A battery voltage internal resistance testing device

Abstract

The utility model discloses a battery voltage internal resistance testing arrangement belongs to battery performance detection technical field. Including test board, code scanning gun, the battery core of measuring, the battery core profiling fixture, the test board is provided with two probe module along the battery core profiling fixture symmetry, probe module includes the probe base that slides connection in test board along the horizontal direction, is provided with the air cylinder for driving mounting panel to move to the battery core profiling fixture on the probe base, and the output end of air cylinder is slidably connected to mounting panel along the vertical direction, and is provided with the test probe that can float along the output direction of air cylinder on mounting panel. The utility model discloses a battery voltage internal resistance testing arrangement, has solved the problem that the existing battery testing arrangement is poor in adaptability and lacks bar code interpretation.

Description

Technical Field

[0001] This utility model belongs to the field of battery performance testing technology, specifically relating to a battery voltage internal resistance testing device. Background Technology

[0002] During battery production, use, and maintenance, battery voltage and internal resistance are key parameters reflecting battery performance, directly affecting battery range, charge / discharge efficiency, and lifespan. Currently, commercially available battery voltage and internal resistance testing devices have several shortcomings: Firstly, existing battery testing devices are mostly designed for single batteries, exhibiting poor adaptability or incompatibility, making testing difficult. Secondly, existing battery testing devices lack barcode scanning and data recording functions, hindering the control and tracking of battery parameters.

[0003] Therefore, there is an urgent need for a battery voltage internal resistance testing device that is highly adaptable and facilitates the recording and tracking of battery parameters. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a battery voltage internal resistance testing device, which solves the problems of poor adaptability and lack of barcode interpretation in existing battery testing devices.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a battery voltage internal resistance testing device, including a test platform, a barcode scanner, and a cell profiling fixture detachably connected to the test platform for positioning and fixing the cell to be tested; Two probe modules are symmetrically arranged on the test bench along the cell-shaped fixture. The probe module includes a probe base that is slidably connected to the test bench in the horizontal direction. The probe base is provided with a cylinder for driving the mounting plate to move toward the cell conforming fixture. The mounting plate is slidably connected to the output end of the cylinder in the vertical direction, and the mounting plate is provided with a test probe that can float in the output direction of the cylinder. The barcode scanner is electrically connected to the cylinder.

[0006] Optionally, the test platform includes a test base and a pad detachably connected to the test base. A strip-shaped track groove for sliding connection of a slider is formed between the bottom side of the pad and the test base. The pad is provided with a recessed groove for slidingly embedding into the probe base. A first through hole corresponding to the position of the strip-shaped track groove is opened on the bottom side of the recessed groove. A first bolt that can pass through the first through hole and be threadedly connected to the slider is provided on the probe base. The first bolt can penetrate the slider.

[0007] Optionally, the mounting plate is provided with a plurality of parallel second through holes along the vertical direction, and the second through holes are used to pass through a second bolt that can be threadedly connected to the output end of the cylinder.

[0008] Optionally, the mounting plate is provided with a plurality of limiting tubes, the test probe can move through the inner cavity of the limiting tube along the driving direction of the cylinder, and a spring is sleeved on the outer periphery of the test probe, the two ends of the spring being fixedly connected to the test probe and the limiting tube respectively.

[0009] Optionally, each probe module includes at least two test probes, and the test probes in the same probe module are connected in series.

[0010] Optionally, the test bench is provided with a column, and the column is provided with a mounting base for mounting the barcode scanner, and the barcode scanner mounted on the mounting base is suspended above the battery cell to be tested placed on the battery cell conforming fixture.

[0011] Optionally, the test bench is equipped with a start switch and an emergency stop button that are electrically connected to the cylinder.

[0012] Optionally, the pad is an insulating plate, and the cell conforming fixture is detachably connected to the pad.

[0013] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: (1) The probe base can be fixedly connected to the test bench within its horizontal travel range, and the mounting plate can be fixedly connected to the output end of the cylinder within its vertical travel range. With the detachable and replaceable cell profiling fixture, the battery voltage internal resistance testing device in this technical solution can adjust the detection position of the test probe according to different types and sizes of cells to be tested, which greatly increases the adaptability and compatibility of the testing device. (2) The barcode scanner reads the barcode on the surface of the battery cell under test and can trigger the cylinder drive command by reading the barcode, thereby causing the cylinder to drive the test probe to come into contact with the electrode of the battery cell under test. This facilitates the quick entry into the test of the battery cell's voltage and internal resistance. At the same time, it can also facilitate the association of the test data of the battery cell under test with the barcode on its surface, thereby facilitating the control and tracking of the parameters of the battery cell under test. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram of the battery voltage internal resistance testing device in a preferred embodiment of the present invention; Figure 2 This is a top view of the battery voltage internal resistance testing device in a preferred embodiment of the present invention. Figure 3 This is a preferred embodiment of the present invention. Figure 2 A schematic cross-sectional view at point AA; Figure 4 This is a schematic diagram of the probe module in a preferred embodiment of the present invention; Figure 5 This is a cross-sectional view of the preferred embodiment of the present invention with the test probe floating on the mounting plate; The components include: 1. barcode scanner; 2. battery cell conforming fixture; 3. battery cell to be tested; 4. probe base; 5. mounting plate; 501. first through hole; 6. cylinder; 7. test probe; 8. test base; 9. pad; 901. sinking groove; 902. first through hole; 10. strip track groove; 11. slider; 12. first bolt; 13. second bolt; 14. limit tube; 15. spring; 16. column; 17. mounting base; 18. start switch; 19. emergency stop button. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0017] It should be noted that if directional indicators (such as up, down, bottom, top, etc.) are involved in this embodiment, these directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. Unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. Example 1

[0018] like Figures 1-5As shown, a battery voltage internal resistance testing device includes a test platform, a barcode scanner 1, and a cell profiling fixture 2 detachably connected to the test platform for positioning and fixing the battery cell 3 under test. The cell profiling fixture 2 is detachably connected to the test platform, allowing operators to easily replace different models of the cell profiling fixture 2 according to testing needs. The barcode scanner 1 used is an industrial-grade barcode scanning device based on existing battery cell production and testing processes, mainly used to scan the barcode information on the surface of the battery cell 3 under test. Two probe modules are symmetrically arranged along the cell profiling fixture 2 on the test platform, and each probe module can correspond to one of the two terminals of the battery cell 3 under test placed on the cell profiling fixture 2.

[0019] Specifically, the probe module includes a probe base 4 that is slidably connected to the test bench in the horizontal direction. The probe base 4 is provided with a cylinder 6 for driving the mounting plate 5 to move toward the cell conforming fixture 2. The mounting plate 5 is slidably connected to the output end of the cylinder 6 in the vertical direction, and the mounting plate 5 is provided with a test probe 7 that can float in the output direction of the cylinder 6. This prevents the test probe 7 from directly and rigidly contacting the test contact with the electrode of the cell 3 under test when the cylinder 6 drives the test probe 7 to move toward the electrode of the cell 3 under test, thereby preventing the test probe 7 from bending and deforming due to force and improving the service life of the test probe 7.

[0020] Meanwhile, in the technical solution, the barcode scanner 1 is electrically connected to the cylinder 6. That is, when the operator places the battery cell 3 under test flat on the battery cell conforming fixture 2, they can scan the battery cell 3 placed on the fixture 2 using the handheld barcode scanner 1. Alternatively, the position of the barcode scanner 1 can be fixed, and the battery cell 3 under test can be flipped so that the barcode on the battery cell 3 is exposed within the scanning range of the barcode scanner 1. Subsequently, after the barcode scanner 1 scans the barcode on the battery cell 3 under test, the signal can be transmitted to an existing electronic information device with data analysis capabilities, such as a control board or computer. The cylinder 6 will then execute the command to test the internal resistance under the influence of this signal. In other words, the cylinders 6 in the two probe modules can synchronously drive the test probes 7 on the corresponding mounting plates 5 to move towards the battery cell 3 under test until a reliable contact is formed between the test contact on the test probe 7 and the electrode of the battery cell 3 under test. At this time, the test probe 7 can perform voltage and internal resistance tests on the cell under test 3, and the test results can also be bound to the barcode of the cell under test 3 through electronic information equipment, thereby facilitating the control and tracking of the cell under test 3.

[0021] Furthermore, such as Figures 1-3As shown, the test bench includes a test base 8 and a pad 9 detachably connected to the test base 8. Specifically, the test base 8 and the pad 9 can be detachably connected by fasteners such as bolts and clips to facilitate daily maintenance. Meanwhile, a strip-shaped track groove 10 for sliding connection of the slider 11 is formed between the bottom side of the pad 9 and the test base 8. The pad 9 is provided with a recessed groove 901 for slidingly embedding the probe base 4, and a first through hole 902 corresponding to the position of the strip-shaped track groove 10 is opened on the bottom side of the recessed groove 901. The probe base 4 is provided with a first bolt 12 that can pass through the first through hole 902 and be threadedly connected to the slider 11. The first bolt 12 can pass through the slider 11. It should be noted that the slider 11 can move linearly along a fixed trajectory within the strip track groove 10, the probe base 4 can slide in the sink groove 901, and the first bolt 12 can slide linearly along the first through hole 902. The movement trajectories of the slider 11 and the first bolt 12 are parallel or coincident, thereby limiting the movement trajectory of the probe base 4. When the first bolt 12 is threadedly fastened to the slider 11, the probe base 4 can be fixed on the test table. That is, the probe base 4 can be fixedly connected to the test table at any position within its stroke range, thereby facilitating the adjustment of the horizontal position of the test probe 7 as needed.

[0022] Meanwhile, the pad 9 mentioned above is an insulating plate, and the cell conforming fixture 2 is detachably connected to the pad 9 to reduce interference from the external environment during voltage and internal resistance testing of the cell 3 under test. Specifically, the cell conforming fixture 2 can be detachably connected through threaded connections, snap-fit ​​connections, or other connection methods.

[0023] Furthermore, such as Figure 4 , Figure 5 As shown, the mounting plate 5 has several parallel second through holes 501 arranged vertically. In this technical solution, each mounting plate 5 has at least two second through holes 501. A second bolt 13 can pass through the second through hole 501, and one end of the second bolt 13 passing through the second through hole 501 can be threadedly connected to the output end of the cylinder 6. That is, the mounting plate 5 can be fixedly connected to the output end of the cylinder 6 at any position within its stroke range, thereby facilitating the adjustment of the vertical height of the test probe 7 according to the test requirements.

[0024] With the addition of a detachable and replaceable cell profiling fixture 2, the testing device in this technical solution can adjust the detection position of the test probe 7 according to different types and sizes of the cells to be tested 3, which greatly increases the adaptability and compatibility of the testing device.

[0025] Furthermore, the mounting plate 5 is provided with several limiting tubes 14, which can be embedded in the mounting plate 5 or threadedly connected to the mounting plate 5. The test probe 7 can move along the driving direction of the cylinder 6 and pass through the inner cavity of the limiting tube 14. A spring 15 is sleeved around the outer periphery of the test probe 7, with both ends of the spring 15 fixedly connected to the test probe 7 and the limiting tube 14, respectively. This ensures that within the stroke range of the cylinder 6, after the test probe 7 contacts the electrode of the battery cell 3 under test, reliable contact between the test probe 7 and the electrode of the battery cell 3 under test can be achieved under the action of the stretched or compressed spring 15. Specifically, as shown... Figure 5 As shown, in this technical solution, the spring 15 is sleeved on the tail end of the test probe 7. When the cylinder 6 drives the test probe 7 to abut against the electrode of the cell under test 3, the spring 15 will be stretched. Example 2

[0026] like Figures 1-5 As shown, based on Embodiment 1, each probe module includes at least two test probes 7, and the test probes 7 in the same probe module are connected in series to reduce resistance measurement errors caused by poor contact of a single test probe 7.

[0027] Furthermore, such as Figure 1 As shown, a column 16 is provided on the test stand, and a mounting base 17 for mounting the barcode scanner 1 is provided on the column 16. The barcode scanner 1 mounted on the mounting base 17 is suspended above the battery cell 3 to be tested, which is placed on the battery cell conforming fixture 2, so that the operator can easily observe whether the battery cell 3 to be tested has been flipped into place.

[0028] Meanwhile, in this embodiment, the test bench is equipped with a start switch 18 and an emergency stop button 19 that are electrically connected to the cylinder 6. The start switch 18 is used to start and stop the cylinder 6, and the emergency stop button 19 is used to cut off the power supply to the cylinder 6 in an emergency, so as to improve the flexibility and safety of the test device.

[0029] Working Principle: The probe base 4 can be fixedly connected to the test bench within its horizontal travel range, and the mounting plate 5 can be fixedly connected to the output end of the cylinder 6 within its vertical travel range. Combined with the detachable and replaceable cell profiling fixture 2, the battery voltage internal resistance testing device in this technical solution can specifically adjust the detection position of the test probe 7 according to different types and sizes of the cell under test 3, greatly increasing the adaptability and compatibility of the testing device. Simultaneously, by adding a barcode scanner 1 that can be associated with the drive command of the cylinder 6, the barcode scanner 1 can read barcodes to trigger the drive command of the cylinder 6, thereby causing the cylinder 6 to drive the test probe 7 to contact the electrode of the cell under test 3. This facilitates rapid entry into the voltage internal resistance testing operation of the cell under test 3, and also facilitates the association of the test data of the cell under test 3 with its surface barcode, thereby facilitating the control and tracking of the parameters of the cell under test 3.

[0030] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A battery voltage internal resistance testing device, characterized in that: Includes a test bench, a barcode scanner (1), and a cell conforming fixture (2) that is detachably connected to the test bench and used to position and fix the cell under test (3). Two probe modules are symmetrically arranged on the test bench along the cell-shaped fixture (2); The probe module includes a probe base (4) that is slidably connected to the test bench in the horizontal direction. The probe base (4) is provided with a cylinder (6) for driving the mounting plate (5) to move toward the cell conforming fixture (2). The mounting plate (5) is slidably connected to the output end of the cylinder (6) in the vertical direction. The mounting plate (5) is provided with a test probe (7) that can float in the output direction of the cylinder (6). The barcode scanner (1) is electrically connected to the cylinder (6).

2. The battery voltage internal resistance testing device according to claim 1, characterized in that: The test bench includes a test base (8) and a pad (9) detachably connected to the test base (8). A strip-shaped track groove (10) for sliding connection of a slider (11) is sandwiched between the bottom side of the pad (9) and the test base (8). A recessed groove (901) for slidingly embedding into the probe base (4) is provided on the pad (9). A first through hole (902) corresponding to the position of the strip-shaped track groove (10) is opened on the bottom side of the recessed groove (901). A first bolt (12) that can pass through the first through hole (902) and be threadedly connected to the slider (11) is provided on the probe base (4). The first bolt (12) can penetrate the slider (11).

3. The battery voltage internal resistance testing device according to claim 1, characterized in that: The mounting plate (5) is provided with a number of parallel second through holes (501) arranged in the vertical direction, and the second through holes (501) are used to pass through a second bolt (13) that can be threaded to the output end of the cylinder (6).

4. The battery voltage internal resistance testing device according to claim 1, characterized in that: The mounting plate (5) is provided with several limiting tubes (14). The test probe (7) can move along the driving direction of the cylinder (6) and pass through the inner cavity of the limiting tube (14). The outer periphery of the test probe (7) is fitted with a spring (15). The two ends of the spring (15) are fixedly connected to the test probe (7) and the limiting tube (14) respectively.

5. The battery voltage internal resistance testing device according to claim 1, characterized in that: Each probe module includes at least two test probes (7), and the test probes (7) in the same probe module are connected in series.

6. The battery voltage internal resistance testing device according to claim 1, characterized in that: The test bench is provided with a column (16), and the column (16) is provided with a mounting base (17) for mounting the barcode scanner (1), and the barcode scanner (1) mounted on the mounting base (17) is suspended above the battery cell (3) to be tested placed on the battery cell conforming fixture (2).

7. The battery voltage internal resistance testing device according to claim 1, characterized in that: The test bench is equipped with a start switch (18) and an emergency stop button (19) that are electrically connected to the cylinder (6).

8. The battery voltage internal resistance testing device according to claim 2, characterized in that: The pad (9) is an insulating plate, and the battery cell conforming fixture (2) is detachably connected to the pad (9).

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