CN217403682U

CN217403682U - Pressure detection sensor

Info

Publication number: CN217403682U
Application number: CN202221106887.9U
Authority: CN
Inventors: 李明伦; 鞠光才; 时晓彤
Original assignee: Yantai Chungway New Energy Technology Co Ltd
Current assignee: Yantai Chungway New Energy Technology Co Ltd
Priority date: 2022-05-10
Filing date: 2022-05-10
Publication date: 2022-09-09
Anticipated expiration: 2032-05-10

Abstract

The utility model discloses a pressure detection sensor, including upper cover, lower cover and detection circuit board, upper cover and lower cover set up the detection circuit board between upper cover and lower cover at vertical direction parallel arrangement, at its characterized in that: the pressure detection cabin is arranged on the lower cover, the detection circuit board is electrically connected with the air pressure sensor, the air inlet is formed in the lower cover, and the air inlet is communicated with the pressure detection cabin. Has the advantages that: the stability is improved by designing the pressure detection cabin; the sensitivity and the precision of the pressure detection sensor are improved through the detection of the independent pressure detection cavity.

Description

Pressure detection sensor

Technical Field

The utility model relates to a pressure detection sensor technical field, concretely relates to pressure detection sensor.

Background

With the rapid increase of the reserve of new energy electric vehicles, fire accidents of the electric vehicles attract close attention of people, and under various abuse conditions of overheating, overcharge, overdischarge, impact, extrusion, internal and external short circuit and the like of lithium batteries, various materials in the batteries are subjected to chemical reaction to cause thermal runaway of the batteries, and finally safety accidents such as ignition or explosion of the electric vehicles are induced. Pressure fluctuation can appear in the early stage of thermal runaway of the lithium battery, and the pressure sensor is arranged, so that early warning can be performed in the early stage of thermal runaway of the lithium battery, the probability of fire hazard is reduced, and the system has important significance for safe and efficient operation of the system.

The conventional pressure sensor at present has poor reliability and generally has some defects:

1) the air pressure fluctuation of the environment is large, and false alarm is easy to generate;

2) the pressure detection precision is low, and the sensitivity is not high;

the above problems limit the use conditions and the use occasions of the pressure sensor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a pressure detection sensor, which improves the stability by designing a pressure detection cabin; the sensitivity and the precision of the pressure detection sensor are improved through the detection of the independent pressure detection cavity.

The purpose of the utility model is achieved through the following technical measures: the utility model provides a pressure detection sensor, includes upper cover, lower cover and detection circuit board, upper cover and lower cover set up detection circuit board in vertical direction parallel arrangement between upper cover and lower cover, are provided with a pressure detection cabin on the lower cover, and electricity connection baroceptor is covered under to the detection circuit board, is equipped with the air intake under, air intake and pressure detection cabin intercommunication.

Furthermore, the pressure detection cabin forms a closed pressure detection cavity under the enclosing of the detection circuit board, and the air pressure sensor is arranged in the pressure detection cavity.

Further, the detection circuit board is fixed on the lower cover through screws.

Furthermore, the probe circuit board is provided with a contact pin, one end of the lower cover extends out of a contact pin fixing groove, one end of the upper cover vertically extends out of a contact pin fixing rib, and the contact pin is inserted into the contact pin fixing groove and fixed by the contact pin fixing rib.

Furthermore, the other end of the lower cover is provided with a mounting groove, the mounting groove is convenient for inserting a contact pin into the through cavity, a dovetail shell vertically extends out of the other end of the upper cover, and the dovetail shell is used for sealing the mounting groove.

Further, the upper cover is clamped with the lower cover.

Furthermore, installation positioning holes are respectively formed in two sides of the lower cover, and insert copper sleeves are connected in the installation positioning holes.

Compared with the prior art, the beneficial effects of the utility model are that: the pressure detection cabin is designed between the lower cover and the detection circuit board, so that the stability of pressure detection is improved; through the detection of the independent pressure detection cavity, the sensitivity and the precision of the pressure detection sensor are improved, and the influence of the outside air is avoided.

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Drawings

Fig. 1 is an exploded view of a pressure detecting sensor.

Fig. 2 is a plan view of a pressure detection sensor.

Fig. 3 is a cross-sectional view taken along a-a of fig. 2.

Fig. 4 is a cross-sectional view taken along B-B of fig. 3.

The test device comprises an upper cover 1, a lower cover 2, a detection circuit board 3, a pressure detection cabin 4, a screw 5, a contact pin 6, a contact pin fixing groove 7, a contact pin fixing rib 8, a mounting groove 9, a dovetail shell 10, a mounting positioning hole 11, an insert copper sleeve 12, a buckle 13 and a clamping groove 14.

Detailed Description

As shown in fig. 1 to 4, a pressure detection sensor comprises an upper cover 1, a lower cover 2 and a detection circuit board 3, wherein the upper cover 1 and the lower cover 2 are arranged in parallel in the vertical direction, the detection circuit board 3 is arranged between the upper cover 1 and the lower cover 2, the lower cover 2 is provided with a pressure detection chamber 4, the detection circuit board 3 is electrically connected with an air pressure sensor, the lower cover 2 is provided with an air inlet, and the air inlet is communicated with the pressure detection chamber 4. The lower cover 2 is of a hollow groove body structure. The hermetic seal here is not an absolute hermetic seal, but rather, in contrast to the pressure sensors of the prior art, a relatively independent closed air cavity is formed between the lower cover 2 and the detection circuit board 3, except for the air inlet. Air enters from the air inlet of the lower cover 2 and finally enters the pressure detection cabin 4, and in the pressure detection chamber, the pressure sensor detects pressure, so that the influence of outside air is avoided, and the sensitivity, the precision and the stability of the pressure detection sensor are improved. The detection circuit board 3 is of an integrated design. The detection circuit board 3 is also provided with some necessary components commonly used by pressure sensors. Still be equipped with a plurality of plug connectors between upper cover 1 and lower cover 2 after the joint, make things convenient for pressure detection sensor and outside to be connected. The pressure detection cabin 4 forms a closed pressure detection cavity under the enclosing of the detection circuit board 3, and the air pressure sensor is arranged in the pressure detection cavity.

The detection circuit board 3 is fixed on the lower cover 2 through screws 5.

The probe circuit board 3 is provided with a pin 6, one end of the lower cover 2 extends to form a pin fixing groove 7, one end of the upper cover 1 extends to form a pin fixing rib 8, and the pin 6 is inserted into the pin fixing groove 7 and fixed by the pin fixing rib 8.

The other end of the lower cover 2 is provided with a mounting groove 9, the mounting groove 9 is convenient for the insertion of the contact pin 6 into the contact pin fixing groove 7, the other end of the upper cover 1 vertically extends to form a dovetail shell 10, and the dovetail shell 10 is used for sealing the mounting groove 9. When needs installation, will survey circuit board 3 and put into the hollow groove body structure of lower cover 2, utilize the yielding space that the 9 breachs of mounting groove formed, with in the smooth male contact pin fixed slot 7 of contact pin 6, and insert to target in place, then with

upper cover

1 and 2 buckle 13 locks of lower cover, contact pin fixed muscle 8 after the lock is pressed on contact pin 6 to fixed contact pin 6.

The upper cover 1 is clamped with the lower cover 2. Be equipped with a plurality of buckles 13 on upper cover 1, be equipped with a plurality of draw-in grooves 14 under lower cover 2, buckle 13 uses with draw-in groove 14 cooperation.

And mounting positioning holes 11 are respectively formed in two sides of the lower cover 2, and insert copper sleeves 12 are connected in the mounting positioning holes 11. The pressure detection sensor is fixedly connected with the battery box through an insert copper sleeve 12.

In the description of the present invention, it is to be understood that the terms "upper", "middle", "outer", "inner", and the like, indicate positional or positional relationships, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.

Claims

1. The utility model provides a pressure detection sensor, includes upper cover, lower cover and detection circuit board, upper cover and lower cover set up detection circuit board, its characterized in that between upper cover and lower cover at vertical direction parallel arrangement: the pressure detection cabin is arranged on the lower cover, the air pressure sensor is electrically connected on the detection circuit board, the air inlet is arranged on the lower cover, and the air inlet is communicated with the pressure detection cabin.

2. The pressure detection sensor according to claim 1, characterized in that: the pressure detection cabin forms a closed pressure detection cavity under the enclosing of the detection circuit board, and the air pressure sensor is arranged in the pressure detection cavity.

3. The pressure detection sensor according to claim 1, characterized in that: the detection circuit board is fixed on the lower cover through screws.

4. The pressure detection sensor according to claim 1, wherein: the probe circuit board is provided with a contact pin, one end of the lower cover is extended with a contact pin fixing groove, one end of the upper cover is vertically extended with a contact pin fixing rib, and the contact pin is inserted into the contact pin fixing groove and fixed by the contact pin fixing rib.

5. The pressure detection sensor according to claim 4, wherein: the other end of the lower cover is provided with a mounting groove, the mounting groove is convenient for inserting a contact pin into the through cavity, a dovetail shell vertically extends out of the other end of the upper cover, and the dovetail shell is used for sealing the mounting groove.

6. The pressure detection sensor according to claim 1, characterized in that: the upper cover is clamped with the lower cover.

7. The pressure detection sensor according to claim 1, characterized in that: and mounting positioning holes are respectively formed in the two sides of the lower cover, and insert copper sleeves are connected in the mounting positioning holes.