Charging and discharging safety protection assembly for sodium ion battery pack

Abstract

The utility model provides a charge and discharge safety protection assembly for a sodium ion battery pack, two cable terminals are embedded above a mounting plate, two terminals of the sodium ion battery pack are arranged on the two corresponding cable terminals, positioning pressing sleeves are symmetrically arranged on the front side and the rear side of the lower surface of a pressing plate, and the positioning pressing sleeves are arranged on the lower surface of the pressing plate. And a pressing rod is movably installed in the middle of the pressing plate, the bottom end of the pressing rod is fixed to the bottom plate, and the bottom end of the positioning pressing sleeve is pressed above the wiring terminal. Compared with the prior art, the utility model has the following beneficial effects: the pressing plate can simultaneously place the two positioning pressing sleeves above the two wiring terminals and fix the two wiring terminals, so that the test can be carried out, the wiring terminals and the parts, close to the wiring terminals, of wires can be shielded, so that the wiring terminals and the parts, close to the wiring terminals, of the wires cannot be directly exposed outside, the safety is improved, and the test efficiency is improved. The installation time is reduced, and the test efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the field of battery packs, and in particular relates to a charging and discharging safety protection component for a sodium ion battery pack. Background Art

[0002] Sodium-lithium battery packs are designed according to customer requirements. Since the structure, appearance, weight, capacity, voltage, and input and output current of each type of lithium battery pack are different, the electronic components in each part are basically different, so the charging and discharging plugs will also be different. Before each type of lithium battery pack cycle test, the plugs will be frequently replaced. At present, the production process uses two copper noses stacked together and fixed with screws, and then wrapped with insulating tape. The Chinese patent with announcement number CN210224533U discloses a lithium battery pack charging and discharging wiring device, which simplifies the wiring steps. The device can perform charging and discharging tests on lithium battery packs in a simple, efficient and safe manner, and can effectively reduce the incorrect wiring method and the influence of overcurrent during the test, saving wiring time. In the above structure, the wiring terminal of the battery pack is placed on the second end body of the external wiring copper nose, and then the plug is pressed into the notch to fix it. The plug and the notch are connected by deformation. After a long period of pressing and disassembly, the gap between them will become larger, resulting in an unstable connection, poor stability, and low safety. To this end, we designed a charging and discharging safety protection structure for sodium-ion battery panels to solve this problem. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a charging and discharging safety protection component for a sodium ion battery pack to solve the problems raised in the above background technology.

[0004] The utility model is realized by the following technical scheme: a charging and discharging safety protection component for a nano-ion battery pack, comprising a bottom plate, a plurality of mounting plates distributed at equal intervals are linearly arranged on the left side of the upper surface of the bottom plate, two cable terminals are embedded above each of the mounting plates, and a positioning copper rod is protruded above the cable terminals, a sodium-ion battery pack is placed above the bottom plate, and two terminal blocks of the sodium-ion battery pack are placed on the corresponding two cable terminals;

[0005] Guide columns are vertically fixed at the four corners of the upper surface of the mounting plate, and pressing plates are slidably arranged on the four guide columns. Positioning sleeves are symmetrically arranged on the front and back sides of the lower surface of the pressing plate, and a pressing rod is movably installed in the middle of the pressing plate, the bottom end of the pressing rod is fixed on the bottom plate, and the bottom end of the positioning sleeve is pressed onto the top of the terminal.

[0006] Furthermore, the two cable terminals on the mounting plate are divided into a positive terminal and a negative terminal, and the positive terminal and the negative terminal are electrically connected to the test circuit through a connecting wire. The terminal is divided into a positive pole and a negative pole, which can be sleeved on the positioning copper rod and contact the cable terminal, so that it can be quickly positioned and is not easy to fall off, thereby improving the firmness.

[0007] Furthermore, a protective ring is integrally formed below the outer ring surface of the positioning sleeve. When the bottom end of the positioning sleeve contacts the terminal, the bottom end of the protective ring contacts the upper surface of the mounting plate. The inner diameter of the protective ring is larger than the outer diameter of the cable terminal. The protective ring can be sleeved on the outside of the cable terminal and the terminal, thereby separating the cable terminal and the terminal from the outside, so that external objects will not contact the cable terminal and the terminal, thereby improving safety.

[0008] Furthermore, a notch is provided on the front side of the outer ring surface of the protective ring, and an extension cover is extended on the front side of the notch. The extension cover can be sleeved on the wires of the terminal block, and then the test circuit is started for testing, so that the fingers of personnel will not come into contact with the exposed parts of the wires, thereby improving safety.

[0009] Furthermore, each of the guide columns is sleeved with a lifting spring, which is placed between the pressing plate and the mounting plate, and the upper and lower ends of the lifting spring are respectively abutted against the pressing plate and the mounting plate. The pressing plate can be suspended in the air, and there is a certain distance between the pressing plate and the mounting plate, which is convenient for the placement of the wiring terminals.

[0010] Furthermore, the pressing rod is rotatably mounted on the pressing plate through a bearing, and the lower end of the pressing rod passes through the pressing plate and is placed below it. A threaded locking portion is provided below the outer ring surface of the pressing rod, and a locking groove is provided in the middle of the mounting plate. The locking portion is threadedly connected to the locking groove. After the pressing plate is pressed to make the positioning sleeve contact with the wire terminal, the pressing rod can be twisted to fix the bottom end of the pressing rod to the locking groove, thereby preventing the pressing plate from moving up, thereby improving firmness and enhancing safety.

[0011] After adopting the above technical solution, the beneficial effects of the utility model are as follows: by arranging multiple mounting plates above the bottom plate, the mounting plates are provided with cable terminals for contacting the wiring terminals, and the pressing plates can simultaneously place two pressing sleeves above the two wiring terminals and fix them, so that testing can be performed, and the wiring terminals and the parts of the wires close to the wiring terminals can be shielded so that they are not directly exposed to the outside, thereby improving safety, reducing installation time, and improving testing efficiency;

[0012] By rotatably setting a pressing rod on the pressing plate, a locking portion is set at the bottom end of the pressing rod, which can be fixed on the mounting plate, so that the pressing plate will not move up and down, the connection is firm, and it will not fall off, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 The utility model is a schematic diagram of the overall structure of a charging and discharging safety protection component for a sodium ion battery pack.

[0015] Figure 2 for Figure 1 Left and right isometric drawings of the.

[0016] Figure 3 for Figure 1 Schematic diagram of the structure without the pressure plate installed.

[0017] Figure 4 for Figure 3 Enlarged schematic diagram at point A in the middle.

[0018] Figure 5 It is a schematic diagram of the structure of the mounting plate and the positioning sleeve.

[0019] In the figure, 1, bottom plate; 2, sodium ion battery pack; 21, terminal; 3, mounting plate; 31, locking groove; 4, pressing plate; 5, positioning sleeve; 51, extension cover; 52, protective ring; 6, pressing rod; 61, locking part; 7, guide column; 8, cable terminal; 81, positioning copper rod; 9, lifting spring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figures 1 to 5The utility model provides a technical solution: a charging and discharging safety protection component for a sodium ion battery pack, comprising a bottom plate 1, a plurality of equally spaced mounting plates 3 are linearly arranged on the left side of the upper surface of the bottom plate 1, two cable terminals 8 are embedded above each mounting plate 3, and a positioning copper rod 81 is formed protruding above the cable terminals 8, a sodium ion battery pack 2 is placed above the bottom plate 1, and two terminal blocks 21 of the sodium ion battery pack 2 are placed on the corresponding two cable terminals 8;

[0022] Guide columns 7 are vertically fixed at the four corners of the upper surface of the mounting plate 3, and pressing plates 4 are slidably arranged on the four guide columns 7. Positioning sleeves 5 are symmetrically arranged on the front and rear sides of the lower surface of the pressing plate 4, and a pressing rod 6 is movably installed in the middle of the pressing plate 4. The bottom end of the pressing rod 6 is fixed on the bottom plate 1, and the bottom end of the positioning sleeve 5 is pressed on top of the wiring terminal 21.

[0023] The two cable terminals 8 on the mounting plate 3 are divided into a positive terminal and a negative terminal, and the positive terminal and the negative terminal are electrically connected to the test circuit through a connecting wire. The terminal 21 is divided into a positive pole and a negative pole, which can be sleeved on the positioning copper rod 81 and contact the cable terminal 8, so that it can be quickly positioned and is not easy to fall off, thereby improving the firmness.

[0024] A protective ring 52 is integrally formed below the outer ring surface of the positioning sleeve 5. When the bottom end of the positioning sleeve 5 contacts the terminal 21, the bottom end of the protective ring 52 contacts the upper surface of the mounting plate 3. The inner diameter of the protective ring 52 is larger than the outer diameter of the cable terminal 8. The protective ring 52 can be sleeved on the outside of the cable terminal 8 and the terminal 21, thereby separating the cable terminal 8 and the terminal 21 from the outside, so that external objects will not contact the cable terminal 8 and the terminal 21, thereby improving safety.

[0025] A notch is provided on the front side of the outer ring surface of the protective ring 52, and an extension cover 51 is extended from the front side of the notch. The extension cover 51 can be sleeved on the wire of the terminal 21, and then the test circuit is started for testing, so that the fingers of the personnel will not come into contact with the exposed part of the wire, thereby improving safety.

[0026] A lifting spring 9 is sleeved on each guide column 7, and the lifting spring 9 is placed between the pressing plate 4 and the mounting plate 3, and the upper and lower ends of the lifting spring 9 are respectively in contact with the pressing plate 4 and the mounting plate 3. The pressing plate 4 can be suspended in the air, and there is a certain distance between the pressing plate 4 and the mounting plate 3, which is convenient for the placement of the wiring terminal 21.

[0027] The pressing rod 6 is rotatably mounted on the pressing plate 4 through a bearing, and the lower end of the pressing rod 6 passes through the pressing plate 4 and is placed below it. A threaded locking portion 61 is provided below the outer ring surface of the pressing rod 6. A locking groove 31 is provided in the middle of the mounting plate 3. The locking portion 61 is threadedly connected to the locking groove 31. After the pressing plate 4 is pressed to make the positioning sleeve 5 contact with the wire terminal, the pressing rod 6 can be twisted to fix the bottom end of the pressing rod 6 to the locking groove 31, so that the pressing plate 4 will not move up, the firmness is good, and the safety is improved.

[0028] As an embodiment of the utility model: when testing the sodium ion battery pack 2, the sodium ion battery pack 2 is placed on the base plate 1, and then the two wiring terminals 21 on the wires are respectively sleeved on the corresponding positioning copper rods 81 and contacted with the cable terminal 8, and then the mounting plate 3 is pressed downward as a whole by the pressing rod 6. When the bottom end of the pressing rod 6 contacts the locking groove 31, the pressing rod 6 is rotated so that the locking portion 61 at the bottom end of the pressing rod 6 is screwed into the locking groove 31. When it is completely locked, the protective ring 52 is sleeved on the outside of the wiring terminal 21 and contacts the upper surface of the mounting plate 3, and the lower end surface of the positioning sleeve 5 is pressed above the wiring terminal 21, and the wiring terminal 21 is pressed on the cable terminal 8. The extension cover 51 is also placed outside the wire of the wiring terminal 21. At this time, the test circuit can be connected and the test can be carried out;

[0029] By arranging a plurality of mounting plates 3 above the bottom plate 1, the mounting plates 3 are provided with cable terminals 8 for contacting the wiring terminals 21, and the pressing plate 4 can simultaneously place two pressing sleeves 5 above the two wiring terminals 21 and fix them, so that the test can be performed, and the wiring terminals 21 and the parts of the wires close to the wiring terminals 21 can be shielded so that they are not directly exposed to the outside, thereby improving safety, reducing installation time, and improving test efficiency;

[0030] By rotatably setting the pressing rod 6 on the pressing plate 4, a locking portion 61 is set at the bottom end of the pressing rod 6, which can be fixed on the mounting plate 3, so that the pressing plate 4 will not move up and down, the connection is firm, and it will not fall off, thereby improving safety.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A charge and discharge safety protection component for a sodium ion battery pack, comprising a bottom plate (1), characterized in that: A plurality of mounting plates (3) are linearly arranged at equal intervals on the left side of the upper surface of the bottom plate (1), two cable terminals (8) are embedded above each of the mounting plates (3), and a positioning copper rod (81) is formed protruding above the cable terminals (8), a sodium ion battery pack (2) is placed above the bottom plate (1), and two terminal blocks (21) of the sodium ion battery pack (2) are placed on the corresponding two cable terminals (8); Guide columns (7) are vertically fixed at the four corners of the upper surface of the mounting plate (3), and the four guide columns (7) are provided with pressing plates (4) for sliding up and down. Positioning sleeves (5) are symmetrically provided on the front and rear sides of the lower surface of the pressing plate (4), and a pressing rod (6) is movably installed in the middle of the pressing plate (4). The bottom end of the pressing rod (6) is fixed on the bottom plate (1), and the bottom end of the positioning sleeve (5) is pressed on the top of the wiring terminal (21).

2. A charge and discharge safety protection component for a sodium ion battery pack according to claim 1, characterized in that: The two cable connection terminals (8) on the mounting plate (3) are divided into a positive terminal and a negative terminal, and the positive terminal and the negative terminal are electrically connected to the test circuit via a connecting wire.

3. A charge and discharge safety protection component for a sodium ion battery pack according to claim 1, characterized in that: A protective ring (52) is integrally formed below the outer ring surface of the positioning sleeve (5); when the bottom end of the positioning sleeve (5) contacts the wiring terminal (21), the bottom end of the protective ring (52) contacts the upper surface of the mounting plate (3); and the inner diameter of the protective ring (52) is greater than the outer diameter of the cable wiring terminal (8).

4. A charge and discharge safety protection component for a sodium ion battery pack as claimed in claim 3, characterized in that: A notch is provided on the front side of the outer ring surface of the protective ring (52), and an extension cover (51) is formed by extending the front side of the notch.

5. A charge and discharge safety protection component for a sodium ion battery pack according to claim 1, characterized in that: A lifting spring (9) is sleeved on each guide column (7), and the lifting spring (9) is placed between the pressing plate (4) and the mounting plate (3), and the upper and lower ends of the lifting spring (9) are respectively in contact with the pressing plate (4) and the mounting plate (3).

6. A charge and discharge safety protection component for a sodium ion battery pack according to claim 1, characterized in that: The pressing rod (6) is rotatably mounted on the pressing plate (4) via a bearing, and the lower end of the pressing rod (6) passes through the pressing plate (4) and is placed below the pressing plate (4). A threaded locking portion (61) is provided below the outer ring surface of the pressing rod (6). A locking groove (31) is provided in the middle of the mounting plate (3), and the locking portion (61) is threadedly connected to the locking groove (31).

Images