Air-cooled battery pack

By designing an air-cooled battery pack including a box, a bracket, a deflector, a splitter and an exhaust fan, the problems of uneven heat dissipation of batteries and poor structural compactness in the prior art are solved, and uniform heat dissipation and structure of the battery cell are realized compactness.

CN222507716UActive Publication Date: 2025-02-18ZHONGSHAN STAR POWER & HUMAN INNOVATION TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202323482093.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2023-12-19
Publication Date
2025-02-18
Estimated Expiration
2033-12-19

AI Technical Summary

Technical Problem

The existing air-cooled battery packs have uneven heat dissipation effects and poor structural compactness, which affects the battery's performance.

Method used

An air-cooled battery pack is designed, adopting a combined structure of box, bracket, deflector, diverter plate and exhaust fan. By setting up multiple air inlets and gaps, the exhaust fan and deflector are used to make the wind blow evenly. On the battery cell, uniform heat dissipation is achieved.

Benefits of technology

It realizes uniform heat dissipation of the battery cell, improves the battery performance, and is compact in structure and is easy to assemble.

✦ Generated by Eureka AI based on patent content.

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    Figure CN222507716U_ABST
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Abstract

The utility model discloses an air-cooled battery pack which comprises a box body and a support arranged in the box body, a first air inlet is formed in the front portion of the box body, an air outlet is formed in the rear portion of the box body, at least two rows of battery cells arranged in the length direction of the support are arranged on the support, a first gap is formed between every two adjacent battery cells in the same row, and a second gap is formed between every two adjacent battery cells in the same row. The support is further provided with a flow guide plate and a flow distribution plate, a first air inlet channel is arranged between the flow distribution plate and the inner wall of the box body, a second air inlet channel is arranged between the flow guide plate and the inner wall of the box body, a second air inlet is formed in the position, corresponding to the second gap, of the flow distribution plate, and a third air inlet is formed in the flow guide plate. The bracket is also provided with an exhaust fan for exhausting air in the first gap and the second gap from the air outlet, an air inlet channel opening of the exhaust fan is communicated with the second gap, an air outlet channel of the exhaust fan is communicated with the air outlet, and under the action of the exhaust fan and the flow guide plate, the air is uniformly blown to the battery cell, so that the heat of the battery cell is more uniformly dissipated.
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Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to an air-cooled battery pack. Background Art

[0002] When energy storage batteries are in use, the cells will generate a lot of heat, which will cause the temperature of the energy storage batteries to rise and the temperature between the cells to be uneven, thus affecting the performance of the battery. At present, energy storage batteries are generally cooled by air cooling. The traditional air cooling system of batteries generally uses axial fans and air ducts installed in the battery pack for cooling. This requires the production of a specific structure to fix the axial fan, which increases the difficulty of production. In addition, the air duct is difficult to be evenly distributed in the battery, affecting the heat dissipation effect of the battery.

[0003] The utility model is made based on the above situation. Utility Model Content

[0004] The utility model overcomes the shortcomings of the prior art and provides an air-cooled battery pack which can dissipate heat evenly and has a compact structure.

[0005] The utility model is realized by the following technical solutions:

[0006] A wind-cooled battery pack comprises a box and a bracket arranged in the box, the front portion of the box being provided with a first air inlet, the rear portion of the box being provided with an air outlet, the bracket being provided with at least two rows of battery cells arranged along the length direction of the bracket, adjacent battery cells in the same row being provided with a first gap for air to pass through, and a second gap for air to pass through being provided between the two rows of battery cells, the bracket being further provided with a guide plate and a diverter plate, a first air inlet channel connected to the first air inlet being provided between the diverter plate and the inner wall of the box, a second air inlet channel connected to the first air inlet being provided between the guide plate and the inner wall of the box, a second air inlet for air to be blown into the second gap being provided at a position on the diverter plate corresponding to the second gap, a third air inlet for air to be blown into the first gap being provided at a position on the guide plate corresponding to the first gap, the bracket being further provided with an exhaust fan for exhausting air from the first gap and the second gap from the air outlet, the air inlet channel opening of the exhaust fan being connected to the second gap, and the air outlet channel of the exhaust fan being connected to the air outlet.

[0007] In the air-cooled battery pack as described above, the exhaust fan comprises a cross-flow fan.

[0008] In the air-cooled battery pack as described above, the length of the second air inlet is greater than or equal to the length of the battery cell.

[0009] In the air-cooled battery pack as described above, the length of the third air inlet is greater than or equal to the length of the battery cell.

[0010] In an air-cooled battery pack as described above, the air inlet opening of the exhaust fan is greater than or equal to the length of the battery cell, the air outlet opening of the exhaust fan is equal to the length of the air inlet opening of the exhaust fan, and the length of the air outlet is greater than or equal to the air outlet opening of the exhaust fan.

[0011] In the air-cooled battery pack as described above, the first air inlet is arranged on the front end surface of the box body, the air outlet is arranged on the rear end side surface of the box body, and the air inlet direction of the first air inlet is perpendicular to the air outlet direction of the air outlet.

[0012] In the air-cooled battery pack as described above, the bracket is provided with four rows of battery cells from top to bottom, the guide plate includes an upper guide plate provided above the bracket and a lower guide plate provided below the bracket, and the upper guide plate and the lower guide plate are both provided with a third air inlet.

[0013] In an air-cooled battery pack as described above, the diverter plate has two second air inlets distributed above and below, the upper second air inlet corresponds to the second gap between the upper two rows of battery cells, and the lower second air inlet corresponds to the second gap between the lower two rows of battery cells.

[0014] In the air-cooled battery pack as described above, the air outlet includes a first air outlet and a second air outlet, the first air outlet is arranged at the upper side of the rear end of the box body, and the second air outlet is arranged at the lower side of the rear end of the box body.

[0015] In an air-cooled battery pack as described above, the exhaust fan includes a first exhaust fan and a second exhaust fan, the air inlet channel opening of the first exhaust fan is connected to the second gap between the upper two rows of battery cells, the air outlet channel of the first exhaust fan is connected to the first air outlet, the air inlet channel opening of the second exhaust fan is connected to the second gap between the lower two rows of battery cells, and the air outlet channel of the second exhaust fan is connected to the second air outlet.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] 1. A second air inlet for blowing air into the second gap is provided at a position on the diverter plate corresponding to the second gap, and a third air inlet for blowing air into the first gap is provided at a position on the guide plate corresponding to the first gap. An exhaust fan for discharging the air in the first gap and the second gap from the air outlet is also provided on the bracket. Under the action of the exhaust fan and the guide plate, the wind is evenly blown on the battery cell, so that the heat dissipation of the battery cell is more even.

[0018] 2. The lengths of the second air inlet and the third air inlet are both greater than or equal to the length of the battery cell, so that the air can be blown onto the battery cell more evenly.

[0019] 3. The exhaust fan, guide plate, splitter plate and battery cell are all connected on the same bracket, with a compact and simple structure, which is easy to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0021] Figure 1 It is a structural schematic diagram of the utility model;

[0022] Figure 2 It is a cross-sectional view of the utility model;

[0023] Figure 3 It is an exploded view of the utility model. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings:

[0025] like Figures 1 to 3 The air-cooled battery pack shown in the figure comprises a box body 1 and a bracket 2 arranged in the box body 1, the front part of the box body 1 is provided with a first air inlet 11, the rear part of the box body 1 is provided with an air outlet 12, the bracket 2 is provided with at least two rows of battery cells 3 arranged along the length direction of the bracket 2, and a first gap 41 for air to pass through is provided between adjacent battery cells 3 in the same row, and a second gap 42 for air to pass through is provided between the two rows of battery cells 3, and the bracket 2 is also provided with a guide plate 5 and a diverter plate 6, and a first air inlet channel 71 connected to the first air inlet 11 is provided between the diverter plate 6 and the inner wall of the box body 1, and the A second air inlet channel 72 connected to the first air inlet 11 is provided between the guide plate 5 and the inner wall of the box body 1, a second air inlet 61 for blowing air into the second gap 42 is provided at a position corresponding to the second gap 42 on the diverter plate 6, a third air inlet 51 for blowing air into the first gap 41 is provided at a position corresponding to the first gap 41 on the guide plate 5, and an exhaust fan 8 for discharging the air in the first gap 41 and the second gap 42 from the air outlet 12 is also provided on the bracket 2, the air inlet channel of the exhaust fan 8 is connected to the second gap 42, and the air outlet channel of the exhaust fan 8 is connected to the air outlet 12.

[0026] A second air inlet 61 for blowing air into the second gap 42 is provided at a position on the diverter plate 6 corresponding to the second gap 42, and a third air inlet 51 for blowing air into the first gap 41 is provided at a position on the guide plate 5 corresponding to the first gap 41. The bracket 2 is also provided with an exhaust fan 8 for exhausting the air in the first gap 41 and the second gap 42 from the air outlet 12. Under the action of the exhaust fan 8 and the guide plate 5, the wind is blown evenly on the battery cell 3, so that the heat of the battery cell 3 is more evenly dissipated.

[0027] In one embodiment, the battery cell 3 is inserted into the bracket 2, and the guide plate 5 and the diverter plate 6 can be clamped on the bracket 2, or can be bonded or connected to the bracket 2 by other means such as threaded connectors. The exhaust fan 8 is connected to the bracket 2 by threaded fasteners or other connection methods, and the exhaust fan 8, the guide plate 5, the diverter plate 6 and the battery cell 3 are all connected to the same bracket 2, with a compact and simple structure, which is easy to assemble.

[0028] In one embodiment, the exhaust fan 8 is a cross-flow fan, and a relatively uniform air duct is formed through the combined action of the cross-flow fan and the guide plate 5, so that each battery cell 3 can dissipate heat evenly.

[0029] In one embodiment, the second air inlet 61 and the third air inlet 51 are both rectangular, the length of the second air inlet 61 is greater than or equal to the length of the battery cell 3; the length of the third air inlet 51 is greater than or equal to the length of the battery cell 3; the air inlet opening of the exhaust fan 8 is greater than or equal to the length of the battery cell 3, the air outlet opening of the exhaust fan 8 is equal to the length of the air inlet opening of the exhaust fan 8, and the length of the air outlet 12 is greater than or equal to the air outlet opening of the exhaust fan 8. The most preferred embodiment is that the length of the second air inlet 61 is equal to the length of the battery cell 3, the air inlet opening of the exhaust fan 8 is equal to the length of the battery cell 3, the air outlet opening of the exhaust fan 8 is equal to the length of the air inlet opening of the exhaust fan 8, and the length of the air outlet 12 is equal to the air outlet opening of the exhaust fan 8. The wind energy of this most preferred embodiment can be blown onto the battery cell 3 most evenly.

[0030] The first air inlet 11 is arranged on the front end face of the box body 1, and the air outlet 12 is arranged on the rear end side face of the box body 1. The air inlet direction of the first air inlet 11 is perpendicular to the air outlet direction of the air outlet 12, and the wind flow direction is perpendicular to the axis of the battery cell 3, so that the wind energy can pass through all the battery cells 3 more evenly to dissipate heat.

[0031] In one embodiment, the bracket 2 is provided with four rows of battery cells 3 from top to bottom, the guide plate 5 includes an upper guide plate 52 provided above the bracket 2 and a lower guide plate 53 provided below the bracket 2, and the upper guide plate 52 and the lower guide plate 53 are both provided with a third air inlet 51, and the positive and negative poles of adjacent battery cells 3 in the same row are in opposite directions, and the positive and negative poles of the upper and lower battery cells 3 in the upper two rows of battery cells 3 are in the same direction. In the lower two rows of battery cells 3, the positive and negative poles of the upper and lower battery cells 3 are in the same direction.

[0032] Specifically, the splitter plate 6 has two second air inlets 61 distributed above and below, the upper second air inlet 61 corresponds to the second gap 42 between the upper two rows of battery cells 3, and the lower second air inlet 61 corresponds to the second gap 42 between the lower two rows of battery cells 3. The air outlet 12 includes a first air outlet 121 and a second air outlet 122, the first air outlet 121 is arranged on the upper side of the rear end of the box body 1, and the second air outlet 122 is arranged on the lower side of the rear end of the box body 1. The exhaust fan 8 includes a first exhaust fan 81 and a second exhaust fan 82, the air inlet channel opening of the first exhaust fan 81 is connected to the second gap 42 between the upper two rows of battery cells 3, the air outlet channel of the first exhaust fan 81 is connected to the first air outlet 121, the air inlet channel opening of the second exhaust fan 82 is connected to the second gap 42 between the lower two rows of battery cells 3, and the air outlet channel of the second exhaust fan 82 is connected to the second air outlet 122.

Claims

1. An air-cooled battery pack, characterized in that: The invention comprises a box body (1) and a bracket (2) arranged in the box body (1), wherein the front part of the box body (1) is provided with a first air inlet (11), and the rear part of the box body (1) is provided with an air outlet (12), the bracket (2) is provided with at least two rows of battery cells (3) arranged along the length direction of the bracket (2), a first gap (41) for air to pass through is provided between adjacent battery cells (3) in the same row, and a second gap (42) for air to pass through is provided between the two rows of battery cells (3), the bracket (2) is also provided with a guide plate (5) and a splitter plate (6), a first air inlet channel (71) connected to the first air inlet (11) is provided between the splitter plate (6) and the inner wall of the box body (1), and the guide plate (5) is provided with a first air inlet channel (71) connected to the first air inlet (11), and the guide plate (5) is provided with a second air outlet (71) connected to the first air inlet (11). ) and the inner wall of the box body (1) are provided with a second air inlet channel (72) connected to the first air inlet (11); a second air inlet (61) for blowing air into the second gap (42) is provided at a position corresponding to the second gap (42) on the diverter plate (6); a third air inlet (51) for blowing air into the first gap (41) is provided at a position corresponding to the first gap (41) on the guide plate (5); an exhaust fan (8) for exhausting air from the first gap (41) and the second gap (42) from the air outlet (12) is also provided on the bracket (2); the air inlet channel of the exhaust fan (8) is connected to the second gap (42), and the air outlet channel of the exhaust fan (8) is connected to the air outlet (12).

2. The air-cooled battery pack according to claim 1, characterized in that: The exhaust fan (8) comprises a cross-flow fan.

3. The air-cooled battery pack according to claim 2, characterized in that: The length of the second air inlet (61) is greater than or equal to the length of the battery core (3).

4. The air-cooled battery pack according to claim 3, characterized in that: The length of the third air inlet (51) is greater than or equal to the length of the battery core (3).

5. The air-cooled battery pack according to claim 4, characterized in that: The air inlet opening of the exhaust fan (8) is greater than or equal to the length of the battery cell (3), the air outlet opening of the exhaust fan (8) is equal to the length of the air inlet opening of the exhaust fan (8), and the length of the air outlet (12) is greater than or equal to the air outlet opening of the exhaust fan (8).

6. The air-cooled battery pack according to claim 1, characterized in that: The first air inlet (11) is arranged on the front end surface of the box body (1), and the air outlet (12) is arranged on the rear end side surface of the box body (1), and the air inlet direction of the first air inlet (11) is perpendicular to the air outlet direction of the air outlet (12).

7. The air-cooled battery pack according to claim 1, characterized in that: The support (2) is provided with four rows of battery cells (3) from top to bottom, the guide plate (5) comprises an upper guide plate (52) provided above the support (2) and a lower guide plate (53) provided below the support (2), and a third air inlet (51) is provided on both the upper guide plate (52) and the lower guide plate (53).

8. The air-cooled battery pack according to claim 7, characterized in that: The splitter plate (6) has two second air inlets (61) distributed above and below, the upper second air inlet (61) corresponding to the second gap (42) between the upper two rows of battery cells (3), and the lower second air inlet (61) corresponding to the second gap (42) between the lower two rows of battery cells (3).

9. The air-cooled battery pack according to claim 8, characterized in that: The air outlet (12) comprises a first air outlet (121) and a second air outlet (122), wherein the first air outlet (121) is arranged on the upper side of the rear end of the box body (1), and the second air outlet (122) is arranged on the lower side of the rear end of the box body (1).

10. The air-cooled battery pack according to claim 9, characterized in that: The exhaust fan (8) comprises a first exhaust fan (81) and a second exhaust fan (82); the air inlet channel opening of the first exhaust fan (81) is connected to the second gap (42) between the upper two rows of battery cells (3); the air outlet channel of the first exhaust fan (81) is connected to the first air outlet (121); the air inlet channel opening of the second exhaust fan (82) is connected to the second gap (42) between the lower two rows of battery cells (3); and the air outlet channel of the second exhaust fan (82) is connected to the second air outlet (122).