Battery positioning device for acupuncture test

Abstract

The utility model discloses a battery positioning device for a needling test, which is characterized in that the battery positioning device comprises a bottom plate, a positioning plate is vertically arranged on one side of the bottom plate, and the positioning plate and the bottom plate are arranged in an L shape; the side, facing the middle of the bottom plate, of the positioning plate is provided with a V-shaped groove extending to the bottom plate in the vertical direction, the bottom plate is provided with a vertically-through receding hole, and the receding hole is located in the middle area of the V-shaped groove. The bottom plate is provided with a discharging groove which is transversely arranged in a penetrating mode, and the discharging groove is communicated with the receding hole. And a strong magnet for adsorbing the battery shell is embedded in the side wall of the V-shaped groove. The device has the advantages of being simple in structure, convenient to operate and use, suitable for different diameters and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production detection, in particular to a battery positioning device used for a needle puncture test. Background Art

[0002] Lithium-ion battery is a rechargeable battery that mainly relies on the movement of lithium ions between the positive electrode and the negative electrode to work. During the charging and discharging process, Li+ is embedded and deintercalated back and forth between the two electrodes: when charging, Li+ is deintercalated from the positive electrode and embedded into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; the opposite is true during discharge. Large cylindrical batteries are a type of battery that has attracted much attention in the field of new energy vehicles. They have the advantages of high energy density, strong and fast charging, high safety, and long life. With the development of electric vehicles, large cylindrical batteries have been promoted in the field of electric vehicles.

[0003] The safety of lithium-ion batteries is a technical indicator that people are most concerned about. For lithium-ion batteries, they must undergo safety tests in extremely harsh environments or conditions before leaving the factory, such as puncture, extrusion, heavy impact, combustion, overcharge and discharge, and short circuit tests. Among them, the battery puncture test is one of the detection indicators. Before conducting a battery puncture test, the battery needs to be fixed to facilitate puncture. However, most of the existing fixing devices match the shape and size of a specific model of battery, and cannot be well applied to other models of large cylindrical batteries with different diameters. In addition, the existing fixing devices will enclose the cylindrical battery, which will block the explosion-proof valve and affect the function of the explosion-proof valve. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is: how to provide a battery positioning device which has a simple structure, is easy to operate and can be applied to cylindrical batteries of different diameters.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A battery positioning device for a needle puncture test, characterized in that it includes a base plate, a positioning plate is vertically arranged on one side of the base plate, and the positioning plate and the base plate are arranged in an L shape; the positioning plate has a V-shaped groove extending vertically to the base plate on one side facing the middle of the base plate, and the base plate has a vertically through-set clearance hole, and the clearance hole is located in the middle area of ​​the V-shaped groove; the base plate has a horizontally through-set discharge groove, and the discharge groove is connected to the clearance hole; a strong magnet for adsorbing a battery shell is embedded in the side wall of the V-shaped groove.

[0007] In use, place the bottom of the cylindrical battery on the bottom plate, and place the cylindrical surface of the battery into the V-shaped groove. Since strong magnets are embedded in the side walls of the V-shaped groove, the strong magnets can adsorb the battery housing, thereby fixing the cylindrical battery on the positioning plate. At the same time, since the positioning plate and the bottom plate are arranged in an L shape, when the positioning plate is placed horizontally with the V-shaped groove facing upward, a needle puncture test can be performed on the side of the cylindrical battery; when the bottom plate is placed horizontally, a needle puncture test can be performed on the top of the cylindrical battery. At this time, the relief hole on the bottom plate may be blocked by the test platform, but since there is a discharge groove on the bottom plate, once the explosion-proof valve bursts, the ejecta can also be discharged through the discharge groove.

[0008] Further, the edge of the relief hole has a stepped hole formed by outward expansion, and the depth of the stepped hole is less than the depth of the discharge groove; a replaceable support plate is fitted in the stepped hole, and the support plate has a through avoidance hole.

[0009] In this way, for cylindrical batteries of different sizes, a more suitable support plate can be replaced. In addition, since the depth of the stepped hole is less than the depth of the discharge groove, even if the support plate is placed on the stepped hole, the avoidance hole, the relief hole and the discharge groove can still communicate, ensuring that the ejecta from the bursting of the explosion-proof valve can be discharged smoothly.

[0010] Further, the positioning plate has a mounting groove arranged perpendicular to the bottom plate direction, and the mounting groove is close to the V-shaped groove; the strong magnet is embedded in the mounting groove.

[0011] Further, a plurality of the mounting grooves are evenly arranged along the V-shaped contour of the V-shaped groove.

[0012] Further, the mounting grooves are symmetrically arranged at both ends of the positioning plate, the bottom of the positioning plate is provided with threaded holes, and the bottom plate is provided with countersunk bolt holes corresponding to the threaded holes and penetrating from bottom to top. The positioning plate is fixed on the bottom plate by bolts passing through the countersunk bolt holes.

[0013] Further, the included angle between the two side walls of the V-shaped groove is 90°. In this way, it can be applicable to the positioning of square batteries.

[0014] In summary, the utility model has the advantages of simple structure, convenient operation and use, and being applicable to different diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the battery positioning device.

[0016] Figure 2 It is a schematic diagram of the disassembled state of the support plate 6.

[0017] Figure 3Schematic diagram of the state for end acupuncture.

[0018] Figure 4 Schematic diagram of the state for side acupuncture. Specific implementation mode

[0019] The following further elaborates on the present utility model in conjunction with the embodiments.

[0020] During specific implementation: As Figure 1 and Figure 2 shown, a battery positioning device for acupuncture tests includes a bottom plate 1. One side of the bottom plate 1 is vertically provided with a positioning plate 2, and the positioning plate 2 and the bottom plate 1 are arranged in an L shape; one side of the positioning plate 2 facing the middle of the bottom plate 1 has a V-shaped groove 3 extending vertically to the bottom plate 1. The bottom plate 1 has a through hole 4 vertically penetrating it, and the through hole 4 is located in the middle area of the V-shaped groove 3; the bottom plate 1 has a discharge groove 5 horizontally penetrating it, and the discharge groove 5 communicates with the through hole 4; a strong magnet for adsorbing the battery case is embedded in the side wall of the V-shaped groove 3. The positioning plate 2 has a mounting groove arranged perpendicular to the direction of the bottom plate 1, and the mounting groove is close to the V-shaped groove 3; and a plurality of them are evenly distributed along the V-shaped contour of the V-shaped groove 3. A total of 6 are provided in this embodiment, and the end face shape of the mounting groove is rectangular. The strong magnet is embedded in the mounting groove. The mounting grooves are symmetrically arranged at both ends of the positioning plate 2. The bottom of the positioning plate 2 is provided with threaded holes (not shown in the figure), and the bottom plate 1 is provided with countersunk bolt holes (not shown in the figure) corresponding to the threaded holes and penetrating from bottom to top. The positioning plate 2 is fixed to the bottom plate 1 by bolts passing through the countersunk bolt holes.

[0021] As Figure 2 shown, the edge of the through hole 4 has a stepped hole formed by outward expansion, and the depth of the stepped hole is less than the depth of the discharge groove 5; a replaceable support plate 6 is fitted in the stepped hole, and the support plate 6 has a through hole 7 penetrating it. For batteries of different models, the position of the through hole 7 is set according to the position of the explosion-proof valve, and it may be located in the middle of the support plate or close to the edge of the support plate.

[0022] During use, according to the model of the battery, select the support plate and place it on the stepped hole. Place one end of the cylindrical battery on the bottom plate and the support plate, put the cylindrical surface of the battery into the V-shaped groove, and use the strong magnet embedded in the side wall of the V-shaped groove to adsorb the cylindrical battery for positioning. During the end acupuncture test, as Figure 3As shown, place the bottom plate on the platform. At this time, the explosion-proof valve of the cylindrical battery is facing the avoidance hole on the supporting plate. During acupuncture, the cylindrical battery is axially stressed and finally acts on the bottom plate and the supporting plate. At this time, the V-shaped groove will not be subject to external forces. The adsorption force applied by the strong magnet to the cylindrical battery is mainly used to assist in keeping the battery vertical. When performing the side acupuncture test, place the positioning plate on the platform with the V-shaped groove facing up. As Figure 4 shown, during acupuncture, the cylindrical battery is subjected to a vertical puncture force and finally balances with the supporting force acting on the cylindrical battery by the V-shaped groove. That is to say, the adsorption force of the strong magnet on the cylindrical battery in this embodiment is mainly used to quickly fit the cylindrical battery with the V-shaped groove so as to better perform the acupuncture test.

[0023] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A battery positioning device for a needle penetration test, characterized in that: The invention comprises a bottom plate (1), a positioning plate (2) being vertically arranged on one side of the bottom plate (1), the positioning plate (2) and the bottom plate (1) being arranged in an L-shape; a side of the positioning plate (2) facing the middle of the bottom plate (1) having a V-shaped groove (3) extending vertically to the bottom plate (1); the bottom plate (1) having a vertically penetrating clearance hole (4), the clearance hole (4) being located in the middle area of ​​the V-shaped groove (3); the bottom plate (1) having a horizontally penetrating discharge groove (5), the discharge groove (5) being connected to the clearance hole (4); and a strong magnet for adsorbing a battery shell is embedded in the side wall of the V-shaped groove (3).

2. The battery positioning device for a needle penetration test according to claim 1, characterized in that: The edge of the clearance hole (4) has a step hole formed by expanding outwards, and the depth of the step hole is less than the depth of the discharge groove (5); a replaceable support plate (6) is matched in the step hole, and the support plate (6) has a through-going avoidance hole (7).

3. The battery positioning device for a needle penetration test according to claim 1, characterized in that: The positioning plate (2) has a mounting groove arranged perpendicular to the bottom plate (1), the mounting groove being close to the V-shaped groove (3); the strong magnet is embedded in the mounting groove.

4. The battery positioning device for a needle penetration test according to claim 3, characterized in that: A plurality of mounting grooves are evenly distributed along the V-shaped profile of the V-shaped groove (3).

5. The battery positioning device for a needle penetration test according to claim 3, characterized in that: The mounting grooves are symmetrically arranged at both ends of the positioning plate (2); a threaded hole is arranged at the bottom of the positioning plate (2); countersunk bolt holes corresponding to the threaded holes are arranged on the bottom plate (1) from bottom to top; the positioning plate (2) is fixed to the bottom plate (1) by bolts passing through the countersunk bolt holes.

6. The battery positioning device for a needle penetration test according to claim 3, characterized in that: The end surface shape of the mounting groove is rectangular.

7. The battery positioning device for a needle penetration test according to claim 1, characterized in that: The included angle between the two side walls of the V-shaped groove (3) is 90°.

Images