CN219978447U

CN219978447U - Electric checking fixture

Info

Publication number: CN219978447U
Application number: CN202320262748.3U
Authority: CN
Inventors: 吕立琨
Original assignee: Zigong Changying Precision Technology Co ltd; Shenzhen Everwin Precision Technology Co Ltd
Current assignee: Zigong Changying Precision Technology Co ltd; Shenzhen Everwin Precision Technology Co Ltd
Priority date: 2023-02-13
Filing date: 2023-02-13
Publication date: 2023-11-07
Anticipated expiration: 2033-02-13

Abstract

The utility model relates to the field of quality inspection of battery shells, and relates to an electric inspection jig which is used for detecting a power battery top cover plate provided with electrode plates and a top cover plate, wherein the electric inspection jig comprises a bottom plate, a lower die assembly arranged on the bottom plate and used for positioning the power battery top cover plate, an upper die assembly arranged above the power battery top cover plate, a supporting assembly used for supporting the upper die assembly, and an air cylinder used for driving the upper die assembly to move on the supporting assembly, the upper die assembly is provided with a probe plate arranged above the power battery top cover plate, the probe plate is provided with a plurality of probe holes and probes arranged in sequence, the probe holes are arranged corresponding to the electrode plates, the probes are simultaneously contacted with the electrode plates and the top cover plate when the upper die assembly moves to the power battery top cover plate, the electric inspection jig is connected with an automatic or semi-automatic working process through the probe to the inspection equipment, the accuracy of inspection data is ensured, and the working efficiency is improved.

Description

Electric checking fixture

Technical Field

The utility model relates to the field of battery shell quality inspection, in particular to an electric inspection jig.

Background

With the rapid development of new energy automobiles, the power battery is required to be rapidly increased as a power source of the new energy automobile, so that the power battery top cover plate is synchronously increased due to the requirement of the power battery. The power battery top cover is an important part of the power battery, the insulation between the power battery top cover and the battery core and the top cover is required to be measured, and the current common mode is a manual measurement mode.

Currently, the insulation property of insulating plastics is mainly checked by measuring the top cover plate and the riveting block of a power battery by using a universal meter manually in the industry; however, the manual measurement has low working efficiency, inaccurate measurement values and low stability, resulting in higher cost.

Disclosure of Invention

Aiming at the problems in the prior art, the utility model provides the accurate, stable and efficient electric detection jig.

In order to solve the technical problems, the utility model provides an electric detection jig for detecting a power battery top cover plate provided with an electrode plate and a top cover plate, which comprises a bottom plate, a lower die assembly arranged on the bottom plate and used for positioning the power battery top cover plate, an upper die assembly arranged above the power battery top cover plate, a support assembly used for supporting the upper die assembly, and an air cylinder driving the upper die assembly to move on the support assembly, wherein the upper die assembly is provided with a probe plate arranged above the power battery top cover plate, a plurality of probe holes which are sequentially arranged corresponding to the electrode plate and probes arranged in the probe holes are arranged on the probe plate, and the probes simultaneously contact with the electrode plate and the top cover plate when moving to the power battery top cover plate.

The probe holes are transversely arranged in two rows along the probe plate, and the number of the probe holes in each row is even.

The upper die assembly further comprises a connecting plate connected with the probe plate and a connecting block connected between the connecting plate and the air cylinder, a supporting arm is arranged on one side, facing the probe plate, of the connecting plate to be connected with the upper end of the probe plate, and a sliding end is arranged on one side, facing the supporting assembly, of the connecting plate.

The support assembly comprises a sliding rail plate connected with the connecting plate, support plates supported on two sides of the sliding rail plate, and a cylinder backing plate for supporting the cylinder.

The sliding rail plate is provided with a sliding rail corresponding to the sliding end, and the sliding rail plate is provided with a sliding groove corresponding to the connecting block.

The cylinder is provided with a guide column, one end of the guide column, which faces the connecting block, is provided with a connecting end, one end of the connecting block, which corresponds to the connecting end, is provided with a connecting bolt, and the connecting bolt is connected with the connecting end and can move in the guide column.

The first probe is arranged in the probe hole on the inner side, the second probe is arranged in the probe hole on the outer side, the first probe is contacted with the electrode plate, and the second probe is contacted with the top cover plate.

And the connecting block is also provided with a mounting hole, and an oil pressure buffer is arranged in the mounting hole.

The lower die assembly comprises a positioning block for supporting the top cover plate of the power battery, a limiting block which is arranged around the positioning block and clings to the top cover plate of the power battery, and a supporting block which is arranged below the positioning block.

The support arm comprises a vertical portion and a horizontal portion, the vertical portion is arranged on the connecting plate, and the probe plate is suspended below the horizontal portion.

The electric detection jig has the beneficial effects that: the electric detection jig comprises a bottom plate, a lower die assembly arranged on the bottom plate and used for positioning the power battery top cover plate, an upper die assembly arranged above the power battery top cover plate, a supporting assembly used for supporting the upper die assembly and a cylinder driving the upper die assembly to move on the supporting assembly, wherein the upper die assembly is provided with a probe plate arranged above the power battery top cover plate, the probe plate corresponds to the probe plate, a plurality of probe holes which are sequentially arranged are formed in the probe plate, probes are arranged on the probe plate and are in contact with the electrode plate and the power battery top cover plate when the upper die assembly moves to the power battery top cover plate, the electric detection jig realizes an automatic or semi-automatic working process through the probe connection detection equipment, the accuracy of detection data is guaranteed, and the working efficiency is improved.

Drawings

FIG. 1 is a schematic diagram of an electrical inspection tool according to the present utility model;

FIG. 2 is a schematic view of another angle of the electrical inspection tool according to the present utility model;

FIG. 3 is a schematic view of the top cover sheet of the power cell of the present utility model;

fig. 4 is a schematic structural diagram of an upper die assembly of the electrical inspection tool of the present utility model.

The attached drawings are identified:

1-a bottom plate; 2-a lower die assembly; 3-upper die assembly; 4-a support assembly; 5-cylinder; 6-a power battery top cover sheet; 61-electrode sheet; 62-top cover plate; 63-insulating plastic; 31-probe card; 311-probe holes; 312-probe; 32-connecting plates; 33-connecting blocks; 34-a support arm; 35-sliding end; 41-a slide rail plate; 42-supporting plates; 43-cylinder liner plate; 411-slide rail; 412-a sliding groove; 51-a guide post; 52-connecting end; 36-connecting bolts; 301-a first probe; 302-a second probe; 331-mounting holes; 7-an oil pressure buffer; 21-positioning blocks; 22-limiting blocks; 23-supporting blocks; 341-a vertical section; 342-horizontal portion.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Referring to fig. 3, the electric inspection jig is used for inspecting a top cover sheet 6 of a power battery provided with an electrode sheet 61, and the top cover sheet 6 of the power battery further comprises a top cover sheet 62 and insulating plastic 63 formed on the top cover sheet 62.

Referring to fig. 1 and 2, the electrical inspection fixture includes a bottom plate 1, a lower die assembly 2 disposed on the bottom plate 1 and used for positioning the top cover 6 of the power battery, an upper die assembly 3 disposed above the top cover 6 of the power battery, a support assembly 4 for supporting the upper die assembly, and a cylinder 5 driving the upper die assembly 3 to displace on the support assembly 4, wherein the upper die assembly 3 is sleeved on the cylinder 5 and realizes the up-down displacement through the cylinder 5, and the support assembly 4 is disposed on the bottom plate 1 and parallel to the lower die assembly 2 so that the upper die assembly 3 is disposed right above the top cover 6 of the power battery.

Referring to fig. 1, the lower die assembly 2 includes a positioning block 21 for supporting the power battery top cover 6, a limiting block 22 mounted around the positioning block 21 and closely attached to the power battery top cover 6, and a supporting block 23 disposed near the lower portion of the positioning block 21, where the limiting block 22 is disposed around the positioning block 21 and used for stabilizing the power battery top cover 6, so as to avoid the deviation when the upper die assembly 3 contacts with the power battery top cover 6, and it can be understood that the limiting block 22 is mainly in a square shape, and the length and the width of the positioning block 21 are both greater than those of the power battery top cover 6.

Referring to fig. 1 and 4, the upper module 3 includes a probe plate 31 corresponding to the upper side of the top cover 6 of the power battery, a connection plate 32 connecting the probe plate 31, and a connection block 33 connecting the connection plate 32 and the cylinder 5, wherein the probe plate 31 is provided with probe holes 311, the probe plate 31 is provided with a plurality of probes 312 sequentially arranged corresponding to the electrode plates 61, the probes 312 are installed in the probe holes 311, the probe holes 311 are transversely arranged in two rows along the probe plate 31, the probe holes 311 on the inner side of each row are aligned with the electrode plates 61, and the probe holes 311 on the outer side of each row are aligned with the top cover 62.

In a preferred embodiment, referring to fig. 2 and 4, two rows of probe holes 311 are transversely arranged along the probe board 31, each row of probe holes 311 is provided with four probe holes 311, wherein the four probe holes 311 on the outer sides of the two rows are first probes 301, the four probes on the inner sides of the two rows are second probes 302, before preparing to test, the four first probes 301 are sequentially connected in series and then connected in series by using the positive electrode wire of a Hi-Pot machine (not shown) of the test device, then the second probes 302 of the Hi-Pot machine are sequentially connected in series and then connected in series in the test device, the probes 311 of the electric test fixture are electrically connected with the Hi-Pot machine, and the pass degree of the insulating plastic 63 is detected by the insulation resistance values measured by the detection terminal electric shock pole piece and the top cover plate 62 of the probes 311, so that the error is reduced and the detection accuracy is increased.

It can be understood that the principle of the Hi-point machine (not shown) is that the leakage current generated by the tested power battery top cover plate under the test high voltage output by the high voltage machine is compared with the set judgment current, and if the detected leakage current values are smaller than the preset value, the tested power battery top cover plate passes the test, when the leakage current is larger than the judgment current, the test voltage is cut off instantaneously and an audible and visual alarm is sent out, so that the insulation of the tested product is not qualified, and the device can be connected with the probe of the electric detection tool in series interactively. The Hi-pot machine is the prior art and will not be described in detail herein.

Referring to fig. 1 and 4, a support arm 34 is disposed on a side of the connection board 32 facing the probe board 31 and is connected to an upper end of the probe board 31, and a sliding end 35 is disposed on a side of the connection board 32 facing the support assembly 4, wherein the support arm 34 includes a vertical portion 341 and a horizontal portion 342, the vertical portion 341 is mounted on a board surface of the connection board 31, and the probe board 31 is suspended below the horizontal portion 342.

Referring to fig. 2, the support assembly 4 includes a sliding rail plate 41 connected to the connecting plate 32, support plates 42 supported on two sides of the sliding rail plate 41, and a cylinder liner plate 43 supporting the cylinder 5, the sliding rail plate 41 is provided with a sliding rail 411 corresponding to the sliding end 35, the sliding rail plate 41 is provided with a sliding groove 412 corresponding to the connecting block 33, wherein the sliding groove 412 is formed directly under the connecting block 33, and it is understood that the sliding rail plate 41 and the cylinder liner plate 43 are mainly in a flat plate shape, and the sliding rail groove 412 is mainly in a U shape.

Referring to fig. 2, the air cylinder 5 is provided with a guide post 51, one end of the guide post 51 facing the connection block 33 is provided with a connection end 52, one end of the connection block 33 corresponding to the connection end 52 is provided with a connection bolt 36, the connection bolt 36 is connected to the connection end 52, when the air cylinder 5 performs vertical displacement, the air cylinder 5 slides up and down on the slide rail 411 through the sliding ends on the connection block 33 and the connection plate 32 to drive the whole upper die assembly 3 to realize vertical displacement, so that the probe 31 contacts the power battery top cover plate 6, automatic or semi-automatic detection is realized, and the working efficiency is improved.

In a preferred embodiment, referring to fig. 2 and 4, the connecting block 33 is further provided with a mounting hole 331, the mounting hole 331 is provided with an oil buffer 7, the oil buffer 7 is used for reducing vibration and noise in an automatic mechanical operation, converting kinetic energy generated by an object in motion into thermal energy and releasing the thermal energy into the atmosphere, and effectively stopping the object in motion.

Referring to fig. 1 to 4, the following is a workflow of the electrical inspection tool: first, the first probe 301 and the second probe 302 are loaded into the probe hole 311; secondly, the starting cylinder 5 pulls down the hydraulic buffer 7 through the connecting block 33 to move in the sliding rail groove 412, when the cylinder 5 moves up and down, the cylinder 5 slides on the sliding rail 411 on the sliding rail plate 41 through the connecting block 33 and the sliding end 35 on the connecting plate 32 to drive the whole upper die assembly 3 to move up and down and drive the probe plate 31 to move towards the power battery top cover plate 6; then, when the probe 312 contacts the top cover plate 6 of the power battery, the movement of the air cylinder 5 is completed, the hydraulic buffer 7 plays a role in balancing in movement, so that the upper die assembly 3 is slowly stopped, then the positive electrode wiring of the Hi-port machine (not shown) of the test equipment is connected with the first probe 301 in series, the negative electrode wiring of the Hi-port machine of the test equipment is continuously connected with the second probe 302 in series, and the connection of the electric detection jig and the test equipment is completed; finally, whether the insulation property of the insulation plastic 63 is qualified or not is verified through the insulation resistance value measured by the detection end of the probe 311 and the detection end of the electrode plate 61 and the top cover plate 62, wherein the detection requirement is that the insulation resistance of the negative electrode of the electrode plate 61 and the top cover plate 62 is more than 200Mohm (Hi-port machine test) under the voltage of 500V, and the insulation resistance of the positive electrode of the electrode plate 61 and the top cover plate 62 is more than 200Mohm (Hi-port machine test) under the voltage of 500V, and meanwhile, the detection requirement is achieved.

The foregoing examples only represent preferred embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. The utility model provides an electricity examines tool for detect the power battery top cover plate that is equipped with electrode slice and lamina tecti, its characterized in that, electricity examines the tool including the bottom plate, locate be used for the location on the bottom plate the lower mould subassembly of power battery top cover plate, be located the last mould subassembly of power battery top cover plate top, be used for supporting the supporting component of last mould subassembly, drive go up the mould subassembly is in the cylinder of displacement on the supporting component, go up the mould subassembly and be equipped with and be located the probe board of power battery top cover plate top, the probe board corresponds the electrode slice is equipped with a plurality of probe holes of arranging in proper order and locates the probe in the probe hole, the probe is in go up the mould subassembly and move to power battery top cover plate department when contact electrode slice with lamina tecti simultaneously.

2. The electrical inspection jig of claim 1, wherein the probe holes are arranged in two rows along the probe plate in a lateral direction, the number of probe holes in each row being an even number.

3. The electrical inspection jig according to claim 1, wherein the upper die assembly further comprises a connection plate for suspending the probe board, a connection block connected between the connection plate and the cylinder, a support arm is provided on a side of the connection plate facing the probe board for connecting to an upper end of the probe board, and a sliding end is provided on a side of the connection plate facing the support assembly.

4. The electrical inspection jig of claim 3, wherein the support assembly comprises a slide rail plate connected to the connection plate, support plates supported on both sides of the slide rail plate, and a cylinder liner plate supporting the cylinder.

5. The electrical inspection jig according to claim 4, wherein the slide rail plate is provided with a slide rail corresponding to the slide end, and the slide rail plate is provided with a slide groove corresponding to the connection block.

6. The electrical inspection jig according to claim 5, wherein the cylinder is provided with a guide post, a connecting end is provided at one end of the guide post facing the connecting block, a connecting bolt is provided at one end of the connecting block corresponding to the connecting end, and the connecting bolt is connected to the connecting end.

7. The electrical inspection jig according to claim 2, wherein a first probe provided in the probe hole on the inner side and a second probe provided in the probe hole on the outer side, the first probe contacting the electrode sheet, the second probe contacting the top cover plate.

8. The electrical inspection jig according to claim 3, wherein the connection block is further provided with a mounting hole in which an oil buffer is mounted.

9. The electrical inspection jig according to claim 1, wherein the lower die assembly comprises a positioning block for supporting the power battery top cover sheet, a limiting block arranged around the positioning block and closely attached to the power battery top cover sheet, and a supporting block arranged close to the lower portion of the positioning block.

10. The electrical inspection jig of claim 3, wherein the support arm comprises a vertical portion and a horizontal portion, the vertical portion is mounted on the connection plate, and the probe card is suspended below the horizontal portion.