Power battery OCV testing device

Abstract

The utility model discloses a power battery OCV testing device, comprising first probe assemblies arranged oppositely and used for connecting two poles of a battery; the first probe assembly comprises a first probe, a first clamping block connected with the first probe, and a first cylinder which is connected with the first clamping block and can move horizontally. The second probe assembly comprises a second probe, a second clamping block connected with the second probe, and a second air cylinder which is connected with the second clamping block and can move up and down; according to the utility model, the cylinder drives the probe to do reciprocating motion, the automatic contact between the probe and the battery is realized under the condition that the battery is not moved, and the problems of high labor cost and low efficiency of manual blanking and sorting in the prior art are solved. The device can be directly installed above a battery conveying line, OCV testing is carried out while the batteries are conveyed, the batteries do not need to be taken down for testing, the overall mechanical automation level of the production line is improved, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of battery OCV detection, in particular to a power battery OCV testing device. Background Art

[0002] In the production process of aluminum shell power batteries, the battery OCV test is used to evaluate the battery's discharge performance, internal resistance, self-discharge rate and other indicators to determine whether the battery's performance meets the requirements. The current OCV test is mainly a semi-automatic test. Workers manually place the battery in the test device, and the probes of the test device are abutted against the battery's outer shell and positive and negative ears to perform an OCV test on the battery. The battery is then manually unloaded and sorted. Therefore, how to provide a battery OCV test device and a test method thereof to better cooperate with the battery for OCV testing, thereby improving the overall mechanical automation level of the equipment, is a problem that needs to be solved at present. Utility Model Content

[0003] The purpose of the utility model is to provide a power battery OCV testing device to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A power battery OCV testing device, comprising:

[0006] The first probe assembly is arranged opposite to each other and is used to connect the two poles of the battery; the first probe assembly comprises a first probe, a first clamping block connected to the first probe, and a first cylinder connected to the first clamping block and capable of horizontal movement;

[0007] A second probe assembly is used to connect to the battery housing; the second probe assembly includes a second probe, a second clamping block connected to the second probe, and a second cylinder connected to the second clamping block and capable of lifting and lowering;

[0008] The battery is located between two opposite first probes, and the second probe is located above the battery.

[0009] Furthermore, it also includes a frame, which includes a top plate and a layer plate located below the top plate; the second cylinder is arranged on the lower end surface of the top plate, and the first probe assembly is arranged on the upper end surface of the layer plate.

[0010] Furthermore, the layer plate includes a left layer plate and a right layer plate located in the same plane, and a channel for the battery conveying line to pass through is reserved between the left layer plate and the right layer plate.

[0011] Furthermore, it also includes a tester placed above the top plate.

[0012] Furthermore, the first probe assembly also includes a bottom plate placed on the layer plate, wherein the upper end of the bottom plate is fixedly connected to the first cylinder, and the lower end of the bottom plate is slidably connected to the layer plate.

[0013] Furthermore, the first probe assembly also includes a first fixing plate for fixing a plurality of first clamping blocks arranged in a row, the first fixing plate is provided with a plurality of notches for accommodating the first clamping blocks, and the first clamping blocks and the first cylinder are connected together through the first fixing plate.

[0014] Furthermore, the second probe assembly also includes a second fixing plate for fixing a plurality of second clamping blocks arranged in a row, the second fixing plate is provided with a plurality of grooves for accommodating the second clamping blocks, and the second clamping blocks are connected to the second cylinder via the second fixing plate.

[0015] Furthermore, the frame includes a vertical pole connecting the layer plate and the top plate, and the vertical pole has a telescopic function.

[0016] Furthermore, it also includes a pressing block arranged below the second clamping block, and the pressing block is made of insulating material.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model uses a cylinder to drive the probe to do reciprocating motion, and realizes automatic contact between the probe and the battery when the battery is placed still, solving the problems of high labor cost and low efficiency of manual unloading and sorting. The device can be directly installed above the battery conveyor line, and the OCV test can be performed while the battery is being conveyed, without removing the battery for testing, which improves the overall mechanical automation level of the production line and improves work efficiency.

[0019] The utility model adopts a pressing block to press the battery on the conveyor line, thereby improving the stability of battery fixation during testing and having high reliability; through the slidable first probe component and the liftable frame, the relative position of the first probe is adjusted to be suitable for measuring batteries of different sizes and models, and has strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 2 It is a side view of the utility model;

[0022] Figure 3 It is a partial enlarged view of the first probe assembly and the second probe assembly in the utility model;

[0023] In the figure: 1-first probe assembly, 11-first probe, 12-first clamping block, 13-first cylinder, 14-bottom plate, 15-first fixed plate, 2-second probe assembly, 21-second probe, 22-pressing block, 23-second cylinder, 24-second clamping block, 25-second fixed plate, 3-frame, 31-top plate, 32-layer plate, 321-left layer plate, 322-right layer plate, 33-vertical pole, 4-tester. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present utility model, it should be noted that the terms "upper", "lower", "left", "right", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0026] See also Figure 1-3 , a power battery OCV test device, comprising a first probe assembly 1, a second probe assembly 2, a frame 3 and a tester 4 arranged relatively, wherein:

[0027] The first probe assembly 1 is used to connect the positive and negative electrodes of the battery; the first probe assembly 1 includes a first probe 11, a first clamping block 12 connected to the first probe 11, and a first horizontally movable cylinder 13 connected to the first clamping block 12; the first clamping block 12 is used to fix the first probe 11 and does not directly contact the battery;

[0028] The second probe assembly 2 is used to connect the battery housing; the second probe assembly 2 includes a second probe 21, a second clamping block 24 connected to the second probe 21, and a second cylinder 23 connected to the second clamping block 24 and capable of lifting and lowering; and also includes a pressing block 22 disposed below the second clamping block 24;

[0029] The battery is located between two opposite first probes 11, and the pressing block 22 is located above the battery. The first probes 11 are driven to move closer to or farther from each other by the movement of the first cylinder 13, so that the two first probes 11 are respectively in contact with the two poles of the battery; the second probe 21 is driven to move downward by the lifting movement of the second cylinder 23 to contact the battery shell, and the pressing block 22 abuts against the battery shell to prevent the battery from rolling and shifting.

[0030] Furthermore, the test device also includes a frame 3, which includes a top plate 31 and a layer plate 32 located below the top plate 31; the second cylinder 23 is arranged on the lower end surface of the top plate 31, and the first probe assembly 1 is arranged on the upper end surface of the layer plate 32. The layer plate 32 includes a left layer plate 321 and a right layer plate 322 located on the same plane, and a channel for the battery conveyor line to pass through is reserved between the left layer plate 321 and the right layer plate 322. The device can be set up above the conveyor line and synchronously tested during the battery conveying process without removing the battery from the conveyor line, which simplifies the test process and improves work efficiency.

[0031] Furthermore, a tester 4 is placed above the top plate 31 for recording and calculating the data collected by the probe and feeding it back to the host computer.

[0032] Furthermore, the first probe assembly 1 also includes a base plate 14 placed on the layer plate 32, the upper end of the base plate 14 is fixedly connected to the first cylinder 13, and the lower end is slidably connected to the layer plate 32, and the sliding direction is the same as the extension and contraction direction of the first cylinder 13. By adjusting the position of the base plate 14 on the layer plate 32, the position size between the two first probes 11 can be adjusted to be suitable for OCV detection of batteries of different sizes and models.

[0033] Furthermore, the first probe assembly 1 further includes a first fixing plate 15 for fixing a plurality of first clamping blocks 12 arranged in a row, and a plurality of notches for accommodating the first clamping blocks 12 are provided on the first fixing plate 15, and the first clamping blocks 12 and the first cylinder 13 are connected together through the first fixing plate 15. The first fixing plate 15 can increase the stability of the connection between the first clamping block 12 and the first cylinder 13; the plurality of first probes 11 and the first clamping blocks 12 arranged in a row are provided, and the OCV data of a plurality of batteries can be measured simultaneously, thereby improving the working efficiency.

[0034] Furthermore, the second probe assembly 2 further includes a second fixing plate 25 for fixing a plurality of second clamping blocks 24 arranged in a row, and a plurality of grooves for accommodating the second clamping blocks 24 are provided on the second fixing plate 25, and the second clamping blocks 24 and the second cylinder 23 are connected together through the second fixing plate 25. The second fixing plate 25 can increase the stability of the connection between the second clamping block 24 and the second cylinder 23; the pressing block 22 is installed at the lower end of the second clamping block 24, and the number of the second probes 21 should correspond to the number of the first probes 11.

[0035] Furthermore, the pressing block 22 is made of insulating material, specifically resin material, which can meet certain rigidity requirements and insulation requirements, and can also avoid damaging the battery surface during testing.

[0036] Furthermore, the rack 3 further includes a vertical rod 33 , which has a telescopic function and can adjust the height of the layer board 32 , thereby adjusting the height of the first probe 11 .

[0037] When the utility model is in use, cylindrical batteries are used for testing. The test device is set up above the battery conveyor line. The height of the vertical pole 33 and the position of the bottom plate 14 on the layer plate 32 are adjusted in advance according to the battery size. The batteries are arranged in rows on the conveyor line and are conveyed to the test station (between the two first probe assemblies 1) and then stop running. The first cylinder 13 drives the first probe 11 to gradually approach and finally contact the two poles of the battery. At the same time, the second cylinder 23 drives the second probe 21 to move downward and gradually approach the battery and connect with its shell. The probe collected data is fed back to the host computer through the tester 4, and then the first cylinder 13 retracts to both sides, and the second cylinder 23 moves upward to make the probe leave the battery surface. The conveyor line continues to run, driving the next batch of batteries into the test station to continue the OCV test.

[0038] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0039] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent changes made according to the scope of the claims of the present application are within the protection scope of the claims of the present application.

Claims

1. A power battery OCV test device, characterized in that: include: A first probe assembly (1) arranged opposite to each other is used to connect two poles of a battery; the first probe assembly (1) comprises a first probe (11), a first clamping block (12) connected to the first probe (11), and a first cylinder (13) connected to the first clamping block (12) and capable of horizontal movement; The second probe assembly (2) is used to connect the battery housing; the second probe assembly (2) comprises a second probe (21), a second clamping block (24) connected to the second probe (21), and a second cylinder (23) connected to the second clamping block (24) capable of lifting and lowering movement; The battery is located between two opposite first probes (11), and the second probe (21) is located above the battery.

2. The power battery OCV testing device according to claim 1, characterized in that: The machine also comprises a frame (3), wherein the frame (3) comprises a top plate (31) and a layer plate (32) located below the top plate (31); the second cylinder (23) is arranged on the lower end surface of the top plate (31), and the first probe assembly (1) is arranged on the upper end surface of the layer plate (32).

3. The power battery OCV testing device according to claim 2, characterized in that: The layer plate (32) comprises a left layer plate (321) and a right layer plate (322) located on the same plane, and a channel for a battery conveying line to pass through is reserved between the left layer plate (321) and the right layer plate (322).

4. The power battery OCV testing device according to claim 2, characterized in that: It also includes a tester (4) placed above the top plate (31).

5. The power battery OCV testing device according to claim 2, characterized in that: The first probe assembly (1) also includes a base plate (14) placed on the layer plate (32), wherein the upper end of the base plate (14) is fixedly connected to the first cylinder (13) and the lower end is slidably connected to the layer plate (32).

6. The power battery OCV testing device according to claim 1, characterized in that: The first probe assembly (1) further comprises a first fixing plate (15) for fixing a plurality of first clamping blocks (12) arranged in a row, the first fixing plate (15) being provided with a plurality of slots for accommodating the first clamping blocks (12), the first clamping blocks (12) and the first cylinder (13) being connected together via the first fixing plate (15).

7. The power battery OCV testing device according to claim 1, characterized in that: It also comprises a second fixing plate (25) for fixing a plurality of second clamping blocks (24) arranged in a row, wherein the second fixing plate (25) is provided with a plurality of grooves for accommodating the second clamping blocks (24), and the second clamping blocks (24) are connected to the second cylinder (23) via the second fixing plate (25).

8. The power battery OCV testing device according to claim 2, characterized in that: The frame (3) comprises a vertical rod (33) connecting the layer plate (32) and the top plate (31), and the vertical rod (33) has a telescopic function.

9. The power battery OCV testing device according to claim 7, characterized in that: The second probe assembly (2) also includes a pressing block (22) arranged below the second clamping block (24), and the pressing block (22) is made of insulating material.

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