A lithium-ion cylindrical battery formation and capacity testing tool

Abstract

The present invention relates to a formation and grading test tool for a lithium-ion cylindrical battery, which includes an OCV tester, a base, a cover plate and a lifting mechanism. The lifting mechanism is arranged on the base, the cover plate is arranged above the base, and the cover plate is connected to the lifting mechanism; a plurality of battery slots are provided on the base, a first contact piece is provided at the bottom of each battery slot, a second contact piece is provided at a position corresponding to each first contact piece on the cover plate, and the first contact piece and the second contact piece are respectively electrically connected to two signal connection terminals of the OCV tester through a collection wire. The beneficial effects of the present invention are: it can perform batch operations, reduce working time, save labor costs and improve work efficiency.

Description

Technical Field

[0001] The present invention relates to the field of lithium-ion batteries, and particularly to a formation and grading test tool for lithium-ion cylindrical batteries. Background Art

[0002] After the production of lithium-ion cylindrical batteries, it is generally necessary to test the voltage and internal resistance. The traditional test method is to test one by one, and the efficiency of single test is relatively low. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a formation and grading test tool for lithium-ion cylindrical batteries to overcome the deficiencies in the above-mentioned prior art.

[0004] The technical solution of the present invention to solve the above technical problem is as follows: A formation and grading test tool for lithium-ion cylindrical batteries includes an OCV tester, a base, a cover plate and a lifting mechanism. The lifting mechanism is arranged on the base, the cover plate is arranged above the base, and the cover plate is connected to the lifting mechanism; a plurality of battery slots are provided on the base, a first contact piece is provided at the bottom of each battery slot, a second contact piece is provided at a position corresponding to each first contact piece on the cover plate, and the first contact piece and the second contact piece are respectively electrically connected to two signal connection terminals of the OCV tester through a collection wire.

[0005] The beneficial effect of the present invention is:

[0006] During use, the lithium-ion cylindrical battery to be tested is inserted into the battery slot, and one of the poles of the lithium-ion cylindrical battery to be tested is brought into contact with the first contact piece. The lifting mechanism is used to make the cover plate descend until the second contact piece on the cover plate is brought into contact with the other pole of the lithium-ion cylindrical battery to be tested, and the test starts. The result is obtained through the OCV tester. It can perform batch operations, reduce working time, save labor costs and improve work efficiency.

[0007] On the basis of the above technical solution, the present invention can be further improved as follows.

[0008] Further, the lifting mechanism is one of a cylinder, a hydraulic cylinder, an electric push rod or a screw rod guide rail mechanism.

[0009] Further, the number of the lifting mechanisms is two, and the two lifting mechanisms are arranged side by side on the same side of the base.

[0010] The beneficial effect of adopting the above two improvements is: It can effectively complete the lifting of the cover plate, with a simple structure and good stability.

[0011] Further, the depth of the battery slot is less than the length of the battery to be tested.

[0012] Further, it further includes two sensors and an alarm device. The two sensors are respectively used to sense the strokes of the two lifting mechanisms when driving the cover plate to lift, and the alarm device is electrically connected to the sensors.

[0013] The beneficial effect of the above further aspect is that it can monitor whether the strokes of the lifting mechanisms are the same, and can give an alarm prompt when they are different, so as to ensure effective contact between the second contact piece on the cover plate and the lithium-ion cylindrical battery to be tested.

[0014] Further, it further includes a relay, and the relay is arranged on the acquisition line connecting the OCV tester and the second contact piece.

[0015] Further, the number of battery slots is 6, 9, 12, 15 or 18.

[0016] Further, it further includes a wire harness box. Each second contact piece is electrically connected to the wire harness box through an acquisition line, and the wire harness box is electrically connected to the relay through an acquisition line.

[0017] Further, the first contact piece is a negative contact piece matching the negative electrode post of the battery to be tested; the second contact piece is a positive contact piece matching the positive electrode post of the battery to be tested.

[0018] Further, it further includes a computer, and the OCV tester is electrically connected to the computer.

[0019] The beneficial effect of the above further aspect is that it is convenient to record the test results, so as to understand the test situation later. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of the lithium-ion cylindrical battery formation and grading test tool described in the present invention.

[0021] In the drawings, the list of components represented by each reference numeral is as follows:

[0022] 1. OCV tester, 2. Base, 210. Battery slot, 3. Cover plate, 4. Lifting mechanism, 410. Cylinder, 5. Computer, 6. Wire harness box, 7. Relay. Detailed Embodiments

[0023] The principles and features of the present invention will be described below with reference to the drawings. The examples given are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0024] As Figure 1As shown in the figure, a formation and grading test tool for a lithium-ion cylindrical battery includes an OCV tester 1, a base 2, a cover plate 3, and a lifting mechanism 4. Among them, a plurality of battery slots 210 are provided on the base 2, and the number of battery slots 210 is greater than or equal to 2, such as 6, 9, 12, 15, or 18. The diameter of the battery slot 210 is equal to or slightly larger than the diameter of the cylindrical battery to be tested. A first contact piece (not shown in the figure) is provided at the bottom of each battery slot 210, and the first contact piece is used to contact one of the poles of the cylindrical battery to be tested. The cover plate 3 is arranged above the base 2, and a second contact piece (not shown in the figure) is provided at a position corresponding to each first contact piece on the cover plate 3, and the second contact piece is used to contact the other pole of the cylindrical battery to be tested. The lifting mechanism 4 is arranged on the base 2, and the lifting mechanism 4 is connected to the cover plate 3 to realize the mutual approach and separation of the second contact piece and the first contact piece. The first contact piece is electrically connected to one of the two signal connection terminals of the OCV tester 1 through a collection wire, and the second contact piece is electrically connected to the other of the two signal connection terminals of the OCV tester 1 through a collection wire.

[0025] In this embodiment, the above solution can be further optimized as follows:

[0026] The lifting mechanism 4 is one of a cylinder, a hydraulic cylinder, an electric push rod, or a screw rod guide mechanism, preferably a cylinder. The specific number of cylinders can be 2. The cylinder body end of the cylinder is connected to the base 2, and the telescopic end of the cylinder is connected to the cover plate 3. During the telescopic process of the cylinder, the cover plate 3 and the base 2 will be urged to approach and separate from each other, indirectly realizing the mutual approach and separation between the second contact piece and the first contact piece. The depth of the battery slot 210 is less than the length of the battery to be tested, which is convenient for taking and placing the battery.

[0027] In addition, the formation and grading test tool for the lithium-ion cylindrical battery further includes two sensors and an alarm device. In theory, when selecting the model of the lifting mechanism 4, the models of all the lifting mechanisms 4 are the same, which means that all the lifting mechanisms 4 can be lifted and lowered synchronously. However, in actual operation, all the lifting mechanisms 4 may not be able to be lifted and lowered synchronously when they are used for the first time. Therefore, two sensors are provided to respectively sense the stroke of the two lifting mechanisms 4 when driving the cover plate 3 to lift and lower. The alarm device is electrically connected to the sensors, and all the sensors will transmit the sensed information to the alarm device. The alarm device judges whether to give an alarm prompt according to the received information. If the strokes are the same, no alarm prompt will be given; otherwise, an alarm prompt will be given.

[0028] The formation and grading test tool for lithium-ion cylindrical batteries further includes a relay, which is arranged on the acquisition line connecting the OCV tester 1 and the second contact. Preferably, the first contact is a negative contact matching the negative electrode post of the battery under test, and the second contact is a positive contact matching the positive electrode post of the battery under test. Therefore, the first contact is electrically connected to the negative signal terminal of the OCV tester 1 through the negative voltage and internal resistance acquisition line, and the second contact is electrically connected to the signal input terminal of the relay through the positive voltage and internal resistance acquisition line. The signal output terminal of the relay is electrically connected to the positive signal terminal of the OCV tester 1 through the positive voltage and internal resistance acquisition line. The formation and grading test tool for lithium-ion cylindrical batteries further includes a computer 5. The signal output terminal of the OCV tester 1 is electrically connected to the signal input terminal of the computer 5. After receiving the data transmitted by the OCV tester 1, the computer 5 can process the data and present it in the form of a table.

[0029] The formation and grading test tool for lithium-ion cylindrical batteries further includes a wire harness box 6. Each second contact is electrically connected to the input terminal of the wire harness box 6 through the positive voltage and internal resistance acquisition line, and the output terminal of the wire harness box 6 is electrically connected to the signal input terminal of the relay through the positive voltage and internal resistance acquisition line.

[0030] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A formation and grading test tool for a lithium-ion cylindrical battery, characterized in that, It includes an OCV tester (1), a base (2), a cover plate (3) and a lifting mechanism (4). The lifting mechanism (4) is arranged on the base (2). The cover plate (3) is arranged above the base (2), and the cover plate (3) is connected to the lifting mechanism (4). A plurality of battery slots (210) are provided on the base (2). A first contact piece is provided at the bottom of each battery slot (210). A second contact piece is provided at a position on the cover plate (3) corresponding to each first contact piece. The first contact piece and the second contact piece are respectively electrically connected to two signal connection terminals of the OCV tester (1) through a collection wire. The depth of the battery slot (210) is less than the length of the battery to be tested. The lifting mechanism (4) is one of a cylinder, a hydraulic cylinder, an electric push rod or a screw guide rail mechanism. The number of the lifting mechanisms (4) is two, and the two lifting mechanisms (4) are arranged side by side on the same side of the base (2). The test tool further includes two sensors and an alarm device. The two sensors are respectively used to sense the stroke of the two lifting mechanisms (4) when driving the cover plate (3) to lift. The alarm device is electrically connected to the sensors. The sensors will transmit the sensed information to the alarm device. The alarm device judges whether to give an alarm prompt according to the received sensed information. If the strokes are the same, no alarm prompt is given; otherwise, an alarm prompt is given.

2. The formation and grading test tool for a lithium-ion cylindrical battery according to claim 1, wherein It further includes a relay. The relay is arranged on the collection wire connecting the OCV tester (1) and the second contact piece.

3. The formation and grading test tool for a lithium-ion cylindrical battery according to claim 2, characterized in that The number of the battery slots (210) is 6, 9, 12, 15 or 18.

4. A formation and grading test tool for a lithium-ion cylindrical battery according to claim 3, characterized in that It further includes a wire harness box (6). Each second contact piece is electrically connected to the wire harness box (6) through a collection wire. The wire harness box (6) is electrically connected to the relay through a collection wire.

5. A formation and grading test tool for a lithium-ion cylindrical battery according to claim 1, characterized in that, The first contact piece is a negative contact piece matching the negative terminal of the battery to be tested; the second contact piece is a positive contact piece matching the positive terminal of the battery to be tested.

6. A formation and grading test tool for a lithium-ion cylindrical battery according to claim 1, characterized in that It further includes a computer (5). The OCV tester (1) is electrically connected to the computer (5).

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