Air cooling bag

Abstract

The utility model discloses an air cooling bag, and relates to the technical field of battery cell heat dissipation, the air cooling bag comprises a base, a plurality of battery cell modules and a cover plate assembly, the plurality of battery cell modules are arranged on the base at intervals; the cover plate assembly covers the plurality of battery cell modules, and any two adjacent battery cell modules, the cover plate assembly and the base are enclosed to form an air duct. The utility model aims to design the air duct formed by the battery cell module, so as to solve the problem that the structural complexity and the heat dissipation performance of the air duct are difficult to balance in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation of electric core modules, in particular to an air cooling package. Background Art

[0002] The air cooling pack is used to carry the battery cell module and dissipate heat from the battery cell module. At present, the air duct structures of the air cooling packs of various companies are roughly the same, but there are obvious differences in the composition structure. Usually the air duct is made of bent sheet metal. The structural strength is good, but because the air duct space is relatively small and close to the battery cell, it may lead to insufficient safety clearance and potential safety hazards, such as overheating or circuit short circuit, which will have a negative impact on the stability and safety of the battery cell and the entire system. In some existing technologies, insulating materials are used instead of sheet metal, but there are two situations in the existing technology. One is that the air duct structure is simple and the air duct cannot be sealed well; the other is that in order to achieve good sealing of the air duct, multiple components are used to block it, resulting in relatively complex assembly. Utility Model Content

[0003] The main purpose of the utility model is to provide an air duct structure, aiming to design an air duct formed by a battery core module to solve the problem in the prior art that it is difficult to balance the complexity of the air duct structure and the heat dissipation performance.

[0004] To achieve the above purpose, an air cooling package includes:

[0005] Base;

[0006] A plurality of battery cell modules, wherein the plurality of battery cell modules are spaced apart and arranged on the base; and

[0007] A cover plate assembly is provided to cover the plurality of battery cell modules, and an air duct is formed between any two adjacent battery cell modules, the cover plate assembly and the base.

[0008] In one embodiment, the cover plate assembly comprises:

[0009] A cover plate, the cover plate is arranged on a side of the plurality of battery cell modules facing away from the base;

[0010] The wind shield member, the battery cell module has a first side and a second side relative to each other, the wind shield member is provided on the first side of each two adjacent battery cell modules, the air duct is formed between the two adjacent battery cell modules and the corresponding wind shield member, cover plate and base, and the air duct forms an air duct opening on the second side of the two adjacent battery cell modules.

[0011] In one embodiment, the cover plate has a long groove, the opening of the groove is facing away from the side of the battery cell module, the groove is arranged in each of the air ducts, and the groove extends along the length direction of the air duct.

[0012] In one embodiment, the outer side walls of the groove are respectively connected to two corresponding adjacent battery core modules, and the outer side walls are coated with an adhesive material for connecting the battery core module and the cover plate.

[0013] In one embodiment, the cover plate has a first connecting side plate and a second connecting side plate extending toward one side of the battery cell module, the first connecting side plate and the second connecting side plate are relatively arranged at the edge of the cover plate, the first connecting side plate and the second connecting side plate are respectively connected to the outer sides of the two battery cell modules at the edge, each of the side plates has a plurality of first fixing parts, the corresponding battery cell modules have second fixing parts corresponding to the plurality of first fixing parts one by one, the first fixing parts are correspondingly connected to the second fixing parts to fix the cover plate to the battery cell module.

[0014] In one embodiment, the air cooling package further includes an air guiding device, and the air guiding device includes:

[0015] An air guide shell, the air guide shell is arranged at the air duct opening, the air guide shell has an air inlet, an air outlet and a receiving cavity, the air inlet and the air outlet are arranged at intervals, the air inlet and the air outlet are connected through the receiving cavity, the air inlet is arranged at the air duct opening and faces the air duct;

[0016] A fan is arranged in the accommodating cavity, an air suction port of the fan faces an air inlet of the air guide shell, and an air exhaust port of the fan faces an air outlet of the air guide shell.

[0017] In one embodiment, the air guide device is provided with a protruding plug interface, the end face of the protruding plug interface faces the air duct opening and is plugged into the air duct opening, and the air inlet is arranged on the end face of the protruding plug interface.

[0018] In one embodiment, the air guide device further includes a contact plate, which is disposed at the protruding plug port and connects the air guide shell and the cover plate.

[0019] In one embodiment, the wind shielding member further comprises wind shielding foam, and the wind shielding foam is arranged at each gap between the wind guiding device and the air duct opening, and the wind shielding foam is arranged at each gap between the cover plate assembly and the air duct.

[0020] In one embodiment, each contact surface between the air guide device and the battery cell module is provided with insulating material.

[0021] The utility model forms an integral air-cooling package by arranging a plurality of battery cell modules in parallel and spaced relation on a base along a first direction, forming an air duct between every two battery cell modules. The cover plate covers the battery cell module, and the groove structure extending along the first direction enhances the stability of the connection. The air guide device is located at one end of the air duct opening, and can be an exhaust fan or an air guide shell with two air outlets, and the air guide shell has a built-in fan. This design is intended to achieve high heat dissipation performance, and the air is guided into the air duct by the air guide device, and the air flow is forced by the fan. At the same time, the air duct is closed by the setting of the wind shield assembly to ensure that the hot air is quickly discharged, thereby effectively reducing the temperature of the battery cell module and improving the heat dissipation efficiency of the entire air cooling system. Therefore, the air duct structure of the utility model adopts a combination of a cover plate assembly, an air guide device, a battery cell module and a base, to realize an air duct structure with high sealing performance, and solves the problem that the air duct structure in some examples is difficult to balance the structural complexity and heat dissipation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0023] Figure 1 This is a schematic diagram of the structure of the air cooling package of the utility model;

[0024] Figure 2 This is an exploded view of the air cooling package of the utility model;

[0025] Figure 3 Another perspective of the explosion diagram of the air-cooling package of the utility model;

[0026] Figure 4 This is a structural schematic diagram of the cover plate of the utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the air guide shell of the utility model;

[0028] Figure 6 This is another perspective of the schematic diagram of the wind guide shell structure of the utility model.

[0029] Description of Figure Numbers:

[0030]

[0031]

[0032] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0035] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0036] The air cooling pack is used to carry the battery cell module and dissipate heat from the battery cell module. At present, the air duct structures of the air cooling packs of various companies are roughly the same, but there are obvious differences in the composition structure. Usually the air duct is made of bent sheet metal. The structural strength is good, but because the air duct space is relatively small and close to the battery cell, it may lead to insufficient safety clearance and potential safety hazards, such as overheating or circuit short circuit, which will have a negative impact on the stability and safety of the battery cell and the entire system. In some existing technologies, insulating materials are used instead of sheet metal, but there are two situations in the existing technology. One is that the air duct structure is simple and the air duct cannot be sealed well; the other is that in order to achieve good sealing of the air duct, multiple components are used to block it, resulting in relatively complex assembly.

[0037] In order to solve the above problems, the utility model proposes an air cooling package, combined with reference Figures 1 to 3The air cooling package proposed in the utility model includes a base 100, a plurality of battery cell modules 200 and a cover plate assembly 300. The plurality of battery cell modules 200 are arranged on the base 100 in parallel and spaced apart in the same direction. There is a gap extending along the first direction between every two battery cell modules 200. The cover plate assembly 300 is covered on the plurality of battery cell modules 200. An air duct 500 is formed between any two adjacent battery cell modules 200, the cover plate assembly 300 and the base 100.

[0038] It can be understood that if there are two battery cell modules 200 in this embodiment, after the two battery cell modules 200 are placed on the base 100, the cover plate assembly 300 is covered on the two battery cell modules 200, and the two battery cell modules 200, the cover plate 310 and the base 100 serve as four walls to form a hollow cavity together. The hollow cavity is the air duct 500 in this embodiment, and heat dissipation can then be achieved through the air duct 500.

[0039] In some examples of air ducts, an additional hollow pipe is inserted between two battery cell modules, and the hollow pipe serves as an air duct for the air cooling pack.

[0040] In this embodiment, the battery cell module 200 is directly regarded as the air duct wall, and the air duct 500 is formed by using the battery cell module 200. Only an additional cover plate 310 is required to enclose and form the air duct 500. Compared with the hollow pipe, this embodiment has a more reasonable structure, reduces the use of components, and reduces the complexity of the air duct structure of the air cooling package. At the same time, after the cover plate assembly 300 in this embodiment covers the air duct 500, it can also ensure the sealing of the air cooling package in this embodiment, so that the air cooling package has good heat dissipation performance.

[0041] In this embodiment, combined with reference Figures 1 to 3 The cover plate assembly 300 includes a cover plate 310 and a wind shield 320, and the cover plate 310 is covered on the side of the multiple battery cell modules 200 facing away from the base 100; the battery cell module 200 has a first side and a second side relative to each other, and a wind shield 320 is provided on the first side of each two adjacent battery cell modules 200, and an air duct 500 is formed between the two adjacent battery cell modules 200 and the corresponding wind shield 320, the cover plate 310, and the base 100, and the air duct 500 forms an air duct opening on the second side of the two adjacent battery cell modules 200.

[0042] It can be understood that, through the cover plate 310 and the wind shield 320, a closed channel with only one opening can be formed, and this opening serves as the air duct opening of the closed channel to achieve the heat dissipation function.

[0043] This wind shield 320 can be a wind shield plate 321 or insulating glue, as long as a closed air duct can be formed. The wind shield 320 in this embodiment is a wind shield plate 321 and a glue. The wind shield 320 is used to block larger gaps, and the glue is used to block small irregular gaps that still exist after the wind shield plate 321 is installed, thereby improving the sealing of the air cooling package.

[0044] The pursuit of good sealing is to control the airflow and prevent the air-cooling package from being affected by the outside air, which would cause the air guide device 400 to be unable to play its maximum role.

[0045] The cover plate 310 integrates the insulation function of the module aluminum bar and the sheet metal shell, reducing parts, reducing working hours and reducing costs. The insulation function helps to improve the safety of the battery system. In the battery system, avoiding direct contact of the electrical parts can reduce the potential failure and danger of the battery system, reduce safety risks, and may cause a short circuit in the battery, so the insulation function ensures the stable operation of the battery system.

[0046] It should be noted that the size of this structure can be adjusted according to the number of modules in different strings to suit the application.

[0047] In this embodiment, combined with reference Figures 1 to 4 The cover plate 310 has a long groove 311 , the opening of the groove 311 is facing away from the side of the battery module 200 , the groove 311 is arranged in each air duct 500 , and the groove 311 extends along the length direction of the air duct 500 .

[0048] It is understandable that for an air cooling pack with only two groups of battery modules 200, there is only one groove 311, and the design of the groove 311 can make it difficult to distinguish the number of battery modules 200 when the number of battery modules 200 is large. Importantly, if the height of the battery module 200 is high, the air duct 500 will be too large, which will reduce the heat dissipation performance. Therefore, the groove 311 can also be used to appropriately reduce the size of the air duct 500 and improve the heat dissipation performance.

[0049] It should be noted that the size of the groove 311 here can be determined according to actual conditions, and the size needs to be such that the groove 311 can be placed in the air duct 500 along the first direction and will not be too far away from the battery cell module 200.

[0050] In this embodiment, if Figure 4 As shown, the outer side walls 312 of the grooves 311 are respectively connected to the corresponding two adjacent battery modules 200 to strengthen the stability of the air duct structure. The outer side walls 312 of the grooves 311 of the cover plate 310 are coated with adhesive material for connecting the battery module 200 and the cover plate 310. The adhesive material can be double-sided tape or double-sided foam tape. Double-sided foam tape is used in this embodiment.

[0051] It should be noted that because the surface formed by multiple battery cells may have uneven areas and gaps, the double-sided tape may be misaligned and fall off after a long vibration test due to poor adhesion. Therefore, in order to ensure that the device can be used for a long time, double-sided foam tape is used in this embodiment. The double-sided foam tape can fill the uneven areas and solve the problem of poor adhesion. Therefore, double-sided tape can be used for convenience in short-term use, and double-sided foam tape should be selected for long-term use.

[0052] In this embodiment, the cover plate 310 has a first connecting side plate 313 and a second connecting side plate 314 extending toward one side of the battery cell module 200. The first connecting side plate 313 and the second connecting side plate 314 are relatively arranged at the edge of the cover plate 310. The first connecting side plate 313 and the second connecting side plate 314 are respectively connected to the outer sides of the two battery cell modules 200 at the edge. At the same time, each side plate has a plurality of first fixing portions 315, and the corresponding battery cell module 200 has a second fixing portion 210 corresponding to the plurality of first fixing portions 315 one by one. The first fixing portion 315 is correspondingly connected to the second fixing portion 210 to fix the cover plate 310 to the battery cell module 200.

[0053] The first fixing portion 315 and the second fixing portion 210 can be two screw holes, which are fixed together by screws, or can be a strapping tape or other fixing parts with a snap-on effect. The first fixing portion 315 and the second fixing portion 210 make the connection between the cover plate 310 and the battery module 200 more stable, reducing the possibility of displacement and loosening of the cover plate 310.

[0054] It should be explained that the above-mentioned first fixing part 315, second fixing part 210 and the viscous material of the outer wall 312 of the groove 311 complement each other. Since simply using viscous material to fix the cover plate 310 cannot achieve a good fixing effect, the first fixing part 315 and the second fixing part 210 are used to stabilize the connection between the cover plate 310 and the battery module 200; if the first fixing part 315 and the second fixing part 210 are simply used, the shockproof function of the air duct structure may be relatively weak, so it is also necessary to use viscous material. Viscous material has good shock absorption and shock reduction performance, which can slow down the transmission of external vibration and impact to the structure, further protect the battery module 200, and prevent structural fatigue and damage caused by vibration. In this embodiment, only the first fixing part 315 and the second fixing part 210 are simply fixed, and the viscous material is used for shock reduction, so as to achieve a relatively stable air duct structure with a simple structure and good performance.

[0055] In this embodiment, the air cooling package also includes an air guide device 400, which includes an air guide shell 410 and a fan 420. The air guide shell 410 is arranged at the air duct opening, and the air guide shell 410 has an air inlet 411, an air outlet 412 and a accommodating cavity 413. The air inlet 411 and the air outlet 412 are arranged at intervals, and the air inlet 411 is connected to the air outlet 412 through the accommodating cavity 413. The air inlet 411 is arranged at the air duct opening and faces the air duct 500; the fan 420 is arranged in the accommodating cavity 413, the air intake port of the fan 420 faces the air inlet 411 of the air guide shell 410, and the air outlet of the fan 420 faces the air outlet 412 of the air guide shell 410.

[0056] The air guide shell 410 of the present embodiment is made by bending and welding sheet metal, and has certain strength and performance.

[0057] The air guiding device 400 is disposed at the air duct opening of each air duct 500 , and at least a portion of the air guiding device 400 abuts against the cover plate 310 .

[0058] In this embodiment, the air guide shell 410 has an air inlet 411 and an air outlet 412 opposite to each other, the air inlet 411 faces the inside of the air duct 500, and the air outlet 412 faces the outside of the air duct 500. The fan 420, as an active heat dissipation device, can improve the heat dissipation efficiency of the entire air cooling system by forcing air to flow. In this way, the air guide device 400 can inhale the hot air in the battery module 200 from the air inlet 411 into the air guide device 400, and discharge it from the air outlet 412, thereby achieving the heat dissipation function.

[0059] It is understandable that the fan 420 is installed on the air guide shell 410, which can reduce the number of assembly parts, simplify the structure, reduce the use of fasteners, and reduce production costs.

[0060] In this embodiment, the air guide shell 410 of the air guide device 400 is provided with a protruding plug-in port 415 to form a trumpet-shaped air guide device 400, the end face of the protruding plug-in port 415 faces the air duct opening and is plugged into the air duct opening, and the air inlet 411 is arranged on the end face of the protruding plug-in port 415.

[0061] It should be noted that although the air guide shell 410 can be installed by compressing the foam, the air guide device 400 may be displaced or even squeezed out under vibration. Therefore, the protruding plug port 415 can be snapped into the air duct 500, or it can be first pasted on the air guide shell 410 with a single-sided adhesive and directly pushed between the two battery modules 200.

[0062] It can be understood that the design of the protruding plug port 415 helps to accurately position and align the air guide shell 410, and the protruding plug port 415 can provide good structural stability to prevent the air guide shell 410 from loosening or shifting during operation, which is crucial to maintaining the accurate position of the air guide device 400 under working conditions to ensure maximum heat dissipation.

[0063] In this embodiment, if Figure 5 and Figure 6 As shown, the air guide device 400 further includes a resisting plate 414 , which is disposed above the protruding plug-in port 415 and is used to connect the air guide shell 410 and the cover plate 310 .

[0064] It is understandable that the contact plate 414 is used to connect the air guide shell 410 and the groove 311 of the cover plate 310. The function of the groove 311 is to reduce the size of the air duct 500 and increase the heat dissipation performance, but the smaller the better. If the air duct 500 is too small, the heat dissipation performance will be reduced, and some parts of the battery module 200 cannot be cooled. Therefore, the degree of depression of the groove 311 needs to be appropriate. At the same time, since the fan 420 is circular, the air guide shell 410 carrying the fan 420 is roughly a cube, and can be slightly rectangular. Otherwise, the heat dissipation performance will be affected by the excessive gap. Therefore, in order to achieve balanced heat dissipation performance, the degree of depression of the groove 311 cannot make the groove 311 directly contact with the air guide shell 410, or there will be a large gap. At this time, the contact plate 414 can be used as a baffle to be set at the gap to avoid air leakage, thereby achieving better heat dissipation performance.

[0065] The abutment plate 414 may be in a “T” shape, an “I” shape, or a “7” shape, and after abutting against the groove 311 , it may have relatively high stability.

[0066] In this embodiment, combined with reference Figure 1 and Figure 2 The air-cooling pack also includes a wind-shielding foam 322, which is disposed at each gap between the air-guiding device 400 and the air duct opening.

[0067] The wind-shielding foam 322 in this embodiment is disposed on both sides of the wind-guiding device 400 to fill the gap that still exists after the wind-guiding device 400 is connected to the battery module 200 .

[0068] It should be noted that there are inevitably irregular gaps between the air guide shell 410 and the two battery modules 200. Due to the existence of the gaps, air will bypass the air guide device 400 and affect the heat dissipation effect. Therefore, using a wind-shielding foam 322 whose shape can be changed at will to fill these irregular gaps can enhance the sealing and make the heat dissipation performance of the air duct structure better. At the same time, the wind-shielding foam 322 can play a buffering role and reduce the impact of vibration on the air duct structure.

[0069] Similarly, the windshield foam 322 is disposed at each gap between the cover plate assembly 300 and the air duct opening. When the windshield member 320 is disposed in the air duct 500, there may be a number of gaps, and the windshield foam 322 can be used to fill the gaps.

[0070] In addition, each contact surface between the air guide device 400 and the battery module 200 is provided with insulating material.

[0071] In the present embodiment, since the air guide shell 410 is made of metal and cannot directly contact the battery cell module 200, the contact surface between the protruding plug port 415 of the air guide device 400 and the battery cell module 200 is provided with insulating material. The insulating material forms an insulating layer on the contact surface between the air guide device 400 and the battery cell module 200 to prevent direct conduction of current between the air guide device 400 and the battery cell module 200. If there is not enough insulation between the air guide device 400 and the battery cell module 200, the current may be directly conducted through the path between the two, causing a short circuit in the battery system. The short circuit may cause dangerous situations such as high current, overheating and even fire. Therefore, the insulating material in the present embodiment solves the safety problem.

[0072] In this embodiment, the insulating material is the windproof foam 322. Since the foam has insulating properties, the use of the foam in this embodiment can meet the needs of windproofing and insulation at the same time, reducing the number of components used and simplifying the structure.

[0073] After the entire system is installed, the air guide device 400 is operated to extract the heat from the battery module 200. The heat enters the air guide device 400 from the air inlet 411 of the air guide device 400 through the air guide capability of the fan 420, and is then discharged from the air duct 500 from the air outlet 412 to achieve the heat dissipation function.

[0074] In summary, the utility model forms an integral air-cooling package by arranging a plurality of battery cell modules 200 in parallel and spaced relation on the base 100 along a first direction, and forming an air duct 500 between every two battery cell modules 200. The cover plate 310 covers the battery cell module 200, and the groove 311 structure extending along the first direction enhances the stability of the connection. The air guide device 400 is located at an opening at one end of the air duct 500, and can be an exhaust fan or an air guide shell 410 with two air outlets. The air guide shell 410 has a built-in fan 420. This design is intended to achieve high heat dissipation performance. The air is guided to flow into the air duct 500 through the air guide device 400, and the air is forced to flow by the fan 420. At the same time, the air duct 500 is closed by the setting of the wind-shielding foam 322 to ensure that the hot air is quickly discharged, thereby effectively reducing the temperature of the battery cell module 200 and improving the heat dissipation efficiency of the entire air cooling system. Therefore, the air duct structure of the utility model adopts a combination of a cover plate assembly 300, an air guide device 400, a battery cell module 200 and a base 100 to realize an air duct 500 with high sealing performance, thereby solving the problem that the air duct structure in some examples is difficult to balance the structural complexity and heat dissipation performance.

[0075] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An air cooling package, characterized in that: include: Base; A plurality of battery core modules, wherein the plurality of battery core modules are spaced apart and arranged on the base; as well as A cover plate assembly is provided to cover the plurality of battery cell modules, and an air duct is formed between any two adjacent battery cell modules, the cover plate assembly and the base.

2. The air cooling package according to claim 1, characterized in that: The cover plate assembly comprises: A cover plate, the cover plate is arranged on a side of the plurality of battery core modules facing away from the base; The wind shield member, the battery cell module has a first side and a second side relative to each other, the wind shield member is provided on the first side of each two adjacent battery cell modules, the air duct is formed between the two adjacent battery cell modules and the corresponding wind shield member, cover plate and base, and the air duct forms an air duct opening on the second side of the two adjacent battery cell modules.

3. The air cooling package according to claim 2, characterized in that: The cover plate has a long groove, the opening of the groove is facing away from the side of the battery module, the groove is arranged in each of the air ducts, and the groove extends along the length direction of the air duct.

4. The air cooling package according to claim 3, characterized in that: The outer side walls of the grooves are respectively connected to two corresponding adjacent battery core modules, and / or the outer side walls are coated with adhesive material for connecting the battery core module and the cover plate.

5. The air cooling package according to claim 4, characterized in that: The cover plate has a first connecting side plate and a second connecting side plate extending toward one side of the battery cell module, the first connecting side plate and the second connecting side plate are arranged opposite to the edge of the cover plate, and the first connecting side plate and the second connecting side plate are respectively connected to the outer sides of the two battery cell modules at the edge; And / or, each of the side panels has a plurality of first fixing parts, and the corresponding battery cell module has a second fixing part corresponding one-to-one to the plurality of first fixing parts, and the first fixing part is correspondingly connected to the second fixing part to fix the cover plate to the battery cell module.

6. The air cooling package according to claim 2, characterized in that: The air cooling package further includes an air guiding device, and the air guiding device includes: An air guide shell, the air guide shell is arranged at the air duct opening, the air guide shell has an air inlet, an air outlet and a receiving cavity, the air inlet and the air outlet are arranged at intervals, the air inlet and the air outlet are connected through the receiving cavity, the air inlet is arranged at the air duct opening and faces the air duct; A fan is arranged in the accommodating cavity, an air suction port of the fan faces an air inlet of the air guide shell, and an air exhaust port of the fan faces an air outlet of the air guide shell.

7. The air cooling package according to claim 6, characterized in that: The air guide device is provided with a protruding plug-in interface, the end face of the protruding plug-in interface faces the air duct opening and is plugged into the air duct opening, and the air inlet is arranged on the end face of the protruding plug-in interface.

8. The air cooling package according to claim 7, characterized in that: The air guide device further comprises a contact plate, which is arranged at the protruding plug-in port and connects the air guide shell and the cover plate.

9. The air cooling package according to any one of claims 6 to 8, characterized in that: The windshield member also includes windshield foam, which is arranged at each gap between the wind guide device and the air duct opening, and the windshield foam is arranged at each gap between the cover plate assembly and the air duct.

10. The air cooling package according to any one of claims 6 to 8, characterized in that: Each contact surface between the air guide device and the battery core module is provided with insulating material.

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