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There are a large number of temperature sensors distributed in the battery module, so many factors need to be considered here, especially several major considerations.
(1) Cost
(2) Accuracy (the entire measurement error is within +/-2 °): In the entire range, the characteristics need to meet the entire parameter range.
(3) Temperature range (-40℃ to 125℃)
(4) Fast thermal response: here means that the time to reach the closest temperature should be as short as possible
(5) Within a certain range of self-heating, the value of resistance needs to consider its own heating, so as not to cause heating by itself. The main choices in the parameter layer are: resistance value, B constant, heat dissipation constant, rated electric power, heat Constant time.
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