Fan heat dissipation mechanism for new energy truck

Abstract

The fan heat dissipation mechanism for the new energy truck comprises a battery box, a battery pack and a fan, the battery box is composed of a box body and a box cover, the box body comprises a bottom plate, a front side plate, a left side plate, a right side plate and a rear side plate, an air outlet is formed in the rear side plate, and a left air inlet is formed in the area, close to the upper front portion, of the left side plate; a top heat dissipation cavity is formed between the battery pack and the box cover, a bottom heat dissipation cavity is formed between the battery pack and the bottom plate, a left heat dissipation cavity and a left air inlet cavity are formed between the battery pack and the left side plate, a right heat dissipation cavity and a right air inlet cavity are formed between the battery pack and the right side plate, and an upper half heat dissipation cavity and a lower half heat dissipation cavity are formed between the battery pack and the front side plate. A rear heat dissipation cavity is formed between the battery pack and the rear side plate; and filtering modules are arranged in the two air inlets. After the fan is started, external air can be continuously sucked from the two air inlets, then flows through each cavity in the battery box, takes away heat and is discharged from the air outlets, so that the effect of controlling the external heat of the battery pack is achieved.

Description

Technical Field

[0001] This utility model relates to a vehicle-mounted fan cooling mechanism, and more particularly to a fan cooling mechanism for new energy trucks. Background Technology

[0002] With the development of new energy vehicles, pure electric trucks are becoming increasingly common. Compared to traditional trucks, pure electric trucks have significant advantages in environmental protection and emission reduction, as well as lower maintenance costs. At the same time, compared to internal combustion engines, electric motors have higher output torque, which significantly improves the load-bearing capacity of trucks.

[0003] Correspondingly, pure electric trucks carry huge power battery packs, which contain cell modules, battery management systems, thermal management systems, safety protection devices, and more. The power battery packs on trucks are often externally mounted, meaning most of them are exposed. Therefore, the outer casing is prone to dust and dirt accumulation. Furthermore, some mining and engineering trucks operate at low speeds for extended periods, while the battery packs are exposed to high temperatures and direct sunlight. This causes the battery pack casing to absorb a large amount of heat, and the lack of airflow hinders efficient heat dissipation. This heat further burdens the thermal management system within the battery pack. Summary of the Invention

[0004] This utility model provides a fan cooling mechanism for new energy trucks; it solves the problem in the prior art that the battery pack outer shell will increase the burden on the thermal management system inside the battery pack after being heated by the environment.

[0005] The above technical problems of the present utility model are mainly solved by the following technical solutions: A fan heat dissipation mechanism for a new energy truck, including a battery box, a battery pack located inside the battery box, and a fan provided on the battery box. The battery box is composed of a box body and a box cover. The box body includes a bottom plate, a front side plate, a left side plate, a right side plate, and a rear side plate. An air outlet is provided on the rear side plate, and the fan is installed at the air outlet. A left air inlet is provided in the area of the upper front part of the left side plate, and an "L" - shaped partition is provided on the inner side of the left side plate around the left air inlet. The front end of the "L" - shaped partition extends to connect with the front side plate, and the upper end of the "L" - shaped partition extends to the top of the left side plate. A right air inlet is provided in the area of the lower front part of the right side plate, and an inverted "L" - shaped partition is provided on the inner side of the right side plate around the right air inlet. The front end of the inverted "L" - shaped partition extends to connect with the front side plate, and the lower end of the inverted "L" - shaped partition extends to connect with the bottom plate. A partition plate connecting the "L" - shaped partition and the inverted "L" - shaped partition is provided on the inner side of the front side plate. "I" - shaped partitions are provided on the upper sides of the inner walls of the left side plate and the right side plate. A number of heightening blocks and two positioning edge strips are provided on the bottom plate. The positioning edge strips are higher than the heightening blocks, and the two positioning edge strips are symmetrically distributed on the left and right sides of the bottom plate. The positioning edge strips are in a "C" - shaped form, and the battery pack is fixed within the two positioning edge strips; A top heat dissipation cavity is formed between the battery pack and the box cover, a bottom heat dissipation cavity is formed between the battery pack and the bottom plate, a left heat dissipation cavity and a left air intake cavity are formed between the battery pack and the left side plate, a right heat dissipation cavity and a right air intake cavity are formed between the battery pack and the right side plate, an upper half heat dissipation cavity and a lower half heat dissipation cavity are formed between the battery pack and the front side plate, and a rear heat dissipation cavity is formed between the battery pack and the rear side plate; Filter modules are provided in both air inlets.

[0006] This invention assists in heat dissipation of the battery pack casing by setting a battery box and a fan on the outside of the battery pack, while also providing a certain degree of protection. When the fan starts, a negative pressure is created inside the entire battery box. The pressure difference drives external air to flow in through the left and right air inlets. The filter module filters out solid impurities and liquid droplets from the air. The air drawn in from the left air inlet first enters the left air inlet chamber. Due to the obstruction of the "L"-shaped partition and the "I"-shaped partition, the airflow can only flow to the upper half of the heat dissipation chamber. The right side of the upper half of the heat dissipation chamber is connected to the right heat dissipation chamber, and the upper side of the upper half of the heat dissipation chamber is also connected to the top heat dissipation chamber. Therefore, the airflow is divided into two streams, which eventually converge and are drawn out in the rear heat dissipation chamber. Similarly, the air drawn in from the right air inlet first enters the right air inlet chamber. Due to the obstruction of the inverted "L"-shaped partition and the positioning edge, the airflow can only flow to the lower half of the heat dissipation chamber. The left side of the lower half of the heat dissipation chamber is connected to the left heat dissipation chamber, and the lower side of the lower half of the heat dissipation chamber is also connected to the bottom heat dissipation chamber. Therefore, the airflow is divided into two streams, which eventually converge and are drawn out in the rear heat dissipation chamber. Two I-shaped partitions and two positioning edgings are used to separate the left, bottom, right, and top heat dissipation chambers, ensuring that airflow within these four chambers can only flow from front to back. This allows the intake of cool air to flow through virtually all areas of the battery pack, effectively and efficiently removing heat from within the battery pack.

[0007] This utility model places two air inlets on the left and right sides, mainly considering that during vehicle operation, the front and top sides of the battery box are easily impacted by sewage and gravel. In order to reduce the pressure on the filter module, the two air inlets are specially placed on the left and right sides.

[0008] Furthermore, the inner side of the left side plate is provided with two vertically spaced left longitudinal baffles, and the inner side of the right side plate is provided with two vertically spaced right longitudinal baffles. The front and rear heights of the left and right heat dissipation cavities are not the same. By setting the left and right longitudinal baffles, the airflow can be guided to flow in an S-shape, thereby ensuring that the airflow can flow through all areas of the left and right heat dissipation cavities and avoiding the generation of hot zones.

[0009] Therefore, this utility model has the following characteristics compared with the prior art: 1. After the fan is started, external air can be continuously drawn in from the two air inlets, then flow through the various cavities inside the battery box, take away the heat and then be discharged from the air outlet, which plays a role in controlling the external heat of the battery pack, and at the same time can also play a certain protective role. Attached Figure Description

[0010] Appendix Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Appendix Figure 2 This is a structural diagram of the box;

[0012] Appendix Figure 3 It is attached Figure 2Structural diagram from another perspective;

[0013] Appendix Figure 4 This is the airflow diagram for the left air intake;

[0014] Appendix Figure 5 This is the airflow diagram for the right air intake;

[0015] Appendix Figure 6 This is a cross-sectional view of the present invention;

[0016] Appendix Figure 7 It is attached Figure 6 Enlarged view of part A. Detailed Implementation

[0017] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0018] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, 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 utility model.

[0019] Example 1: See Figure 1 , Figure 2 , Figure 3 and Figure 6, A fan cooling mechanism for a new energy truck, including a battery box 100, a battery pack 200 located inside the battery box, and a fan 300 installed on the battery box. The battery box is composed of a box body and a box cover 110. The box body includes a bottom plate 120, a front side plate 130, a left side plate 140, a right side plate 150, and a rear side plate 160. An air outlet 170 is opened on the rear side plate, and the fan is installed at the air outlet. A partition net 171 for preventing foreign objects from entering is also provided inside the air outlet. A left air inlet 180 is opened in the area of the left side plate near the upper front, and an "L"-shaped partition 10 is provided inside the left side plate and around the left air inlet. The front end of the "L"-shaped partition extends to connect with the front side plate, and the upper end of the "L"-shaped partition extends to the top of the left side plate. A right air inlet 190 is opened in the area of the right side plate near the lower front, and an inverted "L"-shaped partition 20 is provided inside the right side plate and around the right air inlet. The front end of the inverted "L"-shaped partition extends to connect with the front side plate, and the lower end of the inverted "L"-shaped partition extends to connect with the bottom plate. A partition plate 70 connecting the "L"-shaped partition and the inverted "L"-shaped partition is provided inside the front side plate. An "I"-shaped partition 30 is provided on the upper side of the inner walls of the left side plate and the right side plate. A number of elevation blocks 121 and two positioning edges 40 are provided on the bottom plate. The positioning edges are higher than the elevation blocks, and the two positioning edges are symmetrically distributed on the left and right sides of the bottom plate. The positioning edges are in a "C" shape, and the battery pack is fixed within the two positioning edges; a top cooling cavity 1 is formed between the battery pack and the box cover, a bottom cooling cavity 2 is formed between the battery pack and the bottom plate, a left cooling cavity 3 and a left air inlet cavity 4 are formed between the battery pack and the left side plate, a right cooling cavity 5 and a right air inlet cavity 6 are formed between the battery pack and the right side plate, an upper half cooling cavity 7 and a lower half cooling cavity 8 are formed between the battery pack and the front side plate, and a rear cooling cavity 9 is formed between the battery pack and the rear side plate; a filter module 400 is provided in each of the two air inlets.

[0020] In this embodiment, a battery box and a fan are arranged outside the battery pack to assist in cooling the battery pack housing, and at the same time, it has a certain protective effect. When the fan is started, a negative pressure is formed inside the entire battery box, and the pressure difference will drive external air to flow in from the left air inlet and the right air inlet. The filter module will filter out solid impurities and liquid beads in the air, see Figure 4 , The air inhaled from the left air inlet first enters the left air inlet cavity. Under the blocking of the "L"-shaped partition and the "I"-shaped partition, the air flow can only flow upward into the upper half cooling cavity. The right side of the upper half cooling cavity is connected to the right cooling cavity, and the upper side of the upper half cooling cavity is also connected to the top cooling cavity. Therefore, the air flow is divided into two parts and finally converges and is sucked out in the rear cooling cavity; similarly, see Figure 5Air drawn in through the right air intake first enters the right intake chamber. Due to the obstruction of the inverted "L"-shaped baffle and the positioning edging, the airflow can only flow to the lower half of the heat dissipation chamber. The left side of the lower half of the heat dissipation chamber connects to the left heat dissipation chamber, and the lower side also connects to the bottom heat dissipation chamber. Therefore, the airflow splits into two streams, which eventually converge and are drawn out in the rear heat dissipation chamber. Two "I"-shaped baffles and two positioning edgings separate the left, bottom, right, and top heat dissipation chambers, ensuring that the airflow within these four chambers can only flow from front to back. This allows the drawn-in cool air to flow through virtually all areas of the battery pack, effectively and efficiently removing heat from the battery pack.

[0021] In this embodiment, the two air inlets are located on the left and right sides. This is mainly because the front and top sides of the battery box are easily impacted by sewage and gravel during vehicle operation. In order to reduce the pressure on the filter module, the two air inlets are specifically located on the left and right sides.

[0022] For details, see Figure 7 The filter module consists of, from the outside in, a louvered plate 410, a wire mesh filter 420, a filter cotton 430, and a non-woven fabric filter sheet 440. The louvered plate is mainly used to block rainwater and splashing sewage, the wire mesh filter is used to block large impurities and blades, the filter cotton is used to filter sand and liquid droplets, and the non-woven fabric filter sheet is used to filter dust.

[0023] For details, see Figure 7 The steel wire mesh filter has a first frame 421 on its outer side, the filter cotton has a second frame 431 on its outer side, and the non-woven fabric filter has a third frame 441 on its outer side. Each of the two air inlets has a clamping frame 411 that presses the three frames together. Louvers are rotatably connected to the sides of the corresponding air inlets. By opening the louvers and unloading the clamping frames, the three frames can be removed sequentially for easy cleaning and replacement later.

[0024] Specifically, the inner side of the left side plate has two vertically spaced left longitudinal baffles 50, and the inner side of the right side plate has two vertically spaced right longitudinal baffles 60. The front and rear heights of the left and right heat dissipation cavities are different. By setting the left and right longitudinal baffles, the airflow can be guided to flow in an S-shape, thereby ensuring that the airflow can flow through all areas of the left and right heat dissipation cavities and avoiding the generation of hot zones.

[0025] This invention can be modified in many ways, as will be apparent to those skilled in the art, and such modifications are not considered to depart from the scope of this invention. All such modifications that are obvious to those skilled in the art are included within the scope of these claims.

Claims

1. A fan cooling mechanism for a new energy truck, characterized in that: It includes a battery box, a battery pack located inside the battery box, and a fan installed on the battery box. The battery box is composed of a box body and a box cover. The box body includes a bottom plate, a front side plate, a left side plate, a right side plate, and a rear side plate. An air outlet is opened on the rear side plate, and the fan is installed at the air outlet. A left air inlet is opened in the area of the left side plate near the upper front. An "L" - shaped partition is provided inside the left side plate and around the left air inlet. The front end of the "L" - shaped partition extends to connect with the front side plate, and the upper end of the "L" - shaped partition extends to the top of the left side plate. A right air inlet is opened in the area of the right side plate near the lower front. An inverted "L" - shaped partition is provided inside the right side plate and around the right air inlet. The front end of the inverted "L" - shaped partition extends to connect with the front side plate, and the lower end of the inverted "L" - shaped partition extends to connect with the bottom plate. A partition plate connecting the "L" - shaped partition and the inverted "L" - shaped partition is provided inside the front side plate. "I" - shaped partitions are provided on the upper sides of the inner walls of the left side plate and the right side plate. A number of elevation blocks and two positioning edge strips are provided on the bottom plate. The positioning edge strips are higher than the elevation blocks. The two positioning edge strips are symmetrically distributed on the left and right sides of the bottom plate. The positioning edge strips are in a "U" - shaped. The battery pack is fixed within the two positioning edge strips. A top heat dissipation cavity is formed between the battery pack and the box cover. A bottom heat dissipation cavity is formed between the battery pack and the bottom plate. A left heat dissipation cavity and a left air inlet cavity are formed between the battery pack and the left side plate. A right heat dissipation cavity and a right air inlet cavity are formed between the battery pack and the right side plate. An upper half heat dissipation cavity and a lower half heat dissipation cavity are formed between the battery pack and the front side plate. A rear heat dissipation cavity is formed between the battery pack and the rear side plate. Filter modules are provided in both air inlets.

2. The heat dissipation mechanism for a new energy truck fan according to claim 1, characterized in that: The filter module is divided into a louver board, a wire mesh filter, a filter cotton, and a non - woven fabric filter sheet from outside to inside in sequence.

3. The heat dissipation mechanism for a new energy truck according to claim 2, characterized in that: A first frame body is provided outside the wire mesh filter. A second frame body is provided outside the filter cotton. A third frame body is provided outside the non - woven fabric filter sheet. A pressing frame for pressing the three frame bodies is provided in both air inlets. The louver board is rotatably connected to the side of the corresponding air inlet.

4. The heat dissipation mechanism for a new energy truck fan according to claim 2, characterized in that: Two vertically spaced left longitudinal partitions are provided inside the left side plate. Two vertically spaced right longitudinal partitions are provided inside the right side plate.

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