NEWBASE BTMS Water-Cooled Unit Product Lineup: Complete Guide for Electric Commercial Vehicle Applications

NEWBASE BTMS Water-Cooled Unit Product Lineup: Complete Guide for Electric Commercial Vehicle Applications

Choosing the right Battery Thermal Management System (BTMS) for your electric commercial vehicle isn't just about cooling capacity — it's about matching the system's capabilities to your vehicle's battery size, charging requirements, operating environment, and space constraints.

NEWBASE (Zhengzhou NEWBASE Automotive Electronics Co., Ltd.) offers a comprehensive range of water-cooled BTMS units designed specifically for commercial EV applications. Here's a detailed guide to help you find the perfect match.

BTMS Model NBSLJZ-03-01 — Entry-Level Compact Solution

Cooling Capacity: 3.5 kW | Weight: 35 kg ± 1 kg | Dimensions: 530(L) * 446(W) * 365(H) mm

Electrical Specifications:

• High Voltage: DC 400V – DC 750V
• Low Voltage: DC 24V (18V–32V)
• Low-Voltage Power: 450W
• Built-in Water Pump: >20 L/min @ 110 kPa

Key Features:

• Configurable PTC liquid heater (6–14 kW)
• Standby, cooling, heating, and self-circulating operating modes
• CAN2.0 communication protocol
• Self-diagnostic fault detection
• Real-time power information upload
• EMC Level III compliance
• IPX7 protection rating
• Refrigerant: R134a
• Secondary refrigerant: 50% V/V ethylene glycol aqueous solution

Ideal For: Electric light-duty trucks, small VANs, and urban delivery vehicles with smaller battery packs (up to ~100 kWh).

BTMS Model NBSLJZ-05-01 — Mid-Range All-Rounder

Cooling Capacity: 5 kW | Heating Capacity: 6–14 kW (optional) | Weight: 40 kg ± 1 kg | Dimensions: 635(L) * 530(W) * 380(H) mm

Electrical Specifications:

• High Voltage: Rated 320V DC (220–450 VDC)
• Low Voltage: DC 24V (18V–32V)
• Low-Voltage Power: 600W
• Built-in Water Pump: 11m head & 1,800 L/h flow rate

Key Features:

• All NBSLJZ-03-01 features, plus enhanced cooling capacity
• 30% smaller installation footprint compared to competitors
• Mounting: 569 mm * 369 mm, Φ12 holes * 4
• Inlet/outlet water pipe: Φ25
• Custom connector configurations available

Ideal For: Electric light trucks and logistics vehicles with battery packs of 100–200 kWh. The compact design is perfect for vehicles with limited underbody space.

BTMS Model NBSLJZ-08-01 — Heavy-Duty Workhorse

Cooling Capacity: 8 kW | Weight: 50 kg ± 2 kg | Dimensions: 820(L) * 575(W) * 285(H) mm

Electrical Specifications:

• High Voltage: DC 400V – DC 750V
• Low-Voltage Power: 600W
• Built-in Water Pump: 20m head & 2,000 L/h flow rate

Key Features:

• Four-in-one / three-in-one integrated electronic control
• Network control capability
• Dual-loop redundancy for fail-safe operation
• 4C fast-charging support
• Mounting: 495 mm * 320 mm, Φ12 holes * 6
• Inlet/outlet water pipe: Φ25 (reserved overflow pipe Φ8)
• Refrigerant options: R134a or R407C

Ideal For: Electric heavy trucks, port tractors, and construction machinery with battery packs of 200–400 kWh. This is NEWBASE's most popular model, validated through over 1,500 4C fast-charging cycles with battery capacity retention above 95%.

BTMS Model NBSLJZ-10-01 — High-Capacity Solution

Cooling Capacity: 10 kW | Heating Capacity: 24 kW (optional) | Weight: 68 kg ± 2 kg | Dimensions: 960(L) * 603(W) * 291(H) mm

Electrical Specifications:

• High Voltage: 640V DC (400–750 VDC)
• Built-in Water Pump: 17.5m head & 2,880 L/h flow rate

Key Features:

• Extended cooling capacity for larger battery packs
• Four-in-one / three-in-one integrated electronic control
• Enhanced heating option (24 kW PTC) for extreme cold climates
• Network control and full CAN2.0 communication
• Same comprehensive diagnostic and monitoring features as the full range

Ideal For: Large electric buses, heavy-duty mining trucks, and specialized vehicles requiring higher thermal management capacity.

BTMS Model NBSLJZ-13-01 — Maximum Performance

Cooling Capacity: 12 kW | Heating Capacity: 24–30 kW (optional) | EER: 2.0 | Weight: 110 kg ± 4 kg | Dimensions: 1,370(L) * 1,030(W) * 285(H) mm

Electrical Specifications:

• High Voltage: DC 400V – DC 750V
• Low Voltage: DC 18V – DC 32V

Key Features:

• Maximum cooling capacity in the lineup
• 5C ultra-fast charging compatible
• Intelligent pre-cooling and pre-heating
• Highest heating capacity option (30 kW) for extreme cold
• Mounting: Φ12 holes * 8
• Full integration with NEWBASE's MPC and digital twin platform

Ideal For: Battery-swap heavy trucks, mining dump trucks, and other high-intensity applications where maximum thermal management performance is non-negotiable.

Quick Selection Guide

Common Features Across All Models

Every NEWBASE BTMS water-cooled unit includes:

• IPX7 protection rating (dust-tight, 1m water immersion for 72 hours)
• CAN2.0 communication protocol
• Self-diagnostic fault detection
• Real-time power information upload
• EMC Level III compliance
• Configurable PTC liquid heater
• Standby, cooling, heating, and self-circulating operating modes
• 50% ethylene glycol aqueous solution as secondary refrigerant
• Custom connector configurations available

Request a Quote

Ready to specify the right BTMS for your electric commercial vehicle? Contact NEWBASE's technical team for detailed specifications, prototype samples, and customized solutions.