Corrosion-resistant lithium battery sealing cover group

Abstract

The utility model discloses a corrosion-resistant lithium battery sealing cover group which comprises a bottom plate and a sealing structure, a lead hole matched with the sealing structure is formed in the center of the bottom plate, and the bottom plate, the sealing structure and a lead are sintered to form an integrated structure; the sealing structure is made of a corrosion-resistant material; according to the utility model, the corrosion-resistant glass is adopted as a sealing structure, so that the corrosion and adhesive force of electrolyte can be resisted, and the service life of the disposable lithium battery is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of glass sealing structures, in particular to a corrosion-resistant lithium battery sealing cover assembly. Background Art

[0002] Disposable lithium batteries are widely used in smart card meters (water, electricity, gas meters), ETC, computer support power supplies, medical devices, wireless communications, scientific research instruments and other fields due to their high specific energy, high open circuit voltage, wide operating temperature range and stable working voltage. Disposable lithium batteries are generally used for a long time and are inconvenient to replace frequently according to the equipment used. Therefore, they are required to be effective for a long time in some low-power consumption equipment such as smart water meters. The current service life is about 8 years. The reason for failure is not the exhaustion of power but the long-term corrosion of the sealing glass of the cover group by the electrolyte in the lithium battery, causing leakage and failure. Utility Model Content

[0003] The utility model provides a corrosion-resistant lithium battery sealing cover assembly, which can solve the problems pointed out in the background technology.

[0004] A corrosion-resistant lithium battery sealing cover assembly, comprising a bottom plate and a sealing structure, wherein a lead hole cooperating with the sealing structure is opened at the center of the bottom plate, and the bottom plate, the sealing structure and the lead are sintered to form an integrated structure;

[0005] Preferably, the sealing structure is made of corrosion-resistant material.

[0006] Preferably, the sealing structure is made of corrosion-resistant glass.

[0007] Preferably, the content of ZrO2 in the main components of the corrosion-resistant glass is 2-4%, and the content of F is 2-5%.

[0008] It also includes an umbrella-shaped sealing cover which is sleeved on the lead wire, and the opening of the umbrella-shaped sealing cover faces the sealing structure.

[0009] Preferably, the umbrella-shaped sealing cover is a silicone rubber structural member.

[0010] Compared with the prior art, the utility model has the beneficial effect that: the utility model adopts corrosion-resistant glass as a sealing structure, which can resist the corrosion and adhesion of the electrolyte, thereby extending the service life of the disposable lithium battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic structural diagram of a sealing cover assembly according to Embodiment 1 of the present utility model;

[0012] Figure 2 It is a structural schematic diagram of the sealing cover assembly of the second embodiment of the utility model.

[0013] Description of reference numerals:

[0014] 1-base plate, 2-sealing structure, 3-lead hole, 4-lead, 5-umbrella-shaped sealing cover. DETAILED DESCRIPTION

[0015] A specific implementation of the present utility model is described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present utility model is not limited by the specific implementation mode.

[0016] Embodiment 1

[0017] like Figure 1 As shown, a corrosion-resistant lithium battery sealing cover assembly provided by an embodiment of the utility model includes a bottom plate 1 and a sealing structure 2. Specifically, a lead hole 3 cooperating with the sealing structure 2 is opened at the center of the bottom plate 1, and the bottom plate 1, the sealing structure 2 and the lead 4 are sintered to form an integrated structure;

[0018] In order to resist the corrosion and adhesion of the electrolyte, the sealing structure 2 is made of corrosion-resistant material, and in this embodiment, corrosion-resistant glass is preferably used;

[0019] The main components of corrosion-resistant glass are: 60-75% SiO2, 6-10% Na2O, 2-5% B2O3, 5-10% K2O, 10-15% BaO, 3-5% Al2O3, 0.5-1% Li2O, 2-4% ZrO2, 2-5% F;

[0020] By adding ZrO2 and F, the weather resistance of the glass can be effectively increased, and the corrosion and adhesion of the electrolyte can be resisted, so that the disposable lithium battery cover group can be used. Through the analysis of the aging test structure, the service life is expected to reach more than 15 years.

[0021] Embodiment 2

[0022] like Figure 2 As shown, on the basis of the first embodiment, it further includes an umbrella-shaped sealing cover 5, which is sleeved on the lead 4, and the opening of the umbrella-shaped sealing cover 5 faces the sealing structure 2; in addition, the umbrella-shaped sealing cover 5 is a silicone rubber structural member, that is, a silicone rubber material, which is heat-resistant and prevents damage to the umbrella-shaped structure during glass sealing and sintering;

[0023] The umbrella-shaped sealing cover 5 can reduce the amount of electrolyte in contact with the sealing structure 2, thereby further extending the service life of the cover assembly in the first embodiment.

[0024] It is obvious 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 and basic features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim involved.

[0025] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A corrosion-resistant lithium battery sealing cover assembly, characterized in that: It comprises a base plate and a sealing structure, wherein a lead hole (3) cooperating with the sealing structure (2) is provided at the center of the base plate (1), and the base plate (1), the sealing structure (2) and the lead wire (4) are sintered to form an integrated structure; The sealing structure (2) is made of corrosion-resistant material; The sealing structure (2) is corrosion-resistant glass; It also comprises an umbrella-shaped sealing cover (5) which is sleeved on the lead wire (4), and the opening of the umbrella-shaped sealing cover (5) faces the sealing structure.

2. The corrosion-resistant lithium battery sealing cover assembly according to claim 1, characterized in that: The umbrella-shaped sealing cover (5) is a silicone rubber structural component.

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