Core Insights - The article discusses the automotive battery leak detection sensor market, highlighting its importance in ensuring the safety of electric vehicle batteries and projecting significant market growth in the coming years [1]. Market Overview - The global automotive battery leak detection sensor market is expected to reach $70 million by 2031, with a compound annual growth rate (CAGR) of 10.0% over the next few years [1]. Key Manufacturers - Major manufacturers in the global automotive battery leak detection sensor market include INFICON, Shenzhen Weitek Intelligent Instrument Co., Ltd., and Marposs, with the top three companies holding approximately 76.0% market share in 2024 [6]. Industry Chain Analysis Upstream - The upstream segment consists of core components and materials supply, including semiconductor chips, gas-sensitive and pressure-sensitive elements, substrates, electrode materials, and calibration gases. This segment has high technical barriers and relies on imports for some key materials and high-end chips [7]. Midstream - Midstream companies are responsible for the research, design, and manufacturing of leak detection sensors, which include gas leak sensors, pressure sensors, humidity sensors, and liquid level sensors. The focus is on detection accuracy, response speed, and long-term reliability, with a trend towards smart, miniaturized products integrated with battery management systems (BMS) [8]. Downstream - The downstream segment primarily includes electric vehicle manufacturers and battery system integrators, who embed sensors into battery modules and thermal management systems for real-time monitoring of battery safety. The demand in this segment is growing due to rising electric vehicle sales and stricter battery safety regulations [9]. Driving Factors - The rapid expansion of the electric vehicle market, increasing battery safety standards, and heightened societal concern over battery safety incidents are driving the demand for leak detection sensors. Automakers and battery companies are investing more in enhancing battery safety, supported by regulatory policies creating a rigid demand for these sensors [10]. Obstacles - The reliance on imports for core components like high-performance gas-sensitive materials and specialized chips leads to higher costs. Additionally, ensuring stable operation of sensors in complex environments (high temperature, humidity, electromagnetic interference) increases product development and quality control pressures [11]. Industry Development Trends - Future sensors are expected to integrate deeply with battery management systems (BMS) for multi-parameter intelligent detection. The monitoring scope will expand from single electrolyte detection to include hydrogen, coolant, and environmental humidity. With advancements in domestic alternatives and reduced production costs, products are anticipated to evolve towards higher reliability, lower power consumption, and miniaturization, becoming standard safety configurations for electric vehicle batteries [12].

Group 1 - The new national standard for electric vehicle power batteries will be implemented starting July 1 next year, focusing on enhancing safety measures to prevent battery fires and explosions [1] - The new standard includes additional testing items such as bottom impact tests and safety tests after fast charging cycles, aiming to improve consumer safety [1] - Testing institutions have increased their testing activities significantly, with some even introducing tests that are more stringent than the new national standard [1] Group 2 - The testing process involves simulating extreme scenarios, such as puncturing the battery pack from below with multiple steel needles, to assess the safety of electric vehicles under complex conditions [1] - The battery pack drop test simulates a scenario where the battery pack falls from a height of 3 meters onto a steel fixture, ensuring that it does not catch fire or explode [2] - Various testing methods, including whole vehicle fire tests and collision tests, are being conducted to validate the safety of electric vehicle batteries [2]