New energy automobile battery pack flame-retardant protection structure

Abstract

The utility model relates to the technical field of battery pack flame-retardant protection, in particular to a new energy automobile battery pack flame-retardant protection structure which comprises an aerogel flame-retardant sheet arranged on the inner side face of a flame-retardant box, a positioning plate arranged on the side face of the flame-retardant box, a limiting frame arranged in a sealing cover, a spring arranged in the limiting frame and an elastic plate arranged at one end of the spring. A supporting rod is arranged on the surface of the elastic plate; the new energy battery pack has the beneficial effects that after the new energy battery pack is used for a long time and is spontaneously combusted due to special reasons, the aerogel flame-retardant sheet can be used for carrying out primary flame retardance on the new energy battery pack, after the new energy battery pack is strongly spontaneously combusted, the aerogel flame-retardant sheet is damaged, the thin plate can be combusted and damaged, and then the elastic plate can lose limitation; therefore, the flame-retardant powder in the limiting frame can be sprayed out through cooperation of the elastic plate and the spring, spontaneous combustion of the new energy battery pack can be extinguished, and the flame-retardant effect of the new energy battery pack is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of flame retardant protection of battery packs, in particular to a flame retardant protection structure of a battery pack of a new energy vehicle. Background Art

[0002] New energy vehicles, especially electric vehicles, are an important development direction of the new energy vehicle industry. Electric vehicles are powered by on-board power and use electric motors to drive the wheels, which have less impact on the environment. Safety is the prerequisite for the development of electric vehicles. Without safety, there is no future for electric vehicles.

[0003] In the prior art, in order to improve the safety of new energy battery packs, the new energy battery packs are installed inside a flame retardant box. The flame retardant box can prevent the new energy battery from spontaneously combusting and further expanding the danger.

[0004] However, the interior of the traditional flame retardant box mainly relies on aerogel flame retardant sheets to flame retard the burning new energy battery pack. But when the new energy battery pack spontaneously ignites more seriously, the flame retardant effect of the aerogel flame retardant sheet is relatively reduced and more serious consequences may occur. For this reason, the utility model proposes a flame retardant protection structure for a new energy vehicle battery pack to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of the utility model is to provide a flame retardant protection structure for a new energy vehicle battery pack to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flame retardant protection structure for a battery pack of a new energy vehicle, the flame retardant protection structure for a battery pack of a new energy vehicle comprising: a flame retardant box, an aerogel flame retardant sheet is arranged on the inner side of the flame retardant box, a new energy battery pack is placed in the flame retardant box, and a positioning plate is arranged on the side of the flame retardant box;

[0007] The sealing cover has a limit frame in it, a spring in the limit frame, an elastic plate at one end of the spring, a support rod on the surface of the elastic plate, and a thin plate at one end of the support rod.

[0008] Preferably, the positioning plate is fixedly connected to the side of the flame retardant box, a positioning hole is provided on the surface of the positioning plate, the aerogel flame retardant sheet is fixedly connected to the inner side of the flame retardant box, and a limiting groove is provided on the surface of the flame retardant box.

[0009] Preferably, a fixing plate is arranged on the side of the sealing cover, a limiting screw is arranged on the side of the fixing plate, a limiting nut is threadedly connected to the surface of the limiting screw, and the fixing plate can be inserted into the positioning hole.

[0010] Preferably, a card plate is provided at the bottom of the sealing cover, which can be inserted into the limiting groove. An aerogel flame retardant sheet is also provided at the bottom of the sealing cover. A through hole is opened at the bottom of the sealing cover, and a thin plate is fixedly connected to the side of the through hole.

[0011] Preferably, a guide plate is provided on the end surface of the through hole, and the guide plate is fixed in the through hole at a certain angle. There are multiple groups of through holes, and the multiple groups of through holes are regularly arranged linearly with respect to the bottom of the sealing cover.

[0012] Preferably, one end of the spring is fixedly connected to the bottom surface of the sealing cover, and the other end of the spring is fixedly connected to the surface of the elastic plate, and flame retardant powder is stuffed into the limiting frame.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The flame retardant protective structure of the battery pack of a new energy vehicle proposed by the utility model can, when the new energy battery pack is placed in the flame retardant box during use, use the aerogel flame retardant sheet to perform preliminary flame retardancy on the new energy battery pack after it is used for a long time and spontaneously combusts due to special reasons; when the new energy battery pack spontaneously combusts violently, the aerogel flame retardant sheet can be damaged and the thin plate can be burned and damaged, and then the elastic plate can lose its limit, so that the elastic plate can be used in conjunction with the spring to spray out the flame retardant powder in the limit frame, so that the spontaneous combustion of the new energy battery pack can be extinguished, greatly increasing the flame retardant effect of the new energy battery pack, thus avoiding the situation in which the interior of the traditional flame retardant box mainly relies on the aerogel flame retardant sheet to perform flame retardancy on the burning new energy battery pack, but when the spontaneous combustion of the new energy battery pack is more serious, the flame retardant effect of the aerogel flame retardant sheet is relatively reduced and more serious consequences may occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the utility model when the structure is tilted;

[0017] Figure 3 This is a schematic diagram of the partial structure of the flame retardant box of the utility model;

[0018] Figure 4 It is a partial cross-sectional view of the structure of the utility model;

[0019] Figure 5 for Figure 4 Enlarged structural diagram at A in the middle.

[0020] In the figure: 1. flame retardant box; 2. aerogel flame retardant sheet; 3. new energy battery pack; 4. positioning plate; 5. sealing cover; 6. limit frame; 7. spring; 8. elastic plate; 9. support rod; 10. thin plate; 11. positioning hole; 12. limit groove; 13. fixing plate; 14. limit screw; 15. limit nut; 16. card plate;

[0021] 17. Through hole; 18. Guide plate. DETAILED DESCRIPTION

[0022] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of 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 5 The utility model provides a technical solution: a flame retardant protection structure for a new energy vehicle battery pack, the flame retardant protection structure for a new energy vehicle battery pack comprising: a flame retardant box 1, an aerogel flame retardant sheet 2 is arranged on the inner side of the flame retardant box 1, a new energy battery pack 3 is placed in the flame retardant box 1, and a positioning plate 4 is arranged on the side of the flame retardant box 1; a sealing cover 5, a limited position frame 6 is arranged in the sealing cover 5, a spring 7 is arranged in the limited position frame 6, an elastic plate 8 is arranged at one end of the spring 7, a support rod 9 is arranged on the surface of the elastic plate 8, and a thin plate 10 is arranged at one end of the support rod 9;

[0025] During use, after the new energy battery pack 3 is placed in the flame retardant box 1, when the new energy battery pack 3 is used for a long time and spontaneously ignites due to special reasons, the aerogel flame retardant sheet 2 can be used to perform preliminary flame retardancy on the new energy battery pack 3. When the new energy battery pack 3 spontaneously ignites violently, the aerogel flame retardant sheet 2 can be damaged, which can cause the thin plate 10 to burn and be damaged, and then the elastic plate 8 can lose its limit, so that the elastic plate 8 can be used in conjunction with the spring 7 to spray out the flame retardant powder in the limit frame 6, thereby extinguishing the spontaneous combustion of the new energy battery pack 3, greatly increasing the flame retardant effect of the new energy battery pack 3.

[0026] Embodiment 2

[0027] On the basis of the first embodiment, in order to facilitate the flame retardancy of the new energy battery, an aerogel flame retardant sheet 2 is provided, the positioning plate 4 is fixedly connected to the side of the flame retardant box 1, and a positioning hole 11 is provided on the surface of the positioning plate 4. The aerogel flame retardant sheet 2 is fixedly connected to the inner side of the flame retardant box 1, and a limiting groove 12 is provided on the surface of the flame retardant box 1. A fixing plate 13 is provided on the side of the sealing cover 5, and a limiting screw 14 is provided on the side of the fixing plate 13. The surface of the limiting screw 14 is threaded with a limiting nut 15, and the fixing plate 13 can be inserted into the positioning hole 11. A clamping plate 16 is provided at the bottom of the sealing cover 5, and the clamping plate 16 can be inserted into the limiting groove 12. An aerogel flame retardant sheet 2 is also provided at the bottom of the sealing cover 5, and a through hole 17 is provided at the bottom of the sealing cover 5. The thin plate 10 is fixedly connected to the side of the through hole 17;

[0028] When in use, first place the new energy battery pack 3 inside the flame retardant box 1, then the fixing plate 13 set on the side of the sealing cover 5 can be inserted into the positioning hole 11 and the clamping plate 16 can be inserted into the limiting groove 12, and then the limiting nut 15 can be rotated. The fixing plate 13 can be fixed in the positioning hole 11 by tightening the limiting nut 15, so that the sealing cover 5 can seal the upper surface of the flame retardant box 1. The setting of the aerogel flame retardant sheet 2 improves the safety of the flame retardant box 1 to avoid excessive damage caused by spontaneous combustion of the new energy battery pack 3.

[0029] Embodiment 3

[0030] On the basis of the second embodiment, in order to improve the flame retardant effect of the new energy battery pack 3, a limit frame 6 is provided, a guide plate 18 is provided on the end surface of the through hole 17, and the guide plate 18 is fixed in the through hole 17 at a certain angle. The through holes 17 are provided with multiple groups, and the multiple groups of through holes 17 are regularly arranged linearly with respect to the bottom of the sealing cover 5. One end of the spring 7 is fixedly connected to the bottom surface of the sealing cover 5, and the other end of the spring 7 is fixedly connected to the surface of the elastic plate 8. Flame retardant powder is stuffed into the limit frame 6;

[0031] During use, when the aerogel flame retardant sheet 2 cannot play a flame retardant effect due to the severe spontaneous combustion of the new energy battery pack 3, the spontaneous combustion of the new energy battery pack 3 will cause the thin plate 10 to be damaged and broken, so that the support rod 9 can lose the limiting effect on the elastic plate 8, and the elastic force of the spring 7 can be used to make the elastic plate 8 pop out, so that the flame retardant powder in the limiting frame 6 can be sprayed out, and the flame retardant powder can be sprayed around the inside of the flame retardant box 1 through the inclined setting of the guide plate 18, thereby reducing the spontaneous combustion degree of the new energy battery pack 3 and avoiding further damage problems.

[0032] In actual use, after the new energy battery pack 3 is placed in the flame retardant box 1, when the new energy battery pack 3 is used for a long time and spontaneously combusts due to special reasons, the aerogel flame retardant sheet 2 can be used to perform preliminary flame retardancy on the new energy battery pack 3. When the new energy battery pack 3 spontaneously combusts violently, the aerogel flame retardant sheet 2 can be damaged, which can cause the thin plate 10 to burn and be damaged, and then the elastic plate 8 can lose its limit, so that the elastic plate 8 can be used in conjunction with the spring 7 to spray out the flame retardant powder in the limit frame 6, so that the spontaneous combustion of the new energy battery pack 3 can be extinguished, which greatly increases the flame retardant effect of the new energy battery pack 3. In this way, the traditional flame retardant box 1 is avoided. The interior mainly relies on the aerogel flame retardant sheet 2 to perform flame retardancy on the burning new energy battery pack 3, but when the new energy battery pack 3 spontaneously combusts more seriously, the flame retardant effect of the aerogel flame retardant sheet 2 is relatively reduced, and more serious consequences may occur.

[0033] 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 flame retardant protective structure for a new energy vehicle battery pack, characterized in that: The flame retardant protection structure for a battery pack of a new energy vehicle comprises: a flame retardant box (1), an aerogel flame retardant sheet (2) is arranged on the inner side of the flame retardant box (1), a new energy battery pack (3) is placed in the flame retardant box (1), and a positioning plate (4) is arranged on the side of the flame retardant box (1); A sealing cover (5) is provided inside the sealing cover (5), a limit frame (6) is provided inside the limit frame (6), an elastic plate (8) is provided at one end of the spring (7), a support rod (9) is provided on the surface of the elastic plate (8), and a thin plate (10) is provided at one end of the support rod (9).

2. A flame retardant protective structure for a new energy vehicle battery pack according to claim 1, characterized in that: The positioning plate (4) is fixedly connected to the side of the flame retardant box (1), and a positioning hole (11) is provided on the surface of the positioning plate (4); the aerogel flame retardant sheet (2) is fixedly connected to the inner side of the flame retardant box (1), and a limiting groove (12) is provided on the surface of the flame retardant box (1).

3. The flame retardant protective structure of a new energy vehicle battery pack according to claim 1, characterized in that: A fixing plate (13) is arranged on the side of the sealing cover (5), a limiting screw (14) is arranged on the side of the fixing plate (13), a limiting nut (15) is screwed on the surface of the limiting screw (14), and the fixing plate (13) can be inserted into the positioning hole (11).

4. The flame retardant protective structure of a new energy vehicle battery pack according to claim 1, characterized in that: The bottom of the sealing cover (5) is provided with a card plate (16), which can be inserted into the limiting groove (12). The bottom of the sealing cover (5) is also provided with an aerogel flame retardant sheet (2). The bottom of the sealing cover (5) is provided with a through hole (17), and the thin plate (10) is fixedly connected to the side of the through hole (17).

5. The flame retardant protective structure of a new energy vehicle battery pack according to claim 4, characterized in that: The end surface of the through hole (17) is provided with a guide plate (18), which is fixed in the through hole (17) at a certain angle. The through holes (17) are provided with a plurality of groups, and the plurality of groups of through holes (17) are linearly arranged with respect to the bottom of the sealing cover (5).

6. The flame retardant protective structure of a new energy vehicle battery pack according to claim 1, characterized in that: One end of the spring (7) is fixedly connected to the bottom surface of the sealing cover (5), and the other end of the spring (7) is fixedly connected to the surface of the elastic plate (8), and the limiting frame (6) is filled with flame retardant powder.

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