Square lithium battery OCV test positioning cover

Abstract

The utility model discloses a square lithium battery OCV test positioning cover which comprises an integrally-formed cover body, a through groove is formed in the upper portion of the cover body, limiting grooves are formed in the two sides of the inner wall of the through groove, two movable blocks are connected in the through groove in a sliding mode, the two sides of each movable block are fixedly connected with limiting blocks matched with the limiting grooves, and the top of each movable block is fixedly connected with a probe column. A probe hole is formed in the probe column, a pole groove matched with a lithium battery pole is formed in the bottom of the movable block, a contact is arranged in the center of the pole groove, and a conductive rod communicated with the contact is arranged at the bottom of the probe column. The OCV test positioning cover has the advantages that the cover body is matched with the movable block in sliding connection, so that OCV tests can be carried out on batteries of different models and specifications, the application range of the OCV test positioning cover is expanded, the flexibility is high, a probe test pen does not need to be manually positioned, the accuracy of positioning positive and negative pole columns is ensured, the OCV test efficiency of the lithium battery is improved, and the cost is reduced. And the problem that the positive and negative probes are easily mixed is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of square lithium battery performance detection auxiliary devices, and particularly relates to an OCV positioning cover for a square lithium battery. Background Art

[0002] After lithium batteries are formed, capacity divided, coded, and shelled, they need to be subjected to OCV (Open Circuit Voltage) testing. The OCV test can obtain parameters such as current, voltage, and capacity of square lithium batteries, so that lithium batteries with unqualified electrochemical parameters can be sorted out to ensure the quality of the finished battery.

[0003] The OCV test equipment is a comprehensive data collection and feedback precision testing equipment for finished batteries. It mainly measures various parameters of the battery by pressing the probes connected to the tester on the positive and negative poles of the battery. It is necessary to manually position the probe test pen and hold the probe by hand to make the probe contact with the positive and negative poles of the battery to complete the OCV test. The positioning of the probe is relatively troublesome, and each lithium battery needs to repeat the same positioning operation, resulting in low test efficiency and low flexibility. In addition, the positive and negative test probes are easily confused during the test, resulting in incorrect connection between the positive and negative poles and the test probes. Utility Model Content

[0004] The purpose of the utility model is to provide a square lithium battery OCV test positioning cover to solve the problems in the prior art of requiring manual positioning of the probe test pen, which is cumbersome to position the probe, has low test efficiency, low flexibility, and is easy to confuse the positive and negative test probes.

[0005] To achieve the above-mentioned purpose, the technical solution of the utility model is: a square lithium battery OCV test positioning cover, including an integrally formed cover body, a through groove is provided on the upper part of the cover body, and limit grooves are provided on the inner walls on both sides of the through groove. Two movable blocks are slidably connected in the through groove, and the two sides of the movable block are fixedly connected with limit blocks adapted to the limit grooves. The top of the movable block is fixedly connected with a probe column, and a probe hole is provided in the probe column. The bottom of the movable block is provided with a pole groove adapted to the lithium battery pole, and a contact is provided in the center of the pole groove. The bottom of the probe column is provided with a conductive rod connected to the contact.

[0006] Preferably, a probe is movably connected in the probe hole, an end of the probe is fixedly connected to a wire, and the other end of the wire is fixedly connected to a wiring terminal.

[0007] Preferably, a fixing hole is provided on the side of the cover body opposite to the limiting groove, and a top screw is connected to the inner thread of the fixing hole.

[0008] Preferably, a positive electrode mark and a negative electrode mark are provided on the top edge of the cover.

[0009] The advantages of the present invention are:

[0010] 1. The cover body cooperates with the sliding movable block to perform OCV testing on batteries of different models and specifications, expanding the application range of the OCV test positioning cover. It is highly flexible. The cover body can be buckled on the top of the battery as a whole. The position of the movable block is adjusted so that the terminal slot covers the positive and negative terminals of the battery. The contacts are in contact with the tops of the positive and negative terminals. The probes cooperate with the wires and are connected to the OCV test instrument through the terminal blocks to perform OCV testing on lithium batteries to obtain various parameters of the lithium battery.

[0011] 2. The cover snaps onto the top of the battery, and the movable block is adjusted to align the contacts with the positive and negative electrodes of the lithium battery. After the movable block is fixed with the screw, there is no need to manually position the test probe, ensuring accurate positioning of the positive and negative electrodes and improving the efficiency of lithium battery OCV testing.

[0012] 3. The positive and negative pole markings on the cover make it easy for staff to distinguish the positive and negative poles of the movable block, thereby avoiding the problem of confusion between the positive and negative probes. Staff can easily buckle the cover on the battery and ensure that the positive and negative movable blocks are accurately in contact with the positive and negative poles of the lithium battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the present utility model.

[0014] Figure 2 It is a schematic diagram of the three-dimensional structure of the bottom of the utility model.

[0015] Figure 3 It is a schematic cross-sectional structural diagram of the present utility model.

[0016] Figure 4 It is a structural schematic diagram of the cover body of the utility model.

[0017] Figure 5 It is a structural diagram of the movable block of the utility model.

[0018] Figure 6 For this utility model Figure 1 Schematic diagram of the partially enlarged structure of part A in the middle.

[0019] Figure 7 For this utility model Figure 3 Schematic diagram of the partially enlarged structure of part B in the middle.

[0020] The meanings of the reference numerals are as follows: cover (1), through slot (2), limit slot (3), movable block (4), limit block (5), probe column (6), probe hole (7), pole slot (8), contact (9), conductive rod (10), probe (11), wire (12), terminal (13), fixing hole (14), top screw (15), positive electrode mark (16), negative electrode mark (17). DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and specific implementation methods.

[0022] like Figures 1 to 7 The square lithium battery OCV test positioning cover shown in the figure includes an integrally formed cover body 1, a through slot 2 is provided on the upper part of the cover body 1, and limit slots 3 are provided on the inner walls on both sides of the through slot 2. Two movable blocks 4 are slidably connected in the through slot 2, and limit blocks 5 that are adapted to the limit slots 3 are fixedly connected on both sides of the movable block 4. A probe column 6 is fixedly connected to the top of the movable block 4, and a probe hole 7 is provided in the probe column 6. The bottom of the movable block 4 is provided with a pole slot 8 that is adapted to the lithium battery pole, and a contact 9 is provided in the center of the pole slot 8. The bottom of the probe column 6 is provided with a conductive rod 10 connected to the contact 9.

[0023] In order to facilitate the connection between the contact 9 in the cover body 1 and the OCV tester, a probe 11 is movably connected in the probe hole 7. The end of the probe 11 is fixedly connected to a wire 12, and the other end of the wire 12 is fixedly connected to a terminal 13. The OCV test of the battery can be started by inserting the terminal 13 into the OCV tester.

[0024] In order to facilitate the OCV testing of the same batch of lithium batteries and fix the movable block 4 after positioning, a fixing hole 14 is opened on the side of the cover body 1 opposite to the limiting groove 3. The fixing hole 14 is internally threaded with a top screw 15, and the movable block 4 is fixed by screwing the top screw 15.

[0025] In order to prevent the staff from confusing the probes of the OCV tester and ensure that the positive and negative poles are not incorrectly connected, a positive pole mark 16 and a negative pole mark 17 are provided on the top edge of the cover body 1.

[0026] The working process of the utility model is as follows: first, when it is necessary to perform OCV test on the square lithium batteries of the same batch, according to the positive and negative poles of the battery, the positive pole mark 16 on the cover body 1 corresponds to the positive pole, and the negative pole mark 17 corresponds to the negative pole. The cover body 1 is buckled on the top cover of the lithium battery, and the position of the movable block 4 is adjusted so that the pole groove 8 at the bottom of the movable block 4 is against the pole of the lithium battery and the contact 9 is ensured to be in contact with the pole of the battery. Secondly, when the movable block 4 is positioned, the movable block 4 is fixed by screwing the top screw 15 for OCV test. The positioning cover can cope with the test of a whole batch of lithium batteries, and there is no need to adjust the movable block 4 during the test process; again, the probe 11 connected to the wire 12 is inserted into the probe hole 7 in the probe column 6, the probe 11 contacts the conductive rod 10, and the terminal 13 is plugged into the OCV test instrument; finally, the various parameters of the square lithium battery are obtained through the test instrument, and the qualified lithium batteries are sorted out to ensure the quality of the finished battery products, and the measured data are counted and recorded. It is only necessary to repeatedly buckle the cover body 1 on the top of the battery top cover to perform OCV testing on this batch of lithium batteries.

[0027] The above is only a preferred example of the present invention, and the technical solution of the present invention is not limited thereto. It should be pointed out that for ordinary technicians in this field, under the technical inspiration provided by the present invention, as common knowledge in the field, other equivalent variations and improvements can be made, which should also be regarded as the scope of protection of the present invention.

Claims

1. A square lithium battery OCV test positioning cover, characterized by: The invention comprises an integrally formed cover body (1), wherein a through slot (2) is provided on the upper part of the cover body (1), and limiting slots (3) are provided on the inner walls on both sides of the through slot (2), two movable blocks (4) are slidably connected in the through slot (2), and limiting blocks (5) adapted to the limiting slots (3) are fixedly connected to both sides of the movable block (4), a probe column (6) is fixedly connected to the top of the movable block (4), and a probe hole (7) is provided in the probe column (6), and a pole slot (8) adapted to the pole of a lithium battery is provided at the bottom of the movable block (4), a contact (9) is provided at the center of the pole slot (8), and a conductive rod (10) connected to the contact (9) is provided at the bottom of the probe column (6).

2. The square lithium battery OCV test positioning cover according to claim 1, characterized in that: A probe (11) is movably connected in the probe hole (7), an end of the probe (11) is fixedly connected to a wire (12), and the other end of the wire (12) is fixedly connected to a wiring terminal (13).

3. The square lithium battery OCV test positioning cover according to claim 2, characterized in that: A fixing hole (14) is provided on the side of the cover body (1) opposite to the limiting groove (3), and a top screw (15) is connected to the inner thread of the fixing hole (14).

4. The square lithium battery OCV test positioning cover according to claim 3, characterized in that: A positive electrode mark (16) and a negative electrode mark (17) are provided at the top edge of the cover body (1).

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