Battery pack with fire extinguishing structure and new energy vehicle

Abstract

The application relates to the technical field of new energy vehicles, and provides a battery pack with a fire extinguishing structure and a new energy vehicle. The battery pack comprises a battery pack lower cover and a battery pack upper cover, a plurality of rectangular holes are arranged on the battery pack upper cover, an aerosol fire extinguishing assembly is arranged in the rectangular holes, the aerosol fire extinguishing assembly comprises an aerosol fire extinguisher, the aerosol fire extinguisher is in plug-in fit with the rectangular holes, a top limiting plate is fixedly installed on the top of the aerosol fire extinguisher, the top limiting plate abuts against the top surface of the battery pack upper cover, a limiting and pressing assembly is arranged on the battery pack upper cover, the limiting and pressing assembly comprises a pressing plate which is pressed on the top limiting plate, the limiting and pressing assembly further comprises a supporting seat which is fixedly installed on the end housing of the battery pack upper cover, the end plate body of the pressing plate is rotationally connected with the supporting seat, and the other end plate body of the pressing plate is fixedly connected with the battery pack upper cover through a fastening screw. The battery pack has the fire extinguishing structure, is convenient to install, and is beneficial to guarantee the use safety.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of new energy vehicles, and in particular relates to a battery pack with a fire extinguishing structure and a new energy vehicle. BACKGROUND

[0002] A lithium battery pack structure is generally composed of a positive electrode, a negative electrode, an electrolyte, a separator and a battery shell, and the lithium battery pack is generally composed of a plurality of battery groups and a battery management system, and the shell material of the lithium battery pack has two types, namely an aluminum shell and a steel shell, and the difference between the soft package and the hard package, since new energy vehicles generally use electric power driving, a plurality of battery packs are generally installed on the new energy vehicles, and in addition, the performance requirements of the battery pack are relatively strict since the new energy vehicles are often used outdoors.

[0003] An invention patent with the authorized announcement number CN114361644A discloses a new energy vehicle battery pack and a new energy vehicle, the battery pack includes a base, the base is provided with an upper cover, the upper cover is provided with a convex part protruding outward, a cooling space is formed between the convex part and the top surface of the base, a confluence area, a first flow channel and a second flow channel are arranged in the cooling space, the shapes of the first flow channel and the second flow channel are both spiral, the spiral directions of the first flow channel and the second flow channel are opposite, the side wall of the convex part is provided with a first water outlet and a second water outlet, the two ends of the first flow channel are respectively communicated with the first water outlet and the confluence area, and the two ends of the second flow channel are respectively communicated with the second water outlet and the confluence area. The present application realizes uniform temperature while rapidly cooling, and avoids the damage of materials caused by the excessive temperature difference between the upper cover and other parts.

[0004] An invention patent with the authorized announcement number CN113745723B discloses a new energy vehicle battery box, which comprises a box body, and an installation assembly is arranged in the box body; the installation assembly comprises connecting blocks, a placing box, mounting blocks, an installation block, an installation rod, a fixing block and a connecting spring, two groups of connecting blocks are fixedly connected to the two sides of the box body, the placing box is slidably connected to the inside of the box body, the mounting block is fixedly connected to the top end of one side of the placing box, the installation block is fixedly connected to the top end of one side of the box body, and the installation rod is slidably connected to the inside of the installation block; the installation assembly is arranged, so that the battery can be quickly taken out and repaired, the operation is simple, the staff can use the new energy vehicle battery box conveniently, the heat dissipation assembly is arranged, so that heat dissipation is facilitated, the temperature is prevented from being too high to affect use, the shielding assembly is arranged, so that the shielding effect is achieved and external dust is prevented from entering, and the damping assembly is arranged, so that the buffering and damping effect of the new energy vehicle battery box is increased, and the battery is protected.

[0005] Although the above technical solutions have corresponding advantages, the battery pack on the market is generally directly installed on a new energy vehicle during use, but such a battery pack lacks a fire extinguishing structure and cannot perform fire extinguishing operations when a fire occurs. With high-temperature weather and long-time operation of the vehicle, the temperature of the battery part will increase. The lack of a fire extinguishing structure will cause safety hazards and endanger human life and property safety after a fire occurs. SUMMARY

[0006] Therefore, the embodiments of the present application provide a battery pack with a fire extinguishing structure and a new energy vehicle to solve the problems mentioned in the background art.

[0007] In a first aspect of the embodiments of the present application, the present application provides a battery pack with a fire extinguishing structure, comprising a battery pack lower cover installed on a new energy vehicle and a battery pack upper cover fixedly installed on the top surface of the battery pack lower cover. A plurality of rectangular holes arranged linearly and equidistantly are arranged on the battery pack upper cover. An aerosol fire extinguishing assembly is arranged in the rectangular hole. The aerosol fire extinguishing assembly comprises an aerosol fire extinguisher. The aerosol fire extinguisher is inserted and connected with the rectangular hole. An upper limiting plate is fixedly installed on the top of the aerosol fire extinguisher. The upper limiting plate abuts against the top surface of the battery pack upper cover. A limiting and pressing assembly for limiting the aerosol fire extinguisher is arranged on the battery pack upper cover. The limiting and pressing assembly comprises a pressing plate pressed on the upper limiting plate.

[0008] As a preferred technical solution of the present application, a rectangular groove is arranged on the upper limiting plate. The pressing plate is clamped in the rectangular groove for pressing operation. The size of the pressing plate is matched with the size of the rectangular groove. The thickness of the pressing plate is between 0.2 cm and 0.5 cm. The width of the rectangular groove is between one-third and one-half of the width of the upper limiting plate.

[0009] As a preferred technical solution of the present application, a plurality of direction indicating arrows arranged linearly and equidistantly are arranged on the upper surface of the battery pack upper cover. The direction indicating arrows are used to indicate the installation direction of the aerosol fire extinguisher. The color of the direction indicating arrows is marked as one of red, yellow and orange.

[0010] As a preferred technical solution of the present application, a plurality of groups of support convex rings arranged linearly and equidistantly are fixedly installed on the upper surface of the battery pack upper cover. The rectangular holes are located between a plurality of support convex rings in each group. The upper limiting plate is pressed on the support convex ring. The number of support convex rings in each group is four. The height of the support convex ring is between 1 cm and 1.5 cm. After the upper limiting plate abuts against the support convex ring, an air flow gap is formed between the upper limiting plate and the battery pack upper cover, which facilitates stable support operation of the upper limiting plate.

[0011] As a preferred technical solution of the present application, the supporting convex ring is matched with a rubber pad through clamping, the rubber pad abuts against the bottom surface of the upper limiting plate, and is used for buffering protection, the rubber pad is made of one of rubber and silica gel material, the thickness of the rubber pad is between 0.3 and 0.5 cm, and the rubber pad is a hollow structure.

[0012] As a preferred technical solution of the present application, the rectangular groove is matched with a compression pad through clamping, the compression plate abuts against the compression pad, the thickness of the compression pad is between 0.2 and 0.6 cm, and the compression pad is a solid structure, so that the friction force is increased by using the compression pad, and the slipping condition is not prone to occur.

[0013] As a preferred technical solution of the present application, the limiting and compressing assembly further includes a supporting seat fixedly installed on the upper cover end shell of the battery pack, the end plate body of the compression plate is rotationally connected with the supporting seat through a rotating shaft, and the other end plate body of the compression plate is fixedly connected with the upper cover of the battery pack through a fastening screw, so as to be used for limiting and fixing operation, and facilitate fixing and opening operation of the compression plate.

[0014] As a preferred technical solution of the present application, the supporting seat is fixedly installed with a fixed plate, and the fixed plate is fixedly installed on the upper cover of the battery pack through a plurality of fastening screws, so as to facilitate fixing of the fixed plate and achieve the effect of fixing of the supporting seat.

[0015] As a preferred technical solution of the present application, the distance between the aerosol fire extinguisher and the hole wall of the rectangular hole is between 1 and 2 cm, and is used for ventilation and heat dissipation operation.

[0016] In a second aspect, the present application provides a new energy automobile, which comprises the battery pack with the fire extinguishing structure and a connecting assembly for connecting the battery pack with the fire extinguishing structure.

[0017] Compared with the prior art, the present application has the following beneficial effects:

[0018] 1. The aerosol fire extinguishing assembly is arranged, so that the aerosol fire extinguisher can timely perform fire extinguishing operation when encountering an open flame, the use safety of the battery pack is ensured, the effect of self-provided fire extinguishing structure capable of performing fire extinguishing operation is achieved, and the use safety is improved.

[0019] 2. The aerosol fire extinguisher is inserted and matched with the rectangular hole, and the limiting and compressing assembly is arranged to simultaneously fix a plurality of aerosol fire extinguishers, so that the aerosol fire extinguisher can be conveniently installed and disassembled and overhauled outside the battery pack, and the aerosol fire extinguisher can be simultaneously fixed or disassembled and opened, so that the operation is more simple and convenient to use. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of a battery pack with a fire extinguishing structure provided in an embodiment of this application;

[0022] Figure 2 This is a schematic diagram of the exploded structure of a battery pack with a fire extinguishing structure provided in an embodiment of this application;

[0023] Figure 3 This is provided by the embodiments of this application. Figure 2 Enlarged view of point A in the middle;

[0024] Figure 4 This is a schematic diagram of a limiting and clamping component provided in an embodiment of this application.

[0025] The following are the labeling elements in the figure:

[0026] 1. Battery pack bottom cover; 10. Battery pack top cover; 11. Rectangular hole; 12. Directional indicator arrow; 13. Support protrusion ring; 131. Rubber pad; 2. Aerosol fire extinguishing assembly; 20. Aerosol fire extinguisher; 21. Upper limit plate; 211. Rectangular groove; 22. Pressure pad; 3. Limiting and pressing assembly; 30. Support base; 31. Fixing plate; 32. Pressure plate; 33. Fastening screw. Detailed Implementation

[0027] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0028] Example 1

[0029] Please see Figures 1-4As shown, the present embodiment provides a battery pack with fire extinguishing structure, which comprises a battery pack lower cover 1 installed on a new energy vehicle and a battery pack upper cover 10 fixedly installed on the top surface of the battery pack lower cover 1, a plurality of rectangular holes 11 arranged linearly and equidistantly are arranged on the battery pack upper cover 10, an aerosol fire extinguishing assembly 2 is arranged in the rectangular hole 11, the aerosol fire extinguishing assembly 2 comprises an aerosol fire extinguisher 20, the aerosol fire extinguisher 20 is inserted and matched with the rectangular hole 11, which facilitates the installation and disassembly operation of the aerosol fire extinguisher 20.

[0030] Further, the top of the aerosol fire extinguisher 20 is fixedly installed with an upper limiting plate 21, the upper limiting plate 21 abuts against the top surface of the battery pack upper cover 10, the battery pack upper cover 10 is provided with a limiting and pressing assembly 3 for limiting the aerosol fire extinguisher 20, the limiting and pressing assembly 3 comprises a pressing plate 32 pressed on the upper limiting plate 21, which facilitates the fixation of the upper limiting plate 21 and achieves the effect of fixing the aerosol fire extinguisher 20.

[0031] Further, the upper limiting plate 21 is provided with a rectangular groove 211, the pressing plate 32 is clamped in the rectangular groove 211 for pressing operation, the size of the pressing plate 32 is matched with the size of the rectangular groove 211; the thickness of the pressing plate 32 is between 0.2cm and 0.5cm, and the width of the rectangular groove 211 is between one third and one half of the width of the upper limiting plate 21, so that the pressing plate 32 can stably press the upper limiting plate 21.

[0032] Further, the rectangular groove 211 is clamped and matched with a pressing pad 22, the pressing plate 32 abuts against the pressing pad 22, which facilitates the use of the pressing pad 22 to increase the friction and makes it not easy to slip; the thickness of the pressing pad 22 is between 0.2cm and 0.6cm, and the pressing pad 22 is of solid structure, which can ensure that it is not easy to break after being pressed and achieve the effect of prolonging the service life.

[0033] Further, a plurality of direction indicating arrows 12 arranged equidistantly are arranged on the upper surface of the battery pack upper cover 10, the direction indicating arrows 12 are used to indicate the installation direction of the aerosol fire extinguisher 20, which facilitates correct installation operation; the color of the direction indicating arrows 12 is one of red, yellow and orange, and as a preferred technical solution of the present application, the color is red, which is more eye-catching and can be observed by the staff in time, in addition, the direction indicating arrows 12 are prepared by etching corresponding grooves on the battery pack upper cover 10 and then applying pigments in the etched grooves, and the preparation operation is completed after the pigments are dried, which makes the direction indicating arrows 12 not easy to wear.

[0034] Further, a plurality of support convex rings 13 are fixedly installed on the upper surface of the battery pack upper cover 10 in linear equidistant arrangement, the rectangular holes 11 are located between the plurality of support convex rings 13 in each group, and the upper limiting plate 21 is pressed on the support convex ring 13, so as to facilitate the stable support operation of the support convex ring 13 on the upper limiting plate 21; the number of support convex rings 13 in each group is four, the height of the support convex ring 13 is between 1-1.5 cm, and after the upper limiting plate 21 is abutted on the support convex ring 13, the upper limiting plate 21 is elevated, the ventilation area is increased, the air flow gap is formed between the upper limiting plate 21 and the battery pack upper cover 10, heat loss is facilitated, and a certain heat dissipation effect is achieved.

[0035] Further, the rubber pad 131 is clamped and matched in the support convex ring 13, the rubber pad 131 is abutted on the bottom surface of the upper limiting plate 21, and is used for buffering protection; the rubber pad 131 is made of one of rubber and silica gel materials, the thickness of the rubber pad 131 is between 0.3-0.5 cm, the rubber pad 131 is a hollow structure, the hollow structure of the rubber pad 131 has a buffering trend after being stressed, and can achieve a certain buffering protection effect.

[0036] Embodiment 2

[0037] Please refer to Figures 1-4 As shown in the figure, the embodiment provides a battery pack with a fire extinguishing structure, which comprises a battery pack lower cover 1 installed on a new energy vehicle and a battery pack upper cover 10 fixedly installed on the top surface of the battery pack lower cover 1, a plurality of rectangular holes 11 arranged in linear equidistant arrangement are arranged on the battery pack upper cover 10, an aerosol fire extinguishing assembly 2 is arranged in the rectangular hole 11, the aerosol fire extinguishing assembly 2 comprises an aerosol fire extinguisher 20, the aerosol fire extinguisher 20 is inserted and matched with the rectangular hole 11, and the aerosol fire extinguisher 20 is convenient to install and disassemble;

[0038] Further, the top of the aerosol fire extinguisher 20 is fixedly installed with an upper limiting plate 21, the upper limiting plate 21 is abutted on the top surface of the battery pack upper cover 10, the battery pack upper cover 10 is provided with a limiting and pressing assembly 3 for limiting the aerosol fire extinguisher 20, the limiting and pressing assembly 3 comprises a pressing plate 32 pressed on the upper limiting plate 21, the upper limiting plate 21 is fixed, and the aerosol fire extinguisher 20 is fixed.

[0039] Further, the upper limiting plate 21 is provided with a rectangular groove 211, the pressing plate 32 is clamped in the rectangular groove 211 for pressing operation, and the size of the pressing plate 32 is matched with the size of the rectangular groove 211; the thickness of the pressing plate 32 is between 0.2-0.5 cm, the width of the rectangular groove 211 is between one-third and one-half of the width of the upper limiting plate 21, so that the pressing plate 32 can stably press the upper limiting plate 21.

[0040] Further, the rectangular groove 211 is clamped and matched with a compression pad 22, and the compression plate 32 is abutted on the compression pad 22, so that the compression pad 22 is used to increase the friction, and the slipping is not prone to occur; the thickness of the compression pad 22 is between 0.2-0.6 cm, and the compression pad 22 is a solid structure, which can ensure that the compression pad 22 is not prone to breakage after being compressed, and the service life is prolonged.

[0041] Further, a plurality of direction indicating arrows 12 are arranged at equal intervals on the upper surface of the battery pack upper cover 10, and the direction indicating arrows 12 are used to indicate the installation direction of the aerosol fire extinguisher 20, so that the correct installation operation is facilitated; the color of the direction indicating arrow 12 is one of red, yellow and orange, and as a preferred technical solution of the present application, the color is red, which is more conspicuous and can be observed by the staff in time, in addition, the direction indicating arrow 12 is etched with corresponding grooves on the battery pack upper cover 10, and then the pigment is applied in the etched grooves, and after the pigment is dried, the preparation operation is completed, and the direction indicating arrow 12 prepared by this operation is not prone to wear.

[0042] Further, a plurality of groups of support convex rings 13 are fixedly installed on the upper surface of the battery pack upper cover 10 in linear and equal intervals, and the rectangular hole 11 is located between the plurality of support convex rings 13 in each group, and the upper limiting plate 21 is abutted on the support convex ring 13, so that the support convex ring 13 is used to stably support the upper limiting plate 21; the number of the support convex rings 13 in each group is four, the height of the support convex ring 13 is between 1-1.5 cm, and after the upper limiting plate 21 is abutted on the support convex ring 13, the upper limiting plate 21 is elevated, the ventilation area is increased, the air flow gap is formed between the upper limiting plate 21 and the battery pack upper cover 10, which is beneficial to heat dissipation, and a certain heat dissipation effect is achieved.

[0043] Further, the support convex ring 13 is clamped and matched with a rubber pad 131, and the rubber pad 131 is abutted on the bottom surface of the upper limiting plate 21 for buffering protection; the rubber pad 131 is made of one of rubber and silica gel, the thickness of the rubber pad 131 is between 0.3-0.5 cm, and the rubber pad 131 is a hollow structure, which has a buffering trend after being stressed, and can achieve a certain buffering protection effect.

[0044] In this embodiment, the limiting and pressing assembly 3 further comprises a support seat 30 fixedly installed on the end shell of the battery pack upper cover 10, the end plate body of the pressing plate 32 is rotationally connected with the support seat 30, and the other end plate body of the pressing plate 32 is fixedly connected with the battery pack upper cover 10 through a fastening screw 33, so as to facilitate the fixing and opening operation of the pressing plate 32. After the pressing plate 32 is opened, the aerosol fire extinguisher 20 can be taken out for maintenance and replacement operation, which is used for limiting and fixing operation. In addition, one pressing plate 32 is used to realize the fixing operation of multiple aerosol fire extinguishers 20 at the same time, so that the installation and fixing operation and the dismounting and taking down operation are more simple, time-saving and convenient to use.

[0045] Further, the support seat 30 is fixedly installed with a fixed plate 31, and the fixed plate 31 is fixedly installed on the battery pack upper cover 10 through multiple fastening screws, so as to facilitate the fixing of the fixed plate 31 and achieve the effect of fixing the support seat 30.

[0046] Embodiment 3

[0047] Please refer to Figures 1-4 As shown in the figure, the embodiment provides a battery pack with a fire extinguishing structure, which comprises a battery pack lower cover 1 installed on a new energy vehicle and a battery pack upper cover 10 fixedly installed on the top surface of the battery pack lower cover 1. The battery pack upper cover 10 is provided with multiple rectangular holes 11 arranged in a linear and equidistant manner. An aerosol fire extinguishing assembly 2 is arranged in the rectangular hole 11. The aerosol fire extinguishing assembly 2 comprises an aerosol fire extinguisher 20. The aerosol fire extinguisher 20 is inserted and matched with the rectangular hole 11, so as to facilitate the installation and dismounting operation of the aerosol fire extinguisher 20.

[0048] Further, the top of the aerosol fire extinguisher 20 is fixedly installed with an upper limiting plate 21, and the upper limiting plate 21 abuts against the top surface of the battery pack upper cover 10. The battery pack upper cover 10 is provided with a limiting and pressing assembly 3 for limiting the aerosol fire extinguisher 20. The limiting and pressing assembly 3 comprises a pressing plate 32 which is pressed on the upper limiting plate 21, so as to facilitate the fixing of the upper limiting plate 21 and achieve the effect of fixing the aerosol fire extinguisher 20.

[0049] Further, the upper limiting plate 21 is provided with a rectangular groove 211, and the pressing plate 32 is clamped in the rectangular groove 211 for pressing operation. The size of the pressing plate 32 is matched with the size of the rectangular groove 211. The thickness of the pressing plate 32 is between 0.2 cm and 0.5 cm, and the width of the rectangular groove 211 is between one third and one half of the width of the upper limiting plate 21, so that the pressing plate 32 can stably press the upper limiting plate 21.

[0050] Further, the rectangular groove 211 is clamped and matched with a compression pad 22, and the compression plate 32 is abutted on the compression pad 22, so that the compression pad 22 is used to increase the friction, and the slipping is not prone to occur; the thickness of the compression pad 22 is between 0.2-0.6 cm, and the compression pad 22 is a solid structure, which can ensure that the compression pad 22 is not prone to breakage after being compressed, and the service life is prolonged.

[0051] Further, a plurality of direction indicating arrows 12 are arranged at equal intervals on the upper surface of the battery pack upper cover 10, and the direction indicating arrows 12 are used to indicate the installation direction of the aerosol fire extinguisher 20, so that the correct installation operation is facilitated; the color of the direction indicating arrow 12 is one of red, yellow and orange, and as a preferred technical solution of the present application, the color is red, which is more conspicuous and can be observed by the staff in time, in addition, the direction indicating arrow 12 is etched with corresponding grooves on the battery pack upper cover 10, and then the pigment is applied in the etched grooves, and after the pigment is dried, the preparation operation is completed, and the direction indicating arrow 12 prepared by this operation is not prone to wear.

[0052] Further, a plurality of groups of support convex rings 13 are fixedly installed on the upper surface of the battery pack upper cover 10, and the rectangular holes 11 are located between the plurality of support convex rings 13 in each group, and the upper limiting plate 21 is abutted on the support convex ring 13, so that the support convex ring 13 is used to stably support the upper limiting plate 21; the number of support convex rings 13 in each group is four, the height of the support convex ring 13 is between 1-1.5 cm, and after the upper limiting plate 21 is abutted on the support convex ring 13, the upper limiting plate 21 is elevated, the ventilation area is increased, the air flow gap is formed between the upper limiting plate 21 and the battery pack upper cover 10, which is beneficial to heat dissipation, and a certain heat dissipation effect is achieved.

[0053] Further, the support convex ring 13 is clamped and matched with a rubber pad 131, and the rubber pad 131 is abutted on the bottom surface of the upper limiting plate 21 for buffering protection; the rubber pad 131 is made of one of rubber and silica gel, the thickness of the rubber pad 131 is between 0.3-0.5 cm, and the rubber pad 131 is a hollow structure, which has a buffering trend after being stressed, and can achieve a certain buffering protection effect.

[0054] Further, the limiting and pressing assembly 3 further comprises a support seat 30 fixedly installed on the end housing of the battery pack upper cover 10, the end plate body of the pressing plate 32 is rotationally connected with the support seat 30 through a rotating shaft, and the other end plate body of the pressing plate 32 is fixedly connected with the battery pack upper cover 10 through a fastening screw 33, so as to facilitate the fixing and opening operation of the pressing plate 32. After the pressing plate 32 is opened, the aerosol fire extinguisher 20 can be taken out for maintenance and replacement operation, and is used for limiting and fixing operation. In addition, one pressing plate 32 is used to realize the fixing operation of multiple aerosol fire extinguishers 20 at the same time, so that the installation and fixing operation and the dismounting and taking down operation are more simple, time-saving and convenient to use.

[0055] Further, the support seat 30 is fixedly installed with a fixed plate 31, and the fixed plate 31 is fixedly installed on the battery pack upper cover 10 through multiple fastening screws, so as to facilitate the fixing of the fixed plate 31 and achieve the effect of fixing the support seat 30.

[0056] In the embodiment, the distance between the aerosol fire extinguisher 20 and the hole wall of the rectangular hole 11 is between 1 to 2 cm, which is used for ventilation and heat dissipation operation.

[0057] Embodiment 4

[0058] Please refer to Figures 1-4 As shown in the figure, the embodiment provides a battery pack with fire extinguishing structure, which comprises a battery pack lower cover 1 installed on a new energy vehicle and a battery pack upper cover 10 fixedly installed on the top surface of the battery pack lower cover 1. The battery pack upper cover 10 is provided with multiple rectangular holes 11 arranged in a linear and equidistant manner. The aerosol fire extinguishing assembly 2 is arranged in the rectangular hole 11. The aerosol fire extinguishing assembly 2 comprises an aerosol fire extinguisher 20. The aerosol fire extinguisher 20 is inserted and matched with the rectangular hole 11, so as to facilitate the installation and dismounting operation of the aerosol fire extinguisher 20.

[0059] Further, the top of the aerosol fire extinguisher 20 is fixedly installed with an upper limiting plate 21, and the upper limiting plate 21 abuts against the top surface of the battery pack upper cover 10. The battery pack upper cover 10 is provided with a limiting and pressing assembly 3 for limiting the aerosol fire extinguisher 20. The limiting and pressing assembly 3 comprises a pressing plate 32 which is pressed on the upper limiting plate 21, so as to facilitate the fixing of the upper limiting plate 21 and achieve the effect of fixing the aerosol fire extinguisher 20.

[0060] Further, the upper limiting plate 21 is provided with a rectangular groove 211, and the pressing plate 32 is clamped in the rectangular groove 211 for pressing operation. The size of the pressing plate 32 is matched with the size of the rectangular groove 211. The thickness of the pressing plate 32 is between 0.2 cm and 0.5 cm, and the width of the rectangular groove 211 is between one third and one half of the width of the upper limiting plate 21, so that the pressing plate 32 can stably press the upper limiting plate 21.

[0061] Further, the rectangular groove 211 is clamped and matched with a compression pad 22, and the compression plate 32 is abutted on the compression pad 22, so that the compression pad 22 is used to increase the friction, and the slippage is not prone to occur; the thickness of the compression pad 22 is between 0.2 and 0.6 cm, and the compression pad 22 is a solid structure, which can ensure that the compression pad 22 is not prone to breakage after being compressed, and the service life is prolonged.

[0062] Further, a plurality of direction indicating arrows 12 are arranged at equal intervals on the upper surface of the battery pack upper cover 10, and the direction indicating arrows 12 are used to indicate the installation direction of the aerosol fire extinguisher 20, so that the correct installation operation is facilitated; the color of the direction indicating arrow 12 is one of red, yellow and orange, and as a preferred technical solution of the present application, the color is red, which is more eye-catching and can be observed by the staff in time, in addition, the direction indicating arrow 12 is etched with corresponding grooves on the battery pack upper cover 10, and then the pigment is applied in the etched grooves, and after the pigment is dried, the preparation operation is completed, and the direction indicating arrow 12 prepared by this operation is not prone to wear.

[0063] Further, a plurality of groups of support convex rings 13 arranged linearly at equal intervals are fixedly installed on the upper surface of the battery pack upper cover 10, and the rectangular hole 11 is located between the plurality of support convex rings 13 in each group, and the upper limiting plate 21 is abutted on the support convex ring 13, so that the support convex ring 13 is used to stably support the upper limiting plate 21; the number of support convex rings 13 in each group is four, the height of the support convex ring 13 is between 1 and 1.5 cm, and after the upper limiting plate 21 is abutted on the support convex ring 13, the upper limiting plate 21 is elevated, the ventilation area is increased, the air flow gap is formed between the upper limiting plate 21 and the battery pack upper cover 10, which is beneficial to heat dissipation, and a certain heat dissipation effect is achieved.

[0064] Further, the support convex ring 13 is clamped and matched with a rubber pad 131, and the rubber pad 131 is abutted on the bottom surface of the upper limiting plate 21 for buffering protection; the rubber pad 131 is made of one of rubber and silica gel, the thickness of the rubber pad 131 is between 0.3 and 0.5 cm, and the rubber pad 131 is a hollow structure, which has a buffering trend after being stressed, and can achieve a certain buffering protection effect.

[0065] Further, the limiting and pressing assembly 3 further comprises a support seat 30 fixedly installed on the end housing of the battery pack upper cover 10, the end plate body of the pressing plate 32 is rotationally connected with the support seat 30, and the other end plate body of the pressing plate 32 is fixedly connected with the battery pack upper cover 10 through a fastening screw 33, so that the pressing plate 32 is fixed and opened, and after the pressing plate 32 is opened, the aerosol fire extinguisher 20 can be taken out for maintenance and replacement operation, and is used for limiting and fixing operation, and one pressing plate 32 is used to simultaneously fix a plurality of aerosol fire extinguishers 20, so that the installation and fixing operation and the dismounting and taking down operation are more simple, time-saving and convenient to use.

[0066] Further, the support seat 30 is fixedly installed with a fixed plate 31, and the fixed plate 31 is fixedly installed on the battery pack upper cover 10 through a plurality of fastening screws, so that the fixed plate 31 is fixed, and the support seat 30 is fixed.

[0067] Further, the distance between the aerosol fire extinguisher 20 and the hole wall of the rectangular hole 11 is 1-2 cm, which is used for ventilation and heat dissipation operation.

[0068] In the embodiment, the aerosol fire extinguisher 20 is also called an aerosol fire extinguishing device, and can be divided into hot aerosol and cold aerosol according to the way of generating aerosol; the hot aerosol extinguishes fire according to the principle of negative catalysis and destruction of combustion reaction chain; the hot aerosol belongs to a full flooding system, and gradually fully floods in the case of controlling the fire source, so that the personnel have enough time to evacuate and escape, and is suitable for unattended, relatively closed and small space places such as power distribution rooms, generator rooms, cable interlayers, cable wells and cable trenches, and is suitable for extinguishing Class C flammable liquid fires such as diesel oil, heavy oil and lubricating oil and surface fires of flammable solid materials; the aerosol fire extinguisher 20 is a conventional technology at present, and will not be described here.

[0069] The embodiment also provides a new energy automobile comprising the battery pack with the fire extinguishing structure and a connecting assembly used for connecting the battery pack with the fire extinguishing structure.

[0070] In use, the aerosol fire extinguisher 20 is inserted into the rectangular hole 11, the bottom surface of the upper limiting plate 21 is abutted against the support convex ring 13, the pressing plate 32 is closed, the pressing plate 32 is clamped into the rectangular groove 211, the end of the pressing plate 32 is fixedly installed on the battery pack upper cover 10 through the fastening screw 33, and the fixing operation is completed; then, the battery pack with the fire extinguishing structure is installed on the new energy automobile through the matched connecting assembly, and can be normally used.

[0071] The above examples are only used to illustrate the technical solutions of the present application, but not limit the same; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced by equivalent ones; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A battery pack with fire extinguishing structure, comprising a battery pack lower cover (1) mounted on a new energy vehicle and a battery pack upper cover (10) fixedly mounted on the top surface of the battery pack lower cover (1), characterized in that: The battery pack upper cover (10) is provided with a plurality of linear equidistantly arranged rectangular holes (11), the aerosol fire extinguishing assembly (2) is arranged in the rectangular hole (11), the aerosol fire extinguishing assembly (2) comprises an aerosol fire extinguisher (20), the aerosol fire extinguisher (20) is inserted and matched with the rectangular hole (11), the top of the aerosol fire extinguisher (20) is fixedly installed with an upper limiting plate (21), the upper limiting plate (21) abuts against the top surface of the battery pack upper cover (10), the battery pack upper cover (10) is provided with a limiting and pressing assembly (3) for limiting the aerosol fire extinguisher (20), the limiting and pressing assembly (3) comprises a pressing plate (32) pressed on the upper limiting plate (21) and a support seat (30) fixedly installed on the end housing of the battery pack upper cover (10), the upper limiting plate (21) is provided with a rectangular groove (211), the pressing plate (32) is clamped in the rectangular groove (211) for pressing operation, the size of the pressing plate (32) is matched with the size of the rectangular groove (211), the end plate body of the pressing plate (32) is rotatably connected with the support seat (30), the other end plate body of the pressing plate (32) is fixedly connected with the battery pack upper cover (10) through a fastening screw (33) for limiting and fixing operation; A plurality of groups of linear equidistantly arranged support convex rings (13) are fixedly installed on the upper surface of the battery pack upper cover (10), the rectangular holes (11) are located between a plurality of the support convex rings (13) in each group, the upper limiting plate (21) is pressed on the support convex ring (13), after the upper limiting plate (21) abuts against the support convex ring (13), an air flow gap is formed between the upper limiting plate (21) and the battery pack upper cover (10).

2. The battery pack with fire extinguishing structure according to claim 1, characterized in that: The thickness of the pressing plate (32) is between 0.2cm and 0.5cm, and the width of the rectangular groove (211) is between one third and one half of the width of the upper limiting plate (21).

3. The battery pack with fire extinguishing structure according to claim 1, characterized in that: A plurality of equidistantly arranged direction indicating arrows (12) are arranged on the upper surface of the battery pack upper cover (10), the direction indicating arrows (12) are used for indicating the installation direction of the aerosol fire extinguisher (20), and the color mark of the direction indicating arrow (12) is one of red, yellow and orange.

4. The battery pack with fire extinguishing structure according to claim 1, characterized in that: The number of the support convex rings (13) in each group is four, and the height of the support convex ring (13) is between 1cm and 1.5cm.

5. The battery pack with fire extinguishing structure according to claim 4, characterized in that: The support convex ring (13) is clamped and matched with a rubber pad (131), the rubber pad (131) abuts against the bottom surface of the upper limiting plate (21) for buffering protection, the rubber pad (131) is made of one of rubber and silica gel material, the thickness of the rubber pad (131) is between 0.3cm and 0.5cm, and the rubber pad (131) is a hollow structure.

6. The battery pack with fire extinguishing structure according to claim 2, characterized in that: The rectangular slot (211) is clamped with a compression pad (22), the compression plate (32) is pressed on the compression pad (22), the thickness of the compression pad (22) is between 0.2-0.6cm, and the compression pad (22) is a solid structure.

7. The battery pack with fire extinguishing structure according to claim 1, characterized in that: The support seat (30) is fixedly installed with a fixed plate (31), and the fixed plate (31) is fixedly installed on the battery pack upper cover (10) through a plurality of fastening screws.

8. The battery pack with fire extinguishing structure according to claim 1, characterized in that: The distance between the aerosol fire extinguisher (20) and the hole wall of the rectangular hole (11) is between 1-2cm, which is used for ventilation and heat dissipation operation.

9. A new energy vehicle, characterized in that: The application relates to a battery pack with a fire extinguishing structure and a connecting assembly for installing and connecting the battery pack with the fire extinguishing structure.

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