Heat dissipation type new energy automobile battery shell

Abstract

The utility model relates to a heat dissipation type new energy automobile battery shell, relates to the technical field of battery shells, and aims to solve the problem of poor heat dissipation of a battery shell, the heat dissipation type new energy automobile battery shell comprises a main shell body, the two ends of the main shell body are open, heat dissipation end covers are arranged at the two ends of the main shell body, and any heat dissipation end cover comprises a base and a flow guide outer cover; the base is arranged on the side, close to the main shell, of the flow guide outer cover, the base and the flow guide outer cover are each of a hollow structure and communicate with the interior of the main shell, flow guide through holes are formed in the four side walls of the base in a penetrating mode, and a fan module is arranged in the main shell. And a fan notch for air flow to circulate is formed in the main shell. The battery pack has the effects of effectively absorbing heat generated by the battery and quickly dissipating the heat.

Description

Technical Field

[0001] This application relates to the field of battery casing technology, and in particular to a heat-dissipating type battery casing for new energy vehicles. Background Technology

[0002] With the booming development of the new energy vehicle industry, the battery, as its core component, directly affects the vehicle's range, power performance, and passenger and vehicle safety. Lithium-ion batteries, with their significant advantages such as high energy density, long cycle life, low self-discharge rate, and relative environmental friendliness, have stood out in the new energy vehicle market and occupy a pivotal position.

[0003] However, as new energy vehicles continue to demand higher driving ranges and performance, battery technology faces numerous challenges. Among these, heat dissipation is particularly critical. Batteries generate a significant amount of heat during operation, and poor heat dissipation can not only lead to increased battery temperature, affecting battery performance and lifespan, but may also cause safety issues such as thermal runaway or even explosions, thus requiring improvement. Utility Model Content

[0004] To address the issue of poor heat dissipation in battery casings, this application provides a heat-dissipating battery casing for new energy vehicles.

[0005] The heat-dissipating battery casing for new energy vehicles provided in this application adopts the following technical solution:

[0006] A heat-dissipating battery casing for new energy vehicles includes a main casing with open ends. Each end of the main casing has a heat dissipation end cap, and each heat dissipation end cap includes a base and a flow guide cover. The base is arranged on the side of the flow guide cover closer to the main casing. Both the base and the flow guide cover are hollow structures and are connected to the main casing. The four side walls of the base are provided with flow guide holes. A fan module is provided inside the main casing, and a fan slot for airflow is provided on the main casing.

[0007] Since heat dissipation of the battery casing is particularly critical, the battery generates a lot of heat during operation. If heat dissipation is poor, it will not only cause the battery temperature to rise, affecting the battery's performance and lifespan, but may also cause safety problems, such as thermal runaway or even explosion. By adopting the above technical solution, including the main casing, heat dissipation end caps are installed at the openings at both ends of the main casing. The heat dissipation end caps include a base and a flow guide cover. Flow guide holes are opened through the four side walls of the base. The fan module is installed inside the main casing.

[0008] When the battery generates a lot of heat during operation, this heat is first transferred to the main casing of the battery through the battery's own thermal conduction. In order to effectively dissipate heat, the fan module inside the main casing is activated. The fan module starts working and generates airflow. The airflow generated by the fan module enters the main casing through the fan slots on the main casing. The airflow flows inside the main casing, exchanges heat with the battery and the inner wall of the main casing, and absorbs heat. The airflow then flows to the heat dissipation end caps at both ends of the main casing. After passing through the base and the airflow guide cover, the airflow has absorbed some of the heat from the battery and the main casing and is effectively guided out of the battery casing and discharged into the external environment. As the battery continues to operate, the above heat dissipation process is repeated continuously to ensure that the battery is kept within a relatively stable temperature range.

[0009] Through the design of heat dissipation end caps and fan modules, especially the hollow structure of the base and the air guide cover, as well as the air guide holes on the four side walls of the base, a smooth path for airflow is provided. This allows for sufficient heat exchange with the battery and the inner wall of the main casing, effectively absorbing the heat generated by the battery and achieving rapid heat dissipation. The battery temperature is effectively controlled, which helps to extend the battery's lifespan and improve its performance stability. Furthermore, the design of the heat dissipation end caps, fan modules, and fan slots is relatively simple, easy to manufacture and assemble, and can adapt to the heat dissipation needs of different battery models and specifications.

[0010] Optionally, the base is provided with a plug-in flange, the plug-in flange is arranged along the edge of the base, and the main housing is provided with a plug-in groove for engaging with the plug-in flange.

[0011] By adopting the above technical solution, the insertion flange is integrally formed on the base, and the base is installed in the insertion groove of the main housing through the insertion flange. With the setting of the insertion flange and the insertion groove, the installation is convenient and easy to maintain, reducing maintenance time and cost. Simply align the insertion flange with the insertion groove on the main housing and insert it to complete the installation. No complicated fixing steps or tools are required. At the same time, the fit between the insertion flange and the insertion groove is stable, effectively preventing the heat dissipation end cover from loosening or falling off during use.

[0012] Optionally, sealing gaskets are provided at both ends of the main housing, the sealing gaskets are arranged at the corresponding insertion grooves, and the main housing is provided with an assembly groove for installing the sealing gaskets.

[0013] By adopting the above technical solution, the sealing gasket is installed in the assembly groove of the main housing; the setting of the sealing gasket and the assembly groove helps to enhance the sealing performance, effectively preventing dust, moisture, salt and other impurities in the external environment from entering the battery casing, protecting the battery and its internal circuits from pollution and corrosion, and improving safety.

[0014] Optionally, the airflow guide cover is provided with a plurality of fractal airflow guide plates for dispersing airflow, and the plurality of fractal airflow guide plates are arranged in a spiral arrangement inside the airflow guide cover.

[0015] By adopting the above technical solution, the fractal airflow guide plate is installed inside the airflow guide cover. Through the setting of the fractal airflow guide plate, the airflow can be more effectively dispersed and guided, making the airflow more evenly distributed inside the airflow guide cover. It can effectively exchange heat with the battery and the inner wall of the main casing, improving heat dissipation efficiency. At the same time, the fractal airflow guide plate increases the contact area between the airflow and the inside of the battery casing, thereby improving the efficiency of heat exchange and helping to dissipate the heat generated by the battery to the external environment more quickly, maintaining the stability of the battery temperature.

[0016] Optionally, each of the fractal guide plates has a plurality of guide grooves on its surface, and the guide grooves on the same fractal guide plate are arranged in an alternating V-shape.

[0017] By adopting the above technical solution, the flow guide grooves are formed on the surface of the fractal flow guide plate, and the flow guide grooves are arranged in an alternating V-shape. Through the setting of the flow guide grooves, the alternating V-shaped flow guide grooves can effectively guide the airflow to flow along a specific path, so that the airflow passes through the flow guide cover more orderly, further improving the heat exchange efficiency, thereby dissipating the heat generated by the battery more effectively and improving the heat dissipation efficiency. At the same time, the alternating V-shaped flow guide grooves can reduce the resistance of the airflow during the flow process, so that the airflow passes through the flow guide cover more smoothly.

[0018] Optionally, the V-shaped opening of the flow guide groove is aligned with the airflow path, and the spacing between adjacent V-shaped openings is 5-15 mm.

[0019] By adopting the above technical solution, the V-shaped opening direction of the flow guide groove is consistent with the airflow path, and the distance between adjacent V-shaped openings is 5-15mm. By setting the opening direction and spacing of the flow guide groove, the V-shaped opening direction of the flow guide groove is consistent with the airflow path, ensuring that the airflow flows smoothly along the guiding direction of the groove, reducing airflow turbulence and eddy phenomena, which helps to improve heat exchange efficiency. At the same time, the distance between adjacent V-shaped openings is within the range of 5-15mm, ensuring that the airflow is more evenly distributed inside the flow guide cover.

[0020] Optionally, the number of fan modules is multiple sets, and the multiple sets of fan modules are arranged diagonally inside the main housing, with the number of fan slots matching the number of fan modules.

[0021] By adopting the above technical solution, there are multiple fan modules arranged diagonally. By setting the number and arrangement of the fan modules, the simultaneous operation of multiple fan modules can significantly increase the airflow speed, accelerate the heat exchange process inside the battery casing, and improve heat dissipation efficiency. At the same time, the diagonally arranged fan modules can form a more uniform airflow distribution, ensuring that all parts of the battery casing can be effectively cooled.

[0022] Optionally, a plurality of auxiliary heat dissipation holes are provided through the top of the main housing, and the plurality of auxiliary heat dissipation holes are sequentially and spaced apart on the surface of the main housing.

[0023] By adopting the above technical solution, several auxiliary heat dissipation holes are opened on the top of the main casing. The auxiliary heat dissipation holes increase the heat dissipation area of ​​the battery casing, allowing heat to be dissipated to the external environment more quickly. Hot air can be quickly discharged through the auxiliary heat dissipation holes, thereby improving heat dissipation efficiency. At the same time, it helps to avoid the occurrence of local overheating and makes the temperature distribution inside the battery casing more uniform.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] Through the design of heat dissipation end caps, fan modules, etc., the design of the heat dissipation end caps, especially the hollow structure of the base and the air guide cover, as well as the air guide holes on the four side walls of the base, provides a smooth path for airflow, allowing for sufficient heat exchange with the battery and the inner wall of the main casing. This effectively absorbs the heat generated by the battery, achieves rapid heat dissipation, and effectively controls the battery temperature, which helps to extend the battery's lifespan and improve the battery's performance stability. In addition, the design of the heat dissipation end caps, fan modules, and fan slots is relatively simple, easy to manufacture and assemble, and can adapt to the heat dissipation requirements of different models and specifications of batteries.

[0026] By setting up the fractal air guide plate, the air guide plate can more effectively disperse and guide the airflow, making the airflow more evenly distributed inside the air guide cover. It can effectively exchange heat with the battery and the inner wall of the main casing, improving heat dissipation efficiency. At the same time, the fractal air guide plate increases the contact area between the airflow and the inside of the battery casing, thereby improving the efficiency of heat exchange and helping to dissipate the heat generated by the battery to the external environment more quickly, maintaining the stability of the battery temperature.

[0027] By adding auxiliary heat dissipation holes, the heat dissipation area of ​​the battery casing is increased, allowing heat to dissipate to the external environment more quickly. Hot air can be quickly discharged through the auxiliary heat dissipation holes, thereby improving heat dissipation efficiency. At the same time, it helps to avoid local overheating and makes the temperature distribution inside the battery casing more uniform. Attached Figure Description

[0028] Figure 1This is a schematic diagram of the structure of a heat-dissipating new energy vehicle battery casing in an embodiment of this application.

[0029] Figure 2 This is a cross-sectional view of a heat-dissipating new energy vehicle battery casing according to an embodiment of this application.

[0030] Figure 3 yes Figure 2 Enlarged view of part A.

[0031] Figure 4 This is a schematic diagram illustrating the structure of the fractal guide plate in the embodiments of this application.

[0032] Explanation of reference numerals in the attached drawings: 1. Main housing; 2. Heat dissipation end cap; 21. Base; 22. Airflow guide cover; 3. Airflow guide hole; 4. Fan module; 5. Fan slot; 6. Insertion flange; 7. Insertion groove; 8. Sealing gasket; 9. Assembly slot; 10. Fractal airflow guide plate; 101. Airflow guide groove; 11. Auxiliary heat dissipation hole. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0034] This application discloses a heat-dissipating battery casing for new energy vehicles. (Refer to...) Figure 1 The heat dissipation type new energy vehicle battery casing includes a main casing 1. The main casing 1 has a hollow structure inside. In this embodiment, the battery module is installed inside the main casing 1. The two ends of the main casing 1 are open. Heat dissipation end caps 2 are installed at both ends of the main casing 1. The two heat dissipation end caps 2 cover the openings at both ends of the main casing 1.

[0035] Reference Figure 1 and Figure 2 A fan module 4 is installed inside the main housing 1. In this embodiment, there are multiple sets of fan modules 4, preferably two fan modules 4 arranged diagonally inside the main housing 1. At the same time, the main housing 1 has fan slots 5 for airflow. The fan slots 5 are located at the air inlet end of the fan module 4, and the air outlet end of the fan module 4 faces the inside of the main housing 1. The number of fan slots 5 is the same as the number of fan modules 4. The fan module 4 can be equipped with a corresponding power supply. The simultaneous operation of multiple sets of fan modules 4 can significantly increase the airflow speed, accelerate the heat exchange process inside the battery casing, and improve heat dissipation efficiency. At the same time, the diagonally arranged fan modules 4 can form a more uniform airflow distribution, ensuring that all parts of the battery casing can be effectively cooled.

[0036] Reference Figure 1The top of the main housing 1 is provided with several auxiliary heat dissipation holes 11, which are sequentially and spaced apart on the surface of the main housing 1. The auxiliary heat dissipation increases the heat dissipation area of ​​the battery casing, allowing heat to be dissipated to the external environment more quickly. Hot air can be quickly discharged through the auxiliary heat dissipation holes 11, thereby improving heat dissipation efficiency. At the same time, it helps to avoid the occurrence of local overheating and makes the temperature distribution inside the battery casing more uniform.

[0037] Reference Figure 1 Each heat dissipation end cover 2 includes a base 21 and a flow guide cover 22. The base 21 and the flow guide cover 22 are both hollow structures. The base 21 and the flow guide cover 22 are both connected to the main housing 1. The base 21 is located on the side of the flow guide cover 22 that is close to the main housing 1. In this embodiment, several flow guide holes 3 are opened through the four side walls of the base 21; providing a smooth path for airflow and allowing sufficient heat exchange with the battery and the inner wall of the main housing 1, effectively absorbing the heat generated by the battery.

[0038] Reference Figure 2 and Figure 3 The base 21 has an integrally formed insertion flange 6, which is arranged along the edge of the base 21. The main housing 1 has an insertion groove 7, and the insertion flange 6 is inserted and fixed in the insertion groove 7. The installation is convenient and easy to maintain, reducing maintenance time and cost. The installation can be completed simply by aligning the insertion flange 6 with the insertion groove 7 on the main housing 1 and inserting it. No complicated fixing steps or tools are required. At the same time, the fit between the insertion flange 6 and the insertion groove 7 is stable, effectively preventing the heat dissipation end cover 2 from loosening or falling off during use.

[0039] Reference Figure 2 and Figure 3 Both ends of the main housing 1 are equipped with sealing gaskets 8. In this embodiment, the sealing gaskets 8 are made of rubber. The sealing gaskets 8 are arranged at the connection between the corresponding insertion flange 6 and the insertion groove 7. The two ends of the main housing 1 are respectively provided with assembly grooves 9, and the sealing gaskets 8 are installed in the assembly grooves 9. This helps to enhance the sealing performance and can effectively prevent dust, moisture, salt and other impurities in the external environment from entering the battery casing, protecting the battery and its internal circuits from pollution and corrosion, and improving safety.

[0040] Reference Figure 2 and Figure 4A plurality of fractal guide plates 10 are installed inside the flow guide cover 22. The fractal guide plates 10 are arranged in a spiral pattern inside the flow guide cover 22. Each fractal guide plate 10 has a plurality of flow guide grooves 101 on its surface. In this embodiment, the flow guide grooves 101 on the same fractal guide plate 10 are arranged in an alternating V-shape. The fractal guide plates 10 can more effectively disperse and guide the airflow, making the airflow more evenly distributed inside the flow guide cover 22. It can effectively exchange heat with the battery and the inner wall of the main housing 1, improving the heat dissipation efficiency. At the same time, the fractal guide plates 10 increase the contact area between the airflow and the inside of the battery housing, thereby improving the heat exchange efficiency and helping to dissipate the heat generated by the battery to the external environment more quickly, maintaining the stability of the battery temperature.

[0041] Reference Figure 4 In this embodiment, the V-shaped opening of the flow guide groove 101 is aligned with the airflow path, and the spacing between adjacent V-shaped openings is 5-15mm. The alignment of the V-shaped opening of the flow guide groove 101 with the airflow path ensures that the airflow flows smoothly along the guiding direction of the groove, reduces airflow turbulence and eddy currents, and helps to improve heat exchange efficiency. At the same time, the spacing between adjacent V-shaped openings is within the range of 5-15mm, ensuring that the airflow is more evenly distributed inside the flow guide cover 22.

[0042] The implementation principle of a heat-dissipating new energy vehicle battery casing according to an embodiment of this application is as follows: When the battery generates a large amount of heat during operation, this heat is first transferred to the main casing 1 of the battery casing through the thermal conduction of the battery itself. In order to effectively dissipate heat, the fan module 4 inside the main casing 1 is activated. The fan module 4 starts to work and generates airflow. The airflow generated by the fan module 4 enters the main casing 1 through the fan slot 5 opened on the main casing 1. The airflow flows inside the main casing 1 and exchanges heat with the battery and the inner wall of the main casing 1, absorbing heat. The airflow then flows to the heat dissipation end caps 2 at both ends of the main casing 1. After passing through the base 21 and the fractal guide plate 10 of the guide cover 22, the airflow has absorbed part of the heat of the battery and the main casing 1 and is effectively guided out of the battery casing and discharged into the external environment. At the same time, some hot air can be quickly discharged through the auxiliary heat dissipation holes 11. As the battery continues to work, the above heat dissipation process is repeated continuously to ensure that the battery is kept within a relatively stable temperature range.

[0043] Through the design of the heat dissipation end cap 2, fan module 4, etc., the design of the heat dissipation end cap 2, especially the hollow structure of the base 21 and the air guide cover 22, as well as the air guide holes 3 on the four side walls of the base 21, provides a smooth path for airflow, allowing for sufficient heat exchange with the battery and the inner wall of the main casing 1. This effectively absorbs the heat generated by the battery, achieves rapid heat dissipation, and effectively controls the battery temperature, which helps to extend the battery's lifespan and improve its performance stability. Furthermore, the design of the heat dissipation end cap 2, fan module 4, and fan slot 5 is relatively simple, easy to manufacture and assemble, and can adapt to the heat dissipation needs of batteries of different models and specifications.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A heat-dissipating battery casing for new energy vehicles, comprising a main casing, characterized in that: The main housing has open ends, and each end of the main housing is provided with a heat dissipation end cover. Each heat dissipation end cover includes a base and a flow guide cover. The base is arranged on the side of the flow guide cover close to the main housing. Both the base and the flow guide cover are hollow structures and are connected to the main housing. The four side walls of the base are provided with flow guide holes. A fan module is provided inside the main housing, and a fan slot for airflow is provided on the main housing.

2. The heat-dissipating battery casing for new energy vehicles according to claim 1, characterized in that: The base is provided with a plug-in flange, which is arranged along the edge of the base, and the main housing is provided with a plug-in groove for engaging with the plug-in flange.

3. The heat-dissipating battery casing for new energy vehicles according to claim 2, characterized in that: Both ends of the main housing are provided with sealing gaskets, which are arranged at the corresponding insertion grooves. The main housing is provided with an assembly groove for installing the sealing gaskets.

4. The heat-dissipating battery casing for new energy vehicles according to claim 1, characterized in that: The airflow guide cover is provided with a number of fractal airflow guide plates for dispersing airflow, and the number of fractal airflow guide plates are arranged in a spiral arrangement inside the airflow guide cover.

5. A heat-dissipating new energy vehicle battery casing according to claim 4, characterized in that: Each of the fractal guide plates has several guide grooves on its surface, and the guide grooves on the same fractal guide plate are arranged in an alternating V-shape.

6. The heat-dissipating battery casing for new energy vehicles according to claim 5, characterized in that: The V-shaped opening of the flow guide groove is aligned with the airflow path, and the distance between adjacent V-shaped openings is 5-15mm.

7. A heat-dissipating new energy vehicle battery casing according to claim 1, characterized in that: The number of fan modules is multiple, and the multiple sets of fan modules are arranged diagonally inside the main housing. The number of fan slots is the same as the number of fan modules.

8. A heat-dissipating new energy vehicle battery casing according to claim 7, characterized in that: The top of the main housing has several auxiliary heat dissipation holes, which are sequentially and spaced apart on the surface of the main housing.

Images