CN209069250U - A kind of measured material - Google Patents

Abstract

The utility model provides a kind of measured material, belongs to measuring appliance technical field.It solves the problems, such as that existing battery core measurement error is big.This measured material includes holder and folder lid, holder and folder Gai Xianglian, the bearing plate for placing battery core is equipped between holder and folder lid, several pressure sensors for being used to measure the battery core coefficient of expansion are equipped between bearing plate and holder, each pressure sensor bottom is embedded in holder, is embedded in bearing plate at the top of each pressure sensor.This measured material has the advantages that improve battery core measurement accuracy.

Description

A kind of measured material

Technical field

The utility model belongs to measuring appliance technical field, is related to a kind of measured material.

Background technique

Core energy source of the battery pack as electric car, and battery core is the core component of battery pack.The prior art In battery core there is different degrees of expansion after a period of use, on the one hand due in battery core charge and discharge process, in battery core Portion can chemically react, and leading to battery core, there are the different coefficients of expansion, on the other hand, due to temperature liter in the battery core course of work Height causes battery core to expand, and battery core expansion will lead to battery modules failure even battery core rupture, and then causes security risk, because This battery core manufacturer needs to detect battery core performance so that battery core meets production requirement, and sets for further battery mould group Meter provides test data.

Cell production companies are used to detect the fixture of battery core in the prior art, such as Chinese patent literature data discloses electricity The core thickness measure fixture [patent No.: 201220431576.X；Application publication number: CN202793261U], cell thickness measurement Fixture is for measuring cell thickness of the battery core under a certain state.

The battery core thickness measure fixture can be used in measuring the thickness of battery core.The battery core thickness measure fixture can not be examined in real time Expansion status of the battery core in charge and discharge process is surveyed, but battery core is measured before battery core charging or after charging, and surveys It also needs to be adjusted fixture during amount, causes measurement error to be accumulated, and then cause battery core measurement error big.

Summary of the invention

The purpose of this utility model is to propose a kind of measured material for the above-mentioned problems in the prior art, is solved Certainly the technical issues of is the measurement accuracy for how improving battery core.

The purpose of this utility model can be realized by the following technical scheme: a kind of measured material, including holder and folder Lid, the holder and folder Gai Xianglian, which is characterized in that the bearing plate for placing battery core is equipped between the holder and folder lid, Several pressure sensors for being used to measure the battery core coefficient of expansion are equipped between the bearing plate and holder, each pressure passes Sensor bottom is embedded in holder, is embedded in bearing plate at the top of each pressure sensor.

The principle of this measured material is: when battery core detects, battery core being placed on bearing plate, is pressed from both sides battery core by fastener Tightly between holder and folder lid, then the pressure value on pressure sensor is reset, then battery core is charged and discharged, Battery core generated expansive force in entire charge and discharge process is finally recorded by pressure sensor.Pressure sensor part insertion In holder, pressure sensor part is embedded in bearing plate, this kind of structure expands battery core suffered by bearing plate Power can be by pressure sensor real-time detection, and then improves the measurement accuracy of this measured material, on the other hand makes pressure sensing Device positioning it is firm, and then bearing plate connect with holder it is firm, avoid pressure sensor position or bearing plate position generation Offset, to guarantee the measurement accuracy of pressure sensor.

In a kind of above-mentioned measured material, the bearing plate is in the projection where holder top surface in plane by holder top surface Covering, the bearing plate is in the institute's projection in the plane of folder base face by the covering of folder base face.When battery core installation after, holder and Folder lid avoids bearing plate run-off the straight due to unbalance stress so that clamping force suffered by bearing plate is uniform, reduces pressure sensing The error that device is generated by measuring appliance, and then improve the measurement accuracy of this measured material.

In a kind of above-mentioned measured material, the holder upper surface offers the guide groove for bearing plate insertion, described Guide groove slot bottom offers several for the mounting hole of pressure sensor bottom insertion, and the bearing plate lower surface offers several A location hole for being embedded at the top of pressure sensor.After measured material installation, pressure sensor bottom is embedded in mounting hole, It is embedded in location hole at the top of pressure sensor, so that the installation of pressure sensor is firm, the position of pressure sensor is avoided to send out Raw offset, meanwhile, when battery core expands, bearing plate is mobile towards holder under battery core expansion, is oriented to groove groove wall at this time The motion track for limiting bearing plate, avoids the position of bearing plate from shifting, and then improve the measurement accuracy of this measured material.

In a kind of above-mentioned measured material, each mounting hole bottom hole is smooth plane, and all peaces Dress hole bottom hole is respectively positioned on same level, and all pressure sensor bottoms bear against mounting hole bottom hole, each described fixed Position hole bottom hole is flat surface, and all location hole bottom holes are respectively positioned on same level, all pressure sensor tops Portion bears against location hole bottom hole.After pressure sensor installation, the placing height of all pressure sensors is consistent, and places Steadily, to reduce interference of the extraneous factor to pressure sensor, when battery core detection, pressure sensor is capable of detecting when battery core not With the coefficient of expansion on position, and then improve the measurement accuracy of this measured material.

In a kind of above-mentioned measured material, the mounting hole is uniformly provided on guide groove slot bottom, the bearing plate with There is gap between guide groove slot bottom.After pressure sensor installation, mounting hole makes pressure sensor be evenly distributed on holder On, gap avoids bearing plate from directly contacting with guide groove slot bottom, and then is supported by pressure sensor to bearing plate, so that holding The change in location pressure sensor of pressing plate can detect that when battery core detects, pressure sensor can detect electricity in time in time Core acts on the expansive force on bearing plate, and then improves the measurement accuracy of this measured material.

In a kind of above-mentioned measured material, the guide groove slot bottom is also provided with the conducting wire that one end is through to holder outer wall Slot and several and the one-to-one link slot of mounting hole, pass through corresponding connection between each mounting hole and metallic channel Slot is connected, and the pressure sensor has signal wire, and the signal wire is embedded in simultaneously in link slot and in metallic channel.By signal Line is embedded in the movement for avoiding signal wire to hinder bearing plate towards guide groove slot bottom in link slot and in guide groove simultaneously, and then avoids Signal wire is squeezed by bearing plate and signal output is caused to be obstructed, meanwhile, link slot avoids the bending of signal wire arrangement and leads to signal Output is obstructed, and then improves the measurement accuracy of this measured material.

In a kind of above-mentioned measured material, the bearing plate is made of metal material, and the bearing plate upper surface is flat Whole surface.Metal material makes bearing plate have feature resistant to high temperature, avoids bearing plate in the detection process because battery core distributes Heat out and deform, meanwhile, it is smooth in bearing plate upper surface that bearing plate places battery core, and then improves this measurement and press from both sides The measurement accuracy of tool.

Compared with prior art, a kind of measured material provided by the utility model has the advantage that

1, pressure sensor bottom is embedded in mounting hole, is embedded in location hole at the top of pressure sensor, so that pressure Sensor positioning is firm, avoids pressure sensor from shifting in the detection process, and avoid extraneous factor to pressure sensor Interference, meanwhile, all pressure sensors are stably placed on sustained height, so that all pressure sensors are measuring on an equal basis The coefficient of expansion on battery core different location is detected under environment, and then improves the measurement accuracy of this measured material.

2, there are gaps between guide groove slot bottom and bearing plate lower surface, so that bearing plate carries out weight by pressure sensor Support, when detection, the weight change that bearing plate is occurred can be detected in time by pressure sensor, meanwhile, it is oriented to groove groove wall The motion track of bearing plate is defined, avoids bearing plate because battery core expansion causes to deviate, to further increase this measurement The measurement accuracy of fixture.

Detailed description of the invention

Fig. 1 is the overall structure cross-sectional view of this measured material.

Fig. 2 is the top view of Fig. 1 holder.

In figure, 1, holder；11, guide groove；12, mounting hole；13, metallic channel；14, link slot；2, Jia Gai；3, bearing plate； 31, location hole；4, pressure sensor；41, signal wire.

Specific embodiment

It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further Description, but the utility model is not limited to these examples.

As shown in Figure 1, this measured material includes holder 1 and folder lid 2.

Holder 1 is connected with folder lid 2, equipped with bearing plate 3 for placing battery core between holder 1 and folder lid 2, bearing plate 3 by Metal material is made, and metal material makes bearing plate 3 have feature resistant to high temperature, avoids bearing plate 3 because in battery core detection process The heat that is given out and cause to deform, 3 upper surface of bearing plate is even curface, bearing plate 3 make battery core place it is smooth 3 upper surface of bearing plate, the bearing plate 31 top surface of holder projection in the plane covered by 1 top surface of holder, the pressure-bearing Plate 3 is covered in the institute's projection in the plane of folder 2 bottom surface of lid by 2 bottom surface of folder lid, after battery core installation, holder 1 and is pressed from both sides lid 2 and is made Clamping force suffered by bearing plate 3 is uniform, avoids run-off the straight due to unbalance stress of bearing plate 3, reduces pressure sensor 4 because surveying Measuring device tool and the error generated in the present embodiment, set that there are five for measuring the battery core coefficient of expansion between bearing plate 3 and holder 1 Pressure sensor 4, as shown in Fig. 2, 1 upper surface of holder offer for bearing plate 3 be embedded in guide groove 11,11 slot bottom of guide groove It opens up there are five the mounting hole 12 for the insertion of 4 bottom of pressure sensor, 3 lower surface of bearing plate is opened up there are five for pressure sensor The location hole 31 that 4 tops are embedded in, after all pressure sensors 4 are installed, in actual production, the quantity of pressure sensor 4 can be Three or seven, the quantity of mounting hole 12 and the quantity of location hole 31 are equal with the quantity of pressure sensor 4, and install Hole 12 open up position and location hole 31 open up that position is corresponding, and each 4 bottom of pressure sensor is embedded in holder 1, often It is embedded in bearing plate 3 at the top of a pressure sensor 4, so that the installation of pressure sensor 4 is firm, avoids pressure sensor 4 Position shift, meanwhile, mounting hole 12 is uniformly provided on 11 slot bottom of guide groove, so that pressure sensor 4 is uniformly distributed On holder 1, there is gap, gap avoids bearing plate 3 and 11 slot bottom of guide groove direct between 11 slot bottom of bearing plate 3 and guide groove Contact, and then bearing plate 3 is supported by pressure sensor 4, pressure sensor 4 places bearing plate 3 steadily, works as battery core When expanding, bearing plate 3 is mobile towards holder 1 under battery core expansion, and 11 cell wall of guide groove limits the shifting of bearing plate 3 at this time Dynamic rail mark avoids the position of bearing plate 3 from shifting, and further avoids pressure sensor 4 and shifts, each 12 hole of mounting hole Bottom is smooth plane, and 12 bottom hole of all mounting holes is respectively positioned on same level, and all 4 bottoms of pressure sensor are supported respectively By 12 bottom hole of mounting hole, each 31 bottom hole of location hole is flat surface, and all 31 bottom holes of location hole are respectively positioned on same level, 31 bottom hole of location hole is born against at the top of all pressure sensors 4, mounting hole 12 and location hole 31 make all pressure sensings The placing height of device 4 is identical, and pressure sensor 4 is placed steadily, and pressure sensor 4 is avoided to shake, when battery core detection, Pressure sensor 4 is capable of detecting when the coefficient of expansion on battery core different location.

11 slot bottom of guide groove is also provided with the metallic channel 13 and several and mounting hole 12 that one end is through to 1 outer wall of holder One-to-one link slot 14, is connected between each mounting hole 12 and metallic channel 13 by corresponding link slot 14, is pressed Force snesor 4 has signal wire 41, and signal wire 41 is embedded in simultaneously in link slot 14 and in metallic channel 13, to avoid signal wire 41 It hinders bearing plate 3 towards the movement of 11 slot bottom of guide groove, and avoids so that the signal feedback of signal wire 41 is hindered, and then is improved The measurement accuracy of this measured material.

When measured material is installed, by the bottom mounting apertures 12 of all pressure sensors 4, top is embedded in location hole 31, and will 41 insertion wire slot 13 of signal wire, bearing plate 3 are embedded in guide groove 11, will finally be consolidated between folder lid 2 and holder 1 by fastener Even.When battery core detects, the distance between bearing plate 3 and folder lid 2 are adjusted, battery core is placed on 3 upper surface of bearing plate, then folder is covered Fastener between 2 and holder 1 is respectively adopted rated moment and tightens, then that the pressure on sensor signal output software is clear Zero, finally battery core is charged and discharged, battery core institute in entire charge and discharge process can be recorded by pressure sensor 4 The expansive force of generation, and then improve the measurement accuracy of this measured material.

The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.

Although holder 1 is used more herein, guide groove 11, mounting hole 12, metallic channel 13, folder lid 2, bearing plate 3, determines The terms such as position hole 31, pressure sensor 4, signal wire 41, but it does not exclude the possibility of using other terms.Use these terms Just for the sake of being more convenient to describe and explain the essence of the utility model；It is construed as any additional limitation all It is contrary to the spirit of the present invention.

Claims (7)

1. a kind of measured material, including holder (1) and folder lid (2), the holder (1) are connected with folder lid (2), feature exists It is equipped with the bearing plate (3) for placing battery core between, the holder (1) and folder lid (2), the bearing plate (3) and holder (1) Between be equipped with several and be used to measure the pressure sensor (4) of the battery core coefficient of expansion, each pressure sensor (4) bottom is equal It is embedded in holder (1), is embedded in bearing plate (3) at the top of each pressure sensor (4).

2. a kind of measured material according to claim 1, which is characterized in that the bearing plate (3) is in holder (1) top surface institute Projection in the plane is covered by holder (1) top surface, the bearing plate (3) Jia Gai (2) bottom surface projection quilt in the plane (2) the bottom surface covering of folder lid.

3. a kind of measured material according to claim 2, which is characterized in that holder (1) upper surface is offered for holding The guide groove (11) of pressing plate (3) insertion, guide groove (11) slot bottom offer several and are embedded in for pressure sensor (4) bottom Mounting hole (12), bearing plate (3) lower surface offers several for the location hole that is embedded at the top of pressure sensor (4) (31)。

4. a kind of measured material according to claim 3, which is characterized in that each mounting hole (12) bottom hole is flat Whole plane, and all mounting holes (12) bottom hole is respectively positioned on same level, all pressure sensor (4) bottoms point Not against mounting hole (12) bottom hole, each location hole (31) bottom hole is flat surface, all location hole (31) holes Bottom is respectively positioned on same level, bears against location hole (31) bottom hole at the top of all pressure sensors (4).

5. a kind of measured material according to claim 4, which is characterized in that the mounting hole (12) is uniformly provided with guiding On slot (11) slot bottom, there is gap between the bearing plate (3) and guide groove (11) slot bottom.

6. a kind of measured material according to claim 3 or 4 or 5, which is characterized in that guide groove (11) slot bottom is also opened The metallic channel (13) and several and mounting hole (12) one-to-one link slot of holder (1) outer wall are through to equipped with one end (14), it is connected between each mounting hole (12) and metallic channel (13) by corresponding link slot (14), the pressure passes Sensor (4) has signal wire (41), and the signal wire (41) is embedded in simultaneously in link slot (14) and in metallic channel (13).

7. a kind of measured material described according to claim 1 or 2 or 3 or 4 or 5, which is characterized in that the bearing plate (3) by Metal material is made, and bearing plate (3) upper surface is even curface.