Testing device
Through the cooperation of the design mount and lifting mechanism, the angular deviation problem during probe replacement is solved, ensuring that the test probe is vertically abuts the battery, avoiding damage, and improving detection accuracy and reliability.
Patent Information
- Application Number
- CN202421428537.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-06-20
AI Technical Summary
In the prior art, angle deviations are prone to occur when replacing the probe, resulting in damage to the tilt sliding and unable to vertically abut the battery.
A test device is designed, including a bench, a lifting mechanism and a test assembly. Through the mounting plate, the surface of the connecting groove is in contact with the surface of the connecting groove, ensuring that the test probe remains vertical when replaced, and the position of the lifting table is stabilized by using the locking assembly and height adjustment member to avoid angular deviation.
It realizes that the test probe is vertically abuts the battery during replacement, avoiding damage and improving detection accuracy and reliability.
Smart Images
Figure CN223166883U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of battery testing, in particular to a testing device. Background Art
[0002] In the process of battery production and manufacturing, in order to ensure the production quality, the produced batteries will be tested, and only after passing the test can they be sold on the market. During the testing process, formation and grading are key links in the production process. When performing formation and grading operations on batteries, contact probes are required for testing.
[0003] In the prior art, there are various types of probes classified according to size, shape, tooth shape, etc. Considering the different surface materials of the battery casing, charge and discharge requirements, overcurrent of the probe, contact area, contact pressure, etc., it is necessary to select a suitable probe. When replacing the probe, it is easy to cause the angle of the probe to deviate. When the probe abuts against the battery, the probe is easily damaged due to tilting and sliding. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a testing device to ensure that the test probe vertically abuts against the battery cell to be tested and avoid damaging the test probe.
[0005] To achieve the above object, the utility model adopts the following technical solutions:
[0006] A testing device includes:
[0007] A bench, on which a pressure testing piece is arranged, and the pressure testing piece is used to carry the battery cell to be tested;
[0008] A lifting mechanism, which includes a lifting platform. The lifting platform is provided with a connecting groove, and the lifting platform is arranged above the pressure testing piece;
[0009] A testing component, including a test probe and a mounting plate. The test probe passes through the mounting plate and is connected to the mounting plate. The test probe is telescopically provided with a test probe, and the mounting plate is detachably arranged in the connecting groove, and the test probe can abut against the battery cell to be tested.
[0010] As an optional solution of the above testing device, the thickness of the mounting plate is the same as the depth of the connecting groove.
[0011] As an optional solution of the above testing device, the connecting groove is opened on the bottom surface of the lifting platform.
[0012] As an optional solution of the above testing device, a plurality of conductive power connection sharp teeth are arranged at the end of the test probe.
[0013] As an alternative to the above test device, a vertically extending slide rail is provided on the bench, and the lifting mechanism further includes a locking assembly. The lifting table is slidably arranged on the slide rail, and the locking assembly is configured to lock the relative position between the lifting table and the slide rail.
[0014] As an alternative to the above test device, the lifting table includes two guiding ridges arranged at intervals, and a chute is formed between the two guiding ridges. The slide rail is slidably engaged with the chute, and the locking assembly can push against at least one of the guiding ridges to reduce the distance between the two guiding ridges.
[0015] As an alternative to the above test device, the width of the chute gradually decreases in the direction from the bottom of the chute to the opening of the chute, and the width of the slide rail matches that of the chute.
[0016] As an alternative to the above test device, the locking assembly includes a locking plate and at least two locking screws. The locking plate is attached to one of the guiding ridges, and the two locking screws are both threadedly connected to the lifting table and abut against the locking plate.
[0017] As an alternative to the above test device, the lifting mechanism further includes a height adjusting member. The height adjusting member is rotatably arranged on the lifting table. A rack is arranged on the slide rail in the vertical direction. A gear is coaxially fixed to the height adjusting member, and the gear meshes with the rack.
[0018] As an alternative to the above test device, the rack is arranged on the end face of the slide rail facing the lifting mechanism. An adjusting groove is formed in the chute in the vertical direction. The rack extends into the adjusting groove. The height adjusting member passes through the lifting table, and part of the gear is located in the adjusting groove and meshes with the rack.
[0019] Advantages of the present utility model:
[0020] The present utility model provides a test device. In this test device, the battery cell to be tested is placed on the pressure test piece. The operator moves the lifting table downward to make the test probe of the test head abut against the battery cell to be tested for testing. The test head is assembled and disassembled through the cooperation between the mounting plate and the connecting groove. Since the bottom surfaces of the mounting plate and the connecting groove are in surface contact, the test probe can be positioned. Therefore, when replacing the test head, only by stably arranging the mounting plate in the connecting groove, it can be ensured that the test probe extends in the vertical direction without angular deviation, so that the test probe can vertically abut against the battery cell to be tested and avoid damaging the test probe. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 is a schematic structural diagram of the test device provided by the present utility model;
[0022] Figure 2 is a schematic structural view of the lifting mechanism provided by the present utility model;
[0023] Figure 3 is a schematic structural view of the test component provided by the present utility model.
[0024] In the figure:
[0025] 100, cylindrical battery cell; 101, positive electrode;
[0026] 1, bench; 2, pressure test piece; 3, lifting mechanism; 4, test component; 5, slide rail; 6, rack;
[0027] 21, base; 22, test bench; 31, lifting table; 32, locking component; 33, guiding rib; 34, chute; 35, connecting rib; 36, height adjusting part; 37, gear; 38, adjusting groove; 41, test probe; 42, mounting plate;
[0028] 311, connecting groove; 321, locking plate; 322, locking screw; 411, test probe;
[0029] 4111, power connection sharp tooth. Detailed implementation manners
[0030] The following details the embodiments of the present utility model. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as limiting the present utility model.
[0031] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.
[0032] Unless otherwise clearly defined and limited, the terms "installation", "connection", "attachment", "fixation" shall be understood in a broad sense. For example, it may be a fixed connection or a detachable connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0033] Unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first feature and the second feature, or may include the situation where the first feature and the second feature are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.
[0034] The technical solution of the present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0035] During the battery production and manufacturing process, in order to ensure the production quality, the produced batteries will be inspected, and only those that pass the inspection can be sold on the market. During the inspection process, formation and grading are two of the most important steps. It should be noted that formation is the process of the first charge of the battery, which is used to activate the active materials in the battery body, and this is a complex and important process that affects the battery performance. Grading is to charge and discharge the battery to detect the discharge capacity of the battery to determine whether the capacity of the battery meets the design requirements. Only the qualified batteries screened through the capacity test can be used. When performing formation and grading operations on the battery, contact probes need to be used for testing.
[0036] In the prior art, there are various types of probes classified according to size, shape, tooth shape, etc. For different battery shell surface materials, charge and discharge requirements, overcurrent of the probe, contact area, contact pressure, etc., it is necessary to select a suitable probe. When replacing the probe, it is easy to cause deviation in the angle of the probe. When the probe abuts against the battery, it is easy to cause damage to the probe due to tilting and sliding.
[0037] This embodiment provides a testing device, as Figure 1 and Figure 2As shown, the test device includes a bench 1, a lifting mechanism 3, and a test assembly 4. A pressure test piece 2 is provided on the bench 1, and the pressure test piece 2 is used to carry the battery cell to be tested. The lifting mechanism 3 includes a lifting table 31. The lifting table 31 is provided with a connection groove 311. The lifting table 31 is arranged above the pressure test piece 2. The test assembly 4 includes a test probe 41 and a mounting plate 42. The test probe 41 passes through the mounting plate 42 and is connected to the mounting plate 42. The test probe 41 is telescopically provided with a test probe 411. The mounting plate 42 is detachably arranged in the connection groove 311, and the test probe 411 can abut against the battery cell to be tested.
[0038] In this test device, the battery cell to be tested is placed on the pressure test piece 2. The operator moves the lifting table 31 downward to make the test probe 411 of the test probe 41 abut against the battery cell to be tested for testing. The test probe 41 is assembled and disassembled through the cooperation between the mounting plate 42 and the connection groove 311. Since the bottom surface between the mounting plate 42 and the connection groove 311 is in surface contact, it can position the test probe 411 and play a role in angle limitation. Therefore, when replacing the test probe 41, only need to stably arrange the mounting plate 42 in the connection groove 311, then it can ensure that the test probe 411 extends in the vertical direction without angle deviation, so as to ensure that the test probe 411 can vertically abut against the battery cell to be tested and avoid damaging the test probe 411.
[0039] In this embodiment, the battery cell to be tested is taken as a cylindrical battery cell 100 for illustration. When the cylindrical battery cell 100 is arranged on the pressure test piece 2, the positive electrode 101 is located at the top.
[0040] As Figure 1 shown, the pressure test piece 2 includes a base 21 and a test table 22. The test table 22 is slidably arranged on the base 21 and is elastically connected to the base 21. When the lifting table 31 descends, the test probe 411 abuts against the positive electrode 101 of the cylindrical battery cell 100 and makes the test table 22 move downward. By detecting the distance that the test table 22 moves downward, the pressure of the test probe 411 on the cylindrical battery cell 100 can be known.
[0041] In this embodiment, the side wall of the connection groove 311 abuts against the side wall of the mounting plate 42 correspondingly. Generally speaking, the detection probe needs to abut against the positive electrode 101 of the cylindrical battery cell 100, and the area of the positive electrode 101 is small. The connection groove 311 can position the mounting plate 42 in the horizontal direction, thereby improving the position accuracy of the detection probe and ensuring that the detection probe can abut against the positive electrode 101 of the cylindrical battery cell 100.
[0042] As Figure 1As shown, the thickness of the mounting plate 42 is the same as the depth of the connection groove 311. When the mounting plate 42 is located within the connection groove 311, the top surface of the mounting plate 42 is flush with the lifting table 31, facilitating the operator to check whether the mounting plate 42 is in a horizontal state.
[0043] It can be understood that when the test probe 411 abuts against the positive electrode 101 of the cylindrical battery cell 100, the mounting plate 42 will receive an upward force. If the connection between the mounting plate 42 and the connection groove 311 becomes loose, the upward movement of the mounting plate 42 will affect the test results. To solve the above problem, the connection groove 311 is formed on the bottom surface of the lifting table 31. That is to say, the mounting plate 42 is installed into the connection groove 311 from below, and the bottom surface of the connection groove 311 abuts against the top surface of the mounting plate 42. During the test, the bottom surface of the connection groove 311 abuts against the mounting plate 42, which can ensure the stability of the mounting plate 42 and thus ensure the accuracy of the test results.
[0044] In this embodiment, the mounting plate 42 is detachably connected to the connection groove 311 by screws.
[0045] As Figure 3 shown, a plurality of conductive electrical contact sharp teeth 4111 are provided at the end of the test probe 411. It can be understood that the positive electrode 101 of the cylindrical battery cell 100 is made of a metal material and is prone to oxidation to form an oxide layer, which affects the detection. The electrical contact sharp teeth 4111 at the end of the test probe 411 are beneficial to piercing the oxide layer to improve the detection accuracy.
[0046] To improve the position accuracy when the test probe 411 abuts against the positive electrode 101 of the cylindrical battery cell 100, the lifting table 31 needs to be guided. As Figure 1 and Figure 2 shown, to achieve the above purpose, a vertically extending slide rail 5 is provided on the bench 1. The lifting mechanism 3 further includes a locking assembly 32. The lifting table 31 is slidably disposed on the slide rail 5, and the locking assembly 32 is configured to lock the relative position between the lifting table 31 and the slide rail 5. The slide rail 5 can ensure that the lifting table 31 does not deviate during movement, and the locking assembly 32 can lock the relative position between the lifting table 31 and the slide rail 5 after the probe abuts against the positive electrode 101 of the cylindrical battery cell 100 and the pressure reaches the required value, so as to keep the contact between the test probe 411 and the positive electrode 101 of the cylindrical battery cell 100 stable during the test.
[0047] In this embodiment, the lifting table 31 includes two guiding ridges 33 arranged at intervals, and a sliding groove 34 is formed between the two guiding ridges 33. The sliding rail 5 is slidably engaged with the sliding groove 34, and the locking assembly 32 can push against at least one guiding ridge 33 to reduce the distance between the two guiding ridges 33. Since the sliding rail 5 is slidably engaged with the sliding groove 34, the sliding rail 5 is in sliding contact with both of the two guiding ridges 33. When the locking assembly 32 pushes against at least one guiding ridge 33, the two guiding ridges 33 can clamp the sliding rail 5, thereby locking the relative position between the lifting table 31 and the sliding rail 5.
[0048] As Figure 1 and Figure 2 shown, in order to prevent the sliding rail 5 from disengaging from the sliding groove 34, the width of the sliding groove 34 gradually decreases in the direction from the groove bottom to the groove opening, and the width of the sliding rail 5 matches that of the sliding groove 34. This structure enables the lifting table 31 and the sliding rail 5 to slide relative to each other only in the vertical direction and not to disengage in the horizontal direction, ensuring the stability of the testing device. Moreover, when the locking assembly 32 pushes against at least one guiding ridge 33, the inclined inner wall of the sliding groove 34 will squeeze the sliding rail 5 towards the groove bottom of the sliding groove 34, further improving the effectiveness of locking.
[0049] In some embodiments, the locking assembly 32 includes a locking screw 322, which is threadedly connected to the lifting table 31 and abuts against one guiding ridge 33. By rotating the locking screw 322, the two guiding ridges 33 can be clamped against the sliding rail 5.
[0050] In this embodiment, the locking assembly 32 includes a locking plate 321 and at least two locking screws 322. The locking plate 321 is attached to one guiding ridge 33, and both of the two locking screws 322 are threadedly connected to the lifting table 31 and abut against the locking plate 321. Due to the presence of the locking plate 321, the abutting force of the locking screws 322 is evenly distributed on the guiding ridge 33, which can not only ensure that the two guiding ridges 33 have sufficient clamping force but also make the clamping force evenly distributed, avoiding damaging the sliding rail 5 or the guiding ridge 33.
[0051] Furthermore, the lifting table 31 further includes a connecting ridge 35, which is arranged at intervals with one guiding ridge 33. The locking plate 321 is arranged between the connecting ridge 35 and one guiding ridge 33. At least two locking screws 322 pass through the connecting ridge 35 and are threadedly connected to the connecting ridge 35, and at least two locking screws 322 all abut against the locking plate 321. The arrangement of the connecting ridge 35 facilitates the arrangement of the locking plate 321 and at least two locking screws 322. Moreover, arranging the locking plate 321 between the connecting ridge 35 and one guiding ridge 33 can also hide the locking plate 321 and improve the aesthetics.
[0052] In this embodiment, the lifting mechanism 3 further includes a height adjusting member 36. The height adjusting member 36 is rotatably disposed on the lifting platform 31. A rack 6 is arranged on the slide rail 5 in the vertical direction. A gear 37 is coaxially fixed to the height adjusting member 36, and the gear 37 meshes with the rack 6. The height adjusting member 36 adjusts the height of the lifting platform 31 through the gear 37 and the rack 6. On the one hand, it is convenient for operation and relatively labor-saving. On the other hand, after the pressure of the test probe 411 on the positive electrode 101 of the cylindrical battery cell 100 reaches the requirement, the lifting platform 31 can be temporarily stopped from moving and kept stable, ensuring that the lifting platform 31 does not move when the operator uses the locking component to lock the relative position between the lifting platform 31 and the slide rail 5, so that the pressure of the test probe 411 on the positive electrode 101 of the cylindrical battery cell 100 does not change.
[0053] In this embodiment, the rack 6 is arranged on the end face of the slide rail 5 facing the lifting mechanism 3. An adjustment groove 38 is formed in the vertical direction in the chute 34. The rack 6 extends into the adjustment groove 38. The height adjusting member 36 passes through the lifting platform 31, and a part of the gear 37 is located in the adjustment groove 38 and meshes with the rack 6. The rack 6 does not affect the sliding fit between the slide rail 5 and the chute 34, nor does it affect the locking effect of the locking component on the slide rail 5, and can make the structure more compact, reducing the overall space occupied by the device.
[0054] The above content is only a preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. The content of this specification should not be construed as a limitation to the present invention.
Claims
1. A testing device, characterized in that, Comprising: A bench (1), on which a pressure test piece (2) is arranged, and the pressure test piece (2) is used to carry the cell to be tested; A lifting mechanism (3), the lifting mechanism (3) includes a lifting platform (31), a connecting groove (311) is formed in the lifting platform (31), and the lifting platform (31) is arranged above the pressure test piece (2); A test component (4), including a test probe (41) and a mounting plate (42), the test probe (41) passes through the mounting plate (42) and is connected to the mounting plate (42), a test probe (411) is telescopically arranged on the test probe (41), the mounting plate (42) is detachably arranged in the connecting groove (311), and the test probe (411) can abut against the cell to be tested.
2. The testing device according to claim 1, wherein The thickness of the mounting plate (42) is the same as the depth of the connecting groove (311).
3. The test device according to claim 1, characterized in that, The connecting groove (311) is formed in the bottom surface of the lifting platform (31).
4. The test device according to claim 1, wherein, A plurality of conductive power connection sharp teeth (4111) are arranged at the end of the test probe (411).
5. The test device according to any one of claims 1 to 4, characterized in that, A vertically extending slide rail (5) is arranged on the bench (1), the lifting mechanism (3) further includes a locking component (32), the lifting platform (31) is slidably arranged on the slide rail (5), and the locking component (32) is configured to lock the relative position between the lifting platform (31) and the slide rail (5).
6. The test device according to claim 5, wherein, The lifting platform (31) includes two spaced guiding ridges (33), a sliding groove (34) is formed between the two guiding ridges (33), the slide rail (5) is slidably matched with the sliding groove (34), and the locking component (32) can push against at least one of the guiding ridges (33) to reduce the distance between the two guiding ridges (33).
7. The test device according to claim 6, wherein The width of the sliding groove (34) gradually decreases in the direction from the groove bottom to the groove opening, and the width of the slide rail (5) matches the sliding groove (34).
8. The testing device according to claim 6, characterized in that, The locking component (32) includes a locking plate (321) and at least two locking screws (322), the locking plate (321) is attached to one of the guiding ridges (33), and the two locking screws (322) are both threadedly connected to the lifting platform (31) and abut against the locking plate (321).
9. The testing device according to claim 6, wherein The lifting mechanism (3) further includes a height adjusting member (36), the height adjusting member (36) is rotatably arranged on the lifting platform (31), a rack (6) is arranged on the slide rail (5) in the vertical direction, a gear (37) is coaxially fixed to the height adjusting member (36), and the gear (37) meshes with the rack (6).
10. The testing device according to claim 9, characterized in that, The rack (6) is arranged on the end face of the slide rail (5) facing the lifting mechanism (3), an adjusting groove (38) is formed in the sliding groove (34) in the vertical direction, the rack (6) extends into the adjusting groove (38), the height adjusting member (36) passes through the lifting platform (31), and the gear (37) is partially located in the adjusting groove (38) and meshes with the rack (6).