The X-meritan NTC Thermistor for Battery Pack is a highly sensitive, automotive-grade temperature measurement sensor specifically designed for lithium-ion battery modules, energy storage systems (ESS), and industrial battery management architectures (BMS). engineered to prevent thermal runaway and optimize battery charging efficiency, this compact thermistor delivers fast, precise temperature feedback directly from cell and module surfaces.
The NTC Thermistor for Battery Pack detects temperature changes through the negative temperature coefficient of its sensing material. As temperature increases, electrical resistance decreases, allowing the connected monitoring circuit to identify changes in battery temperature.
Different battery management systems use different resistance-temperature curves. X-Meritan provides commonly used R25 values such as 10KΩ, 47KΩ, and 100KΩ, together with B-values including 3435K, 3950K, and 4100K. Custom resistance and B-value specifications can be supplied according to the required R-T curve.
The sensing element can be packaged in configurations suitable for installation on or near battery cells and modules. Compact dimensions help place the temperature sensor close to the monitored heat source without occupying significant space within the battery assembly.
Lead length, housing configuration, connector arrangement, and other mechanical characteristics can be customized for different battery pack structures. This allows the sensor assembly to match the available installation position and electrical interface.
The specified operating temperature range of -40°C to +125°C covers a broad range of battery operating conditions. The selected package and sensing configuration should be matched to the actual temperature exposure of the application.
The insulation resistance between the lead wire and housing is greater than 100MΩ. This provides electrical isolation between the sensing circuit and the surrounding mechanical structure when the sensor is properly installed.
|
Parameter |
Description / Value |
|
R25 Nominal Resistance |
Common specifications include 10KΩ, 47KΩ, 100KΩ, etc. Customization available upon request. |
|
B-Value |
Common specifications include 3435K, 3950K, 4100K, etc. This determines the sensitivity of resistance change with temperature. |
|
Operating Temperature Range |
-40℃ ~ +125℃, meeting the operational environmental requirements of most battery packs. |
|
Tolerance |
Multiple grades available, such as ±1%, ±3%. |
|
Thermal Time Constant |
In still air, the typical value is less than 10 seconds, ensuring a fast response. |
|
Insulation Resistance |
Insulation resistance between the lead wire and the housing is greater than 100MΩ, ensuring electrical safety. |
The sensor installation method affects how quickly and accurately the sensing element responds to battery temperature changes.
For cell-level monitoring, the NTC Thermistor for Battery Pack can be positioned directly against the cell surface to measure the temperature near the monitored cell. For module-level monitoring, it can be placed at a representative location within the module structure.
1.Contact between sensing element and monitored surface
2.Sensor position relative to heat-generating cells
3.Lead routing and strain relief
4.Electrical insulation
5.Available installation clearance
6.Connector orientation
7.Housing dimensions
8.Fixing or adhesive method
Selecting the appropriate NTC Thermistor for Battery Pack requires matching its electrical characteristics with the BMS temperature-measurement circuit and its mechanical characteristics with the battery pack.
The nominal resistance at 25°C must match the resistance range expected by the BMS or charging circuit. Common values include 10KΩ, 47KΩ, and 100KΩ.
The B-value determines how the thermistor's resistance changes as temperature changes. The selected B-value should correspond to the R-T curve required by the temperature-measurement algorithm.
Tolerance affects the difference between the actual thermistor characteristics and the nominal R-T curve. Tighter tolerances can be considered when the application requires more consistent temperature measurement between sensors.
The sensor's rated temperature range should cover the minimum and maximum temperature expected at its installation position.
The thermal time constant indicates how quickly the sensor responds to a change in its surrounding temperature. Applications involving rapid thermal changes should consider sensor mass, mounting method, contact conditions, and airflow when evaluating response time.
Lead length, housing size, connector type, and mounting method should be specified according to the available battery-pack space and BMS wiring structure.
X-Meritan can configure the NTC Thermistor for Battery Pack assembly according to the electrical and mechanical requirements of the battery system.
Available customization areas include:R25 resistance, B-value, Resistance tolerance, B-value tolerance, Lead-wire length, Wire specification, Housing structure, Sensor dimensions, Connector configuration, Mounting method and Packaging requirements.
For custom development, the battery manufacturer can provide the required temperature range, BMS input specification, R-T curve, installation location, available space, cable requirements, and connector configuration.
X-Meritan provides TEC modules, temperature controllers, thermistors, and related thermal components, helping customers select compatible products for different temperature-control requirements.
We support customization of electrical parameters, dimensions, packaging structures, and connection methods to match different equipment designs and installation conditions.
Through controlled manufacturing and performance testing, X-Meritan maintains consistency in key parameters such as electrical performance, thermal response, and sensing accuracy.
Our engineering team assists with component selection, parameter matching, and system integration to reduce development difficulties during product design.
X-Meritan supports sample testing, customized development, and volume production to meet different project stages and supply requirements.
It measures battery temperature by converting temperature changes into resistance changes. The BMS or charging circuit reads this resistance and converts it into a temperature value.
The R25 value should match the resistance input range and temperature-conversion curve of the BMS or charger. Common specifications include 10KΩ, 47KΩ, and 100KΩ.
The B-value describes the relationship between the thermistor's resistance and temperature. It is an important parameter for converting measured resistance into temperature.
Yes. X-Meritan can customize resistance, B-value, tolerance, lead length, housing, connector, and other mechanical configurations according to the battery design.
Yes. Multiple thermistors can be positioned at different cells or modules when the battery architecture requires temperature monitoring at multiple locations. The number and placement should be determined by the BMS and thermal design.
The specified operating temperature range is -40°C to +125°C. The actual allowable temperature should also be evaluated according to the selected package and installation configuration.
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Building C2, R&F Center, Shangpu Road, Taijiang District, Fuzhou City, Fujian Province, China
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