Air-cooled battery box and air-cooled battery device

Abstract

This application provides an air-cooled battery box and an air-cooled battery device, belonging to the field of battery technology. The air-cooled battery box includes: a box body, an air duct assembly, and an air guide baffle; the side wall of the box body is provided with an air inlet and an air return outlet; the air duct assembly includes an extended air duct, one end of which is connected to the air inlet, and the other end of which extends along a first direction, with multiple air outlets on the side of the extended air duct; the air guide baffle is located on one side of the extended air duct along a second direction and is arranged opposite to the air outlets, the air guide baffle is used to guide the air blown out along the air outlets to the air return outlet, and a cell housing area is formed between the air guide baffle and the extended air duct. In the air-cooled battery box of this application, the cell heat dissipation in the cell housing area is uniform, the temperature difference is small, and the air in the housing cavity can circulate efficiently, improving the heat dissipation efficiency of the cell in the cell housing area.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to an air-cooled battery box and an air-cooled battery device. Background Technology

[0002] The usage and operating temperature of the cells within a battery pack have a significant impact on the overall lifespan of the battery pack. However, battery packs relying on air cooling generally suffer from poor airflow design, leading to heat accumulation inside the battery pack. Furthermore, the varying cooling capacities of different cells result in excessive temperature differences between them, ultimately causing a shortened overall battery pack lifespan. Utility Model Content

[0003] This application provides an air-cooled battery box and an air-cooled battery device, which can solve the problem of unreasonable air duct design in battery packs.

[0004] The technical solution is as follows:

[0005] On the one hand, an air-cooled battery box is provided, the air-cooled battery box including: a box body, an air duct assembly and an air guide baffle;

[0006] The box body is provided with a receiving cavity, and the air duct assembly and the air guide baffle are respectively located in the receiving cavity;

[0007] The enclosure is provided with at least one air inlet and at least one air return outlet on its side wall along the first direction;

[0008] The air duct assembly includes at least one extended air duct, one end of which is connected to at least one air inlet, the other end of which extends along the first direction, and the at least one extended air duct is provided with a plurality of air outlets along the side of the second direction.

[0009] The air guide baffle is located on one side of the at least one extended air duct along the second direction and is arranged opposite to the air outlet. The air guide baffle is used to guide the air blown out along the air outlet to the at least one return air outlet. A cell receiving area is formed between the air guide baffle and the at least one extended air duct.

[0010] The second direction is perpendicular to the first direction.

[0011] In some embodiments, the air guide baffle includes at least one inclined plate, the distance between the first end of the inclined plate facing the return air inlet and the extended air duct is D1, and the distance between the second end of the inclined plate away from the return air inlet and the extended air duct is D2, wherein D1 > D2.

[0012] In some embodiments, the areas of the plurality of air outlets are different, and the area of ​​the air outlets gradually increases along the direction away from the air inlet;

[0013] And / or,

[0014] The cell housing area is used to accommodate multiple cells, each of which is parallel to the air outlet direction and is spaced apart from the air guide plate, so that the air blown out of the air outlet can flow through the multiple cells to the air guide plate and be guided along the air guide plate to the at least one return air outlet.

[0015] In some embodiments, the duct assembly includes at least one rectangular tube, each of the rectangular tubes forming an extended duct, the extended duct having a rectangular cross-section.

[0016] One of the rectangular faces of each of the rectangular tubes is arranged perpendicular to the second direction, and the air outlet is located on the rectangular face facing the air guide baffle.

[0017] In some embodiments, the number of extended air ducts is two, the two extended air ducts are symmetrically arranged on both sides of the air guide baffle along the second direction, and the air outlets of the two extended air ducts are arranged opposite to each other.

[0018] The number of air inlets is two, the number of air return outlets is one, the positions of the two air inlets correspond to the positions of the two extended air ducts, and the position of the air return outlet corresponds to the position of the air guide baffle.

[0019] The air guide baffle can direct the air blown out of the air outlets of the two extended air ducts to the return air inlet.

[0020] In some embodiments, the air guide baffle includes two inclined plates arranged in a V-shape, each of which is used to guide the air blown out of the air outlet of one of the extended air ducts.

[0021] In some embodiments, the air-cooled battery box further includes an intake fan located on the at least one return air vent.

[0022] In some embodiments, the air-cooled battery box further includes an air duct clamp;

[0023] The air duct clamp is located within the cell housing area. The air duct clamp is provided with at least two air-cooling channels. The air duct clamp is used to be arranged between two adjacent cells. The air blown out of the air outlet can flow to the air guide baffle through the air-cooling channels.

[0024] In some embodiments, the housing is open at one end along a third direction, and the air-cooled battery box further includes a cover, which is closed and connected to the housing along the third direction, wherein the third direction is perpendicular to the first direction and the second direction, respectively.

[0025] On the other hand, an air-cooled battery device is provided, the air-cooled battery device comprising: the air-cooled battery box as described in this application, and at least one battery cell, the at least one battery cell being located within the battery cell housing area.

[0026] The beneficial effects of the technical solution provided in this application include at least the following:

[0027] The air-cooled battery box of this application has an air duct assembly and a baffle plate arranged inside the housing cavity. The air duct assembly includes at least one extended air duct that can extend and deliver air in the housing cavity along a first direction and deliver air into the housing cavity along a second direction using an air outlet opened on the side. This can ensure the uniformity of air delivery in the housing cavity in the first direction, uniform heat dissipation of the battery cells in the battery cell housing area, and small temperature difference. Moreover, in order to improve the air flow in the housing cavity, a baffle plate is arranged in the second direction of the air outlet. The baffle plate can guide the air to the return air port, so that the air can quickly flow out through the return air port, so that the air in the housing cavity can circulate efficiently, avoid the formation of stagnant air in the housing cavity, and improve the heat dissipation efficiency of the battery cells in the battery cell housing area. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of the air-cooled battery box provided in the embodiments of this application;

[0030] Figure 2 This is a schematic diagram of the structure of the air duct assembly provided in the embodiments of this application;

[0031] Figure 3 This is a schematic diagram of the structure of an air-cooled battery box provided in another embodiment of this application;

[0032] Figure 4 This is a schematic diagram of the structure of the air-cooled battery device provided in the embodiments of this application.

[0033] The reference numerals in the figure are respectively:

[0034] 00a, First direction; 00b, Second direction; 00c, Third direction;

[0035] 1. Box body;

[0036] 101. Receiving cavity; 102. Cell receiving area;

[0037] 11. Air inlet; 12. Air return outlet;

[0038] 2. Air duct components;

[0039] 20a, rectangular pipe fitting; 20a1, rectangular surface;

[0040] 21. Extended air duct; 211. Air outlet;

[0041] 3. Air guide baffle;

[0042] 31. Inclined plates;

[0043] 4. Suction fan;

[0044] 5. Air duct clamps;

[0045] 51. Air-cooled aisle;

[0046] 6. Box lid;

[0047] 100. Battery cells. Detailed Implementation

[0048] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0049] In the description of this application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are for the purpose of facilitating and simplifying the description of this application, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0050] Unless otherwise defined, all technical terms used in the embodiments of this application have the same meaning as commonly understood by one of ordinary skill in the art.

[0051] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0052] On the one hand, combined with Figure 1 As shown, this embodiment provides an air-cooled battery box, which includes: a box body 1, an air duct assembly 2, and an air guide baffle 3. The box body 1 has a receiving cavity 101, and the air duct assembly 2 and the air guide baffle 3 are respectively located in the receiving cavity 101; the box body 1 has at least one air inlet 11 and at least one air return outlet 12 on its side wall along the first direction 00a.

[0053] The air duct assembly 2 includes at least one extended air duct 21, one end of which is connected to at least one air inlet 11, the other end of which extends along a first direction 00a, and the at least one extended air duct 21 is provided with a plurality of air outlets 211 on its side along a second direction 00b.

[0054] The air guide baffle 3 is located on one side of at least one extended air duct 21 along the second direction 00b and is arranged opposite to the air outlet 211. The air guide baffle 3 is used to guide the air blown out along the air outlet 211 to at least one return air outlet 12. A cell receiving area 102 is formed between the air guide baffle 3 and at least one extended air duct 21. The second direction 00b is perpendicular to the first direction 00a.

[0055] In this embodiment of the air-cooled battery box, the housing cavity 101 of the box body 1 is arranged with an air duct assembly 2 and an air guide baffle 3. The air duct assembly 2 includes at least one extended air duct 21, which can extend and deliver air in the housing cavity 101 along the first direction 00a, and deliver air into the housing cavity 101 along the second direction 00b through the air outlet 211 opened on the side. This can ensure the uniformity of air delivery in the housing cavity 101 in the first direction 00a, and the uniform heat dissipation of the battery cells 100 in the battery cell housing area 102 with a small temperature difference. Moreover, in order to improve the air flow in the housing cavity 101, an air guide baffle 3 is arranged on the second direction 00b of the air outlet 211. The air guide baffle 3 can guide the air to the return air port 12, so that the air can quickly flow out through the return air port 12, so that the air in the housing cavity 101 can circulate efficiently, avoid the formation of stagnant air in the housing cavity 101, and improve the heat dissipation efficiency of the battery cells 100 in the battery cell housing area 102.

[0056] Combination Figure 1 As shown, in some embodiments, the air guide baffle 3 includes at least one inclined plate 31, the distance between the end of the inclined plate 31 facing the return air inlet 12 and the extension air duct 21 is D1, and the distance between the other end of the inclined plate 31 away from the return air inlet 12 and the extension air duct 21 is D2, wherein D1 > D2.

[0057] With the above arrangement, the air guide baffle 3 can use the inclined plate 31 to guide the airflow direction from the second direction 00b to the first direction 00a, and make the air flow out from the return air port 12.

[0058] Combination Figure 2 As shown, in some embodiments, the areas of multiple air outlets 211 are different, and the area of ​​the air outlets 211 gradually increases along the direction away from the air inlet 11.

[0059] In this embodiment, considering that the wind pressure is smaller the farther away from the air inlet 11, the air volume will decrease accordingly. Therefore, the flow area of ​​the air outlet 211 in the extended air duct 21 is smaller on the side closer to the air inlet 11 and larger on the side farther away from the air inlet 11. This makes the air volume of the air outlet 211 at different positions in the first direction 00a of the extended air duct 21 more similar. The air volume of the extended air duct 21 directed to the cell housing area 102 by the air outlet 211 is more uniform in the first direction 00a.

[0060] Combination Figure 3 and Figure 4 As shown, in some embodiments, the cell receiving area 102 is used to receive a plurality of cells 100, which are parallel to the air outlet direction of the air outlet 211, and the plurality of cells 100 are spaced apart from the air guide baffle 3, so that the air blown out of the air outlet 211 can flow through the plurality of cells 100 to the air guide baffle 3, and be guided along the air guide baffle 3 to at least one return air outlet 12.

[0061] With the above arrangement, after the air is blown out through the air outlet 211, it can pass through the gap between the battery cells 100 and blow to the air guide baffle 3. Then the air guide baffle 3 guides the air to the return air outlet 12. The air can circulate smoothly in the housing 1 and can flow continuously through multiple battery cells 100 to achieve air cooling of the battery cells 100.

[0062] Combination Figure 2 As shown, in some embodiments, the air duct assembly 2 includes at least one rectangular tube 20a, each rectangular tube 20a forming an extended air duct 21, the cross-section of the extended air duct 21 being a rectangular cross-section.

[0063] One of the rectangular faces 20a1 of each rectangular tube 20a is arranged perpendicular to the second direction 00b, and the air outlet 211 is located on the rectangular face 20a1 facing the guide baffle 3.

[0064] With the above arrangement, the extended air duct 21 is formed by using rectangular tube 20a. The structure is simple, easy to produce and process, and the extended air duct 21 itself has good sealing properties, so no additional sealing treatment is required.

[0065] In addition, the regular structure of the rectangular tube 20a helps to simplify the positioning and assembly of the air duct assembly 2 and the air-cooled battery box. Moreover, the regular shape helps to make full use of the space of the air-cooled battery box's receiving cavity 101, which facilitates the stacking and matching of the air duct assembly 2 with other structural components.

[0066] Combination Figure 1 As shown, in some embodiments, there are two extended air ducts 21, which are symmetrically arranged on both sides of the air guide baffle 3 along the second direction 00b, and the air outlets 211 of the two extended air ducts 21 are arranged opposite to each other.

[0067] There are two air inlets 11 and one air return outlet 12. The positions of the two air inlets 11 correspond to the positions of the two extended air ducts 21, and the position of the one air return outlet 12 corresponds to the position of the air guide baffle 3. The air guide baffle 3 can guide the air blown out of the air outlets 211 of the two extended air ducts 21 to the air return outlet 12.

[0068] With the above arrangement, the air-cooled battery box can be ventilated by two extended air ducts 21, resulting in higher internal airflow efficiency. Moreover, the two extended air ducts 21 are separated by the air guide baffle 3, so the air blown out by the two extended air ducts 21 will not form opposing wind resistance at the middle position of the receiving cavity 101, thus avoiding interference with airflow efficiency.

[0069] Combination Figure 1 As shown, in some embodiments, the air guide baffle 3 includes two inclined plates 31 arranged in a V-shape, and each inclined plate 31 is used to guide the air blown out of the air outlet 211 of an extended air duct 21.

[0070] With the above arrangement, the V-shaped air guide baffle 3 can guide the air blown out of the two extended air ducts 21 separately, and there is no opposing wind resistance between them, resulting in high airflow efficiency.

[0071] Combination Figure 1 As shown, in some embodiments, the air-cooled battery box also includes an intake fan 4, which is located on at least one return air vent 12.

[0072] With the above arrangement, the air intake fan 4 is placed at the return air inlet 12, which can further improve the return air efficiency of the air-cooled battery box.

[0073] Combination Figure 3 As shown, in some embodiments, the air-cooled battery box also includes an air duct clamp 5.

[0074] The air duct clamp 5 is located in the cell housing area 102. The air duct clamp 5 is provided with at least two air cooling channels 51. The air duct clamp 5 is used to be arranged between two adjacent cells 100. The air blown out of the air outlet 211 can flow through the air cooling channel 51 to the air guide baffle 3.

[0075] In this embodiment, in order to ensure the efficiency of cold air circulation within the cell 100 housing, the air circulation is blocked after the cell 100 housing is stacked. An air duct clamp 5 with at least one air-cooling channel 51 is arranged between two adjacent cells 100. The air duct clamp 5 can provide a channel for cold air to flow between two adjacent cells 100. Moreover, during the flow of cold air along the air-cooling channel 51, the air duct clamp 5 can achieve large-area contact with the cell 100, resulting in high heat exchange efficiency and improving the heat dissipation efficiency of the cell 100.

[0076] For example, the large surface of the battery cell 100 is parallel to the air outlet 211, and the air duct clamp 5 is located between the large surfaces of the two battery cells 100. The air duct clamp 5 is in contact with the large surface of the battery cell 100, with a larger contact area and a larger heat exchange area.

[0077] Combination Figure 4 As shown, in some embodiments, the housing 1 is open at one end along the third direction 00c. The air-cooled battery box also includes a cover 6, which is connected to the housing 1 along the third direction 00c, wherein the third direction 00c is perpendicular to the first direction 00a and the second direction 00b, respectively. With the above arrangement, one end of the housing 1 is open, which facilitates the installation and maintenance of the battery cell 100.

[0078] On the other hand, combining Figure 4 As shown, this embodiment provides an air-cooled battery device, which includes: the air-cooled battery box of this application, and at least one battery cell 100, wherein the at least one battery cell 100 is located in the battery cell receiving area 102.

[0079] The air-cooled battery device of this embodiment uses the air-cooled battery box of this application and has all the beneficial technical effects of all embodiments herein. The air-cooled battery device has uniform internal airflow, uniform heat dissipation of the battery cells 100 in the cell housing area 102, and small temperature difference. Moreover, the air in the housing cavity 101 can circulate efficiently, avoiding the formation of stagnant air in the housing cavity 101 and improving the heat dissipation efficiency of the battery cells 100 in the cell housing area 102.

[0080] It should be noted that in this article, "several" and "at least one" refer to one or more, while "multiple" and "at least two" refer to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0081] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0082] Unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0083] In the description of this specification, the references to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the embodiments or examples that are included in at least one embodiment or example of this application.

[0084] The above description is merely an embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this application should be included within the protection scope of this application.

Claims

1. An air-cooled battery box, characterized by The air-cooled battery box includes: a box body (1), an air duct assembly (2), and an air guide baffle (3); The housing (1) is provided with a receiving cavity (101), and the air duct assembly (2) and the air guide baffle (3) are respectively located in the receiving cavity (101); The housing (1) has at least one air inlet (11) and at least one air return outlet (12) on its side wall along the first direction (00a); The air duct assembly (2) includes at least one extended air duct (21), one end of which is connected to at least one air inlet (11), the other end of which extends along the first direction (00a), and the at least one extended air duct (21) is provided with a plurality of air outlets (211) on its side along the second direction (00b). The air guide baffle (3) is located on one side of the at least one extended air duct (21) along the second direction (00b) and is arranged opposite to the air outlet (211). The air guide baffle (3) is used to guide the air blown out along the air outlet (211) to the at least one return air outlet (12). A cell receiving area (102) is formed between the air guide baffle (3) and the at least one extended air duct (21). The second direction (00b) is perpendicular to the first direction (00a).

2. The forced air battery box of claim 1, wherein, The air guide baffle (3) includes at least one inclined plate (31), the distance between the first end of the inclined plate (31) facing the return air inlet (12) and the extension air duct (21) is D1, and the distance between the second end of the inclined plate (31) away from the return air inlet (12) and the extension air duct (21) is D2, wherein D1 > D2.

3. The forced air battery box of claim 1, wherein, The areas of the multiple air outlets (211) are different, and the area of ​​the air outlets (211) gradually increases along the direction away from the air inlet (11); And / or, The cell receiving area (102) is used to receive a plurality of cells (100). The plurality of cells (100) are parallel to the air outlet (211) in the air outlet direction, and the plurality of cells (100) are spaced apart from the air guide baffle (3), so that the air blown out of the air outlet (211) can flow through the plurality of cells (100) to the air guide baffle (3), and be guided along the air guide baffle (3) to at least one return air outlet (12).

4. The forced air battery box of claim 1, wherein, The air duct assembly (2) includes at least one rectangular tube (20a), each of the rectangular tubes (20a) forming an extended air duct (21), the cross section of the extended air duct (21) being a rectangular cross section; One of the rectangular faces (20a1) of each of the rectangular tubes (20a) is arranged perpendicular to the second direction (00b), and the air outlet (211) is located on the rectangular face (20a1) facing the air guide baffle (3).

5. The air-cooled battery box of any one of claims 1 to 4, wherein, The number of the extended air ducts (21) is two, and the two extended air ducts (21) are symmetrically arranged on both sides of the air guide baffle (3) along the second direction (00b), and the air outlets (211) of the two extended air ducts (21) are arranged opposite to each other. The number of air inlets (11) is two, the number of air return inlets (12) is one, the positions of the two air inlets (11) correspond to the positions of the two extended air ducts (21) respectively, and the position of the one air return inlet (12) corresponds to the position of the air guide baffle (3); The air guide baffle (3) can direct the air blown out of the air outlet (211) of the two extended air ducts (21) to the return air inlet (12).

6. The forced air battery box of claim 5, wherein, The air guide baffle (3) includes two inclined plates (31) arranged in a V-shape. Each inclined plate (31) is used to guide the air blown out of the air outlet (211) of one of the extended air ducts (21).

7. The forced air battery pack of claim 1, wherein, The air-cooled battery box also includes a suction fan (4), which is located on the at least one return air vent (12).

8. The forced air battery pack of claim 1, wherein, The air-cooled battery box also includes an air duct clamp (5); The air duct clamp (5) is located within the cell housing area (102). The air duct clamp (5) is provided with at least one air cooling channel (51). The air duct clamp (5) is used to be arranged between two adjacent cells (100). The air blown out by the air outlet (211) can flow to the air guide baffle (3) through the at least one air cooling channel (51).

9. The forced air battery pack of claim 1, wherein, The housing (1) is open at one end along the third direction (00c). The air-cooled battery box also includes a cover (6). The cover (6) and the housing (1) are connected and closed along the third direction (00c), wherein the third direction (00c) is perpendicular to the first direction (00a) and the second direction (00b), respectively.

10. An air-cooled battery device characterized by comprising: The air-cooled battery device includes: an air-cooled battery box according to any one of claims 1 to 9, and at least one battery cell (100), the at least one battery cell (100) being located within the battery cell receiving area (102).

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