A bottom heat dissipation device for new energy vehicle batteries

Abstract

The present application discloses a bottom heat dissipation device for a new energy vehicle battery, relating to the technical field of heat dissipation of automobile batteries, which includes a heat dissipation component and a battery box; the heat dissipation component includes a fixing plate and a through-groove 1; there are two fixing plates, the fixing plates are isosceles trapezoidal, and the installation direction of the fixing plates is parallel to the ground; the fixing plate is provided with a through-groove 1, the through-groove 1 is a quadrangular pyramid, and its cross-section parallel to the ground is an isosceles trapezoidal, and the installation direction of the through-groove 1 is parallel to the installation direction of the fixing plate; it can improve the heat dissipation effect of the battery box, and the through-groove 2 is opened at the upper and lower parts of the battery box, and the through-groove 2 is connected to the through-groove 1, so that wind can enter the through-groove 2, cool the upper and lower parts of the battery, and dissipate heat, thereby improving the heat dissipation efficiency of the battery box.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile battery heat dissipation, and in particular to a bottom heat dissipation device for a new energy automobile battery. Background Art

[0002] New energy vehicles refer to vehicles that use unconventional automotive fuels as their power source or use conventional automotive fuels, adopt new on-board power devices, and integrate advanced technologies in vehicle power control and drive to form vehicles with advanced technical principles, new technologies, and new structures.

[0003] In the prior art, the wind force generated during vehicle driving is utilized for heat dissipation, which effectively saves energy. The battery frame group is set into a bilaterally symmetrical frame group shape, and the front side is made into a trumpet-shaped air outlet, which concentrates the wind force to blow to the central heat dissipation channel, which can increase the wind speed and thus accelerate the heat dissipation. However, during use, heat can only be dissipated around the battery box, and the upper and lower sides of the battery box do not have the cooling and heat dissipation effect. The bottom of the battery in the battery box is in direct contact with the battery box. In the case of uneven heat dissipation for a long time, the life of the batteries stored inside may be affected. For example, Chinese patent CN111952507A provides a new energy vehicle battery pack heat dissipation device, in which the left head frame wall and the right head frame wall of the battery frame group form a trumpet-shaped air outlet, and the frame walls of the left and right frames and the frame wall of the tail frame form a fishbone-shaped air duct. When in use, the battery pack is placed in each battery frame respectively; when the new energy vehicle is driving, the strong wind will enter the air outlet and then pass through the fishbone-shaped air duct. This process can quickly remove the heat generated by the battery pack in the battery frame group, effectively dissipating the heat.

[0004] It has a major disadvantage: during use, it can only dissipate heat around the battery box, and has no cooling effect on the upper and lower sides of the battery box. The bottom of the battery in the battery box is in direct contact with the battery box. In the case of uneven heat dissipation for a long time, the life of the battery stored inside may be affected. Summary of the Invention

[0005] The embodiment of the present application solves the problem in the prior art that the battery box is in direct contact with the bottom of the battery stored inside, and the heat dissipation structure does not have the effect of cooling the upper and lower sides of the battery box, resulting in uneven heat dissipation effect, by providing a bottom heat dissipation device for new energy vehicle batteries. The second through-groove is opened on the upper and lower sides of the battery box, and the second through-groove is connected to the first through-groove, which can dissipate heat from the upper and lower sides of the battery box, thereby improving the heat dissipation efficiency of the battery box.

[0006] The embodiment of the present application provides a bottom heat dissipation device for a new energy vehicle battery, comprising a heat dissipation assembly and a battery box;

[0007] The heat dissipation assembly includes a fixing plate and a through slot 1;

[0008] There are two fixing plates, each of which is an isosceles trapezoid, and the installation direction of the fixing plates is parallel to the ground;

[0009] The fixing plate is provided with a through-groove 1, which is in the shape of a quadrangular pyramid, and its cross section parallel to the ground is an isosceles trapezoid, and the installation direction of the through-groove 1 is parallel to the installation direction of the fixing plate;

[0010] The battery box is located between two fixing plates. There are five to ten battery boxes, which are evenly spaced and distributed on both sides of the through slot in an installation direction. A gap is left between two adjacent fixing plates on the same side of the through slot.

[0011] The fixing plate on the lower side of the battery box is fixed to the car;

[0012] The heat dissipation assembly further includes a second through slot;

[0013] The fixing plate has a through groove 2 on one side close to the battery box. The number of the through grooves 2 is ten to twenty. The through grooves 2 are parallelogram-shaped. The installation direction of the through grooves 2 is parallel to the installation direction of the battery box. The through grooves 2 are connected to the through groove 1. There are five to ten through grooves 2, and they correspond one-to-one to the battery boxes. The through grooves 2 are located on the upper and lower sides of the battery box.

[0014] As an improvement, the battery box is in the shape of a parallelogram, the battery box is fixed on the lower fixing plate, and the fixing plate on the upper side of the battery box is placed on the battery box.

[0015] As an improvement, the installation direction of the battery box and the installation direction of the through slot 1 form an angle of 40-70 degrees.

[0016] As an improvement, the side wall of one side of the through groove is parallel to the battery box fixed above the side wall and close to the side wall of the through groove.

[0017] As an improvement, the heat dissipation assembly further includes a fixing bolt;

[0018] The fixing bolts pass through the upper fixing plate of the battery box and are threadedly connected to the lower fixing plate of the battery box. There are three to six fixing bolts, which are evenly spaced.

[0019] As an improvement, the heat dissipation assembly further includes airbag 1, airbag 2 and an air pump;

[0020] The airbag 1 is fixed on the side wall of the through slot 2 away from the battery box;

[0021] There are two air bags 2 located between two adjacent battery boxes on the same side of the through slot, and the two air bags 2 are fixed on two fixing plates respectively;

[0022] There are two air pumps, which correspond to the fixed plates one by one. The air pump is fixed on one side of the fixed plate. The air pump has multiple output ends, which are respectively connected to the airbag 1 and airbag 2 on the corresponding fixed plate.

[0023] As an improvement, the airbag 1 and the airbag 2 are made of latex material.

[0024] As an improvement, the heat dissipation assembly further includes a storage air bag, a through hole and a fusible sticker;

[0025] There are ten to twenty storage airbags, each of which is fixed to the corresponding airbag one or airbag two. A gap is left between the storage airbag and airbag one, and is filled with carbon dioxide. A gap is left between the storage airbag and airbag two, and is also filled with carbon dioxide.

[0026] The storage airbag is provided with through holes, which are cylindrical in shape, and there are five to ten through holes, which are evenly spaced.

[0027] The fusible sticker is circular, the axis of the fusible sticker and the axis of the through hole are on the same straight line, and the outer ring of the fusible sticker is fixed to the inner wall of the through hole.

[0028] As an improvement, the melting point of the fusible sticker is 80 degrees Celsius.

[0029] As an improvement, the storage airbag is made of latex material.

[0030] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0031] First, the heat dissipation effect of the battery box can be improved. A second through-slot is provided at the top and bottom of the battery box, and the second through-slot is connected to the first through-slot, so that air can enter the second through-slot, cool the top and bottom of the battery, and dissipate heat, thereby improving the heat dissipation efficiency of the battery box;

[0032] Secondly, the continuous expansion and contraction of the first and second airbags can accelerate the cooling effect of the battery box. At the same time, when the car is stopped, the battery can also be cooled. It can also prevent clogging by preventing dust from causing clogging. The expansion of the first and second airbags can keep the battery box warm in winter.

[0033] Thirdly, it can improve the safety of the device during use. The carbon dioxide filled inside can be squeezed out to extinguish the battery fire and ensure the driver's life safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a front view of a bottom heat dissipation device for a new energy vehicle battery according to the present invention;

[0035] Figure 2 This is a top view of the battery box installation of a bottom heat dissipation device for a new energy vehicle battery according to the present invention;

[0036] Figure 3 This is a top view of a through groove 2 of a bottom heat dissipation device for a new energy vehicle battery according to the present invention;

[0037] Figure 4 This is a three-dimensional cross-sectional view of the through groove 1 and the through groove 2 of a bottom heat dissipation device for a new energy vehicle battery according to the present invention;

[0038] Figure 5 This is a three-dimensional cross-sectional view of a battery box fixing of a bottom heat dissipation device for a new energy vehicle battery according to the present invention;

[0039] Figure 6 This is a schematic diagram of the installation of airbag 1 and airbag 2 of a bottom heat dissipation device for a new energy vehicle battery according to the present invention;

[0040] Figure 7 A schematic diagram of a storage airbag installation airbag for a bottom heat dissipation device of a new energy vehicle battery according to the present invention;

[0041] Figure 8 This is a schematic diagram of installing airbag 2 of a storage airbag of a bottom heat dissipation device for a new energy vehicle battery according to the present invention.

[0042] In the figure: 100, heat dissipation assembly; 110, fixing plate; 111, through-slot 1; 112, through-slot 2; 120, fixing bolt; 130, airbag 1; 140, airbag 2; 150, storage airbag; 151, through-hole; 160, fusible sticker; 170, air pump;

[0043] 200. Battery box. DETAILED DESCRIPTION

[0044] To facilitate understanding of the present invention, the present application will be described more comprehensively below with reference to the relevant drawings; the drawings show preferred embodiments of the present invention, but the present invention can be implemented in many different forms and is not limited to the embodiments described herein; on the contrary, the purpose of providing these embodiments is to enable a more thorough and comprehensive understanding of the disclosed content of the present invention.

[0045] It should be noted that the terms “vertical”, “horizontal”, “up”, “down”, “left”, “right” and similar expressions used in this document are for illustrative purposes only and do not represent the only implementation method.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains; the terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0047] The batteries are placed in the battery box 200. When the car is driving, the wind generated enters from the end with the larger opening of the through-slot 111, and then flows into the gap between the through-slot 2 112 and the battery box 200 through the diversion channel. Part of the wind is discharged from the end with the smaller opening of the through-slot 111. The wind that enters the gap between the through-slot 2 112 and the battery box 200 is discharged from the end of the gap between the through-slot 2 112 and the battery box 200 away from the through-slot 1 111. During the transportation process, the wind dissipates heat on both sides and the top and bottom of the battery box 220.

[0048] Example 1

[0049] like Figure 1-Figure 5 As shown, the present application discloses a bottom heat dissipation device for a new energy vehicle battery, comprising a heat dissipation assembly 100 and a battery box 200;

[0050] The heat dissipation assembly 100 includes a fixing plate 110 and a through slot 111;

[0051] There are two fixing plates 110, each of which is an isosceles trapezoid, and the installation direction of the fixing plates 110 is parallel to the ground;

[0052] The fixing plate 110 has a through-groove 111, which is in the shape of a quadrangular pyramid and has an isosceles trapezoidal cross-section parallel to the ground. The installation direction of the through-groove 111 is parallel to the installation direction of the fixing plate 110.

[0053] The battery box 200 is located between the two fixing plates 110. There are five to ten battery boxes 200, which are evenly spaced on both sides of the through slot 111 in the installation direction. A gap is left between two adjacent fixing plates 110 on the same side of the through slot 111.

[0054] The fixing plate 110 on the lower side of the battery box 200 is fixed to the car;

[0055] The heat dissipation assembly 100 further includes a second through slot 112;

[0056] The fixing plate 110 has a second through-groove 112 on a side close to the battery box 200. The number of the second through-groove 112 is ten to twenty. The second through-groove 112 is parallelogram-shaped. The installation direction of the second through-groove 112 is parallel to the installation direction of the battery box 200. The second through-groove 112 is connected to the first through-groove 111. There are five to ten second through-groove 112, and they correspond one to one with the battery box 200. The second through-groove 112 is located on the upper and lower sides of the battery box 200.

[0057] The battery box 200 is in the shape of a parallelogram. The battery box 200 is fixed on the lower fixing plate 110. The fixing plate 110 on the upper side of the battery box 200 is placed on the battery box 200.

[0058] The installation direction of the battery box 200 and the installation direction of the through slot 111 are at an angle of 40-70 degrees;

[0059] The side wall of the through groove 111 is parallel to the battery box 200 fixed above the side wall and close to the side wall of the through groove 111;

[0060] The heat dissipation assembly 100 further includes a fixing bolt 120;

[0061] The fixing bolts 120 pass through the upper fixing plate 110 of the battery box 200 and are threadedly connected to the lower fixing plate 110 of the battery box 200. There are three to six fixing bolts 120 and they are evenly spaced.

[0062] The batteries are placed in the battery box 200. When the car is driving, the wind generated enters from the end with the larger opening of the through-slot 111, and then flows into the gap between the through-slot 2 112 and the battery box 200 through the diversion channel. Part of the wind is discharged from the end with the smaller opening of the through-slot 111. The wind that enters the gap between the through-slot 2 112 and the battery box 200 is discharged from the end of the gap between the through-slot 2 112 and the battery box 200 away from the through-slot 1 111. During the transportation process, the wind dissipates heat on both sides and the top and bottom of the battery box 220.

[0063] Compared with the prior art, the heat dissipation effect of the battery box 200 can be improved. The through-groove 2 112 is opened at the upper and lower parts of the battery box 200, and the through-groove 2 112 is connected to the through-groove 1 111, so that wind can enter the through-groove 2 112, cool the upper and lower parts of the battery, and dissipate heat, thereby improving the heat dissipation efficiency of the battery box 200.

[0064] Example 2

[0065] When the embodiment 1 is in use, heat is dissipated through the installed through slot 1 111, through slot 2 112 and the gaps between the two adjacent battery boxes 200. However, during use, the heat dissipation effect of the battery box 200 where the wind enters the through slot 1 111 is better than that of the battery boxes 200 behind. After the wind enters, the wind force gradually decreases and is continuously separated and discharged through the gaps between the battery boxes 200, resulting in poor heat dissipation effect of the battery boxes 200 behind. At the same time, when the car stops, no wind enters from the through slot 1 111, and the battery box 200 still has residual heat, which cannot be cooled quickly. Based on this, the solution of the embodiment 1 is improved, such as Figure 6 As shown:

[0066] The heat dissipation assembly 100 further includes an air bag 1 130 , an air bag 2 140 and an air pump 170 ;

[0067] The airbag 1 130 is fixed on the side wall of the through-groove 2 112 away from the battery box 200;

[0068] There are two second air bags 140 between two adjacent battery boxes 200 on the same side of the first through slot 111. The two second air bags 140 are fixed on two fixing plates 110 respectively.

[0069] The airbag 1 130 and the airbag 2 140 are made of latex;

[0070] There are two air pumps 170, which correspond one to one with the fixed plate 110. The air pump 170 is fixed on one side of the fixed plate 110. The air pump 170 has multiple output ends, and the multiple output ends of the air pump 170 are respectively connected to the airbag 1 130 and the airbag 2 140 on the corresponding fixed plate 110.

[0071] When in use, the continuous expansion and contraction of airbag 1 130 and airbag 2 140 can drive the internal gas flow, thereby accelerating the cooling effect of the battery box 200, and improving the heat dissipation effect of the rear part of the battery box 200. At the same time, when the car is stopped, the battery box 200 is cooled by the continuous expansion and contraction of airbag 1 130 and airbag 2 140.

[0072] Through the continuous expansion and contraction of airbag 1 130 and airbag 2 140, the cooling effect of the battery box 200 is accelerated. At the same time, when the car stops, the battery can also be cooled. It can also play an anti-clogging role and prevent dust from causing blockage. The expansion of airbag 1 130 and airbag 2 140 can keep the battery box 200 warm in winter.

[0073] Example 3

[0074] When the solution of the second embodiment is in use, the cooling effect of the battery box 200 is accelerated by the continuous expansion and contraction of the airbag 1 130 and the airbag 2 140. However, when the battery is used for a long time and the temperature is too high, the battery will spontaneously combust and it will be impossible to extinguish the fire of the battery, causing a fire. Based on this, the solution of the second embodiment is improved, such as Figure 7-Figure 8 As shown:

[0075] The heat dissipation assembly 100 further includes a storage air bag 150 , a through hole 151 and a fusible sticker 160 ;

[0076] There are ten to twenty storage airbags 150 , each of which is fixed to the corresponding airbag 1 130 or airbag 2 140 . A gap is left between the storage airbag 150 and the airbag 1 130 , and is filled with carbon dioxide. A gap is left between the storage airbag 150 and the airbag 2 140 , and is also filled with carbon dioxide.

[0077] The storage airbag 150 is made of latex;

[0078] The storage airbag 150 has through holes 151 , which are cylindrical in shape. There are five to ten through holes 151 , which are evenly spaced.

[0079] The fusible sticker 160 is circular, the axis of the fusible sticker 160 and the axis of the through hole 151 are on the same straight line, and the outer ring of the fusible sticker 160 is fixed to the inner wall of the through hole 151;

[0080] The melting point of the fusible sticker 160 is 80 degrees Celsius.

[0081] During use, when the temperature is too high and the battery spontaneously combusts, the fusible sticker 160 melts, and then the airbag 1 130 and the airbag 2 140 continue to expand, so that the carbon dioxide filled inside is discharged, and the fire of the spontaneously combusted battery is extinguished.

[0082] The safety of the device during use can be improved by squeezing the carbon dioxide filled inside to extinguish the battery fire and ensure the driver's life safety.

[0083] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Various modifications and variations are readily apparent to those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A bottom heat dissipation device for a new energy vehicle battery, comprising a heat dissipation component (100) and a battery box (200); The heat dissipation assembly (100) comprises a fixing plate (110) and a through slot (111); There are two fixing plates (110), each of which is an isosceles trapezoid, and the installation direction of the fixing plates (110) is parallel to the ground; The fixing plate (110) is provided with a through groove (111), the through groove (111) is in the shape of a quadrangular pyramid, and its cross section parallel to the ground is an isosceles trapezoid, and the installation direction of the through groove (111) is parallel to the installation direction of the fixing plate (110); The battery box (200) is located between two fixing plates (110), and there are five to ten battery boxes (200) that are evenly spaced and distributed on both sides of the installation direction of the through slot 1 (111), with a gap left between two adjacent fixing plates (110) located on the same side of the through slot 1 (111); The fixing plate (110) on the lower side of the battery box (200) is fixed on the car; It is characterized in that The heat dissipation assembly (100) further includes a second through-groove (112); The fixing plate (110) has a second through-groove (112) on one side close to the battery box (200). The number of the second through-groove (112) is ten to twenty. The second through-groove (112) is in the shape of a parallelogram. The installation direction of the second through-groove (112) is parallel to the installation direction of the battery box (200). The second through-groove (112) is connected to the first through-groove (111). There are five to ten second through-groove (112), and they correspond one to one with the battery box (200). The second through-groove (112) is located on the upper and lower sides of the battery box (200).

2. A bottom heat dissipation device for a new energy vehicle battery according to claim 1, characterized in that: The battery box (200) is in the shape of a parallelogram. The battery box (200) is fixed on a lower fixing plate (110), and the fixing plate (110) on the upper side of the battery box (200) is placed on the battery box (200).

3. A bottom heat dissipation device for a new energy vehicle battery according to claim 1, characterized in that: The installation direction of the battery box (200) and the installation direction of the through slot 1 (111) form an angle of 40-70 degrees.

4. A bottom heat dissipation device for a new energy vehicle battery as claimed in claim 3, characterized in that: The side wall of one side of the through groove (111) is parallel to the battery box (200) fixed above the side wall and close to the side wall of the through groove (111).

5. A bottom heat dissipation device for a new energy vehicle battery as claimed in claim 2, characterized in that: The heat dissipation assembly (100) further includes a fixing bolt (120); The fixing bolts (120) pass through the upper fixing plate (110) of the battery box (200) and are threadedly connected to the lower fixing plate (110) of the battery box (200). There are three to six fixing bolts (120) and they are evenly spaced.

6. A bottom heat dissipation device for a new energy vehicle battery as claimed in claim 5, characterized in that: The heat dissipation assembly (100) further includes airbag 1 (130), airbag 2 (140) and an air pump (170); The air bag 1 (130) is fixed on the side wall of the through groove 2 (112) away from the battery box (200); There are two air bags (140) between two adjacent battery boxes (200) on the same side of the through slot (111), and the two air bags (140) are fixed on two fixing plates (110) respectively. There are two air pumps (170), which correspond to the fixed plates (110) one by one. The air pumps (170) are fixed on one side of the fixed plate (110). The air pumps (170) have multiple output ends, and the multiple output ends of the air pumps (170) are respectively connected to the airbag 1 (130) and the airbag 2 (140) on the corresponding fixed plate (110).

7. A bottom heat dissipation device for a new energy vehicle battery according to claim 6, characterized in that: The airbag 1 (130) and the airbag 2 (140) are made of latex material.

8. The bottom heat dissipation device for a new energy vehicle battery according to claim 6, characterized in that: The heat dissipation assembly (100) further includes a storage air bag (150), a through hole (151) and a fusible sticker (160); There are ten to twenty storage airbags (150), and the storage airbags (150) are respectively fixed on the corresponding airbag 1 (130) or airbag 2 (140). A gap is left between the storage airbag (150) and the airbag 1 (130), and is filled with carbon dioxide. A gap is left between the storage airbag (150) and the airbag 2 (140), and is filled with carbon dioxide. The storage air bag (150) is provided with a through hole (151), the through hole (151) is cylindrical, and there are five to ten through holes (151) that are evenly spaced. The fusible sticker (160) is circular, the axis of the fusible sticker (160) and the axis of the through hole (151) are on the same straight line, and the outer ring of the fusible sticker (160) is fixed to the inner wall of the through hole (151).

9. A bottom heat dissipation device for a new energy vehicle battery as claimed in claim 8, characterized in that: The melting point of the fusible sticker (160) is 80 degrees Celsius.

10. A bottom heat dissipation device for a new energy vehicle battery according to claim 8, characterized in that: The storage air bag (150) is made of latex material.

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