Heat-sensitive sensor

Abstract

The invention belongs to the technical field of sensors and particularly relates to a heat-sensitive sensor. The heat-sensitive sensor comprises a shell with an X-shaped section, arc-shaped grooves used for fixing a cylindrical battery cell are formed in two sides of the shell, a first hole is formed in the shell, a sensor body is arranged in the first hole, an end, close to the bottom of the first hole, of the sensor body is fixedly connected with a probe through an elastic rod, a second hole communicated with the arc-shaped groove is formed in the position, corresponding to the probe, in thefirst hole, and the probe makes contact with a surface of the battery cell after being inserted into the second hole. The heat-sensitive sensor is advantaged in that the cross section of the shell isX-shaped, when the special support is used as a fixing support of the sensor, adjacent battery cells are effectively isolated and fixed, the occupied volume of the special support is reduced, meanwhile, the adjacent battery cells are isolated, a good heat dissipation gap is kept, collision friction between the adjacent battery cells is reduced, and the service life of the battery cells is furtherprolonged.

Description

technical field [0001] The invention belongs to the technical field of sensors, in particular to a thermosensitive sensor. Background technique [0002] As a new type of clean and renewable secondary energy, lithium battery has the advantages of high working voltage, high energy density and light weight, and has been widely used in mobile phones, notebook computers, electric vehicles and other fields. Lithium-ion batteries are affected by Joule heat, reaction heat, and polarization heat during the discharge process. There will be a large amount of heat accumulation, which will increase the battery temperature, affect battery life and cycle efficiency, and cause serious explosions. In the event of a short circuit or overshoot inside, it may also cause an explosion due to excessive temperature. Therefore, it is necessary to effectively monitor the heat generation of lithium batteries to eliminate potential safety hazards. At present, the most direct and effective temperature...

AI Technical Summary

Problems solved by technology

[0005] In order to make up for the deficiencies of the existing technology, to solve the temperature detection of the battery cell in the prior art, the temperature sensor needs to be fixed on the outer wall of the battery cell for direct measurement, but the temperature sensor is usually fixed with the battery cell by bonding and a special bracket, and the bonding connection is It is easy to fall off during the vibration process, and the use of special buckles is easy to occupy too much volume, which is not conducive to the efficient combination of batteries and increases the volume of battery products. A thermal sensor proposed by the invention

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