Chứng nhận nhiệt điện trở chất lượng cao

Why Thermistors are Critical to EV Battery Safety?

May 27, 2025

As electric vehicles (EVs) continue to evolve, battery safety has become a defining factor in both performance and consumer trust. With high voltages, fast charging, and demanding thermal environments, temperature monitoring inside EV battery packs is no longer optional — it's mission-critical.

 

Thermistors inside the battery pack. NTC thermistors are embedded at multiple points inside the battery module. Their role is to:

  • Detect localized heating at the cell level.
  • Provide real-time thermal feedback to the Battery Management System (BMS).
  • Trigger cooling, derating, or system shutdown when overheating is detected.

This continuous temperature monitoring helps maintain the battery within its safe operating range (typically 20–60°C), which is essential for cycle life, charging efficiency, and safety.

 

EV battery thermistor

Why thermistor performance matters? Unlike general-purpose sensors, EV-grade thermistors must meet rigorous requirements:

  • Fast response to sudden heat rise (low thermal time constant).
  • Tight tolerance (±1% or better) for accurate feedback to BMS.
  • AEC-Q200 compliance for automotive reliability.
  • Custom packaging for integration into prismatic, pouch, or cylindrical cell formats.

 

Failure to Sense = Failure to Protect. When thermal sensors are absent or underperforming, battery packs become vulnerable to thermal imbalance — where one overheating cell can cascade into others, leading to swelling, fire, or explosion. This is exactly why OEMs and Tier 1 suppliers now require component-level AEC-Q200 certification and proven production traceability.


In EV battery systems, thermistors are not optional extras — they are the eyes of the BMS. Without accurate, fast, and reliable thermal sensing, even the best-engineered battery packs risk failure.

 

BMS temperature sensor

At Shiheng Electronics, we provide automotive-grade NTC thermistors with customization, fast delivery, and 20+ years of manufacturing expertise. If you’re building EVs, we’re ready to help you build them safer.

 

Request a sample or contact our technical team to get started.

Tùy chỉnh

Shiheng đã tập trung vào R&D và sản xuất nhiệt điện trở trong 22 năm, tập trung vào việc tùy chỉnh chúng cho bạn.
YÊU CẦU BÁO GIÁ

Cần giúp đỡ? Trò chuyện với chúng tôi

để lại lời nhắn
Nếu bạn quan tâm đến sản phẩm của chúng tôi và muốn biết thêm chi tiết, vui lòng để lại tin nhắn tại đây, chúng tôi sẽ trả lời bạn ngay khi có thể.
nộp
Tìm kiếm liên hệ
LIÊN HỆ CHÚNG TÔI #
+8615150650428

Giờ của chúng tôi

Thứ Hai - Thứ Sáu: 8 giờ sáng - 5 giờ 30 chiều

(tất cả các giờ đều là Giờ miền Đông)

TRANG CHỦ

CÁC SẢN PHẨM

WhatsApp

liên hệ