Energy storage anode and cathode sealing terminal

Abstract

The utility model discloses an energy storage anode and cathode sealing terminal in the field of sealing terminals, which comprises an insulating inner shell, a locking nut, a pole core body and an insulating outer shell, one end of the pole core body is provided with a thread part, the thread part is in threaded connection with the locking nut, one end of the pole core body extends to form a sealing part, and the other end of the pole core body is connected with the insulating outer shell. A sealing part is arranged in the insulating inner shell, a first sealing ring is arranged between the sealing part and the insulating inner shell, the pole core body and the insulating inner shell are sealed through the first sealing ring, one end of the insulating inner shell extends outwards to form a fixing part, and the fixing part is provided with a second sealing ring; according to the energy storage positive and negative electrode sealing terminal, the threaded part at one end of the pole column core body is in threaded connection with the locking nut, the pole column core body is convenient to disassemble, the sealing rings are convenient to directly and simply replace, and the sealing effect is further enhanced by arranging a plurality of sealing rings at different parts of the terminal; and the sealing performance of the energy storage positive and negative electrode sealing terminal is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of sealed terminals, in particular to a sealed terminal for energy storage positive and negative electrodes. Background Art

[0002] Energy storage positive and negative sealed terminals, as key components in battery systems (such as lithium-ion battery packs, supercapacitor packs, etc.), are mainly used to connect battery cells or modules with external circuits to achieve the storage and release of electrical energy. They not only bear the heavy responsibility of current transmission, but also bear the important responsibility of protecting the battery system from external environmental influences (such as moisture, dust and other pollutants). Energy storage positive and negative sealed terminals are usually designed to have high conductivity, corrosion resistance and sealing properties to ensure the safe and reliable operation of the battery system. In application fields such as electric vehicles, energy storage power stations, and portable power supplies, the energy storage positive and negative sealed terminals are connected to the battery pack box (PACK) to transmit the electrical energy in the battery system to the motor, controller or other electrical equipment. This connection usually requires the energy storage positive and negative sealed terminals to have reliable sealing performance.

[0003] However, in the prior art, the design of the positive and negative sealed terminals for energy storage often has some problems. First, in order to achieve a stable connection with the battery pack, the positive and negative sealed terminals for energy storage are usually independent entities, and are basically sealed to the battery pack box (PACK) by rubber pads or O-rings. Therefore, they do not have multiple sealing functions and the sealing performance is poor. In addition, once there is a leak, because the positive and negative terminals are connected to the battery cell poles inside the battery pack box (PACK), it is impossible to simply replace the sealing ring directly. It is often necessary to disassemble the battery pack, remove the terminals, replace the sealing ring, and then install it again, which makes on-site maintenance difficult. Although this fixing method can provide sufficient mechanical strength, when the positive and negative sealed terminals for energy storage need to be maintained or replaced, the disassembly process is often complicated, time-consuming and labor-intensive, and it is inconvenient to disassemble and replace the sealing ring. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technical solutions, the utility model provides an energy storage positive and negative electrode sealed terminal, which can effectively solve the technical problems of poor sealing performance of the existing energy storage positive and negative electrode sealed terminals and inconvenient disassembly and replacement of sealing rings.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a positive and negative sealed terminal for energy storage, including an insulating inner shell, a locking nut, a pole core and an insulating outer shell, one end of the pole core is provided with a threaded portion, the threaded portion is threadedly connected to the locking nut, one end of the pole core extends to form a sealing portion, a first sealing ring is provided between the sealing portion and the insulating inner shell, the pole core is sealed with the insulating inner shell through the first sealing ring, one end of the insulating inner shell extends outward to form a fixing portion, the fixing portion is provided with a second sealing ring, the insulating outer shell is recessed inwardly to form an annular groove, a third sealing ring is provided inside the annular groove, the insulating inner shell is recessed inwardly to form an installation groove, a fourth sealing ring is provided inside the installation groove.

[0006] Furthermore, a circular hole is provided on the surface of the pole core.

[0007] Furthermore, mounting holes are provided on four edges of the insulating shell, and locking bolts are connected to the inner threads of the mounting holes.

[0008] Furthermore, one end of the insulating inner shell extends outward to form a protrusion, and the side surface of the protrusion is recessed inward to form a snap-fit ​​groove, and a fifth sealing ring is provided inside the snap-fit ​​groove.

[0009] Furthermore, the first sealing ring, the second sealing ring, the third sealing ring, the fourth sealing ring and the fifth sealing ring are all O-rings.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention provides a positive and negative sealed terminal for energy storage, wherein the threaded portion at one end of the pole core body is threadedly connected to the locking nut, which facilitates the disassembly of the pole core body and facilitates the direct and simple replacement of the sealing ring. By arranging a number of sealing rings at different parts of the terminal, the sealing effect is further enhanced, thereby greatly improving the sealing performance of the positive and negative sealed terminals for energy storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a three-dimensional diagram of the upper end of the positive and negative sealed terminals of an energy storage device according to the present invention;

[0012] Figure 2 This is a three-dimensional diagram of the lower end of the positive and negative sealed terminals of an energy storage device according to the present invention;

[0013] Figure 3 This is a three-dimensional diagram of the pole core of the positive and negative sealed terminals for energy storage according to the present invention;

[0014] Figure 4 This is a three-dimensional diagram of an insulating shell of an energy storage positive and negative sealed terminal of the utility model;

[0015] Figure 5This is a three-dimensional diagram of an insulating inner shell of an energy storage positive and negative sealed terminal of the utility model;

[0016] Figure 6 This is a front view of a sealed positive and negative energy storage terminal of the utility model;

[0017] Figure 7 This is a cross-sectional view of a positive and negative sealed terminal for energy storage according to the present invention.

[0018] Numbers in the figure:

[0019] 1-insulating outer shell; 2-insulating inner shell; 3-pole core; 4-locking nut; 5-locking bolt; 6-circular hole; 7-sealing part; 8-first sealing ring; 9-threaded part; 10-second sealing ring; 11-third sealing ring; 12-fourth sealing ring; 13-fifth sealing ring; 14-raised part; 15-engaging groove; 16-mounting groove; 17-annular groove; 18-fixing part. DETAILED DESCRIPTION

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

[0021] like Figure 1 - Figure 7As shown, the utility model provides an energy storage positive and negative sealed terminal, including an insulating inner shell 2, a locking nut 4, a pole core 3 and an insulating outer shell 1, one end of the pole core 3 is provided with a threaded portion 9, the threaded portion 9 is threadedly connected to the locking nut 4, achieving efficient and reliable sealing performance, the threaded portion 9 is threadedly connected to the locking nut 4, ensuring that the pole core 3 can be disassembled, one end of the pole core 3 extends to form a sealing portion 7, a first sealing ring 8 is provided between the sealing portion 7 and the insulating inner shell 2, the pole core 3 is sealed with the insulating inner shell 2 by the first sealing ring 8, effectively preventing internal medium leakage, and improving the overall sealing performance of the terminal. One end of the insulating inner shell 2 extends outward to form a fixing portion 18, and the fixing portion 18 is provided with a second sealing ring 10. The insulating outer shell 1 is recessed inward to form an annular groove 17, and a third sealing ring 11 is provided inside the annular groove 17, which further enhances the sealing effect with the external structure. At the same time, a third sealing ring 11 is provided in the annular groove 17 of the insulating shell 1, which provides additional protection for the external sealing of the terminal. The insulating inner shell 2 is recessed in the box to form a mounting groove 16, and a fourth sealing ring 12 is provided inside the mounting groove 16, which provides additional sealing and stability for the terminal, enhances the reliability of the overall structure, and makes the sealing between the insulating inner shell 2 and the insulating shell 1 stronger.

[0022] A circular hole 6 is provided on the surface of the pole core 3, and mounting holes are provided on the four edges of the insulating shell 1. The internal threads of the mounting holes are connected to locking bolts 5. One end of the insulating inner shell 2 extends outward to form a protrusion 14, and the side of the protrusion 14 is recessed inward to form a snap-fit ​​groove 15. A fifth sealing ring 13 is provided inside the snap-fit ​​groove 15. The first sealing ring 8, the second sealing ring 10, the third sealing ring 11, the fourth sealing ring 12 and the fifth sealing ring 13 are all O-rings.

[0023] In this embodiment, a positive and negative sealed terminal for energy storage is provided, in which a threaded portion 9 at one end of the pole core 3 is threadedly connected to a locking nut 4, making it convenient for the pole core 3 to be disassembled and for the sealing ring to be replaced directly and simply. By arranging a plurality of sealing rings at different parts of the terminal, the sealing effect is further enhanced, thereby greatly improving the sealing performance of the positive and negative sealed terminals for energy storage.

[0024] During installation, the insulating inner shell 2 is connected and positioned with the pole core 3 and locked with an insulating nut, wherein the insulating inner shell 2 and the inside of the pole core 3 are sealed by a first sealing ring 8, and the insulating inner shell 2 is provided with a second sealing ring 10 and a third sealing ring 11 to seal with the battery pack case (PACK), and the insulating outer shell 1 is installed on the outside of the insulating inner shell 2 by the locking bolt 5, and is installed with the battery pack case (PACK) through the insulating outer shell 1, wherein the insulating outer shell 1 and the insulating inner shell 2 are sealed by a fourth sealing ring 12, which plays a double protection role. During disassembly, the insulating inner shell 2 and the insulating outer shell 1 can be separated by removing the locking bolt 5, which is convenient for replacing the sealing ring.

[0025] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description. It is intended that all variations within the meaning and range of equivalents of the claims be encompassed within the present invention, and any reference numerals in the claims should not be construed as limiting the claims to which they relate.

Claims

1. A sealed positive and negative energy storage terminal, comprising an insulating inner shell, a locking nut, a pole core, and an insulating outer shell, characterized in that: One end of the pole core is provided with a threaded portion, which is threadedly connected to a locking nut. One end of the pole core extends to form a sealing portion. A first sealing ring is provided between the sealing portion and the insulating inner shell. The pole core is sealed with the insulating inner shell through the first sealing ring. One end of the insulating inner shell extends outward to form a fixing portion. The fixing portion is provided with a second sealing ring. The insulating outer shell is recessed inward to form an annular groove. A third sealing ring is provided inside the annular groove. The insulating inner shell is recessed inward to form a mounting groove. A fourth sealing ring is provided inside the mounting groove.

2. The energy storage positive and negative sealed terminals according to claim 1, characterized in that: A circular hole is provided on the surface of the pole core.

3. The energy storage positive and negative sealed terminals according to claim 1, characterized in that: The insulating shell is provided with mounting holes on four edges thereof, and the inner threads of the mounting holes are connected with locking bolts.

4. The energy storage positive and negative electrode sealed terminal according to any one of claims 1 to 3, characterized in that: One end of the insulating inner shell extends outward to form a protrusion, and the side surface of the protrusion is recessed inward to form a clamping groove. A fifth sealing ring is provided inside the clamping groove.

5. The energy storage positive and negative sealed terminals according to claim 4, characterized in that: The first sealing ring, the second sealing ring, the third sealing ring, the fourth sealing ring and the fifth sealing ring are all O-type sealing rings.

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