A highly breathable battery casing for new energy vehicles

Abstract

This invention discloses a highly breathable battery casing for new energy vehicles, relating to the field of new energy vehicle battery technology. It includes a battery casing body, which comprises a substrate. A highly breathable sleeve structure is disposed on top of the substrate, and a breathable protective cover structure is disposed on top of the highly breathable sleeve structure. This invention uses an outer sleeve and an inner sleeve to form a double-layer casing. The space between the outer and inner sleeves serves as a heat dissipation and ventilation channel. A heat dissipation groove facilitates ventilation and heat dissipation of the outer sleeve. An expansion pusher plate and a heat dissipation silicone pad are integrally connected and snapped onto the heat dissipation groove. When the temperature is suitable, a reset elastic plate uses its own elasticity to push the expansion pusher plate inward, causing the heat dissipation silicone pad to precisely block the heat dissipation groove, ensuring the battery's sealing and safety. When the internal temperature rises rapidly, the internal air expands, pushing the expansion pusher plate outward to expose the heat dissipation groove for ventilation and heat dissipation.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle battery technology, specifically to a highly breathable battery casing for new energy vehicles. Background Technology

[0002] New energy vehicles are classified into three categories: pure electric vehicles, hybrid electric vehicles, and fuel cell vehicles. Among them, pure electric vehicles and hybrid electric vehicles are the most common types of new energy vehicles in the Chinese market. New energy vehicles use lithium-ion batteries, which are rechargeable batteries. They mainly consist of four parts: positive electrode material, negative electrode material, separator, and electrolyte. Among them, the positive electrode material is the most critical raw material for lithium-ion batteries, accounting for more than 40% of the total cost of lithium-ion batteries. Its essence is to realize the mutual conversion of chemical energy and electrical energy by utilizing the intercalation and deintercalation of lithium ions and the redox reaction of transition metals. It is a device that directly converts chemical energy into electrical energy. It is a battery designed for rechargeability, and recharging is achieved through reversible chemical reactions. Currently, the battery casings on the market seal the cap hole used to fill the electrolyte to prevent electrolyte leakage, and also cover the upper side of the cap hole. However, this makes it difficult for the air inside the battery casing to communicate with the outside air, which may lead to an air pressure difference between the inside and outside, thus causing the battery casing to deform or even be damaged. Therefore, this invention proposes a highly breathable battery casing for new energy vehicles.

[0003] In the prior art, a Chinese patent document with publication number CN101521266B and publication date of February 20, 2013, was proposed to solve the above-mentioned technical problem. The technical solution disclosed in the patent document is as follows: A battery casing (1) includes at least two casing components (2, 3, 4, 5), each casing component enclosing at least one casing cavity (10) in sections. According to the present invention, at least one ventilation channel (7) is provided between the casing components (2, 3, 4, 5), which can realize air exchange between the casing cavity (10) and the environment (8).

[0004] To address the issue of difficulty in using effective ventilation grilles when the battery casing has a shell layer that is tightly attached to the battery, the existing technology uses a ventilation channel formed by reducing the gap between a button that should form the casing component and another casing component. This gap is preferably treated as a gap around the button. However, there is still a situation where the battery casing is only ventilated through the ventilation channel, which leads to the problem that the gap in the ventilation channel makes the battery body not stably supported. Summary of the Invention

[0005] This invention provides a highly breathable battery casing for new energy vehicles to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0007] A highly breathable battery casing for new energy vehicles includes a battery casing body, the battery casing body including a substrate, a highly breathable sleeve structure disposed on the upper surface of the substrate, and a breathable protective cover structure disposed on the upper surface of the highly breathable sleeve structure; the highly breathable sleeve structure includes an outer sleeve unit and an inner sleeve unit, the outer sleeve unit being disposed on the upper surface of the substrate, and the inner sleeve unit being disposed inside the outer sleeve unit; the breathable protective cover structure includes a cover unit and a temperature control and heat dissipation unit, the cover unit being disposed above the outer sleeve unit, and the temperature control and heat dissipation unit being disposed on top of the cover unit.

[0008] A further improvement of the technical solution of the present invention is that: the outer shell unit includes an outer shell fixedly installed on the upper surface of the substrate, air inlets are provided at the bottom of the two side walls of the outer shell, and heat dissipation grooves are provided on the side walls of the outer shell.

[0009] By adopting the above technical solution, the heat dissipation slots and air inlets facilitate ventilation and heat dissipation of the outer shell.

[0010] A further improvement of the technical solution of the present invention is that: a heat dissipation silicone pad is provided on the outer side of the heat dissipation groove, and an expansion push plate is fixedly installed on the inner surface of the heat dissipation silicone pad, and the expansion push plate is snapped into the heat dissipation groove.

[0011] Using the above technical solution, the heat dissipation silicone pad is made of heat dissipation silicone pad material, and the expansion push plate is made of lightweight plastic material.

[0012] A further improvement of the technical solution of the present invention is that: reset elastic plates are provided on both sides of the heat dissipation groove, the outer end of the reset elastic plate is fixedly connected to the inner surface of the outer shell, and the inner side of the reset elastic plate is in contact with the inner surface of the expansion push plate.

[0013] Using the above technical solution, the reset elastic plate is made of elastic plastic material, and the reset elastic plate also has the function of guiding air on both sides of the heat dissipation groove.

[0014] A further improvement of the technical solution of the present invention is that: the inner shell unit includes an inner shell fixedly installed in the middle of the upper surface of the substrate, and air inlets are provided at the bottom of the two side walls of the inner shell, the position of the air inlets being adapted to the position of the air inlet.

[0015] Using the above technical solution, the inner shell is made of breathable material, and the air inlet facilitates the entry of cold air into the interior of the inner shell.

[0016] A further improvement of the technical solution of the present invention is that: a battery panel placement groove is provided on the left inner wall of the inner shell, and an insulating protective pad is provided on the outer side of the battery panel placement groove, and the insulating protective pad is embedded in the left side wall of the inner shell.

[0017] Using the above technical solution, a space is created in the solar panel placement slot to independently place and protect the solar panel, and the insulating protective pad provides insulation protection on the outside of the solar panel.

[0018] A further improvement of the technical solution of the present invention is that: a buffer partition is fixedly installed in the middle of the inner shell, a venting groove is provided on the side wall of the buffer partition, and a battery pack placement partition is fixedly installed on the side wall surface of the buffer partition.

[0019] Using the above technical solution, the buffer partition is hollow and arc-shaped, which has a certain impact-resistant buffering effect. The battery pack placement partition separates the individual battery packs so that the battery cells can be ventilated and dissipated.

[0020] A further improvement of the technical solution of the present invention is that: a bottom heat dissipation and ventilation groove is provided at the bottom of the inner shell, the lower surface of the bottom heat dissipation and ventilation groove is fixedly connected to the upper surface of the substrate, and the position of the bottom heat dissipation and ventilation groove is adapted to the position of the battery pack placement partition.

[0021] Using the above technical solution, the bottom heat dissipation and ventilation groove is an annular groove, which allows the bottom of the battery cell to ventilate and dissipate heat.

[0022] A further improvement of the technical solution of the present invention is that: the sealing unit includes a sealing cover that is snapped onto the upper part of the outer shell, the top of the sealing cover is provided with a heat dissipation arc groove, and an explosion-proof mesh is fixedly installed on the bottom of the inner surface of the sealing cover.

[0023] Using the above technical solution, the explosion-proof mesh is a concave arc-shaped mesh, which has a certain impact resistance and protection function.

[0024] A further improvement of the technical solution of the present invention is that: the temperature control heat dissipation unit includes a heat dissipation fan fixedly installed at the center of the top of the cover, a temperature sensor is provided on one side of the heat dissipation fan, the temperature sensor is fixedly installed on the inner wall of the top of the cover, and the output terminal of the temperature sensor is electrically connected to the control input terminal of the heat dissipation fan.

[0025] Using the above technical solution, the temperature sensor and the heat dissipation fan involve existing technologies in terms of circuits and electronic components, which can be fully implemented by those skilled in the art, and will not be described in detail here.

[0026] Due to the adoption of the above technical solution, the technical progress achieved by this invention compared to the prior art is as follows:

[0027] 1. This invention provides a highly breathable battery casing for new energy vehicles. An outer shell and an inner shell are combined to form a double-layer casing. The space between the outer shell and the inner shell is a heat dissipation and ventilation channel. The heat dissipation groove facilitates the ventilation and heat dissipation of the outer shell. An expansion push plate and a heat dissipation silicone pad are connected as one piece and snapped onto the heat dissipation groove. When the temperature is suitable, the reset elastic plate uses its own elasticity to push the expansion push plate inward, so that the heat dissipation silicone pad just blocks the heat dissipation groove, ensuring the sealing and safety of the battery. When the internal temperature rises rapidly, the internal air expands and pushes the expansion push plate outward, exposing the heat dissipation groove for ventilation and heat dissipation.

[0028] 2. This invention provides a highly breathable battery casing for new energy vehicles. The heat dissipation silicone pad itself has the function of absorbing and dissipating heat, and also has the function of insulation and protection. The inner casing is a lightweight breathable plate, which provides protection for the internal battery pack and battery panel. At the same time, the special spacing design of the expansion push plate and the reset elastic plate provides a buffer protection for the inner casing.

[0029] 3. This invention provides a highly breathable battery casing for new energy vehicles. The battery panel placement slot facilitates the placement of battery panels, the insulating protective pad provides insulation protection for the battery panels, the buffer partition separates the battery packs, and the battery pack placement partition and the bottom heat dissipation and ventilation slot correspond in position to ensure that the battery packs are placed stably at equal intervals. The battery pack placement partition and the buffer partition provide buffer protection for individual batteries, and the ventilation slot ensures internal breathability so that the battery packs can ventilate and dissipate heat, ensuring uniform heat dissipation and avoiding abnormal local temperature rise.

[0030] 4. This invention provides a highly breathable battery casing for new energy vehicles. The cover is fixed to the mounting posts of the base plate by bolts. The cover is sealed after the battery pack is assembled. After the temperature sensor reaches the preset value, it causes the cooling fan to work to draw out the internal hot air through the heat dissipation arc groove. The internal negative pressure allows cold air to enter through the air inlet and the inner air inlet. The bottom heat dissipation and ventilation groove is an annular groove, which, together with the cold air, accelerates the air exchange from bottom to top of the battery pack, thereby improving the heat dissipation rate. The explosion-proof mesh adopts an arc-shaped mesh, which has a certain impact resistance and improves safety. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of the present invention;

[0032] Figure 2 This is a schematic diagram of the structure of the present invention with the cover open;

[0033] Figure 3 This is a schematic diagram of the high-permeability shell structure of the present invention;

[0034] Figure 4This is a schematic diagram of the outer shell structure of the present invention;

[0035] Figure 5 This is a schematic diagram of the internal structure of the cap of the present invention;

[0036] Figure 6 This is a schematic diagram of the structural buffer partition of the present invention;

[0037] Figure 7 This is a schematic cross-sectional view of the structure of the present invention.

[0038] Figure 8 This is a schematic diagram of the expansion pusher plate of the present invention;

[0039] Figure 9 This is an enlarged schematic diagram of structure A of the present invention.

[0040] In the diagram: 1. Battery casing body; 11. Base plate; 2. High-permeability casing structure; 21. Outer casing; 211. Air inlet; 212. Heat dissipation groove; 22. Heat dissipation silicone pad; 23. Expansion push plate; 24. Reset elastic plate; 25. Inner casing; 251. Inner air inlet; 26. Battery panel placement groove; 27. Insulating protective pad; 28. Buffer partition; 281. Ventilation groove; 282. Battery pack placement partition; 29. ​​Bottom heat dissipation and ventilation groove; 3. Ventilation and protective cover structure; 31. Cover; 311. Heat dissipation arc groove; 32. Explosion-proof mesh; 33. Heat dissipation exhaust fan; 34. Temperature sensor. Detailed Implementation

[0041] The present invention will be further described in detail below with reference to embodiments: Example 1

[0042] like Figure 1-9As shown, this invention provides a highly breathable battery casing for new energy vehicles, including a battery casing body 1. The battery casing body 1 includes a substrate 11, a highly breathable sleeve structure 2 is disposed above the substrate 11, and a breathable protective cover structure 3 is disposed above the highly breathable sleeve structure 2. The highly breathable sleeve structure 2 includes an outer sleeve unit and an inner sleeve unit. The outer sleeve unit is disposed on the upper surface of the substrate 11, and the inner sleeve unit is disposed inside the outer sleeve unit. The breathable protective cover structure 3 includes a cover unit and a temperature control and heat dissipation unit. The cover unit is disposed above the outer sleeve unit, and the temperature control and heat dissipation unit is disposed on top of the cover unit. The component includes an outer shell 21 fixedly mounted on the upper surface of the substrate 11. Air inlets 211 are provided at the bottom of the two side walls of the outer shell 21. Heat dissipation grooves 212 are provided on the side walls of the outer shell 21. The outer shell 21 and the inner shell 25 are combined to form a double-layer shell. The space between the outer shell 21 and the inner shell 25 is a heat dissipation and ventilation channel. The heat dissipation grooves 212 facilitate the ventilation and heat dissipation of the outer shell 21. A heat dissipation silicone pad 22 is provided on the outer side of the heat dissipation silicone pad 22. An expansion push plate 23 is fixedly mounted on the inner surface of the heat dissipation silicone pad 22. The expansion push plate 23 is snapped into the heat dissipation groove 212. The expansion push plate 23 and the heat dissipation silicone pad 22 are connected as one piece and snapped into the heat dissipation groove 212.

[0043] Furthermore, when the temperature is suitable, the reset elastic plate 24 uses its own elasticity to push the expansion push plate 23 inward, so that the heat dissipation silicone pad 22 just blocks the heat dissipation groove 212, ensuring the sealing and safety of the battery. When the internal temperature rises rapidly, the internal air expands and pushes the expansion push plate 23 outward, so that the heat dissipation groove 212 is exposed for ventilation and heat dissipation. Example 2

[0044] like Figure 1-9 As shown, based on Embodiment 1, the present invention provides a technical solution: Preferably, reset elastic plates 24 are provided on both sides of the heat dissipation groove 212. The outer end of the reset elastic plate 24 is fixedly connected to the inner surface of the outer shell 21, and the inner side of the reset elastic plate 24 is in contact with the inner surface of the expansion push plate 23. The heat dissipation silicone pad 22 itself has the function of absorbing and dissipating heat, and at the same time has the function of insulating protection. The inner shell unit includes an inner shell 25 fixedly installed in the middle of the upper surface of the substrate 11. The bottom of the two side walls of the inner shell 25 is provided with an air inlet 251. The position of the air inlet 251 is adapted to the position of the air inlet 211. The inner shell 25 is a lightweight and breathable plate, which provides protection for the internal battery pack and battery panel. At the same time, the special spacing design between the expansion push plate 23 and the reset elastic plate 24 provides a buffer protection for the inner shell 25. Example 3

[0045] like Figure 1-9As shown, based on embodiments 1-2, the present invention provides a technical solution: Preferably, a battery panel placement groove 26 is provided on the left inner wall of the inner casing 25, and an insulating protective pad 27 is provided on the outer side of the battery panel placement groove 26. The insulating protective pad 27 is embedded in the left side wall of the inner casing 25. The battery panel placement groove 26 facilitates the placement of battery panels, the insulating protective pad 27 provides insulation protection for the battery panels, and a buffer partition 28 separates the battery packs. A buffer partition 28 is fixedly installed in the middle of the inner casing 25, and a venting groove 281 is provided on the side wall of the buffer partition 28. A buffer partition 28 is fixedly installed on the side wall surface of the buffer partition 28. A battery pack placement partition 282 is provided, and the battery pack placement partition 282 is positioned in accordance with the bottom heat dissipation and ventilation groove 29 to ensure that the battery packs are placed stably at equal intervals. The battery pack placement partition 282 and the buffer partition 28 provide buffer protection for individual batteries. The bottom of the inner shell 25 is provided with a bottom heat dissipation and ventilation groove 29, and the lower surface of the bottom heat dissipation and ventilation groove 29 is fixedly connected to the upper surface of the substrate 11. The position of the bottom heat dissipation and ventilation groove 29 is adapted to the position of the battery pack placement partition 282. The ventilation groove 281 ensures internal air permeability so that the battery packs can ventilate and dissipate heat, ensuring uniform heat dissipation and avoiding abnormal local temperature rise. Example 4

[0046] like Figure 1-9 As shown, based on embodiments 1-3, the present invention provides a technical solution: Preferably, the sealing unit includes a sealing cover 31 snapped onto the outer casing 21. The top of the sealing cover 31 is provided with a heat dissipation arc groove 311. An explosion-proof mesh 32 is fixedly installed on the bottom of the inner surface of the sealing cover 31. The sealing cover 31 is fixed to the mounting posts of the substrate 11 by bolts. The sealing is performed after the battery pack assembly is completed. After the temperature sensor 34 reaches a preset value, it causes the heat dissipation fan 33 to operate, drawing out the internal hot air through the heat dissipation arc groove 311. The temperature control and heat dissipation unit includes a fixed... A cooling fan 33 is installed at the center of the top of the cover 31. A temperature sensor 34 is provided on one side of the cooling fan 33. The temperature sensor 34 is fixedly installed on the inner wall of the top of the cover 31. The output terminal of the temperature sensor 34 is electrically connected to the control input terminal of the cooling fan 33. The internal negative pressure allows cold air to enter through the air inlet 211 and the inner air inlet 251. The bottom heat dissipation and ventilation groove 29 is an annular groove that works with the cold air to accelerate air exchange from the bottom of the battery pack to the top, thereby improving the heat dissipation rate. The explosion-proof mesh 32 adopts an arc-shaped mesh, which has a certain impact resistance and improves safety.

[0047] The working principle of the highly breathable battery casing used in this new energy vehicle will be explained in detail below.

[0048] like Figure 1-9As shown, firstly, individual battery cells are installed between battery pack placement partitions 282. The battery pack placement partitions 282 and buffer partitions 28 provide buffer protection for individual batteries. Ventilation slots 281 ensure internal ventilation, allowing for heat dissipation between battery cells. Circuit boards are installed inside battery plate placement slots 26 to connect the wiring. Insulating protective pads 27 provide insulation protection for the battery plates. After ensuring the circuit board terminals pass through the wiring holes in the cover 31, the cover 31 is closed and secured with bolts. Then, the space between the outer shell 21 and the inner shell 25 serves as a heat dissipation and ventilation channel. The reset elastic plate 24 uses its own elasticity to push the expansion push plate 23 inward. The heat dissipation silicone pad 22 precisely blocks the heat dissipation groove 212, ensuring the battery's sealing and safety. When the internal temperature rises rapidly, the internal air expands, pushing the expansion pusher 23 outward to expose the heat dissipation groove 212 for ventilation and heat dissipation. Finally, after the temperature sensor 34 reaches the preset value, it causes the cooling exhaust fan 33 to work, drawing out the internal hot air through the heat dissipation arc groove 311. The internal negative pressure allows cold air to enter through the air inlet 211 and the air inlet 251. The bottom heat dissipation and ventilation groove 29 is an annular groove that works with the cold air to accelerate air exchange from bottom to top of the battery pack, improving the heat dissipation rate.

[0049] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A highly breathable battery casing for new energy vehicles, comprising a battery casing body (1), wherein the battery casing body (1) includes a substrate (11), characterized in that: The upper side of the substrate (11) is provided with a high air permeability sleeve structure (2), and the upper side of the high air permeability sleeve structure (2) is provided with an air permeable protective cover structure (3). The high air permeability sleeve structure (2) comprises an outer sleeve unit and an inner sleeve unit, the outer sleeve unit is arranged on the upper surface of the substrate (11), and the inner sleeve unit is arranged inside the outer sleeve unit. The air permeable protective cover structure (3) comprises a cover unit and a temperature control heat dissipation unit, the cover unit is arranged above the outer sleeve unit, and the temperature control heat dissipation unit is arranged on the top of the cover unit. The outer sleeve unit comprises an outer sleeve (21) fixedly installed on the upper surface of the substrate (11), air inlets (211) are arranged at the bottom of the side walls of the outer sleeve (21), and heat dissipation grooves (212) are arranged on the side walls of the outer sleeve (21). The outer side of the heat dissipation groove (212) is provided with a heat dissipation silica gel pad (22), the inner side surface of the heat dissipation silica gel pad (22) is fixedly installed with an expansion push plate (23), and the expansion push plate (23) is clamped and installed in the heat dissipation groove (212). The cover unit comprises a cover (31) clamped and installed above the outer sleeve (21), the top of the cover (31) is provided with a heat dissipation arc-shaped groove (311), and the inner surface of the cover (31) is fixedly installed with an explosion-proof net (32) at the bottom. The two sides of the heat dissipation groove (212) are provided with reset elastic plates (24), the outer side end of the reset elastic plate (24) is fixedly connected with the inner surface of the outer sleeve (21), and the inner side of the reset elastic plate (24) is in contact with the inner side surface of the expansion push plate (23).

2. The high-breathability battery case for a new energy vehicle according to claim 1, characterized in that: The inner sleeve unit comprises an inner sleeve (25) fixedly installed on the upper surface of the substrate (11), air inlet inner openings (251) are arranged at the bottom of the side walls of the inner sleeve (25), and the positions of the air inlet inner openings (251) are matched with the positions of the air inlets (211).

3. The high-breathability battery case for a new energy vehicle according to claim 2, characterized in that: The left inner wall of the inner sleeve (25) is provided with a battery plate placing groove (26), the outer side of the battery plate placing groove (26) is provided with an insulating protection pad (27), and the insulating protection pad (27) is inlaid on the left side wall of the inner sleeve (25).

4. The high-breathability battery case for a new energy vehicle according to claim 3, characterized in that: The middle part of the inner sleeve (25) is fixedly installed with a buffer partition plate (28), the side wall of the buffer partition plate (28) is provided with an air permeable groove (281), and the side wall surface of the buffer partition plate (28) is fixedly installed with a battery pack placing partition plate (282).

5. The high-breathability battery case for a new energy vehicle according to claim 4, characterized in that: The bottom of the inner sleeve (25) is provided with a bottom heat dissipation air permeable groove body (29), the lower surface of the bottom heat dissipation air permeable groove body (29) is fixedly connected with the upper surface of the substrate (11), and the position of the bottom heat dissipation air permeable groove body (29) is matched with the position of the battery pack placing partition plate (282).

6. The high-breathability battery case for a new energy vehicle according to claim 1, characterized in that: The temperature control heat dissipation unit comprises a heat dissipation exhaust fan (33) fixedly installed at the center of the top of the cover (31), one side of the heat dissipation exhaust fan (33) is provided with a temperature sensor (34), the temperature sensor (34) is fixedly installed on the inner wall of the top of the cover (31), and the output end of the temperature sensor (34) is electrically connected with the control input end of the heat dissipation exhaust fan (33).

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