

另一方面,今年2月,“136号文”落地,“强制配储”的闸门落下,储能产业将迎来真正的市场化挑战。从政策“要你装”转向市场“我要装”,储能项目不仅需要低价格,更要高品质,储能的价值链将被全面重构。

在此背景下,虽然当前“价格战”依然激烈,但业界普遍已经形成共识,即以今年6月1日为界,增量项目将直面市场化定价,届时以“价格战”为标签的快速扩张周期终将走到尽头。储能行业将开始真正的“卷价值”,行业企业之间也将由价格竞争,转向产品力、服务力的比拼,牵引行业更加重视研发投入和技术创新,市场将会趋于更加理性。

谁将定义下一代储能大电芯?

从大容量电芯本身来看,对电芯企业而言,大容量可以降低电芯的BOM和制造成本,且零部件分摊低,有利于提升产线收益;对储能业主来说,大电芯可提升土地使用效率,降低运维成本,提高投资收益。

当下,在314Ah储能电芯成为产业主流的同时,各家电池企业对于下一代电芯的规格标准尚未统一。因此,对企业来说,尽早对下一代储能电芯技术的研判和定义,抢占容量标准高地,将是其提高下一轮竞争话语权的关键途径。

日前在北京举办的一场大型储能展上,电池中国在现场看到,320Ah、392Ah、435Ah、587Ah、600Ah+甚至1000Ah+容量的电芯已大面积“登场”。打造大容量电芯和储能系统,仍是当前产业发展的趋势,只不过针对下一代电芯规格标准的最优解,电池企业都给出了各自的答案。

有业内人士认为,587Ah电芯型号可能在未来会占据更高的市场份额。“587Ah”,是宁德时代基于其天恒储能系统,在行业中最早提出的容量概念。据介绍,587Ah容量概念的提出源自宁德时代全方位、高标准、高质量的调研和实证验证。

宁德时代相关负责人表示,从电芯设计维度来看,集装箱空间的有效利用是重要考量因素。宁德时代的电池以主流的20尺集装箱为设计基础,同时,结合PCS主流的1500伏电压以及主流功率段,经过精密计算与分析,最终确定了587Ah电芯的尺寸规格。

海辰储能也联合多家企业,共同推出了∞Cell587Ah储能电池。海辰储能表示,其基于20尺集装箱的尺寸边界、50吨海运的重量边界、1500V的电压边界,以及更关键的系统架构密码和LFP化学体系的性能平衡等,最终选择415Wh/L这一黄金平衡点,在6MWh+的系统中,4列8簇为2h大容量储能系统的最佳系统拓扑架构,由此推导出587Ah电芯为“最优解”。

电芯容量标准最终将由市场需求决定

与去年储能展各家企业争相比谁电芯大、系统强、降本快,比参数、拼海报不同,今年的储能产业链企业则展现得更为“务实”。电芯企业不再一味强调“电芯越大越好”,而是更加注重“合理平衡”和产品交付与项目落地。并且也更加明确,“最终电芯容量标准将由市场需求决定”。

以瑞浦兰钧为代表的几家电池企业认为,392Ah电芯是行业内可快速实现量产的新一代储能电芯,将结合314Ah储能电芯打开更高的300Ah+市场需求。瑞浦兰钧表示,与300+Ah系列其它电芯相比,392Ah电芯尺寸变化极小,这使得其在产线及工艺方面具有极强的兼容性,改造成本低、周期短且爬产快,能够迅速实现大规模量产。并且“瑞浦兰钧拒绝盲目追逐容量指标,而是希望通过技术迭代在安全性、可靠性与经济性间寻求最优解。”

同时发布392Ah储能电芯的还有力神(青岛)和中创新航。据了解,力神392Ah储能专用电芯可同时满足0.5CP、0.25CP功率,单体电芯容量大于1.254kWh,可实现20尺标准集装箱容量达到6.25MWh。中创新航介绍称,其392Ah电芯单体容量较314Ah电芯提升25%,能效提升至95%,且与314Ah产线适配。

此外,远景动力发布了530Ah储能电芯,实现“单颗电芯超1.6度电”,适配当前市场主流储能系统方案,并将于2025年内实现量产交付;欣旺达625Ah电芯则实现了单电芯“精准2度电”,20尺集装箱6.8MWh,其短刀形态可在系统中获得33%以上的空间利用率,预计该款电芯将在今年Q3实现真正意义上的量产及批量交付;楚能新能源推出了472Ah大容量储能电芯,据介绍,该款电芯是楚能第四代储能专用大容量电芯,标称能量突破至1510.4Wh,能量密度达195Wh/kg。

值得一提的是,南都电源推出了783Ah储能大电芯,而且还是一款固态电池。据南都电源介绍,其783Ah固态电池,体积能量密度>430Wh/L,单体能量超过2.5kWh,储能时长2~8h,循环寿命>10000次,能量效率>95%。搭载该电芯的单箱储能系统容量将高达8.338MWh。

业内普遍认为,固态电池是液态电池下一代技术的首选方案之一,已成为当前动力、储能系统的热门发展方向,并且有预计称,全固态电池到2030年将有望实现量产,但现阶段仍有技术、成本等诸多难点亟待攻克。

固态电池最前沿的技术进展如何?下一代大容量储能电芯定义“谁主沉浮”?在即将于深圳举办的全球顶级电池行业盛会CIBF2025上,或许能够找到答案。

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