Battery waterproof testing device

Abstract

The utility model relates to a battery waterproof test device, and belongs to the technical field of battery testing, the battery waterproof test device comprises a water immersion test assembly, an environment alternating test assembly, a transfer assembly and a control assembly, the water immersion test assembly is used for carrying out water immersion test on a battery; the environment alternating test assembly is arranged on one side of the water immersion test assembly and is used for carrying out environment alternating test on the battery; the environment alternating testing assembly comprises a first assembling module and a second assembling module which are oppositely arranged, the first assembling module can move in the direction close to or away from the second assembling module, and the first assembling module and the second assembling module can be connected in a sealed mode to define a testing space; the transfer assembly is adjacent to the water immersion test assembly and the environment alternating test assembly; the control assembly is in communication connection with the immersion test assembly, the environment alternating test assembly and the transfer assembly. According to the battery waterproof test device, multiple test modes can be provided for the battery, and the test efficiency is effectively improved.

Description

Technical Field

[0001] This application relates to the field of battery testing technology, and in particular to a battery waterproof testing device. Background Technology

[0002] As a crucial energy storage unit, the waterproofing of power batteries is a necessary step. Furthermore, batteries require various waterproofing performance tests to achieve comprehensive testing results. However, current waterproofing testing equipment cannot simulate complex environments, resulting in low testing efficiency. Utility Model Content

[0003] Purpose of the utility model: This application provides a battery waterproof testing device to solve the problem that existing waterproof testing equipment cannot simulate complex environments, resulting in low testing efficiency.

[0004] Technical solution: The battery waterproof testing device described in this application includes:

[0005] Immersion test kit, used for immersion testing of batteries;

[0006] An environmental alternation test assembly is disposed on one side of the immersion test assembly and is used to perform environmental alternation tests on the battery. The environmental alternation test assembly includes a first assembly module and a second assembly module disposed opposite to each other. The first assembly module can move in a direction that is close to or away from the second assembly module. The first assembly module and the second assembly module can be sealed together to form a test space.

[0007] A transfer component, disposed adjacent to the immersion test component and the environmental alternation test component, is used to move the battery between the immersion test component and the environmental alternation test component;

[0008] The control component is communicatively connected to the immersion test component, the environmental alternation test component, and the transfer component, respectively.

[0009] In some embodiments, the immersion test component includes:

[0010] The workbench is equipped with a work surface and a water immersion tank, with the opening of the water immersion tank penetrating through the work surface.

[0011] The image acquisition module is installed inside the immersion tank and is communicatively connected to the control component.

[0012] The water circulation module is connected to the immersion tank and communicates with the control components.

[0013] The inflation module, which communicates with the control components, is used to inflate the battery's internal cavity with air.

[0014] In some embodiments, the inflation module includes:

[0015] Inflatable part;

[0016] Inflation tubing connects to the inflation section;

[0017] The differential pressure detection component is installed in the inflation line to detect pressure changes in the inflation line;

[0018] The docking component is connected to the end of the inflation line away from the inflation section and is used for a sealed connection with the battery's explosion-proof valve.

[0019] In some embodiments, the docking component includes:

[0020] A flexible housing with a sealed cavity for sealing connection with an explosion-proof valve;

[0021] A support component is disposed within the sealed cavity and is sealed to the flexible shell to divide the sealed cavity into an operating cavity and an inflation cavity, the inflation cavity being used to accommodate the explosion-proof valve.

[0022] An elastic switch is disposed in a sealed cavity and connected to a flexible shell; the elastic switch is sealed and embedded in a support member and partially disposed in an inflation cavity; a suction head is provided at one end of the elastic switch located in the inflation cavity, and the suction head is used to open or close the explosion-proof valve.

[0023] In some embodiments, the battery waterproof testing device further includes a spray testing component, which is disposed on one side of the immersion testing component and is communicatively connected to the control component for performing a spray test on the battery.

[0024] In some embodiments, the spray test assembly is set within the test space of the environmental alternation test assembly.

[0025] In some embodiments, the environmental alternation test component includes:

[0026] The slide rail is mounted on the working surface, and its orthographic projection on the working surface is located outside the opening of the immersion tank; both the first assembly module and the second assembly module are slidably connected to the slide rail.

[0027] The adjustment module communicates with the control components and is used to control environmental changes within the test space.

[0028] In some embodiments, when the first assembly module is furthest from the second assembly module, the first assembly module and the second assembly module are located on opposite sides of the immersion tank along the extension direction of the slide rail.

[0029] In some embodiments, the second assembly module has a housing space for accommodating the battery, the housing space being used to form at least a portion of the test space, the spray test assembly being disposed within the housing space, and the transfer assembly being movable between the housing space and the immersion tank.

[0030] In some embodiments, the second assembly module has a first opening and a second opening. Along the extension direction of the slide rail, the first opening is located on the side of the second assembly module close to the first assembly module, and the second opening is located on the side of the second assembly module away from the slide rail. The first opening and the second opening are in communication, and both the first opening and the second opening are in communication with the accommodating space.

[0031] The first assembly module includes a first sealing plate and a second sealing plate. The first sealing plate is slidably connected to the slide rail and can be sealed to the second assembly module to cover the first opening. The second sealing plate is connected to the side of the first sealing plate away from the slide rail and can be sealed to the second assembly module to cover the second opening.

[0032] Compared with the prior art, a battery waterproof testing device according to an embodiment of this application includes a water immersion testing component, an environmental alternation testing component, a transfer component, and a control component. The water immersion testing component is used to perform water immersion testing on the battery. The environmental alternation testing component is disposed on one side of the water immersion testing component and is used to perform environmental alternation testing on the battery. The environmental alternation testing component includes a first assembly module and a second assembly module disposed opposite to each other. The first assembly module can move in a direction close to or away from the second assembly module. The first assembly module and the second assembly module can be sealed together to form a test space. The transfer component is disposed adjacent to the water immersion testing component and the environmental alternation testing component and is used to move the battery between the water immersion testing component and the environmental alternation testing component. The control component is communicatively connected to the water immersion testing component, the environmental alternation testing component, and the transfer component. This application rationally arranges the immersion test component, the environmental alternation test component, the transfer component, and the control component. The first assembly module and the second assembly module can be opened to use the transfer component to transfer the battery between the immersion test component and the environmental alternation test component, thereby forming a multi-mode battery waterproof test device. This device can provide multiple test modes for the battery with a single test device, effectively improving test efficiency.

[0033] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0036] Figure 1 This is a schematic diagram of the overall structure of a battery waterproof testing device according to an embodiment of this application;

[0037] Figure 2 This is a top view of a battery waterproof testing device according to an embodiment of this application;

[0038] Figure 3 This is a schematic diagram of the structure of an inflation module according to an embodiment of this application;

[0039] Figure 4 This is a schematic diagram of the structure of a battery waterproof testing device according to an embodiment of this application, after the first splicing module and the second splicing module are spliced ​​together;

[0040] Figure 5 This is a schematic diagram of the structure of a docking component after docking with an explosion-proof valve according to an embodiment of this application;

[0041] Figure 6 This is a flowchart illustrating a method for applying a battery waterproof testing device to a waterproof testing procedure according to an embodiment of this application.

[0042] Figure 7 This is a detailed flowchart of step S100 of a method for applying a battery waterproof testing device to a waterproof testing method according to an embodiment of this application;

[0043] Figure 8 This is a detailed flowchart of step S200 of a method for applying a battery waterproof testing device to a waterproof testing method according to an embodiment of this application;

[0044] Figure 9 This is a detailed flowchart of step S300 of a method for applying a battery waterproof testing device to a waterproof testing method according to an embodiment of this application;

[0045] Figure 10 This is a detailed flowchart illustrating the application of a battery waterproof testing device in this application to a method for simultaneous spray testing and environmental alternation testing in waterproof testing.

[0046] Explanation of reference numerals in the attached figures:

[0047] 100. Immersion test assembly; 110. Workbench; 111. Working surface; 112. Immersion tank; 120. Image acquisition module; 130. Water circulation module; 140. Inflation module; 141. Inflation section; 142. Inflation pipeline; 143. Differential pressure detection component; 144. Docking component; 1441. Flexible shell; 1442. Support component; 1443. Flexible switch; 1444. Sealing cavity; 1445. Operating cavity; 1446. Inflation cavity; 1447. Suction head; 150. Liquid level sensor;

[0048] 200. Environmental alternation test assembly; 210. Slide rail; 220. First assembly module; 221. First sealing plate; 222. Second sealing plate; 230. Second assembly module; 231. Accommodation space; 232. First opening; 233. Second opening; 240. Test space; 250. Adjustment module;

[0049] 300. Spray test kit;

[0050] 400. Transfer components;

[0051] 500. Control components;

[0052] 600. Battery; 610. Explosion-proof valve; 611. Top cover. Detailed Implementation

[0053] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0054] In the description of this application, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, 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. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, and "at least one" can mean one, two, or more, unless otherwise explicitly specified. In the description of this application, "perpendicular" means completely perpendicular to 90° or almost completely perpendicular, for example, the range of included angles from 80° to 100° is considered perpendicular. Similarly, "parallel" means completely parallel or almost completely parallel, for example, the range of completely parallel angles from 10° is considered parallel.

[0055] In related technologies, batteries need to undergo long-term cycle testing to verify their lifespan. However, transmission testing equipment has a single testing mode and cannot simulate complex testing environments, resulting in low testing efficiency.

[0056] Please refer to the following: Figure 1 and Figure 2 This application provides a battery waterproof testing device, including a water immersion testing component 100, an environmental alternation testing component 200, a transfer component 400, and a control component 500. The water immersion testing component 100 is used to perform a water immersion test on a battery 600. The environmental alternation testing component 200 is disposed on one side of the water immersion testing component 100 and is used to perform an environmental alternation test on the battery 600. The environmental alternation testing component 200 includes a first assembly module 220 and a second assembly module 230 disposed opposite to each other. The first assembly module 220 and the second assembly module 230 can move in a direction that approaches or moves away from the second assembly module 230. The first assembly module 220 and the second assembly module 230 can be sealed together to form a test space 240. The transfer component 400 is arranged adjacent to the immersion test component 100 and the environmental alternation test component 200 to enable the battery 600 to move between the immersion test component 100 and the environmental alternation test component 200. The control component 500 is communicatively connected to the immersion test component 100, the environmental alternation test component 200 and the transfer component 400 respectively.

[0057] In this embodiment, by rationally arranging the immersion test component 100, the environmental alternation test component 200, the transfer component 400, and the control component 500, the first assembly module 220 and the second assembly module 230 can be opened to use the transfer component 400 to transfer the battery 600 between the immersion test component 100 and the environmental alternation test component 200, thereby forming a multi-mode battery 600 waterproof test device. This device can provide multiple test modes for the battery 600 with a single test device, effectively improving test efficiency.

[0058] It should be noted that the immersion test component 100 of this application can provide an immersion environment for the battery 600. Specifically, it can provide a container capable of holding enough water to completely submerge the battery 600, ensuring that the battery 600 is fully submerged below the liquid surface, thus facilitating the immersion test of the battery 600. During the immersion test, the battery 600 is submerged in water while gas at a certain pressure is introduced into it. The presence or absence of bubbles on the liquid surface is observed. If no bubbles are generated, the battery 600 passes the immersion test; if bubbles are generated, the battery 600 fails the immersion test and its sealing performance needs to be checked.

[0059] The environmental alternation test assembly 200 of this application can specifically be a temperature / pressure alternation test assembly, wherein the battery 600 is placed in a sealed space, and the temperature and / or pressure in the space are changed to achieve alternating changes in temperature and / or pressure, thereby testing the waterproof performance of the sealant of the battery 600 after thermal expansion and contraction and / or pressure alternation, thus realizing the environmental alternation test of the battery 600.

[0060] It should also be noted that, in this embodiment, the transfer component 400 is used to move the battery 600 between various test components, thereby enabling waterproof testing of the battery 600 in various modes. The transfer component 400 may have a lifting structure and a robotic arm to grasp and lift the battery 600 and transfer it to a corresponding area. The control component 500 is communicatively connected to the immersion test component 100, the environmental alternation test component 200, and the transfer component 400, respectively, to control the operating state of each test component and the transfer component 400, thereby enabling waterproof testing of the battery 600 in various modes.

[0061] Please refer to the following: Figure 1 and Figure 2 In some embodiments, the immersion test assembly 100 includes a workbench 110, an image acquisition module 120, a water circulation module 130, and an inflation module 140. The workbench 110 has a working surface 111 and an immersion tank 112, with the opening of the immersion tank 112 penetrating through the working surface 111. The image acquisition module 120 is disposed in the opening of the immersion tank 112 and is communicatively connected to the control assembly 500. The water circulation module 130 is connected to the immersion tank 112 and is communicatively connected to the control assembly 500. The inflation module 140 is communicatively connected to the control assembly 500 and is used to inflate the inner cavity of the battery 600.

[0062] In this embodiment, the immersion test component 100 is provided with a workbench 110, which serves to provide space for the immersion tank 112 and a working surface 111 to support the environmental alternation test component 200 and the spray test component 300. This forms a reasonable configuration of the various test components of the battery waterproof test device, realizing the reasonable integration of the various test components. This helps to reduce the overall space occupied by the entire test device, and also effectively shortens the distance that the transfer component 400 moves the battery 600 between the various test components, thereby shortening the cycle time of battery 600 transfer and improving test efficiency.

[0063] In this embodiment, the immersion tank 112 is used to hold immersion water, wherein the liquid level can be adaptively adjusted according to the height of the battery 600 to ensure that the battery 600 is completely submerged. The opening of the immersion tank 112 extends through the working surface 111, facilitating the transfer of the battery 600 between the immersion tank 112 and other test components located on the working surface 111. It should be noted that the workbench 110 can be a frame structure, with the water tank supported within the frame structure; the workbench 110 can also be a solid workbench 110, with the immersion tank 112 directly sunken into the central area of ​​the working surface 111 of the workbench 110.

[0064] In this embodiment, a liquid level sensor 150 can also be installed in the immersion tank 112 to detect the liquid level in the immersion tank 112, so as to ensure that the water circulation module 130 is injected with sufficient water.

[0065] In this embodiment, the image acquisition module 120 is disposed inside the opening of the immersion tank 112. The image acquisition module 120 is communicatively connected to the control component 500. The image acquisition module 120 can then acquire real-time image information of the liquid surface in the immersion tank 112 from the opening position and transmit this image information to the control component 500. The control component 500 analyzes the image information to detect whether there are air bubbles, thereby effectively detecting the airtightness of the battery 600. Simultaneously, real-time monitoring via the image acquisition module 120 effectively improves the sensitivity and accuracy of leak detection. The image acquisition module 120 in this application can be a high-definition camera.

[0066] In this embodiment, the inflation module 140 is communicatively connected to the control component 500 and is used to make a sealed connection with the explosion-proof valve 610 of the battery 600 and to achieve a sealed communication with the inner cavity of the battery 600. The inflation module 140 inflates the inner cavity of the battery 600 and maintains the pressure, so as to facilitate the airtightness detection of the battery 600's casing by whether the inner cavity of the battery 600 leaks air and generates bubbles during the water immersion test.

[0067] like Figure 3 As shown, in some embodiments, the inflation module 140 includes an inflation section 141, an inflation pipeline 142, a differential pressure detection component 143, and a docking component 144. The inflation pipeline 142 is connected to the inflation section 141. The differential pressure detection component 143 is disposed in the inflation pipeline 142 and is used to detect pressure changes in the inflation pipeline 142. The docking component 144 is connected to the end of the inflation pipeline 142 away from the inflation section 141 and is used for a sealed connection with the explosion-proof valve 610 of the battery 600.

[0068] In this embodiment, the inflation module 140 is used to inflate the inner cavity of the battery 600. A differential pressure detection component 143 is provided in the inflation module 140, which can detect the pressure difference on both sides of the differential pressure detection component 143 after the battery 600 has been inflated and entered the pressure holding stage. If a pressure difference is found, it indicates that there is a local air leakage. This setting can further improve the sensitivity of the leakage test.

[0069] It should be noted that the inflation section 141 in this application can be an air pump, and the inflation pipe 142 has a certain length to ensure that after the inflation pipe 142 is connected between the inflation section 141 and the battery 600 and inflates and pressurizes the battery 600, the battery 600 can smoothly enter the water tank and be submerged below the liquid surface. The differential pressure detection component 143 can be a differential pressure sensor, at least partially disposed within the inflation pipe 142. The docking component 144 can be a quick-release connector that can be quickly installed and disassembled, enabling quick installation and disassembly of the explosion-proof valve 610 of the battery 600. The docking component 144 is sealed to the inflation pipe 142 and also sealed to the explosion-proof valve 610 of the battery 600, ensuring smooth pressure maintenance after inflation of the battery 600 and facilitating accurate detection by the differential pressure detection component 143.

[0070] like Figure 5 As shown, in some embodiments, the docking component 144 includes a flexible housing 1441, a support member 1442, and an elastic switch 1443. The flexible housing 1441 has a sealing cavity 1444 for sealing connection with the explosion-proof valve 610. The support member 1442 is disposed in the sealing cavity 1444 and sealed to the flexible housing 1441 to divide the sealing cavity 1444 into an operating cavity 1445 and an inflation cavity 1446. The inflation cavity 1446 is used to accommodate the explosion-proof valve 610. The elastic switch 1443 is disposed in the sealing cavity 1444 and connected to the flexible housing 1441. The elastic switch 1443 is sealed and embedded in the support member 1442 and partially disposed in the inflation cavity 1446. One end of the elastic switch 1443 located in the inflation cavity 1446 is provided with a suction head 1447, which is used to open or close the explosion-proof valve 610.

[0071] In this embodiment, the flexible shell 1441 is deformable, and the elastic switch 1443 is connected to the flexible shell 1441. By pressing the flexible shell 1441, the flexible shell 1441 deforms, and the elastic switch 1443 moves forward to drive the suction head 1447 to abut against the top cover 611 of the explosion-proof valve 610, and adsorb the top cover 611 of the explosion-proof valve 610. During the reset process of the elastic switch 1443, the top cover 611 of the explosion-proof valve 610 is opened, realizing the connection between the inflation chamber 1446 and the inner cavity of the battery 600, thereby realizing the inflation of the inner cavity of the battery 600 through the inflation pipe 142. After inflation reaches the preset pressure, inflation is stopped and the pressure is maintained, and the battery 600 is immersed in the immersion tank 112 for field immersion testing. Of course, the battery 600 can also be transferred to the immersion tank 112 while being inflated. Placing the battery 600 in the immersion tank 112 and submerging it in water will not affect the inflation process. After the immersion test is completed, remove the battery 600 from the tank, press the elastic switch 1443 again to reset the top cover 611 of the explosion-proof valve 610, and disconnect the elastic switch 1443 from the explosion-proof valve 610. Then, the docking component 144 can be removed from the explosion-proof valve 610 of the battery 600.

[0072] In this embodiment, the flexible housing 1441 can deform to mate with the explosion-proof valve 610 and be fitted onto the outer periphery of the explosion-proof valve 610 for a sealed connection. To maintain sealing and pressure resistance, a fastening structure such as a clamp (not shown in the figure) can be added at the connection between the flexible housing and the explosion-proof valve 610 to ensure the stability of inflation and pressure holding. This application also provides a support member 1442 to maintain the overall stability of the docking component 144 and to support and fix the elastic switch 1443 and the inflation pipeline 142. It should be noted that a silicone sealing ring can be used to seal the connection between the elastic switch 1443 and the support member 1442, and a double seal of both a silicone sealing ring and an inflation expansion ring can be used between the inflation pipeline 142 and the flexible housing 1441 and the support member 1442. The elastic switch 1443 is preferably a spring switch, where the spring can be compressed and reset multiple times, ensuring the number of times the switch can be used.

[0073] Please refer to the following: Figure 1 , Figure 2 and Figure 3 In some embodiments, the battery waterproof testing device further includes a spray testing component 300, which is disposed on one side of the immersion testing component 100 and is communicatively connected to the control component 500 for spray testing the battery 600.

[0074] In an embodiment of the present application, a spray test component 300 is further provided on one side of the immersion test component 100, so that the battery waterproof test device of the present application further integrates a spray test function, thereby realizing more modes of testing for the battery 600.

[0075] It can be understood that the spray test component 300 of the present application can specifically place the battery 600 on a spray platform and spray the battery 600 from multiple angles. A humidity monitoring unit (which can be a humidity sensor) needs to be provided inside the corresponding battery 600. The humidity data inside the battery 600 is obtained through the humidity monitoring unit, and the waterproof performance of the battery 600 is judged based on this humidity data. If the humidity inside the battery 600 is within the permitted range, it means that the spray test of the battery 600 is qualified. If the humidity inside the battery 600 exceeds the permitted range, it means that the spray test of the battery 600 is unqualified.

[0076] It should be noted that the spray test component 300 of the present application can perform spray tests of different levels according to test requirements. In particular, a waterproof test with an IPX9 waterproof level (IP is the abbreviation of Ingress Protection, which means ingress protection, X indicates that solid protection is not considered, and 9 represents the highest level of waterproof ability) can be performed. Among them, the specific test requirements of IPX9 are to use a high-pressure and high-temperature jet of water (water temperature is about 80 °C), and spray the equipment shell at a short distance (about 10 - 15 cm) through a specific nozzle. The spraying angle of the nozzle needs to cover all directions (front, back, left, right, up, down, etc.) of the battery 600 shell, and each direction is sprayed continuously for at least 30 seconds. Spraying pressure: 80 - 100 bar (about 8 - 10 MPa, which is 80 - 100 times the pressure of ordinary tap water). Water flow speed: about 100 m / s, close to the impact force of high-speed water flow.

[0077] Please refer to Figure 1 、 Figure 2 and Figure 3 In some embodiments, the spray test component 300 is arranged in the test space 240 of the environmental alternating test component 200.

[0078] In an embodiment of the present application, the spray test component 300 is arranged in the side view space of the environmental alternating test component 200. At this time, when using the transfer component 400 to transfer the battery 600, only the transfer of the battery 600 between the immersion test component 100 and the environmental alternating test component 200 needs to be completed. When the battery 600 is inside the environmental alternating test component 200, it can perform both environmental alternating tests and spray tests, thereby reducing the transfer times of the battery 600, and further improving the test efficiency.

[0079] Please refer to Figure 1 、 Figure 2 and Figure 4 In some embodiments, the environmental alternation test assembly 200 includes a slide rail 210, a first assembly module 220, a second assembly module 230, and an adjustment module 250. The slide rail 210 is mounted on a working surface 111, and its orthographic projection on the working surface 111 is outside the opening of the immersion tank 112. The first assembly module 220 is slidably connected to the slide rail 210. The second assembly module 230 is slidably connected to the slide rail 210 and is positioned opposite to the first assembly module 220. The first assembly module 220 can move along the slide rail 210 toward or away from the second assembly module 230. The first assembly module 220 and the second assembly module 230 can be sealed together to form a test space 240. The adjustment module 250 is communicatively connected to the control assembly 500 and is used to control environmental changes within the test space 240.

[0080] In this embodiment, the environmental alternation test module is used to test the sealing performance of the battery 600 by alternating environmental changes. The environment can be temperature and / or pressure. The water resistance of the sealant in the battery 600 is tested by alternating temperature and / or pressure changes. By setting a slide rail 210 on the working surface 111, and arranging a sliding first assembly module 220, a fixed second assembly module 230, and an adjustment module 250 on the slide rail 210, the opening and closing of the test space 240 can be achieved, thereby facilitating the removal or placement of the battery 600 from or into the test space 240. The first assembly module 220 and the second assembly module 230 are mounted on the immersion tank 112 using the slide rail 210. At this time, the battery 600 can be transferred between the immersion tank 112 and the test space 240 of the environmental alternation test component 200 using the transfer component 400. This facilitates rapid testing under different modes, improves testing efficiency, and allows for immersion testing after environmental alternation testing to verify the sealing performance of the battery 600 after environmental alternation testing.

[0081] It should be noted that the adjustment module 250 of this application extends at least partially into the test space 240 to facilitate the adjustment of the temperature and / or pressure within the test space 240.

[0082] Please refer to the following: Figure 1 and Figure 2 In some embodiments, when the first assembly module 220 is furthest from the second assembly module 230, the first assembly module 220 and the second assembly module 230 are located on both sides of the immersion tank 112 along the extension direction of the slide rail 210.

[0083] In this embodiment, since the battery 600 needs to be submerged in the immersion tank 112 for immersion testing, the opening of the tank is designed to allow the battery 600 to pass through. In this application, when the distance between the first assembly module 220 and the second assembly module 230 is at its maximum, the first assembly module 220 and the second assembly module 230 are located on opposite sides of the immersion tank 112. This ensures that the immersion tank 112 can be completely exposed between the first assembly module 220 and the second assembly module 230, thereby ensuring that the battery 600 can be smoothly transferred between the immersion tank 112 and the environmental alternation test component 200.

[0084] Please refer to the following: Figure 1 and Figure 2 In some embodiments, the second assembly module 230 has a housing space 231 for housing the battery 600, the housing space 231 for forming at least a portion of the test space 240, the spray test assembly 300 is disposed within the housing space 231, and the transfer assembly 400 is movable between the housing space 231 and the immersion tank 112.

[0085] In this embodiment, the second assembly module 230 has a receiving space 231. The first assembly module 220 and the second assembly module 230 are sealed together to cover the receiving space 231, thereby forming a test space 240. Therefore, the second assembly module 230 can have a support platform to enclose the receiving space 231. When the battery 600 is located in the test space 240, it can be placed on the support platform. By setting the spray test assembly 300 in the receiving space 231, the battery 600 can be supported by the support platform and sprayed, thereby further saving the volume of the entire waterproof test device and reducing the path of the battery 600. At this time, even if the battery 600 undergoes immersion test, spray test and environmental alternation test, it is only necessary to transfer the battery 600 between the immersion test assembly 100 and the environmental alternation test assembly 200. This can further improve the testing efficiency.

[0086] In this embodiment, the control component 500 can drive the first assembly module 220 to move towards the second assembly module 230 and form a sealed connection with it. For example, the slide rail 210 can be a lead screw, and the first assembly module 220 can be connected to a slider. The control component 500 controls the motor to rotate, thereby driving the first assembly module 220 to move. The first assembly module 220 and the second assembly module 230 can be sealed together using sealing foam. The sealing is achieved by the two modules abutting against and compressing the sealing foam. A locking mechanism can also be provided between them to lock and secure the first assembly module 220 and the second assembly module 230 after the sealed connection, thus forming a sealed test space 240.

[0087] Please refer to the following: Figure 1and Figure 2 In some embodiments, the second assembly module 230 has a first opening 232 and a second opening 233. Along the extending direction of the slide rail 210, the first opening 232 is located on the side of the second assembly module 230 close to the first assembly module 220, and the second opening 233 is located on the side of the second assembly module 230 away from the slide rail 210. The first opening 232 and the second opening 233 communicate with each other and are both connected to the accommodating space 231. The first assembly module 220 includes a first sealing plate 221 and a second sealing plate 222. The first sealing plate 221 is slidably connected to the slide rail 210 and can be sealed to the second assembly module 230 and cover the first opening 232. The second sealing plate 222 is connected to the side of the first sealing plate 221 away from the slide rail 210 and can be sealed to the second assembly module 230 and cover the second opening 233.

[0088] In this embodiment, by providing the second assembly module 230 with a connected first opening 232 and a second opening 233, an L-shaped opening is formed in the second assembly module 230. For a hexahedral structure, this effectively opens the two intersecting faces, facilitating the transfer of the battery 600 between the immersion tank 112 of the immersion test assembly 100 and the accommodating space 231 of the second assembly module 230, reducing the workload of the transfer assembly 400. Simultaneously, a first sealing plate 221 and a second sealing plate 222 are provided. When environmental alternation testing is required, the first sealing plate 221 seals the first opening 232, and the second sealing plate 222 seals the second opening 233, thus forming a sealed test space 240, facilitating environmental alternation testing.

[0089] It should be noted that sealing gaskets or foam can be provided at the contact points between the first sealing plate 221 and the second sealing plate 222 and the second assembly module 230 to ensure the sealing performance of the first assembly module 220 and the second assembly module 230 after connection.

[0090] Accordingly, this application also provides a battery waterproof testing method, applied to a battery waterproof testing device, which includes a water immersion testing component 100, an environmental alternation testing component 200, and a spray testing component 300. The battery waterproof testing method includes the following steps: transferring a battery 600 into the water immersion testing component 100 for water immersion testing; and / or transferring the battery 600 into the spray testing component 300 for spray testing; and / or placing the battery 600 into the environmental alternation testing component 200 for environmental alternation testing.

[0091] In this embodiment of the application, the battery waterproof testing method, based on a multi-mode battery waterproof testing device, enables the battery 600 to be transferred between various testing components for testing various performance characteristics. This not only achieves comprehensive testing of the battery 600 but also effectively improves the testing efficiency of the battery 600.

[0092] It should be noted that the battery waterproof testing device of this application may also include a control component 500, which is communicatively connected to the immersion test component 100, the environmental alternation test component 200 and the spray test component 300 respectively, so as to realize the separate control of different test modes.

[0093] like Figure 6 As shown in the embodiments of this application, the battery waterproofing test method may include the following steps:

[0094] S100: Transfer the battery 600 into the immersion test assembly 100 for immersion testing.

[0095] In this embodiment, the immersion test component 100 provides an immersion environment for the battery 600. Specifically, it can be a container capable of holding enough water to completely submerge the battery 600, ensuring that the battery 600 is fully submerged below the liquid surface. This facilitates the immersion test of the battery 600. During the immersion test, the battery 600 is submerged in water while gas at a certain pressure is introduced into it. The presence or absence of bubbles on the liquid surface is observed. If no bubbles are generated, the immersion test is considered successful; if bubbles are generated, the immersion test is considered unsuccessful, and the sealing performance needs to be checked.

[0096] In some embodiments, the immersion test assembly 100 includes an immersion tank 112, an inflation module 140, and an image acquisition module 120, wherein the image acquisition module 120 is disposed at the opening of the immersion tank 112; Figure 7 As shown, the battery 600 is transferred into the immersion test assembly 100 for immersion testing, including:

[0097] S110: Seal the output end of the inflation module 140 to the explosion-proof valve 610 of the battery 600, and make the inflation module 140 communicate with the inner cavity of the battery 600.

[0098] In this embodiment of the application, by inflating the battery 600 with air through the explosion-proof valve 610, the pressure of the inflation module 140 is greater than the internal pressure of the battery 600. Therefore, while ensuring the sealing of the explosion-proof valve 610, gas can be continuously injected into the inner cavity of the battery 600.

[0099] S120: Inflate the inner cavity of the battery 600 with air to bring the pressure inside the battery 600 to a preset pressure and maintain the pressure.

[0100] Because the internal pressure of the battery 600 needs to be lower than the specified pressure threshold of the explosion-proof valve 610 (different specifications of the explosion-proof valve 610 correspond to different pressure thresholds), the explosion-proof valve 610 can be prevented from bursting due to overpressure inside the battery 600. Therefore, the preset pressure is lower than the pressure threshold of the explosion-proof valve 610 (which can be adjusted according to specific circumstances). When the internal pressure of the battery 600 reaches the preset pressure, this pressure is maintained for testing.

[0101] S130: Transfer battery 600 into immersion tank 112 and immerse battery 600.

[0102] This application determines the waterproof performance of the battery pack 600 by testing whether the casing leaks air. The battery 600 is placed in the immersion tank 112 and submerged; the presence of air bubbles in the liquid indicates whether the battery 600 leaks. Alternatively, the battery 600 can be transferred to the immersion tank 112, submerged, and then inflated, or it can be submerged in the immersion tank 112 during the inflating process.

[0103] S140: Use the image acquisition module 120 to acquire the liquid level image information of the immersion tank 112.

[0104] S150: Obtain immersion test results based on liquid surface image information.

[0105] In this embodiment, the image acquisition module 120 is disposed within the opening of the immersion tank 112. The image acquisition module 120 can communicate with the control module. In this case, the image acquisition module 120 can acquire real-time image information of the liquid surface within the immersion tank 112 from the opening position and transmit this image information to the control component 500. The control component 500 analyzes the image information to detect whether there are air bubbles, thereby effectively detecting the airtightness of the battery 600. Simultaneously, real-time monitoring via the image acquisition module 120 effectively improves the sensitivity and accuracy of leak detection. The image acquisition module 120 in this application can be a high-definition camera.

[0106] In some embodiments, the inflation module 140 includes a differential pressure detection component 143, which transfers the battery 600 into the immersion test assembly 100 for immersion testing, and further includes:

[0107] S160: Obtain differential pressure information from differential pressure detection component 143.

[0108] S170: Obtain immersion test results based on differential pressure information.

[0109] In the embodiment of the present application, a differential pressure detection component 143 is arranged in the inflation module 140, which can detect the pressure difference on both sides of the differential pressure detection component 143 after the inflation of the battery 600 is completed and enters the pressure holding stage. If there is a pressure difference, it means that there is a local air leakage situation. This setting can further improve the sensitivity of the leakage test.

[0110] The battery waterproof test method of the present application further includes the following steps:

[0111] S200: Transfer the battery 600 to the spray test component 300 for spray test.

[0112] The spray test component 300 of the present application can specifically place the battery 600 on a spray platform and spray the battery 600 from multiple angles. A humidity monitoring unit (which can be a humidity sensor) needs to be arranged inside the corresponding battery 600. The humidity data inside the battery 600 is obtained through the humidity monitoring unit, and the waterproof performance of the battery 600 is judged based on this humidity data. If the humidity inside the battery 600 is within the permitted range, it means that the spray test of the battery 600 is qualified. If the humidity inside the battery 600 exceeds the permitted range, it means that the spray test of the battery 600 is unqualified.

[0113] The battery waterproof test method of the present application further includes the following steps:

[0114] S300: Place the battery 600 in the environmental alternating test component 200 for environmental alternating test.

[0115] In the embodiment of the present application, the environmental alternating test component 200 can specifically be a temperature / pressure alternating test component. Among them, by placing the battery 600 in a closed space and then changing the temperature and / or pressure in this space, the alternating change of temperature and / or pressure is realized, so as to test the waterproof performance of the sealant of the battery 600 after thermal expansion and contraction and / or pressure alternation, thus realizing the environmental alternating test of the battery 600.

[0116] In some embodiments, the environmental alternating test component 200 includes a first assembly module 220, a second assembly module 230 and an adjustment module 250. The second assembly module 230 has a receiving space 231. As Figure 9 shown, transferring the battery 600 to the environmental alternating test component 200 for environmental alternating test includes:

[0117] S310: Transfer the battery 600 to the receiving space 231.

[0118] In this embodiment, since the first assembly module 220 and the second assembly module 230 are initially separated from each other, the accommodating space 231 is in an open state, which facilitates the transfer of the battery 600 into the accommodating space 231.

[0119] S320: Move the first assembly module 220 to the second assembly module 230 and seal it together with the second assembly module 230 to form a sealed test space 240.

[0120] The battery waterproof testing device of this application may include a control component 500, which can drive the first assembly module 220 to move towards the second assembly module 230 and form a sealed connection with it. For example, the slide rail 210 may be a lead screw, and the first assembly module 220 may be connected to a slider. The control component 500 controls the motor to rotate, thereby driving the first assembly module 220 to move. The first assembly module 220 and the second assembly module 230 may be sealed together using sealing foam. The seal is achieved by the two modules abutting against and compressing the sealing foam. A locking mechanism may also be provided between the two modules to lock and secure them after the sealed connection, thus forming a sealed testing space 240.

[0121] S330: The internal environment of the test space 240 is adjusted using the adjustment module 250 to achieve environmental alternation.

[0122] S340: Obtain the sealing performance of battery 600 after environmental alternation.

[0123] In this embodiment of the application, the environment within the test space 240 is adjusted alternately by the adjustment module 250 to achieve the performance test of the sealant of the battery 600, thereby enabling the test of the waterproof performance of the battery 600 under different environments.

[0124] The alternating environmental changes can be alternating changes in temperature and / or pressure. If only temperature changes are being tested, different temperatures can be alternated. For example, the waterproofing of the sealant after thermal expansion and contraction can be tested in an alternating environment of -20℃ to 60℃. The overall pressure resistance of the battery 600 can be tested within a expected pressure range, and then the waterproofing performance of the battery 600 after undergoing alternating pressure changes can be tested.

[0125] In some embodiments, the spray test assembly 300 is disposed within the accommodating space 231; such as Figure 8 As shown, the battery 600 is transferred into the spray test assembly 300 for immersion testing, including:

[0126] S210: Place the battery 600 in the accommodating space 231.

[0127] S220: Spray the battery 600 with the spray test assembly 300.

[0128] S230: Acquire humidity data inside battery 600.

[0129] S240: Determines the sealing performance of battery 600 based on humidity data.

[0130] In this embodiment, the spray test assembly 300 is disposed within the accommodating space 231. The battery 600 can then be directly transferred into the accommodating space 231 for testing, facilitating environmental alternation testing and saving the battery 600 transfer step. It should be noted that the spray section of the spray test assembly 300 can simulate IPX9K waterproof high-pressure spray (water pressure 80-100 bar, flow rate 15 L / min). By installing a humidity sensor inside the battery 600, real-time humidity data can be acquired to determine if the battery 600 is leaking.

[0131] It should be noted that the order of S100, S200, and S300 in the application embodiment can be changed according to requirements, or only one or two of them can be tested.

[0132] like Figure 10 As shown, it should also be noted that in some embodiments, since the spray test assembly 300 is located within the accommodating space 231, if spray testing and environmental alternation testing are required, the battery waterproof testing method further includes:

[0133] S410: Place the battery 600 in the accommodating space 231.

[0134] S420: Move the first assembly module 220 to the second assembly module 230 and seal it together with the second assembly module 230 to form a sealed test space 240.

[0135] S430: The internal environment of the test space 240 is adjusted using the adjustment module 250 to achieve environmental alternation.

[0136] S440: Spray the battery 600 with the spray test assembly 300.

[0137] S450: Acquires humidity data from inside battery 600.

[0138] S460: Obtain the sealing performance of battery 600 after environmental alteration.

[0139] In this embodiment, after the battery 600 is transferred to the accommodating space 231, the first assembly module 220 is moved to seal the accommodating space 231 to form a test space 240. At the same time, the spray and adjustment module 250 is turned on to adjust the temperature and / or pressure in the test space 240. In this way, spray testing and environmental alternation testing can be carried out at the same time, further saving testing time and improving testing efficiency.

[0140] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0141] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0142] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0143] The above provides a detailed description of a battery waterproof testing device provided in the embodiments of this application, and uses specific examples to illustrate the principle and implementation of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solution and core idea of ​​this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A battery waterproof testing device, characterized in that, include: Immersion test kit, used for immersion testing of batteries; An environmental alternation test assembly is disposed on one side of the immersion test assembly and is used to perform environmental alternation tests on the battery. The environmental alternation test assembly includes a first assembly module and a second assembly module disposed opposite to each other. The first assembly module can move in a direction that is close to or away from the second assembly module. The first assembly module and the second assembly module can be sealed together to form a test space. A transfer component is disposed adjacent to the immersion test component and the environmental alternation test component, and is used to move the battery between the immersion test component and the environmental alternation test component; The control component is communicatively connected to the immersion test component, the environmental alternation test component, and the transfer component, respectively.

2. The battery waterproof testing device according to claim 1, characterized in that, The immersion test component includes: A workbench includes a work surface and is provided with a water immersion tank, wherein the opening of the water immersion tank is provided on the work surface; An image acquisition module is installed inside the opening of the immersion tank, and the image acquisition module is communicatively connected to the control component; The water circulation module is connected to the immersion tank and is communicatively connected to the control component. An inflation module, which is communicatively connected to the control component, is used to inflate the inner cavity of the battery.

3. The battery waterproof testing device according to claim 2, characterized in that, The inflation module includes: Inflatable part; An inflation line is connected to the inflation section; A differential pressure detection component is installed in the inflation pipeline to detect pressure changes in the inflation pipeline; A docking component is connected to the end of the inflation line away from the inflation section, and is used for a sealed connection with the explosion-proof valve of the battery.

4. The battery waterproof testing device according to claim 3, characterized in that, The docking components include: A flexible housing with a sealing cavity for sealing connection with the explosion-proof valve; A support member is disposed within the sealed cavity and is sealed to the flexible shell to divide the sealed cavity into an operating cavity and an inflation cavity, the inflation cavity being used to accommodate the explosion-proof valve; An elastic switch is disposed in the sealed cavity and connected to the flexible shell; the elastic switch is sealed and embedded in the support member and partially disposed in the inflation cavity; one end of the elastic switch located in the inflation cavity is provided with a suction head, which is used to open or close the explosion-proof valve.

5. The battery waterproof testing device according to claim 2, characterized in that, It also includes a spray test component, which is disposed on one side of the immersion test component and is communicatively connected to the control component for spray testing the battery.

6. The battery waterproof testing device according to claim 5, characterized in that, The spray test assembly is installed within the test space.

7. The battery waterproof testing device according to claim 6, characterized in that, The environmental alternation test component includes: A slide rail is mounted on the working surface, and the orthographic projection of the slide rail on the working surface is located outside the opening of the immersion tank; both the first assembly module and the second assembly module are slidably connected to the slide rail; An adjustment module, which is communicatively connected to the control component, is located on the side of the second assembly module away from the first assembly module, and is used to control environmental changes within the test space.

8. The battery waterproof testing device according to claim 7, characterized in that, When the first assembly module is furthest from the second assembly module, along the extension direction of the slide rail, the first assembly module and the second assembly module are respectively located on both sides of the immersion tank.

9. The battery waterproof testing device according to claim 7, characterized in that, The second assembly module has a receiving space for accommodating the battery, the receiving space being used to form at least a portion of the test space, the spray test assembly being disposed within the receiving space, and the transfer assembly being movable between the receiving space and the immersion tank.

10. The battery waterproof testing device according to claim 9, characterized in that, The second assembly module has a first opening and a second opening along the extension direction of the slide rail. The first opening is located on the side of the second assembly module closer to the first assembly module, and the second opening is located on the side of the second assembly module away from the slide rail. The first opening and the second opening are in communication, and both the first opening and the second opening are in communication with the accommodating space. The first assembly module includes a first sealing plate and a second sealing plate. The first sealing plate is slidably connected to the slide rail and can be sealed to the second assembly module to cover the first opening. The second sealing plate is connected to the side of the first sealing plate away from the slide rail and can be sealed to the second assembly module to cover the second opening.

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