Battery pack and control method for a battery pack

By using a combination of PTC and NTC temperature measurement elements with different temperature change characteristics in the battery pack, the accuracy problem of battery cell overheat detection is solved, ensuring the reliability and safety of the battery management system.

CN115911621BActive Publication Date: 2026-07-24SAMSUNG SDI CO LTD
4 Cites 0 Cited by

Patent Information

Application Number
CN202210937258.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2021-08-05
Filing Date
2022-08-05
Publication Date
2026-07-24
Estimated Expiration
2042-08-05

AI Technical Summary

Technical Problem

Existing technologies struggle to accurately and completely detect overheating in battery cells, especially under high-power operating conditions, which may lead to misjudgments or missed detections.

Method used

The battery cell is overheated by using first and second type temperature measuring elements with different temperature-varying resistance characteristics, and by combining the output difference of the measuring circuit unit. This includes the parallel connection and redundancy design of positive temperature coefficient (PTC) and negative temperature coefficient (NTC) elements.

Benefits of technology

It enables accurate detection of battery cell overheating, avoiding false positives and false negatives, and improving the reliability and safety of the battery management system.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

A battery pack and a control method for the same are provided. The battery pack includes a battery cell and a measurement circuit unit configured to measure temperature information of the battery cell and including a first measurement circuit unit and a second measurement circuit unit, the first measurement circuit unit and the second measurement circuit unit including a first type temperature measurement element and a second type temperature measurement element having different resistance change characteristics according to temperature change, respectively, wherein the first measurement circuit unit and the second measurement circuit unit are on a common base substrate or on different separate base substrates. Accordingly, by mixing the first type temperature measurement element and the second type temperature measurement element having different resistance characteristics according to temperature change, false detection of overheating can be prevented and overheating can be detected without omission.
Need to check novelty before this filing date? Find Prior Art