Device for testing lithium battery module

Abstract

The utility model discloses a device for testing a lithium battery module, which comprises a battery rack capable of moving on a driving platform in X and Y directions, a battery bracket is detachably arranged in the battery rack, and a fixing device used for being fixed with a battery module to be tested is arranged on the battery bracket. The device for testing the lithium battery module can adapt to the change of the shape and the size of the lithium battery module through the adjustable fixing device, so that the fixing effect of the lithium battery module is improved, the safety and the stability of the lithium battery module in the testing process are ensured, more accurate and reliable testing results can be provided, and the testing efficiency is improved. The test efficiency and quality are improved, and the method has important significance for safety and reliability evaluation of the lithium battery module.

Description

Technical Field

[0001] This utility model relates to the field of battery testing equipment technology, and in particular to a testing device for lithium battery modules. Background Technology

[0002] In the field of battery manufacturing technology, lithium-ion battery modules have become an indispensable energy source for mobile electronic devices, electric vehicles, and energy storage systems due to their high energy density, long lifespan, and excellent environmental performance. With the widespread application of lithium-ion battery modules, the demand for quality testing and performance evaluation is constantly increasing. In the field of lithium-ion battery module testing technology, rigorous safety and performance testing is essential to ensure the safety and reliability of lithium-ion battery modules. Furthermore, in the field of battery rack design and manufacturing, designing battery racks that can adapt to the testing requirements of lithium-ion battery modules of different specifications while ensuring the safety and stability of the modules during testing is crucial.

[0003] Existing lithium battery module testing equipment typically uses fixed battery holders, with each holder only capable of holding one type of lithium battery module. While this design can meet the testing requirements of specific battery module sizes, different battery holders are needed when testing different sizes, wasting time and resources and increasing operational complexity. Furthermore, existing battery racks usually use fixed fixing components to secure the lithium battery modules. These components cannot adapt to changes in the shape and size of the lithium battery modules, easily leading to displacement during testing. This affects the accuracy and reliability of the test results and also poses certain safety hazards.

[0004] Existing lithium battery module testing equipment is inadequate in adapting to the testing requirements of lithium battery modules of different specifications, failing to meet diverse testing needs and reducing the versatility and practicality of the test setup. Furthermore, existing fixing components cannot accommodate changes in the shape and size of lithium battery modules, easily leading to displacement during testing, affecting the accuracy and reliability of test results, and also posing certain safety hazards. Therefore, designing a lithium battery module testing device that can adapt to the testing requirements of lithium battery modules of different specifications while ensuring the safety and stability of lithium battery modules during testing is a pressing problem to be solved in this field. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings and defects of the prior art and provide a testing device for lithium battery modules, which has the characteristics of good repeatability, easy integration and space saving.

[0006] A lithium battery module testing device includes a battery rack that can be moved in the X and Y directions on a drive platform. The battery rack has a detachable battery bracket inside, and the battery bracket has a fixing device for fixing the battery module to be tested.

[0007] The two vertical folded edges of the battery tray are connected to the battery rack via quick-release buckles.

[0008] The battery bracket has two elongated holes on its base plate for fixing the battery bracket to the battery module using a fixing device.

[0009] The base plate of the battery holder has weight-reduction holes.

[0010] The fixing device includes three sides, which are arranged perpendicularly to each other and connected as a whole, and each side has a connecting hole.

[0011] The battery rack is a rectangular battery rack, which includes four uprights arranged at the four corners, an upper rectangular frame connected to the uprights, a lower rectangular frame, and a tray support frame in the middle.

[0012] The drive platform includes an X-axis moving unit and a Y-axis moving unit. The Y-axis moving unit is arranged on the X-axis moving unit and is driven by the X-axis moving unit to move in the X direction. The battery rack is arranged on the Y-axis moving unit.

[0013] The Y-axis moving unit has a driven, movable support for supporting the battery rack.

[0014] The X-axis moving unit / Y-axis moving unit includes a motor and a lead screw mechanism connected to the motor, with linear guide rails arranged on both sides of the lead screw mechanism.

[0015] The linear guide rail consists of two rails. The linear guide rail, the lead screw mechanism, and the motor are all arranged on a base plate. The bearing support is connected to the linear guide rail of the Y-axis moving unit, and the base plate of the Y-axis moving unit is connected to the linear guide rail on the base plate of the X-axis moving unit.

[0016] This utility model of a lithium battery module testing device has wide applications in lithium battery module manufacturing technology, lithium battery module testing technology, and battery rack design and manufacturing. It can adapt to the testing needs of lithium-ion batteries of different specifications, improve the versatility and practicality of the testing rack, reduce resource waste, and greatly improve production efficiency, reduce production costs, and improve product quality and reliability for lithium battery module manufacturers.

[0017] The lithium battery module testing device of this invention, through an adjustable fixing device, can adapt to changes in the shape and size of the lithium battery module, improve the fixing effect of the lithium battery module, ensure the safety and stability of the lithium battery module during the test, provide more accurate and reliable test results, and improve the efficiency and quality of testing. Attached Figure Description

[0018] Figure 1 This is an overall schematic diagram of the lithium battery module testing device of this utility model.

[0019] Figure 2 This is a schematic diagram of the battery rack of the lithium battery module testing device of this utility model.

[0020] Figure 3 This is a schematic diagram of the battery holder on the battery rack of the lithium battery module testing device of this utility model.

[0021] Figures 4-5 These are two schematic diagrams of the fixing device of the lithium battery module testing apparatus of this utility model.

[0022] Figure 6 This is a schematic diagram of a lithium battery module mounted on the battery rack of the lithium battery module testing device of this utility model.

[0023] Figure 7 This is a schematic diagram of the lithium battery module testing device of this utility model connected to the battery bracket via a fixing device.

[0024] Figure 8 This is a schematic diagram of the mobile platform of the lithium battery module testing device of this utility model. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0026] Please see Figures 1 to 8 As shown in the figure, a lithium battery module testing device according to an embodiment of this application includes a battery rack 200 that can be moved in the X and Y directions on a drive platform. A battery bracket 204 is detachably arranged inside the battery rack, and a fixing device 205 for fixing the battery module 300 to be tested is arranged on the battery bracket 204.

[0027] In some embodiments, the two vertical folded edges 2044 of the battery tray 204 are connected to the battery rack via quick-release clips 206. The battery rack and battery tray are fixed together using quick-release clips, allowing for the separation and fixing of battery trays of various sizes from the battery rack through the opening and closing of the clips. This enables the use of different sized battery trays with the battery rack to accommodate different types of lithium battery modules. Thus, multiple detachable battery trays can be used, each holding one lithium battery module. These trays can be replaced according to the testing requirements of different lithium battery module sizes, improving the versatility and practicality of the test rack and reducing resource waste.

[0028] In this embodiment, the battery bracket 204 is a crucial component for fixing and supporting the lithium battery module to be tested, playing a vital role in ensuring the stability and safety of the battery module during testing. In one embodiment, the battery bracket 204 can be formed by bending and wire cutting a steel plate, and its overall surface contact with the lithium battery module effectively disperses the pressure from the lithium battery module.

[0029] In some embodiments, the base plate 2041 of the battery bracket 204 has two elongated or rectangular slots 2043 for fixing the battery bracket to the lithium battery module using a fixing device. The elongated slots are designed according to the fixing requirements of the corresponding battery module and can be used to fix battery modules of different lengths. Alternatively, when the lithium battery module itself has sufficient rigidity and is fixed at the bottom, the lithium battery module can also be directly fixed to the elongated or rectangular slots on the angle steel support of the battery bracket 204 of the battery rack 200, eliminating the need for the battery bracket 204. This allows for precise fixing of the lithium battery module to the bottom of the battery bracket according to its specific shape and size, further improving the safety and stability of the lithium battery module during testing.

[0030] In some embodiments, the base plate 2041 of the battery bracket 204 has weight reduction holes 2042, especially in the middle of the base plate, which can achieve weight reduction and improve the aesthetics of the battery bracket itself.

[0031] In some embodiments, the fixing device 205 includes three sides, such as a first side 2051 (connected and fixed to the lithium battery module), a second side 2052, and a third side 2053 (the second side 2052 and the third side 2053 are connected and fixed to the battery bracket). The three sides are arranged perpendicularly to each other and connected as a whole, with holes for connecting the fixing device on each side. The fixing device is a connector for fixing the battery bracket and the lithium battery module. It can be made of bent and welded steel plate and uses bolt connection to connect and fix the battery bracket and the lithium battery module, improving installation efficiency. However, the fixing device involved is not limited to this; other forms of fixing devices, such as L-shaped or straight-line types, are also possible. In this application, each battery bracket is equipped with a fixing device for fixing the lithium battery module to be tested. This device can be adjusted according to changes in the shape and size of the lithium battery module, improving the fixing effect of the lithium battery module and ensuring the safety and stability of the lithium battery module during the test.

[0032] In this application, each battery bracket is equipped with a fixing device for securing the lithium battery module. Each fixing device can be adjusted in position and shape to accommodate changes in the shape and size of the lithium battery module. For example, when the length of the lithium battery module changes, the length of the fixing device can be adjusted to ensure stable fixation of the lithium battery module.

[0033] In some embodiments, the battery rack 200 includes a rectangular battery rack as the main support for the battery module. It can be welded together from square tubes 201 and includes four columns arranged at the four corners, an upper rectangular frame connected to the columns, a lower rectangular frame, and a middle tray support frame. In particular, the middle tray support frame is formed by four angle steels 202, with corresponding positioning holes 203 (arranged on the short angle steel) and elongated holes (arranged on the long angle steel) on the corresponding angle steels. It can cooperate with the battery bracket and / or battery module to lock and position the battery bracket and / or battery module.

[0034] In some embodiments, the drive platform can achieve precise movement in the X and Y directions, including an X-axis movement unit 101 and a Y-axis movement unit 102. The Y-axis movement unit is arranged on the X-axis movement unit and is driven by the X-axis movement unit to move in the X direction. The battery rack is arranged on the Y-axis movement unit. In some embodiments, the Y-axis movement unit has a driven, movable support 103 for supporting the battery rack. In some embodiments, the X-axis movement unit / Y-axis movement unit includes a motor and a lead screw mechanism connected to the motor, with linear guide rails arranged on both sides of the lead screw mechanism. Specifically, the X-axis movement unit includes an X-axis motor 1013 and an X-axis lead screw mechanism 1012 connected to the X-axis motor, as well as a linear guide rail 1011. The Y-axis movement unit includes a Y-axis motor 1023 and a Y-axis lead screw mechanism 1022 connected to the Y-axis motor, as well as a Y-axis linear guide rail 1021.

[0035] In some embodiments, there are two linear guides, and the linear guides, lead screw mechanism and motor are all arranged on a base plate (including X-axis moving unit base plate 1010 and Y-axis moving unit base plate 1020). The bearing support is connected to the linear guide of the Y-axis moving unit, and the base plate of the Y-axis moving unit is connected to the linear guide on the base plate of the X-axis moving unit.

[0036] The battery is fixed to a mobile platform that can move in the X and Y directions, which is highly flexible, precise, repeatable, easy to integrate and space-saving, further improving the safety and stability of the lithium battery module during the test.

[0037] In this embodiment, the mobile platform is equipped with a high-precision positioning system, which ensures the motion accuracy of the test fixture in the X and Y axes, thereby improving the accuracy and reliability of the test results. Since the motion of the mobile platform is driven by a precisely controlled motor, the movement of the lithium battery module test in the X and Y axes can achieve good repeatability, thus improving the efficiency and consistency of the test.

[0038] In this embodiment, the mobile platform has a standardized interface and control system, which can be easily integrated with other testing equipment and control systems to achieve automated testing. The mobile platform can fix the testing fixtures in a small space, thereby saving the floor space of the testing system.

[0039] In addition, in this application, the grounding point of the battery rack is locally coated with conductive paint.

[0040] The battery rack and its mating structure in this application embodiment can achieve stable fixation, ensuring the accuracy and reliability of test results, while improving the versatility and practicality of the test rack, reducing resource waste, and possessing advantages such as high flexibility, high precision, good repeatability, easy integration, and space saving.

[0041] When testing battery modules using the battery racks in this embodiment, different detachable battery trays of different specifications are selected according to the testing requirements of different specifications of lithium battery modules. Each battery tray is used to hold one lithium battery module. For example, a 180Ah battery tray can be selected to hold a 180Ah lithium battery module, and a 280Ah battery tray can be selected to hold a 280Ah lithium battery module. The battery trays are then fixed to the lithium battery modules using the configured fixing devices (if no battery tray is needed, the lithium battery modules can be directly and precisely fixed to the bottom of the battery tray according to their specific shape and size).

[0042] The battery rack containing the lithium battery module is placed on a mobile platform. The mobile platform in the X and Y directions provides multi-dimensional freedom of movement, enabling the lithium battery module and battery rack to adapt more flexibly to different testing requirements.

[0043] The following section uses a portion of the test items for a lithium battery module (appearance, insulation withstand voltage, liquid cooling pipeline withstand voltage, drop test) as an example to illustrate the usage process:

[0044] First, the module undergoes an appearance and dimensional quality inspection. After the inspection is completed, it is moved to the low-pressure system in the X direction via a moving platform to complete the insulation withstand voltage test. Then, it is moved in the X direction to the liquid cooling pipeline withstand voltage test area to complete the liquid cooling pipeline withstand voltage test. Finally, it is moved in the Y direction to the drop test platform. The lithium battery module is disassembled using a quick-release structure to complete the test.

[0045] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows:

[0046] 1. Improve versatility and practicality:

[0047] This utility model discloses a lithium battery module testing device that can be connected to multiple detachable battery holders, thereby adapting to the testing requirements of lithium-ion batteries of different specifications. This improves the versatility and practicality of the testing rack and reduces resource waste. This is significantly superior to the design of fixed battery holders in existing technologies, allowing the same battery rack to be used for various specifications of lithium battery modules, greatly improving the flexibility and efficiency of use.

[0048] 2. Enhances fixation effect and safety:

[0049] Each battery bracket is equipped with a fixing device for securing the lithium battery module. Each fixing device is used to secure the fixing part of the lithium battery module and can adapt to changes in the shape and size of the lithium battery module, improving the fixing effect and ensuring the safety and stability of the lithium battery module during testing. This contrasts sharply with the problem that the fixing components in the prior art cannot adapt to changes in the shape and size of the lithium battery module. The design of this technical solution greatly reduces the risk of displacement of the lithium battery module during testing, improves the accuracy and reliability of the test results, and also enhances the safety of use.

[0050] 3. Simplify the operation process:

[0051] Due to the modular design of this invention, when replacing lithium battery modules of different specifications, it is not necessary to replace the entire battery rack; only the corresponding battery bracket needs to be disassembled and installed. This simplifies the operation process and improves work efficiency. This is a significant advantage for users who need to frequently conduct tests on lithium battery modules of different specifications.

[0052] In summary, compared with existing technologies, this technical solution not only improves the versatility and practicality of the lithium battery module testing device, enhances the fixing effect and safety, but also simplifies the operation process, demonstrating significant advantages and broad application prospects.

[0053] The design concept and manufacturing process of the lithium battery module testing device of this utility model are innovative, and can provide new ideas and methods for the design and manufacturing of battery racks.

[0054] The lithium battery module testing device of this invention has broad application prospects and market demand in multiple fields such as lithium battery module manufacturing, testing, and battery rack design and manufacturing.

[0055] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic features of this utility model.

[0056] Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of the present invention is defined by the appended claims rather than the foregoing description. Thus, it is intended to encompass all variations falling within the meaning and scope of the equivalents of the claims within the present invention.

[0057] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A testing apparatus for lithium battery modules, characterized in that, The device includes a battery rack capable of X and Y-axis movement on a drive platform. The drive platform includes an X-axis movement unit and a Y-axis movement unit, each including a motor and a lead screw mechanism connected to the motor. A battery tray is detachably arranged inside the battery rack. The battery rack includes four columns arranged at the four corners, an upper rectangular frame connected to the columns, a lower rectangular frame, and a central tray support frame. The battery tray holds a lithium battery module and is connected to the lithium battery module via surface contact. An adjustable fixing device is provided on the battery tray to fix the battery module to be tested. The fixing device uses bolts to connect and fix the battery tray and the lithium battery module.

2. The lithium battery module testing apparatus according to claim 1, characterized in that, The two vertical folded edges of the battery tray are connected to the battery rack via quick-release buckles.

3. The lithium battery module testing apparatus according to claim 1, characterized in that, The base plate of the battery bracket has two elongated holes for fixing the battery bracket to the battery module using a fixing device.

4. The lithium battery module testing apparatus according to claim 1, characterized in that, The base plate of the battery holder has weight-reduction holes.

5. The testing apparatus for lithium battery modules according to claim 1, characterized in that, The fixing device includes three sides, which are arranged perpendicularly to each other and connected as a whole, and each side has a connection hole.

6. The lithium battery module testing apparatus according to claim 1, characterized in that, The battery rack is a rectangular battery rack, including four uprights arranged at the four corners, an upper rectangular frame connected to the uprights, a lower rectangular frame, and a tray support frame in the middle.

7. The testing apparatus for lithium battery modules according to any one of claims 1-6, characterized in that, The Y-axis moving unit is arranged on the X-axis moving unit and is driven by the X-axis moving unit to move in the X direction, while the battery rack is arranged on the Y-axis moving unit.

8. The testing apparatus for lithium battery modules according to claim 7, characterized in that, The Y-axis moving unit has a driven, movable support for supporting the battery rack.

9. The testing apparatus for lithium battery modules according to claim 8, characterized in that, Linear guide rails are arranged on both sides of the lead screw mechanism.

10. The testing apparatus for lithium battery modules according to claim 9, characterized in that, The linear guide is composed of two rails. The linear guide, the lead screw mechanism, and the motor are all arranged on a base plate. The bearing support is connected to the linear guide of the Y-axis moving unit, and the base plate of the Y-axis moving unit is connected to the linear guide on the base plate of the X-axis moving unit.

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