OCV detection device for cylindrical battery cell

Abstract

The utility model relates to the technical field of battery cell detection, and provides an OCV detection device for a cylindrical battery cell, which comprises a rack, two lower probe seats, two upper probe seats and an alternating mechanism, and is characterized in that the lower probe seats are fixedly arranged on the rack; the upper probe seats are arranged on the rack in a sliding manner, and the two upper probe seats are in one-to-one correspondence with the two lower probe seats; the alternating mechanism comprises two racks and a gear, and the two racks are fixedly arranged on the two upper probe seats respectively; the gear is rotationally arranged on the machine frame and located between the two racks, and the gear is meshed with the two racks. According to the utility model, the two upper probe seats, the two lower probe seats and the alternating mechanism are arranged, so that two battery cells can be alternately detected, the detection efficiency of the battery cells is greatly improved, and the detection device meets the detection requirements of a large batch of battery cells.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of battery cell detection, especially to a cylindrical battery cell OCV detection device. BACKGROUND

[0002] In the research and development process of cylindrical batteries, the charge and discharge performance of the batteries needs to be tested and verified, and OCV detection is one of the tests for measuring the performance of battery cells, which can specifically test the open-circuit voltage, AC internal resistance and shell voltage of single batteries.

[0003] The utility model discloses a kind of battery cell OCV detection devices with the utility model number CN218938455U, it includes base, base is connected with support plate, support plate is connected with mounting block, mounting block is connected with lifting cylinder, lifting cylinder is connected with foot valve outside by air pipe, the piston rod of lifting cylinder is connected with lifting plate, support plate is equipped with the guide assembly for guiding lifting plate to lift, lifting plate is slidably connected with clamping assembly, clamping assembly is symmetrically equipped with two on lifting plate, two clamping assemblies are respectively clamped with the positive and negative probes of OCV tester.

[0004] In the above technical solution, in order to improve the detection efficiency of battery cell, lifting cylinder, guide assembly and clamping assembly are provided to drive the positive and negative probes to quickly resist the electrode of battery cell. However, when batch testing of battery cell is carried out, the operation efficiency is relatively low, which cannot meet the detection needs of large quantities of battery cell. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model provides a kind of cylindrical battery cell OCV detection device, which can improve the detection efficiency of battery cell and meet the detection needs of large quantities of battery cell.

[0006] The technical scheme of the utility model is as follows: the utility model provides a kind of cylindrical battery cell OCV detection device, which includes a rack, two lower probe bases, two upper probe bases and an alternating mechanism, wherein,

[0007] The lower probe base is fixedly arranged on the rack;

[0008] The upper probe base is slidably arranged on the rack, and the two upper probe bases correspond to the two lower probe bases one by one;

[0009] The alternating mechanism includes two racks and a gear, the two racks are fixedly arranged on the two upper probe bases respectively; the gear is rotatably arranged on the rack and located between the two racks, and the gear is engaged with the two racks.

[0010] On the basis of the above technical scheme, preferably, the rack includes a frame body and a screw, wherein,

[0011] The rack body is provided with a threaded hole;

[0012] The screw is connected in the threaded hole through thread cooperation, the gear is sleeved on the screw and is rotationally connected with the screw.

[0013] More preferably, the depth of the threaded hole is not less than the length of the screw, so that the screw can resist and fix the gear.

[0014] As the further preferred in the claims or the description, the upper probe base is provided with a connecting hole for connecting and fixing two upper probe bases.

[0015] On the basis of the above technical scheme, preferably, the rack comprises two end plates and a plurality of slide columns, wherein,

[0016] The two end plates are parallel and spaced apart, and the lower probe base is fixedly arranged on one of the end plates;

[0017] The slide columns are fixedly arranged between the two end plates, a plurality of the slide columns are parallel and spaced apart, and the upper probe base is slidingly arranged on the slide columns.

[0018] More preferably, the two upper probe bases are not connected with the same slide column.

[0019] More preferably, each upper probe base is slidingly arranged on a plurality of slide columns.

[0020] More preferably, the axes of a plurality of slide columns connected with the same upper probe base are not in the same plane.

[0021] On the basis of the above technical scheme, preferably, the upper probe base comprises a slide carriage, a probe, a nut and a spring, wherein,

[0022] The slide carriage is slidingly arranged on the rack;

[0023] The probe is penetratingly and slidingly arranged in the slide carriage;

[0024] The nut and the spring are both fixedly arranged on the probe and respectively abut against the side of the slide carriage away from the lower probe base and the side of the slide carriage close to the lower probe base.

[0025] On the basis of the above technical scheme, preferably, a driving cylinder is further included, the driving cylinder is fixedly arranged on the rack, and the output end of the driving cylinder is fixedly connected with one of the upper probe bases.

[0026] The OCV detection device for cylindrical battery cells has the following beneficial effects relative to the prior art:

[0027] (1) by setting two upper probe seat, two lower probe seat and alternate mechanism, can be alternately detected two electric core, greatly improve the detection efficiency of electric core, and make this detection device meet the detection demand of large batch electric core;

[0028] (2) by setting screw, by its rotation with gear and resistance cooperation, can make two upper probe seat move alternately or fixedly, by setting connecting hole, can let two upper probe seat move synchronously, make this detection device adapt to different use conditions. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical scheme in the embodiment of the present application or prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the premise.

[0030] Figure 1 It is a perspective view of the OCV detection device for cylindrical electric core of the present application;

[0031] Figure 2 It is a rear view of the alternate mechanism in the OCV detection device for cylindrical electric core of the present application;

[0032] Figure 3 It is a sectional view of the screw in the OCV detection device for cylindrical electric core of the present application;

[0033] Figure 4 It is a perspective view of the upper probe seat in the OCV detection device for cylindrical electric core of the present application.

[0034] Among them: 1, rack; 11, frame; 12, screw; 111, end plate; 112, slide column; 101, threaded hole; 2, lower probe seat; 3, upper probe seat; 31, slide; 32, probe; 33, nut; 34, spring; 301, connecting hole; 4, alternate mechanism; 41, rack; 42, gear; 5, drive cylinder. DETAILED DESCRIPTION

[0035] The technical scheme in the present application will be described clearly and completely in combination with the specific implementation manner of the present application, obviously, the described implementation manner is only a part of the implementation manner of the present application, rather than all the implementation manner. Based on the implementation manner in the present application, all other implementation manners obtained by those skilled in the art without creative labor belong to the protection scope of the present application.

[0036] As Figures 1-4 shown, the utility model discloses a cylindrical battery OCV detection device, including frame 1, lower probe seat 2, upper probe seat 3, alternate mechanism 4 and drive cylinder 5.

[0037] As Figure 1 shown, lower probe seat 2 is fixedly arranged on frame 1, upper probe seat 3 is slidably arranged on frame 1, and upper probe seat 3 corresponds to two lower probe seats 2 one by one, drive cylinder 5 is fixedly arranged on frame 1, and the output end of drive cylinder 5 is fixedly connected with upper probe seat 3, when the battery is placed on lower probe seat 2, the electrode of the lower end of the battery is abutted on the probe assembly on lower probe seat 2, at this time, the probe assembly in upper probe seat 3 is abutted on the electrode of the upper end of the battery by driving upper probe seat 3 to move downwards, so that the battery is electrically connected with the detection equipment connected with the battery assembly, to realize the detection of the performance of the battery.

[0038] In order to improve the detection efficiency of the battery, two lower probe seats 2 and two upper probe seats 3 can be arranged, and the two lower probe seats 2 and the two upper probe seats 3 correspond one by one, so that two batteries can be detected at the same time.

[0039] The feeding and discharging operation before and after the detection of the battery occupies a certain time, which affects the detection efficiency of the battery, in order to improve the detection efficiency of the battery, the alternate mechanism 4 is arranged, and the alternate mechanism 4 includes two racks 41 and a gear 42, as Figure 2 shown, two racks 41 are fixedly arranged on two upper probe seats 3 respectively, the gear 42 is rotatably arranged on frame 1 and located between the two racks 41, and the gear 42 is engaged with the two racks 41, when one battery is fed and the upper probe seat 3 above the battery is moved downwards, the gear 42 and the rack 41 are matched to drive the other upper probe seat 3 to move upwards to discharge the other battery, so that the two batteries in the device can be detected alternately, and the detection efficiency of the battery is effectively improved, at the same time, the output end of the drive cylinder 5 only needs to be fixedly connected with one of the upper probe seats 3.

[0040] As Figure 3 shown, frame 1 includes a frame body 11 and a screw 12, a threaded hole 101 is formed in the frame body 11, the screw 12 is connected in the threaded hole 101 through thread cooperation, the gear 42 is sleeved on the screw 12 and rotatably connected with the screw 12, so as to realize the rotation of the gear 42 on the frame 1.

[0041] Preferably, the depth of the threaded hole 101 is not less than the length of the screw 12, that is, the screw rod of the screw 12 can be completely inserted into the threaded hole 101, as Figure 3As shown, when the screw 12 moves to the right, the screw 12 can resist the fixed gear 42, so that the fixed gear 42 cannot rotate, thereby limiting the two upper probe bases 3 when the device is limited.

[0042] The screw 12 is connected with the frame body 11 through threaded cooperation, and the gear 42 is sleeved on the screw 12. The gear 42 can be disassembled from the two racks 41 by disassembling the screw 12, so that the two groups of upper probe bases 3 are independent of each other. In addition, a connecting hole 301 can be formed on the upper probe base 3. When the gear 42 is disassembled, the connecting hole 301 on the two upper probe bases 3 is connected and fixed by using other mechanisms, so that the two upper probe bases 3 are connected and fixed, and the effect of synchronous up-down movement is realized, so that the device is suitable for different working conditions.

[0043] The frame body 11 includes two end plates 111 and a plurality of slide columns 112, as shown in the figure. Figure 1 As shown, the two end plates 111 are parallel and spaced apart, the lower probe base 2 is fixedly arranged on one of the two end plates 111, and the slide column 112 is fixedly arranged between the two end plates 111. The plurality of slide columns 112 are parallel and spaced apart, and the upper probe base 3 is slidably arranged on the slide column 112, so that the corresponding upper probe base 3 and lower probe base 2 can be close to and away from each other to detect or load and unload the battery cell.

[0044] The two upper probe bases 3 are not connected with the same slide column 112, that is, the slide columns 112 connected with the two upper probe bases 3 are independent of each other and do not interfere with each other, so as to avoid interference and collision between the two upper probe bases 3 during sliding.

[0045] In order to improve the sliding stability of the upper probe base 3, each upper probe base 3 needs to be slidably arranged on a plurality of slide columns 112 to avoid rotation of the upper probe base 3 during sliding.

[0046] In some embodiments, each upper probe base 3 needs to be connected with at least three slide columns 112, so that the sliding effect of the upper probe base 3 is more stable. At this time, the axes of the plurality of slide columns 112 connected with the same upper probe base 3 should not be in the same plane.

[0047] As shown in the figure, Figure 4As shown, the upper probe seat 3 comprises a sliding frame 31, a probe 32, a nut 33 and a spring 34, the sliding frame 31 is slidingly arranged on the rack 1, the probe 32 is penetratingly and slidingly arranged in the sliding frame 31, the nut 33 and the spring 34 are both fixedly arranged on the probe 32 and abut against the side of the sliding frame 31 away from the lower probe seat 2 and the side of the sliding frame 31 close to the lower probe seat 2 respectively, when the driving cylinder 5 drives the sliding frame 31 to move downwards, the probe 32 can move downwards and abut against the electrode on the upper end of the battery cell, since the spring 34 on the probe 32 abuts against the bottom side of the sliding frame 31, when the distance of the downward movement of the upper probe seat 3 is large, the spring 34 can be contracted to make the probe 32 move upwards by a distance, so as to avoid the damage of the probe 32 or the battery cell.

[0048] The structure of the lower probe seat 2 is the same as that of the upper probe seat 3, in addition, a clamp for limiting the battery cell can be arranged on the lower probe seat 2.

[0049] The use method of the OCV detection device for cylindrical battery cell is as follows:

[0050] As shown, Figure 1 First, the probe 32 in the upper probe seat 3 and the lower probe seat 2 is electrically connected with the detection equipment, then the output end of the driving cylinder 5 is controlled to contract, the first battery cell is placed on the lower probe seat 2 on the left, then the output end of the driving cylinder 5 is controlled to elongate, the lower probe seat 2 on the left is driven to move downwards and abut against the upper end of the first battery cell, the first battery cell is detected, at the same time, the second battery cell is placed on the lower probe seat 2 on the right, finally, the output end of the driving cylinder 5 is controlled to contract, the upper probe seat 3 on the left is driven to ascend and the upper probe seat 3 on the right is driven to descend, so as to detect the second battery cell, the first battery cell is discharged, and the above-mentioned reciprocating operation can realize the alternate detection operation of batch battery cells.

[0051] The above-mentioned is only the preferred implementation manner of the utility model, and does not use to limit the utility model, any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An OCV detection device for a cylindrical battery cell, characterized by: The utility model relates to a probe alternation mechanism, including rack (1), two lower probe seat (2), two upper probe seat (3) and alternate mechanism (4), wherein, The lower probe seat (2) is fixedly arranged on the rack (1); The upper probe seat (3) is slidably arranged on the rack (1), and the two upper probe seats (3) correspond to the two lower probe seats (2) one by one; The alternate mechanism (4) includes two racks (41) and a gear (42), the two racks (41) are fixedly arranged on the two upper probe seats (3) respectively; the gear (42) is rotatably arranged on the rack (1) and located between the two racks (41), and the gear (42) is engaged with the two racks (41).

2. The OCV detection device for cylindrical battery cells according to claim 1, characterized in that: The rack (1) includes a frame body (11) and a screw (12), wherein, A threaded hole (101) is formed in the frame body (11); The screw (12) is connected in the threaded hole (101) by thread cooperation, the gear (42) is sleeved on the screw (12) and is rotatably connected with the screw (12).

3. The OCV detection device for cylindrical battery cells according to claim 2, characterized in that: The depth of the threaded hole (101) is not less than the length of the screw (12), so that the screw (12) can resist and fix the gear (42).

4. The OCV detection device for cylindrical battery cells according to claim 2 or 3, characterized in that: A connecting hole (301) is formed in the upper probe seat (3) for connecting and fixing the two upper probe seats (3).

5. The OCV detection device for cylindrical battery cells of claim 1, wherein: The rack (1) includes two end plates (111) and a plurality of slide columns (112), wherein, The two end plates (111) are arranged in parallel and at intervals, and the lower probe seat (2) is fixedly arranged on one of the end plates (111); The slide column (112) is fixedly arranged between the two end plates (111), and a plurality of the slide columns (112) are arranged in parallel and at intervals, and the upper probe seat (3) is slidably arranged on the slide column (112).

6. The OCV detection device for cylindrical battery cells of claim 5, wherein: The two upper probe seats (3) are not connected with the same slide column (112).

7. The OCV detection device for cylindrical battery cells of claim 6, wherein: Each upper probe seat (3) is slidably arranged on a plurality of slide columns (112).

8. The OCV detection device for cylindrical battery cells of claim 7, wherein: The axes of a plurality of slide columns (112) connected with the same upper probe seat (3) are not in the same plane.

9. The OCV detection device for cylindrical battery cells of claim 1, wherein: The upper probe seat (3) includes a sliding frame (31), a probe (32), a nut (33) and a spring (34), wherein, The sliding frame (31) is slidably arranged on the rack (1); The probe (32) is slidably arranged in the sliding frame (31); The nut (33) and the spring (34) are fixedly arranged on the probe (32) and abut against the side of the sliding frame (31) away from the lower probe seat (2) and the side of the sliding frame (31) close to the lower probe seat (2) respectively.

10. The OCV detection device for cylindrical battery cells of claim 1, wherein: Further comprising a driving cylinder (5), the driving cylinder (5) is fixedly arranged on the rack (1), and the output end is fixedly connected with one of the upper probe seats (3).

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