Busbar Temperature Sensor · ESS Specialist

Reliable NTC Sensors for Energy Storage & BMS Systems

AEC-Q200 + UL/CE Certified busbar temperature sensors engineered for high-voltage ESS environments. Precision NTC thermistors with 3000V insulation, customizable harness, and proven reliability across 500MWh+ projects.

AEC-Q200 UL / TUV / CE 3000V Hi-pot Custom Harness IATF 16949
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150K/day

ESS Line Capacity

1000+

Global Customers

500MWh

Largest Project

Busbar Temperature Sensor for Energy Storage Systems

ESS Busbar NTC

Pure Nickel · 3000V

Temp Range

-40~150°C

10K/100K

Resistance

±0.5%

B-value

<50ms

Response

Dual Certification Standard

Certified for Cell-Level Accuracy and System-Level Safety

Every BeiDuoli busbar temperature sensor meets both automotive-grade reliability requirements and international electrical safety standards -- no compromise.

RELIABILITY CERT

AEC-Q200

Automotive Electronics Council Standard

Our NTC sensors pass AEC-Q200 qualification testing conducted by a CNAS-accredited third-party laboratory, ensuring long-term reliability in demanding ESS environments with temperature cycling, vibration, and humidity exposure.

Qualification Tests Passed

Thermal Shock -40~125°C
Humidity Resistance 85%RH
Vibration & Mechanical Shock
Resistance Stability 1000h
Solderability & Bond Strength
CNAS 3rd-Party Lab Report
Long-term Stability ±1% / 10yr
SAFETY CERT

UL · TUV · CE

International Electrical Safety Standards

BeiDuoli ESS sensors carry UL Listed, TUV Rheinland, and CE marking, satisfying North American, European, and global market entry requirements. Combined with RoHS and REACH compliance for environmental certification.

UL

Listed

TUV

Rheinland

CE

Marking

RoHS

Compliant

REACH

Compliant

CQC

Certified

Hi-pot Insulation (3000V DC) 100% Pass

Also holds:

ISO 9001:2015 IATF 16949:2016 ISO 14001:2015 AEC-Q200 (CNAS Lab) UL / TUV / CE / CQC

ESS Product Line

Energy Storage Dedicated NTC Temperature Sensors

Engineered specifically for ESS environments: high-voltage insulation, pure nickel contacts, and custom harness options for every battery architecture.

Temp Range: -40 ~ 150°C Resistance: 10K / 100K B-value: 3380 / 3435 / 3950 Custom Harness Length & Connector
ESS Busbar NTC Sensor with Pure Nickel Strip - 3000V High Voltage Insulation
BESTSELLER

ESS Busbar NTC

Pure Nickel Strip · High Voltage

Pure nickel contact strip with 3000V DC hi-pot insulation. Designed for direct busbar contact in battery modules, ensuring accurate thermal monitoring at high voltages.

Insulation 3000V DC
Response Time <50ms
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Multi-row Combination NTC Sensor for BMS Module - 4/6/8/12 PIN
BMS SPEC

Multi-row Combo NTC

BMS Module · 4/6/8/12 PIN

Multi-point temperature sensing for BMS mainboards. 4 to 12 PIN configurations with ±0.05mm pitch precision, supporting high-density layout in battery management systems.

Pin Options 4/6/8/12P
Pitch Accuracy ±0.05mm
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OT Ground Ring NTC Sensor M3-M6 for ESS Grounding Detection
GROUNDING

OT Ground Ring NTC

M3 · M4 · M5 · M6 Sizes

Ring terminal NTC for grounding point temperature detection. Available in M3-M6 bolt sizes, ideal for monitoring battery pack enclosure and busbar grounding points in ESS cabinets.

Bolt Sizes M3~M6
Accuracy ±0.3°C
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Plastic Tube NTC Sensor with High Insulation for ESS Applications
INSULATED

Plastic Tube NTC

High Insulation · Encapsulated

Fully encapsulated in insulating plastic tube for excellent electrical isolation. Suitable for liquid-cooled plate surface monitoring, inverter heat sink, and telecom backup battery applications.

Insulation Class Class B+
Operating Temp -40~150°C
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Can't find exactly what you need? We offer full customization.

Request Custom Specification

Where We're Used

Application Scenarios Across the ESS Value Chain

Used in commercial ESS, home battery, and telecom backup -- wherever precise busbar temperature monitoring determines system safety.

Battery cluster temperature monitoring with busbar NTC sensors in commercial ESS
Commercial ESS · 100kWh~100MWh

Battery Cluster Monitoring

Busbar NTC sensors mounted directly on cell-level busbars within battery clusters. Monitors heat distribution across parallel cell strings to prevent thermal runaway in large-format commercial ESS.

Pure Nickel Strip 3000V Insulation Real-time BMS Data
Battery module NTC sensor for cell-level temperature in ESS packs
Battery Pack · Cell-level Sensing

Battery Module Temperature

Multi-row combo NTC sensors embedded in battery module spacers for multi-point cell temperature mapping. Enables precise SOC/SOH calculation and balanced thermal management across the module.

Multi-point Sensing SOC/SOH Support 4~12 PIN Config
BMS mainboard NTC temperature sensor for battery management system
BMS · Home Battery · Telecom

BMS Mainboard Sensing

SMD and through-hole NTC sensors on BMS PCBs for ambient and component temperature feedback. Supports overtemperature protection logic in home battery and telecom backup systems.

SMD 0402~1206 Home Battery Telecom Backup
Liquid cooling plate NTC temperature sensor for ESS thermal management
Thermal Management · Cooling Loop

Liquid Cooling Plate Monitoring

Plastic tube NTC sensors affixed to liquid cooling plate inlet/outlet and surface points. Provides coolant temperature feedback to the thermal management controller, enabling precise flow rate adjustment.

Coolant Monitoring Inlet/Outlet Sensing Flow Control

Manufacturing Capability

ESS Dedicated Production Lines 150,000 Units / Day Capacity

8 dedicated ESS production lines with full automation -- from NTC chip welding to harness assembly and connector insertion -- ensuring consistent quality at scale.

ESS dedicated automated welding production line for NTC sensors
LINE 01~08

ESS Dedicated Welding Lines

8 fully automated ESS-specific welding lines with laser spot welding for pure nickel strip bonding. Zero-defect process with in-line visual inspection.

Daily Output 150K/day
Automatic NTC chip welding machine for ESS temperature sensors
PRECISION

Auto NTC Chip Welding

Fully automated chip pick-and-place welding with ±0.02mm positioning accuracy. Supports 0201~1206 NTC chip sizes with real-time resistance verification.

Weld Yield Rate 99.8%
Automatic terminal crimping and connector insertion for ESS NTC harness
HARNESS

Auto Terminal & Connector Insert

Automated wire cutting, terminal crimping, and connector housing insertion. Supports custom wire lengths from 50mm to 3000mm with various terminal and connector types.

Wire Length Range 50~3000mm

Total Manufacturing Scale

8

ESS Dedicated
Production Lines

200M+

Total Daily Capacity
All Lines

500+

Production
Employees

14Km²

Total Factory
Floor Area

Facilities: Shenzhen Bao'an (HQ) · Dongguan Dalingshan · Ganzhou Dingnan, Jiangxi | Sales: Suzhou (EV/ESS) · Ningbo · Fujian

Quality Assurance

In-house & 3rd-Party Testing CNAS-Accredited Lab Verification

Every ESS NTC sensor batch undergoes rigorous in-house screening plus independent third-party validation at our CNAS-accredited laboratory partners.

BeiDuoli in-house NTC sensor testing laboratory with CNAS accreditation

CNAS-Accredited 3rd Party Lab

AEC-Q200 Full Test Reports Available

All qualification testing reports are available upon request. Our internal lab performs 100% electrical screening; critical reliability tests are outsourced to CNAS-accredited labs for independent verification.

X-ray inspection and hi-pot testing equipment for NTC sensor quality control

X-Ray + Hi-pot Test Station

Internal structure inspection and 100% hi-pot screening on every ESS sensor batch

Test Capabilities

Hi-pot Insulation Test

3000V DC

100% production screening at 3000V DC for 1 minute. Verifies complete electrical isolation between NTC element and metallic busbar contact. Zero tolerance for insulation failure.

Damp Heat Cycling

85°C / 85%RH

1000-hour damp heat exposure per IEC 60068-2-78. Validates resistance drift and insulation integrity under prolonged humid conditions typical of outdoor ESS cabinets.

Thermal Shock Test

-40 ~ 125°C

500 cycles of rapid temperature transition per AEC-Q200 Rev-D. Tests mechanical integrity of wire bonds, encapsulation adhesion, and resistance stability under extreme thermal stress.

X-Ray Internal Inspection

100% Batch

X-ray imaging for internal wire bond quality, void detection in encapsulation, and NTC chip alignment verification. Catches hidden defects invisible to surface inspection before shipment.

Additional In-house Tests:

Pull force & wire bond Resistance & B-value 100% Vibration & shock test Salt spray corrosion Aging & life test EMI shielding check

Proven Track Record

Trusted by 50+ ESS Companies Including Projects up to 500MWh

From home battery startups to grid-scale ESS integrators -- BeiDuoli sensors protect critical energy infrastructure across China and globally.

50+

ESS Partner
Companies

500MWh

Largest Single
Project Scale

1000+

Total Customers
Worldwide

150M¥+

Annual Revenue
RMB

Commercial ESS Integrator, Shenzhen

100MWh Grid-scale Project · 2023

"BeiDuoli's pure nickel busbar NTC sensors passed our 3000V hi-pot requirement and AEC-Q200 verification on first submission. Zero field failures in 18 months of operation."

Home Battery Manufacturer, Ningbo

Residential ESS · 10Ah~30kWh · 2024

"Switched to BeiDuoli multi-row NTC combo sensors for our BMS board. The custom harness option saved us significant assembly time. Delivery in 15 days, quality consistent."

Telecom Backup Battery Supplier, Suzhou

48V Telecom ESS · Annual Volume 500K pcs

"We've been sourcing OT ground ring NTC from BeiDuoli for 3 years. Their IATF 16949 quality system gives us confidence for our tier-1 telecom customers. Competitive pricing and fast response."

ESS Industry Coverage -- China

China map showing BeiDuoli ESS customer locations in Shenzhen, Suzhou, and Ningbo

Proximity to ESS Industry Clusters

Shenzhen / Dongguan: China's largest ESS manufacturing hub -- BYD, CATL partners, 100+ ESS integrators within 50km radius

Suzhou / Ningbo: Major EV battery and commercial ESS cluster -- direct sales office for rapid customer support and technical consultation

Global Export: Serving ESS customers in Europe, North America, Southeast Asia via direct export -- CE/UL certified for market entry

Custom ESS NTC Inquiry

Request Custom ESS NTC

Tell us your application requirements. Our ESS engineering team will respond within 24 hours with a technical recommendation and competitive quote.

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WhatsApp

+86 158 8939 7634

Response Time

Within 24 hours

Free Sample

Available on request

BeiDuoli Technology · Shenzhen · IATF 16949 · AEC-Q200 · UL · TUV · CE · 2025