Shell structure of lithium polymer battery

Abstract

The utility model provides a shell structure of a lithium polymer battery, and relates to the technical field of lithium polymer batteries, the shell structure comprises a shell and a protection mechanism, the protection mechanism is arranged in the shell, through the arrangement of the protection mechanism, when the shell structure is used, a positive electrode tank body and a negative electrode tank body are used for storing positive and negative electrode materials of the battery; energy is released and stored through a chemical reaction, the supporting diaphragm is made of a polyolefin material and can effectively prevent the electricity storage assembly from deforming, the supporting frame is used for providing structural support and ensuring the stability of internal assemblies of the battery, and the packaging body and the battery cover can prevent electrolyte leakage and ensure the sealing performance of the battery. The safety valve button and the pressure relief opening can relieve pressure and prevent explosion when abnormal pressure or temperature occurs in the battery, the shell structure of the lithium polymer battery with safety, stability, heat dissipation performance and economical efficiency is provided by the design, and safe and efficient operation can be ensured during use.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium polymer batteries, in particular to a shell structure of a lithium polymer battery. Background Art

[0002] The shell structure of lithium polymer batteries is a design specially used for shell protection of lithium polymer batteries. The main function of the shell structure of lithium polymer batteries is to physically protect the internal components of the battery, prevent damage from mechanical vibration, impact and external environment, extend battery life, maintain a stable internal environment, prevent moisture and dust from entering, and ensure the stability of the battery working environment.

[0003] After searching, the patent number "CN206259393U" mentioned in the text that "the utility model discloses a shell structure of a lithium polymer battery, including a battery shell and end sealing plates installed at both ends of the battery shell, the battery shell is an aluminum foil plate with a wavy structure, the battery shell surrounds the circumference of the battery substrate, and the end sealing plates are made of plastic material. The utility model has good heat dissipation effect; the shell with a wavy structure can prevent slipping, and when the battery swells, the wavy structure can stretch and relieve deformation through the wavy structure." When in use, the shell with a wavy structure can prevent slipping, and when the battery swells, the wavy structure can stretch and relieve deformation through the wavy structure, but the wavy structure aluminum foil plate requires higher processing precision and technology during processing, which increases the manufacturing difficulty and manufacturing cost, and the battery cannot discharge abnormal pressure and will explode, causing economic property losses and even personal injury.

[0004] Therefore, we provide a shell structure of a lithium polymer battery to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a shell structure of a lithium polymer battery to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a housing structure of a lithium polymer battery, comprising a housing and a protection mechanism, wherein the protection mechanism is arranged inside the housing;

[0007] The protection mechanism includes a power storage component, a support component, a sealing component and a safety component. The power storage component is arranged inside the shell, the support component is arranged outside the power storage component, the sealing component is arranged outside the support component, and the safety component is arranged outside the shell.

[0008] Preferably, the electricity storage assembly comprises a positive electrode tank and a negative electrode tank, the positive electrode tank is arranged inside the shell, and the negative electrode tank is arranged inside the shell.

[0009] Preferably, the support assembly comprises a support diaphragm and a support frame, the support diaphragm is arranged on the outer side of the positive electrode can, and the support frame is arranged on the outer wall of the support diaphragm.

[0010] Preferably, the sealing assembly comprises a packaging body and a battery cover, the packaging body is arranged on the inner wall of the shell, and the battery cover is arranged on the inner side of the packaging body.

[0011] Preferably, the safety component comprises a safety valve button and a pressure relief port, the safety valve button is arranged on the outer side of the shell, and the pressure relief port is arranged on one side of the safety valve button.

[0012] Preferably, a heat dissipation component is provided on the other side of the shell, and the heat dissipation component includes a heat dissipation plate and a heat dissipation port. A heat dissipation plate is provided on the other side of the shell, and a heat dissipation port is opened on the outer wall of the heat dissipation plate.

[0013] Preferably, a discharge assembly is arranged above the shell, the discharge assembly comprises a connecting piece and a discharge terminal, a connecting piece is arranged above the shell, and a discharge terminal is arranged at one end of the connecting piece.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. Through the setting of the heat dissipation component, when in use, the heat dissipation plate and the heat dissipation port transfer the heat inside the battery to the external environment to maintain the normal operating temperature of the battery. At the same time, the setting of the discharge component provides the connection between the battery and the external circuit, increasing the flexibility of the equipment.

[0016] 2. Through the setting of the protection mechanism, when in use, the positive electrode tank and the negative electrode tank are used to store the positive and negative electrode materials of the battery, release and store energy through chemical reactions, the supporting diaphragm is made of polyolefin material, which can effectively prevent the deformation of the storage component, and the supporting frame is used to provide structural support to ensure the stability of the internal components of the battery. The packaging body and the battery cover can prevent the leakage of the electrolyte and ensure the sealing of the battery. The safety valve button and the pressure relief port can release the pressure when abnormal pressure or temperature occurs inside the battery to prevent explosion. This design provides a safe, stable, heat-dissipating and economical lithium polymer battery shell structure to ensure safe and efficient operation when in use. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 This is a schematic diagram of the heat dissipation component structure of the utility model;

[0019] Figure 3 It is a schematic diagram of the overall side view structure of the utility model;

[0020] Figure 4 It is a schematic diagram of the overall cross-sectional structure of the utility model.

[0021] Numbers in the figure: 1. Shell; 2. Protection mechanism; 21. Power storage assembly; 211. Positive electrode tank; 212. Negative electrode tank; 22. Support assembly; 221. Support diaphragm; 222. Support frame; 23. Sealing assembly; 231. Packaging body; 232. Battery cover; 24. Safety assembly; 241. Safety valve button; 242. Pressure relief port; 3. Heat dissipation assembly; 31. Heat dissipation plate; 32. Heat dissipation port; 4. Discharge assembly; 41. Connecting piece; 42. Discharge terminal. DETAILED DESCRIPTION

[0022] 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 in 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.

[0023] Embodiment 1

[0024] See also Figure 1 , Figure 3 and Figure 4 As shown, the utility model provides a technical solution: a shell structure of a lithium polymer battery, comprising a shell 1 and a protection mechanism 2, wherein the protection mechanism 2 is arranged inside the shell 1;

[0025] The protection mechanism 2 includes a power storage component 21, a support component 22, a sealing component 23 and a safety component 24. The power storage component 21 is arranged inside the shell 1, the support component 22 is arranged outside the power storage component 21, the sealing component 23 is arranged outside the support component 22, and the safety component 24 is arranged outside the shell 1.

[0026] Furthermore, the power storage component 21 includes a positive electrode tank 211 and a negative electrode tank 212. The positive electrode tank 211 is arranged inside the shell 1, and the negative electrode tank 212 is arranged on the inner side of the shell 1. The positive electrode tank 211 and the negative electrode tank 212 are used to store the positive and negative electrode materials of the battery and release and store energy through chemical reactions.

[0027] Furthermore, the support assembly 22 includes a support diaphragm 221 and a support frame 222. The support diaphragm 221 is arranged on the outer side of the positive electrode can 211, and the support frame 222 is arranged on the outer wall of the support diaphragm 221. The support diaphragm 221 is made of polyolefin material, which can effectively prevent the power storage assembly 21 from deformation. The support frame 222 provides structural support to ensure the stability of the internal components of the battery.

[0028] Furthermore, the sealing assembly 23 includes a packaging body 231 and a battery cover 232. The packaging body 231 is provided on the inner wall of the shell 1, and the battery cover 232 is provided on the inner side of the packaging body 231. The packaging body 231 and the battery cover 232 prevent electrolyte leakage and ensure the sealing of the battery.

[0029] Furthermore, the safety component 24 includes a safety valve button 241 and a pressure relief port 242. The safety valve button 241 is arranged on the outside of the shell 1, and the pressure relief port 242 is arranged on one side of the safety valve button 241. The safety valve button 241 and the pressure relief port 242 can relieve pressure when abnormal pressure or temperature occurs inside the battery to prevent explosion.

[0030] Embodiment 2

[0031] See also Figure 1 and Figure 2 As shown, in comparison with Example 1, as another implementation of the utility model, a heat dissipation component 3 is provided on the other side of the shell 1, and the heat dissipation component 3 includes a heat dissipation plate 31 and a heat dissipation port 32. A heat dissipation plate 31 is provided on the other side of the shell 1, and a heat dissipation port 32 is opened on the outer wall of the heat dissipation plate 31. The heat dissipation plate 31 and the heat dissipation port 32 transfer the heat inside the battery to the external environment to maintain the normal operating temperature of the battery.

[0032] Furthermore, a discharge assembly 4 is arranged above the shell 1, and the discharge assembly 4 includes a connecting piece 41 and a discharge terminal 42. A connecting piece 41 is arranged above the shell 1, and a discharge terminal 42 is arranged at one end of the connecting piece 41. The connecting piece 41 and the discharge terminal 42 provide connection between the battery and the external circuit.

[0033] Working principle: First, a shell structure of a lithium polymer battery is moved to a working position. When in use, the first step is to charge the power storage component 21 through the discharge terminal 42. The second step is to support the diaphragm 221 during charging to protect the positive electrode tank 211 and the negative electrode tank 212 to ensure that no deformation is found. The third step is that the encapsulation body 231 seals the electrolyte inside the positive electrode tank 211 and the negative electrode tank 212. The fourth step is that when abnormal pressure or temperature occurs inside the battery, the pressure relief port 242 is controlled to open and release pressure by pressing the safety valve button 241. The fifth step is that after charging is completed, the discharge terminal 42 is connected to the electrical equipment using an electric wire for discharge. This completes the use process of the shell structure of a lithium polymer battery.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A housing structure of a lithium polymer battery, comprising a housing (1) and a protection mechanism (2), characterized in that: A protection mechanism (2) is provided inside the housing (1); The protection mechanism (2) comprises an electricity storage component (21), a support component (22), a sealing component (23) and a safety component (24); the housing (1) is provided with the electricity storage component (21) inside, the housing (1) is provided with the support component (22) outside, the housing (22) is provided with the sealing component (23) outside, and the housing (1) is provided with the safety component (24) outside.

2. The outer shell structure of a lithium polymer battery according to claim 1, characterized in that: The electricity storage assembly (21) comprises a positive electrode tank (211) and a negative electrode tank (212); the positive electrode tank (211) is arranged inside the shell (1), and the negative electrode tank (212) is arranged on the inner side of the shell (1).

3. The shell structure of a lithium polymer battery according to claim 2, characterized in that: The support assembly (22) comprises a support diaphragm (221) and a support frame (222); the support diaphragm (221) is arranged on the outside of the positive electrode can (211); and the support frame (222) is arranged on the outer wall of the support diaphragm (221).

4. The outer shell structure of a lithium polymer battery according to claim 1, characterized in that: The sealing assembly (23) comprises a packaging body (231) and a battery cover (232); the packaging body (231) is arranged on the inner wall of the housing (1), and the battery cover (232) is arranged on the inner side of the packaging body (231).

5. The outer shell structure of a lithium polymer battery according to claim 1, characterized in that: The safety component (24) comprises a safety valve button (241) and a pressure relief port (242); the safety valve button (241) is arranged on the outside of the housing (1), and the pressure relief port (242) is arranged on one side of the safety valve button (241).

6. The outer shell structure of a lithium polymer battery according to claim 1, characterized in that: A heat dissipation assembly (3) is provided on the other side of the shell (1), and the heat dissipation assembly (3) comprises a heat dissipation plate (31) and a heat dissipation port (32). A heat dissipation plate (31) is provided on the other side of the shell (1), and a heat dissipation port (32) is provided on the outer wall of the heat dissipation plate (31).

7. The outer shell structure of a lithium polymer battery according to claim 1, characterized in that: A discharge assembly (4) is arranged above the shell (1), and the discharge assembly (4) comprises a connecting piece (41) and a discharge terminal (42). A connection piece (41) is arranged above the shell (1), and a discharge terminal (42) is arranged at one end of the connection piece (41).

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