Eight-channel cylindrical battery test fixture

Abstract

The utility model provides an eight-channel cylindrical battery test fixture, which comprises a shell, a plurality of mobile standard fixture devices, a cylindrical battery mounting plate and test probe devices, the right side of the shell is provided with a plurality of mobile standard fixture devices, and the left side of the shell is provided with a plurality of test probe devices. A cylindrical battery mounting plate is arranged between the mobile standard clamp device and the test probe device, and the beneficial effects of the utility model are that the mobile standard clamp device drives the mobile probe to open or close, so that the mobile probe is aligned with the positive electrode of the cylindrical battery in the cylindrical battery groove for testing; the multi-channel cylindrical battery testing device can simultaneously meet multi-channel cylindrical battery testing, is suitable for cylindrical batteries of different sizes and models, is high in universality and small in testing error, can conveniently adjust the contact of the cylindrical batteries, and is simple in structure, ingenious in design and low in manufacturing cost.

Description

Technical Field

[0001] This utility model relates to the field of battery testing fixture technology, and more particularly to an 8-channel cylindrical battery testing fixture. Background Technology

[0002] With the rapid development of electric vehicles, the power battery industry has been fully explored and has grown rapidly. To improve the battery density of power batteries, the country is now vigorously developing soft-pack lithium-ion batteries. All battery cells undergo rigorous testing, aging, and screening processes before leaving the factory, and battery testing fixtures are indispensable components in these processes.

[0003] During battery design and production, batteries frequently require testing equipment to examine various parameters and assess their electrical performance. In this testing process, the contact between the positive and negative terminals of the battery under test and the test points on the testing equipment is crucial. Poor contact can lead to increased contact resistance, affecting the accuracy of the test results. Therefore, the connection between the battery under test and the testing equipment places high demands on the system. During testing, fixtures are primarily used to connect the battery under test to the testing equipment, ensuring accurate transmission of information from the battery to the testing equipment.

[0004] In current battery manufacturing, due to different needs, there are various types and specifications of batteries, and the sizes of batteries of different specifications and types are also different. The distance between the positive and negative tabs of the battery varies greatly. As a result, when testing different models of batteries, it is necessary to use test fixtures corresponding to different models of batteries.

[0005] Currently, most battery testing fixtures use circular spring test probes to contact the positive and negative terminals of the battery. However, it is difficult to ensure that the circular spring test probes can make full contact with the positive and negative terminals of this type of pouch battery.

[0006] Chinese patent CN11693742A discloses a high-current testing fixture for cylindrical batteries, characterized by comprising a base plate, a fixing platform, a front fixing fixture device, an arc-shaped frame, and a rear fixing fixture device. The base plate has a fixing platform at its front end, and the front fixing fixture device is located on one side of the fixing platform. The base plate has a groove at its rear end, and the rear fixing clamp is installed in the groove. Several arc-shaped brackets are provided between the front and rear fixing clamps. This solves the problem of fixing the base to the front and rear fixing clamps simultaneously. By simultaneously rotating the front and rear fixing clamps, the distance between them can be changed. During lithium battery testing, the lithium battery is positioned between the front and rear fixing clamps, which compress the lithium battery to achieve the testing purpose. This ensures even pressure distribution across the lithium battery, improving testing results. The rear end of the plate has a groove, and the rear fixing clamp is installed in the groove, allowing for adjustment of the rear fixing clamp's length and enabling testing of batteries of different lengths. The base plate has several arc-shaped brackets to test batteries of different diameters. Summary of the Invention

[0007] The purpose of this utility model is to solve the above-mentioned technical problems by providing a novel 8-channel cylindrical battery test fixture. The moving probe is driven to open or close by a moving standard fixture device, so that the moving probe is aligned with the positive electrode of the cylindrical battery in the groove of the cylindrical battery for testing. It can simultaneously meet the testing needs of multiple channels of cylindrical batteries, and is applicable to cylindrical batteries of various sizes and models. It has high versatility, small testing error, and convenient adjustment of cylindrical battery contact. Moreover, the structure is simple, ingeniously designed, and has low manufacturing cost.

[0008] This utility model is achieved through the following technical solution:

[0009] An 8-channel cylindrical battery test fixture includes a housing, a movable standard fixture device, a cylindrical battery mounting plate, and a test probe device. Several movable standard fixture devices are located on the right side of the housing, and several test probe devices are located on the left side of the housing. The cylindrical battery mounting plate is positioned between the movable standard fixture devices and the test probe devices. The housing includes a top cover, a bottom plate, and an aviation connector. A test probe mounting hole is located on the upper left side of the top cover, and the test probe devices are installed within this hole. A mounting plate groove is located on the right side of the test probe mounting hole, and the cylindrical battery mounting plate is installed within this groove, allowing for adjustable spacing. A movable standard fixture mounting position is located on the upper right side of the top cover, and the movable standard fixture device is mounted within this groove. The upper right side of the top cover plate has a movable standard fixture mounting position. The left side of the top cover plate has an aviation plug hole. The aviation plug is embedded in the aviation plug hole on the left side of the top cover plate. The aviation plug is electrically connected to the test probe device via a channel wire. The base plate seamlessly connects the aviation plug and the channel wire to the bottom of the top cover plate. The test probe device includes a test probe support, a test probe cover plate, and test probes. The test probe support is fixedly installed in the test probe mounting hole on the upper left side of the top cover plate with screws. The test probe support has several probe holes. The test probe is embedded in the probe holes on the test probe support and is electrically connected to the aviation plug via a channel wire. The test probe cover plate seamlessly connects the test probe to the test probe support.

[0010] As a further step, the movable standard fixture device includes a movable standard guide rail, a movable standard slider, a movable standard probe mounting plate, a movable standard probe, a movable standard cover plate, a movable connecting rod, a movable standard fixture handle, and a movable standard fixed connecting seat. The movable standard guide rail is installed in the movable standard fixture mounting position on the upper right side of the upper cover plate. The movable standard guide rail is provided with a movable standard slider. The movable standard probe mounting plate is installed on the movable standard slider. The movable standard probe mounting plate has a movable probe mounting hole on its left side and a movable connecting rod mounting hole on its right side. The movable probe is installed in the movable probe mounting hole on the left side of the movable standard probe mounting plate. One end of the movable connecting rod is installed in the movable connecting rod mounting hole on the right side of the movable standard probe mounting plate, and the other end of the movable connecting rod is connected to the movable standard fixture handle. The movable standard fixture handle is connected to the movable standard fixed connecting seat. The movable standard cover plate seamlessly connects and fastens the movable standard probe mounting plate, the rear end of the movable probe, and the front end of the movable connecting rod to the movable standard probe mounting plate.

[0011] As a further step, the cylindrical battery mounting plate is provided with a plurality of cylindrical battery mounting slots, and a plurality of cylindrical batteries are provided in the cylindrical battery mounting slots, with cylindrical battery sleeves fitted onto the cylindrical batteries.

[0012] As a further step, the cylindrical battery model is 18650 or 2170. The diameter and height of the cylindrical battery model 21700 are different from those of the cylindrical battery model 18650. When testing the cylindrical battery model 18650, it is placed directly in the cylindrical battery mounting slot on the cylindrical battery mounting plate for testing. When testing the cylindrical battery model 21700, the cylindrical battery model 21700 is fitted into the cylindrical battery sleeve, and then the fitted cylindrical battery model 21700 is placed in the cylindrical battery mounting slot on the cylindrical battery mounting plate for testing.

[0013] As a further step, the movable standard probe mounting plate is U-shaped.

[0014] As a further step, the movable standard fixed connection seat includes a standard fixed connection seat body, a movable standard fixed nut, and a movable standard fixed connection bracket. The standard fixed connection seat body is fixed to the upper right side of the upper cover plate by the movable standard fixed nut. The standard fixed connection seat body is provided with a movable standard fixed connection bracket. A movable standard clamp handle is connected to the right side of the movable standard fixed connection bracket. A through hole is provided on the left side of the movable standard fixed connection bracket. The other end of the movable connecting rod passes through the through hole on the left side of the movable standard fixed connection bracket and is connected to the movable standard clamp handle.

[0015] The beneficial effects of this utility model are as follows:

[0016] (1) It has a simple structure, good stability, is easy to use, simple to operate, and small size. The moving probe is driven to open or close by the moving standard clamp device, so that the moving probe is aligned with the positive electrode of the cylindrical battery in the groove of the cylindrical battery for testing. It can simultaneously meet the testing of cylindrical batteries in multiple channels, and is applicable to cylindrical batteries of various sizes and models. It has high versatility, small test error, and convenient adjustment of cylindrical battery contact. It has a clever design and low manufacturing cost.

[0017] (2) The cylindrical battery mounting plate is provided with several cylindrical battery mounting slots, and several cylindrical batteries are provided in the cylindrical battery mounting slots. This solves the problem that the diameter and height of the cylindrical battery model 21700 are different from those of the cylindrical battery model 18650. When testing the cylindrical battery model 18650, it is placed directly in the cylindrical battery mounting slot on the cylindrical battery mounting plate for testing. When testing the cylindrical battery model 21700, the cylindrical battery model 21700 is fitted into the cylindrical battery sleeve, and then the fitted cylindrical battery model 21700 is placed in the cylindrical battery mounting slot on the cylindrical battery mounting plate for testing.

[0018] (3) An aviation plug is provided on the outer wall of the casing, which solves the problem of connecting the aviation plug to the positive and negative terminals of the cylindrical battery through the channel wire, and selecting the appropriate test according to the type or model of the cylindrical battery. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the 8-channel cylindrical battery test fixture of this utility model;

[0020] Figure 2 This is an exploded view of the 8-channel cylindrical battery test fixture of this utility model;

[0021] Figure 3 This is a schematic diagram of the shell structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the exploded structure of the shell of this utility model;

[0023] Figure 5 This is a schematic diagram of the test probe device of this utility model;

[0024] Figure 6 This is a schematic diagram of the exploded structure of the test probe device of this utility model;

[0025] Figure 7 This is a schematic diagram of the structure of the mobile standard clamping device of this utility model;

[0026] Figure 8 This is an exploded view of the mobile standard clamping device of this utility model;

[0027] Figure 9 This is a schematic diagram of the cylindrical battery mounting plate and cylindrical battery structure of this utility model;

[0028] Figure 10 This is a schematic diagram of the cylindrical battery mounting plate and the exploded structure of the cylindrical battery of this utility model;

[0029] Reference numerals: 1. Housing; 11. Top cover plate; 110. Test probe mounting hole; 111. Mounting plate groove; 112. Moving standard fixture mounting position; 113. Aviation plug hole; 12. Base plate; 13. Aviation plug; 2. Moving standard fixture device; 21. Moving standard guide rail; 22. Moving standard slider; 23. Moving standard probe mounting plate; 230. Moving probe mounting hole; 231. Moving connecting rod mounting hole; 24. Moving standard probe; 25. Moving standard cover plate; 26. Moving connecting rod; 27. Moving standard fixture handle; 28. Moving standard fixed connection seat; 280. Standard fixed connection seat body; 281. Moving standard fixing nut; 282. Moving standard fixed connection fixing bracket; 3. Cylindrical battery mounting plate; 31. Cylindrical battery mounting groove; 32. Cylindrical battery sleeve; 4. Test probe device; 41. Test probe support seat; 42. Test probe cover plate; 43. Test probe; 5. Cylindrical battery. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0032] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0033] For reference Figures 1-10As shown, an 8-channel cylindrical battery test fixture includes a housing 1, a movable standard fixture device 2, a cylindrical battery mounting plate 3, and a test probe device 4. Several movable standard fixture devices 2 are located on the right side of the housing 1, and several test probe devices 4 are located on the left side of the housing 1. The cylindrical battery mounting plate 3 is positioned between the movable standard fixture devices 2 and the test probe devices 3. The housing 1 includes an upper cover plate 11, a bottom plate 12, and an aviation connector 13. A test probe mounting hole 110 is located on the upper left side of the upper cover plate 11, and the test probe devices 4 are installed within the test probe mounting hole 110 on the upper left side of the upper cover plate 11. A mounting plate groove 111 is located on the right side of the test probe mounting hole 110, and the cylindrical battery mounting plate 3 is installed within the mounting plate groove 111. The spacing of the cylindrical battery mounting plate 3 can be adjusted within the mounting plate groove 111. A movable standard fixture mounting position 112 is located on the upper right side of the upper cover plate 11, and the movable standard fixture devices 2 are mounted on the upper cover plate. The upper cover plate 11 has an aviation plug hole 113 on the left side of the upper cover plate 11. The aviation plug 13 is embedded in the aviation plug hole 113 on the left side of the upper cover plate 11. The aviation plug 13 is electrically connected to the test probe device 4 through a channel wire. The base plate 12 seamlessly fastens the aviation plug 13 and the channel wire to the bottom of the upper cover plate 11. The test probe device 4 includes a test probe support 41, a test probe cover plate 42, and a test probe 43. The test probe support 41 is fixedly installed in the test probe mounting hole 110 on the upper left side of the upper cover plate 11 by screws. The test probe support 41 has a plurality of probe holes. The test probe 43 is embedded in the probe holes on the test probe support 41 and is electrically connected to the aviation plug 13 through a channel wire. The test probe cover plate 42 seamlessly fastens the test probe 43 to the test probe support 41.

[0034] For reference Figures 7-8As shown, the movable standard fixture device 2 includes a movable standard guide rail 21, a movable standard slider 22, a movable standard probe mounting plate 23, a movable standard probe 24, a movable standard cover plate 25, a movable connecting rod 26, a movable standard fixture handle 27, and a movable standard fixed connecting seat 28. The movable standard guide rail 21 is installed in the movable standard fixture mounting position 112 on the upper right side of the upper cover plate 11. The movable standard guide rail 21 is provided with a movable standard slider 22, and the movable standard probe mounting plate is installed on the movable standard slider. The movable standard probe mounting plate has a movable probe mounting seat on its left side. The moving standard probe mounting plate has a moving connecting rod mounting hole on its right side. The moving probe is installed in the moving probe mounting hole on the left side of the moving standard probe mounting plate. One end of the moving connecting rod is installed in the moving connecting rod mounting hole on the right side of the moving standard probe mounting plate, and the other end of the moving connecting rod is connected to the handle of the moving standard fixture. The handle of the moving standard fixture is connected to the moving standard fixed connecting seat. The moving standard cover plate seamlessly connects and fastens the moving standard probe mounting plate, the rear end of the moving probe, and the front end of the moving connecting rod to the moving standard probe mounting plate.

[0035] For reference Figures 9-10 As shown, the cylindrical battery mounting plate has a plurality of cylindrical battery mounting slots, and a plurality of cylindrical batteries are arranged in the cylindrical battery mounting slots. A cylindrical battery sleeve is fitted onto the cylindrical battery.

[0036] Preferably, the cylindrical battery model is 18650 or 2170. The diameter and height of the cylindrical battery model 21700 are different from those of the cylindrical battery model 18650. When testing the cylindrical battery model 18650, it is placed directly in the cylindrical battery mounting slot on the cylindrical battery mounting plate for testing. When testing the cylindrical battery model 21700, the cylindrical battery model 21700 is fitted into the cylindrical battery sleeve, and then the fitted cylindrical battery model 21700 is placed in the cylindrical battery mounting slot on the cylindrical battery mounting plate for testing.

[0037] Preferably, the movable standard probe mounting plate is U-shaped.

[0038] Preferably, the movable standard fixed connection seat includes a standard fixed connection seat body, a movable standard fixed nut, and a movable standard fixed connection bracket. The standard fixed connection seat body is fixed to the upper right side of the upper cover plate by the movable standard fixed nut. The standard fixed connection seat body is provided with a movable standard fixed connection bracket. A movable standard clamp handle is connected to the right side of the movable standard fixed connection bracket. A through hole is provided on the left side of the movable standard fixed connection bracket. The other end of the movable connecting rod passes through the through hole on the left side of the movable standard fixed connection bracket and is connected to the movable standard clamp handle.

[0039] Based on the disclosure and teachings of the above specification, those skilled in the art can make appropriate changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. An 8-channel cylindrical battery testing fixture, characterized in that: The device includes a housing, a movable standard clamping device, a cylindrical battery mounting plate, and a test probe device. Several movable standard clamping devices are located on the right side of the housing, and several test probe devices are located on the left side of the housing. A cylindrical battery mounting plate is positioned between the movable standard clamping devices and the test probe devices. The housing includes a top cover, a bottom plate, and an aviation connector. A test probe mounting hole is located on the upper left side of the top cover, and the test probe device is installed within this hole. A mounting plate groove is located to the right of the test probe mounting hole, and the cylindrical battery mounting plate is installed within this groove, allowing for adjustable spacing. A movable standard clamping device is located on the upper right side of the top cover, and is installed thereon. Within the movable standard fixture mounting position, the left side of the upper cover plate is provided with an aviation plug hole. The aviation plug is embedded in the aviation plug hole on the left side of the upper cover plate. The aviation plug is electrically connected to the test probe device through a channel wire. The base plate seamlessly connects the aviation plug and the channel wire to the bottom of the upper cover plate. The test probe device includes a test probe support, a test probe cover plate, and a test probe. The test probe support is fixedly installed in the test probe mounting hole on the upper left side of the upper cover plate by screws. The test probe support has several probe holes. The test probe is embedded in the probe holes on the test probe support and is electrically connected to the aviation plug through a channel wire. The test probe cover plate seamlessly connects the test probe to the test probe support.

2. The 8-channel cylindrical battery test fixture according to claim 1, characterized in that: The movable standard fixture device includes a movable standard guide rail, a movable standard slider, a movable standard probe mounting plate, a movable standard probe, a movable standard cover plate, a movable connecting rod, a movable standard fixture handle, and a movable standard fixed connecting seat. The movable standard guide rail is installed in the movable standard fixture mounting position on the upper right side of the upper cover plate. The movable standard guide rail is provided with a movable standard slider. The movable standard probe mounting plate is installed on the movable standard slider. The movable standard probe mounting plate has a movable probe mounting hole on the left side and a movable connecting rod mounting hole on the right side. The movable probe is installed in the movable probe mounting hole on the left side of the movable standard probe mounting plate. One end of the movable connecting rod is installed in the movable connecting rod mounting hole on the right side of the movable standard probe mounting plate, and the other end of the movable connecting rod is connected to the movable standard fixture handle. The movable standard fixture handle is connected to the movable standard fixed connecting seat. The movable standard cover plate seamlessly connects and fastens the movable standard probe mounting plate, the rear end of the movable probe, and the front end of the movable connecting rod to the movable standard probe mounting plate.

3. The 8-channel cylindrical battery test fixture according to claim 1, characterized in that: The cylindrical battery mounting plate is provided with a plurality of cylindrical battery mounting slots, and a plurality of cylindrical batteries are provided in the cylindrical battery mounting slots. A cylindrical battery sleeve is fitted onto the cylindrical battery.

4. The 8-channel cylindrical battery test fixture according to claim 3, characterized in that: The cylindrical battery model is 18650 or 2170. The diameter and height of the cylindrical battery model 21700 are different from those of the cylindrical battery model 18650. When testing the cylindrical battery model 18650, it is placed directly in the cylindrical battery mounting slot on the cylindrical battery mounting plate for testing. When testing the cylindrical battery model 21700, the cylindrical battery model 21700 is fitted into the cylindrical battery sleeve, and then the fitted cylindrical battery model 21700 is placed in the cylindrical battery mounting slot on the cylindrical battery mounting plate for testing.

5. The 8-channel cylindrical battery test fixture according to claim 2, characterized in that: The movable standard probe mounting plate is U-shaped.

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