Heat-sensitive sensor

A thermal sensor and sensor technology, applied in the field of sensors, can solve the problems of occupying volume, unfavorable efficient combination of batteries, easy to fall off, etc.

CN111811669AActive Publication Date: 2020-10-23上海祎久科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2020-10-23

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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.
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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...

Examples

Embodiment approach

[0022]As an embodiment of the present invention, the bottom of the No. 1 hole 12 is provided with a chute 17 perpendicular to the No. 2 hole 16, and a slider 18 is slidably connected to the chute 17. The slider 18 is close to the bottom of the chute 17. One end is arranged in a wedge shape, and the slider 18 is pressed against the elastic rod 14 to further increase the fit between the probe 15 and the battery cell and increase the detection accuracy of the sensor; when the sensor body 13 is inserted into the No. 1 hole 12, the sensor body 13 drives the elastic The rod 14 and the probe 15 slide down, so that the probe 15 slides down and is embedded in the second hole 16, so that the probe 15 is in contact with the outer wall of the cell clamped in the arc-shaped groove 11, so as to detect the real-time temperature of the cell normally. At the same time, due to the elastic force of the elastic rod 14, the probe 15 is close to the outer wall of the cell, but when the elastic rod 1...