Temperature sensing device of storage battery and manufacture method thereof

Abstract

The invention relates to a temperature sensing device of a storage battery, which is characterized by comprising a shell (3), a sealing cover (4), a lead (5) and a sensing chip (1); the sensing chip (1) is located at the bottom of the shell (3), the upper end of the sensing chip (1) is provided with a chip pin, and the chip pin and the lead (5) form a welding part (2) of the chip pin and the lead in a welding manner; one part of the lead (5) passes through the temperature sensing device, and the part passing through the temperature sensing device is provided with a shrinkable tube (7); and the shell (3) is internally provided with an encapsulating material (6). The temperature sensing device solves the problem of low accuracy of the current temperature sensing device of the storage battery, and can be widely used in temperature test for acid containing liquid, wherein a temperature test range is from -55 DEG C to +125 DEG C; and in addition, the digital temperature sensing device needs no signal processing circuit, and the output signals can be shared by a plurality of control devices.

Description

technical field [0001] The present invention relates to a device and its preparation, in particular to a temperature-sensing device and its preparation. Background technique [0002] In order to improve the power receiving capacity of the battery at low temperature, automatically heat the battery at low temperature, and realize the automatic control of battery heating, the temperature sensing device suitable for working in acid liquid was only developed in China in the 1980s. The temperature sensing device adopts Bimetal package, the working principle of the bimetal, when the temperature drops to the design value of the connection, the bimetal is closed; when the temperature rises to the design value of the disconnection, the bimetal is disconnected; the accuracy of the bimetal It all depends on the ratio of different metal materials in the manufacturing process of the bimetal. The temperature-sensing device packaged by a bimetal sheet is prone to problems such as metal agi...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a storage battery temperature sensing device for the above defects in the prior art, which solves the problem of low control accuracy of the current storage battery temperature sensing device, and can be widely used in the temperature test of acidic liquids. The temperature measurement range: -55°C~+125°C, at the same time, the digital temperature sensing device does not need a signal processing circuit, and the output signal can be shared by multiple control devices

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