Air-cooled battery compartment and vehicle

Abstract

The utility model provides an air-cooled battery compartment and a vehicle, and the air-cooled battery compartment comprises a battery compartment which is provided with a first accommodating cavity; the battery box assemblies are arranged in the first containing cavity, the number of the battery box assemblies is at least one, the battery box assemblies are provided with ventilation air ducts, and air inlets and air outlets of the ventilation air ducts are communicated with the first containing cavity; at least part of the in-bin air duct assembly is arranged in the first containing cavity, the in-bin air duct assembly is connected with the battery box assembly, an airflow buffering area is formed between the battery box assembly and the in-bin air duct assembly, and the air outlet communicates with the in-bin air duct assembly through the airflow buffering area. By arranging the in-bin air duct assembly, cold air in the battery bin and hot air in the battery box assembly are mixed through the airflow buffer area and then enter the in-bin air duct assembly, and the mixed air is discharged out of the battery bin through the in-bin air duct assembly, so that the temperature difference between the battery bin and the battery box assembly is reduced; the problem that heat in the battery box cannot be dissipated smoothly is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery compartment technical field, specifically, relate to a kind of air-cooled battery compartment and vehicle. BACKGROUND

[0002] Battery compartment heat dissipation design includes battery box self heat dissipation design and battery compartment heat dissipation design two parts, battery box heat dissipation design ensures that heat in battery box can be dissipated, while battery compartment needs to provide friendly environment to ensure that battery box can be successfully heat dissipated, and the heat dissipated can be successfully dissipated to external environment.

[0003] At present, due to the air temperature rise inside battery compartment makes the pressure of battery box outlet area air pressure rise formed to the heat dissipation fan outlet of battery box, thereby causing the heat in battery box cannot be successfully heat dissipated.

[0004] For the above problems, there is no effective solution at present. INVENTION CONTENTS

[0005] The utility model discloses a kind of air-cooled battery compartment and vehicle, to solve the heat in the battery box of prior art cannot be successfully heat dissipated problem.

[0006] To achieve the above purpose, according to an aspect of the utility model, an air-cooled battery compartment is provided, comprising: battery compartment, battery compartment has first accommodating cavity;Battery box assembly, battery box assembly is arranged in first accommodating cavity, battery box assembly is at least one, battery box assembly has ventilation air duct, the air inlet and air outlet of ventilation air duct are communicated with first accommodating cavity;In-cabin air duct assembly, at least part of in-cabin air duct assembly is arranged in first accommodating cavity, in-cabin air duct assembly is connected with battery box assembly, and air flow buffer area is formed between battery box assembly and in-cabin air duct assembly, and air outlet is communicated with in-cabin air duct assembly through air flow buffer area.

[0007] Further, in-cabin air duct assembly includes air extraction passage, air extraction passage has air inlet end and air outlet end, air extraction passage is provided with air inlet channel communicated with air flow buffer area on the side wall, air inlet channel is provided with heat dissipation fan, heat dissipation fan is used to guide flow to air extraction passage in air flow buffer area.

[0008] Further, air extraction passage is formed with windward face on the side wall, windward face is oppositely arranged with heat dissipation fan, the plane where windward face is located is arranged with angle with the axial direction of heat dissipation fan, windward face is extendedly arranged along the direction of air inlet end to air outlet end.

[0009] Further, the air inlet channels are multiple, and the multiple air inlet channels are arranged on opposite side walls of the air exhaust channels respectively, each air exhaust channel is provided with one battery box assembly, and at least one side wall provided with an air inlet channel is provided with one windward surface.

[0010] Further, the side wall provided with the air inlet channel is connected to the windward surface through a connecting side wall, wherein the maximum inner diameter of the heat dissipation fan is L, and the width of the connecting side wall is W, and W≥0.3L.

[0011] Further, the two side walls provided with the air inlet channel are both provided with one windward surface, and the two windward surfaces are located between the two side walls.

[0012] Further, the airflow flowing into the air exhaust channel from the air inlet channel has the same flow direction after being guided by the windward surface.

[0013] Further, the air exhaust channels are multiple, the battery box assemblies are multiple, the multiple air exhaust channels and the multiple battery box assemblies are alternately arranged, and the alternately arranged air exhaust channels and battery box assemblies are sequentially connected,

[0014] Further, the flow area of at least one air exhaust channel gradually increases from the air inlet end of the air exhaust channel to the air outlet end of the air exhaust channel.

[0015] Further, the in-warehouse air duct assembly further comprises: a louver, and the louver is arranged outside the air outlet end.

[0016] Further, the in-warehouse air duct assembly further comprises: an air exhaust fan, and the air exhaust fan is arranged outside the air outlet end, and the louver is arranged outside the air outlet of the air exhaust fan.

[0017] Further, the battery box assembly comprises: a battery box, the battery box has a ventilation air duct; a cell warehouse, the cell warehouse is arranged in the ventilation air duct and is arranged in the third preset direction, and the cell warehouse is connected to the battery box assembly, the cell warehouse is provided with a second accommodating cavity, and the cell warehouse is at least one; and a cell, the cell is at least one, and the cell is arranged in the second accommodating cavity.

[0018] Further, the battery box assembly further comprises: multiple cooling fins, and the multiple cooling fins are arranged on both sides of the cell warehouse in an array, and a separation space is formed between adjacent two cooling fins.

[0019] A vehicle comprises a vehicle body and the air-cooled battery warehouse.

[0020] The utility model discloses a technical scheme, through setting up the air duct assembly in the warehouse, the cold air in the battery warehouse and the hot air of battery box assembly are mixed after entering the air duct assembly in the warehouse through the airflow buffer area, and the mixed air is discharged outside the battery warehouse through the air duct assembly in the warehouse, reduces the temperature difference between the battery warehouse and battery box assembly, and the technical problem that the heat in the battery box of prior art cannot be radiated smoothly is solved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The structure schematic diagram of the first embodiment of the air-cooled battery warehouse according to the utility model is shown.

[0022] Figure 2 The structure schematic diagram of the second embodiment of the air-cooled battery warehouse according to the utility model is shown.

[0023] Figure 3 The air flow direction schematic diagram in the second embodiment of the air-cooled battery warehouse according to the utility model is shown.

[0024] Figure 4 The structure schematic diagram of the third embodiment of the air-cooled battery warehouse according to the utility model is shown.

[0025] Figure 5 The structure schematic diagram of the fourth embodiment of the air-cooled battery warehouse according to the utility model is shown.

[0026] Figure 6 The side view of the fourth embodiment of the air-cooled battery warehouse according to the utility model is shown.

[0027] Figure 7 The structure schematic diagram of the fifth embodiment of the air-cooled battery warehouse according to the utility model is shown.

[0028] Figure 8 The structure schematic diagram of the sixth embodiment of the air-cooled battery warehouse according to the utility model is shown.

[0029] Figure 9 The structure schematic diagram of the seventh embodiment of the air-cooled battery warehouse according to the utility model is shown.

[0030] Figure 10 The structure schematic diagram of the eighth embodiment of the air-cooled battery warehouse according to the utility model is shown.

[0031] Figure 11 The structure schematic diagram of the eighth embodiment of the air-cooled battery warehouse according to the utility model is shown. Figure 10 The cross-sectional view at A of the eighth embodiment of the air-cooled battery warehouse according to the utility model is shown.

[0032] Among them, the above drawing includes the following figure marks:

[0033] 1, battery box assembly;

[0034] 2. Inlet air duct assembly in the bin;

[0035] 11. Ventilation air duct;

[0036] 12. Air flow buffer area;

[0037] 13. Radiating fan;

[0038] 14. Electric core;

[0039] 15. Cooling fin;

[0040] 151. Separated space;

[0041] 16. Battery box;

[0042] 17. Electric core bin;

[0043] 21. Exhaust air passage;

[0044] 211. Windward surface;

[0045] 22. Connecting side wall;

[0046] 23. Louver;

[0047] 24. Exhaust fan. DETAILED DESCRIPTION

[0048] It should be noted that the embodiments and features in the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0049] It should be noted that the terms used herein are only for the purpose of describing the specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a presence of a feature, step, operation, device, component and / or combination thereof.

[0050] It is to be understood that the terminology "first", "second" and the like used throughout this specification and claims does not embody preferential or ordinal, but is used to distinguish a number of similar objects. It is to be understood that the terminology so used is interchangeable to the extent that the embodiments of the present application described herein are capable of functioning with the opposite sequence or order, or with the components thereof, being interchanged or reversed. Also, the terms "comprise", "comprising", "include", "including", and the like, are typically used throughout this specification and claims to mean "including but not limited to", and are intended to be construed as such.

[0051] In the current booming new energy technology, the stability and safety of the performance of the battery system, as the core power source of many devices and vehicles, are of great importance. The battery compartment heat dissipation design is a key link to ensure the good operation of the battery system. It mainly covers two important components, namely the battery box heat dissipation design and the battery compartment heat dissipation design.

[0052] The battery box heat dissipation design has a very critical mission, its main task is to ensure that the heat generated inside the battery box during the battery charging and discharging process can be efficiently and smoothly dissipated. Because the battery will continuously generate heat during operation, if these heat continuously accumulates in the battery box, it will cause the internal temperature of the battery box to continuously rise, thereby affecting the performance and life of the battery, and even may cause safety hazards.

[0053] However, relying solely on the heat dissipation design of the battery box is far from enough, the cooperation of the battery compartment is also needed. The battery compartment needs to provide a friendly environment for the heat dissipation of the battery box, which means that the system needs to be considered and designed from the overall layout, air flow organization and other aspects to ensure that the battery box can smoothly dissipate heat. At the same time, the heat dissipated by the battery box cannot be accumulated inside the battery compartment, but can be smoothly dissipated to the environment outside the system, so as to maintain the thermal balance of the entire battery system and ensure its stable and reliable operation.

[0054] In view of the deficiencies in the prior art, the utility model provides a forced air cooling battery compartment to solve the problem that the heat in the battery box cannot be smoothly dissipated in the prior art.

[0055] In combination with Figure 1As shown, according to the specific embodiments of the present application, a forced air battery compartment is provided, comprising: a battery compartment, a battery box assembly 1 and an internal compartment air duct assembly 2, the battery compartment has a first accommodating cavity, the battery box assembly is arranged in the first accommodating cavity, the battery box assembly 1 is at least one, the battery box assembly 1 has a ventilation air duct 11, the air inlet and air outlet of the ventilation air duct 11 are communicated with the first accommodating cavity. At least part of the internal compartment air duct assembly 2 is arranged in the first accommodating cavity, the internal compartment air duct assembly 2 is connected with the battery box assembly 1, and the air flow buffer area 12 is formed between the battery box assembly 1 and the internal compartment air duct assembly 2, and the air outlet is communicated with the internal compartment air duct assembly 2 through the air flow buffer area 12. By installing the internal compartment air duct assembly 2 in the first accommodating cavity, the internal compartment air duct assembly 2 is connected with the battery box assembly 1, and the air flow buffer area 12 is formed between the battery box assembly 1 and the internal compartment air duct assembly 2, and the air outlet is communicated with the internal compartment air duct assembly 2 through the air flow buffer area 12, the cold air in the battery compartment and the hot air of the battery box assembly 1 are mixed in the air flow buffer area 12, and then discharged from the battery compartment through the internal compartment air duct assembly 2, which solves the problem that the heat in the battery box cannot be dissipated smoothly in the prior art.

[0056] In this embodiment, the internal compartment air duct assembly 2 includes an air extraction channel 21, the air extraction channel 21 has an air inlet end and an air outlet end, and the air extraction channel 21 is provided with an air inlet channel communicated with the air flow buffer area 12 on the side wall, and the air inlet channel is provided with a heat dissipation fan 13, and the heat dissipation fan is used for guiding the air flow of the air flow buffer area 12 into the air extraction channel 21. By designing the heat dissipation fan 13 to guide the air flow of the air flow buffer area 12 into the air extraction channel 21, the heat can be quickly and effectively removed. The existence of the air flow buffer area 12 can make the air flow buffer and stabilize to a certain extent before entering the air extraction channel 21, avoiding the adverse effects of sudden impact of air flow on the air extraction channel 21. This stable air flow supply and efficient flow guiding mode ensures that the entire internal compartment air duct assembly 2 can continuously and stably play a heat dissipation role, providing reliable protection for the normal operation of the equipment.

[0057] Further, the side wall of the air suction channel 21 is formed with a windward surface 211 opposite to the heat dissipation fan 13. The plane of the windward surface 211 is arranged at an angle with the axial direction of the heat dissipation fan 13, and the windward surface 211 extends from the air inlet end to the air outlet end. The windward surface 211 extends from the air inlet end to the air outlet end, which is consistent with the airflow direction of the air duct as a whole, further perfecting the structure of the air duct. In the process of guiding the airflow, it can play a certain role in rectifying and stabilizing the incoming airflow. When the airflow hits the windward surface 211, it gradually transitions and stably enters the air duct along the extension direction, reducing the turbulence and vortex phenomena that may occur at the air duct inlet, ensuring the stability of the airflow in the air duct, providing stable airflow conditions for the subsequent heat dissipation process, and helping to maintain the efficient and stable operation of the entire heat dissipation system. As shown in Figure 1 The angle between the plane of the windward surface 211 and the axial direction of the heat dissipation fan 13 is 45°, which can make the hot air discharged from the battery box assembly 1 collide with the windward surface 211 and form an upward mode instead of being reflected to the fan, which is more conducive to the exhaust of the heat dissipation fan 13.

[0058] In an exemplary embodiment, the air inlet channel is multiple, and the multiple air inlet channels are arranged on the opposite side walls of the air suction channel 21, and each air suction channel 21 is correspondingly provided with one battery box assembly 1. At least one side wall provided with an air inlet channel is correspondingly provided with a windward surface. The multiple air inlet channels are arranged on the opposite side walls of the air suction channel 21, and each battery box assembly 1 can more evenly obtain cooling airflow, and effectively improve the heat dissipation effect of the air duct assembly 2 in the warehouse, and ensure the stable operation of the battery system. In actual application, the position and number of windward surfaces can be flexibly adjusted according to different battery box layouts and warehouse space structures.

[0059] Further, the side wall provided with the air inlet channel is connected with the windward surface 211 through a connecting side wall 22, wherein the maximum inner diameter of the heat dissipation fan 13 is L, and the width of the connecting side wall 22 is W, and W≥0.3L. The width of the connecting side wall 22 is greater than the maximum inner diameter of the heat dissipation fan 13, which reduces the resistance of the exhaust air of the heat dissipation fan 13 and prevents the air from being reflected. In an exemplary embodiment, the capacity of the air suction channel 21 is greater than 10% of the exhaust capacity of the battery box assembly 1, which further ensures that the exhaust capacity of the battery box assembly 1 can be completely accommodated by the in-warehouse air duct assembly 2. In another exemplary embodiment, the projection height of the windward surface 211 in the direction of the heat dissipation fan 13 is equal to the maximum height of the heat dissipation fan 13, the connecting side wall 22 is flush with the lowest point of the heat dissipation fan 13, the air duct top surface arranged opposite to the connecting side wall 22 is connected with the connecting side wall 22, and the air duct top surface is higher than or flush with the highest point of the heat dissipation fan 13, which further ensures that the hot air blown out by the heat dissipation fan 13 can be completely reflected upward by the windward surface 211 and not reflected back to the fan, and the connecting side wall 22 is flush with the lowest point of the heat dissipation fan 13, which makes the air flow at the bottom of the heat dissipation fan 13 smooth.

[0060] As shown in Figure 2 , two side walls provided with air inlet channels are each provided with a windward surface 211, and the two windward surfaces 211 are located between the two side walls. That is, when the size of the battery compartment can accommodate two battery box assemblies 1 arranged side by side, the in-warehouse air duct assembly 2 is vertically symmetrical with the windward surface 211, and the air duct assembly is vertically symmetrical with the windward surface 211, which gives the entire in-warehouse structure good symmetry. This symmetrical structure not only looks neat, but more importantly, it has advantages in mechanics and airflow dynamics. From the perspective of mechanics, a symmetrical structure can make the stress distribution of the entire in-warehouse structure more uniform, reducing the risk of structural deformation or damage caused by uneven local stress; from the perspective of airflow dynamics, a symmetrical air duct design is beneficial to maintaining a stable airflow field, avoiding airflow turbulence, and ensuring the consistency and stability of the heat dissipation effect.

[0061] Further, the airflow flowing into the air suction channel 21 from the air inlet channel has the same flow direction after being guided by each windward surface 211, as shown in Figure 3 , F represents the wind, and the arrow represents the wind direction. The same flow direction helps to guide the airflow to pass through the air suction channel in an orderly manner, reduces direct collision and conflict between airflows, makes the airflow flow more smoothly in the channel, reduces airflow resistance, and thus reduces energy loss.

[0062] In one exemplary embodiment, when the air suction passages 21 are multiple and the battery box assemblies 1 are also multiple, the multiple air suction passages 21 are arranged alternately with the multiple battery box assemblies 1, and the alternately arranged air suction passages and the battery box assemblies 1 are arranged in sequence and in communication. When the battery box works and generates heat, the heat can be quickly transferred to the air suction passages 21 through the communication part, and is quickly taken away by the flowing air. Compared with the traditional layout mode, the heat loss in the transfer process is smaller, the heat dissipation speed is faster, the battery box can work more effectively in the appropriate temperature range, and the stability of the battery performance is guaranteed.

[0063] As shown in FIG. 1, the multiple air suction passages 21 are arranged alternately with the single row of multiple battery box assemblies 1, and the alternately arranged air suction passages and the battery box assemblies 1 are arranged in sequence and in communication. Figure 4 As shown in FIG. 2, the multiple air suction passages 21 are arranged alternately with the symmetric double rows of multiple battery box assemblies 1, and the alternately arranged air suction passages and the battery box assemblies 1 are arranged in sequence and in communication. Figure 5

[0064] Further, as shown in FIG. 3, the filtering area of at least one air suction passage 21 is gradually increased from the air inlet end of the air suction passage 21 to the air outlet end of the air suction passage 21. The air suction passage 21 is gradually increased in height in the flow direction, and the air duct cross-sectional area is increased. Under the premise of the same air volume, the internal pressure of the air duct will be reduced, which is beneficial to the flow of air in the air duct to the outlet. And through the variable cross-section air duct design, the temperature distribution of the flowing air in the air duct is uniform, and the local temperature rise in the air duct caused by the local increase of the heat dissipation of the battery box will not be caused. The exhaust volume of the battery box per unit time is equal to the exhaust volume of the air duct, and the local pressure increase in the air duct will not be caused. In one exemplary embodiment, the air suction passage 21 is gradually increased in height in the flow direction, and the air duct cross-sectional area is increased. The calculation formula of the air duct cross-sectional area increase amount is as follows: Figure 6 S 增 = CFM 抽 / L(1)

[0065]

[0066] Wherein: S 增 is the air duct cross-sectional area increase amount, CFM 抽 is the maximum air volume under the static pressure of the air-cooled battery box 0, and L is the width of the heat dissipation fan.

[0067] In one exemplary embodiment, as shown in FIG. 4, the filtering area of at least one air suction passage 21 is gradually increased from the air inlet end of the air suction passage 21 to the air outlet end of the air suction passage 21. The air suction passage 21 is gradually increased in height in the flow direction, and the air duct cross-sectional area is increased. Under the premise of the same air volume, the internal pressure of the air duct will be reduced, which is beneficial to the flow of air in the air duct to the outlet. And through the variable cross-section air duct design, the temperature distribution of the flowing air in the air duct is uniform, and the local temperature rise in the air duct caused by the local increase of the heat dissipation of the battery box will not be caused. The exhaust volume of the battery box per unit time is equal to the exhaust volume of the air duct, and the local pressure increase in the air duct will not be caused. In one exemplary embodiment, the air suction passage 21 is gradually increased in height in the flow direction, and the air duct cross-sectional area is increased. The calculation formula of the air duct cross-sectional area increase amount is as follows: Figure 7 ​​As shown, the air duct assembly 2 in the bin also includes louvers 23 installed on the outside of the air outlet end. The louvers 23 have an adjustable blade structure, which can flexibly adjust the angle of the blades according to actual needs. When the device generates a large amount of heat and needs to enhance heat dissipation, the louver 23 blade angle can be adjusted to increase the ventilation area of the air outlet end of the air duct, thereby increasing the ventilation volume and enhancing the heat dissipation effect. When the device heat generation is relatively stable and does not require excessive ventilation volume, the blade angle can be adjusted to reduce the ventilation volume, thereby avoiding unnecessary energy consumption and excessive entry of foreign matter from the outside. In an exemplary embodiment, the louver bin is located on both sides or the tail of the vehicle body, and the air outlet cross-sectional area of the louver 23 in contact with the outside is 2 times the total outlet area of the heat dissipation fan 13. During vehicle operation, the air flow rate on both sides of the vehicle is affected by the friction of the vehicle body contact surface, and the flow rate outside the contact surface is large. Therefore, a small vacuum can be formed in the contact part of the vehicle body and the outside air, which accelerates the air exhaust in the battery bin. The large air outlet area of the louver ensures that the fan exhaust is not blocked.

[0068] Further, as shown in Figure 8 The air duct assembly 2 in the bin also includes an exhaust fan 24, which is arranged on the outside of the air outlet end, and the louver 23 is arranged on the outside of the air outlet of the exhaust fan 24. The exhaust fan 24 is arranged on the outside of the air outlet end, which can fully utilize its strong suction to quickly exhaust the hot air in the exhaust channel 21. Further accelerate air flow, effectively reduce the temperature in the bin, and provide a stable heat dissipation environment for the battery box assembly and other devices to ensure that the performance of the device is not affected by high temperature. Moreover, the louver 23 is located on the outside of the air outlet of the exhaust fan 24, which not only plays its original functions of dust prevention, insect prevention, rain prevention and ventilation adjustment, but also protects the fan when it is working. When the exhaust fan 24 is running at high speed, the louver 23 can block foreign matter from being sucked into the fan, thereby preventing damage to the fan blades or affecting the normal operation of the fan. At the same time, the adjustment function of the louver is still effective, and the ventilation volume can be adjusted according to the actual heat dissipation needs during the operation of the fan, thereby further optimizing the heat dissipation effect and realizing the perfect combination of heat dissipation and protection. In an exemplary embodiment, the 0 static pressure flow of the exhaust fan 24 is greater than the sum of the 0 static pressure flow of all battery box assemblies 1, which can ensure that the hot air is discharged in time when the exhaust fan of the battery box has the maximum air volume, thereby avoiding the increase of the cabin pressure and the temperature rise caused by the failure of the battery box to discharge air in time.

[0069] In an exemplary embodiment, as shown in Figure 9As shown, the battery box assembly 1 comprises: a battery box 16, battery cell compartments 17 and battery cells 14, the battery box 16 is provided with a ventilation air duct 11, the battery cell compartments 17 are provided with second accommodating cavities, the battery cell compartments 17 are at least one, the battery cells 14 are at least one, and the battery cells 14 are installed in the second accommodating cavities. The battery cell compartments 17 are provided with the second accommodating cavities, the battery cells 14 are installed in the second accommodating cavities, and the temperature in each battery cell compartment can be controlled and managed more accurately. According to the heat generation of different battery cell compartments, corresponding heat dissipation measures can be adopted to avoid the performance or service life of the battery cells 14 being affected by overheating, ensure that the battery cells work in a suitable temperature environment, and improve the stability and safety of the battery system. The separation design of the battery cell compartments 17 can effectively prevent mutual interference between the battery cells 14. In the charging and discharging process of the battery cells, the performance decline or failure caused by electromagnetic coupling and heat transfer between the battery cells is avoided, and the reliability of the battery system is improved.

[0070] Further, as shown in Figure 10 and Figure 11 The battery box assembly 1 further comprises a plurality of cooling fins 15, the plurality of cooling fins 15 are arranged on both sides of the battery cell compartments 17 in an array, and a separation space 151 is formed between adjacent two cooling fins. The plurality of cooling fins 15 can increase the contact area of air in the air duct, and at the same time, the plurality of cooling fins 15 can reduce the flow resistance of air in the air duct, the separation space 151 between the fins promotes the mixing of air during the flow of air in the air duct, reduces the temperature difference of the flowing air, and changes the air flow state, so that the air flows in the flow channel in a turbulent manner.

[0071] According to another specific embodiment of the present application, a vehicle is provided, comprising a vehicle body and the air-cooled battery compartment described in any of the embodiments. The use of the air-cooled battery compartment in the vehicle can effectively maintain the suitable temperature of the battery. In a high-temperature environment of the battery box, the excessive heat generated by the battery cells can be removed in time, the performance of the battery cells is prevented from being reduced due to overheating, the output power of the battery cells is stabilized, the power performance of the vehicle is ensured, and the acceleration, climbing and other operations of the vehicle are more smooth.

[0072] The above is only a preferred embodiment of the present application, and it should be pointed out that, for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements should also be regarded as the protection scope of the present application.

[0073] For the convenience of description, spatial relative terms such as "above", "upper", "top surface", "upper" and the like can be used herein to describe the spatial positional relationship of one device or feature with other devices or features as shown in the drawings.

[0074] It should be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures.

[0075] For example, if a device in the figures is turned on its side, so that it is no longer standing on a base, then a part that was described as "above" other parts might then be

[0076] Consequently, exemplary terms such as "above" and "below" can include both orientations of the device as shown in the figures. The device can also be oriented in other ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0077] In addition, it is to be appreciated that certain features that are, for clarity, described above and below as part of one or more implementations can be implemented independently of other features that are described as part of one or more other implementations. Further, the term "example" is used in this context to refer to one or more implementations, and is not to be construed as an actual example or instance of the one or more implementations.

[0078] The repetition of identical or similar descriptions in various places in the specification is not necessarily intended to imply that the same or similar features are present in all embodiments. Further, the description as provided above illustrates the illustrative aspects described herein. It is anticipated that modifications and alterations will occur to others upon reading and interpreting this specification and the associated drawings. It is intended that the scope of the application be measured by the claims and their equivalents.

[0079] In the above embodiments, the description of each embodiment is focused on different aspects, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0080] The preferred embodiments of the present application have been described above with the specific details. Obviously, the present application can be carried out without the specific details. Thus, the above description is illustrative only and not restrictive. It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application cover modifications and variations of this application provided they come within the scope of the appended claims and their equivalents.

Claims

1. An air-cooled battery compartment, characterized in that, The battery compartment has a first accommodating cavity; The battery box assembly (1) is arranged in the first accommodating cavity, the battery box assembly (1) is at least one, the battery box assembly (1) has a ventilation air duct (11), the air inlet and the air outlet of the ventilation air duct (11) are communicated with the first accommodating cavity; The air duct assembly (2) is at least partially arranged in the first accommodating cavity, the air duct assembly (2) is connected with the battery box assembly (1), and the battery box assembly (1) and the air duct assembly (2) form an air flow buffer area (12), and the air outlet is communicated with the air duct assembly (2) through the air flow buffer area (12). The air duct assembly (2) includes an air extraction channel (21), the air extraction channel (21) has an air inlet end and an air outlet end, the side wall of the air extraction channel (21) is provided with an air inlet channel communicated with the air flow buffer area (12), and the air inlet channel is provided with a cooling fan (13), the cooling fan (13) is used for guiding the air flow of the air flow buffer area (12) into the air extraction channel (21).

2. The air-cooled battery compartment of claim 1, wherein, The side wall of the air extraction channel (21) forms a windward surface (211), the windward surface (211) is arranged opposite to the cooling fan (13), the plane where the windward surface is located is arranged at an angle with the axial direction of the cooling fan (13), and the windward surface (211) extends in the direction from the air inlet end to the air outlet end.

3. The air-cooled battery compartment of claim 2, wherein, The air inlet channel is a plurality of, and the air inlet channel is arranged on the opposite side wall of the air extraction channel (21), each air extraction channel (21) is correspondingly provided with one battery box assembly (1), and at least one side wall provided with the air inlet channel is correspondingly provided with one windward surface (211).

4. The air-cooled battery compartment of claim 3, wherein, The side wall provided with the air inlet channel is connected with the windward surface (211) through a connecting side wall (22), wherein the maximum inner diameter of the cooling fan (13) is L, and the width of the connecting side wall (22) is W, wherein W≥0.3L.

5. The air-cooled battery compartment of claim 4, wherein, The two side walls provided with the air inlet channel are correspondingly provided with one windward surface (211), and the two windward surfaces (211) are located between the two side walls.

6. The air-cooled battery compartment of claim 5, wherein, The flow direction of the air flow flowing into the air extraction channel (21) from the air inlet channel is the same after being guided by each windward surface (211).

7. The air-cooled battery compartment of claim 6, wherein, The air extraction channel (21) is a plurality of, the battery box assembly (1) is a plurality of, the air extraction channel (21) and the battery box assembly (1) are alternately arranged, and the air extraction channel (21) and the battery box assembly (1) are sequentially communicated.

8. The air-cooled battery compartment of claim 7, wherein, The flow area of at least one air extraction channel (21) gradually increases from the air inlet end of the air extraction channel (21) to the air outlet end of the air extraction channel (21).

9. The air-cooled battery compartment of claim 8, wherein, The air duct assembly (2) further comprises:

10. The air-cooled battery compartment of claim 9, wherein, The louver (23) is arranged outside the air outlet end. ​ 11. The air-cooled battery compartment of claim 10, wherein, The air duct assembly (2) in the bin further comprises: An exhaust fan (24) is arranged outside the air outlet end, and the shutter (23) is arranged outside the air outlet of the exhaust fan (24).

12. The air-cooled battery compartment of any one of claims 1-11, wherein, The battery box assembly (1) comprises: A battery box (16) has a ventilation air duct (11); An electric core bin (17) is arranged in the ventilation air duct (11) and extends along a third preset direction, is connected with the battery box assembly (1), and is provided with a second accommodating cavity. The electric core bin (17) is at least one; An electric core (14) is at least one, and the electric core (14) is arranged in the second accommodating cavity.

13. The air-cooled battery compartment of claim 12, wherein, The battery box assembly (1) further comprises: A plurality of cooling fins (15) are arranged on both sides of the electric core bin (17) in an array, and a separation space (151) is formed between two adjacent cooling fins (15).

14. A vehicle characterized by comprising: The air-cooled battery bin comprises a vehicle body and the air-cooled battery bin according to any one of claims 1-13.

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