New energy commercial vehicle fuel cell cooling aeration chamber

Abstract

The utility model provides a new energy commercial vehicle fuel cell cooling aeration chamber which comprises an air chamber, a battery pack body is placed in the air chamber, one end of the air chamber is provided with a heat dissipation fan, the other end of the air chamber is provided with a ventilation groove, two sides of the inside of the air chamber are provided with baffles, a circulation cavity is formed between the baffles and the wall of the air chamber, and the ventilation groove is communicated with the circulation cavity. A plurality of vertical grooves are formed in the baffle. According to the new energy commercial vehicle fuel cell cooling aeration chamber disclosed by the utility model, the circulation cavities and the vertical grooves which are formed at unequal intervals are formed in the two sides of the air chamber, the denser vertical grooves are formed in the position close to the air outlet (namely close to the heat dissipation fan), and cold air flows through the vertical grooves and is pressed into the air chamber through the air pressing fan; therefore, the temperature difference of the battery pack at the air outlet is reduced, and the temperature consistency of the battery pack is improved.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle battery technology, specifically to a cooling gas chamber for a fuel cell in a new energy commercial vehicle. Background Technology

[0002] Currently, with the rapid development of the new energy industry, battery applications are becoming more widespread, such as in electric vehicles. Power battery systems provide electrical energy to electric vehicles, enabling them to run. During charging and discharging, the cells in the battery module generate a significant amount of heat. When the heat is too high, the battery temperature exceeds the normal operating temperature range, leading to a decrease in battery performance and reduced cycle life. Therefore, it is necessary to cool the power battery system to maintain its optimal state.

[0003] In related technologies, battery pack cooling systems mostly use air cooling or water cooling to cool the battery. When using air cooling, forced air cooling (active air cooling) is usually used. Forced air cooling has a better cooling effect than natural air cooling, but its temperature uniformity is relatively poor, especially at the air inlet and outlet of the air chamber (the battery pack temperature near the air outlet is higher than that near the air inlet), so the cooling effect is not ideal.

[0004] This case arose in order to resolve the aforementioned issues. Summary of the Invention

[0005] Technical problems to be solved

[0006] The purpose of this invention is to provide a cooling chamber for a fuel cell in a new energy commercial vehicle to solve the problems mentioned in the background art.

[0007] Technical solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a cooling chamber for a fuel cell in a new energy commercial vehicle, comprising a chamber for placing a battery pack, a cooling fan at one end of the chamber, a ventilation slot at the other end, baffles on both sides of the chamber, forming a flow cavity between the baffles and the chamber wall, and several vertical slots on the baffles, which are unevenly distributed, with smaller intervals between the slots on the side closer to the cooling fan and larger intervals on the side farther from the cooling fan. A pressure chamber is provided on the side of the chamber with the ventilation slot, one side of the pressure chamber is connected to the flow cavity, and the other side is provided with a pressure fan.

[0009] Preferably, the cooling fan is an exhaust fan that draws air from the air chamber to the outside, and the compressor fan is a compressor fan that blows outside air into the circulation chamber.

[0010] Preferably, the cross-section of the plurality of vertical grooves is a parallelogram and their sidewalls are not perpendicular to the surface of the baffle.

[0011] Preferably, a torsion spring structure is provided in each of the vertical grooves, the torsion spring structure is disposed at both ends of the vertical groove, and a flow plate is provided between the torsion spring structures at both ends of the vertical groove, the two ends of the flow plate being connected to the torsion spring structure.

[0012] Preferably, when the air compressor is not started, both ends of the air flow plate are in contact with the surface of the baffle. Beneficial effects

[0013] After adopting the above technical solution, the present invention has the following advantages compared with the prior art: The present invention provides a cooling chamber for a fuel cell in a new energy commercial vehicle. By setting flow cavities and non-equally spaced vertical grooves on both sides of the chamber, and setting denser vertical grooves near the air outlet (i.e. near the cooling fan), cold air is forced into the chamber through the vertical grooves by the air compressor, so that the area near the air outlet is replenished with unheated air, thereby reducing the temperature difference of the battery pack at the air outlet and improving the temperature uniformity of the battery pack. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the interior of the air chamber;

[0015] Figure 2 This is a schematic diagram of the cross-section of the air chamber;

[0016] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0017] In the diagram: 1. Air chamber, 2. Cooling fan, 3. Ventilation slot, 4. Baffle, 41. Vertical slot, 42. Torsion spring structure, 43. Airflow plate, 5. Flow cavity, 6. Compression chamber, 7. Compression fan. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0019] This utility model embodiment provides a cooling gas chamber for a fuel cell in a new energy commercial vehicle, such as... Figure 1-3 As shown, the device includes an air chamber 1, which is used to house the battery pack. One end of the air chamber 1 is equipped with a cooling fan 2, and the other end is equipped with a ventilation slot 3. Baffles 4 are provided on both sides inside the air chamber 1, and a flow cavity 5 is formed between the baffles 4 and the wall of the air chamber 1. Several vertical slots 41 are provided on the baffles 4. The vertical slots 41 are unevenly distributed, with smaller intervals between the vertical slots 41 on the side closer to the cooling fan 2 and larger intervals between the vertical slots 41 on the side farther away from the cooling fan 2. A pressure chamber 6 is provided on the side of the air chamber 1 where the ventilation slot 3 is located. One side of the pressure chamber 6 is connected to the flow cavity 5, and the other side is equipped with a pressure fan 7.

[0020] By setting flow chambers on both sides of air chamber 1 and vertical slots that are not evenly spaced, and setting denser vertical slots near the air outlet (i.e. near the cooling fan), cold air is forced into the air chamber through the vertical slots by the air compressor, so that the area near the air outlet is replenished with unheated air, thereby reducing the temperature difference of the battery pack at the air outlet and improving the temperature uniformity of the battery pack.

[0021] It should be noted that the cooling fan 2 is an exhaust fan, which draws the air in the air chamber 1 to the outside, and the compressor fan 7 is a compressor fan, which blows the outside air into the flow chamber 5. The air flow direction in the air chamber 1 is from right to left (taking the view in the figure as an example).

[0022] Reference Appendix Figure 3 The cross-section of several vertical grooves 41 is a parallelogram and their sidewalls are not perpendicular to the surface of the baffle 4. This arrangement makes the air in the flow cavity 5 flow into the air chamber 1 with less resistance and smoother flow.

[0023] Several vertical slots 41 are equipped with torsion spring structures 42 (which are existing technologies and will not be described in detail). The torsion spring structures 42 are located at both ends of the vertical slots 41. A flow plate 43 is provided between the torsion spring structures 42 at both ends of the vertical slots 41. The two ends of the flow plate 43 are connected to the torsion spring structures 42. When the air compressor 7 is not started, the flow plate 43 is acted upon by the torsion spring structures 42. The two ends of the flow plate 43 are in contact with the surface of the baffle 4. When the air compressor 7 is started, air is forced into the flow chamber 5. The flow plate 43 is acted upon by the air pressure to resist the rotation of the torsion spring structures 42 (the torsion springs inside have small torsion). Cold air flows into the air chamber 1 through the vertical slots 41. With the help of the unevenly distributed vertical slots 41, the temperature in the air chamber 1 is balanced.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cooling chamber for a fuel cell in a new energy commercial vehicle, comprising a chamber (1), wherein the chamber (1) is used to house a battery pack, a cooling fan (2) is provided at one end of the chamber (1), and a ventilation slot (3) is provided at the other end, characterized in that: The air chamber (1) has baffles (4) on both sides inside. A flow cavity (5) is formed between the baffles (4) and the wall of the air chamber (1). Several vertical grooves (41) are opened on the baffles (4). The distribution of the vertical grooves (41) is uneven. The gap between the vertical grooves (41) on the side closer to the heat dissipation fan (2) is small, and the gap between the vertical grooves (41) on the side away from the heat dissipation fan (2) is large. A pressure chamber (6) is provided on the side of the air chamber (1) with ventilation grooves (3). One side of the pressure chamber (6) is connected to the flow cavity (5), and the other side is provided with a pressure fan (7).

2. The cooling chamber for a fuel cell in a new energy commercial vehicle according to claim 1, characterized in that: The cooling fan (2) is for exhaust, drawing air from the air chamber (1) to the outside, and the compressor fan (7) is for compression, blowing outside air into the flow chamber (5).

3. The cooling chamber for a fuel cell in a new energy commercial vehicle according to claim 1, characterized in that: The cross-section of the several vertical grooves (41) is a parallelogram and its sidewalls are not perpendicular to the surface of the baffle (4).

4. The cooling chamber for a fuel cell in a new energy commercial vehicle according to claim 3, characterized in that: The vertical grooves (41) are provided with torsion spring structures (42), which are located at both ends of the vertical grooves (41). A flow plate (43) is provided between the torsion spring structures (42) at both ends of the vertical grooves (41), and the two ends of the flow plate (43) are connected to the torsion spring structures (42).

5. The cooling chamber for a fuel cell in a new energy commercial vehicle according to claim 4, characterized in that: When the air compressor (7) is not started, both ends of the air flow plate (43) are in contact with the surface of the baffle (4).

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