Double-station switching insulation test mechanism

Abstract

The utility model discloses a double-station switching insulation test mechanism, which comprises a fixed base and an extrusion mechanism arranged on the fixed base, at least two groups of insulation test tools are arranged above the fixed base, and a transplanting cylinder used for driving the insulation test tools to move is arranged on the fixed base. Wherein one group of insulation test tools starts testing when moving to the test position of the extrusion mechanism, and the other group of insulation test tools is located at the material taking position for loading and unloading. According to the invention, the two sets of insulation test tools are arranged on the guide rail, and the two sets of insulation test tools can be switched to the test position and the grabbing position through the transplanting cylinder, so that the insulativity of the upper and lower surfaces and the side surfaces of the battery cell to the end part of the battery cell is tested; two sets of insulation test tools can be tested by one insulation test instrument, the cell feeding and discharging time and the insulation test time are effectively staggered, and the utilization rate of the insulation test tools and the instrument is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery testing technology, specifically to a dual-station switching insulation testing mechanism. Background Technology

[0002] With the expanding demand in the automotive power battery market and the continuous improvement of power battery production technology, higher requirements are being placed on production line layout and equipment capacity. After a single battery cell is coated with a blue film, the insulation performance of the blue film needs to be tested. Cell insulation testing institutions are specialized organizations responsible for testing and evaluating the insulation performance of battery cells. Their main responsibilities include measuring the insulation resistance between the cell casing and the internal electrodes to ensure compliance with safety standards; testing the insulation performance of the cell under high voltage to ensure no breakdown or leakage; and evaluating the insulation performance of the cell under different environmental conditions.

[0003] Currently, most insulation testing methods use one insulation tester to test one set of testing fixtures, which results in a long insulation testing time and makes insulation testing a bottleneck process. The current solution is to increase the number of workstations to address the cycle time issue, but this not only increases equipment costs but also increases the equipment footprint. Based on this, this application proposes a dual-workstation switching insulation testing mechanism to solve the above-mentioned shortcomings. Utility Model Content

[0004] The technical problem to be solved by this utility model is: how to solve the problem that a set of battery cell insulation testing mechanism only tests one set of testing fixtures, resulting in low utilization rate.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A dual-station switching insulation testing mechanism includes a fixed base and an extrusion mechanism mounted thereon. At least two sets of insulation testing fixtures are installed above the fixed base. A transfer cylinder for driving the insulation testing fixtures to move is installed on the fixed base. When one set of insulation testing fixtures moves to the testing position of the extrusion mechanism, the test is started. The other set of insulation testing fixtures is located at the material handling position for loading and unloading.

[0007] This application sets two sets of insulation testing fixtures on a guide rail. The two sets of insulation testing fixtures can be switched to the testing position and the gripping position by a transfer cylinder, thereby testing the insulation of the upper and lower surfaces and sides of the battery cell to the battery cell end. By switching the testing fixtures and switching the insulation testing circuit, one insulation testing instrument can test two sets of insulation testing fixtures, effectively staggering the battery cell loading and unloading time and the insulation testing time, and improving the utilization rate of insulation testing fixtures and instruments.

[0008] As a further embodiment of this utility model: the extrusion mechanism includes a frame, a top extrusion assembly and a side extrusion assembly, wherein the top extrusion assembly is installed above the frame and can extrude the cell from the top; the side extrusion assemblies are installed on both sides of the frame and can extrude the cell from both sides.

[0009] This application, by setting a top extrusion assembly and a side extrusion assembly, can extrude and fix the battery cell from the top and both sides of the battery cell, respectively, to ensure the stability of the battery cell during subsequent insulation testing.

[0010] As a further embodiment of this utility model: the frame includes a top plate, an upper pressure plate fixing block and a linear optical axis. The upper pressure plate fixing block is located directly below the top plate, and the four corners of the top plate are respectively installed on the fixed base through the upper pressure plate fixing block via the linear optical axis.

[0011] The top plate and upper pressure plate are mounted directly above the fixed base using four linear optical axes. The top extrusion assembly is installed on the top plate and upper pressure plate, while the side extrusion assembly is installed on both sides of the fixed base between the two linear optical axes. Several extrusion structures are integrated into the frame, reducing space occupation and improving space utilization.

[0012] As a further embodiment of this utility model: the top extrusion assembly includes a downward pressure cylinder located at the top of the frame, and the output end of the downward pressure cylinder is sequentially connected to an upper pressure plate conductive copper block, an upper pressure plate insulating block, and an upper pressure plate conductive rubber.

[0013] The downward-pressing cylinder can drive the upper pressure plate conductive copper block, upper pressure plate insulating block, and upper pressure plate conductive rubber to move simultaneously toward the battery cell. During use, when the battery cell reaches the test position, it is located directly below the upper pressure plate conductive rubber, thus ensuring the stable positioning of the battery cell during insulation testing.

[0014] As a further embodiment of this utility model: the side extrusion assembly includes side cylinder mounting seats installed on both sides of the frame, a side extrusion cylinder is installed on the top of the side cylinder mounting seats, and a side insulating plate, a side conductive copper plate and a side conductive rubber are sequentially connected to the side extrusion cylinder facing the inner side of the battery cell.

[0015] The side-squeezing cylinder can drive the side insulating plate, side conductive copper plate and side conductive rubber to move towards the battery cell simultaneously. When in use, the battery cell is located exactly in the middle of the two sets of side-squeezing cylinders when it reaches the test position, which can ensure that the battery cell can be stably limited during insulation testing.

[0016] As a further embodiment of this utility model: the fixed base includes a fixed base plate located at the bottom, and a slide table fixed support plate is installed on both sides of the top of the fixed base plate, wherein a guide rail is installed on the slide table fixed support plate, and the bottom of the insulation test fixture can move on the guide rail.

[0017] By installing a guide rail above the fixed substrate, the insulation test fixture can move along the guide rail under the drive of the transfer cylinder, thereby realizing the movement of two sets of insulation test fixtures, so as to switch test fixtures and switch insulation test circuits, and realize one insulation test instrument to test two sets of insulation test fixtures.

[0018] As a further embodiment of this utility model: two sets of sensor fixing brackets are symmetrically installed at both ends of the top of the fixed base, and a through-beam sensor is installed on the top of the sensor fixing bracket.

[0019] By setting through-beam sensors at both ends of the fixed base, when one insulation test fixture moves to the test station, the other insulation test fixture is exactly at the position of the through-beam sensor, and its precise position can be measured by the through-beam sensor.

[0020] As a further embodiment of this utility model: the top of the insulation testing fixture is provided with a bottom insulating plate, a bottom conductive copper block and a bottom conductive rubber in sequence from bottom to top, and a battery cell is placed on top of the bottom conductive rubber. A detection end and a fixing end are respectively provided at both ends of the top of the insulation testing fixture.

[0021] The insulation testing fixture has a bottom insulating plate, a bottom conductive copper block, and a bottom conductive rubber arranged sequentially from bottom to top on the top, which can contact the bottom of the battery cell. Detection ends and fixing ends are set on both sides. The fixing ends are used to limit the position of the battery cell, and the detection ends are used for battery cell insulation testing.

[0022] As a further embodiment of this utility model: the detection end includes a limiting cylinder II, the output end of the limiting cylinder is connected to a cylinder connecting block, the cylinder connecting block is connected to a probe fixing limiting block, and an insulation test probe is provided on the side of the probe fixing limiting block facing the battery cell.

[0023] By setting an insulation test probe, which is driven by a limiting cylinder, the insulation test probe can be moved to contact the battery cell, thereby realizing the insulation test of the battery cell.

[0024] As a further embodiment of this utility model: the fixed end includes a limiting cylinder, and the output end of the limiting cylinder is connected to a battery cell limiting block that can contact the battery cell.

[0025] By setting up a cell limiting block, which is driven by a limiting cylinder, the cell limiting block can be moved to the cell contact point, thereby achieving the fixation of the cell insulation test. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the dual-station switching cell insulation testing mechanism according to an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the insulation testing fixture according to an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the dual-station switching cell insulation testing mechanism from another perspective, according to an embodiment of the present invention.

[0029] Figure 4 This is a front view of the dual-station switching cell insulation testing mechanism according to an embodiment of the present invention;

[0030] Figure 5 This is a rear view of the dual-station switching cell insulation testing mechanism according to an embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of the structure of the slide table fixing base limiting block and the slide table fixing base in an embodiment of the present utility model;

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Extrusion mechanism; 11. Lower pressure cylinder; 12. Top plate; 13. Pressure plate connecting block; 14. Linear optical axis; 15. Upper pressure plate fixing block; 16. Side cylinder fixing seat; 17. Side extrusion cylinder; 18. Side insulating plate; 19. Side conductive copper plate; 110. Side conductive rubber; 111. Upper pressure plate conductive copper block; 112. Upper pressure plate insulating block; 113. Upper pressure plate conductive rubber;

[0034] 2. Insulation testing fixture; 21. Slide table fixing base connecting block; 22. Limiting cylinder one; 23. Battery cell limiting block one; 24. Bottom conductive rubber; 25. Bottom conductive copper block; 26. Bottom insulating plate; 27. Limiting cylinder two; 28. Cylinder connecting block; 29. ​​Probe fixing limiting block; 210. Battery cell limiting block two; 211. Insulation testing probe; 212. Slider;

[0035] 3. Through-beam sensor;

[0036] 4. Sensor mounting bracket;

[0037] 5. Tank chains;

[0038] 6. Tank track fasteners;

[0039] 7. Fixed base; 71. Fixed base plate; 72. Slide table fixed support plate; 73. Guide rail;

[0040] 8. Transplanting cylinder;

[0041] 9. Limit block for fixed base of slide table; 91. Limit adjustment screw; 92. Buffer damper;

[0042] 10. Slide table fixing base. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0044] Reference Figure 1 and Figure 3 A dual-station switching insulation testing mechanism includes a fixed base 7 and a pressing mechanism 1, an insulation testing fixture 2, a through-beam sensor 3, a sensor fixing bracket 4, a tank chain 5, a tank chain fixing component 6, and a transfer cylinder 8 mounted on the fixed base 7.

[0045] Reference Figure 1 The extrusion mechanism 1 includes a lower pressure cylinder 11, a top plate 12, a pressure plate connecting block 13, a linear optical axis 14, an upper pressure plate fixing block 15, a side cylinder fixing seat 16, a side extrusion cylinder 17, a side insulating plate 18, a side conductive copper plate 19, a side conductive rubber 110, an upper pressure plate conductive copper block 111, an upper pressure plate insulating block 112, and an upper pressure plate conductive rubber 113; wherein the bottom of the upper pressure plate fixing block 15 is set as a test position.

[0046] The top plate 12 and the upper pressure plate fixing block 15 are located directly above the top of the middle position of the fixed base 7. The upper pressure plate fixing block 15 is located directly below the top plate 12 and is arranged parallel to the top plate 12. Linear optical axes 14 are installed at the four corners of the bottom of the top plate 12. The linear optical axes 14 pass through the upper pressure plate fixing block 15 and are fixed to the bottom of the fixed base 7. The linear optical axes 14 are also fixed with bolts between them and the upper pressure plate fixing block 15, thereby ensuring the fixation of the top plate 12, the upper pressure plate fixing block 15 and the four linear optical axes 14.

[0047] Furthermore, a downward pressing cylinder 11 is installed on the top of the top plate 12. The output shaft of the downward pressing cylinder 11 passes through the top plate 12 and the upper pressing plate fixing block 15 and is connected to the upper pressing plate conductive copper block 111. The upper pressing plate conductive copper block 111 is located directly below the upper pressing plate fixing block 15. The bottom of the upper pressing plate conductive copper block 111 is also connected to the upper pressing plate insulating block 112. The bottom of the upper pressing plate insulating block 112 is connected to the upper pressing plate conductive rubber 113 that can contact the battery cell 8. It should be noted that a pressure plate connecting block 13 is provided at the contact position between the output shaft of the downward pressing cylinder 11 and the upper pressing plate fixing block 15.

[0048] Reference Figure 2 and Figure 5 The insulation test fixture 2 is slidably mounted on the guide rail 73 inside the fixed base 7. The insulation test fixture 2 of this application is provided in two sets, and the two sets of insulation test fixture 2 are connected by the slide table fixed base connecting block 21. The slide table fixed base connecting block 21 is installed at one end of the insulation test fixture 2.

[0049] The two insulation test fixtures 2 have the same structure. Taking one of the insulation test fixtures 2 as an example, the insulation test fixture 2 is equipped with a limit cylinder 1 22, a cell limit block 1 23, a bottom conductive rubber 24, a bottom conductive copper block 25, a bottom insulating plate 26, a limit cylinder 27, a cylinder connecting block 28, a probe fixing limit block 29, a cell limit block 210, and an insulation test probe 211. The bottom of the insulation test fixture 2 is equipped with a slider 212 that is slidably connected to the guide rail 73.

[0050] The bottom insulating plate 26 is located at the top center of the insulation test fixture 2, the bottom conductive copper block 25 is located on top of the bottom insulating plate 26, and the bottom conductive rubber 24 is located on top of the bottom conductive copper block 25. The battery cell 8 can be placed on the bottom conductive rubber 24. A battery cell limiting block 23 is slidably arranged on the top side of the insulation test fixture 2. The end of the battery cell limiting block 23 facing away from the bottom conductive rubber 24 is connected to the limiting cylinder 22. Therefore, the limiting cylinder 22 can push the battery cell limiting block 23 toward the bottom conductive rubber 24 and make contact with the battery cell 8.

[0051] A limiting cylinder 27 is slidably installed on one side of the top of the insulation testing fixture 2. A cylinder connecting block 28 is connected to the end of the limiting cylinder 27 facing the battery cell 8. A probe fixing limiting block 29 is connected to the side of the cylinder connecting block 28 facing the battery cell. An insulation test probe 211 that can contact the battery cell 8 is connected to one side of the probe fixing limiting block 29. Battery cell limiting blocks 210 for fixing the battery cell are also provided on both sides of the probe fixing limiting block 29. It should be noted that both the battery cell limiting block 210 and the battery cell limiting block 23 are "L" shaped structures. One end of the "L" shape is stuck on the upper part of the bottom conductive rubber 24 and can be released from the battery cell 8. The other end abuts against one side of the bottom conductive rubber 24, the bottom conductive copper block 25 and the bottom insulating plate 26.

[0052] Reference Figure 1 Two sets of sensor fixing brackets 4 are symmetrically arranged on the top and both ends of the fixed base 7, and on the front and rear sides of both ends of the fixed base 7. The top of the sensor fixing bracket 4 is connected to the through-beam sensor 3. When one set of insulation test fixture 2 moves to the test position, the other set of insulation test fixture 2 is located in the middle of the two sets of through-beam sensors 3. This is the material picking position, where loading and unloading can be performed, which can play the role of positioning and detection.

[0053] Reference Figure 1 A tank chain 5 is provided on one side of the top of the fixed base 7. One end of the tank chain 5 is fixed to the fixed base 7, and the other end is connected to a tank chain fastener 6. The tank chain fastener 6 is fixed to one of the insulation test fixtures 2 by bolts or pins.

[0054] Reference Figure 1 , Figure 3 and Figure 5 The fixed base 7 includes a fixed base plate 71, a slide table fixed support plate 72 and a guide rail 73. The fixed base plate 71 is located at the bottom. The slide table fixed support plate 72 is symmetrically mounted on the top of the fixed base plate 71. The guide rail 73 is mounted on the top of the two sets of slide table fixed support plates 72. The bottom of the two sets of insulation test fixtures 2 is provided with sliders 212, which can slide on the guide rail 73.

[0055] Reference Figure 3 The transfer cylinder 8 is installed on the top of the fixed base plate 71 and between the two sets of slide table fixed support plates 72. One end of the transfer cylinder 8 is connected to one of the sets of insulation test fixtures 2. The transfer cylinder 8 can pull the two sets of insulation test fixtures 2 to move along the guide rail 73, thereby realizing the switching between the test position and the material picking position.

[0056] Furthermore, a slide table fixing base limiting block 9 is provided at the material picking position at the top end of the fixed substrate 71 and at the middle test position, and the slide table fixing base limiting block 9 is located on the outside of the two sets of slide table fixing support plates 72; a slide table fixing base 10 corresponding to the position of the slide table fixing base limiting block 9 is installed at the middle position on one side of the insulation test fixture 2, and a limiting adjustment screw 91 and a buffer damper 92 that can contact the slide table fixing base 10 are installed on the slide table fixing base limiting block 9; when the insulation test fixture 2 moves to the test position or the material picking position, the slide table fixing base 10 on one side just contacts the slide table fixing base limiting block 9, which plays a limiting role, while the buffer damper 92 plays a buffering role for both.

[0057] The specific operating principle of this application is as follows:

[0058] The battery cell 8 is placed on the insulation testing fixture 2 at the material handling position using manual or mechanical grippers. The transfer cylinder 8 then moves the insulation testing fixture 2 to the testing position. The extrusion mechanism 1 simultaneously extrudes the battery cell 8 from the top, bottom, and sides. The insulation test probe 211 on the insulation testing fixture 2 extends and contacts the end of the battery cell, activating the insulation testing instrument for testing. Meanwhile, another set of insulation testing fixtures 2 is in the material handling position, where manual or mechanical grippers place or remove the battery cell 8. When the insulation test is completed, the insulation test probe 211 at the testing position retracts, the extrusion mechanism 1 retracts, and the insulation testing fixture at the testing position is removed. The insulation testing fixture 211 at the material handling position then enters the testing position. The above steps are repeated.

[0059] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A double-station switching insulation testing mechanism comprising a fixed base (7) and a pressing mechanism (1) mounted thereon, characterized in that, The fixed base (7) is provided with at least two groups of insulation test tools (2) above, and a transplanting cylinder (8) for driving the insulation test tools (2) to move is arranged on the fixed base (7), one group of insulation test tools (2) is started to test when moving to the pressing mechanism (1) test position, and the other group of insulation test tools (2) is located at the material taking position to carry out feeding and discharging.

2. A dual position changeover insulation test mechanism according to claim 1, characterised in that: The pressing mechanism (1) comprises a frame, a top pressing assembly and a side pressing assembly, wherein the top pressing assembly is arranged above the frame and can press the battery cell from the top; and the side pressing assembly is arranged on both sides of the frame and can press the battery cell from both sides.

3. A dual position changeover insulation test mechanism according to claim 2, characterised in that: The frame comprises a top plate (12), an upper pressing plate fixing block (15) and straight linear optical axes (14), the upper pressing plate fixing block (15) is located directly below the top plate (12), and the four corners of the top plate (12) are respectively connected to the fixed base (7) through the straight linear optical axes (14) penetrating through the upper pressing plate fixing block (15).

4. The dual position switch insulation test mechanism of claim 2, wherein: The top pressing assembly comprises a lower pressing cylinder (11) arranged on the top of the frame, and the output end of the lower pressing cylinder (11) is sequentially connected with an upper pressing plate conductive copper block (111), an upper pressing plate insulating block (112) and an upper pressing plate conductive rubber (113).

5. A dual position changeover insulation test mechanism according to claim 2, wherein: The side pressing assembly comprises a side edge cylinder fixing seat (16) arranged on both sides of the frame, and a side edge pressing cylinder (17) is arranged on the top of the side edge cylinder fixing seat (16), and the side edge pressing cylinder (17) is sequentially connected with a side edge insulating plate (18), a side edge conductive copper plate (19) and a side edge conductive rubber (110) towards the inside of the battery cell.

6. The dual position switch insulation test mechanism of claim 1, wherein: The fixed base (7) comprises a fixed base plate (71) located at the lowermost position, and slide table fixing support plates (72) are arranged on both sides of the top of the fixed base plate (71), wherein guide rails (73) are arranged on the slide table fixing support plates (72), and the bottom of the insulation test tool (2) can move on the guide rails (73).

7. The dual position switch insulation test mechanism of claim 1, wherein: Two groups of sensor fixing supports (4) are symmetrically arranged on both ends of the top of the fixed base (7), and a pair of sensors (3) are arranged on the top of the sensor fixing supports (4).

8. The dual position switch insulation test mechanism of claim 1, wherein: A bottom insulating plate (26), a bottom conductive copper block (25) and a bottom conductive rubber (24) are sequentially arranged on the top of the insulation test tool (2) from bottom to top, the battery cell is placed above the bottom conductive rubber (24), and a detection end and a fixed end are respectively arranged on both ends of the top of the insulation test tool (2).

9. A dual position changeover insulation test mechanism according to claim 8, characterised in that: The detection end comprises a limiting cylinder two (27), the output end of the limiting cylinder two (27) is connected with a cylinder connecting block (28), the cylinder connecting block (28) is connected with a probe fixing limiting block (29), and an insulation test probe (211) is arranged on the side of the probe fixing limiting block (29) towards the battery cell.

10. A dual position changeover insulation test mechanism according to claim 8, wherein: The fixed end comprises a limiting cylinder one (22), and the output end of the limiting cylinder one (22) is connected with a battery cell limiting block one (23) capable of contacting the battery cell.

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