Water spraying testing device for lithium battery

Abstract

The utility model provides a water spray testing device for a lithium battery, which relates to the technical field of water spray testing of lithium batteries and comprises a fixing tool, an environment temperature control device, a water cooling control device, a height adjusting device and a spray device. The fixing tool comprises a base platform and a fixing block, a battery is fixed on the base platform through the fixing block, the environment temperature control device is used for controlling the temperature of a test environment, and the water cooling control device comprises a water cooling machine, a pipeline, a pressure sensor and a flow sensor. The device can effectively eliminate the influence of water flow impact on the detection position of the lithium battery, and ensures that the position of the lithium battery is fixed in the rotating process and the impact process; by setting the flow, the pressure and the working time of the water cooling machine and adjusting the position of the spraying head, the multi-angle and multi-direction detection of three modes of direct spraying, spot spraying and spraying on the fixed position or the whole position of the lithium battery can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery water spray testing, in particular to a lithium battery water spray testing device. Background Art

[0002] At present, laboratories in the field of battery testing mainly use manual water pumps to spray lithium battery casings to test the waterproof ability of lithium battery casings. The spray test devices currently used in laboratories are mostly manual spraying methods with unstable spray angles. It is impossible or difficult to record flow, temperature and pressure data. Therefore, a device is needed that can use tooling to fix samples, adjust ambient temperature and water temperature, and record flow, pressure and temperature data during spraying. Utility Model Content

[0003] The purpose of the utility model is to provide a water spray testing device for lithium batteries, which solves the problem that the test product will be displaced by the impact of water flow when the lithium battery is sprayed; solves the problem of obtaining flow, temperature and pressure parameters during the lithium battery spraying process; and solves the problem that the product can be sprayed in multiple sputtering positions under different ambient temperatures.

[0004] To solve the above problems, the utility model provides a water spray testing device for lithium batteries, comprising a fixing tool, an ambient temperature control device, a water cooling control device, a height adjustment device and a spray device; the fixing tool comprises a base platform and a fixing block, and the battery is fixed on the base platform by means of the fixing block, the ambient temperature control device is used to control the temperature of the test environment, the water cooling control device comprises a water cooler, a pipeline, a pressure sensor and a flow sensor, the spray device comprises a spray head, the spray head is connected to the pipeline, and the height adjustment device is used to adjust the relative height between the battery and the spray head.

[0005] According to an embodiment of the present invention, the environmental temperature control device includes a high and low temperature environmental box, and the fixed tooling is arranged in the high and low temperature environmental box.

[0006] According to an embodiment of the present invention, the base platform is installed on the rotating shaft.

[0007] According to an embodiment of the present invention, the rotating shaft is connected to a driving motor.

[0008] According to an embodiment of the present invention, the height adjustment device includes a plurality of shower head fixing holes, and the shower head fixing holes are distributed at different heights for fixing the shower head at different heights.

[0009] According to an embodiment of the present invention, the water spray testing device for lithium batteries further includes a control computer, and the control computer is used to obtain and display parameters of the pressure sensor and the flow sensor.

[0010] According to an embodiment of the present invention, the contact surface between the fixing block and the battery is a curved surface.

[0011] According to an embodiment of the present invention, the contact surface between the fixing block and the battery is a plane.

[0012] According to an embodiment of the present invention, the fixing block is mounted on the base platform via a screw and a nut.

[0013] According to an embodiment of the present invention, a plurality of screw holes are distributed on the base platform, and different types of batteries can be accommodated by adjusting the installation position of the fixing block.

[0014] The beneficial effect of the utility model is that the device can select a square or arc-surface fixing block for bottom fixing according to the shape of the lithium battery, which can effectively eliminate the influence of water flow impact on the detection position of the lithium battery and ensure that the position of the lithium battery remains unchanged during the rotation process and the impact process;

[0015] By setting the flow rate, pressure, working time of the water cooler and adjusting the position of the spray head, it is possible to implement three modes of detection: direct spraying, spot spraying and spraying at fixed positions or overall positions on the lithium battery in multiple angles and directions.

[0016] The temperature of the high and low temperature environmental chamber and the spray water can be adjusted to detect the sealing of lithium batteries from the dimension of temperature difference.

[0017] The flow rate, temperature, pressure and spray time data during the testing process can be recorded and maintained, facilitating effective traceability of the testing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the overall structure of a water spray test device for lithium batteries;

[0020] Figure 2 This is the main view of the fixed tooling;

[0021] Figure 3 It is a structural diagram of a square fixed block;

[0022] Figure 4 It is a structural diagram of the arc surface fixing block. DETAILED DESCRIPTION

[0023] The following description is intended only to disclose the present invention and to enable those skilled in the art to implement the present invention. The embodiments described below are provided for illustrative purposes only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention as defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other solutions that do not depart from the spirit and scope of the present invention.

[0024] [Example 1]

[0025] A water spray test device for lithium batteries, such as Figure 1 , including a fixed tooling, an ambient temperature control device, a water cooling control device, a height adjustment device and a spray device; the fixed tooling includes a base platform 3 and a fixed block 14, and the battery is fixed on the base platform 3 using the fixed block 14. The ambient temperature control device is used to control the temperature of the test environment. In this embodiment, the ambient temperature control device includes a high and low temperature environment box 1, and the high and low temperature environment box 1 is provided with a door body 4. The door body 4 is opened to place the lithium battery 2. The fixed tooling is set in the high and low temperature environment box 1. The high and low temperature environment box 1 is generally provided with a refrigeration system and a heating system for adjusting the temperature in the box to simulate the temperature conditions on site during actual use.

[0026] The fixing fixture is mainly to place the sample in the center of the base platform 3 and fix it with a fixing block 14 so that the sample can be fixed on the base platform 3. The fixing block 14 is divided into a square fixing block and a curved fixing block, such as Figure 3 、 Figure 4 The contact surface between the arc-surface fixing block and the battery is a curved surface 18, and the contact surface between the square fixing block and the battery is a flat surface 19. The required fixing block can be selected according to the shape of the lithium battery. This can prevent the sample to be tested from moving arbitrarily due to the impact of water flow, and can also maintain the current position during the rotation of the base.

[0027] like Figure 2 The fixing block 14 is mounted on the base platform 3 through a screw 15 and a nut 16. The fixing block 14 is provided with a screw through hole 17 for the screw 4 to pass through. Figure 1 The base platform 3 is disc-shaped and has a plurality of screw holes radially distributed thereon. By adjusting the installation position of the fixing block 14, it can adapt to batteries of different sizes.

[0028] The water cooling control device includes a water cooler 11, a pipeline 10, a pressure sensor 8 and a flow sensor 9. The pipeline 10 is connected to the water cooler 11. The pressure sensor 8 and the flow sensor 9 are arranged on the pipeline 10. The pressure sensor 8 and the flow sensor 9 are connected to the control computer 12 through a communication line 13. The control computer 12 obtains the parameters of the pressure sensor 8 and the flow sensor 9, and displays and records the water flow and pressure conditions during spraying in real time, which is convenient for tracing after testing.

[0029] Optionally, the control computer 12 can also be electrically connected to the high and low temperature environment box 1 to obtain temperature parameters. The control computer 12 is also connected to the water cooler 11 to obtain and control the temperature control parameters, working time parameters, pump water pressure parameters, etc. of the water cooler 11.

[0030] The spraying device includes a spray head 6 , which is connected to a pipeline 10 , and a height adjustment device is used to adjust the relative height between the battery and the spray head 6 .

[0031] Optionally, the height adjustment device can be set to adjust the height of the battery, or can be set to adjust the height of the sprinkler head 6. In this embodiment, the height adjustment device includes a plurality of sprinkler head fixing holes 7, and the sprinkler head fixing holes 7 are distributed at different heights for fixing the sprinkler head 6 at different heights. The sprinkler head fixing holes 7 generally include at least 5 different position heights. The sprinkler head can be adjusted freely and flexibly, and can realize various modes such as direct spraying, point spraying, spraying, and sputtering through different heights.

[0032] The device also includes a rotating assembly, which is used to rotate the battery. Figure 1 The base platform 3 is installed on the rotating shaft 5. Further, the rotating shaft 5 is connected to the driving motor. The driving motor generally uses a servo motor, which can control the accurate testing direction and angle of the lithium battery through the servo motor.

[0033] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are intended only as examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations and modifications may be made to the embodiments of the present invention without departing from the principles described.

Claims

1. A water spray test device for lithium batteries, characterized in that: The invention comprises a fixing tool, an environment temperature control device, a water cooling control device, a height adjustment device and a spray device; the fixing tool comprises a base platform (3) and a fixing block (14), and the battery is fixed on the base platform (3) by means of the fixing block (14); the environment temperature control device is used to control the temperature of the test environment; the water cooling control device comprises a water cooler (11), a pipeline (10), a pressure sensor (8) and a flow sensor (9); the spray device comprises a spray head (6), and the spray head (6) is connected to the pipeline (10); and the height adjustment device is used to adjust the relative height between the battery and the spray head (6).

2. The water spray test device for lithium batteries according to claim 1, characterized in that: The environmental temperature control device comprises a high and low temperature environmental box (1), and the fixed tooling is arranged in the high and low temperature environmental box (1).

3. The water spray test device for lithium batteries according to claim 2, characterized in that: The base platform (3) is mounted on the rotating shaft (5).

4. The water spray test device for lithium batteries according to claim 3, characterized in that: The rotating shaft (5) is connected to a driving motor.

5. The water spray testing device for lithium batteries according to any one of claims 1 to 4, characterized in that: The height adjustment device comprises a plurality of shower head fixing holes (7), and the shower head fixing holes (7) are distributed at different heights and are used to fix the shower head (6) at different heights.

6. The water spray testing device for lithium batteries according to any one of claims 1 to 4, characterized in that: The lithium battery water spray testing device also includes a control computer (12), wherein the control computer (12) is used to obtain and display parameters of the pressure sensor (8) and the flow sensor (9).

7. The water spray test device for lithium batteries according to claim 5, characterized in that: The contact surface between the fixing block (14) and the battery is a curved surface.

8. The water spray testing device for lithium batteries according to claim 5, characterized in that: The contact surface between the fixing block (14) and the battery is a plane.

9. The water spray testing device for lithium batteries according to claim 1, characterized in that: The fixing block (14) is mounted on the base platform (3) via a screw rod (15) and a nut (16).

10. The water spray testing device for lithium batteries according to claim 9, characterized in that: The base platform (3) is provided with a plurality of screw holes distributed thereon, and the installation position of the fixing block (14) can be adjusted to accommodate batteries of different models.

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