Sodium ion battery structure

Abstract

The utility model relates to the technical field of batteries, and in particular to a sodium ion battery structure. The utility model provides a sodium ion battery structure, comprising: a shell and a cover body, wherein one side of the shell is open, the cover body is installed at the opening position by screws, and a plurality of sodium ion batteries are arranged between the shell and the cover body; the utility model makes the weight of the battery structure lighter, reduces the extra weight of the electric vehicle, increases the service life, and enhances the low temperature resistance effect by arranging the sodium ion batteries; by arranging the bracket structure, the stability of the sodium ion battery cell fixation is enhanced, and at the same time, by point-contact fixation, the contact area is reduced, a heat flow discharge channel is formed, heat accumulation is prevented, and the heat dissipation effect is enhanced.

Description

Technical Field

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

[0002] The battery structure used in existing electric vehicles is relatively common, such as ordinary lead-acid batteries. For details, please refer to Figure 1 ,like Figure 1 As shown, the lead-acid battery includes: a battery slot 1, a pole group 2 and a battery cover 3. Ordinary lead-acid batteries are not only heavy, resulting in a heavier load on the electric vehicle, but also have a smaller capacity, which makes the electric vehicle's mileage shorter.

[0003] Therefore, it is necessary to provide a sodium ion battery structure. Utility Model Content

[0004] The utility model provides a sodium ion battery structure to solve the above technical problems.

[0005] In order to achieve the above-mentioned purpose, the embodiment of the utility model provides a sodium ion battery structure, including: a shell and a cover, one side of the shell is open, the cover is installed at the open position by screws, and a plurality of sodium ion batteries are arranged between the shell and the cover; the inner wall of the shell and the inner wall of the cover are both provided with EVA cotton; two groups of bracket structures are arranged in the cavity formed by the shell and the cover, and the sodium ion battery is arranged in the cavity through the two bracket structures; both ends of the sodium ion battery are provided with connecting pieces; the sodium ion battery is close to An epoxy plate is provided at one end of the cover body, one of the connecting pieces is against the epoxy plate, and the connecting piece on the other side is against the EVA cotton; the bracket structure includes a limit plate, and the limit plate is fixedly connected to the inner wall of the shell; a positioning ring corresponding to the sodium ion battery cell is provided on the limit plate; a plurality of contact parts are provided on the inner wall of the positioning ring; the contact part is a rubber strip, a contact pad is provided on one side of the rubber strip, and a grid groove is provided on the surface of the contact pad; at least one ventilation channel is provided on the side wall of the positioning ring between two adjacent rubber strips.

[0006] Compared with the prior art, the beneficial effects of the utility model are:

[0007] 1. By setting up sodium ion cells, the battery structure is made lighter, the extra weight of electric vehicles is reduced, the service life is increased, and the low temperature resistance is enhanced;

[0008] 2. By setting up a bracket structure, the stability of the sodium ion battery cell is enhanced. At the same time, through point-contact fixation, the contact area is reduced, a heat flow discharge channel is formed, heat accumulation is prevented, and the heat dissipation effect is enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0010] Figure 1 It is a schematic diagram of the structure of a lead-acid battery in the prior art;

[0011] Figure 2 A three-dimensional diagram of the optimal embodiment of the sodium ion battery structure of the utility model;

[0012] Figure 3 It is a stereogram of the optimal embodiment of the utility model.

[0013] Among them, 1. Shell; 2. Cover; 3. Bracket structure; 31. Limiting plate; 32. Positioning ring; 33. Contact part; 34. Contact pad; 35. Ventilation channel; 4. Connecting piece; 5. Sodium ion battery cell; 6. EVA cotton; 7. Epoxy board. DETAILED DESCRIPTION

[0014] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0015] For example, see Figure 2 , Figure 2 This is a stereogram of the optimal embodiment of the sodium ion battery structure of the utility model. Figure 2As shown, at least one embodiment provides a sodium ion battery structure, including: a shell 1, a cover 2 and a plurality of sodium ion cells 5, one side of the shell 1 is open, the cover 2 is installed at the opening position by screws, the shell 1 and the cover 2 are detachable, and a plurality of sodium ion cells 5 are arranged between the shell 1 and the cover 2; specifically, the sodium ion cell 5 is lighter than the lead-acid battery, and can travel farther under the same conditions, and the sodium ion cell 5 has a BMS, each battery will not have a single cell of the lead-acid battery lagging behind, and the service life is longer. In addition, the sodium ion cell 5 can be recycled 1500 times, which is higher than the 400 times of the lead-acid battery. The sodium ion cell 5 is resistant to low temperature, and the capacity of the sodium ion cell 5 in a -20°C environment is 90%, which is higher than the 30% of the lead-acid battery. The inner wall of the shell 1 and the inner wall of the cover 2 are both provided with EVA cotton 6. (EVA is an ethylene-vinyl acetate copolymer material), EVA cotton 6 has a shock-absorbing and buffering effect, preventing the sodium ion battery 5 from directly abutting against the inner wall of the shell 1, and effectively protecting the sodium ion battery 5; two sets of bracket structures 3 are arranged in the cavity formed by the shell 1 and the cover 2, and the sodium ion battery 5 is arranged in the cavity through the two bracket structures 3. Connecting pieces 4 are arranged at both ends of the sodium ion battery 5. An epoxy board 7 is arranged at one end of the sodium ion battery 5 close to the cover 2, one connecting piece 4 abuts against the epoxy board 7, and the other side connecting piece 4 abuts against the EVA cotton 6.

[0016] For example 2, please refer to Figure 2 .like Figure 2 As shown, at least one embodiment provides a sodium ion battery structure, including: a shell 1 and a cover 2, one side of the shell 1 is open, the cover 2 is installed at the open position by screws, and a plurality of sodium ion cells 5 are arranged between the shell 1 and the cover 2. Specifically, the sodium ion cell 5 is lighter than the lead-acid battery and can travel a longer mileage under the same conditions. Moreover, the sodium ion cell 5 has a BMS, and each battery will not have a single cell lag like the lead-acid battery, and the service life is longer. In addition, the sodium ion cell 5 can be recycled 1,500 times, which is higher than the 400 times of the lead-acid battery. The sodium ion cell 5 is resistant to low temperatures, and the capacity of the sodium ion cell 5 in an environment of -20°C is 90%, which is higher than the 30% of the lead-acid battery. The inner wall of the shell 1 and the inner wall of the cover 2 are both provided with EVA cotton 6. Two sets of bracket structures 3 are provided in the cavity formed by the shell 1 and the cover 2,

[0017] See also Figure 2 Combined with Figure 3 , Figure 3 3D diagram of the optimal embodiment of the present utility model. Figures 2 to 3As shown, the composition structure of the support structure 3 is specifically described below. The support structure 3 includes a limit plate 31, the outer contour of the limit plate 31 coincides with the contour of the shell 1, and the limit plate 31 is fixedly connected to the inner wall of the shell 1. A positioning ring 32 corresponding to the sodium ion battery cell 5 is provided on the limit plate 31, and the center position of the positioning ring 32 is used to fix the sodium ion battery cell 5. It is necessary to add that there is a certain gap between the positioning rings 32, and the gap prevents the two adjacent sodium ion batteries 5 from contacting each other to prevent the heat accumulation. In order to further avoid heat accumulation, a plurality of touch parts 33 are provided on the inner wall of the positioning ring 32. The touch part 33 is a rubber strip, and a contact pad 34 is provided on one side of the rubber strip, and a grid groove is provided on the surface of the contact pad 34. At least one ventilation channel 35 is provided on the side wall of the positioning ring 32 between two adjacent rubber strips. The ventilation channel 35 is an exhaust hole. A heat flow discharge channel is formed between the inner wall of the positioning ring 32 and the outer wall of the sodium ion battery cell 5, and the hot air in the heat flow discharge channel is discharged through the ventilation channel 35.

[0018] The sodium ion battery cell 5 is arranged in the cavity through two support structures 3. Connecting pieces 4 are arranged at both ends of the sodium ion battery cell 5. An epoxy board 7 is arranged at one end of the sodium ion battery cell 5 close to the cover body 2, one connecting piece 4 and the epoxy board 7 are butted against each other, and the connecting piece 4 and the EVA cotton 6 are butted against each other on the other side.

[0019] In summary, by providing the sodium ion battery cell 5, the weight of the battery structure is made lighter, the extra weight of the electric vehicle is reduced, the service life is increased, and the low temperature resistance effect is enhanced; by providing the bracket structure 3, the stability of the sodium ion battery cell 5 is enhanced, and at the same time, through point-contact fixation, the contact area is reduced, a heat flow discharge channel is formed, heat accumulation is prevented, and the heat dissipation effect is enhanced.

[0020] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A sodium ion battery structure, characterized in that: include: A shell (1) and a cover (2), wherein one side of the shell (1) is open, the cover (2) is mounted at the open position by means of screws, and a plurality of sodium ion batteries (5) are arranged between the shell (1) and the cover (2); The inner wall of the shell (1) and the inner wall of the cover (2) are both provided with EVA cotton (6); Two groups of support structures (3) are arranged in the cavity formed by the shell (1) and the cover (2), and the sodium ion battery cell (5) is arranged in the cavity via the two support structures (3); Both ends of the sodium ion battery cell (5) are provided with connecting pieces (4); an epoxy board (7) is provided at one end of the sodium ion battery cell (5) close to the cover body (2), one of the connecting pieces (4) and the epoxy board (7) are in contact with each other, and the other end of the connecting piece (4) and the EVA cotton (6) are in contact with each other; The support structure (3) comprises a limit plate (31), the limit plate (31) being fixedly connected to the inner wall of the shell (1); a positioning ring (32) corresponding to the sodium ion battery cell (5) is arranged on the limit plate (31); a plurality of contact parts (33) are arranged on the inner wall of the positioning ring (32); the contact part (33) is a rubber strip, a contact pad (34) is arranged on one side of the rubber strip, and a grid groove is arranged on the surface of the contact pad (34); and at least one ventilation channel (35) is arranged on the side wall of the positioning ring (32) between two adjacent rubber strips.

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