New energy battery pack refrigeration structure

Abstract

This utility model discloses a cooling structure for a new energy battery pack, belonging to the field of new energy technology. It mainly includes a battery box and a cleaning component. Multiple new energy battery packs are fixedly installed inside the battery box. Heat dissipation fins, fixedly connected to the bottom of the battery box, are provided on both sides of each battery pack. The length direction of the heat dissipation fins forms an angle of approximately ~ degrees with the horizontal direction of the battery box. A blower fan is fixedly connected to one end of the battery box, located at the bottom end of the heat dissipation fins. A cooler, fixedly connected to the battery box, is located between the blower fan and the heat dissipation fins. This utility model uses the blower fan to blow cold air from inside the cooler along the length direction of the heat dissipation fins. When the air blows onto a sliding plate, it causes the sliding plate to slide obliquely upwards along the length direction of the heat dissipation fins. The inner wall of the sliding plate cleans the sides of the heat dissipation fins, thus achieving a cleaning effect.

Description

Technical Field

[0001] This utility model belongs to the field of new energy technology, and more specifically, it relates to a cooling structure for a new energy battery pack. Background Technology

[0002] In today's rapidly developing new energy vehicle industry, the performance and stability of the new energy battery pack, as the core power source of the vehicle, are of paramount importance. Batteries generate a significant amount of heat during charging and discharging. If this heat cannot be dissipated in time, the battery temperature will become excessively high, not only reducing charging and discharging efficiency but also accelerating battery aging and even posing safety hazards. Therefore, an efficient cooling and heat dissipation structure is crucial to ensuring the normal operation of new energy battery packs.

[0003] Currently, most common cooling structures for new energy battery packs on the market employ a combination of heat dissipation fins and fans. The fan accelerates airflow, while the heat dissipation fins increase the surface area for heat dissipation, thus lowering the battery temperature. However, this cooling structure has significant shortcomings in practical applications. Over time, the surface of the heat dissipation fins accumulates a large amount of dust and other impurities. These impurities hinder heat exchange between the air and the heat dissipation fins, reducing cooling efficiency.

[0004] To address the aforementioned technical problems, this application proposes a solution. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a cooling structure for a new energy battery pack. The structure uses a blower fan to blow cold air from inside the cooler toward the length of the heat dissipation fins. When the air blows toward the sliding plate, it can drive the sliding plate to slide obliquely upward along the length of the heat dissipation fins. The inner wall of the sliding plate can clean the side of the heat dissipation fins, thereby achieving a cleaning effect.

[0006] The aforementioned new energy battery pack cooling structure includes a battery box and a cleaning component. Multiple new energy battery packs are fixedly installed in the middle of the battery box. Heat dissipation fins are provided on both sides of the new energy battery packs and are fixedly connected to the bottom of the battery box. The length direction of the heat dissipation fins forms an angle of 10 to 12 degrees with the horizontal direction of the battery box. A blower fan is fixedly connected to one end of the battery box. The blower fan is located at the bottom end of the heat dissipation fins. A cooler fixedly connected to the battery box is provided between the blower fan and the heat dissipation fins.

[0007] The cleaning assembly includes a sliding plate slidably connected to the heat dissipation fins. The sliding plate has a through hole inside to facilitate the passage of the heat dissipation fins. Rollers that are rotatably connected to the heat dissipation fins are provided at both ends inside the through hole. Cleaning brushes that are in contact with the heat dissipation fins are installed on both sides inside the through hole. Two mounting posts are fixedly connected to the outer sides of the sliding plate. A wind-receiving plate is fixedly connected in the middle of the mounting posts. The wind-receiving plate is recessed towards the side facing the blowing fan and tilted towards the side facing the new energy battery pack.

[0008] Preferably, the blower fan extends through both the inside and outside of the battery box, and there are two blower fans.

[0009] Preferably, each of the new energy battery packs has a gap in the middle to facilitate air circulation.

[0010] Preferably, the bottom of the battery box is fixedly connected with multiple mounting brackets to facilitate the installation of new energy battery packs.

[0011] Preferably, a dustproof cotton is fixedly connected to one end of the air inlet of the blower fan.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention uses a blower fan to blow cold air from inside the cooler along the length of the heat dissipation fins. When the air blows onto the sliding plate, it causes the sliding plate to slide obliquely upwards along the length of the heat dissipation fins. The inner wall of the sliding plate can clean the sides of the heat dissipation fins, thus achieving a cleaning effect. In addition, when the blower fan stops running, the sliding plate slides obliquely downwards along the length of the heat dissipation fins due to gravity, which can clean the sides of the heat dissipation fins again. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a cooling structure for a new energy battery pack according to the present invention;

[0015] Figure 2 This is a top view of a cooling structure for a new energy battery pack according to this utility model;

[0016] Figure 3 This is a cross-sectional view of a cooling structure for a new energy battery pack according to this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the heat dissipation fins and cleaning components of this utility model.

[0018] Figure 5 This is a schematic diagram of the cleaning component of this utility model.

[0019] In the diagram, 1. Battery box; 2. New energy battery pack; 3. Cooler; 4. Blower fan; 401. Dustproof cotton; 5. Heat dissipation fins; 6. Cleaning assembly; 61. Sliding plate; 62. Through hole; 63. Roller; 64. Receiving cavity; 65. Cleaning brush; 66. Mounting column; 67. Air receiving plate; 7. Mounting bracket. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings:

[0021] The directional terms used in the detailed description paragraphs are only for the convenience of those skilled in the art to understand the technical solutions described in this application based on the visual orientation shown in the accompanying drawings. Unless otherwise expressly specified and limited, the terms "setting," "installation," "connection," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] A cooling structure for a new energy battery pack includes a battery box 1 and a cleaning assembly 6. The battery box 1 is made of high-strength, corrosion-resistant aluminum alloy and manufactured using a one-piece molding process to ensure good sealing and strength, effectively protecting the internal new energy battery pack 2. The external dimensions of the battery box 1 are customized according to the actual application scenario and battery pack capacity. Multiple mounting brackets 7 are installed inside to fix the new energy battery pack 2. Shock-absorbing rubber pads are installed on the mounting brackets 7 to reduce the impact of vibration on the battery pack during vehicle operation.

[0023] Multiple new energy battery packs 2 are fixedly installed inside the battery box 1. These battery packs 2, composed of multiple individual batteries connected in series or parallel, meet the power supply needs of new energy equipment. The battery packs are bolted to the mounting brackets of the battery box 1 to ensure a secure and reliable connection. An insulating and heat-resistant material is wrapped around the battery packs to prevent leakage and heat loss.

[0024] The new energy battery pack 2 has heat dissipation fins 5 fixedly connected to the bottom of the battery box 1 on both sides. The heat dissipation fins 5 are fixedly inclined inside the battery box 1, and the angle between them and the horizontal plane is 15 degrees. This angle has been verified through multiple experiments to ensure smooth airflow while making it easier for dust to slide off. The heat dissipation fins 5 are made of copper with good thermal conductivity and are manufactured through precision casting. Their surfaces are polished to make them smooth and flat, reducing dust adhesion. The number of heat dissipation fins 5 is reasonably configured according to the heat generation of the battery pack, and an appropriate distance is maintained between adjacent heat dissipation fins 5 to ensure sufficient airflow.

[0025] A blower fan 4 is mounted on the battery box 1 near the bottom of the heat dissipation fins 5, blowing air horizontally onto the heat dissipation fins 5. The blower fan 4 is a low-noise, high-airflow axial fan, and its speed can be automatically adjusted according to the battery pack temperature. The fan is fixed to the side wall of the battery box 1 by a mounting bracket equipped with shock-absorbing rubber rings to reduce vibration and noise generated during fan operation.

[0026] A cooler 3, fixedly connected to the battery box 1, is located between the blower fan 4 and the heat dissipation fins 5. The cooler 3 is installed between the blower fan 4 and the heat dissipation fins 5, and is situated in the airflow path of the blower fan 4. The cooler 3 employs semiconductor refrigeration technology, offering advantages such as high cooling efficiency, small size, and no refrigerant pollution. The cooling power of the cooler 3 is selected based on the heat generation of the battery pack. Heat sinks are installed on both sides of the cooler, and heat dissipation is achieved through the airflow from the blower fan 4, ensuring the normal operation of the cooler 3.

[0027] The cleaning component 6 includes a sliding plate 61 slidably connected to the heat dissipation fins 5. The sliding plate 61 has a through hole 62 for the heat dissipation fins 5 to pass through. Rollers 63, rotating and contacting the heat dissipation fins 5, are located at both ends of the through hole 62. Cleaning brushes 65, in contact with the heat dissipation fins 5, are installed on both sides of the through hole 62. Two mounting posts 66 are fixedly connected to the outer sides of the sliding plate 61. A wind-receiving plate 67 is fixedly connected between the mounting posts 66. The wind-receiving plate 67 is recessed towards the fan 4 and tilted towards the new energy battery pack 2. When the sliding plate 61 is blown by the fan 4, it slides obliquely upwards along the length of the heat dissipation fins 5. When the fan 4 stops running, the sliding plate 61 slides obliquely downwards along the length of the heat dissipation fins 5 due to gravity. The sliding plate 61 is made of lightweight, wear-resistant engineering plastic and manufactured using injection molding. The sliding plate 61 has a through hole 62 inside, through which the heat dissipation fins 5 can pass. The size of the through hole 62 matches the outer dimensions of the heat dissipation fins 5, ensuring that the sliding plate 61 can slide smoothly on the heat dissipation fins 5. Rollers 63 are fixed on the upper and lower inner walls of the through hole 62, contacting the upper and lower inclined surfaces of the heat dissipation fins 5. The rollers 63 are made of stainless steel, with a polished surface, and are equipped with high-precision bearings to reduce frictional resistance between the rollers 63 and the heat dissipation fins 5, making the sliding plate 61 slide more smoothly. The cleaning brush 65 has receiving cavities 64 on both the left and right inner walls of the through hole 62. A cleaning brush 65 is fixed inside the receiving cavity 64, contacting the side of the heat dissipation fins 5 and cleaning the side of the heat dissipation fins 5. The cleaning brush 65 uses soft nylon bristles with strong adsorption capacity. The length and density of the bristles are carefully designed to effectively remove dust from the side of the heat dissipation fins 5 without damaging the surface of the heat dissipation fins 5. Wind-receiving plate 67: Wind-receiving plates 67 are fixed to both sides of the sliding plate 61, with the side of the wind-receiving plate 67 facing the blower fan 4 recessed. This recessed design increases the contact area between the wind-receiving plate 67 and the wind, improving the sliding effect of the sliding plate 61 under wind force. The wind-receiving plate 67 is fixed to the sliding plate 61 by mounting posts 66. The mounting posts 66 are made of high-strength plastic material to ensure a firm connection between the wind-receiving plate 67 and the sliding plate 61.

[0028] Two fans 4 extend through both the inner and outer sides of the battery box 1. Each new energy battery pack 2 has a gap in the middle to facilitate airflow, allowing the cool air blown by the fans 4 to enter and dissipate heat from the surrounding area of ​​the battery pack 2. A dustproof cotton 401 is fixedly connected to one end of the air inlet of the fans 4, isolating most of the dust on the outside of the battery box. This cotton can be replaced periodically to prevent blockage of the air inlet and outlet.

[0029] Those skilled in the art can use existing technologies they possess, such as installing appropriate mechanical limit switches or photoelectric sensors, to limit the specified positions of each actuator during the following operation process; to achieve automated operation, this utility model can use numerical control technology or PLC to control the actions of each actuator.

[0030] Working principle

[0031] When the new energy battery pack 2 generates heat during operation, the blower fan 4 starts, blowing cold air from inside the cooler 3 along the length of the heat dissipation fins 5. During its flow, the cold air exchanges heat with the heat dissipation fins 5, carrying away heat and thus lowering the temperature of the new energy battery pack 2. When the air blows onto the air receiving plates 67 on both sides of the sliding plate 61, the concave design of the air receiving plates 67 creates an upward thrust, causing the sliding plate 61 to slide upwards along the length of the heat dissipation fins 5. Furthermore, both sides of the air receiving plates 67 are tilted towards the new energy battery pack 2, which further facilitates the airflow into the gaps of the new energy battery pack 2, effectively circulating around it for cooling. During the sliding of the sliding plate 61, the cleaning brushes 65 on the inner walls of the through holes 62 clean the sides of the heat dissipation fins 5, removing dust adhering to them. When the blower fan 4 stops running, the sliding plate 61 slides diagonally downward along the length of the heat dissipation fins 5 due to its own gravity. The cleaning brush 65 cleans the side of the heat dissipation fins 5 again to ensure that the heat dissipation effect of the heat dissipation fins 5 remains good.

[0032] Finally, although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A new energy battery pack refrigeration structure, comprising a battery box (1) and a cleaning assembly (6), characterized in that: Multiple new energy battery packs (2) are fixedly installed in the middle of the battery box (1). The new energy battery packs (2) are provided with heat dissipation fins (5) fixedly connected to the bottom of the battery box (1) on both sides. The length direction of the heat dissipation fins (5) forms an angle of 10 to 20 degrees with the horizontal direction of the battery box (1). A blower fan (4) is fixedly connected to one end of the battery box (1). The blower fan (4) is located at the bottom end of the heat dissipation fins (5). A cooler (3) fixedly connected to the battery box (1) is provided between the blower fan (4) and the heat dissipation fins (5). The cleaning assembly (6) includes a sliding plate (61) slidably connected to the heat dissipation fins (5). The sliding plate (61) has a through hole (62) inside to facilitate the passage of the heat dissipation fins (5). Rollers (63) that are in contact with and rotatably connected to the heat dissipation fins (5) are provided at both ends inside the through hole (62). Cleaning brushes (65) that are in contact with the heat dissipation fins (5) are installed on both sides inside the through hole (62). Two mounting posts (66) are fixedly connected to the outer sides of the sliding plate (61). A wind-receiving plate (67) is fixedly connected in the middle of the mounting posts (66). The wind-receiving plate (67) is recessed towards the side facing the blower (4) and tilted towards the side facing the new energy battery pack (2).

2. The new energy battery pack refrigeration structure according to claim 1, characterized in that: The blower (4) runs through both the inside and outside of the battery box (1), and there are two blowers (4).

3. The new energy battery pack refrigeration structure according to claim 1, characterized in that: Each of the new energy battery packs (2) has a gap in the middle to facilitate air circulation.

4. The new energy battery pack refrigeration structure according to claim 1, characterized in that: The bottom of the battery box (1) is fixedly connected with multiple mounting brackets (7) to facilitate the installation of new energy battery packs (2).

5. The new energy battery pack refrigeration structure according to claim 1, characterized in that: The air inlet of the blower (4) is fixedly connected to a dustproof cotton (401).

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