Compression-resistant lithium battery

Abstract

The utility model relates to the technical field of lithium batteries, and discloses a pressure-resistant lithium battery which is characterized in that the end part of a shell is connected with a sealing cover plate, positioning holes are formed in the surfaces of the shell and the sealing cover plate, positioning rods are inserted into inner cavities of the positioning holes, fixed clamping rings are mounted at the outer ends of the positioning rods, and protective pressure-bearing strips are mounted on the inner side surfaces of the fixed clamping rings. According to the pressure-resistant lithium battery, the shell and the sealing cover plate are connected through the fixing clamping ring, the additionally-arranged positioning rods are inserted into the positioning holes for auxiliary connection, so that the connection strength and stability between the assemblies are improved, the additionally-arranged protection pressure-bearing strips are annularly arranged on the periphery of the shell in a protruding mode, and when the columnar battery body is pressed, the protection pressure-bearing strips can be prevented from falling off when the columnar battery body is pressed. The pressure-bearing strips are firstly impacted, the problems of damage, deformation and the like caused by the fact that the lithium battery shell is directly pressed are avoided, and the space is reserved between the adjacent pressure-bearing strips, so that the heat dissipation effect of the lithium battery is ensured on the premise of keeping the pressure-resistant effect.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery technology, specifically to a pressure-resistant lithium battery. Background Technology

[0002] A lithium-ion battery is a type of battery that uses lithium metal or lithium alloy as the negative electrode material and a non-aqueous electrolyte solution. The working principle of a lithium-ion battery involves the insertion and extraction of lithium ions. During charging, lithium ions are extracted from the positive electrode material, migrate through the electrolyte to the negative electrode, and are inserted into the carbon layer structure there. During discharging, lithium ions are extracted from the negative electrode and return to the positive electrode through the electrolyte. Throughout this process, lithium always exists in the form of lithium ions, never in the form of metallic lithium. It is mainly used in medical electronics, power tools, drones, commercial robots, electric vehicles, security communications, and surveying and mapping.

[0003] Common lithium batteries typically consist of a cell composed of a positive electrode, a negative electrode, a separator, an electrolyte, and a battery casing. Traditional lithium batteries only protect the cell through the casing. When the casing is subjected to external pressure, it can not only break but also cause the battery to deform and malfunction. Therefore, a pressure-resistant lithium battery is proposed. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the shortcomings of the existing technology, this utility model provides a pressure-resistant lithium battery to solve the problem that the traditional lithium battery only protects the lithium battery cell through the outer shell. When the outer shell is subjected to external pressure impact to a certain extent, it will not only cause the outer shell to break, but also easily cause the battery to deform and cause technical problems.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a pressure-resistant lithium battery, comprising a casing, an inner cavity of which a battery cell is installed, and both ends of the casing are connected to a cover plate. A plug-in port is also provided on the inner side of the end of the casing. Positioning holes are uniformly provided on the surfaces of the casing and the cover plate. Positioning rods are inserted into the inner cavities of each positioning hole, and fixing rings are installed on the outer ends of the positioning rods. A protective pressure-bearing strip is installed on the inner side of the fixing rings. By first placing the battery cell inside the casing, then connecting the cover plate to the casing, and inserting a wire at the plug-in port, the positioning rod is first inserted into the positioning hole when connecting the fixing ring to the casing and the cover plate. The protective pressure-bearing strip is arranged in a ring around the perimeter of the casing, facilitating installation and improving pressure resistance.

[0008] Preferably, the outer casing has external threads on its surface, and the inner wall of the cover plate has internal threads. The outer casing and the cover plate are connected by the external and internal threads. This facilitates the disassembly and assembly of the outer casing and the cover plate, and makes it convenient for the inspection and replacement of the battery cells.

[0009] Preferably, the protective pressure-bearing strip is square in shape and surrounds the outer surface of the outer shell. Both the protective pressure-bearing strip and the outer shell can be made of composite materials, thus providing pressure resistance.

[0010] Preferably, the protective pressure-bearing strip includes a main pressure-bearing strip and a secondary pressure-bearing strip, with the secondary pressure-bearing strip disposed on both sides of the main pressure-bearing strip. The protective pressure-bearing strip provides buffering and pressure resistance through the main and secondary pressure-bearing strips.

[0011] Preferably, each of the secondary pressure-bearing strips is equipped with a side connecting rod, which is inserted into the corresponding side of the main pressure-bearing strip and slidably connected. The secondary pressure-bearing strip can be moved outward, causing the corresponding side connecting rod to move outward along the main pressure-bearing strip, thus adjusting the overall length of the protective pressure-bearing strip. This allows it to be used for pressure-resistant operations on lithium batteries of different lengths within a certain range.

[0012] (III) Beneficial Effects

[0013] Compared with the prior art, this utility model provides a pressure-resistant lithium battery, which has the following beneficial effects:

[0014] This pressure-resistant lithium battery connects the outer casing to the cover plate via a fixing ring, and uses an additional positioning rod inserted into the positioning hole for auxiliary connection, thereby improving the connection strength and stability between components. The added protective pressure-bearing strip is arranged in a ring protrusion around the outer casing. When the columnar battery body is compressed, the pressure-bearing strip will be impacted first, avoiding damage and deformation caused by direct pressure on the lithium battery casing. Furthermore, since there is space between adjacent protective pressure-bearing strips, the heat dissipation effect of the lithium battery is guaranteed while maintaining the pressure resistance effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the separation structure of the outer shell and the cover plate of this utility model;

[0017] Figure 3 This is a schematic diagram of the connection between the protective pressure strip and the fixing ring of this utility model;

[0018] Figure 4 This is a schematic diagram showing the main pressure-bearing strip and the secondary pressure-bearing strip of this utility model in a separated state.

[0019] In the diagram: 1. Outer shell; 2. Battery cell; 3. Cover plate; 4. Plug-in port; 5. Side connecting rod; 6. Protective pressure-bearing strip; 7. Positioning hole; 8. Fixing ring; 9. Positioning rod; 10. Main pressure-bearing strip; 11. Secondary pressure-bearing strip. Detailed Implementation

[0020] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] This utility model provides a technical solution: a pressure-resistant lithium battery, comprising a casing 1, a battery cell 2, a cover plate 3, a connector port 4, a side connecting rod 5, a protective pressure-bearing strip 6, a positioning hole 7, a fixing ring 8, a positioning rod 9, a main pressure-bearing strip 10, and a secondary pressure-bearing strip 11. Please refer to [link / reference]. Figure 1 , Figure 2 , Figure 3 and Figure 4 The inner cavity of the outer casing 1 is equipped with a battery cell 2, and both ends of the outer casing 1 are connected to a cover plate 3. A plug-in port 4 is also provided on the inner side of the end of the outer casing 1. Positioning holes 7 are evenly distributed on the surfaces of the outer casing 1 and the cover plate 3. Positioning rods 9 are inserted into the inner cavities of the positioning holes 7, and fixing rings 8 are installed on the outer ends of the positioning rods 9. A protective pressure-bearing strip 6 is installed on the inner side of the fixing rings 8. The battery cell 2 is first placed inside the outer casing 1, then the cover plate 3 is connected to the outer casing 1, and a wire is inserted into the plug-in port 4. When connecting the fixing rings 8 to the outer casing 1 and the cover plate 3, the positioning rods 9 are first inserted into the positioning holes 7. The protective pressure-bearing strip 6 is arranged in a ring around the outer casing 1, facilitating installation and improving compressive strength.

[0022] Please see Figure 2 The outer casing 1 has external threads on its surface, and the inner wall of the cover plate 3 has internal threads. The outer casing 1 and the cover plate 3 are connected by external and internal threads. This facilitates the disassembly and assembly of the outer casing 1 and the cover plate 3, and makes it convenient to inspect and replace the battery cell 2.

[0023] Please see Figure 3 The protective pressure-bearing strip 6 has a square design and surrounds the outer surface of the outer shell 1. Both the protective pressure-bearing strip 6 and the outer shell 1 can be made of composite materials to provide pressure resistance. The protective pressure-bearing strip 6 includes a main pressure-bearing strip 10 and a secondary pressure-bearing strip 11, with the secondary pressure-bearing strip 11 positioned on both sides of the main pressure-bearing strip 10. The protective pressure-bearing strip 6 provides cushioning and pressure resistance through the main pressure-bearing strip 10 and the secondary pressure-bearing strip 11.

[0024] Please see Figure 4 Each secondary pressure-bearing strip 11 has a side connecting rod 5 installed on its outer side, and the side connecting rod 5 is inserted into the corresponding side of the main pressure-bearing strip 10 and slidably connected. The secondary pressure-bearing strip 11 can be moved outward, and the corresponding side connecting rod 5 can be moved outward along the main pressure-bearing strip 10 to adjust the overall length of the protective pressure-bearing strip 6. It can be used for pressure resistance operation of lithium batteries of different lengths within a certain range.

[0025] This solution involves first placing the battery cell 2 inside the outer casing 1, then connecting the cover plate 3 to the outer casing 1, and inserting a wiring wire at the insertion port 4. When connecting the fixing ring 8 to the outer casing 1 and the cover plate 3, the positioning rod 9 is first inserted into the positioning hole 7, so that the protective pressure-bearing strip 6 surrounds the outer casing 1, thereby achieving a buffering and pressure-resistant effect. The auxiliary pressure-bearing strip 11 can be moved outward, driving the corresponding side connecting rod 5 to move outward along the main pressure-bearing strip 10, adjusting the overall length of the protective pressure-bearing strip 6.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pressure-resistant lithium battery, comprising a casing, wherein a battery cell is disposed within the inner cavity of the casing, characterized in that: Both ends of the outer shell are connected to a cover plate, and the inner side of the end of the outer shell is also provided with a plug-in port. The outer shell and the cover plate are evenly provided with positioning holes. Positioning rods are inserted into the inner cavities of the positioning holes, and fixing rings are installed on the outer ends of the positioning rods. Protective pressure-bearing strips are installed on the inner side of the fixing rings.

2. The pressure-resistant lithium battery according to claim 1, characterized in that: The outer shell has external threads on its surface, and the inner wall of the cover plate has internal threads. The outer shell and the cover plate are connected by external and internal threads.

3. The pressure-resistant lithium battery according to claim 1, characterized in that: The protective pressure strip is square in shape and surrounds the outer surface of the shell.

4. A pressure-resistant lithium battery according to claim 1, characterized in that: The protective pressure-bearing strip includes a main pressure-bearing strip and a secondary pressure-bearing strip, with the secondary pressure-bearing strip located on both sides of the main pressure-bearing strip.

5. A pressure-resistant lithium battery according to claim 4, characterized in that: Each of the secondary bearing strips is equipped with a side connecting rod on its outer side, and the side connecting rod is inserted into the corresponding side of the main bearing strip.

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