A lithium battery BMS protection board test rack

Abstract

The utility model belongs to lithium battery BMS protection board detection technical field, specifically disclose a kind of lithium battery BMS protection board test rack, including detection platform and rotary table, the upper surface of the detection platform is rotatably connected with support column, the inside fixed connection of the rotary table has mounting plate, the mounting plate is connected with support column by a group of bolt, by the support column rotation connection rotary table on detection platform, cooperate the first limiting mechanism on rotary table and the second limiting mechanism of detection platform right side, it can when to lithium battery BMS protection board detection to the rest lithium protection board is disassembled, when rotary table first limiting mechanism with the protection board of loading is rotated to detection area, N-shaped plugboard is positioned by the cooperation round corner of easy insertion round corner and insertion slot, electric push rod drives detection probe to detect, while, rotary table other side empty station can synchronously unload next protection board, to be able to avoid single only detection one protection board's efficiency bottleneck.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery BMS protection board testing technology, and in particular to a lithium battery BMS protection board test fixture. Background Technology

[0002] The Battery Management System (BMS) is the link between the battery and the user. It is mainly used for secondary batteries and aims to improve battery utilization and prevent overcharging and over-discharging. The BMS is usually integrated into a circuit board. Before the BMS leaves the factory, its power performance and other aspects need to be tested, which requires the use of a lithium battery BMS protection board test fixture.

[0003] Existing lithium battery BMS protection board test fixtures typically require placing the protection board under test inside a limiting device for positioning and limiting before testing. This is done after the test is completed, and only then can another lithium battery BMS protection board be installed and tested. In this process, each protection board must undergo the entire "limiting-testing-removal" operation, meaning that testing one protection board cannot simultaneously perform the loading and unloading of another. This testing method results in only one protection board being processed per testing cycle, leading to low testing efficiency. Utility Model Content

[0004] The purpose of this invention is to solve the problem in the existing lithium battery BMS protection board test rack that can only process one protection board in a single test cycle, and to propose a lithium battery BMS protection board test rack.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A lithium battery BMS protection board test fixture includes a test platform and a turntable. A supporting rotating column is rotatably connected to the upper surface of the test platform. An installation plate is fixedly connected inside the turntable, and the installation plate is connected to the supporting rotating column by a set of bolts. A first limiting mechanism is provided above the turntable, including a limiting frame mounted on the turntable. A set of slots is formed on the upper surface of the test platform, and each slot has two rounded corners on its top edge. A second limiting mechanism is provided on the right side of the test platform, including an N-shaped insert plate and a limiting groove. The limiting groove is mounted on the outer surface of the test platform, and the N-shaped insert plate and the limiting groove are rotatably connected by a rotating shaft. One end of the N-shaped insert plate has two rounded corners for easy insertion. An electric push rod is provided above the test platform, and a detector is installed at the output end of the electric push rod. A set of detection probes is installed at the detection end of the detector.

[0007] Preferably, the inner wall of the limiting frame is slidably connected with four guide rods, one end of each guide rod is fixedly connected to a side limiting plate, and the top edge of each side limiting plate is provided with an arc-shaped rounded corner.

[0008] Preferably, a back plate is fixedly connected to the other end of each guide rod, and a spring is wound around the outer surface of each guide rod. The two ends of each spring are fixedly connected to the back plate and the limiting frame, respectively.

[0009] Preferably, a pull-up plate is installed on the upper surface of the N-shaped insert.

[0010] Preferably, the front of the testing platform is provided with an ejection mechanism, the ejection mechanism includes a positioning plate, the positioning plate is fixedly connected to the testing platform, a push rod is slidably connected to the inner wall of the positioning plate, a push handle is fixedly connected to the bottom end of the push rod, and an ejection plate is fixedly connected to the top end of the push rod.

[0011] Preferably, the turntable has a set of ejection through holes inside, each ejection through hole being located at the center of the limiting frame and corresponding to the ejection plate.

[0012] Preferably, a mounting frame is installed on the upper surface of the testing station, and the electric push rod is installed inside the mounting frame.

[0013] Compared with the prior art, the present invention provides a lithium battery BMS protection board test fixture, which has the following beneficial effects.

[0014] 1. This utility model connects the turntable to the support column on the testing platform. With the first limiting mechanism on the turntable and the second limiting mechanism on the right side of the testing platform, it is possible to disassemble and assemble other lithium protection boards while testing the lithium battery BMS protection board. When the turntable rotates the first limiting mechanism carrying the protection board to the testing area, the N-shaped insert is inserted into the slot for positioning through the matching rounded corners of the insert and the slot. The electric push rod drives the testing probe to perform the test. At the same time, an empty station on the other side of the turntable can be loaded and unloaded simultaneously, thereby avoiding the efficiency bottleneck of only being able to test one protection board at a time.

[0015] 2. This utility model utilizes the cooperation of the side limiting plate, guide rod, and spring in the first limiting mechanism. When the protective plate is inserted into the limiting frame, the arc-shaped rounded corner at the top of the side limiting plate guides the alignment. The spring compression generates elastic force to adaptively clamp the protective plate, avoiding damage from rigid clamping. After the test is completed, the push handle of the ejection mechanism drives the push rod, causing the ejection plate to non-contactly lift the protective plate through the ejection through hole. The spring simultaneously resets and releases the side limiting plate, preventing manual dragging from causing the solder joints of the protective plate to fall off or the circuit to be damaged, thus achieving non-destructive testing and disassembly. Attached Figure Description

[0016] Figure 1This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of the turntable, the first limiting mechanism, the slot, the mating fillet, and the ejection through hole of this utility model;

[0018] Figure 3 This is an exploded structural diagram of the turntable, the second limiting mechanism, the slot, and the mating fillet of this utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the testing platform, turntable, ejection mechanism, and ejection through hole of this utility model;

[0020] Figure 5 This is a schematic diagram showing the connection between the testing platform, the supporting rotating column, the mounting plate, and the turntable of this utility model.

[0021] In the picture:

[0022] 1. Testing table; 2. Support column; 3. Mounting plate; 4. Turntable; 5. First limiting mechanism; 501. Guide rod; 502. Side limiting plate; 503. Rounded corner; 504. Back plate; 505. Spring; 506. Limiting frame; 6. Second limiting mechanism; 601. Pull-up plate; 602. N-shaped insert plate; 603. Conveyor rounded corner; 604. Limiting groove; 7. Slot; 8. Mating rounded corner; 9. Ejection mechanism; 901. Push handle; 902. Push rod; 903. Positioning plate; 904. Ejection plate; 10. Ejection through hole; 11. Mounting bracket; 12. Electric push rod; 13. Detector; 14. Testing probe. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Reference Figure 1-5 A lithium battery BMS protection board test rack includes a test platform 1 and a turntable 4. The upper surface of the test platform 1 is rotatably connected to a supporting rotating column 2. The interior of the turntable 4 is fixedly connected to a mounting plate 3. The mounting plate 3 and the supporting rotating column 2 are connected by a set of bolts. The turntable 4 can switch between multiple positions through rotational connection, which facilitates parallel operation of testing and loading / unloading.

[0025] A first limiting mechanism 5 is provided above the turntable 4. The first limiting mechanism 5 includes a limiting frame 506, which is installed on the turntable 4 to provide initial positioning space for the protective plate and facilitate subsequent elastic clamping operations.

[0026] The inner wall of the limiting frame 506 is slidably connected with four guide rods 501. One end of each guide rod 501 is fixedly connected to a side limiting plate 502. The top edge of each side limiting plate 502 is provided with an arc-shaped rounded corner 503. The arc-shaped rounded corner 503 guides the lithium battery BMS protection board to insert, avoiding hard contact that could damage it.

[0027] Each guide rod 501 has a back plate 504 fixedly connected to its other end. A spring 505 is wound around the outer surface of each guide rod 501. Both ends of each spring 505 are fixedly connected to the back plate 504 and the limiting frame 506, respectively. The spring 505... Figure 2 In its natural state, it will be compressed when pushed by the lithium battery BMS protection board. The elastic force of the spring 505 drives the side limit plate 502 to clamp the protection board in four directions.

[0028] The upper surface of the testing table 1 is provided with a set of slots 7, and the top edge of each slot 7 is provided with two mating rounded corners 8. The mating rounded corners 8 and the easy-to-insert rounded corners 603 of the N-shaped insert plate 602 are mated to achieve guidance and error prevention when the turntable 4 is positioned.

[0029] A second limiting mechanism 6 is provided on the right side of the testing table 1. The second limiting mechanism 6 includes an N-shaped insert plate 602 and a limiting groove 604. The limiting groove 604 is installed on the outer surface of the testing table 1. The N-shaped insert plate 602 and the limiting groove 604 are rotatably connected by a rotating shaft. The insertion and removal action of the N-shaped insert plate 602 is realized by rotating the rotating shaft. The structure is simple and the positioning is reliable.

[0030] Two convenient insertion rounded corners 603 are provided on the bottom edge of one end of the N-shaped insert plate 602. A pull-up plate 601 is installed on the upper surface of the N-shaped insert plate 602. The convenient insertion rounded corners 603 reduce insertion resistance, and the pull-up plate 601 facilitates manual operation of the insert plate positioning by the operator.

[0031] An electric push rod 12 is installed above the testing table 1. A mounting bracket 11 is installed on the upper surface of the testing table 1. The electric push rod 12 is installed inside the mounting bracket 11. The mounting bracket 11 provides stable support for the electric push rod 12, ensuring that the testing probe 14 is pressed down vertically for testing.

[0032] A detector 13 is installed at the output end of the electric push rod 12. A set of detection probes 14 are installed at the detection end of the detector 13. The electric push rod 12 can drive the detection probes 14 to contact the protection board. The detector 13 can use the detection probes 14 to detect performance parameters such as overcharge, over-discharge, and internal resistance of the lithium battery BMS protection board. This is a mature existing technology.

[0033] The front of the testing table 1 is provided with an ejection mechanism 9, which includes a positioning plate 903. The positioning plate 903 is fixedly connected to the testing table 1. A push rod 902 is slidably connected to the inner wall of the positioning plate 903. The positioning plate 903 restricts the movement trajectory of the push rod 902 to ensure that the ejection action is smooth and reliable.

[0034] A push handle 901 is fixedly connected to the bottom end of the push rod 902, and an ejector plate 904 is fixedly connected to the top end of the push rod 902. A set of ejector through holes 10 are opened inside the turntable 4. Each ejector through hole 10 is located at the center of the limit frame 506 and corresponds to the ejector plate 904. The ejector plate 904 is driven by the push handle 901 to lift the protective plate, so as to achieve quick disassembly and avoid damage to the lithium battery BMS protection board by manual hard dragging.

[0035] Working principle: The testing platform 1 supports the turntable 4 via the supporting rotating column 2, allowing the turntable 4 to rotate to switch work positions. A first limiting mechanism 5 is installed on the turntable 4 to limit the lithium battery BMS protection board to be tested. A second limiting mechanism 6 is installed on the right side of the testing platform 1 to position the turntable 4 at the testing position. The electric push rod 12 drives the detector 13 and the testing probe 14 to move downward and perform power-on performance testing on the protection board. The ejection mechanism 9 is used to quickly eject the protection board after testing, forming a cyclical operation process of "loading-unloading-testing-removal".

[0036] The lithium battery BMS protection board is placed in the limiting frame 506 of the first limiting mechanism 5. The edge of the protection board pushes the side limiting plate 502 to slide along the guide rod 501. The compression spring 505 achieves elastic clamping and positioning. The arc-shaped rounded corner 503 at the top of the side limiting plate 502 guides the protection board to be inserted smoothly, avoiding hard collisions that could damage the circuit board.

[0037] Rotating the turntable 4 allows the first limiting mechanism 5, which carries the protective plate, to be rotated to the corresponding area of ​​the detector 13 and the detection probe 14. The N-shaped insert plate 602 of the second limiting mechanism 6 rotates through the rotating shaft, and its bottom rounded corner 603 aligns with the slot 7 on the detection table 1. It then engages with the rounded corner 8 at the top of the slot 7 to insert into the slot 7, thereby achieving precise positioning and locking of the turntable 4.

[0038] Mounting bracket 11 mounts electric push rod 12. Electric push rod 12 drives detector 13 to move downward. Detection probe 14 contacts the detection contact of protection board to complete the detection of performance parameters such as overcharge, over-discharge, and internal resistance. Existing detector 13 can already perform these detection functions and is a mature technology.

[0039] During the inspection process, the empty workstation on the other side of turntable 4 can simultaneously load the next protective plate, realizing parallel "inspection-loading and unloading" operations.

[0040] After the test is completed, the electric push rod 12 drives the detector 13 to reset. The push handle 901 of the ejection mechanism 9 is operated, and the push rod 902 slides upward along the positioning plate 903, pushing the ejection plate 904 to lift the protective plate through the ejection through hole 10 of the turntable 4, so that it is separated from the limit frame 506.

[0041] Spring 505 resets and pushes side limit plate 502 to release the protective plate, allowing the operator to quickly remove the tested protective plate and simultaneously load a new plate to be tested into an empty workstation. Then, the turntable 4 is rotated to enter the next testing cycle.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lithium battery BMS protection board test fixture, comprising a test stage (1) and a turntable (4), characterized in that, The upper surface of the testing table (1) is rotatably connected to a supporting rotating column (2). An installation plate (3) is fixedly connected inside the turntable (4). The installation plate (3) is connected to the supporting rotating column (2) by a set of bolts. A first limiting mechanism (5) is provided above the turntable (4). The first limiting mechanism (5) includes a limiting frame (506), which is installed on the turntable (4). A set of slots (7) is provided on the upper surface of the testing table (1), and each slot (7) has two mating rounded corners (8) on its top edge. A second... The limiting mechanism (6) includes an N-shaped insert plate (602) and a limiting groove (604). The limiting groove (604) is installed on the outer surface of the detection table (1). The N-shaped insert plate (602) and the limiting groove (604) are rotatably connected by a rotating shaft. Two easy-to-insert rounded corners (603) are provided on the bottom edge of one end of the N-shaped insert plate (602). An electric push rod (12) is provided above the detection table (1). A detector (13) is installed at the output end of the electric push rod (12). A set of detection probes (14) is installed at the detection end of the detector (13).

2. The lithium battery BMS protection board test fixture according to claim 1, characterized in that, The inner wall of the limiting frame (506) is slidably connected with four guide rods (501), and one end of each guide rod (501) is fixedly connected with a side limiting plate (502). The top edge of each side limiting plate (502) is provided with an arc-shaped rounded corner (503).

3. The lithium battery BMS protection board test fixture of claim 2, wherein, Each guide rod (501) has a back plate (504) fixedly connected to its other end. Each guide rod (501) has a spring (505) wound around its outer surface. The two ends of each spring (505) are fixedly connected to the back plate (504) and the limiting frame (506), respectively.

4. The lithium battery BMS protection board test fixture of claim 1, wherein, A pull-up plate (601) is mounted on the upper surface of the N-shaped insert (602).

5. A lithium battery BMS protection board test fixture according to claim 1, characterized in that, The front of the testing platform (1) is provided with an ejection mechanism (9). The ejection mechanism (9) includes a positioning plate (903). The positioning plate (903) is fixedly connected to the testing platform (1). A push rod (902) is slidably connected to the inner wall of the positioning plate (903). A push handle (901) is fixedly connected to the bottom end of the push rod (902). An ejection plate (904) is fixedly connected to the top end of the push rod (902).

6. A lithium battery BMS protection board test fixture according to claim 5, characterized in that, The turntable (4) has a set of push-out through holes (10) inside. Each push-out through hole (10) is located at the center of the limiting frame (506) and corresponds to the push-out plate (904).

7. A lithium battery BMS protection board test fixture according to claim 1, characterized in that, The upper surface of the testing station (1) is equipped with a mounting frame (11), and the electric push rod (12) is installed inside the mounting frame (11).

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