Layered isolation type explosion-proof new energy battery pack

Abstract

The invention belongs to the technical field of new energy batteries, and discloses a layered isolation type anti-explosion new energy battery pack which comprises a battery box, a fixing plate, bolts and a blocking plate, three groups of packing bins are formed in an inner cavity of the battery box, and battery packs are placed in the packing bins; and a heat exchange plate located on the surface of the battery pack is further fixedly installed on the inner wall of the packing bin, a circulation cavity is formed in the heat exchange plate, and a plurality of sets of supporting plates which are linearly distributed at equal intervals are fixedly connected to the inner wall of the circulation cavity. According to the battery pack, hot air moving upwards pushes the rotating plate to rotate upwards, the gap between the front side of the rotating plate and the back face of the supporting plate is gradually reduced, the flow speed of the hot air passing through the gap is increased, the air circulation efficiency is improved in the inner cavity of the second area, and the design not only achieves the automatic cooling function when an automobile is charged, but also improves the charging efficiency of the automobile. No extra electric energy is consumed, and the reliability of the battery pack is improved on the whole.

Description

Technical Field

[0001] The present invention belongs to the technical field of new energy batteries, and in particular relates to a layered isolation type explosion-proof new energy battery pack. Background Art

[0002] New energy battery packs are power supply equipment for new energy vehicles. They are generally composed of lithium elements, packaged in battery packs, and designed through layered isolation to form explosion-proof new energy battery packs with explosion-proof functions. New energy battery packs are large in size and weight. During use (power supply, charging), they will generate heat due to resistance and environmental influences, causing the battery to be in a higher temperature environment. Therefore, the new energy battery pack needs to be cooled or kept at a low temperature to protect the battery pack. In the prior art, for the cooling of layered isolation explosion-proof new energy battery packs, more efficient liquid cooling is generally used, and the coolant is driven to circulate through a liquid pump to take away the electricity. The heat generated by the battery is cooled by forced air cooling to dissipate the heat of the coolant, but the liquid pump requires additional electricity, which not only increases the energy burden of the new energy vehicle battery pack, but also increases the heat of the battery pack when supplying power. It is a loss-making choice, and the use of liquid cooling structure will become more complicated. Since the entire battery pack needs to be designed to be closed and explosion-proof, the impact airflow generated when the car is driving cannot act on the battery pack, which makes the battery pack almost completely dependent on liquid cooling for heat dissipation, and the reliability is reduced. Once the liquid cooling system fails or fails to work, the battery pack will heat up sharply, thereby generating a high temperature environment, which has a great impact on the battery. Summary of the invention

[0003] The purpose of the present invention is to provide a layered isolation type explosion-proof new energy battery pack to solve the problems raised in the above background technology.

[0004] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a layered isolation type explosion-proof new energy battery pack, comprising a battery box, a fixing plate, bolts and a blocking plate, the inner cavity of the battery box is provided with three groups of isolation chambers, a battery pack is placed inside the isolation chamber, a heat exchange plate located on the surface of the battery pack is also fixedly installed on the inner wall of the isolation chamber, a flow chamber is provided inside the heat exchange plate, a plurality of groups of support plates linearly and equidistantly distributed are fixedly connected to the inner wall of the flow chamber, a wind guide frame is fixedly connected to the bottom left opening of the battery pack, the flow chamber is distributed from bottom to top in order as zone 1, zone 2, zone 3 and zone 4, a plurality of groups of booster components located on the surface of the support plate are arranged inside the zone 2, and support grooves are provided on the front and rear sides of the inner wall of the zone 2 and the outer surface of the support plate;

[0005] The booster assembly includes a support column rotatably installed in the support groove, the outer surface of the support column is fixedly connected with a rotating plate, the surface of the support plate is fixedly connected with a limiting plate, the bottom of the rotating plate abuts against the limiting plate, the upper surface of the rotating plate is provided with a plurality of exhaust ports 1 on a side away from the support column, the lower surface of the rotating plate is provided with a plurality of air inlet ports 1 and a second air inlet port in sequence, the middle of the rotating plate is provided with a plurality of air storage cavities which are respectively connected with the exhaust port 1 and the air inlet ports 1 and the second air inlet port, the air storage cavity is perpendicular to the axis of the support column, the side surface of the rotating plate is provided with an exhaust port 2 which is connected with the air storage cavity, the bottom of the inner wall of the air storage cavity is fixedly connected with a guide strip and a limiting block on a side near the exhaust port 2, the inner wall of the guide strip is slidably connected with a sealing column, one end of the sealing column blocks the exhaust port 2 and is staggered with the exhaust port 1 at the same time, the heat exchange plate is welded to the lower, right and upper surfaces of the battery pack;

[0006] As a preferred solution of the present invention, the fixing plates are arranged in three groups and are respectively fixedly installed on the left sides of the three groups of isolation chambers, the bolt threads are installed on the right side of the battery box, and the sealing plates are press-fitted and installed on the right side of the battery box, and the forward direction of the battery box when the vehicle starts is to the left.

[0007] As a preferred solution of the present invention, the top of the heat exchange plate penetrates upward through the left side of the top of the battery box, the top of the battery box is fixedly connected to a guide plate, the cross-sectional shape of the guide plate is fan-shaped, and the left side of the top of the battery box is fixedly connected to a protective frame located directly above the guide plate.

[0008] As a preferred solution of the present invention, the surface of the support plate is fixedly connected with anti-backflow plates which are symmetrically distributed front to back, and the openings formed by the two groups of anti-backflow plates face rightward.

[0009] As a preferred solution of the present invention, a plug is fixedly connected to one end of the sealing column close to the second exhaust port, a clamping strip is fixedly connected to the bottom of the sealing column, the clamping strip is slidably clamped in the guide strip, and the plug is adapted to be inserted into the second exhaust port.

[0010] As a preferred solution of the present invention, the air inlet 1 is closest to the support column and is vertically connected to the air storage cavity. The air inlet 2 is arranged in two groups and is obliquely connected to the air storage cavity. The angle between the axis of the air inlet 2 and the horizontal plane is greater than 1°.

[0011] As a preferred solution of the present invention, the upper surface of the sealing column is in sealing contact with the inner wall of the air storage chamber, and one side of the clamping strip can be in contact with the guide strip.

[0012] As a preferred solution of the present invention, the boosting assembly is distributed between every two adjacent groups of support plates, and the length of the rotating plate is smaller than the spacing between the two groups of support plates.

[0013] The beneficial effects of the present invention are as follows:

[0014] 1. The battery pack has been redesigned to completely abandon the energy-consuming liquid cooling and instead combine passive cooling and air cooling to greatly improve the air circulation efficiency of the battery pack. By setting a heat exchange plate close to the battery pack, when the car carrying the battery pack is in a stationary state, the booster assembly located in the second area is used to speed up the air circulation efficiency in the circulation cavity. The booster assembly is arranged in the second area and is rotatably installed in the support groove through the support column. It includes a rotating plate and a sealing column. The rotating plate rotates back and forth under the support of the support groove and the support column, and forms a seal with the surface of the support plate. Angle, when the support plate and the heat exchange plate absorb heat from the battery pack, hot air will be formed in the narrow space between the groups of support plates in the inner cavity of zone 2, and the hot air will be driven upward through the "chimney effect". The upward moving hot air pushes the rotating plate to rotate upward, and gradually narrows the gap between the front side of the rotating plate and the back side of the support plate, so that the flow rate of hot air passing through the gap is increased, and the air circulation efficiency is increased in the inner cavity of zone 2. This design not only achieves the automatic cooling function when the car is charging, but also does not consume additional electricity, which improves the reliability of the battery pack as a whole.

[0015] 2. Then, by opening an exhaust port 1, an air inlet 1, an air storage chamber, an air inlet 2 and a sealing column on the surface of the rotating plate, the hot air passing through the gap between the rotating plate and the back of the support plate can be positively strengthened upward to prevent the air from flowing back or stopping flowing under the action of gravity. The hot air entering the air inlet 1 and the air inlet 2 can be made to flow out obliquely upward through the exhaust port 1 by opening the exhaust port 1 on the upper surface of the rotating plate and the air inlet 1 and the air inlet 2 on the lower surface of the rotating plate. Moreover, due to the reduction in the cross-sectional area of ​​the air storage chamber, the flow rate of the hot air passing through the air storage chamber increases. As the rotating plate rotates upward at a larger angle, the angle between the axis of the exhaust port 1 and the direction of the air moving vertically upward becomes smaller, and the vertical component of the hot air discharged along the exhaust port 1 becomes larger, thereby making the circulation speed of the hot air in the No. 2 area faster and faster.

[0016] 3. Finally, by providing a guide strip and a limit block on one side of the bottom of the inner wall of the air storage chamber close to the second exhaust port, and providing a sealing column between the guide strip and the inner wall of the air storage chamber, when the rotating plate rotates upward to above the supporting column, the sealing column uses its own gravity to move obliquely downward along the axis of the air storage chamber, and the moving direction is toward the axis of the supporting column. The sealing column is limited by the limit block. At this time, the plug leaves the second exhaust port as the sealing column moves, so that the first exhaust port is blocked by the upper surface of the sealing column. The sealing column is opened. At this time, the hot air in the air storage chamber can be discharged obliquely upward through the second exhaust port, effectively maintaining the boosting function of the rotating plate on the circulation of hot air. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front perspective schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a front cross-sectional schematic diagram of the overall structure of the present invention;

[0019] Figure 3 It is a schematic diagram of the internal cross-section of the battery box and the heat exchange plate of the present invention;

[0020] Figure 4 For the present invention Figure 3 A magnified schematic diagram of the structure at center A;

[0021] Figure 5 This is a schematic diagram of the internal side cutaway of the second zone of the present invention;

[0022] Figure 6 For the present invention Figure 5 A magnified schematic diagram of the structure at B in the middle;

[0023] Figure 7 This is a schematic cross-sectional view of the interior of Area 1 of the present invention from top view;

[0024] Figure 8 It is a side cutaway schematic diagram of the battery box and the fourth area of ​​the present invention;

[0025] Fig. 9 Schematic diagram of the separation of the heat exchange plate, air guide frame and supercharging assembly of the present invention

[0026] Fig.10 Schematic diagram of separation of the booster assembly of the present invention

[0027] Fig.11 It is a schematic diagram of the internal section of the booster assembly of the present invention.

[0028] In the figure: 1. battery box; 2. sealing compartment; 3. fixing plate; 4. bolts; 5. sealing plate; 6. protective frame; 7. heat exchange plate; 8. guide plate; 9. air guide frame; 10. circulation cavity; 11. battery pack; 12. support plate; 13. area one; 14. area two; 15. area three; 16. area four; 17. anti-backflow plate; 18. support groove; 19. support column; 20. rotating plate; 21. exhaust port one; 22. limit plate; 23. air inlet one; 24. air storage cavity; 25. air inlet two; 26. guide strip; 27. limit block; 28. exhaust port two; 29. ​​sealing column; 30. card strip; 31. plug. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] like Figures 1 to 11 As shown, an embodiment of the present invention provides a layered isolation type explosion-proof new energy battery pack, including a battery box 1, a fixing plate 3, a bolt 4 and a blocking plate 5, the inner cavity of the battery box 1 is provided with three groups of isolation chambers 2, a battery pack 11 is placed inside the isolation chamber 2, a heat exchange plate 7 located on the surface of the battery pack 11 is fixedly installed on the inner wall of the isolation chamber 2, a flow chamber 10 is provided inside the heat exchange plate 7, a plurality of groups of support plates 12 linearly and equidistantly distributed are fixedly connected to the inner wall of the flow chamber 10, a wind guide frame 9 is fixedly connected to the bottom left opening of the battery pack 11, the flow chamber 10 is distributed from bottom to top as area 13, area 2 14, area 3 15 and area 4 16, a plurality of groups of booster components located on the surface of the support plate 12 are arranged inside the area 2 14, and support grooves 18 are provided on the front and rear sides of the inner wall of the area 2 14 and the outer surface of the support plate 12;

[0031] The booster assembly includes a support column 19 rotatably installed in the support groove 18, a rotating plate 20 is fixedly connected to the outer surface of the support column 19, a limiting plate 22 is fixedly connected to the surface of the support plate 12, the bottom of the rotating plate 20 abuts against the limiting plate 22, a plurality of exhaust ports 1 21 are provided on the side of the upper surface of the rotating plate 20 away from the support column 19, a plurality of air inlet ports 1 23 and air inlet ports 25 are sequentially provided on the lower surface of the rotating plate 20, a plurality of air inlet ports 1 23 and air inlet ports 25 are provided in the middle of the rotating plate 20, and a plurality of air inlet ports 1 21 and 23 are provided, respectively. The air storage chamber 24 connected to the air inlet 25 is perpendicular to the axis of the support column 19. The side of the rotating plate 20 is provided with an air outlet 28 connected to the air storage chamber 24. A guide bar 26 and a limit block 27 are fixedly connected to one side of the bottom of the inner wall of the air storage chamber 24 near the air outlet 28. A sealing column 29 is slidably connected to the inner wall of the guide bar 26. One end of the sealing column 29 blocks the air outlet 28 and is staggered with the air outlet 1 21 at the same time. The heat exchange plate 7 is welded to the lower, right and upper surfaces of the battery pack 11.

[0032] The battery pack has been redesigned to completely abandon the energy-consuming liquid cooling and instead combine passive cooling and air cooling to greatly improve the air circulation efficiency of the battery pack. The heat exchange plate 7 is arranged close to the battery pack 11. When the car carrying the battery pack 11 is in a stationary state, the booster assembly located in the second area 14 is used to accelerate the air circulation efficiency in the circulation cavity 10. The booster assembly is arranged in the second area 14, which is rotatably installed in the support groove 18 through the support column 19, including a rotating plate 20 and a sealing column 29. The rotating plate 20 rotates back and forth under the support of the support groove 18 and the support column 19, and is in contact with the surface of the support plate 12. An angle is formed between them. When the support plate 12 and the heat exchange plate 7 absorb heat from the battery pack 11, hot air is formed in the narrow space between each group of support plates 12 in the inner cavity of zone 2 14, and the hot air is driven upward by the "chimney effect". The upward moving hot air pushes the rotating plate 20 to rotate upward, and gradually narrows the gap between the front side of the rotating plate 20 and the back side of the support plate 12, so that the flow rate of the hot air passing through the gap is increased, and the air circulation efficiency is increased in the inner cavity of zone 2 14. Such a design not only achieves the automatic cooling function when the car is charging, but also does not consume additional electricity, thereby improving the reliability of the battery pack as a whole.

[0033] Then, by opening an exhaust port 21, an air inlet 23, an air storage chamber 24, an air inlet 25 and a sealing column 29 on the surface of the rotating plate 20, the hot air passing through the gap between the rotating plate 20 and the back of the support plate 12 is positively strengthened upward to prevent the air from flowing back or stopping flowing under the action of gravity. Through the exhaust port 21 opened on the upper surface of the rotating plate 20 and the air inlet 23 and the air inlet 25 opened on the lower surface of the rotating plate 20, the hot air entering the air inlet 23 and the air inlet 25 flows out obliquely upward through the exhaust port 21, and since the cross-sectional area of ​​the air storage chamber 24 is reduced, the flow rate of the hot air passing through the air storage chamber 24 is increased. As the angle of the rotating plate 20 rotates upward, the angle between the axis of the exhaust port 21 and the direction of the air moving vertically upward is smaller, and the vertical component of the hot air discharged along the exhaust port 21 is larger, thereby making the circulation speed of the hot air circulating in the No. 2 area 14 faster and faster.

[0034] Finally, by providing a guide bar 26 and a limit block 27 on one side of the bottom of the inner wall of the air storage chamber 24 near the second exhaust port 28, and providing a sealing column 29 between the guide bar 26 and the inner wall of the air storage chamber 24, when the rotating plate 20 rotates upward to above the supporting column 19, the sealing column 29 uses its own gravity to move obliquely downward along the axis of the air storage chamber 24, and the moving direction is toward the axis of the supporting column 19. The sealing column 29 is limited by the limit block 27. At this time, the plug 31 leaves the second exhaust port 28 as the sealing column 29 moves, so that the exhaust port 1 21 is blocked by the upper surface of the sealing column 29, and the sealing column 29 is opened. At this time, the hot air in the air storage chamber 24 can be discharged obliquely upward through the second exhaust port 28, effectively maintaining the boosting function of the rotating plate 20 on the circulation of hot air.

[0035] Among them, the fixing plates 3 are set in three groups and are fixedly installed on the left sides of the three groups of isolation chambers 2 respectively, the bolts 4 are threadedly installed on the right side of the battery box 1, and the blocking plate 5 is pressed and installed on the right side of the battery box 1. The forward direction of the battery box 1 when the vehicle starts is left;

[0036] Three groups of sealing compartments 2 are provided inside the battery box 1, which can isolate and place three-layer battery packs 11 in layers. The vehicle moves horizontally to the left, so that the wind guide frame 9 with a large opening can maximize the wind collision efficiency.

[0037] The top of the heat exchange plate 7 extends upward through the left side of the top of the battery box 1. The top of the battery box 1 is fixedly connected with a guide plate 8. The cross-sectional shape of the guide plate 8 is fan-shaped. The left side of the top of the battery box 1 is fixedly connected with a protective frame 6 located directly above the guide plate 8.

[0038] The fan-shaped guide plate 8 can discharge the hot air discharged upward from the heat exchange plate 7 along the side opposite to the direction of vehicle travel, avoiding the occurrence of backflow phenomenon, and can also generate a high-speed airflow and low-pressure environment near the top opening of the heat exchange plate 7 to assist the air circulation inside the heat exchange plate 7.

[0039] The surface of the support plate 12 is fixedly connected with anti-backflow plates 17 symmetrically distributed front and back, and the opening formed by the two sets of anti-backflow plates 17 faces right;

[0040] like Figure 7 As shown, the backflow prevention plates 17 are installed on both sides of the support plate 12 and are all located in the air inlet area No. 13. The opening formed to the right by the backflow prevention plates 17 can generate resistance and prevent hot air from flowing to the left.

[0041] Among them, a plug 31 is fixedly connected to one end of the sealing column 29 close to the second exhaust port 28, and a clamping strip 30 is fixedly connected to the bottom of the sealing column 29. The clamping strip 30 is slidably clamped in the guide strip 26, and the plug 31 is adapted to be inserted in the second exhaust port 28;

[0042] The plug 31 is inserted into the second exhaust port 28, so that when the rotating plate 20 is located below the support column 19, the exhaust port 28 is blocked by the weight of the sealing column 29 and the plug 31. When the rotating plate 20 rotates upward to a position higher than the support column 19 under the influence of wind, the sealing column 29 and the plug 31 automatically slide obliquely downward under the action of gravity and are limited and abutted by the limit block 27. At this time, the exhaust port 1 21 is blocked and the exhaust port 28 is opened, so that the hot air accumulated in the air storage chamber 24 is discharged obliquely upward along the exhaust port 28.

[0043] Among them, the air inlet 1 23 is closest to the support column 19 and is vertically connected to the air storage cavity 24. The air inlet 25 is provided in two groups and is obliquely connected to the air storage cavity 24. The angle between the axis of the air inlet 25 and the horizontal plane is greater than 1°.

[0044] like Figure 6 As shown, the hot air near the air inlet 1 23 and the air inlet 2 25 can enter the inner cavity of the air storage chamber 24 through the air inlet 1 23 and the air inlet 25. The upper opening of the air storage chamber 24 is the exhaust port 1 21 opened on the upper surface of the rotating plate 20. The upward exhaust port 1 21 can smoothly discharge the hot air.

[0045] The upper surface of the sealing column 29 is in sealing contact with the inner wall of the air storage chamber 24, and one side of the clamping strip 30 can contact with the guide strip 26;

[0046] The sealing column 29 can selectively block the second exhaust port 28 and the first exhaust port 21 , and can slide freely on the inner wall of the air storage chamber 24 under the weight of the sealing column 29 according to the rotation angle and state of the rotating plate 20 .

[0047] The booster components are distributed between every two adjacent support plates 12, and the length of the rotating plate 20 is smaller than the spacing between the two groups of support plates 12;

[0048] The booster assembly is disposed in the second zone 14, i.e., deep in the inner cavity of the flow cavity 10, where the heat can be accumulated to the greatest extent.

[0049] Working principle:

[0050] The battery pack is installed in a new energy vehicle and supplies power to it. The left opening of the air guide frame 9 faces the forward direction of the vehicle, and provides a continuous supply of cold air to the heat exchange plate 7 through the wind when the vehicle moves. Figure 2 , Figure 3 As shown, the cold air passes through the air guide frame 9 to the right and enters the inner cavity of the heat exchange plate 7, and moves to the right along the inner wall of the No. 1 zone 13 to the No. 2 zone 14, and then moves upward along the inner wall of the No. 2 zone 14 to the No. 3 zone 15, and then moves upward along the inner wall of the No. 3 zone 15 to the No. 4 zone 16, and then takes away the heat to complete a cooling cycle;

[0051] In this cooling cycle, the heat exchange plate 7 is directly mounted on the outer surface of the battery pack 11, and three groups of sealing compartments 2 are provided inside the battery box 1, and are used to place three layers of mutually isolated battery packs 11, which are supported by the support plate 12 provided in the inner cavity of the heat exchange plate 7. At the same time, the heat generated by the battery pack 11 during operation is absorbed to achieve the purpose of passive cooling;

[0052] When the car is stationary, such as when it is charging or the user is using it inside the vehicle, the battery pack 11 is in a discharging state and gradually generates heat. The heat is transferred to the inner cavity of the circulation cavity 10 through the heat exchange plate 7 and the support plate 12. At this time, in the No. 2 area 14 and the No. 4 area 16, the heat is gathered in the narrow passage formed between the multiple groups of support plates 12, and a "chimney effect" is formed. The hot air begins to move upward, while pushing the rotating plate 20 located in the No. 2 area 14 upward, so that the rotating plate 20 drives the support column 19 to rotate upward around the axis of the support column 19. At this time, the gap between the rotating plate 20 and the back of the support plate 12 becomes smaller, and the flow rate of the hot air through this gap increases. At the same time, the hot air close to the support column 19 begins to enter the air storage cavity 24 along the air inlet 1 23 and the air inlet 2 25 respectively, and is discharged obliquely upward through the air storage cavity 24 and the exhaust port 1 21, thereby realizing the upward force of the hot air in the No. 2 area 14, and accelerating the air circulation efficiency of the battery box 1 in a stationary state;

[0053] When the car is moving, the heat generation of the battery pack 11 increases rapidly. However, at this time, since the wind guide frame 9 is facing the movement direction of the car, the impact wind formed passes through the wind guide frame 9 and area 13, quickly enters area 2 14, and finally takes away the heat through areas 3 15 and 4 16. In area 2 14, due to the strong wind force generated by the impact wind, the rotating plate 20 will drive the support column 19 to rotate upward, so that the rotating plate 20 is higher than the support column 19 as a whole. The sealing column 29 moves obliquely downward along the inner wall of the guide strip 26 under the action of gravity, and abuts against the limit block 27. At this time, the exhaust port 1 21 is blocked by the upper surface of the sealing column 29, and the exhaust port 2 28 is opened, so that the air passing through the air inlet 1 23, the air storage chamber 24 and the air inlet 2 25 is discharged obliquely upward along the exhaust port 2 28, thereby realizing the upward force of the hot air in area 2 14.

[0054] 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.

[0055] 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 layered isolation type explosion-proof new energy battery pack, comprising a battery box (1), a fixing plate (3), bolts (4) and a blocking plate (5), wherein the inner cavity of the battery box (1) is provided with three groups of isolation chambers (2), and a battery pack (11) is placed inside the isolation chamber (2), characterized in that: The inner wall of the sealing chamber (2) is also fixedly mounted with a heat exchange plate (7) located on the surface of the battery pack (11), a circulation cavity (10) is provided inside the heat exchange plate (7), a plurality of groups of support plates (12) distributed linearly and equidistantly are fixedly connected to the inner wall of the circulation cavity (10), a wind guide frame (9) is fixedly connected to the left opening at the bottom of the battery pack (11), the circulation cavity (10) is distributed from bottom to top into a first zone (13), a second zone (14), a third zone (15) and a fourth zone (16), a plurality of groups of booster components located on the surface of the support plate (12) are provided inside the second zone (14), and support grooves (18) are provided on the front and rear sides of the inner wall of the second zone (14) and the outer surface of the support plate (12); The booster assembly comprises a support column (19) rotatably mounted in a support groove (18); a rotating plate (20) is fixedly connected to the outer surface of the support column (19); a limiting plate (22) is fixedly connected to the surface of the support plate (12); the bottom of the rotating plate (20) abuts against the limiting plate (22); a plurality of exhaust ports (1) (21) are provided on the side of the upper surface of the rotating plate (20) away from the support column (19); a plurality of air inlet ports (23) and air inlet ports (25) are provided in sequence on the lower surface of the rotating plate (20); a plurality of air inlet ports (23) and air inlet ports (25) are provided in the middle of the rotating plate (20) and are respectively connected to the exhaust ports (21) and the air inlet ports (23), the inlet ports (25) and the air inlet ports (25). The air storage chamber (24) is connected to the air outlet 2 (25), and the air storage chamber (24) is perpendicular to the axis of the support column (19). The side of the rotating plate (20) is provided with an air outlet 2 (28) connected to the air storage chamber (24). A guide bar (26) and a limit block (27) are fixedly connected to the bottom of the inner wall of the air storage chamber (24) near the air outlet 2 (28). The inner wall of the guide bar (26) is slidably connected with a sealing column (29). One end of the sealing column (29) blocks the air outlet 2 (28) and is staggered with the air outlet 1 (21). The heat exchange plate (7) is welded to the lower, right and upper surfaces of the battery pack (11).

2. A layered isolation type explosion-proof new energy battery pack according to claim 1, characterized in that: The fixing plates (3) are arranged in three groups and are respectively fixedly installed on the left sides of the three groups of the sealing compartments (2); the bolts (4) are threadedly installed on the right side of the battery box (1); and the blocking plates (5) are press-fitted and installed on the right side of the battery box (1); the forward direction of the battery box (1) when the vehicle starts is left.

3. A layered isolation type explosion-proof new energy battery pack according to claim 2, characterized in that: The top of the heat exchange plate (7) passes through the left side of the top of the battery box (1) upwards, the top of the battery box (1) is fixedly connected to a guide plate (8), the cross-sectional shape of the guide plate (8) is fan-shaped, and the left side of the top of the battery box (1) is fixedly connected to a protective frame (6) located directly above the guide plate (8).

4. A layered isolation type explosion-proof new energy battery pack according to claim 3, characterized in that: The surface of the support plate (12) is fixedly connected with anti-backflow plates (17) which are symmetrically distributed frontward and rearward, and the openings formed by the two groups of anti-backflow plates (17) face rightward.

5. A layered isolation type explosion-proof new energy battery pack according to claim 4, characterized in that: The end of the sealing column (29) close to the second air outlet (28) is fixedly connected to a plug (31), and the bottom of the sealing column (29) is fixedly connected to a clamping strip (30), the clamping strip (30) is slidably clamped in the guide strip (26), and the plug (31) is adapted to be inserted into the second air outlet (28).

6. A layered isolation type explosion-proof new energy battery pack according to claim 5, characterized in that: The air inlet 1 (23) is closest to the support column (19) and is vertically connected to the air storage chamber (24); the air inlet 2 (25) is arranged in two groups and is obliquely connected to the air storage chamber (24); the angle between the axis of the air inlet 2 (25) and the horizontal plane is greater than 1°.

7. A layered isolation type explosion-proof new energy battery pack according to claim 6, characterized in that: The upper surface of the sealing column (29) is in sealing contact with the inner wall of the air storage chamber (24), and one side of the clamping strip (30) can be in contact with the guide strip (26).

8. The layered isolation type explosion-proof new energy battery pack according to claim 7, characterized in that: The boosting components are distributed between every two adjacent groups of support plates (12), and the length of the rotating plate (20) is smaller than the spacing between the two groups of support plates (12).

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