A single-cell packaging structure

Abstract

This utility model discloses a single-cell packaging structure, including a rigid body and two reinforcing bodies. The two reinforcing bodies are fixed to the top of the rigid body in a mirror-symmetrical manner along its length. A frame is fixed to the bottom of the rigid body. A groove is formed on the top of each reinforcing body above the frame. A through hole is vertically formed in the frame and the groove. A sealing container is held in the groove. To address the shortcomings of existing technologies, this application first designs an electrode cap and a retaining plate. Adhesive can be injected into the electrode cap beforehand, and then the electrode is inserted into it until the adhesive completely covers the bottom surface of the electrode. This ensures that the adhesive completely fills the gap between the electrode and the electrode hole, avoiding the problem in existing technologies where the gap is small and the adhesive is difficult to inject and fill completely.

Description

Technical Field

[0001] This utility model relates to the field of battery cell packaging technology, specifically to a single-cell packaging structure. Background Technology

[0002] In the existing technology, a sealing ring is first placed on the reverse side of the electrode hole, and then the electrode post is inserted into the electrode hole from the reverse side. Glue is then injected into the gap between the electrode post and the motor hole from the front side to perform a sealing treatment. Because the electrode post is inserted into the electrode hole first and then the glue is injected, the glue is difficult to inject into the gap due to the limited operating space. Furthermore, epoxy glue has a high density and low fluidity, and the gap between the electrode post and the electrode hole is small, so the glue cannot completely fill all the gaps, resulting in poor sealing performance. Utility Model Content

[0003] The purpose of this invention is to solve the problem that the gap is too small, making it difficult to inject glue and resulting in poor sealing. Therefore, a single-cell packaging structure is proposed.

[0004] The objective of this utility model can be achieved through the following technical solutions:

[0005] A single-cell packaging structure includes a rigid body and two reinforcing bodies. The two reinforcing bodies are fixed to the top of the rigid body in a mirror-symmetrical manner along the length of the rigid body. A frame is fixed to the bottom of the rigid body. A groove is formed on the top of the reinforcing body above the frame. A through hole is formed vertically through the frame and the groove. A sealing container is held in the groove.

[0006] As a further embodiment of this utility model: the sealed container includes a clamping plate and an electrode cap, the electrode cap being fixed to the top of the clamping plate, and the clamping plate being able to engage with the groove.

[0007] As a further embodiment of this utility model: the connection between the pole cap and the card plate is recessed inward to form an annular groove.

[0008] As a further embodiment of this utility model: the rigid body and the two reinforcing bodies are sealed together by two-color injection molding or two-stage injection molding.

[0009] As a further embodiment of this utility model: the pole cap is coaxially arranged with the through hole.

[0010] As a further embodiment of this utility model: the outer surface of the pole cap is a prism-shaped structure.

[0011] As a further embodiment of this utility model, the cavity formed inside the pole cap is cylindrical in shape.

[0012] As a further embodiment of this utility model: a positioning rib is formed protruding from the inner wall of the frame.

[0013] As a further embodiment of this utility model: the encapsulation structure further includes a valve port disposed on the rigid body, and two mutually cooperating snap-fit ​​structures are respectively disposed at one end of each of the two reinforcing bodies near the valve port, and a cover plate is also snapped onto the two snap-fit ​​structures, the cover plate being used to control the opening and closing degree of the valve port.

[0014] As a further embodiment of this utility model: the snap-fit ​​structure includes a stand, the cover plate is supported on the stand, the top of the stand protrudes towards the cover plate to form a limiting rib, the limiting rib is used to block and limit the top of the cover plate.

[0015] The beneficial effects of this utility model are as follows: In view of the shortcomings of the prior art, this application first designs an electrode cap and a retaining plate, into which glue can be injected in advance, and then the electrode is inserted into it until the glue completely covers the bottom surface of the electrode. In this way, the glue can completely fill the gap between the electrode and the electrode hole, which can avoid the problem of glue being difficult to inject and fill when the gap is small in the prior art. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 yes Figure 1 The bottom is inverted in the diagram;

[0019] Figure 3 This is a schematic diagram of the present invention installed on the back of the packaging bag;

[0020] Figure 4 This is a schematic diagram showing the position of the cover plate of this utility model.

[0021] In the diagram: 1. Rigid main body; 101. Heat-sealing rib; 2. Reinforcing body; 201. Bayonet; 202. Buckle; 3. Frame; 301. Through hole; 302. Positioning rib; 401. Stand; 402. Limiting rib; 403. Groove; 5. Valve port; 601. Clamping plate; 602. Pole cap; 603. Annular groove; 7. Sealing bag; 8. Pole; 9. Cover plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1, please refer to Figure 1-3 As shown, this utility model is a single-cell packaging structure. The rigid body 1, the reinforcing body 2, the valve port 5, and the heat-sealing ribs 101 on both sides of the rigid body 1 are all existing technical features, so they will not be described in detail in this application.

[0024] In the later installation steps, the heat-sealing rib 101 structure is first aligned with the upper part of the single-cell packaging bag 7, and then sealed by heat sealing. This is also a current technical method.

[0025] The rigid main body 1 and the two reinforcing bodies 2 are sealed together by two-color injection molding or two-stage injection molding.

[0026] A frame 3 is fixed to the bottom of the rigid body 1. The frame 3 is actually welded to the rigid body 1. The tops of the two identical reinforcing bodies 2 on the rigid body 1 are also provided with two identical grooves. The card plate 601 can be glued into the grooves, thereby fixing and limiting the pole cap 602 on the card plate 601. The pole cap 602 is a sealing cap designed to seal the pole 8. A through hole 301 is formed between the bottom of the pole cap 602 and the frame 3. Later, the pole 8 can pass through the through hole 301 and enter the pole cap 602. However, it should be noted that when the pole 8 is inserted into the pole cap 602, a certain amount of sealing glue needs to be injected into the cavity formed in the pole cap 602 so that the pole 8 is inserted into the glue until the glue overflows and covers the bottom surface of the pole 8. Before later use, use a special screw-on tool to unscrew the pole cap 602 to expose the pole 8 so that the pole 8 can be welded to the connecting piece later.

[0027] In order to facilitate the operation of unscrewing the cap, an annular groove 603 is specially designed. The groove structure of the annular groove 603 is designed to reduce the thickness of the bottom of the terminal cap 602, so that the terminal cap 602 can be easily unscrewed, thus minimizing damage to the glue sealing layer.

[0028] In addition, to facilitate the use of the screw-on tooling and the screw-on operation, the external structure of the pole cap 602 is designed as a rhomboid structure, so that the screw-on tooling can be easily attached to the pole cap 602 and rotated to screw on.

[0029] It is also worth noting that:

[0030] The positioning rib 302 in the frame 3 is to facilitate the quick insertion of the pole post 8 into the pole post cap 602.

[0031] A single cell includes a terminal post 8, a packaging bag 7, and a group of electrodes. The electrode group is not related to this patent, and the packaging bag 7 and the terminal post 8 are existing mature technologies. The terminal post 8 is specifically a lead terminal post.

[0032] Example 2, see Figure 4 In addition to the technical solution of Embodiment 1, two interlocking structures and a cover plate 9 are added. The cover plate 9 is locked by the interlocking structures. By opening and closing or by moving, the cover plate 9 can leak a little bit of the valve port 5, which can limit the safety valve and regulate the valve pressure.

[0033] The stand 401 and the limiting rib 402 in its snap-fit ​​structure form a groove 403, so the cover plate 9 is inserted into the groove 403, and the size of the valve port 5 can be adjusted by sliding the cover plate 9 back and forth.

[0034] In Example 3, based on Example 1 or Example 2, a bayonet 201 and a buckle 202 are added.

[0035] The rigid body 1 has a slot 201 on one side and a buckle 202 that cooperates with the slot 201 on the other side. Both sides of the rigid body 1 are provided with slots 201 and buckles 202 in this way. Thus, when multiple identical packaging structures are used, each packaging component can be combined with the others.

[0036] The foregoing has provided a detailed description of one embodiment of the present invention, but the description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the scope of the claims of the present invention.

Claims

1. A single cell packaging structure comprising a rigid main body (1) and two reinforcing bodies (2) which are fixed on the top of the rigid main body (1) in mirror symmetry along the length direction of the rigid main body (1), characterized in that, The bottom of the rigid body (1) is fixed with a frame (3), and the top of the reinforcing body (2) is provided with a groove above the frame (3). A through hole (301) is provided vertically through the frame (3) and the groove. A sealing container is attached to the groove.

2. The single cell packaging structure of claim 1, wherein, The sealed container includes a retaining plate (601) and a pole cap (602), the pole cap (602) being fixed to the top of the retaining plate (601), and the retaining plate (601) being able to engage in the groove.

3. The single cell packaging structure of claim 2, wherein, The connection between the pole cap (602) and the card plate (601) is recessed inward to form an annular groove (603).

4. The single cell packaging structure of claim 1, wherein, The rigid body (1) and the two reinforcing bodies (2) are sealed together by two-color injection molding or secondary injection molding.

5. The single cell packaging structure of claim 2, wherein, The pole cap (602) is coaxially arranged with the through hole (301).

6. The single cell packaging structure of claim 2, wherein, The outer surface of the pole cap (602) is a prism-shaped structure.

7. The single cell packaging structure of claim 2, wherein, The cavity formed inside the pole cap (602) is cylindrical in shape.

8. The single cell packaging structure of claim 1, wherein, The inner wall of the frame (3) has a protruding positioning rib (302).

9. The single cell packaging structure of claim 1, wherein, The encapsulation structure also includes a valve port (5) disposed on the rigid body (1). Two mutually cooperating snap-fit ​​structures are respectively disposed at one end of the two reinforcing bodies (2) near the valve port (5). A cover plate (9) is also snapped onto the two snap-fit ​​structures. The cover plate (9) is used to control the opening and closing degree of the valve port (5).

10. The single cell packaging structure of claim 9, wherein, The snap-fit ​​structure includes a stand (401), the cover plate (9) is supported on the stand (401), and the top of the stand (401) protrudes towards the cover plate (9) to form a limiting rib (402), which is used to block and limit the top of the cover plate (9).

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