CN213842475U - Pulling and pressing dual-purpose sensor - Google Patents

Abstract

The utility model relates to a draw and press dual-purpose sensor, it relates to the field that battery expansibility detected, comprising a base plate, bottom plate four corners department all is fixed with the sensor that is used for installing the foil gage, four the sensor top all is fixed with the pillar sleeve pipe, pillar sleeve pipe top and bottom plate bottom butt, be equipped with the locking piece that is used for restricting pillar sleeve pipe and bottom plate relative position on the bottom plate, the sensor lateral wall is equipped with the cable joint who is used for exporting the foil gage signal of telecommunication. The expansion of test battery circular telegram back, test battery inflation extrusion roof, roof atress back force transmission is to the roof all around, and four pillar sleeve pipes of roof four corners department transmit roof power all around four sensors, and four sensors receive the deformation volume from four pillar sleeve pipes respectively, reduce the possibility of sensor atress unbalance loading, and this application has the accurate effect of detection expansive force.

Description

Pulling and pressing dual-purpose sensor

Technical Field

The application relates to the field of battery expansive force detection, in particular to a pull-press dual-purpose sensor.

Background

The load cell measures the magnitude of the force through the response of the elastomer loading force. After the external force acts on the elastic body, the strain foil stuck on the elastic body deforms along with the external force to cause resistance change, and the resistance change enables the formed Wheatstone bridge to lose balance and output an electric quantity electric signal which changes in linear proportion to the external force.

The battery expansion force detection device with the notice number of CN209296198U comprises a first test board, a second test board, a third test board and a planar force cell sensor, wherein the first test board, the second test board and the third test board are arranged in a stacked mode, the planar force cell sensor is clamped between the first test board and the second test board and comprises a rectangular first bearing platform, transfer beams arranged at two ends of the first bearing platform and a second bearing platform connected with the transfer beams; the first bearing table, the transfer beam and the second bearing table are of an integrated structure; the first bearing table and the second bearing table are partially arranged in a staggered mode so that the transfer beam is arranged between the first bearing table and the second bearing table; the plane force cell sensor further comprises 4 strain gauges attached to the strain holes, a temperature compensation unit, a sensitivity compensation unit and a zero point compensation unit, wherein the temperature compensation unit, the sensitivity compensation unit and the zero point compensation unit are arranged in the first bearing table and integrated on the PCB, the strain gauges are electrically connected with the PCB through signal lines respectively, and an excitation power supply and signal output of the PCB are connected with an external cable through a PCB terminal. The test battery is placed between the second test board and the third test board, the test battery expands after being electrified, two sides of the second test board are stressed and then are transmitted to the transmission beam, the force of the transmission beam is transmitted to the planar force transducer, then the planar force transducer deforms, the strain gauge receives the deformation and outputs an electric signal, and the electric signal is output through the cable.

In view of the above-mentioned related technologies, when the inventor thinks that there is uneven condition in battery thickness, the sensor detects the plane force that the second tested the board transmission, and the second tested the board long limit both sides and kept away from the sensor, and then the sensor atress has the condition of unbalance loading, leads to the sensor output inaccurate, influences and detects the bulging force precision.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the sensor atress unbalance loading influences and detects the bulging force precision, this application provides a draw and press dual-purpose sensor.

The application provides a draw and press dual-purpose sensor adopts following technical scheme:

the utility model provides a draw and press dual-purpose sensor, includes the bottom plate, bottom plate four corners department all is fixed with the sensor that is used for installing the foil gage, four the sensor top all is fixed with the pillar sleeve pipe, pillar sleeve pipe top and bottom plate bottom butt, be equipped with the locking piece that is used for restricting pillar sleeve pipe and bottom plate relative position on the bottom plate, the sensor lateral wall is equipped with the cable joint who is used for exporting the foil gage signal of telecommunication.

Through adopting above-mentioned technical scheme, the inflation after the circular telegram of experimental battery, experimental battery inflation extrusion roof, roof atress back force transmission is to the roof all around, four pillar sleeve pipes of roof four corners department transmit four sensors with roof power all around, the dispersion is transmitted the pillar sleeve pipe at roof power all around, four sensors receive the deformation volume from four pillar sleeve pipes respectively, reduce the possibility that the sensor atress unbalance loading, and then reduce the condition of deformation volume loss and take place to the sensor detects the expansive force accurately.

Optionally, the top of each of the four sensors is fixed with a pressure bearing rod, and the four pressure bearing rods are in threaded connection with the support sleeve.

Through adopting above-mentioned technical scheme, through setting up the pressure-bearing rod, increase sensor and pillar sheathed tube area of contact, and then the sensor can receive bigger pulling force to the deformation volume scope that the sensor received is bigger, thereby has further improved the precision that the sensor detected the expansive force.

Optionally, a strain groove for mounting the strain gauge is formed in the bottom of the sensor, a strain beam is fixed on one side, away from the bottom plate, of the strain groove, and the side, away from the bottom plate, of the strain beam is fixedly connected with the pressure-bearing rod.

Through adopting above-mentioned technical scheme, through setting up the roof beam of meeting an emergency for pressure-bearing rod extrusion roof beam of meeting an emergency, the deformation volume behind the roof beam atress of meeting an emergency is bigger than the deformation in the sensor, and the scope that foil gage detected is bigger, and then detects the bulging force of battery more accurate.

Optionally, a sealing groove is formed in the notch of the strain groove, and a cover plate is inserted in the sealing groove.

Through adopting above-mentioned technical scheme, through setting up the apron for the circuit can be placed in inclosed space, and then reduces the possibility that internal line damaged after weing, thereby improves the life of sensor.

Optionally, four adjusting gaps for finely adjusting the height of the strut sleeve are formed in the outer peripheral surface of the strut sleeve.

Through adopting above-mentioned technical scheme, through seting up the adjustment clearance, can finely tune after the roof of being convenient for is fixed, and then roof and test battery contact part atress are even to reduce the test battery because of the possibility that the slight expansive force of bottom plate slope can not detect out, further improved the precision that detects.

Optionally, the locking piece includes that second bolts all wear to be equipped with in roof four corners department, four second bolts pass behind the roof and with pillar sleeve pipe inner peripheral surface threaded connection.

Through adopting above-mentioned technical scheme, through setting up the second bolt, be convenient for realize roof and pillar sheathed tube relative position fixed, reduce the roof possibility of rocking from top to bottom, reduce the condition of neglecting slight expansive force and take place, satisfy pillar sleeve pipe pivoted demand simultaneously.

Optionally, at least two first bolts penetrate through four corners of the bottom plate, and the first bolts penetrate through the bottom plate and then are in threaded connection with the sensor.

Through adopting above-mentioned technical scheme, through setting up first bolt for the sensor can be fixed at the bottom plate top, reduces the pillar sleeve pipe and rotates the pivoted possibility of drive sensor, reduces the sensor because of influencing the condition of sensor precision with the bottom plate friction.

Optionally, the outer peripheral surface of the sensor is provided with a threading hole for installing a cable connector, and the sensor is positioned in the threading hole and provided with a threaded hole for fixing the cable connector.

Through adopting above-mentioned technical scheme, through setting up the through wires hole for cable joint electric connection part can install in the through wires hole, reduces electric connection part and receives the possibility of damp damage, and then has improved cable joint's life. Through setting up the screw hole for cable joint is ageing or damage the convenient change in back, and the sensor can cyclic utilization, practices thrift the maintenance cost, satisfies the demand that cable joint fixed in the sensor simultaneously.

In summary, the present application includes at least one of the following beneficial technical effects:

the test battery expands to extrude the top plate, force is transmitted to the periphery of the top plate after the top plate is stressed, four support sleeves at four corners of the top plate transmit the force on the periphery of the top plate to the sensor, the sensor receives deformation from the support sleeves, and the possibility of stress unbalance loading of the sensor is reduced, so that the sensor can accurately detect expansion force;

through setting up the pressure-bearing rod, increase sensor and pillar sheathed tube area of contact, and then the deformation volume scope that the sensor received is bigger to the precision that the sensor detected the bulging force has further been improved.

Drawings

Fig. 1 is an overall structural operation diagram of the present embodiment.

Fig. 2 is an installation diagram of the overall structure of the present embodiment.

Fig. 3 is a schematic view of the sensor structure of the present embodiment.

Description of reference numerals: 1. a top plate; 11. a locking member; 111. a second bolt; 2. a base plate; 21. a first bolt; 3. a sensor; 31. a pressure-bearing rod; 32. a strain tank; 321. a sealing groove; 322. a cover plate; 33. a strain beam; 34. threading holes; 35. a threaded hole; 4. a strut casing; 41. adjusting the clearance; 5. the cells were tested.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses draw and press dual-purpose sensor. Referring to fig. 1 and 2, a draw and press dual-purpose sensor includes roof 1 and bottom plate 2, and 2 four corners departments of bottom plate all are equipped with sensor 3, and three first bolt 21 all wear to be equipped with in the four corners department of 2 bottoms of bottom plates, and a triangle-shaped is enclosed to three first bolt 21, and twelve first bolt 21 pass behind the bottom plate 2 with sensor 3 threaded connection. The top of each of the four sensors 3 is fixed with a pressure bearing rod 31, the outer periphery of each pressure bearing rod 31 is in a threaded shape, the outer periphery of each pressure bearing rod 31 is in threaded connection with a support sleeve 4, and the four support sleeves 4 are used for fixing the top plate 1, so that the contact area of the test battery 5 and the top plate 1 is uniform in stress. The peripheral surfaces of the four pillar sleeves 4 are all provided with adjusting gaps 41 for finely adjusting the height of the pillar sleeves 4. The bottom plate 2 and the sensor 3 are fixed through the three first bolts 21, the possibility that the sensor 3 rotates along with the rotation after the strut sleeve 4 rotates can be reduced, and the stability of the sensor 3 is improved. The four corners of the top plate 1 are all provided with second bolts 11 in a penetrating way, and the four second bolts 11 penetrate through the top plate 1 and then are in threaded connection with the inner peripheral surface of the pillar sleeve 4. Through setting up second bolt 11, be convenient for rotate pillar sleeve 4 and make roof 1 can be in horizontal position, satisfy the relative position of pillar sleeve 4 and roof 1 simultaneously and fix.

Referring to fig. 2 and 3, a strain groove 32 is formed at the bottom of the sensor 3, a strain beam 33 with a circular thin sheet is fixed on the side of the strain groove 32 away from the bottom plate 2, the side of the strain beam 33 away from the bottom plate 2 is fixedly connected with the pressure-bearing rod 31, and a strain gauge is fixed on the side of the strain beam 33 close to the bottom plate 2. Strain roof beam 33 is more weak than sensor 3 top relatively, and then strain roof beam 33 deformation volume is bigger, and the scope that foil gage detected is bigger, and then detects the bulging force of battery more accurate. A sealing groove 321 is formed in the notch of the strain groove 32, and a cover plate 322 for shielding rainwater is inserted in the sealing groove 321. The peripheral surface of the sensor 3 is provided with a threading hole 34 for installing a cable connector, and the sensor 3 is positioned in the threading hole 34 and provided with a threaded hole 35 for fixing the cable connector.

The implementation principle of the pull-press dual-purpose sensor in the embodiment of the application is as follows: the first bolt 21 is screwed, the sensor 3 is fixed at the four corners of the bottom plate 2, the support sleeve 4 is rotated to be installed on the outer peripheral surface of the pressure bearing rod 31, then the test battery 5 is placed in the center of the bottom plate 2, the top plate 1 is placed on the tops of the four support sleeves 4, and the second bolt 11 is screwed, so that the top plate 1 is in contact with the top surface of the test battery 5. The supporting column sleeve 4 is adjusted, the top plate 1 is in full contact with the test battery 5, the test battery 5 is electrified to expand, the test battery 5 extrudes the top plate 1, the top plate 1 is stressed and then moves towards the direction away from the bottom plate 2, the top plate 1 moves upwards to drive the supporting column sleeve 4 to move upwards, the supporting column sleeve 4 moves upwards to pull the pressure bearing rod 31 to move upwards, the pressure bearing rod 31 moves upwards to pull the strain beam 33, the strain beam 33 deforms, the strain sheet receives the deformation quantity generated by the strain beam 33, then the strain sheet converts the deformation quantity of the strain beam 33 into an electric signal, and the electric signal is conveyed out from the cable joint.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. A pull-press dual-purpose sensor comprises a bottom plate (2), and is characterized in that: bottom plate (2) four corners department all is fixed with sensor (3) that are used for installing the foil gage, four sensor (3) top all is fixed with pillar sleeve pipe (4), pillar sleeve pipe (4) top and bottom plate (2) bottom butt, be equipped with on bottom plate (2) and be used for restricting lock piece (11) of pillar sleeve pipe (4) and bottom plate (2) relative position, sensor (3) lateral wall is equipped with the cable joint who is used for exporting the foil gage signal of telecommunication.

2. The pull-press dual-purpose sensor of claim 1, wherein: and the top parts of the four sensors (3) are all fixed with pressure-bearing rods (31), and the four pressure-bearing rods (31) are in threaded connection with the strut sleeve (4).

3. The pull-push dual-purpose sensor according to claim 2, wherein: the sensor is characterized in that a strain groove (32) used for mounting a strain gauge is formed in the bottom of the sensor (3), a strain beam (33) is fixed on one side, away from the bottom plate (2), of the strain groove (32), and the strain beam (33) is fixedly connected with the pressure bearing rod (31) on one side, away from the bottom plate (2).

4. The pull-press dual-purpose sensor of claim 3, wherein: a sealing groove (321) is formed in the notch of the strain groove (32), and a cover plate (322) is inserted in the sealing groove (321).

5. The pull-push dual-purpose sensor according to claim 2, wherein: and adjusting gaps (41) used for finely adjusting the height of the strut sleeve (4) are formed in the peripheral surface of the four strut sleeves (4).

6. The pull-press dual-purpose sensor of claim 1, wherein: the locking piece (11) comprises at least two second bolts (111) which are arranged at four corners of the top plate (1) in a penetrating mode, and the four second bolts (111) penetrate through the top plate (1) and then are in threaded connection with the inner circumferential surface of the support sleeve (4).

7. The pull-press dual-purpose sensor of claim 1, wherein: first bolts (21) are arranged at four corners of the bottom plate (2) in a penetrating mode, and the first bolts (21) penetrate through the bottom plate (2) and then are in threaded connection with the sensor (3).

8. The pull-press dual-purpose sensor of claim 1, wherein: the cable joint is characterized in that a threading hole (34) for installing a cable joint is formed in the peripheral surface of the sensor (3), and a threaded hole (35) for fixing the cable joint is formed in the threading hole (34) of the sensor (3).

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