Waterproof Splice For Outdoor EV Charging

The Booming Outdoor EV Charging Infrastructure Market

Global EV sales surpassed 14 million units in 2023, and the International Energy Agency (IEA) projects that by 2030, over 300 million EVs will be on the road worldwide. To support this scale, governments and private operators are deploying tens of millions of public and semi-public outdoor charging stations. The United States alone has committed to building 500,000 public chargers by 2030 under its National Electric Vehicle Infrastructure (NEVI) program. Europe's Alternative Fuels Infrastructure Regulation (AFIR) mandates charging points every 60 km on major highways.

This explosive growth creates enormous demand for high-reliability waterproof splice connectors — the backbone of every outdoor charging unit. Industry analysts estimate the global EV charging connector market will exceed USD 8 billion by 2030, growing at a CAGR of over 22%. Within this, waterproof and weatherproof connector components represent a significant and fast-growing sub-segment.

Industrial Applications: Beyond the Charging Pillar

While public charging pillars are the most visible application, waterproof splices for outdoor EV charging extend into a broad range of industrial and commercial scenarios:

• Highway & Motorway Fast-Charging Hubs: High-power DC fast chargers (150kW–350kW) deployed along expressways require connectors rated for high current, vibration resistance, and continuous outdoor exposure.
• Commercial Fleet Depots: Bus, truck, and logistics fleet electrification demands robust outdoor splice connections in depot charging infrastructure, often exposed to wash-down water, diesel contamination, and mechanical stress.
• Parking Structures & Open-Air Lots: AC Level 2 chargers in outdoor parking facilities must withstand years of weather cycling without seal degradation.
• Residential Curbside Charging: Urban on-street charging posts require compact, IP68-rated waterproof splices that survive puddle submersion and salt spray in coastal cities.
• Port & Shipyard EV Infrastructure: Marine-grade waterproof connectors for shore-power and EV charging at ports face salt fog, humidity, and extreme UV — demanding the highest protection classes.
• Mining & Construction Site Charging: Electric heavy machinery and haul trucks require IP69K-rated connectors that withstand high-pressure water jets and abrasive dust.

Longli has undertaken more than 60 research projects, including the Torch Program of the Ministry of Science and Technology, provincial major science and technology projects, and provincial key R&D programs. The company has received 25 scientific and technological awards, including provincial science and technology awards and provincial SME technological progress awards.

Over 20 achievements have passed provincial appraisals, with two reaching international advanced levels and twelve achieving domestic leading levels — demonstrating a consistent commitment to pushing the boundaries of waterproof connector technology for demanding outdoor applications including EV charging infrastructure.