C h a p t e r 2 | V o l t a g e , C u r r e n t , a n d T e m p e r a t u r e M e a s u r e m e n t s
Key Points
• BMSs rely on shunt resistors for current sensing,
NTC thermistors for temperature sensing, and HV
resistors for voltage sensing.
• Shunt resistors are crucial for accurate SOC
measurements, requiring good linearity and low
TCR to maintain consistent performance across
varying conditions.
• NTC thermistors need high sensitivity and fast
response times for SOC and long-term stability
with low tolerance drift for SOH to ensure reliable
and accurate temperature readings.
• Key specifications for HV resistors include low
VCR, low TCR, and high ohmic values for handling
the high voltages typical in applications like EVs.
• Vishay provides customers with specialized
components for BMSs.
WSBE Power Metal Strip Shunt
Resistors
AEC-Q200-Qualified NTC SMD
Chip Thermistors
TNPV e3
Resistors
NTCLE317 NTC Thermistor with
Very Low Thermal Gradient
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13
8 Industry Experts Discuss Battery Management Solutions
