装备制造行业周报（5月第4周）：固态电池产业持续推进

Investment Rating - The report does not explicitly state an investment rating for the industry [1]. Core Insights - The solid-state battery industry is advancing, with the release of the "Solid-State Battery Determination Method" standard by the China Automotive Engineering Society, which clarifies definitions and testing methods, paving the way for technological upgrades and industrial applications. Notable developments include BMW's first solid-state electric vehicles undergoing testing and domestic companies like Jinlongyu signing orders for high-energy density solid-state battery cells [3][4]. - The humanoid robot sector is gaining traction, highlighted by the first humanoid robot combat competition, which is expected to enhance interest in the sector. Recent demonstrations by Tesla and Figure's humanoid robots working in factories have contributed to this momentum [3][4]. - The photovoltaic inverter market shows positive demand trends, with China's inverter exports reaching $810 million in April 2025, a 17% year-on-year increase, and a 28% month-on-month increase. European inverter exports also saw significant growth, indicating a recovery in demand [3][4]. Summary by Sections Market Overview - In the past week, the mechanical equipment, electric power equipment, and automotive industry indices experienced declines of -2.48%, -0.71%, and an increase of +1.24%, respectively, ranking them 30th, 16th, and 2nd among 31 Shenwan primary industries [8][10]. Industry News and Key Company Announcements - The humanoid robot combat competition is set to showcase advanced robotics technology and promote industrial upgrades [18]. - Innovations in solar cell materials, particularly perovskite technology, have achieved stable mass production, marking a significant advancement from laboratory to industrial application [16]. - The total installed power generation capacity in the country reached 3.49 billion kilowatts by the end of April, with solar power capacity growing by 47.7% year-on-year [16].