Probe guide assembly and formation clamp

Abstract

The utility model discloses a probe guiding assembly and a formation clamp, and relates to the technical field of battery cell testing equipment, and the probe guiding assembly comprises at least one fixing seat which is used for positioning and fixing a probe; the support comprises a first channel and a second channel, the first channel and the second channel are oppositely arranged, the first channel is used for positioning and limiting the battery cell, the second channel is communicated with the first channel, and the second channel is used for adjusting the position of the fixed seat relative to the support in the butt joint process of the fixed seat and the support; and the test end of the probe is guided to the central shaft of the battery cell. In the formation test, when the test end of the probe deviates from the central axis of the battery cell, the fixed seat can adjust the relative position with the support under the action of the second channel to drive the test end of the probe to approach the central axis of the battery cell, so that the test end of the probe can reach the center of the battery cell when the probe is in contact with the battery cell; accurate butt joint of formation testing is ensured, and the situation that the probe scratches the battery cell or the probe is damaged can be effectively avoided.

Description

Technical Field

[0001] This application relates to the field of battery cell testing equipment technology, and in particular to a probe guiding assembly and a formation fixture. Background Technology

[0002] In vertical formation fixtures, it is necessary to cause relative displacement between the battery cells on the tray and the probe assemblies located on opposite sides of the cells, so that the batch of cylindrical cells arranged in an array on the tray can simultaneously contact the probes to achieve charging formation. However, while this method of simultaneously contacting and conducting electricity to the array of cylindrical cells can improve formation efficiency, it can also easily lead to difficulties in maintaining accurate positioning of each cell and its corresponding probe, and it is also difficult to ensure that the probe and the center of the cell terminal are on the same axis, resulting in the possibility of the probe scratching the cell or damaging the probe itself. Utility Model Content

[0003] This application aims to solve one of the aforementioned technical problems in the prior art. To this end, embodiments of this application provide a probe guiding component.

[0004] This application also provides a chemical formation fixture.

[0005] According to an embodiment of the first aspect of this application, a probe guiding assembly is provided, including at least one fixing seat for positioning and fixing a probe; at least one support, the support including a first channel and a second channel, the first channel being disposed opposite to the second channel, the first channel being used for positioning and defining the battery cell, the second channel being connected to the first channel, the second channel being used to adjust the position of the fixing seat relative to the support during the docking process between the fixing seat and the support, so as to guide the test end of the probe to the central axis of the battery cell.

[0006] The aforementioned probe guiding assembly has at least the following beneficial effects: During the cell formation test, the cell is embedded in the first channel, the fixing seat and the support face each other and dock, and the fixing seat with one end of the probe enters the second channel. As the distance between the probe and the cell decreases, when there is an offset between the test end of the probe and the central axis of the cell, the fixing seat can gradually adjust its relative position with the support under the action of the second channel, so as to drive the test end of the probe toward the central axis of the cell, so that when the probe contacts the cell, the test end of the probe can reach the center of the cell, ensuring accurate docking of the formation test, so that the probe and the cell can be coaxially set when docking, thereby effectively avoiding the probe scratching the cell or the probe being damaged, improving the accuracy of the docking between the cell and the probe, and thus improving the reliability of the cell charging formation operation.

[0007] According to the probe guiding assembly of the first aspect of this application, a first guiding structure is provided at the end of the second channel away from the first channel, and the first guiding structure is used to adjust the central axis of the fixing seat to be collinear with the central axis of the first channel.

[0008] According to the probe guiding assembly described in the first aspect of this application, the second channel includes a first channel segment and a second channel segment. One end of the first channel segment is used to connect to the first channel, and the other end of the first channel segment is connected to the second channel segment. The first channel segment is configured to be able to fit with the fixed seat with a clearance. The diameter of the second channel segment gradually increases from one end connected to the first channel segment to the other end. The second channel segment is formed as the first guiding structure.

[0009] According to the probe guiding assembly of the first aspect of this application, the fixing seat is used to connect a second guiding structure to one end of the support.

[0010] According to the probe guiding assembly of the first aspect of this application, the second guiding structure includes a right-angle chamfer or a rounded chamfer disposed on the end edge of the fixing seat.

[0011] According to the probe guiding assembly of the first aspect of this application, the probe guiding assembly further includes a mounting base and an adjusting member, the adjusting member being connected to the fixed base and the mounting base, the adjusting member being used to enable the fixed base to be radially adjusted during the docking of the fixed base and the support.

[0012] According to the probe guiding assembly described in the first aspect of this application, the adjusting element is a thrust bearing.

[0013] According to the probe guiding assembly of the first aspect of this application, at least two adjusting members are provided, the adjusting members are embedded in the mounting base along the axial direction of the probe, and the fixing base is sequentially inserted into a plurality of the adjusting members.

[0014] According to the probe guiding assembly described in the first aspect of this application, the groove edge of the first channel is provided with a right-angle chamfer or a rounded chamfer.

[0015] According to an embodiment of the second aspect of this application, a formation fixture is provided, including the probe guiding structure described in the first aspect embodiment above.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0017] The present application will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 This is a schematic diagram of the structure of the formation fixture in the embodiments of this application. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the structure of the formation fixture in the embodiments of this application. Figure 2 ;

[0020] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 yes Figure 2 Enlarged diagram of point B in the middle.

[0022] Figure label:

[0023] Drive component 100; first fixing component 210, first mounting component 220, guide post 230, second fixing component 240, second mounting component 250; tray 300; probe assembly 400; probe 500; support 610, first channel 611, third guide structure 611a, second channel 612, first slot segment 612a, second slot segment 612b, fixing seat 620, second guide structure 621, thrust bearing 630, mounting seat 640. Detailed Implementation

[0024] This section will describe in detail the specific embodiments of this application. Preferred embodiments of this application are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of this application, but they should not be construed as limiting the scope of protection of this application.

[0025] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0026] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0027] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0028] Reference Figure 1 and Figure 2 This application provides a formation fixture, which includes a probe guiding assembly. Under the action of the probe 500 guiding assembly, during the charging formation process, the probe 500 can accurately align with the end center of the battery cell, ensuring the accuracy of the formation test, and also avoiding the situation where the probe 500 scratches the battery cell or is damaged.

[0029] In some embodiments, the formation fixture further includes a drive member 100, a tray 300, a first mounting member 220, and a second mounting member 250. A portion of the probe guiding assembly is disposed on the second mounting member 250. The first mounting member 220 is provided with another probe assembly 400. The first mounting member 220 and the second mounting member 250 are distributed on both sides of the tray 300. The tray 300 is used for batch placement of battery cells. The tray 300 and the first mounting member 220 are configured to slide in the vertical direction. The drive member 100 drives the first mounting member 220, the second mounting member 250, and the tray 300 to move closer to each other to complete the charging formation test.

[0030] In some specific embodiments provided in this application, the chemical formation fixture further includes a first fixing member 210 and a second fixing member 240. The driving member 100 is fixed to the first fixing member 210 by bolts. The first fixing member 210 is connected to the second mounting member 250 through guide posts 230. Specifically, there are four guide posts 230. The second fixing member 240 and the first mounting member 220 are both disposed between the first fixing member 210 and the second mounting member 250. The second fixing member 240 and the first mounting member 220 are slidably connected to the guide posts 230 through bushings so that the second fixing member 240 and the first mounting member 250 can move and adjust coaxially.

[0031] The second fixing member 240 is used to fix the tray 300, the first mounting member 220 is used to fix the probe assembly 400, the probe guide assembly is disposed on the second mounting member 250, and the driving member 100 is an electric cylinder connected to the first mounting member 220. The electric cylinder drives the probe assembly 400, the probe guide assembly, and the tray 300 to move closer to each other to complete the charging formation test.

[0032] In some embodiments, this application also provides a probe guiding assembly, which includes at least one fixing seat 620 and at least one support 610. The fixing seat 620 is used for positioning and fixing the probe 500, and the support 610 is used for positioning and fixing the battery cell. In the formation fixture, the support 610 is fixed to the tray 300, and the fixing seat 620 is fixed to the first mounting member 220 or the second mounting member 250.

[0033] In this embodiment, multiple fixing bases 620 are provided, and the number of fixing bases 620 is the same as the number of supports 610. The arrangement of fixing bases 620 is consistent with the arrangement of supports 610 and corresponds one-to-one, so that the probe 500 and the battery cell can be tested in batches during the charging formation test.

[0034] The support 610 includes a first channel 611 and a second channel 612. The first channel 611 and the second channel 612 are arranged opposite to each other. The first channel 611 is used for positioning and limiting the battery cell. In actual use, the battery cell is embedded in the first channel 611. The second channel 612 is connected to the first channel 611. The second channel 612 is used to adjust the position of the fixed seat 620 relative to the support 610 during the docking process between the fixed seat 620 and the support 610, so as to guide the test end of the probe 500 to the central axis of the battery cell.

[0035] During the cell formation test, the cell is embedded in the first channel 611. Under the action of the formation fixture, the fixing seat 620 and the support 610 approach each other and dock. Specifically, one end of the fixing seat 620 with the probe 500 fixed in it enters the second channel 612. As the distance between the probe 500 and the cell decreases, when there is a misalignment between the test end of the probe 500 and the central axis of the cell, the fixing seat 620 gradually adjusts its relative position with the support 610 under the action of the second channel 612, so as to drive the test end of the probe 500 toward the central axis of the cell. This ensures that when the probe 500 contacts the cell, the test end of the probe 500 can reach the center of the cell, ensuring accurate docking during the formation test. This allows the probe 500 and the cell to be coaxially positioned when docking, effectively preventing the probe 500 from scratching the cell or being damaged, improving the accuracy of the docking between the cell and the probe 500, and thus improving the reliability of the cell charging formation operation.

[0036] Specifically, in this embodiment, the first channel 611 and the second channel 612 are coaxially arranged, and the probe 500 is disposed at the center of the fixing base 620. The central axis of the probe 500 is collinear with the central axis of the fixing base 620. During the charging formation process, the test end of the probe 500 enters from the second channel 612 and reaches the bottom of the first channel 611 to contact the end center of the battery cell. The second channel 612, in conjunction with the fixing base 620, can effectively correct the deviation of the test end of the probe 500, effectively solving the problem that the center of the test end of the probe 500 is not collinear with the central axis of the battery cell.

[0037] In some examples, a first guide structure is provided at the end of the second channel 612 away from the first channel 611. The first guide structure is used to adjust the central axis of the fixed seat 620 to be collinear with the central axis of the first channel 611. The first guide structure plays a role in gradual adjustment, so that the relative position adjustment of the fixed seat 620 and the support 610 during the docking process is a gradual process, avoiding docking impact.

[0038] In some examples, such as Figure 3 As shown, the second channel 612 includes a first channel segment 612a and a second channel segment 612b. One end of the first channel segment 612a is connected to the first channel 611, and the other end of the first channel segment 612a is connected to the second channel segment 612b. The first channel segment 612a is configured to be able to fit with the fixed seat 620 with a clearance. The diameter of the second channel segment 612b gradually increases from the end connected to the first channel segment 612a to the other end. The second channel segment 612b forms a first guide structure.

[0039] The first groove segment 612a and the fixed seat 620 are in clearance fit, ensuring accurate docking between the fixed seat 620 and the support 610. The second groove segment 612b acts as a guide. When the central axis of the fixed seat 620 is not collinear with the first groove segment 612a, the abutting fit between the fixed seat 620 and the support 610 corrects the deviation of the fixed seat 620, allowing it to smoothly enter the first groove segment 612a for docking.

[0040] In this section, the diameter of the second groove segment 612b gradually increases from one end to the other. The diameter of one end of the second groove segment 612b is the same as the diameter of the first groove segment 612a, and the diameter of the other end of the second groove segment 612b is greater than the diameter of the first groove segment 612a. That is, the shape of the groove wall can be conical or arc-shaped.

[0041] In some embodiments, a second guide structure 621 is provided at one end of the fixing seat 620 for docking with the support 610. The second guide structure 621 can also effectively guide the fixing seat 620 into the second channel 612, ensuring smooth docking.

[0042] In some specific embodiments, the second guide structure 621 includes a right-angle chamfer or a rounded chamfer on the end edge of the fixed base 620.

[0043] In some specific embodiments, one end of the support 610 is recessed towards the other end to form a first channel 611, and the other end of the support 610 is recessed towards the first channel 611 to form a second channel 612. The bottom of the first channel 611 is connected to the bottom of the second channel 612 through a through hole, so that the probe 500 can enter from the second channel 612 and reach the bottom of the first channel 611 to contact the end of the battery cell.

[0044] In some embodiments, the probe guiding assembly further includes a mounting base 640 and an adjusting member connected to the fixed base 620 and the mounting base 640. The adjusting member is used to enable the fixed base 620 to be radially adjusted during the docking of the fixed base 620 with the support 610.

[0045] In the chemical formation fixture, a mounting base 640 is disposed on the second mounting member 250, and a fixing base 620 is disposed on the mounting base 640. An adjusting member exists between the fixing base 620 and the mounting base 640. This adjusting member bears the axial load of the fixing base 620, and during the docking process between the fixing base 620 and the support 610, it allows the fixing base 620 to be adjusted radially, ensuring that both ends of the fixing base 620 remain collinear with the central axis of the first channel 611 or the central axis of the second channel 612. This avoids a situation where the test end portion of the probe 500 is on the central axis of the second channel 612, but the center of the remaining portion of the probe 500 is not on the central axis of the second channel 612.

[0046] In some embodiments, the adjusting element can be a thrust bearing 630, and the fixed seat 620 is mounted on the mounting seat 640 via the thrust bearing 630, so that the load along the axial direction of the fixed seat 620 can be borne, and the fixed seat 620 can also be adjusted in the radial direction.

[0047] In some specific embodiments, at least two adjustment members are provided. The adjustment members are embedded in the mounting base 640 along the axial direction of the probe 500, and the fixing base 620 is sequentially inserted into multiple adjustment members.

[0048] When the adjusting component is a thrust bearing 630, the adjusting component includes a shaft ring, a seat ring, and several rolling elements. The mounting base 640 is provided with a mounting groove for the adjusting component to be embedded. The fixed base 620 is plugged into the shaft ring. The seat ring is embedded in the mounting groove and has a hole through which the fixed base 620 passes. The rolling elements are disposed between the shaft ring and the seat ring, and the position of the rolling elements is adjusted by a cage.

[0049] In some other embodiments, the adjusting element can also be a spring, and the mounting base 640 is provided with a sliding groove for limiting the disengagement of the fixed base 620. Specifically, a limiting slider is provided at the end of the fixed base 620, and the limiting slider is located in the sliding groove so that the fixed base 620 can slide in the radial direction. Several springs are provided between the limiting slider and the sliding groove. The springs are arranged in a circumferential array on the outer periphery of the limiting slider so that during the docking process between the fixed base 620 and the second channel 612 of the support 610, if the central axis of the fixed base 620 is not collinear with the central axis of the second channel 612, the fixed base 620 as a whole can generate radial displacement, and after the fixed base 620 separates from the second channel 612, it can automatically return to its original position due to the presence of the springs.

[0050] In some embodiments, the groove edge of the first channel 611 is provided with a right-angle chamfer or a rounded chamfer to form a third guide structure 611a. The third guide structure 611a facilitates the embedding of the battery cell into the first channel 611.

[0051] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A probe guide assembly, characterized by: The probe guiding assembly comprises at least one fixing seat for positioning and fixing the probe; at least one support, the support comprising a first channel and a second channel, the first channel being oppositely arranged with the second channel, the first channel being used for positioning and limiting the battery cell, the second channel being in communication with the first channel, the second channel being used for adjusting the position of the fixing seat relative to the support during the docking of the fixing seat and the support, so as to guide the testing end of the probe to the central axis of the battery cell.

2. The probe guide assembly of claim 1, wherein: The second channel is provided with a first guide structure at the end away from the first channel, the first guide structure being used for adjusting the central axis of the fixing seat to be collinear with the central axis of the first channel.

3. The probe guide assembly of claim 2, wherein: The second channel comprises a first channel segment and a second channel segment, one end of the first channel segment being used for communicating with the first channel, the other end of the first channel segment being in communication with the second channel segment, the first channel segment being configured to be able to fit with the fixing seat in a gap, the diameter of the second channel segment gradually increasing from one end connected with the first channel segment to the other end, the second channel segment being formed as the first guide structure.

4. The probe guide assembly of claim 1, wherein: The fixing seat is provided with a second guide structure at the end for docking the support.

5. The probe guide assembly of claim 4, wherein: The second guide structure comprises a right-angled chamfer or a round chamfer arranged at the end edge of the fixing seat.

6. A probe guide assembly according to any one of claims 1 to 5, wherein: The probe guiding assembly further comprises a mounting seat and an adjusting piece, the adjusting piece being connected to the fixing seat and the mounting seat, the adjusting piece being used for enabling the fixing seat to be adjusted in the radial direction during the docking of the fixing seat and the support.

7. The probe guide assembly of claim 6, wherein: The adjusting piece is a thrust bearing.

8. The probe guide assembly of claim 7, wherein: The adjusting piece is provided in at least two pieces, the adjusting piece being embedded in the mounting seat in the axial direction of the probe, the fixing seat being sequentially inserted into the plurality of adjusting pieces.

9. The probe guide assembly of claim 1, wherein: The slot edge of the first channel is provided with a right-angled chamfer or a round chamfer.

10. A formation clamp characterized by: The probe guiding assembly comprises any one of claims 1 to 9. The probe guiding assembly comprises any one of claims 1 to 9.

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