Battery pack and vehicle

Abstract

The invention discloses a battery pack and a vehicle, and belongs to the technical field of new energy vehicles. The battery pack comprises a battery box, a plurality of battery cell modules and an airflow driving assembly, by reasonably arranging the position layout of the airflow driving assembly, the first airflow channel, the second airflow channel, the air inlet and the air outlet, a complete airflow path is formed. Specifically, the plurality of air inlets are positioned on the same side of the battery box, and the air outlets are positioned on different sides, so that a through airflow path can be formed. External air enters from the air inlet under the action of the airflow driving assembly, flows through the gaps of the battery cell modules along the first airflow channel, and takes away heat generated by the battery cell modules; and then the airflow is gathered through the second airflow channel and then intensively flows to the air outlet to be exhausted. Therefore, not only is the overall heat dissipation capability enhanced, but also heat accumulation in the battery box is effectively avoided, the heat dissipation efficiency of the battery pack is remarkably improved, the working temperature of the battery pack is reduced, and the safety performance of the electric automobile is improved.

Description

Technical Field

[0001] The present application relates to the field of new energy vehicle technology, and in particular to a battery pack and a vehicle. Background Art

[0002] With the continuous development of economy and technology, the demand for long-lasting power supply for electric vehicles, portable power supplies and other high-power electrical equipment is increasing. As a key energy storage component, battery packs have undergone continuous research and development and innovation in various fields in recent years.

[0003] A battery pack generally includes a box body and a plurality of battery cell modules located in the box body. The box body is composed of a detachably connected box body and a box cover, which together form a protective space to provide protection for the battery module and prevent it from being affected by external impact and water vapor intrusion.

[0004] However, the battery cell module generates a large amount of heat when working, causing the temperature of the battery pack to rise, thus affecting the safety performance of electric vehicles. Summary of the invention

[0005] The embodiment of the present application provides a battery pack and a vehicle, which can solve the problem of battery pack temperature increase to a certain extent. The technical solution is as follows:

[0006] In one aspect, a battery pack is provided, comprising:

[0007] Battery box, multiple battery cell modules and air flow drive components;

[0008] The battery box has an accommodating space, and a plurality of air inlets and an air outlet communicated with the accommodating space, the plurality of air inlets are located on the same side of the battery box, and the plurality of air inlets and the air outlet are located on different sides of the battery box;

[0009] The plurality of battery cell modules are sequentially fixed in the accommodating space along a first direction, a first airflow channel is formed between any two adjacent battery cell modules, the first airflow channel extends along a second direction, and one end of each of the first airflow channels is connected to a corresponding air inlet, and the first direction intersects with the second direction;

[0010] The battery box further comprises a second airflow channel, one end of the second airflow channel is connected to an end of the first airflow channel away from the air inlet, and the other end of the second airflow channel is connected to the air outlet;

[0011] The airflow driving component is disposed at the air outlet to drive the airflow from the air inlet to flow to the air outlet through the first airflow channel and the second airflow channel.

[0012] Optionally, the battery box includes: a bottom plate, and a plurality of side plates distributed around the periphery of the bottom plate; the plurality of side plates include: a first plate body and a second plate body arranged opposite to each other, and a third plate body and a fourth plate body arranged opposite to each other, and the first plate body, the third plate body, the second plate body and the fourth plate body are connected in sequence;

[0013] Wherein, the plurality of air inlets are located on the first plate, the air outlet is located on the third plate, and the first plate is perpendicular to the third plate.

[0014] Optionally, the battery box further comprises: a first partition and a second partition connected to each other; a side of the first partition facing away from the second partition is connected to the first plate body; a side of the second partition facing away from the first partition is connected to the fourth plate body;

[0015] Among them, the first plate body, the fourth plate body, the first partition plate and the second partition plate form a bearing cavity for accommodating the multiple battery cell modules; the first partition plate, the second partition plate, the second plate body and the third plate body together form the second air flow channel.

[0016] Optionally, the second partition has openings corresponding one-to-one to the plurality of air inlets, and the first air flow channel and the second air flow channel are connected through the openings.

[0017] Optionally, the airflow driving component includes: a centrifugal fan, wherein the centrifugal fan is fixed at the air outlet, and an axis of the centrifugal fan is perpendicular to the first direction and perpendicular to the second direction.

[0018] Optionally, the airflow drive component further includes: a control component, which is electrically connected to the centrifugal fan, and the control component is configured to: adjust the rotation speed of the centrifugal fan in real time according to the temperature of the battery core module.

[0019] Optionally, the battery pack also includes: a dustproof plate, which is detachably covered on the side of the first plate body facing away from the second plate body, and a dustproof filtering unit is provided on the dustproof plate, and the dustproof filtering unit has multiple layers of filter screens, and the aperture of the multiple layers of filter screens gradually decreases from the outside to the inside, and is used for graded filtering of particulate matter in the airflow.

[0020] Optionally, a slot is provided on a side of the first plate body facing away from the second plate body, and the slot extends along a third direction, and the third direction is perpendicular to the first direction and perpendicular to the second direction;

[0021] The dustproof plate is provided with an inserting portion matching the slot, and the inserting portion can be slidably inserted into the slot, so that the dustproof plate can be detachably fixed on the first plate body.

[0022] Optionally, the battery pack further includes: a cover plate, which is detachably connected to a side of the plurality of side plates facing away from the bottom plate.

[0023] In another aspect, a vehicle is provided, comprising:

[0024] A vehicle body, and a battery pack installed in the vehicle body, wherein the battery pack is any one of the battery packs described above.

[0025] The beneficial effects brought by the technical solution provided by the embodiment of the present application include at least:

[0026] By reasonably arranging the positions of the airflow drive assembly, the first airflow channel, the second airflow channel, the air inlet and the air outlet, a complete airflow path is formed. Specifically, multiple air inlets are located on the same side of the battery box, while the air outlets are located on different sides, so that a through-type airflow path can be formed. Under the action of the airflow drive assembly, the outside air enters from the air inlet, flows through the gap between the battery cell modules along the first airflow channel, and takes away the heat generated by the battery cell modules; then, the airflow is collected through the second airflow channel and concentrated to the air outlet for discharge. This not only enhances the overall heat dissipation capacity, but also effectively avoids the accumulation of heat in the battery box, significantly improves the heat dissipation efficiency of the battery pack, and reduces the operating temperature of the battery pack, thereby improving the safety performance of electric vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 is a schematic diagram of the structure of a battery pack provided in an embodiment of the present application;

[0029] Figure 2 yes Figure 1 An exploded view of a battery pack is shown;

[0030] Figure 3 It is a structural schematic diagram of a battery box and an airflow drive assembly provided in an embodiment of the present application;

[0031] Figure 4 is a schematic structural diagram of another battery box and airflow drive assembly provided in an embodiment of the present application;

[0032] Figure 5 yes Figure 1 An exploded view of another battery pack is shown. DETAILED DESCRIPTION

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

[0034] The directional nouns involved in the embodiments of the present application, such as "upper", "lower", "side", etc., are generally based on the directions shown in the figures, and these directional nouns are used only to more clearly describe the relationship between structures, and are not intended to describe absolute directions.

[0035] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meanings as commonly understood by those of ordinary skill in the art.

[0036] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0037] Please refer to Figure 1 and Figure 2 , Figure 1 is a schematic diagram of the structure of a battery pack provided in an embodiment of the present application, Figure 2 yes Figure 1 An exploded view of a battery pack is shown. The battery pack 000 may include: a battery box 100 , a plurality of battery cell modules 200 , and an airflow driving assembly 300 .

[0038] To see the structure of the battery box more clearly, please refer to Figure 3 , Figure 3 It is a structural schematic diagram of a battery box and an airflow drive assembly provided in an embodiment of the present application. The battery box 100 in the battery pack 000 may have an accommodating space C, and multiple air inlets K1 and an air outlet K2 connected to the accommodating space C. Among them, the multiple air inlets K1 are located on the same side of the battery box 100, and the multiple air inlets K1 and the air outlet K2 are located on different sides of the battery box 100. For example, the number of the multiple air inlets K1 is three, and the three air inlets K1 are all located on the same side of the battery box 100.

[0039] The multiple battery modules 200 in the battery pack 000 can be fixed in the accommodating space C in sequence along the first direction X, and a first airflow channel V1 can be formed between any two adjacent battery modules 200. The first airflow channel V1 can extend along the second direction Y, and one end of each first airflow channel V1 is connected to a corresponding air inlet K1. Here, the first direction X can intersect with the second direction Y. For example, the first direction X is perpendicular to the second direction Y.

[0040] It should be noted that the number of the multiple battery cell modules 200 is four, so three first air flow channels V1 are formed between adjacent battery cell modules 200, and the three first air flow channels V1 are connected to the three air inlets K1 in a one-to-one correspondence.

[0041] The battery box 100 in the battery pack 000 may also have a second airflow channel V2, one end of which is connected to an end of the first airflow channel V1 away from the air inlet K1, and the other end of the second airflow channel V2 is connected to the air outlet K2.

[0042] The airflow driving assembly 300 in the battery pack 000 is disposed at the air outlet K2 to drive the airflow from the air inlet K1 to flow to the air outlet K2 through the first airflow channel V1 and the second airflow channel V2.

[0043] In the embodiment of the present application, a complete airflow path is formed by reasonably arranging the positions of the airflow driving component 300, the first airflow channel V1, the second airflow channel V2, the air inlet K1 and the air outlet K2. Specifically, multiple air inlets K1 are located on the same side of the battery box 100, while the air outlet K2 is located on different sides, so that a through-type airflow path can be formed. Under the action of the airflow driving component 300, the outside air enters from the air inlet K1, flows through the gap between the battery cell module 200 along the first airflow channel V1, and takes away the heat generated by the battery cell module 200; then, the airflow is collected through the second airflow channel V2 and concentrated to the air outlet K2 for discharge. This not only enhances the overall heat dissipation capacity, but also effectively avoids the accumulation of heat in the battery box 100, significantly improves the heat dissipation efficiency of the battery pack 000, and reduces the operating temperature of the battery pack 000, thereby improving the safety performance of the electric vehicle.

[0044] In summary, the present application proposes a battery pack, comprising: a battery box, a plurality of battery cell modules and an airflow drive assembly. By reasonably arranging the positions of the airflow drive assembly, the first airflow channel, the second airflow channel, the air inlet and the air outlet, a complete airflow path is formed. Specifically, the plurality of air inlets are located on the same side of the battery box, while the air outlets are located on different sides, thereby forming a through-type airflow path. Under the action of the airflow drive assembly, the outside air enters from the air inlet, flows through the gap between the battery cell modules along the first airflow channel, and takes away the heat generated by the battery cell modules; then, the airflow is collected through the second airflow channel and concentratedly flows to the air outlet for discharge. This not only enhances the overall heat dissipation capacity, but also effectively avoids the accumulation of heat in the battery box, significantly improves the heat dissipation efficiency of the battery pack, reduces the operating temperature of the battery pack, and thus improves the safety performance of electric vehicles.

[0045] In the examples of this application, please refer to Figure 4 , Figure 4 1 is a schematic diagram of the structure of another battery box and airflow drive assembly provided in an embodiment of the present application. The battery box 100 in the battery pack 000 may include: a bottom plate 101, and a plurality of side plates distributed around the periphery of the bottom plate 101; the plurality of side plates may include: a first plate body 102 and a second plate body 103 disposed oppositely, and a third plate body 104 and a fourth plate body 105 disposed oppositely, and the first plate body 102, the third plate body 104, the second plate body 103 and the fourth plate body 105 are connected in sequence.

[0046] The multiple air inlets K1 in the battery box 100 are located on the first plate 102 , the air outlets K2 in the battery box 100 are located on the third plate 104 , and the first plate 102 is perpendicular to the third plate 104 .

[0047] In this case, a through-type airflow path is formed by multiple air inlets K1 and air outlets K2 located on the adjacent first plate 102 and third plate 104, respectively, and the first plate 102 is perpendicular to the third plate 104. After the outside air enters from the multiple air inlets K1 on the first plate 102, it flows through the gap between the battery cell modules 200 along the first airflow channel V1, taking away the heat generated by the battery cell modules 200; then, the airflow is collected through the second airflow channel V2 and discharged from the air outlet K2 on the third plate 104. This design extends the flow path of the airflow in the battery box 100, ensures that the airflow fully contacts each battery cell module 200, and improves the heat dissipation efficiency. In addition, the design of the air inlet K1 and the air outlet K2 located on different sides of the battery box 100 ensures that the hot air flow can be discharged in time, avoids the accumulation of heat in the battery box 100, and reduces the risk of thermal runaway caused by overheating of the battery pack 000.

[0048] Optional, such as Figure 4As shown, the battery box 100 in the battery pack 000 may also include: a first partition 106 and a second partition 107 connected to each other; the side of the first partition 106 facing away from the second partition 107 is connected to the first plate body 102; and the side of the second partition 107 facing away from the first partition 106 is connected to the fourth plate body 105.

[0049] Among them, the first plate body 102, the fourth plate body 105, the first partition plate 106 and the second partition plate 107 form a carrying cavity M for accommodating multiple battery modules 200; the first partition plate 106, the second partition plate 107, the second plate body 103 and the third plate body 104 together form a second air flow channel V2.

[0050] In this case, multiple air inlets K1 are directly connected to the bearing cavity M to ensure that fresh air from the outside can smoothly enter the bearing cavity M, providing sufficient cooling medium for the battery cell module 200. Each battery cell module 200 is fixed in the bearing cavity M in sequence along the first direction X, and a first air flow channel V1 extending along the second direction Y is formed between any two adjacent battery cell modules 200, and one end of each first air flow channel V1 is connected to a specific air inlet K1 to ensure that the cold air is evenly distributed between each battery cell module 200 to avoid local overheating. The second air flow channel V2 surrounded by the first partition 106, the second partition 107, the second plate body 103 and the third plate body 104 provides a clear exhaust path for the hot air after passing through the first air flow channel V1, accelerates the air circulation of the entire system, and quickly takes away the heat generated by the battery cell module 200. In this way, not only can the heat dissipation efficiency of the battery pack 000 be improved, the risk of thermal runaway is reduced, but also the working stability and service life of the battery pack 000 are enhanced.

[0051] In the embodiments of the present application, Figure 4 As shown, the second partition plate 107 in the battery box 100 may have openings P corresponding to the multiple air inlets K1, and the first air flow channel V1 and the second air flow channel V2 may be connected through the openings P. For example, the number of the openings P is three, corresponding to the three air inlets K1 and the three first air flow channels V1 respectively.

[0052] In this case, the opening P directly connects the first airflow channel V1 with the second airflow channel V2, ensuring that the airflow can flow smoothly from the first airflow channel V1 to the second airflow channel V2, avoiding the blockage or diversion of the airflow at the partition, thereby improving the overall heat dissipation efficiency. Through the design of the opening P, after the airflow enters from the air inlet K1, it flows through the first airflow channel V1, the opening P and the second airflow channel V2 in sequence, and finally discharges from the air outlet K2, forming a complete airflow path. It ensures that the heat can be efficiently taken out of the battery box 100, significantly improving the heat dissipation performance of the battery pack 000.

[0053] Optional, such as Figure 4 As shown, the airflow driving assembly 300 in the battery pack 000 may include: a centrifugal fan 301, the centrifugal fan 301 is fixed at the air outlet K2, and the axis of the centrifugal fan 301 is perpendicular to the first direction X and perpendicular to the second direction Y.

[0054] In this case, the centrifugal fan 301 generates airflow by rotating the impeller, and its air inlet and outlet directions are usually perpendicular to the axis of the impeller. The negative pressure of the centrifugal fan 301 makes the airflow flow evenly from the multiple first airflow channels V1 into the second airflow channel V2, and is discharged from the air outlet K2, avoiding the problem of excessive or weak local airflow, and ensuring that the heat of all battery modules 200 is effectively taken away.

[0055] In addition, the axial installation direction of the centrifugal fan 301 matches the extension direction of the second airflow channel V2, so that the airflow directly enters the centrifugal fan 301 from the second airflow channel V2 and is discharged along the tangential direction, reducing the need for elbows or guide components and reducing structural complexity.

[0056] In an embodiment of the present application, the airflow drive component 300 in the battery pack 000 may also include: a control component (not shown), the control component is electrically connected to the centrifugal fan 301, and the control component is configured to: adjust the speed of the centrifugal fan 301 in real time according to the temperature of the battery cell module 200.

[0057] In this case, the control component dynamically adjusts the speed of the centrifugal fan 301 according to the real-time temperature data of the battery module 200. When the temperature of the battery module 200 is high, the speed of the centrifugal fan 301 is increased to enhance the heat dissipation capacity; when the temperature is low, the speed of the centrifugal fan 301 is reduced to reduce energy consumption. This intelligent temperature control mechanism ensures that the battery pack 000 can maintain a suitable operating temperature under different working conditions, significantly improving the heat dissipation efficiency. In addition, by adjusting the speed of the centrifugal fan 301 in real time, the problem of excessive heat dissipation of traditional fixed-speed fans under low temperature conditions is avoided, further optimizing energy utilization.

[0058] Optional, please refer to Figure 5 , Figure 5 yes Figure 1 The battery pack 000 also includes: a dust plate 400, which is detachably covered on the side of the first plate body 102 away from the second plate body 103, and a dust filter unit is provided on the dust plate 400, and the dust filter unit has multiple layers of filter screens, and the aperture of the multiple layers of filter screens gradually decreases from the outside to the inside, which is used to grade and filter particulate matter in the airflow.

[0059] Normally, in dusty environments, such as sandstorms or industrial dust environments, the stable operation of battery packs faces many severe challenges. On the one hand, a large amount of dust and particulate matter will enter the battery box with the airflow. When dust adheres to the surface of the battery module, it will affect the heat dissipation efficiency of the battery. The battery generates heat during the charging and discharging process, and under normal circumstances, the heat needs to be dissipated in time to maintain a suitable working temperature. However, the insulation layer formed by dust accumulation hinders heat transfer, causing the battery temperature to rise, thereby reducing performance and even causing safety hazards such as thermal runaway. On the other hand, fine dust particles may enter the electrical connection parts of the battery pack. These parts require good conductivity to ensure the normal operation of the battery pack. However, the accumulation of dust will increase the contact resistance, thereby generating additional heat and accelerating the aging and damage of the connection parts. Moreover, in a humid and dusty environment, dust combined with moisture may form corrosive substances, causing corrosion to the metal components inside the battery box, weakening the structural strength of the components, and affecting the overall stability and reliability of the battery pack. In addition, excessive dust may also block the ventilation channels of the battery pack, making air circulation poor, further deteriorating the heat dissipation conditions and working environment of the battery pack.

[0060] In the embodiment of the present application, a dustproof plate 400 is installed on the side of the first plate body 102 away from the second plate body 103 to cover multiple air inlets K1. The dustproof plate 400 adopts a multi-layer filter design, and its aperture gradually decreases from the outside to the inside, which can intercept particles of different sizes step by step to ensure that the airflow entering the battery box 100 is clean. Specifically, the outer filter intercepts larger particles, and the inner filter intercepts smaller particles to ensure that the airflow entering the battery box 100 is clean, and dust, impurities and other particles are prevented from entering the battery box 100, protecting the battery module 200 and other components from contamination or damage. In addition, by effectively filtering particulate matter, the accumulation of dust inside the battery box 100 is reduced, the risk of short circuit or aging of the battery module 200 due to dust accumulation is reduced, and the service life of the battery pack 000 is extended.

[0061] It should be noted that the dust plate 400 is detachably covered on the first plate body 102, so that users or maintenance personnel can easily remove the dust plate 400, clean or replace the filter, and ensure that the dust filter unit is always in an efficient working state. In addition, the detachable design simplifies the maintenance process, reduces maintenance time and cost, and avoids the problem of reduced heat dissipation efficiency due to filter blockage. In this way, it can ensure that the battery pack 000 can still operate stably in harsh environments, expand the application scenarios of the battery pack 000, and improve the reliability of the battery pack 000 in complex environments.

[0062] In the embodiments of the present application, Figure 5As shown, a slot F is provided on one side of the first plate 102 in the battery box 100 away from the second plate 103, and the slot F can extend along a third direction Z. The third direction Z is perpendicular to the first direction X and perpendicular to the second direction Y. Exemplarily, there are two slots F, which are distributed on both sides of the first plate 102 along the first direction X.

[0063] Among them, the dustproof plate 400 in the battery pack 000 can be provided with a plug-in portion matching the slot F, and the plug-in portion can be slidably inserted into the slot F, so that the dustproof plate 400 can be detachably fixed on the first plate body 102.

[0064] In this case, by easily sliding the plug-in portion of the dustproof plate 400 into or out of the slot F, the user or maintenance personnel can quickly and conveniently clean or replace the filter, further simplifying the maintenance process and reducing maintenance time and cost.

[0065] Optional, such as Figure 5 As shown, the battery pack 000 may further include: a cover plate 500 , which is detachably connected to a side of the plurality of side plates facing away from the bottom plate 101 .

[0066] In this case, the cover plate 500 can provide an additional layer of physical protection to prevent external contaminants (such as dust, moisture, etc.) from directly contacting the internal components of the battery pack 000. Especially in dusty or humid environments, this additional protection measure can significantly improve the protection level of the battery pack 000 and reduce the impact of environmental factors on the battery pack. In addition, the cover plate 500 adopts a detachable design, which makes the assembly and subsequent maintenance of the battery pack 000 easier. When internal inspection, cleaning or replacement of parts is required, only the cover plate 500 needs to be removed, without the need for complicated tools or steps, which greatly saves time and labor costs.

[0067] In addition, by covering the side of the side plate facing away from the bottom plate 101 with the cover plate 500, the cover plate 500 can effectively prevent accidental touching of the high-voltage part inside the battery pack 000, reduce the risk of electrical safety accidents, and provide a safer working environment for operators.

[0068] In summary, the present application proposes a battery pack, comprising: a battery box, a plurality of battery cell modules and an airflow drive assembly. By reasonably arranging the positions of the airflow drive assembly, the first airflow channel, the second airflow channel, the air inlet and the air outlet, a complete airflow path is formed. Specifically, the plurality of air inlets are located on the same side of the battery box, while the air outlets are located on different sides, thereby forming a through-type airflow path. Under the action of the airflow drive assembly, the outside air enters from the air inlet, flows through the gap between the battery cell modules along the first airflow channel, and takes away the heat generated by the battery cell modules; then, the airflow is collected through the second airflow channel and concentratedly flows to the air outlet for discharge. This not only enhances the overall heat dissipation capacity, but also effectively avoids the accumulation of heat in the battery box, significantly improves the heat dissipation efficiency of the battery pack, reduces the operating temperature of the battery pack, and thus improves the safety performance of electric vehicles.

[0069] The embodiment of the present application also provides a vehicle, which may be a hybrid vehicle, a pure oil vehicle, or an extended-range electric vehicle, etc. The vehicle may include: a vehicle body, and a battery pack 000 installed in the vehicle body, wherein the battery pack 000 is any of the battery packs 000 described above.

[0070] In the present application, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0071] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only.

[0072] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

[0073] The above is only to facilitate those skilled in the art to understand the technical solution of this application and is not intended to limit this application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the protection scope of this application.

Claims

1. A battery pack, characterized in that: include: A battery box (100), a plurality of battery core modules (200), and an airflow driving assembly (300); The battery box (100) has an accommodating space (C), and a plurality of air inlets (K1) and an air outlet (K2) in communication with the accommodating space (C), the plurality of air inlets (K1) being located on the same side of the battery box (100), and the plurality of air inlets (K1) and the air outlet (K2) being located on different sides of the battery box (100); The plurality of battery cell modules (200) are fixed in sequence in the accommodating space (C) along a first direction (X), a first airflow channel (V1) is formed between any two adjacent battery cell modules (200), the first airflow channel (V1) extends along a second direction (Y), and one end of each of the first airflow channels (V1) is connected to a corresponding air inlet (K1), and the first direction (X) intersects with the second direction (Y); The battery box (100) further comprises a second airflow channel (V2), one end of the second airflow channel (V2) being connected to an end of the first airflow channel (V1) away from the air inlet (K1), and the other end of the second airflow channel (V2) being connected to the air outlet (K2); The airflow driving component (300) is arranged at the air outlet (K2) to drive the airflow from the air inlet (K1) to flow to the air outlet (K2) through the first airflow channel (V1) and the second airflow channel (V2).

2. The battery pack according to claim 1, characterized in that: The battery box (100) comprises: a bottom plate (101), and a plurality of side plates distributed around the periphery of the bottom plate (101); the plurality of side plates comprise: a first plate body (102) and a second plate body (103) arranged opposite to each other, and a third plate body (104) and a fourth plate body (105) arranged opposite to each other, wherein the first plate body (102), the third plate body (104), the second plate body (103) and the fourth plate body (105) are connected in sequence; The plurality of air inlets (K1) are located on the first plate (102), the air outlet (K2) is located on the third plate (104), and the first plate (102) is perpendicular to the third plate (104).

3. The battery pack according to claim 2, characterized in that: The battery box (100) further comprises: a first partition (106) and a second partition (107) connected to each other; a side of the first partition (106) facing away from the second partition (107) is connected to the first plate body (102); a side of the second partition (107) facing away from the first partition (106) is connected to the fourth plate body (105); The first plate body (102), the fourth plate body (105), the first partition plate (106) and the second partition plate (107) form a bearing cavity (M) for accommodating the multiple battery cell modules (200); the first partition plate (106), the second partition plate (107), the second plate body (103) and the third plate body (104) together form the second airflow channel (V2).

4. The battery pack according to claim 3, characterized in that: The second partition plate (107) has openings (P) corresponding one-to-one to the plurality of air inlets (K1), and the first air flow channel (V1) and the second air flow channel (V2) are connected via the openings (P).

5. The battery pack according to any one of claims 1 to 4, characterized in that: The airflow driving component (300) comprises: a centrifugal fan (301), wherein the centrifugal fan (301) is fixed at the air outlet (K2), and the axis of the centrifugal fan (301) is perpendicular to the first direction (X) and perpendicular to the second direction (Y).

6. The battery pack according to claim 5, characterized in that: The airflow drive component (300) further comprises: a control component, the control component being electrically connected to the centrifugal fan (301), and the control component being configured to adjust the rotation speed of the centrifugal fan (301) in real time according to the temperature of the battery core module (200).

7. The battery pack according to claim 2, characterized in that: The battery pack further comprises: a dustproof plate (400), the dustproof plate (400) being detachably covered on a side of the first plate body (102) facing away from the second plate body (103), and a dustproof filter unit being provided on the dustproof plate (400), the dustproof filter unit having a plurality of layers of filter screens, the aperture of the plurality of layers of filter screens gradually decreasing from the outside to the inside, and being used for graded filtering of particulate matter in an airflow.

8. The battery pack according to claim 7, characterized in that: A slot (F) is provided on a side of the first plate body (102) facing away from the second plate body (103), and the slot (F) extends along a third direction (Z), and the third direction (Z) is perpendicular to the first direction (X) and perpendicular to the second direction (Y); The dustproof plate (400) is provided with an inserting portion matching the slot (F), and the inserting portion can be slidably inserted into the slot (F) so that the dustproof plate (400) can be detachably fixed on the first plate body (102).

9. The battery pack according to claim 7, characterized in that: The battery pack further comprises: a cover plate (500), wherein the cover plate (500) is detachably connected to a side of the plurality of side plates facing away from the bottom plate (101).

10. A vehicle, characterized in that: include: A vehicle body, and a battery pack installed in the vehicle body, wherein the battery pack is the battery pack according to any one of claims 1 to 9.

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