Novel cylindrical sodium ion battery

Abstract

The utility model discloses a novel cylindrical sodium ion battery, which relates to the technical field of sodium ion batteries and comprises a shell, and a buffer mechanism is arranged in the shell. The buffer mechanism comprises a plurality of mounting parts and a plurality of elastic parts, a cavity is formed in the shell, one end of each elastic part is fixedly mounted on the side wall of the corresponding mounting part, the other end of each elastic part is fixedly mounted in the cavity, and the mounting parts are mounted in the cavity through the elastic parts; according to the technical scheme provided by the utility model, the buffer mechanism is adopted, when the shell is subjected to external impact, the shell is driven to deform, and at the moment, the elastic piece in the cavity deforms, so that the impact force is absorbed and buffered, and the impact force is prevented from being transmitted into the shell to damage the inner core of the sodium ion battery.

Description

Technical Field

[0001] The utility model relates to the technical field of sodium ion batteries, in particular to a novel cylindrical sodium ion battery. Background Art

[0002] Compared with lithium-ion batteries, sodium-ion batteries have lower costs. The price of sodium carbonate is only 0.9-2.8 yuan / kg. The crustal content of sodium resources is about 2.8%, while the reserves of lithium resources in the crust are only 0.0065%. Compared with the production cost of lithium-ion batteries, the production cost of sodium-ion batteries is greatly reduced. Therefore, sodium-ion batteries have become a hot topic of research among scientists.

[0003] Traditional cylindrical sodium-ion batteries have poor safety performance and are very likely to cause damage to the internal core when impacted, and may even cause spontaneous combustion. Utility Model Content

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a new cylindrical sodium ion battery to solve the problem that the cylindrical sodium ion battery in the prior art has poor safety performance and is very likely to cause damage to the internal core when impacted, and even cause spontaneous combustion.

[0005] In view of this, the present invention provides a novel cylindrical sodium ion battery, comprising a shell, wherein a buffer mechanism is provided inside the shell;

[0006] The buffer mechanism includes several mounting parts and several elastic parts. A cavity is opened inside the shell. One end of the elastic part is fixedly mounted on the side wall of the mounting part, and the other end of the elastic part is fixedly mounted inside the cavity. The mounting part is installed inside the cavity through the elastic part.

[0007] Optionally, two elastic members are installed in a circumferential array on the side wall of each mounting member.

[0008] Optionally, the mounting member is annular and the elastic member is J-shaped.

[0009] Optionally, a communication hole communicating with the interior of the shell is opened in the cavity, and the cavity is connected with the interior of the shell through the communication hole.

[0010] Optionally, a mounting film is fixedly installed inside the communicating hole, and a groove is formed on a side wall of the mounting film.

[0011] Optionally, a mounting groove is provided on the top of the shell, and the mounting groove is communicated with the cavity.

[0012] Optionally, a connecting frame is fixedly installed inside the installation groove, a telescopic bellows is fixedly installed on the top of the connecting frame, and a mounting cover is fixedly installed on the top of the telescopic bellows.

[0013] It can be seen from the above technical solutions that the embodiments of the present invention have the following advantages:

[0014] 1. The utility model discloses a novel cylindrical sodium-ion battery, which adopts a buffer mechanism. When the shell is subjected to external impact, the shell will be deformed. At this time, the elastic member inside the cavity will also deform to absorb and buffer the impact force, thereby preventing the impact force from being transmitted to the inside of the shell and causing damage to the inner core of the sodium-ion battery.

[0015] 2. A new cylindrical sodium-ion battery of the present invention adopts a telescopic bellows design. With this design, when the battery expansion gas rushes into the cavity, the gas inside the cavity will be filled into the telescopic bellows through the connecting frame, causing the telescopic bellows to extend and lift the installation cover. The red installation cover can serve as a reminder, so that the expanded and damaged battery can be discovered at the first time during maintenance, and the expansion of the battery shell can be avoided at the same time.

[0016] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a partial cross-sectional structural diagram of the utility model;

[0020] Figure 3 For this utility model Figure 2 A in the middle is an enlarged structural diagram;

[0021] Figure 4 For this utility model Figure 2 Enlarged structural diagram at point B in the middle.

[0022] Explanation of the accompanying drawings: 1. Shell; 2. Mounting groove; 3. Mounting cover; 4. Cavity; 5. Mounting part; 6. Elastic part; 7. Connecting hole; 8. Mounting membrane; 9. Groove; 10. Connecting frame; 11. Telescopic bellows. DETAILED DESCRIPTION

[0023] The following is an explanation and description of the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0024] A novel cylindrical sodium ion battery according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0025] Example 1

[0026] For easier understanding, see Figures 1 to 4 The utility model provides an embodiment of a novel cylindrical sodium ion battery, comprising a housing 1, wherein a buffer mechanism is provided inside the housing 1;

[0027] The buffer mechanism includes several mounting parts 5 and several elastic parts 6. A cavity 4 is opened inside the shell 1. One end of the elastic part 6 is fixedly mounted on the side wall of the mounting part 5, and the other end of the elastic part 6 is fixedly mounted inside the cavity 4. The mounting part 5 is installed inside the cavity 4 through the elastic part 6.

[0028] It should be noted that a positive electrode is provided on the top of the shell 1, a negative electrode is provided at the bottom of the shell 1, and a sodium ion battery core is installed inside the shell 1. The installation part 5 can play a supporting role. When the shell 1 is subjected to external impact, the shell 1 will be deformed. At this time, the elastic part 6 inside the cavity 4 will also deform to absorb and buffer the impact force, thereby preventing the impact force from being transmitted to the inside of the shell 1 and causing damage to the sodium ion battery core.

[0029] In some embodiments, as Figure 3 As shown, two elastic members 6 are mounted in a circumferential array on the side wall of each mounting member 5 .

[0030] It should be noted that, by arranging the elastic member 6 on the side wall of the mounting member 5 , the elastic member 6 drives the mounting member 5 to rotate when impacted, and deforms at the same time, thereby absorbing and buffering the impact force.

[0031] In some embodiments, as Figure 3 As shown, a connecting hole 7 communicating with the interior of the shell 1 is opened inside the cavity 4. The cavity 4 is connected to the interior of the shell 1 through the connecting hole 7. A mounting film 8 is fixedly installed inside the connecting hole 7. A groove 9 is opened on the side wall of the mounting film 8.

[0032] It should be noted that the mounting film 8 is an aluminum metal film, and the mounting film 8 is relatively thin. By setting the connecting hole 7, the cavity 4 can be connected to the inside of the shell 1. By setting the mounting film 8, when the battery core inside the shell 1 expands and produces gas, the gas will break through the mounting film 8 so that the gas can enter the cavity 4. By opening a groove 9 on the side wall of the mounting film 8, the battery core can be stably ruptured when it expands.

[0033] Example 2

[0034] In some embodiments, as Figure 4 As shown, a mounting groove 2 is provided on the top of the shell 1, which is communicated with the cavity 4. A connecting frame 10 is fixedly installed inside the mounting groove 2, a telescopic bellows 11 is fixedly installed on the top of the connecting frame 10, and a mounting cover 3 is fixedly installed on the top of the telescopic bellows 11.

[0035] It should be noted that the telescopic bellows 11 is yellow and the mounting cover 3 is red. By installing the connecting frame 10 and the telescopic bellows 11 inside the mounting groove 2, when the battery expansion gas rushes into the cavity 4, the gas inside the cavity 4 will be filled into the telescopic bellows 11 through the connecting frame 10, causing the telescopic bellows 11 to extend and lift the mounting cover 3. The red mounting cover 3 can serve as a reminder, so that the expanded and damaged battery can be discovered at the first time during maintenance, and the expansion of the battery housing 1 can be avoided at the same time.

[0036] Working principle: When the shell 1 is subjected to external impact, the shell 1 will be deformed. At this time, the elastic part 6 inside the cavity 4 will also be deformed to absorb and buffer the impact force, so as to prevent the impact force from being transmitted to the inside of the shell 1 and causing damage to the inner core of the sodium ion battery. When the inner core of the battery inside the shell 1 expands and produces gas, the gas will break through the mounting membrane 8 so that the gas can enter the interior of the cavity 4. When the battery expansion gas rushes into the interior of the cavity 4, the gas inside the cavity 4 will be filled into the interior of the telescopic bellows 11 through the connecting frame 10, so that the telescopic bellows 11 is extended and the mounting cover 3 is lifted. The red mounting cover 3 can serve as a reminder, so that the expanded and damaged battery can be discovered at the first time during maintenance, and the expansion of the battery shell 1 can be avoided at the same time.

[0037] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A novel cylindrical sodium ion battery, characterized in that: It comprises a housing (1), wherein a buffer mechanism is provided inside the housing (1); The buffer mechanism comprises a plurality of mounting members (5) and a plurality of elastic members (6); a cavity (4) is provided inside the housing (1); one end of the elastic member (6) is fixedly mounted on a side wall of the mounting member (5); the other end of the elastic member (6) is fixedly mounted inside the cavity (4); and the mounting member (5) is mounted inside the cavity (4) via the elastic member (6).

2. A novel cylindrical sodium ion battery according to claim 1, characterized in that: Two elastic members (6) are installed in a circumferential array on the side wall of each mounting member (5).

3. A novel cylindrical sodium ion battery according to claim 1, characterized in that: The mounting member (5) is annular, and the elastic member (6) is J-shaped.

4. A novel cylindrical sodium ion battery according to claim 1, characterized in that: A communication hole (7) communicating with the interior of the shell (1) is provided inside the cavity (4); the cavity (4) is communicated with the interior of the shell (1) through the communication hole (7).

5. A novel cylindrical sodium ion battery according to claim 4, characterized in that: A mounting film (8) is fixedly mounted inside the communicating hole (7), and a groove (9) is formed on a side wall of the mounting film (8).

6. A novel cylindrical sodium ion battery according to claim 1, characterized in that: A mounting groove (2) is provided on the top of the housing (1), and the mounting groove (2) is communicated with the cavity (4).

7. A novel cylindrical sodium ion battery according to claim 6, characterized in that: A connecting frame (10) is fixedly installed inside the installation groove (2), a telescopic bellows (11) is fixedly installed on the top of the connecting frame (10), and a mounting cover (3) is fixedly installed on the top of the telescopic bellows (11).

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