Wind guide device and vehicle using the same

Abstract

The present invention relates to an air guide device and a vehicle using the air guide device. The air guide device includes a dust cover for fixing on a vehicle body, the bottom of the dust cover is provided with an air duct for connecting the inner cavity of the dust cover with the battery compartment, the dust cover is provided with an air-permeable grille for connecting with the interior of the vehicle, an inner cover body is provided inside the dust cover, the air duct is connected with the inner cavity of the inner cover body through the bottom surface of the inner cover body, the inner cover body includes a wind-shielding side surface provided corresponding to the air-permeable grille, and the two sides in the horizontal direction of the wind-shielding side surface are defined as the front side and the rear side, respectively, and the inner cover body is provided with an air inlet located in front of and / or behind the air-permeable grille; the vehicle includes a vehicle body, a battery compartment provided on the vehicle body, and the air guide device. The above scheme solves the problem that the air guide device in the existing vehicle has poor waterproof and dustproof performance.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to an air guide device and a vehicle using the air guide device. Background Art

[0002] The depletion of traditional energy and the pollution and damage to the air environment have made energy reform a global green new deal. While promoting this green revolution, pure electric and hybrid vehicles have also become the focus of the country's new energy industrialization. As one of the main systems of new energy vehicles, the performance of the on-board energy system determines the performance of the entire vehicle. At present, power lithium batteries are the mainstream form of on-board energy. In order to increase the service life of the battery, it is necessary to fully manage the thermal management of the battery system. Through a reasonable air duct structure, the battery has good ventilation and heat dissipation performance, providing a good temperature environment for the battery to perform its working performance.

[0003] The battery temperature of existing vehicles is mostly controlled by opening ventilation holes in the battery compartment or adding battery insulation materials. There are also measures such as adding a small fan in the battery compartment to control the temperature. These methods are easily restricted by the external temperature or the battery compartment space and wiring method. In addition, the air intake devices in some vehicles have a low safety factor, occupy the space inside the vehicle, and the temperature control effect is not ideal. Once damaged, it will cause great repair costs.

[0004] In response to the above problems, the Chinese utility model patent with the authorization announcement number CN205595427U discloses a battery air induction device for a pure electric highway bus, which includes an air induction duct that can connect the passenger cabin and the battery box, a switching air duct and a dust cover. The air induction duct is connected to the passenger cabin through the switching air duct, and the dust cover is arranged above the connection between the switching air duct and the passenger cabin. The side of the dust cover is provided with a plurality of air permeable grilles. The air induction device can have a certain cooling effect on the working environment of the battery, but because its air permeable grille is arranged above the switching air duct, accumulated water and dust can easily pass through the air permeable grille from above the switching air duct and along the switching air duct into the battery box, which can easily cause damage to the battery or blockage of the air induction duct over time. Summary of the invention

[0005] The object of the present invention is to provide an air guide device to solve the problem that the air guide devices in existing vehicles have poor waterproof and dustproof performance; the object of the present invention is also to provide a vehicle using the air guide device.

[0006] To achieve the above-mentioned purpose, the technical scheme of the air guide device provided by the present invention is: an air guide device, including a dust cover for fixing on a vehicle body, the bottom of the dust cover is provided with an air duct for connecting the inner cavity of the dust cover with the battery compartment, the dust cover is provided with an air permeable grille for connecting with the interior of the vehicle, an inner cover body is provided in the dust cover, the air duct is connected with the inner cavity of the inner cover body through the bottom surface of the inner cover body, the inner cover body includes a windshield side surface arranged corresponding to the air permeable grille, and the two sides in the horizontal direction of the windshield side surface are defined as the front side and the rear side respectively, the inner cover body is provided with an air inlet located in front of and / or behind the air permeable grille, and the inner cover body is composed of an outer wall, an inner wall, an upper side wall and a connecting wall. The baffle is composed of a bottom wall connected between the bottom of the outer wall and the bottom of the inner wall, the outer wall is close to the vehicle body and parallel to the inner wall, the inner wall forms a windshield side for blocking dust and water droplets entering from the air-permeable grille, the bottom of the inner wall is a step structure, the bottom wall of the baffle has a folded edge adapted to the step height, a front air inlet and a rear air inlet are formed between the folded edge and the inner and outer walls and upper wall of the baffle, and the edge of the folded edge forms the bottom edge of the air inlet; water droplets that cannot be blocked by the water inlet grille or dust in the car will blow onto the windshield side of the baffle, and will slide along the windshield side to the step surface of the step-shaped inner wall of the baffle, and will not directly enter the air duct.

[0007] The beneficial effects of the air guide device provided by the present invention are as follows: the air guide device realizes ventilation and heat dissipation of the battery compartment through an air duct provided at the bottom of the dust cover and used to connect the inner cavity of the dust cover and the battery compartment, thereby overcoming the space limitation of heat dissipation of the battery compartment of existing vehicles; the air guide device is further provided with an inner cover body in the dust cover, and the airflow entering from the air permeable grille is diverted through a wind-shielding side surface of the inner cover body, while at the same time preventing dust or water in the vehicle from directly entering the air duct, causing damage to the battery or clogging the air duct, and has excellent waterproof and dustproof properties.

[0008] Furthermore, the bottom edge of the air inlet is higher than the bottom surface of the inner cover body, which can prevent water droplets or dust in the vehicle from passing through the ventilation grille and being blocked by the windshield side and then flowing into the air duct along the bottom of the inner cover body.

[0009] Furthermore, the length and width of the windshield side are respectively greater than the length and width of the air-permeable grille. The length and width of the windshield side are respectively greater than the length and width of the air-permeable grille, ensuring that when water droplets splash into the dust cover from the air-permeable grille, they will not directly splash into the air duct, and dust will not directly blow into the air duct, but will be blocked by the windshield side, thereby ensuring the waterproof and dustproof performance of the entire air guide device.

[0010] Furthermore, it is defined that the air duct is provided at more than two locations. Providing more than two air ducts can reduce the size of the air duct while ensuring ventilation, thereby reducing the size of the entire air guide device and better meeting installation requirements.

[0011] The technical solution of the vehicle provided by the present invention is: a vehicle, comprising a vehicle body, a battery compartment and an air guide device arranged on the vehicle body, the air guide device comprising a dust cover for fixing on the vehicle body, the bottom of the dust cover is provided with an air duct for connecting the inner cavity of the dust cover with the battery compartment, the dust cover is provided with an air permeable grille for communicating with the interior of the vehicle, characterized in that: an inner cover body is provided in the dust cover, the air duct is connected with the inner cavity of the inner cover body through the bottom surface of the inner cover body, the inner cover body comprises a wind-shielding side surface arranged corresponding to the air permeable grille, the horizontal sides of the wind-shielding side surface are defined as a front side and a rear side respectively, the inner cover body is provided with an air inlet located in front of and / or behind the air permeable grille, and the inner cover body is provided with an air inlet located in front of and / or behind the air permeable grille, and the inner cover body is provided with an air inlet located in front of and / or behind the air inlet ... The baffle is composed of a wall, an inner wall, an upper side wall and a bottom wall connected between the bottom of the outer wall and the bottom of the inner wall, the outer wall is close to the vehicle body and parallel to the inner wall, the inner wall forms a windshield side for blocking dust and water droplets entering from the air vent grille, the bottom of the inner wall is a step structure, the bottom wall of the baffle has a folded edge adapted to the step height, a front air inlet and a rear air inlet are formed between the folded edge and the inner, outer walls and upper side wall of the baffle, and the edge of the folded edge forms the bottom edge of the air inlet; water droplets that cannot be blocked by the water inlet grille or dust in the car will slide along the windshield side to the step surface of the step-shaped inner wall of the baffle after being blown onto the windshield side of the baffle, and will not directly enter the air duct.

[0012] Beneficial effects on the vehicle: After the vehicle adopts the above-mentioned air guide device, the ventilation and heat dissipation of the entire battery compartment is well guaranteed. At the same time, since the air guide device has dustproof and waterproof properties, the safe operation of the battery is guaranteed, the battery can better exert its working performance, and the competitiveness of the product is greatly improved.

[0013] Furthermore, the bottom edge of the air inlet is limited to be higher than the bottom surface of the inner cover body. The bottom edge of the air inlet is higher than the bottom surface of the inner cover body to prevent water droplets or dust in the vehicle from passing through the ventilation grille and being blocked by the windshield side and then flowing into the air duct along the bottom of the dust cover.

[0014] Furthermore, the structure of the inner cover is improved, and it is defined that the inner cover includes an outer wall close to the vehicle body and an inner wall corresponding to and parallel to the outer wall, and the inner wall forms the wind-shielding side.

[0015] Furthermore, the length and width of the windshield side are respectively greater than the length and width of the air-permeable grille. The length and width of the windshield side are respectively greater than the length and width of the air-permeable grille, ensuring that when water droplets splash into the dust cover from the air-permeable grille, they will not directly splash into the air duct, and dust will not directly blow into the air duct, but will be blocked by the windshield side, thereby ensuring the waterproof and dustproof performance of the entire air guide device.

[0016] Furthermore, it is defined that the air duct is provided at more than two locations. Providing more than two air ducts can reduce the size of the air duct while ensuring ventilation, thereby reducing the size of the entire air guide device and better meeting installation requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of the air guide device provided by the present invention as viewed from the front;

[0018] Figure 2 A schematic diagram of the structure of the air guide device provided by the present invention when the air inlet box is removed;

[0019] Figure 3 A schematic diagram of an air inlet box of an air guide device provided by the present invention;

[0020] Figure 4 A schematic diagram of the structure of the air guide device provided by the present invention as viewed from the bottom;

[0021] Figure 5 for Figure 1 The cross-sectional shape of the middle base;

[0022] In the figure, 1-air guide duct, 2-base, 3-folded edge, 4-air inlet box, 5-ventilation hole, 6-front air inlet, 7-rear air inlet, 8-air ventilation grille, 9-body side sealing plate, 10-baffle. DETAILED DESCRIPTION

[0023] The specific implementation modes of the present invention will be further described below in conjunction with the accompanying drawings, but are not limited thereto.

[0024] The specific embodiment of the air guide device provided by the present invention is as follows: Figure 1 , Figure 3 and Figure 4 As shown, the air guide device includes an air guide duct 1, which forms an air duct connecting the vehicle passenger compartment and the battery compartment. The air guide device also includes a base 2 arranged above the air guide duct 1 and used for the air guide duct 1 to pass through. The base 2 is an omega-shaped bottom plate side beam profile assembly welded part, and its cross-sectional shape is as follows Figure 5As shown, on the one hand, it supports the bamboo floor around it, and on the other hand, it is welded and fixed to the vehicle body side sealing plate 9 to prevent the self-tapping screws from being exposed. In this embodiment, four air ducts 1 are arranged side by side. An air inlet box 4 is covered on the base 2, and the air inlet box 4 is buckled on the inner wall of the vehicle body side sealing plate 9 and welded to the base 2. The air inlet box 4 and the base 2 form a dust cover, and the air duct 1 connects the battery compartment and the inner cavity of the dust cover. The air inlet box 4 is provided with a ventilation hole 5 on one side parallel to the vehicle body side sealing plate 9, and a ventilation grille 8 for connecting with the interior of the vehicle is installed at the ventilation hole 5 by screws. The ventilation grille 8 has a plurality of shutters, and the windows of the shutters are arranged downward, which can effectively prevent water droplets from entering the battery compartment through the air duct 1.

[0025] The dust cover formed by the air inlet box 4 and the base 2 is provided with an inner cover body. In this embodiment, the inner cover body is a baffle 10 arranged on the base 2 and parallel to the air vent grille 8. Figure 2 As shown, the baffle 10 is composed of an outer wall, an inner wall, an upper wall and a bottom wall, wherein the outer wall and the inner wall are parallel to the air-permeable grille 8, the outer wall is buckled in the inner wall of the vehicle body side sealing plate 9, and the inner wall of the baffle 10 forms a wind-shielding side surface for blocking dust and water droplets entering from the air-permeable grille 8. In this embodiment, the two sides of the wind-shielding side surface in the horizontal direction are set as the front side and the rear side. The bottom of the inner wall of the baffle 10 is a step-shaped structure, and the bottom wall of the baffle 10 has a folding edge 3 adapted to the height of the step, and the front side air inlet 6 and the rear side air inlet 7 are formed between the folding edge 3 and the inner and outer side walls and the upper wall of the baffle 10, and the bottom edge height of the front side and rear side air inlet is greater than the bottom wall of the baffle 10. Since the air duct 1 runs through the base 2, in order to simultaneously ensure that the air duct 1 is connected to the air flow channel formed in the baffle 10 through the bottom wall of the baffle 10, the width of the folding edge 3 is smaller than the width of the base 2. In order to prevent water drops or dust that cannot be blocked by the air grille 8 from directly entering the air duct 1, the length and width of the wind-shielding side of the baffle 10 are respectively greater than the length and width of the air grille 8; at the same time, in order to improve the ventilation and heat dissipation effects, the sum of the cross-sectional areas of the front air inlet 6 and the rear air inlet 7 is greater than the sum of the effective air inlet areas of the air grille 8.

[0026] The wind in the passenger compartment enters the air inlet box 4 through the ventilation grille 8, and changes its direction after encountering the wind-shielding side of the baffle 10, so that the airflow flows along both sides of the wind-shielding side, respectively enters the air duct 1 through the front air inlet 6 and the rear air inlet 7, and flows into the battery compartment along the air duct 1 to dissipate heat or keep the battery compartment warm. Water droplets or dust in the car that cannot be blocked by the water inlet grille 8 will hit the wind-shielding side of the baffle 10, and will slide down along the wind-shielding side to the step surface of the step-shaped inner wall of the baffle 10, and will not directly enter the air duct 1. In addition, when the heater is turned on in the passenger compartment, water vapor will enter the air inlet box 4 from the air vent grille 8. Initially, the surface temperature of the baffle 10 is relatively low. When the water vapor contacts the wind-shielded side of the baffle 10, water droplets will be formed and will slide directly along the wind-shielded side to the bottom wall of the baffle 10. Since the bottom wall has a folded edge 3, the water droplets will not flow directly into the air duct 1. As the warm air circulates, the water droplets will gradually evaporate and decrease, thereby ensuring the waterproof performance of the entire air-guiding device.

[0027] In the above embodiment, the wind in the passenger compartment enters the air duct through the front and rear air inlets. In other embodiments, the outer wall of the baffle may be not buckled on the inner wall of the body side cover plate, so that a certain gap is left between the outer wall of the baffle and the inner wall of the body side cover plate, and the air inlet is opened on the outer wall of the baffle.

[0028] In the above embodiment, the bottom wall of the baffle has a folded edge structure so that the bottom edges of the front and rear air inlets are higher than the base, thereby preventing water droplets or dust from flowing directly into the air guide along the base. In other embodiments, the bottom wall of the baffle may not be configured as a folded edge structure, and the height at which the air guide passes through the bottom wall of the baffle is simply adjusted higher.

[0029] In the above embodiment, the baffle includes an outer wall buckled on the inner wall of the vehicle body side cover plate. In other embodiments, the baffle may not have an outer wall, but directly form an air inlet channel through its upper side wall, inner side wall, bottom wall and the vehicle body side cover plate.

[0030] An embodiment of a vehicle provided by the present invention comprises a vehicle body, a battery compartment and an air guide device arranged on the vehicle body. The structure of the air guide device is the same as the structure of the air guide device described in the above embodiment, and will not be described in detail here.

Claims

1. An air guide device, comprising a dust cover for fixing on a vehicle body, a wind duct for connecting the inner cavity of the dust cover with the battery compartment is provided at the bottom of the dust cover, and a ventilation grille for connecting with the interior of the vehicle is provided on the dust cover, characterized in that: An inner cover body is arranged in the dust cover, the air duct is communicated with the inner cavity of the inner cover body through the bottom surface of the inner cover body, the inner cover body comprises a wind-shielding side surface arranged corresponding to the air-permeable grille, the two sides of the wind-shielding side surface are defined as the front side and the rear side respectively in the horizontal direction, the inner cover body is provided with an air inlet located in the front side and / or the rear side of the air-permeable grille, the inner cover body is a baffle composed of an outer wall, an inner wall, an upper side wall and a bottom wall connected between the bottom of the outer wall and the bottom of the inner wall, the outer wall is close to the vehicle body and parallel to the inner wall, and the inner wall is formed for The windshield side is used to block dust and water droplets entering from the air-permeable grille, the bottom of the inner wall is a step structure, the bottom wall of the baffle has a folded edge adapted to the step height, a front air inlet and a rear air inlet are formed between the folded edge and the inner, outer walls and upper wall of the baffle, and the edge of the folded edge forms the bottom edge of the air inlet; water droplets that cannot be blocked by the water inlet grille or dust in the car will blow onto the windshield side of the baffle and will slide along the windshield side to the step surface of the stepped inner wall of the baffle and will not directly enter the air duct.

2. The air guide device according to claim 1, characterized in that: The bottom edge of the air inlet is higher than the bottom surface of the inner cover body.

3. The air guide device according to claim 1, characterized in that: The length and width of the wind-shielding side surface are respectively greater than the length and width of the air-permeable grille.

4. The air guide device according to claim 1, characterized in that: The air duct is provided at more than two locations.

5. A vehicle, comprising a vehicle body, a battery compartment and an air guide device arranged on the vehicle body, wherein the air guide device comprises a dust cover for fixing on the vehicle body, a wind duct for connecting the inner cavity of the dust cover with the battery compartment is arranged at the bottom of the dust cover, and a ventilation grille for connecting with the interior of the vehicle is arranged on the dust cover, characterized in that: An inner cover body is arranged in the dust cover, the air duct is communicated with the inner cavity of the inner cover body through the bottom surface of the inner cover body, the inner cover body comprises a wind-shielding side surface arranged corresponding to the air-permeable grille, the two sides of the wind-shielding side surface are defined as the front side and the rear side respectively in the horizontal direction, the inner cover body is provided with an air inlet located in the front side and / or the rear side of the air-permeable grille, the inner cover body is a baffle composed of an outer wall, an inner wall, an upper side wall and a bottom wall connected between the bottom of the outer wall and the bottom of the inner wall, the outer wall is close to the vehicle body and parallel to the inner wall, and the inner wall is formed for The windshield side is used to block dust and water droplets entering from the air-permeable grille, the bottom of the inner wall is a step structure, the bottom wall of the baffle has a folded edge adapted to the step height, a front air inlet and a rear air inlet are formed between the folded edge and the inner, outer walls and upper wall of the baffle, and the edge of the folded edge forms the bottom edge of the air inlet; water droplets that cannot be blocked by the water inlet grille or dust in the car will blow onto the windshield side of the baffle and will slide along the windshield side to the step surface of the stepped inner wall of the baffle and will not directly enter the air duct.

6. The vehicle according to claim 5, characterized in that The bottom edge of the air inlet is higher than the bottom surface of the inner cover body.

7. The vehicle according to claim 5, characterized in that The length and width of the wind-shielding side surface are respectively greater than the length and width of the air-permeable grille.

8. The vehicle according to claim 5, characterized in that The air duct is provided at more than two locations.

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