Battery cell rapid detection tool

Abstract

The utility model relates to the technical field of detection equipment, in particular to a battery cell rapid detection tool which comprises a base plate, two limiting blocks are symmetrically connected to the upper surface of one end of the base plate, and a moving assembly is connected to the upper surface of the other end of the base plate. The moving assembly comprises two L-shaped plates symmetrically connected to the upper surface of the base plate, one ends of the two L-shaped plates are fixedly connected through a baffle, a rotating rod is in threaded connection with the L-shaped plates, a moving plate is slidably connected between the L-shaped plates, one end of the rotating rod is rotatably connected to the moving plate, and two contact assemblies are located on the two sides of the rotating rod and connected to the moving plate in an inserted mode. And two through holes are symmetrically formed in the baffle plate. According to the utility model, the problem that the probe is difficult to stably contact with the positive and negative electrodes of the battery cell is solved, the detection efficiency is obviously improved, and the requirement of manually supporting the battery cell by an operator is reduced.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, specifically a tooling for rapid testing of battery cells. Background Technology

[0002] As the basic building block of a battery, a battery cell consists of a positive electrode material (usually a lithium compound), a negative electrode material (mostly carbon materials), an electrolyte, and a separator. These components work together to store and release electrical energy. Lithium ions are transported between the positive and negative electrodes through the electrolyte and the separator. The separator, as an insulating material, prevents short circuits while allowing lithium ions to pass through. Depending on the casing material and shape, battery cells can be classified into aluminum-cased cells, pouch cells (polymer cells), and cylindrical cells, and are widely used in electronic devices and electric vehicles as the core unit for energy storage. After production, battery cells undergo numerous tests, such as capacity testing, discharge testing, charge testing, internal resistance testing, cycle life testing, temperature testing, safety testing, and leakage current testing.

[0003] However, in most of the aforementioned battery cell testing projects, the majority of tests require the use of probes to contact the positive and negative terminals of the battery cell. However, in practice, securing the probes at the positive and negative terminals presents certain difficulties. Furthermore, if the operator needs one hand to hold the battery cell while performing the test with the other, it not only increases operational inconvenience but may also significantly reduce work efficiency. Utility Model Content

[0004] This utility model proposes a rapid testing fixture for battery cells, which aims to overcome the current technical difficulties, namely, the difficulty in stably fixing the positive and negative contact probes during the battery cell testing process, and the fact that operators must use one hand to stabilize the battery cell while using the other hand to perform the test. Such operation is not only inconvenient, but also reduces work efficiency.

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

[0006] A rapid testing fixture for battery cells includes a base plate, with two limiting blocks symmetrically connected to the upper surface of one end of the base plate, and a moving component connected to the upper surface of the other end of the base plate.

[0007] Specifically, the moving component includes two L-shaped plates symmetrically connected to the upper surface of the base plate. One end of the two L-shaped plates is fixedly connected by a baffle. A rotating rod is threadedly connected to the L-shaped plate. A moving plate is slidably connected between the L-shaped plates. One end of the rotating rod is rotatably connected to the moving plate. Two contact components are inserted into the moving plate on both sides of the rotating rod. Two through holes are symmetrically opened on the baffle.

[0008] A snap-fit ​​component is provided on one side of the limiting block and on both the base plate and the bottom of the L-shaped plate. A battery cell is placed on the base plate between the limiting block and the moving component. A pressure plate that is snapped into the upper end of the battery cell is provided.

[0009] Furthermore, the contact assembly includes an insulating spacer, on which a plurality of fixed sleeves are fixedly connected. One end of each fixed sleeve is provided with an external thread, and the other end of each fixed sleeve is slidably connected to a contact rod. A spring is sleeved on the contact rod, and the two ends of the spring abut against the end of the fixed sleeve and the edge of the contact head of the contact rod, respectively.

[0010] Furthermore, the insulating spacer and the through hole are located on the same axis.

[0011] Furthermore, a slide rail is provided on the inner wall of the L-shaped plate, and the two ends of the movable plate are provided with slide grooves that are adapted to the slide rail.

[0012] Furthermore, the limiting block is provided with mounting holes, and the limiting block is connected to the base plate by bolts in the mounting holes.

[0013] Furthermore, the snap-fit ​​component includes a fixing lug connected to the base plate by bolts, and a lead screw is hinged to the upper end of the fixing lug, with a fastening block connected to the upper thread of the lead screw.

[0014] Furthermore, both ends of the pressure plate are provided with grooves that are compatible with the lead screw.

[0015] Compared with existing technologies, it has the following improvements and advantages:

[0016] 1. This utility model, through the configuration of a base plate, limiting block, moving component, pressure plate, and snap-fit ​​device, allows the battery cell to be placed on the base plate during testing, positioned between the limiting block and the moving component. The pressure plate covers the cell and is secured by the snap-fit ​​device. The operator rotates a rotating rod, causing the external thread to interact with the internal thread of the baffle, thereby driving the moving plate forward. As the moving plate advances, the contact head of the contact component precisely engages with the positive and negative terminals of the battery cell for testing. This utility model not only solves the problem of probes having difficulty stably contacting the positive and negative terminals of the battery cell but also significantly improves testing efficiency and reduces the need for the operator to manually support the battery cell. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a rapid battery cell testing fixture proposed in this utility model.

[0018] Figure 2 This is a schematic diagram of the structure of a battery cell rapid testing fixture after the pressure plate is removed, as proposed in this utility model.

[0019] Figure 3This is a schematic diagram of the structure of a battery cell rapid testing fixture after removing the pressure plate and the battery cell, as proposed in this utility model.

[0020] Figure 4 This is a schematic diagram of the moving component structure of a rapid battery cell testing fixture proposed in this utility model.

[0021] Figure 5 This is a schematic diagram of the moving component of a rapid cell testing fixture proposed in this utility model.

[0022] Figure 6 This is a schematic diagram of the contact component structure of a rapid cell testing fixture proposed in this utility model.

[0023] Figure 7 This is a schematic diagram of the pressure plate structure of a rapid battery cell testing fixture proposed in this utility model.

[0024] In the diagram: 1. Base plate; 2. Limiting block; 3. Moving component; 301. L-shaped plate; 3011. Slide rail; 302. Baffle; 303. Rotating rod; 304. Moving plate; 3041. Slide groove; 305. Contact component; 3051. Insulating sleeve; 3052. Fixing sleeve; 3053. Contact rod; 30531. Contact head; 3054. Spring; 306. Through hole; 4. Snap-fit ​​component; 5. Battery cell; 6. Pressure plate; Detailed Implementation

[0025] 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.

[0026] Reference Figures 1 to 7 A rapid testing fixture for battery cells includes a base plate 1. Two limiting blocks 2 are symmetrically connected to the upper surface of one end of the base plate 1, and a moving component 3 is connected to the upper surface of the other end of the base plate 1. The moving component 3 includes two L-shaped plates 301 symmetrically connected to the upper surface of the base plate 1. One end of the two L-shaped plates 301 is fixedly connected by a baffle 302. A rotating rod 303 is threaded onto the L-shaped plates 301. A moving plate 304 is slidably connected between the L-shaped plates 301. One end of the rotating rod 303 is rotatably connected to the moving plate 304. Two contact components 305 are inserted into the moving plate 304 on both sides of the rotating rod 303. Two through holes 306 are symmetrically opened on the baffle 302. A snap-fit ​​component 4 is provided on one side of the limiting block 2 and on both the base plate 1 and the bottom of the L-shaped plate 301. A battery cell 5 is placed between the limiting block 2 and the moving component 3 and on the base plate 1. A pressure plate 6 is provided at the upper end of the battery cell 5 and snapped by the snap-fit ​​component 4.

[0027] In this embodiment: when the battery cell 5 needs to be tested, the battery cell 5 is placed on the base plate 1 located between the limiting block 2 and the moving component 3, and the pressure plate 6 is placed on the upper surface of the battery cell 5 and secured with the snap-fit ​​component 4. At this time, the bottom end of the battery cell 5 abuts against the limiting block 2. The rotating rod 303 is rotated by hand, and the external thread on the rotating rod 303 will rotate and advance in the internal thread hole of the baffle 302. The advancing rotating rod 303 will push the moving plate 304 forward, and the advancing moving plate 304 will drive the contact component 305 inserted on it to contact the positive and negative contacts of the battery cell, so that testing can be performed.

[0028] It should be noted that: First, the limiting block 2 can be made of POM material, because POM has high strength, high rigidity, insulation and wear resistance, making it an ideal material choice; Second, the surfaces of the base plate 1, L-shaped plate 301, baffle 302, moving plate 304 and pressure plate 6 are all covered with a plastic layer, which can serve as insulation; Third, the moving plate 304 has mounting holes that are compatible with the insulating sleeve 3051, allowing the insulating sleeve 3051 to be securely inserted into the mounting holes.

[0029] In the above embodiments, in order to enable the contact component 305 to make better contact with the positive and negative contacts of the battery cell 5, the following embodiments can be adopted:

[0030] The contact assembly 305 includes an insulating spacer 3051, on which several fixed sleeves 3052 are fixedly connected. One end of the fixed sleeve 3052 is provided with an external thread, and the other end of the fixed sleeve 3052 is slidably connected to a contact rod 3053. A spring 3054 is sleeved on the contact rod 3053, and the two ends of the spring 3054 abut against the end of the fixed sleeve 3052 and the edge of the contact head 30531 of the contact rod 3053, respectively.

[0031] In this embodiment: Reference Figures 1 to 7 When the moving component 3 moves forward, the end of the contact head 30531 will first contact the positive and negative contacts of the battery cell 5. Then, as the moving plate 304 continues to move forward, the contact head 30531 will press the contacts, thus the contact head 3051 will push the contact rod 3053 to slide into the fixed sleeve 3052. When the moving plate 304 stops moving, the contact head 30531 will compress the spring 3054. The spring force of the spring 3054 returning will keep the contact head 30531 always against the positive and negative contacts of the battery cell 5, thus avoiding the problem of poor contact.

[0032] It should be noted that the insulating spacer 3051 can be made of POM material. POM material ensures both rigidity and strength while also guaranteeing insulation, making it an ideal material.

[0033] The insulating sleeve 3051 and the through hole 306 are located on the same axis. This arrangement allows the connector and wires of the test equipment to pass smoothly through the through hole and connect to the external thread of the fixed sleeve 3052. At the same time, it also allows the end of the fixed sleeve 3052 of the contact component 305 on the moving plate 304 to pass through the through hole 306 when the moving plate 304 moves backward, without being blocked by the baffle 302.

[0034] The inner wall of the L-shaped plate 301 is provided with a slide rail 3011, and the two ends of the movable plate 304 are provided with slide grooves 3041 that are adapted to the slide rail 3011.

[0035] The limiting block 2 has a mounting hole 201, and the limiting block 2 is connected to the base plate 1 by bolts in the mounting hole 201.

[0036] The snap-fit ​​component 4 includes a fixing lug 401 that is connected to the base plate 1 by bolts. The upper end of the fixing lug 401 is hinged to a lead screw 402, and the lead screw 402 is threaded to a fastening block 403.

[0037] The pressure plate 6 has grooves 601 on both sides that are adapted to the lead screw 402.

[0038] Working principle: When the battery cell 5 needs to be tested, the battery cell 5 is placed on the base plate 1 located between the limiting block 2 and the moving component 3, and the pressure plate 6 is placed on the upper surface of the battery cell 5. The lead screw 402 is inserted into the groove 601 of the pressure plate 6, and then the fastening block 403 on the lead screw 402 is rotated so that the fastening block 403 presses down on the upper surface of the pressure plate 6. At this time, the bottom end of the fixed battery cell 5 abuts against the limiting block 2. The rotating rod 303 is rotated by hand, and the external thread on the rotating rod 303 will rotate in the internal thread hole of the baffle 302. In this way, the rotating rod 303 will rotate on the baffle 302 and push the moving plate 304 forward. 304 will drive the contact component 305 on it to move, and then the end of the contact head 30531 will first make contact with the positive and negative contacts of the cell 5. Then, as the moving plate 304 continues to move forward, the contact head 30531 will squeeze the contacts, so the contact head 3051 will push the contact rod 3053 to slide into the fixed sleeve 3052. When the moving plate 304 stops moving, the contact head 30531 will compress the spring 3054. The spring force of the spring 3054 will make the contact head 30531 always abut against the positive and negative contacts of the cell 5. At this time, the cell can be tested by connecting the device to the external thread of the fixed sleeve 3052.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A kind of quick detection tool of battery cell, including base plate (1), it is characterized in that: Two limiting blocks (2) are symmetrically connected to the upper surface of one end of the base plate (1), and a moving assembly (3) is connected to the upper surface of the other end of the base plate (1); The moving assembly (3) comprises two L-shaped plates (301) symmetrically connected to the upper surface of the base plate (1), one end of the two L-shaped plates (301) is fixedly connected through a baffle (302), a rotating rod (303) is threadedly connected to the L-shaped plate (301), a moving plate (304) is slidably connected between the L-shaped plates (301), one end of the rotating rod (303) is rotatably connected to the moving plate (304), two contact assemblies (305) are inserted into the moving plate (304) and located on both sides of the rotating rod (303), two through holes (306) are symmetrically formed in the baffle (302). A clamping piece (4) is arranged on one side of the limiting block (2) and on the bottom end of the L-shaped plate (301), an electric core (5) is arranged on the base plate (1) between the limiting block (2) and the moving assembly (3), and the upper end of the electric core (5) is provided with a pressing plate (6) clamped by the clamping piece (4).

2. The battery cell rapid detection tool of claim 1, wherein: The contact assembly (305) comprises an insulating sleeve (3051), a plurality of fixing sleeves (3052) are fixedly connected to the insulating sleeve (3051), one end of the fixing sleeve (3052) is provided with an external thread, the other end of the fixing sleeve (3052) is slidably connected with a contact rod (3053), the contact rod (3053) is sleeved with a spring (3054), and the two ends of the spring (3054) respectively abut against the end of the fixing sleeve (3052) and the edge of a contact head (30531) of the contact rod (3053).

3. The battery cell rapid detection tool of claim 2, wherein: The insulating sleeve (3051) is located on the same axis as the through hole (306).

4. The battery cell rapid detection tool of claim 1, wherein: A sliding rail (3011) is arranged on the inner wall of the L-shaped plate (301), and sliding grooves (3041) compatible with the sliding rail (3011) are formed at both ends of the moving plate (304).

5. The battery cell rapid detection tool of claim 1, wherein: An installation hole (201) is formed in the limiting block (2), and the limiting block (2) is connected with the base plate (1) through a bolt in the installation hole (201).

6. The battery cell rapid detection tool of claim 1, wherein: The clamping piece (4) comprises a fixed lug (401) connected with the base plate (1) through a bolt, a lead screw (402) is hinged to the upper end of the fixed lug (401), and a fastening block (403) is threadedly connected to the lead screw (402).

7. The battery cell rapid detection tool of claim 6, wherein: Recesses (601) compatible with the lead screw (402) are formed at both sides of the pressing plate (6).

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