Lithium battery protection device based on new energy automobile

Abstract

The utility model discloses a lithium battery protection device based on a new energy automobile, and relates to the technical field of lithium battery protection devices. The lithium battery protection device based on the new energy automobile comprises a protection box with the hollow bottom, a protection pad is arranged on the inner side of a grid frame, the inner wall of the protection pad is connected with a lithium battery shell, a lithium battery module is connected into the lithium battery shell, the upper end of the lithium battery module is connected with a mica heat insulation sheet, and the lower end of the mica heat insulation sheet is connected with a lithium battery. And the upper end of the mica heat insulation sheet is connected with a fireproof coating steel cover. The upper end of the lithium battery module is connected with a mica heat insulation sheet, the lithium battery module can insulate heat and is not prone to combustion through the mica heat insulation sheet, air enters the u-shaped bottom plate through the air inlet partition plate when the new energy automobile moves, double-layer protection is conducted on the lithium battery module through the protection box and the lithium battery shell, and the service life of the lithium battery module is prolonged. And the protective pad in the grid frame can play a role in buffering and protecting the lithium battery shell.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery protection devices, in particular to a lithium battery protection device based on new energy vehicles. Background Art

[0002] New energy vehicles refer to vehicles that use non-traditional automotive fuels as their power source, or vehicles that use traditional automotive fuels but have new on-board power devices. These vehicles integrate advanced power control and drive technologies and have the characteristics of advanced technical principles, new technologies, and new structures.

[0003] Lithium-ion batteries are rechargeable batteries that work on the principle of lithium ions moving between a positive electrode and a negative electrode. The negative electrode of these batteries usually uses graphite or other carbon materials, while the positive electrode uses lithium-containing compounds such as lithium iron phosphate, lithium manganese oxide, etc.

[0004] In the prior art, lithium batteries are usually installed in lithium battery protection boxes of new energy vehicles. However, during the movement of new energy vehicles, bumps and shaking may occur, which may easily cause the lithium battery to collide with the inner wall of the lithium battery protection box, causing damage to the lithium battery and affecting the service life of the lithium battery. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the utility model provides a lithium battery protection device based on new energy vehicles, which solves the problem that the lithium battery may generate bumps and shakes during the driving of the vehicle.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the utility model is implemented through the following technical solutions: a lithium battery protection device based on new energy vehicles includes a protection box with a hollow bottom, the inner wall of the protection box is fixedly connected to a grid frame, the inner side of the grid frame is provided with a protective pad, the inner wall of the protective pad is connected to a lithium battery shell, and the lithium battery shell is located in the protection box, a lithium battery module is connected to the lithium battery shell, the upper end of the lithium battery module is connected to a mica thermal insulation sheet, and the mica thermal insulation sheet is located at the inner upper end of the lithium battery shell, the upper end of the mica thermal insulation sheet is connected to a fireproof coated steel cover, the fireproof coated steel cover is located at the upper end of the lithium battery shell, and the fireproof coated steel cover is located in the protection box, the lower end of the protection box is connected to a U-shaped bottom plate, and the U-shaped bottom plate is located on the lower side of the grid frame, the left and right ends of the U-shaped bottom plate are connected to an intake baffle, and the intake baffle is connected to the lower end of the protection box.

[0009] Preferably, the upper end of the mica thermal insulation sheet is parallel to the surface of the lithium battery shell, and the width of the lower end of the fire-resistant coated steel cover is the same as the width of the lithium battery shell.

[0010] Preferably, a plurality of first filter ventilation holes are provided at the lower end of the lithium battery housing, and the first filter ventilation holes are located on the upper side of the bottom grid frame.

[0011] Preferably, a plurality of groups of second filter ventilation holes matched with the first filter ventilation holes are provided at the bottom of the grid frame, and the second filter ventilation holes are vertically parallel to the first filter ventilation holes.

[0012] Preferably, the length of the second filter ventilation hole is greater than that of the first filter ventilation hole, and the second filter ventilation hole is located on the upper side of the U-shaped bottom plate.

[0013] Preferably, the inner bottom wall of the U-shaped bottom plate is connected to a plurality of groups of guide plates, and the guide plates are located at the lower side of the second filtering ventilation holes.

[0014] Preferably, the gaps between the grid frames and the interior of the protection box form a cavity, and the front and rear sides of the second filter ventilation hole are located in the cavity.

[0015] (III) Beneficial effects

[0016] The utility model provides a lithium battery protection device based on new energy vehicles. It has the following beneficial effects:

[0017] The protective box is connected to a grille frame, the inner wall of the grille frame is connected to a protective pad, the inner wall of the protective pad is connected to a lithium battery shell, a lithium battery module is arranged in the lithium battery shell, a mica heat insulation sheet is connected to the upper end of the lithium battery module, the mica heat insulation sheet makes the lithium battery module heat-insulated and not easy to burn, the upper end of the mica heat insulation sheet is connected to a fire-resistant coated steel cover, the fire-resistant coated steel cover can also play a role in preventing the lithium battery module from fire and combustion, the left and right ends of the U-shaped bottom plate at the lower end of the protective box are connected to air intake baffles, when the new energy vehicle moves, air enters the U-shaped bottom plate through the air intake baffle, the inner bottom wall of the U-shaped bottom plate is connected to multiple groups of guide plates, the wind is allowed to enter the grille frame upward through the guide plates, and the wind is allowed to enter the lithium battery shell through the first filter ventilation hole and the second filter ventilation hole, so as to dissipate heat for the lithium battery module, and the lithium battery module is double-protected by the protective box and the lithium battery shell, and the protective pad in the grille frame can play a role in buffering and protecting the lithium battery shell, and can reduce bumps and shaking. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 2 This is a schematic diagram of the lithium battery housing of the utility model;

[0020] Figure 3 This is a schematic diagram of the grille frame of the utility model;

[0021] Figure 4 This is a schematic diagram of the U-shaped bottom plate of the utility model;

[0022] In the figure: 1. protection box; 2. grille frame; 3. protection pad; 4. lithium battery shell; 5. lithium battery module; 6. mica insulation sheet; 7. fire-resistant coated steel cover; 8. U-shaped bottom plate; 9. air intake baffle; 10. first filter ventilation hole; 11. second filter ventilation hole; 12. guide plate; 13. cavity. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1-4The utility model provides a technical solution: a lithium battery protection device based on new energy vehicles includes a protection box 1 with a hollow bottom, the inner wall of the protection box 1 is fixedly connected to a grid frame 2, the inner side of the grid frame 2 is provided with a protection pad 3, the inner wall of the protection pad 3 is connected to a lithium battery shell 4, and the lithium battery shell 4 is located in the protection box 1, and a lithium battery module 5 is connected to the lithium battery shell 4, and the upper end of the lithium battery module 5 is connected to a mica insulation sheet 6, and the mica insulation sheet 6 is located at the inner upper end of the lithium battery shell 4, and the upper end of the mica insulation sheet 6 is connected to a fireproof coating steel cover 7, the fireproof coating steel cover 7 is located at the upper end of the lithium battery shell 4, and the fireproof coating steel cover 7 is located in the protection box 1, the lower end of the protection box 1 is connected to a U-shaped bottom plate 8, and the U-shaped bottom plate 8 is located on the lower side of the grid frame 2, and the left and right ends of the U-shaped bottom plate 8 are connected to an intake baffle 9, and the intake baffle 9 is connected to the lower end of the protection box 1. The protective box 1 is connected to a grid frame 2, the inner wall of the grid frame 2 is connected to a protective pad 3, the inner wall of the protective pad 3 is connected to a lithium battery housing 4, a lithium battery module 5 is arranged in the lithium battery housing 4, the upper end of the lithium battery module 5 is connected to a mica thermal insulation sheet 6, the mica thermal insulation sheet 6 makes the lithium battery module 5 insulated and not easy to burn, the upper end of the mica thermal insulation sheet 6 is connected to a fireproof coating steel cover 7, the fireproof coating steel cover 7 can also play a role in preventing the lithium battery module 5 from fire and combustion, the left and right ends of the U-shaped bottom plate 8 at the lower end of the protective box 1 are connected to the air intake baffle 9, through the new When the energy vehicle is moving, air enters the U-shaped bottom plate 8 through the air intake baffle 9. The inner bottom wall of the U-shaped bottom plate 8 is connected to multiple groups of guide plates 12. The wind enters the grille frame 2 upward through the guide plates 12, and enters the lithium battery housing 4 through the first filter ventilation hole 10 and the second filter ventilation hole 11, so as to dissipate heat for the lithium battery module 5. The lithium battery module 5 is double-protected by the protective box 1 and the lithium battery housing 4. The protective pad 3 in the grille frame 2 can provide buffering protection for the lithium battery housing 4, and can reduce bumps and shaking.

[0025] See also Figure 1-4 The utility model provides a technical solution: the upper end of the mica heat insulation sheet 6 is parallel to the surface of the lithium battery housing 4, and the width of the lower end of the fire-resistant coating steel cover 7 is the same as the width of the lithium battery housing 4. The upper end of the mica heat insulation sheet 6 is parallel to the surface of the lithium battery housing 4, and the lithium battery module 5 can be completely covered in the lithium battery housing 4, thereby having a more efficient heat insulation and flame retardant effect.

[0026] See also Figure 1-4 The utility model provides a technical solution: a plurality of first filter ventilation holes 10 are provided at the lower end of the lithium battery housing 4, and the first filter ventilation holes 10 are located on the upper side of the bottom grid frame 2. The first filter ventilation holes 10 at the lower end of the lithium battery housing 4 allow wind to enter the interior, so that the lithium battery module 5 can dissipate heat.

[0027] See also Figure 1-4 The utility model provides a technical solution: the bottom of the grid frame 2 is provided with multiple groups of second filter ventilation holes 11 adapted to the first filter ventilation holes 10, and the second filter ventilation holes 11 are vertically parallel to the first filter ventilation holes 10. The multiple groups of second filter ventilation holes 11 at the lower end of the grid frame 2 allow wind to enter the grid frame 2, so that the protection box 1 can be cooled and dust can be prevented from entering.

[0028] See also Figure 1-4 The utility model provides a technical solution: the length of the second filter ventilation hole 11 is greater than the length of the first filter ventilation hole 10, and the second filter ventilation hole 11 is located on the upper side of the U-shaped bottom plate 8. The length of the second filter ventilation hole 11 is greater than the length of the first filter ventilation hole 10, so that the wind can be transmitted to the inside of the protective box 1.

[0029] See also Figure 1-4 The utility model provides a technical solution: the inner bottom wall of the U-shaped bottom plate 8 is connected with multiple groups of guide plates 12, and the guide plates 12 are located at the lower side of the second filtering ventilation hole 11. The inner bottom wall of the U-shaped bottom plate 8 is connected with multiple groups of guide plates 12, and the guide plates 12 allow the wind direction to enter the protective box 1 upward.

[0030] See also Figure 1-4 The utility model provides a technical solution: the gap between the grid frames 2 and the inside of the protection box 1 form a cavity 13, and the front and rear sides of the second filter ventilation hole 11 are located in the cavity 13. The gap between the grid frames 2 and the inside of the protection box 1 form a cavity 13, and the wind can enter the cavity 13 through the second filter ventilation hole 11, so that the whole device can be cooled.

[0031] During operation, the lithium battery module 5 can be insulated and not easy to burn through the mica insulation sheet 6. The upper end of the mica insulation sheet 6 is connected with a fireproof coating steel cover 7, which can also prevent the lithium battery module 5 from burning. The left and right ends of the U-shaped bottom plate 8 at the lower end of the protection box 1 are connected with air intake baffles 9. When the new energy vehicle moves, air enters the U-shaped bottom plate 8 through the air intake baffles 9. The inner bottom wall of the U-shaped bottom plate 8 is connected with multiple groups of guide plates 12. The guide plates 12 allow the wind to enter the grille frame 2 upward, and pass through The first filter ventilation hole 10 and the second filter ventilation hole 11 allow wind to enter the lithium battery housing 4, thereby dissipating the heat of the lithium battery module 5. The gap between the grid frame 2 and the interior of the protective box 1 form a cavity 13. The wind can enter the cavity 13 through the second filter ventilation hole 11, so that the entire device can be cooled. The lithium battery module 5 is double-protected by the protective box 1 and the lithium battery housing 4. The protective pad 3 in the grid frame 2 can provide buffering protection for the lithium battery housing 4 and reduce bumps and shaking.

[0032] In summary, this lithium battery protection device based on new energy vehicles solves the problem of lithium batteries causing bumps and shakes during the driving of the car.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although the 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 lithium battery protection device based on new energy vehicles, comprising a protection box (1) with a hollow bottom, characterized in that: The inner wall of the protection box (1) is fixedly connected to a grid frame (2), a protection pad (3) is provided on the inner side of the grid frame (2), the inner wall of the protection pad (3) is connected to a lithium battery housing (4), and the lithium battery housing (4) is located in the protection box (1), the lithium battery housing (4) is connected to a lithium battery module (5), the upper end of the lithium battery module (5) is connected to a mica heat insulation sheet (6), and the mica heat insulation sheet (6) is located at the inner upper end of the lithium battery housing (4), The upper end of the mica heat insulation sheet (6) is connected to a fireproof coating steel cover (7), the fireproof coating steel cover (7) is located at the upper end of the lithium battery housing (4), and the fireproof coating steel cover (7) is located in the protection box (1), the lower end of the protection box (1) is connected to a U-shaped bottom plate (8), and the U-shaped bottom plate (8) is located on the lower side of the grid frame (2), the left and right ends of the U-shaped bottom plate (8) are connected to an air intake baffle (9), and the air intake baffle (9) is connected to the lower end of the protection box (1).

2. A lithium battery protection device based on new energy vehicles according to claim 1, characterized in that: The upper end of the mica heat insulation sheet (6) is parallel to the surface of the lithium battery housing (4), and the width of the lower end of the fireproof coating steel cover (7) is the same as the width of the lithium battery housing (4).

3. A lithium battery protection device based on new energy vehicles according to claim 1, characterized in that: A plurality of first filter ventilation holes (10) are provided at the lower end of the lithium battery housing (4), and the first filter ventilation holes (10) are located on the upper side of the bottom grid frame (2).

4. A lithium battery protection device based on new energy vehicles according to claim 3, characterized in that: The bottom of the grid frame (2) is provided with a plurality of groups of second filtering ventilation holes (11) adapted to the first filtering ventilation holes (10), and the second filtering ventilation holes (11) are vertically parallel to the first filtering ventilation holes (10).

5. A lithium battery protection device based on new energy vehicles according to claim 4, characterized in that: The length of the second filtering ventilation hole (11) is greater than the length of the first filtering ventilation hole (10), and the second filtering ventilation hole (11) is located on the upper side of the U-shaped bottom plate (8).

6. A lithium battery protection device based on new energy vehicles according to claim 5, characterized in that: The inner bottom wall of the U-shaped bottom plate (8) is connected to a plurality of groups of guide plates (12), and the guide plates (12) are located at the lower side of the second filtering ventilation hole (11).

7. A lithium battery protection device based on new energy vehicles according to claim 6, characterized in that: The gaps between the grid frames (2) and the interior of the protection box (1) form a cavity (13), and the front and rear sides of the second filtering ventilation hole (11) are located in the cavity (13).

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